基于模态分析的拱结构损伤识别研究

Study on the arch structure damage identification based on modal analysis

概述了模态分析的基本理论,分别进行不同损伤程度下的单处损伤和多处损伤的模态试验,得到各工况下拱的固有频率与振型,采用曲率模态差对拱进行损伤识别。

Provided an overview of the basic theory of modal analysis, and took the modal test of different degree of injury of single damage and multiple damages, to obtain the natural frequencies and vibration mode of arch type, using modal curvature modal difference for damage identification.