大跨度钢拱桥构件评级体系研究

发布时间：2018-05-04 18:24

本文选题：钢拱桥 + 构件评级　；参考：《桥梁建设》2017年04期

【摘要】：为对大跨度钢拱桥构件制定合理的检查和养护策略,根据该类桥梁的特点开展构件评级体系研究。从安全性和耐久性2个角度对构件进行评级,构建多个安全性和耐久性因子,对安全性和耐久性因子的分析结果设置一个评分标准,采用层次分析法确定各因子的权重,计算构件的安全性和耐久性综合得分,据此建立构件评级矩阵,并制定适当的桥梁构件检查和养护策略。采用该构件评级体系对广州新光大桥进行构件评级,结果显示,该桥主跨桥面横梁的安全性等级偏低,边、主跨吊杆的耐久性等级也偏低,在制定检查周期和养护策略时,应重点关注这几类构件。
[Abstract]:In order to establish a reasonable inspection and maintenance strategy for long-span steel arch bridge members, the component rating system is studied according to the characteristics of this kind of bridges. According to the two aspects of safety and durability, the members are rated, and several safety and durability factors are constructed. The analysis results of the safety and durability factors are evaluated by a scoring standard, and the weight of each factor is determined by the analytic hierarchy process (AHP). The comprehensive scores of safety and durability of the components are calculated, according to which the component rating matrix is established, and appropriate inspection and maintenance strategies for bridge members are formulated. The result shows that the safety grade of the bridge deck crossbeam is on the low side, and the durability grade of the main span suspension rod is also low. When the inspection period and maintenance strategy are formulated, the system is used to grade the components of the bridge, and the result shows that the safety grade of the bridge deck beam is low, and the durability grade of the main span suspension rod is also low. Attention should be paid to these types of components.
【作者单位】：华南理工大学土木与交通学院;华南理工大学亚热带建筑科学国家重点实验室;
【基金】：国家自然科学基金项目(51678252) 华南理工大学亚热带建筑科学国家重点实验室基金项目(2013ZA01)~~
【分类号】：U448.22

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