Novel subway vibration reduction track structure and vibration absorber device

Abstract

A novel subway vibration reduction track structure and a vibration absorber device are disclosed. The novel subway vibration reduction track structure comprises a pouring type shield tunnel foundation, a track plate is arranged above the shield tunnel foundation, two steel rails which are oppositely arranged are arranged on the track plate, a plurality of rectangular openings used for vibration reduction installation are formed in the inner bottom of the shield tunnel foundation, and foundation seats are arranged in the rectangular openings. The foundation seats are connected with an upper disc through a main vibration reduction assembly, and the upper disc is connected with the bottom of the track plate through a locking piece. The prefabricated track plate is placed on the foundation, the main vibration reduction equipment is installed in the gap between the foundation and the track plate through the multiple assembling openings formed in the track plate, and by adjusting a nut ring, vibration absorption springs in the main vibration reduction equipment and the magnetic layers which are arranged in the main vibration reduction equipment and repel each other in magnetism achieve the effect of effectively counteracting the vibration force of the track plate and the foundation generated during vibration; the effective installation of the vibration absorber can be ensured while the installation of the track plate is not influenced.

Description

technical field [0001] The invention relates to the technical field of rail transit vibration reduction, in particular to a novel subway vibration reduction track structure and a vibration absorber device. Background technique [0002] The underground railway is an inevitable means of transportation for urban modernization. It has the advantages of large capacity, fast speed, safety and reliability, and accurate time. It has become a feasible measure to solve urban traffic congestion, noise and air pollution; on the other hand, the underground railway produces The impact of vibration on the environment is a problem that is generally valued by countries all over the world. The vibration and noise generated during the operation of subway trains all come from the vibration of different frequencies of various structures in the wheel-rail system; some of these vibrations pass through the air or surrounding structures. The reflection of the noise diffuses in the form of noise. Acc...

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Problems solved by technology

[0003] In order to avoid the impact of rail vibration on urban noise, panels of sound-absorbing materials are often laid in subway passages to effectively absorb vibrations, but the effect is minimal. The main causes of vibration are rails and track slabs and track slabs and foundations. The vibration caused by the frequent contact between them, so it is necessary to solve the vibration generated by the rail when the vehicle passes by from the source. At present, during construction, the track slab is often scheduled according to certain specifications, and then moved to the tunnel for assembly. The moving space of the slab in the tunnel is limited, which makes it difficult to install the vibration damping equipment at the bottom, resulting in poor vibration damping effect between the track slab and the foundation. If the track slab is assembled at a small distance, the number of connection points in the total length of the track will increase. While affecting the progress, it will cause the adjacent tracks to generate staggered vibration and noise when they are successively compressed. Therefore, a new subway vibration-reducing track structure and vibration absorber device is proposed for this purpose.

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