水電站地下廠房?jī)?nèi)源振動(dòng)計(jì)算模型和邊界條件的研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文水電站地下廠房?jī)?nèi)源振動(dòng)計(jì)算模型和邊界條件的研究姓名：李慧君申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水利水電工程指導(dǎo)教師：馬震岳20090624水電站地下廠房?jī)?nèi)源振動(dòng)計(jì)算模型和邊界條件的研究StudyontheDynamicNumerical—ModelandboundaryofUndergroundHydropowerHouseundertheActionofInternalDynamicLoadingsAbstractWi也t

2、hedevelopmentofthehydroelectricalenterpriseinChinathescaleofthehydropowerstationisincreaAinganditsimportanceisalsobecomingmoreandmoresignificantInthemeantime，thesafetyissueofthehydropowerstationhasalsobeendrawnmoreattent

3、ionAsanimportantconstituentpartofthepowerstationthepowerhouse，especiallytheundergroundpowerhouseofthelarge—scaledstationthekeyproblemsofErgonomicsDesignisdynamicCharacteristicofthepowerhouseAtpresent，peopleoftencreatethe

4、modelofundergroundpowerhouseonlyandimposeelasticconstraintorartificialboundarydirectlyontheconcretewallsurfaceofundergroundpowerhousewhenusenumericalsimulationmethodstudythedynamiccharacteristicsoftheundergroundpowerhous

5、eLessconsidertheinfluenceofrockwhichconnectstheconcretewallofundergroundpowerhouseThus，itisreasonabletoguideengineeringpracticeusetheresultingconclusionsarealsoworthexploringForthisreason，basedonHohhotundergroundpowerhou

6、seWestudytheinfluenceonthedynamiccharacteristicsoftheundergroundpowerhouseofrockwhichconnectstheconcretewallofundergroundpowerhouseInadditionwealsostudythechoiceofthedynamicartificialboundaryInparticular，themainresearchc

7、ontentsdescribedasthefollows1、WhenweusetheFiniteElememMethod(FEM)toanalyzethestructuresoildynamicinteractioninordertosimulatetheinflueneeofthedampofinfinitefoundation，weshouldusetheartificialboundaryT11iSpaperanalysesand

8、contraststhestability，veracityandthedi伍cIlltyinapplyingtocalculativesoftwareofdifferentartificialboundaryunderintemaldynamicloadingnleresultsindicatethattheaccuracyoftheviscousspringboundaryslightlylowerthanthesecond—ord

9、ertransmittingboundary，butitcanbeappliedtocalculativesoftwareeasily2、BaseonthebackgroundofHohhotpumpedstorageplantsixdynamicsimulatedmodelsfortheundergroundhydropowerhouseweresetupwithvariousrangeofsurroundingrocksThen，t

10、heinfluenceofsurroundingrocksonthedynamicresponseofundergroundhydraulicpowerstationwasstudiedundertheactionoffivekindsoffrequencyintemaldynamicloadingsseparatelyNumericalresultsindicatethatitiSreasonabletoconsidertheinfl