Ballastless track structure settlement lifting device and lifting method thereof

Abstract

The invention discloses a ballastless track structure settlement lifting device and a lifting method thereof. The device is used for lifting the ballastless track plate, and comprises screw rods embedded in two sides of the ballastless track plate and arranged at intervals along an extension direction thereof; the ballastless track plate has pre-burying holes for pre-burying the screw rods, the pre-burying holes vertically pass through the allastless track plate and extend downward to a concrete cushion layer, the screw rods are sleeved with nuts which are threadably connected with the screw rods, the outer walls of the screw rods are sleeved with sleeves, mortar columns are poured into annular gaps between the outer walls of the sleeves and the inner walls of the pre- burying holes, the mortar columns are integrated with the ballastless track plate by being cemented with the inner walls of the burying holes, and the bottoms of the mortar columns are in contact with the top end faces of the nuts. As the ballastless track structure settlement lifting device is not limit by the ballastless track structure and the operation space, the ballastless track structure settlement lifting device is easy to operate, has high lif accuracy, good controllability and high efficiency, and can effectively solve the settlement problem of ballastless track in a special section.

Description

technical field [0001] The invention belongs to the technical field of tracks, and in particular relates to a ballastless track structure subsidence lifting device and a lifting method thereof. Background technique [0002] The ballastless track structure of high-speed railways, general-speed railways or subways has high requirements on the smoothness of the track. However, in the actual process, the track is prone to settlement and offset problems. The common method is to restore the track line by adjusting the fasteners. However, once the settlement exceeds the adjustment capacity of the fastener, other methods must be used to restore the elevation and plane position of the track. [0003] At present, domestically, some researches have been done on the subgrade settlement problem of high-speed railways and some new solutions have been proposed. For example, the Chinese invention patent with the publication number CN 103074828A discloses an injection method to lift the subs...

AI Technical Summary

Problems solved by technology

However, the lower part of the ballastless track structure in the tunnel is a dense concrete structure, and the track structure and the track structure foundation are closely combined without gaps, so it is difficult to inject grouting materials; (Road-tunnel) transition section, due to the excessive size of the end thorns, there are difficulties in drilling and grouting; in addition, in the bridge or frame bridge section, the ballastless track is in direct contact with the top surface concrete, so the existing grouting lifting technology cannot It is not applicable to the lifting of subsidence ballastless track in the above-mentioned areas

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