CN215210245U

CN215210245U - High-stability prefabricated composite vibration damping track structure

Info

Publication number: CN215210245U
Application number: CN202120467974.6U
Authority: CN
Inventors: 宫寅; 余韬; 刘泽宇; 沈海宏; 白楷
Original assignee: China Railway Shanghai Design Institute Group Co Ltd
Current assignee: China Railway Shanghai Design Institute Group Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-12-17
Anticipated expiration: 2031-03-04

Abstract

The utility model belongs to the technical field of the rail engineering technique and specifically relates to a prefabricated compound damping track structure of high stability, its characterized in that: the composite vibration damper comprises a prefabricated track plate, a composite vibration damper, a sealing strip and a base, wherein the bottom surface of the prefabricated track plate and the top surface of the base are respectively provided with an upper embedded limiter and a lower embedded limiter, the upper embedded limiter and the lower embedded limiter are corresponding in position, and the composite vibration damper is fixedly arranged between the upper embedded limiter and the lower embedded limiter; the prefabricated track plate is supported on the base through the composite vibration absorber, and the sealing strip is arranged at the outer side of a gap between the prefabricated track plate and the base. The utility model has the advantages that: the requirement of vibration reduction and noise reduction of the rail transit overhead line is met, the requirement of high stability of a vibration reduction rail structure is met, the requirement of prefabrication, modularization and mechanization of the rail structure is met, and the requirement of simple maintenance and replacement of the vibration reduction rail in the operation period is met.

Description

High-stability prefabricated composite vibration damping track structure

Technical Field

The utility model belongs to the technical field of the track engineering technique and specifically relates to a prefabricated compound damping track structure of high stability.

Background

With the vigorous development of domestic rail transit projects and the traffic construction of metropolitan circles in fourteen five seasons, more and more rail transit projects adopt overhead lines in suburbs; the social requirement on environmental vibration protection is higher and higher; meanwhile, the country advocates green buildings and encourages the development of prefabrication, modularization and mechanization of the construction industry. At present, the measures of medium vibration reduction of the rail engineering of the rail transit overhead line are mostly a steel spring floating slab track bed and a vibration reduction track bed, a vibration isolator of the steel spring floating slab is connected with a base by a positioning pin, and the stability is poor; the damping performance of the damping cushion ballast bed is difficult to meet the special damping requirement, and the maintenance, the repair and the replacement are difficult; a rail structure with high-level vibration damping performance, good stability and convenient maintenance and repair is needed.

Disclosure of Invention

The utility model aims at providing a prefabricated compound damping track structure of high stability according to above-mentioned prior art's is not enough, through the design of compound shock absorber and mounting structure, satisfies the requirement that the track traffic engineering damping was fallen and is made an uproar, satisfies the requirement of track engineering high stability, satisfies the requirement of green building "prefabrication, modularization, mechanization", satisfies the simple and convenient requirement of maintenance change.

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

the utility model provides a prefabricated compound damping track structure of high stability which characterized in that: the composite vibration damper comprises a prefabricated track plate, a composite vibration damper, a sealing strip and a base, wherein the bottom surface of the prefabricated track plate and the top surface of the base are respectively provided with an upper embedded limiter and a lower embedded limiter, the upper embedded limiter and the lower embedded limiter are corresponding in position, and the composite vibration damper is fixedly arranged between the upper embedded limiter and the lower embedded limiter; the prefabricated track plate is supported on the base through the composite vibration absorber, and the sealing strip is arranged at the outer side of a gap between the prefabricated track plate and the base.

The composite shock absorber comprises a rubber outer wrapping layer, an upper stainless steel plate, a unit spring, damping liquid, a lower stainless steel plate and a rubber convex cone, wherein the rubber outer wrapping layer is provided with a cavity, the upper stainless steel plate and the lower stainless steel plate are arranged inside the cavity of the rubber outer wrapping layer, the unit spring is arranged between the upper stainless steel plate and the lower stainless steel plate, the damping liquid is filled into the cavity, and the rubber convex cone is arranged on the bottom surface of the rubber outer wrapping layer.

The rubber outer wrapping layer and the rubber convex cone are of an integral structure.

The composite shock absorber is in a regular hexagon structure.

And a plurality of composite vibration dampers are uniformly arranged between the prefabricated track plate and the base at intervals.

And the composite shock absorber and the upper and lower embedded limiters form interference fit.

And the peripheries of the upper and lower embedded limiters are respectively welded with a fiber nail.

And a rail bearing platform is arranged above the prefabricated rail plate, and a steel rail is fixedly arranged above the rail bearing platform through a fastener.

The utility model has the advantages that:

1) the track engineering modularization prefabrication and field assembly are realized by manufacturing the prefabricated track plate and assembling the composite shock absorber in a factory.

2) The composite shock absorber realizes the shock absorption effect above the middle-level shock absorption by designing and superposing multiple shock absorption and noise reduction measures of the rubber outer wrapping layer, the upper stainless steel plate, the unit spring, the damping liquid, the lower stainless steel plate and the rubber convex cone.

3) The composite shock absorber is designed into a regular hexagon shape and is in interference fit with the upper embedded limiter and the lower embedded limiter, the prefabricated track plate, the composite shock absorber and the base are accurately positioned, and the high stability of the shock absorbing track is realized.

4) By the construction method from bottom to top, the base, the composite shock absorber, the prefabricated track plate, the fastener and the steel rail are accurately constructed, and the sealing strips are arranged on the edges of the prefabricated track plate and the base, so that the dust prevention in the high-precision construction and operation periods is realized, and the stability of track engineering is ensured.

5) Through the structural design of prefabricated track board and compound shock absorber, operation period accessible jacking prefabricated track board reserves certain space alright take out and change compound shock absorber, has realized that operation period maintenance is changed simply.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a plan view of the composite damper of the present invention;

fig. 3 is a structural section view of the middle prefabricated track plate and the upper pre-buried limiting stopper of the utility model;

FIG. 4 is a cross-sectional view of the structure of the middle base and the lower pre-buried stopper of the present invention;

fig. 5 is a structural section view of the composite damper 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 accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-5, the symbols in the figures are respectively represented as: the steel rail comprises a steel rail 1, a fastener 2, a prefabricated rail plate 3, a composite damper 4, a sealing strip 5 and a base 6; the device comprises an upper embedded stopper 301, a lower embedded stopper 601, a rubber outer wrapping layer 401, an upper stainless steel plate 402, a unit spring 403, damping liquid 404, a lower stainless steel plate 405 and a rubber convex cone 406.

Example (b): as shown in fig. 1, the main body of the high-stability prefabricated composite vibration-damping track structure in this embodiment includes a steel rail 1, a clip 2, a prefabricated track slab 3, a composite vibration damper 4, a sealing strip 5, and a base 6.

As shown in fig. 3 and 4, the precast track slab 3 is a factory precast member, and an upper pre-buried stopper 301 is disposed on a bottom surface thereof, and the upper pre-buried stopper 301 is pre-buried in a prefabricating process of the precast track slab 3. The basement 6 is a concrete cast-in-place member, and a lower embedded limiter 601 is arranged on the top surface of the basement 6 and embedded in the cast-in-place construction of the basement 6. The upper embedded limiter 301 and the lower embedded limiter 601 are in an up-down corresponding structure and are in a uniform concave structure. In order to improve the connection strength between the upper embedded limiter 301 and the prefabricated track slab 3 and the connection strength between the lower embedded limiter 601 and the substrate 6, the peripheries of the upper embedded limiter 301 and the lower embedded limiter 601 are respectively welded with fiber nails; wherein go up pre-buried stopper 301's fine nail embedding inside in prefabricated track board 3 in order to improve joint strength and guarantee to connect stably, likewise, the fine nail embedding of lower pre-buried stopper 601 is inside in order to improve joint strength between the two and guarantee to connect stably simultaneously in basement 6.

As shown in fig. 1, the composite damper 4 is fixedly installed between the upper pre-buried limiter 301 and the lower pre-buried limiter 601, and the composite damper 4, the upper pre-buried limiter 301 and the lower pre-buried limiter 601 form an interference fit, so as to realize the fixed connection between the composite damper 4 and the prefabricated track slab 3 and the base 6. At this time, the precast track slab 3 is supported on the base 6 by the composite damper 4, and damping of the precast track slab 3 is achieved.

As shown in fig. 1 and 2, the composite dampers 4 are uniformly spaced between the prefabricated track slab 3 and the base 6. In the embodiment, as shown in fig. 2, 3 composite vibration dampers 4 are arranged on the same cross section of the bottom of the prefabricated

track slab

3, and 6, 9 or 12 composite vibration dampers 4 can be uniformly arranged on each prefabricated slab. The arrangement position and the number of the composite dampers 4 can be changed according to the damping requirements or the construction design requirements.

As shown in fig. 5, the composite vibration absorber 4 is composed of a rubber outer casing 401, an upper stainless steel plate 402, a unit spring 403, a damping liquid 404, a lower stainless steel plate 405, and a rubber convex cone 406. The rubber outer wrapping layer 401 is provided with a cavity inside, the upper stainless steel plate 402 and the lower stainless steel plate 405 are arranged inside the cavity, the plurality of unit springs 403 are arranged between the upper stainless steel plate 402 and the lower stainless steel plate 405, the damping liquid 404 is filled in the cavity, and the rubber convex cone 406 is arranged at the bottom of the rubber outer wrapping layer 401 and forms an integral structure with the rubber outer wrapping layer and the rubber outer wrapping layer.

When the rubber vibration damper is used, the rubber outer wrapping layer 401 is made of rubber materials and has a vibration damping function; the upper stainless steel plate 402 and the lower stainless steel plate 405 increase the quality of the composite damper 4, improve the damping effect and increase the vertical and horizontal stability; the plurality of unit springs 403 connected in parallel can expand and contract between the upper stainless steel plate 402 and the lower stainless steel plate 405, thereby having a vibration damping function; the damping liquid 404 and the unit spring 403 work in combination to damp the vibration; the rubber convex cone 406 is made of rubber materials and is arranged to be of a cone-shaped structure, and when the rubber convex cone is stressed, the rubber convex cone absorbs vibration through deformation, so that the rubber convex cone has a vibration reduction function. Thus, the composite damper 4 has multiple damping and noise reduction functions, and the damping effect is effectively improved.

As shown in fig. 1, the composite damper 4 has a regular hexagonal structure, which works in conjunction with the upper pre-embedded stopper 301 and the lower pre-embedded stopper 601 to achieve high stability.

As shown in figure 1, the outer side surface of a gap between a prefabricated track bed plate 3 and a base 6 is sealed by a sealing strip 5, so that the influence of garbage entering the prefabricated track bed plate 3 to the stability is avoided.

The top surface of the prefabricated track slab 3 is provided with a rail bearing platform, and the rail bearing platform is fixedly provided with a steel rail 1 through a fastener 2, so that the erection of a track structure is realized.

In practical construction, the present embodiment includes the following steps:

1) the prefabricated track slab 3 is manufactured in a factory, and the position limiter 301 is embedded in the position accurately. And (3) assembling the composite damper 4 in a factory, and assembling the composite damper 4 below the prefabricated track slab 3 to be in interference fit with the upper embedded limiter 301.

2) After the bridge is erected, high-precision measurement is carried out, the central line of the line is located, the position of the lower embedded limiter 601 is further determined, and the substrate 6 is poured.

3) The prefabricated track slab 3 is lifted through the fastener sleeve, the composite shock absorber 4 is aligned to the lower embedded limiter 601, the prefabricated track slab 3 and the composite shock absorber 4 slowly fall down, and high-precision connection is achieved with the lower embedded limiter 601. And installing a steel rail 1 and a fastener 2 on the positioned prefabricated track plate 3, and installing a sealing strip 5 on the prefabricated track plate 3 and the edge of the base 6 to finish construction.

In the embodiment, in specific implementation: the thickness of the prefabricated track plate 3 can be 200-500mm, the width can be 2100-3000mm, and the length can be 3600-6000 mm. The length of the basement 6 is the same as that of the prefabricated track bed plate 3, the width of the basement is 100-200mm larger than that of the prefabricated track bed plate 3, and the thickness of the basement can be 150-200 mm.

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, the description thereof is not repeated herein.

Claims

1. The utility model provides a prefabricated compound damping track structure of high stability which characterized in that: the composite vibration damper comprises a prefabricated track plate, a composite vibration damper, a sealing strip and a base, wherein the bottom surface of the prefabricated track plate and the top surface of the base are respectively provided with an upper embedded limiter and a lower embedded limiter, the upper embedded limiter and the lower embedded limiter are corresponding in position, and the composite vibration damper is fixedly arranged between the upper embedded limiter and the lower embedded limiter; the prefabricated track plate is supported on the base through the composite vibration absorber, and the sealing strip is arranged at the outer side of a gap between the prefabricated track plate and the base.

2. A highly stable prefabricated vibration damping composite track structure as claimed in claim 1, wherein: the composite shock absorber comprises a rubber outer wrapping layer, an upper stainless steel plate, a unit spring, damping liquid, a lower stainless steel plate and a rubber convex cone, wherein the rubber outer wrapping layer is provided with a cavity, the upper stainless steel plate and the lower stainless steel plate are arranged inside the cavity of the rubber outer wrapping layer, the unit spring is arranged between the upper stainless steel plate and the lower stainless steel plate, the damping liquid is filled into the cavity, and the rubber convex cone is arranged on the bottom surface of the rubber outer wrapping layer.

3. A highly stable prefabricated vibration damping composite track structure as claimed in claim 2, wherein: the rubber outer wrapping layer and the rubber convex cone are of an integral structure.

4. A highly stable prefabricated vibration damping composite track structure according to claim 1 or 2, wherein: the composite shock absorber is in a regular hexagon structure.

5. A highly stable prefabricated vibration damping composite track structure as claimed in claim 1, wherein: and a plurality of composite vibration dampers are uniformly arranged between the prefabricated track plate and the base at intervals.

6. A highly stable prefabricated vibration damping composite track structure as claimed in claim 1, wherein: and the composite shock absorber and the upper and lower embedded limiters form interference fit.

7. A highly stable prefabricated vibration damping composite track structure as claimed in claim 1, wherein: and the peripheries of the upper and lower embedded limiters are respectively welded with a fiber nail.

8. A highly stable prefabricated vibration damping composite track structure as claimed in claim 1, wherein: and a rail bearing platform is arranged above the prefabricated rail plate, and a steel rail is fixedly arranged above the rail bearing platform through a fastener.