Floating slab and its floating track bed

Abstract

The invention belongs to the field of the rail transport, and in particular to track bed slabs and a floating track bed formed by track bed slabs. The floating slab and floating track bed thereof comprise a floating slab body, an installing reserved space or a jointing sleeve matched with an elastic isolation mounting is arranged on the floating slab body, the connecting end of the floating slab body is provided with a first assembly hole and a second assembly hole, and the first assembly hole and the second assembly hole are arranged in the vertical plane of the floating slab body; the first assembly hole is inclined and penetrates through the floating slab body, an opening in the upper portion is arranged on the top face of the floating slab body, and an opening of the lower portion is arranged in the connecting coordinated face of the floating slab body; the second assembly hole is inclined and penetrates through the floating slab body, an opening of the upper portion is arranged in the connecting coordinated face of the floating slab body, the lower portion of the second assembly hole is provided with an assembly connector, and the assembly connector is located on the bottom of the floating slab body. The floating slab has the advantages that the structure is simple, the manufacture is easy, and the use is convenient. By means of the floating track bed formed by connecting the floating slabs, the efficiency of construction is high, the post-maintenance is convenient, the vibration performance is more excellent, the stress is more reasonable, and the service life is longer.

Description

technical field [0001] The invention belongs to the field of rail transportation, and in particular relates to a ballast bed slab and a floating ballast bed formed therefrom. Background technique [0002] With the development of society and the progress of science and technology, the importance of rail transit has become increasingly prominent. In the construction of rail transit, the vibration and noise problems generated during vehicle operation must be solved, otherwise it will seriously affect the quality of life of surrounding residents and endanger the safety of surrounding buildings. At the same time, the stability, safety and service life of rail transit itself will also be affected. affected. In order to control the vibration and noise generated in the operation of rail transit, researchers have developed many vibration and noise reduction products, among which the steel spring floating ballast bed technology is recognized as one of the technologies with the best v...

AI Technical Summary

Problems solved by technology

The floating slab track bed composed of prefabricated short slabs is connected in this way. At present, the telescopic shear hinge is used, but there are the following problems: Although the telescopic shear hinge can transmit the shear force well, it can prevent the floating ballast bed from collapsing. The difference in vertical and lateral deformation between adjacent prefabricated short slabs is too large, but their ability to resist bending moments is weak, resulting in a strong "seesaw" effect of the prefabricated short slabs when the train passes, that is, the prefabricated short slab ends at the bogie Sinking, the other end is on the rocker, the force of the prefabricated slab body, elastic vibration isolation device and steel rail is relatively large

In order to overcome the "see-saw" effect, some plans have added an elastic vibration isolation device between the ends of the slabs. Although the "see-saw" effect can be overcome to a certain extent, when the entire floating track bed is lifted and leveled, adjustments are added. link, thus restricting the speed of construction, increasing the cost of construction, and objectively restricting the large-scale application of such technologies

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