Mechanical response of local rapid cooling by spray water on constrained steel frame structure at high temperature in fire
School of Civil Engineering, Anhui Jianzhu University, Hefei, 230022 P.R. China
a Corresponding author: firstname.lastname@example.org
Locally rapid cooling of spray water had strong impact on high temperature steel structure. When temperature of beam reached 600°C and cooling rate was more than 20°C/s, the maximum axial tension could reach more than 5 times of the originally compressive force. The compressive bending moment at joint of beam-to-column changed to tensile bending moment, and the maximum bending moment could reach above 4 times as that when heated. After rapid cooling by spray water, deflection at mid-span increased slightly.
© Owned by the authors, published by EDP Sciences, 2015
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