加载火烧后的钢筋混凝土梁受力性能的试验研究

Experimental study of loaded reinforced concrete beams exposed to high heat due to a fire

本文通过加载火烧后的钢筋混凝土简支梁的试验,对其受力性能、极限荷载、裂缝及变形等问题进行了分析研究,指出火烧温度是影响钢筋混凝土结构受力性能的主要因素,当混凝土内的火烧温度超过600℃时,其承载能力将大幅度下降。

In this paper, the behaviour of loaded beam, the ultimate load, the crack and the deformation are studied through the tests of loaded reinforced concrete beams exposed to high heat due to a fire. It is shown that the main factor that affacts the mechanical behaviour of reinforced concrete beams is the temperature. When the temperature of the heated concrete exceeds 600℃, there will be a remarkable reduction of the load-bearing capacity.