RHOMBERG RAIL

SLABINTELLIGENT

TRACkVERSATILE

IVESEffICIENT AND SOLID

PHILOSOPHY AND CONSTRUCTION

DuringthedevelopmentofIVES,thevariouspossiblecompo-nents,materialsandworkingprocesseswereinvestigatedandmatchedtooneanothertocreateanoverallsystemthatworkswellandiscost-efficient.Theresultisatechnicallyandeconomi-

Rhomberg Rail can call on years of theoretical and practical know-how in the various types of slab track construction. And the result is IVES, the latest development in ballastless track construction.

IVES stands for intelligent, versatile, efficient, solid. All these characteristics are embodied in this integrated concept, which is based on an analysis of the advantages and disadvantages of various long-term tested slab track techniques.

IVES – SYNTHESIS Of DESIGN AND CONSTRUCTION EXPERIENCE

callyoptimisedformofconstructionthatreducesnotonlycostsinordinaryfieldsofapplicationofslabtrack(high-speedtrackinhighlydevelopedregions)butalsoallowsaconsiderablywiderrangeofusesofthistechnologyasanalternativetoballastroadbed.

The IVES efficiency principle: Loadcapacity,accuracyandamountofworkareideallymatchedtotherespectiverequirements.Intermsofcostandeffort,IVESinvolvesasmuchasnecessaryandaslittleaspossibleoftheseresourcesinallareasofconstruction.

Load capacityThe load capacity requirement decreases as the stresses from the railway loads decrease from the top downwards.

AccuracyThe influence of

manufacturing accuracy on vehicle

track guidance decreases

from top downwards.

Overall qualityThe requirements for overall quality are consistently fulfilled.

The amount of work involved in

building the track decreases from the bottom upwards.

Amount of work

BasicprinciplesofIVES

EffICIENT USE Of COMPONENTS AND MATERIALS

GROUTING IN THE RAIL fASTENINGSAhigh-strength,rapid-hardeninggroutingmortarisusedsothatgroutingtherailfasteningsintotheprecastconcreteunitsisaneasy,quickandreliableon-siteprocessthatachievesahigh-qualityresult.

BASE LAYERThebaselayerispreferablyconstructedofroadasphaltus-ingconventionalmethods.Asarule,thebaselayershouldhavedowelsinsertedtocreateaconnectioncapableoftransferringshearfromthestructuralelementsintothebaselayer.

STRUCTURAL ELEMENTSThesecomponentscarrythegrouted-inrailfasteningsandtransferthevehicleloadintothebaselayer.Astheydonotdirectlydeterminetherailgeometry,theycanbemanufac-turedintheappropriatequalitywithoutadoptingtoohighatechnicalstandardsothatcostscanbekeptrelativelylow.

OneofthekeyideasinthedevelopmentofIVESwastheefficientanddeliberateuseofcomponentsandmaterialswithqualitiesthatmatchtheirrespectiverequirements.Likewise,manufacturingmethodsandtransportandconstructionprocessestakeintoaccounttheobjectiveofincreasingefficiency.Theresultsareconstituentpartsthatarequickandeasytoproduce,transport,handleandinstall.

RAIL fASTENING SYSTEMTheDFF304systemisbasedonprovenandapprovedcom-ponents.Thesupportpointsweremodifiedsothattheyprovideaformofdirectfastening(groutedintotheprecastelement)tofulfilthehighestdemandsforlong-termpull-outresistanceandconvenienceofinstallation.

RailfasteningDFF304

Structuralelement

INSTALLATION SEqUENCE

CONSTRUCTION Of BASE LAYERThebaselayer,preferablyconsistingofasphalt,isnormallylaidwitharoadfinisherinaccordancewiththebottom-upprinciple.Theaccuracyrequirementsarelowerthanmostroadconstructionprojectsandshouldbequiteeasytoachieve.

PLACING THE STRUCTURAL ELEMENTSThepositionanddepthofthestructuralelementsareroughlydefinedbythepreinserteddowelsandthepropertiesofthebaselayer.Theiruniformlylevelsurfaceallowsawidevarietyofvehiclestorunonthemdirectlyafterplacing.

fORMATION Of THE TRACk GRIDThetrackgrid,consistingofrailsandtrackfastenings,isformedusingproventechniques.Theplasticdowelboltsoftherailfastenersprojectintotherecessesinthetopofthetransversestructuralelements.

fINE ADJUSTMENT Of THE TRACk GRIDThetrackgridisbroughttoitsprecisepositionandlevel.Thetop-downprincipleallowsalltheinaccuraciesfromthepreviousstepstobecompensatedforlater,evenataverylatestageinthework.Therecessesinthetopofthetrans-versestructuralelementsallowrelativelylargerangesofhorizontalandverticalcorrectiveadjustments.

fIXING THE RAIL SUPPORT POINTSThevoidsbetweentherailfasteningsandthestructuralelementsarefilledwithhigh-strengthmortar.Theintentionhereistopermanentlyfixthetrackgridexactlyinthedesiredposition.

Asphaltbaselayerwithdowels

Structuralelementswithtrackgrid

Placedstructuralelements

INSTALLATION TECHNIqUE: SIMPLE, RELIABLE, qUICk, fLEXIBLE

THE SUCCESS Of THE IVES INSTALLATION CONCEPT IS BASED ON THE fOLLOWING:

•Combination of bottom-up and top-down installation principles•Efficient distribution of the accuracy and amount of work

involved•Efficient use of material and component qualities•Appropriate simplification of components

THE IVES SYSTEM AT A GLANCE

Intelligent:

• Flexibilityofadaptationtosuitthestateoftechnologyavailableattheinstallationsitethroughitsrelativelysimpleandfunctionalconstruction:structurallayersandelementscanbegenerallyconstructedonsite,whereverrun-of-the-millroad-buildingandmanufactureofsimpleprefabricatedunitscantakeplace.

• Flexibilityoftailoringtheamountofworkinvolvedtosuitprojectresourcesthroughasimplestep-by-stepapproachtoinstallation:canbeconstructedequallywellusinglow-techequipmentorhighlymechanisedplant.

Versatile:

• Canbeusedforvirtuallyalltypesofpermanentway(stand-ardgauge,rapidtransit,low-andhigh-speedrailways).

• Thesimpledesignofthestructuralelementsallowsindi-vidualcomponentstobespecificallymodifiedtosuitthetrackconfiguration.

Efficient:

• Greateravailabilityofcomponentsthankstothesimple,standardiseddesignofthestructuralelements.

• Universalcomponentdesign(oranynecessaryadjustmentscanbedoneatrelativelylittlecost).

• Highdegreeofmechanisationispossibleduetosimplestep-by-stepinstallation.

• Interruptionofconstructionisnoproblem,astheinstallationstepsarenottime-dependent.

• Shortwaitingtimesbetweeneachinstallationstep• Trackunderconstructioncanbeusedfortransport

purposesatalmosteverystageofinstallation• Earlydefinedpointintimewhenthefinishedtrackis

capableofsupportingloads

Solid:

• Consistentlyhighquality• Efficient,high-gradematerials• Provenmaterialsandcomponents

UNIVERSAL APPLICATION

Different railway types – same track system:TheIVESslabtracksystemcanbeusedforalmostanytypeofpermanentway(standardgauge,rapidtransit,low-orhigh-speedrailway).Becauseofitssimpleformofconstruction,anyrequiredmodificationscanbemadequicklyandeasily.

Changes to the track configuration – easily done by sticking to the basic principlesThesimpledesignoftheprefabricatedconcreteunits,inparticulartheirshapeandprecisedimensions,allowseachcomponenttobespecificallyadjustedtosuitanytrackconfiguration.

Applicationaslongitudinalstructuralelementsonbridges

www.rhombergrail.com

Since2001RTE’sdevelopmentshaveexpandedthecompetenceprofileoftheRhombergRailGroupintheareaofrailwaytracksystemsandmeasuringtechnology.Theteamconsistsofawiderangeofexperts,whichincludeconstructionengineers,surveyors,electronicengineersandsoftwareengineers.Theydevelopandoptimisecomplexsystemsforavarietyofspecialiseddisciplines.

ThecorecompetencesofRTETechnologieGmbHarethedevel-opmentoftracksurveyingsystemsandslabtrackrailwaysystems.Allthesedevelopmentsarecharacterisedbytheirpracticalap-plicationasallsystemshavebeentestedandappliedtoin-houseprojectsfortheRhombergRailGroup.RTETechnologieGmbHalsodevelopssolutionsinothertechnicalareas(mechanicalconstruction,softwaredevelopment,geometrytasks,digital

imageprocessing,andmicroprocessorcontrolsystems)foroutsidecompanies.OurofficeinSalzburgisfullyequippedwithatesttrackandthenecessaryinfrastructuretosupportCADsoft-wareandelectronicdevelopments.

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