摘要
将建筑结构简化为层剪切模型,基于模态频率对刚度的灵敏度,运用最小二乘原理,采用迭代寻优的方法,根据被测试的建筑物的固有频率,识别出系统的层间刚度。算例表明迭代速度快、精度高,通过和损伤前刚度的比较,能够准确地识别出结构损伤的位置和损伤量。
This paper, which based on the sensitivity of modal frequency to rigidity, simplify building structrue to drift shear model and identified the system＇ s rigidity by using least squar theory ＆ iterative method according to the natural frequency of the tested building. The present method showed high iterative speed and high accuracy through actual computation, And it is indicated that this method can exactly detect the location and the severity of the damage of building structure by comparing with the rigidity of building structure without damage.
出处
《江苏建筑》
2005年第3期31-32,共2页
Jiangsu Construction
关键词
刚度识别
灵敏度
迭代
损伤因子
Identification for Stiffness
Sensitivity
Iterative Method
Damage Factor
