8.16 STRENGTHENING OF THE RAILWAY TRACK BASE FOR HIGH-SPEED TRAIN TRAFFIC
Abstract
The article considers the strengthening of railway track foundation in unbound soils by pile driving at an angle, which provides the overall stability of the earth bed from the impact of rolling stock during high-speed train traffic.
Key words: earth bed, high-speed train traffic, bases, ballast prism, track structure, sandy soil.Strengthening the base of the railway track in high-speed train traffic.
When converting existing railways, designing and constructing new ones for high-speed traffic, a whole range of technical and economic problems must be solved. These are, first of all, the issues of train traffic safety related to the increasing forces of interaction between the track and rolling stock, increasing vibration, more intensive accumulation of residual deformations, decreasing service life of the main elements of the track structure, increasing the volume of maintenance and repair work [1, 2, 3, 4].
Construction and operation of railway lines in desert zones consisting of sand dunes is a very difficult task, and the lack of coarse and medium-grained sands in this area, as well as the lack of quality material in the form of cohesive or solid soils for the construction of railway earthwork and ballast layer makes the task even more difficult, and the transportation of these materials from other places leads to a significant increase in the estimated cost of construction. To solve these problems in the construction and operation of railway lines built in desert conditions, it is necessary to determine the factors affecting the bearing capacity of the ballast layer, eliminate them, and develop design and technological solutions that ensure stable and reliable operation of the railway track.
