Finite element analysis for a deep excavation in soft clay supported by lime-cement columns

被引：12
|
作者：
Bozkurt, Sinem [1 ]
Abed, Ayman [1 ]
Karstunen, Minna [1 ]
机构：
[1] Univ Technol, Dept Architecture & Civil Engn, SE-41296 Gothenburg, Sweden
来源：
COMPUTERS AND GEOTECHNICS | 2023年 / 162卷
基金：
瑞典研究理事会;
关键词：
Deep excavation; Deep mixing; Lime-cement columns; Soft soil; Constitutive models; BEHAVIOR; MODEL; PERMEABILITY; ANISOTROPY; FAILURE; PANELS; WALL;
D O I：
10.1016/j.compgeo.2023.105687
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The aim of the paper is to simulate the response of a deep excavation supported by sheet pile walls and lime-cement columns. The application of the deep mixing technique using lime-cement products in deep excavations changes the initial state of the natural soil and creates substantial displacements associated with the installation effects. In this paper, the influence of lime-cement stabilisation was investigated using the finite element method for an instrumented braced excavation. The 2D finite element analyses were performed with advanced constitutive models for both natural clay and stabilised soil, exploiting the laboratory test made on both field mixed and laboratory mixed stabilised clay samples. The numerical results show that taking account of installation effects provides realistic predictions of deformation, excess pore water pressure evolution, as well as the structural forces in the struts.
引用
收藏
页数：19
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