上海交通大学学报

上海交通大学学报 ›› 2009, Vol. 43 ›› Issue (06): 972-975.doi: 10.16183/j.cnki.jsjtu.2009.06.027

所属专题： 王建华教授学报发文专辑

• •    下一篇

无支撑基坑变形特性的三维有限元分析

侯永茂1, 王建华1(), 顾倩燕2   

  1. 1.上海交通大学土木工程系，上海 　200030
    2.中船第九设计研究院工程有限公司，上海 　200063
  • 收稿日期:2008-09-24 出版日期:2009-06-01 发布日期:2021-04-25
  • 作者简介:侯永茂（1981-)，男，山东莱州市人，博士生，研究方向：地下结构，数值模拟。|王建华（联系人），男，教授，博士生导师，电话（Tel): 021-62932915; E-mail: wjh417@sjtu.edu.cn.
  • 基金资助:
    上海市登山行动重大资助项目(00062012005);国家自然科学基金资助项目(50679041)

3D FEM Analysis on Deformation Performance of Retaining Structures in Unbraced Excavation

HOU Yong-mao1, WANG Jian-hua1(), GU Qian-yan2   

  1. 1.Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200030, China
    2.China Shipbuilding NDRI Engineering Company Ltd, Shanghai 200063, China
  • Received:2008-09-24 Online:2009-06-01 Published:2021-04-25

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摘要：

建立三维有限元模型对采用格型地下连续墙和高桩梁板地下连续墙围护结构的船坞基坑进行分析，计算中假定土体为横观各向同性体，考虑土与结构的共同作用以及土体分区开挖．通过分析实测数据和计算结果，研究了无支撑船坞基坑开挖过程中格型地下连续墙和高桩梁板地下连续墙的变形特性．计算结果表明，船坞基坑围护结构的变形性状受其结构形式以及施工工况的影响，基坑内部桩基对船坞基坑围护结构变形影响较大，船坞基坑的开挖对临近基坑的影响很小．

关键词: 格型地下连续墙, 高桩梁板地下连续墙, 无支撑, 三维有限元方法, 变形特性

Abstract:

Three-dimensional finite element method was used to analyze an unbraced dock excavation. Cellular diaphragm wall and high-piled slab & beam diaphragm wall were used as the retaining structures of the excavation. The soil was assumed as cross-isotropy elastic material. The calculated results of retaining wall deflections agree well with the field measurements. The calculated results show that the deformation behavior of the retaining wall is influenced by its structure form and construction sequence of the excavation. The piles in the excavation can control the deformation of the retaining wall effectively. The effect of the dock excavation on the adjacent excavation was also discussed.

Key words: cellular diaphragm wall, high-piled slab & beam diaphragm wall, unbraced excavation, threedimensional finite element method, deformation performance

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