压力管道计算表格

压力管道计算一、管径计算SD144-85水电站压力钢管设计规范1、经济流速计算结果工程应用取值设计流量经济流速管径58854.7322、经验公式钢材材料力学性能单位Mpa参数计算结果材质<1616~4040~100设计流量经济流速管径Q21521520519588--4.792Q2352352252153、彭德舒公式材质<1616~2525~36参数计算结果16Mn345325315设计流量设计水头管径15MnT39037588455.006利用材料屈服强度225000二、管壁厚度计算a、按内水压力初步计算参数计算结果钢管内径跨中总水头钢材屈服强度钢材材质强度水头焊缝壁厚mmkpa折算系数乘数系数mm54599000Q2350.441.250.90.015工程计算取值0.015工程采用壁厚18b1、稳定管壁厚度40mm不满足b2、稳定要求最小管壁厚度10mm满足要求c、不设加劲环，外压稳定计算钢材弹模壁厚内径临界压力抗外压稳定是否满足kpammm安全系数稳定要求2.06E08185.00019.2222722不满足c、设加劲环，外压稳定计算参数计算结果钢管平均半径钢材弹模壁厚加劲环间距泊松比临界波数临界压力2.5092.06E+080.01880.35265.8951026237计算过程是否满足2倍大气压值是否1+n2*l2/3.142/r2δ/rn2-1重新计算26.75247146590.00717417324满足条件否三、钢管受力分析参数输入区水容重钢材容重平均直径壁厚管线与水平夹角加劲环间距含附件材料重量系数伸缩节水头9.8178.55.0180.0184081.145轴力计算每米水重每米钢重水、管法向分力镇墩间钢管总跨数钢管自重轴线分力填料摩擦系数支墩摩擦系数192.61924.4151330.0606721.9050.30.1伸缩节内水压力填料摩擦力支墩钢管摩阻填料长度总轴向力套管径差97.352419.0524322043665.0300.2-1903.339取两倍的壁厚四、管壁应力分析1、跨中断面(计算点θ度管壁外缘应力最大）a、环向应力σθ161533.225b、轴应力σx1-6707.539σxσx1-1245.550-7953.09两端固结M443.389c、强度校核σ65870.848允许应力111375满足条件2、支承环旁膜应力区边缘断面(θ=180度，剪应力τxθ=0)a、环向应力σθ164161.385b、轴应力σx1-6707.539σxσx2-2490.801-9198.34两端固结M-886.671c、强度校核σ69220.452允许应力111375满足条件3、加劲环及其旁管壁a、加劲环截面尺寸肋高肋宽上翼板宽上翼板厚管壁等效翼缘环重心至内壁环重心至钢管中心距离0.30.0360.30.0180.1650.15加劲环截面积有效截面积截面惯性矩βB1b2.650.01680.0228054.82E-040.72457794340.9070.106单支面积0.022805双支面积0.0282046675截面惯性矩计算见截面几何性质计算软件b、应力验算M1N1βσθ2σx1σx2σx34.292838143951.88880277120.7107102.908686044-6707.539-2490.80179381.0412257955+内缘-外缘钢管内壁应力66914.5847328676钢管外壁应力92335.9583332638最大应力值92335.9583332638允许应力111375是否满足条件满足条件4、支承环及其旁管壁a、支承环截面尺寸肋高肋宽支承板宽支承板厚管壁等效翼缘环重心至内壁D环重心至钢管中心距离0.40.0360.4000.0180.16576055260.2支承环截面积有效截面积截面惯性矩βB1b2.7000.0222480.035415381.00E-030.61905307810.8890.108单支面积0.028215双支面积0.0354153799截面惯性矩计算见截面几何性质计算软件b、环向应力水压力σθ223440.8926602087kPa支承环TR的σθ3计算断面θK1K2K1+B1*K2TRσθ30-0.23873241460.3180.04432759958.95837564441664.767557043267-0.26459636680.124-0.1539960083-204.8239633244-5783.474957050790-0.250.000-0.25-332.5150528179-9389.0014117567+900.250.0000.25332.51505281799389.0014117567-1130.2645963668-0.1240.1539960083204.82396332445783.47495705071800.2387324146-0.318-0.044327599-58.9583756444-1664.7675570432支承环M的σθ4ZR10.2ZR20.182ZR3-0.236计算断面θK3K4MRσθ4（kPa)管内壁管外壁外环壁00.1112066101-0.0683098862389.548539445977843.128661235770837.2470817245-91854.891820258167-0.14406036640.125626419-499.2983998831-99774.342981063-90794.6521127673117733.72471765490-00.2535.91162570437176.18734782796530.3304865234-8467.901070437+900-0.25-35.9116257043-7176.1873478279-6530.33048652348467.901070437-1130.1440603664-0.125626419499.298399883199774.34298106390794.6521127673-117733.724717654180-0.11120661010.0683098862-389.5485394459-77843.1286612357-70837.247081724591854.8918202581轴向应力σxσx1-6707.5385637589σx369175.676内壁取正值管外壁取负值-m/3.14*r^2*δ2490.8903209782σx2计算计算断面θσx2(kPa)02490.8903267973.26839900.00000+900.00000-113-973.26839180-2490.89032c、强度校核c1、轴力产生应力相当应力计算表计算断面θ∑σθ∑σxσ（kPa)叛断最大内外壁应力最大外环应力(2)+(3)(1)+(2)管内外壁环外壁025105.6602172518-4216.64827457.9025105.6636646.9832829.96717657.4177031579-5734.27021116.7917657.429014051.891248452-6707.53918349.4014051.899032829.8940719654-6707.53936646.9832829.899011329224.3676172594-7680.80733727.2229224.3718021776.1251031655-9198.42927552.0821776.13允许应力135675钢管内外壁是否满足要求满足条件钢管外环是否满足要求满足条件最大应发生部位90c2、轴力弯矩产生应力相当应力计算表计算断面θ∑σθ∑σxσ（kPa)最大应力叛断发生部位管内壁管外壁环外壁管内壁管外壁环外壁管内壁管外壁环外壁管内壁管外壁管外环0102948.78887848895942.907-66749.231603006364959.03-73392.324090170.2565798719147081.431750269-66749.2316030063126402.58886912171859.604570113135391.142420812计算时自行查看最大应力发生部位67-82116.9252779051-73137.234135391.14242081263441.41-74909.9460126402.5888691274039.5081298461135391.1424208129021228.078596279920582.2225583.99017801562468.14-75883.214055016.551469016987998.49527705285583.9901780159025653.706724137426299.56441297.795142402362468.14-75883.214054386.041768938391900.079651452341297.7951424023113128998.710598322120019.020-88509.35710039561494.87-76856.4820111756.554360236171859.604570113-88509.357100395180-56067.0035580702-49061.122113631.01692342459977.25-78374.1040100516.28477030668588.4278567042113631.016923424171859.604570113允许应力172125最大应力171859.604570113171859.604570113应力是否满足满足条件5、抗外压稳定分析5.1管壁抗外压稳定分析临界压力265.8951026237是否满足满足条件5.2加劲环抗外压稳定分析p12.00E+03是否满足p2255.635960542满足条件5.3支承环抗外压稳定分析p13928.06是否满足p2396.9938471503满足条件压力管道计算计算结果基本资料计算水头流量管径管壁厚钢材材料4588518Q235跨数加劲环间距管线水平夹角屈服强度6840225000环尺寸项目型式肋高肋宽上翼板宽上翼板厚加劲环倒T型0.30.0360.30.018支承环工字型0.40.0360.40.018支承方式侧向滚动程序未涉及应力计算断面最大应力允许应力是否满足跨中65870.85111375.00满足条件支承环边缘69220.45111375.00满足条件加劲环及旁管壁92335.96111375.00满足条件支承环及旁壁171859.60172125.00满足条件抗外压稳定项目临界应力安全系数是否满足管壁265.902满足条件加劲环255.642满足条件支承环396.992满足条件制作加工最小厚度10mm满足要求计算依据SD144-85水电站压力钢管设计规范钢材的允许应力（折减系数）应力区域膜应力区局部应力区荷载组合基本特殊基本特殊产生应力的内力轴力轴力和弯矩轴力轴力和弯矩允许应力明管0.550.70.670.850.81地下0.670.9坝内0.670.8/0.9K1θθmaxK1最小值67-0.26459636680-0.23873241461-0.23874453342-0.23878087143-0.23884137314-0.23892594645-0.23903446226-0.23916675457-0.23932262118-0.23950182289-0.239704084110-0.239929093311-0.240176502612-0.240445928313-0.240736950814-0.241049115415-0.241381931816-0.241734874917-0.242107385118-0.242498868319-0.242908696320-0.243336207521-0.243780706522-0.244241465623-0.24471772424-0.245208689225-0.245713536826-0.246231411327-0.246761426528-0.247302665729-0.247854182930-0.248415002431-0.248984120332-0.249560504333-0.250143094634-0.250730804635-0.251322521236-0.251917105837-0.252513394438-0.25311019939-0.253706307640-0.254300485141-0.254891474342-0.25547799643-0.256058750444-0.256632417245-0.257197656946-0.257753111347-0.258297404148-0.258829142149-0.259346915750-0.259849299751-0.260334854452-0.260802126153-0.261249648254-0.261675941755-0.262079516656-0.262458872357-0.262812498558-0.263138876659-0.263436479860-0.263703774661-0.263939221762-0.264141276363-0.2643083964-0.264439010665-0.264531584166-0.264584554867-0.26459636686768-0.264565464769-0.264490294370-0.264369304371-0.264200946372-0.263983676573-0.263715956374-0.263396253575-0.263023042776-0.262594807277-0.262110038978-0.261567240179-0.260964924180-0.260301616181-0.259575854282-0.258786190583-0.25793119284-0.257009441485-0.25601953886-0.25496009987-0.253829760188-0.252627176689-0.251351024290-0.25