SCALE THEORY RESEARCH OF RC STRUCTURAL FIRE-RESISTANCE EXPERIMENT AND INSTANCE ANALYSIS

摘要

At present, most of the reduced scale structural fire-resistance experiments only consider the scaling relationship of geometry and load, and few takes the scaling relationship of thermal into consideration.The scale structure with a not scaled fire leads to an increase on fire damage.So the scale experiments nowadays can only reflect the fire response of the prototype structure qualitative but not quantitative, sometimes even worse.This paper introduces the scale theory concerning the thermal dimension briefly and presents three models for calculating the temperature curves of gas in the scale experiments.The 'equivalent temperature curves' for scale experiments are designed by applying the three models respectively.And then, the temperature distribution between prototype structure with prototype fire and scaled structure with 'equivalent temperature curves' which are computed using ABAQUS.are compared.The analyzing of the results recommends the Model 3 and the feasibility and effectiveness of the scale theory are checked with Model 3.