Topology optimization of strut-and-tie models in reinforced concrete structures using an evolutionary procedure
Article
Article Title | Topology optimization of strut-and-tie models in reinforced concrete structures using an evolutionary procedure |
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ERA Journal ID | 4142 |
Article Category | Article |
Authors | Liang, Qing Quan (Author), Xie, Yi Min (Author) and Steven, Grant P. (Author) |
Journal Title | ACI Structural Journal |
Journal Citation | 97 (2), pp. 322-330 |
Number of Pages | 9 |
Year | 2000 |
Publisher | American Concrete Institute |
Place of Publication | USA |
ISSN | 0889-3241 |
1944-7361 | |
Web Address (URL) | http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP |
Abstract | This paper presents a performance based evolutionary topology optimization method for automatically generating optimal strut-and-tie models in reinforced concrete structures with displacement constraints. In the proposed approach, the element virtual strain energy is calculated for element removal, while a performance index is used to monitor the evolutionary optimization process. By systematically removing elements that have the least contribution to the stiffness from the discretized concrete member, the load transfer mechanism in the member is 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 displacements are within acceptable limits. Several examples are provided to demonstrate the capability of the proposed method in finding the actual load transfer mechanism in concrete members. It is shown that the proposed optimization procedure can produce optimal strut-and-tie models that are supported by the existing analytical solutions and experimental evidence, and can be used in practice, especially in the design of complex reinforced concrete members where no previous experience is available. |
Keywords | Corbels, deep beams, performance, performance-based optimization, reinforced concretes, topology optimization |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Public Notes | Copyright permission and Published version supplied by Publisher. |
Byline Affiliations | University of Western Sydney |
Victoria University of Technology | |
University of Sydney |
https://research.usq.edu.au/item/9y508/topology-optimization-of-strut-and-tie-models-in-reinforced-concrete-structures-using-an-evolutionary-procedure
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