WO2013029530A1 - 无砟轨道系统 - Google Patents
无砟轨道系统 Download PDFInfo
- Publication number
- WO2013029530A1 WO2013029530A1 PCT/CN2012/080667 CN2012080667W WO2013029530A1 WO 2013029530 A1 WO2013029530 A1 WO 2013029530A1 CN 2012080667 W CN2012080667 W CN 2012080667W WO 2013029530 A1 WO2013029530 A1 WO 2013029530A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- track system
- rail
- base
- ballastless track
- 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
- 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
- E01B1/007—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with interlocking means to withstand horizontal forces
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- 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
- 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
- E01B1/004—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with prefabricated elements embedded in fresh concrete or asphalt
-
- 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
Definitions
- the present invention relates to a rail system, and in particular to a ballastless track system.
- BACKGROUND OF THE INVENTION The structure of a ballastless track is accepted by high-speed railways all over the world for its high ride comfort, high stability, high durability and high reliability.
- the high-speed railway of China also adopts a ballastless track structure.
- ballastless track structures at home and abroad and generally include two structural systems, unit and vertical connection. Comparing and analyzing the technical characteristics of different types of ballastless tracks, the unit ballastless track mainly includes structural layers such as track plates, casting layers and bases.
- the track plates are made of prefabricated plates, and the pouring layer and the base are sequentially arranged below the track plates.
- the casting layer acts as a key structural layer for elastic adjustment and force transmission support of the ballastless track structure, which directly affects the fast and safe operation of high-speed trains.
- the track plate is laid vertically above the casting layer along the line, and a circular convex block is used between the longitudinal direction of the adjacent two track plates when laying, and the track plate is adjusted and installed in place, An asphalt mortar casting layer is filled between the rail plate and the casting layer, and a resin mortar is filled between the rail plate and the circular convex block.
- the track plate unit is set, the structural bearing force and force transmission are clear, and the maintainability is strong.
- the double-block ballastless track structure is relatively simple, and the track bed plate is placed on site, which has strong adaptability to different types of fasteners, and its construction cost is low; however, the concrete construction amount is large, and the track bed plate crack is difficult to control.
- China has accumulated valuable experience in the structural design, construction methods and technical requirements of the track foundation of the ballastless track, laying a foundation for further development of ballastless track technology.
- the present invention is directed to a ballastless track system that is highly reliable, durable, easy to construct, and easy to maintain.
- the present invention provides a ballastless track system, comprising: a base; a track plate disposed above the base; a casting layer disposed between the base and the track plate, the casting layer being made of self-compacting concrete or cement
- the asphalt mortar or resin mortar is filled and formed, and the casting layer has a first reinforcing steel structure; two rows of railing platforms are arranged in parallel on the rail plate; and the rails are arranged on the railing platform.
- the ballastless track system is a unit structure.
- the arrangement of the first reinforcing bar structure is a single-layer mesh, and the first reinforcing bar structure is located at a position in the middle or the middle of the casting layer in the height direction.
- the ballastless track system of the present invention further includes: a connecting member, the first end of the connecting member extends into the rail plate, and the second end of the connecting member extends into the casting layer; the connecting member and the rail plate are integrated, and are connected
- the pieces are made of insulating material.
- the projections of the connecting piece and the rail in the plan view of the rail at least partially coincide, and the projection of the connecting element in the plan view of the rail is located within the projection range of the railing station in the plan view of the rail.
- the base is made of concrete, and the base has a steel structure.
- the base has a limiting structure acting on the casting layer: the limiting structure is a limiting boss, the base has a limiting groove along the extending direction, and the limiting boss is formed by the casting layer protruding into the limiting groove. .
- the limiting boss has a circular cross section, and has a cushion layer on the annular surface of the limiting groove of the base.
- the limiting boss has a rectangular cross section, and a cushion layer is disposed at two opposite planes in the longitudinal direction of the limiting groove of the base or at two opposite sides or four sides of the lateral direction. Further, the angle between the cushion layer and the horizontal direction is 45° or more and 90° or less.
- the thickness of the cushion layer is greater than or equal to 5 mm and less than or equal to 50 mm.
- the cushion layer has a double-layer structure, and the outer layer of the cushion layer is made of a hard foam plastic sheet or a foam board, and the inner layer of the cushion layer is made of rubber or foam material or vulcanized rubber or resin.
- the track plate and the two rows of rail-bearing platforms are of a unitary structure, wherein a spacing between each of the one of the rows of rail-bearing platforms is greater than a spacing between each of the other of the rows of rail-bearing platforms.
- the track plate and the two rows of rail-bearing platforms are of a unitary structure, wherein the height of one row of the track-bearing stages is higher than the height of the other row of the track-bearing stages in a direction perpendicular to the track-plate.
- the track plate and the two rows of rail-bearing platforms are of a unitary structure, wherein the gauge distance between one row of the track-bearing table and the other column of the track-bearing table is varied.
- the ballastless track system comprises: a base, a track plate, a casting layer, a connecting piece, two rows of rail-bearing platforms and a rail.
- the rail plate is disposed above the base; the casting layer is disposed between the base and the rail plate, and the pouring layer is formed by filling the self-compacting concrete or the cement emulsified asphalt mortar or the resin mortar, and the casting layer has the first reinforcing steel structure therein.
- Two rows of rails are placed on the track platform.
- the track plate and the casting layer are integrally connected to form a solid composite structure, which improves the integrity of the track system and can meet the requirements of the track for stability and comfort.
- the casting layer is formed by self-compacting concrete or cement emulsified asphalt mortar or resin mortar, so that the mechanical properties of the casting layer and the track plate are as close as possible, the strength is not much different, and the track plate can be adjusted, thus effectively solving the track in the prior art.
- the casting layer formed by the plate and the asphalt mortar is prone to the phenomenon of seam separation, and the longitudinal end of the track plate is prone to warpage.
- the use of self-compacting concrete or cement emulsified asphalt mortar or resin mortar to form the casting layer can simplify the process and facilitate Control engineering quality and reduce environmental pollution.
- the first reinforcing bar structure in the casting layer can improve the stress characteristics of the casting layer.
- FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a ballastless track system according to the present invention
- FIG. 2 is a schematic cross-sectional view showing the ballastless track system of FIG. 2 is a partially enlarged cross-sectional view of the ballastless track system according to the present invention
- FIG. 5 is a schematic view showing the track of the ballastless track system of FIG.
- FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a ballastless track system according to the present invention
- FIG. 2 is a schematic cross-sectional view showing the ballastless track system of FIG. Referring to FIG. 1 and FIG.
- the ballastless track system of the embodiment includes: a base 16, a track plate 12, a casting layer 14, a connecting member 13, two rows of railing tables 11 and 1 and Rail 10.
- the rail plate 12 is disposed above the base 16; the pouring layer 13 is disposed between the base 16 and the rail plate 12, and the pouring layer 14 is formed by filling with self-compacting concrete or cement emulsified asphalt mortar or resin mortar, and pouring layer 14 has a first reinforcing bar structure 14a; two rows of railing tables 11 and 1 are arranged in parallel on the rail plate 12; two rows of rails 10 are arranged on the railing tables 11 and 1 .
- the rail plate 12 is integrally connected with the casting layer 14 by the bonding force with the connecting member 13 and the rail plate 12 and the casting layer 14, thereby forming a firm composite structure, improving the integrity of the rail system, and satisfying the stability and comfort of the rail pair.
- the casting layer is formed by self-compacting concrete or cement emulsified asphalt mortar or resin mortar, so that the mechanical properties of the casting layer and the track plate are as close as possible, the strength is not much different, and the track plate can be adjusted, thus effectively solving the track in the prior art.
- the casting layer formed by the plate and the asphalt mortar is prone to sewn phenomenon, and the longitudinal end of the rail plate 12 is prone to warpage.
- the formation of the casting layer 14 by self-compacting concrete or cement emulsified asphalt mortar or resin mortar can simplify the process. It is convenient to control the quality of the project and reduce the pollution to the environment.
- the first reinforcing structure 14a in the casting layer 14 can improve the force characteristics of the casting layer.
- the ballastless track system of the present invention has high reliability, good durability, easy construction and easy maintenance.
- the ballastless track system is a unit structure having different unit structures for different lines, such as roadbeds, bridges, tunnels, and the like.
- the base 16 and three rail plates 12 there are one base 16 and three rail plates 12, and in the case of a bridge, one base 16 and one rail plate 12, and in the case of a tunnel, one base 16 is used.
- the advantage of this is that the base section of the road and the length of the base section are short, which can adapt to the requirements of severe temperature and temperature difference in severe cold regions and cold regions.
- the bridge section adopts a single plate length range to set the base to increase the constructability of the track system. And maintainability.
- the arrangement of the first reinforcing bars 14a in the casting layer 14 is a single layer mesh or a multilayer mesh or a reinforcing cage.
- the first reinforcing bar structure 14a is arranged in a single-layer mesh, and the first reinforcing bar structure 14a is located at a position in the middle or the middle of the casting layer 14 in the height direction. Or preferably, if the casting layer 14 is thick, the first reinforcing steel structure 14a is arranged in a multi-layered mesh or a reinforcing cage, and the first reinforcing steel structure 14a is symmetrically disposed along the central plane of the casting layer 14 in the height direction.
- the arrangement of the first reinforcing bar structure 14a is a multi-layer mesh or a steel cage
- the multi-layer mesh or the arrangement of the reinforcing cage needs to avoid other Parts, avoid mutual interference.
- the pouring layer 14 with reinforcing steel structure also functions as a bearing force, which can withstand the longitudinal and lateral forces under the action of train load and temperature load, and the foundation settlement and other structures on the upper part of the track. The adverse effects caused.
- the first end of the connector 13 of the ballastless track system extends into the track panel 12 and the second end of the connector 13 extends into the casting layer 14.
- the connecting member 13 must be provided as necessary to strengthen the joint between the two layers, so that the rail plate 12 and the pouring layer 14 constitute a firm "composite structure"", and maintain the long-term reliability of the composite structure.
- the connecting member 13 can be in the form of pre-embedded reinforcing steel at the bottom of the rail plate 12.
- the type of the protruding reinforcing bar can be a reinforcing member such as a shearing nail, a single or a door type, or the like.
- the connecting member 13 is made of an insulating material due to the need for track circuit insulation and integrated grounding, and the connecting member 13 is preferably a resin reinforcing bar or a reinforcing bar having an insulating coating.
- the connecting member 13 is connected to the portion to be particularly strengthened by pre-buried or later through the drilling or the reserved hole, etc., so as to make the composite structure more firm and reliable, and at the same time reduce the height of the rail system.
- the projections of the connecting piece 13 and the rail 10 in the plan view plane of the rail 10 at least partially coincide, and the projection of the connecting piece 13 in the plan view of the rail 10 is situated on the top surface of the railing table 11 and 1 in the rail 10 Within the projection range.
- the connecting member 13 is mainly located here to take into account the longitudinal and lateral forces under the action of the train load and the temperature load, and the adverse effects of the foundation settlement on the upper structure of the track, and at the same time partially strengthen the track plate and the casting layer. effect.
- the base 16 is made of concrete, and the base 16 has a second reinforcing structure.
- ordinary steel bars can be used for reinforcement in the base 16.
- the upper surface of the base 16 (between the base 16 and the casting layer 14) is provided with an isolating layer 15 for separating the composite structure from the base 16, and at the same time, due to the arrangement of the separating layer 15, the deformation between different structural layers can be coordinated.
- a certain buffering effect on the vibration caused by the train can prevent the reflection of the crack generated by the base 16 in the long-term use from the upper structure, and provide conditions for the maintenance and repair of the track system when it is damaged.
- the spacer layer 15 is preferably a geotextile having a certain coefficient of friction and a good hydrophobic property such as a geotextile.
- the limit structure 200 is disposed on the base 16 for longitudinal and lateral restraint in order to increase its safety and stability.
- the base 16 has a limiting structure 200 acting on the casting layer 14.
- the limiting structure 200 is a limiting boss, and the base 16 has a limit along the extending direction.
- the groove, the limiting boss is formed by the casting layer 14 protruding into the limiting groove.
- the cross-section of the limiting boss may have various structures, wherein, preferably, the limiting boss has a circular cross section, and has an annular surface on the limiting groove of the base 16 Cushion layer 21.
- An isolation layer 15 is provided between the casting layer 14 and the base 16 at a position other than the cushion layer 21.
- the arrangement of the barrier layer 15 and the resilient cushion layer 21 prevents dangerous forces from acting on the limit bosses and the stop recesses and does not substantially impair the function of the stop structure 200.
- the limiting boss has a rectangular cross section, and buffer is provided at two opposite planes in the longitudinal direction of the limiting groove of the base 16 or at two opposite sides or four sides of the lateral direction. Cushion 21.
- a barrier layer 15 is provided between the casting layer 14 and the base 16 at a location other than the cushion layer 21.
- the function of the isolation layer 15 is the same as that of the above embodiment, and details are not described herein again. It should be noted that: when the cushion layer 21 is set, it should be close to the side of the limiting groove, and the slope of the slope should not be too slow. Otherwise, the longitudinal and lateral limits of the composite structure of the track plate 12 and the casting layer 14 are the track system. Stability has an adverse effect.
- the angle ⁇ between the cushion layer 21 and the horizontal direction is greater than or equal to 45° and less than or equal to 90°.
- the thickness of the cushion layer 21 is preferably 5 mm or more and 50 mm or less.
- the cushion layer 21 has a two-layer structure, and the outer layer of the cushion layer 21 is made of a rigid foam board or a foam board having a low rigidity, and the inner layer of the cushion layer 21 is made of a rubber or a foam material. Or vulcanized rubber or resin, the cushion layer should have better hydrophobic properties.
- the ballastless track system of the present invention is also very adaptable for curved and vertical curved sections. As shown in Fig. 5, the track plate 12 is provided with ordinary steel bars, and the steel bars can be made of resin steel bars or insulating coatings, insulation cards, etc., to meet the technical requirements of track circuit insulation.
- a prestressed structure combining ordinary steel bars and prestressed steel bars is used, which can effectively prevent the rail plate 12 from being cracked.
- the track plate 12 is provided with a plurality of pouring holes 17 to facilitate the pouring of the casting layer 14.
- the two ball bearing tables 11 and 11' disposed above the track plate 12 can be adjusted during the manufacturing process of the track plate 12 along the vertical direction of the X-axis, the Y-axis and the track plate 12 as shown in the drawing, which will be very It is conducive to the adaptability of the track system in different lines.
- the rail plate 12 and the two rows of rail-bearing tables 11 and 1 are integrally formed, wherein between each of the rows of the rail-bearing tables 1 ⁇
- the spacing D1 ' is greater than the spacing D1 between each of the other rail-bearing stages 11 in the other column of rail-bearing stations 11.
- the two rows of rail-bearing tables 11 and 1 ⁇ can be symmetrically arranged along the curve.
- the spacing D1 ' between each of the one of the rows of the rail-bearing stations 1 ⁇ is larger than that of the other of the other rows of the rail-bearing stations 11
- the distance D1 between the rail-bearing tables 11 reduces the number of the rail-bearing tables 1 ⁇ without affecting the stability of the orbital operation, thereby saving costs.
- the rail plate 12 and the two rows of rail-bearing tables 11 and 11' are of a unitary structure, wherein the height of a row of the rail-bearing tables 1 ⁇ is higher than the direction perpendicular to the rail-board 12 The height of the other column of the railing table 11.
- the ultra-high setting of the lot can be realized by the wire base 16, and at the same time, when the track plate 12 is manufactured, according to the setting requirement of the curve super-high, the heights of the two rows of the rail-bearing tables 11 and 1 ⁇ arranged on the top surface of the track plate 12 are adjusted.
- the requirements for ultra-high variation and orbital adjustment of the curved section can be achieved, and the workload of the fine adjustment of the later track can be reduced.
- the heights of the two rows of the track-bearing platforms are gradually increased to accommodate the curved sections. Only the tendency of the gradual increase of the railing table 11 is shown in FIG.
- the track plate 12 and the two rows of rail-bearing tables 11, 1 are a unitary structure, wherein the gauge between one row of the track-bearing table 1 and the other of the rows of the track-bearing tables 11 is varied.
- the track plate adopts factory prefabrication, and the manufacturing quality and precision are easy to ensure; the amount of on-site concrete construction is reduced, which is favorable for speeding up construction. Progress; Prestressed design can be adopted. Under normal load, the track plate will not crack, which is beneficial to improve the durability of the track structure.
- the space position of the track table can be adjusted, which is conducive to the fine adjustment of the track direction.
- casting layer such as self-compacting concrete is poured, and the composite structure is formed by joints or layers to improve the stress state of the track plate; the self-compacting concrete can be used to replace the cement emulsified asphalt mortar filling layer, track system
- the single material of the project is conducive to reducing the project cost and improving the durability of the track system.
- the track board is limited by interlayer bonding or connecting parts:
- the "composite structure" composed of the track board and the casting layer is mechanically restricted by the base limit structure, the convex type stop is eliminated, and the construction of the track system is improved.
- the track structure is stable.
- An isolation layer is arranged between the casting layer and the base to coordinate the deformation between the "composite structure" and the base, to block the reflection of the base crack to the casting layer, and to provide conditions for the track system repair under special circumstances.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1404514.0A GB2513983B (en) | 2011-08-31 | 2012-08-28 | Ballastless track system |
US14/342,242 US9758932B2 (en) | 2011-08-31 | 2012-08-28 | Ballastless track system |
ROU201400006U RO201400006U3 (ro) | 2011-08-31 | 2012-08-28 | Sistem de cale ferată fără balast |
RU2014112087/11U RU150693U1 (ru) | 2011-08-31 | 2012-08-28 | Система небалластированного пути |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011102564486A CN102966008A (zh) | 2011-08-31 | 2011-08-31 | 无砟轨道系统 |
CN201110256448.6 | 2011-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013029530A1 true WO2013029530A1 (zh) | 2013-03-07 |
Family
ID=47755331
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/080667 WO2013029530A1 (zh) | 2011-08-31 | 2012-08-28 | 无砟轨道系统 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9758932B2 (zh) |
CN (1) | CN102966008A (zh) |
GB (1) | GB2513983B (zh) |
RO (1) | RO201400006U3 (zh) |
RU (1) | RU150693U1 (zh) |
WO (1) | WO2013029530A1 (zh) |
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CN113047096A (zh) * | 2021-04-21 | 2021-06-29 | 石家庄铁道大学 | 用于纵横梁体系钢桥的无砟轨道组件、施工装置及工艺 |
CN114197252A (zh) * | 2021-12-29 | 2022-03-18 | 中铁第四勘察设计院集团有限公司 | 具有底座限位凹槽监测功能的无砟轨道及其健康监测方法 |
CN114197252B (zh) * | 2021-12-29 | 2023-07-14 | 中铁第四勘察设计院集团有限公司 | 具有底座限位凹槽监测功能的无砟轨道及其健康监测方法 |
CN115652700A (zh) * | 2022-12-06 | 2023-01-31 | 中国铁路设计集团有限公司 | 一种全断面装配式轨道结构 |
CN117626721A (zh) * | 2024-01-24 | 2024-03-01 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | 一种隔离基础变形的无砟轨道系统 |
CN117626721B (zh) * | 2024-01-24 | 2024-04-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | 一种隔离基础变形的无砟轨道系统的施工方法 |
Also Published As
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GB201404514D0 (en) | 2014-04-30 |
CN102966008A (zh) | 2013-03-13 |
US9758932B2 (en) | 2017-09-12 |
GB2513983A (en) | 2014-11-12 |
RO201400006U2 (ro) | 2015-02-27 |
RO201400006U3 (ro) | 2018-07-30 |
GB2513983B (en) | 2017-11-15 |
US20140203094A1 (en) | 2014-07-24 |
RU150693U1 (ru) | 2015-02-20 |
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