Mechanical responses of underground carriageway structures due to construction of metro tunnels beneath the existing structure:A case study

作     者：Xin Han Fei Ye Xingbo Han Chao Ren Jing Song Ruliang Zhao Xin Han;Fei Ye;Xingbo Han;Chao Ren;Jing Song;Ruliang Zhao

作者机构：School of HighwayChang'an UniversityXi'anChina Shandong Province Transportation Planning and Design InstituteJinanChina China Water Resources Beifang InvestigationDesign and Research Co.Ltd.TianjinChina 

出 版 物：《Deep Underground Science and Engineering》 (深地科学（英文）)

年 卷 期：2024年第3卷第2期

页      面：231-246页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 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] 

基　　金：National Natural Science Foundation of China Grant/Award Numbers:51878060 52078046 

主　　题：metro tunnel numerical simulation structural deformation surface subsidence underground carriageway structure 

摘      要：To understand the mechanical response pattern of the existing structure and ground due to the construction of metro tunnels underneath,the finite difference method is adopted to study the torsional deformation and stress variation of the existing structure and the effect of underground carriageway structures on the surface *** curves of the maximum differential subsidence,torsion angle,and distortion of the cross-section of the existing structure show two peaks in succession during traversing of two metro tunnels beneath *** torsion angle of the existing structure changes when the two tunnels traverse beneath it in opposite *** first traversing of the shield tunnel mainly induces the magnitude variation in torsional deformation of the existing structure,but the second traversing of the subsurface tunnel may cause a dynamic change in the magnitude and form of torsional deformation in the existing *** shielding effect can reduce the surface subsidence caused by metro tunnel excavation to a certain extent,and the development trend of subsidence becomes slower as the excavation continues.