交通运输工程学报
JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING
2005 Vol.5 No.4 P.58-62


缺损钢筋混凝土梁桥模糊可靠性评价模型

吕颖钊  贺拴海 

摘 要:结合模糊评价理论、层次分析法以及概率可靠度方法,建立了钢筋混凝土梁桥缺损状况模糊可靠性评价模型.通过建立模糊评价集,确定项目层、指标层模糊评价因素集和模糊评价因素权重集,构造概率型判断矩阵,经加权平均值法计算,得到梁桥缺损状况模糊评判得分,以目标可靠指标和最低可靠指标为界,将模糊评判得分转换为模糊可靠指标,实现在役梁桥缺损状况的模糊可靠性评价.采用该方法对一座使用25年的多跨简支钢筋混凝土梁桥进行评价,得到模糊可靠指标为3.769,满足最低可靠指标要求,与桥梁实际状况相符,表明该方法可行.
关键词:桥梁工程;缺损状况;模糊评价;可靠度;模糊可靠指标
分类号:U441  文献标识码:A

文章编号:1671-1637(2005)04-0058-05

Fuzzy reliability evaluation of defective RC beam bridge

Lu Ying-zhao  He Shuan-hai 

基金项目:陕西省交通科技项目(03-08K)
作者简介:吕颖钊(1978-),男,浙江湖州人,长安大学博士研究生,从事在役桥梁可靠度研究.doctoral student, 86-29-82334837, lyz117@126.com.
作者单位:吕颖钊(长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064) 
     贺拴海(长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064) 

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收稿日期:2005年7月25日

出版日期:2005年12月31日

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