Under The Coupled Action Of Fire And Load Of Reinforced Concrete Beam-Column Transfer Structure’s Node Deformation And Bearing Capacity Analysis

With the construction of multi-functional development trend, the conversion structure in large numbers. Reinforced concrete beam column transfer structure is one of the commonly used structure conversion. Since the conversion structure plays a key role in connecting its security is critical in the case of fire, the fire resistance of the relevant research has important theoretical and practical significance. In this paper, reinforced concrete beam column transfer structure node model, the temperature distribution by action under fire, the thermal coupling aspect of the deformation characteristics and under the joists sectional refractory ultimate flexural capacity were analyzed main research work as follows:1. The use of software, based on the standard temperature curve of reinforced concrete beam column transfer structure node model was different temperature field by the fire condition analysis to study the variation of temperature measurement points within the model at the time over heating.2. The use of software, the beam column transfer structure node model on three sides by fire and surrounded by the fire conditions to Standard Calculation and deformation under load coupling to give the curve displacement node model of each observation point with the warming time Comparative analysis of the deformation of different operating conditions by the fire.3. Based on the equivalent section method, a three-level model, the formulas for calculating three different fire conditions by reinforced concrete joists ultimate flexural capacity. One condition for the fire that analyzes the deterioration law joists ultimate flexural capacity being raised over time; warmed by the fire in time 60min example to analyze the joists sectional longitudinal reinforcement rate of change of the joists ultimate flexural bearing capacity.