基于信赖域算法的板梁桥横向连接刚度的参数识别

Parameter Identification of Transverse Coupling Stiffness for Plate Girder Bridges Based on Trust Region Algorithm

文结合有限元模型修正技术,通过ANSYS有限元程序进行桥梁结构的有限元建模,引入信赖域算法调整参数,实现了对空心板桥铰缝横向连接刚度的参数识别,数值算例表明该方法能正确、有效地进行桥梁结构的有限元模型的参数识别,并有一定的抗噪声能力。

The technology of finite element model updating is applied to solve the problem. By calling subprogram of ANSYS and using trust region algorithm, plate girder bridges is realized. The effectiveness, are verified by a numerical example. parameter identification of transverse coupling stiffness of correctness and better ability to resist measurement noises are verified by a numerical example.