(以4勘探孔为例)#
CFG桩单桩竖向承载力特征值估算
桩顶标高:(m)桩径:(m)层号2345678有效桩长桩周土阻力47.000.50层厚(m)2.121.204.101.602.101.503.3816.00593.93桩端土阻力#
桩端标高:(m)31.00截面周长:(m)1.57侧阻力特征值分层侧阻力qsi(KPa)1820222325282838.1624.0090.2036.8052.5042.0094.64378.3088.31有效桩长:(m)截面面积:(㎡)端阻力特征值qp(KPa)16.000.19625450单桩承载力682.24(以9勘探孔为例)桩顶标高:(m)桩径:(m)层号2345678有效桩长桩周土阻力47.000.50层厚(m)2.062.501.503.002.501.502.9416.00590.16桩端标高:(m)31.00截面周长:(m)1.57侧阻力特征值分层侧阻力qsi(KPa)1820222325282837.0850.0033.0069.0062.5042.0082.32375.9088.31有效桩长:(m)截面面积:(㎡)端阻力特征值qp(KPa)16.000.19625450桩端土阻力单桩承载力678.48单桩竖向极限承载力计算公式
RaupqsiliqpAp单桩承载力特征值(KN)取:处理后桩间土承载力取④层承载力特征值:正方形布桩,桩间距取(m):面积置换率m复合地基承载力fspkm0.048956751202.00参数β取0.75Ra1mfsk253.94640Ap同时根据地基处理规范公式9.2.7反算桩体试块抗压强度平均值应满足:
fcu ≥
10.3Mpa
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