CN210134289U - Floating type cross crossover road bed - Google Patents

Abstract

The utility model discloses a floating cross-over line railway roadbed, it includes the tunnel basement, installs in the tunnel basement and both ends respectively with the cross cab apron, many rail that floating railway roadbed is connected and be used for bearing the multiseriate rail bearing platform of many rails, cross the cab apron with have the clearance between the tunnel basement, be located every row in the both sides of rail bearing platform clearance department all is equipped with the connection cross the cab apron with a plurality of isolator of tunnel basement. The floating type cross-over line road bed separates the transition plate from the tunnel base, and the plurality of vibration isolators arranged between the transition plate and the tunnel base are connected with the transition plate and the tunnel base to float the transition plate for a certain gap, so that the vibration isolators can work effectively, and the floating type road bed can be formed for crossing, thereby effectively reducing the vibration of the crossing and reducing the noise.

Description

Floating type cross crossover road bed

Technical Field

The utility model relates to a track traffic field especially relates to a floating type crossovers railway roadbed.

Background

In recent years, with the gradual popularization of the domestic steel spring floating slab track bed technology, the structural design of the steel spring floating slab track bed can not only achieve the required vibration reduction effect. As the highest-grade and best-effect vibration reduction measure at present, the steel spring floating plate track bed is applied to more and more subway lines. As the number of subway lines has increased, the density of transfer stations and marshalling stations has also increased substantially, and these places require the laying of transitions to complete the transition.

As the weakest link of a rail system, when a train passes through a transit, vibration and noise caused by the train are much larger than those of other sections of a line, particularly in the transit sections with higher vibration reduction requirements, if the transit is in a densely populated area or other sections needing vibration reduction, corresponding vibration reduction measures must be taken for the transit, how to solve the problem of damage of the vibration and noise in rail transit to the environment and influence of residents on life is solved, and the rail transit system becomes the focus of people paying attention to subway construction.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The object of the present invention is to solve at least one of the above problems and drawbacks existing in the prior art.

(II) technical scheme

In order to solve the technical problem, the utility model provides a cross ferry line railway roadbed of floating formula, it includes the tunnel basement, installs in the tunnel basement and both ends respectively with the cross cab apron, many rail that floating formula railway roadbed is connected and be used for bearing the multiseriate rail platform of many rails, cross the cab apron with have the clearance between the tunnel basement, be located every row in the both sides of rail platform clearance department all is equipped with the connection cross the cab apron with a plurality of isolator of tunnel basement.

In some embodiments, the floating cross-over ramp bed further comprises a horizontal stop, and the vibration isolator passes through the cross-over plate and is fixed on the tunnel basement by the horizontal stop.

In some embodiments, an isolation layer is laid on the top surface of the tunnel base and the side, facing the transition plate, of the platforms on the two sides of the tunnel base, so as to prevent the transition plate from being cast integrally with the tunnel base when concrete is cast.

In some embodiments, the vibration isolators have a distribution density at the slab end of the transition plate and at the nuisance space that is greater than the distribution density at other locations of the transition plate.

In some embodiments, the two plate ends of the transition plate are respectively provided with a connecting device for connecting with the floating track bed.

In some embodiments, a sealing device is arranged at a gap between the transition plate and the adjacent floating track bed and/or a gap between the transition plate and the platform on two sides of the tunnel base.

In some embodiments, a central drainage ditch is arranged between two adjacent steel rails at the bottom of the transition plate, and an observation cylinder is arranged above the central drainage ditch of the transition plate to observe the condition of the central drainage ditch.

In some embodiments, the floating cross-over lane bed further comprises a cover plate connected with the cross-over plate and below the cross-over plate, for covering the central drainage ditch, wherein the cover plate is provided with a through hole corresponding to the observation cylinder.

In some embodiments, the outer side of the transition plate is further provided with a side drain extending in the line direction.

In some embodiments, the length of the transition plate is 20-40 m.

(III) advantageous effects

The utility model discloses above-mentioned embodiment floating formula cross ferry line railway roadbed, separate through will handing over the board with the tunnel basement to a plurality of isolator connection that arrange between the two hands over board and tunnel basement, with will handing over the board and float certain clearance, thereby guarantee that the isolator can work effectively, can form floating formula railway roadbed and hand over like this, with the vibration and the noise reduction of effectively reducing and handing over.

Drawings

Fig. 1 is a top view of a floating crossover ballast bed according to the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a view of the isolator mounting of a floating crossover ballast bed according to the present invention;

fig. 4 is a schematic view of the arrangement of internal reinforcing bars of a cross slab of a floating cross-over line track bed according to the present invention;

fig. 5 is a schematic view of a connection structure between a transition plate and an adjacent track bed of a floating cross-over line track bed according to the present invention.

Wherein, 1: a tunnel base; 2: a transition plate; 21: longitudinal ribs; 22: hooping; 3: a steel rail; 4: a rail bearing platform; 5: a gap; 6: a vibration isolator; 7: rail joints; 8: a board end; 9: a hazardous space; 10: a horizontal stopper; 11: an isolation layer; 12: a central drainage ditch; 13: a cover plate; 14: an observation cylinder; 15: a sealing device; 16: a side drain; 17: a connecting device; 18: a floating track bed.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 and 2, according to the utility model discloses a floating cross-over line railway roadbed includes tunnel basement 1, installs on tunnel basement 1 and both ends 8 respectively with the cross-over board 2, many rail 3 that floating railway roadbed 18 is connected and be used for bearing the multiseriate rail supporting platform 4 of many rail 3, wherein, rail 3 includes stock rail and switch, and it bears the horizontal power of train wheel jointly, connects and changes locking switch or point rail through the goat that sets up on adjacent floating railway roadbed 18 to the orbit of traveling of control train. Each row of rail bearing platforms 4 refers to a combination of a plurality of rail bearing platforms arranged along the length direction of one steel rail, a gap 5 is formed between the transition plate 2 and the tunnel base 1, the gap is 25-40mm, preferably 30mm, a plurality of vibration isolators 6 are arranged at the gaps in two sides of each row of rail bearing platforms 4, and the vibration isolators 6 are connected with the transition plate 2 and the tunnel base 1. The floating type cross-over line road bed separates the cross plate 2 from the tunnel base 1, and connects the cross plate 2 and the tunnel base 1 through the plurality of vibration isolators 6 arranged between the cross plate 2 and the tunnel base to float the cross plate 2 for a certain gap, so that the vibration isolators 6 can work effectively, and the floating type road bed can be formed for crossing, thereby effectively reducing the vibration of the crossing and reducing the noise.

In an exemplary embodiment, vibration isolators 6 are mounted on both sides of the rail platforms 4, and one vibration isolator 6 is mounted between two adjacent rail platforms 4 in each row of rail platforms 4, as shown in fig. 1. The vibration isolator 6 should be free of the rail joint 7.

It should be pointed out that the utility model provides a isolator 6 can adopt current general isolator, and preferably isolator 6 is built-in isolator, pours the outer sleeve that is used for installing isolator 6 in advance on handing over board 2, and its concrete structure sees utility model be CN201648885U, and the name is the chinese of a damping spring floating track bed damping device who has limit function authorizes the patent, perhaps sees utility model be CN101775762A, the name is the chinese of a damping spring floating track bed vibration isolation bearing structure authorizes the patent.

As shown in fig. 3, the vibration isolator 6 is preferably connected to the tunnel base 1 through the transition plate 2 by a horizontal stopper 10 for limiting horizontal movement of the vibration isolator 6 in the lateral and longitudinal directions, and the horizontal stopper 10 may be a positioning pin, for example. The horizontal limiting device 10 is basically installed at the joint of the vibration isolator 6 and the tunnel base 1, and the installation precision is guaranteed.

As shown in fig. 2, in an exemplary embodiment, isolation layers 11 are laid on the top surface of the tunnel base 1 and between the two side platforms of the tunnel base 1 and the transition plates 2 to prevent the transition plates 2 from being cast integrally with the tunnel base 1 when concrete is cast. The isolation layer 11 should be made of a material with certain toughness, difficult damage and high fire-proof rating, such as rubber, PVC, high silica, stainless steel wire mesh, etc.

As shown in fig. 1, in an exemplary embodiment, the distribution density of vibration isolators 6 is greater at the slab end 8 and the nuisance space 9 of the transition plate 2 than at other locations of the transition plate 2. Since the web ends 8 and the damaged spaces 9, etc. are weak links of the entire cross web 2, more vibration isolators 6 need to be provided at these locations relative to other locations to increase local stiffness for increased strength. The vibration isolators 6 at other positions are uniformly and symmetrically arranged, so that the uniform stress of the vibration isolators 6 is ensured, and the construction is convenient.

As shown in fig. 1 and 5, in an exemplary embodiment, the two plate ends 8 of the crossing plate 2 are respectively provided with a plurality of connecting devices 17, the connecting devices 17 are uniformly arranged and used for connecting with the adjacent floating track bed 18, and preferably, the connecting devices 17 are shear hinges or shear plates, which can be arranged on the upper portion, on the side portion, in the built-in portion, and the like, and can be used independently or combined. For the floating plate type transition plate 2, the shear hinge or the shear plate plays a role in transferring shear force and coordinating the deformation of the floating track bed. As shown in fig. 5, the transition plate 2 is connected to the adjacent floating track bed 18 at the plate end 8 by a connecting device 17, and a formwork is erected at the end plate end 8 due to the tunnel structure form and space limitation, so as to ensure that the floating track bed 18 is broken at the position, and to ensure the smooth proceeding of the subsequent jacking operation.

As shown in fig. 2 and 5, in an exemplary embodiment, in order to improve the sealing performance of the transition plate 2, sealing devices 15 in the same direction as the line direction are respectively provided between the transition plate 2 and the platforms on both sides of the tunnel base 1. Furthermore, a sealing device 15 is also provided at the connection between the transition plate 2 and the adjacent floating track bed 18, which sealing device 15 is intended to prevent impurities on the surface of the track bed from penetrating into the gap below the track bed. The sealing device 15 has a certain width, good tensile strength, convenient installation and tight sealing performance, and the sealing device 15 can be made of the existing materials or other materials meeting the requirements and having better quality. The prior material is specified in the Chinese patent with the utility model number of CN203096526U and the patent name of the prior material is a floating plate road bed laminated sealing device.

As shown in fig. 1 and 5, in an exemplary embodiment, a center drain 12 is disposed at the bottom of the transition plate 2 and between two adjacent steel rails 3 for draining accumulated water in the tunnel, the center drain 12 is preferably square, the conventional track bed or other track bed joints need to be processed in a sequential manner, the gradient is determined according to the specific situation, and the longitudinal gradient of the center drain 12 is consistent with the line gradient. In addition, the center drain 12 is laid along the center line of the line and avoids the position of the vibration isolator 6. An observation cylinder 14 is arranged above the central drainage ditch 12 of the transition plate 2 and used for observing the condition of the central ditch of the substrate, impurities are timely cleaned, and smooth drainage is better realized. Preferably, the plurality of observation tubes 14 should be arranged at intervals along the length of the central gutter 12.

The floating type cross crossover line road bed comprises a cover plate which is arranged below the transition plate 2 and connected with the transition plate 2 together and is used for covering the central drainage ditch 12, and the cover plate 13 is provided with a through hole corresponding to the observation cylinder 14. The cover plate 13 has a longitudinal length equal to the longitudinal length of the center drain 12, and the cover plate 13 has a lateral width greater than the width of the center drain 12, and the cover plate 13 is cast together with the cross plate 2.

The floating cross-over track bed includes side drains 16 on the outer sides of the cross-over plates extending in the track direction to further ensure smooth drainage.

The length of the transition plate is preferably 20-40 m, and the smoothness of the track is guaranteed while the vibration isolation performance is good.

As shown in fig. 4, the transition plate 2 is formed by pouring high-strength concrete after a reinforcement cage is formed by binding longitudinal bars 21 and stirrups 22 into a whole, and in order to ensure sufficient strength and weight, the reinforcement structure inside is as shown in fig. 4. The longitudinal ribs 21 of the transition plate 2 are divided into an upper layer, a middle layer and a lower layer, and are fixedly connected with the stirrups 22 in a mechanical connection mode, a binding mode or a welding mode and the like, and the longitudinal ribs at the middle layer are bound and fixed with the vibration isolator to finally form the structure of the reinforcement cage.

In order to reduce the damage of stray current to a rail transit direct current traction power supply system, a plurality of drainage terminals are respectively arranged at the plate ends 8 of the transition plate 2 and used for removing the stray current, so that the amount of the stray current is controlled within an allowable range. Preferably, 4 drain terminals are provided at each plate end 8 of the transition plate 2. The rail bearing platform, the outer sleeve of the vibration isolator 6 and the drainage terminal are all poured in the transition plate 2 and form a whole with the transition plate 2.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The floating type cross crossover track bed is characterized by comprising a tunnel base, a cross plate, a plurality of steel rails and a plurality of rows of rail bearing platforms, wherein the cross plate is arranged on the tunnel base, two plate ends of the cross plate are respectively connected with the floating type track bed, the plurality of steel rails are used for bearing the plurality of steel rails, a gap is formed between the cross plate and the tunnel base, and a plurality of vibration isolators for connecting the cross plate and the tunnel base are arranged at the gap in two sides of each row of rail bearing platform.

2. The floating crossover road bed of claim 1, further comprising a horizontal stop, the isolator passing through the transition plate and being secured to the tunnel foundation by the horizontal stop.

3. The floating crossover ballast bed of claim 1, wherein an isolation layer is applied to the top surface of the tunnel foundation and to the side of the platform on both sides of the tunnel foundation facing the crossover plate to prevent the crossover plate from being cast integrally with the tunnel foundation when the concrete is cast.

4. The floating crossover line bed of claim 1, wherein the vibration isolators have a greater distribution density at the slab ends of the crossover slab and at the nuisance spaces than at other locations of the crossover slab.

5. The floating crossover bed of claim 1, wherein the crossover plates are provided at both plate ends with connection means for connection to the floating bed, respectively.

6. The floating crossover bed according to claim 1, characterized in that sealing means are provided at the gap between the transition plate and the adjacent floating bed and/or at the gap between the transition plate and the platforms on both sides of the tunnel base (1).

7. The floating crossover bed of any of claims 1-6, wherein a center drain is provided on the bottom of the plate between two adjacent rails, and wherein an observation canister is provided on the plate above the center drain to observe the center drain.

8. The floating crossover line bed of claim 7, further comprising a cover plate below and connected to the crossover plate for covering the center drain, the cover plate having through holes corresponding to the observation cylinders.

9. The floating crossover bed of claim 7, wherein the outer sides of the crossover plates are further provided with side drains extending in the lane direction.

10. The floating crossover lane bed of any of claims 1-6, wherein the length of the crossover plate is 20-40 m.

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