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A prefabricated floating slab track bed and its construction method

A floating board, prefabricated technology, applied in the field of track beds, can solve the problems that prefabricated long boards are difficult to adapt to changing curve elements, narrow space, and cannot be used, and achieve easy product quality assurance, shortened production cycle, and transportation. And the effect of convenient and quick hoisting

Active Publication Date: 2016-01-20
GERB QINGDAO VIBRATION CONTROL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a traditional floating slab with a length of 25m weighs more than 70 tons. The carrying capacity of the hoisting and transporting tools in the existing tunnel is only 10 tons. The difference is too large, and the overall prefabrication cannot be transported; In curved areas, it is difficult for prefabricated long slabs to adapt to changing curve elements, so prefabricated slab technology has not been able to be applied in the construction of point-supported floating track bed projects such as steel spring floating slabs
How to further increase the construction speed has become an industry problem that restricts the further promotion and application of floating ballast bed technology

Method used

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  • A prefabricated floating slab track bed and its construction method
  • A prefabricated floating slab track bed and its construction method
  • A prefabricated floating slab track bed and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Such as figure 1 , Figure 6 and Figure 7 A section of typical structure of the prefabricated floating slab ballast bed of the present invention shown, to adopt figure 2 The prefabricated short slab of the structure shown is taken as an example of a floating slab. The length of the prefabricated short slab is 3.57m, and anchors 9 are integrated on the prefabricated short slab. In addition, each prefabricated short slab is also provided with four reserved passages Hole 8, the end of the prefabricated short slab along the longitudinal direction of the rail is provided with an installation gap 60 for the plate end vibration isolation device, and the prefabricated short slab is provided with a reserved slot for placing the plate end vibration isolation device under the end of the slab body along the longitudinal direction of the rail 61. For the convenience of description, the prefabricated short slabs are numbered 1, 2 and 3 in sequence, and the structure of the prefa...

Embodiment 2

[0116] Such as Figure 9 The difference between the prefabricated floating slab track bed of the present invention and the first embodiment is that the Figure 8 The prefabricated short slabs of the structure shown are used as floating slabs, and each prefabricated short slab is provided with four placement grooves 27 matched with elastic vibration isolators. In addition, two mid-mounted shears are symmetrically arranged on the end faces of the prefabricated short slabs. Force hinge 31. For ease of description, the prefabricated short slabs are numbered 28, 29 and 30 in sequence, and the structure of the prefabricated floating slab track bed of the present invention will be described in detail below in conjunction with the section view of the prefabricated short slab 29. Such as Figure 9 and Figure 13 As shown, each prefabricated short board is elastically supported by four elastic vibration isolators 25 and four plate end vibration isolation devices 32, and the adjacent ...

Embodiment 3

[0120] Based on the technical principle described in Embodiment 2, such as Figure 14 and Figure 15 As shown, different from the plate end vibration isolation device in Embodiment 2, the plate end vibration isolation device in this example is provided with two groups of plate end longitudinal limiters respectively composed of a longitudinal limit plate 33, an adjusting bolt 35 and a lock nut 34. In addition to the positioning device, two groups of plate end lateral limiting devices are respectively formed by the lateral limiting plate 40, the adjusting bolt 42 and the lock nut 41, wherein the adjusting bolt 42 in the plate end lateral limiting device penetrates the supporting plate 43 Setting, the support plate 43 is welded and fixedly connected with the top plate 10 and the support plate 36 respectively. Apply plate end isolators as described in this example instead of Figure 9 When the plate end vibration isolator 32 constitutes the prefabricated floating slab track bed ...

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Abstract

The invention belongs to a railway track bed and particularly relates to a prefabricated floating slab track bed and a construction method thereof. The prefabricated floating slab track bed comprises floating slabs and is characterized in that each floating slab is a prefabricated short slab with the length of 1.2-8 m, at least two slab end vibration isolating devices are arranged on the lower side of each end of the prefabricated short slab along the longitudinal direction of a steel rail, the slab end vibration isolating devices are arranged between each prefabricated short slab and a foundation, the slab end vibration isolating devices are arranged symmetrical to the longitudinal middle section of each prefabricated short slab, and the prefabricated short slabs are connected through shear hinges. According to the prefabricated floating slab track bed and the construction method thereof, a traditional floating slab with the length of 25 m is replaced by the prefabricated short slab with the length of 1.2-8 m, the prefabricated production and hoisting construction of the floating slab are realized, the construction speed is greatly improved, the construction difficulty is reduced, the production cost is saved, the practicality is strong, the safety and reliability are realized, the cost performance is higher, and the market application prospect is very broad.

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, such as patent No. It is a built-in floating ballast bed structure disclosed in Chinese patent ZL200410035441.1. However, the construction period of the existing floating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B1/00E01B19/00E01B29/00
Inventor 白廷辉毕湘利尹学军宋键刘加华平轶王建立刘扬黄俊飞董国宪范利辉孔祥斐薛松王乾安
Owner GERB QINGDAO VIBRATION CONTROL
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