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A performance-based optimal structural design methodology

Beck, James L. and Papadimitriou, Costas and Chan, Eduardo and Irfanoglu, Ayhan (1998) A performance-based optimal structural design methodology. California Institute of Technology . (Unpublished) http://resolver.caltech.edu/CaltechEERL:1998.EERL-97-03

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Abstract

A general framework for multi-criteria optimal design is presented which is well-suited for performance-based design of structural systems operating in an uncertain dynamic environment. A decision theoretic approach is used which is based on aggregation of preference functions for the multiple, possibly conflicting, design criteria. This allows the designer to trade off these criteria in a controlled manner during the optimization. Reliability-based design criteria are used to maintain user-specified levels of structural safety by properly taking into account the uncertainties in the modeling and seismic loads that a structure may experience during its lifetime. Code-based requirements are also easily incorporated into this optimal design process. The methodology is demonstrated with two simple examples involving the design of a three-story steel-frame building for which the ground motion uncertainty is characterized by a probabilistic response spectrum which is developed from available attenuation formulas and seismic hazard models.


Item Type:Report or Paper (Technical Report)
Group:Earthquake Engineering Research Laboratory
Record Number:CaltechEERL:1998.EERL-97-03
Persistent URL:http://resolver.caltech.edu/CaltechEERL:1998.EERL-97-03
Usage Policy:You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format.
ID Code:26261
Collection:CaltechEERL
Deposited By: Imported from CaltechEERL
Deposited On:19 Feb 2008
Last Modified:26 Dec 2012 13:55

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