A ballastless track embankment structure in salt-rich soft saline soil area

Abstract

Provided is a ballastless track embankment structure for a salt-rich soft saline soil area. The structure aims to effectively solve engineering roadblocks of dissolution sinking, salt expansion, corrosion and the like of a saline soil foundation and meets the requirements of control over settlement of high-speed railway ballastless tracks. The structure comprises a water and salt discharging layer arranged on the surface layer of the salt-rich soft saline soil foundation, anti-corrosion strengthening piles arranged in the salt-rich soft saline soil foundation at intervals in the longitudinal direction and the transverse direction, an anti-dissolution sinking reinforced cushion layer laid on the anti-corrosion strengthening piles, an embankment built on the anti-dissolution sinking reinforced cushion layer in a filling mode, loading berms built outside the toes of slopes on the two sides of the embankment in a filling mode, and a drainage system. The drainage system comprises drainage ditches and oblique water and salt discharging holes, wherein the drainage ditches are arranged outside the two sides of the water and salt discharging layer, and the oblique water and salt discharging holes are formed in the junctions of the water and salt discharging layer and the drainage ditches on the two sides along a line at intervals in the longitudinal direction.

Description

Technical field [0001] The invention relates to the technical field of high-speed ballastless track railway embankments, in particular to a ballastless track embankment structure in salt-rich and weak saline soil areas. technical background [0002] As China's high-speed railway goes overseas, the design of high-speed railway projects is faced with various complex geological conditions, one of which is salt-rich and weak saline soil. Saline soil refers to the general term for different degrees of salinized soil, which is widely distributed in arid and semi-arid areas and coastal areas around the world. Saline soil is different from ordinary soil, and even more special and complex than frozen soil, expansive soil and soluble loess. The saline soil foundation has undesirable characteristics such as sinkability, salt expansion and corrosiveness. Such unfavorable engineering characteristics have caused serious harm to various buildings around the world and caused huge economic losse...

AI Technical Summary

Problems solved by technology

Salt soil foundations have undesirable characteristics such as dissolution, salt swelling, and corrosion. Such adverse engineering characteristics have posed serious hazards to various buildings around the world, resulting in huge economic losses.

Images