| 三塔悬索桥静力挠度可靠度分析 |
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| 引用本文： | 刘晓銮.三塔悬索桥静力挠度可靠度分析[J].重庆交通大学学报(自然科学版),2011,30(5):895-898,942. |
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| 作者姓名： | 刘晓銮 |
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| 作者单位： | 同济大学桥梁工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目(51008223); 上海市浦江人才计划项目(09PJ1409500) |
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| 摘 要： | 采用响应面法对三塔悬索桥主梁最大挠度进行静力可靠度分析,考察三塔悬索桥主梁最大挠度对结构材料、几何尺寸及外荷载等不确定因素的变异而发生变化的规律.结果表明:三塔悬索桥主梁最大挠度可靠指标是由单主跨施加活荷载控制的,主缆弹性模量、汽车活荷载、主缆截面面积及中塔弹性模量等对主梁最大挠度的影响最为显著.
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| 关 键 词： | 悬索桥 挠度 静力可靠度 失效概率 响应面法 |
Static Deflection Reliability Analysis of Three-Tower Suspension Bridge |
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| LIU Xiao-luan.Static Deflection Reliability Analysis of Three-Tower Suspension Bridge[J].Journal of Chongqing Jiaotong University,2011,30(5):895-898,942. |
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| Authors: | LIU Xiao-luan |
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| Institution: | LIU Xiao-luan(Department of Bridge Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | Static reliability analysis was carried out for the maximum deflection of main girder of three-tower suspension bridge by response surface method(RSM).The law of main girder's deflection was studied with the variation of structural parameters such as material properties,geometric dimensions and external load,etc.The results demonstrate that the static deflection reliability was controlled by the load case when the live load was uniformly distributed on one central span girder.It was concluded that the varia... |
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| Keywords: | suspension bridge deflection static reliability failure probability response surface method |
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