rs 750 (70 g
rsr
0.8856451.5
31.62
) 664.2mm
L0/D
30
h0 r rs 1414.2mm
2
1
11400e0/h0
(L0/D) 1 2
1 0.2 2.7e0/h0 1.86 1 1 2 1.15 0.01L0/D 0.85 1
'
1
1400 1360/1414.2
(30) 1 0.85 1.88
2
e0 e0 1.88 871.78 1644.54
设 值
=0.4
fcdf'sd
2
Ae'0 BrDgr Ce'0
2
0.0206
Ndu Arfcd Cprf'sd 4063.81 Ndu/ 0Nd 1.005
轴向力设计值与实际值基本相等,所得配筋率 0.0206即为所求。 所需钢筋的截面面积为:A r 0.04 3.14 750 3638.75mm
2
选56 46(40.2mm)。As 38680.2mm,rs 750 (70
22
40.52
) 660mm