十字交叉型地铁车站结构的振动台试验研究

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Abstract With development of underground rail transit in recent years, cross subway stations are widely applied in practical engineering.It is of great significance to understand and improve aseismic performance of such subway stations.Here, for the first time, the shaking table test method was used to study such a subway station structure to reveal propagation characteristics of ground motion in the station area, seismic response characteristics of the station structure, especially, the effects of the station’s cross transfer linkage segment on aseismic performance of the station’s overall structure.Test results showed that propagation of seismic wave is obviously affected by the site’s characteristics, especially, seismic wave’s part with frequencies close to the predominant frequency of the site, the site response spectrum is obviously amplified; with ground motion enhancing, the amplification effect of the site can be weakened, but the distribution of the acceleration response amplification spectrum of the site is more abundant, the spectrum range of the site response is widened and the seismic risk of the station rises; at the same time, under different working conditions, the influence of the interchange segment of the station structure model on the station overall structure is basically within 1.5 times of the structure width; when the distance exceeds this range, the structure model is no longer affected by the interchange segment of the station; compared to the station with a single body, the bottom structure of the cross type station is more unfavorable to earthquake resistance; the above conclusions can provide a strong support for understanding and improving seismic response characteristics of such subway stations and the subsequent aseismic designs.

Key words： earthquake disaster mitigation shaking table test seismic response cross station cross transfer linkage segment

Received: 29 October 2020 Published: 15 May 2021

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	Articles by authors
	YU Zhongyang1
	2
	ZHANG Hongru1
	2
	QIU Yanjia1
	2
	ZHANG Ran1
	2
	LI Hao1
	2

Cite this article:

YU Zhongyang1,2,ZHANG Hongru1, et al. Shaking table tests for cross subway station structure[J]. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(9): 142-151.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I9/142

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