CN113250011A

CN113250011A - Novel subway vibration reduction track structure and vibration absorber device

Info

Publication number: CN113250011A
Application number: CN202110592464.6A
Authority: CN
Inventors: 黄旭东
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-13
Anticipated expiration: 2041-05-28
Also published as: CN113250011B

Abstract

The invention discloses a novel subway vibration reduction track structure and a vibration absorber device, which comprise a pouring type shield tunnel foundation, wherein a track plate is arranged above the shield tunnel foundation, two steel rails which are oppositely arranged are arranged on the track plate, a plurality of rectangular openings for vibration reduction installation are formed in the bottom in the shield tunnel foundation, a foundation base is arranged in each rectangular opening, the foundation base is connected with an upper disc through a main vibration reduction assembly, and the upper disc is connected with the bottom of the track plate through a locking piece. According to the vibration absorber, the prefabricated track plate is placed on the foundation, the main vibration absorption device is installed in the gap between the foundation and the track plate through the assembling holes formed in the prefabricated track plate, and the vibration absorption springs in the main vibration absorption device and the magnetic layer with repulsive magnetism arranged in the vibration absorption springs are enabled to effectively counteract the vibration force of the track plate and the foundation when the vibration generated by the vibration absorption springs and the magnetic layer with repulsive magnetism are adjusted through the nut ring, so that the vibration absorber can be effectively installed while the installation of the track plate is not influenced.

Description

Novel subway vibration reduction track structure and vibration absorber device

Technical Field

The invention relates to the technical field of rail transit vibration reduction, in particular to a novel subway vibration reduction rail structure and a vibration absorber device.

Background

The underground railway is a necessary transportation tool for urban modernization, has the advantages of large transportation volume, high speed, safety, reliability and accurate time, and becomes a feasible measure for solving urban traffic congestion, noise and atmospheric pollution; on the other hand, the influence of vibration generated by the subway on the environment is a problem which is generally regarded by all countries in the world, and the vibration and noise generated during the operation of the subway train are both from the vibration of different frequencies of all structures in the wheel rail system; part of the vibration is diffused in the form of noise through the reflection of air or peripheral structures, and the vibration can be divided into two forms of buffering vibration reduction and isolating vibration reduction according to the vibration reduction form, and the buffering vibration is usually only used for buffering and attenuating the vibration transmitted by the running of a vehicle by using an elastic body on buildings on the upper part of a track, such as a steel rail, a fastener, a sleeper and the like; isolation damping is generally the integral isolation of the track bed from the structural foundation by elastomers, the vibrations transmitted by the vehicle operation. (ii) a

In order to avoid the influence of vibration generated by a steel rail on urban noise, a panel made of sound-absorbing material is often laid in a subway channel to effectively absorb the vibration, but the vibration is very little in effect, the main reason of the vibration generation is vibration caused by frequent contact between the steel rail and a track plate and between the track plate and a foundation, so that the vibration generated by passing of a vehicle on the steel rail is solved from the source, at present, during construction, the track plate is often preset according to a certain specification and then is moved into a tunnel for assembly, the moving space of the track plate in the tunnel is limited, so that vibration-absorbing equipment at the bottom of the track plate is difficult to install, the vibration-absorbing effect between the track plate and the foundation is poor, for example, when the track plate is assembled at a small distance, the connecting joints of the total length of the track are increased, the progress is influenced, and when adjacent tracks are pressed successively, staggered vibration is generated, noise is generated, so a novel subway vibration damping track structure and a vibration absorber device are provided.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a novel subway vibration reduction track structure and a vibration absorber device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the novel subway vibration damping track structure and the vibration absorber device comprise a pouring type shield tunnel foundation, a track plate is arranged above the shield tunnel foundation, the track plate is provided with two steel rails which are oppositely arranged, the bottom in the shield tunnel foundation is provided with a plurality of rectangular openings for vibration reduction installation, a foundation base is arranged in the rectangular opening, the foundation base is connected with an upper disc through a main vibration damping component, the upper disc is connected with the bottom of the track plate through a locking piece, the track plate positioned right below the steel rail is provided with a mounting opening, the mounting hole is internally provided with a mounting ring, the inner side wall of the mounting ring is provided with a threaded mounting layer, the threaded mounting layer is internally connected with stacking discs which are mutually overlapped in a threaded manner, pile up the set bottom and be provided with supplementary damping spare, the equipment mouth of being convenient for installation that is the rectangle setting is seted up to the intensive on the track board.

Preferably, main damping subassembly is including setting up the main damping seat in the foundation bed, it joins in marriage the mouth to have seted up in the main damping seat, the overhead dish is connected with the loading board through the regulating part, a plurality of and the built-in post of joining in marriage mouthful looks adaptation of loading board bottom fixedly connected with, built-in capital portion all is provided with the magnetic layer that magnetism is repulsive with the cooperation mouthful inner wall.

Preferably, the bottom of the bearing plate at the position of the built-in column is provided with a plurality of limiting columns, the main vibration damping seat is provided with a plurality of sliding ports matched with the limiting columns, and the main vibration damping seat is connected with the bearing plate through vibration damping springs sleeved on the outer side walls of the limiting columns.

Preferably, the adjusting part comprises a nut ring rotatably connected to the upper surface of the bearing plate, the nut ring is fixedly connected with an adjusting stud, and an adjusting threaded hole matched with the adjusting stud is formed in the upper disc.

Preferably, the locking piece is including evenly seting up the spacing mouth of a plurality of cross on overhead dish, the spacing mouthful inner wall of cross has the conflict ring through locking spring coupling, conflict intra-annular wall fixedly connected with locking post, a plurality of locking mouths with locking post looks adaptation are seted up to the track board bottom.

Preferably, supplementary damping piece includes the lower touch panel of connecting on shield tunnel basis through expansion bolts, the lower touch panel has last touch panel through bearing spring coupling, is located the bottom it is provided with the spacing ring that is used for the restriction to go up touch panel and removes to pile up a set bottom.

Preferably, the vibration isolation discs connected through the vibration isolation springs between the stacking discs are mutually abutted, the upper end and the lower end of each mounting ring are fixedly connected with fastening rings connected with the track plate through fastening bolts, two sides of each steel rail are connected with the track plate through L-shaped mounting blocks, and rubber gaskets are arranged at the contact parts of the mounting blocks and the steel rails.

Preferably, a damping block with a vibration absorption function is laid between the shield tunnel foundation and the track plate, and outer side plates used for blocking the damping block are arranged on the periphery of the bearing plate.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the vibration absorber, the prefabricated track plate is placed on the foundation, the main vibration absorption device is installed in the gap between the foundation and the track plate through the assembling holes formed in the prefabricated track plate, the vibration absorption springs in the main vibration absorption device and the magnetic layer with repulsive magnetism arranged in the vibration absorption springs are enabled to effectively counteract the vibration force of the track plate and the foundation when the vibration generated is achieved through adjusting the nut ring, the vibration absorption effect is improved through the damping blocks arranged in the gap, and the effective installation of the vibration absorber can be guaranteed while the installation of the track plate is not influenced.

2. Be provided with the collar through the bottom of being connected between rail and track board to be provided with in the collar and carry out the pile up the dish that adjusts pressure size, make the vibration that produces the rail can utilize and pile up the last conflict dish of dish conflict and carry out the active absorption with the carrier spring between the lower conflict dish and offset, do not transmit shield tunnel basis with the vibration between the track board that the rail produced on, in order to reach excellent vibration isolation effect.

Drawings

Fig. 1 is a schematic structural diagram of a novel subway vibration damping track structure and a vibration absorber device provided by the invention;

fig. 2 is a schematic structural view of a main cross section of the novel subway vibration damping track structure and the vibration absorber device provided by the invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic side view of a cross-sectional structure of a novel subway vibration damping track structure and a vibration absorber device according to the present invention;

fig. 5 is an enlarged schematic view of the structure at B in fig. 4.

In the figure: the device comprises a shield tunnel foundation 1, a track plate 2, a steel rail 3, a rectangular opening 4, a foundation base 5, an upper disc 6, a mounting ring 7, a thread mounting layer 8, a stacking disc 9, an assembly opening 10, a main vibration damping seat 11, a bearing plate 12, a built-in column 13, a magnetic layer 14, a limiting column 15, a nut ring 16, an adjusting stud 17, an adjusting thread opening 18, a cross limiting opening 19, a contact ring 20, a locking column 21, a lower contact disc 22, an upper contact disc 23, a limiting ring 24, a vibration isolation disc 25, a fastening ring 26, a mounting block 27 and an outer side plate 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, a novel subway vibration damping track structure and a vibration absorber device comprises a pouring type shield tunnel foundation 1, a track plate 2 is arranged above the shield tunnel foundation 1, two steel rails 3 which are oppositely arranged are arranged on the track plate 2, a plurality of rectangular openings 4 for vibration damping installation are arranged at the bottom in the shield tunnel foundation 1, a base seat 5 is arranged in each rectangular opening 4, the base seat 5 is connected with an upper disc 6 through a main vibration damping assembly, further, the main vibration damping assembly comprises a main vibration damping seat 11 arranged in the base seat 5, matching openings are arranged in the main vibration damping seat 11, the upper disc 6 is connected with a bearing plate 12 through a regulating piece, a plurality of built-in columns 13 matched with the matching openings are fixedly connected at the bottom of the bearing plate 12, magnetic layers 14 which are magnetically repellent are arranged at the bottom of the built-in columns 13 and on the inner wall of the matching openings, a plurality of limiting columns 15 are arranged at the bottom of the bearing plate 12 at the built-in columns 13, the main vibration damping seat 11 is provided with a plurality of sliding openings matched with the limiting column 15, and the main vibration damping seat 11 is connected with the bearing plate 12 through a vibration damping spring sleeved on the outer side wall of the limiting column 15.

Still further, the regulating part is including rotating the nut ring 16 of connecting at loading board 12 upper surface, nut ring 16 fixedly connected with adjustment stud 17, set up on the overhead dish 6 with the adjustment screw thread mouth 18 of adjustment stud 17 looks adaptation, rotate nut ring 16, make adjustment stud 17 all move into in the adjustment screw thread mouth 18, can make the clearance between overhead dish 6 and the basic seat 5 diminish like this, thereby diminish the thickness between overhead dish 6 and the basic seat 5, be convenient for install the bottom at track board 2 with equipment.

The upper disc 6 is connected with the bottom of the track plate 2 through a locking piece, further, the locking piece comprises a plurality of cross limiting openings 19 which are uniformly formed in the upper disc 6, the inner walls of the cross limiting openings 19 are connected with abutting rings 20 through locking springs, the inner side walls of the abutting rings 20 are fixedly connected with locking columns 21, and a plurality of locking openings matched with the locking columns 21 are formed in the bottom of the track plate 2; further benefits are taken: when the locking column 21 moves to the locking opening, the interference ring 20 locked by the interference spring can make the locking column 21 move upwards under the action of elastic force and insert into the locking opening, so that the horizontal movement between the upper disc 6 and the track plate 2 is avoided, and the downward transmission of the vibration force is ensured;

be located and seted up the installing port on the track board 2 of 3 under the rail, be provided with collar 7 in the installing port, 7 inside walls of collar have seted up screw

thread installation layer

8, 8 internal thread connections on screw thread installation layer have the dish 9 of piling up that superposes each other and set up, it is provided with supplementary damping piece to pile up 9 bottoms of dish, furtherly, supplementary damping piece includes through expansion bolts connection lower conflict dish 22 on shield tunnel basis 1, it has last conflict dish 23 to be connected through bearing spring to lower conflict dish 22, it is provided with the spacing ring 24 that is used for keeping apart on the restriction to conflict dish 23 removal to be located piling up 9 bottoms of bottom, it can guarantee to pile up the conflict effect between the last conflict dish 23 of dish 9 and bottom, avoid producing horizontal migration relatively.

Furthermore, the vibration isolation discs 25 connected through vibration isolation springs between the accumulation discs 9 are mutually abutted, the upper end and the lower end of the mounting ring 7 are fixedly connected with fastening rings 26 connected with the track plate 2 through fastening bolts, wherein the upper end surfaces of the fastening rings 26 are in contact with the steel rail 3 arranged on the track plate 2, and the vibration generated between the steel rail 3 and the track plate 2 is not transmitted to the shield tunnel foundation 1;

the equipment mouth 10 of being convenient for installation that the rectangle set up is offered to the track board 2 is last intensive, 3 both sides of rail are connected with track board 2 through the installation piece 27 that is the L type,

installation piece

27 and 3 contact site of rail are provided with the rubber gasket, the damping piece that has the function of shaking is laid between shield tunnel basis 1 and the track board 2, the setting of damping piece can effectual reduction track board 2 and the vibration between the shield tunnel basis 1, can realize the effective absorption of degree to the vibrational force through the damping piece, loading board 12 all is provided with the outer panel 28 that is used for blockking the damping piece all around, the setting of outer panel 28, can effectually avoid the damping piece to enter into inside the damping part.

When the vibration absorber is installed, the track plate 2 is manufactured according to the presetting and is transported into a tunnel for assembly, when the vibration absorber between the track plate 2 and the shield tunnel foundation 1 needs to be installed, the nut ring 16 is rotated in one step, so that the adjusting studs 17 are all moved into the adjusting threaded openings 18, the gap between the upper disc 6 and the foundation seat 5 is reduced, and the thickness between the upper disc 6 and the foundation seat 5 is reduced;

at this time, the upper disc 6 and the base seat 5 are inserted into the bottom of the track slab 2 through the assembling port 10 formed in the track slab 2, and the upper disc 6 and the base seat 5 are gradually moved to move, when the base seat 5 moves into the rectangular port 4 formed in the shield tunnel foundation 1 and adapted to the base seat 5 in the moving process, at this time, the nut ring 16 can be rotated at the assembling port 10 through an electric wrench tool, so that the nut ring 16 rotates, and the adjusting stud 17 extends outwards, so that the gap between the upper disc 6 and the bearing plate 12 is increased, and a main damping component arranged between the shield tunnel foundation 1 and the track slab is opened to work;

before that, the mounting ring 7 and the track plate 2 can be assembled by the fastening ring 26, and the lower contact disc 22 is mounted by the expansion bolts at the position corresponding to the mounting ring 7 on the shield tunnel foundation 1, and then assembled, the number of the stacking trays 9 positioned in the mounting ring 7 is reasonably arranged according to the specific required supporting elasticity coefficient, specifically, the stacking trays 9 are rotated by a tool, the stacker plate 9 is caused to engage the threaded mounting layer 8 within the mounting ring, and the stacker plate 89 is gradually caused to move downwardly, so that the accumulation disk 9 abuts against the upper abutment disk 23 arranged below, so that the bearing spring between the upper abutment disks 23 is compressed, therefore, the bearing spring arranged at the bottom is utilized to ensure that the vibration between the steel rail 3 and the track plate 2 is not transmitted to the shield tunnel foundation 1, so as to achieve excellent vibration isolation effect;

the vibration generated by the track slab 2 bearing the train load can be damped by the damping spring arranged between the built-in column 13 at the bottom of the bearing plate 12 and the main damping seat 11, and the two magnetic layers with repulsive magnetism arranged on the built-in column 13 and the main damping seat 11 can effectively reduce the impact by utilizing the mutual repulsion of magnetism when vibrating, thereby reducing the vibration.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Novel subway vibration reduction track structure and vibration absorber device comprises a pouring type shield tunnel foundation (1) and is characterized in that a track plate (2) is arranged above the shield tunnel foundation (1), two steel rails (3) which are oppositely arranged are arranged on the track plate (2), a plurality of rectangular openings (4) for vibration reduction installation are formed in the bottom of the shield tunnel foundation (1), a foundation base (5) is arranged in each rectangular opening (4), the foundation base (5) is connected with an upper disc (6) through a main vibration reduction assembly, the upper disc (6) is connected with the bottom of the track plate (2) through a locking piece, an installation opening is formed in the track plate (2) under the steel rails (3), an installation ring (7) is arranged in the installation opening, and a thread installation layer (8) is formed in the inner side wall of the installation ring (7), threaded mounting layer (8) internal thread connection has pile up dish (9) that stacks the setting each other, it is provided with supplementary damping piece to pile up dish (9) bottom, the equipment mouth (10) of being convenient for installation that the rectangle set up are offered to the upper-concentration of track board (2).

2. The novel subway vibration reduction track structure and vibration absorber device as claimed in claim 1, wherein said main vibration reduction assembly comprises a main vibration reduction seat (11) disposed in a base (5), said main vibration reduction seat (11) has a matching opening formed therein, said upper tray (6) is connected with a bearing plate (12) through an adjusting member, a plurality of inner columns (13) matched with said matching opening are fixedly connected to the bottom of said bearing plate (12), and said inner columns (13) and inner walls of said matching opening are both provided with magnetically repellent magnetic layers (14).

3. The novel subway vibration reduction track structure and vibration absorber device as claimed in claim 2, wherein a plurality of limiting columns (15) are arranged at the bottom of the bearing plate (12) at the position of the built-in column (13), a plurality of sliding openings matched with the limiting columns (15) are formed in the main vibration reduction seat (11), and the main vibration reduction seat (11) is connected with the bearing plate (12) through vibration absorption springs sleeved on the outer side walls of the limiting columns (15).

4. The novel subway vibration reduction track structure and vibration absorber device as claimed in claim 3, wherein said adjusting member comprises a nut ring (16) rotatably connected to the upper surface of the bearing plate (12), said nut ring (16) is fixedly connected with an adjusting stud (17), said upper tray (6) is provided with an adjusting screw hole (18) adapted to the adjusting stud (17).

5. The novel subway vibration reduction track structure and the vibration absorber device as claimed in claim 1, wherein said locking member comprises a plurality of cross-shaped limiting openings (19) uniformly formed on the upper tray (6), the inner wall of each cross-shaped limiting opening (19) is connected with a contact ring (20) through a locking spring, the inner side wall of each contact ring (20) is fixedly connected with a locking column (21), and a plurality of locking openings matched with the locking columns (21) are formed in the bottom of the track slab (2).

6. The novel subway vibration reduction track structure and vibration absorber device as claimed in claim 1, wherein said auxiliary vibration reduction member comprises a lower contact disc (22) connected to the shield tunnel foundation (1) through expansion bolts, said lower contact disc (22) is connected with an upper contact disc (23) through a bearing spring, and a limiting ring (24) for limiting the movement of the upper contact disc (23) is arranged at the bottom of said accumulation disc (9).

7. The novel subway vibration reduction track structure and the vibration absorber device as claimed in claim 1, wherein the stacking plates (9) are abutted against each other through vibration isolation plates (25) connected by vibration isolation springs, the upper and lower ends of the mounting ring (7) are fixedly connected with fastening rings (26) connected with the track plate (2) through fastening bolts, two sides of the rail (3) are connected with the track plate (2) through mounting blocks (27) in an L shape, and rubber gaskets are arranged at the contact parts of the mounting blocks (27) and the rail (3).

8. The novel subway vibration reduction track structure and vibration absorber device as claimed in claim 1, wherein a damping block with vibration absorption function is laid between said shield tunnel foundation (1) and said track slab (2), and said bearing plate (12) is provided with an outer side plate (28) for blocking said damping block.