RESEARCH ON CALCULATION METHOD OF LOADED COMPRESSION MEMBER OF SINGLE-LIMB FIRE-CURVED EQUILATERAL DOUBLE SPLICING T-SHAPED ANGLE STEEL

In this paper, loaded compression member of single-limb fire-curved equilateral double splicing T-shaped angle steel is compared with the calculation value of the bearing capacity of ordinary double-angle steel members in relevant domestic and foreign codes. When the slenderness ratio of members is large, the value obtained according to the steel structure design standard (GB 50017-2017) is closer to the test result. Based on the steel structure design standard (GB 50017-2017), the stability calculation method of axial compression members is presented in this paper. And based on the results of test and finite element analysis, the calculation formula of axial bearing capacity of single leg fire curved equal edge double splicing T-shaped angle steel members is modified. The calculation reduction coefficient of loaded compression member of single-limb fire-curved equilateral double splicing Tshaped angle steel is proposed. The revised calculation results of the axial bearing capacity of the members are in good agreement with the test results, which verifies the rationality of the formula.