大跨度PPC連續(xù)剛構(gòu)橋的靜力試驗(yàn)分析.pdf

1、西南交通大學(xué)碩士學(xué)位論文大跨度PPC連續(xù)剛構(gòu)橋的靜力試驗(yàn)分析姓名：賀立新申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁、隧道及結(jié)構(gòu)工程指導(dǎo)教師：何廣漢楊永清2001.11.1西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)AbstractThispaperlSbasedonthetestsandstudiesofHutiaomenBridgeontheGuangzhouZhuhaiRailway，whichisadoubletrackcontinuousrigid

2、—flamePPCbridgewithspansof110200110mIfthisbridgeisconstucted，itsmainspanwillsurpassthechinesepresentrecordofthesamekindrailwaybridge，andranksecondintheworldTherefore，aseriesofkeyproblemssuchasrationalstructure，responseto

3、loadandcalculatingmethodmustberesearchedThewholeprojectisdividedinto3modeltests：themodeltestforlocalstressunderanchorage，thetestofcantileverTshapedrigidframemodel，andthewholebridgemodeltestBasedonthelatterthemajorcontent

4、saremadeinthispaperasfollows1Thewholebridgetests，includingmodeldesignandfabrication，procedureofloadingtestfacilitiesanddatacollectingsystem，aredescribedanddiscussedInaccordancewiththewholebridgemodeltestunder5loadingcomb

5、inationsofvertiealandlongitudinalhorizontalloads，theCHIVESofnormalstress，deflections，andprinciplestressVS10adingprocess，andthecrackingfigureofmodelbeamunderultimate10adorsoareobtainedMeanwhile，theyarecomparedwithlinearan

6、alysisresultsAsaconsequencethecalculatingmothodisconfirmedandsomesuggestionsfordesignandconstructionareprovided2ByusingtheShellandLinkelementsofalargespaceFEprogram，thespacialstressesofthewholemodel(scale1：167、ofHutiaome

7、nBridgehasbeenanalyzed，whichresultinthebendingcalculatingresultsduringtheloadingprocedure，andthecomparisonwiththetestandplaneanalysisresultsMoreoverboththeregularityofstressdistributioninSegmentNoO(jointofbeamandpier)and

8、theshearlageffectsinthinwalledmodelbeamareanalyzedThenormalsectionultimatestrengthstakingintoaccountthematerialpropertiesarecalculatedbylayerby1ayertrialanderrormethodTheyarecomparedwiththeresultsfromtestandspecification

9、sAccordingtothesimilaritybetweenpracticalbridgeandmodel，theinternalforces，stressdistributionandchangeindeflectionofpracticalrigidframebridgeCallbesimulatedinordertoprovidesomereferencesforbridgedesignandconstruction3Onth