US3313486A - Railway track support - Google Patents

Railway track support Download PDF

Info

Publication number
US3313486A
US3313486A US410153A US41015364A US3313486A US 3313486 A US3313486 A US 3313486A US 410153 A US410153 A US 410153A US 41015364 A US41015364 A US 41015364A US 3313486 A US3313486 A US 3313486A
Authority
US
United States
Prior art keywords
block
rail
stay
ties
track
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
US410153A
Other languages
English (en)
Inventor
Sonneville Roger Paul
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
Application granted granted Critical
Publication of US3313486A publication Critical patent/US3313486A/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
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/306—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped plate
    • 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
    • E01B3/36—Composite sleepers
    • 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
    • E01B3/40—Slabs; Blocks; Pot sleepers; Fastening tie-rods to them
    • 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
    • E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
    • E01B9/685—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape
    • E01B9/686—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by their shape with textured surface

Definitions

  • the present invention relates to railway track supports and in particular to concrete track supports.
  • Ties or sleepers of the composite type composed of a steel girder embedded in reinforced concrete at both ends so as to form a support unit under each rail, the girder performing the function of the main reinforcement of each of the concrete blocks and a spacer member so as to maintain the relative inclination of, and appropriate width between, the rails.
  • the most advanced composite tie is that constructed by the applicant and described in the French Patent No. 984,615, filed on Apr. 1, 1949.
  • the steel stay or spacer member which is both fiexible and strong, is not adversely affected by pressure applied on the ballast on the axis of the track, whereas this pressure is usually fatal to ties in one piece, even if they are of the pre-stressed type.
  • the blocks are robust and their dimensions are limited in both length and Width to a moderate value, whereas their thickness is relatively great so that they offer good resistance to the dynamic forces that each rail transmits thereto in the region of their centre; however the total weight of the composite tie remains reasonable owing to the absence of concrete in the central part.
  • the steel of the stay or spacer member embedded in the concrete of the two blocks participates to a great extent in the resistance thereof to bending, shear and fatigue stresses, and it is also employed for anchoring the rail-fixin bolts, as is a metal tie.
  • Concrete longitudinal ties or slabs have the main advantage of distributing over a very large area of ballast the loads transmitted by the rails to each support, since each longitudinal tie or element has at least two supports for the rail. Bending and fatigue stresses in respect of the rail are consequently reduced and the stability of the longitudinal ties under rolling loads is remarkable since the unit pressure under the large-area longitudinal ties is much less than under the smaller blocks of composite ties.
  • the steel spacer member interconnecting the two rails does not participate in the resistance of the longitudinal ties themselves. These ties therefore have a tendency to break longitudinally under the rails. If pre-stressing is employed so .as to increase the dimensions and useful area of the longitudinal ties, it is practically essential for this reason to pre-stress in two directions, namely in the directions both parallel and perpendicular to the rail and this is a costly complication.
  • the track supported by longitudinal ties offers a satisfactory resistance to transverse displacement under the efiect of lateral dynamic forces of the vehicles, the resistance to the longitudinal forces of rail creep or expansion is very low and the track supported by longitudinal ties behaves in the manner of a sledge.
  • the object of the present invention is to provide a new concrete track support which is so designed as to combine the advantages of the aforementioned two types of support while avoiding their drawbacks.
  • the invention provides for this purpose a track support.
  • each block has in plan approximately the shape of an equal-sided quadrilateral, one of the diagonals of said quadrilateral being in the longitudinal plane of symmetry of the stay and the other diagonal being parallel to the longitudinal axis of the rail support surface on the block.
  • the support surface for the rail is much longer than that of composite ties and is somewhat similar to that obrained with the longitudinal ties or slabs, since this length is the length of one of the diagonals of the blocks. Consequently, this support can be named a transverse-longitudinal tie and it will be seen hereinafter that it does indeed combine the advantages of the aforementioned two types of support.
  • each block adjacent the stay or spacer member is advantageously truncated so as to form a face having a width at least equal to that of the stay, the other three corners being radiused or rounded so as to preclude crumbling or spalling of the concrete.
  • the diagonal parallel to the longitudinal axis of the rail support surface on the underlying block can coincide with said axis or be slightly outwardly offset therefrom.
  • each block two support zones for the flange of the rail which are located symmetrically relative to the axis of the spacer member and spaced apart a distance equal to or less than the space between the axes of the ties of a conventional track, namely cm.
  • These support zones can be embodied on the surface of each block by two sole-plates or two elastically yieldable pads fixed to the block in an appropriate manner.
  • the fastening of the rail on each block can be achieved by two pairs of fasteners each pair being placed in one of the support zones. However, it is more advantageous to provide a single pair of fasteners located on the diagonal intersecting the longitudinal plane of symmetry of the stay.
  • the concrete of the blocks is reinforced by reinforcements in the conventional manner.
  • These reinforcements can be pre-stressed or poststressed so as to achieve a pre-stressing of the concrete in the directions of the two diagonals, or at least in the direction of the diagonal which is parallel to the axis of the rail support surface.
  • FIG. 1 is a perspective view of one embodiment of a track support according to the invention.
  • FIG. 2 is a plan view of a railway track laid on the supports shown in FIG. 1.
  • the track support according to the invention comprises two blocks 1 of reinforced concrete which are interconnected by a spacer member or stay 2 of steel which is embedded in the blocks 1 at both ends. If desired, in the part thereof between the blocks, the stay 2 can be covered with concrete.
  • Each block 1 has in plan approximately the shape of an equal-sided quadrilateral ABCD, such as a square or diamond or lozenge (FIG. 2).
  • This quadrilateral is so oriented that one of its diagonals, AC, is located in the longitudinal plane of symmetry of the stay 2 indicated by the line XX in FIG. 2, the other diagonal BD, being parallel to the longitudinal axis of the bearing surface on the blocks of the rail r, namely the rail axis Y-Y.
  • the diagonal BD can coincide with the axis of the rail or, better still, be as shown, slightly outwardly offset relative to this axis.
  • the quadrilateral ABCD has a diamond shape the angles A and C are preferably greater than 90 so as to increase the length of the diagonal CD.
  • the corners A, B and D are rounded whereas at corner C adjacent the stay 2 the block 1 is truncated. This provides a fiat face 3 whose width is at least equal to that of the stay 2.
  • each block 1 Disposed on the upper face of each block 1 are two metal sole-plates or two elastically yieldable pads 4 which are secured in any appropriate manner to this face and embody two bearing means on the block for the rail r.
  • the axis of the bearing means 4 coincides with the axis of the rail r which in turn is coincident with the diagonal BD, or parallel to the latter should the diagonal BD be slightly offset, as mentioned hereinbefore.
  • the 'two support means or zones are symmetrical relative to the diagonal AC, the spacing thereof being of the order of at least 75 cm.
  • rail fasteners a preferably of the doubly elastic type, can be secured by bolts b or other clamping-down means, one pair of fasteners being provided for each support zone and disposed on the transverse axis of this zone.
  • bolts b or other clamping-down means one pair of fasteners being provided for each support zone and disposed on the transverse axis of this zone.
  • the position of the fasteners is determined on each block by the apertures 5 for the passage of the bolts b; these apertures can be formed in any suitable manner when moulding the support.
  • each block there could also be provided on the surface of each block and extending in a direction perpendicular to the diagonal AC, grooves or recesses 6 adapted to receive the end c of the fasteners a which is remote from the rail, or alternatively an inserted element provided with a recess for this end 0.
  • FIG. 2 shows a railway track incorporating a support according to the invention. It can be seen that the blocks 1 of adjacent supports can be placed almost in corner-tocorner relation with their diagonals BD in alignment so as to form an almost continuous support surface for the rail. Notwithstanding the nearness of the supports, the tamping or the shovel-packing of the ballast under each block is easy. This can be effected on the four sides of each block (in the direction of the arrows 1) which are spaced from the sides of the adjacent blocks owing to the very shape and disposition of the blocks.
  • the metal reinforcement afforded by the stay greatly contributes to the prevention of cracks in a direction parallel to the rail. This function is not performed by the independent spacer members of conventional longitudinal ties. Thus the advantage of the composite tie over the longitudinal tie has been retained. In the case where the reinforcement parallel to the rail affords a pre-stressing, the compression of the concrete resulting therefrom exerts along the stay a stress which according to Poissons coefficient, resists the cracking of the concrete in this orthogonal direction.
  • the relative remoteness of the two rail support zones on each block permits considerably increasing the tailingin moment of the rail on the supports, that is, the transverse stiffness of the chassis of the track, and this contributes to the reliability of the welded track, which is subjected to very rapid trafiic, while reducing the maintenance costs of the lining.
  • railway track support comprising in combination two rigid concrete blocks and a steel stay having end portions completely embedded in and interconnecting the blocks, wherein each block has in plan approximately the shape of an equal-sided quadrilateral, one of the diagonals of said quadrilateral being in the longitudinal plane of symmetry of the stay and the other diagonal being perpendicular to said one of the diagonals, two bearing means, symmetrically disposed relative to the longitudinal plane of symmetry of the stay on the upper face of each block for the flange of the corresponding rail, each bearing means having a top face upwardly projecting from the upper face of the block.
  • each of said bearing means comprises a sole-plate fixed to the upper face of each block.
  • each of said bearing means comprises an elastically yieldable pad fixed to the upper face of each block.
  • railway track support comprising in combination two rigid concrete blocks and a steel stay having end portions completely embedded in and interconnecting the blocks, wherein each block has in plan approximately the shape of an equal-sided quadrilateral, one of the diagonals of said quadrilateral being in the longitudinal plane of symmetry of the stay and the other diagonal being perpendicular to said one of the diagonals, two bearing means symmetrically disposed relative to the longitudinal plane of symmetry of the stay on the upper face of each block for the flange of the corresponding rail, each bearing means having a top face upwardly projecting from the upper face of the block, means on the block for placing in position two rail fasteners and clamping-down means for the two fasteners, the fasteners and clamping-down means being assembled with the corresponding block in alignment on that diagonal of the block which is located in the longitudinal plane of symmetry of the stay.
  • a railway track comprising two rails and a plurality of railway track supports, each railway track support comprising in combination two rigid concrete blocks and a steel stay having end portions completely embedded in and interconnecting the blocks, wherein each block has in plan approximately the shape of an equal-sided quadrilateral, one of the diagonals of said quadrilateral being in the longitudinal plane of symmetry of the stay and the other diagonal being perpendicular to said one of the diagonals, two bearing means symmetrically disposed relative to the longitudinal plane of symmetry of the stay on the upper face of each block for the flange of the corresponding rail, each bearing means having a top face upwarly projecting from the upper face of the block, means on the block for placing in position two rail fasteners and clamping-down means for the two fasteners, the fasteners and clamping-down means being assembled with the corresponding block in alignment on that diagonal of the block which is located in the longitudinal plane of symmetry of the stay, planes containing the four sides of each block intersecting at points which substantially coincide with the points of intersection of the

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Railway Tracks (AREA)
US410153A 1963-11-14 1964-11-10 Railway track support Expired - Lifetime US3313486A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR953717A FR1386315A (fr) 1963-11-14 1963-11-14 Support de voie ferrée perfectionné

Publications (1)

Publication Number Publication Date
US3313486A true US3313486A (en) 1967-04-11

Family

ID=8816538

Family Applications (1)

Application Number Title Priority Date Filing Date
US410153A Expired - Lifetime US3313486A (en) 1963-11-14 1964-11-10 Railway track support

Country Status (5)

Country Link
US (1) US3313486A (fr)
BE (1) BE655599A (fr)
CH (1) CH425856A (fr)
FR (1) FR1386315A (fr)
OA (1) OA00562A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551631A (en) * 1992-07-20 1996-09-03 Allevard Rail support device for unballasted railway track
USD684221S1 (en) * 2012-07-10 2013-06-11 Innovation First, Inc. Toy track support component
CN108999037A (zh) * 2018-07-06 2018-12-14 江苏海迅铁路器材集团股份有限公司 高速铁路轨道固定用小阻力弹条扣件系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925698A (en) * 1908-11-05 1909-06-22 Austin Hance Railway-tie.
US1066085A (en) * 1912-01-20 1913-07-01 Internat Steel Tie Company Rail-support.
US1392376A (en) * 1920-08-27 1921-10-04 Waters Edward Railway-tie
US1436847A (en) * 1922-09-23 1922-11-28 John Merle Concrete railroad roadbed
US3039695A (en) * 1959-03-16 1962-06-19 John L Harmsen Reinforced concrete railway tie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US925698A (en) * 1908-11-05 1909-06-22 Austin Hance Railway-tie.
US1066085A (en) * 1912-01-20 1913-07-01 Internat Steel Tie Company Rail-support.
US1392376A (en) * 1920-08-27 1921-10-04 Waters Edward Railway-tie
US1436847A (en) * 1922-09-23 1922-11-28 John Merle Concrete railroad roadbed
US3039695A (en) * 1959-03-16 1962-06-19 John L Harmsen Reinforced concrete railway tie

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551631A (en) * 1992-07-20 1996-09-03 Allevard Rail support device for unballasted railway track
USD684221S1 (en) * 2012-07-10 2013-06-11 Innovation First, Inc. Toy track support component
CN108999037A (zh) * 2018-07-06 2018-12-14 江苏海迅铁路器材集团股份有限公司 高速铁路轨道固定用小阻力弹条扣件系统

Also Published As

Publication number Publication date
BE655599A (fr) 1965-03-01
FR1386315A (fr) 1965-01-22
CH425856A (fr) 1966-12-15
OA00562A (fr) 1966-07-15

Similar Documents

Publication Publication Date Title
US3289941A (en) Railway track without ballast
US3223328A (en) Track structure for railroads and the like
US3010257A (en) Prestressed girder
US2675695A (en) Composite structure of metal and concrete
US3313486A (en) Railway track support
US2636377A (en) Reinforced concrete beam
US4275832A (en) Resilient support means
US4309125A (en) Integrated bridge construction
US12054890B2 (en) Sleeper
US3717969A (en) Packing piece for civil engineering works
US3994436A (en) Composite railway tie
US2296756A (en) Load transfer device
JPS6361443B2 (fr)
CN216663803U (zh) 一种适用于明桥面的弹性分开式轨道扣件系统
US4381076A (en) Dropped railroad tie for railway without ballast
USRE21880E (en) Road join
KR100503238B1 (ko) 철로형 철골보
JP3798210B2 (ja) プレストレスバラスト軌道構造
RU238055U1 (ru) Железобетонная шпала
CN224016524U (zh) 钢梁与混凝土柱铰接结构
JP3926282B2 (ja) 直結軌道に用いる枕木
JP7678655B2 (ja) 継手構造
CN113931012B (zh) 大跨度桥梁梁端滑移式无砟轨道
CN220335709U (zh) 预制混凝土桥面板与钢梁连接构造
US3221671A (en) Conveyance construction