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HEC-RAS摸式應用講習會-p1of8-HEC-RAS摸式應用講習會練習內容說明四個練習題彼此有連貫性，宜由練習一逐題操作。練習一—基本資料(1).河道平面為：(2).基本剖面：各斷面資料見Table1註：各斷面形狀一樣即station相同僅高程有變化(3).流量資料流量資料見練習一之Table240020080050040050454035302580859095100105-600-400-2000200400600HEC-RAS摸式應用講習會-p2of8-Table1-CrossSectionDataCross-Sect50Cross-Sect45Cross-Sect40Cross-Sect35Cross-Sect30Cross-Sect25#StationElev.#StationElev.#StationElev.#StationElev.#StationElev.#StationElev.1-5001001-50098.51-50097.51-50096.31-50095.51-50094.52-400982-40096.52-40095.52-40094.32-40093.52-40092.53-300973-30095.53-30094.53-30093.33-30092.53-30091.54-20096.54-200954-200944-20092.84-200924-200915-100955-10093.55-10092.55-10091.35-10090.55-10089.56-50906-5088.56-5087.56-5086.36-5085.56-5084.57-25867-2584.57-2583.57-2582.37-2581.57-2580.580858083.58082.58081.38080.58079.592086.5920859208492082.89208292081106091106089.5106088.5106087.3106086.5106085.511100951110093.51110092.51110091.31110090.51110089.512200971220095.51220094.51220093.31220092.51220091.513300971330095.51330094.51330093.31330092.51330091.514400991440097.51440096.51440095.31440094.51440093.5155001001550098.51550097.51550096.31550095.51550094.5DownstreamReachLengthsLeft400Left200Left800Left500Left400Left0Chan400Chan200Chan800Chan500Chan400Chan0Right400Right200Right800Right500Right400Right0Manning'snValuesLeft0.07Left0.07Left0.07Left0.07Left0.07Left0.07Chan0.04Chan0.04Chan0.04Chan0.04Chan0.04Chan0.04Right0.06Right0.06Right0.06Right0.06Right0.06Right0.06BankStationsLeftRightLeftRightLeftRightLeftRightLeftRightLeftRight-100100-100100-100100-100100-100100-100100Table2-FlowDataFlowDataStartingProfile#Q,cfsSlopeft/ft11,0000.002523,0000.002535,0000.002549,0000.0025HEC-RAS摸式應用講習會-p3of8-練習二—變更基本資料利用練習一資料檔(1).變更斷面30之剖面高程樁號-250，高程改為94，樁號250，高程改為94。註：斷面30並無樁號-250及樁號-250，如何處理？(2).變更斷面40之n值樁號-500to–300Ìn=0.08,樁號-300to–100Ìn=0.07,樁號-100to100Ìn=0.06,樁號100to300Ìn=0.07,樁號300to500Ìn=0.08,(3).在上游再增加兩個斷面，斷面55，60斷面55位於斷面50上游500ft，高程提高15ft，斷面60位於斷面55上游500ft，高程提高15ft。練習三—增加橋樑斷面利用練習二資料檔增加橋樑於斷面37.5，介於斷面40與斷面35之間，相關資料見Table3和Figure1、Figure2。HEC-RAS摸式應用講習會-p4of8-Table3-BridgeDataforBridge8.5Figure1-LocationofBridge37.5andNewCross-SectionsDistancebetweenU.S.crosssectionandbridgedeck=25feetWidthofbridgedeck=30feetWeircoefficient=2.8U.S.andD.S.sideslopes=2:1MaxSubmergence=0.95WeirCrestShape=BroadCrestedBridge37.5Bridge37.5UpstreamSectionDataDownstreamSectionDataStationHighChordLowChordStationHighChordLowChord1-20093.31-20093.32-10093.32-10093.33-10093.391.33-10093.391.3410093.391.3410093.391.3510093.3510093.3620093.3620093.3HEC-RAS摸式應用講習會-p5of8-配合增加橋樑於斷面37.5，在斷面40與斷面35之間應再增加四個斷面，其中斷面39、斷面38二個斷面位於橋樑上游、另斷面37與斷面36二個斷面位於橋樑下游，相關資料見Table4。Table4Addedcrosssectiondata斷面403938373635與下游斷面之間距(ft)26010080200160500與下游斷面之高差(ft)0.50.10.00.10.50.8擴展係數0.30.50.50.50.30.3束縮係數0.10.30.30.30.10.1Figure2–IneffectiveFlowforCrossSection38and37HEC-RAS摸式應用講習會-p6of8-練習四—增加涵管斷面利用練習三資料檔增加涵管於斷面32.5，介於斷面35與斷面30之間，相關資料見練習四之Table5、Table6和Figure3、Figure4。Table5–CulvertRoadwayData配合增加涵管於斷面32.5，在斷面35與斷面30之間應再增加四個斷面，其中斷面34、斷面33二個斷面位於涵管上游、另斷面32與斷面31二個斷面位於涵管下游，相關資料見Table7。Figure3-IneffectiveFlowLimits@CrossSections33and32DisttoUSXS=15feetU.S.andD.S.sideslopes=1:1Widthofroadway=24feetMaxSubmergence=0.95Weircoefficient=2.7WeirCrestShape=BroadCrestedCulvert32.5Culvert32.5UpstreamRoadwayDataDownstreamRoadwayData#StationHighChordLowChord#StationHighChordLowChord1-20092.51-20092.5220092.5220092.5HEC-RAS摸式應用講習會-p7of8-Table6–CulvertDataforCulvertsat32.5ItemCulvertGroup#1CulvertGroup#2CulvertGroup#3SolutionCriteriaHighestU.S.EGHighestU.S.EGHighestU.S.EGShapeBoxCircularCircularSpan10Rise863Chart#58-Rect.concrete1-Conc.PipeCulv.1-Conc.PipeCulv.Scale#2-Sidetapered3-Groove-projecting3-Groove-projectingDist.ToUSXS555Culv.Len.444444Entr.LossCoef.0.20.20.2ExitLossCoef.111'n'value0.0120.0120.012USInvertElev.8285.588DSInvertElev.81.685.187.6CenterlineStationsCenterlineStationsCenterlineStations#UpstreamDownstreamUpstreamDownstreamUpstreamDownstream1-14-14-46-46-62-622-3-3-39-39-58-58388-32-32-54-544-25-2550505191954546262658587333384040Figure4-CulvertLocationHEC-RAS摸式應用講習會-p8of8-Table7Addedcrosssectiondata斷面353433323130與下游斷面之間距(ft)281305426028400與下游斷面之高差(ft)0.00.40.00.40.01.0擴展係數0.30.50.50.50.30.3束縮係數0.10.30.30.30.10.1ExerciseNo.1HEC-RAS模式應用講習會Aug.01~02,2008Page1of4ExerciseNo.1–BasicDataInputInthisexercisestudentswillcreateanewHEC-RASproject,enterthebasicgeometricandflowdata,savethedata,runasteadyflowsimulation,andviewtheresults.1.CreateNewProjectA.InvokeHEC-RAS2.2bydoubleclickingontheHEC-RASiconfromyourWindowsOperatingSystem.B.Createanewprojectunderthe“File”menu.FillintheTitleboxwith“MontanaTrainingSession”andtheFileNameboxwith“MT-Train.prj”.ClickontheOKbuttonfromtheNewProjectwindowandthentheOKbuttonagainwhenpromptediftheinformationprovidediscorrect.ThiswillbringyoubacktothemainHEC-RASwindow.FillintheProjectDescriptionbox(lookfortheblinkingcursor),andthenclickontheETCbuttontoseehowmuchroomyouhavefortheprojectdescription.ClickontheETCbuttonagaintoreturntheProjectDescriptionboxtoitsoriginalsize.2.InputGeometricandFlowDataA.Sele