基于应变模态的简支梁桥损伤位置识别研究  

Study on Damage Location Identification for Simply Supported Bridge based on Strain Mode

作　　者：孙平义 

机构地区：[1]吉林省公路重点工程建设管理办公室,吉林长春130021

出　　处：《工程与试验》2013年第3期18-21,72,共5页Engineering and Test

摘　　要：本文以简支梁桥为研究对象,利用ANSYS软件对其进行损伤模拟。获取了简支梁在两种工况下,不同损伤程度的1-3阶应变模态及应变模态差曲线。对比相应的位移模态曲线,发现应变模态和应变模态差指标,对于损伤位置的识别是有效并且敏感的。ANSYS is used to simulate the damage of a simply supported bridge. In two kinds of conditions, the curves of strain mode and difference of strain mode are obtained. The curves of displacement mode are compared, then, it is found that the indexed of strain mode and difference of strain mode are effective and sensitive for the identification of damage location.

关 键 词：简支梁桥 应变模态 应变模态差 位移模态 损伤位置 

分 类 号：U441.4[建筑科学—桥梁与隧道工程]