High-damping steel rail stabilizer and stabilizing method

Abstract

A steel rail is installed on a roadbed slab, the stabilizers are arranged on the two sides of the steel rail, each stabilizer comprises a base, a support and an elastic piece, the bases are fixedly connected to the roadbed slab, the inner sides of the elastic pieces are tightly attached to the steel rail, cavities are formed in the outer sides of the elastic pieces, one ends of the supports are embedded in the cavities of the elastic pieces, and the other ends of the supports are embedded in the cavities of the elastic pieces. And the other end of the bracket is mounted on the base. The high-damping elastic supporting devices are arranged between the two fasteners and between the roadbed slab and the steel rail, the constraint degree and integrity of the roadbed slab and the steel rail are improved, the vibration form of the steel rail is changed, continuous supporting of the steel rail is approximately achieved, and periodic abrasion of wheel rails caused by small rigidity of the fasteners and discrete supporting can be effectively restrained.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a high-damping rail stabilizer and a stabilizing method. Background technique [0002] The rapid development of the subway has caused problems such as vibration and noise pollution while relieving the urban traffic pressure. Therefore, vibration and noise reduction has become an urgent problem to be solved in the process of subway construction. The use of vibration-damping fasteners is one of the effective measures to alleviate environmental vibration and noise. Due to its relatively low price, vibration-damping fasteners have become the first choice for many low- and medium-level vibration-damping areas. The connection stiffness of the vibration damping fastener is small, the vibration isolation performance is good, and the impact energy of the wheel rail is not easily transmitted to the structure below the ballast bed, thereby achieving the purpose of reducing environmenta...

AI Technical Summary

Problems solved by technology

However, the low-stiffness design of the vibration-damping fastener improves the vibration-damping effect of the track while increasing the deformation of the track structure, reducing the restraint ability of the rail structure to the rail, and increasing the vibration response of the rail structure, especially the discreteness of the vibration-damping fastener. The support method is easier to make the secondary bending dynamic stress caused by the discrete support of the rail with increased discrete support, aggravate the high-frequency coupling vibration of the wheel and rail, and easily cause the periodic wear of the wheel-rail system, resulting in short-wave abrasion of the rail and high wheel height. The steps are not round, which further aggravates the high-frequency action of the wheel and rail

In addition, most of the current damping fasteners, due to the use of low vertical stiffness, inevitably lead to a decrease in the lateral stiffness of the fastener, resulting in weakened lateral stability of the track, which can easily lead to greater vibration when the rail is subjected to wheel-rail force. Excessive tilting of the rail leads to a significant increase in the dynamic gauge, which not only affects driving safety, but also increases wheel and rail wear

The high-frequency vibration of the wheel and rail caused by the periodic wear of the wheel and rail will not only aggravate the environmental vibration and affect the ride comfort of the train, but also cause the fatigue damage of the train and track structure, such as the fracture of the elastic strip, the failure of the fastener, the damage of the train axle box, Frame cracks and other problems have caused huge hidden dangers to train safety

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