独立基础基底尺寸直接计算法

独立基础基底尺寸直接计算法

M0N0V d H G0f a e b l h l

方法I（n值法）6060025 1.50.81801900.520.50.8 F k=N0+G0=780kn

M k=M0+VH+G0e=174kn.m

n≤3(1.2f a-γm d)(9M k/F k)^2/F k= 3.06

n= 1.6

C1=F k/[n(1.2f a-γm d)]= 2.46

C2=6M k/[n^2(1.2f a-γm d)]= 2.05

k=[(C2/2)^2-(C1/3)^2]^0.5=0.71

b=(C2/2+k)^(1/3)+(C2/2-k)^(1/3)= 1.88m

L=nb= 3.02m A1= 5.68

b= 1.90m

L= 3.00m A=####

校核：

P k=F k/(bL)+γm d=167kPa

P kmax=F k/(bL)+γm d+6M k/(bL^2)=228kPa

P kmin=F k/(bL)+γm d-6M k/(bL^2)=106kPa

方法Ⅱ（λ值法）

λ=0.5

n=[10M k/(f a(1-λ)]^2*[(0.6(1+λ)fa-γm d)/F k]^3=1.97

b=[F k/(n(0.6(1+λ)f a-γmd)]^0.5= 1.67m

L=nb= 3.3m A1= 5.53

b= 2.00m

L= 2.90m A=####

校核：

P k=F k/(bL)+γm d=164kPa

P kmax=F k/(bL)+γm d+6M k/(bL^2)=226kPa

P kmin=F k/(bL)+γm d-6M k/(bL^2)=103kPa

b`=0.90m

L`= 1.35m

m q=(L-H)/2-h0=0.34m

A mq=m q b=0.68m2

m a=(L-L`)/2-h01=0.37m

A aq=m a b=0.73m2

V=P max A mq=154kn

h0=V/[0.6f t(H-h0)]=5832

26.4

γm h0H1h01砼等

级fc f t

钢筋

等级

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