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Applied Sciences
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Recent Advances in Soft Soil Engineering
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Recent Advances in Soft Soil Engineering

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: 20 July 2024 | Viewed by 1637

Special Issue Editors

Dr. Xiangyu Shang

E-Mail Website
Guest Editor
School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: discrete element method for clayey soil; frozen soil mechanics; geotechnical engineering related to deep clayey soil
Dr. Qiyin Zhu

E-Mail Website
Guest Editor
School of Mechanics & Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: geotechnical constitutive relationship; multi-field and multi-scale coupling analysis; numerical calculation of geotechnical engineering

Special Issue Information

Dear Colleagues,

This Special Issue, titled "Recent Advances in Soft Soil Engineering", delves into cutting-edge developments in the field of geotechnical engineering, specifically focusing on the challenges and innovations associated with soft soil. Soft soils, characterized by their low shear strength and high compressibility, pose significant challenges for construction, infrastructure, and environmental sustainability. This Special Issue compiles research contributions from experts worldwide to address critical aspects of soft soil engineering.

The articles within this Special Issue encompass a wide spectrum of topics, including multiscale understanding of the physical and mechanical properties of soft soil, advanced soil characterization and constitutive relationship, innovative foundation design and construction methods, ground improvement technologies, mitigation of potential geohazards in soft soil areas, and proper disposal of contaminated soft soil. Researchers and practitioners in geotechnical and geoenviromental engineering will find valuable insights into mitigating the inherent risks and uncertainties associated with soft soil conditions.

Dr. Xiangyu Shang
Dr. Qiyin Zhu
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. Applied Sciences 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

  • multiscale insight
  • soil characterization
  • foundation design
  • settlement analysis
  • ground improvement
  • sustainable solutions
  • soil stabilization
  • soil pollution
  • infrastructure resilience

Published Papers (2 papers)

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Research

18 pages, 8221 KiB  
Article
Experimental Study on the Relationship between Time-Varying Uplift Displacement and Grout Diffusion in Sand
by Huan-Xiao Hu, Wei Cao, Chao Deng and Yu-Fan Lu
Appl. Sci. 2024, 14(9), 3922; https://doi.org/10.3390/app14093922 - 4 May 2024
Viewed by 393
Abstract
Traditional model tests for soil and rock materials face challenges in observing the slurry diffusion within the soil mass, hindering the understanding of the relationship between grouting-induced ground deformation and grout diffusion. This study conducts grouting diffusion model tests using a self-developed experimental [...] Read more.
Traditional model tests for soil and rock materials face challenges in observing the slurry diffusion within the soil mass, hindering the understanding of the relationship between grouting-induced ground deformation and grout diffusion. This study conducts grouting diffusion model tests using a self-developed experimental setup on both ordinary and transparent sand. We investigate cement slurry diffusion patterns, distribution characteristics, and temporal variations in ground uplift displacement during the grouting process. By leveraging a visualization grouting model and non-intrusive displacement measurements, we directly observe and verify the changes in cement slurry diffusion and ground displacement in transparent sand. The results indicate the following: during non-steady grouting in sand, slurry diffusion progresses from low-pressure infiltration to medium-pressure compaction, culminating in high-pressure fracturing; ground uplift displacement curves exhibit a consistent “step-like” increase with grouting time, featuring accelerated growth after each step; and visualization tests reveal a strong correlation between grouting pressure, slurry diffusion, and corresponding uplift displacement. Distinct features in the grouting pressure plot align with the acceleration phases of the displacement; at a water–cement ratio (w/c) of 0.8, the stratum’s vertical deformation shows a symmetric “higher in the middle, lower on the sides” distribution. As the burial depth decreases, the stratum’s uplift displacement tends to flatten horizontally, especially at w/c = 0.8 and 1.2. Full article
(This article belongs to the Special Issue Recent Advances in Soft Soil Engineering)
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15 pages, 2915 KiB  
Article
Examination of Determinants and Predictive Modeling of Artificially Frozen Soil Strength Utilizing the XGBoost Algorithm
by Chenguang Wang, Chaoyue Yang, Haoran Qin and Yanning Wang
Appl. Sci. 2023, 13(24), 13170; https://doi.org/10.3390/app132413170 - 12 Dec 2023
Viewed by 888
Abstract
A freezing method is usually employed in the construction of metro links. Unconfined compressive strength (UCS) is a pivotal mechanical parameter in freezing design. Due to the limitations of indoor experiments and the complexity of influencing factors, the applicability of empirical strength formulas [...] Read more.
A freezing method is usually employed in the construction of metro links. Unconfined compressive strength (UCS) is a pivotal mechanical parameter in freezing design. Due to the limitations of indoor experiments and the complexity of influencing factors, the applicability of empirical strength formulas is poor. This study predicts the strength of frozen soil with different particle size distributions based on the highly integrated XGBoost algorithm. Compared with other empirical formula methods, the accuracy is high. Through the analysis of Pearson’s correlation coefficient results, further analysis is needed on the nonlinear correlation between the temperature, the strain rate, and the unconfined compressive strength of frozen soil. The results indicated a strong negative correlation between temperature and unconfined compressive strength; the strength initially increased at a faster rate, slowed down during the intermediate phase, and again increased at a faster rate toward the end. There was a positive correlation between the strain rate and the unconfined compressive strength, with the strength exhibiting varying sensitivities to different sizes of strain rates. When the strain rate was relatively small, the strength increased slightly; as the strain rate increased, the strength increased more significantly. Different soils showed similar trends, but differences in the particle size distribution resulted in variations in the final strength. This study can provide a scientific basis for predicting the strength of soil bodies in the freeze–thaw construction of subway connection tunnels. Full article
(This article belongs to the Special Issue Recent Advances in Soft Soil Engineering)
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