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The Scientific World Journal
Volume 2013 (2013), Article ID 190430, 12 pages
Research Article

Behaviour of Plate Anchorage in Plate-Reinforced Composite Coupling Beams

Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong

Received 28 August 2013; Accepted 11 September 2013

Academic Editors: E. Lui, J. Mander, Z. Tao, and İ. B. Topçu

Copyright © 2013 W. Y. Lam 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.


As a new alternative design, plate-reinforced composite (PRC) coupling beam achieves enhanced strength and ductility by embedding a vertical steel plate into a conventionally reinforced concrete (RC) coupling beam. Based on a nonlinear finite element model developed in the authors’ previous study, a parametric study presented in this paper has been carried out to investigate the influence of several key parameters on the overall performance of PRC coupling beams. The effects of steel plate geometry, span-to-depth ratio of beams, and steel reinforcement ratios at beam spans and in wall regions are quantified. It is found that the anchorage length of the steel plate is primarily controlled by the span-to-depth ratio of the beam. Based on the numerical results, a design curve is proposed for determining the anchorage length of the steel plate. The load-carrying capacity of short PRC coupling beams with high steel ratio is found to be controlled by the steel ratio of wall piers. The maximum shear stress of PRC coupling beams should be limited to 15 MPa.