摘要
以某公铁两用斜拉桥为研究对象 ,借助空间杆系有限元方法 ,用等效格子梁来模拟公路与铁路正交异性板钢桥面 ,建立了公铁两用斜拉桥的动力分析模型 ;分别用自编的桥梁动力分析程序BDAP及通用软件SAP93计算了该斜拉桥的空间自振特性 ,两者取得较好的一致。最后 ,采用所建立的桥梁动力分析模型 ,对其在高速ICE列车作用下的车桥空间耦合振动进行了计算与分析。
By use of the finite element method (FEM) with 3D members,the dynamic analysis moder of long span highway and railway bi_purpose cable_stayed bridge is established,in which,the steel orthotropic deck under highway and railway traffic are both simulated by equivalent gird beam model.The natural vibration properties of the bridge are analyzed using dynamic analysis program BDAP and general ware SAP93 respectively,with well agreed results.Then,the coupling vibration responses of vehicle_bridge system under a moving high_speed ICE train are calculated in details.Numerical results are shown in the figures and the validity and the effectiveness of the proposed model are verified.Finally,the vertical and transversal stiffnesses of the bridge are evaluated.
出处
《振动与冲击》
EI
CSCD
北大核心
2003年第1期6-9,19,共5页
Journal of Vibration and Shock
基金
铁道部科技发展计划项目 (2 0 0 1G0 2 2 -A)资助
关键词
斜拉桥
车桥动力分析
大跨度桥梁
公路
铁路
两用桥
highway and railway bi_purpose bridge,steel orthotropic deck,vehicle_bridge dynamic analysis,high_speed train
