公伯峽堆石壩面板溫度應(yīng)力及干縮應(yīng)力問題研究.pdf

1、天津大學(xué)碩士學(xué)位論文公伯峽堆石壩面板溫度應(yīng)力及干縮應(yīng)力問題研究姓名：于淼申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：水利水電工程指導(dǎo)教師：馮平20031201ABSTRACTThedammingtechnologyofconcretefacerockfilldamsisasignificantteclmolog)，achievementinthefieldofmodemdamen百neeringconstructionThenewtypeofdanahas

2、beenchoiceformanyengineeringspresentlyButitiswidelyknownthatthecrackcontr01ofconcretefaceplateiSoneofthekeytechnicalproblemsfort11eincreasingdevelopingofconcretefacerockfilldams。Largequantitiesengineeringexperiencesfromp

3、racticeshowthattheerackoffaceplate，especiallythroughcrackmainlythankstotemperaturestressesandshrinkagestressesHowevertheresearchfortemperaturestressesandshrinkagestressesofface—platehaven’tbeenattachedmuchimportanceto，or

4、deepnessofstudyhassilllbeen1imitedBasedon血econstructionpracticeofconcreteface—plateinGongboxiatakingthestandardsection(face—plateF9)andtypicalsection(face—plateF36)ontheleftbankofmonolithassamples，adoptingnonlinearFEM，co

5、nsideringtheoutsidetemperatureconditionduringthefaceplateconstructionandrunningalsoseveralfactorsthatelasticmodulusandcreeDstrengthoffaceplateconcretevarieswithtimeinconstructiontimeaimingatsuchsituationsasa11kindsofprob

6、ableinsulatingandconservingmeasuresforface—plateandadversecoldwaveandairtemperaturepeltingwhichpossiblyOCCurduringconstruction，simulatingthepracticalconstructionandrunningprocessesofface—plate，thepapermakessimulationanal

7、ysisofface—platetemperaturefieldandstressesfieldthroughout廿leconstructionandnmningcourses；takingtheenvironmentalhnmidityinconstructiontimeintoaccounttargetingattypesofpossiblehumiditypreservationandconservationmeasuresof

8、faceplatesimulatingtheactualconstructioncourseofface—plate，thehnmidityfieldandshrinkagestressesoffaceplateisanalyzedOnthewholetimebythemeansofsimulationBysimulationanalysisabovementioned、variationlaWSanddistributionchara

9、cteroffaceplatetemperaturefield，humidityfieldtemperaturestressesandshrinkagestressesintheGongboxiafacerock矗11damareobtainedOnthebasisoftheknowledge，correspondingtemperaturecontrolandhnmiditycontrolmeasuresaregivenTherese

10、archconelusionprovidesdirecttechnologysupportsfortemperaturecontr01andhumiditycontrolanticrackingface—plate，withnotonlyhighlyappliedvalues，butalsoimportantreferencevaluesforsolvingsimilarengineeringproblemsKeywords：face—