圆形水池（顶管井）设计计算书

共8页第圆形水池（顶管井）设计计算书执行规范:《混凝土结构设计规范》(GB50010-2010(2015年版)),本文简称《混凝土规范》《建筑地基基础设计规范》(GB50007-2011),本文简称《地基规范》《建筑结构荷载规范》(GB50009-2012),本文简称《荷载规范》《给水排水工程构筑物结构设计规范》(GB50069-2002),本文简称《给排水结构规范》《给水排水工程钢筋混凝土水池结构设计规程》(CECS138-2002),本文简称《水池结构规程》钢筋：d-HPB300;D-HRB335;E-HRB400;F-RRB400;G-HRB500;Q-HRBF400;R-HRBF5001设计资料1.1基本信息圆形水池形式:敞口池内液体重度10.0kN/m3浮托力折减系数1.00裂缝宽度限值0.20mm抗浮安全系数1.10水池的几何尺寸如下图所示:1.2荷载信息地面活荷载:4.00kN/m2活荷载组合系数:0.90荷载分项系数:自重:1.20其它恒载:1.27地下水压:1.27其它活载:1.40荷载准永久值系数:顶板活荷载:0.40地面堆积荷载:0.50地下水压:1.00温(湿)度作用:1.00活载调整系数:其它活载:1.00壁面温差:10.0℃温差内力折减系数:0.65混凝土线膨胀系数:0.000010不考虑温度材料强度折减1.3混凝土与土信息土天然重度:18.00kN/m3土饱和重度:20.00kN/m3土内摩擦角ψ:30.0度地基承载力特征值fak=180.00kPa基础宽度和埋深的地基承载力修正系数ηb=1.00、ηd=1.00混凝土等级:C20纵筋级别:HRB400混凝土重度:25.00kN/m3配筋调整系数:1.20纵筋保护层厚度:位置顶板(mm)池壁(mm)底板(mm)上侧(内侧)-4040下侧(外侧)-40402计算内容（1）荷载标准值计算（2）抗浮验算（3）地基承载力计算（4）内力及配筋计算（5）抗裂度、裂缝计算（6）混凝土工程量计算3荷载标准值计算底板:恒荷载:池壁自重:24.75kN/m2活荷载:池壁:恒荷载:池内水压力:15.00kN/m2池外侧土压力(地下水位处):27.00kN/m2池外侧土压力(池底):28.67kN/m2活荷载:池外水压力(池底):5.00kN/m2温差作用:20.30kN.m/m地面活荷载:1.33kN/m24地基承载力验算:计算基础底面的压力：池壁内壁圆面积:Aic=πR2=3.14×3.0002=28.27m2池壁外壁圆面积:At=π(R＋t)2=3.14×(3.000＋0.35)2=35.26m2池壁自重Gs=γc×As×H=25.00×6.98×5.000=872.77kN底板自重Gb=γc×Ab×t2=25.00×35.26×0.30=264.42kN水池自重Gp=Gs＋Gb=872.77＋264.42=1137.20kN池内水自重Gw=pw×Aic=15.00×28.27=424.12kN基础底面的压力pk=(Gp＋Gw)/Ab=1561.31/35.26=44.28kPa基础宽度大于3m或埋置深度大于0.5m，需修正承载力特征值计算地基承载力特征值修正值：fa=fak＋ηbγ(b-3)＋ηdγm(d-0.5)水池底板底下的土的重度γ=γ饱和－γ水=20.00-10.00=10.00kN/m3水池底板底以上土的加权平均重度γm=[γ土×Hw＋(γ饱和－γ水)×(Hb－Hw)]／Hb=[18.00×4.500＋(20.00－10.00)×(5.300－4.500)]／5.300=16.79kN/m3fa=180.00＋1.00×10.00×(6.000－3)＋1.00×16.79×(5.300－0.5)=290.60kPapk=44.28kPa<fa=290.60kPa地基承载力满足5抗浮验算:水池自重Gp=1137.20kN总自重W=Gp=1137.20kN池体浸入水中高度h=0.80m水池底面积Ab=35.26m2浮托力折减系数ηfw=1.00总浮力F=ηfwγ水hAb=1.00×10.00×0.80×35.26=282.05kNW/F=4.03>Kf=1.10,抗浮验算满足。6内力及配筋计算:(轴力:kN弯矩:kN.m面积:mm2配筋面积:mm2/m)池壁:弯矩外侧受拉为正，轴力受拉为正顶板:下侧受拉为正,底板:上侧受拉为正按《给水排水工程结构设计手册》静力计算查表池壁的约束条件:上端自由,下端固定池壁内力计算查表系数H2/dt=5.0002/6.350×0.35=11.25荷载组合:（1）闭水试验：池内有水，池外无土（2）使用时池内无水：池内无水，池外有土（3）正常使用：池内有水，池外有土闭水试验：基本组合:1.27×池内水作用＋1.40×温度作用标准组合:1.00×池内水作用＋1.00×温度作用准永久组合:1.00×池内水作用＋1.00×温度作用设计值/标准值/准永久值位置竖向弯矩环向弯矩环向轴力0.00H0.00/0.00/0.0023.69/16.92/16.92276.95/197.79/197.790.10H7.08/5.06/5.0624.87/17.76/17.7640.97/29.69/29.690.20H17.88/12.77/12.7726.67/19.05/19.05-37.11/-25.61/-25.610.30H25.35/18.10/18.1027.91/19.94/19.94-34.43/-23.19/-23.190.40H28.83/20.60/20.6028.49/20.35/20.35-6.61/-2.81/-2.810.50H29.98/21.43/21.4328.68/20.49/20.4919.57/16.38/16.380.60H30.08/21.54/21.5428.70/20.51/20.5135.78/28.31/28.310.70H30.10/21.59/21.5928.71/20.52/20.5238.96/30.56/30.560.75H30.05/21.56/21.5628.70/20.51/20.5136.19/28.35/28.350.80H29.78/21.36/21.3628.65/20.48/20.4830.48/23.87/23.870.85H29.21/20.92/20.9228.56/20.41/20.4122.39/17.54/17.540.90H28.02/19.99/19.9928.36/20.25/20.2512.69/9.94/9.940.95H26.01/18.41/18.4128.02/19.99/19.994.06/3.18/3.181.00H22.97/16.02/16.0227.52/19.59/19.590.00/0.00/0.00使用时池内无水：基本组合:1.27×池外土作用＋1.27×地下水作用＋0.90×1.40×(温度作用＋地面活荷载)标准组合:1.00×池外土作用＋1.00×地下水作用＋0.90×1.00×(温度作用＋地面活荷载)准永久组合:1.00×池外土作用＋1.00×地下水作用＋1.00×温度作用＋0.50×地面活荷载设计值/标准值/准永久值位置竖向弯矩环向弯矩环向轴力0.00H-0.00/-0.00/-0.0021.32/15.23/16.92245.40/175.36/196.850.10H6.38/4.55/5.0622.38/15.99/17.7613.03/8.34/12.530.20H16.25/11.61/12.8924.03/17.16/19.07-77.61/-57.46/-59.300.30H22.97/16.41/18.2325.15/17.96/19.96-96.47/-72.04/-74.140.40H25.83/18.44/20.5025.62/18.30/20.34-93.58/-71.13/-71.720.50H26.13/18.62/20.7525.67/18.33/20.38-91.22/-70.55/-69.730.60H24.87/17.66/19.7825.47/18.17/20.22-91.47/-71.51/-69.920.70H23.30/16.45/18.5525.20/17.97/20.01-87.14/-68.37/-66.740.75H22.85/16.11/18.2025.13/17.91/19.95-79.26/-62.23/-60.770.80H22.94/16.19/18.2625.14/17.93/19.96-66.34/-52.10/-50.910.85H23.91/16.96/19.0025.30/18.05/20.09-48.72/-38.27/-37.420.90H26.37/18.89/20.9025.71/18.38/20.40-27.83/-21.85/-21.390.95H30.79/22.36/24.3026.45/18.96/20.97-8.91/-7.00/-6.851.00H37.66/27.76/29.6027.60/19.85/21.85-0.00/-0.00/-0.00正常使用：基本组合:1.27×池内水作用＋1.27×池外土作用＋1.27×地下水作用＋0.90×1.40×(温度作用＋地面活荷载)标准组合:1.00×池内水作用＋1.00×池外土作用＋1.00×地下水作用＋0.90×1.00×(温度作用＋地面活荷载)准永久组合:1.00×池内水作用＋1.00×池外土作用＋1.00×地下水作用＋1.00×温度作用＋0.50×地面活荷载设计值/标准值/准永久值位置竖向弯矩环向弯矩环向轴力0.00H0.00/0.00/0.0021.32/15.23/16.92244.94/175.00/196.490.10H6.38/4.55/5.0622.38/15.99/17.7618.92/12.98/17.170.20H16.20/11.58/12.8524.02/17.16/19.06-65.26/-47.74/-49.570.30H22.92/16.38/18.1925.14/17.96/19.95-77.37/-57.00/-59.100.40H25.87/18.47/20.5325.63/18.31/20.34-67.47/-50.57/-51.150.50H26.39/18.83/20.9625.72/18.37/20.41-58.38/-44.69/-43.870.60H25.55/18.19/20.3125.58/18.26/20.31-53.86/-41.89/-40.310.70H24.47/17.37/19.4725.40/18.12/20.17-49.79/-38.96/-37.330.75H24.15/17.13/19.2225.34/18.08/20.12-45.02/-35.27/-33.810.80H24.14/17.13/19.2125.34/18.08/20.12-37.59/-29.47/-28.270.85H24.65/17.54/19.5925.43/18.15/20.19-27.57/-21.62/-20.770.90H26.03/18.62/20.6325.66/18.33/20.36-15.77/-12.36/-11.890.95H28.52/20.58/22.5226.07/18.66/20.67-5.05/-3.96/-3.811.00H32.43/23.64/25.4826.72/19.17/21.170.00/0.00/0.00池壁配筋及裂缝、抗裂度验算:位置计算As配筋实际As裂缝宽度抗裂度竖向内侧700.0E14@180855.20.12竖向外侧700.0E14@180855.20.12环向内侧700.0E14@180855.20.111.00环向外侧700.0E14@180855.20.111.00池壁的竖向最大裂缝宽度:0.12<=0.20裂缝满足要求池壁的环向最大抗裂度:1.00<=act×ftk=1.34抗裂度满足要求池壁的环向最大裂缝宽度:0.11<=0.20裂缝满足要求底板内力计算方法:按《水池结构规程》6.2.4或6.2.5计算底板的计算半径:R=3.175m底板的约束条件:周边固定荷载组合：使用时池内无水：基本组合:1.20×自重S=1.20×24.75=29.71kN/m2准永久组合:自重S=24.75=24.75kN/m2底板配筋及裂缝验算:位置设计值/准永久值计算As配筋实际As裂缝宽度径向板中上21.84/18.20600.0E14@200733.00.11径向板中