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Manufacturing method of multi-stage prefabricated rail plates

A manufacturing method and track slab technology, which is applied in the field of rail transit, can solve the problems of high cost of prefabricated molds, difficult precision control, and low mold versatility, so as to reduce maintenance requirements and costs, reduce production costs, and solve poor mold versatility Effect

Inactive Publication Date: 2019-02-19
BEIJING JIUZHOUYIGUI SHOCK & VIBRATION ISOLATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the track prefabricated parts are large-volume and large-tonnage parts, the following problems usually occur when most domestic track slabs are prefabricated in factories: (1) The cost of prefabricated molds is high, and the mold versatility is low
(2) Prefabricated molds require high stability and difficult precision control
(3) Problems such as long maintenance period and low mold cycle utilization rate indirectly affect the construction cost and construction progress of rail transit, etc.
In the current prefabrication of track slabs, the "top-down" pouring method is often adopted. The embedded casing for the rail part is located at the bottom of the mold, and the bottom of the track slab is located at the upper part of the mold. When the concrete is poured and vibrated, it will be skewed, which will lead to the failure of the normal installation of the fasteners; (2) the deformation of the track plate is large, resulting in the deviation of the position of the embedded casing; (3) the deformation during the use of the mold will lead to Part of the position that requires high-precision control is unqualified

Method used

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  • Manufacturing method of multi-stage prefabricated rail plates
  • Manufacturing method of multi-stage prefabricated rail plates
  • Manufacturing method of multi-stage prefabricated rail plates

Examples

Experimental program
Comparison scheme
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Embodiment 2

[0076] This embodiment is basically the same as Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1 will be described:

[0077] Such as Figure 8-14 As shown, in this embodiment, the number of reserved grooves 12 is multiple, and the plurality of reserved grooves 12 are distributed in a row along the longitudinal direction of the track on the lower plate 1, and at both ends of each block 21 respectively A pre-embedded casing 23 for installing rail fasteners is provided. Three grouting holes 14 are arranged on both sides of each reserved groove 12 . It should be noted that those skilled in the art should understand that in some other embodiments of the present invention, grouting holes 14 can also be provided on one side of the reserved groove 12, and in addition, the number of grouting holes 14 can also take oth...

Embodiment 3

[0079] Such as Figure 15 to Figure 18 As shown, the present invention also discloses a method for manufacturing the above-mentioned multi-stage prefabricated track slab, which includes the following steps:

[0080] For the prefabrication of the lower plate, a reserved groove is arranged on the lower plate, and the bottom of the reserved groove is provided with a first reserved rib,

[0081] Prefabrication of the rail block, the bottom of the rail block is provided with a second reserved rib for connecting with the first reserved rib;

[0082] The prefabricated lower slab and the prefabricated rail bearing blocks are poured together.

[0083] Specifically, the prefabrication of the lower slab includes:

[0084] S11: Preparation of the lower plate mold and hanger: in this step, the lower plate mold is preferably cleaned and oiled;

[0085] S12: Binding of the reinforcement cage of the lower slab: When the reinforcement cage of the lower slab is bound, the reinforcement cage ...

Embodiment 4

[0100] This embodiment is basically the same as Embodiment 3. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 3 will not be described, and only the differences between this embodiment and Embodiment 3 will be described:

[0101] In this embodiment, the prefabrication of the rail block is the same as that of the rail block in Embodiment 3. After the prefabrication of the rail block is completed, the prefabricated lower plate and the prefabricated rail block are combined and poured synchronously. Include the following steps:

[0102] (1) lower plate mold, hanger preparation: in this step, preferably the lower plate mold is cleaned and oiled;

[0103] (2) Binding of the reinforcement cage of the lower plate: when the reinforcement cage of the lower plate is bound, the reinforcement cage extends out of the first reserved rib at the position of the reserved groove;

[0104](3) Assembly of the reinforcement cage of t...

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Abstract

The invention relates to the technical field of rail traffic, and discloses a manufacturing method of multi-stage prefabricated rail plates. The method comprises the followings step that a lower plateis prefabricated, a reserved groove is formed in the lower plate, and a first reserved rib is arranged at the bottom of the reserved groove; a rail bearing block is prefabricated, and a second reserved rib used for being connected with the first reserved rib is arranged at the bottom of the rail bearing block; and the prefabricated lower plate and the prefabricated rail bearing block are poured together. According to the manufacturing method of the multi-stage prefabricated rail plates, the production and manufacturing of the rail plates can be made easier to control, the precision requirement on a mold is lower, and meanwhile, the cycle utilization rate and universality of the rail plate production mold are increased.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a method for manufacturing a multi-stage prefabricated rail slab. Background technique [0002] In recent years, rail transit has been vigorously developed in major cities in my country. According to different urban construction conditions and special needs, various types of rail structures have also been used. Due to the high construction precision requirements of the track structure, there are uncontrollable human factors in the on-site construction process, which leads to the substandard track structure and various diseases. [0003] At present, in the construction of urban rail transit in my country, it has become a new trend to prefabricate most important concrete structures in factories. Because the track prefabricated parts are large-volume and large-tonnage parts, the following problems usually occur when most domestic track slabs are prefabricated in factories: (1)...

Claims

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Application Information

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IPC IPC(8): B28B1/00B28B1/14B28B23/02E01B1/00
CPCB28B1/002B28B1/14B28B23/02E01B1/00
Inventor 房海元高淑华邵斌丁德云孙方遒任奇
Owner BEIJING JIUZHOUYIGUI SHOCK & VIBRATION ISOLATION
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