Analytical Modeling and Design Validation of Posttensioned Precast Concrete Coupling Beams for Seismic Regions
Publication: Journal of Structural Engineering
Volume 138, Issue 2
Abstract
This paper provides an experimental validation on the analytical modeling and design of unbonded posttensioned precast concrete coupling beams. Previous test results from a series of floor-level coupling beam subassembly specimens are compared with the predicted results from a fiber-element analytical model. The test results are also used to validate an idealized coupling beam end moment versus chord rotation relationship that was developed as a design tool following basic principles of equilibrium, compatibility, and constitutive relationships. Based on the experimental and analytical comparisons, the paper presents a seismic design approach to achieve the desired lateral strength, stiffness, ductility, and energy dissipation capacity in unbonded posttensioned precast coupling beams.
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Acknowledgments
This research was funded by the National Science Foundation (NSF) under Grant No. NSFNSF/CMS 04-09114 and by a Precast/Prestressed Concrete Institute (PCI) Daniel P. Jenny Research Fellowship. The support of the NSF Program Director Dr. P. N. Balaguru and members of the PCI Research and Development Committee is gratefully acknowledged. The authors also acknowledge the technical support by Cary Kopczynski of Cary Kopczynski and Company, Inc. In addition, the following companies have contributed to the project through material donations and assistance, and this support is gratefully acknowledged: StresCore Inc., Precision SURE-LOCK, Dywidag-Systems International. The findings and conclusions in the paper are those of the authors and do not necessarily reflect the views of the organizations and individuals acknowledged.
References
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Information
Published In
Journal of Structural Engineering
Volume 138 • Issue 2 • February 2012
Pages: 224 - 234
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Jul 22, 2010
Accepted: Apr 18, 2011
Published online: Apr 20, 2011
Published in print: Feb 1, 2012
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