桩身极限端阻砼抗压强桩身直径(扩大头)桩身砼成桩工艺桩端桩端力标准值度设计值d(mm)强度等级系数ψc土层名称土层类别直径qpk(kPa)(Mpa)D(mm)800800C3516.708001000C3516.708001200C3516.708001300C3516.708001400C3516.70中风化粉砂土、碎8001500C3516.700.706300砂岩石类土9001600C3516.709001700C3516.7012002400C3516.7013002600C3516.7014002800C3516.7015003000C3516.7022ApD/4表中:ccpkppkpQqANfd/4承载力特征值(Ra)
桩端面积 Ap(m2)0.5030.7851.1311.3271.5391.7672.0112.2704.5245.3096.1587.069cd/42RaMinQpk/2,N/1.35端阻力尺寸效应系数ψp1.0000.9280.8740.8510.8300.8110.7940.7780.6930.6750.6590.644桩端抗压承载力极限值316745936224711380489028100541112319761225812555028663桩身抗压承载力设计值5876587658765876587658767437743713221155161799520658桩端抗压承载力特征值160023003100360040004400500055009800113001280014300
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