CN211772434U - Fabricated floating slab track system - Google Patents

Abstract

The utility model relates to a railway rails construction technical field provides an assembled floating slab track system. The assembled floating slab track system comprises a track slab, wherein a plurality of rail bearing platforms are arranged at the top of the track slab, steel rails are arranged on the rail bearing platforms, vibration isolation devices are arranged at the bottom of the track slab, and vibration absorption devices are arranged on the track slab. This application, the device and the vibration isolation device of shaking play the damping effect simultaneously, increase the damping effect, the device of shaking includes the vibration isolation bullet pad, power piece and balancing weight, through the vibration isolation bullet pad and the vibration of power piece reaction force reduction track board that produces when the vibration, rigidity through adjustment vibration isolation bullet pad and power piece changes the vibration isolation effect, quality through changing the balancing weight changes track board self construction quality, adjust natural frequency, increase application scope, when the maintenance, only need pull down the balancing weight earlier, can take out the vibration isolation device, high durability and convenient operation, reduce work load, the track board adopts the assembled structure, self quality is controllable, be convenient for transport and assemble.

Description

Fabricated floating slab track system

Technical Field

The utility model relates to a railway rails construction technical field, concretely relates to assembled floating slab track system.

Background

Along with social development and technological progress, the importance of rail transit is increasingly highlighted. The problems of vibration and noise generated when vehicles run must be solved in the construction of rail transit, otherwise, the quality of life of surrounding residents is seriously affected, and the safety of surrounding buildings is endangered. Meanwhile, the stability, safety and service life of the rail transit itself are also affected. In order to control vibration and noise generated in rail transit operation, researchers develop a plurality of vibration-damping and noise-reducing products, wherein the vibration-damping effect of the steel spring floating track bed technology is the most ideal, the steel spring floating track bed technology is suitable for high or special vibration-damping places with higher vibration-damping requirements, such as hospitals, music halls, museums and the like, and the steel spring floating track bed technology is widely applied to the aspect of rail transit vibration noise control.

The floating slab track is a vibration source of subway traffic and is also an intermediate way for transmitting wheel track vibration to a foundation, the vibration of the floating slab track has the characteristics of broadband and multidirectional coupling, and the floating slab track can be used for a track supporting system with wider frequency range vibration isolation, so that the propagation of wheel track vibration energy can be effectively reduced, and adverse effects and damages to building structures and resident lives along the subway are reduced. However, such floating plate vibration damping rails also have the following drawbacks:

(1) the floating plate generally adopts a rubber and steel spring passive vibration isolation device, so that effective isolation of wheel track vibration can be realized in a wider frequency range, but the parameters of the passive vibration isolator cannot be adjusted and controlled in real time according to the vibration excitation condition, and the isolation capability of the passive vibration isolator is not enough for low-frequency vibration with lower frequency;

(2) the track slab has large mass, high manufacturing cost, inconvenient installation of a prefabricated structure, complex construction procedure of a cast-in-place structure, large field workload and low construction speed;

(3) the vibration isolator on the floating plate is difficult to position, the installation is not firm, the vibration reduction effect is easy to reduce, the vibration isolator is inconvenient to replace, and the later maintenance workload is large.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem or at least partially solve the above technical problem, the present invention provides an assembled floating slab track system.

The assembled floating slab track system comprises a track slab for placing steel rails, wherein a plurality of rail bearing platforms are arranged at the top of the track slab along the length direction of the track slab at intervals, the steel rails are arranged on the rail bearing platforms, a vibration isolation device is arranged at the bottom of the track slab, and a vibration absorption device for changing the self mass of the track slab is arranged on the track slab.

Optionally, the vibration absorbing device includes a power block disposed above the track plate and weight blocks disposed on two sides of the track plate.

Optionally, the power block and the counterweight block can be detachably arranged on the track plate.

Optionally, a vibration isolation elastic pad is arranged between the track plate and the power block.

Optionally, the vibration isolation elastic pad is detachably arranged on the track plate.

Optionally, the power block and the vibration isolation elastic pad are arranged between the two steel rails.

Optionally, the vibration isolation device comprises a plurality of steel wire vibration dampers arranged at the bottom of the track plate.

Optionally, the masses of the two balancing weights are the same.

Optionally, the mass of one of the clump weights is greater than the mass of the other clump weight.

Optionally, a sealing strip is arranged on one side of the counterweight block, which is far away from the track plate.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

according to the vibration absorption device, the vibration absorption device and the vibration isolation device play a vibration absorption role at the same time, the vibration absorption effect is improved, the vibration absorption device comprises the vibration isolation elastic pad, the power block and the balancing weight, and the vibration effect of the track slab is reduced through the reaction force generated by the vibration isolation elastic pad and the power block when the track slab vibrates; the vibration isolation effect is changed by adjusting the rigidity of the vibration isolation elastic cushion and the power block, so that different working requirements are met; the self structural mass of the track slab is changed by changing the mass of the balancing weight, the natural frequency is adjusted, and the application range is enlarged; when the maintenance, only need pull down the balancing weight earlier, can take out the vibration isolator, convenient operation reduces work load, and the track board adopts the assembled structure, and self quality is controllable, is convenient for transport and assembles.

Drawings

Fig. 1 is a schematic view of a fabricated floating slab track system according to an embodiment of the present invention.

Reference numerals:

1. a track plate; 2. a power block; 3. a vibration isolation spring pad; 4. a balancing weight; 5. a vibration isolation device; 6. a sealing strip; 7. and a fastening device.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are some, but not all embodiments of the invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

As shown in fig. 1, the fabricated floating slab track system provided by the embodiment of the present application includes a track plate 1 for placing two rails, a plurality of rail supporting platforms are arranged at intervals along the length direction of the top of the track plate 1, and the rails are arranged on the rail supporting platforms in parallel along the length direction of the track plate 1. The bottom of the track slab 1 is provided with a vibration isolation device 5, the vibration isolation device 5 comprises a plurality of steel wire vibration dampers arranged at the bottom of the track slab 1, the number of the steel wire vibration dampers can be changed according to different vehicle speeds at different positions, and the adaptive vibration damping effect is achieved. The track slab 1 is provided with a vibration absorbing device for changing the mass of the track slab.

In some embodiments, the vibration absorbing means includes a power block 2 disposed above the track plate 1 and a weight block 4 disposed at both sides of the track plate 1. By adding the power block 2 and the balancing weight 4 on the track slab 1, the mass of the self structure of the track slab 1 is changed, and the natural frequency is adjusted.

In other embodiments, the vibration absorbing device includes a power block 2 disposed above the track plate 1 and a weight block 4 disposed at both sides of the track plate 1, and both the power block 2 and the weight block 4 are detachably disposed on the track plate 1. This kind of design, the self weight of accessible change different masses of power piece 2 and balancing weight 4 change track board 1 to this adaptation different track demands increase application range.

In other embodiments, the vibration isolation elastic pad 3 is detachably disposed between the track slab 1 and the power block 2, the vibration isolation elastic pad 3 and the power block 2 are sequentially disposed above the track slab 1 to form a resonance system, and a reaction force generated by the resonance system when the track slab 1 vibrates reduces the vibration of the track slab 1, specifically, the energy generated by the vibration of the track slab 1 is consumed by the elasticity of the vibration isolation elastic pad 3, so as to achieve a vibration absorption effect. The vibration isolation elastic pad 3 can be detachably arranged on the track plate 1, the vibration isolation elastic pad 3 of the power block 2 with different rigidity can be replaced to change the vibration absorption effect, and the requirements of different use conditions are met. Specifically, the power block 2 and the vibration isolation elastic pad 3 are arranged between two steel rails, so that the mass distribution of two sides of the rail plate 1 is uniform.

An installation cavity for installing the vibration isolation device 5 is formed between the balancing weight 4 and the track plate 1, and the vibration isolation device 5 is arranged in each installation cavity. This kind of design is convenient for the installation of vibration isolation device 5, and when the maintenance, only needs to dismantle balancing weight 4 earlier, can take out vibration isolation device 5, and convenient operation reduces work load.

The vibration absorption device and the vibration isolation device 5 play a role in vibration absorption and increase vibration absorption effects, the vibration absorption device comprises the vibration isolation elastic cushion 3, the power block 2 and the balancing weight 4, and the vibration effect of the track slab 1 is reduced through the reaction force generated by the vibration isolation elastic cushion 3 and the power block 2 when the track slab 1 vibrates; the vibration isolation effect is changed by adjusting the rigidity of the vibration isolation elastic cushion 3 and the power block 2, so that different working requirements are met; the self structural mass of the track slab 1 is changed by changing the mass of the balancing weight 4, the natural frequency is adjusted, and the application range is enlarged; when the maintenance, only need pull down balancing weight 4 earlier, can take out vibration isolator 5, convenient operation reduces work load, and track board 1 adopts the assembled structure, and self quality is controllable, is convenient for transport and assembles.

The track system adopts the prefabricated plate structure, produces track board 1 and other components at the mill earlier, installs it in waiting to be under construction department again, and track board 1 quality is controllable, changes track board 1 quality itself through additional balancing weight 4, and maintainability is strong, can pre-buried connecting piece on the track board 1, is connected through the connecting piece between track board 1 and the vibration isolation device 5. If cast-in-place construction is adopted, the connecting piece is welded with the steel bar through the embedded part, and concrete pouring is carried out after the vibration isolation device 5 is installed and adjusted in position, so that the track slab 1 is formed.

The track plate 1 is provided with a fastening device 7 for limiting the positions of the power block 2 and the vibration isolation elastic pad 3. Specifically, the fastening device 7 is a fixing bolt, a threaded hole is reserved in the top of the track plate 1, and through holes are formed in the power block 2 and the vibration isolation elastic pad 3. During installation, the vibration isolation elastic pad 3 and the power block 2 are sequentially placed at the top of the track plate 1, the fixing bolt sequentially penetrates through the through hole, and the fixing bolt is screwed to complete positioning. The fastening device 7 can effectively prevent the power block 2 and the vibration isolation elastic pad 3 from separating, the stability of the structure is improved, meanwhile, the replacement of the power block 2 and the vibration isolation elastic pad 3 is facilitated, and the use convenience is improved.

In some embodiments, the mass of two weights 4 disposed on both sides of the track plate 1 is the same on a straight track. The mass of the track slab 1 at the position is uniformly distributed, and the vibration absorption effect of the vibration absorption device and the vibration isolation device 5 on the two sides of the track slab 1 is balanced.

In other embodiments, in curved sections, the mass of one of the weights 4 is greater than the mass of the other weight 4. Specifically, the mass of the weight block 4 on the inner side of the curve is greater than the mass of the weight block 4 on the outer side of the curve, so that the vibration reduction effect on the inner side of the track slab 1 is improved.

The top of balancing weight 4 of this application and the top of track board 1 are at same horizontal plane, avoid balancing weight 4 to influence the normal travel of train. And one side of the balancing weight 4, which is far away from the track plate 1, is provided with a sealing strip 6, so that a gap between the balancing weight 4 and a contact surface of the balancing weight is avoided, and the self vibration of the track plate 1 is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The assembled floating slab track system is characterized by comprising a track slab for placing steel rails, wherein a plurality of rail bearing platforms are arranged at the top of the track slab at intervals along the length direction of the track slab, the steel rails are arranged on the rail bearing platforms, a vibration isolation device is arranged at the bottom of the track slab, and a vibration absorption device for changing the mass of the track slab is arranged on the track slab.

2. The fabricated floating slab track system of claim 1, wherein the shock absorbing means includes a power block disposed above the track slab and a weight block disposed on both sides of the track slab.

3. The fabricated floating slab track system of claim 2, wherein both the power block and the counterweight block are removably disposed on the track plate.

4. The fabricated floating slab track system of claim 2, wherein a vibration isolation resilient pad is provided between the track slab and the power block.

5. The fabricated floating slab track system of claim 4, wherein the vibration isolation resilient pads are removably disposed on the track plate.

6. The fabricated floating slab track system of claim 4, wherein the power blocks and the isolator mounts are disposed between two of the rails.

7. The fabricated floating slab track system of claim 1, wherein the vibration isolation means includes a plurality of wire dampers disposed at a bottom of the track slab.

8. The fabricated floating slab track system of claim 2, wherein the masses of both of said clump weights are the same.

9. The fabricated floating slab track system of claim 2, wherein the mass of one of said clump weights is greater than the mass of the other clump weight.

10. The fabricated floating slab track system of claim 2, wherein a side of the counterweight remote from the track slab is provided with a seal.

Images