基于瞬态动力分析的装配式板桥铰缝损伤识别  

Damage Identification of Hinged Joints of Prefabricated Slab Bridges Based on Transient Dynamics Analysis

作　　者：邹毅松[1] 袁波波[1] 王银辉[2] 陈闯[3] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]浙江大学宁波理工学院,浙江宁波315100 [3]哈尔滨工业大学,黑龙江哈尔滨150090

出　　处：《重庆交通大学学报（自然科学版）》2011年第1期1-3,43,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：宁波市2008年交通科技计划项目(200805)

摘　　要：根据铰缝在装配式板桥传递荷载的作用,通过数值计算方法模拟了装配式板桥在铰缝损伤后的瞬态动力学响应,比较分析了不同损伤程度、不同动荷载加载位置下各板跨中加速度幅值,提出利用多次冲击实验下各板加速度幅值比之差值作为铰缝损伤的评定依据的识别方法,并分析了这种方法的可行性。Hinged joint is the essential component of prefabricated slab bridge which transfers load from one slab to other slabs.Based on this role,many transient dynamic analyses about prefabricated slab bridge models with several extent damaged of hinged joint and different position of dynamic load are simulated by FEM method numerically.The transient acceleration amplitudes of every slab are analyzed and compared.It is suggested that the difference values of acceleration amplitude ratios of several impact tests could be used to identify the damage extent and position of hinged joint.The feasibility and practicability of this method is demonstrated.

关 键 词：装配式板桥 铰缝 瞬态动力学 损伤识别 

分 类 号：U446[建筑科学—桥梁与隧道工程]