高墩大跨连续刚构桥稳定性研究(3)
发布时间:2021-06-06
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;
Ⅱ
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