Optimal topology design of bracing systems for multi-story steel frames

Liang, Qing Quan and Xie, Yi Min and Steven, Grant P. (2000) Optimal topology design of bracing systems for multi-story steel frames. Journal of Structural Engineering, 126 (7). pp. 823-829. ISSN 0733-9445

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Abstract

This paper presents a performance-based optimization method for optimal topology design of bracing systems for multistory steel building frameworks with overall stiffness constraint under multiple lateral loading conditions. Material removal criteria are derived by undertaking a sensitivity analysis on the mean compliance of a structure with respect to element removal. A performance index is proposed to evaluate the performance of resulting bracing systems in the optimization process. Tn the proposed method, unbraced frameworks are initially designed under strength constraints using commercial standard steel sections from databases. The optimal topology of a bracing system for the multistory steel building framework is then generated by gradually removing inefficient materials from a continuum design domain that is used to stiffen the framework until the performance of the bracing system is maximized. Two design examples are provided to illustrate the effectiveness of the performance-based design optimization method proposed for the conceptual layout design of lateral bracing systems for multistory steel building frameworks.

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Item Type:	Article (Commonwealth Reporting Category C)
Refereed:	Yes
Item Status:	Live Archive
Additional Information:	Deposited with permissision of publisher. Link to published version provided by Publisher.
Faculty / Department / School:	Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited:	11 Oct 2007 01:17
Last Modified:	02 Jul 2013 22:48
Uncontrolled Keywords:	Bracing systems, finite element analysis, framworks, performance-based optimization, topology optimization
Fields of Research :	09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Identification Number or DOI:	doi: 10.1061/(ASCE)0733-9445(2000)126:7(823)
URI:	http://eprints.usq.edu.au/id/eprint/2948

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