基于曲率模态的箱梁损伤识别方法研究  

Damage Identification of Box Beam Based on Curvature Theory Method

作　　者：张旭[1,2] 葛继平[2] 李胡生[2] 严平 

机构地区：[1]上海理工大学环境与建筑学院,上海200093 [2]上海应用技术学院城市建设与安全工程学院,上海201418 [3]中建国际(深圳)设计顾问有限公司,上海200233

出　　处：《上海应用技术学院学报（自然科学版）》2012年第3期201-206,共6页Journal of Shanghai Institute of Technology: Natural Science

基　　金：铁道部科技研究开发计划项目(2010G007-J)

摘　　要：随着我国高速铁路的快速发展,针对高速铁路中桥梁的损伤识别研究已成为热门领域。通过曲率模态理论对实体单元建立的混凝土箱梁有限元模型进行损伤识别可行性研究,分析不同损伤位置、损伤程度和测点位置条件下损伤指标的变化。结果表明,结合曲率模态理论方法和实体单元建模方法可以更加全面准确地对损伤结构进行识别,为今后高速铁路桥梁检测提供参考。With the rapid development of the high-speed railway, the damage identification study of high-speed railway bridges has become a hot research topic. In this paper, the feasibility study is made on damage identification of the finite element model of the reinforced concrete box girder using solid elements by curvature model theory. An analysis is made of the variation of damage factors with the changes in damage locations, damage degrees and the positions of measuring points. The results show that structure damage can be identified more accurately and comprehensively with the application of curvature model theory with solid elements. It provides a reference for the detection of high-speed railway bridges in the future.

关 键 词：钢筋混凝土箱梁 动力特性 有限元方法 实体单元 测点布置 

分 类 号：U448.213[建筑科学—桥梁与隧道工程] U441.4[交通运输工程—道路与铁道工程]