Slag-free orbit reinforced concrete pile net structure roadbed and construction method thereof

Abstract

The present invention discloses a lattice pile structure roadbed for ballastless track reinforcing steel concrete and the construction method thereof. The roadbed comprises reinforcing steel concrete piles (20) arranged transversely and vertically along the roadbed, a reinforcing cushion layer (10) laid above the reinforcing steel concrete piles (20), and a soil roadbed (30) filled and constructed above the reinforcing cushion layer (10). The present invention takes full advantage of the common combined action principle of the piles, the net and the soil to meet the requirements of the strength and the settling deformation of the ballastless track, and to overcome the disadvantages that the settlement quantity and the differential settlement quantity of the high road embankment structure is large and the extent of the dynamic influence of the low road embankment structure is large, and the present invention has the advantages of strong bulking property, good stability, being solid and durable, small track deformation, small accumulation deformation, etc., and is favorable to the high-speed driving; the maintenance workload can be greatly reduced, the intensity of the maintenance operation can be lowered, and the maintenance operation condition can be improved. The construction process is simple, the construction cost can be effectively reduced, and the present invention meets the requirement of the environmental protection, therefore, the present invention has wide application prospect.

Description

technical field [0001] The invention relates to a railway subgrade and a construction method thereof, in particular to a high-speed railway ballastless track subgrade and a construction method thereof. Background technique [0002] With the continuous increase of train speed, new requirements are put forward for the form of subgrade structure. In the past, ballastless tracks of high-speed railways were mostly laid in tunnels, elevated structures and bridges, and later gradually expanded to soil roadbeds. [0003] Since the high-speed railway puts forward new requirements for the high smoothness, stability, and durability of the line, there are strict restrictions on the total settlement, post-construction settlement and differential settlement of the subgrade foundation. For the traditional subgrade structure, when the high embankment is used, the total settlement and post-construction settlement are large, and the differential settlement is difficult to control; while the ...

AI Technical Summary

Problems solved by technology

[0004] my country's high-speed railway construction scale is large, the line is long, and the regional geological conditions are complex. If the bridge structure is used, the cost will be too high, which will seriously affect the development speed of high-speed railway

Images