高温下混凝土T形柱正截面承载力分析

利用有限元软件实现了钢筋混凝土T形柱构件正截面承载力变形全过程模拟,计算结果与试验数据吻合良好,在此基础之上,将不同温度下混凝土和钢筋的本构关系代入T形柱有限元模型,重点分析了不同温度下钢筋混凝土T形柱构件的正截面承载能力和变形能力,初步研究了火灾对混凝土T形柱构件正截面承载能力的影响,为异形柱构件耐火性能研究提供了依...

Study on normal section bearing capacity of concrete T-shaped columns under high temperature

The normal section bearing capacity-deformation curve of reinforced concrete T-shaped columns was simulated by finite element software,and the result was in good agreement with the test data.On this basis,the constitutive relation of reinforcingbar and concrete at different temperature were introduced into the T-shaped columns model,the normal section bearing capacity and deformation capacity of T-shaped columns at different temperatue were analyzed,and the influence of fire on normal section bearing capacity of reinforced concrete T-shaped columns was preliminary studied,which provide foundation for fire resistance of sepcially shaped columns.