基于曲率模态的连续刚构桥损伤识别研究

Research on the Continuous-rigid Bridge Damage Identification Based on Curvature Mode

损伤识别是大型桥梁综合监测系统的重要任务之一。从曲率模态的损伤识别方法入手,研究了曲率模态损伤指标。对某一连续刚构桥进行数值仿真分析,分别通过曲率模态差和曲率模态比进行了损伤位置和损伤程度的识别,识别效果较好。

Damage identification is one of the most important tasks in large bridge integrated monitoring system. In this paper, the damage identification methods based on the curvature mode was introduced at the beginning, then the damage indicators were studied at the theory. Through the continuous-rigid bridge numerical simulation analysis, the damage location and the extent was identified respectively based on the curvature mode changes and the curvature mode ratio, and the results is very good, which is of great significance to bridge real-time health monitoring.