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基于群索索力相异测度的斜拉桥健康状态评估
引用本文:淡丹辉,赵一鸣,杨通,闫兴非.基于群索索力相异测度的斜拉桥健康状态评估[J].同济大学学报(自然科学版),2013,41(6):826-833.
作者姓名:淡丹辉  赵一鸣  杨通  闫兴非
作者单位:1. 同济大学土木工程学院,上海,200092
2. 上海城市建设设计研究总院,上海,200125
基金项目:国家自然科学基金,科技部国家重点实验室基础研究项目,中央高校基本科研业务费专项资金
摘    要:基于群索索力的相异测度,提出一套可用于斜拉索索缆承重体系内力状态评估的指标体系.利用桥梁的有限元分析及影响矩阵法,定义了基于极限状态的相异测度指标阈值,并通过蒙特卡罗方法获得这套指标阈值的合理取值.通过该套指标与其阈值体系的比较,建立了斜拉桥整体内力状态的评判方法.利用国内某斜拉桥建成后十年内的斜拉索索力实测资料,用上述方法对该桥进行了健康评估,结果表明了该方法的有效性.

关 键 词:群索索力  状态评估  相异测度  蒙特卡罗方法  影响矩阵法
收稿时间:6/7/2012 12:00:00 AM
修稿时间:3/6/2013 12:00:00 AM

Health Status Evaluation of Cable Stayed Bridge Driven By Dissimilarity Measures of Grouped Cable Forces
dandanhui,Zhao Yi Ming,Yang Tong and Yan Xing Fei.Health Status Evaluation of Cable Stayed Bridge Driven By Dissimilarity Measures of Grouped Cable Forces[J].Journal of Tongji University(Natural Science),2013,41(6):826-833.
Authors:dandanhui  Zhao Yi Ming  Yang Tong and Yan Xing Fei
Institution:1.College of Civil Engineering,Tongji University,Shanghai 200092,China;2.Shanghai Urban Construction Design Research Institute,Shanghai 200125,China)
Abstract:An index system for evaluating the health status of a cable stayed bridge is presented based on a set of dissimilarity measures (DM) of the cable force of grouped cables. The thresholds of DM derived from the serviceability limit state and ultimate limit state of the bridge are defined by finite element method(FEM) and influence matrixes method. The Monte Carlo method is used to obtain the rational values of these thresholds. By comparing these indices with their thresholds, the discrimination on holistic health status of the cable stayed bridge can be done easily and explicably. A case study is conducted on a cable stayed bridge in China on the basis of its 8 year historical data. Study results prove the method to be feasible.
Keywords:grouped cable forces  health status evaluation  dissimilarity measures  Monte Carlo methods  influence matrix methods
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