基于测量信息重构的结构物理参数识别方法研究

Study on Identification Method for Structural Parameters Based on Survey Information Reconstruction

通过对测量加速度借助于积分算子变换法及Newmark-β法重构出其它响应量,得到变换空间内的完备响应信息,再利用最小二乘原理及分解算法实现结构物理参数的识别并反演出变换空间内的未知荷载。以层剪切模型及桁架模型为例,准确地识别出结构的物理参数并能很好地反演变换空间内的荷载,为结构的损伤检测提供一种简便的分析方法。

The complete response information in transformation space is reconstructed based on the measured acceleration with integral operator and Newmark-β method. The structural parameters and unknown loads in transformation space can be exactly detected by using least square and decomposition algorithm. Taking shear layer model and truss model for example, the identification method can, accurately identify physical parameters of the structure and transform a good inversion of the load space. The paper can provide an analysis method for damage detection of structure.