US3756507A - Railroad track bed - Google Patents

Railroad track bed Download PDF

Info

Publication number
US3756507A
US3756507A US00169042A US3756507DA US3756507A US 3756507 A US3756507 A US 3756507A US 00169042 A US00169042 A US 00169042A US 3756507D A US3756507D A US 3756507DA US 3756507 A US3756507 A US 3756507A
Authority
US
United States
Prior art keywords
resin
bed
filled
space
synthetic resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00169042A
Other languages
English (en)
Inventor
S Hanig
K Mienes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stahlwerke Pein Salzgitter AG
Original Assignee
Stahlwerke Pein Salzgitter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19702039033 external-priority patent/DE2039033C3/de
Application filed by Stahlwerke Pein Salzgitter AG filed Critical Stahlwerke Pein Salzgitter AG
Application granted granted Critical
Publication of US3756507A publication Critical patent/US3756507A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/008—Drainage of track
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
    • E01B3/38—Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers; Layers of concrete supporting both rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/001—Track with ballast
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
    • E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers

Definitions

  • a railroad track bed consists of a roadbed sealmgly 52 us. Cl. .Q. 238/2 suppming a multiplicity of Rmgiwdinally intercon- 51 lm. Cl E0lb 1/00 "ected Slabs and defining a space between [58] Field of Search 238/2 3 4 283 lateral SUPPMS and Slabs which is filled with a 2258/2322. lular resin or elastomer.
  • the filling consists in whole or in part of preformed foamed synthetic resin bodies, [56] References Cited preferably locked together in a continuous resin UNITED STATES PATENTS (mam) 3,656,690 4/1972 Hanig 238/2 10 Claims, 10 Drawing Figures PAIENTEBSEP Man I 3.756501 SHEET 2 or 4 H'A'mc MIENES SIEGFRIED KARL I N VENTORS,
  • ballast crushed stone, gravel or the like in whichties or sleepers are partly embedded.
  • the ties or sleepers are partly embedded.
  • the ballast is intended to provide rapid draining of the bed, cushioned support' forthe.
  • the hollow bodies according to the present invention may be pillows or blankets formed by a synthetic-resin foil to be positioned, by themselves, as units within the space below the slabs.
  • they may be part a foamedsynthetic resin along the underside of the slab and to provide the pillow orv blanket in the form of a foil underlying this layer such that the compartment between the foil and "the layer is filled with foamed synthetic resin.
  • One or, more such'pillows'or blankets may be providedacross the width and/or length of each slab and we may fill any spaces between. the blanket and within the compartment defined between the slab and the support surfacewith,additionalsynthetic resin preferably, of the foaming type,
  • the preformed pillows or blanketsand/or the pillow or blanket formed in situ withathe aforementioned synthetic-resin foil may, be filled, in turn with foamed synthetic resin and/ora mixture of foam-filled'bodies and foamed synthetic resin.
  • the foam-filled hollow bodies may simply be introduced into thespace between the concrete slab, and the synthetic-resin surface (without interposition of a foil), although itispreferred to bind the foamfilled bodiesin a synthetic-resin matrix, preferably of a foaming synthetic-resimln all cases, the foam bodies fill the spacebetween the slab and the support surface and adjust oraccommodate to the, configuration of the support surface.
  • the foam bodies according to the invention may be; pouches. or bags of synthetic-resinfoil filled, in turn, with afoamed synthetic resin or merely introduced into the space between the slab and the support surface, or into a pillow or blanket disposed between the slabv and the support surface.
  • the foam-filled bodies may be balls of inflated foil or elastomeric members (e.g., balloons) filled with foamed synthetic resin, or blown syntheticresin bodies, having a sealed or densified outer shell and a cellular core.
  • the present invention provides, as a support for the rails of a roadbed, concrete plates or slabs of rectangular configuration which are longitudinally interconnected and are preferably mounted upon a bed of ballast or gravel as a roadbed after cementing of the ballast and the provision of a foundation for the slab.
  • This foundation is preferably a pair of longitudinal ridges
  • the hollow bodies can be pre-formed, but preferably consist of single or multiple pouches, balls or balloons which may be filled with foamed synthetic resin or epoxy, held in place by a hinder or a foamed synthetic resin.
  • the bodies may be unitarily formed from synthetic resin with a cellular core and a densified outer shell.
  • the filler in this case, preferably to be either cellular material alone or a cellular material alone or a cellular synthetic resin filled into hollow bodies which are introduced into the space below the cushion layer.
  • the cushion layer preferably will be a pre-formed slab of a foamed synthetic resin, preferably a polyester foam which may be reinforced with cellular-glass particles, fiberglass, or the like, thereby forming a matrix for the hollow bodies; it may likewise be a polyethylene resin or a polyester resin concrete.
  • the former since it can be mixed with blown-glass bodies or other reinforcing and filling materials in a conventional cement mixer at the railbed site.
  • the polyurethane foam has a greater pot life or hardening time and thus is preferable to the polyester of short pot life.
  • the binder need not be reactive foam capable of bonding to the hollow bodies or to the concrete and the support surfaces, but may be so reactive if so desired.
  • polyurethane materials are epoxy resins and polyester concretes which may be provided with hollow glass balls, expanded glass or glass fiber as fillers.
  • the synthetic resin of the fillers and the synthetic resin of the hollow bodies, foils and cushion layers are of similar or chemically interactive materials, the entire mass beneath the concrete slab is of a unitary and structurally monolithic construction.
  • prefoamed bodies for example pre-expanded polystyrene beads which may be introduced as a loose filler into the space between the concrete slab and the support surface. These beads may be expanded in situ to fill the space and bond the particles together. Expansion in this matter may be accomplished by introducing steam into the space between the slab and the ballast bed which provide a form in which the beads are expanded. Preexpanded polystyrene beads may also be mixed with liquid epoxy resin and introduced into a slurry between the ballast and the concrete slabs and foamed and/or hardened in place.
  • An elastic junction between the concrete slabs and the ballast is provided by the aforedescribed system and by incorporation into the synthetic resin mass filling the space, of various elastic particles such as flakes of foamed synthetic resins (alone or in combination with solid or hollow particles), for example a crosslinked polyethylene foam or chopped or ground polystyrene foils. Alternatively any ceramic or other filler may be used in conjunction therewith.
  • the foil When the foil is provided as a loose covering on the underside of the concrete slab and the space between the bottom of the slab and the foil is filled with the solid or hollow bodies of the foamed resin or other material in admixture with the foaming binder, or a foamed preformed plate partially fills the space, there is the advantage that relatively little foam binder need be introduced into the space, especially if the space or bag is partly filled with the hollow bodies. The construction process is thereby made more rapid. There is, however, a slight danger that the foaming or injection of the binder will tear the foil.
  • synthetic resin slabs are provided between the hollow bodies and the concrete slabs, they are preferably composed of cellular polyurethane elastomers.
  • FIG. 1 is a transverse cross section through a portion of the railroad bed embodying the present invention
  • FIG. 2 is a similar cross section of an embodiment of the present invetion wherein a synthetic-resin slab is provided between the foil pocket and the slab;
  • FIG. 3 is a similar view of a roadbed which omits the layer of ballast
  • FIG. 4 is a fragmentary transverse vertical cross section illustrating another embodiment of the invention.
  • FIG. 5 is a cross sectional view through a foam-filled ball according to the invention.
  • FIG. 5A is a cross section illustrating still another bag configuration according to the invention.
  • FIG. 6 is a sectional view through a foam pouch according to the invention.
  • FIG. 6A is a section through another hollow body incorporated in the roadbed
  • FIG. 7 is a diagrammatic plan view of the roadbed embodying the invention.
  • FIG. 8 is a cross sectional view through another portion of the roadbed according to our invention.
  • FIG. 1 we have shown a roadbed l which comprises upon the usual graded earth surface F, a mass of ballast, removed from an earlier roadbed, cleaned, and piled to a depth d 30 cm to form the crown of the bed.
  • the ballast l is retained between a pair of ridges 2 extending longitudinally along opposite edges of the roadbed and having upwardly converging cross sections.
  • the ridges 2 are formed from concrete or by a mixture of ballast with a mortar and are, therefore, sealed against penetration of moisture through the system.
  • the upper surfaces 3 of ridges 2 are flat and receive rubber sealing strips 4 upon which concrete slabs 10 are mounted. As shown in FIG. 7, the concrete slabs are longitudinally interconnected in a rectangular configuration.
  • a space-5 which receives a pouch 13 of a synthetic-resin foil.
  • the pouch is flexible and, as can be seen from FIG. 1, adjusts to fill the space 5 and contains cellular bodies 9 in the form of inflated members 20 in a syntheticresin (preferably foamed), reinforced-concrete or like binder 11.
  • the pocket 13 is placed in position before the foamed-resin filler 20, ll solidifies.
  • the foam mixture may be injected into the sack 13 after the latter has been placed inthe space 5 or after the latter has been filled at a location remote from the railbed, with some of the hollow bodies 20.
  • Injection of the resin mixture may be carried out in the manner shown in the commonly assigned application Ser. No. 21,953 filed Mar. 23, I970 by Siegfried H'ainig, one of the present joint inventors (now U.S. Pat. No. 3,656,690).
  • the sack containing the hollow bodies is placed in position above the ballast 1, the slab is disposed thereabove, and a synthetic-resin binder of self-hardenable material, e.g., epoxy resin or a polyurethane foam, with its catalyst.
  • a synthetic-resin binder of self-hardenable material e.g., epoxy resin or a polyurethane foam
  • a synthetic-resin plate 15 e.g., a glass-reinforced polyurethane foam
  • a foil sack 16 partly filled with hollow bodies 111 as will be described in greater detail hereinafter.
  • the sack 16 is formed by sealing the outer edges 22 of a foil 21 to the plate along the outer portions of concrete slab 110. Between the underside 17 of the foil 21, therefore, there is produced a space having a height of about 1 cm and filling the interior of the pouch.
  • a synthetic-resin foaming mixture may be injected, as previously discussed.
  • the hollow bodies 111 may be polystyrene beads or pellets which are pre-expanded and subjected to heat treatment to densify the outer skin of these bodies.
  • steam can be introduced into the ballast bed to foam the synthetic-resin to fill any remaining gap between the synthetic-resin plate and the ballast.
  • This sytem has the advantage that the major portion of the space can be filled by pre-formed synthetic-resin plates, thereby minimizing the extent to which the synthetic-resin within the sack must expand. This also reduces the amount of foaming mixture which must be introduced.
  • FIG. 3 we have shown an embodiment of the present invention wherein the space 217 between the supporting surfaces 201a and the slab 210 is filled with two pouches 216 of a synthetic-resin foil which, in turn, are filled with hollow bodies 211 and a foaming mixture.
  • the foundation is formed with the ballast and the sealing strips 204 are provided directly upon the foundation and seal against the foamed synthetic-resin plate 215.
  • the latter partly fills the space between a pair of supporting piers 202, the underside of the slab 210 and the upper surfaces 201a of the foundation 201.
  • a heatable synthetic-resin 225 is introduced, preferably in a mixture with foam particles, shavings or bodies.
  • the rails 12, 112 and 212 are mounted upon the concrete slabs in the usual manner.
  • FIG. 4 we have shown an arrangement in which a plurality of pouches 316a, 316b are fromed along the underside of a concrete slab 310 by sealing the edges 316a, 316a", 316b', etc. to the underside 310a of the slab.
  • a sealing strip 304 may here be provided above the edge 316a, the pouches are filled with hollow bodies 311a, 311b, the former being, in turn, pockets of a synthetic-resin foil 31 1b filled with a foamed or foamable synthetic resin 3l1b" which, in turn, may include foamed or inflated particles 31 1c in a foam-resin matrix 311d.
  • the pocket 311b is shown in detail in FIG. 6.
  • FIG. 6A An alternative to this hollow foam-filled body is shown in FIG. 6A in which the hollow body 311a is shown to be empty and to have been inflated prior to incorporation into the cushion underlying the slab.
  • the balls 3110 of FIG. 4 may have the configuration illustrated in FIG. 5
  • an inflated foil ball 31lf may be employed as shown in FIG. 6.
  • the slab 410 again rests via seals 404 upon ridges 402 flanking the ballast 401.
  • loose expandable beads or pellets 411 are introduced into the space 405 and are foamed in situ by the introduction of steam into the ballast bed (see application Ser. No. 21,953). Thereafter, or, in addition, a synthetic-resin matrix 411a of a hardenable resin is introduced. Foil pockets are here avoided.
  • FIG. 7 shows, in plan view, a plurality of plates 510, 510' interconnected at 530 with any gap filled with a sealer 531.
  • Plates 532 mount the rails 512 upon the concrete slabs which, in turn, are mounted upon ridges 502 confining the ballast between them.
  • a pocket of foamed synthetic resin 511 in which hollow bodies 51 1 are anchored, is provided between the ballast and the concrete slabs.
  • a railroad bed comprising:
  • a bed of ballast forming a generally horizontal support surface
  • cushion means substantially filling the space between said slabs and said surface and in contact at least with said bed of ballast, said cushion means being formed at least in part by at least one a hollow body filled with a foamed synthetic resin, said hollow body having a flexible outer skin around said foamed synthetic resin;

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
US00169042A 1970-08-06 1971-08-04 Railroad track bed Expired - Lifetime US3756507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702039033 DE2039033C3 (de) 1970-08-06 Eisenbahnoberbau, bei dem die Schienen auf vorgefertigten Betonplatten ruhen

Publications (1)

Publication Number Publication Date
US3756507A true US3756507A (en) 1973-09-04

Family

ID=5778980

Family Applications (1)

Application Number Title Priority Date Filing Date
US00169042A Expired - Lifetime US3756507A (en) 1970-08-06 1971-08-04 Railroad track bed

Country Status (4)

Country Link
US (1) US3756507A (enExample)
BE (1) BE771067A (enExample)
FR (1) FR2104055A5 (enExample)
GB (1) GB1361791A (enExample)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907200A (en) * 1972-10-24 1975-09-23 Regie Autonome Transports Track and method of laying track on a concrete road bed
US4084381A (en) * 1977-01-19 1978-04-18 Woodbine Corporation Stabilization of earth subsurface layers
US4406403A (en) * 1979-01-23 1983-09-27 True Temper Corporation Method of providing a containment reservoir
US4679731A (en) * 1982-10-06 1987-07-14 Akzo Nv Railway track structure and a method of building such structure and bags filled with ballast material
EP0409356A1 (en) * 1989-07-21 1991-01-23 Voorbij Groep B.V. Process for laying a foundation, and foundation
US5163614A (en) * 1988-06-03 1992-11-17 Beton-Es Vasbetonipari Muvek Railway roadbeds with rail slabs, and method for preparing
US5487501A (en) * 1991-07-09 1996-01-30 Clouth Gummiwerke Aktiengesellschaft Shock absorber component for railway track having pourous rubber particle core enclosed by cover layer
US6502760B2 (en) * 1998-06-09 2003-01-07 Coventry University Rail support
US20030052182A1 (en) * 2001-09-18 2003-03-20 Bojji Rajaram Self stabilizing track system
US20060124760A1 (en) * 2002-10-01 2006-06-15 Wolfgang Markus Fixed track for rail vehicles and method for production thereof
DE10218309B4 (de) * 2002-04-24 2007-01-25 Dyckerhoff Ag Fahrweg für Schienenfahrzeuge mit einem Schotterbett für Gleise, Verfahren zu seiner Herstellung und eine Bindemittelmischung zur Verwendung in dem Verfahren
US20090121035A1 (en) * 2005-11-15 2009-05-14 Martin Kowalski Fixed carriageway for rail vehicles
US20130140373A1 (en) * 2010-04-21 2013-06-06 Bayer Intellectual Property Gmbh Polyurethane ballast layer, the method for preparing the same and the use thereof
US20140161526A1 (en) * 2011-03-24 2014-06-12 Bayer Intellectual Property Gmbh Process for the production of ballast
CN107237220A (zh) * 2016-03-28 2017-10-10 北京知易普道技术有限责任公司 可填料式位移调整补偿装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT352164B (de) * 1977-09-07 1979-09-10 Getzner Chemie Gmbh & Co Daemmzwischenlage fuer die elastische lagerung der bettung von gleiskoerpern
EP0355208A1 (en) * 1988-08-24 1990-02-28 Voorbij Groep B.V. Method for providing of a foundation and foundation
DE19735449A1 (de) * 1997-08-16 1999-02-18 Butzbacher Weichenbau Gmbh Unterlage wie Schwelle
US9869065B2 (en) 2012-11-14 2018-01-16 Versaflex, Inc. Ballast mats and methods of forming the same
US9441335B2 (en) 2012-11-14 2016-09-13 Versaflex, Inc. Integrated ballast mat
CN106381795A (zh) * 2016-09-28 2017-02-08 昆明理工大学 一种风冷热管强化换热高速公路路面降温冷却装置
FR3121905B1 (fr) 2021-04-19 2023-03-03 Psa Automobiles Sa Véhicule terrestre à compartiment avant étanchéifié par un joint appuyé sur une surface d’appui quasi-continue

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432098A (en) * 1966-02-16 1969-03-11 Japan National Railway Method of filling gaps in permanent rail beds
US3451621A (en) * 1967-05-26 1969-06-24 Trw Inc Rail anchor
GB1180689A (en) * 1967-07-24 1970-02-11 Shell Int Research Road surface structure
US3656690A (en) * 1969-03-22 1972-04-18 Ilseder Huette Railbed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432098A (en) * 1966-02-16 1969-03-11 Japan National Railway Method of filling gaps in permanent rail beds
US3451621A (en) * 1967-05-26 1969-06-24 Trw Inc Rail anchor
GB1180689A (en) * 1967-07-24 1970-02-11 Shell Int Research Road surface structure
US3656690A (en) * 1969-03-22 1972-04-18 Ilseder Huette Railbed

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3907200A (en) * 1972-10-24 1975-09-23 Regie Autonome Transports Track and method of laying track on a concrete road bed
US4084381A (en) * 1977-01-19 1978-04-18 Woodbine Corporation Stabilization of earth subsurface layers
US4406403A (en) * 1979-01-23 1983-09-27 True Temper Corporation Method of providing a containment reservoir
US4679731A (en) * 1982-10-06 1987-07-14 Akzo Nv Railway track structure and a method of building such structure and bags filled with ballast material
US5163614A (en) * 1988-06-03 1992-11-17 Beton-Es Vasbetonipari Muvek Railway roadbeds with rail slabs, and method for preparing
EP0409356A1 (en) * 1989-07-21 1991-01-23 Voorbij Groep B.V. Process for laying a foundation, and foundation
US5487501A (en) * 1991-07-09 1996-01-30 Clouth Gummiwerke Aktiengesellschaft Shock absorber component for railway track having pourous rubber particle core enclosed by cover layer
US6502760B2 (en) * 1998-06-09 2003-01-07 Coventry University Rail support
US20030052182A1 (en) * 2001-09-18 2003-03-20 Bojji Rajaram Self stabilizing track system
US6672515B2 (en) * 2001-09-18 2004-01-06 Konkan Railwary Corporation Ltd. Self stabilizing track system
DE10218309B4 (de) * 2002-04-24 2007-01-25 Dyckerhoff Ag Fahrweg für Schienenfahrzeuge mit einem Schotterbett für Gleise, Verfahren zu seiner Herstellung und eine Bindemittelmischung zur Verwendung in dem Verfahren
US20060124760A1 (en) * 2002-10-01 2006-06-15 Wolfgang Markus Fixed track for rail vehicles and method for production thereof
US7641127B2 (en) * 2002-10-01 2010-01-05 Hain, Uwe & Hain, Silke Making fixed railway track
US20090121035A1 (en) * 2005-11-15 2009-05-14 Martin Kowalski Fixed carriageway for rail vehicles
US20100276503A1 (en) * 2005-11-15 2010-11-04 Rail.One Gmbh Fixed carriageway for rail vehicles
US20130140373A1 (en) * 2010-04-21 2013-06-06 Bayer Intellectual Property Gmbh Polyurethane ballast layer, the method for preparing the same and the use thereof
US8876014B2 (en) * 2010-04-21 2014-11-04 Bayer Materialscience Ag Polyurethane ballast layer, the method for preparing the same and the use thereof
US20140161526A1 (en) * 2011-03-24 2014-06-12 Bayer Intellectual Property Gmbh Process for the production of ballast
US9297121B2 (en) * 2011-03-24 2016-03-29 Covestro Deutschland Ag Process for the production of ballast
CN107237220A (zh) * 2016-03-28 2017-10-10 北京知易普道技术有限责任公司 可填料式位移调整补偿装置
CN107237220B (zh) * 2016-03-28 2019-11-29 北京知易普道技术有限责任公司 可填料式位移调整补偿装置

Also Published As

Publication number Publication date
DE2039033B2 (de) 1974-05-16
GB1361791A (en) 1974-07-30
BE771067A (fr) 1971-12-16
DE2039033A1 (de) 1972-02-17
FR2104055A5 (enExample) 1972-04-14

Similar Documents

Publication Publication Date Title
US3756507A (en) Railroad track bed
US3656690A (en) Railbed
US3289941A (en) Railway track without ballast
GB1447164A (en) Sound-insulating wall made of composite rubber materials
GB1423775A (en) Railway tracks
US4905896A (en) Railroad roadway for high speed rail-mounted vehicles
HU910311D0 (en) Railway structure and underground structure for railroad vehicles
AU3103301A (en) Soil reinforcement method and apparatus
JP3520294B2 (ja) 枕木軌道の築造方法
GB1448624A (en) Method of and apparatus for forming rail-road level corssing
US2750118A (en) Track and road bed construction
CA1248072A (en) Railway track structure, and a method of building such structure and bags filled with ballast material
HU216185B (hu) Zúzottkőágyazat-mentes felépítmény sínpályákhoz
JP2008285822A (ja) 路面軌道の輪縁路構造とその据付方法
EP0211461A1 (en) Railway, in which rails find support via elastic supporting layers against rigid supporting surfaces, and method for laying such a railway
DE4411833A1 (de) Schallgedämpftes Straßenbahngleis
US4494694A (en) Support system for a railroad track
JPH03137303A (ja) 枠形スラブ軌道の構築方法
ES2230444T3 (es) Sistema de aislamiento vibratorio para vias.
JP3361254B2 (ja) 有道床軌道構造、及び有道床軌道の防振方法
EP1608812A2 (en) Civil engineering support structures
KR102769928B1 (ko) 대입경 암성토에 주입되는 공극채움재를 이용한 성토노반 구조물 및 그 시공방법
JPH01271501A (ja) スラブ軌道の築造方法
JPH0316881Y2 (enExample)
JPH083901A (ja) 軌道構造におけるレベル調整工法