Multi-scale finite element modeling and model updating of long span cable-stayed bridge

作者：Xiao, Xiang; Yan, Yu; He, Jia; Chen, Bo

来源：Journal of Huazhong University of Science and Technology (Natural Science Edition), 2017, 45(6): 120-127.

DOI：10.13245/j.hust.170623

• Displacement response
• Long-span bridge
• Member stress
• Model updating
• Multi-scale

The basic framework and method for the establishment of the multi-scale finite element model of long-span bridges were presented. Firstly, an initial model was established with the aids of the sub-structure technique according to design drawings of bridge, and then, a multi-scale model updating method was developed by using the multi-scale index constructed by the frequency, displacement and strain data, which were measured by the health monitoring system of the bridge. By using this updating method, a multi-scale baseline FEM of bridge was obtained, and the validity and practicability of which were investigated through the comparison between the measured data and the observations.

• 出版日期2017
• 单位三峡大学