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【单选题】
某单层单跨排架及支撑如题23图所示,柱顶与横梁铰接,柱底与基础刚接,柱高6000mm,采用 HN500×200×10×16,A=11420mm2,Ix=4.78×108mm4,ix=205mm,钢材牌号Q235-B,在排架侧边有一支撑柱,承受排架柱顶水平力,起排架的支撑作用,不承受其他荷载,支撑柱截面从可供货规格中选取,见题23表。 如此排架按强支撑考虑,其支撑柱截面应为______;按弱支撑考虑,其支撑柱截面应为 ______。此时,排架柱按稳定性计算的承载力N分别为______kN、______kN。
A.
HN600×200×11×17;HN500×200×10×16;3800,3640
B.
HN450×200×9×14;HN450×150×9×14;3200,3070
C.
HN450×200×9×14;HN400×200×8×13;2400,2391
D.
HN400×200×8×13;HN400×150×8×13;2200,2150
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