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獨立基礎計算,,,,,,,,,,,,

基礎編號:,#8-3,,,,,,,,,,,

單位：,"m,kN,kPa",,(綠色為需輸入數據，紅色為計算結果),,,,,,,,,

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"1.地基承載力,基礎底面積計算:",,,,,,,,2.基礎抗沖切計算：,,,,

,,,,,,,,,(僅考慮柱對底板沖切，且基礎為一階，四邊沖切面在基礎內):,,,

地基承載力特征值fa:,,,,,,,,,,,,

,fa=fak+ηbγ(b-3)+ηdγm(d-0.5)=,,,95,kPa,,,,計算公式：,FL=0.7βhpftμmh0,,

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,,fak=,80.00,kPa,,,,,基礎假定高度h=,,300,mm

,,ηb=,0.00,,,,,,保護層厚度as=,,75,mm

,,γ=,10.00,,,,,,,,,

,,b=,3.30,m,,,,,,h0=H-as-10=,215,mm

,,ηd=,1.00,,,,,,,ft=,1.43,MPa

,,γm=,20.00,,,,,,,βhp=,1.0,

,,d=,1.25,m,,,,,"柱截面寬高bc,hc:",,,

,,,,,,,,,,bc=,600,mm

,,,,,,,,,,hc=,600,mm

,,,,,,,,,臨界截面的周長μm:,,,

基礎底面積試算A:,,,,,,,,,,μm=2*(bc+hc)+4h0=,3260,mm

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軸心荷載作用,,A0=Fk/(fa-γm*d)=,,1.842105263,m2,,,,基礎抗沖切承載力R:,,,

,,,,,,,,,,R=0.7βhpftμmh0=,701.6009,kN

,標準荷載,Fk=,150.00,kN,,,,,,,,

,,Gk=A*γm*d=,272.25,kN,,,,,柱軸力設計值N:,,,

,,,,,,,,,,N=1.25*Fk=,187.5,kN

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"試取基礎長寬為b,L",,(用迭代法自動重新計算地基承載力),,,,,,,柱底土反力設計值N1:,,,

沿彎矩作用方向高度,,b=,3.30,m,,,,,,N1=,18.26618457,kN

垂直彎矩作用方向寬度,,L=,3.30,m,,,,,沖切荷載設計值FL:,,"(未扣除基礎及以上土重,也沒有考慮彎矩影響)",

,A=b*L=,,10.89,,,,,,,FL=N-N1=,169.2338154,kN

,Pk=(Fk+Gk)/A=,,38.77,kPa,"<fa,OK",,,,,,,

偏心荷載作用:,,,,,,,,,判斷:,"FL<R,OK!",,

,抵抗矩W=Lb2/6=,,5.9895,,,,,,,,,

,標準荷載,Mk=,5.98,kN*m,,,,,沖切計算基礎高度h=,,300,mm

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偏心距e=Mk/(Fk+Gk)=,,,0.014162226,m,,,,,,,,

,,a=b/2-e=,1.635837774,,,,,,,,,

,,[e]=b/6=,0.550,,,,,3.基礎配筋計算：,,,,

,Pkmax=Pk+Mk/W(用于e≤[e]),Pkmax=2/3*(Fk+Gk)/(L*a)(用于e>[e]),39.8,kPa,"<1.2fa,OK",,,,,,,

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,Pkmin=Pk-Mk/W