钢筋混凝土梁在火侵袭下的反应分析

结构物在大火侵袭下，结构内部温度和结构挠度、内力将随时间发生不断变化，这种变化极为复杂。本文在试验研究的基础上，采用非线性有限元法，着重研究钢筋混凝土梁在火侵袭作用下其温度和挠度的反应，提出了一种理论分析方法，编制了计算机程序，对钢筋混凝土梁的温度、挠度和内力的反应进行了计算，并得到试验结果的验证。

Response Analysis of Reinforced Concrete Beam Exposed to Fire Loads

When building structures expose to fire loads,structural temperature,deflection and interior force will result in contimual changes, which is rather complicated.On basis of fire test research,the reinforced concrete beam exposed to fire loads and the calculation method of responses of temperature arid deflection are analytically studied in this paper.A theoretic analysis method is put forward and a computer program is developed by using nonlinear FEM,which is used to calculate thermal and structureal responses of reinforced concrete beams exposed to fire loads and verified against test data.