Prefabricated integral assembled type track for shield tunnel and construction method

Abstract

The invention discloses a prefabricated integral assembled type track for a shield tunnel and a construction method. The prefabricated integral assembled type track for the shield tunnel comprises a track system and a foundation system; the track system and a foundation system are both prefabricated and assembled, wherein the track system comprises steel rails, fasteners and a frame type track slab; the foundation system comprises a left base, a right base, a middle adjusting pad and buffering damping pads; the left base and the right base are connected to a tunnel segment through positioningblocks so as to realize the positioning of the bases; the middle adjusting pad is arranged between the left base and the right base; arc grooves are formed in the upper surfaces of the bases; the buffering damping pad are arranged in the arc grooves; the frame type track slab is arranged on the foundation system and is positioned. The construction method comprises the steps of prefabricating the left base, the right base and the frame type track slab, mounting the left base and the right base, arranging the middle adjusting pad, arranging the buffering damping pads in the arc grooves of both the left base and the right base, placing the frame type track slab on the buffering damping pads and mounting steel rails.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a prefabricated integrally assembled track of a shield tunnel and a construction method thereof. Background technique [0002] At present, cast-in-place integral ballast is mainly used in urban rail transit shield tunnels. The construction process of the cast-in-place monolithic ballast bed is complicated and the construction progress is slow, which is difficult to meet the requirements of urban rail transit construction. In addition, the cast-in-place construction will easily lead to poor working environment in the tunnel, which will bring many adverse effects on the physical and mental health of construction workers. Cast-in-place construction requires a large number of operators, and the labor is heavy. However, with the development of society, the number of human resources for heavy manual labor has dropped sharply, and the cost has risen sharply. Based on the above re...

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Problems solved by technology

[0003] Chinese patent application CN201710546154.4 discloses a prefabricated track laying device and method for urban rail transit engineering. The track structure disclosed in the patent includes foundation, flexible materials, self-compacting concrete, assembled track slabs, fasteners and rails, and is prefabricated Construction, but self-compacting concrete still needs to be poured during construction, and complete assembly construction has not been realized

Chinese patent application CN107401091A discloses a prefabricated track structure and its construction method. The prefabricated track of the patent disclosure includes steel rails, fasteners, prefabricated track slabs, buffer adjustment layers and prefabricated bases. The horizontal and vertical positioning of the slab is relatively difficult, and the adaptability is relatively limited when the tunnel construction deviates

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