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.
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References
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Information
Published In
Journal of Bridge Engineering
Volume 8 • Issue 2 • March 2003
Pages: 102 - 111
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
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