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Shock and Vibration
Volume 2015, Article ID 423898, 14 pages
Research Article

A PSO Driven Intelligent Model Updating and Parameter Identification Scheme for Cable-Damper System

1Department of Bridge Engineering, Tongji University, Shanghai 200092, China
2Henan Provincial Communications Planning Survey & Design Institute Co., Ltd., Zhengzhou 450000, China

Received 15 February 2015; Revised 20 May 2015; Accepted 18 June 2015

Academic Editor: Miguel Neves

Copyright © 2015 Danhui Dan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The precise measurement of the cable force is very important for monitoring and evaluating the operation status of cable structures such as cable-stayed bridges. The cable system should be installed with lateral dampers to reduce the vibration, which affects the precise measurement of the cable force and other cable parameters. This paper suggests a cable model updating calculation scheme driven by the particle swarm optimization (PSO) algorithm. By establishing a finite element model considering the static geometric nonlinearity and stress-stiffening effect firstly, an automatically finite element method model updating powered by PSO algorithm is proposed, with the aims to identify the cable force and relevant parameters of cable-damper system precisely. Both numerical case studies and full-scale cable tests indicated that, after two rounds of updating process, the algorithm can accurately identify the cable force, moment of inertia, and damping coefficient of the cable-damper system.