基于可靠度的連續(xù)剛構(gòu)橋雙薄壁墩優(yōu)化設(shè)計(jì).pdf

1、西南交通大學(xué)碩士學(xué)位論文基于可靠度的連續(xù)剛構(gòu)橋雙薄壁墩優(yōu)化設(shè)計(jì)姓名：張會杰申請學(xué)位級別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：祝兵20070501西南交大學(xué)碩士研究生學(xué)位論文第H頁AbstractAnidealstructureshouldbedesignedinsuchawaythatitsperformanceissatisfiedduringthedesignedworkinglifeandinaneconomicwayOptimiz

2、ationbasedonreliabilityshouldbeconsideredamorerationaldesignphilosophybecauseofitsrationalityItsintegrationofoptimizationandreliabilityanalysisContinuousrigidflameBridgemee坦thedemandsoflargespanandforcingrequirementItsco

3、mmmetionprovestobeeasierwithoutbearinganditmakesvehicleslullsmoothlybecauseofexpansionjoint’sabsenceSo，Continuousrigidframebridgeenjoysitspopulari彤Amongvariousk／ndsofhighpiers，doublethinwallpierc缸improveflexuralrigiditya

4、llowsmuchbiggerlongitudinaldi印lac鋤∞：【，andprovidesbetterlateraltorsionalmengthItappearsaesthetic，butthedesignisharderAlwaystheparameters[1iechosenbyexperiencesubjectivelyThisthesisfirstlyreviewscurrentapproachesofoptimiza

5、tionofdoublethinwallpicrthenstudiesdesignmethodofdoublethinwallpioranddiscussestheforcingstateofthemostdangerous，requirementsofitslongitudinalthrustresistanceandbendingresistingIi百di協(xié)thebucklingstabilitytheinfluenceofthe

6、tiebarsbetweenthedoublethinwallsAfterthat，thisthesisstudiesthereliabilityanalysisandtheoptimizationdesignbasedonreliabilitytheoryandstressesthespecificmethodswhichtheprogramANSYSusesFinallythedoublethinwallpier’Sgeometri

7、calparametersofacontinuousrigid盤alllebridgealeoptimizedbytheaboveapproachandthenthedoublethinwalipier’sreliabilityprobabilityisaualyzedLKeywords：rel／ability；optimization；continuousrigidfralnebridge；doublethinwallpim；tieb