列车交会时高架轨道箱梁结构振动特性分析

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Abstract Research purposes: Aiming at the vibration problem of box girder structure in the elevated rail during train rendezvous, based on the vehicle-bridge coupling dynamics theory, a co-simulation model of vehicle-bridge coupling under various train rendezvous conditions is established, and the vibration transmission law of the box girder structure during train rendezvous is analyzed from the perspective of time domain and frequency domain, in order to provide a theoretical basis for the vibration and noise control of the elevated rail box girder structure.
Research conclusions:(1) In the double-line constant speed intersection, the displacement response of the span of the box girder structure is greater than that of the train double-line unequal speed intersection, in which the vibration displacement response during the constant speed intersection is about twice that of the one-way operation at the top and bottom plate of the box girder, and the vibration displacement response during the unequal speed intersection is about 1.66~1.72 times that of the one-way operation. (2) The local vibration frequency of the box girder in the double-line constant speed intersection is basically the same as that in one-way operation, but the acceleration response amplitude during the constant speed intersection is about twice that of the one-way operation. (3) When the train passes, the vibration displacement at the flange plate is the largest, followed by the web, and the floor plate is the smallest. (4) The research results can provide a theoretical basis for the vibration damping design of the elevated rail box girder structure.

Key words： urban rail transit box girder structure vehicle-bridge coupling structural vibration

Received: 18 March 2022

PACS:	U441
	U448.21+3

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	Articles by authors
	LUO Kun
	JIANG Xing
	DONG Yuying

Cite this article:

LUO Kun,JIANG Xing,DONG Yuying. Vibration Characteristics Analysis of Box Girder Structure of Elevated Track during Train Rendezvous[J]. Journal of Railway Engineering Society, 2023, 40(1): 28-33.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I1/28

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