Journal Description
Buildings
Buildings
is an international, peer-reviewed, open access journal on building science, building engineering and architecture published monthly online by MDPI. The International Council for Research and Innovation in Building and Construction (CIB) is affiliated with Buildings and their members receive a discount on the article processing charges.
- Open Access— free for readers, with article processing charges (APC) paid by authors or their institutions.
- High Visibility: indexed within Scopus, SCIE (Web of Science), Inspec, and other databases.
- Journal Rank: JCR - Q2 (Engineering, Civil) / CiteScore - Q1 (Architecture)
- Rapid Publication: manuscripts are peer-reviewed and a first decision is provided to authors approximately 14.6 days after submission; acceptance to publication is undertaken in 2.6 days (median values for papers published in this journal in the second half of 2023).
- Recognition of Reviewers: reviewers who provide timely, thorough peer-review reports receive vouchers entitling them to a discount on the APC of their next publication in any MDPI journal, in appreciation of the work done.
- Companion Journal: Architecture.
Impact Factor:
3.8 (2022);
5-Year Impact Factor:
3.8 (2022)
Latest Articles
A Simultaneous Usage Ratio Based on Occupant Behavior: A Case Study of Intermittent Heating in an Apartment Building in Japan
Buildings 2024, 14(6), 1518; https://doi.org/10.3390/buildings14061518 (registering DOI) - 23 May 2024
Abstract
It is important to reduce the building load and downsize the heat source equipment capacity during construction or renovation carried out toward the achievement of carbon neutrality by 2050 in Japan. However, this sometimes results in the oversizing of the heat source equipment
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It is important to reduce the building load and downsize the heat source equipment capacity during construction or renovation carried out toward the achievement of carbon neutrality by 2050 in Japan. However, this sometimes results in the oversizing of the heat source equipment capacity, despite the fact that designers are engaged in the implementation of safety designs while attempting to balance between cost and risk. This study investigated the simultaneous usage ratio of heating based on occupant behavior in an apartment building with the aim of optimizing this capacity. This ratio was defined as a peak load-based approach rather than simultaneity based on the number of people using the system. First, the analysis was conducted for the heating load characteristics for each dwelling unit and each household composition. The subject of this case study was an apartment building located in Sapporo, Japan. Based on these data, a method for creating the curve of the simultaneous usage ratio to avoid a combinatorial explosion was suggested. As a result, the ratio created for about 200 dwelling units was 53.6% in an apartment building and generally stabilized when the number of dwelling units exceeded 30. Finally, a case study was attempted to analyze the influence of changes in household composition on the ratio. If the method proposed in this study for creating the curve of simultaneous usage ratios were to be applied in not only this case study but also in case studies of non-residential buildings such as offices, new results about the curves of ratios that differ from those of apartment buildings could be obtained. Therefore, this case study provides a methodology for statistically quantifying the simultaneous usage ratio as one of the factors in determining the appropriate heat source equipment capacity in the design stage.
Full article
(This article belongs to the Special Issue Editorial Board Members’ Collection Series: Building Energy, Physics, Environment, and Systems II)
Open AccessArticle
Analysis of the Mechanical Behavior and Joint Shear Capacity Optimization of Glued Keys in Segmental U-Shaped Bridges
by
Qiwu Yang, Zhiming Zhang, Shengguang Liang, Ziqi Tang, Zhenhao Gong, Shanzhi Liu and Yanqun Han
Buildings 2024, 14(6), 1517; https://doi.org/10.3390/buildings14061517 - 23 May 2024
Abstract
This paper presents an in-depth analysis of the mechanical behavior and joint shear capacity optimization of segmental U-shaped bridges, with a focus on the application of precast segmental techniques in the construction of U-beam bridges widely used in urban rail transit networks. This
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This paper presents an in-depth analysis of the mechanical behavior and joint shear capacity optimization of segmental U-shaped bridges, with a focus on the application of precast segmental techniques in the construction of U-beam bridges widely used in urban rail transit networks. This study further explores the roles of key position distribution and size in the overall stability and service behavior of such structures. Considering the critical case study of the Colombia Bogotá Metro Line 1 project, finite element modeling was carried out using ABAQUS 6.14 to simulate concrete material behaviors and to evaluate the stress–strain relationship in accordance with the concrete plastic damage model and existing standards. This research identifies the significant contribution of keys in minimizing deformation and enhancing shear capacity, demonstrating the pivotal influence of shear key design on the mechanical behavior of segmental bridges. By calculating the shear capacity under different cases, this study provides recommendations on key distributions and dimensions that optimize joint shear capacities, indicating that augmenting key size within the web plate section decisively reinforces the bridge’s mechanical resilience.
Full article
(This article belongs to the Section Building Structures)
Open AccessArticle
Study on the Effect of Natural Wind on the Smoke Spread Law of Extra-Long Tunnel Fires with Inclined Shafts for Air Supply and Exhaust
by
Yinjun Tan, Keli Wang, Zhiqiang Zhang, Zeyi Lu and Heng Zhang
Buildings 2024, 14(6), 1516; https://doi.org/10.3390/buildings14061516 - 23 May 2024
Abstract
High-temperature smoke generated by tunnel fires is the most important factor causing casualties. To explore the influence of natural wind on fire smoke movement in an extra-long highway tunnel based on the Taihang Mountain Tunnel, the distribution law of natural wind in the
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High-temperature smoke generated by tunnel fires is the most important factor causing casualties. To explore the influence of natural wind on fire smoke movement in an extra-long highway tunnel based on the Taihang Mountain Tunnel, the distribution law of natural wind in the tunnel was obtained by on-site monitoring of the meteorological conditions at the tunnel site. A three-dimensional fire dynamics tunnel model considering an inclined shaft smoke exhaust was established, and the influence of natural wind on tunnel temperature distribution, smoke spread and smoke exhaust efficiency was studied. The results show that the natural wind speed of the Taihang Mountain Tunnel is mainly concentrated at 0~3 m/s. The main wind direction of the natural wind on the left tunnel is opposite to the driving direction, and the distribution probability of the main wind direction in each section is 81.27% and 72.15%, respectively. The main wind direction of the right tunnel is the same as the driving direction, and the distribution probability of the main wind direction in each section is 56.78%, 69.73%, 67.32% and 64.65%, respectively. The negative natural wind can inhibit the smoke spread downstream of the smoke exhaust port, but it is not conducive to the smoke exhaust. The positive natural wind promotes the smoke spread to the downstream of the smoke exhaust port, and the larger the natural wind speed, the longer the spread length. Natural wind reduces the smoke exhaust efficiency. For positive or negative natural wind with a guaranteed rate of 70%, the smoke exhaust efficiency is reduced by 27.76% and 15.59%, respectively, compared with the condition without natural wind. The research results can provide a useful reference for the design of fire smoke exhausts and smoke control schemes in extra-long highway tunnels.
Full article
(This article belongs to the Special Issue Research on the Construction Mechanical Behavior and Deformation Characteristics of Lining Structure—2nd Edition)
Open AccessArticle
Mechanical Characteristics of Cracked Lining Reinforced with Steel Plate–UHPC Subjected to Vertical Load
by
Ju Wei, Zude Ding, Wanhu Shen and Xiaoqin Li
Buildings 2024, 14(6), 1515; https://doi.org/10.3390/buildings14061515 - 23 May 2024
Abstract
The steel plate reinforcement method is widely used for strengthening damaged linings. Nevertheless, low durability is one of the disadvantages of the steel plate reinforcement method, which uses epoxy resin as the interface binder. To enhance the load-bearing performance and strengthening effect of
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The steel plate reinforcement method is widely used for strengthening damaged linings. Nevertheless, low durability is one of the disadvantages of the steel plate reinforcement method, which uses epoxy resin as the interface binder. To enhance the load-bearing performance and strengthening effect of steel-plate-reinforced structures, this study introduced ultra-high performance concrete (UHPC) as the reinforcing bonding layer and proposed a novel method for steel plate–UHPC reinforcement of cracked linings. A mechanical performance model test was conducted on a 1/5 scale lining model using a loading test device to evaluate the load-bearing performance and stress deformation of both conventional steel plate and steel plate–UHPC reinforced cracked linings. The characteristics, mechanisms of failure, and impacts of strengthening of the steel plate reinforcement method and steel plate–UHPC reinforcement method for cracked linings were compared. A numerical simulation model was developed to investigate the reinforcement effect of cracked linings using steel plate–UHPC reinforcement. The analysis included examining the influence of steel plate thickness, UHPC bonding layer thickness, and reinforcement timing. Model test results show that the overall damage mode of the steel plate–UHPC-reinforced structure had good elastic–plastic behaviour, and the deformation and damage process under the vertical concentrated load can be divided into four typical phases. Compared with the traditional steel plate reinforcement, the ultimate load-carrying capacity and ductility of the steel plate–UHPC-reinforced structure were increased by 53% and 366%, respectively, showing significantly better load-carrying capacity and deformation performance. Numerical simulation results show that the reinforced structure’s load-carrying capacity and stiffness enhancement rate increased non-linearly with the increase in UHPC layer thickness and steel plate thickness. However, reasonable reinforcement timing exists for steel plate-UHPC reinforcement, and too late reinforcement timing leads to a decrease in structural load-carrying capacity and stiffness enhancement rate.
Full article
(This article belongs to the Section Building Energy, Physics, Environment, and Systems)
Open AccessArticle
Passive Control Measures of Wind Flow around Tall Buildings
by
Mario A. Aguirre-López, Filiberto Hueyotl-Zahuantitla and Pedro Martínez-Vázquez
Buildings 2024, 14(6), 1514; https://doi.org/10.3390/buildings14061514 - 23 May 2024
Abstract
The growth and diversification of tall buildings demands higher performance standards that encompass serviceability and resilience. In this respect, the control of air flow around tall buildings poses challenges to minimising the energy that could induce large vibrations or forces. The present investigation
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The growth and diversification of tall buildings demands higher performance standards that encompass serviceability and resilience. In this respect, the control of air flow around tall buildings poses challenges to minimising the energy that could induce large vibrations or forces. The present investigation scrutinises the flow around a tall structure with variations on its surface roughness by adding balconies to the facade, as a form of passive control of the flow loads. This is conducted through flow simulations across optimised computational arrays that capture 3D effects. To illustrate the applicability of the proposed approach, two types of facades rotated , and are considered while focusing on pressure and vorticity fields. It was found that the presence of balconies produces zig-zag patterns on the face where they are located, whereas balconies on the front facade reduce drag with respect to the smooth case. Furthermore, buildings with balconies on their lateral faces experience some increase in drag force and the improvement of the aerodynamics around the lateral pedestrian zones. No qualitative variations between triangular and rectangular balconies were found, excepting some changes in pressure magnitude on the rear side induced by balconies placed on the front and rear facades. Through the comparison of results, it was confirmed that the findings align with previous studies undertaken for medium and low-rise buildings. This reinforces the proposal of using such passive control measures to improve the aerodynamic performance of tall buildings. The study enables the quantification of flow configurations and forces on the building’s faces. Some of the proposed passive control measures effectively mitigate pressure levels while causing large local disturbs on pressure and vorticity that should be attended to by designers of this type of facades.
Full article
(This article belongs to the Special Issue Wind Load Effects on High-Rise and Long-Span Structures)
Open AccessArticle
Temporary Urbanism as a Catalyst for Social Resilience: Insights from an Urban Living Lab Practice-Based Research
by
Guido Robazza, Jacqueline Priego-Hernández, Silvio Caputo and Alessandro Melis
Buildings 2024, 14(6), 1513; https://doi.org/10.3390/buildings14061513 - 23 May 2024
Abstract
This research paper investigates the impact of Urban Living Labs (ULLs) on social resilience within urban communities, with a specific focus on the Multicultural City ChatterBox project in Portsmouth, the UK. Drawing on a rich body of literature and empirical data collected through
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This research paper investigates the impact of Urban Living Labs (ULLs) on social resilience within urban communities, with a specific focus on the Multicultural City ChatterBox project in Portsmouth, the UK. Drawing on a rich body of literature and empirical data collected through ethnographic research methods, including interviews, focus groups, and participant observations, this study explores how participatory placemaking and co-creation activities foster community resilience. The ChatterBox project, a collaborative effort between the local community and researchers, led to the construction of a temporary timber pavilion in an underutilized urban space, serving as a vibrant hub for social interaction and engagement among diverse community groups. Our findings reveal that ULLs significantly contribute to enhancing social resilience by empowering communities, fostering a sense of belonging, and facilitating the development of social networks. Through the process of co-design and co-creation, participants not only gained a deeper understanding and ownership of their urban environment but also developed valuable skills and knowledge, thus strengthening their capacity to adapt to societal challenges. Furthermore, this study highlights the role of ULLs in bridging gaps between different community groups, thereby promoting inclusivity and social cohesion. The Multicultural City ChatterBox project exemplifies how ULL interventions can serve as catalysts for social innovation, offering flexible and adaptive solutions to urban challenges while simultaneously enriching the social fabric of cities. This paper contributes to the growing discourse on urban resilience, placemaking, and community-led urban development, providing valuable insights for policymakers, urban planners, and community organizers seeking to foster resilient and vibrant urban communities.
Full article
(This article belongs to the Special Issue Novel Trends in Urban Planning for Building Urban Resilience)
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Open AccessArticle
Evaluation of Skid Resistance and Comfort of Pedestrian Pavement with Asphalt-Based Wood Chip
by
Jian Ma, Shaopeng Zheng, Zilong Zhang, Bo Han, Dan Geng, Xingliang Hong, Guoman Yu, Yueguang Li, Libin Li and Cheng Cheng
Buildings 2024, 14(6), 1512; https://doi.org/10.3390/buildings14061512 - 23 May 2024
Abstract
This paper conducts an in-depth study and evaluation of pedestrian paths, with a particular focus on the anti-slip performance and walking comfort of wooden chip pedestrian walkways. Through controlled experiments, a comparative analysis was performed between wooden chip pedestrian walkways and ordinary paved
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This paper conducts an in-depth study and evaluation of pedestrian paths, with a particular focus on the anti-slip performance and walking comfort of wooden chip pedestrian walkways. Through controlled experiments, a comparative analysis was performed between wooden chip pedestrian walkways and ordinary paved brick walkways. The experimental results indicate that under dry conditions, the anti-slip performance of various road surfaces is good. However, in wet environments, the anti-slip performance of paved brick roads deteriorates significantly. In contrast, wooden chip pedestrian walkways, especially those mixed with asphalt and wood chips, exhibit excellent anti-slip properties and comfort. Additionally, the study reveals that the comfort of wooden chip pedestrian walkways is significantly better than that of paved brick walkways, and the comfort of asphalt materials is slightly better than emulsified asphalt. It is worth mentioning that fine wood chips provide less comfort than coarse wood chips. Although reducing the thickness can enhance comfort, considering the service life of the road, a thickness of 4–6 cm is most suitable. Finally, asphalt and wooden chip mixtures with coarse wood chips possess good water permeability, making them suitable for permeable drainage pavement designs, effectively reducing road surface water accumulation.
Full article
(This article belongs to the Special Issue Research on Advanced Materials in Road Engineering)
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Open AccessArticle
Place and Independence Are Formed by Moving Furniture
by
Sota Masaki, Daiki Tomita, Hirosi Horiba and Yue Bao
Buildings 2024, 14(6), 1511; https://doi.org/10.3390/buildings14061511 - 23 May 2024
Abstract
In contemporary architectural design, a noticeable trend emerges in the meticulous planning of common areas, with an emphasis on fostering the free movements of users within these areas. It is important to consider the architectural elements that influence user behavior in these environments.
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In contemporary architectural design, a noticeable trend emerges in the meticulous planning of common areas, with an emphasis on fostering the free movements of users within these areas. It is important to consider the architectural elements that influence user behavior in these environments. Previous studies have delved into the relationship between architecture and user activity, often through questionnaires and activity surveys conducted in arbitrary spaces. However, such data are discontinuous and only capture a portion of the space. Therefore, in this study, continuous and extensive recordings were performed in an arbitrary space using a video camera to capture the entirety of the area. Consequently, we were able to comprehend the relationship between architecture and people’s activities and observe the formation of user autonomy through their decisions to rearrange furniture. Furthermore, an “Open Pose” system was used to detect people and generate a user stay distribution chart. This was achieved by converting it into a plan view using perspective projection transformation, thereby obtaining objective data automatically. Consequently, we verified the feasibility of conducting visually comprehensible processing using tools like “Open Pose”, which was used in one segment of the experiment.
Full article
(This article belongs to the Section Building Energy, Physics, Environment, and Systems)
Open AccessArticle
Building Integrated Photovoltaics (BIPV): Analysis of the Technological Transfer Process and Innovation Dynamics in the Swiss Building Sector
by
Pierluigi Bonomo and Francesco Frontini
Buildings 2024, 14(6), 1510; https://doi.org/10.3390/buildings14061510 - 23 May 2024
Abstract
Solar has confirmed its dominance among all power generation technologies, and along with the demand for zero-emission buildings, Photovoltaics (PV) is contributing to transforming the building skin. More than 200 products for Building Integrated Photovoltaics (BIPV) are commercialized nowadays in the EU market.
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Solar has confirmed its dominance among all power generation technologies, and along with the demand for zero-emission buildings, Photovoltaics (PV) is contributing to transforming the building skin. More than 200 products for Building Integrated Photovoltaics (BIPV) are commercialized nowadays in the EU market. However, only 1–3% of all PV installations are BIPV due to the weak penetration in the construction sector. At the state of the art, the sector lacks a specific analysis from a construction technology perspective, describing the dynamics and the traits that BIPV innovation articulates on construction and architectural processes. The authors, elaborating a new model from the building technology sector to explore the relationship between PV technology and architectural innovation, aim to identify the main principles, forms, and approaches that describe the structural organization of the “integrability” concept of PV in buildings. This study applies the method to a database of 233 real buildings located in Switzerland, a unique country leading with a 10% BIPV rate on PV installations documented between the years 1997 and 2023. The novel findings of the research suggest the definition of the levels of innovation and the reference traits of the innovative process of BIPV in the Swiss construction sector, which can also be used in other practical applications and contexts. The results of the paper are expected to impact both the scientific academy and the key players from the construction sector, encouraging the adoption of an integrated research and design approach to revolutionize the energy role of building skins with PV.
Full article
(This article belongs to the Section Building Energy, Physics, Environment, and Systems)
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Open AccessArticle
Enhancing Building Information Modeling on Green Building Practices in China: A Conceptual Framework
by
Hong Xie, Guangchong Chen, Xuewei Li, Guodong Zhang, Jiashu Zhang and Qiming Li
Buildings 2024, 14(6), 1509; https://doi.org/10.3390/buildings14061509 - 23 May 2024
Abstract
This study presents an in-depth investigation into the intersection of Building Information Modeling (BIM) and green building practices within China’s rapidly evolving construction industry. As China intensifies its efforts to mitigate environmental impacts and promote sustainable growth, the integration of BIM into green
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This study presents an in-depth investigation into the intersection of Building Information Modeling (BIM) and green building practices within China’s rapidly evolving construction industry. As China intensifies its efforts to mitigate environmental impacts and promote sustainable growth, the integration of BIM into green building practices emerges as a crucial area of study. A qualitative research method was adopted in this research. In the first step, utilizing semi-structured interviews with a diverse array of industry professionals, this research provides nuanced insights into the current state and prospects of BIM in the green building landscape. Secondly, thematic analysis is used to formalize the views and points from interviewees. Finally, a novel conceptual framework is proposed, addressing these challenges through technological innovation, supportive policies, cultural and educational reform, economic incentives, and collaborative dynamics. This study contributes a systematic approach to amalgamate BIM with sustainable construction, offering insights for industry professionals and policymakers to promote environmentally conscious building practices in China.
Full article
(This article belongs to the Section Construction Management, and Computers & Digitization)
Open AccessReview
Recycling of Mine Wastes in the Concrete Industry: A Review
by
Aiman El Machi, Yahya El Berdai, Safaa Mabroum, Amine el Mahdi Safhi, Yassine Taha, Mostafa Benzaazoua and Rachid Hakkou
Buildings 2024, 14(6), 1508; https://doi.org/10.3390/buildings14061508 - 23 May 2024
Abstract
The mining industry generates a substantial amount of waste materials, including tailings and waste rocks, which, if not managed correctly, pose threats to the environment and public health due to their long-term accumulation and disposal. Simultaneously, the construction sector consumes important amounts of
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The mining industry generates a substantial amount of waste materials, including tailings and waste rocks, which, if not managed correctly, pose threats to the environment and public health due to their long-term accumulation and disposal. Simultaneously, the construction sector consumes important amounts of natural resources like water and rocks. However, research shows that inert mining waste can serve as a substitute for conventional raw materials in construction, particularly in concrete. This review focuses on using mining waste as an alternative to concrete technology to promote cleaner practices in construction and circular economy in mining. Mining waste, with its physical characteristics and chemical composition, can function as diverse components in concrete, such as sand, aggregates, and binders. This article assesses these properties and explores their incorporation into concrete production, aiming to stimulate further research and development, foster environmentally responsible approaches, and underline the direct link to reaching SDGs to achieve sustainability in the construction industry.
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(This article belongs to the Collection Utilization of Waste Materials in Building Engineering)
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Open AccessReview
A Review of Static and Dynamic p-y Curve Models for Pile Foundations
by
Jiujiang Wu, Longjun Pu and Changming Zhai
Buildings 2024, 14(6), 1507; https://doi.org/10.3390/buildings14061507 - 23 May 2024
Abstract
In addition to supporting vertical loads from superstructures, piles are frequently subjected to horizontal soil pressures, long-term wind, wave, and current forces, as well as seismic loads. Presently, the p-y curve method is widely employed for calculating the horizontal forces acting on piles
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In addition to supporting vertical loads from superstructures, piles are frequently subjected to horizontal soil pressures, long-term wind, wave, and current forces, as well as seismic loads. Presently, the p-y curve method is widely employed for calculating the horizontal forces acting on piles due to its ability to replicate the nonlinear interaction between piles and soil. This paper provides a thorough review and analysis of the current research on p-y curve models for piles, examining literature across various conditions such as horizontal static loads, cyclic loads, and seismic loads. Special emphasis is placed on the development, classification, and analysis of the key factors influencing major p-y curve models. It also discusses future research directions and prospects, considering emerging trends and prevailing challenges in the field. For instance, future studies should investigate p-y curves for piles under various combined loads, considering the influence of construction methods and the installation effect. Additionally, the development of a comprehensive p-y curve database and the application of existing research to new foundation systems are essential for advancing pile technology and fostering innovative designs.
Full article
(This article belongs to the Section Building Structures)
Open AccessArticle
Study on the Damping Efficiency of a Structure with Additional Viscous Dampers Based on the Shaking Table Test
by
Xiang Lan, Longfei Zhang, Baifeng Sun and Wen Pan
Buildings 2024, 14(6), 1506; https://doi.org/10.3390/buildings14061506 - 23 May 2024
Abstract
This study specifically focuses on the damping efficiency of a damped structure with additional viscous dampers. A two-layer steel frame structure with eight sets of viscous dampers is used to conduct a series of seismic simulation shaking table tests, including a non-damped structure
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This study specifically focuses on the damping efficiency of a damped structure with additional viscous dampers. A two-layer steel frame structure with eight sets of viscous dampers is used to conduct a series of seismic simulation shaking table tests, including a non-damped structure without dampers and two damped structures with dampers placed at 1/2 and 1/6 of the beam span, respectively. By conducting these tests, the energy dissipation, force, and displacement of the damper, as well as the parameters of the structure such as floor displacement and acceleration, are obtained. The main damping efficiency indicators of the damped structure are calculated, including the additional damping ratio, inter-story displacement utilization rate, as well as the reduction rate of the vertex displacement and the base shear relative to the non-damped structure. The study shows that the viscous dampers exhibit full hysteresis loops and a strong energy dissipation capacity in the structure. The seismic response of the vertex displacement and base shear in the damped structure is significantly smaller than that in the non-damped structure. Under different seismic levels, including frequent earthquakes, occasional earthquakes, and rare earthquakes, the damping effect of the dampers placed at 1/2 of the beam span is significantly better than that placed at 1/6 of the beam span. For example, the additional damping ratio for the X-direction artificial wave REN is 19% and 11%, 20% and 13%, and 13% and 11%, respectively. The patterns for inter-story displacement utilization ratio, reduction rate of the vertex displacement, and reduction rate of the base shear are similar. The research findings strongly indicate that the damped structure with additional viscous dampers exhibits excellent damping efficiency. In future damping design, designers need to fully consider the placement of viscous dampers within the beam span.
Full article
(This article belongs to the Special Issue Advances and Applications in Structural Vibration Control)
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Open AccessArticle
Research on the Design Strategies of Public Outdoor Spaces in Government Centers from a Health Perspective
by
Yilin Wang, Wenjun Peng, Yanyan Huang, Tiancheng Yang, Xinyu Du, Xinyan Wang, Zhengming Zhang and Liang Zhu
Buildings 2024, 14(6), 1505; https://doi.org/10.3390/buildings14061505 - 23 May 2024
Abstract
This study delves into an investigation of urban public outdoor spaces (POSs) from a health-oriented perspective, recognizing varied health needs encompassing physical, psychological, social, and environmental aspects. In this study, POSs of two typical government service centers (GSCs) were analyzed based on their
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This study delves into an investigation of urban public outdoor spaces (POSs) from a health-oriented perspective, recognizing varied health needs encompassing physical, psychological, social, and environmental aspects. In this study, POSs of two typical government service centers (GSCs) were analyzed based on their structure, user demographics, and user satisfaction, revealing several problems with the current GSC POS designs. To address these problems, principles for GSC POS design were proposed for natural, playing, and social spaces and applied to redesign the Wuchang GSC. Firstly, through on-site surveys, questionnaire surveys, and data analysis, the existing problems in promoting residents’ health in the GSC POSs were revealed, such as the insufficient greening of natural spaces, lack of interest in playing spaces, and unreasonable design of the scale of social spaces. Based on the above analysis, a health design optimization principle based on Maslow’s theory is proposed. Firstly, improvement solutions were proposed and implemented for green spaces, such as using more diversified natural elements, zone differentiation, and landscape improvements to promote the health of users. Secondly, the leisure and sports needs of different age groups can be met simultaneously by diversifying the layout and functional settings of playing spaces. Finally, public spaces suitable for social interaction were redesigned to promote the psychological health of citizens in social activities by optimizing the scale of communication spaces. The proposed design optimization strategies for GSCs not only provide theoretical support for the healthy design of POSs but also provide useful references for the healthy development of urban public spaces.
Full article
(This article belongs to the Special Issue Advances of Healthy Environment Design in Urban Development)
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Open AccessArticle
Numerical Analysis of the Dynamic Response of Concrete Bridge Piers under the Impact of Rock Debris Flow
by
Mai-Li Cheng
Buildings 2024, 14(6), 1504; https://doi.org/10.3390/buildings14061504 - 23 May 2024
Abstract
The impact and damage caused by debris flow on concrete bridges have become a typical disaster scenario. However, the impact disaster mechanism of debris flow on bridge structures remains unclear. This study focused on investigating the impact mechanism of debris avalanches on concrete
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The impact and damage caused by debris flow on concrete bridges have become a typical disaster scenario. However, the impact disaster mechanism of debris flow on bridge structures remains unclear. This study focused on investigating the impact mechanism of debris avalanches on concrete bridge piers. By employing the discrete element numerical simulation method to examine the effect of debris on concrete bridge piers, the analysis explored the influence of three significant factors: the pier’s section shape, the impact distance, and the slope angle of the sliding chute. The discussions included the accumulation pattern of rock debris, the impact force on the pier, and the shear force and bending moment at the pier’s bottom, as well as the displacement and velocity response laws at the pier’s top. The results demonstrate that rectangularly shaped piers have a high efficiency in obstructing debris, leading to higher impact forces and internal forces on piers. Arched-shaped piers exhibit a short-duration, high-peak instantaneous impact from debris. Increasing the impact distance of the piers can significantly reduce the impact force of debris. The accumulation height of debris, pier impact force, and the pier’s bottom internal forces decrease and then increase with the increase in slope angles, with a 45° slope angle being the critical point for the transition of debris impact on piers. The results can provide references for the disaster prevention design of concrete bridge structures in hazardous mountainous areas.
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(This article belongs to the Section Building Structures)
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Open AccessArticle
Effects of Steel Fiber Content on Compressive Properties and Constitutive Relation of Ultra-High Performance Shotcrete (UHPSC)
by
Shijie Xiao, Jianyu Yang, Zelin Liu, Weijun Yang and Jiangang He
Buildings 2024, 14(6), 1503; https://doi.org/10.3390/buildings14061503 - 23 May 2024
Abstract
Shotcrete is widely used in civil engineering as a supporting structure. In this paper, the compressive behavior of ultra-high-performance shotcrete (UHPSC) with different steel fiber content by volume (0, 0.5%, 0.75%, 1%, 1.25%, 1.5%) was investigated. The results showed that the failure pattern
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Shotcrete is widely used in civil engineering as a supporting structure. In this paper, the compressive behavior of ultra-high-performance shotcrete (UHPSC) with different steel fiber content by volume (0, 0.5%, 0.75%, 1%, 1.25%, 1.5%) was investigated. The results showed that the failure pattern of UHPSC was changed from brittle failure to ductile failure with the increase in steel fiber content. The compressive strength, peak strain and compressive toughness of UHPSC increased with the increase in steel fiber content, but the elastic modulus and Poisson’s ratio did not change significantly. With content of 1.5% steel fibers, its axial compressive strength, peak strain and compressive strain energy were 122.7 MPa, 3749 με and 0.269 MPa, respectively, increased by 14%, 23.5% and 55.5% compared with those without steel fiber. The peak strain and compressive toughness were higher than that of ultra-high-performance concrete (UHPC), while the elastic modulus of UHPSC was lower than that of UHPC. Based on the experimental data, the relationship between compressive strength, peak strain, compressive toughness and the change in the characteristic value of steel fiber content (λf) were revealed. The uniaxial compressive constitutive model of UHPSC with different steel fiber content was established and reflected the change rule of the shape parameter of α (constitutive model ascending section) and β (constitutive model descending section) with λf. The experimental results were in good agreement with the model calculation results, which can provide theoretical support for the structural design of UHPSC.
Full article
(This article belongs to the Special Issue Mechanical Performance of Ultra-High-Performance Concrete (UHPC) and Its Composite Structures)
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Open AccessArticle
Numerical Validation of Fully Coupled Nonlinear Seismic Soil–Pile–Structure Interaction
by
Oğuzhan Çetindemir and Abdullah Can Zülfikar
Buildings 2024, 14(6), 1502; https://doi.org/10.3390/buildings14061502 - 22 May 2024
Abstract
While many researchers have broadly studied soil–structure interaction (SSI) problems to comprehend SSI effects on the overall system’s behavior, some critical numerical modeling issues have not been sufficiently investigated to achieve the most accurate results. Furthermore, most scholars have not provided detailed explanations
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While many researchers have broadly studied soil–structure interaction (SSI) problems to comprehend SSI effects on the overall system’s behavior, some critical numerical modeling issues have not been sufficiently investigated to achieve the most accurate results. Furthermore, most scholars have not provided detailed explanations of the validation process for their proposed numerical models. Modeling pile foundations in a three-dimensional (3D) continuum system in a fully coupled manner is often challenging for engineers who do not specialize in structural and geotechnical earthquake engineering, as it can be very time-consuming and complicated. Therefore, this work aims to validate a finite element model of seismic soil–pile–structure interaction (SPSI) problems in a continuum soil body by comparing the results of numerical models with those of a centrifuge test and computed numerical simulations available in the literature. In this regard, several newly developed elements in OpenSees (Version 3.6.0) are tested. The results of this work demonstrate a closer alignment with prior experimental research findings. It is believed that providing detailed numerical modeling and validation processes will assist researchers in better understanding crucial issues in modeling soil–pile–structure interaction problems.
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(This article belongs to the Section Building Structures)
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Open AccessArticle
Evaluating the Performance of a Combined Vertical Wall–Horizontal Roof Solar Chimney for the Natural Ventilation of Buildings
by
Y Quoc Nguyen and Trieu Nhat Huynh
Buildings 2024, 14(6), 1501; https://doi.org/10.3390/buildings14061501 - 22 May 2024
Abstract
The natural ventilation of buildings can be achieved effectively with solar chimneys, which are classified into wall, roof, and combined wall–roof configurations. Among the combined systems investigated in the literature, vertical wall–horizontal roof solar chimneys have not been evaluated thoroughly. This study investigates
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The natural ventilation of buildings can be achieved effectively with solar chimneys, which are classified into wall, roof, and combined wall–roof configurations. Among the combined systems investigated in the literature, vertical wall–horizontal roof solar chimneys have not been evaluated thoroughly. This study investigates the performance of a combined vertical wall–horizontal roof solar chimney numerically. A two-dimensional Computational Fluid Dynamics (CFD) model is employed to examine the flow and thermal characteristics under various influencing factors relating to the chimney’s geometry, the flow resistance caused by the bend connecting the vertical and horizontal portions, the reverse flow at the outlet, and the location of the heat source. Compared to a vertical wall chimney at the same cavity height, the combined system always had a lower flow rate but had a higher thermal efficiency at some length-to-total-height ratios. Heating the upper walls induced higher flow rates but lower thermal efficiency. Particularly, the effect of the bend on the flow rate was more important than that of the reverse flow at the outlet. These results imply that a combined chimney is preferred over a vertical one for heating applications, wherein the combined chimney should have transparent upper walls.
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(This article belongs to the Special Issue Dealing with Extreme Heat: Intelligent Approaches for Improved Building Performance and Occupant Thermal Comfort)
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Deformation Characteristics and Energy Evolution Rules of Siltstone under Stepwise Cyclic Loading and Unloading
by
Shengjun Miao, Xiangfan Shang, Hui Wang, Mingchun Liang, Pengjin Yang and Chunkang Liu
Buildings 2024, 14(6), 1500; https://doi.org/10.3390/buildings14061500 - 22 May 2024
Abstract
Uniaxial step cyclic loading and unloading tests on siltstone were conducted to investigate the mechanisms and evolution characteristics of rock deformation, including elastic, viscoelastic, and plastic aspects. This study proposes a method for separating dissipated energy into damage energy, which is used for
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Uniaxial step cyclic loading and unloading tests on siltstone were conducted to investigate the mechanisms and evolution characteristics of rock deformation, including elastic, viscoelastic, and plastic aspects. This study proposes a method for separating dissipated energy into damage energy, which is used for particle slippage and structural fractures, and plastic energy, which remains in cracks that do not open after unloading. Additionally, elastic energy is divided into particle elastic energy, released by particle rebound, and crack elastic energy, released by the reopening of compacted cracks. The results indicate that as the stress amplitude increases, the damage energy consumption, plastic energy consumption, particle elastic energy, and crack elastic energy increase. At peak stress, significant expansion and penetration of cracks within the rock sample occur, leading to a sharp increase in damage energy consumption and a dramatic decrease in the rock sample’s mechanical properties, with the particle elastic energy dropping quickly. Plastic energy dissipation relates solely to cracks that do not reopen during unloading, with minimal change after reaching peak stress. The calculated damage variables, based on damage energy consumption, align with the deformation and energy characteristics of the rock, providing a reasonable description of the damage development process of the rock under cyclic loading and unloading.
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(This article belongs to the Special Issue Monitoring and Prevention of Dynamic Disasters in Deep Underground Engineering)
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Children’s Hospital Environment Design Based on AHP/QFD and Other Theoretical Models
by
Haohua Zheng, Lingying Liu, Qi Zhang, Yihan Wang and Yangyang Wei
Buildings 2024, 14(6), 1499; https://doi.org/10.3390/buildings14061499 - 22 May 2024
Abstract
Spatial environmental factors can effectively alleviate children’s fear of the medical environment when they seek medical treatment. This study focuses on the special environmental space of a children’s hospital, thoroughly considering the emotional needs of and the therapeutic effects on children as a
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Spatial environmental factors can effectively alleviate children’s fear of the medical environment when they seek medical treatment. This study focuses on the special environmental space of a children’s hospital, thoroughly considering the emotional needs of and the therapeutic effects on children as a unique group during medical treatment. By analyzing the existing design of children’s hospital environments, this research actively explores more suitable environmental design solutions for children’s healthcare settings. This study summarizes the user demand factors of children’s hospital environmental space design through field research and analysis interviews and calculates the weight indicators of user demand through AHP hierarchical analysis. On this basis, based on the QFD theoretical model, user needs are transformed into technical needs, and a house of quality is drawn to judge the conflicting needs through the positive and negative correlations between the factors. Finally, the forty invention principles of the TRIZ innovation theory are used to propose a solution to the environmental space program of children’s hospitals to obtain the optimal solution to the environmental space design effect. This study shows that incorporating theoretical models of AHP, QFD, and TRIZ into the environmental space design of children’s hospitals can improve and optimize the environmental space of children’s hospitals, and the example of a children’s hospital can be designed to meet children’s emotional needs according to this model. A series of interesting innovative practices, such as personalized digital information diagnosis and treatment, interesting visual guidance, and the implicit healing effect of color, can be realized. The aim is to create a modern, child-friendly medical environment that not only meets medical functional requirements but also effectively alleviates the stress of pediatric patients during diagnosis and treatment. This study preliminarily verifies the scientificity and rationality of the entire design process and provides a reference for the design practices of children’s hospital environments.
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(This article belongs to the Special Issue Indoor Environmental Quality and Human Wellbeing)
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