根据土的物理性质与承载力参数之间的经验关系确定单桩竖向极限承载力标准值xxx项目地下水标高实际桩长l有效桩长l'-4.5016.0015.80qsik（kPa）56284630505544孔号桩截面∮(mm)u(m)A(m2)146001.8850.2830.00＝85高程3.100(m)桩顶85国家高程(m)桩底85国家高程(m)桩顶有效标高(m)qsik*li（kPa）79.5211.2050.60330.0050.0048.400.00钻孔灌注桩 -8.70-24.70-8.90土层④粉土~粉砂④-1 粉质粘土④-2粉土~粉砂⑤粉质粘土⑥粘土、粉质粘土⑦粉质粘土⑧粉质粘土桩底有效黄海标高⑦为桩端持力层qpkQpk=qpk*A(KN)Quk=Qpk+QskR=QUK/2.0层顶黄海标高-8.90-10.32-10.72-11.82-22.82-23.82-24.70-24.70li（m）1.420.401.1011.001.000.880.0015.80抗拔系数λi0.600.700.600.700.750.700.70λi*qsik*li47.7127.8430.3623137.533.880700Σqsik*li198Qsk=uΣqsik*li (KN)12726365701074Σλi*qsik*liGp(KN)Tuk=uΣλi*qsik*liTuk/2+Gp38867732433注：1、依据桩基规范《JGJ 94-2008》5.3.5式、5.4.6-1式2、该表格的抗拔承载力计算只限于非整体破坏群桩，且为等直径桩