CD段土钉墙设计计算书

----------------------------------------------------------------------验算项目:CD段土钉墙设计计算书----------------------------------------------------------------------[验算简图]----------------------------------------------------------------------[验算条件]----------------------------------------------------------------------[基本参数]所依据的规程或方法：《建筑基坑支护技术规程》JGJ120-2012支护结构重要性系数：1.000基坑深度：6.800(m)基坑内地下水深度：20.000(m)基坑外地下水深度：20.000(m)[坡线参数]坡线段数1序号水平投影(m)竖向投影(m)倾角(°)19.7116.80035.0[土层参数]土层层数1层号土类名称层厚重度浮重度粘聚力内摩擦角与锚固体摩阻力与土钉摩阻力水土(m)(kN/m^3)(kN/m^3)(kPa)(度)(kPa)(kPa)1素填土10.20021.0---4.025.0270.020.0---[超载参数]超载数1序号超载类型超载值(kPa,kN/m)作用深度(m)作用宽度(m)距坑边距(m)形式长度(m)1满布均布35.000注：距坑边距--荷载起点到基坑底部的水平距离。[土钉参数]土钉道数6 土钉材料钢筋序号水平间距(m)竖向间距(m)入射角度(度)钻孔直径(mm)长度(m)配筋11.3000.20020.011015.0001E1821.3001.30020.011015.0001E1831.3001.30020.011015.0001E1841.3001.30020.011015.0001E1851.3001.30020.011015.0001E1861.3001.30020.01105.0001E18钢筋类型对应关系：d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,Q-HRBF400,R-HRBF500[花管参数]基坑内侧花管排数0基坑外侧花管排数0[锚杆参数]锚杆道数0[坑内土不加固][抗拔承载力计算条件]轴向拉力标准值计算中土压力取法：土钉位置处抗拔承载力计算锚杆是否分担土压力：是施工期局部抗拉安全系数折减：1.000土钉荷载分项系数：1.250土钉抗拔安全系数：1.600土钉墙底面支锚轴向拉力经验系数ηb：0.000[整体稳定计算条件]整体稳定计算方法:瑞典条分法考虑地下水作用的计算方法：总应力法条分法中的土条宽度：0.600(m)基坑底面以下的截止计算深度：0.000(m)基坑底面以下滑裂面搜索步长：1.000(m)搜索最不利滑裂面是否考虑加筋：是施工期整体稳定安全系数折减：1.000整体滑动稳定安全系数：1.300------------------------------------------------------------------[验算结果]------------------------------------------------------------------[抗拔承载力验算结果]工况开挖深度破裂角支锚号支锚长度抗拔承载力标准值抗拉承载力标准值min(Rkj,fykAs)轴向拉力标准值抗拔(m)(度)(m) Rkj(kN)fykAs(kN)(kN)Nkj(kN)安全系数10.70029.5022.00029.51土钉15.000100.939101.788100.9398.82511.43833.30029.51土钉15.00098.964101.78898.9643.75126.3862土钉15.000100.939101.788100.93914.7896.82544.50029.51土钉15.00097.142101.78897.1423.75125.9002土钉15.00099.116101.78899.1167.84712.6303土钉15.000101.091101.788101.09115.1286.68255.80029.51土钉15.00095.167101.78895.1673.75125.3742土钉15.00097.142101.78897.1427.84712.3793土钉15.00099.116101.78899.1168.36911.8444土钉15.000101.091101.788101.09113.1967.66166.80029.51土钉15.00093.648101.78893.6483.75124.9692土钉15.00095.623101.78895.6237.84712.1853土钉15.00097.597101.78897.5978.36911.6624土钉15.00099.572101.78899.5727.30013.6405土钉15.000101.546101.788101.5467.31913.87576.80029.51土钉15.00093.648101.78893.6483.75124.9692土钉15.00095.623101.78895.6237.84712.1853土钉15.00097.597101.78897.5978.36911.6624土钉15.00099.572101.78899.5727.30013.6405土钉15.000101.546101.788101.5464.64121.8796土钉5.00034.406101.78834.4060.227151.875[受拉承载力验算结果]工况开挖深度破裂角支锚号支锚长度轴向拉力设计值抗拉承载力设计值抗拉(m)(度)(m) Nj(kN)fyAs(kN) 满足系数10.70029.5022.00029.51土钉15.00011.03191.6098.30433.30029.51土钉15.0004.68891.60919.5402土钉15.00018.48791.6094.95544.50029.51土钉15.0004.68891.60919.5402土钉15.0009.80991.6099.3393土钉15.00018.91091.6094.84555.80029.51土钉15.0004.68891.60919.5402土钉15.0009.80991.6099.3393土钉15.00010.46191.6098.7574土钉15.00016.49591.6095.55466.80029.51土钉15.0004.68891.60919.5402土钉15.0009.80991.6099.3393土钉15.00010.46191.6098.7574土钉15.0009.12591.60910.0405土钉15.0009.14991.60910.01376.80029.51土钉15.0004.68891.60919.5402土钉15.0009.80991.6099.3393土钉15.00010.46191.6098.7574土钉15.0009.12591.60910.0405土钉15.0005.80291.60915.7906土钉5.0000.28391.609323.507[整体稳定验算结果]工况号安全系数圆心坐标x(m)圆心坐标y(m)半径(m)11.0829.3817.3941.45721.3028.4086.6942.44931.3897.2197.8644.89641.3835.9968.1286.42751.3364.5968.3237.97961.3213.7198.7179.47771.3504.3798.7979.826[喷射混凝土面层计算][计算参数]厚度：80(mm)混凝土强度等级:C20配筋计算as:15(mm)水平配筋:d8@150竖向配筋:d8@150荷载分项系数:1.200[计算结果]编号深度范围荷载值(kPa)轴向M(kN.m)As(mm^2)实配As(mm^2)10.00-0.2018.6x0.000160.0(构造)335.1y