Generating optimal strut-and-tie models in prestressed concrete beams by performance-based optimization
Article
Article Title | Generating optimal strut-and-tie models in prestressed concrete beams by performance-based optimization |
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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 | 98 (2), pp. 226-232 |
Article Number | 413DF |
Number of Pages | 7 |
Year | 2001 |
Publisher | American Concrete Institute |
Place of Publication | United States |
ISSN | 0889-3241 |
1944-7361 | |
Web Address (URL) | http://www.concrete.org/PUBS/JOURNALS/OLJDetails.asp?srchtype=ALL&date=anytime&searchmonth=1&searchday=1&searchyear=2007&publication=Structural+Journal&authors=liang&volume=98&issue=2&ID=10191 |
Abstract | This paper deals with automatic generation of optimal strut-and-tie models in prestressed concrete beams by the performance-based optimization (PBO) method. In the present approach, developing strut-and-tie models in prestressed concrete members is transformed to the topology optimization problem of continuum structures. By treating prestressing forces as external loads, prestressed concrete beams can be analyzed, optimized, and dimensioned with strut-and-tie models like reinforced concrete beams. Optimal strut-and-tie models in nonprestressed, partially prestressed, and fully prestressed concrete beams are investigated by using the performance-based optimization technique. It is demonstrated that the magnitude of prestressing farces significantly affects the layouts of optimal strut-and-tie models in prestressed concrete members. The performance-based optimization method is shown to be effective in developing reliable strut-and-tie models for the design of prestressed concrete beams. |
Keywords | performance-based optimization, topology optimization, strut-and-tie models, prestressed concrete |
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 Western Sydney |
Victoria University of Technology | |
Durham University, United Kingdom |
https://research.usq.edu.au/item/9y3qv/generating-optimal-strut-and-tie-models-in-prestressed-concrete-beams-by-performance-based-optimization
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