A multi-stage prefabricated track plate

Abstract

The invention relates to the technical field of rail transit and discloses a multi-stage prefabricated track plate. The track plate comprises a lower plate and a rail bearing block, the lower plate comprises a plate body and a reserved groove arranged on the plate body for accommodating the rail bearing block, and a first reserved rib is arranged at the bottom of the reserved groove; the rail bearing block comprises a block body, the bottom of the block body is provided with a second reserved bar connected with the first reserved bar, a pre-embedded sleeve for installing a rail fastener is arranged on the block body, and a grouting hole for pouring the rail bearing block and the lower plate together is also arranged on the lower plate. The multi-stage prefabricated rail plate provided by the invention is prefabricated by separating the lower plate and the rail bearing block, so that the production and manufacture of the multi-stage prefabricated rail plate is easy to be controlled, themould precision is low, and the cycle utilization rate and the universality of the mould for producing the rail plate are increased at the same time.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to a multi-stage prefabricated track 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 emerged as the times require. 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) The ...

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

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