Topology optimization of strut-and-tie models in non-flexural reinforced concrete members

Paper

Liang, Qing Quan, Xie, Yi Min, Steven, Grant P. and Schmidt, L. C.. 1999. "Topology optimization of strut-and-tie models in non-flexural reinforced concrete members." Hadi, Muhammad N. S. and Schmidt, L. C. (ed.) International Conference on Mechanics of Structures, Materials and Systems (1999). Wollongong, Australia 17 - 19 Feb 1999 Wollongong, Australia.
Paper/Presentation Title

Topology optimization of strut-and-tie models in non-flexural reinforced concrete members

Presentation TypePaper
AuthorsLiang, Qing Quan (Author), Xie, Yi Min (Author), Steven, Grant P. (Author) and Schmidt, L. C. (Author)
EditorsHadi, Muhammad N. S. and Schmidt, L. C.
Journal or Proceedings TitleProceedings of the International Conference on Mechanics of Structures, Materials and Systems
Journal Citation1, pp. 309-315
Number of Pages7
Year1999
Place of PublicationWollongong, Australia
ISBN086418588X
Conference/EventInternational Conference on Mechanics of Structures, Materials and Systems (1999)
Event Details
International Conference on Mechanics of Structures, Materials and Systems (1999)
Event Date
17 to end of 19 Feb 1999
Event Location
Wollongong, Australia
Abstract

This paper deals with the topology optimization of strut-and-tie models in non-flexural reinforced concrete members by using the Evolutionary Structural Optimization (ESO) method for plane stress continuum structures with displacement constraints. By means of systematically removing elements that have less contribution to the stiffness from the discritized concrete member, the actual load paths within the member are gradually characterized by the remaining elements. The optimal topology of the strut-and-tie model is determined from the performance index history based on the optimization criterion of minimizing the weight of the structure while the constrained displacement is within an acceptable limit. Two examples are provided to illustrate the effectiveness of the present procedure in automatically finding the actual load paths in a reinforced concrete deep beam with web openings and a corbel. It is demonstrated that the ESO method and the performance index are capable in generating reliable optimal strut-and-tie models that are supported by analytical solutions and experimental evidence, and can be used in practice especially in the design of complex structures where no previous experience is available.

Keywordscorbel, deep beam, performance index, performance-based optimization, strut-and-tie model, topology optimization
ANZSRC Field of Research 2020400510. Structural engineering
Public Notes

File reproduced in accordance with the copyright policy of the publisher/author.

Byline AffiliationsVictoria University
Victoria University of Technology
University of Sydney
University of Wollongong
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