土工基础

›› 2017, Vol. 31 ›› Issue (2): 175-179.

• 工程实录 • 上一篇    下一篇

考虑护壁的单排抗滑桩分析

李恒杨1,2   

  1. (1.福州大学岩土工程研究所，福州 350108；2.福建工程学院福建工大建筑设计院，福州 350108）
  • 收稿日期:2015-05-18 修回日期:2016-11-15 出版日期:2017-04-20 发布日期:2017-05-04
  • 作者简介:李恒杨(1983-)，男，实验师，工程师，博士，研究方向为环境岩土工程。
  • 基金资助:

    福建省交通规划设计院合作研究项目

Analysis of the Single Row Sliding Resistant Caisson Considering the Casing Effect

LI Hengyang1,2   

  1. (1.Institute of Geotechnical Engineering, Fuzhou University, Fuzhou 350108;
    2.Fujian Gongda Institute of Architectural Design , Fujian University of Technology, Fuzhou 350108)
  • Received:2015-05-18 Revised:2016-11-15 Online:2017-04-20 Published:2017-05-04

摘要： 为揭示护壁结构在抗滑桩滑坡体系中的作用，建立了抗滑桩护壁边坡三维分析模型，研究了不同截面抗滑桩和护壁加固不稳定边坡的安全系数、抗滑桩的位移变形以及内力分布规律。研究表明：（1）考虑护壁结构的抗滑桩边坡体系中，圆形截面抗滑桩比矩形截面抗滑桩安全系数高；（2）护壁引起桩身内力的重新分布并分担了部分的桩身剪力和弯矩，因此在进行抗滑桩设计时，应该考虑护壁在抗滑体系中对整体式桩身结构承载力的贡献能力和作用。

关键词: 抗滑桩, 桩-土相互作用, 数值分析, 护壁

Abstract: A threedimensional finite element analysis of sliding resistant caissoncasing and slope was performed for the evaluation of the effect of the casing. The factor of safety of the slope, deformation of the caisson as well as the stress in the caisson were analyzed with different sections of the caisson and the casings. The results indicate that: 1) High factory of safety can be found in the circular cased caissons, compared that of cased square caissons. 2) Casing results in the redistribution of the stress and can carry portion of shear and bending moment. Therefore, the effect of casing should be considered in the landslide mitigation design.

Key words: Slide Resistant Caisson, CaissonSoil Interaction, Numerical Analysis, Casing