建排設(shè)計(jì)計(jì)算說(shuō)明書(shū)

3、計(jì)算說(shuō)明書(shū)給水設(shè)計(jì)計(jì)算該建筑位于南昌市，共83.0m，總高24m。用閱歷法估算建筑所需水壓為H=(n+1)×40=〔8+1〕×40=360KPa，大于室外給水管網(wǎng)保證的工作水壓為?？紤]到用水量不大，為削減用地面積，不分區(qū)，承受氣壓水罐和水泵加壓氣壓給水設(shè)備供水。生活用水量計(jì)算Q=mqddQ=KQ/Th hd經(jīng)查該建筑屬于一般住宅Ⅱ型q Kd

2.8~2.324h.〔P31上限m3~44/4×6×8=192人最高日用水量：d Q=mq=d 最高日最高時(shí)用水量：h hdQ=KQ/T=h hd2.32、給水系統(tǒng)水力計(jì)算住宅生活給水管道設(shè)計(jì)秒流量計(jì)算公式：q=0.2·U·N 查表知：浴g g，盆水嘴N=1.N=0.5N=0.75N=1.0.一般住宅Ⅱ型U 參考值2.0-3.5,這里取3.0計(jì)算則a=1.939×10-20

〔N-〕0.49)/c

0.5NgN

計(jì)算出U、q公稱直徑〔mm〕公稱直徑〔mm〕15～２０２５～４０５０～７０≥80≤1.0≤1.2≤1.5≤1.8生活給水管道的水流速度2-3DN水頭損失i。JL-1水力計(jì)算表：計(jì)算當(dāng)量總同時(shí)設(shè)計(jì)秒管徑v每米管長(zhǎng)管長(zhǎng)沿程水沿程水管段〔Ng〕出流流量DN〔m/s〕沿程水頭〔〕頭損失頭損失編號(hào)概率U(%)qg〔mm〕i〔m〕hy=iL累計(jì)hy〔L/s〕〔kPa〕〔kPa〕0-10.751000.150150.750.5642.01.1281.1281-21.25900.225200.660.3141.60.5021.6302-32.25680.306200.790.4228.03.3765.0063-43.25570.370250.560.1652.40.3965.4024-53.25570.370250.560.1653.00.4955.8975-66.50410.533250.800.3083.00.9246.8216-79.75340.663320.650.1633.00.4897.3107-813.0300.780320.760.2153.00.6457.9558-916.25270.878320.860.2703.00.818.7659-1019.50240.936400.560.0943.00.2829.04710-1122.75231.046400.600.1064.60.469.507水力計(jì)算表：計(jì)算管段編號(hào)當(dāng)量總〔Ng〕同時(shí)出流概率U(%)設(shè)計(jì)秒流量qg管徑DN〔mm〕v〔m/s〕每米管長(zhǎng)沿程水頭i〔m〕管長(zhǎng)〔〕沿程水頭損失h =iLy沿程水頭損失累計(jì)hy〔L/s〕〔kPa〕〔kPa〕0-111000.2150.990.9443.63.62-10.751000.15150.750.56421.1284.7281-31.75770.27200.680.3311.60.52965.2583-42.25680.306200.820.4542.41.0906.3484-53.25570.370250.560.16581.3207.6685-63.25570.370250.560.16530.4958.1636-76.5410.533250.800.30830.9429.0877-89.75340.663320.650.16330.4899.5768-913.0300.780320.760.21530.64510.2219-1016.25270.878320.860.27030.8111.03110-1119.5240.936400.560.09430.28211.31311-1222.75231.046400.600.10630.31811.631JL-4〔9〕給水管網(wǎng)水力計(jì)算表：編號(hào)總數(shù)Ng同時(shí)出流概率U(%)設(shè)計(jì)秒流 量QgDN(mm)流速v(m/s)iL管段沿程水頭損失(L/s)(kPa/m)(m)Hy=iL損失累(kPa)計(jì)∑Hy0-10.751000.15150.750.5641.60.9020.9021-21.25900.225151.121.1882.02.3763.2782-32.25680.306200.820.454146.3569.6343-43.25570.371250.560.1652.40.39610.034-56.5410.533250.800.3083.00.92410.9545-69.75340.663320.650.1633.00.48911.4436-713300.78320.760.2153.00.64512.0887-816.25270.878320.860.2703.00.8112.8988-919.5240.936320.920.3033.00.90913.8079-1022.75231.047321.030.3734.61.71615.523JL-5〔8〕給水管網(wǎng)水力計(jì)算表：計(jì)算管段當(dāng)總量數(shù)同出時(shí)流設(shè)計(jì)秒流 量管徑DN(m流速v(m/s)每長(zhǎng)米沿管程管段長(zhǎng)度管段沿程水頭損失管段編號(hào)Ng概率Qg(L/s)m)水頭損L(m)Hy=iL(kP沿程U(%)失a)水頭i(kPa/m)損失累計(jì)∑Hy0’-1’1.0i(kPa/m)損失累計(jì)∑Hy0’-1’1.01000.2150.990.944.03.763.761’-2’2.0720.288200.760.3962.00.7924.5522’-4’2.5650.325200.860.4920.20.0984.653’-4’0.751000.15150.750.564004.654’-5’3.25570.371250.560.1651.00.1654.8155’-6’6.5410.533250.800.3083.00.9245.7396’-7’9.75340.663320.650.1633.00.4896.2287’-8’13300.78320.760.2153.00.6456.8738’-9’16.25270.878320.860.2703.00.817.6839’-10’19.5240.936320.920.3033.00.9098.59210’-1122.75231.047321.030.3734.61.71610.308計(jì)算計(jì)算管段編號(hào)當(dāng)總Ng量數(shù)同出概時(shí)流率設(shè)計(jì)秒流 量Qg(L/s)管徑DN(mm)流速v(m/s)每長(zhǎng)水米沿頭管程損管段長(zhǎng)度L(m)管段沿程水頭損失Hy=iL(kPU(%)失a)水頭i(kPa/m)損失累計(jì)∑Hy0.751000.15150.750.5641.60.9020.9021.25900.225151.121.1882.02.3763.2782.25680.306200.820.454114.9948.2723.25570.371250.560.1652.40.3968.6686.5410.533250.800.3083.00.9249.5929.75340.663320.650.1633.00.48910.08113300.78320.760.2153.00.64510.72616.25270.878320.860.2703.00.8111.53619.5240.936320.920.3033.00.90912.4459“-1222.75231.047321.030.3734.61.71614.161選取不利點(diǎn)位JL-10點(diǎn)處，計(jì)算有：H1=202.1kpa，H2=15.84kpa，H3=0.389kpa，H4=50kpaH=H1+H2+H3+H4=268.34kpa<320kpa，符合要求。消防系統(tǒng)的設(shè)計(jì)計(jì)算1、本設(shè)計(jì)屬于底層建筑一般住宅，室外消防栓用水量15L/s,室內(nèi)消5L/S5L/s,2.5L/s,同2支。2、消防系統(tǒng)的設(shè)計(jì)1、室外消火栓系統(tǒng)為低壓制，消防用水由街道上的消火栓供給2)、室內(nèi)消火栓系統(tǒng)為臨時(shí)高壓制，系統(tǒng)由蓄水池-消防水泵-屋頂水3組水泵接合器，高位水箱一個(gè)，消防水池一個(gè)。系統(tǒng)設(shè)置消火栓泵2臺(tái)〔其中1臺(tái)備用工作時(shí)，備用泵自動(dòng)投入工作。3〕10min10min后消防用水量由消防泵供給。3GB50049-95〔2023年版〕7.6條可不設(shè)自動(dòng)噴水滅火系統(tǒng)。4、依據(jù)建筑內(nèi)壁各局部的使用功能，相應(yīng)配置手提式干粉滅火器，以協(xié)作消防給水滅火系統(tǒng)。5、消防管道安裝與布置、消火栓給水管道的安裝與生活給水管道根本一樣。、管材承受熱浸鍍鋅鋼管，溝槽式機(jī)械接頭。、消火栓口徑為50mm槍噴口直徑16mm，水龍帶為麻織，直徑50mm，長(zhǎng)25m4〕為了使每層消火栓出水流量接近設(shè)計(jì)值，在栓口靜壓超過(guò)0.5Mpa的消火栓前設(shè)置減壓孔板。5〕1.1m?！捕?、設(shè)計(jì)計(jì)算消火栓給水系統(tǒng)計(jì)算消火栓的布置52.5m28.1m22.1m。按《高層民用建筑設(shè)計(jì)防火2個(gè)消火栓的水槍充實(shí)水柱同時(shí)到達(dá)。CR=CLdLs=0.820+3=19mLs=0.7Sk=0.7(H1-H2)/sin45°=0.7〔3-1.1〕/sin45°=3.0m消火栓承受單排布置時(shí)，其間距為R2b21R2b2192〔6+2.52據(jù)此每個(gè)單元只用布置一個(gè)消火栓就可滿足要求，詳見(jiàn)系統(tǒng)圖。水槍噴嘴處所需的水壓H查表，水槍噴口直徑選16mm，水槍系數(shù)值為0.0124；充實(shí)水柱 要求HmH不小于10m，選 =10m，水槍試驗(yàn)系數(shù) 值為1.20.Hm f水槍噴嘴處所需水壓Hq=fHm/〔1-fHm〕=1.2010/〔1-0.01241.2010〕=14.9mH水槍噴嘴的出流量

2O=149kPa16mmB0.793.BHq0.793BHq0.79314.9xh水帶阻力

=3.3L/s＞2.5L/s16mm50mm水帶，襯膠水帶阻力較小，室內(nèi)消火栓水帶多為襯膠水A50mm水帶阻力系數(shù)Az

值為0.00677.水帶阻力損失：d z d s h=A L L q 2=0.00677d z d s 消火栓口所需的水壓Hxhdk=HqhHHxhdk

=14.9+1.47+2=18.37mH

2O=183.7kPa校核設(shè)置的消防儲(chǔ)水高位水箱最低水位高程25.8m，最不利點(diǎn)消火栓栓口高程19.1m25.8-19.1=6.7mH2O=67kPa。按《高條規(guī)定，可不設(shè)增壓設(shè)施。水力計(jì)算HHh2x22HHhHHxh0H

q d

=18.37mk

2O=183.7kPaHxh1Hxh0H(01點(diǎn)的消火栓間距)+h(0~1管段的水頭損失)=18.37+3.0+0.50=21.87mH2O1點(diǎn)的水槍射流量BHq1BHq1qHxh1H

=q2

xh1

/B+A

Ld

q2xh1+210.79321.8710.79321.8720.0067720qxh1

=3.18L/s進(jìn)展消火栓給水系統(tǒng)水力計(jì)算時(shí)，按圖13-15以枝狀管路計(jì)算，配管水力計(jì)算成果見(jiàn)下表hhy=17.656量L(m)DNV(m/s)i(kPa/m)iL(kPa)段q(L/s)0-13.183.01000.3680.0640.1921-26.6617.01000.7690.1272.1592-313.3218.81001.540.4758.933-413.325.11001.540.4756.375H管路總水頭損失為Hw

=17.6561.1=19.422kPaH消火栓給水系統(tǒng)所需總水壓 應(yīng)為HxHH

=19.110-(-1.60)10+183.7+19.14=377.84kPax按消火栓滅火總用水量Q=13.32L/s，選消防泵80DL50-202型2臺(tái)，1用1備。xQb=8.89~20.28L/sHb=32~43mH2O(320~430kPa)，N=11kW。2套水泵接合器。消防水箱10min的室內(nèi)消防水量計(jì)算。f xf xV=q T 60/1000=13.321060/1000=7.992m3f xf x取12m3

S3S151〔〕15m3

3600mm2400mm2023mm。滿足《高層民用建筑設(shè)計(jì)防火標(biāo)準(zhǔn)》GB50045-95〔2023版〕7.4.7.1條規(guī)定。消防水箱內(nèi)的儲(chǔ)水由生活用水提升泵從生活用水儲(chǔ)水水池提升布滿備用。消防儲(chǔ)水池Vf=13.3223600/1000=96m3。排水系統(tǒng)的計(jì)算屋頂與大氣連接，一般適用于多層住宅。立管的計(jì)算WL-1：管段編號(hào)大便器衛(wèi)生器具名稱數(shù)量洗手盆浴盆洗滌盆排水當(dāng)量總值設(shè)計(jì)秒流量管徑De(m坡i度備注Np=3.6Np=0.3Np=3Np=1NpQ(l/s)m)①②③④⑤⑥1-2110.33500.025⑦2-5111.30.535000254-54-5116.61.66750.015WL-2：管段編號(hào)大便器衛(wèi)生器具名稱數(shù)量洗手盆浴盆洗滌盆排水當(dāng)量總值設(shè)計(jì)秒流量管徑De(m坡i度備注Np=3.6Np=0.3Np=3Np=1NpQ(l/s)m)①②③④⑤⑥1-2110.33500.025⑦2-31141.6750.0153-51117.62.03750.0154-510.30.10500.025WL-3：管段編號(hào)大便器衛(wèi)生器具名稱數(shù)量洗手盆浴盆洗滌盆排水當(dāng)量總值設(shè)計(jì)秒流量管徑De(m坡i度備注Np=3.6Np=0.3Np=3Np=1NpQ(l/s)m)①②③④⑤⑥1-2110.33500.025⑦2-5111.30.535000254-5116.61.66750.015WL-3：管段編號(hào)大便器衛(wèi)生器具名稱數(shù)量洗手盆浴盆洗滌盆排水當(dāng)量總值設(shè)計(jì)秒流量管徑De(m坡i度備注Np=3.6Np=0.3Np=3Np=1NpQ(l/s)m)①②③④⑤⑥1-2110.33500.025⑦2-31141.6750.0153-51117.62.03750.0154-510.30.1