Precast slab assembled floating road bed

Abstract

The invention discloses a precast slab assembled floating road bed, which comprises a plurality of precast slabs paved in sequence and a plurality of connecting devices for fixedly connecting two adjacent precast slabs, wherein the connecting devices are used for connecting the precast slabs integrally in sequence to form the assembled floating road bed. Groove structures are respectively arranged at both ends of the main body of the precast slab; a bushing group is arranged at corners on both sides of the main body of the precast slab; and the connecting device comprises a horizontal connecting board structure and a side vibration isolator. Each precast slab in the precast slab assembled floating road bed disclosed by the invention is precast in a factory in a concentrated manner, the finished product is good in quality, and the plurality of precast slabs are assembled when the floating road bed is constructed so that the construction period is short and the efficiency is high; the horizontal connecting board structure in the connecting device is arranged on the surface of the precast slab, and is simple in structure and convenient to use and check; the damaged parts out of work can be replaced; and the floating road bed in settlement state can be adjusted in time.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a floating track bed assembled from prefabricated panels. Background technique [0002] The steel spring floating slab is a new type of high-grade track vibration isolation mainstream technology widely used in the subway industry in recent years. , constituting a classic "mass-spring" vibration isolation system, which has three-dimensional elasticity and stability, and can suppress and absorb solid-borne sound transmission, thereby reducing the impact of rail transit on the vibration and noise of the surrounding environment, and is used in domestic urban rail transit It has been more than ten years. [0003] During the construction of the existing steel spring floating slab track bed, the base is poured first, and then the floating slab track bed is constructed. An isolation layer is laid between the floating slab and the base to separate the base from the floating slab, and t...

AI Technical Summary

Problems solved by technology

[0003] During the construction of the existing steel spring floating slab track bed, the base is poured first, and then the floating slab track bed is constructed. An isolation layer is laid between the floating slab and the base to separate the base from the floating slab, and then the tool rail and the floating slab are used. The rail support frame adapted to the section form of the slab is used to adjust the geometric dimensions of the line. The type and standard of buckle fittings are the same as those of the ordinary integral ballast bed line. It is carried out every day, the process is complex and on-site maintenance is difficult, so there are disadvantages of many construction projects, complex processes, long construction period, and low efficiency; and in the prior art, a ballast shear force telescopic connection device is usually used between two adjacent floating ballast beds , which is to pre-embed a telescopic shear hinge in the middle of the end of the floating ballast bed. Although this device can prevent the vertical and lateral deformation of adjacent floating ballast beds from being too large, it is pre-buried in the ballast bed and cannot be inspected. Once damaged, it will fail , cannot be replaced, and will have adverse effects on the track structure and the operation of the train

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