Research on Fire Resistance and Fire Resistance Protection Methods of Corrugated Steel Web Frame
In order to study the fire resistance and fire resistance protection methods of corrugated steel web frame,an ABAQUS finite element model of corrugated steel web frame under fire was established,and the accuracy of the model was verified.The fire resistance limit under different load ratios was obtained.It was found that it did not meet the requirements of Class Ⅰ/Ⅱ of the national specification.On this basis,the effect of the thickness of thick fireproof coating on their fire resistance performance was investigated,and the results showed that when the column load ratio is 0.4,compared with the corrugated steel web frame without coating,when the coating thickness is 7 mm～9 mm,the fire resistance limit of the corrugated steel web beam is increased by 2.2～2.7 times,the fire resistance limit of the corrugated steel web column is increased by at least 1.5 times,and the fire resistance time reaches 3 hours without damage.When the thickness of the fireproof coating of the corrugated steel web beam and column is the same,and under the same load ratio,the improvement effect of the fire resistance limit of the corrugated steel web beam is more obvious than that of the corrugated steel web column.
corrugated steel webfinite element simulationfire resistance limitframe fire resistancefire retardant coatings
NETL
NSTL
万方数据
