給水管網(wǎng)課程設計計算書

目錄一、工程概況二、用水量計算三、管網(wǎng)水力計算1.比流量計算2.沿線流量計算3.節(jié)點流量4.管徑的確定5.流量分配:四、管網(wǎng)平差校核五、水泵的選擇六、圖紙七、參考文獻一、工程概況⒈條件圖：街區(qū)平面圖一張（帶等高線）；⒉河北為新城區(qū)，居住區(qū)街坊人口為20萬人，用水量定額220L/（cap.d），用水普及率95％，時變化系數(shù)為1.5；河南為老城區(qū)，居住區(qū)街坊人口12萬人，用水量定額200L/（cap.d），用水普及率90％，時變化系數(shù)為1.6。3.用水大戶集中流量見下表：新城區(qū)單位名稱項目機械廠化工廠棉紡廠肉聯(lián)廠醫(yī)院1北車站印染廠學校1集中流量（m3/d）1800600035004600150080025001500老城區(qū)加工廠煉鋼廠染料廠鋼纜廠醫(yī)院2南車站塑料廠學校2集中流量（m3/d）2500420022001800120060036001200根據(jù)上述資料設計老城區(qū)的給水管網(wǎng)。二、用水量計算1、給水系統(tǒng)的設計用水量一般是指設計年限內最高日用水量，包括：（1）綜合生活用水（包括居民生活用水和公共建筑用水）；（2）工業(yè)企業(yè)生產用水和工作人員生活用水；（3）消防用水；（4）澆灑道路和綠地用水；（5）未預見用水量及管網(wǎng)漏失水量。2、計算公式:Qd——最高日設計用水量Q1——居住區(qū)綜合生活用水量Q2——工業(yè)企業(yè)生活用水量Q3——生產用水量Q4——澆灑道路和綠化用水量其中：最高日綜合生活用水量Q1＝qNf；澆灑道路用水量Q3：用水量按每平方米路面每次1.5L計算；每天澆灑3次；綠化用水量Q4：綠化用水量按2L/d.m2計算；城市的未預見水量和管網(wǎng)漏失水量按最高日用水量的15％～25%計算。河南為老城區(qū)，居住區(qū)街坊人口12萬人，用水量定額200L/（cap.d），用水普及率90％，時變化系數(shù)為1.6。用水大戶集中流量見下表：老城區(qū)加工廠煉鋼廠染料廠鋼纜廠醫(yī)院2南車站塑料廠學校2集中流量（m3/d）2500420022001800120060036001200老城區(qū)規(guī)劃總面積約為470公頃。其中綠化面積71公頃，道路面積80公頃。Q1=200×120000×90％=21600000（L/d）=21600（m3/d）Q2=2500+4200+2200+1800+1200+600+3600+1200=17300（m3/d）Q3=800000×1.5×3=3600000（L/d）=3600（m3/d）Q4=710000×2=1420000（L/d）=1420（m3/d）最高日設計流量Qd：Qd＝1.2×（Q1+Q2+Q3+Q4）＝1.2×（21600+17300+3600+1420）=52704（m3/d）Qd——最高日設計用水量Q1——居住區(qū)綜合生活用水量Q2——工業(yè)企業(yè)集中用水量Q3——用澆灑道路水量Q4——綠化用水量最高日最高時設計流量Qh＝(1000×1.6×52704)÷（24×3600）=976（L/s）消防用水量：根據(jù)《建筑設計防火規(guī)范》該城市消防用水量定額為45L/s，同時火災次數(shù)為2次。城市消防用水量為：三、管網(wǎng)水力計算比流量計算qs＝(Qh—∑q)/∑L=(976-200.23)/15112=0.05133Qh——為最高日最大時用水量L/s∑q——為大用戶集中流量L/s∑L——管網(wǎng)總的有效長度m沿線流量計算qi-j＝qsＬi-j

Ｌi-j—有效長度；mqs—比流量沿線流量計算表

管段編號實際長度（mm）有效長度（mm）沿線流量（LL/s）1-249024512.581-377138619.811-572072036.962-689444722.943-464032016.434-51009100951.795-664564533.125-81096109656.264-753526813.767-861361331.478-947847824.548-11193393347.899-1295047524.387-1088944522.846-9110755428.4410-1368934517.7210-1158458429.9811-1245745723.4611-1470470436.1412-1594547324.2813-1673762031.8316-1753553527.4613-1461761731.6714-1762762732.1817-1874148224.7414-1576476439.2315-1854027013.86合計1968315112775.777（三）節(jié)點流量qi＝α∑q１折算系數(shù)取α＝０.５節(jié)點流量表

節(jié)點節(jié)點流量（LL/s）節(jié)點節(jié)點流量（LL/s）134.671064.21217.761182.62366.731236.06440.9913822.28589.071469.61642.251538.69759.501629..65893.9971749..13959.511819..30（四）、管徑的確定管徑與設計流量的關系：q＝Ａv＝πＤ2v／４Ｄ＝（4q/πv）公式中D—管段管徑，m；q—管段計算流量，m３/s；Ａ—管段過水斷面面積，m２v—設計流速，m/s；設計中按經(jīng)濟流速來確定管徑進行平差，確定實際管徑。平均經(jīng)濟流速與管徑的確定管徑／mm平均經(jīng)濟流速速／（m/s）Ｄ＝100～～400D≥4000.6～０..90.9～1..4（五）、流量分配:流量分配如下：1.．最大時流量初步分配最大時設計流量976L/s，流量初步分配如下表：最大時流量分配環(huán)編號管長管徑流量初步分配配影響0.0110411-3771600311.111213-4244500244.388214-5100930050.1231-5720600-320.1112421-5720600-320.11115-664525030.3446-2894600-292.335211-2490600-310.11121434-7535400153.277217-8623300-48.14458-51096500-250.88244-5100930050.121445-881096500250.82238-9478250-30.21169-61107600-280.444216-5645250-30.3442457-10889400141.9112110-1158420020.31711-8933400-138.99268-761330048.143468-11933400138.922511-12457250-30.188812-9950500-190.772219-847825030.2144710-1368930057.392113-14617300-50.211914-11705350-106.779810-11584200-20.31154811799714-15764250-30.7441015-12945400-124.4482111-1245725030.1864913-1673720025.322116-17535100-4.332117-14627200-17.7111014-13617300-50.211741014-1762720017.71917-18741250-35.7552118-15540300-55.0552114-1576425030.748管網(wǎng)平差結果（一）：平差表(一)======================================================================迭代次數(shù)=18======================================================================環(huán)號=1閉合差=-.002----------------------------------------------------------------------管段號管長管徑流速流量1000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)----------------------------------------------------------------------1-3771600.99279.362.091.61.00583-42445001.08212.633.14.77.00364-51009300.23-16.13.36-.37.02271-57206001.26-355.132.79-2.01.0057sqtotal=.038dq=-.02======================================================================環(huán)號=2閉合差=-.005----------------------------------------------------------------------管段號管長管徑流速流量1000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------1-55720060001..263555.132.7992.001.000575-6664552550..50244.391.8551.119.044886-22894460001..02-2899.082.233-1.999.000691-22490060001..09-3066.842.499-1.222.00040sqtottal=.0665dqq=--.04=======================================================================================環(huán)號=33閉合差=-..004---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------4-7535540001..491877.776.7003.558.011917-862333000..15-100.77.188-.111.011048-51096650001..15-2255.543.511-3.884.011704-5100993000..23166.13.366.337.02227sqtottal=.0669dqq=--.03=======================================================================================環(huán)號=44閉合差=-..007---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------5-81096650001..152255.543.5113.884.011708-947882550..35-177.16.988-.447.022739-6110776000..96-2711.221.988-2.119.000816-564552550..50-244.391.855-1.119.04488sqtottal=.1001dqq=--.03=======================================================================================環(huán)號=55閉合差=-..002---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------7-100889940001..111399.044.3773.888.0227910-11158442000..0411.40.044.002.0115211-88933340001..10-1377.964.300-4.002.022918-761333000..15100.77.188.111.01102sqtottal=.0882dqq=--.01=======================================================================================環(huán)號=66閉合差=-..005---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------8-11193340001.110137..9644.304.022.0299111-11245772550..79-388.734.300-1.996.0550712-9995005000..99-1944.552.666-2.553.011309-847882550..35177.16.988.447.02273sqtottal=.1220dqq=--.02=======================================================================================環(huán)號=77閉合差=-..002---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------10-113689930001..04733.425.6443.889.0553013-11461773000..49-344.671.422-.888.0225314-11170553550..99-955.474.244-2.999.0331311-11058442000..04-11.40.044-.002.01152sqtottal=.1225dqq=--.01=======================================================================================環(huán)號=88閉合差=-..004---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------11-11470553550..99955.474.2442.999.0331314-11576442550..57-288.152.400-1.883.0665015-11294554000..95-1199.773.311-3.113.0226112-11145772550..79388.734.3001.996.05507sqtottal=.1773dqq=--.01=======================================================================================環(huán)號=99閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------13-11673772000..82255.816.1994.556.1776716-11753551000..49-33.845.900-3.116.8222217-11462772000..62-199.343.644-2.229.1118114-11361773000..49344.671.422.888.02253sqtottal=1.1442dqq=.00=======================================================================================環(huán)號=100閉合差=-..002---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------14-11762772000..62199.343.6442.229.1118117-11874112550..69-333.633.311-2.446.0773018-11554003000..75-522.933.088-1.666.0331415-11476442550..57288.152.4001.883.06650sqtottal=.2888dqq=.00=======================================================================================附：附平差圖圖(一)２．最大時加加消防流量量初步分配配在控控制點17跟控制點18點上分別別加上455L/S的流量。設設計流量加加上消防用用水量900L/s。進行流流量的初步步分配，如如下表：最大時加加消防流量量初步分配配表環(huán)編號管長管徑流量初步分配配影響0.0110411-3771600311.111213-4244500244.388214-5100930050.1231-5720600-365.1112421-5720600365.11115-664525030.3446-2894600-337.335211-2490600-355.11121434-7535400153.277217-8623300-48.14458-51096500-295.88244-51009300-50.1221445-881096500295.82238-9478250-30.21169-61107600-325.444216-5645250-30.3442457-10889400141.9112110-1158420020.31711-8933400-183.99268-761330048.143468-11933400183.922511-12457250-30.188812-9950500-135.772219-847825030.2144710-1368930057.392113-14617300-50.211914-11705350-151.779810-11584200-20.31154811799714-15764250-30.7441015-12945400-169.4482111-1245725030.1864913-1673720025.322116-17535100-4.332117-14627200-62.7111014-1361730050.21741014-1762720062.71917-18741250-35.7552118-15540300-100.0052114-1576425030.748管網(wǎng)平差結果果（二）：：平差表（二二）=======================================================================================迭代次數(shù)=18=======================================================================================環(huán)號=11閉合差=-..003---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------1-3771160001..042955.212.3111.778.000603-4244450001..162288.483.599.888.000384-5100993000..18-133.07.255-.225.011941-5720060001..37-3888.723.355-2.441.00062sqtottal=.0335dqq=--.04=======================================================================================環(huán)號=22閉合差=-..009---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------1-5720060001..373888.723.3552.441.000625-664552550..55277.012.2221.443.055316-2894460001..17-3299.642.844-2.554.000771-2490060001..23-3477.402.677-1.331.00038sqtottal=.0771dqq=--.06=======================================================================================環(huán)號=33閉合差=-..005---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------4-7535540001..602000.567.6444.009.022047-862333000..09-66.58.088-.005.000728-51096650001..32-2599.573.922-4.330.011664-5100993000..18133.07.255.225.01194sqtottal=.0664dqq=--.04=======================================================================================環(huán)號=44閉合差=-..010---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------5-81096650001..322599.573.9224.330.011668-94782500.0031..37.01.011.004439-61107760001..11-3144.402.600-2.888.000926-56452500.555-27..0122.22--1.433.05331sqtottal=.0883dqq=--.06=======================================================================================環(huán)號=55閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------7-100889940001..171477.644.8994.334.0229410-11158442000..03.98.022.001.0111811-88933340001..25-1577.654.722-4.440.022798-761333000..0966.58.088.005.00071sqtottal=.0776dqq=--.01=======================================================================================環(huán)號=66閉合差=-..002---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------8-111933340001..251577.654.7224.440.0227911-11245772550..94-466.165.944-2.772.0558912-9995005000..80-1566.261.777-1.668.011089-847882550..03-11.37.011-.001.00043sqtottal=.1002dqq=--.01=======================================================================================環(huán)號=77閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------10-113689930001..17822.457.0114.883.0558613-11461773000..45-322.041.233-.776.0223814-11177053501.277-1122.1175..75-44.06..0332210-11158442000..03--.98.022-.001.01118sqtottal=.1227dqq=.00=======================================================================================環(huán)號=88閉合差=-..002---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------11-114705535501..271222.175.7554.006.0333214-11576442550..48-233.671.755-1.334.0556515-112945540001..38-1744.045.755-5.444.0331211-11245772550..94466.165.9442.772.05589sqtottal=.1880dqq=.00=======================================================================================環(huán)號=99閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------13-11677372001.03332.2219..3366.88..2135516-11753551000..3322.562.8551.552.5995717-114627720001..41-444.19114.611-9.116.2007314-11361773000..45322.041.233.776.02238sqtottal=1.0440dqq=.00=======================================================================================環(huán)號=100閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------14-177627720001..41444.19114.6119.116.2007317.97-477.386.244-4.662.0997618-155540030001..58-1111.68110.888-5.888.0552614.48233.671.7551.334.05565sqtottal=.4114dqq=.00=======================================================================================附：附平差圖圖(二)３．事故時流流量初步分分配事故時1-33管段斷開開，70％的設計計流量（即即683..2L/s）送向管管網(wǎng)。事事故初步流流量分配環(huán)編號管長管徑流量初步分配配影響0.019421-5720600358.333215-6645250-40.21136-2894600-288.117211-2490600-300.66021434-7535400-15.100217-8623300-60.54448-51096500-275.88934-5100930060.3021445-881096500275.89928-9478250-36.31159-61107600-140.441216-564525040.211457-108894003.792110-11584200-30.288611-8933400-185.88858-761330060.542468-11933400185.888411-12457250-37.811712-9950500-140.441219-847825036.3134710-13689300-10.8882113-14617300-60.688814-11705350-135.558710-1158420030.2844811588614-15764250-30.211915-12945400-77.3662111-1245725037.8154913-16737200-7.82116-17535100-28.5662117-14627200-56.388914-1361730060.68641014-1762720056.38817-18741250-6.562118-15540300-20.0772114-1576425030.217管網(wǎng)平差結果果（三）：：平差表（三三）=======================================================================================迭代次數(shù)=18=======================================================================================環(huán)號=11閉合差=-..001---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------1-55720060001..333766.313.1442.226.000605-6664552550..32155.70.844.554.033446-3389446000..96-2700.191.966-1.775.000653-11490060001..00-2822.622.133-1.005.00037sqtottal=.0551dqq=--.01=======================================================================================環(huán)號=22閉合差=-..004---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------4-7753554000..12144.83.088.004.000287-88623330001..10-777.736.288-3.991.055038-551096650001..06-2088.033.011-3.330.011595-441009930001..28900.237.1007.117.07794sqtottal=.1448dqq=--.01=======================================================================================環(huán)號=33閉合差=..000---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------5-881096650001..062088.033.0113.330.011598-9947882550..72-355.533.677-1.775.044939-66110776000..63-1788.34.911-1.001.000576-5564552550..32-155.70.844-.554.03344sqtottal=.1005dqq=.00=======================================================================================環(huán)號=44閉合差=-..006---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------7-11088994000..41500.91.699.662.0112110--1158442000..64-199.983.877-2.226.1113011--89933400.800-1100.0052..37-22.21..022118-7761330001.11077..7366.283.855.04995sqtottal=.1997dqq=--.02=======================================================================================環(huán)號=55閉合差=-..003---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------8-11193334400.801000.0552.3372..21.0022111--124457250.755--36.9943..94-11.80..0487712--99950500.911-1179.1122..28-22.17..012119-8847882550..72355.533.6771.775.04493sqtottal=.1332dqq=--.01=======================================================================================環(huán)號=66閉合差=-..008---------------------------------------------------------------------------------------管段號管長管徑流速流量10000I水頭損失sq(米)(毫米)(米/秒)(升/秒)(米)---------------------------------------------------------------------------------------10--13