钢筋混凝土受弯构件压区受高温影响的非线性分析

THE NONLINEAR ANALYSIS OF REINFORCED CONCRETE BENT MEMBER EXPOSED TO ELEVATED TEMPERATURE IN COMPRESSIVEAREA

本文利用高温时混凝土的应力一应变关系及在高温时与常温时的混凝土力学指标之间的关系，对钢筋混凝土受弯构件的受力性能进行了非线性分析。并讨论了温度对截面屈服弯矩、曲率等的影响．分析表明，由于高温时混凝土的软化，钢筋混凝土受弯构件的变形性能发生显著变化。

in this paper,the nonlinear analysis is done to research the behavior of reinfored concrete bent member at high temperature.By comparing the stress-strain relationship and concrete mechanical characters at normal and high tempereture, the effect of high temperated on yield moment and curvature of section have been discussed, Analysing results show that the deformability of renforced concrete bent member has a remarkable change due to the softening of concrete at high temperature.