试题与答案

一无吊车工业厂房,采用刚性屋盖,跨度为15m,其铰接排架结构计算简图及所承受的荷载设

题型:单项选择题

题目:

一无吊车工业厂房,采用刚性屋盖,跨度为15m,其铰接排架结构计算简图及所承受的荷载设计值如图2-21所示。柱的截面尺寸为400mm×400mm,as=40mm,混凝土强度等级为C30,结构安全等级为二级,纵向受力钢筋为HRB335。

假定柱的轴向压力设计值N=680kN,柱的初始偏心距ei=314mm,偏心距增大系数η=1.18。试问如按对称配筋进行设计,则受压区纵筋的计算面积A’s最接近于()mm2

A.1638

B.1689

C.1743

D.1792

答案:

参考答案:A

解析:

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