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1、附件:計算書----------------------------------------------------------------------1-1剖面----------------------------------------------------------------------[驗算簡圖]----------------------------------------------------------------------[驗算條件]--------------------------------------------------------------
2、--------[基本參數(shù)]所依據(jù)的規(guī)程或方法:《建筑基坑支護技術規(guī)程》JGJ120-99基坑深度:4.900(m)基坑內地下水深度:5.000(m)基坑外地下水深度:1.100(m)基坑側壁重要性系數(shù):1.000土釘荷載分項系數(shù):1.250土釘抗拉抗力分項系數(shù):1.300整體滑動分項系數(shù):1.300[坡線參數(shù)]坡線段數(shù)3序號水平投影(m)豎向投影(m)傾角(°)13.4003.40045.022.5000.0000.031.5001.50045.0[土層參數(shù)]土層層數(shù)4序號土類型土層厚容重飽和容重粘聚力內摩擦角釘土摩阻力錨桿土摩阻力水土(m)(kN/m^3)(kN/m^3)(kPa
3、)(度)(kPa)(kPa)1素填土1.00018.020.010.015.016.016.0合算2粘性土1.00019.219.227.410.940.040.0合算3淤泥質土12.10017.117.18.26.116.016.0合算4淤泥13.40016.616.67.95.513.013.0合算[超載參數(shù)]超載數(shù)1序號超載類型超載值(kN/m)作用深度(m)作用寬度(m)距坑邊線距離(m)形式長度(m)1滿布均布30.000[土釘參數(shù)]土釘?shù)罃?shù)4序號水平間距(m)垂直間距(m)入射角度(度)鉆孔直徑(mm)長度(m)配筋11.4001.80010.020012.0001Φ48
4、×3.021.4001.00010.020012.0001Φ48×3.031.4000.90010.020012.0001Φ48×3.041.4000.90015.02009.0001Φ48×3.0[花管參數(shù)]基坑內側花管排數(shù)0基坑內側花管排數(shù)2序號橫向間距(m)縱向間距(m)入射角度(度)鉆孔直徑(mm)長度(m)發(fā)揮系數(shù)抗拉力(kN)1-4.4000.45090.06008.7501.000100.020.4500.45090.06009.1501.000100.0[坑內土不加固]21[內部穩(wěn)定驗算條件]考慮地下水作用的計算方法:總應力法土釘拉力在滑面上產(chǎn)生的阻力的折減系數(shù):0.
5、500*******************************************************************[驗算結果]*******************************************************************[局部抗拉驗算結果]工況開挖深度破裂角土釘號土釘長度受拉荷載標準值抗拔承載力設計值抗拉承載力設計值滿足系數(shù)(m)(度)(m)Tjk(kN)Tuj(kN)Tuj(kN)抗拔抗拉12.10028.8023.10027.8112.00020.186.087.03.5453.75634.00027.3112.0
6、008.080.787.08.0579.411212.00016.986.287.04.0794.46044.90026.9112.0008.275.387.07.3409.185212.00016.381.087.03.9854.639312.00022.486.087.03.0683.36054.90026.9112.0008.275.387.07.3409.185212.00016.381.087.03.9854.639312.00022.486.087.03.0683.36049.00024.468.187.02.2323.091[內部穩(wěn)定驗算結果]工況號安全系數(shù)圓心坐標x(
7、m)圓心坐標y(m)半徑(m)11.4046.0587.0833.20222.0363.54313.85712.18231.5663.42113.33612.68941.3633.32610.87211.36951.4033.6789.93610.595[外部穩(wěn)定計算參數(shù)]所依據(jù)的規(guī)程:《建筑地基基礎設計規(guī)范》GB50007-2002土釘墻計算寬度:10.000(m)墻后地面的傾角:0.0(度)墻背傾角:90.0(度)土與墻背的摩擦角:10.0(度)土與墻