Easy-maintenance floating ballast bed

A technology of floating ballast bed and easy maintenance, which is applied in the field of ballast bed, and can solve problems such as interruption of rail operation traffic, corrosion, and damage to supporting blocks, so as to prolong the service cycle and service life, broaden the prospect of popularization and application, and have good buffering and vibration isolation effects Effect

Active Publication Date: 2010-07-28
尹学军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned technical solution can successfully realize the elastic support of the floating slab, many floating ballast beds have been in dark, humid and harsh conditions for a long time due to the solid connection or integrated setting of the key structure used for support—the support block and the floating slab. In the working environment, once the support block is damaged or severely corroded, it will be very difficult to repair and replace, which may directly cause the floating track bed to fail to work normally and interrupt the rail operation traffic
The design life of the floating slab is 100 years, and the well-maintained concrete structure can generally meet the above requirements, but the life of ordinary carbon steel materials with spray paint or hot-dip galvanized anti-corrosion treatment is generally 20-30 years, which is obviously impossible without replacement. Meet design life requirements

Method used

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  • Easy-maintenance floating ballast bed
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  • Easy-maintenance floating ballast bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] like figure 1 , figure 2 , image 3 , Figure 4 As shown, the easy-to-maintain floating ballast bed of the present invention includes a floating plate 1 and an elastic vibration isolator 2, the elastic vibration isolator 2 is arranged in the reserved through hole of the floating plate 1, and a supporting block is arranged on the inner wall of the through hole 3. The floating plate 1 is supported on the elastic vibration isolator 2 through the support block 3. Four blind holes are reserved on the concrete structure of the inner wall of the through hole of the floating plate, and the support block 3 is partially inserted into the blind holes. The elastic vibration isolator 2 used in this example is a helical steel spring vibration isolator with a silicone oil liquid damping material inside, and the supporting block is made of ordinary carbon steel material and has been subjected to hot-dip galvanized anti-corrosion treatment.

[0022] In order to protect the blind hol...

Embodiment 2

[0029] like Image 6 As shown, the difference from Embodiment 1 is that a coupling sleeve 10 is pre-embedded in the reserved through hole of the floating plate 1 , and a relief through hole is provided on the coupling sleeve 10 corresponding to the position of the supporting block 3 . A bushing 4 made of ceramics is partially arranged in the blind hole of the block supporting the block. In order to prevent the support block 3 from moving horizontally, a limit plate 7 is welded on the coupling sleeve 10, and a positioning pin 8 is used to position and prevent slippage between the limit plate 7 and the support block 3 . In order to facilitate jacking, a jacking block 11 is also provided on the top of the coupling sleeve 10, and the dust cover 9 is fixed on the jacking block 11. The elastic vibration isolator 2 used in this embodiment is a helical steel spring vibration isolator with rubber solid damping material inside.

[0030] In order to prevent relative movement between th...

Embodiment 3

[0033] like Figure 7 As shown, the difference from Example 1 is that naked blind holes are set on the concrete inner wall of the through-holes reserved for the floating slab. In order to prevent water storage, the blind holes are all inclined. The main force direction of the block 3 is upward, and such an inclined structure can also effectively prevent the support block from breaking out of the hole. But in order to ensure that the support block can not move, after the jacking is completed, a limit plate 13 is set above the gasket 5 and in the middle of the support block to withstand the support block. In addition, for the convenience of jacking, a jacking block 11 is preset on the floating plate 1 . In order to strengthen the strength of the blind hole, a reinforced mesh 30 is provided around the blind hole with stainless steel bars to meet the requirement of a design life of 100 years. If ordinary steel bars are used as reinforced steel mesh, there should be a layer of co...

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PUM

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Abstract

The invention belongs to a railway ballast bed and relates to a track structure of the railway. The railway ballast bed comprises a floating slab and an elastic vibration isolator, wherein the elastic vibration isolator is arranged in a reserved through hole of the floating slab; a support stop block is arranged on the inner wall of the through hole; the floating slab is supported on the elastic vibration isolator through the support stop block; a blind hole or a groove is reserved on a concrete structure of the inner wall of the through hole of the floating slab; and the support stop block is inserted in the blind hole or the groove. In the invention, the support stop block is separated from the floating slab, the support stop block can be maintained and replaced at any time under the condition of unchanged original vibration isolation performance of the floating ballast bed, the structure is more reasonable, and the service life of the floating ballast bed is beneficially prolonged.

Description

technical field [0001] The invention belongs to a railway track bed, and in particular relates to a track structure of a railway, which may specifically be a track bed of a railway, a subway, an urban railway, an elevated light rail, a high-speed railway, or the like. Background technique [0002] Vibration and noise are recognized as the most widely affected public hazards, and they are also a problem that needs to be solved urgently in the development of rail transit in recent years. Among the existing rail transit vibration and noise reduction technologies, the most successful practical application is the component floating technology, typically the floating ballast bed technology, which has high vibration isolation efficiency and stable working performance, which has become a consensus in the industry. The Chinese patent No. ZL2004100354411 discloses a floating track bed structure, wherein the built-in floating plate is provided with a through hole on the floating plate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B19/00E01B1/00
Inventor 尹学军孔祥斐
Owner 尹学军
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