CN112431071A - Embedded track structure of high-speed railway - Google Patents
Embedded track structure of high-speed railway Download PDFInfo
- Publication number
- CN112431071A CN112431071A CN202011378541.XA CN202011378541A CN112431071A CN 112431071 A CN112431071 A CN 112431071A CN 202011378541 A CN202011378541 A CN 202011378541A CN 112431071 A CN112431071 A CN 112431071A
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- Prior art keywords
- rail
- track
- grooves
- adjusting
- base
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- 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.)
- Pending
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 19
- 229920002635 polyurethane Polymers 0.000 claims abstract description 10
- 239000004814 polyurethane Substances 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims abstract description 9
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 7
- 238000004873 anchoring Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000945 filler Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 description 6
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
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
- 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
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The utility model provides an embedded track structure of high-speed railway, includes the track board of base and base top, its characterized in that: the track plate is prefabricated by reinforced concrete, and a height-adjusting base plate, an elastic base plate and a steel rail are arranged in the two rail bearing grooves on the track plate from bottom to top; rail adjusting grooves are longitudinally arranged at equal intervals in the rail bearing grooves; rail adjusting pieces on two sides of a steel rail in the rail adjusting groove are fixed at the bottom of the rail adjusting groove through anchor bolts; a damping block is embedded between the front hammer of the rail adjusting piece and the rail web of the steel rail; filling polyurethane filler between the rail bearing groove and the steel rail outside the rail adjusting groove; the bottom surface of the track slab is connected with a cast-in-place self-compacting mortar layer; the protrusion on the top surface of the self-compacting mortar layer is matched with the groove on the bottom surface of the track slab, and an isolating layer is arranged between the bottom surface and the prefabricated base. The rail can greatly reduce the environmental noise, reduce the corrugation of the steel rail and the maintenance of the anchor bolt, and has convenient maintenance and low cost; the mass, mechanical production and automatic laying of the rails can be realized, and the laying of the high-speed railway line is convenient and quick.
Description
Technical Field
The invention relates to a track structure for a high-speed railway.
Background
High-speed railways have become a necessary trend and a realistic need for the development of railway systems in China. In order to meet the requirements of safety of running and riding comfort of a passenger special line train, the railway track is required to have high smoothness and high stability. The embedded ballastless track structure has the technical characteristics of good structure constancy, stability, durability, less maintainability, economy and the like, thereby being widely applied to domestic and foreign high-speed railways.
The embedded ballastless track structure is formed by compressing steel rails in a steel rail groove of a cast-in-place unit plate group through discrete fasteners at certain intervals. The fastener is mainly composed of an anchoring bolt at the rail side, a pressing elastic strip and a plurality of base plates at the rail bottom. A large amount of gaps exist between the steel rails and the steel rail grooves, and the following problems exist: 1. the impact load of the train passing by is buffered by the backing plate and the discrete compression elastic strips, belongs to discrete point type buffering, and has limited buffering capacity and larger environmental vibration and noise. 2. The track is connected and supported by a fastener and is also in a discrete point structure; in addition, the elasticity of the elastic strip at each connection point depends on the pre-tightening torque of the anchor bolt, and the pre-tightening force of the anchor bolt at each point on the rail is difficult to keep consistent, so that the support rigidity of each position of the steel rail is changed greatly, the smoothness is poor, the steel rail is easy to generate corrugation loss in the longitudinal direction (irregular wavy abrasion of the steel rail along the longitudinal surface), strong vibration and noise are further caused, and the maintenance cost of the steel rail is increased. 3. The anchor bolt and the elastic strip on the track form a dynamic balance pre-tightening state, and the pre-tightening force is easy to deviate in the using process, so that the track needs to be frequently replaced and maintained, and the maintenance cost of the track is increased.
Disclosure of Invention
The invention aims to provide an embedded track structure of a high-speed railway, which can greatly reduce environmental noise, reduce corrugation of steel rails and maintenance of anchor bolts, is convenient for track maintenance and has lower maintenance cost; the method can also realize batch, mechanical production and automatic laying of the rails, shorten the railway construction period and ensure that the high-speed railway line is laid conveniently and quickly.
The invention adopts the technical scheme that the invention achieves the aim that: the utility model provides an embedded track structure of high-speed railway, includes the track board of base and base top, its characterized in that:
the track slab is prefabricated by reinforced concrete, two rail supporting grooves are longitudinally and symmetrically distributed on the track slab, the cross section of each rail supporting groove is in a bottle shape, a height-adjusting base plate, an elastic base plate and a steel rail are sequentially paved in each rail supporting groove from bottom to top, the width of each height-adjusting base plate and the width of each elastic base plate are equal to the width of each rail supporting groove, the width of each steel rail is smaller than the width of each rail supporting groove, and the rail top of each steel rail is higher than the corresponding rail supporting groove;
the rail supporting grooves are provided with rail adjusting grooves with the width larger than that of the rail supporting grooves at equal intervals in the longitudinal direction, the cross sections of the rail adjusting grooves are rectangular, and the longitudinal axes of the rail adjusting grooves are superposed with the longitudinal axes of the rail supporting grooves; the two sides of the steel rail in the rail adjusting groove are provided with hammer-shaped rail adjusting parts, the front hammer faces of the rail adjusting parts face the steel rail, and bases of inclined handles of the rail adjusting parts are fixed at the bottoms of the two sides of the rail adjusting groove through anchoring bolts; a damping block is tightly embedded between the front hammer of the rail adjusting piece and the rail web of the steel rail; the gap between the rail and the rail area outside the rail adjusting groove is filled with a polyurethane filling body;
the bottom of the track slab is uniformly provided with two grooves in the longitudinal direction, the bottom surface of the track slab is connected with a cast-in-place self-compacting mortar layer, and two bulges on the top surface of the self-compacting mortar layer are matched with the two grooves on the bottom surface of the track slab; the bottom surface of the self-compacting mortar layer is tightly attached to the base through the isolation layer; the base is prefabricated by reinforced concrete or made of metal.
The laying method of the embedded track structure comprises the following steps:
firstly, laying an isolation layer on a base and the top surface of the base, erecting a template with a cast-in-situ self-compaction mortar layer on the periphery of the top surface of the isolation layer, aligning a track plate to the upper part of the template, injecting self-compaction mortar into the template through a grouting hole on the track plate, and then removing the template, namely forming a self-compaction mortar layer with a bulge on the bottom surface between the isolation layer and the track plate; and then, sequentially laying a height-adjusting base plate, an elastic base plate and a steel rail in a rail bearing groove of the rail plate, and fixing a rail adjusting piece in the rail adjusting groove by using an anchoring bolt, namely finishing the laying of the embedded type rail structure.
Compared with the prior art, the invention has the beneficial effects that:
first, the first grade of rail adjusting spare is supported and is realized with the anchor fixed mode of anchor bolt, relies on the dynamic balance that the pretightning force of anchor bolt and the reverse elasticity of bullet strip formed to realize supporting than current fastener, and its supporting role is more firm, stable, the safety of assurance train operation that can be better. The firm and stable anchoring force of each rail adjusting piece is not easy to change, so that the anchoring force among the rail adjusting pieces is easy to keep consistent; and filling the gaps in the rail bearing groove with a polyurethane filling body to form a secondary support. The two-stage support is matched to form a continuous integral support structure, so that the rigidity change of each part of the steel rail is small, the smoothness is good, the corrugation loss of the steel rail is greatly reduced, the vibration and noise of a train during running are obviously reduced, the riding comfort is improved, and the maintenance cost of the steel rail is also reduced.
And secondly, when the train passes through, the vertical impact load generated by the contact of the wheels and the steel rail is attenuated and absorbed by a first-stage damping structure consisting of an elastic base plate at the bottom of the steel rail, a self-compacting mortar layer and an isolating layer. The transverse impact load is attenuated and absorbed by a damping block between the rail web of the steel rail and the rail adjusting part in the rail adjusting groove, and the transverse impact load of the steel rail is further attenuated and absorbed by the surrounding fully-enclosed polyurethane filler in the rail bearing groove area outside the rail adjusting groove; in a word, the damping block and the polyurethane filling body are skillfully matched to form a secondary vibration damping structure, so that the transverse impact load is continuously and comprehensively absorbed and attenuated. The multistage vibration-damping noise-eliminating track structure greatly reduces vibration and noise when a train passes through, so that the train runs more stably and is more comfortable to ride.
Three, through the cast-in-place self-compaction mortar layer in grouting hole of track board, the bottom surface can with isolation layer zonulae occludens, the top surface can solidify with the track board and be connected, two archs that self-compaction mortar layer formed in the recess of track board simultaneously for self-compaction mortar layer is more firm with being connected of track board. Except that the self-compacting mortar layer is cast-in-place, other components are factory prefabricated components; the method realizes the batch, mechanical production and automatic laying of the rail members to the maximum extent, shortens the construction period of railway construction, and ensures that the high-speed railway line is conveniently and quickly laid.
Furthermore, the top surface of the elastic base plate is a slope matched with the bottom slope of the steel rail.
Therefore, a specified rail bottom slope is formed when the steel rail is conveniently installed, and the requirement of train operation is met.
Furthermore, strip-shaped through holes are reserved between the two sides of the top of the rail bearing groove and the polyurethane filler, so that the water-dredging belt is formed.
Therefore, the water drainage belt can effectively drain water, prevent water from permeating into the rail bearing groove and generating accumulated water, and reduce the aging of the isolation layer, the elastic base plate and the heightening base plate and the corrosion of the steel rail.
Furthermore, the base of the inclined handle of the rail adjusting piece is fixed at the bottoms of the two sides of the rail adjusting groove through the anchoring bolts in a specific mode that: the anchoring bolt penetrates through the transverse strip-shaped through hole in the base of the rail adjusting piece and is in threaded connection with the sleeve pre-embedded at the bottom of the rail adjusting groove.
Therefore, the transverse position of the rail adjusting part can be adjusted according to the actual requirement of the steel rail through the transverse strip-shaped through hole on the rail adjusting part base, so that the steel rail is guaranteed to be stable and fixed, and the transverse accurate positioning of the steel rail is facilitated.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic top view of an embodiment of the present invention.
Fig. 2 is a schematic end view of the structure of fig. 1.
Fig. 3 is an enlarged schematic view of a portion B of fig. 1.
Fig. 4 is a schematic sectional view taken along line a-a of fig. 1.
Fig. 5 is an enlarged schematic view of a portion C of fig. 4.
Detailed Description
Examples
Fig. 1 to 5 show that one embodiment of the present invention is: the utility model provides an embedded track structure of high-speed railway, includes the track board 1 of 4 tops of base 4 and base, its characterized in that:
the track slab 1 is prefabricated by reinforced concrete, two rail bearing grooves 7 are longitudinally and symmetrically distributed on the track slab 1, the cross sections of the rail bearing grooves 7 are in a bottle shape, an heightening base plate 12, an elastic base plate 11 and a steel rail 5 are sequentially paved in the rail bearing grooves 7 from bottom to top, the widths of the heightening base plate 12 and the elastic base plate 11 are equal to the width of the rail bearing grooves 7, the width of the steel rail 5 is smaller than that of the rail bearing grooves 7, and the rail top of the steel rail 5 is higher than the rail bearing grooves 7;
fig. 5 and fig. 1-4 show that the rail-supporting grooves 7 are provided with rail-adjusting grooves 6 with a width larger than that of the rail-supporting grooves 7 at equal intervals in the longitudinal direction, the cross section of the rail-adjusting grooves 6 is rectangular, and the longitudinal axis of the rail-adjusting grooves 6 is coincident with the longitudinal axis of the rail-supporting grooves 7; hammer-shaped rail adjusting parts are arranged on two sides of a steel rail 5 in the rail adjusting groove 6, the front hammer 10c surface of each rail adjusting part faces the steel rail 5, and a base 10a of an inclined handle 10b of each rail adjusting part is fixed at the bottom of two sides of the rail adjusting groove 6 through an anchoring bolt 15; a damping block 14 is tightly embedded between the front hammer 10c of the rail adjusting piece and the rail web of the steel rail 5; the gap between the rail 5 and the area of the rail bearing groove 7 except the rail adjusting groove 6 is filled with a polyurethane filling body 13;
fig. 1 and 4 show that two grooves 1a are uniformly arranged at the bottom of the track slab 1 in the longitudinal direction, the bottom surface of the track slab 1 is connected with a cast-in-place self-compacting mortar layer 2, and two protrusions 2a on the top surface of the self-compacting mortar layer 2 are matched with the two grooves 1a on the bottom surface of the track slab 1; the bottom surface of the self-compacting mortar layer 2 is tightly attached to the base 4 through the isolation layer 3; the base 4 is prefabricated by reinforced concrete or made of metal.
Fig. 5 shows that the top surface of the elastic pad 11 of this example is a slope adapted to the rail bottom slope of the steel rail 5.
Fig. 2 shows that strip-shaped through holes are reserved between the two sides of the top of the rail bearing groove 7 and the polyurethane filling body 13 to form the water-repellent belt 17.
Fig. 3 and 5 show that the base 10a of the inclined handle 10b of the rail adjusting member of the present embodiment is fixed to the bottom of the rail adjusting groove 6 by the anchor bolt 15 in a specific manner: the anchor bolt 15 passes through a transverse strip-shaped through hole on the base 10a of the rail adjusting piece and is in threaded connection with a sleeve 18 pre-buried at the bottom of the rail adjusting groove 6.
Claims (4)
1. The utility model provides an embedded track structure of high-speed railway, includes track board (1) of base (4) and base (4) top, its characterized in that:
the track plate (1) is prefabricated by reinforced concrete, two rail bearing grooves (7) are longitudinally and symmetrically distributed on the track plate (1), the cross sections of the rail bearing grooves (7) are bottle-shaped, a heightening base plate (12), an elastic base plate (11) and a steel rail (5) are sequentially laid in the rail bearing grooves (7) from bottom to top, the widths of the heightening base plate (12) and the elastic base plate (11) are equal to the width of the rail bearing grooves (7), the width of the steel rail (5) is smaller than the width of the rail bearing grooves (7), and the rail top of the steel rail (5) is higher than the rail bearing grooves (7);
the rail supporting grooves (7) are provided with rail adjusting grooves (6) with the width larger than that of the rail supporting grooves (7) at equal intervals in the longitudinal direction, the cross sections of the rail adjusting grooves (6) are rectangular, and the longitudinal axes of the rail adjusting grooves (6) are overlapped with the longitudinal axes of the rail supporting grooves (7); hammer-shaped rail adjusting parts are arranged on two sides of a steel rail (5) in the rail adjusting groove (6), the front hammer (10c) surface of each rail adjusting part faces the steel rail (5), and a base (10a) of an inclined handle (10b) of each rail adjusting part is fixed to the bottoms of two sides of the rail adjusting groove (6) through an anchoring bolt (15); a damping block (14) is tightly embedded between the front hammer (10c) of the rail adjusting piece and the rail web of the steel rail (5); the gap between the rail bearing groove (7) region except the rail adjusting groove (6) and the rail (5) is filled with a polyurethane filling body (13);
the bottom of the track slab (1) is uniformly provided with two grooves (1a) in the longitudinal direction, the bottom surface of the track slab (1) is connected with a cast-in-place self-compacting mortar layer (2), and two bulges (2a) on the top surface of the self-compacting mortar layer (2) are matched with the two grooves (1a) on the bottom surface of the track slab (1); the bottom surface of the self-compacting mortar layer (2) is tightly attached to the base (4) through the isolation layer (3); the base (4) is prefabricated by reinforced concrete or made of metal.
2. The embedded track structure of a high-speed railway according to claim 1, wherein: the top surface of the elastic backing plate (11) is a slope matched with the rail bottom slope of the steel rail (5).
3. The embedded track structure of a high-speed railway according to claim 1, wherein: strip-shaped through holes are reserved between the two sides of the top of the rail bearing groove (7) and the polyurethane filling body (13) to form a water-dredging belt (17).
4. The embedded track structure of the high-speed railway according to claim 1, characterized in that the base (10a) of the inclined handle (10b) of the track adjusting member is fixed on the bottom of the two sides of the track adjusting groove (6) through the anchor bolt (15) in a way that: the anchor bolt (15) passes through the transverse strip-shaped through hole on the base (10a) of the rail adjusting piece and is in threaded connection with the sleeve (18) embedded at the bottom of the rail adjusting groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378541.XA CN112431071A (en) | 2020-12-01 | 2020-12-01 | Embedded track structure of high-speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378541.XA CN112431071A (en) | 2020-12-01 | 2020-12-01 | Embedded track structure of high-speed railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112431071A true CN112431071A (en) | 2021-03-02 |
Family
ID=74697596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378541.XA Pending CN112431071A (en) | 2020-12-01 | 2020-12-01 | Embedded track structure of high-speed railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112431071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508004A (en) * | 2022-03-22 | 2022-05-17 | 中铁二院工程集团有限责任公司 | Structure and method convenient for ballastless track lifting deformation treatment |
| CN116397465A (en) * | 2023-05-05 | 2023-07-07 | 广州地铁设计研究院股份有限公司 | Embedded continuous support turnout |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202298374U (en) * | 2011-10-29 | 2012-07-04 | 青岛科而泰环境控制技术有限公司 | Rail fixing device with vertical orientation |
| CN105256669A (en) * | 2015-09-30 | 2016-01-20 | 成都市新筑路桥机械股份有限公司 | Embedded track system used in tunnel |
| CN207419162U (en) * | 2017-11-15 | 2018-05-29 | 成都市新筑路桥机械股份有限公司 | A kind of novel embedded continuous supporting ballastless track structure convenient for construction and maintenance |
| JP2019143443A (en) * | 2018-02-23 | 2019-08-29 | 日本軌道工業株式会社 | Track structure and track construction method |
| CN213978382U (en) * | 2020-12-01 | 2021-08-17 | 中国国家铁路集团有限公司 | Embedded track for high-speed railway |
-
2020
- 2020-12-01 CN CN202011378541.XA patent/CN112431071A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202298374U (en) * | 2011-10-29 | 2012-07-04 | 青岛科而泰环境控制技术有限公司 | Rail fixing device with vertical orientation |
| CN105256669A (en) * | 2015-09-30 | 2016-01-20 | 成都市新筑路桥机械股份有限公司 | Embedded track system used in tunnel |
| CN207419162U (en) * | 2017-11-15 | 2018-05-29 | 成都市新筑路桥机械股份有限公司 | A kind of novel embedded continuous supporting ballastless track structure convenient for construction and maintenance |
| JP2019143443A (en) * | 2018-02-23 | 2019-08-29 | 日本軌道工業株式会社 | Track structure and track construction method |
| CN213978382U (en) * | 2020-12-01 | 2021-08-17 | 中国国家铁路集团有限公司 | Embedded track for high-speed railway |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508004A (en) * | 2022-03-22 | 2022-05-17 | 中铁二院工程集团有限责任公司 | Structure and method convenient for ballastless track lifting deformation treatment |
| CN116397465A (en) * | 2023-05-05 | 2023-07-07 | 广州地铁设计研究院股份有限公司 | Embedded continuous support turnout |
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