应用曲率模态理论识别实桥模型损伤的研究  

STUDY OF REAL BRIDGE MODEL DAMAGE DETECTION BASED ON CURVATURE MODE THEORY

作　　者：陆熙[1] 霍达[1] 

机构地区：[1]北京工业大学,北京100022

出　　处：《土木工程学报》2005年第8期61-66,79,共7页China Civil Engineering Journal

基　　金：北京市自然科学基金项目(8031001)

摘　　要：在曲率模态理论基础上,针对目前损伤研究一般采用的简单等直梁或杆件等简化模型与实际桥梁差别较大的情况,参照实际城市道路桥梁建立有限元损伤模型,通过计算研究了大型桥梁损伤的结构响应特点,验证了曲率模态对大型结构整体损伤、局部损伤都有较好的敏感性,可为实际公路桥梁损伤的测量和识别提供参考。Based on curvature mode theory used in damage detection, a finite element model referred to Beijing city Highway Bridge is built in this paper to be studied as a substitution for the simple beam model used in damage detection research of bridge generally, which is greatly different to the real bridge. Then, the responses of damaged highway bridge are studied, and it is proved that curvature mode is a satisfactory index in damage detection no whether for whole bridge structure or for part of it. Some useful conclusions for city Highway Bridge are drawn in this paper and can serve as references for real bridge damage measure and detection.

关 键 词：曲率模态 公路桥梁 损伤 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]