拱桥加固方案的模糊层次比较优选  

Selection and comparison of optimum strengthening scheme for arch bridges by using fuzzy analytic hierarchy method

作　　者：孙昊[1] 钱永久[1] 樊启武[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《四川建筑科学研究》2010年第2期106-110,共5页Sichuan Building Science

基　　金：高等学校优秀青年教师教学科研奖励计划(A0110719950102);四川省交通建设科技项目(2006A24-584)

摘　　要：拱桥加固方案的选择需要考虑的因素比较多,且大部分因素具有模糊性,合理科学地选择加固方案,是保证加固效果和质量的重要前提。以桥梁加固的基本目标——效果可靠、经济合理、技术可行、施工方便,作为评价加固方案的影响因素,利用模糊数学和层次分析法,分解评判指标体系,运用二级模糊综合评价决策方法,进行加固方案的优选比较。结合具体的拱桥加固实例,给出了模糊层次分析评价和加固方案优选的过程。结果证明,模糊层次分析法在拱桥加固方案的优化比选中是可行的。Many factors need to be considered during the choice of strengthening scheme for arch bridges,and most factors are fuzzy.The reasonable and scientific strengthening scheme is an important precondition to ensure the effectiveness and quality of the strengthening engineering.The elementary objects of the bridges strengthening are effect reliability,economic reasonability,technological feasibility,and convenience of construction,which are used to appraise the strengthening scheme.Based on the basic objective of bridges strengthening,two levels fuzzy comprehensive appraisal index system of strengthening scheme are established,and the best scheme is choosen.Combining the idiographic example of arch bridge reinforcement,the process of fuzzy analytic hierarchy and optimum result is given.The result tests that fuzzy analytic hierarchy method is feasible during the selection and comparison of optimum strengthening scheme for arch bridges.

关 键 词：拱桥 加固 模糊评判 层次分析 优选 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U449.7[交通运输工程—道路与铁道工程]