Reinforced Concrete Beam Flexural Capacity Theory In High Temperature

Along with social progress and technological development, civil engineering structural system is moving more and higher direction。However, as a kind of disaster-fire, but still all the time the threat to human security, but also the threat to the safety of buildings. At this stage is still widely used as a reinforced concrete structure subjected to fire, the probability of invasion than other types of buildings. Therefore, it is necessary to make an accurate calculationt to the reinforced concrete structures in fire behavior and judgments, in order to avoid the failure and maintain the system performance. However, direct use of the components and structure of the previous cognitive testing methods, but also requires a lot of equipment, space and human resources. If we can establish a simulation analysis, future research will be significant savings in the cost of research.To this end, the reinforced concrete beam in the process of warming by the fire in the calculation of flexural capacity of the theory on the question of analysis and research, the following key elements:(1) The existing experimental data and content at domestic and abroad to conclude and find out more mature data, theories and methods to make the necessary sum. Especially for steel and concrete materials, the two main characteristics of the thermal performance to be improved.(2) The use of today's most common simulation software (ANSYS) to fire the members section of temperature field during the simulation, and with existing experimental data for comparison, demonstrate the feasibility of simulation. On this basis, the component of the other conditions (size, time, etc.) to change, get a different form of the component factors affecting the temperature field and the impact.(3) The finite element method and further analysis on the temperature distribution obtained, the use of norms and a variety of capacity calculation given in the literature, analysis of components at different stages of heating on the bending capacity in the changes.(4) With the results of this study, the next step of the research methods and qualitative trends suggested.