Longitudinal and transverse combination sleeper

Abstract

The invention discloses a longitudinal and transverse combination sleeper, namely a reinforced concrete sleeper of rail transportation and solves the technical problems that compared with a sleeper line III, on the condition that the usage of reinforced concrete is not increased, a force borne module is optimized, stress and deformation are reduced, the sleeper is adaptive to heavy haul railway requirements, when the sleeper is applied to a high speed passenger line or urban rail vehicle, the stability is high, maintenance workload is low, and noise is low. According to the technical scheme, a traditional sleeper pavement method, perpendicular to steel rails, is changed, the longitudinal and transverse combination sleeper is adopted to bear the pressure of wheels; a sleeper unit III is paved on two steel rails transversely, two longitudinal sleeper units are paved below the steel rails along the steel rails, then a sleeper unit III is paved transversely, a combination is obtained, pavement is performed sequentially, elastic material fills between the bottoms of the steel rails and longitudinal sleeper top bearing grooves, load is borne through a double-layer beam composed of the longitudinal sleeper units and steel rails, a force bearing module is fine, and borne force is large.

Description

technical field [0001] The vertical and horizontal combination sleeper is a reinforced concrete component laid on the track bed to bear the pressure of the rail in rail transit. Background technique [0002] Concrete sleepers are still widely used in rail transit, especially freight railways or passenger-freight mixed railways. Slab track beds are only used in high-speed passenger dedicated lines. This is learned from Japan. European high-speed railways do not use slab track beds because of cost. High, although the amount of maintenance in the early stage is small, it is difficult to maintain after problems occur in the later stage. In the future, high-speed railways in China and Japan may not all use slab track beds, because Japan is already developing trapezoidal sleepers, and my country is also developing urban rail cars in Beijing, Shanghai, Guangzhou, and Shenzhen. As a component of the vibration-reducing and noise-reducing ballast bed, a small-scale trial is carried out....

AI Technical Summary

Problems solved by technology

[0002] Concrete sleepers are still widely used in rail transit, especially freight railways or passenger-freight mixed railways. Slab track beds are only used in high-speed passenger dedicated lines. This is learned from Japan. European high-speed railways do not use slab track beds because of cost. High, although the amount of maintenance in the early stage is small, it is difficult to maintain after problems occur in the later stage. In the future, high-speed railways in China and Japan may not all use slab track beds, because Japan is already developing trapezoidal sleepers, and my country is also developing urban rail cars in Beijing, Shanghai, Guangzhou, and Shenzhen. As a component of the vibration-reducing and noise-reducing ballast bed, a small-scale trial is carried out. Some elastic materials with relatively large damping are mainly added between the trapezoidal sleeper and the concrete structure of the lower layer to achieve a certain vibration-reducing effect. For example, the No. Trapezoidal sleepers are used in the line to cooperate with the vibration-absorbing ballast bed structure, the vibration is reduced by 20db, but the investment per kilometer increases by tens of millions of yuan

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