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Experimentalstudyoncriticalconditionsforicejam developmentaroundside - by - sidepiers
WANGTong,WANGJun,HUHaotian,SANGLiansheng
(CollegeofCivilEngineering,HefeiUniversityofTechnology,Hefei 233000,China)
Abstract:Thebridgepiersintheriverchangetheoriginalflowcharacteristicsnearby,whichmayaffecttheforma
tionandevolutionoficejamnearthepiersinwinter.Basedontheflumemodeltest,thecriticalconditionsofice
jam developmentthroughdoublepierswereanalyzedbychangingthepiercenterdistance ,pierdiameter,pier
type ,icewaterflowratioandflowFroudenumber.ThetestshowsthatthereisacriticalFroudenumberinthesec
tionwheretheicejamcandevelopthroughthepier,anditsvalueiscontrolledbythefactorssuchaspiercenter
distance ,pierdiameter,piertypeandicewaterflowratio.Withthedecreaseofpiercenterdistanceorthein
creaseoficewaterflowratioandpierdiameter ,itbecomesmoredifficultfortheicejamtodevelopthroughthepier
section ,andthedifficultyofsquarepierishigherthanthatofcylindricalpier.Withinthetestrange,withthede
creaseofpiercenterdistance ,theicetransportcapacityoftheriversectionatthepierisenhanced,andtheinitial
icejamthicknessincreases ,buttheicejamequilibriumthicknessdecreases.
Keywords:doublepiers;criticalFroudenumber;icejamaccumulation;ice - waterflowratio
(责任编辑:李福田)
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