Three-dimensional finite element analysis on effects of tunnel construction on nearby pile foundation

作     者：杨敏 孙庆 李卫超 马亢 

作者机构：Key Laboratory of Geotechnical and Underground Engineering of Ministry of EducationTongji University Department of Geotechnical EngineeringTongji University School of ArchitectureLandscape and Civil EngineeringUniversity College Dublin Department of Civil EngineeringXia men University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2011年第18卷第3期

页      面：909-916页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：finite element analysis tunnelling pile foundation three-dimensional simulation displacement controlled model 

摘      要：A three-dimensional finite element simulation was carried out to investigate the effects of tunnel construction on nearby pile *** displacement controlled model (DCM) was used to simulate the tunneling-induced volume loss *** numerical model was verified based on the results of a centrifuge test and a set of parametric studies was implemented based on this *** is good agreement between the trend of the results of the centrifuge test and the present *** results of parametric studies show that the tunnelling-induced pile internal force and deformation depend mainly on the pile?tunnel distance,the pile length to tunnel depth ratio and the volume *** different zones are separated by a 45° line projected from the tunnel *** the zone of influence,the pile is subjected to tensile force and large settlement;whereas outside the zone of influence,dragload and small settlement are *** is also established that the impact of tunnelling on a pile group is substantially smaller as compared with a single pile in the same location with the rear pile in a group,demonstrating a positive pile group effect.