大跨度混凝土斜拉桥运营阶段混凝土收缩徐变影响研究

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1、学校代号；10536Y975736长沙理工大学硕士学位论文大跨度混凝土斜拉桥运营阶段混凝土收缩徐变影响研究学位申请人姓名缝羼宝培养单位捶鎏是缝翅王捏堂隧一导筛姓名及职称蓬罄嚣熬筮鬓奁王夔壅蓬墼墨奎堂塞副麴援学科专业援鋈复隧道』程研究方向登鋈鳖擒爱煎笾蕉薹整簦．。．论文提交器熬2QQ§至§星一论文答辩且期2QQ§里』旦答辩委员会主席垂鲣垩熬援O1加∽∞譬级学密ABSTRACTLong—spanconcretecable—stayedbridgesaresensitivetoshrinkageandcreep．Largeerrorwithres

2、pecttothepredicationofshrinkageandcreepwouldleadtosomedifficultyofrealizingtheactualoperationofthebridgesandleadtodeteriorationofserviceabilityproblems，aestheticsandeventuallyearlyreconstructionofthebridges．Thisthesismainlyanalyzedtheinfluenceofthreelong--spanconcretecable

3、--stayedbridgesduringtheoperationsthatarisefromtheeffectofshrinkageandcreep，triedtogettheshrinkageandcreeprulesofthedifferenttypesoflong—spanconcretecable-stayedbridgesduringtheoperations．Themajorcontentofthisthesisareasfollows：(1)．Thisthesisassortedthefamiliarshrinkageand

4、creeppredicationmodelsabroadandhome，detailedlycomparedthemodelofthenewversionChinaStandardofHighwayPCBridge(JTGD62—2004)withthemodeloftheoldversionChinaStandardofHighwayPCBridge(JTJ023—85)．(2)．Usingtheanalysismethodofshrinkageandcreepbasedoninitialstrain，Thisthesisfittedth

5、eshrinkstrainandthecreepcoefficientfunc．tionwithuniformexponentialfunctionmodelandfindawaytogettherecursionformulaeofshrinkageandcreep．(3)．Thisthesiscomparedtheacademiccalculationofshrinkageandcreepbasedondesigncodewithlongtimehealthmonitoringdata，verifiedtheshrinkageandcr

6、eepmodelsindesigncodeareadoptedinanalysisofactuallong—spanconcretecable—stayedbridges．(4)．Basedonthemodelsofshrinkageandcreepindesigncodeandthelimitedelementmethod，Thisthesisanalyzedtheinfluenceofthedifferenttypesoflong-spanconcretecable-stayedbridgesduringtheoperationswhi

7、charisefromtheeffectofshrinkageandcreep，concludedaseriesofsameanddifferentrules．(5)．Thisthesisderivedthesimpleformulaforthedeflectionofmaingirderwhicharisefromtheeffectofshrinkageandcreep，preferablyexplainedthedeformationandinternalforceregularitywhicharisefromtheeffectofs

8、hrinkageandcreepKeywords：long-spanconcretecable·stayedbridges；shrinkageandcreep；designcod