Constructing parametric model of temperature elevation in fire consists two parts

one is to determine the time of temperature elevation and the another one is to determine function relation of temperature elevation process.Temperature elevation time is a stochastic variable and temperature elevation process is a stochastic process.Probability density function is complex and it is hard to derive temperature elevation time

probability distributing type and probability characteristic by resolution method.In this paper

based on Monte Carlo simulation and numerical method

the characteristics of temperature-time process are studied.The probabilistic model of duration of heating phase is put forward

and the probabilistic characteristics of the temperature-time process are also given.Computer zone model is adopted to verify the results produced by the model.