Influence of Tunneling on Adjacent Foundations Based on
Boundary Element Method

doi:10.3969/j.issn.1674-0696.2019.04.06

Journal of Chongqing Jiaotong University(Natural Science) ›› 2019, Vol. 38 ›› Issue (04): 35-40.DOI: 10.3969/j.issn.1674-0696.2019.04.06

• Bridge & Tunnel Engineering • Previous Articles Next Articles

Influence of Tunneling on Adjacent Foundations Based on Boundary Element Method

YANG Jianqun1, XU Dongfeng2, CAI Jian1, ZHOU Yang3

(1. Zhejiang Wenzhou Shenhai Expressway Co. Ltd., Wenzhou 325000, Zhejiang, P. R. China; 2. Wenzhou Transportation Planning and Design Institute, Wenzhou 325000, Zhejiang, P. R. China; 3. School of Rail Transportation, Soochow University, Suzhou 215000, Jiangsu, P. R. China)

Received:2017-08-28 Revised:2018-05-27 Online:2019-04-15 Published:2019-04-15

基于边界元法的隧道掘进对邻近基础影响研究

杨建群1，许东风2，蔡键1，周洋3

(1. 浙江温州沈海高速公路有限公司，浙江温州 325000； 2. 温州市交通规划设计研究院，浙江温州 325000; 3. 苏州大学轨道交通学院，江苏苏州 215000)

作者简介:杨建群(1972—)，男，浙江温州人，高级工程师，硕士，主要从事岩土工程方面的工作。E-mail：179303446@qq.com。通信作者：周洋(1994—)，男，江苏盐城人，硕士研究生，主要从事岩土和地下空间工程方面的研究。E-mail： 20164246021@stu.suda.edu.cn。
基金资助:
温州市科技计划项目(G20140039)

Abstract

Abstract: A boundary element method (BEM) was established to study the influence of tunnel excavation on adjacent pile foundations. Cylindrical element, annular tip element and annular discontinuous element were used to simulate piles in the process of BEM calculation. The behavior of pile-soil interaction was described by the deformation compatibility equation of pile-soil interface, the force balance equation of pile, the deformation compatibility equation of pile head and cap, and the force balance equation of pile head and cap. Aiming at the existing pile foundation project under a tunnel, the settlement of pile foundation caused by tunnel excavation was simulated, compared and analyzed by boundary element method and 3D finite element software Midas GTS. The influence of stratum loss rate on pile settlement was also studied. The research results can provide references for engineering design and protection of surrounding buildings during construction.

Key words: tunneling engineering, boundary element, finite element, pile settlement, pile-soil interaction

摘要： 建立边界元法研究隧道掘进施工对邻近桩基础的影响。边界元计算过程中使用圆柱单元、环形尖单元和环形不连续单元模拟桩。桩- 土相互作用行为通过桩-土交界面的变形协调方程、桩受力平衡方程、桩头和承台变形协调方程以及桩头和承台的受力平衡方程进行描述。针对某隧道下穿既有桩基础工程，采用边界元和3D有限元软件Midas GTS模拟，对比分析隧道掘进引起上方桩基础的沉降，并研究了地层损失率对桩沉降的影响。研究结果为工程设计以及施工过程中隧道周边建筑保护提供参考。

关键词: 隧道工程, 边界元法, 有限元, 桩沉降, 桩-土相互作用

CLC Number:

YANG Jianqun1, XU Dongfeng2, CAI Jian1, ZHOU Yang3. Influence of Tunneling on Adjacent Foundations Based on Boundary Element Method[J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(04): 35-40.

杨建群1，许东风2，蔡键1，周洋3. 基于边界元法的隧道掘进对邻近基础影响研究[J]. 重庆交通大学学报（自然科学版）, 2019, 38(04): 35-40.

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Influence of Tunneling on Adjacent Foundations Based on Boundary Element Method

基于边界元法的隧道掘进对邻近基础影响研究

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