管道壓力計(jì)算

1、壓 力 管 道 計(jì) 算一一、管管徑徑計(jì)計(jì)算算SD144-85水電站壓力鋼管設(shè)計(jì)規(guī)范1 1、經(jīng)經(jīng)濟(jì)濟(jì)流流速速參數(shù)計(jì)算結(jié)果工程應(yīng)用取值設(shè)計(jì)流量經(jīng)濟(jì)流速管徑58854.7322 2、經(jīng)經(jīng)驗(yàn)驗(yàn)公公式式鋼材材料力學(xué)性能參數(shù)計(jì)算結(jié)果材質(zhì)16設(shè)計(jì)流量經(jīng)濟(jì)流速管徑Q21521588-4.792Q2352353 3、彭彭德德舒舒公公式式材質(zhì)16參數(shù)計(jì)算結(jié)果16Mn345設(shè)計(jì)流量設(shè)計(jì)水頭管徑15MnT88455.006利用材料屈服強(qiáng)度二二、管管壁壁厚厚度度計(jì)計(jì)算算a a、按按內(nèi)內(nèi)水水壓壓力力初初步步計(jì)計(jì)算算參 數(shù)鋼管內(nèi)徑跨中總水頭 鋼材屈服強(qiáng)度鋼材材質(zhì)強(qiáng)度mmkpa折算系數(shù)54599000Q2350.44工程計(jì)算

2、取值0.015工程采用壁厚18b b1 1、穩(wěn)穩(wěn)定定要要求求管管壁壁厚厚度度40mm不滿(mǎn)足b b2 2、穩(wěn)穩(wěn)定定要要求求最最小小管管壁壁厚厚度度10mm滿(mǎn)足要求c c、不不設(shè)設(shè)加加勁勁環(huán)環(huán)，外外壓壓穩(wěn)穩(wěn)定定計(jì)計(jì)算算鋼材彈模壁厚內(nèi)徑臨界壓力抗外壓穩(wěn)定kpammm安全系數(shù)2.06E+08185.00019.2222722c c、設(shè)設(shè)加加勁勁環(huán)環(huán)，外外壓壓穩(wěn)穩(wěn)定定計(jì)計(jì)算算參 數(shù)鋼管平均半徑鋼材彈模壁厚加勁環(huán)間距泊松比2.5092.06E+080.01880.3計(jì)算過(guò)程是否滿(mǎn)足2倍大氣壓值1+n2*l2/3.142/r2/rn2-126.752471470.00717417324滿(mǎn)足條件三三、鋼鋼管管

3、受受力力分分析析參參數(shù)數(shù)輸輸入入?yún)^(qū)區(qū)水容重鋼材容重平均直徑壁厚管線與水平夾角9.8178.55.0180.01840軸軸力力計(jì)計(jì)算算每米水重每米鋼重水、管法向分力鎮(zhèn)墩間鋼管總跨數(shù)鋼管自重軸線分力192.61924.4151330.0606721.905伸縮節(jié)內(nèi)水壓力填料摩擦力 支墩鋼管摩阻 填料長(zhǎng)度總軸向力97.352419.05243665.0300.2-1903.339四四、管管壁壁應(yīng)應(yīng)力力分分析析1 1、跨跨中中斷斷面面( (計(jì)計(jì)算算點(diǎn)點(diǎn)度度管管壁壁外外緣緣應(yīng)應(yīng)力力最最大大）a、環(huán)向應(yīng)力161533.225b、軸應(yīng)力x1-6707.539xx1-1245.550-7953.09兩端固結(jié)M

4、443.389c、強(qiáng)度校核65870.848允許應(yīng)力111375滿(mǎn)足條件2 2、支支承承環(huán)環(huán)旁旁膜膜應(yīng)應(yīng)力力區(qū)區(qū)邊邊緣緣斷斷面面(=180(=180度度，剪剪應(yīng)應(yīng)力力xx=0)=0)a、環(huán)向應(yīng)力164161.385b、軸應(yīng)力x1-6707.539xx2-2490.801-9198.34兩端固結(jié)M-886.671c、強(qiáng)度校核69220.452允許應(yīng)力111375滿(mǎn)足條件3 3、加加勁勁環(huán)環(huán)及及其其旁旁管管壁壁a、加勁環(huán)截面尺寸肋高肋寬上翼板寬上翼板厚管壁等效翼緣0.30.0360.30.0180.165加勁環(huán)截面積 有效截面積截面慣性矩B10.01680.0228054.82E-040.7245

5、779430.907單支面積0.022805雙支面積0.028204668 截面慣性矩計(jì)算見(jiàn)截面幾何性質(zhì)計(jì)算軟件b、應(yīng)力驗(yàn)算M1N12x14.29283814451.8888030.7107102.908686 -6707.539鋼管內(nèi)壁應(yīng)力66914.585 鋼管外壁應(yīng)力 92335.95833 最大應(yīng)力值允許應(yīng)力111375是否滿(mǎn)足條件滿(mǎn)足條件4 4、支支承承環(huán)環(huán)及及其其旁旁管管壁壁a、支承環(huán)截面尺寸肋高肋寬支承板寬支承板厚管壁等效翼緣0.40.0360.4000.0180.16576055支承環(huán)截面積 有效截面積截面慣性矩B10.0222480.03541541.00E-030.6190

6、530780.889單支面積0.028215雙支面積0.03541538 截面慣性矩計(jì)算見(jiàn)截面幾何性質(zhì)計(jì)算軟件b、環(huán)向應(yīng)力水壓力223440.893kPa支承環(huán)TR的3計(jì)算斷面K1K2K1+B1*K2TR0-0.2387320.3180.044327599 58.958375667-0.2645960.124-0.15399601 -204.8239690-0.250.000-0.25-332.51505900.250.0000.25332.5150531130.2645964-0.1240.153996008 204.8239631800.2387324-0.318-0.0443276 -5

7、8.958376支承環(huán)M的4ZR10.2ZR20.182ZR3計(jì)算斷面K3K4MR4（kPa)管內(nèi)壁00.1112066 -0.068309886389.5485394 77843.128767-0.144060.125626419-499.2984-99774.34390-1.44E-160.2535.9116257 7176.18735901.443E-16-0.25-35.9116257 -7176.18731130.1440604 -0.125626419499.2983999 99774.343180-0.111207 0.068309886 -389.548539 -77843.1

8、29軸向應(yīng)力xx1-6707.538564x369175.676內(nèi)壁取正值 管外壁取負(fù)值-m/3.14*r2* 2490.8903x2計(jì)算表計(jì)算斷面x2(kPa)02490.8903267973.26839900.00000+900.00000-113-973.26839180-2490.89032c、強(qiáng)度校核c1、軸力產(chǎn)生應(yīng)力相當(dāng)應(yīng)力計(jì)算表計(jì)算斷面x（kPa)(2)+(3)(1)+(2)管內(nèi)外壁環(huán)外壁025105.66-4216.64827457.9025105.666717657.418-5734.27021116.7917657.429014051.891-6707.53918349.4

9、014051.899032829.894-6707.53936646.9832829.8911329224.368-7680.80733727.2229224.3718021776.125-9198.42927552.0821776.13允許應(yīng)力135675鋼管內(nèi)外壁是否滿(mǎn)足要求滿(mǎn)足條件鋼管外環(huán)是否滿(mǎn)足要求滿(mǎn)足條件最大應(yīng)發(fā)生部位90c2、軸力彎矩產(chǎn)生應(yīng)力相當(dāng)應(yīng)力計(jì)算表計(jì)算斷面x管內(nèi)壁管外壁環(huán)外壁管內(nèi)壁0102948.7995942.907-66749.2316 64959.0367-82116.93 -73137.234135391.1424 63441.419021228.07920582.

10、2225583.990178 62468.149025653.70726299.56441297.79514 6246871 120019.020-88509.3571 61494.87180-56067-49061.122113631.0169 59977.25允許應(yīng)力172125最大應(yīng)力171859.6046應(yīng)力是否滿(mǎn)足滿(mǎn)足條件5 5、抗抗外外壓壓穩(wěn)穩(wěn)定定分分析析5.15.1管管壁壁抗抗外外壓壓穩(wěn)穩(wěn)定定分分析析臨界壓力265.8951是否滿(mǎn)足滿(mǎn)足條件5.25.2加加勁勁環(huán)環(huán)抗抗外外壓壓穩(wěn)穩(wěn)定定分分析析p12.00E+03是否滿(mǎn)足p2255.63596滿(mǎn)足條件5.3

11、5.3支支承承環(huán)環(huán)抗抗外外壓壓穩(wěn)穩(wěn)定定分分析析p13928.06是否滿(mǎn)足p2396.99385滿(mǎn)足條件單位Mpa16404010020519522521516252536325315390375225000計(jì)算結(jié)果水頭焊縫壁厚乘數(shù)系數(shù)mm1.250.90.015是否滿(mǎn)足穩(wěn)定要求不滿(mǎn)足計(jì)算結(jié)果臨界波數(shù)臨界壓力壓 力 管 道 計(jì) 算SD144-85水電站壓力鋼管設(shè)計(jì)規(guī)范工程應(yīng)用取值5鋼材材料力學(xué)性能參 數(shù)5265.895103是否重新計(jì)算否加勁環(huán)間距含附件材料重量系數(shù)伸縮節(jié)水頭81.145填料摩擦系數(shù)支墩摩擦系數(shù)0.30.1套管徑差取兩倍的壁厚環(huán)重心至內(nèi)壁環(huán)重心至鋼管中心距離0.15b2.65是否

12、滿(mǎn)足2倍大氣壓值滿(mǎn)足條件0.106x2x3-2490.80179381.0412+內(nèi)緣-外緣92335.95833環(huán)重心至內(nèi)壁D環(huán)重心至鋼管中心距離0.2b2.7000.10831664.767557-5783.474957-9389.001412+9389.001412-5783.474957-1664.767557-0.236管外壁外環(huán)壁70837.24708-91854.892-90794.65211117733.7256530.330487-8467.9011+-6530.3304878467.90107-90794.65211-117733.72-70837.2470891854.8

13、918截面慣性矩計(jì)算見(jiàn)截面幾何性質(zhì)計(jì)算軟件截面慣性矩計(jì)算見(jiàn)截面幾何性質(zhì)計(jì)算軟件4（kPa)叛斷最大內(nèi)外壁應(yīng)力最大外環(huán)應(yīng)力36646.9832829.990（kPa)最大應(yīng)力管外壁環(huán)外壁管內(nèi)壁管外壁環(huán)外壁管內(nèi)壁管外壁-73392.324090170.257 147081.4 -66749.2316 126403 171860-74909.9460126402.59 74039.51 135391.1424-75883.214055016.551 87998.5 5583.990178-75883.214054386.042 91900.08 41297.79514-76856.482011175

14、6.55 171859.6 -88509.3571-78374.1040100516.28 68588.43 113631.0169171859.6046管外壁取負(fù)值x叛斷發(fā)生部位管外環(huán)135391計(jì)算時(shí)自行查看最大應(yīng)力發(fā)生部位171860最大應(yīng)力壓 力 管 道 計(jì) 算計(jì)算結(jié)果基本資料計(jì)算水頭流量管徑管壁厚鋼材材料4588518Q235跨數(shù)加勁環(huán)間距管線水平夾角屈服強(qiáng)度6840225000環(huán)尺寸項(xiàng)目型式肋高肋寬上翼板寬上翼板厚加勁環(huán)倒T型0.30.0360.30.018支承環(huán)工字型0.40.0360.40.018支承方式側(cè)向滾動(dòng)程序未涉及應(yīng)力計(jì)算斷面最大應(yīng)力允許應(yīng)力是否滿(mǎn)足跨中65870.85

15、111375.00滿(mǎn)足條件支承環(huán)邊緣69220.45111375.00滿(mǎn)足條件加勁環(huán)及旁管壁92335.96111375.00滿(mǎn)足條件支承環(huán)及旁壁171859.60172125.00滿(mǎn)足條件抗外壓穩(wěn) 定項(xiàng)目臨界應(yīng)力安全系數(shù)是否滿(mǎn)足管壁265.902滿(mǎn)足條件加勁環(huán)255.642滿(mǎn)足條件支承環(huán)396.992滿(mǎn)足條件制作加工最小厚度10mm滿(mǎn)足要求計(jì)算依據(jù)SD144-85水電站壓力鋼管設(shè)計(jì)規(guī)范鋼材的允許應(yīng)力（折減系數(shù)）應(yīng)力區(qū)域膜應(yīng)力區(qū)局部應(yīng)力區(qū)荷載組合基本特殊基本特殊產(chǎn)生應(yīng)力的內(nèi)力軸力軸力和彎矩軸力軸力和彎矩允許應(yīng)力明管0.550.70.670.850.81地下0.670.9壩內(nèi)0.670.8/0.

16、9K1maxK1最小值67-0.26460-0.238731-0.238742-0.238783-0.238844-0.238935-0.239036-0.239177-0.239328-0.23959-0.239710-0.2399311-0.2401812-0.2404513-0.2407414-0.2410515-0.2413816-0.2417317-0.2421118-0.242519-0.2429120-0.2433421-0.2437822-0.2442423-0.2447224-0.2452125-0.2457126-0.2462327-0.2467628-0.247329-0

17、.2478530-0.2484231-0.2489832-0.2495633-0.2501434-0.2507335-0.2513236-0.2519237-0.2525138-0.2531139-0.2537140-0.254341-0.2548942-0.2554843-0.2560644-0.2566345-0.257246-0.2577547-0.258348-0.2588349-0.2593550-0.2598551-0.2603352-0.260853-0.2612554-0.2616855-0.2620856-0.2624657-0.2628158-0.2631459-0.2634460-0.263761-0.2639462-0.2641463-0.