火炬塔架钢管径厚比限值讨论

Discussion on Circular Steel Tube Diameter-Thickness Ratio of Torch Tower

我国对钢结构局部稳定宽厚比限值做出规定的规范主要有:《钢结构设计规范》和《建筑抗震设计规范》,两种规范对局部稳定宽厚比分别做出限定,限值规定相差很大,但并没有对限值的采用做出明确解释。文章以石油化工钢管火炬塔架的径厚比为例,通过国内外规范及文献对钢管径厚比规定的对比分析,指出我国规范对钢结构局部稳定径厚比规定与国外的差距,规范对普通钢管结构的径厚比限值有待进一步研究。

The main standards about local buckling width-thickness ratio in China are 《Code for design of steel structures）and （Code for seismic design of buildings》 . The local buckling width-thickness ratios of two codes are different. This paper reviews the Chinese and foreign codes about the circular steel tube diameter thickness ratios. It has pointed out that there are difference between Chinese and foreign codes. The diameter thickness ratios of normal circular steel tube structures especially torch tower should be given further research.