摘要
通过对6根足尺钢筋混凝土柱在三面受火下的试验,总结了轴心受压柱在高温下的温度场分布、试验现象、变形规律和高温后的剩余承载力。试验表明,高温下不均匀受火的钢筋混凝土轴压柱的变形规律和常温下明显不同,柱在高温下的力学性能和高温后的剩余承载力与受火时间、初始荷载水平和截面尺寸等影响因素有关,并对相关影响因素进行了对比分析,总结出了各因素的影响规律。
By use of the experimental results of 6 full-scale reinforced concrete axial compression column under elevated temperature on their three surfaces, this paper analyzed the temperature field, experiment appearance and the regularity of deformation under fire, and residual bearing capacity after fire. It is shown that regularity of deformation of the axial compression columns with non-uniform temperature filed is quiet different from those at room temperature. The regularity of deformation under fire and residual bearing capacity after fire are closely related to the burning time and pre-load level, as well as section dimension.
出处
《四川建筑科学研究》
北大核心
2008年第2期56-59,共4页
Sichuan Building Science
关键词
钢筋混凝土
轴心受压柱
高温
受力性能
剩余承载力
reinforced concrete
axial compression column
elevated temperature
behavior of bearing capacity
residual bearing capacity
