Prefabricated track bed structure of a vibration isolation pad on a bridge

Abstract

The invention discloses a prefabricated track bed structure of a vibration isolation pad on a bridge and a construction method of the prefabricated track bed structure. The track bed structure comprises a prefabricated track plate laid on the bridge, the vibration isolation pad is fixedly arranged below the prefabricated track plate, an adjusting layer is arranged between the vibration isolation pad and the bridge surface, a through pouring hole and a limiting hole are formed in the prefabricated track plate, elastic buffer cushion layers are arranged on the inner walls of the pouring hole andthe limiting hole, the limiting hole is internally provided with a limiting boss, and the limiting boss and the adjusting layer are of an integrally-formed structure. The vibration isolation pad is arranged below the prefabricated track plate, the inner walls of the pouring hole and the limiting hole are provided with the elastic buffer cushion layer, and the limiting boss is arranged in the limiting hole, so that the track force produced during train operation is resisted, it can be ensured that the prefabricated track plate is not in rigid contact with the limiting boss, the vibration generated during train operation is reduced, and compared with a cast-in-place track bed structure, the construction efficiency is high, more construction manpower is saved, and the construction quality isstable and reliable.

Description

technical field

[0001] The invention relates to the technical field of rail transit, in particular to a prefabricated ballast bed structure of a vibration isolation pad on a bridge and a construction method thereof. Background technique

[0002] Many urban rail transit elevated lines in our country pass through the urban area, and the residences along the line are dense, in order to reduce the impact of noise and vibration on surrounding residents. Some urban rail transit bridges use vibration isolation pads to reduce the transmission of train vibration to the surrounding area. The existing ballast bed of the vibration isolation pad on the bridge is a cast-in-place structure, which requires a lot of manpower and is restricted by the proficiency of manual operation. The construction progress is slow, the precision is poor, the quality of the ballast bed is not good, and there are many ballast bed diseases during operation. However, the existing prefabricated ballast bed stru...

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