Performance-based optimization of strut-and-tie models in reinforced concrete deep beams

Paper

Liang, Q. Q. and Ng, A. W. M.. 2008. "Performance-based optimization of strut-and-tie models in reinforced concrete deep beams." Xie, Yi Min and Patnaikuni, Indubhushan (ed.) ISEC 4: Innovations in Structural Engineering and Construction. Melbourne, Australia 26 - 28 Sep 2007 Netherlands.
Paper/Presentation Title

Performance-based optimization of strut-and-tie models in reinforced concrete deep beams

Presentation TypePaper
AuthorsLiang, Q. Q. (Author) and Ng, A. W. M. (Author)
EditorsXie, Yi Min and Patnaikuni, Indubhushan
Journal or Proceedings TitleProceedings of the 4th International Structural Engineering and Construction Conference (ISEC 4)
Journal Citation1, pp. 321-326
Number of Pages6
Year2008
Place of PublicationNetherlands
ISBN9780415457552
Web Address (URL) of Paperhttp://materialsaustralia.com.au/ISEC-4/Default.htm
Conference/EventISEC 4: Innovations in Structural Engineering and Construction
Event Details
ISEC 4: Innovations in Structural Engineering and Construction
Event Date
26 to end of 28 Sep 2007
Event Location
Melbourne, Australia
Abstract

This paper presents the performance-based optimization of strut-and-tie models in reinforced concrete deep beams. The performance-based optimization (PBO) technique combines performance-based design concepts with modern topology optimization technologies into a single scheme to automatically generate optimal designs of continuum structures. Developing strut-and-tie models in reinforced concrete deep beams is treated as a topology optimization problem of continuum structures. The optimal strut-and-tie model in a concrete deep beam is generated by gradually eliminating inefficient finite elements from the deep beam in an optimization process. Performance-based optimality criteria are incorporated in the PBO method to identify the optimum from the op-timization process. The PBO technique allows the designer to tailor the structure to a specific performance level. Two examples are provided to demonstrate the effectiveness and validity of the PBO technology in generating optimal strut-and-tie models for the design and detailing of reinforced concrete deep beams.

Keywordsreinforced concrete deep beams; performance-based optimization; strut-and-tie models; topology optimization
ANZSRC Field of Research 2020400505. Construction materials
400510. Structural engineering
490304. Optimisation
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Byline AffiliationsDepartment of Agricultural, Civil and Environmental Engineering
Victoria University
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