Unbonded Posttensioned Concrete Bridge Piers. II: Seismic Analyses
This article is a reply.
VIEW THE ORIGINAL ARTICLEPublication: Journal of Bridge Engineering
Volume 8, Issue 2
Abstract
The seismic response characteristics of a proposed unbonded posttensioned concrete bridge-pier system are evaluated. Time-history analyses are carried out on prototype designs of single-column piers and two-column bents using detailed nonlinear finite-element (FE) models and equivalent single-degree-of-freedom (SDOF) systems embedded with phenomenological constitutive models. The phenomenological models are based on the hysteretic behavior of the prototype designs from cyclic analyses using nonlinear FE models, which have been calibrated and verified against experiments. The two modeling techniques are compared and evaluated for simulating the response of unbonded posttensioned bridge piers. Extensive time-history analyses are carried out on the SDOF models to study the influence of unbonded posttensioning on seismic response. To assess the adequacy of the proposed bridge-pier system, the seismic demands on the prototype designs are compared to their capacities as established in a companion paper. The applicability of current bridge design specifications to designing the proposed bridge-pier system is discussed.
Get full access to this article
View all available purchase options and get full access to this article.
References
AASHTO. (1996), Standard specifications for highway bridges, 16th Ed., Washington, D.C.
Cheok, G. S., Stone, W. C., and Kunnath, S. K.(1998). “Seismic response of precast concrete frames with hybrid connections.” ACI Struct. J., 95(5), 527–539.
Kwan, W.-P. (2001). “Seismic analysis, behavior and performance-based design of unbonded post-tensioned concrete substructure systems.” PhD dissertation, Research Rep. No. 01-01, Cornell Univ., Ithaca, N.Y.
Kwan, W.-P., and Billington, S. L.(2001). “Simulation of structural concrete under cyclic load.” J. Struct. Eng., 127(12), 1391–1401.
Kwan, W.-P., and Billington, S. L.(2003). “Unbonded posttensioned concrete bridge piers. I: Monotonic and cyclic analyses.” J. Bridge Eng., 8(2), 92–101.
Mander, J. B., Priestley, M. J. N., and Park, R.(1988). “Theoretical stress-strain model for confined concrete.” J. Struct. Eng., 114(8), 1804–1826.
Rojahn, C., Mayes, D. G., Clark, A. J., Horn, J. H., Nutt, R. V., and O’Rourke, M. J. (1997). “Seismic design criteria for bridges and other highway structures.” Technical Rep. NCEER-97-0002, National Center for Earthquake Engineering Research, State Univ. of New York at Buffalo, N.Y.
SAC. (1997). Draft Report: Develop suites of time histories, SAC Joint Venture Steel Project Phase 2, Task: 5.4.1 〈http://qiver.eerc.berkeley.edu:8080/studies/system/draftreport.html〉.
Valles, R. E., Reinhorn, A. M., Kunnath, C. L., and Madan, A. (1996). “IDARC2D version 4.0: A computer program for the inelastic damage analysis of buildings.” Technical Rep. NCEER-96-0010, National Center for Earthquake Engineering Research, State Univ. of New York at Buffalo, N.Y.
Information & Authors
Information
Published In
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Jul 17, 2001
Accepted: Jan 15, 2002
Published online: Feb 14, 2003
Published in print: Mar 2003
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.