標題: Physical system identification of an isolated bridge using seismic response data
作者: Huang, Ming-Chih
Wang, Yen-Po
Chang', Jer-Rong
Chien, Chia-Shang Chang
土木工程學系
Department of Civil Engineering
關鍵字: physical identification;isolated bridge;soil-structure interaction;hysteresis;lead-rubber bearings
公開日期: 1-三月-2009
摘要: This paper develops a system identification process based on seismic response data to investigate the physical parameters of an isolated highway bridge equipped with the lead-rubber bearings (LRBs). The effects of soil-structure interaction (SSI) of the highway bridge built on pile foundations are taken into account in the analysis. Unlike many other identification methods that generally seek for the equivalent system parameters or modal parameters of the target structure, the proposed method aims at identifying physical parameters such as the pier stiffness or hysteresis of the LRB that are considered more critical and useful for health monitoring of bridges. In this study, a linear elastic model is used for the pier while a bilinear model is considered to characterize the hysteretic behavior of the LRB. The bilinear hysteretic model is in turn reduced to a backbone curve based on the Masing criterion by which the multi-valued restoring force is transformed into a single-valued function so that the computational effort of the identification process can be minimized. Numerical examples have been conducted, including the identification of Bai-Ho Bridge, which is the first seismic isolation bridge in Taiwan, to demonstrate the feasibility of the proposed technique for dynamic systems with inelastic components and SSL Copyright (C) 2008 John Wiley & Sons, Ltd.
URI: http://dx.doi.org/10.1002/stc.310
http://hdl.handle.net/11536/7608
ISSN: 1545-2255
DOI: 10.1002/stc.310
期刊: STRUCTURAL CONTROL & HEALTH MONITORING
Volume: 16
Issue: 2
起始頁: 241
結束頁: 265
顯示於類別:期刊論文