Seismic Analysis of Multistoried Buildings

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Structures".

Deadline for manuscript submissions: 10 May 2024 | Viewed by 7577

Special Issue Editor

Laboratoire de Mécanique des Structures et des Systèmes Couplés (LMSSC), Conservatoire National des Arts et Métiers (Cnam), 75003 Paris, France
Interests: seismic analysis of structures; passive energy dissipation systems; structural retrofitting with innovative materials; multi-hazard vulnerability of timber and reinforced concrete structures; FEM; hybrid simulation; machine learning and artificial intelligence techniques

Special Issue Information

Dear Colleagues,

I am pleased to invite you to submit a contribution to the Special Issue “Seismic Analysis of Multistoried Building”of the journal “Buildings”.

Nowdays structures are higher, lighter, and some of them have irregular configuration both in elevation and plan. These buildings need careful design as they become more susceptible to dynamic load activities such as earthquake. During this event, most structures have an inherent damping in them which results in some of the input seismic energy being dissipated, but a large amount of energy is absorbed by the structure, causing it to undergo several deformations and maybe even collapse. So, over the last year, there has been great interest in the design and use of seismic energy dissipation devices (passive, semi-active, active and/or hybrid).

In this Special Issue, original research articles and reviews are welcome. Contributions addressing design, assessment, numerical and experimental investigations, seismic analyses and seismic loss estimation of multistoried builbings are welcome.

I look forward to receiving your contributions.

Dr. Magdalini D. Titirla
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • energy dissipation systems
  • multistoried
  • building
  • earthquake resistance
  • FEM
  • numerical modelling
  • regular buildings
  • irregular buildings

Published Papers (5 papers)

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Research

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19 pages, 10453 KiB  
Article
Assessment of Soft-First-Floor Structures Reinforced by Rocking Frame Based on Seismic Resilience
Buildings 2024, 14(1), 197; https://doi.org/10.3390/buildings14010197 - 12 Jan 2024
Viewed by 437
Abstract
As a no-disturbance integrated-retrofitting technique, an external rocking frame was widely used on reinforced concrete (RC) structures. Yet, with the increasing demand for seismic strengthening of existing buildings, it has become a concern to evaluate the seismic strengthening schemes based on seismic resilience. [...] Read more.
As a no-disturbance integrated-retrofitting technique, an external rocking frame was widely used on reinforced concrete (RC) structures. Yet, with the increasing demand for seismic strengthening of existing buildings, it has become a concern to evaluate the seismic strengthening schemes based on seismic resilience. Firstly, the dynamic equation of the structural system was derived, and the deformation control mechanism was revealed; thus, the corresponding design method was put forward for the rocking frame reinforcement. Secondly, after soft-first-floor structures were reinforced by rocking frames, the evaluation method of the reinforcement scheme was investigated based on seismic resilience. Finally, the feasibility of the assessment method was verified by a soft-first-floor frame structure, and a comparison was made between the method proposed in this paper and the conventional method. The results find that the soft-first-floor structure reinforced by the rocking frame increased by 10% in the inter-layer displacement and improved by 55.6% and 63.0% in the injury and mortality rates, compared to the buckling-restrained brace scheme. This indicates that the reinforcement scheme of soft layer structures with rocking frames is feasible and effective, and the reinforcement evaluation method proposed in this paper can quantitatively reflect the improvement in seismic performance. Full article
(This article belongs to the Special Issue Seismic Analysis of Multistoried Buildings)
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13 pages, 6827 KiB  
Article
An Experimental and Mechanical Study of a Two-Layer, Bioinspired Seismic Isolator for Multistory Buildings
Buildings 2023, 13(9), 2272; https://doi.org/10.3390/buildings13092272 - 07 Sep 2023
Viewed by 579
Abstract
This work illustrates a novel two-layer version of the sliding–stretching isolator recently proposed in the literature to protect buildings and infrastructure from seismic waves. Such a device has a biomimetic character and is formed by rigid members mimicking the role played by human [...] Read more.
This work illustrates a novel two-layer version of the sliding–stretching isolator recently proposed in the literature to protect buildings and infrastructure from seismic waves. Such a device has a biomimetic character and is formed by rigid members mimicking the role played by human arms and legs when walking or running, and deformable membranes referred to as tendons. It tunes the elongation and contraction of the tendons to recenter the system and to safely avoid resonance of the system with earthquake frequencies. The paper illustrates how is possible to generalize the mechanical model of the one-layer isolator (SSI1) formulated in previous studies to account for the presence of the second layer (SSI2 system). The two-layer device doubles the lateral displacement capacity of the system, while keeping the footprint of the device fixed. Shake-table tests on reduced-scaled SSI2 prototypes are employed to derive the constitutive parameters of the proposed mechanical model and to experimentally validate it. The given results demonstrate that SSI2 systems pave the way to real-life applications of sliding–stretching isolators in multistory buildings. Full article
(This article belongs to the Special Issue Seismic Analysis of Multistoried Buildings)
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16 pages, 2420 KiB  
Article
The Effect of Magnitude Mw and Distance Rrup on the Fragility Assessment of a Multistory RC Frame Due to Earthquake-Induced Structural Pounding
Buildings 2023, 13(7), 1832; https://doi.org/10.3390/buildings13071832 - 20 Jul 2023
Cited by 3 | Viewed by 574
Abstract
The effect of an intensity measure’s (IM’s) sufficiency property on the probabilistic assessment of reinforced concrete (RC) structures due to floor-to-floor structural pounding conditions is examined. In the first part of this investigation, efficiency and sufficiency properties of 23 scalar IMs are verified. [...] Read more.
The effect of an intensity measure’s (IM’s) sufficiency property on the probabilistic assessment of reinforced concrete (RC) structures due to floor-to-floor structural pounding conditions is examined. In the first part of this investigation, efficiency and sufficiency properties of 23 scalar IMs are verified. Then, the magnitude Mw and the distance Rrup are examined as elements in a vector with an efficient scalar IM to evaluate whether they have any significant effect on the structural response. Subsequently, probabilistic seismic demand models (PSDMs) are developed using linear regression analyses based on a scalar IM and a vector-valued IM. Fragility curves are developed based on these PSDMs, and the influence of Mw and Rrup on the evaluation of the minimum required separation gap distance dg,min due to the pounding effect is examined. More than two hundred nonlinear time history analyses are performed based on the Cloud Analysis method. Seismic displacement demands that control of the global state of the structure, as well as the probability of structural pounding, are examined. The results of this research indicate that once Mw or Rrup is increased, fragility curves are shifted to greater values of IM, and the probability of the exceedance of a certain performance level is reduced. Also, the predictive power of Rrup seems to be greater than the one of Mw. On the other hand, it is revealed that Mw and Rrup induce variabilities in the demand solutions for adequate separation gap distance between the adjacent structures. Therefore, variation in Mw or Rrup may lead, in some cases, to unacceptable evaluations of the pounding effect in the capacity levels of structures. Full article
(This article belongs to the Special Issue Seismic Analysis of Multistoried Buildings)
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Review

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36 pages, 10482 KiB  
Review
Advancements and Future Prospects of Buckling Restrained Braces for Corrosive-Environments: A Comprehensive Literature Review
Buildings 2023, 13(9), 2156; https://doi.org/10.3390/buildings13092156 - 25 Aug 2023
Cited by 1 | Viewed by 1311
Abstract
The seismic design of structures is crucial for preventing structural collapse and safeguarding human lives. Buckling-restrained braces (BRBs) have emerged as effective seismic protection devices due to their high stiffness, strength, and exceptional energy absorption capabilities. Typically, a conventional BRB consists of a [...] Read more.
The seismic design of structures is crucial for preventing structural collapse and safeguarding human lives. Buckling-restrained braces (BRBs) have emerged as effective seismic protection devices due to their high stiffness, strength, and exceptional energy absorption capabilities. Typically, a conventional BRB consists of a steel core surrounded by concrete-filled steel tubes, with a separation mechanism ensuring axial-only deformation of the core. However, researchers have been increasingly focusing on developing innovative BRB designs with enhanced performance, incorporating different materials and configurations. This paper presents a comprehensive analysis of the development of novel BRBs introduced in the past 15 years. A systematic review approach is adopted, and the selected articles are categorized based on the shapes, materials, and compositions of the BRB components. Although carbon steel has been widely used in numerous studies, its susceptibility to corrosion and its potential impact on the hysteretic behavior of BRBs remain unexplored. Consequently, future research prospects are identified, highlighting the significance of employing anti-corrosive materials in fabricating BRBs to ensure their stable seismic performance under harsh environmental conditions. Investigating novel materials and configurations can lead to the creation of more robust and corrosion-resistant BRBs, thus enhancing the safety and longevity of structures in earthquake-prone areas. Full article
(This article belongs to the Special Issue Seismic Analysis of Multistoried Buildings)
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21 pages, 7651 KiB  
Review
A State-of-the-Art Review of Passive Energy Dissipation Systems in Steel Braces
Buildings 2023, 13(4), 851; https://doi.org/10.3390/buildings13040851 - 24 Mar 2023
Cited by 8 | Viewed by 3887
Abstract
An extensive investigation of the international literature is carried out regarding the passive energy dissipation systems and more specifically the dampers that can be positioned in steel braces to increase the absorption of seismic energy and to protect them from buckling, such as [...] Read more.
An extensive investigation of the international literature is carried out regarding the passive energy dissipation systems and more specifically the dampers that can be positioned in steel braces to increase the absorption of seismic energy and to protect them from buckling, such as Friction (FDs), Metallic (MDs), and Viscous dampers (VDs). This review paper systematically reviews/refers to 196 publications from the literature; it presents a brief overview of the steel braces frames and their problems. The efficacy of all of these types of dampers has been proved, as they have been used all around the world, and their comparison in experimental or numerical studies, applications, and optimization shows that there is no unilateral solution, as the appropriate selection of effective retrofit strategies takes into account parameters such as cost, duration, technical aspects, architectural needs, etc. Finally, the aim of this review paper is to systematically present an overview of passive energy dampers that can be installed on steel braces, summarize the advantages and the disadvantages of each one, compare global parameters such as the relation of velocity and damper force, economic details, and type of study, and facilitate future researchers working in the related field, for its better understanding and development. Full article
(This article belongs to the Special Issue Seismic Analysis of Multistoried Buildings)
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