Finite-Element Model to Evaluate Nonlinear Behavior of Posttensioned Composite Beams with Partial Shear Connection
Publication: Journal of Structural Engineering
Volume 141, Issue 8
Abstract
A finite-element (FE) model to simulate nonlinear structural behavior of posttensioned composite beams with partial shear connectors is introduced in this paper. Stress-strain material models for concrete and steel are implemented in the FE formulations and the nonlinear load-slip relation of shear connectors is also considered. With the load-slip relation, a nonlinear numerical formulation to consider the slip effect along the interface of posttensioned composite beams is derived. A solution procedure, which includes modeling of the section in prestressed concrete (PSC) structures, tendon behavior for consideration of sequential loading conditions, and a unique section analysis methodology to consider the partial shear connection of posttensioned composite beams, is also proposed. Numerical results yielded by the proposed model are compared with experimental results for verification of the model’s performance. The results show satisfactory structural behavior of partially composite posttensioned beams, and thus the applicability of the proposed FE model is validated.
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Acknowledgments
This research was supported by a grant (07High Tech A01) from the High-tech Urban Development Program funded by the Ministry of Land, Transportation and Maritime Affairs of the South Korean government and by the Innovations in Nuclear Power Technology (Development of Nuclear Energy Technology) of the Korea Institute of Energy Technology Evaluation and Planning (20101620100050) grant funded by the Korean government’s Ministry of Knowledge Economy.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 8 • August 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 4, 2013
Accepted: Aug 16, 2014
Published online: Sep 22, 2014
Discussion open until: Feb 22, 2015
Published in print: Aug 1, 2015
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