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Dimensioning of partially prestressed concrete beams, optimization of T-shaped section with heels
https://orcid.org/0000-0003-2339-3962
Highlights New dimensional approach for full and partial prestressed concrete beams. Crack width limitation transformed into steel stress limitation as per Eurocodes. Permissible domain in full and partial prestressing defined in (P,M) plane. Genetic Algorithm optimization using penalized objective functions, coded on scilab. Optimization of a VIPP prestressed concrete bridge, Tee section with heels.
Abstract The present article addresses the structural optimization of partially and fully prestressed concrete bridge girders. For this purpose, an optimization-oriented dimensioning approach for prestressed concrete is proposed in accordance with the Eurocode 2 provisions, it combines all service and ultimate limit states verifications in a coherent manner. An optimization procedure, based on Genetic Algorithms, is conducted on a T-shaped section with heels, with the total cost as the objective function. The design variables are the cross-sectional dimensions, the steel reinforcement and quantity and configuration of prestressing tendons. The constraints include geometrical restraints and verifications under ultimate and service limit states. Numerical examples are implemented to demonstrate the performance and effectiveness of this method, and the results obtained are discussed with final remarks and conclusions.
Dimensioning of partially prestressed concrete beams, optimization of T-shaped section with heels
https://orcid.org/0000-0003-2339-3962
Highlights New dimensional approach for full and partial prestressed concrete beams. Crack width limitation transformed into steel stress limitation as per Eurocodes. Permissible domain in full and partial prestressing defined in (P,M) plane. Genetic Algorithm optimization using penalized objective functions, coded on scilab. Optimization of a VIPP prestressed concrete bridge, Tee section with heels.
Abstract The present article addresses the structural optimization of partially and fully prestressed concrete bridge girders. For this purpose, an optimization-oriented dimensioning approach for prestressed concrete is proposed in accordance with the Eurocode 2 provisions, it combines all service and ultimate limit states verifications in a coherent manner. An optimization procedure, based on Genetic Algorithms, is conducted on a T-shaped section with heels, with the total cost as the objective function. The design variables are the cross-sectional dimensions, the steel reinforcement and quantity and configuration of prestressing tendons. The constraints include geometrical restraints and verifications under ultimate and service limit states. Numerical examples are implemented to demonstrate the performance and effectiveness of this method, and the results obtained are discussed with final remarks and conclusions.
Dimensioning of partially prestressed concrete beams, optimization of T-shaped section with heels
https://orcid.org/0000-0003-2339-3962
Highlights New dimensional approach for full and partial prestressed concrete beams. Crack width limitation transformed into steel stress limitation as per Eurocodes. Permissible domain in full and partial prestressing defined in (P,M) plane. Genetic Algorithm optimization using penalized objective functions, coded on scilab. Optimization of a VIPP prestressed concrete bridge, Tee section with heels.
Abstract The present article addresses the structural optimization of partially and fully prestressed concrete bridge girders. For this purpose, an optimization-oriented dimensioning approach for prestressed concrete is proposed in accordance with the Eurocode 2 provisions, it combines all service and ultimate limit states verifications in a coherent manner. An optimization procedure, based on Genetic Algorithms, is conducted on a T-shaped section with heels, with the total cost as the objective function. The design variables are the cross-sectional dimensions, the steel reinforcement and quantity and configuration of prestressing tendons. The constraints include geometrical restraints and verifications under ultimate and service limit states. Numerical examples are implemented to demonstrate the performance and effectiveness of this method, and the results obtained are discussed with final remarks and conclusions.
Dimensioning of partially prestressed concrete beams, optimization of T-shaped section with heels
Abdel Nour, Nadim (author) / Vié, Dominique (author) / Chateauneuf, Alaa (author) / Amziane, Sofiane (author) / Kallassy, Assad (author)
Engineering Structures ; 235
2021-02-09
Article (Journal)
Electronic Resource
English
Dimensioning of prestressed concrete structures
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Design of partially prestressed concrete beams
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Fatigue tests on partially prestressed concrete beams
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Shear Resistance of Partially Prestressed Concrete Beams
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Flexural behavior of prestressed, partially prestressed, and reinforced concrete beams
| Engineering Index Backfile | 1966