A novel strategy for the crossarm length optimization of PSSCs based on multi-dimensional global optimization algorithms

•A novel optimization method of determining the optimal crossarm length of PSSC.•The method overcomes the drawbacks in the gradient-based optimization algorithm.•A comparison for the optimal PSSCs with different kinds of variables was performed. Prestressed stayed steel columns (PSSCs) offer a light...

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Veröffentlicht in:Engineering structures Jg. 238; S. 112238
Hauptverfasser: Li, Pengcheng, Wang, Hao
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Kidlington Elsevier Ltd 01.07.2021
Elsevier BV
Schlagworte:
Algorithms
Bearing strength
Buckling load
Carrying capacity
Compression
Crossarm length
Design optimization
Genetic algorithms
Global optimization
Load carrying capacity
Multi-population genetic algorithm
Optimization algorithm
Optimization algorithms
Population genetics
PSSC
Steel columns
Buckling load
Optimization algorithm
Multi-population genetic algorithm
PSSC
Crossarm length
ISSN:0141-0296, 1873-7323
Online-Zugang:Volltext
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Zusammenfassung:•A novel optimization method of determining the optimal crossarm length of PSSC.•The method overcomes the drawbacks in the gradient-based optimization algorithm.•A comparison for the optimal PSSCs with different kinds of variables was performed. Prestressed stayed steel columns (PSSCs) offer a lightweight alternative for the design of slender compression columns. The stability of compression columns can be significantly enhanced by introducing crossarms. Previous research on this subject has primarily focused on load-carrying capacity estimation or analyses of the influencing factors of PSSCs. Thus, investigations of the design optimization of PSSCs remain scant. This work proposes a novel strategy for crossarm length optimization of PSSCs based on multi-dimensional global optimization algorithms. A multi-population genetic algorithm is introduced in the optimization process. The proposed optimization algorithm was demonstrated to be efficient and accurate in terms of determining the optimal crossarm length of PSSCs.
Bibliographie:ObjectType-Article-1
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ISSN:0141-0296
1873-7323
DOI:10.1016/j.engstruct.2021.112238