地基沉降计算

基础,,,,,,,,,

柱下条形基础：计算公式见GBJ7-89《建筑地基基础设计规范》第8.2.6条。,,,,,,,,,

,,M=ai2(2L+a')(pmax+pj-2G/A)/12,,,,,,,

地基承载力设计值：f=fk+ηbγ（b-3)+ηdγ0（d-0.5),,,,,,,,ηb,ηd

fk,ηb,ηd,b,d,淤泥、淤泥质土,,fk＜50kPa,0,1

200,0,4.4,1.4,1.8,,,fk≥50kPa,0,1.1

,,,,,,,,,,

γ,γ0,f,1.2f,,人工填土、e≥0.85或Sr＞0.5的粉土,,,0,1.1

17.5,17,297.24,356.688,,e或IL≥0.85的粘性土,,,,

,,,,,,,,,,

,,,,,红粘土,含水比αw＞0.8,,0,1.2

,,,,,,含水比αw≤0.8,,0.15,1.4

,,,,,,,,,,

,,,,,e及IL均小于0.85的粘性土、,,,0.3,1.6

,,,,,e＜0.85及Sr≤0.5的粉土,,,0.5,2.2

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,,,,,粉砂、细砂（不包括很湿与饱和时的稍状）,,,2,3

,,,,,,,,,,

,,,,,中砂、粗砂、砾砂、碎石土,,,3,4.4

强风化的岩石，可参照风化成的相应土类取值。,,,,,,,,,

"Sr为土的饱和度，Sr≤0.5,稍湿；0.5＜Sr≤0.8,很湿；Sr＞0.8,饱和。",,,,,,,,,

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ZJ1,,,,,,,,,

,柱断面尺寸：,,bc,825,梯形面积：S=(2l'+2h')0.5h=,,,600000,

,,,hc,3030,其中（2l'+2h')0.5=l'+h'=,,,2400,

B,L,ai,a',G,A,M,pmax,pmin,pi

5.43,3.225,1.3,0.825,630.423,17.51175,395.9813925,230.7547925,218.1350101,227.7334818

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,3300,100,,224.4449013,,

,,,,,,,,,,

抗冲切验算：Fl≤Rl=0.6Alft,,,Al,ft,Rl≥,Fl,b',l',h'

,,,600000,1.1,396000,951842.7707,2.3,2.15,0.25

强度计算：As=M/0.9fyh0,,,h0,fy,As,,,,

,,,850,310,1669.750759,,,,

,,,,,,,,,,

,,,,,,,,,,

,,,,,,,,,,

,柱断面尺寸：,,bc,3030,梯形面积：S=(2l'+2h')0.5h=,,,637500,

,,,hc,825,其中（2l'+2h')0.5=l'+h'=,,,2550,

L,B,ai,a',G,A,M,pmax,pmin,pi

3.225,5.43,1.3,0.5,630.423,17.51175,613.11901,229.7569492,219.1328533,225.4743679

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,3300,50,,224.4449013,,

,,,,,,,,,,

抗冲切验算：Fl≤Rl=0.6Alft,,,Al,ft,Rl≥,Fl,b',l',h'

,,,637500,1.1,420750,350386.5465,2.15,2.3,0.25

强度计算：As=M/0.9fyh0,,,h0,fy,As,,,,

,,,850,310,2585.363736,,,,

,,,,,,,,,,

,,,,,,,,,,

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ZJ2,,,,,,,,,

,柱断面尺寸：,,bc,520,梯形面积：S=(2l'+2h')0.5h=,,,637500,

,,,hc,800,其中（2l'+2h')0.5=l'+h'=,,,2550,

B,L,ai,a',G,A,M,pmax,pmin,pi

3.5,3.3,1.25,0.52,415.8,11.55,501.062373,312.0667904,279.4137291,300.4049828

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,3000,110,,295.7402597,,

,,,,,,,,,,

抗冲切验算：Fl≤Rl=0.6Alft,,,Al,ft,Rl≥,Fl,b',l',h'

,,,637500,1.1,420750,243985.7143,2.5,2.3,0.25

强度计算：As=M/0.9fyh0,,,h0,fy,As,,,,

,,,850,310,2112.849981,,,,

,,,,,,,,,,

,,,,,,,,,,

,,,,,,,,,,

,柱断面尺寸：,,bc,800,梯形面积：S=(2l'+2h')0.5h=,,,687500,

,,,hc,520,其中（2l'+2h')0.5=l'+h'=,,,2750,

L,B,ai,a',G,A,M,pmax,pmin,pi

3.3,3.5,1.25,0.8,415.8,11.55,535.5428548,302.0369933,289.4435262,297.2667406

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,3000,40,,295.7402597,,

,,,,,,,,,,

抗冲切验算：Fl≤Rl=0.6Alft,,,Al,ft,Rl≥,Fl,b',l',h'

,,,687500,1.1,453750,258772.7273,2.3,2.5,0.25

强度计算：As=M/0.9fyh0,,,h0,fy,As,,,,

,,,850,310,2258.245224,,,,

,,,,,,,,,,

ZJ2,,,,,,,,,

,柱断面尺寸：,,bc,630,梯形面积：S=(2l'+2h')0.5h=,,,570000,

,,,hc,960,其中（2l'+2h')0.5=l'+h'=,,,2280,

B,L,ai,a',G,A,M,pmax,pmin,pi

3.36,3.03,1.2,0.63,366.5088,10.1808,422.7154476,303.6606946,279.1046676,294.890685

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,2600,70,,291.3826811,,

,,,,,,,,,,

抗冲切验算：Fl≤Rl=0.6Alft,,,Al,ft,Rl≥,Fl,b',l',h'

,,,570000,1.1,376200,220722.381,2.36,2.03,0.25

强度计算：As=M/0.9fyh0,,,h0,fy,As,,,,

,,,850,310,1782.481331,,,,

,,,,,,,,,,

,,,,,,,,,,

,,,,,,,,,,

,柱断面尺寸：,,bc,960,梯形面积：S=(2l'+2h')0.5h=,,,652500,

,,,hc,630,其中（2l'+2h')0.5=l'+h'=,,,2610,

L,B,ai,a',G,A,M,pmax,pmin,pi

3.03,3.36,1.2,0.96,366.5088,10.1808,477.2171017,297.2177767,285.5475856,292.5959188

,,,,,,,,,,

其中：pmax=ΣNi/A+6ΣMi/BL2,,,,ΣNi,ΣMi,,p,,

,,,,2600,30,,291.3826811