Railway pivot structure column top vibration isolation support adopting periodic structure

Abstract

The utility model relates to the technical field of damping devices, in particular to a railway hub structural column top vibration isolation support adopting a periodic structure, which comprises a structural column, a traveling layer, a starting layer floor slab, a support body and a vibration isolator, the support body is arranged above the structural column of the traveling layer, the starting layer floor slab is arranged above the support body, and the vibration isolator is arranged above the structural column of the traveling layer. A vibration isolator is arranged in the support body; at present, large vibration and noise can be caused when a station passing vehicle passes through a station at a high speed, the vibration caused by the vehicle can be transmitted to an upper departure floor through a structural column, vibration is generated in a passenger waiting area, and waiting passengers are affected; according to the utility model, the support body is arranged between the structural column and the starting floor slab, so that a certain vibration reduction effect is achieved on the starting floor slab, the vibration isolator with the periodic structure is used in the support, the suppression of vehicle-induced vibration response in a specific frequency band can be realized, the vehicle-induced vibration and secondary noise response of a railway hub can be reduced, and the service life of the vehicle-induced vibration is prolonged. And the waiting comfort of passengers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration damping devices, in particular to a vibration isolation bearing at the top of a structural column of a railway hub adopting a periodic structure. Background Art

[0002] The construction of railway hubs is gradually increasing, and the vibration and secondary noise problems of railway hub buildings have gradually attracted attention. In particular, when passing trains pass through the station at high speed, it will cause relatively large vibration and noise. Many studies have pointed out that vehicle-induced vibration will be transmitted to the upper floor slab through the structural column, which is the main source of vibration in the area where the train passes. Therefore, it is necessary to set vibration damping at the top of the column.

[0003] Therefore, aiming at the problems that when passing trains pass through the station at high speed, it will cause relatively large vibration and noise, and vehicle-induced vibration will be transmitted to the upper departure floor slab through the structural column, resulting in vibration in the passenger waiting area and affecting the waiting passengers, a vibration isolation bearing at the top of a structural column of a railway hub adopting a periodic structure can be designed, which can play a certain role in damping the departure floor slab. The periodic structure vibration isolator used inside the bearing can suppress the response of vehicle-induced vibration in a specific frequency band, reduce the response of vehicle-induced vibration and secondary noise in the railway hub, and improve the comfort of passengers waiting for the train, which has certain popularization significance and application value. Summary of the Utility Model

[0004] In order to overcome the problems that when passing trains pass through the station at high speed, it will cause relatively large vibration and noise, and vehicle-induced vibration will be transmitted to the upper departure floor slab through the structural column, resulting in vibration in the passenger waiting area and affecting the waiting passengers.

[0005] The technical solution of the utility model is: a vibration isolation bearing at the top of a structural column of a railway hub adopting a periodic structure, including a structural column, a running layer, a departure floor slab, a bearing body and a vibration isolator. The bearing body is arranged above the structural column of the running layer, and the departure floor slab is located above the bearing body. The vibration isolator is arranged inside the bearing body.

[0006] Preferably, by arranging the bearing body between the structural column of the running layer and the departure floor slab, it can play a certain role in damping the departure floor slab. By installing a vibration isolator inside the bearing body, the response of vehicle-induced vibration in a specific frequency band can be suppressed, the response of vehicle-induced vibration and secondary noise in the railway hub can be reduced, and the comfort of passengers waiting for the train can be improved.

[0007] As a preference, the bearing body includes bolts and a lower steel plate. The lower steel plate is arranged above the structural column, and the lower steel plate is fixedly connected with the structural column through bolts.

[0008] Preferably, a lower pedestal is fixedly installed above the lower steel plate, and the vibration isolator is arranged inside the lower pedestal and fixedly connected to the lower pedestal.

[0009] Preferably, an upper pedestal is arranged above the vibration isolator and fixedly connected to the vibration isolator. Part of the upper pedestal is located inside the lower pedestal. An upper steel plate is fixedly installed above the upper pedestal. The upper steel plate is located below the departure floor slab and is fixedly connected to the departure floor slab by bolts.

[0010] Preferably, a plurality of groups of rubber particles are filled between the upper pedestal and the lower pedestal, and the rubber particles are located inside the lower pedestal.

[0011] Preferably, a plurality of groups of steel springs are fixedly installed above the lower pedestal. The steel springs are located between the lower pedestal and the upper steel plate and are fixedly connected to the upper steel plate.

[0012] Preferably, the vibration isolators are arranged vertically in a periodic manner. One period includes two layers. One layer is a rubber cushion layer arranged only around the periphery with a vacant center, and the other layer is a structure consisting of a steel plate cushion layer, an elastomer, and a scatterer from outside to inside. The rubber cushion layer and the steel plate cushion layer are arranged with a thickness ratio of 1:2.

[0013] Preferably, the elastomer is made of rubber material. One side of the elastomer is fixedly connected to the steel plate cushion layer, and the other side of the elastomer is fixedly connected to the scatterer. The scatterer is made of steel material.

[0014] The beneficial effects of the present utility model:

[0015] 1. Compared with the current situation where the passing train passing through the station at high speed will cause relatively large vibration and noise, the train-induced vibration will be transmitted to the upper departure floor slab through the structural column, resulting in vibration in the passenger waiting area and affecting the waiting passengers; by installing the support body between the structural column and the departure floor slab, the present utility model plays a certain role in reducing vibration of the departure floor slab. The vibration isolator with a periodic structure used inside the support can achieve the suppression of the train-induced vibration response in a specific frequency band, can reduce the train-induced vibration and secondary noise response of the railway hub, and improve the comfort of passengers waiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a plan schematic diagram of the layout position of the support body of the vibration isolation support at the top of the structural column of the railway hub with a periodic structure of the present utility model;

[0017] Figure 2 Shown is a three-dimensional schematic diagram of the vibration isolation support at the top of the structural column of the railway hub with a periodic structure of the present utility model;

[0018] Figure 3The figure shows a three-dimensional sectional view of the vibration isolation bearing at the top of the structural column of the railway hub with a periodic structure according to the present utility model;

[0019] Figure 4 The figure shows a three-dimensional view of the vibration isolator of the vibration isolation bearing at the top of the structural column of the railway hub with a periodic structure according to the present utility model;

[0020] Figure 5 The figure shows a three-dimensional view of the vibration isolator of the vibration isolation bearing at the top of the structural column of the railway hub with a periodic structure according to the present utility model;

[0021] Explanation of reference numerals: 1, structural column; 2, departure floor slab; 3, support body; 4, vibration isolator; 101, running floor; 301, bolt; 302, lower steel plate; 303, lower pedestal; 304, upper steel plate; 305, upper pedestal; 306, rubber particles; 307, steel spring; 401, rubber cushion; 402, steel plate cushion; 403, elastomer; 404, scatterer. Detailed implementation manners

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Please refer to Figures 1-5 , the present utility model provides an embodiment: a vibration isolation bearing at the top of the structural column 1 of a railway hub with a periodic structure, including a structural column 1, a running floor 101, a departure floor slab 2, a support body 3 and a vibration isolator 4. The support body 3 is arranged above the structural column 1 of the running floor 101, and the departure floor slab 2 is located above the support body 3. The vibration isolator 4 is arranged inside the support body 3; by arranging the support body 3 between the structural column 1 of the running floor 101 and the departure floor slab 2, a certain vibration reduction effect can be achieved on the departure floor slab 2. By installing and using the vibration isolator 4 inside the support body 3, the suppression of the vehicle-induced vibration response in a specific frequency band can be realized, the vehicle-induced vibration and secondary noise response of the railway hub can be reduced, and the comfort of passengers waiting for the train can be improved.

[0024] Please refer to Figures 1-3, in this embodiment, the support body 3 includes bolts 301 and a lower steel plate 302. The lower steel plate 302 is disposed above the structural column 1, and the lower steel plate 302 is fixedly connected to the structural column 1 through the bolts 301; a lower pedestal 303 is fixedly installed above the lower steel plate 302. The vibration isolator 4 is disposed inside the lower pedestal 303, and the vibration isolator 4 is fixedly connected to the lower pedestal 303; an upper pedestal 305 is disposed above the vibration isolator 4, and the upper pedestal 305 is fixedly connected to the vibration isolator 4. A part of the upper pedestal 305 is located inside the lower pedestal 303. An upper steel plate 304 is fixedly installed above the upper pedestal 305. The upper steel plate 304 is located below the departure floor slab 2, and the upper steel plate 304 is fixedly connected to the departure floor slab 2 through the bolts 301; by providing the bolts 301, the lower steel plate 302 can be installed at a height above the structural column 1, and the upper steel plate 304 can be fixedly installed below the departure floor slab 2. By providing the upper steel plate 304, the upper pedestal 305 can be installed. By providing the lower steel plate 302, the lower pedestal 303 can be installed. By providing the lower pedestal 303, the vibration isolator 4 can be installed, and the lower pedestal 303 is connected to the upper pedestal 305 through the vibration isolator 4; a plurality of groups of rubber particles 306 are filled between the upper pedestal 305 and the lower pedestal 303, and the rubber particles 306 are located inside the lower pedestal 303; a plurality of groups of steel springs 307 are fixedly installed above the lower pedestal 303. The steel springs 307 are located between the lower pedestal 303 and the upper steel plate 304, and the steel springs 307 are fixedly connected to the upper steel plate 304; by arranging the rubber particles 306 between the upper pedestal 305 and the lower pedestal 303, lateral support is provided for the upper pedestal 305. The upper pedestal 305 can also dissipate the energy of lateral vibration through particle extrusion. The rubber particles 306 can be recycled tire rubber particles 306, which can achieve waste recycling; by arranging the steel springs 307 at the top of the lower pedestal 303 and between the upper steel plates, they have a certain stiffness and damping, and play a role in reducing structural vibration.

[0025] Please refer to Figures 4-5, in this embodiment, the vibration isolators 4 are arranged vertically in a periodic pattern. One period consists of two layers. One layer is a rubber cushion layer 401 that is only arranged around the perimeter with an empty center. The other layer is a structure that from the outside to the inside is respectively a steel plate cushion layer 402, an elastomer 403, and a scatterer 404. The rubber cushion layer 401 and the steel plate cushion layer 402 are arranged with a thickness ratio of 1:2. The elastomer 403 is made of rubber material. One side of the elastomer 403 is fixedly connected to the steel plate cushion layer 402, and the other side of the elastomer 403 is fixedly connected to the scatterer 404. The scatterer 404 is made of steel material. Through the periodic arrangement of the rubber cushion layer 401 and the steel plate cushion layer 402, it is possible to achieve the suppression of vehicle-induced vibration response in a specific frequency band, and to reduce the vehicle-induced vibration and secondary noise response in the railway hub. Through the arrangement of the elastomer 403 and the scatterer 404, by using the mechanism of local resonance band gap, the overall height of the periodic structure is reduced, and the stability of the bearing is improved. By adjusting the width and thickness of the rubber cushion layer 401, the steel plate cushion layer 402 and the materials and widths of the elastomer 403 and the scatterer 404, it is possible to achieve the suppression of the transmission of lower-frequency vibrations.

[0026] When working, the bearing body 3 is installed between the structural column 1 of the driving layer 101 and the departure floor slab 2 by using bolts 301;

[0027] Steel springs 307 are arranged between the top of the lower pedestal 303 of the bearing body 3 and the upper steel plate, having a certain stiffness and damping, and playing a role in reducing the structural vibration;

[0028] Rubber particles 306 are arranged between the upper pedestal 305 and the lower pedestal 303 to provide lateral support for the upper pedestal 305, and the upper pedestal 305 can also dissipate the energy of lateral vibration through particle extrusion;

[0029] The vibration isolators 4 are used to connect the upper pedestal 305 and the lower pedestal 303. The suppression of the vehicle-to-vibration response in a specific frequency band can reduce the vehicle-induced vibration and secondary noise response in the railway hub, and improve the comfort of the waiting passengers above the departure floor slab 2;

[0030] Through the arrangement of the elastomer 403 and the scatterer 404 in the vibration isolator 4, by using the mechanism of local resonance band gap, the overall height of the periodic structure is reduced, and the stability of the bearing is improved. By adjusting the width and thickness of the rubber cushion layer 401, the steel plate cushion layer 402 and the materials and widths of the elastomer 403 and the scatterer 404, it is possible to achieve the suppression of the transmission of lower-frequency vibrations.

[0031] Through the above steps, by installing the support body 3 between the structural column 1 and the departure floor slab 2, a certain vibration reduction effect is exerted on the departure floor slab 2. The periodic structure isolator 4 used inside the support body 3 can achieve the suppression of the vehicle-induced vibration response in a specific frequency band, can reduce the vehicle-induced vibration and secondary noise response of the railway hub, and improve the comfort of passengers waiting for trains, so as to solve the problem that the passing trains at high speed through the station will cause relatively large vibrations and noises at present, and the vehicle-induced vibrations will be transmitted to the upper departure floor slab 2 through the structural column 1, resulting in vibrations in the passenger waiting area and affecting the passengers waiting for trains.

[0032] The above has described in detail the embodiments of the present invention with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A vibration isolation bearing at the top of a structural column (1) of a railway hub structure with a periodic structure, comprising a structural column (1), a running layer (101) and a departure floor slab (2); characterized in that: It also includes a support body (3) and a vibration isolator (4). The support body (3) is arranged above the structural column (1) of the driving floor (101), and the departure floor slab (2) is located above the support body (3). A vibration isolator (4) is arranged inside the support body (3).

2. The top vibration isolation bearing of the railway hub structural column (1) adopting a periodic structure according to claim 1, characterized in that: The support body (3) includes bolts (301) and a lower steel plate (302). The lower steel plate (302) is arranged above the structural column (1), and the lower steel plate (302) is fixedly connected to the structural column (1) through the bolts (301).

3. The top vibration isolation bearing of the railway hub structural column (1) adopting a periodic structure according to claim 2, characterized in that: An upper pedestal (303) is fixedly installed above the lower steel plate (302). The vibration isolator (4) is arranged inside the upper pedestal (303), and the vibration isolator (4) is fixedly connected to the upper pedestal (303).

4. A top vibration isolation bearing for a structural column (1) of a railway hub adopting a periodic structure according to claim 3, characterized in that: An upper pedestal (305) is arranged above the vibration isolator (4). The upper pedestal (305) is fixedly connected to the vibration isolator (4). Part of the upper pedestal (305) is located inside the upper pedestal (303). An upper steel plate (304) is fixedly installed above the upper pedestal (305). The upper steel plate (304) is located below the departure floor slab (2), and the upper steel plate (304) is fixedly connected to the departure floor slab (2) through the bolts (301).

5. The top vibration isolation bearing of the railway hub structural column (1) adopting a periodic structure according to claim 4, characterized in that: Multiple groups of rubber particles (306) are filled between the upper pedestal (305) and the upper pedestal (303), and the rubber particles (306) are located inside the upper pedestal (303).

6. The top vibration isolation bearing of the railway hub structural column (1) adopting a periodic structure according to claim 4, characterized in that: Multiple groups of steel springs (307) are fixedly installed above the upper pedestal (303). The steel springs (307) are located between the upper pedestal (303) and the upper steel plate (304), and the steel springs (307) are fixedly connected to the upper steel plate (304).

7. A top vibration isolation bearing of a railway hub structural column (1) adopting a periodic structure according to claim 1, characterized in that: The vibration isolators (4) are arranged in a vertical periodic arrangement. One period includes two layers. One layer is a rubber cushion layer (401) arranged only around the perimeter with a void in the center, and the other layer is a structure consisting of a steel plate cushion layer (402), an elastomer (403), and a scatterer (404) from the outside to the inside. The rubber cushion layer (401) and the steel plate cushion layer (402) are arranged with a thickness ratio of 1:

2.

8. The top vibration isolation bearing of the railway hub structural column (1) adopting a periodic structure according to claim 7, characterized in that: The elastomer (403) is made of rubber material. One side of the elastomer (403) is fixedly connected to the steel plate cushion layer (402), and the other side of the elastomer (403) is fixedly connected to the scatterer (404). The scatterer (404) is made of steel material.

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