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Mathematical Problems in Engineering
Volume 2014 (2014), Article ID 683057, 14 pages
http://dx.doi.org/10.1155/2014/683057
Research Article

Evaluation of Seismic Behaviors of Partially Deteriorated Reinforced Concrete Circular Columns Retrofitted with CFRP

1State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2Landscapes and Architecture College, Zhejiang Agricultural and Forestry University, Lin’an 311300, China
3School of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, China

Received 13 May 2014; Accepted 6 August 2014; Published 25 September 2014

Academic Editor: Alkiviadis Paipetis

Copyright © 2014 Dongxu Hou 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.

Abstract

Deficiency of the concrete strength in some regions of reinforced concrete (RC) columns in practice may weaken the seismic behaviors of columns. Its effects on RC columns should be well understood. This paper aims to investigate the influences of deteriorated segment on the seismic behaviors of partially deteriorated RC columns and attempts to recover the seismic behaviors of partially deteriorated columns with Carbon Fiber Reinforced Polymer (CFRP) composites. A finite element analysis was carried out to simulate the seismic behaviors of CFRP-confined partially deteriorated RC columns. The numerical results were verified by the laboratory tests of six specimens. Based on the finite element results, the failure location of partially deteriorated columns in an earthquake was predicted, and the effectiveness of CFRP retrofitted on partially deteriorated columns was evaluated.