摘要
基于频率测量的结构损伤识别方法具有测试简便,精度较好的优点。在分析结构固有频率用于结构损伤识别的机理的基础上,对一种较好的基于频率的结构损伤识别方法进行了综合评述,并对针对其不足进行了改进。钢筋混凝土三跨连续梁的数值模拟计算表明,中低损伤度的识别结果令人满意。经过改进的方法计算简单,综合识别能力较强,便于工程应用。
Structure Damage Detection Method (SDDM) based on frequency measurement exhibits a feature that natural frequencies of a structure can be measured conveniently with relatively high precision. Some improvements to the SDDM proposed by Stubbs are presented. Simulation analysis for a 3-span continuous RC beam is given. For slight and moderate damage detection, the results are satisfactory. It is shown that the proposed algorithm has the advantages of computational simplicity and better identification capacity. Therefore, it is convenient for engineering practice.
出处
《工程力学》
EI
CSCD
北大核心
2004年第1期21-25,共5页
Engineering Mechanics
基金
广东省自然科学基金资助项目(000387)
关键词
土木建筑结构
健康监测
损伤识别
频率
building structure
health monitoring
damage detection
frequency
