杨汉青


摘 要:房屋或桥梁等大型建筑物在服役期间或灾后会产生损伤,日积月累则会产生安全隐患,危害人们的生命和财产安全,因此对结构的损伤情况进行识别具有非常重要的工程价值和实际意义。目前,国内外在结构损伤识别领域已经获得了很多优秀的研究成果。本文主要从基于静力参数的损伤识别方法、基于动力指纹的损伤识别方法以及基于智能算法的损伤识别方法3个方面对结构损伤识别方法进行综述。
关键词:静力参数;动力指纹;损伤识别;智能算法
中图分类号:TU317;TU399 文献标识码:A 文章编号:1003-5168(2021)25-0107-03
Review on Research Progress of Structural Damage Identification
YANG Hanqing
(North China University of Water Resources and Electric Power, Zhengzhou Henan 450045)
Abstract: Large buildings such as bridges will be damaged during service or after disasters. Over time, they will produce potential safety hazards and endanger people's life and property safety. Therefore, the identification of structural damage has very important engineering value and practical significance. At present, many excellent research results have been made in the field of structural damage identification at home and abroad. This paper mainly summarized the structural damage identification methods from three aspects: the damage identification method based on static parameters, the damage identification method based on dynamic fingerprint and the damage identification method based on intelligent algorithm
Keywords: static parameters;dynamic fingerprints; damage identification;intelligent algorithm
房屋或橋梁等大型建筑物在服役期间或灾后会产生损伤。结构若发生损伤,则会大大增加建筑物发生事故的概率。当损伤程度过大时,结构表面会产生裂缝,此时仅通过观察就可以判断结构的损伤位置及大概的损伤程度,从而可以及时对结构采取加固等措施以解决出现的安全隐患;当损伤程度较小或发生在内部时,无法通过观察法对结构的损伤情况进行判断,此时需要结合其他方法对结构损伤情况进行判断。目前,国内外较为成熟的损伤识别技术主要是以结构静力参数、动力参数以及各种参数组合作为判别损伤的指标。本文主要对常用的损伤识别方法进行一定的归纳和总结。
1 基于静力参数的损伤识别方法
结构的静力参数变化指的是结构在静力作用下产生的位移、挠度、转角、应力以及应变等变化。该变化与作用在结构上的恒载直接相关,若结构本身发生变化,则在相同荷载下的静力参数也会随之变化。……