题目内容
(请给出正确答案)
[单选题]
已知底层柱的下端截面考虑地震作用组合后的弯矩设计值为M=300kN·m,轴力设计值为N =1200kN,计算长度为6m,则对该柱进行正截面承载力计算时得到的偏心距增大系数η与下列______项数值最为接近。
A.1.09
B.1.18
C.1.14
D.1.23
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A.1.09
B.1.18
C.1.14
D.1.23
A.208
B.211
C.223
D.232
A.0.358mm
B.0.526mm
C.1.151mm
D.0.425mm
A.300.2kN·m,311.8kN·m
B.250kN·m,260kN·m
C.311.8kN·m,300.2kN·m
D.330.5kN·m,300.2kN·m
A.14700
B.19600
C.45000
D.53000
A.14700
B.19600
C.47000
D.53000
A.1.23mm
B.1.00mm
C.1.15mm
D.1.26mm
A.1.23mm
B.1.00mm
C.1.15mm
D.1.26mm
A.①②
B.①③④
C.②③④
D.③④
A.1610
B.1750
C.1820
D.1930