A decentralized support track structure with vibration and noise reduction functions

Abstract

The invention discloses a decentralized supporting track structure with vibration reduction and noise reduction functions. The decentralized supporting track structure comprises a track beam, tracks and multiple sets of vibration reduction supporting devices, wherein the track beam comprises two track beam bodies which are arranged in parallel, the cross section of the track beam bodies is rectangular, and the extending direction of the track beam bodies is the same with the extending direction of the two tracks; a connection board is arranged between the track beam bodies and comprises a top board and a bottom board arranged between the track beam bodies, and the top board and the bottom board keep flush with the top face and the bottom face of the track beam bodies respectively; a box structure with the rectangular section is defined by the top board, the bottom board and the track beam bodies. Each vibration reduction supporting device comprises multiple staggered steel boards and rubber bodies fastened at the partial area between every two adjacent steel boards, and the multiple steel boards are evenly arranged at equal intervals. The decentralized supporting track structure with the vibration reduction and noise reduction functions increases the transverse connection stiffness and the sectional anti-bending inertia moment of the track beam, and can greatly reduce environment vibration and noise.

Description

technical field [0001] The invention relates to the field of engineering, in particular to a decentralized support track structure with the function of reducing vibration and noise. Background technique [0002] With the continuous expansion of the scale of cities in our country, the demand for the development of public transportation has become increasingly strong. A large number of new transportation lines have appeared on the city map. As the most effective way to relieve urban traffic pressure, urban rail transit has been recognized in recent years. rapid development. At present, the structural forms of rail transit mainly include slab track structure, trapezoidal track structure, and sleeper track structure. [0003] The integrity of the slab track is relatively good, but its existing problems are: the amount of concrete used is large, the cost of the project is high, and its own weight is relatively large, especially when it is used on a bridge, the weight of the uppe...

AI Technical Summary

Problems solved by technology

[0003] The integrity of the slab track is relatively good, but its existing problems are: the amount of concrete used is large, the cost of the project is high, and its own weight is relatively large, especially when it is used on a bridge, the weight of the upper part of the bridge is increased; in order to ensure the safety of the bridge , the cross-sectional dimensions of other components on the bridge will also increase accordingly, which will increase the cost of the bridge itself

[0004] The trapezoidal track structure has the advantages of light weight, and it is convenient to arrange damping elements under the trapezoidal track. The problem is that the connecting parts at both ends of the trapezoidal track connecting rods are prone to cracking during the use of the trapezoidal track structure.

When the plastic hinge stiffness degrades seriously, it will affect the restraining stiffness of the connecting rod to the track beam laterally, endangering the driving safety of the train

[0005] The problems of the sleeper track structure are: the structure is relatively scattered, which is not conducive to the overall prefabrication of the factory, and is not conducive to the arrangement of vibration-damping components

Images