CN203938939U - A kind of track traffic flush type track - Google Patents

Abstract

The utility model belongs to the technical field of rail traffic and provides a buried track for rail traffic. A proposed buried track for rail transit includes track foundation (9), road foundation (8), rail (1) and rail fasteners; the rail bottom of the rail (1) provided with rail fasteners is provided with rail The lower elastic backing plate (11); a cushion layer (5) is arranged between the adjacent elastic backing plates (11) under the rail; the rail bottom of the rail (1) and the under-rail elastic backing plate (11) . A rail bottom elastic sleeve (4) is arranged between the rail bottom of the rail (1) and the cushion layer (5), and the rail bottom elastic sleeve (4) is continuously laid along the rail laying direction and covered on the on the rail bottom of the rail (1). The utility model improves the track sealing and insulating effects, reduces the construction difficulty and improves the operation efficiency.

Description

A buried track for rail transit

technical field

The utility model belongs to the technical field of rail transit, in particular to a buried track for rail transit.

Background technique

With the development of urban traffic, especially the diversified development of rail traffic, rail traffic has been integrated into all aspects of the city, and even rail vehicles (such as trams) appear on urban roads. This kind of track system shares the right of way with road traffic vehicles. The track covering layer is very rigid, and the track surface is flush with the road surface. Once cracking occurs, it will affect the passage of itself and other vehicles. Therefore, the track system is required to have better Elasticity; In addition, since rail vehicles pass through the city, in order to provide convenience for people, they must pass through residential areas, hospitals, government agencies and other areas, and it is necessary to strictly control the transmission of vibration and noise generated by wheel-rail impact to the surrounding area when the train is running. The track is subjected to vibration and noise reduction treatment. The currently known technology is to install elastic fillers on the outside of the rails to form an elastic transition between the rails and the rigid road surface, and has the function of vibration and noise reduction, such as a structure for wrapping rails disclosed in patent US1771079A, and patent EP0854234A1 A structure for wrapping rails disclosed in , and for example, the patent with publication number CN101052766A discloses a similar structure for wrapping rails.

At present, rail vehicles mainly use clean energy. Referring to the subway system, DC traction is used for power supply, which is energy-saving, environmentally friendly, and low in cost. However, the direct current system also brings about the problem of stray current corrosion. For every 100km track extension, the annual loss due to corrosion is about millions. In the construction of buried track, the problem of stray corrosion is more serious because the track is embedded in the road foundation. In order to prevent the track from being eroded by the surrounding environment and reduce the service life, and to prevent the stray current from the track from eroding and breaking the surrounding foundation and metal components in the building, the sealing and insulation of the track is a problem that needs to be solved; considering the environmental requirements of urban rail transit , The vibration and noise reduction treatment of the buried track is also a problem that needs to be solved.

The rail fastener supports and buckles the rail at the bottom of the rail, and an elastic pad under the rail is arranged between the bottom of the rail and the backing plate of the fastener. Rail fasteners have the characteristics of stable fastening pressure, good gauge maintenance ability, and convenient maintenance and repair. They can effectively ensure driving safety and are widely used. Rail fasteners can usually be divided into iron backing type fasteners and pre-embedded fasteners; among them, iron backing type fasteners are usually composed of fastener backing plate, under-rail elastic backing plate, under-board underlayment, elastic strip, insulating rail Composed of distance blocks; pre-embedded fasteners usually consist of pre-embedded iron seats, gauge blocks, and spring bars, and the pre-embedded iron seats are pre-embedded in the track foundation, as shown in Figure 7 and Figure 8.

The wrapping device on the outside of the rail mentioned in the above three patents faces the butt joint with the fastener at the node of the rail fastener and the sealing of the joint, especially the gap between the wrapping device at the bottom of the rail and the elastic backing plate under the rail. Butt joint sealing is difficult to achieve, the reasons are: (1) When the train is running, the rails undergo dynamic deformation and vibration, and the joints are cracked under force; (2) During construction and installation, the space between the rail bottom and the sub-rail foundation is very small, It is difficult to carry out the sealing operation, the construction is difficult, and the progress of the project is slow.

Utility model content

The purpose of the utility model is to propose a buried track for rail transit, so that it can solve the problems existing in the application of the prior art, improve the sealing and insulation effects of the track, reduce the difficulty of construction, and improve the operation efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions:

An embedded track for rail transit, the embedded track includes a track foundation, a road foundation, rails and rail fasteners; the road foundation is arranged on the track foundation; the road foundation is laid with Rail; Filling body I and Filling body II are respectively arranged between the two sides of the rail and the road foundation; the rail fasteners are arranged at intervals along the laying direction of the rail; The bottom is provided with an elastic pad under the rail; a cushion layer is arranged between two adjacent elastic pads under the rail, that is, the cushion layer is arranged at intervals, and the cushion layer is located between two adjacent Between the under-rail elastic backing plates; between the rail bottom of the rail and the under-rail elastic backing plate, between the rail bottom of the rail and the cushion layer, a rail bottom elastic sleeve is arranged, and the rail bottom elastic sleeve is along the The steel rail is continuously laid in the laying direction and covered on the rail bottom of the steel rail.

The top surface of the steel rail is on the same plane as the pavement on the upper part of the road foundation or the base surface of the green belt.

The top surface of the steel rail is higher than the road pavement or green belt base surface on the upper part of the road foundation.

The upper surface of the filling body I and the filling body II is lower than the top surface of the rail, and an elastic connecting body is arranged in the gap between the upper surface of the filling body I and the filling body II and the top surface of the rail, Moreover, the elastic connecting body is embedded between the steel rail, paved road surface and road foundation, and plays the roles of sealing, waterproofing and insulation.

The elastic connecting body is made of non-metallic material, and the non-metallic material for preparing the elastic connecting body is rubber or polyurethane or plastic or asphalt or rubber-plastic blend.

The upper surfaces of the filling body I and the filling body II are on the same plane as the top surface of the rail.

The rail bottom elastic sleeve is made of non-metallic material, which is rubber or plastic or polyurethane or rubber-plastic blend.

The cushion pad layer is made of non-metallic material, and the cushion pad layer and the rail bottom elastic sleeve are connected as a whole by bonding or buckling.

Both the filling body I and the filling body II are made of non-metallic material, and the non-metallic material is rubber or plastic or a rubber-plastic blend.

The rail fastener includes a fastener backing plate, an elastic strip and an insulating gauge block; the rail is placed on the fastener backing plate, and an elastic pad under the rail is set between the bottom of the rail and the fastener backing plate The insulating gauge block is arranged at the rail feet on both sides of the rail; one end of the elastic bar is connected to the elastic bar mounting seat on the backing plate of the fastener, and the other end is pressed on the rail through the insulating gauge block; The lower part of the fastener backing plate is also provided with an underlayment layer.

The rail fastener has a fastener protective cover.

The utility model proposes a buried track for rail transit, which adopts the above-mentioned technical scheme and has the following advantages:

(1) The rail bottom elastic sleeve is laid continuously along the rail without docking with other components or other materials. It is connected with the under-rail elastic backing plate, fastener backing plate, and cushion layer in the embedded track, and with the filling body I, The combination of the filling body II and the elastic connecting body realizes the wrapping, sealing and insulation of the rail, effectively prevents the surrounding water, acid and alkali from corroding the rail, and inhibits the stray current of the rail from affecting the surrounding underground buildings and metal structures. Galvanic corrosion; the elastic sleeve at the bottom of the rail is laid continuously, and it can be pre-installed on the rail in the factory, which reduces the amount of operation on the construction site and improves the construction efficiency.

(2) The road foundation has relatively high rigidity. In order to avoid direct contact between the road foundation and the rail bottom elastic sleeve; a cushion layer made of non-metallic materials is installed at the bottom of the rail bottom elastic sleeve, and the cushion layer is made according to a certain process. It is very soft and has extremely low stiffness. The cushion layer is in direct contact with the road foundation, hardly adding extra stiffness, and can give full play to the elastic effect of the fastener.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the node of the rail fastener in Embodiment 1 of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the nodes of the non-rail fasteners in Embodiment 1 of the utility model.

Fig. 3 is a schematic diagram of the overall structure at the node of the rail fastener in Embodiment 2 of the present utility model.

Fig. 4 is a schematic diagram of the overall structure of the nodes of the non-rail fasteners in Embodiment 2 of the utility model.

Fig. 5 is a schematic diagram of the overall structure at the node of the rail fastener in Embodiment 3 of the present invention.

Fig. 6 is a schematic diagram of the overall structure of the nodes of the non-rail fasteners in Embodiment 3 of the present invention.

Fig. 7 is a schematic diagram of an iron pad type fastener.

Fig. 8 is a schematic diagram of the pre-embedded iron seat.

Fig. 9 is a schematic diagram of the overall structure at the nodes of the pre-embedded fastener in Embodiment 4 of the present utility model.

In the figure: 1. Rail, 2. Filler I, 3. Filler II, 4. Rail bottom elastic sleeve, 5. Cushion layer, 6. Elastic connector, 7. Pavement, 8. Road foundation, 9 , track foundation, 10, insulating gauge block, 11, elastic backing plate under the rail, 12, fastener backing plate, 13, elastic strip, 14, underlayment under the board, 15, fastener protective cover, 16, green belt foundation noodle.

Detailed ways

The utility model will be further described in conjunction with the accompanying drawings and specific embodiments.

Example 1:

As shown in Fig. 1 and Fig. 2, a kind of embedded track for rail transit, described embedded track includes track foundation 9, road foundation 8, rail 1 and rail fastener; described road foundation 8 sets On the track foundation 9; a steel rail 1 is laid in the road foundation 8; a filling body I2 and a filling body II3 are respectively arranged between the two sides of the steel rail 1 and the road foundation 8; the upper part of the road foundation 8 is laid Road pavement 7; the rail fasteners are arranged at intervals along the laying direction of the rail 1; the rail bottom of the rail 1 provided with the rail fasteners is provided with an under-rail elastic backing plate 11; two adjacent rail under-rails A buffer pad layer 5 is arranged between the elastic pads 11, that is, the buffer pad layers 5 are arranged at intervals, and the described buffer pad layer 5 is located between two adjacent elastic pads 11 under the rail; The rail bottom of the rail 1 is covered with a rail bottom elastic sleeve 4 laid continuously along the rail laying direction, and the rail bottom elastic sleeve 4 is located on the rail bottom of the rail 1 and the elastic backing plate 11 under the rail, the rail 1 between the rail bottom and the buffer cushion layer 5; the rail bottom elastic sleeve 4 covering the rail bottom is in close contact with the filler I2 and filler II3 arranged on both sides of the rail, forming a seamless wrapping of the rail structure to realize the sealing and insulation of the rail; the two ends in the width direction of the cushion layer 5 wrap the two ends in the width direction of the rail bottom elastic sleeve; in this embodiment, the top surface of the rail 1 and the upper part of the road foundation The road pavement 7 is on the same plane; the upper surface of the filling body I2 and the filling body II3 is lower than the top surface of the rail, between the upper surface of the filling body I2 and the filling body II3 and the top surface of the rail 1 The elastic connecting body 6 is arranged in the gap, and the elastic connecting body 6 is embedded between the rail 1, the paved road surface 7 and the road foundation 8, and plays the role of sealing, waterproofing and insulation; the elastic connecting body The body 6 is made of a non-metallic material, and the non-metallic material for preparing the elastic connector is rubber or polyurethane or plastic or asphalt or a rubber-plastic blend; the elastic connector 6 can be cast-in-place, and has a Elasticity plays the role of sealing, waterproofing and insulation, and forms an elastic transition between the steel rail 1 and the rigid road.

There are many structures of the rail fastener 9 and they are mature technical structures in the prior art, so no further explanation is given here; in this embodiment, the rail fastener is an iron backing plate type fastener, including Backing plate 12, spring bars 13 and insulating gauge block 10; the rail 1 is placed on the fastener backing plate 12, and the elastic backing plate 11 under the rail is arranged between the rail bottom of the rail 1 and the fastener backing plate 12 One end of the elastic bar 13 is connected to the elastic bar mounting seat on the fastener backing plate 12, and the other end is buckled and pressed on the rail 1 through the insulating gauge block 10; the lower part of the fastener backing plate 12 is also provided with a plate The lower cushion layer 14; the rail fasteners are fixed on the track foundation 9 by anchor bolts; the fastener protection caps 15 are arranged on both sides of the rail, and the fastener protection caps 15 anchor the fastener backing plate, elastic strip, insulating rule block, anchor The bolts are covered to prevent the entry of sand, gravel and sundries.

Example 2:

As shown in Figures 3 and 4, the main structure of this embodiment is the same as that of Embodiment 1. In this embodiment, the upper surfaces of the filler I2 and the filler II3 are on the same surface as the top surface of the rail 1 and the pavement 7. in plane.

Example 3:

As shown in Figures 5 and 6, the main structure of this embodiment is the same as that of Embodiment 1. In this embodiment, the top of the road foundation is the green belt base surface 16, and the top surface of the rail 1 is higher than the top of the road foundation. Green belt base surface 16; the upper surface of the filling body I2 is higher than the green belt base surface, and the upper surface of the filling body II3 is on the same plane as the green belt base surface 16; or, the upper surface of the filling body I2, filling The upper surface of the body II3 is higher than the base surface of the green belt; or, the upper surface of the filling body I2 and the upper surface of the filling body II3 are on the same plane as the base surface of the green belt; this embodiment is applicable to the green belt in the section where the track passes , sidewalks and other areas that do not require car traffic.

In the above embodiments, the rail bottom elastic sleeve 4 is made of non-metallic material, such as rubber or plastic or polyurethane or a rubber-plastic blend.

The cushion layer 5 is made of non-metallic material, which is rubber or plastic or polyurethane or rubber-plastic blend, and the cushion layer and the elastic sleeve of the rail bottom are bonded or buckled. connected as a whole.

Both the filling body I2 and the filling body II3 are made of non-metallic material, and the non-metallic material is rubber or polyurethane or plastic or rubber-plastic blend.

Example 4

As shown in Figure 8 and Figure 9, the main structure of this embodiment is the same as that of Embodiment 1. In this embodiment, embedded fasteners are used to fix the rail, and the structure of embedded fasteners is a mature technology in the prior art. , without further explanation here.

Claims (7)

1. a track traffic flush type track, described flush type track includes track foundation (9), road basis (8), rail (1) and rail fastening; Described road basis (8) is arranged on track foundation (9); In described road basis (8), be equipped with rail (1); Between the both sides of described rail (1) and road basis (8), be respectively arranged with obturator I(2) and obturator II (3); Described rail fastening is spaced a plurality of along rail (1) laying direction; At the flange of rail that is provided with the rail of rail fastening (1), resilient sleeper-bearing under rail (11) is set; Under adjacent two described rails, between resilient sleeper-bearing (11), be provided with cushion (5), described cushion (5) interval arranges, and described cushion (5) is positioned under adjacent two described rails between resilient sleeper-bearing (11); It is characterized in that: under the flange of rail of described rail (1) and rail, between the flange of rail of resilient sleeper-bearing (11), described rail (1) and cushion (5), be provided with flange of rail resilient sleeve (4), described flange of rail resilient sleeve (4) is along steel rail laying direction continuous laying and be coated on the flange of rail of described rail (1).

2. a kind of track traffic flush type track according to claim 1, is characterized in that: the paving (7) on the end face of described rail (1) and top, road basis or greenbelt base surface (16) are at grade.

3. a kind of track traffic flush type track according to claim 1, is characterized in that: the end face of described rail (1) is higher than paving (7) or the greenbelt base surface (16) on top, road basis.

4. a kind of track traffic flush type track according to claim 1, it is characterized in that: described obturator I(2) and the upper surface of obturator II (3) lower than the end face with rail (1), at described obturator I(2) and the upper surface of obturator II (3) and the end face of rail (1) between nonrigid connector (6) is set in the space that has, and described nonrigid connector (6) is embedded between rail (1) and the road surface of mating formation (7) and road basis (8).

5. a kind of track traffic flush type track according to claim 1, is characterized in that: described obturator I(2) and the end face of the upper surface of obturator II (3) and rail (1) at grade.

6. a kind of track traffic flush type track according to claim 1, is characterized in that: described rail fastening includes fastener base plate (12), spring (13) and Insulation rail distance keeper (10); It is upper that described rail (1) is placed on fastener base plate (12), and resilient sleeper-bearing under rail (11) is being set at the bottom of Rail and between fastener base plate (12); One end of described spring (13) is connected with the spring mount pad on fastener base plate (12), and the other end is withheld on rail (1) by Insulation rail distance keeper (10); The bottom of described fastener base plate (12) is also provided with plate underlayer (14).

7. a kind of track traffic flush type track according to claim 1, is characterized in that: described rail fastening is provided with fastener protective cover (15).