Method for Probabilistic Displacement-Based Design of RC Structures
Publication: Journal of Structural Engineering
Volume 138, Issue 5
Abstract
An approximate method is proposed for seismic design of reinforced concrete (RC) structures to meet multiple structural performance requirements expressed in terms of exceedance probabilities. The method is approximate in nature and rests on two main results: (1) the closed-form solution for the mean annual rate of exceedance of a limit state and (2) the empirical equal-displacement rule. Compliance with design objectives is obtained through a gradient-based search algorithm in the space of the design variables with reference to a linear elastic proxy of the structure. To this purpose, analytical gradients for Cornell’s formula are derived. An application illustrates the method and its validation through inelastic time-history analysis. From the limited investigation carried out, the method appears to offer satisfactory accuracy.
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Acknowledgments
The contribution to this work given by Dr. Fabrizio Noto is gratefully acknowledged.
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Information
Published In
Journal of Structural Engineering
Volume 138 • Issue 5 • May 2012
Pages: 585 - 591
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Jun 8, 2010
Accepted: Aug 11, 2011
Published online: Aug 13, 2011
Published in print: May 1, 2012
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