摘要
为了研究隧道垂直下穿车站结构地震响应问题,设计制作了粉质黏土场地中小净距隧道垂直下穿单层车站模型。利用振动台试验结果验证后的数值模型,通过输入不同峰值加速度的地震波,研究地下穿越结构的应力、位移、变形及加速度响应规律。研究结果表明:横向地震作用下,隧道非对称穿越车站会影响车站的地震响应特征,应力、加速度、变形的最大值偏离中柱位置;车站、隧道的内侧应力约为外侧应力的70~80%;车站中柱依然是抗震薄弱部位。
In order to study the seismic response of the tunnel vertical underneath station structure,a model of the small-interval tunnel vertical underneath signal-storey station in the silty clay was designed and manufactured.Using the numerical model verified by the shaking table test results,the stress,displacement,deformation and acceleration response laws of the underground crossing structure were studied by inputting seismic waves with different peak accelerations.The research results show that under the action of lateral earthquake,the asymmetrical tunnel crossing the station will affect the seismic response characteristics of the station,and the maximum values of stress,acceleration and deformation will deviate from the position of the center column;the inner stress of the station and tunnel is about 70%~80%of the outer;the center column of the station is still weak in earthquake resistance.
作者
李雨润
王杰锋
张浩亮
LI Yurun;WANG Jiefeng;ZHANG Haoiang(College of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Civil Engineering Technology Research Center of Hebei Province,Tianjin 300401,China;China Railway Design Corporation,Tianjin 300142,China)
出处
《建筑结构》
北大核心
2024年第5期64-71,共8页
Building Structure
基金
国家自然科学基金项目(51778207、52278340)
河北省自然科学基金项目(E2023202028)。
关键词
隧道下穿车站
地震响应
静-动力耦合边界
小净距隧道
振动台试验
tunnel underneath the station
seismic response
static and dynamic coupling boundary
small-interval tunnel
