强震区含空洞高速铁路隧道刚柔相济减震效果研究  

Research on aseismic effect of combined rigid-flexible approaches in high-speed railway tunnels with cavities in strong seismic areas

作　　者：麻建飞 江波 陈征 贺少辉[1] MA Jianfei;JIANG Bo;CHEN Zheng;HE Shaohui(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081 [3]重庆大学资源与安全学院,重庆400044

出　　处：《中国安全生产科学技术》2024年第10期168-174,共7页Journal of Safety Science and Technology

基　　金：中央高校基本科研业务费专项资金资助项目(2024YJS043)。

摘　　要：为提高强震区含空洞铁路隧道衬砌的安全性,采用检查车对19座高铁隧道背后空洞进行测试,借助数值模拟研究刚柔相济措施在强震区含空洞隧道的应用效果。研究结果表明:高铁隧道素混凝土区段空洞最易出现在拱顶,频率为0.82;含空洞高铁隧道采用柔性减震措施时,安全系数提高34.49%~39.36%;采用刚性抗震措施时,安全系数提高20.34%~32.66%;采用刚柔相济措施时,安全系数提高35.65%~51.15%;综合位移、地震动峰值加速度、结构内力,刚柔相济措施在强震区含空洞高铁隧道的应用效果最优。研究结果可为强震区含病害高铁隧道抗震设防提供参考。To enhance the safety of railway tunnel lining with cavities in the strong seismic areas,the cavities behind 19 high-speed railway tunnels were tested by inspection vehicles,and the application effect of combined rigid-flexible approaches in the tunnels with cavities in the strong seismic areas was studied through numerical simulation.The results show that the cavities are most likely to occur at the vault in the plain concrete section of high-speed railway tunnel,with a frequency of 0.82.When the flexible damping measures are applied to the high-speed railway tunnels with cavities,the safety coefficient increases by 34.49%to 39.36%.When the rigid aseismic measures are applied,the safety coefficient increases by 20.34%to 32.66%.When the combined rigid-flexible approaches are applied,the safety coefficient increases by 35.65%to 51.15%.Comprehensively considering the displacement,peak ground acceleration of seismic motion,and internal forces of structure,the application of combined rigid-flexible approaches presents the optimal application effect in the high-speed railway tunnels with cavities in the strong seismic areas.The research results can provide reference for the seismic fortification of high-speed railway tunnels with defects in the strong seismic areas.

关 键 词：隧道工程 高铁 衬砌空洞 减震效果 刚柔相济 

分 类 号：X951[环境科学与工程—安全科学]