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

Liang, Q. Q. and Ng, A. W. M. (2008) Performance-based optimization of strut-and-tie models in reinforced concrete deep beams. In: ISEC 4: Innovations in Structural Engineering and Construction, 26-28 Sep 2007, Melbourne, Australia.

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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.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Publisher retains copyright of this paper.
Depositing User: Dr Stephen Liang
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 08 Jan 2008 01:53
Last Modified: 02 Jul 2013 22:51
Uncontrolled Keywords: reinforced concrete deep beams; performance-based optimization; strut-and-tie models; topology optimization
Fields of Research (FOR2008): 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
01 Mathematical Sciences > 0103 Numerical and Computational Mathematics > 010303 Optimisation
Socio-Economic Objective (SEO2008): B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials
URI: http://eprints.usq.edu.au/id/eprint/3284

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