下穿高速铁路地铁列车振动对高速铁路的影响分析  

Analysis of the Impact of Vibrations from Metro Trains Passing Under High-speed Railways

作　　者：崔光耀[1] 何子阳 王明胜 许崇庆 CUI Guangyao;HE Ziyang;WANG Mingsheng;XU Chongqing(North China University of Technology,Beijing 100144,China;China Railway City Development and Investment Group Co.,Ltd.,Chengdu 610000,China)

机构地区：[1]北方工业大学,北京100144 [2]中铁城市发展投资集团有限公司,成都610000

出　　处：《高速铁路技术》2023年第5期88-92,共5页High Speed Railway Technology

基　　金：北京市大学生科学研究与创业行动计划项目(23XN262-187)。

摘　　要：依托北京地铁19号线草桥站—右安门外站区间下穿京沪高速铁路工程,借助FLAC3D软件研究了地铁运营振动对上跨高速铁路线路及相关设施位移的影响,结果表明:(1)在该工程影响范围内的8处硬横跨接触网杆,支柱横线路面偏差最大为0.016°,支柱倾斜率最大为0.028‰,接触网立柱沉降最大值为1.9 mm,差异沉降最大值为0.3 mm;(2)对于6处悬挑式接触网杆、2处矩形横腹板柱、1处信号灯及1处电线杆,支柱横线路面偏差最大为0.010°,支柱倾斜率最大为0.018‰,接触网立柱沉降最大值为2.1 mm;(3)上跨高速铁路线路最大沉降为1.61 mm;(4)上跨高速铁路线路及相关设施位移均小于控制标准。研究结果可为类似下穿工程提供参考。The study investigated the impact of vibrations from metro train operation on the displacements of the above-laid high-speed railway tracks and related facilities by using FLAC3D based on a case study of the Beijing Subway Line 19,which passes under the Beijing-Shanghai High-speed Railway between Caoqiao Station and You’anmenwai Station.The results showed the following:(1)Within the affected area of the Caoqiao-You’anmenwai section,the maximum horizontal deviation of 8 rigid cross-contact wire poles was 0.016°,the maximum inclination of the supporting pillar was 0.028‰,the maximum settlement of the contact wire column was 1.9 mm,and the maximum differential settlement was 0.3 mm.(2)For 6 cantilevered contact wire poles,2 rectangular transverse lateral brace columns,1 signal light,and 1 power pole,the maximum horizontal deviation of the supporting pillar was 0.010°,the maximum inclination was 0.018‰,and the maximum settlement of the contact wire column was 2.1 mm.(3)The maximum settlement of the above-laid high-speed railway tracks was 1.61 mm.(4)The displacements of the above-laid high-speed railway tracks and related facilities were all within control standards.The research findings may provide a reference for similar underpass construction projects.

关 键 词：高速铁路 地铁隧道 下穿 列车振动 位移响应 

分 类 号：U213.1[交通运输工程—道路与铁道工程]