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Shock and Vibration
Volume 2016, Article ID 1823015, 12 pages
http://dx.doi.org/10.1155/2016/1823015
Research Article

Seismic Behavior of Posttensioned Concrete Bridge Piers with External Viscoelastic Dampers

Ministry-of-Education Key Laboratory of Structural Dynamic Behavior and Control, School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received 15 December 2015; Revised 15 March 2016; Accepted 16 March 2016

Academic Editor: Kenneth J. Loh

Copyright © 2016 Anxin Guo and Huixing Gao. 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.

Abstract

This paper investigates the seismic performance of posttensioned concrete piers with external viscoelastic dampers to improve the energy dissipation capacity of this type of structure. An installation scheme for viscoelastic dampers on bridge piers is proposed, and the mechanical models of the damper are analyzed according to the installation scheme. By attaching the viscoelastic dampers to the posttensioned bridge piers, the analytical model of the hybrid system is established using the OpenSees finite element analysis package. Cyclic behavior and time history analyses are conducted on a posttensioned bridge with and without viscoelastic dampers using the established finite element model. The analysis results indicate that the viscoelastic dampers can effectively improve the seismic performance of the bridge structures with posttensioned piers.