安全与环境工程2024，Vol.31Issue(6)：57-66,10.DOI:10.13578/j.cnki.issn.1671-1556.20230484
不同工况下地下连续墙内支撑支护结构的土压力
Soil pressure of bracing underground continuous wall internal support structure in different working conditions
摘要
Abstract
Currently,the design of excavation support systems still relies on the Rankine theory for calculating soil pressures,and existing elastic resistance methods do not consider the actual excavation conditions in their model calculations.This paper presents a theoretical analysis that takes into account the stress path during excavation unloading,and derives the relationship between soil pressure and displacement on the support structure.By using the load increment method,the internal forces and deformation expressions of each retaining wall under different conditions were calculated.A TPX program was developed in Fortran language to compute the soil pressures and displacements of the support structure under various scenarios.The case study of the Wuhan Green Center deep excavation project was conducted using Midas GTS software for numerical analysis,examining the internal forces,displacements,and soil pressures of the support structure under different conditions.A comparison between the theoretical calculations of wall displacement and soil pressure in this study and the field monitoring data and numerical simulation results demonstrate good consistency,confirming the correctness and practicality of the proposed theory.关键词
基坑支护设计/地下连续墙/内支撑/土压力/卸荷应力路径Key words
design of excavation support/underground continuous wall/internal support/soil pressure/unloading stress path分类
资源环境引用本文复制引用
喻莹,王忠凯,王翠英..不同工况下地下连续墙内支撑支护结构的土压力[J].安全与环境工程,2024,31(6):57-66,10.基金项目
国家自然科学基金项目(41772332) （41772332）
