Piston-type particle-damping energy-dissipation vibration-reduction railway ballast

Abstract

The invention discloses a piston-type particle-damping energy-dissipation vibration-reduction railway ballast. The piston-type particle-damping energy-dissipation vibration-reduction railway ballast comprises a concrete block and piston-type particle-damping elements buried inside the concrete block; the piston-type particle-damping elements comprise shells, and damping particles and metal balls are arranged inside the shells; the metal balls are fixedly connected with the concrete block through metal wires. The piston-type particle-damping energy-dissipation vibration-reduction railway ballast has the advantages that the piston-type particle-damping energy-dissipation vibration-reduction railway ballast is applied to a transition section of a rail, dynamic characteristics of the transition section can be effectively improved, dynamic loads transferred by the railway ballast to a roadbed can also be effectively reduced, roadbed settlement is reduced, the mutual dynamic effect between a vehicle and a route is not obviously changed when a train passes through the transition section at high speed, and deterioration of the route state cannot be quickened. In addition, the piston-type particle-damping energy-dissipation vibration-reduction railway ballast does not influence tamping and screening of normal line maintenance.

Description

technical field [0001] The invention belongs to the technical field of rail transportation, and in particular relates to a ballast for piston-type particle damping, energy consumption and vibration reduction. Background technique [0002] Since entering the 21st century, my country's rail transit field has developed rapidly, especially the development of high-speed railways. In the process of continuous construction of high-speed railways and in order to meet the needs of high-speed railways, the problems of railway line transitions (the transition between roadbed and bridges, and roadbeds and tunnels) have begun to emerge, and have been continuously valued by construction and design units. The appropriateness of the handling of the transition section determines the operating speed of the high-speed railway and the comfort of passengers to a certain extent. [0003] The main problem of the transition section is the geometric irregularity and stiffness irregularity of the tr...

AI Technical Summary

Problems solved by technology

These treatment methods have their own applicability and disadvantages. For example, the roadbed treatment method will bring potential roadbed disease risks during operation.

At the same time, due to the construction between the bridge abutment and the roadbed in the transitional section of the road and bridge, the subgrade in the transitional section cannot be fully compacted, which makes the transitional section more prone to settlement

Moreover, the special geological conditions in our country do not have a large amount of high-quality roadbed fillers, which also brings difficulties to the traditional treatment methods.

Images