Optimal strut-and-tie models in structural concrete members
Paper
Paper/Presentation Title | Optimal strut-and-tie models in structural concrete members |
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Presentation Type | Paper |
Authors | Liang, Q. Q. (Author), Xie, Y. M. (Author) and Steven, G. P. (Author) |
Editors | Topping, B. H. V. and Kumar, B. |
Journal or Proceedings Title | Proceedings of the 7th International Conference on Civil and Structural Engineering |
Journal Citation | 1, pp. 1-8 |
Number of Pages | 8 |
Year | 1999 |
Place of Publication | Edinburgh, Scotland |
ISBN | 0948749628 |
Conference/Event | 7th International Conference on Civil and Structural Engineering: Optimization and Control in Civil and Structural Engineering |
Event Details | 7th International Conference on Civil and Structural Engineering: Optimization and Control in Civil and Structural Engineering Event Date 13 to end of 15 Sep 1999 Event Location Oxford, United Kingdom |
Abstract | The strut-and-tie modeling is a simple, unified, rational and safe approach for the design of structural concrete members. Conventional methods are not efficient in finding optimal strut-and-tie models in concrete members with complex geometry and loading conditions. In this paper, the Evolutionary Structural Optimization (ESO) method for continuum structures with displacement constraints is briefly outlined and used to develop optimal strut-and-tie models in structural concrete members. By treating prestressing forces as external loads, prestressed concrete members can be analyzed, optimized and dimensioned like reinforced concrete ones. By slowly removing a small number of elements with the least contribution to the stiffness from the discritized concrete member, the load-transferring mechanism in the member can be gradually chacreterized by the resulting topology. Numerical examples are presented to show the effectiveness of the proposed evolutionary material removal procedure in automatically generating optimal strut-and-tie models in reinforced and prestressed concrete members. Optimal strut-and-tie models obtained by using the ESO method are verified by the existing experimental evidence and analytical solutions. |
Keywords | deep beams; performance-based optimization; performance index; structural concrete; strut-and-tie models; topology optimization |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
490412. Topology | |
401706. Numerical modelling and mechanical characterisation | |
Byline Affiliations | Victoria University of Technology |
University of Sydney |
https://research.usq.edu.au/item/9y728/optimal-strut-and-tie-models-in-structural-concrete-members
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