Structure of cut-off foundation bed for ballastless track with cut-off type of ship trough in medium-strong saline soil area

Abstract

The invention relates to a head chute separated type ballastless track cutting bed structure for middle-strong salinized soil soil areas, in order to solve the technical problems of the high speed railway ballastless track design and meet the deformation control and durability requirements for high speed railway ballastless tracks. The head chute separated type ballastless track cutting bed structure comprises reverse L-shaped protecting layers, longitudinal seepage salt-removing blind gutters, base separating layers and drainage ditches, wherein the reverse L-shaped protecting layers are arranged on the slopes on the two sides of the bed excavation; the longitudinal seepage salt-removing blind gutters are arranged at the slope toes of the reverse L-shaped protecting layers on the two sides of the bed; the base separating layers are arranged above the bed bottom and the longitudinal seepage salt-removing blind gutters; a lower structural layer of the bed bottom, an upper structural layer of the bed bottom, a bed separating layer and a bed surface layer are successively paved above the base separating layers from bottom to top; the drainage ditches are arranged on the two sides of the upper structural layer of the bed bottom.

Description

technical field [0001] The invention relates to the technical field of ballastless track subgrades of high-speed railways, in particular to a ship-trough partition type ballastless track cutting subgrade bed structure in medium-strong saline soil areas. technical background [0002] Overseas high-speed railway engineering design still faces various complex geological conditions, and saline soil is one of them. Saline soil is a general term for a type of soil with different degrees of salinization, which is widely distributed in arid, semi-arid and coastal areas of various countries. Saline soils are classified according to their salt content: weak, medium, strong, and ultra-saline soils. [0003] Generally speaking, the mechanical properties of medium-strong saline soil in the range of ballastless track cutting foundation bed, such as salt content, salt swelling, and dissolution, cannot meet the design requirements of the foundation bed, and measures such as replacement and...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a ship channel partition type ballastless track cutting foundation bed structure in medium-strong saline soil areas to solve the technical problems faced in the design of high-speed railway ballastless track cuttings in medium-strong saline soil areas , to meet the high-speed railway ballastless track deformation control and durability requirements

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