结构损伤的动力学识别方法研究  

STUDY ON DYNAMIC DETECTION METHODS OF DAMAGED STRUCTURES

作　　者：汤海燕[1] 

机构地区：[1]南京工业大学土木工程学院,南京210009

出　　处：《低温建筑技术》2005年第1期49-51,共3页Low Temperature Architecture Technology

摘　　要：针对桥梁结构的安全监测和评估问题,研究了 3种结构损伤动力学检测方法,分析了柔度差方法和曲率模态法应用于损伤检测的局限性。提出柔度曲率的概念,只需结构前 2或 3阶振型和频率数据即可准确识别出结构损伤位置,并用有限元仿真实验结果验证了该方法的可行性和正确性。In this paper,three damage detection methods for damaged structures were investigated to improve safety monitoring and evaluation of beam bridges.The flexibility curvature was proposed that only requires the mode and frequency data of the first 2 or 3 modes.The feasibility and validity of this method were verified through finite element results.

关 键 词：损伤识别 柔度差 曲率模态 柔度曲率 

分 类 号：TU317.9[建筑科学—结构工程]