CN201648877U

CN201648877U - Plate type vibration reducing structure for ballastless track

Info

Publication number: CN201648877U
Application number: CN2010201530271U
Authority: CN
Inventors: 朱颖; 颜华; 刘辉; 潘自立; 李保友; 田春香; 曹保; 何晓敏; 杨明辉; 林红松; 韩义涛; 李粮余; 汪盈盈
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC; China Railway Group Ltd CREC
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC; China Railway Group Ltd CREC
Priority date: 2010-04-08
Filing date: 2010-04-08
Publication date: 2010-11-24
Anticipated expiration: 2020-04-08

Abstract

The utility model discloses a plate type vibration reducing structure for a ballastless track, which aims at effectively reducing vibration and noise, is applied to sensitive districts and can control the vibration and noise of a track structure within a specified index range. The plate type vibration reducing structure for the ballastless track comprises a bearing layer (10), a track plate (20) laid longitudinally along the lines, and a regulating layer (30) arranged between the bearing layer (10) and the track plate (20), wherein an elastic vibration reducing layer is arranged between the top surface of the bearing layer (10) and the bottom surface of the regulating layer (30); and the bearing layer (10) has a limiting structure acting on the regulating layer (30).

Description

Plate-type ballastless track vibration-reducing construction

Technical field

The utility model relates to railway ballastless track, particularly a kind of plate-type ballastless track vibration-reducing construction that is used for high-speed railway.

Background technology

The plate-type ballastless track structure mainly is made of decks such as track plate, adjustment layer and bearing beds, and the track plate adopts prestressed reinforced concrete structure, and bearing bed is laid on the online basis down.Wherein adjust layer as the critical structures layer that the non-fragment orbit structural elasticity is adjusted and power transmission is supported, directly influence bullet train and fast and safely move.In existing plate-type ballastless track structure, the track plate adopts prestressed reinforced concrete structure usually, for avoiding the plate body cracking, laterally is laid with many group prestressed steel bars in the plate body.Track plate road along the line vertically is laid on to be adjusted on the floor, during laying adjacent two blocks of track plates vertically between adopt circular convex retaining platform, after the adjustment of track plate was in place, the filling asphalt mortar, bituminous mortar was adjusted layer between track plate and carrying laminate, potting resin mortar in the gap between plate and convex retaining platform.

Along with the raising of people's living standard, also more and more higher to environment requirement.Railway traffic will be walked the road of sustainable development, when improving traffic, also will guarantee good living environment.This just requires to the more sensitive location of vibration and noise, should take the track vibration-reducing measure to satisfy requirement on environmental protection carrying out railway planning, design, when building, must taking into full account the influence to environment along the line according to the vibration and noise index.In existing non-fragment orbit, vibration and noise mainly is to control by the measures such as acoustic screen that are arranged on the circuit both sides.

The utility model content

Technical problem to be solved in the utility model provides a kind of plate-type ballastless track vibration-reducing construction, can reduce vibration and noise effectively, and applying to responsive location can be controlled at the vibration and noise of track structure in the set quota.

The technical scheme that its technical problem that solves the utility model adopts is: plate-type ballastless track vibration-reducing construction of the present utility model, comprise the track plate that vertically lay on bearing bed and road along the line, and the adjustment layer between bearing bed, track plate, it is characterized in that: be provided with the elastic damping layer between the bottom surface of the end face of described bearing bed and adjustment layer, bearing bed has the position limiting structure that acts on the self-compacting concrete layer.

Described elastic damping layer is made of the two row rubber pads that are horizontally arranged at interval along bearing bed.

The beneficial effects of the utility model are, have the favorable damping effect, can reduce vibration and noise effectively, and applying to responsive location can be controlled at the vibration and noise of track structure in the set quota, guarantees good living environment.

Description of drawings

This manual comprises following four width of cloth accompanying drawings:

Fig. 1 is the schematic cross-sectional view of the utility model plate-type ballastless track vibration-reducing construction;

Fig. 2 is the paving mode floor map of elasticity cushion blocking in the utility model plate-type ballastless track vibration-reducing construction;

Fig. 3 is the enlarged diagram of A part among Fig. 1;

Fig. 4 is the schematic cross-sectional view of the utility model plate-type ballastless track vibration-reducing construction.

Component shown in the figure, toponym and pairing mark: bearing bed 10, positive stop lug boss 11, limited impression 12, retaining platform 13, cystosepiment 14, track plate 20, adjustment layer 30, rubber pad 41, rubber pad 42, cystosepiment 43.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

With reference to Fig. 1 and Fig. 4, plate-type ballastless track vibration-reducing construction of the present utility model comprises the track plate 20 that vertically lay on bearing bed 10 and road along the line, and the adjustment layer 30 between bearing bed 10, track plate 20.Be provided with the elastic damping layer between the bottom surface of the end face of described bearing bed 10 and adjustment layer 30, bearing bed 10 has the position limiting structure that acts on adjustment layer 30.Can reduce vibration and noise effectively by the elastic damping layer, applying to responsive location can be controlled at vibration and noise in the set quota, guarantees good living environment.

Following table is the peaked contrast of each position acceleration of the utility model plate-type ballastless track vibration-reducing construction and common ballastless track structure, the basic down acceleration magnitude of the base of the utility model plate-type ballastless track vibration-reducing construction and line obviously reduces than common ballastless track structure as can be seen, illustrates that effectiveness in vibration suppression is good.

Acceleration maximum value (m/s ²)

The elastic damping layer adopts has certain thickness rubber pad, and a kind of preferred laying mode of elastic damping layer has been shown among Fig. 1 and Fig. 2, and promptly described elastic damping layer is made of the two

row rubber pads

41,42 that are horizontally arranged at interval along bearing bed 10.For making, be equipped with cystosepiment 43 between the described two

row rubber pads

41,42 in construction.With reference to Fig. 3, be provided with the retaining platform 13 that

rubber pad

41,42 is constituted constraint in the both lateral sides of described bearing bed 10, take place laterally to slide to avoid

rubber pad

41,42.

The effect of position limiting structure is the influence to track structure of constraint horizontal train load and vertical equity brake force.A kind of concrete form of position limiting structure has been shown among Fig. 4, be the positive stop lug boss 11 of described position limiting structure for laying at interval along bearing bed 10 center lines, each positive stop lug boss 11 is upwards protruded into by bearing bed 10 surfaces and adjusts in the layer 30, is equipped with cystosepiment 14 between the end face of positive stop lug boss 11 and pairing adjustment layer 30 bottom surface.The another kind of concrete form of position limiting structure has been shown among Fig. 1, be the limited impression 12 of described position limiting structure for laying at interval along bearing bed 10 center lines, adjust layer 30 perfusion back and limited impression 12 in, form a recessed boss, between the bottom surface of the bottom surface of limited impression 12 and adjustment layer 30 recessed boss, be equipped with cystosepiment 14.

The utility model is applicable to and adopts CA screed or self-compacting concrete layer as the non-fragment orbit structure of adjusting layer.

Some principles of the above the utility model plate-type ballastless track vibration-reducing construction that just explains through diagrams, be not be the utility model to be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.

Claims

1. plate-type ballastless track vibration-reducing construction, comprise the track plate (20) that vertically lay on bearing bed (10) and road along the line, and be positioned at adjustment layer (30) between bearing bed (10), the track plate (20), it is characterized in that: be provided with the elastic damping layer between the bottom surface of the end face of described bearing bed (10) and adjustment layer (30), bearing bed (10) has the position limiting structure that acts on adjustment layer (30).

2. plate-type ballastless track vibration-reducing construction as claimed in claim 1 is characterized in that: described elastic damping layer is made of the two row rubber pads (41,42) that are horizontally arranged at interval along bearing bed (10).

3. plate-type ballastless track vibration-reducing construction as claimed in claim 2 is characterized in that: be equipped with cystosepiment (43) between the described two row rubber pads (41,42).

4. plate-type ballastless track vibration-reducing construction as claimed in claim 2 is characterized in that: the both lateral sides of described bearing bed (10) is provided with the retaining platform (13) that rubber pad (41,42) is constituted constraint.

5. plate-type ballastless track vibration-reducing construction as claimed in claim 1 or 2, it is characterized in that: the positive stop lug boss (11) of described position limiting structure for laying at interval along bearing bed (10) center line, each positive stop lug boss (11) are upwards protruded into by bearing bed (10) surface and adjust in the layer (30).

6. plate-type ballastless track vibration-reducing construction as claimed in claim 5 is characterized in that: be equipped with cystosepiment (14) between the end face of described positive stop lug boss (11) and pairing adjustment layer (30) bottom surface.

7. plate-type ballastless track vibration-reducing construction as claimed in claim 1 or 2 is characterized in that: the limited impression (12) of described position limiting structure for laying at interval along bearing bed (10) center line, and adjust layer (30) perfusion back and in limited impression (12), form recessed boss.

8. plate-type ballastless track vibration-reducing construction as claimed in claim 7 is characterized in that: be equipped with cystosepiment (14) between the bottom surface of the bottom surface of described limited impression (12) and adjustment layer (30) recessed boss.

9. plate-type ballastless track vibration-reducing construction as claimed in claim 1 or 2 is characterized in that: described adjustment layer (30) is CA screed or self-compacting concrete layer.