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A platform for research: civil engineering, architecture and urbanism
Insulation effect on post-earthquake fire punching shear behavior of slab–column connections
This research work numerically investigates effect of insulation on the punching shear behavior of interior GFRP-reinforced slab–column connections under post-earthquake fire. Two experimental results reported in the literature were used for validation analysis using ANSYS nonlinear finite-element software program. Further, parametric studies on influential variables such as fire exposure duration, application of vermiculite gypsum insulation system, and use of GFRP stirrups around the slab–column connections were performed to get insight into performance gains of using insulation on post-earthquake fire behavior of GFRP-reinforced slab–column connections. Finite-element analysis results showed use of vermiculite gypsum insulation system improved the punching shear capacity of GFRP-reinforced slab–columns by 20.99%. Compared to the control, increasing the thickness of vermiculite gypsum insulation to 11 mm, 15 mm and 20 mm reduced heat transfer in a slab by 72.96%, 76.51% and 79.62%, respectively, whereas the unbalanced drift moment ratio was enhanced in ranges 20.14% to 20.99%. Use of vermiculite gypsum insulation system to improve post-earthquake fire shear behavior of GFRP slab–beam connection is recommended.
Insulation effect on post-earthquake fire punching shear behavior of slab–column connections
This research work numerically investigates effect of insulation on the punching shear behavior of interior GFRP-reinforced slab–column connections under post-earthquake fire. Two experimental results reported in the literature were used for validation analysis using ANSYS nonlinear finite-element software program. Further, parametric studies on influential variables such as fire exposure duration, application of vermiculite gypsum insulation system, and use of GFRP stirrups around the slab–column connections were performed to get insight into performance gains of using insulation on post-earthquake fire behavior of GFRP-reinforced slab–column connections. Finite-element analysis results showed use of vermiculite gypsum insulation system improved the punching shear capacity of GFRP-reinforced slab–columns by 20.99%. Compared to the control, increasing the thickness of vermiculite gypsum insulation to 11 mm, 15 mm and 20 mm reduced heat transfer in a slab by 72.96%, 76.51% and 79.62%, respectively, whereas the unbalanced drift moment ratio was enhanced in ranges 20.14% to 20.99%. Use of vermiculite gypsum insulation system to improve post-earthquake fire shear behavior of GFRP slab–beam connection is recommended.
Insulation effect on post-earthquake fire punching shear behavior of slab–column connections
Asian J Civ Eng
Mohammed, Tesfaye Alemu (author) / Shirtaga, Shewarega (author)
Asian Journal of Civil Engineering ; 24 ; 2505-2520
2023-11-01
16 pages
Article (Journal)
Electronic Resource
English
Post-Earthquake Fire Punching Shear Behavior of GFRP-Reinforced Slab-Column Connections
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