Ballastless turnout slab, production process of ballastless turnout slab, ballastless turnout bed and ballastless turnout rail

Abstract

The invention relates to a ballastless turnout slab, a production process of the ballastless turnout slab, a ballastless turnout bed and a ballastless turnout rail. The ballastless turnout slab comprises a turnout slab casing and a structural steel frame, wherein the turnout slab casing comprises a casing body 1 and a rail carrying table 2, the structural steel frame comprises a steel frame body 6 and a reinforced steel bar structure 7, and a grounding terminal 8 is arranged on the steel frame body 6. The production process of the ballastless turnout slab comprises the steps including sample placing, casting, maintenance and the like. The ballastless turnout bed comprises more than three turnout slab units and a point switch installing groove 14. The ballastless turnout rail comprises a steel rail system, a turnout bed, a concrete layer 15, a geotechnical cloth separation layer 16 and a base, wherein the steel rail system comprises a straight steel rail 17, a sharp rail 18, a buckle element and a point switch, and the base comprises a flat bottom and a lug boss 19. The ballastless turnout slab, the ballastless turnout bed and the ballastless turnout rail have the characteristics that the pavement precision is high, the installation efficiency is high, the difficulty is low, the operation is easy, the maintenance can be realized, and the like. The ballastless turnout slab, the ballastless turnout bed and the ballastless turnout rail can adapt to various geological conditions.

Description

technical field [0001] The present invention relates to a ballastless turnout plate and its production process, as well as a ballastless turnout bed and a ballastless turnout track, in particular to a subway slab-type single-opening ballastless turnout plate and its production process, as well as a ballastless turnout bed and a ballastless turnout track, belonging to Field of railway tracks. Background technique [0002] At present, the existing subway ballastless track turnout bed structure generally adopts an integral embedded structure. This structure usually includes prefabricated sleepers and cast-in-place concrete. During construction, sleepers, fasteners, and turnout rails need to be pre-connected into rail rows. , move the rail row to the bracket by hoisting machinery, under the bracket is the bound ballast bed steel bar, then adjust with the rail surface elevation and track center line as the control baseline, fix the bracket after reaching the corresponding accurac...

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a new subway track scheme, which solves the problems that the support is not firmly fixed during the construction of the integrally buried turnout, the concrete generates buoyancy on the rail row, and the vibrating force disturbs the fixed support, which affects the accuracy of the turnout, and the slab turnout bed and the base It is two independent structures, which solves the problem of difficult maintenance of the integral buried turnout due to foundation settlement

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