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Advances in Geotechnical Engineering for Sustainability
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Advances in Geotechnical Engineering for Sustainability

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (14 July 2023) | Viewed by 3713

Special Issue Editors

Prof. Dr. Xinyu Xie

E-Mail Website
Guest Editor
Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China
Interests: soil improvement; stabilization/solidification; geomechanics; contaminated soil; green materials
Prof. Dr. Kaifu Liu

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China
Interests: geosynthetic reinforcement; slope stability; numerical simulation; ground subsidence

Special Issue Information

Dear Colleagues,

In the 21st century, environmental protection and sustainable development are important focal points for any industry, and many new technologies and innovations related to sustainable development have emerged, especially in the field of geotechnical engineering, which is closely related to the environment. Developing efficient, environmentally friendly, and low-pollution geotechnical engineering technology has considerable economic and environmental benefits, and has become a research hotspot recently. Numerous geotechnical technology studies, including nonpollution foundation treatment technology, the occurrence and development of ground subsidence as well as the efficient utilization of underground space, the long-term performance of underground structures, and environmentally friendly geotechnical construction materials, are active and useful explorations through which to achieve the goal of sustainability. In addition, geotechnical engineering technology has a broad future in environmental protection, the treatment of contaminated soil and groundwater, and the treatment of landfills and tailing sites. Breakthroughs and new advances in the field of geotechnical engineering contribute to efficient and sustainable development.

With this background, we have established a Special Issue on "Advances in Geotechnical Engineering for Sustainability". The purpose of this Special Issue is to discuss efficient, environmentally friendly, and low-pollution geotechnical engineering technologies and innovations, in addition to other new research on environmental protection and sustainability by using geotechnical perspectives, technologies, and methods.

Topics for the Special Issue include, but are not limited to, the following:

  • Green building and energy-saving materials.
  • Geothermal energy piles and other underground energy structures.
  • Long-term performance and sustainability of underground structures.
  • Urban ground subsidence and underground space development.
  • Control and treatment of contaminated soils and foundations.
  • Efficient and nonpolluting geotechnical construction methods.
  • New technologies and advances in geotechnical engineering for sustainability.

Prof. Dr. Xinyu Xie
Prof. Dr. Kaifu Liu
Guest Editors

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.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 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

  • green building and energy-saving material
  • underground energy structure
  • ecological restoration
  • sustainability of underground space
  • long-term service performance
  • clean and efficient construction methods

Published Papers (3 papers)

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Research

21 pages, 14871 KiB  
Article
Horizontal and Uplift Bearing Characteristics of a Cast-In-Place Micropile Group Foundation in a Plateau Mountainous Area
by Haitao Li and Guangming Ren
Sustainability 2023, 15(18), 13554; https://doi.org/10.3390/su151813554 - 11 Sep 2023
Viewed by 789
Abstract
Micropile groups have been progressively more frequently adopted in the construction of transmission tower bases due to their compact size and flexible construction advantages. However, the load-bearing characteristics and deformation mechanisms of micropile groups are complex, and the study of their coupling effects [...] Read more.
Micropile groups have been progressively more frequently adopted in the construction of transmission tower bases due to their compact size and flexible construction advantages. However, the load-bearing characteristics and deformation mechanisms of micropile groups are complex, and the study of their coupling effects under combined loads remains unclear. Consequently, this paper presents a field static load test of micropile groups in a highland mountainous area. The analysis encompasses the axial force distribution and load-sharing ratio of micropiles. With a focus on micropile groups subjected to both uplift and horizontal combined loads, the coupled effects under different load combination ratios are examined using numerical simulation methods. The key findings are as follows: During the uplift loading process, the load distribution among individual piles is relatively uniform, with lower side friction resistance gradually coming into play to counterbalance the top load. The load–uplift displacement curve exhibits a steep characteristic, making it susceptible to sudden failure in practical engineering applications. Under the simultaneous action of uplift (V) and horizontal (H) loads, the unbalanced lateral frictional resistance on both sides of the pile segment induces additional bending moments, which is an important part affecting the load-coupling mechanisms. The uplift resistance capacity of micropile groups decreases with an increase in horizontal load, while the horizontal load-carrying capacity initially decreases and then increases with an increase in uplift load. The space enclosed by the yield envelope under combined load, and the vertical line of the ultimate load, is divided into a ‘failure zone’ and a ‘safety zone.’ In the design of the pile foundation, the uplift bearing capacity reduced by the ‘failure zone’ should be taken into account. Full article
(This article belongs to the Special Issue Advances in Geotechnical Engineering for Sustainability)
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36 pages, 9022 KiB  
Article
Comparative Analysis of Helical Piles and Granular Anchor Piles for Foundation Stabilization in Expansive Soil: A 3D Numerical Study
by Ammar Alnmr, Richard Paul Ray and Rashad Alsirawan
Sustainability 2023, 15(15), 11975; https://doi.org/10.3390/su151511975 - 3 Aug 2023
Cited by 4 | Viewed by 1520
Abstract
This study investigates the performance of granular anchor piles and helical piles in expansive soils. Expansive soils pose challenges for engineering due to their significant swelling and shrinkage characteristics. Special considerations are required for constructing foundations on expansive soil to mitigate volumetric changes. [...] Read more.
This study investigates the performance of granular anchor piles and helical piles in expansive soils. Expansive soils pose challenges for engineering due to their significant swelling and shrinkage characteristics. Special considerations are required for constructing foundations on expansive soil to mitigate volumetric changes. While helical piles provide uplift resistance in light structures, they may not fully stabilize foundations in expansive soils. In contrast, granular anchor piles offer a simpler alternative for resisting uplift forces. A numerical study was conducted to analyze the pullout loads, compressive loads, and heave behavior of these anchor techniques. The results demonstrate that granular anchor piles outperform helical piles in terms of pullout and compressive performance, with improvements ranging from 17% to 22.5% in pullout capacity and 0.5% to 19% in compressive capacity, depending on specific pile lengths and diameters examined. However, both techniques show similar effectiveness in reducing heave, achieving reductions of over 90% when specific conditions are met. Additionally, the use of high-rise cap piles contributes to significant heave reduction, effectively minimizing heave to nearly negligible levels compared to low-rise cap piles. It is found that the relative density of the granular material has a more pronounced effect on the pullout load compared to the compressive load, and its impact varies depending on the length of the pile. Therefore, it is recommended to avoid high relative density when the pile is entirely within the expansive soil while utilizing higher relative density is beneficial when the pile penetrates and settles in the stable zone. Full article
(This article belongs to the Special Issue Advances in Geotechnical Engineering for Sustainability)
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17 pages, 11245 KiB  
Article
Experimental Study on the Axial Deformation Characteristics of Compacted Lanzhou Loess under Traffic Loads
by Liguo Yang, Shengjun Shao, Fuquan Wang and Liqin Wang
Sustainability 2023, 15(14), 10939; https://doi.org/10.3390/su151410939 - 12 Jul 2023
Cited by 2 | Viewed by 792
Abstract
It is beneficial to the sustainable development of expressway engineering to reuse excavated soil as roadbed filling material. There are a large number of filling projects using loess as a filling material in Northwest China. In this paper, the loess subgrade of an [...] Read more.
It is beneficial to the sustainable development of expressway engineering to reuse excavated soil as roadbed filling material. There are a large number of filling projects using loess as a filling material in Northwest China. In this paper, the loess subgrade of an expressway in Lanzhou is taken as the research object, and a series of experimental studies are conducted using a hollow cylindrical torsion shear system to simulate the formation of a “heart-shaped” stress path and the principal stress rotation (PSR) under long-term traffic loads. The effects of the vertical cyclic dynamic stress ratio, torsion shear stress ratio, initial static shear stress, and intermediate principal stress coefficient on the axial plastic deformation and rebound deformation of compacted loess in Lanzhou were studied. The results show that the vertical cyclic stress ratio (VCSR) has a significant effect on the axial deformation of compacted loess in Lanzhou. When the VCSR is less than 0.6, all the axial strain curves develop stably with the number of cycles. With an increasing VCSR, the axial plastic deformation increases obviously, and the axial rebound deformation also increases. The vertical cyclic dynamic stress of the specimen is constant. Moreover, increasing the torsional shear stress ratio (that is, increasing the amplitude of cyclic shear stress) can greatly increase the development of axial deformation, but it has no effect on the rebound deformation curve. When the initial static shear stress exists in the specimen, the larger the initial static stress ratio (SSR) is, the larger the axial plastic deformation. The axial plastic deformation increases by approximately 33% for every 0.1 increase in the SSR. The rebound deformation of different SSRs fluctuates at the initial stage of cyclic loading, but the final stable rebound deformation is basically the same as that at the initial stage of cyclic loading. The intermediate principal stress coefficient has no effect on the development of axial strain, and the effect on axial rebound deformation is negligible. Finally, the calculation model of the axial plastic strain of Lanzhou compacted loess under traffic loads is obtained. The research results can provide a reference for the durability and settlement prediction in loess engineering. Full article
(This article belongs to the Special Issue Advances in Geotechnical Engineering for Sustainability)
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