面积A=bh = mm²

轴压比=N0/fcA =

γRE(轴压比<0.15,0.75,0.8) =

M=M0*γRE = kN-m
N=N0*γRE = kN

h0=h-as = mm

初始偏心距e0=M/N = mm
附加偏心距ea=Max(20,h/30) = mm
初始偏心距ei=e0+ea = mm

ζ1初始值=0.5fcA/N =
ζ1(当ζ1>1时,取1） =

l0/h =
ζ2(当l0/h<15时,取1）=

η=1+1/(1400*ei/h0)*(l0/h)^2*ζ1*ζ2 =
e=ηei+0.5h-as = mm

x=N/(α1*fc*b) = mm
ξ=x/h0 =
大小偏压(ξ>ξb小偏压;ξ<=ξb大偏压)：

计算配筋As = mm²
构造配筋=ρA = mm²

实际配筋As = mm²