分幅主梁斜拉橋雙聯(lián)塔結(jié)構(gòu)行為模型試驗研究.pdf

1、西南交通大學(xué)碩士學(xué)位論文分幅主梁斜拉橋雙聯(lián)塔結(jié)構(gòu)行為模型試驗研究姓名：王沖申請學(xué)位級別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：趙人達(dá)20100501西南交通大學(xué)碩士研究生學(xué)位論文第fI頁_lm_mmmmmmlmIIAbstractWiththeincreaseoftrafficvolume，bridgesaredesignedwithmoreandmorewidedecksanoveltwindeckbridgeemergesastheti

2、mesrequireWithspaciousvisualeffectandgooddrivingconditions，thetwin—deckbridgegraduallywinsmanypeopleSgoodgracesThenumberoftwin—deckbridgesbuiltathomeandabroadgraduallyincreasesdaybydayWhilemosttwin—deckbridgesareparallel

3、structures，whichareinindependentforcestateYongiiangsuperlargebridgebeingbuiltinNingboisatwin—deckcable—stayedone，buttwinpylonsofseparatetwin—decksaretransverselyjoinedintoamonolithiconeTheforcingstatesintwinbridgesaremut

4、uallytransferredthroughthejointpartofthepylonTwinbridgesareincouplingforcestateTheworkingstateandthesafereserveoftheunitedtwinpylonshaveattractedengineers’attentionOnthebasisofcollectingandstudyingcorrelaviteinformationa

5、thomeandaboard，takingYongjiangsuperlargebridgeasanexample，modelteststudyontheunitedtwinpylonsismadeThemainresearchworkisasfollows：1TakingmodelteststudyontheunitedtwinpylonsofYongjiangsuperlargebridgeastheresearchobject，s

6、pecificimplementationprocessesandproceduresofthemodeltestaredescribed，suchasstructuraldesignandproduction，materialstesting，loadingandtestingdesignandSOon2Theinternalforcesofcontrolsectionsofprototypeandmodeltowerstructur

7、earecalculatedandanalyzedindetailEquivalenceprincipleofcableforcesareintroducedInordertooptimallydeteminetheassigningpositionsofstayed—cables，thenumberofstayedcablesandcableforcesinthetest，optimizationtheoryisappliedBase

8、dontheoptimizationmodule(OPT)offiniteelementsoftwareANSYS，twoparameterizedmodelsareestablishedandtheaboveconstrainedoptimizationproblemissolvedandcomparedBasedonMatlabplatformandANSYSAPDLlanguage，thecorrespondingnumerica

9、lcalculationisprogrammedandbytransformingtheaboveconstrainedoptimizationproblemintounconstrainedoptimizationproblem，allthecalculationprocessesofoptimizationsolutionareachievedbyANSYScallingMatlabThus，atthesametimeofachie

10、vingthedesiredgoal，therateofutilizationofstayed—cablesisincreasedandtheresourcecostisreduced3Structuralbehaviorsofunitedtwin—pylonsarestudiedinthemodeltestDisplacements，stressesincontrolsectionsandcableforcesaremeasuredT

11、hemeasuredandthecalculatedresultsagreewellTherationalityandfeasibilityofsolutionofequivalencecableforcesbasingontheoptimizationmodule(OPT)ofANSYSornumericalprogrammofMatlabisverifiedbythetestresultsThemutualinfluenceamon

12、gstayedcables，especiallyamongthosebetweendifferentpylonsintheunitedtwinpylonsaremadeclearFinallytheultimatebearingcapacityistestedanditshowsahighcoefficientofsafetyfortheunitedtwinpylonsThemodeltestresultsshowthatthecabl