Widening reinforcing structure tightly adjacent to existing ballastless track roadbed

Abstract

The invention provides a widening reinforcing structure tightly adjacent to an existing ballastless track roadbed. The influences of stress and deformation on an existing ballastless track railway roadbed body and a base due to a widening roadbed filling load and a train load are effectively eliminated, and meanwhile the problems about the foundation bearing capacity and settlement of a newly-built widening roadbed are solved. The widening reinforcing structure comprises the existing ballastless track roadbed and a newly-built widening filling roadbed located on one side of the ballastless track roadbed in the transverse direction. The newly-built widening filling roadbed comprises a reinforced concrete tray type retaining wall, reinforced concrete pile foundations and a foam light soil filling layer. The reinforced concrete tray type retaining wall is located on one side of the existing ballastless track roadbed in the transverse direction and extends in the direction of a line. The reinforced concrete pile foundations are arranged in a foundation of the newly-built widening filling roadbed in rows at intervals in the direction of the line, and the upper ends of the reinforced concrete pile foundations are in rigid connection with the reinforced concrete tray type retaining wall. The foam light soil filling layer is built above the reinforced concrete tray type retaining wall in a filled manner.

Description

technical field [0001] The invention relates to a railway subgrade, in particular to a side width reinforcement structure adjacent to the existing ballastless track subgrade. Background technique [0002] In the construction process of railways and highways, especially in the process of railway construction, there are many cases where it is necessary to connect rails or side widths on existing high-speed railways. Filling loads and train loads on side widths will cause existing ballastless tracks to Post-construction settlement, because high-speed ballastless track railways have very high requirements for settlement, and there are problems of insufficient adjustment of fasteners or loss of reserves, and at the same time, the operation of existing lines limits the foundation reinforcement treatment under existing lines, so there is an urgent need for a The new structure solves such problems. Contents of the invention [0003] The technical problem to be solved by the prese...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a side width reinforcement structure adjacent to the existing ballastless track subgrade to effectively solve the stress and deformation of the side width subgrade filler load and train load on the existing ballastless track railway road basic body and base At the same time, it solves the foundation bearing capacity and settlement problems of the newly built side-width subgrade

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