WO2011103632A1 - A structure for supporting a rail member - Google Patents
A structure for supporting a rail member Download PDFInfo
- Publication number
- WO2011103632A1 WO2011103632A1 PCT/AU2011/000203 AU2011000203W WO2011103632A1 WO 2011103632 A1 WO2011103632 A1 WO 2011103632A1 AU 2011000203 W AU2011000203 W AU 2011000203W WO 2011103632 A1 WO2011103632 A1 WO 2011103632A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base structure
- accordance
- indentation
- track
- anchoring arrangement
- Prior art date
Links
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
-
- 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
Definitions
- the present inventions relates to a base structure for supporting a rail member, and particularly, although not exclusively, to a base structure for supporting rail tracks over underlying track ballast.
- a railway track must always remain in a
- the rails must remain at a constant and correct gauge . Any changes in the gauge may affect the performance of a locomotive, or in some cases cause a derailment of the locomotive;
- the metals used therein may be subject to expansion or contraction depending on the temperature of the surrounding environment. These changes in the properties of the metal rails may cause a rail track to become buckled, misaligned or disconnected if the expansion or contraction of the rails is not adequately managed. These difficulties are further increased due to the heavy loads of an operating locomotive and the
- each sleeper is only able to distribute a limited amount of force onto the ballast.
- supporting at least one rail member comprising: a member having at least one engaging means arranged to engage the at least one rail; and
- At least one anchoring arrangement utilizable to anchor the member to a surface.
- the anchoring arrangement is disposed on at least one portion of the external face of the member.
- the anchoring arrangement provides a serrated profile on at least one external face of the member.
- the anchoring arrangement comprises at least one indentation arranged to engage the structure with the surface.
- the at least one indentation includes a plurality of corrugated
- the at least one indentation includes a plurality of saw toothed slots.
- the at least one indentation includes a plurality of square toothed slots .
- the at least one indentation includes a plurality of half cylindrical slots.
- the at least one indentation is disposed vertically on the structure.
- the at least one indentation is disposed horizontally on the structure.
- the surface comprises track ballast.
- the anchoring arrangement anchors the member to the surface by
- the member further includes at least one engagement means arranged to receive the at least one rail member.
- the engagement means includes at least one of a spike, chair or clip.
- a railway sleeper comprising: an elongated base arranged to support a rail member over a layer of track ballast;
- the elongated base has at least one serrated external face arranged to engage with the layer of track ballast .
- the at least one serrated external face is defined by a plurality of indentations.
- the plurality of indentation is defined by a plurality of corrugated grooves, a plurality of saw toothed slots,. a plurality of square tooth slots, a plurality of half cylindrical slots or a combination thereof.
- a railway track comprising at least one base structure in accordance the first aspect.
- a railway track comprising at least one railway sleeper in accordance with the second aspect .
- a method of manufacturing the base structure comprising the steps of:
- the materials comprise a concrete mixture.
- a method of manufacturing a railway sleeper comprising the steps of :
- Figure 1 is an isometric view of a base structure for supporting a rail member in accordance with one embodiment of the present invention
- Figure 2 is a top, front and side view of the structure of Figure 1;
- Figure 3 is an isometric view of a base structure for supporting a rail member in accordance with another embodiment of the present invention
- Figure 4 is an isometric view of a base structure for supporting a rail member in accordance with another embodiment of the present invention
- Figure 5 is an isometric view of a base structure for supporting a rail member in accordance with another embodiment of the present invention.
- Figure 6 is an isometric view of a base structure for supporting a rail member in accordance with another embodiment of the present invention.
- Figure 7 is an isometric view of a base structure for supporting a rail member in accordance with another embodiment of the present invention.
- a base structure 100 for supporting at least one rail member comprising: a member 102 arranged to receive the at least one rail member; wherein the member has at least one anchoring arrangement 104 utilizable to anchor the member to a surface.
- the base structure 100 is defined by an elongated member 102 arranged to be positioned between a rail member and a surface on which the track is to be laid.
- a plurality of base structures 100 may be placed in suitable positions on a surface after which one or more rail members may be engaged to each of the base structures 100 to create a rail track.
- Track ballast such as crushed stones or "blue metal" may be placed and packed around the base structure 100 such that the base structure 100 becomes surrounded by the ballast.
- a first layer of ballast may have already been placed on the surface before the base structure 100 is placed on to the surface .
- the member 102 may have a plurality of engaging means 106 arranged to engage and hold the rail member which the base structure 100 is to support.
- a suitable engaging means 106 is used to engage the rail member to the base structure 100.
- these engaging means may include, without limitation, rail spikes (e.g. dogspikes) , chairs (e.g. cast iron chairs) or resilient clips (e.g. Pandrol clips) .
- the base structure 100 may include at least one anchoring arrangement 104 arranged to anchor the structure to the ballast.
- the anchoring arrangement 104 arranged to anchor the structure to the ballast.
- the arrangement 104 may include a plurality of indentations defined by a plurality of grooves or slots disposed on at least one of the external faces of the base structure 100.
- the grooves 108 may include different types of patterns, each arranged to engage and interlock with the track ballast. As shown in this embodiment, the grooves 108 are uniformly laid out and comprise a plurality of vertically corrugated grooves.
- the grooves 108 are arranged to contact the track ballast such that the grooves 108 and the crushed stone, dirt or other portions of the track ballast may inter engage and form an interlocking bond with the grooves. This engagement thereby assists in securely anchoring the base structure 100 to the track surface .
- the grooves or, slots may be sized accordingly to allow an optimal interlocking arrangement between the crushed stones.
- the grooves or slots may have a width, diameter or depth of approximately 28mm to 50mm, although other dimensions are possible depending on the track ballast or the conditions in which the base
- the track ballast is comprised of sharp edged stones which assist in
- the base structure 100 may thereby form an interlocking engagement with the surrounding ballast.
- the anchoring arrangement 104 serves to increase the surface area of the external face of the base structure 100. This larger surface area allows a greater area of the base structure to contact and engage the surrounding ballast .
- the base structure 300 comprises an elongated member 302 which may include a slight depression towards the centre 308 of the structure such that a gentle incline is created between the centre 308 and the distal ends 302A & 302B of the base structure 300.
- the base structure 300 may also include anchoring arrangements 304 disposed on portions of at least one external face of the structure, which in this example, comprises a plurality of indentations incorporating a plurality of corrugated grooves 310 arranged to form an interlocking engagement with the underlying track ballast.
- This embodiment is advantageous in that certain types of rail track (suitable for trains operating with a specific camber angle) may be constructed by allowing the rails engaged to the structure to be inclined towards the centre .
- the base structure 400 includes an elongated member 402 having an elevated portion in the centre 408 which declines slightly from the distal ends 402A and 402B of the base structure 400 to the centre 408.
- This embodiment is particularly suitable for use in railway tracks which require a particular elevation to control the incline or decline of the rail track.
- the base structure 500 comprises an elongated member 502 having an anchoring arrangement 504 which includes a plurality of indentations formed by vertical slots 506.
- the slots 506 may be uniformly spaced in a. square tooth formation.
- the base structure 600 comprises an elongated member having an anchoring arrangement 604 which includes plurality of indentations provided by a plurality of vertical slots 606.
- the slots 606 may be uniformly spaced in a saw tooth arrangement.
- the base structure 700 comprises an elongated member having an anchoring arrangement 704 which includes a plurality of indentations provided by a
- the slots 706 may comprise a number of uniformly spaced slots in a half cylindrical shape.
- each of the base structures may be made of concrete, although timber, plastic composites or other suitable materials may be used.
- the base structure is made out of concrete or other materials which may be cast or mould, a cast or mould is created to allow liquid concrete or material to be poured into the cast. The concrete or material is allowed to set, after which, the cast or mould may be removed to create the base structure.
- a pre-stressed steel frame is placed into the cast.
- the frame may be heated to a temperature which causes the steel frame to expand such that once the frame returns to room temperature, the steel contracts .
- a suitable mixture of concrete is poured into the cast.
- the cast is lifted or dismantled from the set concrete mixture, to reveal a base structure with the appropriate anchoring arrangement defined by the cast.
- the additional tension from the frame further strengthens the concrete of the base structure.
- the materials used to create the base structure may include the use of lighter and more environmentally friendly materials such as plastic composites or aerated concrete. These lighter materials may be used as the shape of the base structure provides a superior engagement with the underlying ballast due to the anchoring arrangement, such that the base structure does not need to rely on weight due above to supply an anchoring formation.
- the invention may be used in rail crossing arrangements such as at cross overs, crossings, turn outs or railway switches, etc.
- an example of the base structure may be used to support the rail members over the surface.
- crossing points may be prone to large loads due to the change of direction of a locomotive, embodiments of the present invention are particularly advantageous in such
- the base structure includes an anchoring arrangement which provides superior engagement with the underlying ballast.
- embodiments of the present invention are advantageous because the base structure provides an anchoring arrangement which is capable of providing a superior interlocking engagement with the underlying track ballast. This superior engagement ensures the rail on the track remains aligned and in the correct position during operation.
- the number of base structures required for a length of rail track can potentially reduce (depending on the particular rail application) .
- Other advantages include superior reliability due to a reduction in the risk of buckling in adverse weather conditions. As a corollary, a reduced risk of buckling allows locomotives to operate at normal speed and capacity even during adverse weather conditions .
- lighter materials can be used to create the base structure when compared with other forms of railway sleepers .
- the inclusion of the anchoring arrangements allows a lighter base structure to be used whilst offering the same, if not a superior, level of support for the rail track.
- Lighter structures clearly offer a reduction in material handling issues as well as transportation costs. It follows that the anchoring arrangements in accordance with an
- embodiment of the present invention also provide an advantage in that the amount of ballast needed may be reduced.
- the present invention may also be used in construction of other buildings and infrastructure where a structure is required to be anchored into the ground where the construction of a deep foundation is not viable or possible.
- the constructions of wharfs, jetties or other structures over bodies of water may render it difficult or costly to establish a deep foundation.
- the base structure may be placed in a seabed to engage the seabed and provide a strong and suitable base for the attachment of a load bearing column of the wharf, jetty or structure.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2011220334A AU2011220334A1 (en) | 2010-02-25 | 2011-02-25 | A structure for supporting a rail member |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010900804A AU2010900804A0 (en) | 2010-02-25 | A structure for supporting a rail member | |
AU2010900804 | 2010-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011103632A1 true WO2011103632A1 (en) | 2011-09-01 |
Family
ID=44506080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2011/000203 WO2011103632A1 (en) | 2010-02-25 | 2011-02-25 | A structure for supporting a rail member |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU2011220334A1 (en) |
WO (1) | WO2011103632A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109457550A (en) * | 2018-12-18 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | Groove type connection reinforcing structure and construction method between a kind of sleeper block and railway roadbed |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US730059A (en) * | 1902-08-19 | 1903-06-02 | James H Van Tassel | Metallic railway-tie. |
US1015172A (en) * | 1911-07-13 | 1912-01-16 | Howard F Gorsuch | Railroad-tie. |
US1616266A (en) * | 1926-06-01 | 1927-02-01 | William H Lacey | Railroad tie |
US2128530A (en) * | 1936-10-26 | 1938-08-30 | Charles M Cadman | Rail fastening construction |
US5104039A (en) * | 1991-02-22 | 1992-04-14 | Cxt Incorporated | Railroad tie |
-
2011
- 2011-02-25 AU AU2011220334A patent/AU2011220334A1/en not_active Abandoned
- 2011-02-25 WO PCT/AU2011/000203 patent/WO2011103632A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US730059A (en) * | 1902-08-19 | 1903-06-02 | James H Van Tassel | Metallic railway-tie. |
US1015172A (en) * | 1911-07-13 | 1912-01-16 | Howard F Gorsuch | Railroad-tie. |
US1616266A (en) * | 1926-06-01 | 1927-02-01 | William H Lacey | Railroad tie |
US2128530A (en) * | 1936-10-26 | 1938-08-30 | Charles M Cadman | Rail fastening construction |
US5104039A (en) * | 1991-02-22 | 1992-04-14 | Cxt Incorporated | Railroad tie |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109457550A (en) * | 2018-12-18 | 2019-03-12 | 中铁第四勘察设计院集团有限公司 | Groove type connection reinforcing structure and construction method between a kind of sleeper block and railway roadbed |
Also Published As
Publication number | Publication date |
---|---|
AU2011220334A1 (en) | 2012-09-13 |
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