The Shear Bearing Capacity Analysis And Simplified Calculation Of Reinforced Concrete Beam On Fire

Currently, under the fire of reinforced concrete beam flexural capacity of more research, and few studies RC Beams bearing performance under the fire. To ensure the safety of reinforced concrete flexural members work under fire, reduce fire losses, determine ultimate shear capacity of members under fire is very important. In this paper, oblique section bearing capacity of reinforced concrete beams under fire study to shear reinforced concrete members for the study, by oblique section bearing capacity of reinforced concrete beams under fire effects analysis to explore the reinforced concrete under fire Beams calculation method of flexural capacity. The main contents are as follows:1.Analysis and summary about the domestic and foreign steel and concrete materials main achievements of the mechanical and physical properties at high temperatures, as the basis for selecting an appropriate analysis of this paper to calculate the required parameters.2.Based ISO834standard temperature curve, by ABAQUS finite element analysis software for the temperature field of reinforced concrete beam sections were side, and surrounded on three sides by fire simulation analysis, summarized the distribution of temperature field.3.Based on the equivalent section method, and draw diagonal shear capacity of reinforced concrete beams at room temperature formula, the calculation method under Shear strength of reinforced concrete beams fire, and model calculations with ABAQUS analysis results are compared.