The Temperature Field And Bearing Behavior Research Of Girder Transfer Floor On Fire

Reinforced concrete Girder Transfer Floor structures are widely used at present. Lots of experts and scholars at home and abroad have studied its mechanical properties and the structure form, but the research of the fire resistance is still rare. This kind of research is very important to the safety of life and property. In this paper, the fire resistance of girder transfer floor structure are analyzed in theory, and mainly includes several aspects:Using ABAQUS, the nonlinear finite element analysis software, based on the ISO834standard fire curve, the heat transfer of two kinds of girder transfer floor structure models are analyzed. The internal temperature field distribution of framework in different time and the temperature and time relation curve of measuring points are obtained.Based on standard fire curve, the three sides of beam on fire. By using the500℃,300℃and800℃isotherm to simplify the sections, the bearing capacity of Joist are calculated.Based on the ISO834standard fire curve, using the ABAQUS nonlinear finite element analysis software, the two kinds of girder transfer floor structure models are analyzed. The internal force and redistribution of internal force of the structure are obtained.