高速列车振动荷载作用下电缆隧道结构动力响应分析  

Dynamic response analysis of cable tunnel structure under vibratory load induced by high-speed train

作　　者：曲村[1] 高亮[1] 辛涛[1] 徐亮[2] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京市市政工程设计研究总院,北京100045

出　　处：《振动与冲击》2011年第3期264-268,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(50878018);铁道部科技研究开发计划项目(2008G031-I)

摘　　要：城市中地下管线铺设较为复杂,城市轨道或者城际高速铁路会修建在地下管线上方。以京津城际轨道交通工程为例,研究高速车辆振动荷载对铺设地下管线的隧道结构产生的动力影响。运用耦合动力学,建立了车辆-轨道耦合系统振动分析模型,计算高速列车通过时车辆-轨道耦合系统的动力响应。结合有限元理论,建立桩板-土体-隧道一体化纵横垂向空间耦合动力仿真模型。将车辆-轨道耦合系统振动分析模型得到的荷载谱,作为外部激励作用在动力仿真模型上,对电缆隧道的动力响应进行研究。计算结果表明,京津城际铁路运营后高速列车振动荷载的动力作用不会对桩板结构下的电缆隧道产生显著的不利影响。Beijing-Tianjin high-speed railway was regarded as an example to research the dynamic influence of the vibratory load induced by high-speed train on the underground tunnel and cable.Using coupling dynamics,the vibration analysis model of vehicle-track coupling system was built,and the dynamic response of vehicle-track coupling system caused by high-speed train was calculated.On the basis of finite element theory,the longitudinal-transverse-vertical spatial coupled dynamic simulation model of the pile-slab-soil-tunnel was built.The load spectrum,which was obtained by using the vibration analysis model of vehicle-track coupling system,was used as external excitation acting on the dynamic simulation model,and the dynamic response of cable tunnel was investigated.The results show that cable tunnel under pile-slab structure will not be influenced unfavorably by dynamic action of vibratory load induced by high-speed train under the operation of Beijing-Tianjin high-speed railway.

关 键 词：高速铁路 振动荷载 电缆隧道 动力响应 

分 类 号：U211.3[交通运输工程—道路与铁道工程]