简介：Becauseofitsexcellentseismicperformance,reinforcedsoilretainingwallsareincreasinglyusedincivilengineering.Althoughmanycountrieshavepublishedcorrespondingdesigncodes,thedifferencesbetweenthemarestillrelativelylarge.UsingtheFHWACodeandtheCodeforSeismicDesignofRailwayEngineering(CSDRE),stabilitycalculationsofreinforcedsoilretainingwallswerecarriedoutandthesimilaritiesanddifferencesbetweenthesetwodesigncodeswereanalyzed.Accordingtothecomparativeanalysis,thefollowingconclusionsaredrawn:theinertiaforce,theearthpressureandthetensileforceofreinforcementscalculatedfromtheCSDREarelessthanthosefromtheFHWACode,andthesafetyfactorcalculatedfromtheformerislarger.AlthoughtheM-Omethodisrecommendedtocalculatethedynamicearthpressure,theFHWACodesuggestsahigheractionpointascomparedtotheCSDRE.

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简介：Dynamicearthpressureinducedbymachinefoundationsonaneighboringretainingwallisanalyzedwithemphasisonfactorswhichcontroltheintensityandlocationofthedesignforces.ThemeshlesslocalPetrov-Galerkin(MLPG)methodisusedtoanalyzetheproblemforavarietyofretainingwallandmachinefoundationgeometries.Thesoilmediumisassumedtobehomogeneousandvisco-elastic.Themachinefoundationisidealizedasaharmonicsinusoidaldynamicforceoftenencounteredinpractice.Anumberofanalyseshavebeenmadetorevealtheeffectoftheloadingfrequency,thelocationandsizeofthefoundationandthesoilshearwavevelocityonthedistributionandmagnitudeofthedynamicearthpressure.Resultsindicatethatthereisacriticalfrequencyandacriticallocationforwhichthepassivepressuretakesthemaximaintheentiredurationofthedynamicload.

简介：AIM:Toevaluatetheeffectofreleasingtheorbicularisretainingligament(ORL)complexoftheteartroughcombinedwiththetransconjunctivalblepharoplastyinthesurgicalmanagementofteartroughdeformitycomparedwiththeeffectofblepharoplastyalone.METHODS:Aprospective,randomized(byclosedenvelopetechnique),controlledsurgicaltrialwhichincluded50patients(100eyes)withbilateralvisibleteartroughdeformityandlowereyelidfatbulging,wasdividedintotwogroupswhere25patients(50eyes)hadteartrough-ORLreleasewithblepharoplastyand25patients(50eyes)didn’t.Qualitativeandquantitativeassessmentsofteartroughdeformityweredoneat6mopostoperatively,achievinggrade0or1ofBarton’sclassificationwasconsideredasuccess.Standardizedphotographicdocumentationofeachpatientwasdonepreandpostoperatively,alsoassessmentofthepatients’satisfactionpostoperativelywasdoneandrankedasexcellent,verygood,goodorfair.RESULTS:Therewasstatisticallysignificantdifferencebetweenthetwogroupsintheoverallaestheticresultspostoperativelyregardingthequalitativeandquantitativeanalysisoftheteartroughdeformity,wherepatientswhohadteartrough-ORLcomplexreleasehadmoresuccessfuloutcomesthanthoseofthesecondgroup.CONCLUSION:ORLreleaseshouldbedoneinpatientswithteartroughdeformityinordertoreleasethetetheringeffectofthisligamentwhichcausestheprominenceofthenasojugalgroove.