分舱板结构对筒型基础的抗震性能影响分析-豆柴文库

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分舱板结构对筒型基础的抗震性能影响分析
Introduction
Caissonfoundations,orcylindricalfoundations,arewidelyusedincivilengineeringstructuresinareaswithsoftorweakgeologicalconditions,suchasseasideareasandlowlands.However,theseismicperformanceofthistypeoffoundationisaconcern,especiallyinregionswithfrequentearthquakes.Toimprovetheseismicperformanceofcylindricalfoundations,variousmethodshavebeenexplored,includingtheuseofpartitionwallstostrengthenthefoundation.
Partitionwalls,alsocalleddiaphragmwallsorbaffles,arestructuralelementsthatdividethecylindricalfoundationintoseveralcompartments.Partitionwallscanenhancethefoundation'sstrengthandimproveitsseismicperformancebyreducingtheamplitudeandfrequencyoffoundationsoilmovementduringanearthquake.Therefore,thispaperaimstoanalyzetheimpactofpartitionwallsontheseismicperformanceofcylindricalfoundations.
StructuralCharacteristicsofCylindricalFoundations
Cylindricalfoundationsarecommonlyusedinoffshorestructuresandbridgesduetotheirhighbearingcapacity,stability,andeaseofconstruction.Thisfoundationtypehasacylindricalshapeandarelativelylargediametercomparedtoitsheight.Theshaftofthefoundationisusuallydrilledintothegroundtoadepththatensuressufficientbearingcapacity.Thetopofthecylindricalfoundationisflat,andthediameterofthetopsurfaceistypicallylargerthanthatoftheshaft.Thetransitionbetweentheshaftandthetopistypicallyaconicalsection.
Oneofthedisadvantagesofcylindricalfoundationsisthattheyhavealowresistancetoseismicforcesduetotheirrelativelylargediameter.Duringanearthquake,thefoundationmayexperiencelateraldeformationsandoverturningmomentsduetothesoil'smovements,whichcancausedamageandevencollapseofthestructure.Therefore,improvingthefoundation'sseismicperformancehasbecomearesearchfocusinrecentyears.
StructuralCharacteristicsofPartitionWalls
Partitionwallsaredesignedtodividethecylindricalfoundationintoseveralcompartmentstoenhancestability,increaseloadcapacity,andimproveseismicperformance.Partitionwallscanbemadeofreinforcedconcrete,steel,orcompositematerials.Theyarecom