A shoulder widening method for existing railway embankment

Abstract

A shoulder widening method of an existing railway embankment, the steps of which are: A. On the shoulder of the railway embankment and on the embankment slope outside the road shoulder, excavate at equal intervals along the longitudinal direction of the line for placing the transverse direction of the unit "┥" shaped component The transverse groove of the rib plate; the inner end of the transverse groove is located at the junction of the road shoulder and the ballast bed; the length of the transverse rib plate is equal to the width of the widened new road shoulder; The slope platform for placing the longitudinal panels of the unit "┥"-shaped components; C. Place the transverse ribs of the unit "┥"-shaped components in the transverse grooves, and place the longitudinal panels on the slope platform; D. On the inner side of the longitudinal panel and on both sides of the transverse rib, backfill the soil layer by layer and tamp it until the soil is flush with the road shoulder to form a widened new road shoulder. By using this method to widen the road shoulder, the stability of the subgrade soil is high, the disturbance to the soil is small, the amount of masonry is small, the construction period is short, and the cost is low.

Description

technical field [0001] The invention relates to a road shoulder widening method for existing railway roadbeds, belonging to the technical field of roadbed engineering. Background technique [0002] In recent years, due to the increase of railway speed and traffic volume, the technical requirements of some existing railways in our country can no longer meet the needs of development, resulting in common railway subgrade settlement, muddying and a series of subgrade diseases caused by it, which not only increases the railway The workload of the maintenance department seriously affects the efficiency of railway transportation and operational safety, so it is necessary to take reasonable and effective rectification measures to deal with it. Among them, shoulder widening measures are widely used: ① Existing railway roadbed has uneven settlement, and the elevation of the top surface of the roadbed is inconsistent with the design value. increase, the existing road shoulder width is...

AI Technical Summary

Problems solved by technology

However, it needs to be excavated integrally in the slope soil to form the foundation pit of the retaining wall, and the excavation volume is large; and the integral cast-in-place construction of a large-area gravity retaining wall higher than the road shoulder requires a large amount of masonry. Long construction period and high construction cost

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