基坑开挖对既有桥梁桩基的数值分析

doi:10.3969/j.issn.1007-7162.2014.01.021

广东工业大学学报 ›› 2014, Vol. 31 ›› Issue (1): 107-111.doi: 10.3969/j.issn.1007-7162.2014.01.021

基坑开挖对既有桥梁桩基的数值分析

张雅宁¹，杨春山²，刘锦伟¹，何娜³

1.广东工业大学土木与交通工程学院，广东广州 510006；2.华南理工大学土木与交通学院，广东广州 510641; 3.广东理工职业技术学校, 广东广州 510500

收稿日期:2012-12-06 出版日期:2014-03-29 发布日期:2014-03-29
作者简介:张雅宁（1986-），男，硕士研究生，主要研究方向为基坑开挖.

Numerical Analysis of Responses of Existing Bridge Piers Induced by Deep Excavation

Zhang Ya-ning¹， Yang Chun-shan²， Liu Jing-wei¹, He Na³

1.School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2. Faculty of Civil and Transportation，South China University of Technology，Guangzhou 510641,China;3. Guangdong Vocational School of Polytechnic, Guangzhou 510500, China

Received:2012-12-06 Online:2014-03-29 Published:2014-03-29

摘要/Abstract

摘要： 基坑开挖时关注的问题是土体侧向位移对邻近桥梁桩基的不利影响，桩土相互作用引起桩基产生附加应力和附加位移以及弯矩.结合具体工程实例，运用GTS软件建立基坑开挖三维数值模型，分析了基坑开挖时土与桩基的相互作用，包括基坑围护结构和桥梁桩基的变形与应力变化以及桩身的弯矩变化特性，同时进行了计算结果与实测比对.

关键词: 基坑开挖；桥梁；桩基；数值模拟

Abstract: The two central issues during the process of pit excavation are the adverse effects brought up by excavationinduced soil deformation on adjacent piers, and the additional stress, displacement and bend moment of pile foundation caused by the interaction between pile foundation and earth. With reference to engineering projects, the 3D FEM was established using GTS software. On the basis, the interaction between pit excavation and pile, including the displacement of pit supporting structure, surface subsidence and the pile bending moment changing characteristics, was analyzed. Besides, the calculation results were compared with the measuring results.

Key words: deep excavation; bridge; pile foundation; numerical analysis

张雅宁, 杨春山, 刘锦伟, 何娜. 基坑开挖对既有桥梁桩基的数值分析[J]. 广东工业大学学报, 2014, 31(1): 107-111.

ZHANG Ya-Ning, YANG Chun-Shan, LIU Jin-Wei, HE Na. Numerical Analysis of Responses of Existing Bridge Piers Induced by Deep Excavation[J]. Journal of Guangdong University of Technology, 2014, 31(1): 107-111.

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基坑开挖对既有桥梁桩基的数值分析

Numerical Analysis of Responses of Existing Bridge Piers Induced by Deep Excavation

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