Abstract
With the continuing development of displacement-based and performance-based seismic design principles in the bridge engineering community comes the need to address issues that have historically been omitted from, or else treated in a vague manner within, bridge design specifications. It is likely that future design provisions will lead engineers to conduct more refined analyses compared to those currently adopted in some cases. This paper discusses four areas in the prediction of inelastic behavior in bridges, two on the capacity side and two on the demand side. On the capacity side, (1) choice of element type, force based or displacement based, and (2) effects from geometric nonlinearities are discussed. On the demand side, (1) differences between building design spectra and bridge design spectra are discussed, and (2) issues related to viscous damping levels adopted for nonlinear analysis are brought to the attention of practicing engineers.
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Information & Authors
Information
Published In
Practice Periodical on Structural Design and Construction
Volume 21 • Issue 3 • August 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Nov 1, 2015
Accepted: Jan 7, 2016
Published online: Feb 19, 2016
Discussion open until: Jul 19, 2016
Published in print: Aug 1, 2016
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