天然地基承载力计算(Excel小程序).xls

ψkMbMdMc 00.001.003.14 10.011.063.23 20.031.123.32 30.041.183.41 40.061.253.51 50.081.323.61 60.101.393.71 70.121.473.82 80.141.553.93 90.161.644.05 100.181.734.17 110.201.834.29 120.231.944.42 130.262.054.55 140.292.174.69 150.322.304.84 15.50.342.364.92 160.362.435.00 16.50.372.505.07 170.392.575.15 17.50.412.645.23 180.432.725.31 18.50.452.805.39 190.472.935.48 19.50.492.995.57 200.513.065.66 20.50.533.155.75 210.563.255.85 21.50.583.345.94 220.613.446.04 22.50.653.546.14 230.703.656.24 23.50.753.766.34 240.803.876.45 24.50.873.996.56 250.954.126.67 25.51.024.246.78 261.104.376.90 26.51.174.517.02 271.254.657.15 27.51.324.797.27 281.404.937.40 28.51.525.097.53 291.655.267.67 29.51.775.427.81 301.905.597.95 30.52.075.788.10 312.255.978.25 31.52.426.168.40 322.606.358.55 32.52.806.568.71 333.006.788.88 33.53.206.999.05 343.407.219.22 34.53.607.479.40 353.807.739.59 364.208.259.97 374.608.8410.38 385.009.4410.80 395.4010.1411.26 405.8010.8411.73 415.8010.8411.73 425.8010.8411.73 435.8010.8411.73 445.8010.8411.73 455.8010.8411.73 465.8010.8411.73 475.8010.8411.73 485.8010.8411.73 495.8010.8411.73 505.8010.8411.73 附录A 82-T-101天天然然地地基基基基础础承承载载力力计计算算 地基基础尺寸 基础宽度 4.0 m 基础长度 10.0 m 基础厚度 0.8 m 基础埋深 1.5 m 依据规范 1.建筑地基基础设计规范GB 50007-2002 5.2 2.建筑抗震设计规范GB 50011-2001 3.岩土工程勘察规范GB 50021-2001 土层的物理力学参数引自桂林水文工程地质勘察院-PX厂区岩土工程勘察报告2009.09 岩土编号岩土名称 土层深度 天然重度粘聚力内摩擦角承载力特征值 mγKN/m3CkKPaφk度fakKPa 1细砂①16.818.00.031.0240 2粉质粘土②22.617.517.09.0145 3粉质粘土③27.918.832.019.0220 4粗砂④30.019.00.027.0260 5残积砂质粘性土⑤36.718.727.723.4240 6全风化花岗岩⑥44.619.530.028.0350 7散体状强风化花岗岩⑦49.920.540.032.0500 8碎裂状强风化花岗岩⑧53.821.0800 *地下水位深度1.0 m 探勘孔号 ZK-091ZK-091ZK-091ZK-091ZK-091ZK-091 A-1 地基承载力计算公式 参数取值φk度 31.0基础下土层的加权平均内摩擦角 Mb 2.25 Md 5.97承载力系数 Mc 8.25 γKN/m3 8.2基础下土层的加权平均重度 γmKN/m3 18.0基础上土层的加权平均重度 bm 4.0 dm 1.5 CkKPa 0.0 由土的抗剪强度指标确定的天然基础承载力特征值为 235.0KPa A-2 修正式 参数取值 ηb 2.0 ηd 3.0 γKN/m3 8.2基础下土层的加权平均重度 γmKN/m3 18.0基础上土层的加权平均重度 bm 4.0 dm 1.5 依地区工程实践经验修正后的天然基础承载力特征值为 310.4KPa 依土的抗剪强度指标计算的天然基础承载力特征值为 235.0KPa 结论 本天然基础承载力特征值为 235.0KPa A-3