| 行波效应下连续粱桥随结构参数的响应分析 |
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| 引用本文： | 刘军.行波效应下连续粱桥随结构参数的响应分析[J].北方交通,2010(4):97-100. |
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| 作者姓名： | 刘军 |
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| 作者单位： | 辽宁省交通工程质量与安全监督局,沈阳,110005 |
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| 摘 要： | 利用桥梁专用分析软件MIDAS/Civil建立大跨度连续梁桥多点激励数值模拟模型,采用国际上常用的Elcentro波作为加速度时程输入,在考虑行波效应和桩-土-结构相互作用的情况下,利用时程分析法求得结构在主跨跨径、固定墩纵向抗推刚度和边中跨比等结构参数下的响应峰值。通过数值分析比较,表明增大主跨跨径对结构抗震不利,减小固定墩纵向抗推刚度对结构抗震有利,边中跨比对结构抗震利弊兼半。综合分析各种结构参数,主跨跨径对结构抗震最为敏感。
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| 关 键 词： | 行波效应 连续梁桥 结构参数 时程分析 |
Seismic Response Analysis to Continuous Bridge under Different Structural Parameters |
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| Authors: | LIU Jun |
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| Abstract: | Numerical simulation model of long span continuous bridge under multi-support excitations has been built with the special analysis software for bridge-MIDAS/Civil.The commonly used El centro wave is put into the model as an acceleration time interval.The peak response under different structural parameters,such as under vertical anti-push rigidity of fix girder,middle and main span,structural parameters of side and middle span and etc.are calculated with time interval analysis method.Through the numerical an... |
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| Keywords: | Seismic response Continuous bridge Structural parameter Interval time analysis |
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