Analytical and Experimental Lateral Load Behavior of Unbonded Posttensioned Precast Concrete Walls
Publication: Journal of Structural Engineering
Volume 133, Issue 11
Abstract
The use of unbonded posttensioned (UPT) precast concrete walls with horizontal joints as the primary lateral load resisting system in seismic zones has been considered in several previous studies. This paper introduces a design-oriented analytical model that uses simple formulae to estimate the nonlinear lateral load behavior of UPT walls, and compares this simple model with available experimental results. A previously developed UPT wall model based on fiber elements is also compared with experimental results. Each model is formulated to consider several critical limit states in the lateral load behavior of UPT walls. Comparisons showed generally good agreement between analytical and experimental results for three different test walls under monotonic and cyclic loading. The simple model is found to be sufficiently accurate for seismic design of UPT walls, and the fiber model is found to be sufficiently accurate for estimating UPT wall response under earthquake loading.
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Acknowledgments
This research was conducted at Lehigh University. The writers are grateful for funding from the National Science Foundation (Award No. NSF9612165), the Precast/Prestressed Concrete Institute, and the Pennsylvania Department of Community and Economic Development through a grant to the Pennsylvania Infrastructure Technology Alliance. Numerous individuals from the precast concrete industry provided assistance and materials for the experimental program. The writers thank Professor Emeritus Le-Wu Lu and the ATLSS Center and Fritz Laboratory technical staff for their contributions. The findings, opinions, and conclusions expressed in the paper are those of the writers, and do not necessarily reflect the opinions of those acknowledged here.
References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 11 • November 2007
Pages: 1531 - 1540
Copyright
© 2007 ASCE.
History
Received: Feb 14, 2006
Accepted: Jun 1, 2006
Published online: Nov 1, 2007
Published in print: Nov 2007
Notes
Note. Associate Editor: Yahya C. Kurama
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