衬砌厚度对隧道侧穿桥桩体系地震响应的影响研究  

Effect of lining thickness on the seismic response of tunnel side-crossing bridge pile system

作　　者：许洪春[1] 张亚楠 徐红[3] 白晓晓 XU Hongchun;ZHANG Ya'nan;XU Hong;BAI Xiaoxiao(Zhengzhou University of Aeronautics,Zhengzhou 450046,Henan,China;Liaoning Technical University,Fuxin 123000,Liaoning,China;Beijing University of Technology,Beijing 100124,China)

机构地区：[1]郑州航空工业管理学院,河南郑州450046 [2]辽宁工程技术大学,辽宁阜新12300 [3]北京工业大学,北京100124

出　　处：《地震工程学报》2025年第3期529-541,共13页China Earthquake Engineering Journal

基　　金：河南省高校青年骨干教师培养计划(2021GGJS116)。

摘　　要：为探究隧道侧穿桥桩体系受衬砌厚度因素的影响,依托大连某实际工程,通过振动台试验与数值模拟相结合的方法,探究衬砌厚度对隧道侧穿桥桩体系地震响应的影响规律。从结构的加速度峰值和内力(剪力、轴力和弯矩)峰值及其变化率系数等参数指标展开分析,结果表明:衬砌厚度对土地表加速度响应的影响主要在距离水平中心位置约70 m的范围内;改变衬砌厚度隧道断面上部和下部的加速度响应规律是相反的,隧道断面上部的加速度峰值会随衬砌厚度的增加而减小,断面下部反之;提高衬砌厚度,体系中隧道的内力峰值会增大,剪力和弯矩的最大变化率分别为9.51%、19.56%,而桥桩的剪力、轴力和弯矩峰值则减小,其中弯矩变化率最大为22.46%。To investigate the influence of lining thickness on the tunnel side-crossing bridge pile system,this study takes an actual project in Dalian,Liaoning Province,as a case study.Then,using the combination of shaking table test and numerical simulation,this work investigates the influence of lining thickness on the seismic response of the tunnel side-crossing bridge pile system.The peak values of the structure's acceleration and internal forces(shear force,axial force,and bending moment),along with their change rate coefficients,were analyzed.The results show that the influence of lining thickness on the acceleration response of the ground surface is mainly in the range of approximately 70 m from the horizontal center.With the increase in lining thickness,the peak acceleration of the tunnel's upper section decreases,while that of the lower section increases,thus indicating an opposite acceleration response law.With the increase in the lining thickness,the peak internal force of the tunnel in the system rises,with maximum change rates of shear force and bending moment at 9.51%and 19.56%,respectively.At the same time,the peak shear force,axial force,and bending moment of the bridge pile decrease,with the maximum change rate of bending moment being 22.46%.

关 键 词：隧道侧穿桥桩体系 衬砌厚度 地震响应 数值模拟 

分 类 号：TU921[建筑科学—建筑设计及理论]