摘要
为研究不同牌号角钢和钢管在变电构架中的适用范围,应用有关规范对Q235~Q420轴心受压角钢和钢管、单向偏心受压钢管以及纯弯钢管的承载力比值进行了大量计算分析。结果表明:相对于一般规格轴心受压Q235角钢和钢管,Q345,Q390,Q420钢材的长细比经济适用范围分别为λ≤100,λ≤110和λ≤120;相对于一般规格轴心受压Q345角钢和钢管,Q390和Q420钢材的长细比经济适用范围分别为λ≤40和λ≤70;高强钢应用于单向压弯钢管和纯弯钢管时,其经济性能将得以充分发挥。
To study the applicability of Q235 - Q420 angle steels and steel pipes in substation frame, the load carrying capacity ratio of Q235 - Q420 axial compressive angle steels and steel pipes, eccentrically loaded and pure bending steel pipes were analyzed according to some relevant standards. Four kinds of steels have been considered: Q235, Q345, Q390, Q420. The results show that relative to general Q235 axial compressive angle steels and steel pipes,economic application scope of slenderness ratio for Q345, Q390 and Q420 steel are λ≤100,λ≤110 and λ≤120 respectively. Relative to general Q345 axial compressive angle steels and steel pipes, economic application scope of slenderness ratio for Q390 and Q420 are λ≤40 and λ≤70 respectively. Good economic results will be obtained for high strength steels used in eccentrically loaded and pure bending steel pipes.
出处
《四川建筑科学研究》
北大核心
2011年第6期303-306,共4页
Sichuan Building Science
关键词
变电构架
高强钢材
角钢和钢管
长细比分析
substation frame
high strength steel
angle steel and steel pipe
analysis of slenderness ratio