Simplified conditions of elevated temperature for structural members based on field model

The method to calculate the smoke temperature in large space buildings fire based on field model was simplified according to the analysis of influence parameters of smoke temperature elevation.The formulas to calculate the flame height and the smoke temperature in large space building were put forward based on the compare of relative formulas in code internal or overseas.The key parameters to affect the height of firewere diameter of fire source and the Hear Release Rate per unit.It is more safety to calculate the flame height in large space building by suggested formula.