基于位移连续的静力损伤识别

为减小采用挠度法对桥梁结构进行静力损伤识别时识别结果出现误判的可能性,从位移连续条件出发对桥梁结构建立损伤识别模型,通过使理论计算挠度值逼近实测值,同时使节点相对转角最小,提出位移连续静力损伤识别法,然后利用多目标最优化方法求解。以简支梁为例对该方法的准确性进行验证,结果表明:该方法综合考虑了挠度与相对转角2个位移连续性条件,与实际情况更接近,在一定程度上降低了损伤误判的可能性。

Static Damage Identification Based on Displacement Continuity

To reduce the possibility of misjudgement of the static damage identification results of bridge strucure identified by the defelction method,a damage identification model for the strucure is established according to the displacement continuity conditions.By approaching the calculated deflection value to the measured one and making the relative rotation angle of the node the least,the static damage identification method based on the displacement continuity is proposed and the multi-objective optimization met...