武廣客運(yùn)專線大跨度下承式鋼箱系桿拱橋試驗(yàn)研究.pdf

1、中南大學(xué)碩士學(xué)位論文武廣客運(yùn)專線大跨度下承式鋼箱系桿拱橋試驗(yàn)研究姓名：屈志鋒申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：葉梅新20080401ABSTRACTThetiedarchthroughbridgeisoneoftheidealstructuretypebecauseofitsgoodspancapacity，lowheightofarchitecture，convenientconstruction，beautyandecono

2、my，whenthehighspeedrailwayskewoverpassthemainroadsofthecityandexpresswayAsteeltiedarchthroughbridgewith140metersspanskewoverpassingtheBeijingZhuhaiExpresswayusesthesemi—compositefloorsystemInthispaper，theorigin，developme

3、ntandapplicationofthetiedarchbridgeontherailwaywereintroducedandthereduced—scalemodelexperimentofthisbridgewascompletedThemainworkareasfollows：1Areduced—scalemodelofl：8wasmadeaccordingtothesimilaritytheorymoreovertheacce

4、ssorialloadingdevicewasdesignedandtheprojectofloadingwascollrobomted2Fourexperimentsofthesteelstructurewerecompletedwhichwasusedtosimulatetheconditionthattheconcreteslabwasfailure。Byanalysingtheresultsofexperimentandther

5、esultsoffiniteelementanalysis，thedeformationandloadingcarryingbehaviorofthestructurewerestudied，andthemechanicalbehaviorofthestructurewasevaluated3FiveexperimentsofthesteelconcretecompositestructurewerecompletedByanalysi

6、ngtheresultsofexperimentandtheresultsoffiniteelementanalysis，thedeformationandloading—carryingbehaviorofthestructurewerestudied，andthemechanicalbehaviorofthestructurewasevaluatedThebearingcapacityofthestructurewasstudied

7、basedonoverloadexperimentofthefive4TheinfluenceofthecompoistconcretedeckonmechanicalbehaviorofthestructurewasstudiedbasedonthetwostagemodelexperimentsTheresultsshowthat：thecompoistedeckenhancesthewholestiffnessofthestruc

8、ture，andimprovesthemechanicalbehaviorofthefloorsystem5ThemechanicalbehaviorofthebridgewerestudiedbasedonmodelexperimentandtheoreticalanalysisoftheactualbridgeTheachievementofthispapercanservicedesignofthisbridgeandprovid