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

Article

Liang, Qing Quan, 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. https://doi.org/10.1061/(ASCE)0733-9445(2000)126:7(823)
Article Title

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

ERA Journal ID36383
Article CategoryArticle
AuthorsLiang, Qing Quan (Author), Xie, Yi Min (Author) and Steven, Grant P. (Author)
Journal TitleJournal of Structural Engineering
Journal Citation126 (7), pp. 823-829
Number of Pages24
Year2000
Place of PublicationNew York, USA
ISSN0733-9445
1943-541X
Digital Object Identifier (DOI)https://doi.org/10.1061/(ASCE)0733-9445(2000)126:7(823)
Web Address (URL)http://ascelibrary.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JSENDH000126000007000823000001&idtype=cvips&prog=normal
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.

KeywordsBracing systems, finite element analysis, framworks, performance-based optimization, topology optimization
ANZSRC Field of Research 2020400510. Structural engineering
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File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsUniversity of Western Sydney
Victoria University of Technology
University of Sydney
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