基于遗传算法的简支梁桥结构损伤识别方法

Research on Structural Damage Identification Method of Simply Supported Beam Bridge Based on Genetic Algorithm

以某简支T梁桥的损伤识别为例,运用遗传算法,以结构各单元的刚度折减系数作为设计变量,采用在实验加载过程中观测的实测位移与该结构无损伤时的理论位移的误差作为遗传算法的目标函数。结果证明遗传算法在简支梁桥结构损伤识别的可行性和合理性。

This paper takes the damage identification of simply supported T-beam bridge for example,uses the genetic algorithm,and the structure of each unit stiffness reduction coefficient as design variables,takes the error of the actual displacement when in the load experiment and the theoretical displacement when the structure without damage as the genetic algorithm target fuction.The results show that the genetic algorithm is feasible and rational in damage identification of the simply supported beam bridge structural.