高墩大跨连续刚构桥稳定性研究(3)

发布时间:2021-06-06

高墩大跨连续刚构桥稳定性研究

Abstract

Thecontinualrigidfhmebridgewithhi曲pier粕dlongspanwaswidespreadusedbec她se0fmefcamre:explicitaboutforce;ddVingunimpeded;thematllretechniqueofconstmctionetc.Especiallyforthel盯gebridgewithhighpier,“isf打oufed

thinwallbythebuilderof丘弓ewayinmountainousareabecauseofusingnexibilityoftopi凹t0adaptalll【indsofeffcct.砌spicrbd∞gscompfession-bendingcompomnt

factor’sintheorcticaldesign,actIlalIy,thepierexistinginitialdefect,addingothcrwhichmadeit’sstabilitymorecomplex.Basedthebackgroundsonaff的tstheYeSanheBridge,theanicleh觞觚alysisedthehighpierself_s诅bility,tllebiggestcantileverstate’ss协bility柚dtlle锄tire

。bridge’sstability.Themainfcse盯chcontenlandmeachievementinclude:

hthclimitofelasticity,ithasinfemedtllecritical10ad

cross—sec吐onhighpier’sself-s扭bilityandtllefb咖uaaboutVariableb噜gestcantileVerstate’ssta_bilityincontinualri西dffamebridgeofdoublethinwall柚dhighpicrbymeR妇method,觚ddrawcd叩acalculatepmcedllfewllichprOVidedonequickcompu诅tion“memOdfbrnliskind0fbfidgestable’squestion.

ThelargeFinitcElememSORwarcANSYSw髂uscdto柚alysisn圮stabililyabouttheYe

tlleSanlle晰dgebiggestbyestablisIlingmree-dimcnsi∞alfiniteelemem啪delforhas札alysed

displacementofhighpicr,mec髓tilev盯state柚dtllefinishedbridgestate.nconsideredinitialmeeffccttotllebridge’sstabilitywllich

tllepicr,initialoffsctOfttleload0ns印mtelythetopofpicr,tlleimpact0fwindload,dimrcnal把mpemturceff&toftllesunshine姐d辄spendedwa90ndroped,h勰obtainedthe邝lchowinfluencet0mestableofbridgcbyeachkindofnaw.

hmecaIcuIation,ith嬲discussed柚d卸alysisedttleeffcctof

stabilitywimthe晰dge’soVermou曲tingmeconcrete’sshrinkage姐dcreep锄d

YethetcmperatllrctllestmctIl托.hals0has缸alysisedmeS柚heBridge’sstabilitywimmeh缸mful

combination0floadsandcauculatedthes“IbilityoftheYeSanheBridgeinthchamfblcoInbinatiOn

SaIllleoflOads.Thercsultspmvidethetlleoryins仃IlctionfbrthepmblemofstabilityoftheYeBridge柚dtllercferencefortheresearcht0thiskindofbfidge’sst曲ility姐dmebridge’sstabilitywhichconsidered也einitiaIfIaw.

COntinuaIrigidf}amebridgewithHighpier

Finite;AnaIysisofcaIculationKeyword:VariabIecrosssection;andLongspan;吼ability;

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