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基于改进直接刚度法的加州某桥梁结构损伤评估研究

RESEARCH ON DAMAGE EVALUATION OF HIGHWAY BRIDGE STRUCTURE IN CALIFORNIA USING IMPROVED DIRECT STIFFNESS METHOD

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【Author】 YANG Yang1,2,Khalid M Mosalam3,JIN Guo-fang1,LIU He4(1.Research Institute of Structural Engineering and Disaster Reduction in College of Civil Engineering,Tongji University,Shanghai 200092,China; 2.Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University),Ministry of Education,Chongqing 400030,China; 3.Department of Civil and Environmental Engineering,University of California,Berkeley,CA 94720-1710,USA; 4.University of Alaska Anchorage,3211 Providence Dr.,Anchorage,AK 99508,USA)

【机构】同济大学土木工程学院结构工程与防灾研究所；山地城镇建设与新技术教育部重点实验室(重庆大学)；加州大学伯克利分校土木与环境工程系；阿拉斯加大学安克雷奇分校；

【摘要】利用OpenSees有限元软件对美国加州地区的Truckee-I80/Truckee River Bridge(TRB)桥梁结构进行了数值模拟。然后应用改进的直接刚度法对该模型进行了有无测量误差下的单处、多处损伤评估;同时对该桥进行了相应的推覆分析以及地震动输入下的非线性损伤评估。评估结果表明:改进的直接刚度法对以弯曲变形为主的桥梁结构的损伤评估是有效和可行的。更多还原

【Abstract】 The numerical simulations for the Truckee-I80/Truckee River Bridge Structure,California in USA,were conducted in different damage scenarios in platform of OpenSees.In this study,the damage status of the model was evaluated by using the improved direct stiffness method with consideration of single and multiple damaged locations under measurement errors or not,push-over analysis,and seismic damage evaluation.The results show that the improved direct stiffness method is valid and efficient for damage detection in bending-type bridge structures.更多还原

【关键词】 OpenSees；桥梁结构；数值模拟；测量误差；推覆分析；地震损伤评估；
【Key words】 OpenSees； bridge structure； numerical simulation； measurement error； push-over analysis； seismic damage evaluation；

【基金】国家自然科学基金项目(51178486)

【文献出处】工程力学 ,Engineering Mechanics , 编辑部邮箱 ,2012年01期

【分类号】U441.4
【被引频次】6
【下载频次】250

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