基桩竖向承载力特征值计算书

单桩竖向承载力特征值Ra计算参考孔号1、基本参数计算桩直径d（m）扩底直径D（m）土类型ψsi(≤1)ψp(≤1)2、土层描述层底绝对标高(m）4.93.98-8.15-8.62-20.52-22.52-27.52-34.02-38.42-41.02-45.22-48.72-51.72-54.92-64.52-66.52-68.520.4711.9256.54.42.64.23.533.29.62240784263346555734845806247680.95640.95640.95640.95640.95640.95640.95640.95640.95640.95640.95640.95640.95640.9564∑ψsiqsikli3、计算结果总极限侧阻力标准值Qsk:Qsk=u∑ψsiqsikli11071.8侧阻比值93%18.0887.780.3301.3211.4273.5136.8293.2160.7129.1244.8569.289.9130.13526.112000.9457土层厚度（li)桩侧极限阻力（qsik)大直径桩侧阻力尺寸效应系数（ψsi)ψsiqsikli桩端极限阻力（qpk）大直径桩端阻力尺寸效应系数（ψp)11桩周长u（m）桩端面积Ap（m2）当d＞0.8m时黏性土、粉土（0.8/d）1/5BZ01u=πdAp=πd2/43.140.785砂土、碎石类土0.956352499790037（0.8/d）1/30.928317766722556（0.8/D）1/40.945741609003176（0.8/D）1/30.928317766722556土层名称±0.00标高孔口标高桩顶标高桩顶以下土层描述⑤2粉土⑥1粘土⑥2a粉土⑥2粉质粘土⑦粉质粘土夹粉土⑧1粉质粘土⑧2粉质粘土⑧3粘土⑧4a粉质粘土夹粉土⑧4粉土⑧5a粘土⑧5粉质粘土⑧6粉土⑨1粉质粘土总极限端阻力标准值Qpk:单桩竖向极限承载力标准值Quk:基桩竖向承载力Ra:桩长:Qpk=ψpqpkApQuk=Qsk+QpkRa=Quk/2890.811963598160.370