Research On The Shear Capacity Of Reinforced Concrete Beams In Fire

With steel and concrete exposed to fire performance degradation will result in reduced carrying capacity of building structures, therefore, to carry out bearing capacity by building structures exposed to fire research has important practical significance. In this paper, on the basis of analyzing the existing relevant research materials, mainly aimed at research for the ultimate bearing capacity under high temperature and shear load coupling of reinforced concrete beams,and calculating theory is based on shear capacity of reinforced concrete beams at room temperature, to explore the establishment high temperature by the fire RC beams practical formula shear strength.1. Summarizes the theory steel and concrete materials at home and abroad in the relevant research results at a high temperature and the performance of reinforced concrete beam at room temperature Shear bearing capacity.2. Based on the international standard ISO834 temperature curve, by ABAQUS finite element analysis software for reinforced concrete beam on one side, three sides and surrounded sides by the simulation under fire, and summarize the distribution of the temperature field.3. Based on the equivalent section method and learn reinforced concrete beam at room temperature Shear Strength formulas, Formula for calculating the shear capacity of reinforced concrete beams subjected to fire and load coupling effect.4. With specific examples, based on the analysis of reinforced concrete beam shear and flexural ultimate bearing capacity, discusses the variation were based on Shear, Bending Beam ultimate load bearing capacity.