Ballastless track and steel truss assembly type double-line roadbed structure thereof

Abstract

The embodiment of the invention discloses a ballastless track and a steel truss assembly type double-line roadbed structure thereof. The steel truss assembly type double-line foundation structure comprises a top plate, a bottom plate, a steel truss and a support, wherein the steel truss is supported between the top plate and the bottom plate; and one part of the support is installed on a boss on the bottom side of the top plate and connected with the top end of the steel truss, and the other part of the support is installed on a boss on the top side of the bottom plate and connected with the bottom end of the steel truss. According to the roadbed structure, the foundation land area is reduced, the foundation treatment work amount is reduced, filler is omitted, and the construction cost isreduced; compared with a reinforced concrete member, the steel truss has obvious advantages in size and performance; the bosses increase the capacity of bearing the load transmitted by the steel truss; the cross section is inverted trapezoid, the width of the bottom plate is smaller than that of the top plate, so that the structure is more stable; the steel trusses are arranged in a triangular grid manner, so that the upper load is effectively transmitted, the structural weight is reduced, and the foundation bearing capacity requirement is reduced; all the components can be prefabricated, construction and quality control are facilitated, and operation and maintenance are convenient.

Description

technical field [0001] The present application relates to the field of track technology, in particular to a ballastless track and a steel truss assembled double track foundation structure thereof. Background technique [0002] The standard form of the traditional packing subgrade of high-speed railway is trapezoidal cross section. Generally, a certain proportion of grading is adopted from below the shoulder elevation. From top to bottom, it is the surface layer of the subgrade bed, the bottom layer of the subgrade bed and the basic body of the road. Perform ground treatment. This form often occupies a large area, has a wide range of foundation treatment, and has a high demand for fillers. At the same time, with the vigorous advancement of my country's high-speed railway construction in recent years, the coverage of the high-speed railway network has continued to expand. However, in some special areas, the high-speed railway foundation Construction is restricted by various ex...

AI Technical Summary

Problems solved by technology

Although there has been some improvement in reducing the land area, there is still a great demand for high-quality fillers, which still restricts the implementation of subgrade engineering in plain areas where fillers are scarce. A large number of reinforced concrete structures are used, which not only increases the difficulty of construction, but also further increases the weight of the roadbed itself, and has higher requirements for the foundation, resulting in an increase in the amount of foundation treatment and investment

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