US3790078A - Vibrator damping of vehicle path - Google Patents

Vibrator damping of vehicle path Download PDF

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Publication number
US3790078A
US3790078A US00146777A US3790078DA US3790078A US 3790078 A US3790078 A US 3790078A US 00146777 A US00146777 A US 00146777A US 3790078D A US3790078D A US 3790078DA US 3790078 A US3790078 A US 3790078A
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US
United States
Prior art keywords
bottom plate
track
damping
upper plate
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.)
Expired - Lifetime
Application number
US00146777A
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English (en)
Inventor
G Hagbjer
K Spang
Bo Malte Egerbork
G Gadefelt
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Akustikbyran AB
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Akustikbyran AB
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 Akustikbyran AB filed Critical Akustikbyran AB
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Publication of US3790078A publication Critical patent/US3790078A/en
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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
    • 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
    • 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
    • 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
    • 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
    • E01B2204/12—Floating rails or sleepers

Definitions

  • the apparatus comprises a bottom plate which extends in the longitudinal direction of the track and which is supported by an elastic support means. At least one upper plate is disposed on the bottom plate, with a damping layer interposed between the bottom plate and the upper plate. A further means is provided for inhibiting relative lateral movement between the bottom plate and the upper plate.
  • the damping layer may comprise a layer of viscoelastic material which is very thin relative to the thickness of the plates.
  • the present invention relates to a device in path for motor vehicles for damping of vibrations arising from traffic and for preventing the transmission of these vibrations to the ground and environment of the path.
  • a problem that is noticed more and more in the society of today is the disturbing noise arising from traffic with various means of conveyance. This applies particularly to rail vehicles and above all to subway trains which, as a rule, are driven in tunnels below the ground on which the dwelling-houses rest and through which vibrations from the traffic are transmitted to the buildings to cause inconvenience there in the form of noise. Such inconvenience is frequently caused, also by vehicles being driven on strongly vibrating concrete constructions, bridges etc., in direct connection with dwelling-houses.
  • FIG. 1 shows a section through a part of a path for rail vehicles and FIG. 2 shows a detail of the same.
  • the reference character designates the bedrock and 2 a concrete smoothing layer on which a preferablycontinuous bottom plate 3 of concrete extending in the longitudinal direction of the path is adapted.
  • isolator arrangements 4 of preferably viscoelastic material such as rubber are placed.
  • support constructions S' are mounted in the smoothing layer 2 at suitable distance in the longitudinal direction of the path, between which and the plate 3 elastic support means 6 are arranged intended for taking up lateral forces, above all in curves on the path.
  • the profile of the bottom plate 3 is substantially U-shaped with relatively short U-legs 7. Between these a central upper plate 8 of concrete is adapted, whose centre linesubstantially coincides with that of the plate 3, and on each side thereof with some interspace to the central plate 8 and the U-legs 7 there is a concrete body 9.
  • the upper central plate 8 and the concrete bodies 9 have substantially the same extension in longitudinal direction as the bottom plate 3.
  • a thin layer of a so-called absorbate (a damping mass) 10 is adapted, i. e., a viscoelasticrnaterial, which for instance may be arranged as an aggregate of two plates and an intermediate layer of a viscoelastic material.
  • a viscoelasticrnaterial which for instance may be arranged as an aggregate of two plates and an intermediate layer of a viscoelastic material.
  • this layer which is also called shearing layer
  • the great energy absorbing ability of the material i.e., damping ability
  • absorbates 11 are adapted in a corresponding manner.
  • an elastic material is inserted, for instance in the form of corrugated rubber sheet 12.
  • the centre plate 8 as well as the concrete bodies 9 thus rest freely on the bottom plate 3 and between its legs 7 and are separated by said so-called absorbates 10, 11 and the rubber sheets 12 provided with ridges.
  • rails 13 are adapted in a suitable manner, on which wheels 13 and a shaft 15 of a rail vehicle are shown.
  • a current rail 16 with safety means 17 is also arranged in a suitable manner at one longitudinal side of the bottom plate.
  • the resulting vibrations are transmitted to the upper plate 8 on which the rails rest.
  • the rails can also be replaced with sliding paths, air cushion rails an d the like for other types of vehicles.
  • the device functions in such a way that the bending waves spreading from a vehicle in horizontal and vertical direction in the plate 8 are strongly damped by the presence of the shearing layers 10 and 11.
  • the shearing layers will reach their full effect only by the presence of the supporting bottom plate 3 and of the unloaded passive bodies 9.
  • the strong damping in the shearing layers cause the development of internal natural vibrations in the elastically arranged path 3, 8, 9 to be greatly reduced. This is a prerequisite in order that the vibration isolation by means of the isolators 4 should act effectively and that the direct air-sound radiation from the path should be kept at a low level.
  • the rubber layers 12 are provided to disconnect the bodies 9 from the motion of the bottom plate 3 and the upper plate 8.
  • the plate 8 is longitudinally divided into smaller blocks, which then preferably are connected with suitable means preventing relative motion in the longitudinal direction of the path.
  • the device of the invention can of course be used for other parts of the path than tunnels.
  • it is for instance very-advantageous at bridges, which, as is wellknown, heavily intensify traffic vibrations and radiate disturbing noise through the air.
  • the bottom plate 3 can advantageously form the supporting element of the bridge.
  • Track supporting apparatus for vehicles for damping vibrations arising as a result of vehicle movement on the track and for substantially preventing transmission of such vibrations to the ground and to the surroundings of the track comprising,
  • said damping layer including a layer of viscoelasticv material which layer is very thin relative to the thickness of the plates, whereby shear stresses are developed in said visoelastic material when relative lateral movement takes place between the upper and bottom plates and when they oscillate in bending modes.
  • a body for damping substantially horizontal vibrations is disposed on said bottom plate at each side 4.
  • said elastic support means for said bottom plate comprises a plurality of rubber elements.
  • damping layer comprises a viscoelastic material disposed between two metal plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Vibration Prevention Devices (AREA)
  • Road Paving Structures (AREA)
US00146777A 1970-05-28 1971-05-25 Vibrator damping of vehicle path Expired - Lifetime US3790078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE07356/70A SE341014B (enrdf_load_stackoverflow) 1970-05-28 1970-05-28

Publications (1)

Publication Number Publication Date
US3790078A true US3790078A (en) 1974-02-05

Family

ID=20271137

Family Applications (1)

Application Number Title Priority Date Filing Date
US00146777A Expired - Lifetime US3790078A (en) 1970-05-28 1971-05-25 Vibrator damping of vehicle path

Country Status (6)

Country Link
US (1) US3790078A (enrdf_load_stackoverflow)
JP (1) JPS548925B1 (enrdf_load_stackoverflow)
DE (1) DE2126158C3 (enrdf_load_stackoverflow)
FR (1) FR2093805A5 (enrdf_load_stackoverflow)
GB (1) GB1337639A (enrdf_load_stackoverflow)
SE (1) SE341014B (enrdf_load_stackoverflow)

Cited By (10)

* 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
US4232822A (en) * 1976-12-28 1980-11-11 Ed. Zublin Aktiengesellschaft Method of and arrangement for correcting the height of railway upper structures
US4262845A (en) * 1978-03-30 1981-04-21 British Railways Board Concrete slab structure for railway track
US4338758A (en) * 1978-04-18 1982-07-13 Reduc Acoustics Ab Vibration damped structures and objects
US4356968A (en) * 1980-10-10 1982-11-02 Stedef S.A. Railroad tie cover
US4489884A (en) * 1980-10-10 1984-12-25 Stedef S.A. Railroad tie cover
US4609144A (en) * 1984-04-27 1986-09-02 Stedef S.A. Railroad tie cover
US4616395A (en) * 1983-06-30 1986-10-14 Perini Corporation Railroad track fixation method and apparatus
US20100242786A1 (en) * 2006-05-26 2010-09-30 Max Bogl Bauunternehmung Gmbh & Co. Kg Guideway
CN113818291A (zh) * 2021-10-22 2021-12-21 株洲时代新材料科技股份有限公司 一种无砟轨道钢轨减振装置

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610727A1 (de) * 1976-03-13 1977-09-22 Hermann Salomon Koerperschalldaemmende gleisbettung
DE2901283A1 (de) * 1979-01-13 1980-07-24 Erich Radler Schotterloser oberbau fuer schienengebundene fahrzeuge
DE2941492A1 (de) * 1979-10-11 1981-06-19 Alfred Dipl.-Ing. 8700 Würzburg Reichart Horizontale elastische abstuetzung der gleis- und weichenkonstruktion
PL138056B1 (en) * 1982-06-19 1986-08-30 Politechnika Warszawska Railway track
DE3315697A1 (de) * 1983-04-29 1984-11-08 Klöckner-Werke AG, 4100 Duisburg Schallminderndes gleiselement
DE3443081A1 (de) * 1984-11-27 1986-05-28 Phoenix Ag, 2100 Hamburg Elastisches schienenlager
DE3663274D1 (en) * 1985-12-16 1989-06-15 Joseph Grunenwaldt Method and device for resiliently fastening railway rails
HU207756B (en) * 1988-06-03 1993-05-28 Beton Es Vasbetonipari Muevek Arrangement for forming large-panel railroad permanent ways
WO1995020069A1 (de) * 1994-01-24 1995-07-27 Hermann Ortwein Unterbau für ein gleis für schienenfahrzeuge
AT410329B (de) * 1999-03-19 2003-03-25 Porr Allg Bauges Schotterloser oberbau
DE10107827C5 (de) * 2001-02-16 2011-09-15 Max Bögl Bauunternehmung GmbH & Co. KG Verfahren zur Herstellung und zur Lagerung eines Betonbauteiles für eine Feste Fahrbahn eines schienengeführten Fahrzeuges sowie deren Lagerung

Cited By (10)

* 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
US4232822A (en) * 1976-12-28 1980-11-11 Ed. Zublin Aktiengesellschaft Method of and arrangement for correcting the height of railway upper structures
US4262845A (en) * 1978-03-30 1981-04-21 British Railways Board Concrete slab structure for railway track
US4338758A (en) * 1978-04-18 1982-07-13 Reduc Acoustics Ab Vibration damped structures and objects
US4356968A (en) * 1980-10-10 1982-11-02 Stedef S.A. Railroad tie cover
US4489884A (en) * 1980-10-10 1984-12-25 Stedef S.A. Railroad tie cover
US4616395A (en) * 1983-06-30 1986-10-14 Perini Corporation Railroad track fixation method and apparatus
US4609144A (en) * 1984-04-27 1986-09-02 Stedef S.A. Railroad tie cover
US20100242786A1 (en) * 2006-05-26 2010-09-30 Max Bogl Bauunternehmung Gmbh & Co. Kg Guideway
CN113818291A (zh) * 2021-10-22 2021-12-21 株洲时代新材料科技股份有限公司 一种无砟轨道钢轨减振装置

Also Published As

Publication number Publication date
DE2126158C3 (de) 1979-05-31
DE2126158A1 (de) 1971-12-09
SE341014B (enrdf_load_stackoverflow) 1971-12-13
GB1337639A (en) 1973-11-14
FR2093805A5 (enrdf_load_stackoverflow) 1972-01-28
JPS548925B1 (enrdf_load_stackoverflow) 1979-04-19
DE2126158B2 (de) 1978-09-28

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