幸福源水库双线特大桥空心高墩温度场试验-研究

《幸福源水库双线特大桥空心高墩温度场试验-研究》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、英文摘要ABSTRACTWiththerapiddevelopmentofbridgeconstruction，thebridgespanbecomeslongerandthepierbecomestallerandthinnerthanbefore．Becausetheenvironmentaltemperaturechangesallthetime，thesehugebridgepierswouldproducethermalstressesandcausesseriouseconomiclosses．Byworkinghardforhalfacentury,peoplehav

2、eknownwellontemperaturefieldandwrotetheresultstostandard．Itstatesveryclearlyaboutthetemperaturefieldandthermalstressofboxgirderinthestandard．Butthere‘Snoexactillustrationsabouttemperaturefieldofpier．So，inordertosatisfytheprojectneeds，wemustresearchthetemperaturefieldofpierimmediately．Thispaper

3、，supportedby”TechnologyResearchonHighPierSructrureDesignofMountainHigh—speedRailwayBridges”，withengineeringbackgroundofXingFu—yuanreservoirmajordoubletrackbridge，combinedwithmodeltest，studiesthetemperaturefieldofhollowpierandtheinfluenceofreinforcementratiotothetemperaturelfield．Inthisexperime

4、nt，itbuildsonescalemodelwhosesizetotheprototypeofbridgepierratiois1to10andthreesectionmodelswhosesizetotheprototypeofapartofpierratioiS1to1．And．thesectionmodelshavesixdifferentratios．Toresearchonthetotaltemperature：fieldinthepier,itteststhetemperatureofscalemodelwhenitisheatedinthesunshineorhe

5、atedinsideofitselfassimulationofthecoldwave．Inordertostudyonthelawsabouttemperaturechangingalongthewallandtheinfluenceofreinforcementratiotothetemperaturefield，itteststhetemperatureofsectionmodelsunderthesolarradiation．Meanwhile，itusesfiniteelementsoftwaretochecktheresultsoftest．Bytestingthete

6、mperatureofscalemodelandsectionmodelsandusingleast—squaresmethodtoanalyzethetestresults，thepapergetsthefollowingconclusions；：①Becauseofthesolarradiation，thetemperaturedifferencebetweeneasterninnerandouterwallreachesthemaximumat11：00andthetemperaturedifferencebetweenwesterninnerandouterwallreac

7、hesthemaximumat6：00pm．Bycontrast，thetemperaturedifferencebetweenwesterninnerandouterwallisbiggerthaneastern，whichismoreunfavourable．Whenheatinginsidethemodel，itturnsoutthatthetemperaturedifferencebetweeninnerandouterofsouthwallisbiggert