方案設(shè)計(jì)圖附件：計(jì)算書

附件：金沙家園一期基坑護(hù)壁工程方案設(shè)計(jì)計(jì)算書目錄一、編制說明二、基坑支護(hù)設(shè)計(jì)電算書三、結(jié)論與建議一、編制說明1、設(shè)計(jì)計(jì)算依據(jù)：《建筑結(jié)構(gòu)可靠度設(shè)計(jì)統(tǒng)一標(biāo)準(zhǔn)》(GB50068-2001)《建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范》(GB50007-2011)《建筑基坑支護(hù)技術(shù)規(guī)程》(JGJ120-2012)《宜賓豆壩園金沙家園（安置房）一期巖土工程勘察報(bào)告書》（四川省地質(zhì)工程勘察院2014.7）；“基礎(chǔ)部分設(shè)計(jì)圖”（（自貢市城市規(guī)劃設(shè)計(jì)研究院有限責(zé)任公司2014年5月））2、基坑工程設(shè)計(jì)等級(jí)：根據(jù)本工程場(chǎng)地的地質(zhì)條件，結(jié)合基坑周邊現(xiàn)狀，綜合確定本基坑工程設(shè)計(jì)等級(jí)為二級(jí)。3、正常使用條件下，基坑支護(hù)工程設(shè)計(jì)使用年限為1年。4、基坑工程設(shè)計(jì)電算軟件：基坑支護(hù)設(shè)計(jì)采用理正超級(jí)土釘支護(hù)設(shè)計(jì)軟件7.0版；編制單位為北京理正軟件設(shè)計(jì)研究院。5、本工程基坑開挖深度為13.0m，采用噴錨支護(hù)方案。6、地面超載按基礎(chǔ)施工期間不同基坑段可能的地表荷載分布按10kN/m考慮。7、參照設(shè)計(jì)單位提交的圖紙說明，基坑坑底標(biāo)高，0～13.0m。二、基坑支護(hù)設(shè)計(jì)電算書----------------------------------------------------------------------設(shè)計(jì)項(xiàng)目:----------------------------------------------------------------------[AB段設(shè)計(jì)簡圖]----------------------------------------------------------------------[設(shè)計(jì)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基坑深度：13.000(m)基坑內(nèi)地下水深度：25.000(m)基坑外地下水深度：25.000(m)支護(hù)結(jié)構(gòu)重要性系數(shù)：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整體滑動(dòng)穩(wěn)定安全系數(shù)：1.300土釘墻底面支錨軸向拉力經(jīng)驗(yàn)系數(shù)ηb：1.000[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(°)16.50013.00063.4[土層參數(shù)]土層層數(shù)2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1.40018.5---3.015.016.016.0---2卵石18.10021.0---5.038.0210.0210.0---[超載參數(shù)]超載數(shù)1序號(hào)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10.000[土釘參數(shù)]土釘?shù)罃?shù)8序號(hào)水平間距(m)垂直間距(m)入射角度(度)鉆孔直徑(mm)11.5000.80015.013021.5001.70015.013031.5001.70015.013041.5001.70015.013051.5001.70015.013061.5001.50015.013071.5001.50015.013081.5001.40015.0130[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]施工過程中抗拔承載力滿足系數(shù):1.000施工過程中整體穩(wěn)定滿足系數(shù):1.000[整體穩(wěn)定設(shè)計(jì)條件]考慮地下水作用的計(jì)算方法：總應(yīng)力法圓弧滑動(dòng)坡底截止深度(m)：0.000(m)圓弧滑動(dòng)坡底滑面步長(m)：1.000(m)----------------------------------------------------------------------[設(shè)計(jì)結(jié)果]----------------------------------------------------------------------[抗拔承載力設(shè)計(jì)結(jié)果]工況開挖深度破裂角支錨號(hào)設(shè)計(jì)長度最大長度(工況)拉力標(biāo)準(zhǔn)值Kt×Nkj(m)(度)(m)(m)Nkj(kN)(kN)11.10039.2022.80045.01土釘2.4892.489(2)15.324.434.50047.11土釘2.3942.489(2)8.213.12土釘1.0951.095(3)20.733.146.20048.11土釘2.4212.489(2)7.712.32土釘1.3901.390(4)8.814.13土釘1.2811.281(4)33.253.157.90048.71土釘2.4522.489(2)7.411.82土釘1.8741.874(5)8.513.63土釘1.4821.482(5)16.426.34土釘1.4791.479(5)45.272.369.40049.01土釘2.8012.801(6)7.211.62土釘2.2942.294(6)8.313.33土釘1.9111.911(6)16.025.74土釘1.5281.528(6)23.838.05土釘1.5361.536(6)52.483.9710.90049.21土釘3.2073.207(7)7.111.42土釘2.7102.710(7)8.213.13土釘2.3342.334(7)15.825.24土釘1.9581.958(7)23.437.45土釘1.5441.544(7)28.946.36土釘1.6671.667(7)60.096.0812.30049.41土釘3.5863.586(8)7.011.32土釘3.0953.095(8)8.112.93土釘2.7242.724(8)15.624.94土釘2.3532.353(8)23.136.95土釘1.9451.945(8)28.645.76土釘1.5741.667(7)32.852.57土釘1.7451.745(8)66.1105.8913.00049.51土釘3.7763.776(9)7.011.22土釘3.2873.287(9)8.012.93土釘2.9192.919(9)15.524.84土釘2.5502.550(9)23.036.75土釘2.1442.144(9)28.445.56土釘1.7741.774(9)32.652.27土釘1.4091.745(8)37.159.38土釘1.2391.239(9)50.480.6[整體穩(wěn)定設(shè)計(jì)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)支錨號(hào)支錨長度12.3765.71013.1237.561213.849-0.08222.13112.06217.00038.201-0.90615.1888.44517.00026.00047.335-3.00315.32110.65917.00026.00036.00056.173-5.93516.00213.81517.00026.00036.00045.00065.543-9.53017.44717.89117.00026.00036.00045.00055.00074.583-12.27918.35721.02317.00026.00036.00045.00055.00064.00084.490-11.79415.75319.34117.00026.00036.00045.00055.00064.00073.00093.712-14.73618.03023.28617.00026.00036.00045.00055.00064.00073.00082.000[土釘選筋計(jì)算結(jié)果]鋼筋類型對(duì)應(yīng)關(guān)系：d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,P-HRBF335,Q-HRBF400,R-HRBF500土釘號(hào)土釘拉力(抗拉)土釘拉力(穩(wěn)定)計(jì)算鋼筋面積配筋配筋面積124.4413.51148.51E401256.6233.1449.51248.71E401256.6353.1439.31220.41E401256.6472.3351.0974.91E361017.9583.9357.8994.01E361017.9696.0270.1750.21E32804.27105.8187.0519.41E32804.2880.6127.1353.11E32804.2[噴射混凝土面層計(jì)算][計(jì)算參數(shù)]厚度：150(mm)混凝土強(qiáng)度等級(jí):C25配筋計(jì)算as:15(mm)水平配筋:d8@150豎向配筋:d8@150配筋計(jì)算as:15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)10.00~0.806.8x0.086317.5(構(gòu)造)335.1y0.397317.5(構(gòu)造)335.120.80~2.5010.6x1.129317.5(構(gòu)造)335.1y0.847317.5(構(gòu)造)335.132.50~4.2016.1x1.714317.5(構(gòu)造)335.1y1.285317.5(構(gòu)造)335.144.20~5.9026.3x2.800317.5(構(gòu)造)335.1y2.099317.5(構(gòu)造)335.155.90~7.6036.5x3.886317.5(構(gòu)造)335.1y2.914317.5(構(gòu)造)335.167.60~9.1046.1x3.814317.5(構(gòu)造)335.1y3.814317.5(構(gòu)造)335.179.10~10.6055.1x4.558317.5(構(gòu)造)335.1y4.558317.5(構(gòu)造)335.1810.60~12.0063.7x4.535317.5(構(gòu)造)335.1y5.314317.5(構(gòu)造)335.1912.00~13.0070.9x1.996317.5(構(gòu)造)335.1y5.162317.5(構(gòu)造)335.1－－------------------------------------------------------------------[流土穩(wěn)定性驗(yàn)算]_K=4.582>=1.5,滿足規(guī)范要求。[抗承壓水(突涌)驗(yàn)算]K`y=P`cz/P`wy-式中_Pcz———基坑開挖面以下至承壓水層頂板間覆蓋土的自重壓力(kN/m2);_Pwy———承壓水層的水頭壓力(kN/m2);_Kty———抗承壓水頭(突涌)穩(wěn)定性安全系數(shù)，規(guī)范要求取大于1.100。Kty=42.00/30.00=1.39>=1.10基坑底部土抗承壓水頭穩(wěn)定!

[BC段設(shè)計(jì)簡圖]----------------------------------------------------------------------[設(shè)計(jì)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基坑深度：10.000(m)基坑內(nèi)地下水深度：25.000(m)基坑外地下水深度：25.000(m)支護(hù)結(jié)構(gòu)重要性系數(shù)：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整體滑動(dòng)穩(wěn)定安全系數(shù)：1.300土釘墻底面支錨軸向拉力經(jīng)驗(yàn)系數(shù)ηb：1.000[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(°)13.50010.00070.7[土層參數(shù)]土層層數(shù)2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1.90018.5---3.015.016.016.0---2卵石17.63021.0---5.038.0210.0210.0---[超載參數(shù)]超載數(shù)1序號(hào)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10.000[土釘參數(shù)]土釘?shù)罃?shù)6序號(hào)水平間距(m)垂直間距(m)入射角度(度)鉆孔直徑(mm)11.5000.80015.013021.5001.50015.013031.5001.50015.013041.5001.50015.013051.5001.50015.013061.5001.50015.0130[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]施工過程中抗拔承載力滿足系數(shù):1.000施工過程中整體穩(wěn)定滿足系數(shù):1.000[整體穩(wěn)定設(shè)計(jì)條件]考慮地下水作用的計(jì)算方法：總應(yīng)力法圓弧滑動(dòng)坡底截止深度(m)：0.000(m)圓弧滑動(dòng)坡底滑面步長(m)：1.000(m)----------------------------------------------------------------------[設(shè)計(jì)結(jié)果]----------------------------------------------------------------------[抗拔承載力設(shè)計(jì)結(jié)果]工況開挖深度破裂角支錨號(hào)設(shè)計(jì)長度最大長度(工況)拉力標(biāo)準(zhǔn)值Kt×Nkj(m)(度)(m)(m)Nkj(kN)(kN)11.10042.9022.80046.61土釘4.5104.510(2)27.343.734.50049.51土釘4.2854.510(2)12.820.52土釘1.5691.569(3)34.054.446.20050.81土釘4.3184.510(2)12.319.62土釘1.8111.811(4)14.623.33土釘1.8791.879(4)49.979.957.90051.61土釘4.3534.510(2)11.919.12土釘2.3822.382(5)14.222.63土釘1.8901.890(5)18.229.24土釘2.3412.341(5)72.8116.569.40052.01土釘4.3864.510(2)11.718.82土釘2.8762.876(6)13.922.33土釘2.3982.398(6)17.928.74土釘2.0082.341(5)26.742.75土釘2.6582.658(6)91.1145.8710.00052.21土釘4.4004.510(2)11.718.72土釘3.0733.073(7)13.822.13土釘2.5992.599(7)17.828.54土釘2.2132.341(5)26.542.45土釘1.8262.658(6)35.256.36土釘2.0432.043(7)76.2121.9[整體穩(wěn)定設(shè)計(jì)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)支錨號(hào)支錨長度12.4432.13510.7952.13425.170-0.98614.1257.13517.00035.212-10.72017.18017.21417.00025.00044.619-12.63617.20019.35517.00025.00035.00054.728-12.43213.72917.56717.00025.00035.00044.00063.404-14.94714.69220.69617.00025.00035.00044.00053.00073.530-15.38913.94420.76717.00025.00035.00044.00053.00062.000[土釘選筋計(jì)算結(jié)果]鋼筋類型對(duì)應(yīng)關(guān)系：d-HPB300,D-HRB335,E-HRB400,F-RRB400,G-HRB500,P-HRBF335,Q-HRBF400,R-HRBF500土釘號(hào)土釘拉力(抗拉)土釘拉力(穩(wěn)定)計(jì)算鋼筋面積配筋配筋面積143.7258.5718.11E401256.6254.4357.1991.91E361017.9379.9345.2958.91E361017.94116.5267.3742.61E32804.25145.8171.3475.81E32804.26121.9113.0313.91E28615.8[噴射混凝土面層計(jì)算][計(jì)算參數(shù)]厚度：150(mm)混凝土強(qiáng)度等級(jí):C25配筋計(jì)算as:15(mm)水平配筋:d8@150豎向配筋:d8@150配筋計(jì)算as:15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