CN216688836U - Level crossing transition zone tramcar track structure - Google Patents

Abstract

The utility model relates to the technical field of matching devices of prefabricated walls, in particular to a tramcar track structure in a transition area of a level crossing, which is characterized in that: and a high-elasticity self-adaptive asphalt mixture block is filled between the pavement layer and the steel rail, the high-elasticity self-adaptive asphalt mixture block is arranged above the pavement layer, and the high-elasticity self-adaptive asphalt mixture block is used as a buffering energy-absorbing transition section of the pavement layer. The utility model has the advantages that: the problems of cracking, delaminating, slipping, rutting and the like of the tramcar track in the transition area of the level crossing are solved, and the high flexibility is realized; self-adapting; high asphalt dosage; smoothly connecting; high-efficiency waterproof; can be repaired together with the connected road surface; maintenance is free; the service life is long; the traffic is fast; easy maintenance.

Description

Level crossing transition zone tramcar track structure

Technical Field

The utility model relates to the technical field of road pavement, in particular to a tramcar track structure in a transition area of a level crossing.

Background

The tramcar has the obvious advantages of low construction cost, small construction difficulty, high safety coefficient, high environmental protection coefficient, capability of commonly using lanes and the like, and becomes the best choice for urban rail transit modes. However, the conventional tramcar track in the transition area of the level crossing is generally laid by directly contacting a steel rail with an asphalt pavement, so that the following problems are caused: the steel rail and the road have permanent deformation at the joint caused by differential settlement; the train causes the vibration of the steel rail when in operation, which causes the dynamic deformation of the road surface; the joint of the steel rail and the road has poor settlement, so that the social vehicles crossing the intersection form impact load when passing through, further aggravate diseases and the like. This can lead to cracking, delamination, slippage, rutting, etc., which is very aesthetically disturbing, making the quality of the tram road look very poor and seriously affecting the image of the city.

Disclosure of Invention

The utility model aims to provide a tramcar track structure in a transition area of a level crossing according to the defects of the prior art, and the problems of cracking, delaminating, slipping, rutting and the like of the tramcar track in the transition area of the level crossing are effectively solved by arranging a high-elastic self-adaptive asphalt mixed block serving as a buffering and energy-absorbing transition section between a pavement layer and a steel rail for connection.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a level crossing transition zone tram track structure, includes roadbed layer and pavement layer, the pavement layer is laid roadbed layer's top, roadbed layer with the same position of pavement layer is openly equipped with logical groove it is provided with rail, its characterized in that to lead to the inslot: and a high-elasticity self-adaptive asphalt mixture block is filled between the pavement layer and the steel rail, the high-elasticity self-adaptive asphalt mixture block is arranged above the pavement layer, and the high-elasticity self-adaptive asphalt mixture block is used as a buffering energy-absorbing transition section of the pavement layer.

And filling a rail top sealant into a gap between the upper part of the high-elastic self-adaptive asphalt mixture block and the top of the steel rail.

The steel rail is arranged in the through groove through a sleeper.

The roadbed layer is a concrete layer.

The pavement layer is an asphalt surface layer.

The width of the high-elasticity self-adaptive asphalt mixture block is 20 cm.

When the height of the high-elastic self-adaptive asphalt mixture block is more than 10cm, a layered compaction structure with the thickness of each layer being less than or equal to 40mm is adopted.

The utility model has the advantages that:

(1) high flexibility: flexible high-elastic asphalt mixture is formed on two sides of the rigid track to absorb the impact load of the vehicle, absorb energy and reduce noise;

(2) self-adaptation: the telescopic quantity of 50mm (+/-25 mm) can be met, and a complex metal mechanical device is not needed;

(3) high asphalt dosage: the consumption of the asphalt is more than 10%, and the asphalt has excellent flexibility and fatigue performance;

(4) smooth joining: the structure is connected smoothly, the automobile runs stably without noise, and wheels do not slip;

(5) high-efficiency waterproofing: the water seepage at the gap position is ensured, and the water damage and corrosion are prevented;

(6) can be repaired together with the connected road surface: before pavement repair or re-paving construction, the expansion joint does not need to be removed in advance, and the expansion joint can be milled and removed together with the surrounding surface and then paved and repaired together;

(7) maintenance-free: a complex mechanical anchoring structure is not needed, so that the mechanical device is not replaced or sundry cleaning work is not carried out due to the abrasion of the mechanical device;

(8) The service life is long: the mixture is firm and stable, can resist the impact of traffic vehicles, and does not generate cracks, chaps and crumbles;

(9) the traffic is fast: the construction can be carried out without breaking, the maintenance time is short, and the vehicle can be communicated within 1 to 3 hours according to the environmental temperature;

(10) easy maintenance: the device can be maintained quickly without breaking, and has little influence on traffic.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1, the symbols 1-6 in the figure are respectively expressed as: the concrete layer 1, the asphalt surface layer 2, the steel rail 3, the high-elastic self-adaptive asphalt mixed material block 4, the rail top sealant 5 and the sleeper 6.

Example (b): as shown in fig. 1, the tramcar track structure at the transition area of the level crossing in this embodiment includes a concrete layer 1 as a road base layer and an asphalt surface layer 2 as a road surface layer, wherein the asphalt surface layer 2 is laid on the concrete layer 1. The strength, the stability and the durability of the road can be effectively guaranteed by selecting the concrete layer 1 with high strength as a road base layer, and the surface smoothness of the road can be guaranteed by selecting the asphalt surface layer 2 as a road surface layer, so that the driving comfort is improved.

As shown in fig. 1, a through groove is formed at the same position of the concrete layer 1 and the asphalt surface layer 2, that is, at the designed position of the steel rail, and the through groove penetrates through the concrete layer 1 and the asphalt surface layer 2. A steel rail 3 is arranged in the through groove, and sleepers 6 are arranged on two sides of the steel rail 3, so that the steel rail 3 is limited and fixed in the through groove, and the rail head part of the steel rail 3 for driving is ensured to be exposed outside.

As shown in fig. 1, a high-elasticity adaptive asphalt mixture block 4 is arranged between the asphalt surface layer 2 and the steel rail 3, and the high-elasticity adaptive asphalt mixture block 4 is laid above the concrete layer 1 and on both sides of the steel rail 3 along the line direction of the steel rail 3. The high-elasticity self-adaptive asphalt mixture block 4 is filled between the asphalt surface layer 2 and the steel rail 3 to serve as a buffering and energy-absorbing transition section between the asphalt surface layer 2 and the steel rail 3, so that the vibration of the steel rail caused by the train running on the steel rail 3 is effectively buffered and energy-absorbed, and the dynamic deformation of the asphalt surface layer 2 is avoided. The upper surface of high-elastic self-adaptation pitch mixture piece 4 and the upper surface parallel and level of pitch surface course 2 to guarantee the surface smoothness of road.

In this embodiment, the high-elastic adaptive asphalt mixture block is formed by hot melt mixing of a high-elastic asphalt cement, an aggregate and the like, has good flexibility and elastoplasticity, and can adapt to the expansion amount within a structure range of 50mm (+ -25 mm). The performance requirements of the high-elasticity asphalt cement are shown in the following table 1:

The grading of the aggregate is shown in table 2 below:

the technical requirements of the high-elasticity self-adaptive asphalt mixture block 4 are shown in the following table 3:

as shown in figure 1, rail top sealant 5 is filled between the top of the steel rail 3 and the upper part of the high-elasticity self-adaptive asphalt mixture block 4. The rail top sealant 5 is a sealing material which deforms along with the shape of a sealing surface, is not easy to flow, has certain cohesiveness, has the effects of leakage prevention, water prevention, vibration prevention, sound insulation, heat insulation and the like, and is an adhesive used for filling a gap between the upper part of the high-elasticity self-adaptive asphalt mixture block 4 and the top of the steel rail 3 to play a role in sealing.

The embodiment can effectively solve the problems of cracking, delaminating, slipping, rutting and the like by using the high-elasticity self-adaptive asphalt mixture block 4 and the rail top sealant 5 in a combined manner.

In the specific implementation of the embodiment, the method comprises the following construction steps:

(1) when the existing level crossing is reconstructed, a grooving construction line (the width of each of two sides is 20cm, namely the width of the high-elastic self-adaptive asphalt mixture block 4 on one side is 20 cm) is sent out according to the side line of the rail 3, the two sides are ensured to be parallel, cutting is carried out along the construction line, and the cutting depth is the paving depth of the asphalt surface layer 2.

When the new construction of the level crossing is carried out, the concrete layer 1 and the asphalt surface layer 2 do not need to be cut if the space is reserved on the road surface. Through grooves for installing steel rails 3 are formed in the concrete layer 1 and the asphalt surface layer 2, and the steel rails 3 can be installed inside the steel rails 3 through sleepers 6.

(2) And removing asphalt floating dust and the like in the notch.

(3) Antifouling adhesive tape paper is stuck on the two side surfaces of the groove opening, and special adhesive layer oil is smeared on the two sides and the bottom of the groove opening.

(4) Pouring the high-elasticity self-adaptive asphalt mixture in the notch, and rolling and compacting by using a road roller, if the depth of the notch is more than 10cm, adopting a layered compaction (the thickness of each layer is less than or equal to 40 mm) measure to ensure the compactness of the high-elasticity self-adaptive asphalt mixture during pouring, adopting a flat plate compactor to tamp the inner layer due to space limitation, and adopting a small steel wheel road roller to tamp the final surface layer.

(5) After the last layer of the high-elasticity self-adaptive asphalt mixture is compacted, a flowing high-elasticity asphalt cement (which can be heated by an on-site heating device) is poured into the surface layer so as to form a dark appearance and an asphalt film protective layer outside the high-elasticity self-adaptive asphalt mixture, so that the flexibility of the elastomer is increased, and a high-elasticity self-adaptive asphalt mixture block 4 is formed.

(6) And (4) carrying out troweling treatment on the surface of the high-elastic self-adaptive asphalt mixed material block 4, tearing off the antifouling adhesive tape, maintaining in due time, and finally cooling and then opening the vehicle. Before the vehicle is started, rail top sealant 5 is filled between the top of the steel rail 3 and the upper part of the high-elastic self-adaptive asphalt mixed material block 4.

In the construction process, the temperature of the high-elasticity self-adaptive asphalt mixture block 4 is strictly controlled to be between 170 ℃ and 220 ℃. If the traffic is opened in advance, the surface is washed and cooled by water, the traffic can be opened when the temperature of the material is reduced to below 50 ℃, or a layer of single-grain-diameter basalt with the diameter of 3-5mm is uniformly scattered on the surface to prevent the wheel from being stuck by the high-elasticity asphalt cement with complete cooling. After the construction is finished, the surface is smooth and smooth, no obvious concave-convex phenomenon exists at the joint, and all parts of the high-elasticity self-adaptive asphalt mixture are firmly bonded without any cracks.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.

Claims (6)

1. The utility model provides a level crossing transition zone tram track structure, includes roadbed layer and pavement layer, the pavement layer is laid roadbed layer's top, roadbed layer with the same position of pavement layer is openly equipped with logical groove it is provided with rail, its characterized in that to lead to the inslot: and a high-elasticity self-adaptive asphalt mixture block is filled between the pavement layer and the steel rail, the high-elasticity self-adaptive asphalt mixture block is arranged above the pavement layer, and the high-elasticity self-adaptive asphalt mixture block is used as a buffering energy-absorbing transition section of the pavement layer.

2. The tram track structure at the transition area of a level crossing according to claim 1, characterized in that: and filling a rail top sealant into a gap between the upper part of the high-elastic self-adaptive asphalt mixture block and the top of the steel rail.

3. The tram track structure at the transition area of a level crossing according to claim 1, characterized in that: the roadbed layer is a concrete layer.

4. The tram track structure at the transition area of a level crossing according to claim 1, characterized in that: the pavement layer is an asphalt surface layer.

5. The tram track structure at the transition area of a level crossing according to claim 1, characterized in that: the width of the high-elasticity self-adaptive asphalt mixture block is 20 cm.

6. The tram track structure at the transition area of a level crossing according to claim 1, characterized in that: when the height of the high-elastic self-adaptive asphalt mixture block is more than 10cm, a layered compaction structure with the thickness of each layer being less than or equal to 40mm is adopted.

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