圆形水池设计(江东水厂浓缩池)

圆形水池设计(江东水厂浓缩池)项目名称构件编号日期设计校对审核执行规范:《混凝土结构通用规范》(GB55008-2021),本文简称《混凝土通用规范》《混凝土结构设计规范》(GB50010-2010(2015年版)),本文简称《混凝土规范》《建筑与市政地基基础通用规范》(GB55003-2021),本文简称《地基通用规范》《建筑地基基础设计规范》(GB50007-2011),本文简称《地基规范》《工程结构通用规范》(GB55001-2021)《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-HRBF500-----------------------------------------------------------------------1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:10.00kN/m2活荷载组合系数:0.90荷载分项系数:自重:1.30其它恒载:1.30地下水压:1.50其它活载:1.50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度修正后的地基承载力特征值fa=120.00kPa混凝土等级:C30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)-3535下侧(外侧)-35402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:18.51kN/m2覆土自重:1.61kN/m2活荷载:地面活荷载:1.79kN/m2池壁:恒荷载:池内水压力:42.00kN/m2池外侧土压力(池底):3.00kN/m2活荷载:温差作用:23.89kN.m/m地面活荷载:3.33kN/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=3.14×3.5002=38.48m2池壁外壁圆面积:At=π(R＋t)2=3.14×(3.500＋0.35)2=46.57m2池壁自重Gs=γc×As×H=25.00×8.08×5.200=1050.63kN底板自重Gb=γc×Ab×t2=25.00×56.75×0.40=567.45kN水池自重Gp=Gs＋Gb=1050.63＋567.45=1618.08kN挑出部分覆土重Gexs=γ土×(Ab－At)×(Hb－t2)=18.00×(56.75－46.57)×(0.900－0.40)=91.61kN池内水自重Gw=pw×Aic=42.00×38.48=1616.35kN外挑部分活荷载Gqm=qm×(Ab-At)=10.00×(56.75-46.57)=101.79kN基础底面的压力pk=(Gp＋Gw＋Gexs＋Gqm)/Ab=3427.82/56.75=60.41kPa修正后的地基承载力特征值为：120.00kPapk=60.41kPa<fa=120.00kPa地基承载力满足5抗浮验算:地下水位位于基底以下,无需验算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=5.2002/7.350×0.35=10.51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:1.30×池内水作用＋1.50×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0.00H0.00/0.00/0.0029.86/19.91/19.91347.84/231.71/231.710.10H8.48/5.65/5.6531.27/20.85/20.8570.24/48.84/48.840.20H21.63/14.41/14.4133.46/22.31/22.31-18.02/-7.76/-7.760.30H31.18/20.77/20.7735.06/23.37/23.37-5.18/3.12/3.120.40H36.20/24.16/24.1635.89/23.93/23.9342.31/37.17/37.170.50H38.39/25.70/25.7036.26/24.19/24.1988.86/70.42/70.420.60H39.61/26.66/26.6636.46/24.35/24.35118.80/91.85/91.850.70H40.62/27.49/27.4936.63/24.49/24.49121.96/93.68/93.680.75H40.71/27.59/27.5936.64/24.50/24.50111.82/85.80/85.800.80H40.00/27.06/27.0636.53/24.42/24.4293.41/71.64/71.640.85H38.19/25.69/25.6936.22/24.19/24.1968.13/52.25/52.250.90H34.38/22.78/22.7835.59/23.70/23.7038.58/29.59/29.590.95H27.96/17.85/17.8534.52/22.88/22.8812.28/9.42/9.421.00H18.32/10.45/10.4532.91/21.65/21.650.00/0.00/0.00使用时池内无水：基本组合:1.30×池外土作用＋0.90×1.50×(温度作用＋地面活荷载)标准组合:1.00×池外土作用＋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×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/-0.0026.87/17.92/19.91298.42/198.96/227.120.10H7.63/5.09/5.6528.15/18.76/20.8527.65/18.29/26.560.20H19.62/13.08/14.5330.14/20.10/22.33-73.13/-49.06/-48.080.30H28.21/18.81/20.8931.57/21.05/23.39-83.82/-56.35/-55.970.40H32.34/21.56/23.9632.26/21.51/23.90-63.96/-43.28/-41.200.50H33.46/22.30/24.8232.45/21.63/24.04-43.09/-29.52/-25.760.60H33.07/22.03/24.5732.38/21.59/24.00-29.53/-20.59/-15.980.70H32.31/21.51/24.0532.26/21.50/23.91-21.89/-15.48/-11.110.75H32.06/21.34/23.8732.22/21.47/23.88-18.45/-13.10/-9.240.80H31.95/21.27/23.7632.20/21.46/23.87-14.68/-10.46/-7.340.85H32.08/21.37/23.8032.22/21.48/23.87-10.37/-7.40/-5.200.90H32.55/21.71/24.0232.30/21.53/23.91-5.83/-4.16/-2.940.95H33.45/22.35/24.4832.45/21.64/23.99-1.81/-1.30/-0.921.00H34.88/23.38/25.2432.69/21.81/24.11-0.00/-0.00/-0.00正常使用：基本组合:1.30×池内水作用＋1.30×池外土作用＋0.90×1.50×(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＋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×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0.00H0.00/0.00/0.0026.87/17.92/19.91296.62/197.57/225.740.10H7.63/5.09/5.6528.15/18.76/20.8547.27/33.38/41.650.20H19.48/12.97/14.4230.12/20.08/22.31-31.71/-17.19/-16.210.30H28.06/18.69/20.7831.55/21.03/23.37-19.72/-7.05/-6.660.40H32.56/21.73/24.1332.30/21.54/23.9323.41/23.93/26.010.50H34.49/23.09/25.6132.62/21.76/24.1765.87/54.29/58.050.60H35.50/23.90/26.4432.79/21.90/24.3193.84/74.31/78.930.70H36.33/24.60/27.1432.93/22.02/24.4398.75/77.32/81.700.75H36.41/24.69/27.2232.94/22.03/24.4491.22/71.25/75.120.80H35.82/24.25/26.7432.84/21.96/24.3676.62/59.78/62.900.85H34.33/23.10/25.5332.59/21.77/24.1656.15/43.77/45.970.90H31.15/20.63/22.9532.07/21.35/23.7331.88/24.85/26.060.95H25.78/16.46/18.5831.17/20.66/23.0010.19/7.94/8.311.00H17.69/10.16/12.0229.82/19.61/21.910.00/0.00/0.00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@180855.20.11---竖向外侧700.0E14@180855.20.11---环向内侧700.0E14@180855.20.121.18环向外侧802.1E14@1501026.30.121.18池壁的竖向最大裂缝宽度:0.11<=0.20裂缝满足要求池壁的环向最大抗裂度:1.18<=act×ftk=1.75抗裂度满足要求池壁的环向最大裂缝宽度:0.12<=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=3.675m底板的约束条件:简支+池壁弯矩荷载组合：闭水实验：基本组合:S=1.30×18.51＋1.30×(1616.35／56.75－1616.35／38.48)=6.50kN/m2准永久组合:S=1.00×18.51＋1.00×(1616.35／56.75－1616.35／38.48)=5.00kN/m2池壁传递的弯矩:设计值/准永久值=-18.32/-10.45kN.m/m使用时池内无水：基本组合:1.30×自重＋1.30×覆土自重＋0.90×1.50×地面活荷载S=1.30×18.51＋1.30×1.61＋0.90×1.50×1.79=28.59kN/m2准永久组合:自重＋覆土自重＋0.50×地面活荷载S=18.51＋1.61＋0.50×1.79=21.03kN/m2池壁传递的弯矩:设计值/准永久值=-34.88/-25.24kN.m/m取两种组合中最大值为控制内力。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41.54/30.96800.0E14@160962.10.10径向板中下-0.94/0.00800.0E14@160962.10.00径向板边上0.00/0.00800.0E14@160962.10.00径向板边下-34.88/-25.24800.0E14@160962.10.08环向板中上41.54/30.96800.0E14