HUE026656T2 - Concrete sleeper and method for the production thereof - Google Patents

Description

CONCRETE SLEEPER AmpETTO> Wm IpE PRODUCTION THEREOF

The toveßdo» relates to j method f«» ptófacteÉng a concrete steeper $$:..fai^a dyntmùe iéa#: I s steeper mmià, A vMm® Äüjper is ktmWttt Írom the ifeiMtó OS-A~492Sd§4 its which east steel plates are «sad I order to form bearing apiaees on which so insert of plasties material Is arranged on which the rails ars positioned. He wear tessdhhch is to be inereased la this way,

Ihf document GB-A-223Í9Ö2 proposes a concrete sleeper which has m alaaic^nssistsot::layer which ihpsa rail bearing nœfâm tbs aheasioreresistent layer «sapis particles of Éumininm oxide which are a eohSihisht parr of a casneni mistere, 1¾¾ JF-A-40222§||í áiseíósss a concrete sleeper with rail bearing srs&ees soda lower bed region, conslretng of a standard coacep#toeHAie rail hearing surfaces arid |e lewer Íred region constat of a mors- venr-resisiant material than the remaining region erf the sleeper, ta rhe e vent of high dynamic loads wear andter abrasion often occurs in the rail support point regions as well as on the underneath side of the concreto sleepers. Tinte wear occurs through the compression of plastics layers which are insetted between the rail ttssti the concocts body of the cottcrcte sleeper, or through shifts irt le granules· of the ballast bed underneath the concrete sleeper. Such abrasions appear for example also during the braking of rhe enormously long trains in rhe USA and Australia wherein the welded rails cm be displaced hy some tmrpteea millimetres, which naturally leads to a corresponding abrasion impinging, on the concrete sleepers.

In the event of a. pulsating vertical load la plasdes layers are also «atepied add coteracted in the horizontal direction and consequently mb on the concrete surihee of the concrete sleepers, The ballast partíciós again mb on tin? concrete body on tbe ustdemeath of the cohgtete sleepers. This la.:o^tóp.:^tRg'.retepved at the rail support points tard on Ere underneath, of Ere conerem sleeper. As a result of this Ele geometry -and load bearing; capacity of Ere concrete sleepers Is affect# ever tine so Erst these are no longer capable of being safe and srahle support elernenss.

The object of the invention is therefore to provide a method lor manufacturing a concrete sleeper of the type mentioned at the beginning which ooaoieteetethose wear prepretire ar a low cost.

This is álneved: aecsmihg to the kvenEon by providing & method with the method steps according to claim 1, As an alternative this is also achieved by a method having the method steps according to claim 2, & addition ihe invention relates to a concrete sleeper witch: Is manafmhtrëd by a melhod according to the Invention. IE sceordMce with Ere mverelop it is proposed thar rhe ahmsiom, wear- or tenslouuresistsnt material is conuseted wet on we? with the standard concrete in a sleeper mould and A cured, it Ihre, depending; on the posttiop hi; the sleeper, first the abrasion-, wear- or torsion-resistant material. is Itetedoeed: Os special cteterete into Etc steeper mould and then the standard concrete is ft! led in,

Accordfeg ttr île iaveotkm, wfâtgjglft mailed, % simáiéiig the different plmtiekesnetete mafedais immediately ose sifiôr feeoïfeer wet m wet île SíSí^sMíeöeeí^íg Iád ÉfespectaJ concrete ae#:jÉked:*Éfe om mother through aglaiö» or vtbtaiss. is 'Ée. bouafeuy region m feat they form a muimifefe body v(àfeb:'fe.:Sô^^-iey«i !s hfeguttle desired dâÂèsi leadmg resistance or abrasion resistance, Àîtcroativeiy,: la a ferfeer development of fee method aecording to fee: invention it: sen be proposed feat: a jmsf««tj||y $p$tbrfated plate of plasties is used, wherein île piste is snîtpdoeei: psefeiiljiy in the Hűid or fell pfesfies iorm Ä#«Ä motdd end loading oeeers wish és eoMrsfe id ills state,

Farther advss^ges sM details of tie iavaatkrn at« apparent la fee Mlowing description of some exemplary embodiments as well as from île itrawùîgs, in which;

Figs, f end 2 show a séPido&l view through a slipper mootd 1er ammsllctntmg a concrete: fefeper aecordutg to île Invention wife abrssionwesislaot ralf leasing sorfecess wherein a sMi: which is not according to île invention is shewn on fee effet;

Ftp, 3 and 4 slow a kugptadinai sMtlonai view ferough a steeper mould in two different tiding stages for manufacturing a concrete steeper, whiel is nor according to fee invention, with abrasion-and/or wear-resistant matériái in dminwp entterete sieeper;

Ftp S and b slow longitudinal seetfenai views fertmgl d siegper bmdtd daring fee manatactore of a concrete sieeper, which is not according to the invention, with high tension resistance in tie tower bed region, and

Figs,:·? top slow: cross -sections] views tltongb a: Sleeper fepuidife die vfeloos: stages:: of manufacturing a codcrete sleeper according to fee Irvemion which Is: exposed; id high tensile stresses in the middle pf fee upper sister

Flgnre ! slows a sleeper amt# I which baa msmlding .regions for lobbiig rad Ifearingddriaces 2, In orderidthe event of ligl) dvrtamic, where applicable pulsaiing vertical, stresses tst achieve an inereased abrasion* andwogt-teisinnes in the region of these rail Ifeaflig surfaces 2 which serve p Sirpport learidgs, either steal: Ingles: 3 ate Itifedsteed print to filling in fee sleeper conpete, as shown os the right in Figure I, or however in aeoetdapes: wife tie inversion a first concrete layer 3* of an abrasion- ami weanresistam ntaierial is applied, as la slowl On fee lett is Figure I, A sfendpd concrafe 4 Is Ism 'introduced, as shown in Figure |, A prefabriMted eomtmneah in fee present case tie steel angle 3, Is thereby bonded into tie pressure-resistant standard concrete 4 Or intimate: mixing of tie two types of oonemte is achieved by vibration and agitation on tim kl in the femndáry region, so feat a monolithic body is lomfed which las however over ;|s height tie desifed difierent alrasron- and wear-resistance.

Tie method tántarntfectormg a sleeper with high abrasion- and iwear-rptstMce in fee lower bed melon is shown is Figures 3 and 4. To this anti fa st fee standard concrete 4 is introduced into fee sleeper mould 1 except lor a slight Isyor thickness which remains lee at fee top, shdffen a lapa of an témám- apd/or wearmtsistant special eonetele 3” is applied still in fee wet state of fee standard concrete 4,

Claims (4)

lis exemplary mbotehot sccot'ding to Figures ? and 6 Involves the tnsKufhetare of s sleeper for rati seeflçms Is whiéh high tensile teils «ccur to th« lover regio» of the concrete sleepte. fist again te súthöárd concrete 4 with á high prexs«r« resistance is mütktoeed sbïs the sleeper mould 1 to «beut hallway ap tbs height of the •:te^er,::Ä:#^a á ^seM4<ss«M« J” with high tensile strength is added wherein again a mtmolifhle imndutg of its bs© stats pfcoasteè achieved by:CôS)|^ts5g:»d4Sbyat:feg lOiit^tesiid^.ssrteis,·. F ipa«« Ti» f finally show «a ethhoduneni là vhleh si 'mmm. steepen mlm-'haett rnrnèâmmê'M. Figures 5 and 6, k prepared for the case where it rusts in the middle which has the result das additional tensile stresses can occur m th« upper side in the middle, To this sad, its? « iénsloa-reslstsatt concrete layer 3Wï is added as a Sm cnnetete layer into th« noddle ht the sleeper tanuld I, lien tit® saratai: smodtud epsmmie 4 is hütsdüeed into tit® sleeper mould 1, and then .analogous hátit Figures '$ aPilfi the1 testön-maistam spéciül concrets A”· is:|strpdpç«d: as a farther concrete layer. Tie inveptinu defined by the #f Is not fiudted to the illustrated ese*s|ddty ensboditnmdx, As a result of the dtietunf usé of dhrasids- or wear-resistant special concrete sorts as well: as tension-resistant concrete in different sleeper regions if endld he possible by way of example to eontblfre also the variations seeardfog to Figures 5 to 9 whicts utcteas.c the ietssite strength v|h the variations la which a high: abrasi084esh5f5«tve: Is achieved,: m ts ilhtstfaicd itt t igores 1 to 4, VASÚTI BETON AU &amp;$ ELJÁRÁS ANNAK ELŐÁLLÍT ÁSÁRA Sxstbadahni Igénypontok

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