Long-term stability analysis and deformation prediction of soft soil foundation pit in Taihu Tunnel

被引：2
|
作者：
Zhou A. [1 ,2 ]
Wang B. [2 ]
Li J.-T. [2 ]
Zhou X. [3 ]
Xia W.-J. [3 ]
机构：
[1] School of Civil and Environmental Engineering, Hubei University of Technology, Wuhan
[2] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan
[3] Jiangsu Provincial Transportation Engineering and Construction Bureau, Nanjing
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2022年 / 56卷 / 04期
关键词：
Overload; Soft soil; Stability; Time-dependent deformation;
D O I：
10.3785/j.issn.1008-973X.2022.04.008
中图分类号：
学科分类号：
摘要：
An intelligent inversion system based on support vector machine (SVM) was established, and creep tests of soft soil were conducted in laboratory under the background of a large foundation pit project of Taihu tunnel. An innovative analysis method was proposed by combining the intelligent inversion and creep tests. The basic physical and mechanical parameters and creep parameters of relevant soil layers were determined combined with the monitoring data. The feasibility of the method in long-term stability analysis and deformation prediction of soft soil foundation pit under overloading was verified by analyzing the deformation at the site of soft soil foundation pit under overloading. The method was applied to the optimization design under overloading of Taihu tunnel, and good results were obtained. Copyright ©2022 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：692 / 701
页数：9
相关论文
共 26 条
  • [1] LIU Jian-hang, LIU Guo-bin, FAN Yi-qun, The theory and its practice by using the rule of time-space effect in soft soil excavation, Underground Engineering and Tunnels, 3, pp. 7-12, (1999)
  • [2] ZHUANG Li, ZHOU Shun-hua, GONG Quan-mei, Et al., Numerical analysis of creep induced by excavating slope in soft soil pit with larger area, Chinese Journal of Rock Mechanics and Engineering, 25, pp. 4209-4213, (2006)
  • [3] WANG J H, XU Z H, WANG W D., Wall and ground movements due to deep excavations in Shanghai soft soils, Journal of Geotechnical and Geoenvironmental Engineering, 136, 7, pp. 985-994, (2010)
  • [4] LI Xi-lin, WEI Xiang, LIANG Zhi-rong, Design practice and analysis of deformation control of deep excavations in soft soil areas, Chinese Journal of Geotechnical Engineering, 36, pp. 160-164, (2014)
  • [5] LIANG Fa-yun, ZHAO ming-yi, CHEN Shang-rong, Analysis on bearing and deforming behavior of a large-scale double annular arched girders structural system in deep excavation, Journal of Hunan University: Natural Sciences, 45, pp. 173-177, (2018)
  • [6] HARAHAP S E, OU C Y., Finite element analysis of time-dependent behavior in deep excavations, Computers and Geotechnics, 119, (2020)
  • [7] QIAN Qi-hu, Challenges faced by underground projects construction safety and countermeasures, Chinese Journal of Rock Mechanics and Engineering, 31, 10, pp. 1945-1956, (2012)
  • [8] WAN Xing, GE Ming, HE Zhi-jiang, Et al., Characteristics of deformation of retaining wall due to deep excavation in Nanjing, Chinese Journal of Geotechnical Engineering, 41, pp. 85-88, (2019)
  • [9] WANG Li-zhong, LIU Ya-jing, LONG Fan, Et al., Collapse of deep excavations for metro lines in soft clay, Chinese Journal of Geotechnical Engineering, 42, 9, pp. 1603-1611, (2020)
  • [10] BAO Xu-fan, Study on deformation control methods of super-large foundation pit in soft soil, (2008)
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