Bi-block point-supported floating slab track bed structure

Abstract

The invention relates to a bi-block point-supported floating slab track bed structure which comprises a base, a plurality of floating slabs, a plurality of steel spring vibration isolators, a plurality of bi-block sleepers and two steel rails. The plurality of floating slabs are positioned on the base in a track extending direction; each of the floating slabs is internally provided with the corresponding steel spring vibration isolators; the plurality of steel spring vibration isolators are arranged in the floating slabs at intervals in two rows in the track extending direction; the bottom parts of the plurality of steel spring vibration isolators are separately and fixedly connected to the base; the floating slabs are not in contact with the base; the bi-block sleepers are pre-embedded inthe floating slabs at intervals in the track extending direction; the two steel rails are arranged in parallel on the plurality of bi-block sleepers and arranged in the track extending direction; andthe two steel rails are fixedly connected to the bi-block sleepers through fasteners. The bi-block point-supported floating slab track bed structure adopts the bi-block sleepers, thereby facilitatingthe assembly of a track panel and the erection of reinforcing mesh in the floating slabs, and improving the construction accuracy and construction efficiency.

Description

technical field [0001] The invention relates to the technical field of urban rail transit, in particular to a double-block point-supported floating slab track bed structure. Background technique [0002] At present, the track structure of domestic urban rail transit projects in advanced and special vibration-reduction sections mostly adopts floating slab integral ballast, but there are the following disadvantages: [0003] (1) Ordinary steel spring floating slab ballast bed is limited by the height of the track structure or the factors of the second-stage dead load. Most of them use short sleepers or no sleeper track structures. Poor contact between wheel and rail leads to rail corrugation, increased vibration and noise, making it difficult for individual sections to meet the requirements of environmental impact assessment, and brings great difficulties to later maintenance and repairs. [0004] (2) The workload of construction adjustment is heavy, and it is difficult to as...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned problems existing in the prior art, the present invention effectively combines double-block sleepers for high-speed rail with steel spring track beds for urban rail transit, and provides a double-block sleeper for high-end and special vibration-reducing sections of urban rail transit engineering. Point-supported floating slab track bed structure to maximize the improvement of the problem that the rail bottom slope does not meet the design requirements

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