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Insulation Effect on Post-earthquake Fire Punching Shear Behavior of Slab–column Connections by Tesfaye Alemu Mohammed; Shewarega Shirtaga is a Engineering article available to read on EtoBox.

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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-

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Author

Tesfaye Alemu Mohammed; Shewarega Shirtaga

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Engineering (Physical Sciences)