Performance-based optimization for strut-tie modeling of structural concrete
Article
Article Title | Performance-based optimization for strut-tie modeling of structural concrete |
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ERA Journal ID | 36383 |
Article Category | Article |
Authors | Liang, Qing Quan (Author), Uy, Brian (Author) and Steven, Grant P. (Author) |
Journal Title | Journal of Structural Engineering |
Journal Citation | 128 (6), pp. 815-823 |
Number of Pages | 9 |
Year | 2002 |
Place of Publication | United States |
ISSN | 0733-9445 |
1943-541X | |
Digital Object Identifier (DOI) | https://doi.org/10.1061/(ASCE)0733-9445(2002)128:6(815) |
Web Address (URL) | http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JSENDH000128000006000815000001&idtype=cvips |
Abstract | [Abstract]: Conventional trial-and-error methods are not efficient in developing appropriate strut-and-tie models in complex structural concrete members. This paper describes a performance-based optimization (PBO) technique for automatically producing optimal strut-and-tie models for the design and detailing of structural concrete. The PBO algorithm utilizes the finite element method as a modeling and analytical tool. Developing strut-and-tie models in structural concrete is treated as an optimal topology design problem of continuum structures. The optimal strut-and-tie model that idealizes the load transfer mechanism in cracked structural concrete is generated by gradually removing regions that are ineffective in carrying loads from a structural concrete member based on overall stiffness performance criteria. A performance index is derived for evaluating the performance of strut-and-tie systems in an optimization process. Fundamental concepts underlying the development of strut-and-tie models are introduced. Design examples of a low-rise concrete shearwall with openings and a bridge pier are presented to demonstrate the validity and effectiveness of the PBO technique as a rational and reliable design tool for structural concrete. |
Keywords | performance-based optimization, topology optimization, strut-and-tie models, structural concrete, finite element analysis |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of New South Wales |
Durham University, United Kingdom |
https://research.usq.edu.au/item/9y3q9/performance-based-optimization-for-strut-tie-modeling-of-structural-concrete
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