| 大跨度公铁两用斜拉桥车桥动力分析 |
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| 引用本文： | 李小珍,强士中.大跨度公铁两用斜拉桥车桥动力分析[J].振动与冲击,2003,22(1):6-9,19. |
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| 作者姓名： | 李小珍 强士中 |
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| 作者单位： | 西南交通大学土木工程学院,成都,610031 |
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| 基金项目： | 铁道部科技发展计划项目 (2 0 0 1G0 2 2 -A)资助 |
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| 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。
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| 关 键 词： | 斜拉桥 车桥动力分析 大跨度桥梁 公路 铁路 两用桥 |
Vehicle-bridge Dynamic Analysis for Long Span Highway and Railway Bi-purpose Cable-stayed Bridge |
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| Li Xiaozhen,Qiang Shizhong.Vehicle-bridge Dynamic Analysis for Long Span Highway and Railway Bi-purpose Cable-stayed Bridge[J].Journal of Vibration and Shock,2003,22(1):6-9,19. |
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| Authors: | Li Xiaozhen Qiang Shizhong |
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| Abstract: | 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. |
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| Keywords: | highway and railway bi_purpose bridge steel orthotropic deck vehicle_bridge dynamic analysis high_speed train |
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