EP0590225A1 - Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial - Google Patents

Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial Download PDF

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Publication number
EP0590225A1
EP0590225A1 EP92870159A EP92870159A EP0590225A1 EP 0590225 A1 EP0590225 A1 EP 0590225A1 EP 92870159 A EP92870159 A EP 92870159A EP 92870159 A EP92870159 A EP 92870159A EP 0590225 A1 EP0590225 A1 EP 0590225A1
Authority
EP
European Patent Office
Prior art keywords
track
ballast
track according
railway track
layer
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Withdrawn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
EP92870159A
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English (en)
French (fr)
Inventor
Edward Oledzki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP92870159A priority Critical patent/EP0590225A1/de
Publication of EP0590225A1 publication Critical patent/EP0590225A1/de
Withdrawn legal-status Critical Current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
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/62—Rail fastenings incorporating resilient supports
    • 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
    • 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
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/01—Elastic layers other than rail-pads, e.g. sleeper-shoes, bituconcrete

Definitions

  • the present invention relates to the railway and relates to its superstructure.
  • the railroad in its classic form dates back about one hundred and fifty years, that is to say from the beginnings of the railways.
  • the dynamic behavior of the track and the stresses exerted on its various elements are determined, on the one hand, by the characteristics of the vehicles and, on the other hand, by the vertical rigidity of the track and its mass.
  • the conventional track corresponds well to the needs of modern traffic, although certain frequencies of vibrations are poorly absorbed in the case of high speed lines.
  • the geometry of the conventional track is directly sensitive to all deformations of the platform and the ballast, especially to local deformations of the ballast.
  • the only element of continuity, which is likely to distribute the effects of these deformations, is the rail.
  • the rail stiffness is not sufficient and the deformations of the platform and the ballast cause the geometry of the track to deteriorate.
  • the elimination of the ballast makes it possible to avoid all the disadvantages of its bad behavior and especially its instability.
  • the application of a continuous slab makes it possible to distribute the stresses or pressures on the platform so as to reduce the maximum values of the pressures, reduce the tangential deformations in the movable medium of the platform and reduce the number of cycles, thanks to the more uniform load distribution.
  • the elastic deformability of the track is, in the case of different solutions tested, ensured by the rail attachments and by the deformations of the platform.
  • the deformability of the platform is reduced by the reduction of the pressures exerted on this platform and by the high rigidity of the reinforced concrete slab. So that the track is not too rigid, so that the rail support coefficient is not excessively high, it is necessary to introduce an additional elastic element into the superstructure.
  • the loss of the elasticity of the ballast and the reduction in the deformability of the platform are balanced or compensated by the system of elastic soles in the rail fastenings.
  • One of the major drawbacks of this system is the high cost of the fasteners.
  • Construction of the railway according to the invention constitutes a continuous element along the length of the track, composed of at least two superimposed layers of solid materials, the elastic modulus of which is different for each layer, due to the heterogeneity of the different matrices applied.
  • the lower layer 4 is an elastic layer, the modulus of elasticity of which in compression does not exceed 250 N / mm2. It is carried out on the basis of the ductile matrix, which allows it to follow the deformations and to adapt to possible defects of the platform 5, without causing significant internal forces and above all without risking the internal rupture of the layer.
  • the elastic layer 4 made for example of pre-stabilized ballast, constitutes the support for the other layers 3 and elements of the track superstructure. Its thickness is chosen according to the modulus of elasticity, so as to ensure the value of the reaction coefficient c less than 100 kg / cm3. This thickness is not less than 5 cm and in principle does not exceed 15 cm.
  • this pre-stabilized ballast layer 4 While being a ductile material, this pre-stabilized ballast layer 4 remains a solid body and, given the continuity of its structure, is characterized by a certain rigidity in bending, which allows it to attenuate, if not eliminate, the effects accidental local damage in platform 5, due for example to lack of drainage.
  • the other or the other layers 3 of the track construction are made of a composite material with a fragile matrix - such as concrete with hydraulic binder or concrete with the addition of fly ash.
  • a fragile matrix - such as concrete with hydraulic binder or concrete with the addition of fly ash.
  • This discontinuous reinforcement reduces the fragility of the matrix.
  • the reinforcement of the distribution layer 3 by the incorporation of the discontinuous reinforcement makes this layer more resistant, which makes it possible to reduce its dimensions compared to the reinforced and prestressed concrete slabs, which contributes to the elasticity of said layer. and reducing the vertical stiffness coefficient of the track.
  • One of the important elements of the construction of the railroad track according to the invention is the introduction of the discontinuous reinforcement in all the parts of the continuous construction.
  • This reinforcement contributes to the ductility of the materials and increases the local tensile strength of these materials. It also improves the absorption of frequencies and prevents the propagation of vibrations in the structure.
  • the discontinuous reinforcement consists of elements of metallic, organic or mineral in nature.
  • the slenderness of the elements of the discontinuous reinforcement that is to say the ratio of the smallest dimension of the cross section to the length, is greater than 30.
  • the length of the elements does not exceed two more diameters large aggregates.
  • the upper distribution layer is also reinforced, in the most heavily loaded parts, by the classic continuous reinforcement, which takes up the bending moments due to traffic.
  • the continuous upper distribution layer 3 can be replaced by a discrete structure, which would facilitate work aimed at raising the track .
  • the composition of the pre-stabilized ballast 4 will be adapted to increase the ductility of the elastic layer, and a thin lower layer of 5 cm with matrix based on hydraulic binder will be applied.
  • the heterogeneity of the superimposed layers constituting the structure of the track according to the invention makes it possible to combine the advantages of the conventional ballasted track such as the elasticity of the track and its dynamic behavior, and to add those of the non-track conventional non-ballasted and in particular the stability of the track geometry and the reduction of maintenance costs.
  • the two layers are reinforced with the discontinuous metallic reinforcement but of different cross section for each layer.
  • the dimensions of the cross section of the distribution layer is 0.14 mx 2.40 m.
  • the elastic lower layer has a thickness of 10 cm and its modulus of elasticity in compression is 50 N / mm2.
  • the overall reaction coefficient c for the elastic layer and the platform) is 23 kg / cm3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Railway Tracks (AREA)
EP92870159A 1992-09-30 1992-09-30 Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial Withdrawn EP0590225A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP92870159A EP0590225A1 (de) 1992-09-30 1992-09-30 Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92870159A EP0590225A1 (de) 1992-09-30 1992-09-30 Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial

Publications (1)

Publication Number Publication Date
EP0590225A1 true EP0590225A1 (de) 1994-04-06

Family

ID=8212274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92870159A Withdrawn EP0590225A1 (de) 1992-09-30 1992-09-30 Eisenbahnlagerung mit mehreren heterogenen Schichten aus Kompositmaterial

Country Status (1)

Country Link
EP (1) EP0590225A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1008607A3 (fr) * 1994-08-26 1996-06-04 Oledzki Edward Etouffeur de vibrations pour une voie ferree ou autre construction destinee a supporter un trafic.
CN102561114A (zh) * 2010-12-16 2012-07-11 拜耳材料科技(中国)有限公司 一种聚氨酯铁路道床、及其制备方法和应用
CN104911961A (zh) * 2015-06-09 2015-09-16 含山县朝霞铸造有限公司 一种轨道垫板连接结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383043A (en) * 1967-01-03 1968-05-14 Robert M. Tew Railroad track structure
NL7701846A (en) * 1977-02-21 1977-06-30 James Walker & Co Nederland N Elastically:supported railway track - has supporting layers of cast hardened resin adhering to rails and rigid supports
EP0211461A1 (de) * 1985-07-31 1987-02-25 Edilon B.V. Eisenbahn mit Schienen welche sich abstützen über elastische Stützschichten gegen steife Stützflächen und Verfahren zum Anlegen einer solchen Eisenbahn
EP0219811A1 (de) * 1985-10-17 1987-04-29 Diether Dipl.-Ing. Uderstädt Schienenunterbau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3383043A (en) * 1967-01-03 1968-05-14 Robert M. Tew Railroad track structure
NL7701846A (en) * 1977-02-21 1977-06-30 James Walker & Co Nederland N Elastically:supported railway track - has supporting layers of cast hardened resin adhering to rails and rigid supports
EP0211461A1 (de) * 1985-07-31 1987-02-25 Edilon B.V. Eisenbahn mit Schienen welche sich abstützen über elastische Stützschichten gegen steife Stützflächen und Verfahren zum Anlegen einer solchen Eisenbahn
EP0219811A1 (de) * 1985-10-17 1987-04-29 Diether Dipl.-Ing. Uderstädt Schienenunterbau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TRAVAUX no. 558, Septembre 1981, PARIS pages 49 - 60 COLNAT 'PROBLEMES DE BRUITS ET VIBRATIONS DUS AUX TRANSPORTS FERROVIAIRES..' *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1008607A3 (fr) * 1994-08-26 1996-06-04 Oledzki Edward Etouffeur de vibrations pour une voie ferree ou autre construction destinee a supporter un trafic.
CN102561114A (zh) * 2010-12-16 2012-07-11 拜耳材料科技(中国)有限公司 一种聚氨酯铁路道床、及其制备方法和应用
CN102561114B (zh) * 2010-12-16 2015-08-26 拜耳材料科技(中国)有限公司 一种聚氨酯铁路道床、及其制备方法和应用
CN104911961A (zh) * 2015-06-09 2015-09-16 含山县朝霞铸造有限公司 一种轨道垫板连接结构

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