600桩CFG复合地基承载力计算
1.单桩承载力的计算
2.置换率
等边三角形布桩 1.05m=0.0473正方形布桩 1.13
m=0.0408矩形布桩 1.13s1=1750s2=1750
m=0.0921置换率m=0.0408
3.桩身强度校核
25
Ra=3358.613Ra/Ap=356360.701537772356.194494.复合地基承载力特征值 fak=160fsk=160β=0.75(0.75~0.95)
Ra=2356.1945Ap=0.2827
fspk=455.29
5.复合土层压缩模量Es=14.0367 2.8455339.9418
6.主体部分沉降计算 mRa/Ap+β(1-m)fsk=压缩模量比值ζ=fspk/fak=
复合土层压缩模量Esp=ζ Es=
试块抗压强度平均值 fcu =fcu/(3Ra/Ap)=实际单桩承载力取值=
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