Application of FEM to critical height of soil-nailing foundation pit

YU Jian-lin; ZHANG Wen-long

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Application of FEM to critical height of soil-nailing foundation pit

更新时间：2026-06-25

- Application of FEM to critical height of soil-nailing foundation pit
- Vol. 29, Issue 10, (2008)
- 作者机构：
  
  1. 浙江大学软弱土与环境土工教育部重点实验室,杭州,310027
  2. 上海现代建筑设计集团申元岩土工程有限公司,上海,200011
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB115
- Online First：03 August 2013，
  
  Published：2008
- 稿件说明：
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YU Jian-lin, ZHANG Wen-long. Application of FEM to critical height of soil-nailing foundation pit[J]. 2008, 29(10).
DOI：

YU Jian-lin, ZHANG Wen-long. Application of FEM to critical height of soil-nailing foundation pit[J]. 2008, 29(10). DOI：

摘要

利用有限元方法对基坑土钉支护的极限高度问题进行了研究，分析了影响基坑土钉支护极限高度的主要因素。研究结果表明：基坑土钉支护存在着极限高度，极限高度的求解与地基极限承载力问题有着密切联系，从而利用地基极限承载力的有限元求解思路求得了基坑土钉支护的极限高度；研究了基坑土钉支护参数对极限高度的影响，得出极限高度与各个基坑土钉支护主要参数之间的部分变化规律，并在匀质土体的情况下与土塑性力学中的上下限定理得出的理论解进行了比较，经工程实例验证，结果比较吻合，为基坑土钉支护极限高度的确定提供了一种新的思路。

Abstract

By using FEM

the critical height of soil-nailing foundation pit is studied; and the influential factors of critical height of soil-nailing foundation pit is analyzed too. The studying results indicate that the soil-nailing foundation pit has a critical height

the critical height of soil-nailing foundation pit is related to the ultimate bearing capacity of foundation; so through the solving thought of ultimate bearing capacity of foundation can get the result of the critical height of soil-nailing foundation pit; studying the influences and laws between the critical height and the chief parameters of soil-nailing foundation pit

comparing the result with the theoretical result from upper and lower solutions of soil plastic mechanics under the condition of homogeneous soil. The case studies verify that this method can fit each other well. A new idea for determining critical height of soil-nailing foundation pit is provided.

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