Development of Multiobjective Optimization Procedures for Seismic Design of Steel Moment Frame Structures
Liu, Min
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Permalink
https://hdl.handle.net/2142/83220
Description
Title
Development of Multiobjective Optimization Procedures for Seismic Design of Steel Moment Frame Structures
Author(s)
Liu, Min
Issue Date
2003
Doctoral Committee Chair(s)
Scott A. Burns
Yi-Kwei Wen
Department of Study
Civil Engineering
Discipline
Civil Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Civil
Language
eng
Abstract
Genetic algorithm based automated seismic design procedures are developed in the present study for member sizing optimization of code-compliant regular plane steel special moment resisting frame structures with simultaneous as well as separate treatment of multiple objective functions that reflect steel material usage, initial expenses, degree of design complexity, seismic structural performance indices, and lifetime seismic damage cost, respectively. A wide distribution of valid alternative designs is obtained that establishes optimized tradeoff among all relevant conflicting merit objectives. Therefore, structural engineers have much broader view of the entire optimized design space and thus more flexibility to select, through an explicit tradeoff decision-making process with valuable engineering experiences, the most desirable cost-effective design solution that balances different merit aspects in a preferred manner.
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