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A platform for research: civil engineering, architecture and urbanism
Genetic Optimization of Void Formers for Biaxial Voided Concrete Slabs
https://orcid.org/http://orcid.org/0009-0002-9894-3498
https://orcid.org/http://orcid.org/0009-0007-9209-5279
https://orcid.org/http://orcid.org/0000-0003-1113-1842
In biaxial voided concrete slabs, void formers displace the concrete in those areas of a reinforced concrete slab where it makes only a minor contribution to the load-bearing capacity. This results in reduced material consumption and associated greenhouse gas emissions. While the flexural strength of a reinforced concrete slab is generally unaffected by the void formers, the shear strength is reduced compared to the shear strength of a solid slab. The advantages of structures with void formers can be further exploited by optimizing the geometry of the void formers to maximize the reduction of concrete volume while minimize the reduction of the load-bearing capacity. The objective of this research is to develop optimized void formers for different combinations of shear forces and bending moments, which may be arranged according to the stress, thus minimizing the total volume of concrete used. The optimization is achieved by genetic programming combined with nonlinear finite element analyses. The results of the optimization runs are presented and transferred to an application example of a representative concrete foundation slab. Finally, the effect of applying different void formers with optimized geometries on the possible volume reduction is emphasized.
Genetic Optimization of Void Formers for Biaxial Voided Concrete Slabs
https://orcid.org/http://orcid.org/0009-0002-9894-3498
https://orcid.org/http://orcid.org/0009-0007-9209-5279
https://orcid.org/http://orcid.org/0000-0003-1113-1842
In biaxial voided concrete slabs, void formers displace the concrete in those areas of a reinforced concrete slab where it makes only a minor contribution to the load-bearing capacity. This results in reduced material consumption and associated greenhouse gas emissions. While the flexural strength of a reinforced concrete slab is generally unaffected by the void formers, the shear strength is reduced compared to the shear strength of a solid slab. The advantages of structures with void formers can be further exploited by optimizing the geometry of the void formers to maximize the reduction of concrete volume while minimize the reduction of the load-bearing capacity. The objective of this research is to develop optimized void formers for different combinations of shear forces and bending moments, which may be arranged according to the stress, thus minimizing the total volume of concrete used. The optimization is achieved by genetic programming combined with nonlinear finite element analyses. The results of the optimization runs are presented and transferred to an application example of a representative concrete foundation slab. Finally, the effect of applying different void formers with optimized geometries on the possible volume reduction is emphasized.
Genetic Optimization of Void Formers for Biaxial Voided Concrete Slabs
https://orcid.org/http://orcid.org/0009-0002-9894-3498
https://orcid.org/http://orcid.org/0009-0007-9209-5279
https://orcid.org/http://orcid.org/0000-0003-1113-1842
In biaxial voided concrete slabs, void formers displace the concrete in those areas of a reinforced concrete slab where it makes only a minor contribution to the load-bearing capacity. This results in reduced material consumption and associated greenhouse gas emissions. While the flexural strength of a reinforced concrete slab is generally unaffected by the void formers, the shear strength is reduced compared to the shear strength of a solid slab. The advantages of structures with void formers can be further exploited by optimizing the geometry of the void formers to maximize the reduction of concrete volume while minimize the reduction of the load-bearing capacity. The objective of this research is to develop optimized void formers for different combinations of shear forces and bending moments, which may be arranged according to the stress, thus minimizing the total volume of concrete used. The optimization is achieved by genetic programming combined with nonlinear finite element analyses. The results of the optimization runs are presented and transferred to an application example of a representative concrete foundation slab. Finally, the effect of applying different void formers with optimized geometries on the possible volume reduction is emphasized.
Genetic Optimization of Void Formers for Biaxial Voided Concrete Slabs
Lecture Notes in Civil Engineering
Barros, Joaquim A. O. (editor) / Cunha, Vítor M. C. F. (editor) / Sousa, Hélder S. (editor) / Matos, José C. (editor) / Sena-Cruz, José M. (editor) / Schmidt, Thilo (author) / Walsemann, Clara (author) / Albert, Andrej (author)
FIB International Conference on Concrete Sustainability ; 2024 ; Guimarães, Portugal
4th fib International Conference on Concrete Sustainability (ICCS2024) ; Chapter: 22 ; 177-185
2024-12-29
9 pages
Article/Chapter (Book)
Electronic Resource
English
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