Vibration Control Systems - Behsaz Andishanbehsazandishan.com/catalog/02-GERB Application Areas.pdf · Benefits offered by GERB solutionsAt GERB, we are fully conscious that inno

Vibration Control SystemsApplication Areas

Benefits offered by GERB solutions

•Unrivalledvibration isolation

efficiency - up to 99%

•Reduced foundation size, which

resultsincost,timeandspace

savings

•Designedtoensuremaintenance

free, durable operation

•Reduced stress in machines,

whichleadstoan increased

operation life

•Easy levelling of the machine

wheneverrequired,evenafteryears

of operation

•No harm to the workshop or

building

•Seismic protection of machinery,

buildingsandothertallstructures

ThehistoryofGERBdatesbackto1908.

Thiswastheyearthatitsfounder,William

Gerb,becamefascinatedwiththeideaof

usingsteel springsinordertoprotect

workareasandsurroundingneighborhoods

frommachineryvibrations.Subsequently,

theinventionoftheViscodamper® com-

pletedthemostefficientvibrationcontrol

systems.

Sincethen,theGERBGroupofcompanies

hascontinuedtodevelopthisideaandit

hasseenussolvedynamicproblemsacross

manynewfieldsofapplication.

Today,bothmachineryandequipmentin

many power generationandmetal form-

ing plantsareinstalledonactive vibration

isolation systems.Theobjectivebehind

thisisnotonlytoreducevibrationsthat

aregeneratedbythemachines,butalsoto

reducethefoundationsizeandcost.

Sensitive production, measurement and

test equipment, and even entire buildings

require passive isolation systems inorder

toprotectagainstdisturbingvibrationsof

nearbymachines,trafficandseismicactivi-

ties.Bothactiveandpassiveisolationsys-

temspermitthestraightforwardrealignment

ofthefoundationincaseswherepoorsoil

conditionscausethefoundationtosettle.

Tuned Mass Dampers (TMDs) are a special

typeofvibrationprotectionfortallerstruc-

tures.Specifically,theyareusedtostabilize

andreducevibrationsofbridges,buildings,

stadiumsandothersystems.

At GERB, we are fully conscious that inno-

vationistheonlywaytosecurethefuture.

The vibration isolation of railway tracks

and the seismic protectionofsensitive

equipmentandbuildingsareamongjust

someofourexcitingnewerapplications.

GERB’sResearchandDevelopmentCenter,

whichislocatedinBerlin,Germany,regular-

lycollaborateswithhighlyregardedresearch

institutionsinGermanyandabroad.

GERB Activities:

Thedevelopment,manufactureandsupply

of custom designed solutions for vibra-

tion control.

Ifrequired:

–Measurement/identificationofvibration

andstructurebornenoiseissues

–Staticanddynamicstructuralanalysis

–Installationandadjustmentorsupervision

Applications of Vibration Control Systems

GERBiscertifiedaccordingto:

ISO9001,ISO14001,OHSAS18001,DINEN1090-01,

DINEN1090-02,ISO3834andotherstandards

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Metal Forming / Industrial Machinery

AnElasticallySupported SMSEUMUCOHASENCLEVERPress, Austria

TheSpringSupportedCATERPILLARGensets,

USA

VibrationIsolationofCentrifuges, Germany

FORGING HAMMERS

Forginghammersgenerateextreme dynamic forces whichhaveadetrimentaleffectonnearbyequipment, theoperatingpersonnelandevenonnearbyresidences. Inresponsetothisissue,GERB’sdirect spring support of forging hammers:

• Achieves a reduction in vibrations ofmorethan85%• Ensuresareductioninconstructiontimeandthe

cost ofthefoundation• Enables hammers to operate maintenance free forlongerperiodsoftime

• Eliminatesproblemsoffoundationsettlement andtilting of the hammer

GAS AND DIESEL GENSETS

Nowadays,thespringsupportofgasanddieselgensetsisastandardfoundationsolutioninmanycountries.

GERBelasticsupportsystemsprovideanefficiency of isolation that reaches up to 98%.Consequently,thishelpstoavoidthesettlement of the substruc-ture as well as damage to the machines in cases of earthquakes.Ourspringsupportsystemsareusedforalltypesofgensets,includingemergencygensets.

PRESSES

All types of presses - whether they are mechanical, hydraulicorscrewpresses-willcreate vibrations that will disturb the surrounding neighborhood.Theresultcanbedamagetothebuildingandothermachinesinstallednearby.

Throughouttheworld,GERBhassucceededin isolatingthelargestandmostcomplicatedpressesinaveryeffectivemanner.

CENTRIFUGES

Dynamic forcesofverticalandhorizontalcentrifugesinchemicalandotherindustriescaneffectively be reduced by suitable isolation systems that allow the installationofthemachinesonhigherbuildinglevels.

Our4pointisolationsystemhasreplacedthestandard

type3pointsupportingsystemsonagloballevel.

ASpringSupportedLascoForgingHammer,Germany

The Principle of DirectSpring

Support

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Power Plants / Damper Systems

PipeworkDampersforEarthquakeProtectionat a Power Plant, Hungary

SpringSupported Axial Fan,

TLT,Germany

SpringSupportedAxialFan,Howden,Germany

TURBINES AND CONDENSERS

Togetherwithleadingturbinemanufacturers,GERBhasdevelopedtheelasticsupportofturbineswithcapaci-tiesofupto1700MW.Ourcustomersarebenefittingfromthemanyadvantagesofferedbythisinnovation:

• Achieves vibration isolation ofmorethan98%• Straightforward adjustment and re-alignment• Creates additional space below the turbine• Integrates the turbine into the building structure• Protects the turbine against earthquake damage

Springsupportedcondensersenablethermalexpan-sionwithoutanyrestrictions.

FANS

ThankstotheGERBspringsupportoffans,heavy block foundations are no longer required.InsteadoftheneedforamassiveRC-block,thefanfounda-tion can either be eliminated or reduced to a small size slab.

The efficiency of vibration isolation of more than 95% willnotcauseanydisturbancetothesurroundingarea.Furthermore,thelowtotalweightofthespring supported fan protects from settlement of the sub-structure.

MILLS / CRUSHERS

Millsandcrushersofalltypes,especiallythoseinpowerplantsandthecementindustry,generateheavy random type dynamic forces that affect nearby boil-ers,controlinstrumentsandotherequipment. Springsupportnotonlyreducesmaintenancecostsasaresultoflesswearandtear,butalsoallowsforsmallerfoundationsthateliminatelayoutconstraint atthesite.

PIPEWORK DAMPERS

GERBpipeworkdampersareusedinpowerplants,chemicalplants,refineriesandoffshoreapplica- tionsacrosstheglobefortheprotectionofpipingsystems.GERBpipeworkdampersensure:

• Vibrations are reduced in all degrees of freedom• The development of high damping forces in

case of shock and operational loads• Vibrations are reduced withoutanydelay• GERB Pipework Dampers are maintenance free

TheSpringSupported LOESCHECoalMill,

Belgium

TheSpringSupported 900MWSiemensTurbine,

Germany

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Building Isolation / Trackbeds

ACommuterTrainona FloatingSlabTrackSystem, LosAngeles,USA

TRACKBED ISOLATION Alltrainsproducenoiseandvibrations,disturbingpeopleandsensitiveindustriesinmanycities.GERBoffersavariety of anti-vibration bearing systems, successfully reducing train induced vibrations and structure borne noise.

Nowadays,GERBFloatingSlabSystemsrepresenthighly effective and long term reliable vibration mitigation systemsthatarerecognizedbyexpertsallovertheworld.

BUILDINGS Attractivebuildingplotsfoundincentralandconvenientlocationsof moderncitiesoftencomewithonemajordisadvantage–vibrationsandstructurebornenoisecausedasaresultof:

– Metroandrailwaylines, – Heavytrucktraffic, – Machineryinneighboringindustrialfacilities Vibrations and ground-borne noise can be significantly reduced by elastic support systems for buildings. GERBspringelementsareinstalledbelowbuildings,inpocketsarrangedwithinbasementwalls,orontopofwallsandcolumnsabovegroundlevel.

Systemswithverticalnaturalfrequenciesaslowas 3to8Hertzprovideexcellentattenuationlevels.Theyaresuccessfullyinstalledintunnels,abovegroundandonelevatedrailtracksworldwide.Inparticular,theyareavailablefor

– Trams – Urbanmasstransitsystems – Freighttrains – Highspeedpassengertrains

Formoredetailspleasedonothesitatetocontactus.

GERBspringelementsaredesignedto take loads ranging from 10 to 300 metric tonsandevenhigher. GERBprovideselasticsupportsystemsnotonlyfor entire buildings, but also for floating floors and room-within-a-room structuresusingembedded“jackup”springelementsorsupportingspringunits.

Thevibrationandstructurebornenoiseisolationofconcert halls, TV studios, nightclubs, IT rooms, swimming pools and even helipad platforms are justaselectionofexamplesofprojectsthatGERBexecutesonadailybasis.

ASpringSupportedOfficeBuilding aboveRailTracks,

Paris, France

TheTrackbedIsolationofaHighSpeedLine, Cheonan,Korea

ASpringSupportedResidentialBuilding, Berlin, Germany

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Seismic Protection / Tuned Mass DampersTheRetrofitofaHospitalBuildingbyaTunedMassControlSystem,

Slobozia,RomaniaEARTHQUAKE PROTECTION OF MACHINERY, BUILDINGS AND OTHER STRUCTURES

Manycountrieshavetolivewiththeconstantthreat ofearthquakes.Inresponsetothis,GERBisofferingvisco-elastic devices to ensure the earthquake protection of heavy machinery and structures.Machines,equipmentandbuildingswithsuchdeviceshavebeenabletosurvivepowerfulearthquakesoverthe last years in many seismically prone areas of the world.

Withso-calledTuned Mass Control Systems, GERB hasbeenabletoeffectivelyprotectlargebridges,newandexistingsensitivebuildingssuchashospitalsandofficebuildings.

Forfurtherinformationpleasedonothesitatetocontactus.

TUNED MASS DAMPERS (TMDs)

Widespanstructureslikebridges,stairsandroofs,as well as tall, narrow structures such as chimneys, antennas,mastsandskyscrapers,canbeexcitedtovibratebywindforces,pedestrians,car or railway traffic and earthquakes.

GERB’sTMDsarespeciallydesignedtoreducethesevibrationsofheavystructuresandfortherequired application.

Consistingofspringorpendulumsystems, oscillatingmassesandViscodampers®, they are passive type dampers that feature the followingadvantages:

• Do not require an energy source• Simple in design and maintenance free• Highly effective and provide maximum

reduction of vibrations• Tunable on-site, even after years of

operation

TheMillenniumBridgewithTMD-Retrofit,London,UK

AHighRollerwithTMDsforProtectionfromWindForcedVibrations,LasVegas,USA

TheprotectionofaSkyscraperfromWindForcedVibrations,Doha,Qatar”6

Special Applications

RetrofitofaTurbineFoundationSystemata Power Plant, Germany

SHIPBUILDING AND OFFSHORE FACILITIES

Unquestionably,noiseandvibrationcontrolplaysasignificantroleinensuringsafetyandcomfortonshipsandoffshorefacilities.

SpecialspringelementsandTMDshavebeen developedbyGERBforelasticsupportandvibrationreductionofengines,powergenerators,compressorsandotheraggregatesonshipsandoffshorestruc-tures.

GERBproductsforshipandoffshoreapplicationsfeaturemanybenefits,including:

• Resistant to high and low ambient temperatures• Resistant to fire and corrosion• Non-aging and maintenance free• Easy to install

MICROSEISMIC

Impressively,itisnotonlydisastrousvibrationsbyearthquakes,trafficandindustrialoperationthatcanbereduced.

GERBalsoprovidesvibration control systems for buildings, machinery and equipment in the micro and nano process industries.

Extremely sensible machinery and equipment such as3D-measurementmachines,opticandelectronicmicroscopes,andITequipmentcan now be protect-ed from vibrations thanks to special spring elements and dampers.

GERBprovidesdesign,civilengineering,productsforisolation,installationandinspectionservicesthatcanbetailor-madeforyourspecificrequirements.

RESTORING AND UPDATING OF FOUNDATION SYSTEMS

More than one-third of all power plants throughout the world are aged over 30 years. Many of them operate machinery and equipment that needs to be updatedwithnewer,highercapacityturbogenerators,coalmills,boilerfeedpumpsandfans. Largemachinefoundationsinotherareasliketheautomobile,paperprinting,orchemicalindustrieshavealsofoundaneedforrestorationandretrofit. Forover50years,GERBhasupdatedmachinefoundationsformanyleadinggroupsinpowergeneratingandotherindustries.

GERB’s full service offer includes:

– Soilandfoundationassessment– Proposalsfornewmachinefoundationsystemswithfulldocumentation(i.e.staticanddynamicanalysis,generalarrangementandreinforcementdrawings,re-barlists)

– Supplyofelasticfoundationsystems(ifrequired)– Constructionsupervisionandstartupassistance

Foryourspecialrequirements,pleasedonothesitatetocontactus.

TheprotectionofaResearchCenterfromMicroseismicVibrations, Bucharest, Romania

AnOffshoreTowerwithTMD,NorthSea

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