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Proceedings Paper

Analysis of longitudinal seismic response of bridge with magneto-rheological elastomeric bearings
Author(s): Rui Li; Xi Li; Yueyuan Wu; Shiwei Chen; Xiaojie Wang
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Paper Abstract

As the weakest part in the bridge system, traditional bridge bearing is incapable of isolating the impact load such as earthquake. A magneto-rheological elastomeric bearing (MRB) with adjustable stiffness and damping parameters is designed, tested and modeled. The developed Bouc-Wen model is adopted to represent the constitutive relation and force-displacement behavior of an MRB. Then, the lead rubber bearing (LRB), passive MRB and controllable MRB are modeled by finite element method (FEM). Furthermore, two typical seismic waves are adopted as inputs for the isolation system of bridge seismic response. The experiments are carried out to investigate the different response along the bridge with on-off controlled MRBs. The results show that the isolating performance of MRB is similar to that of traditional LRB, which ensures the fail-safe capability of bridge with MRBs under seismic excitation. In addition, the controllable bridge with MRBs demonstrated the advantage of isolating capacity and energy dissipation, because it restrains the acceleration peak of bridge beam by 33.3%, and the displacement of bearing decrease by 34.1%. The shear force of the pier top is also alleviated.

Paper Details

Date Published: 20 April 2016
PDF: 8 pages
Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98034I (20 April 2016); doi: 10.1117/12.2218867
Show Author Affiliations
Rui Li, Chongqing Univ. of Posts and Telecommunications (China)
Xi Li, Chongqing Univ. of Posts and Telecommunications (China)
Yueyuan Wu, Chongqing Univ. of Posts and Telecommunications (China)
Shiwei Chen, Chongqing Univ. of Science and Technology (China)
Xiaojie Wang, Chongqing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 9803:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
Jerome P. Lynch, Editor(s)

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