High-speed railway roadbed uneven settlement reinforcement lifting and leveling method

Abstract

The invention relates to a high-speed railway roadbed uneven settlement reinforcement lifting and leveling method. The high-speed railway roadbed uneven settlement reinforcement lifting and leveling method comprises the following steps: S1, a reinforcement area is formed, specifically, the reinforcement area is formed in an embankment below a railway track through static pressure grouting; S2, curtain walls are formed, specifically, the curtain walls are formed on the positions, close to the slope toe, of the two sides of the embankment through static pressure grouting; and S3, lifting and leveling are conducted, specifically, an area between the reinforcement area and the curtain walls serves as an acting force pushing area, a static pressure grouting method is adopted, and by grouting the acting force pushing area, the upward grouting pressure is generated to evenly lift the embankment reinforcement area. The high-speed railway roadbed uneven settlement reinforcement lifting and leveling method has the advantages that a technology is simple, operability is high, interference is avoided, and the construction efficiency is high.

Description

technical field [0001] The invention relates to the technical field of repairing uneven settlement of high-speed railway subgrades, in particular to a method for reinforcing, lifting and leveling uneven subsidence of high-speed railway subgrades. Background technique [0002] At present, my country's high-speed railway network is criss-crossed and has become one of the most commonly used means of transportation for people. refer to figure 1 The track of the high-speed railway includes an embankment 2 on the subgrade 1, on which a track slab 22 is arranged, on both sides of the track slab 22 catenary columns 21 are arranged, and two pairs of steel rails 23 are arranged on the track slab 22. After the high-speed railway was put into operation, due to the long service time of some lines, complex geological conditions, poor quality control during the construction process, and regional settlement, the lower foundations of the local high-speed tracks, such as subgrades and founda...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: the method of high-pressure grouting mainly utilizes the effect of grouting pressure to lift the track structure. During the lifting process, the foundation bed may be partially bulged by the grouting pressure, and the track cannot be lifted evenly; at the same time, because the two sides are soft soil foundations, the grout will spread to both sides during high-pressure grouting, which not only wastes materials , and will reduce the pressure of grouting, slow down the lifting and leveling speed, and reduce the construction efficiency

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