1.计算依据:2.输入条件:式(8.5.5-1)式(8.5.5-1)439.8kNmm桩单位长度浮重度0.9Gp=1.6956ZK2ZK3ZK13ZK17ZK25ZK26ZK32ZK38ZK37ZK33ZK20ZK5ZK241素填土120.701.33.71.83.42.73.12.72.73.53.93.74.32粉质黏土300.72.73.43.5005.81333.22.805.13-1细沙90.5000001.70000001.33-2淤泥质土1100000000000001.13-3中砂350.5004.502002200.7004粉质黏土400.754.24.66.457.71.96.1445.13.87.505-1全风化岩700.53.53.803.6502.24.14.84.84.72.82.93.95-2强风化岩12011111111111115-3中风化岩101111.212.716.311.913.114.314.316.516.516.51414.115.78128447688236777189031016101699478383978112521284120812631117115813421456145614341223127912213%0%6%2%13%10%5%13%13%12%5%0%5%单桩竖向承载力特征值Ra平均值=kN,单桩竖向承载力特征值Ra平均值=Quk/2=kN,kN40141839240635135545450450450838743035919222820222424282828242427计算公式:1256.6桩身周长u(mm)=πd=Qpk(kN)=qpkAp=1284层序有效桩长L(m)=Rsa=Up∑qsia·li=Ra=Rsa+Rpa=单桩竖向承载力特征值Ra计算单桩抗拔力Rta计算桩自重0.9Gp=单桩竖向抗拔载力特征值Rta=Up∑λi·qsiali+0.9Gp岩土厚度li(m)桩侧摩阻力特征值qsia(kPa)岩土名称极差(不应超过30%)预制管桩单桩竖向承载力特征值计算广东省《建筑地基基础设计规范》DBJ15-31-2003第10.2节《混凝土结构设计规范》GB50010-2010工程名称:桩类别:桩端承载土层:清远厂区厂房1~6强风化岩桩身直径d(mm):400单桩竖向极限承载力标准值Quk=Qsk+Qpk=u∑qsikli+qpkAp抗拔系数λiCFG孔桩3500桩端阻力特征值qpa(kPa)=实取单桩竖向承载力特征值Ra=1700Up∑λi·qsiali420440420427373379478531531536411454385kN,kN,单桩抗拔特征值Rta=单桩抗拔力Rta计算416单桩竖向抗拔载力特征值Rta平均值=实取单桩抗拔载力特征值Rta=400