大跨徑拱式拱上結(jié)構(gòu)石拱橋極限承載力分析.pdf

1、分類(lèi)號(hào)：U44U45諼學(xué)夫津碩士學(xué)位論文大跨徑拱式拱上結(jié)構(gòu)石拱橋極限承載力分析白龍導(dǎo)師姓名職稱(chēng)胡大琳教授申請(qǐng)學(xué)位級(jí)別工學(xué)碩士學(xué)科專(zhuān)業(yè)名稱(chēng)橋梁與隧遞工程論文提交日期2009年4月28日論文答辯日期2009年5月27日學(xué)位授予單位長(zhǎng)安大學(xué)答辯委員會(huì)主席王建華教授學(xué)位論文評(píng)閱人周衛(wèi)教授級(jí)高工王建華教授AbstractTheconstructiontechnologyofancientandcontemporarystonearchbridge

2、sofChinaisfamousintheworld，therearealotofstonearchbridgehavebeenconstructedinourcountryeighteenofthemarelongerthan100m，SoitisimportanttostudythecapacityofthelongspanstonearchbridgesByanalyzingthestabilitytheoryandcalcula

3、tingDanHebridge，apracticaltonearchbridge，wecouldfindthefailurefeaturesoflong—spanstonearchbridgewitharchedspandrelstructure，whichisthescientificbasisfordesignandconstructionThispaperwillpresentdescriptionandanalysisfromt

4、hefollowingsixaspects：1First，thispaperintroducesthedevelopmentofstonearchbridgesinChinaanditsmechanicalperformanceandfailuremechanism，givesabriefsummaryondevelopmentofanalysistheorydesignmethodsandcalculationmethodsofult

5、imate—loadcapacityofstonearchbridges2Basedonthestabilitytheoryofbridgestructureandtheultimatebearingcapacityanalysisduringthewholeprocessofthestructure，thispaperpointsoutthat，researchingthegeometricalandmaterialnonlinear

6、ityofstructureisnecessaryforstructuralbehaviorofbridgestructure3Paperintroducestheanalysistheoryofgeometricalnonlinearityofstructure，andpresentsthedeductionprocess，analyticalmethod，differencesandfieldofapplicationoftheUL

7、FormulationandTLFormulation4PaperintroducestheanalysistheoryofmaterialnonlinearityofstructureAndthechapterelaboratesthematerialyieldcriterion，pointsoutincrementtheoryelasticplasticmatrixandplasticmatrixandthefiniteelemen

8、tmethodofelasticplasticproblem5PaperintroducestheresolutionmethodofnonlinearequationandconvergenceruleandtheanalysistheoryoftheprogramofANSYSPaperpointsoutthatthecommonresolutionmethodofnonlinearequationincludes：directso

9、lution，incrementalmethod，NewRaphsonmethodandmixedmethodAnd，paperintroducesthetheoreticfoundationandimplementationmethodofnonlinearityofbridgestructureinANSYS6Final，accordingtothepracticeproject，theultimatebearingcapacity