院报 ›› 2014, Vol. 31 ›› Issue (9): 69-73.DOI: 10.3969/j.issn.1001-5485.2014.09.013

• 岩土工程 • 上一篇    下一篇

接头形式对框格式地下连续墙应力变形影响的有限元分析

孔科1,2,王小波1,徐远杰2,潘家军3   

  1. 1.中国水电顾问集团 成都勘测设计研究院,成都 610072;
    2.武汉大学 土木建筑工程学院,武汉 430072;
    3. 水利部岩土力学与工程重点实验室,武汉 430010
  • 收稿日期:2013-07-01 修回日期:2014-09-04 出版日期:2014-09-01 发布日期:2014-09-04
  • 作者简介:孔科(1984-),男,四川邻水人,工程师,博士,主要从事水工结构及岩土工程数值分析研究,(电话)028-87399152(电子信箱)020110003@163.com。
  • 基金资助:
    国家自然科学基金青年基金项目(51109013);水利部公益性行业专项项目(201201039)

Influence of Joints on Stress and Displacement of Sash-shaped Diaphragm Wall by FEM Analysis

KONG Ke1,2, WANG Xiao-bo1, XU Yuan-jie2,PAN Jia-jun3   

  1. 1.Hydrochina Chengdu Engineering Corporation, Chengdu 610072, China;
    2. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China;
    3. Key Laboratory of
    Geotechnical Mechanics and Engineering of the Ministry of Water Resources,Yangtze River Scientific Research Institute, Wuhan 430010,China
  • Received:2013-07-01 Revised:2014-09-04 Online:2014-09-01 Published:2014-09-04

摘要: 在水电工程中采用地下连续墙处理复杂地质条件的地基时,在施工过程中不可避免地产生施工接头,接头的存在对地下连续墙的整体受力性能存在一定的影响,成为困扰工程界的一个难题。根据桐子林水电站末段框格式地下连续墙地质条件,在连续墙上分别设置刚性接头、铰接头及半自由接头,模拟地下连续墙在工程上常采用的各种接头形式,建立了不同接头形式的3组框格式地下连续墙槽段有限元模型。基于ABAQUS软件对框格式地下连续墙在不同接头形式下的施工过程进行了非线性有限元数值模拟,详细分析比较了3种接头形式的地下连续墙在最危险施工工况下的应力与变形,得到了不同的施工接头对框格式地下连续墙应力变形的影响情况,研究成果可为类似工程提供借鉴。

关键词: 框格式地下连续墙, 接头, 非线性, 有限元, 应力与变形

Abstract: Construction joint, which is resulted from underground diaphragm wall construction to deal with complex geological foundation for hydropower project, is a difficulty in engineering because it affects the overall mechanical properties of the underground diaphragm wall. According to the real geological conditions under the last part of diaphragm wall of Tongzilin hydropower project, we established finite element models of sash-shaped underground diaphragm wall with three different kinds of joints (rigid joints, hinged joints and semi-free joints). The stress and deformation of the wall respectively with these three kinds of joints were analyzed and compared under the most adverse working condition in ABAQUS non-linear simulation. The influence of joint on the stress and deformation of underground diaphragm wall was obtained. The result is a reference for similar projects.

Key words: sash-shaped diaphragm wall, joint, non-linear, FEM, stress and deformation

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