Shoulder sleeper for urban rail transit

Abstract

The utility model provides a sleeper with shoulders for urban rail transit, which relates to the technical field of rail transit and comprises a sleeper body. The blocking shoulders are arranged at the two ends of the sleeper body, and each blocking shoulder comprises a rail bearing groove located in the middle and blocking tables located at the two ends; the prestressed tendons are embedded in the sleeper main body in the length direction of the sleeper main body; the reinforcing ribs are embedded below the retaining shoulders in the length direction of the sleeper main body and are matched with the cross sections of the retaining shoulders in shape; and the stirrups are bundled at the outer parts of the prestressed tendons and the reinforcing ribs. The sleeper with the retaining shoulders is provided for urban rail transit, the reinforcing ribs matched with the retaining shoulders in shape are arranged in the retaining shoulders, and the reinforcing ribs and the stirrups act together, so that the integrity and the strength of the ends of the sleeper are enhanced, and the transverse stability of a sleeper-fastener system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway track technical field, more particularly in, a city rail traffic is with shoulder sleeper. BACKGROUND

[0002] The cast-in-place long sleeper embedded integral track structure used in the urban rail transit of China mostly adopts the non-shoulder prestressed reinforced concrete long sleeper, which mainly provides the transverse resistance for the fastener system through the anchoring bolt anchored at the end of the sleeper, and the stress is easily concentrated around the bolt under the action of the transverse force due to the limited diameter of the bolt, the stress state of the interior of the end of the sleeper is relatively poor, the transverse resistance performance gradually decreases in the long-term service process, which easily leads to the decrease of the transverse stability of the steel rail and affects the comfort and safety of the train operation. SUMMARY

[0003] The utility model discloses a city rail traffic is with shoulder sleeper to improve above -mentioned problem. In order to realize above -mentioned purpose, the utility model adopts the technical scheme as follows:

[0004] A city rail traffic is with shoulder sleeper, comprising:

[0005] Sleeper main part;

[0006] Shoulder, the shoulder sets up in the both ends of sleeper main part, the shoulder includes the rail slot in the middle and the block table in both ends;

[0007] Prestressed reinforcement, the prestressed reinforcement is buried in the sleeper main part along the length direction of the sleeper main part;

[0008] Reinforcing bar, the reinforcing bar is buried below the shoulder along the length direction of the sleeper main part, and the cross section shape of the shoulder is matched;

[0009] Stirrup, the stirrup is tied in the outside of the prestressed reinforcement and the reinforcing bar.

[0010] Optional, the prestressed reinforcement is arranged in the sleeper main part in two layers, and each layer contains at least two prestressed reinforcements, wherein at least one upper layer prestressed reinforcement is connected with the reinforcing bar.

[0011] Optional, the reinforcing bar includes the concave section in the middle and the upper folded section in both ends, the concave section is matched with the cross section of the rail slot, the upper folded section is matched with the cross section of the block table, and the concave section is at the same height with the upper layer prestressed reinforcement.

[0012] Optional, the rail slot is provided with the mounting hole for mounting the steel rail, and the spiral reinforcement is buried around the mounting hole.

[0013] Optionally, a pre-buried sleeve is arranged in the mounting hole, and a top surface of the pre-buried sleeve is 0-0.5mm lower than a surface of the rail receiving groove.

[0014] Optionally, a distance between the upper folding section and the surface of the shoulder is 25-35mm.

[0015] A distance between the lower concave section and the surface of the rail receiving groove is 50-55mm.

[0016] Optionally, a through-hole is horizontally arranged in the sleeper main body.

[0017] Optionally, a chamfer is arranged at a joint between the rail receiving groove and the shoulder.

[0018] Optionally, the reinforcing rib further comprises an enhanced section extending to a middle part of the sleeper main body, and the enhanced section extends to at least below a middle axis of the sleeper main body.

[0019] Optionally, a length of the sleeper main body is 2200-2300mm.

[0020] The utility model discloses the beneficial effect is:

[0021] The utility model discloses a kind of shoulder rail tie for urban rail transit, reinforcing rib is configured in the shoulder part, which is matched with the shape of shoulder, change wheel rail transverse force transmission mode to lower part structure, wheel rail transverse force is directly transmitted to the concrete shoulder of rail tie, solve the problem that the stress concentration around bolt and the stress state in the end of rail tie is relatively poor due to the limited bolt diameter under the action of transverse force in the existing shoulderless rail tie, can significantly improve the transverse stability of rail tie-fastener system, improve driving safety, comfort, be conducive to inhibiting rail corrugation generation, with wide application value.

[0022] Other features and advantages of the utility model will be described in the subsequent specification, and, partially become obvious from the specification, or be understood by implementing the utility model embodiment. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced to the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other related drawings according to these drawings.

[0024] Figure 1 It is the three-dimensional schematic view of the shoulder rail tie for urban rail transit in the embodiment of the present application.

[0025] Figure 2A reinforcing rib setting schematic diagram in the embodiment of the present application;

[0026] Figure 3 A front view of the rail sleeper with shoulder in the embodiment of the present application for urban rail transit;

[0027] Figure 4 A top view of the rail sleeper with shoulder in the embodiment of the present application for urban rail transit;

[0028] Figure 5 A side view of the rail sleeper with shoulder in the embodiment of the present application for urban rail transit;

[0029] Figure 6 A spiral rib setting schematic diagram in the embodiment of the present application.

[0030] Symbol explanation: 1-rail sleeper body; 2-shoulder; 201-rail bearing groove; 202-shoulder; 3-spiral rib; 4-pre-buried sleeve; 5-pre-stressed rib; 6-hoop rib; 7-reinforcing rib; 701-lower concave section; 702-upper folded section; 703-enhanced section; 8-steel rail; 9-rib hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] The existing prestressed reinforced concrete long sleeper structure without shoulder mainly provides transverse resistance for the fastener system through the anchoring bolt anchored at the end of the sleeper. Due to the limited diameter of the bolt and stress concentration around the bolt under the action of transverse force, the stress state inside the end of the sleeper is relatively poor. In the case of damage or long-term service, the transverse resistance performance significantly decreases, which easily leads to the decrease of rail transverse stability and affects the comfort and safety of train operation. In some cities in China, large-area rail corrugation diseases have occurred in the existing metro network, and relevant research results show that the insufficient transverse resistance performance of the sleeper is one of the causes of the rail corrugation of the metro.

[0034] Referring to Figure 1 and Figure 2 , the embodiment provides a shoulder rail sleeper for urban rail transit, comprising:

[0035] a sleeper main body 1;

[0036] a shoulder 2, which is arranged at both ends of the sleeper main body 1, and comprises a rail bearing groove 201 at the middle part and a shoulder table 202 at both ends;

[0037] a prestressed tendon 5, which is embedded in the sleeper main body 1 along the length direction of the sleeper main body 1;

[0038] a reinforcing bar 7, which is embedded below the shoulder 2 along the length direction of the sleeper main body 1 and matches the cross-sectional shape of the shoulder 2;

[0039] a stirrup 6, which is bundled outside the prestressed tendon 5 and the reinforcing bar 7.

[0040] The traditional sleeper of urban rail transit is a shoulderless structure, and the transverse resistance performance will gradually decrease during long-term service. The application provides a shoulder sleeper structure for urban rail transit. The reinforcing bar 7 matching the shape of the shoulder 2 is arranged in the shoulder 2 part, and the reinforcing bar 7 and the stirrup 6 jointly act to enhance the integrity and strength of the end of the sleeper and improve the transverse stability of the sleeper. The stirrup 6 is arranged at intervals along the length direction of the sleeper, and the stirrup 6 corresponding to the position of the shoulder 2 penetrates into the shoulder 2 to enhance the connection between the shoulder 2 and the lower sleeper main body 1.

[0041] As shown in Figure 5 , as an optional implementation, the prestressed tendon 5 is arranged in two layers in the sleeper main body 1, each layer contains at least two prestressed tendons 5, and at least one prestressed tendon 5 in the upper layer is connected with the reinforcing bar 7. In the embodiment, four prestressed tendons 5 are arranged in each layer, and the prestressed tendons 5 are distributed at equal intervals.

[0042] As shown in Figure 2As shown, as an optional embodiment, the reinforcing rib 7 includes a lower concave section 701 in the middle and upper folded sections 702 at both ends, the lower concave section 701 matches the cross section of the rail groove 201, the upper folded section 702 matches the cross section of the stop platform 202, and the lower concave section 701 is at the same height as the upper layer of the prestressed rib 5.

[0043] As shown, as an optional embodiment, the reinforcing rib 7 includes a lower concave section 701 in the middle and upper folded sections 702 at both ends, the lower concave section 701 matches the cross section of the rail groove 201, the upper folded section 702 matches the cross section of the stop platform 202, and the lower concave section 701 is at the same height as the upper layer of the prestressed rib 5. Figure 2 As shown, as an optional embodiment, the reinforcing rib 7 includes a lower concave section 701 in the middle and upper folded sections 702 at both ends, the lower concave section 701 matches the cross section of the rail groove 201, the upper folded section 702 matches the cross section of the stop platform 202, and the lower concave section 701 is at the same height as the upper layer of the prestressed rib 5.

[0044] Specifically, the distance between the upper folded section 702 and the surface of the stop platform 202 is 25-35 mm; preferably, the distance between the upper folded section 702 near the center of the sleeper main body 1 and the surface of the stop shoulder 2 is 30 mm, and the distance between the upper folded section 702 near the end of the sleeper main body 1 and the surface of the stop shoulder 2 is 25 mm. The distance between the lower concave section 701 and the surface of the rail groove 201 is 50-55 mm, and preferably 53 mm.

[0045] As shown, as an optional embodiment, the rail groove 201 is provided with a mounting hole for mounting the steel rail 8, and a spiral rib 3 is embedded around the mounting hole. The spiral rib 3 is preferably made of low-carbon cold-drawn steel wire, which surrounds the mounting hole to improve the strength of the concrete around the mounting hole. Figure 3 As shown, as an optional embodiment, the mounting hole is provided with a pre-embedded sleeve 4, and the top surface of the pre-embedded sleeve 4 is 0-0.5 mm lower than the surface of the rail groove 201. The pre-embedded sleeve 4 is an insulating threaded sleeve, which is pre-embedded in the sleeper during casting of the sleeper, so that the upper top surface of the pre-embedded sleeve 4 is a certain distance below the surface of the rail groove 201, thereby avoiding the impact of manufacturing errors on the safety of the fastener system.

[0046] Figure 3 As shown, as an optional embodiment, the sleeper main body 1 is provided with a transverse reinforcing hole 9, which is a circular through hole for subsequent steel bar penetration. Figure 5 As an optional embodiment, the connection between the rail groove 201 and the stop platform 202 is chamfered. All corners of the stop shoulder 2 are chamfered, and the rail groove 201 is provided with a certain rail bottom slope, as shown in

[0047] Figure 4 As an optional embodiment, the connection between the rail groove 201 and the stop platform 202 is chamfered. All corners of the stop shoulder 2 are chamfered, and the rail groove 201 is provided with a certain rail bottom slope, as shown in

[0048] Figure 6

[0049] As shown, as an optional embodiment, the sleeper main body 1 is provided with a transverse reinforcing hole 9, which is a circular through hole for subsequent steel bar penetration. Figure 2 ​​​​As an optional embodiment, the reinforcing rib 7 also comprises a reinforcing section 703 extending to the middle of the sleeper main body 1, and the reinforcing section 703 extends at least to below the central axis of the sleeper main body 1. The lower concave section 701 and the upper folded section 702 are both close to the surface of the shoulder 2, and the reinforcing section 703 extends to the bottom of the sleeper main body 1, thereby reinforcing the integrity of the shoulder 2 and the sleeper main body 1 and better dispersing the stress.

[0050] As an optional embodiment, the length of the sleeper main body 1 is 2200-2300 mm. The conventional sleeper length is 2100 mm, and the application lengthens the sleeper in order to enhance the lateral stability of the sleeper-fastener system, and cooperates with the design of the internal reinforcing rib of the sleeper shoulder 2, and the length is preferably 2200 mm.

[0051] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A sleeper with shoulder guard for urban rail transit, characterized in that: include: Sleeper body (1); A shoulder (2), the shoulder (2) being arranged at both ends of the sleeper body (1), the shoulder (2) comprising a rail bearing groove (201) located in the middle and a stop platform (202) located at both ends; Prestressed tendons (5), the prestressed tendons (5) being embedded in the sleeper body (1) along the length direction of the sleeper body (1); A reinforcing rib (7), wherein the reinforcing rib (7) is embedded below the shoulder (2) along the length direction of the sleeper body (1) and matches the cross-sectional shape of the shoulder (2); Stirrups (6), the stirrups (6) are bundled outside the prestressed tendons (5) and the reinforcing tendons (7).

2. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The prestressed tendons (5) are arranged in two layers, upper and lower, within the sleeper body (1), each layer comprising at least two prestressed tendons (5), wherein at least one prestressed tendon (5) in the upper layer is connected to the reinforcing tendon (7).

3. The urban rail transit sleeper with shoulder guard according to claim 2, characterized in that: The reinforcing rib (7) comprises a concave section (701) located in the middle and an upper folding section (702) located at both ends, the concave section (701) matches the cross section of the rail support groove (201), the upper folding section (702) matches the cross section of the stop platform (202), and the concave section (701) and the prestressed rib (5) of the upper layer are located at the same height.

4. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The rail supporting groove (201) is provided with a mounting hole for mounting a steel rail (8), and spiral ribs (3) are buried around the mounting hole.

5. The urban rail transit sleeper with shoulder guard according to claim 4, characterized in that: An embedded sleeve (4) is provided in the installation hole, and the top surface of the embedded sleeve (4) is 0-0.5 mm lower than the surface of the support rail groove (201).

6. The urban rail transit sleeper with shoulder guard according to claim 3, characterized in that: The distance between the upper folding section (702) and the surface of the stop platform (202) is 25-35 mm; The distance between the concave section (701) and the surface of the rail support groove (201) is 50-55 mm.

7. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The sleeper body (1) is provided with reinforcement holes (9) transversely.

8. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The connection between the rail support groove (201) and the stop platform (202) is provided with a chamfer.

9. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The reinforcing rib (7) further comprises a reinforcing section (703) extending towards the middle of the sleeper body (1), and the reinforcing section (703) extends at least to below the central axis of the sleeper body (1).

10. The urban rail transit sleeper with shoulder guard according to claim 1, characterized in that: The length of the sleeper body (1) is 2200-2300 mm.

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