EP0574673A2 - Procédé et dispositif pour la construction de la superstructure d'une voie sans ballast - Google Patents

Procédé et dispositif pour la construction de la superstructure d'une voie sans ballast Download PDF

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Publication number
EP0574673A2
EP0574673A2 EP93106535A EP93106535A EP0574673A2 EP 0574673 A2 EP0574673 A2 EP 0574673A2 EP 93106535 A EP93106535 A EP 93106535A EP 93106535 A EP93106535 A EP 93106535A EP 0574673 A2 EP0574673 A2 EP 0574673A2
Authority
EP
European Patent Office
Prior art keywords
platforms
slab
concrete
railroad
superstructure
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.)
Withdrawn
Application number
EP93106535A
Other languages
German (de)
English (en)
Other versions
EP0574673A3 (en
Inventor
Pietro Tognoli
Giancarlo Bono
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.)
Ipa SpA - Industria Prefabbricati Affini
Original Assignee
Ipa SpA - Industria Prefabbricati Affini
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
Application filed by Ipa SpA - Industria Prefabbricati Affini filed Critical Ipa SpA - Industria Prefabbricati Affini
Publication of EP0574673A2 publication Critical patent/EP0574673A2/fr
Publication of EP0574673A3 publication Critical patent/EP0574673A3/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
    • E01B29/005—Making of concrete parts of the track in situ
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/06—Height or lateral adjustment means or positioning means for slabs, sleepers or rails
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/09—Ballastless systems
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/13—Dowels for slabs, sleepers or rail-fixings

Definitions

  • the present invention relates to a process for laying a railroad-subway superstructure without ballast and to an apparatus for building said superstructure.
  • the main elements which constitute the railroad without ballast are as follows.
  • Prestressed reinforced concrete platforms which have the purpose of transferring the loads transmitted by the rail to the foundation, and then to the ground, so as to provide a sufficiently elastic stable support for the rails.
  • the foundation made of a concrete slab, which provides a monolithic and sufficiently rigid uniform support for the prefabricated platforms.
  • the technical aim of the present invention is to provide a process for laying a railroad-subway superstructure without ballast and an apparatus for building said superstructure which allow to build tracks having high technical characteristics, including for example high route stability, both vertically and horizontally, even with a static load of 25 tons per axle traveling at a speed close to 250 kilometers per hour.
  • an important object of the invention is to provide a process for laying a railroad-subway superstructure without ballast, and an apparatus for building said superstructure which allow reduced maintenance interventions which can be reduced to simple shimmings of the coupling elements.
  • Another object of the invention is to provide a process and an apparatus which allow to obtain high elasticity of the entire system in order to effectively reduce both noise and transmitted vibrations.
  • Not least object of the invention is to provide a process and an apparatus according to the invention which allow to obtain a reduced deterioration of the railroad, which is designed for a commercial life of 50 years, except for the rails and the replaceable parts of the coupling elements.
  • a process for laying a railroad-subway superstructure without ballast characterized in that it consists in: producing on site, according to the datum points of the planned alignment, a foundation slab made of cast-in-place reinforced concrete, provided with retention means for the support and retention of a plurality of rail-supporting platforms; arranging, on said slab, topographic datum plates having known X,Y and Z coordinates; manufacturing and storing in the factory said platforms made of biaxially prestressed reinforced concrete, with the dimensions defined by said planned alignment and by the anchoring point, if any, of the rails on said platforms according to the curved portions and to the gauge changes of said alignment; resting said platforms on said slab, arranging them geometrically in space at a preset distance from said slab by virtue of means for adjusting their inclination; pre-fitting on said platforms said rails which define the track; determining points R on said rails, at said topographic plates, by measuring their planimetric and altitude coordinates 1X, 1Y and
  • the railroad-subway superstructure without ballast is produced by means of an apparatus, which is also the subject of the present invention, which is characterized in that it comprises means for forming a preset amount of concrete; means for casting said concrete into forms in order to produce a plurality of platforms to allow, on said platforms, a longitudinal prestressing by means of strands of stabilized piano-wire steel, means being furthermore provided for the transverse prestressing of said platforms and their advancement for the sequential execution, on said platforms, of completion and checkout operations, as well as means for storing said platforms.
  • the plan of the reference route provided by the employer is examined.
  • planimetric and altitude measurement of the infrastructural elements affected by the route is then performed.
  • the retention means 50 for supporting and retaining a plurality of platforms are also produced in said slab; the rails will subsequently be connected to said platforms.
  • Topographic datum plates 51 are furthermore arranged on the slab.
  • the platforms made of reinforced concrete which is prestressed biaxially, i.e. longitudinally and transversely, are manufactured and stored in the factory.
  • the individual platforms are manufactured so as to allow to build the railroad route within the prescribed tolerances.
  • each platform is built according to the dimensions defined by the planned alignment and according to any movement of the individual rail fixing points within the platforms themselves, so as to provide curved portions and gauge variations where required.
  • the platforms are subsequently rested on the slab using mechanized equipment which removes them from the railroad cars which have reached the laying area by means of an auxiliary track or from wheeled vehicles which travel on adjacent roads.
  • the platforms are rested on the slab, spacing them from said slab by approximately 50 millimeters by virtue of means for adjusting their inclination and particularly by means of four adjustment screws 52 which are arranged perimetrically on each platform.
  • the rails which define the track are pre-assembled on the platforms which rest on the slab and, after measuring the planimetric and altitude coordinates 1X, 1Y and 1Z of the points R of the internal wing of the head of the rail which is closest to the related topographic plate, the coordinates X, Y and Z of the topographic plates are compared with the coordinates 1X, 1Y and 1Z of the points R of the rails and with the planned coordinates 2X, 2Y and 2Z of the points R.
  • the topographic plates are arranged on the slab proximate to its retention means and particularly at the ends of each platform.
  • said platforms prior to the injection of the cement-asphalt mix between the slab and the platforms, said platforms are longitudinally provided with formwork in order to prevent any leakage of mortar and allow, by virtue of the particular structure of the forms, which have vertical grooves, the escape of air through said forms and thus also be able to check the level of the cement-asphalt mix introduced.
  • platform type sorting structures are provided; said platforms are furthermore stored vertically in a preset position according to the sequence of removal and laying depending on their planimetric dimensions, on their rail fixing points and on the gauge variation, if any, depending on the morphological structure of the route to be built.
  • the dimensions of the passive and active frames are set so as to keep the tension levels within the maximum levels allowed for the intended design loads of the railroad superstructure without ballast.
  • the elastic devices for the anchoring of the rails and for the resting of the platforms are given such dimensions as to provide the most suitable dynamic characteristics in order to minimize vibrational and noise pollution generated by railroad traffic.
  • the apparatus for building the railroad-subway superstructure without ballast is also a subject of the present invention.
  • the apparatus and the equipment for building the platforms comprise means for forming a preset amount of concrete, defined by a concrete-mixing apparatus 2 having high production capacity which is provided with two mixers 40 having a horizontal axis and is controlled by an electronic computer 41.
  • the apparatus is capable of providing indications related to the humidity of the aggregates and to the consistency of the mix, whereas an alphanumeric printer 42 records the doses of each mix and daily consumptions.
  • the apparatus furthermore has means for casting the concrete in forms which comprise a casting line 3 constituted by a plurality of mutually aligned and independent forms and by a tensioning head 5 and an anchoring head 6.
  • the casting line is considerably long, in order to allow longitudinal prestressing, by means of strands of stabilized piano-wire steel, applied to the platforms 7 manufactured by means of the forms 4, by virtue of the possibility of allowing the individual forms to perform free longitudinal relative movements by means of low-friction supports.
  • the initial repositioning of the forms 4 is then obtained by using hydraulic jacks 8.
  • the apparatus furthermore has means 10 for performing the transverse prestressing of the platforms and their subsequent advancement in order to perform sequentially, on said platforms, the further completion and checkout operations, after the completion of which the platforms undergo a storage operation by virtue of storage means.
  • the casting line 3 comprises means 20 for adjusting the lengths and positions of the regions suitable to receive the coupling elements of the rails and of the screws for their adjustment on the platforms.
  • means 23 for the mechanical packing of the concrete casting which comprise for example sliding compressed-air vibrators, and means 24 for the curing of the concrete casting, defined by an insulated awning which allows the start of the nocturnal curing cycle with low-pressure vapors and at a maximum temperature of 55 degrees.
  • the platforms are subjected to the loosening of the strands with the aid of relaxation pistons and to the separation of said strands by cutting.
  • the apparatus furthermore provides a preparation lane 25 which is essentially constituted by a double supporting roller set which is used as platform advancement line; fixed treatment stations 26 are arranged to the sides of said line and allow to sequentially perform the operations for completing and checking the platforms.
  • a preparation lane 25 which is essentially constituted by a double supporting roller set which is used as platform advancement line; fixed treatment stations 26 are arranged to the sides of said line and allow to sequentially perform the operations for completing and checking the platforms.
  • the preparation lane in fact comprises, as already mentioned above, means 10 for performing transverse prestressing of the platforms and means 27 for connecting the coupling elements on the platforms in the preset positions prescribed by the design specifications.
  • the preparation lane furthermore comprises a device 28 for the automatic positioning and locking of the platforms in order to provide the prescribed gauge of the shoulders 29 of the platforms, their alignment in case of platforms for straight track or the relative movement of the shoulders 29 in case of platforms for curved track, according to the planned route.
  • the apparatus provides means 30 for storing the platforms, which are suitable to remove them from the preparation lane and deposit them, in a vertical position, numbered according to the railroad plan, in a prearranged manner within racks 31 arranged in organized yards for the completion of the setting of the platforms and to allow the immediate identification and removal thereof according to the plan of the railroad-subway route.
  • the sequence of the loading of the platforms on the means of transport directed to the laying site, whether a railroad car or other vehicle, occurs according to the sequence in which the platforms are unloaded from the means of transport onto the slab according to the planned alignment.
  • the invention achieves the intended aim and objects and achieves important and numerous advantages.
  • the prestressed reinforced-concrete platforms are built and laid sequentially and in a preset manner as a function of the planned alignment datum points by virtue of their prior type-sorting, in order to allow economy and high productivity of the cycle for their production, storage and laying.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Processing Of Solid Wastes (AREA)
  • Railway Tracks (AREA)
EP19930106535 1992-06-19 1993-04-22 Process for laying a railroad-subway superstructure without ballast and apparatus for producing said superstructure Withdrawn EP0574673A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI921516 1992-06-19
ITMI921516A IT1255151B (it) 1992-06-19 1992-06-19 Procedimento per la posa in opera di un armamento ferroviario- metropolitano senza massicciata ed un impianto per la realizzazione di detto armamento

Publications (2)

Publication Number Publication Date
EP0574673A2 true EP0574673A2 (fr) 1993-12-22
EP0574673A3 EP0574673A3 (en) 1994-05-25

Family

ID=11363547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930106535 Withdrawn EP0574673A3 (en) 1992-06-19 1993-04-22 Process for laying a railroad-subway superstructure without ballast and apparatus for producing said superstructure

Country Status (2)

Country Link
EP (1) EP0574673A3 (fr)
IT (1) IT1255151B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0698686A1 (fr) * 1994-08-12 1996-02-28 Heilit & Woerner Bau-AG Voie de chemin de fer sur une dalle porteuse continue et procédé pour situer la voie de chemin de fer sur une dalle porteuse continue
WO1998041689A1 (fr) * 1997-03-14 1998-09-24 Alfred Baron Dispositif pour dalle continue surelevee
EP1039031A1 (fr) * 1999-03-19 2000-09-27 GSG Knape Gleissanierung GmbH Méthode de réalisation d'une voie ferrée

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361351A (en) * 1966-01-21 1968-01-02 Railroad Permanent Way Product Reinforced railroad track structure
FR2152604B1 (fr) * 1972-09-01 1974-08-19 Saret
OA06092A (fr) * 1978-03-30 1981-06-30 Saret Perfectionnements à un procédé et une installation de fabrication d'éléments en béton armé, notamment en béton précontraint.
IT1176498B (it) * 1984-07-27 1987-08-18 I P A Ind Prefabbricati Affini Componenti per linee ferroviarie su piastre prefabbricate in cemento armato,senza massicciata
DE3532766A1 (de) * 1985-09-13 1987-03-19 Zueblin Ag Verfahren zur herstellung eines fuer einen schnellen und wirtschaftlichen rueckbau geeigneten schotterlosen gleisoberbau
IT1206781B (it) * 1987-04-29 1989-05-03 Scac Spa Impianto per la fabbricazione di manufatti lineari in cemento armato precompresso.
AT390976B (de) * 1988-12-19 1990-07-25 Porr Allg Bauges Verfahren zur errichtung von schotterlosem oberbau sowie ein nach diesem verfahren hergestellter oberbau

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0698686A1 (fr) * 1994-08-12 1996-02-28 Heilit & Woerner Bau-AG Voie de chemin de fer sur une dalle porteuse continue et procédé pour situer la voie de chemin de fer sur une dalle porteuse continue
WO1998041689A1 (fr) * 1997-03-14 1998-09-24 Alfred Baron Dispositif pour dalle continue surelevee
EP1039031A1 (fr) * 1999-03-19 2000-09-27 GSG Knape Gleissanierung GmbH Méthode de réalisation d'une voie ferrée

Also Published As

Publication number Publication date
ITMI921516A1 (it) 1993-12-19
EP0574673A3 (en) 1994-05-25
IT1255151B (it) 1995-10-20
ITMI921516A0 (it) 1992-06-19

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