Simplified method for calculating maximum deformation of diaphragm walls 
caused by braced excavation in soft clays

JIN Xiao-fei; LIANG Shu-ting; ZHU Xiao-jun; ZHANG Yu-liang

doi:10.16285/j.rsm.2015.S2.082

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Simplified method for calculating maximum deformation of diaphragm walls caused by braced excavation in soft clays

更新时间：2026-06-25

- Simplified method for calculating maximum deformation of diaphragm walls caused by braced excavation in soft clays
- Vol. 36, Issue S2, Pages: 583-587(2015)
- 作者机构：
  
  1. 东南大学土木工程学院,南京,210096
  2. 东南大学建筑设计研究院有限公司,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S2.082
  CLC： TU476
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
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JIN Xiao-fei, LIANG Shu-ting, ZHU Xiao-jun, et al. Simplified method for calculating maximum deformation of diaphragm walls caused by braced excavation in soft clays[J]. 2015, 36(S2): 583-587.
DOI：

JIN Xiao-fei, LIANG Shu-ting, ZHU Xiao-jun, et al. Simplified method for calculating maximum deformation of diaphragm walls caused by braced excavation in soft clays[J]. 2015, 36(S2): 583-587. DOI： 10.16285/j.rsm.2015.S2.082.

摘要

采用有限单元法研究了影响软土地区地下连续墙最大侧向变形的主要参数。针对基坑开挖深度H、基坑开挖宽度B、单位宽度地下连续墙系统刚度S、支撑结构的轴向刚度及黏土归一化的不排水抗剪强度为不排水抗剪强度，为有效垂直应力）5个参数进行分析研究，通过回归分析研究结果，给出地下连续墙最大侧向变形的简易计算方法。利用简易计算方法，计算实际工程中基坑案例的地下连续墙最大侧向变形，并与现场监测结果进行对比，验证了计算方法的准确性，可为以后预估地下连续墙最大侧向变形及检查设计提供参考。

Abstract

By using finite element method

a series of parametric studies is performed for the maximum wall deflection induced by excavation in soft clay. Five main parameters effecting deformation i. e. excavation depth(H)

excavation width(B)

system stiffness(S)

axial stiffness of the supporting structure(Sa)

ratio of the average shear strength over the vertical effective stress

are analyzed. Based on the results of parametric studies，a simplified calculation method for maximum wall deflection is proposed using multiple regression. The proposed method is verified through several case stdudies. The proposed method can be used to preliminarily predict and also check the final results of design.

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