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基于ANSYS的有限元数值计算,考查了简支波纹腹板钢梁在火灾作用下的侧向弯扭屈曲。通过与平腹板钢梁的临界温度作比较,研究了波纹腹板钢梁分别在纯弯矩和集中载荷作用下的抗火性能,并分析了栽荷比、初始缺陷等因素对波纹腹板钢梁抗火性能的影响。分析表明,波纹腹板钢梁与平腹板钢梁在火灾作用下有相同的侧向弯扭屈曲性能。
Based on the finite element numerical calculation of ANSYS, the lateral flexural and torsional buckling of simply supported corrugated web steel beam subjected to fire was investigated. By comparing with the critical temperature of flat web steel beam, the anti-fire performance of corrugated web steel beam under pure bending moment and concentrated load respectively is studied. The effect of load-to-charge ratio, initial defect and other factors on the corrugated web Influence of fire resistance of steel beam. The analysis shows that the corrugated web steel beam and the flat web steel beam have the same lateral flexural and torsional buckling behavior under fire.