| 轨道约束系统对高速铁路多跨简支梁桥地震反应的影响 |
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| 引用本文： | 张永亮,陈兴冲,李子奇.轨道约束系统对高速铁路多跨简支梁桥地震反应的影响[J].世界地震工程,2010,26(4). |
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| 作者姓名： | 张永亮 陈兴冲 李子奇 |
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| 作者单位： | 兰州交通大学土木工程学院,甘肃,兰州,730070 |
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| 基金项目： | 国家自然科学基金项目(51068017); 铁道部科技研究开发计划项目(2008G031-k) |
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| 摘 要： | 文中结合高速铁路多跨简支梁桥及轨道系统的特点,建立了考虑钢轨、轨道板以及桥梁结构的线桥一体化模型,采用反应谱法研究了轨道约束系统以及相邻后继结构对所选桥跨地震反应的影响。研究结果表明:轨道约束系统对相邻墩高相差较大的多跨简支梁桥的地震反应影响较大,因此对其地震反应分析时应采用线桥一体化模型;由于受端刺等路桥过渡段结构纵向刚度的影响,后继结构的桥梁跨数越少,对边墩地震反应的卸载作用越显著。
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| 关 键 词： | 轨道约束系统 高速铁路 桥梁 地震反应 |
Effects of rail system restraints on seismic response of multi-span simply supported girder bridge on high-speed railway |
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| ZHANG Yongliang,CHEN Xingchong,LI Ziqi.Effects of rail system restraints on seismic response of multi-span simply supported girder bridge on high-speed railway[J].World Information On Earthquake Engineering,2010,26(4). |
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| Authors: | ZHANG Yongliang CHEN Xingchong LI Ziqi |
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| Institution: | ZHANG Yongliang,CHEN Xingchong,LI Ziqi(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | Based on properties of multi-span simply supported girder bridges and rail system restraints in the high-speed railway,a rail-bridge model is established by considering rail,track slab and bridge structure.Elastic response spectra are adopted to research the influnce of rail system restraints and the succeeding-structure on seismic response for selected bridge spans.The results show that the effect of rail system restraints on seismic response for the multi-span simply supported girder bridge with relativel... |
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| Keywords: | rail system restraints high-speed railway bridge seismic response |
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