J1-J5段桩锚挡墙验算（ZC1#-ZC11#桩）

4.3基坑边坡J1-J5段此段边坡为岩土混合边坡：长约45m，边坡高约17m。根据地勘提供赤平投影图分析边坡稳定性受层面与裂隙LX1组合交线影响，直立开挖后边坡不稳定，将沿层面与裂隙LX1组合交线发生楔形滑移破坏，边坡土层段土岩分界面为内倾，土层段稳定为可能沿土体内圆弧滑动破坏，边坡坡顶为已建市政公路挡墙，为重要建构筑物应当考虑主动受力的支挡形式。设计采用桩锚挡墙进行支护，桩截面尺寸为1.6m×2m方形桩，桩心间距4米，锚索采用每孔锚索采用16*715.20-1860-GB/T5224-2003预应力钢绞线。锚孔直径φ250mm，倾角35°，每孔锚索施加预应力900KN，边坡先施工抗滑桩，抗滑桩施工完成后施工锚索，锚索施工严格按照逆作法施工，桩间采用300mm厚挡板连接，桩顶设置冠梁，坡顶及坡脚设置截排水沟。J1-J5段桩板挡墙验算（ZC1#-ZC11#桩）坡顶限制使用荷载30Kpa.锚索刚度计算排数锚索束数锚索自由段长度锚索倾角锚索刚度(MN/m)1169.7353021683536.43166.33546.2------------------------------------------------------------------------1.总控制信息路基型式路堤地区类型一般地区支护类型桩＋板结构重要性系数1.10抗震设计烈度(度)---配筋计算---水平地震系数Kh---水上地震角(度)---水下地震角(度)---重要性修正系数Ci---综合影响系数Cz---2.坡线、土层和水位1)坡线信息坡线数4坡线水平投影竖向投影坡线长坡线仰角荷载数序号长(m)长(m)(m)(°)10.0001.5001.50090.000025.5000.0005.5000.000030.0005.6005.60090.0000420.0000.00020.0000.0000坡线上无荷载2)土层信息桩前是否有横坡无横坡桩前横坡角(度)0.000桩后横坡角(度)0.000结构与土摩擦角(度)12.500嵌固段以上土层数:2序号地层地层重度浮重度粘聚力内摩擦综合内摩土摩阻计算m,c,K承载KHηR类型厚(m)(kN/m3)(kN/m3)(kPa)角(°)擦角(°)力(kPa)方法力(kPa)(MPa)1岩层10.00025.000---0.00052.000---120.000K法70.0003318.0000.5000.30010.0002土层16.00020.000---2.00028.000---120.000m法10.000120.000---------嵌固段土层数:1序号地层地层重度粘聚力内摩擦综合内摩土摩阻计算m,c,K承载KHηR类型厚(m)(kN/m3)(kPa)角(°)擦角(°)力(kPa)方法力(kPa)(MPa)1岩层15.00025.0000.00052.000---400.000K法70.0003318.0000.5000.30010.0003)水位信息非浸水地区，无水位信息3.计算模型1)桩前覆土模型：弹簧模型4.滑坡推力相关信息5.桩信息1)桩基本信息桩前地面以上长度(m)17.000嵌固点深度(m)0.000悬臂长度(m)17.000嵌固长度(m)7.000截面形状矩形桩宽b(m)1.600桩高h(m)2.000桩中心距(m)4.000T型翼缘ㄨ桩底支承条件自由坡线数42)桩配筋信息桩作用综合分项系数1.00桩混凝土强度等级C30桩纵筋合力点到外皮距离(mm)100桩容重(kN/m^3~)25.00桩纵筋级别HRB400桩箍筋级别HRB4005.板信息1)板尺寸信息桩间板类型直板桩间板的种类数1板的搭接长度(m)0.500板类型号板厚(mm)板宽(m)板块数13001.000202)板配筋信息板作用综合分项系数1.000混凝土强度等级C30钢筋合力点到边缘距离(mm)30板纵筋级别HRB400板选筋钢筋直径166.结构上自定义荷载以及荷载组合1)桩顶自定义荷载桩顶自定义荷载数：02)桩荷载组合[滑坡推力(一般)组合]荷载号荷载名称是否参与调整系数1桩自重√1.0002桩顶恒载√1.0003桩顶活载√1.0004桩后滑坡推力√1.000[库仑土压力(一般)组合]荷载号荷载名称是否参与调整系数1桩自重√1.0002桩顶恒载√1.0003桩顶活载√1.0004桩后主动土压力√1.3502)板荷载组合[滑坡推力(一般)组合]荷载号荷载名称是否参与调整系数1板后滑坡推力√1.000[库仑土压力(一般)组合]荷载号荷载名称是否参与调整系数1板后主动土压力√1.350------------------------------------------------------------------------原始条件:=====================================================================库仑土压力(一般情况)(一)桩身内力计算按实际墙背计算得到:第1破裂角：25.578(度)Ea=872.298(kN)Ex=851.621(kN)Ey=188.800(kN)作用点到嵌固点距离Zy=8.343(m)第1嵌固段地层计算方法:K法 背侧——为挡土侧；面侧——为非挡土侧。背侧最大弯矩=1023.095(kN-m)距离桩顶5.000(m)面侧最大弯矩=1080.155(kN-m)距离桩顶15.400(m)最大剪力=878.821(kN)距离桩顶11.000(m)最大位移=-9(mm)第1道锚索水平拉力=1107.376(kN)距离桩顶5.000(m)第2道锚索水平拉力=1104.537(kN)距离桩顶8.000(m)第3道锚索水平拉力=1110.196(kN)距离桩顶11.000(m)点号距顶距离弯矩剪力位移土反力(m)(kN-m)(kN)(mm)(kPa)1-0.0000.0000.000-9.400.00020.2000.065-0.982-9.300.00030.4000.524-3.929-9.200.00040.6001.768-8.840-9.100.00050.8004.191-15.715-9.000.00061.0008.185-24.554-8.900.00071.20014.143-35.358-8.790.00081.40022.459-48.126-8.690.00091.60033.525-62.859-8.590.000101.80047.734-79.556-8.490.000112.00065.478-98.217-8.390.000122.20087.151-118.843-8.290.000132.400113.146-141.433-8.190.000142.600143.855-165.987-8.090.000152.800179.672-192.506-7.990.000163.000220.989-220.989-7.890.000173.200268.198-251.436-7.790.000183.400321.694-283.848-7.690.000193.600381.868-318.224-7.590.000203.800449.114-354.564-7.490.000214.000523.825-392.869-7.390.000224.200606.393-433.138-7.290.000234.400697.211-475.371-7.200.000244.600796.672-519.569-7.100.000254.800905.170-565.731-7.010.000265.0001023.095-613.857-6.910.000275.200929.368443.428-6.820.000285.400845.855391.373-6.730.000295.600772.950337.354-6.640.000305.800711.045281.370-6.550.000316.000660.533223.422-6.460.000326.200621.920161.807-6.370.000336.400596.20494.282-6.290.000346.600584.63820.307-6.200.000356.800588.511-60.120-6.110.000367.000609.116-146.998-6.030.000377.200647.741-240.327-5.950.000387.400705.677-340.107-5.860.000397.600784.214-446.338-5.780.000407.800884.642-559.020-5.700.000418.0001008.252-678.153-5.620.000428.200935.426300.800-5.540.000438.400888.362168.765-5.460.000448.600864.37189.967-5.390.000458.800848.63567.261-5.310.000469.000837.51643.815-5.240.000479.200831.15919.628-5.160.000489.400829.714-5.299-5.090.000499.600833.328-30.967-5.020.000509.800842.150-57.375-4.950.0005110.000856.328-84.524-4.880.0005210.200876.009-112.413-4.810.0005310.400901.342-141.043-4.740.0005410.600932.476-170.413-4.680.0005510.800969.557-200.523-4.610.0005611.0001012.734878.821-4.550.0005711.200840.117847.230-4.490.0005811.400673.892814.898-4.430.0005911.600514.207781.825-4.370.0006011.800361.211748.013-4.310.0006112.000215.051713.459-4.250.0006212.20075.877678.165-4.190.0006312.400-56.165642.131-4.130.0006412.600-180.927605.356-4.070.0006512.800-298.259567.841-4.010.0006613.000-408.014529.586-3.950.0006713.200-510.043490.589-3.890.0006813.400-604.200450.853-3.830.0006913.600-690.335410.376-3.770.0007013.800-768.301369.158-3.710.0007114.000-837.949327.200-3.640.0007214.200-899.132284.502-3.580.0007314.400-951.700241.063-3.510.0007414.600-995.507196.883-3.450.0007514.800-1030.404151.963-3.380.0007615.000-1056.243106.303-3.310.0007715.200-1072.87659.902-3.240.0007815.400-1080.15512.761-3.170.0007915.600-1077.931-35.121-3.090.0008015.800-1066.057-83.743-3.020.0008116.000-1044.385-133.106-2.940.0008216.200-1012.766-183.209-2.860.0008316.400-971.052-234.052-2.790.0008416.600-919.095-285.636-2.710.0008516.800-856.748-337.961-2.630.0008617.000-783.862-367.884-2.54-0.0008717.200-709.545-353.772-2.46-172.2118817.400-642.304-320.293-2.38-166.3438917.600-581.378-290.622-2.29-160.4199017.800-526.006-264.785-2.21-154.4439118.000-475.415-242.808-2.12-148.4219218.200-428.833-224.713-2.03-142.3579318.400-385.481-210.522-1.95-136.2569418.600-344.575-200.252-1.86-130.1219518.800-305.330-193.921-1.77-123.9569619.000-266.957-191.544-1.68-117.7649719.200-228.663-193.133-1.59-111.5489819.400-189.654-198.700-1.50-105.3129919.600-149.134-208.255-1.42-99.06010019.800-106.019-215.408-1.33-92.79410120.000-62.514-236.930-1.24-86.52010220.200-20.196-199.968-1.15-80.23910320.40017.189-166.273-1.06-73.95710420.60046.598-129.448-0.97-67.67610520.80068.968-95.889-0.88-61.39910621.00084.953-65.591-0.79-55.12810721.20095.205-38.553-0.70-48.86510821.400100.374-14.770-0.61-42.60910921.600101.1135.763-0.52-36.36311021.80098.06923.050-0.43-30.12511122.00091.89337.095-0.34-23.89611222.20083.23147.903-0.25-17.67411322.40072.73155.478-0.16-11.46011422.60061.04059.824-0.08-5.25311522.80048.80260.9420.010.95011623.00036.66358.8370.107.14811723.20025.26753.5100.1913.34311823.40015.25944.9620.2819.53511923.6007.28333.1940.3725.72612023.8001.98218.2060.4631.91712124.000-0.0004.9540.5438.107桩底竖向合力=4501.05(kN)，桩底面积A=3.200(m2)桩底所在土层承载力=3318.00(kPa)故桩的竖向地基承载力满足。(二)桩身配筋计算点号距顶距离面侧弯矩背侧弯矩剪力面侧纵筋背侧纵筋箍筋(m)(kN.m)(kN.m)(kN)(mm2)(mm2)(mm2//m)1-0.000.000.000.00064006400152520.200.000.07-0.98264006400152530.400.000.52-3.92964006400152540.600.001.77-8.84064006400152550.800.004.19-15.71564006400152561.000.008.18-24.55464006400152571.200.0014.14-35.35864006400152581.400.0022.46-48.12664006400152591.600.0033.52-62.859640064001525101.800.0047.73-79.556640064001525112.000.0065.48-98.217640064001525122.200.0087.15-118.843640064001525132.400.00113.15-141.433640064001525142.600.00143.86-165.987640064001525152.800.00179.67-192.506640064001525163.000.00220.99-220.989640064001525173.200.00268.20-251.436640064001525183.400.00321.69-283.848640064001525193.600.00381.87-318.224640064001525203.800.00449.11-354.564640064001525214.000.00523.82-392.869640064001525224.200.00606.39-433.138640064001525234.400.00697.21-475.371640064001525244.600.00796.67-519.569640064001525254.800.00905.17-565.731640064001525265.000.001023.10-613.857640064001525275.200.00929.37443.428640064001525285.400.00845.86391.373640064001525295.600.00772.95337.354640064001525305.800.00711.04281.370640064001525316.000.00660.53223.422640064001525326.200.00621.92161.807640064001525336.400.00596.2094.282640064001525346.600.00584.6420.307640064001525356.800.00588.51-60.120640064001525367.000.00609.12-146.998640064001525377.200.00647.74-240.327640064001525387.400.00705.68-340.107640064001525397.600.00784.21-446.338640064001525407.800.00884.64-559.020640064001525418.000.001008.25-678.153640064001525428.200.00935.43300.800640064001525438.400.00888.36168.765640064001525448.600.00864.3789.967640064001525458.800.00848.6467.261640064001525469.000.00837.5243.815640064001525479.200.00831.1619.628640064001525489.400.00829.71-5.299640064001525499.600.00833.33-30.967640064001525509.800.00842.15-57.3756400640015255110.000.00856.33-84.5246400640015255210.200.00876.01-112.4136400640015255310.400.00901.34-141.0436400640015255410.600.00932.48-170.4136400640015255510.800.00969.56-200.5236400640015255611.000.001012.73878.8216400640015255711.200.00840.12847.2306400640015255811.400.00673.89814.8986400640015255911.600.00514.21781.8256400640015256011.800.00361.21748.0136400640015256112.000.00215.05713.4596400640015256212.200.0075.88678.1656400640015256312.40-56.170.00642.1316400640015256412.60-180.930.00605.3566400640015256512.80-298.260.00567.8416400640015256613.00-408.010.00529.5866400640015256713.20-510.040.00490.5896400640015256813.40-604.200.00450.8536400640015256913.60-690.340.00410.3766400640015257013.80-768.300.00369.1586400640015257114.00-837.950.00327.2006400640015257214.20-899.130.00284.5026400640015257314.40-951.700.00241.0636400640015257414.60-995.510.00196.8836400640015257514.80-1030.400.00151.9636400640015257615.00-1056.240.00106.3036400640015257715.20-1072.880.0059.9026400640015257815.40-1080.150.0012.7616400640015257915.60-1077.930.00-35.1216400640015258015.80-1066.060.00-83.7436400640015258116.00-1044.380.00-133.1066400640015258216.20-1012.770.00-183.2096400640015258316.40-971.050.00-234.0526400640015258416.60-919.100.00-285.6366400640015258516.80-856.750.00-337.9616400640015258617.00-783.860.00-367.8846400640015258717.20-709.540.00-353.7726400640015258817.40-642.300.00-320.2936400640015258917.60-581.380.00-290.6226400640015259017.80-526.010.00-264.7856400640015259118.00-475.420.00-242.8086400640015259218.20-428.830.00-224.7136400640015259318.40-385.480.00-210.5226400640015259418.60-344.570.00-200.2526400640015259518.80-305.330.00-193.9216400640015259619.00-266.960.00-191.5446400640015259719.20-228.660.00-193.1336400640015259819.40-189.650.00-198.7006400640015259919.60-149.130.00-208.25564006400152510019.80-106.020.00-215.40864006400152510120.00-62.510.00-236.93064006400152510220.20-20.200.00-199.96864006400152510320.400.0017.19-166.27364006400152510420.600.0046.60-129.44864006400152510520.800.0068.97-95.88964006400152510621.000.0084.95-65.59164006400152510721.200.0095.20-38.55364006400152510821.400.00100.37-14.77064006400152510921.600.00101.115.76364006400152511021.800.0098.0723.05064006400152511122.000.0091.8937.09564006400152511222.200.0083.2347.90364006400152511322.400.0072.7355.47864006400152511422.600.0061.0459.82464006400152511522.800.0048.8060.94264006400152511623.000.0036.6658.83764006400152511723.200.0025.2753.51064006400152511823.400.0015.2644.96264006400152511923.600.007.2833.19464006400152512023.800.001.9818.20664006400152512124.000.000.004.954640064001525=====================================================================各点的配筋包络结果点号距顶距离面侧纵筋背侧纵筋箍筋(m)(mm2)(mm2)(mm2/m)1-0.0064006400152520.2064006400152530.4064006400152540.6064006400152550.8064006400152561.0064006400152571.2064006400152581.4064006400152591.60640064001525101.80640064001525112.00640064001525122.20640064001525132.40640064001525142.60640064001525152.80640064001525163.00640064001525173.20640064001525183.40640064001525193.60640064001525203.80640064001525214.00640064001525224.20640064001525234.40640064001525244.60640064001525254.80640064001525265.00640064001525275.20640064001525285.40640064001525295.60640064001525305.80640064001525316.00640064001525326.20640064001525336.40640064001525346.60640064001525356.80640064001525367.00640064001525377.20640064001525387.40640064001525397.60640064001525407.80640064001525418.00640064001525428.20640064001525438.40640064001525448.606400640015254