翻译文档格式.docx

翻译文档格式.docx

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1preface

South-NorthWaterDiversioncentrelinewearHuangaqueductengineeringdesignadoptonepairoftroughstopasswater,thetopstructureoftheaqueductselectstheUaqueductforuse,itis4mtocrosswatersectioninteriorradiusofunderpartsemicircle,thetopofthesemicircletroughisthestraightwallandwingreasonboard,design5.13mofdepthofwater,theclearwidth8moftheaqueductinthetrough.Theminimumthickmiddlepartofwallofsectionis0.35m,thetipis0.5m,is0.85mthatthepositionpartofthebaseplateisthickennedinstepping,thick1.35moftip.Thetroughcarriessection0.5m*0.5mofthecrossbeam,interval5m.Tall7.45moftrough,singletotalwide9moftrough,horizontaltotalwide19mofpairoftroughs,troughminimumandnetfrom1m.ThetopgradeofintensityofstructureconcreteisC50.

Moundcaplevelmeasurementis19.0m*5.0m,thickness2.8m.Moundcaphavehorizontalantidetonationblocklumpandcushionstone,horizontaltoblockpieceassigninbothsides,moundofcap.CombiningtheUaqueducttipstructurepattern,blockoneandadopttheladder-shapedsection,theheightis1.10m;

Itisthecylindricaltroughmoundof2.8mthatthebodyofmoundofbothsidesoftheaqueductadopts2piecesofdiameter,adopttheroundmoundofshapeentityofendinthemiddle,theradius1.4mofverybeginningofmound,high5.14m-9.93m,thedistanceis7.35minthemoundofthepost.ItisC40andC30respectivelytooverlaytheroofbeamandgradeofintensityofbodyconcreteofmound;

Pourintothefoundationsincludingtopsesandbeartheplatformandeachofunderpart.Itistherectangletobearalevel,thetotallengthis21.2m,thewidthis10.0m,thickness3.5m.Foundationadoptarmoredconcreteisitpourintotohole,eachbearplatformalongtroughtoassigntworowholeandpourintoone,arranging4eachtime,afoot-pathis2.2m.Outsidewithbearingobeytroughofdistanceofsetsofedgeto,to0.8mtroughnothorizontal.Itis6.2mtothecentre-to-centrespacingthatonearrangesthetrough,thehorizontaltroughis5.8mtothecentre-to-centrespacing,itsgrowsbetween68m-80m.ItisC30tobeartheplatformandgradeofintensityofabaseconcrete.

PiercethroughHuangaqueducttroughbodytypicalsectionplacesidewallconcretethickness35cmonly,duringusingnormally,underthesunshineandwarmsituationthatlowersuddenly,thewallisinfluencedbytemperatureinthetrough,theinternalandexternalsurfaceofconcretemustformverygreattemperaturegradient.Therefore,underthesunshineandwarmsituationthatlowersuddenly,itisveryeasytocauseanddrawthestressmoregreatlyontheconcretesurface.ThistextweartoSouth-NorthWaterDiversioncentrelineaqueductHuangstructurereceivestrengthcomplicatedcharacteristicundertemperaturefunction,adoptANSYSprocedurewearaqueductHuanggoonthree-dimensionalfiniteelementisitcalculatetoanalysetoSouth-NorthWaterDiversioncentreline,operateone,overhauloneinordertoverifytheaqueduct

Securityproblem.

2waterconservancyprojectaqueducttemperaturestressanalyticalmethods

2.1PiercethroughthenaturalconditionsoftheHuang'

s

Itisthewaitingareaoftheatmosphereofcontinentalhalf-drieddryseasontodressdistrictHuang,meteorologicalstatisticsstandinstandingaccordingtostandardMengCountyofweatherstationofHenanProvinceandMengjin,thelocalitymakesacleardistinctionbetweenthefourseasons,thedifferenceintemperatureisrelativelyhighinJune-Augusteverymonth,25degreesCentigrade-27degreesCentigradeonaverage,itisrelativelylowinDecember-February,is0.1degreesCentigrade-2.0degreesCentigrade.Whetherminimumtemperatureconsultnearmaterialsoftwocountytown（accordingtowearHuangdistrictMengCountyandMengjincountyof43km）writtendowntohave.¢

Ù

1961-200040averagetemperatureofthewholeyearofMengjin:

Dayminimumtemperatureextremevalue-11.9onaverageformanyyears（appearJanuary31,1969suchastime）;

Theminimumaverageoftemperature-6.42degreesCentigradeonaverageondayformanyyears（1961-2000）;

Theminimumtemperatureextremevalue-6.1degreesCentigradeonaverageintendaysformanyyears（appearinmid-Februaryof1964oftime）;

Theminimumaverageoftemperature-2.5degreesCentigradeonaverageintendaysformanyyears（1961-2000）.¢

Ú

1971-200030averagetemperatureofthewholeyearofMengCounty:

Dayminimumtemperatureextremevalue-10.6onaverageformanyyears（appearDecember27,1971suchastime）;

Theminimumaverageoftemperature-5.5degreesCentigradeonaverageondayformanyyears（1971-2000）;

Theminimumtemperatureextremevalue-4.9degreesCentigradeonaverageintendaysformanyyears（appearinthelasttendaysofDecemberof1971oftime）;

Theminimumaverageoftemperature-1.7degreesCentigradeonaverageintendaysformanyyears（1971-2000）.

Averagerainfall604.3mmformanyyears,amongthemtherainfalliscentralizedwithJulyparticularly.Thelargestwindspeed22.0m/s,winddirectionNW.

2.2Theborderconditionoftemperatureandcomputingtechnology

2.2.1Borderconditionoftemperature

Theborderconditionissolidsurfaceandinteractivelawofmediumaround,canbedividedintothefollowingtwokinds:

¢

Å

Thefirsttypebordercondition:

SolidsurfacetemperatureTisthetimeknownfunctionoft,namely（onborderB）

¡

é

Æ

Thesecondtypebordercondition:

Whensolidsurfaceandfluid（suchasair,water）keepintouch,passthesolidandsuperficialdensityofthermalcurrent,indirectproportiontodifferenceoffluidtemperatureTcwithsolidsurfacetemperatureT,

2.2.2namely（onborderC）weartemperatureborderprincipleoffetchingetc.ofaqueductHuang

（1）Waterborder

Whentheconcretekeepsintouchwithwater,coefficient¦

Â

becomesmoreandmoreinfinitelygreattosendoutheat,canhaveT-Tcbythesecondtypebordercondition=0,namelyT=Tc,turnsintothefirsttypebordercondition.

（2）Airborder

Whentheconcretekeepsintouchwiththeair,itsborderconditionshouldbedealtwithaccordingtothesecondtypebordercondition.Asksolvinginconditionthathowever,accordingtothesecondtypeborder,thecoefficientthatmustchoosetheaccuratesurfaceandsendoutheat,couldreceivemoresatisfactoryresultofcalculation.Becausedeterminethesurfaceofthestructurebordertosendoutheatcoefficientisverycomplicated,so,therealtestthatstilllacksinthisrespectsofarteststhedata.Inviewofabove-mentionedsituations,thecomplexityofcoefficientthatconsiderthesurfaceandsendoutheat,canusesurveyingthetemperaturedataoftheborderastheborderconditiondirectly,namelythefirsttypebordercondition.Thiskindofmethodismoreaccurate.Butonlytherearetemperaturematerialsoftheconcreteslabinbridgesandcivilengineeringatpresent,namelywhatinside,surfaceandairexposedtosurveymaterials,seeforwateryet,fortosurveymaterialsair.

2.2.3Calculatethetheoryandformula

Largeandmedium-sizedaqueductcomplicatedtothestructure,thesimulationofitstemperaturefieldandcalculationofthetemperaturestressshouldadoptthelawoffiniteelement,couldreceivethecomparativelyaccurateresult.¦

Á

inordertoleadwarmcoefficient,¦

È

inordertoriseadiabaticallyandwarmlyamongthem.

PiercethroughtemperaturefieldofaqueductHuangfortemperaturefieldofstabilizing,totheunstableheat-conductionquestion,temperaturefieldTisbesidesmeetingtheheat-conductionequation,mustalsomeetinitialconditiontypeT=¦

×

（x,y,z）andbordercondition.Distributedaccountingtemperaturestressaccordingtothedifferenceintemperatureaftercalculatingtemperaturefield,accordingtosuffusedwiththetermsofrealizingtheextremevalueoflettering,

2.2.4Calculateloadingandoperatingmode

Theonesthatconsiderwhilecalculatingload:

:

Waterloads,windloading,troughbodyconductingoneselfwithdignity,loading,temperatureloading,liveloadthetroughofprestressingforce.

（1）Waterloads:

Thewaterleveliscalculatedaccordingto5.01minthetrough;

（2）Thewindloads:

Accordingtothewind-forcesituationofZhengzhouandterrainconditionoftherivertrough,confirmwindpressurestrengthas0.86kN/m2;

（3）Thetroughbodyconductsoneselfwithdignity:

Theaqueductunitweightofarmoredconcreteis¦

Ã

=25.0KN/m3,conductsoneselfwithdignityandcalculatesautomaticallybytheprocedure;

（4）Prestressingforceloads:

Theprestressingforceconductloadsandisparticipatedincalculating,isthesimplifiedcalculation,regardcablewireandconcreteasseparatebreakingawayfromthebody,replacethe