TY - JOUR
T1 - Influence of the top reinforcement detailing in the behaviour of flat slabs
AU - Faria, Ricardo
AU - Marreiros, Rui
AU - Ramos, António Pinho
AU - Jesus, Catarina
N1 - PTDC/ECI-EST/30511/2017
PY - 2020/2/1
Y1 - 2020/2/1
N2 - This paper studies the influence of different longitudinal top reinforcement detailing on the behaviour and punching capacity of flat slabs. Experimental and numerical studies were carried out. The experimental campaign consisted in testing three reinforced concrete slabs 2.20 m wide with a thickness equal to 0.15 m. The numerical study was conducted using the non-linear finite element software ATENA 3D. Using numerical models, which were calibrated using the experimental tests, a parametric study was carried out to include other design solutions beyond the tested ones. The parameters that were changed in this parametric study were the steel reinforcement ratio, the concrete strength and the detailing of the top steel reinforcement, namely using a solution with uniform distribution and other with a higher concentration of reinforcement near the column. Finally, the results were compared with predictions obtained using some of the existing codes (Eurocode 2 and Model Code 2010). From this study it can be concluded that concentrating the top flexural reinforcement, keeping the same total amount of top longitudinal reinforcement, results in a stiffer response, an increment in the punching resistance, and a decrease in the maximum vertical displacement.
AB - This paper studies the influence of different longitudinal top reinforcement detailing on the behaviour and punching capacity of flat slabs. Experimental and numerical studies were carried out. The experimental campaign consisted in testing three reinforced concrete slabs 2.20 m wide with a thickness equal to 0.15 m. The numerical study was conducted using the non-linear finite element software ATENA 3D. Using numerical models, which were calibrated using the experimental tests, a parametric study was carried out to include other design solutions beyond the tested ones. The parameters that were changed in this parametric study were the steel reinforcement ratio, the concrete strength and the detailing of the top steel reinforcement, namely using a solution with uniform distribution and other with a higher concentration of reinforcement near the column. Finally, the results were compared with predictions obtained using some of the existing codes (Eurocode 2 and Model Code 2010). From this study it can be concluded that concentrating the top flexural reinforcement, keeping the same total amount of top longitudinal reinforcement, results in a stiffer response, an increment in the punching resistance, and a decrease in the maximum vertical displacement.
KW - Flat Slabs
KW - Numerical analysis
KW - Punching
KW - Reinforced Concrete
UR - http://www.scopus.com/inward/record.url?scp=85076847742&partnerID=8YFLogxK
U2 - 10.1016/j.istruc.2019.12.007
DO - 10.1016/j.istruc.2019.12.007
M3 - Article
AN - SCOPUS:85076847742
SN - 2352-0124
VL - 23
SP - 718
EP - 730
JO - Structures
JF - Structures
ER -