Directly-buried fastener and construction method thereof

Abstract

The invention relates to the technical field of rail construction, and especially relates to a directly-buried fastener and a construction method thereof. The directly-buried fastener comprises a baseplate and supporting columns, the base plate comprises an upper plate body and a lower plate body, the size of the lower plate body is smaller than that of the upper plate body, the upper plate body,the lower plate body and the supporting columns are integrally connected, the bottom of the upper plate body is connected with the lower plate body, and the bottom of the lower plate body is connected with the two supporting columns arranged in an aligned mode. The size of the lower plate body is smaller than that of the upper plate body, quick-dry cement or an adhesive can be injected into a lower plate body mounting groove of a ballast bed, the two supporting columns can be respectively mounted in two supporting column mounting holes of the ballast bed, the lower plate body is mounted in alower plate body mounting groove of the ballast bed, at the moment, the bottom face of the upper plate body makes contact with the top face of the ballast bed, the lower plate body and the supportingcolumns play a role in positioning, and the upper plate body can be placed at the designated position of the ballast bed, so the installation error of the upper plate body is reduced, then the installation error of a steel rail on the upper portion of the upper plate body is reduced, and the installation precision of the steel rail is improved.

Description

technical field [0001] The invention relates to the technical field of track construction, in particular to a direct-buried fastener and a construction method thereof. Background technique [0002] The existing direct-buried fasteners mainly have the following problems: 1. Due to the on-site pouring of the under-rail structure, the nylon sleeve is prone to skew during the pouring process; 2. It is easy to pour the fastener body into the under-rail structure by using the rail-frame method for construction , thus affecting the follow-up maintenance; 3. The lateral force capacity of the pit in the small radius curve section is insufficient, and the nylon casing is easily damaged under the action of a large lateral force, which leads to the failure of the fastener system. Contents of the invention [0003] The object of the present invention is to provide a direct-buried fastener and its construction method according to the deficiencies of the above-mentioned prior art. The ny...

AI Technical Summary

Problems solved by technology

[0002] The existing direct-buried fasteners mainly have the following problems: 1. Due to the on-site pouring of the under-rail structure, the nylon sleeve is prone to skew during the pouring process; 2. It is easy to pour the fastener body into the under-rail structure by using the rail-frame method for construction , thus affecting the follow-up maintenance; 3. The lateral force capacity of the pit in the small radius curve section is insufficient, and it is easy to cause damage to the nylon sleeve under the action of a large lateral force, resulting in the failure of the fastener system

Images