Topology Optimisation of Bridge Type Structures with Stress and Displacement Constraints

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Title Topology Optimisation of Bridge Type Structures with Stress and Displacement Constraints
Author Guan, Hong; Chen, Andrea Y.J.; Loo, Yew-Chaye
Journal Name International Journal of Computational Engineering Science
Editor Reddy J N & Lam K Y
Year Published 2001
Place of publication UK
Publisher Imperial College Press
Abstract In recent years there has been a growing interest worldwide in stress based topology optimization which aims at achieving least weight and more uniformly stressed designs. This paper presents the optimum topology design of arch, tied arch and cable-stayed bridges by means of the evolutionary structural optimization method (ESO). This can be accomplished by employing the evolutionary optimization scheme incorporating the principal stress criteria, thereby utilizing the available tensile and compressive materials more effectively. In addition to the stress constraint, the displacement constraint is also considered in the optimization process. Two performance index formulae have been proposed for tension- and compression-dominant designs based on the element stresses. They can be used effectively to reflect the variations of the maximum principal stresses and the design volume during the evolutionary process, hence indicating the optimum topology for the final design. The optimum designs of the aforementioned three types of bridges are investigated under various loading conditions. Further, comparisons are made between each individual design for a certain type of bridge and the performance of the design is also examined.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2001 Imperial College Press. Self-archiving of the author-manuscript version is not yet supported by this publisher. Please refer to the journal link for access to the definitive, published version or contact the author for more information
Volume 2
Issue Number 2
Page from 199
Page to 221
ISSN 1465-8763
Date Accessioned 2002-04-03
Language en_AU
Subject PRE2009-Structural Engineering
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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