中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (5): 895-898.DOI: 10.3969/j.issn.1674-0696.2011.05.002

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三塔悬索桥静力挠度可靠度分析

刘晓銮   

  1. 同济大学桥梁工程系,上海20009
  • 修回日期:2011-04-25 出版日期:2011-10-15 发布日期:2015-01-22
  • 通讯作者: 20/05/2011
  • 作者简介:刘晓銮(1982—),男,山东寿光人,博士研究生,主要从事桥梁结构系统可靠度研究。E-mail:lxluan292@163.coin。
  • 基金资助:
    国家自然科学基金资助项目(51008223);上海市浦江人才计划项目(o9PJ14O95OO)

Static Deflection Reliability Analysis of Three·Tower Suspension Bridge

LIU xiao—luan   

  1. Department of Bridge Engineering,Tongii University,Shanghai 200092,China
  • Revised:2011-04-25 Online:2011-10-15 Published:2015-01-22

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。

关键词: 悬索桥, 挠度, 静力可靠度, 失效概率, 响应面法

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 variation of modulus of the main cable,the live load,the area of the main cable and the modulus of the central tower had significant effect on the deflection of main girder of three·tower suspension bridge.

Key words: suspension bridge, deflection, static reliab ility, failure probability, response Sllrface method

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