保护层厚度对高温下钢柱稳定性的影响

Influence of protective layer thickness on the compression steel bar stability under high temperature

以一端铰支、一端固定的钢结构压杆作为研究对象,研究高温下保护层厚度不同的轴心受压杆件的整体稳定性。基于ANSYS有限元软件,讨论不同保护层厚度对高温下压杆稳定性的影响,分析随着受火时间和环境温度的变化,不同保护层厚度下的受压杆件内部温度场的变化规律,并对不同的保护层厚度下,受压构件钢柱的整体稳定性和屈曲荷载系数进行研究。

Taking the steel structure pressure bar with one end hinged and one end fixed as the research object, the overall stability of axial compression member with different protective layer thickness at high temperature were studied. Based on the finite element software ANSYS, the influence of protective layer thickness on the stability of the pressure bar under high temperature was discussed. The changes of temperature inside the pressure bar under different fire time and environment tempera ture were analyzed. The overall stability and buckling load factor under different protective layer thickness were studied.