基于曲率模态比值的城市公路桥梁损伤识别  

Study on damage identification of high way bridge based on curvature mode ratio theory

作　　者：林立香[1] 滕海文[1] 霍达[1] 李秀芬[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《河南科学》2005年第6期896-899,共4页Henan Science

基　　金：北京市自然科学基金项目(8031001)

摘　　要：损伤识别是大型桥梁综合监测系统的重要任务之一.本文从基于曲率模态的城市公路桥梁损伤识别方法入手,从理论上研究了曲率模态损伤指标,并用ANSYS软件对一钢筋混凝土单跨简支梁进行了数值仿真分析,指出曲率模态在应用于损伤识别时的特性,并在此基础上提出曲率模态比值,通过数值模拟分析看到它是一种良好的损伤指标,具有很好的发展前景.Damage identification is one of the important tasks of comprehensive monitoring system ot large-scale bridge. This text is started with urban highway bridge Damage identification on the basis of the curvature mode method, then study curvature mode damage index theoretically and go on numerical simulation analysis for a single span reinforced concrete simple bridge with ANSYS software, Point out the characteristic of curvature mode when it is applied to damage identification, and propose curvature mode ratio on this basis, through the numerical simulation we can know that it is a kind of good damage index and have very good development prospects.

关 键 词：损伤识别 损伤指标 曲率模态比值 

分 类 号：TU375[建筑科学—结构工程]