Abstract: In order to study the influence of reinforcement ratio, temperature curve, surface by the fire and the heat transfer coefficient on the reinforced concrete shear wall temperature field, by the more physical fields modeling and simulation software COMSOL, the temperature field of reinforced concrete shear walls under fire was simulated. The temperature field of shear wall under different factors was obtained and the results were in good agreement with the test results. The influence of various parameters on the temperature field was discussed. The results showed that the longer the fire duration, the higher the temperature of reinforced concrete shear wall. Compared with reinforcement ratio and aggregate type, the influence of different heating rates on the temperature field of reinforced concrete shear wall is more significant. The concrete reinforcing bars at the edge of reinforced concrete shear wall also has obvious influence on its temperature field. In addition, the temperature values of the core areas of the single- side and three- side fire reinforced concrete shear walls are close, and the core temperatures of the double- side and four- side fire reinforced concrete shear walls are close. In the heat transfer coefficient of the fire surface, the influence of the comparative convection coefficient and the comprehensive radiation coefficient on the heat transfer is significant. When the temperature is greater than a certain degree and the radiation coefficient is greater than 0.7, the influence of the convection coefficient on the heat transfer is negligible.

Key words: reinforced concrete, shear wall, temperature field;numerical simulation