----------------------------------------------------------------------驗(yàn)算項(xiàng)目:CD段土釘墻設(shè)計(jì)計(jì)算書----------------------------------------------------------------------[驗(yàn)算簡圖]----------------------------------------------------------------------[驗(yàn)算條件]----------------------------------------------------------------------[基本參數(shù)]所依據(jù)的規(guī)程或方法：《建筑基坑支護(hù)技術(shù)規(guī)程》JGJ120-2012支護(hù)結(jié)構(gòu)重要性系數(shù)：1.000基坑深度：6.800(m)基坑內(nèi)地下水深度：20.000(m)基坑外地下水深度：20.000(m)[坡線參數(shù)]坡線段數(shù)1序號(hào)水平投影(m)豎向投影(m)傾角(°)19.7116.80035.0[土層參數(shù)]土層層數(shù)1層號(hào)土類名稱層厚重度浮重度粘聚力內(nèi)摩擦角與錨固體摩阻力與土釘摩阻力水土(m)(kN/m^3)(kN/m^3)(kPa)(度)(kPa)(kPa)1素填土10.20021.0---4.025.0270.020.0---[超載參數(shù)]超載數(shù)1序號(hào)超載類型超載值(kPa,kN/m)作用深度(m)作用寬度(m)距坑邊距(m)形式長度(m)1滿布均布35.000注：距坑邊距--荷載起點(diǎn)到基坑底部的水平距離。[土釘參數(shù)]土釘?shù)罃?shù)6 土釘材料鋼筋序號(hào)水平間距(m)豎向間距(m)入射角度(度)鉆孔直徑(mm)長度(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鋼筋類型對(duì)應(yīng)關(guān)系：d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,Q-HRBF400,R-HRBF500[花管參數(shù)]基坑內(nèi)側(cè)花管排數(shù)0基坑外側(cè)花管排數(shù)0[錨桿參數(shù)]錨桿道數(shù)0[坑內(nèi)土不加固][抗拔承載力計(jì)算條件]軸向拉力標(biāo)準(zhǔn)值計(jì)算中土壓力取法：土釘位置處抗拔承載力計(jì)算錨桿是否分擔(dān)土壓力：是施工期局部抗拉安全系數(shù)折減：1.000土釘荷載分項(xiàng)系數(shù)：1.250土釘抗拔安全系數(shù)：1.600土釘墻底面支錨軸向拉力經(jīng)驗(yàn)系數(shù)ηb：0.000[整體穩(wěn)定計(jì)算條件]整體穩(wěn)定計(jì)算方法:瑞典條分法考慮地下水作用的計(jì)算方法：總應(yīng)力法條分法中的土條寬度：0.600(m)基坑底面以下的截止計(jì)算深度：0.000(m)基坑底面以下滑裂面搜索步長：1.000(m)搜索最不利滑裂面是否考慮加筋：是施工期整體穩(wěn)定安全系數(shù)折減：1.000整體滑動(dòng)穩(wěn)定安全系數(shù)：1.300------------------------------------------------------------------[驗(yàn)算結(jié)果]------------------------------------------------------------------[抗拔承載力驗(yàn)算結(jié)果]工況開挖深度破裂角支錨號(hào)支錨長度抗拔承載力標(biāo)準(zhǔn)值抗拉承載力標(biāo)準(zhǔn)值min(Rkj,fykAs)軸向拉力標(biāo)準(zhǔn)值抗拔(m)(度)(m) Rkj(kN)fykAs(kN)(kN)Nkj(kN)安全系數(shù)10.70029.5022.00029.51土釘15.000100.939101.788100.9398.82511.43833.30029.51土釘15.00098.964101.78898.9643.75126.3862土釘15.000100.939101.788100.93914.7896.82544.50029.51土釘15.00097.142101.78897.1423.75125.9002土釘15.00099.116101.78899.1167.84712.6303土釘15.000101.091101.788101.09115.1286.68255.80029.51土釘15.00095.167101.78895.1673.75125.3742土釘15.00097.142101.78897.1427.84712.3793土釘15.00099.116101.78899.1168.36911.8444土釘15.000101.091101.788101.09113.1967.66166.80029.51土釘15.00093.648101.78893.6483.75124.9692土釘15.00095.623101.78895.6237.84712.1853土釘15.00097.597101.78897.5978.36911.6624土釘15.00099.572101.78899.5727.30013.6405土釘15.000101.546101.788101.5467.31913.87576.80029.51土釘15.00093.648101.78893.6483.75124.9692土釘15.00095.623101.78895.6237.84712.1853土釘15.00097.597101.78897.5978.36911.6624土釘15.00099.572101.78899.5727.30013.6405土釘15.000101.546101.788101.5464.64121.8796土釘5.00034.406101.78834.4060.227151.875[受拉承載力驗(yàn)算結(jié)果]工況開挖深度破裂角支錨號(hào)支錨長度軸向拉力設(shè)計(jì)值抗拉承載力設(shè)計(jì)值抗拉(m)(度)(m) Nj(kN)fyAs(kN) 滿足系數(shù)10.70029.5022.00029.51土釘15.00011.03191.6098.30433.30029.51土釘15.0004.68891.60919.5402土釘15.00018.48791.6094.95544.50029.51土釘15.0004.68891.60919.5402土釘15.0009.80991.6099.3393土釘15.00018.91091.6094.84555.80029.51土釘15.0004.68891.60919.5402土釘15.0009.80991.6099.3393土釘15.00010.46191.6098.7574土釘15.00016.49591.6095.55466.80029.51土釘15.0004.68891.60919.5402土釘15.0009.80991.6099.3393土釘15.00010.46191.6098.7574土釘15.0009.12591.60910.0405土釘15.0009.14991.60910.01376.80029.51土釘15.0004.68891.60919.5402土釘15.0009.80991.6099.3393土釘15.00010.46191.6098.7574土釘15.0009.12591.60910.0405土釘15.0005.80291.60915.7906土釘5.0000.28391.609323.507[整體穩(wěn)定驗(yàn)算結(jié)果]工況號(hào)安全系數(shù)圓心坐標(biāo)x(m)圓心坐標(biāo)y(m)半徑(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[噴射混凝土面層計(jì)算][計(jì)算參數(shù)]厚度：80(mm)混凝土強(qiáng)度等級(jí):C20配筋計(jì)算as:15(mm)水平配筋:d8@150豎向配筋:d8@150荷載分項(xiàng)系數(shù):1.200[計(jì)算結(jié)果]編號(hào)深度范圍荷載值(kPa)軸向M(kN.m)As(mm^2)實(shí)配As(mm^2)10.00-0.2018.6x0.000160.0(構(gòu)造)335.1y