Frame rib-distributing structure for rail plate

Abstract

The invention provides a frame rib-distributing structure for a rail plate. The frame rib-distributing structure for the rail plate comprises a rail plate body, a prestressed structure and a frame structure, wherein the frame structure and the prestressed structure are poured in the rail plate body and the frame structure is arranged at an edge of the prestressed structure. The frame rib-distributing structure provided by the invention has the beneficial effects that the bending resistance and tensile resistance of the inner prestressed reinforcement are improved, the durability of the rail plate is promoted, the usage of the reinforcement is reduced and the material is saved.

Description

technical field [0001] The invention belongs to the field of railway tracks, and in particular relates to a frame reinforcement structure of a track slab. Background technique [0002] At present, prestressed steel bars are installed inside the ballastless concrete track slab. The prestressed steel bars are arranged horizontally and vertically or obliquely horizontally, and are provided with vertical auxiliary bars. Stressed concrete track slabs and post-tensioned prestressed concrete track slabs, but the prestressed track slabs in the prior art have the following defects: 1. The track slab at the lower part of the rail platform is a concentrated area of ​​stress distribution, and the steel bars are evenly distributed inside the track slab In some cases, after long-term use, the internal prestressed steel bars in the concrete will produce metal fatigue, which will lead to a decrease in the bending and tensile capacity of the internal prestressed steel bars. 2. Since the rai...

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Problems solved by technology

[0002] At present, prestressed steel bars are installed inside the ballastless concrete track slab. The prestressed steel bars are arranged horizontally and vertically or obliquely horizontally, and are provided with vertical auxiliary bars. Stressed concrete track slabs and post-tensioned prestressed concrete track slabs, but the prestressed track slabs in the prior art have the following defects: 1. The track slab at the lower part of the rail platform is a concentrated area of ​​stress distribution, and the steel bars are evenly distributed inside the track slab In some cases, after long-term use, the internal prestressed steel bars in the concrete will produce metal fatigue, which will lead to a decrease in the bending and tensile capacity of the internal prestressed steel bars

2. Since the rail bearing platform has a certain angle of the rail bottom slope, the rail bearing platform exerts an outward force on the contact position with the track plate. After working for a long time, the firmness of the corresponding position of the track plate will be deteriorated, which will affect the track plate durability

3. The auxiliary ribs installed vertically inside the track slab, in the production process, the vertical reinforcement is time-consuming and labor-intensive, wasting materials

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