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Construction in Urban Underground Space
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Construction in Urban Underground Space

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Construction Management, and Computers & Digitization".

Deadline for manuscript submissions: 20 June 2024 | Viewed by 1533

Special Issue Editors

Dr. Mingming He

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
Interests: unconventional rock mechanical behavior; stability of deep tunnels; geotechnical deep learning and artificial intelligence; digital drilling technology
Special Issues, Collections and Topics in MDPI journals
Dr. Yonggang Zhang

E-Mail Website
Guest Editor
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
Interests: stability of deep tunnels; geotechnical deep learning; artificial intelligence

Special Issue Information

Dear Colleagues,

The construction landscape is evolving, and urban planners are increasingly turning their attention to the untapped potential of urban underground space. This emerging field presents a paradigm shift in how we conceive, design and build structures, challenging traditional notions of city development. The exploration of underground space offers a myriad of opportunities, from alleviating surface congestion to providing innovative solutions for housing, transportation and utilities. In the past, construction in urban underground space was often limited to essential infrastructure such as tunnels and utility networks. However, contemporary perspectives are expanding to encompass a broader spectrum of possibilities, including underground commercial spaces, recreational facilities and even subterranean residential areas. This shift requires a reevaluation of construction methodologies, safety protocols and sustainable practices specific to the challenges posed by underground environments.

This Special Issue invites contributions that delve into the multifaceted aspects of construction in urban underground spaces. We welcome research papers, case studies and innovative projects that address key themes, and topics of interest include, but are not limited to:

  • Development of specialized construction techniques;
  • Structural design considerations;
  • Environmental impact assessments;
  • Advancements in underground construction materials;
  • Impact on urban planning and architecture;
  • Underground space and underground construction.

Dr. Mingming He
Dr. Yonggang Zhang
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. Buildings is an international peer-reviewed open access monthly 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 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

  • underground construction materials
  • underground construction
  • construction techniques
  • environmental impact assessments
  • stability of deep tunnels
  • geotechnical deep learning
  • artificial intelligence

Published Papers (3 papers)

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Research

18 pages, 9174 KiB  
Article
Study on the Failure Process and Acoustic Emission Characteristics of Freeze–Thawed Sandstone under Cyclic Loading and Unloading
by Chaoyun Yu, Shenghui Huang, Junkun Li, Xiangye Wu, Yuhang Tian and Xiankai Bao
Buildings 2024, 14(5), 1264; https://doi.org/10.3390/buildings14051264 - 30 Apr 2024
Viewed by 269
Abstract
In order to investigate freeze–thawed red sandstone failure processes under cyclic loading and unloading conditions, real-time acoustic emission (AE) and scanning electron microscopy (SEM) techniques were used to reveal the fracture process of the saturated red sandstone after cyclic loading and unloading tests [...] Read more.
In order to investigate freeze–thawed red sandstone failure processes under cyclic loading and unloading conditions, real-time acoustic emission (AE) and scanning electron microscopy (SEM) techniques were used to reveal the fracture process of the saturated red sandstone after cyclic loading and unloading tests using uniaxial compression. The results show that the stress–strain curves of the freeze–thawed sandstones show signs of hysteresis and exhibit a two-stage evolution of “sparse → dense”. In the cyclic loading and unloading process, the modulus of elasticity in the loading process is always larger than that in the unloading process, while the Poisson’s ratio is the opposite, and the radial irreversible strain and cumulative irreversible strain are larger than those in the axial direction. As the number of freeze–thaw cycles increases, the rock specimens need more cycles of loading and unloading to make the crack volume compressive strain Δεcv+ reach the maximum value and tend to stabilize, while the crack volume extensional strain Δεcv− tends to decrease gradually. This study also shows that the growth phase of the cyclic loading and unloading process has more ringing counts and a shorter duration, while the slow degradation phase has more ringing counts with loading and less with unloading. In addition, the F-T cycle gradually changes the internal microcracks of the red sandstone from shear damage, which is dominated by shear cracks, to tensile damage, which is dominated by tensile cracks. This study’s findings contribute to our knowledge of the mechanical characteristics and sandstone’s degradation process following F-T treatment, and also serve as a guide for engineering stability analyses conducted in the presence of multiphysical field coupling. Full article
(This article belongs to the Special Issue Construction in Urban Underground Space)
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19 pages, 15594 KiB  
Article
Experimental Study on Grout–Soil Interaction Effects in Sandy Soil under Different Water-to-Cement Ratios
by Huanxiao Hu, Yufan Lu, Chao Deng, Benqing Gan, Zhongliang Xie, Yuehui Cai and Aikun Chu
Buildings 2024, 14(4), 947; https://doi.org/10.3390/buildings14040947 - 29 Mar 2024
Cited by 1 | Viewed by 489
Abstract
Due to the unique characteristics of sandy soil layers, there is often a coupling effect of multiple grout diffusion patterns in the grouting process, and different slurry diffusion modes may lead to different responses of soil structures. In this study, laboratory grouting model [...] Read more.
Due to the unique characteristics of sandy soil layers, there is often a coupling effect of multiple grout diffusion patterns in the grouting process, and different slurry diffusion modes may lead to different responses of soil structures. In this study, laboratory grouting model tests were conducted with homogeneous sand under different water-to-cement (w/c) ratios to reveal the temporal variations in grouting pressure, soil stress fields, and displacement fields during the grout diffusion process. The results show that, during the grouting process in the fine sand layer, the grout mainly exhibited a compaction–splitting diffusion mode. The farther away from the grouting center, the more pronounced the hysteresis effect of soil pressure caused by grout diffusion. Meanwhile, as the w/c ratio increased, the diffusion mode between the slurry and the soil was in a transitional state. At w/c > 1.2, the primary pattern changed from the fracture–compaction pattern to the permeation–fracture–compaction pattern and fracture–permeation pattern. And the overall trend of the grouting pressure curve was similar under all of the w/c ratio conditions, showing a trend of increasing to the maximum value of the pressure first and then decreasing. With the increase in the water–cement ratio, the overall value of the grouting pressure curve showed a decreasing trend, the pressure value increased more slowly with time before reaching the maximum value, and the more obvious the influence of water–cement ratio was when w/c > 1.2. Additionally, the surface displacement also exhibited an overall decreasing trend, and it had no obvious lifting value under the condition of w/c = 1.6. Full article
(This article belongs to the Special Issue Construction in Urban Underground Space)
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12 pages, 1543 KiB  
Article
Effect of Confining Pressure on the Macro- and Microscopic Mechanisms of Diorite under Triaxial Unloading Conditions
by Xiaoxiao Duan, Dengke Yang and Xuexu An
Buildings 2024, 14(4), 866; https://doi.org/10.3390/buildings14040866 - 22 Mar 2024
Viewed by 399
Abstract
In this study, the response mechanism between macro- and microscales of deep hard-rock diorite is investigated under loading and unloading conditions. Moreover, the statistical theory is combined with particle flow code simulations to establish a correlation between unloading rates observed in laboratory experiments [...] Read more.
In this study, the response mechanism between macro- and microscales of deep hard-rock diorite is investigated under loading and unloading conditions. Moreover, the statistical theory is combined with particle flow code simulations to establish a correlation between unloading rates observed in laboratory experiments and numerical simulations. Subsequent numerical tests under varying confining pressures are conducted to examine the macroscopic mechanical properties and the evolution of particle velocity, displacement, contact force chain failures, and microcracks in both axial and radial directions of the numerical rock samples during the loading and unloading phases. The findings indicate that the confining pressure strength curve displays an instantaneous fluctuation response during unloading, which intensifies with higher initial confining pressures. This suggests that rock sample damage progresses in multiple stages of expansion and penetration. The study also reveals that with increased initial confining pressure, there is a decrease in particle velocity along the unloading direction and an increase in particle displacement and the number of contact force chain failures, indicating more severe radial expansion of the rock sample. Furthermore, microcracks predominantly accumulate near the unloading surface, and their total number escalates with rising confining pressure, suggesting that higher confining pressures promote the development and expansion of internal microcracks. Full article
(This article belongs to the Special Issue Construction in Urban Underground Space)
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