灌注桩及大直径桩竖向承载力设计值

桩径D(m)桩身长度L(m)桩侧极限侧阻力标准值qsk（kPa）桩端极限端阻力标准值qpk（kPa）桩侧阻抗力分项系数γs桩端阻抗力分项系数γp大直径桩侧阻力效应系数ψs=(0.8/D)^1/3大直径桩端阻力尺寸效应系数ψp=(0.8/D)^1/3桩身周长u(m)桩端面积Ap(m^2)单桩极限侧阻力标准值(kN)Qsk = u * ∑ψsi * qsik * lsi单桩极限端阻力标准值(kN)Qpk = ψp * qpk * Ap单桩竖向极限承载力标准值(kN) Quk = Qsk + Qpk单桩竖向承载力设计值(kN)R = Qsk / γs + Qpk / γp根据桩径按内插法计算桩身配筋率ρ(0.20%～0.65%)桩身最小配筋值＝ρ*Apφ16根数(As=201)φ18根数(As=2)φ20根数(As=314)φ22根数(As=380)φ25根数(As=490)0.802.0010.0045001.651.651.001.002.510.5050.242262231214020.518260213119761.003.0015.0045001.651.650.930.933.140.79131.173281341320680.46536501915121081.103.0012.0045001.651.650.900.903.450.95111.823846395823990.43841652117141191.202.0020.0045001.651.650.870.873.771.13131.674447457827750.412465824191513101.300.000.0045001.651.650.850.8.081.330.005081508130790.385511526211714111.600.000.0045001.651.650.790.795.022.010.007182718243530.30661513125201713制作人: GYB 2017/3/7 第 1 页