A performance-based optimal structural design methodology
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.
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Additional details
- Eprint ID
- 26261
- Resolver ID
- CaltechEERL:1998.EERL-97-03
- Created
-
2008-02-19Created from EPrint's datestamp field
- Updated
-
2021-08-18Created from EPrint's last_modified field
- Caltech groups
- Earthquake Engineering Research Laboratory
- Series Name
- EERL Report
- Series Volume or Issue Number
- 1997-03