线路关键点对400 km/h高速铁路纵断面参数设计影响

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Abstract Research purposes: The planning and design of 400 km/h high-speed railway is an important goal for the construction and development of high-speed railway in China. Currently, there has been no study on the design standard of 400 km/h high-speed railway vertical parameters. Under the condition of driving safety and passenger comfort in high-speed train, this paper designs and verifies the vertical parameters of 400 km/h high-speed railway, so as to provide a theoretical basis for subsequent engineering application.
Research conclusions: (1) Under the conditions of same algebraic difference between adjacent gradients and length of tangent between curves, the maximum train vertical vibration acceleration value decreases with the increase of the vertical curve radius. The minimum vertical curve radius of 400 km/h high-speed railway is recommended to be 30 000 m. (2) When the vertical curve radius is greater than or equal to 20 000 m, the maximum value of the vertical vibration acceleration of the train body is little affected by the algebraic difference between adjacent gradients. (3) The vertical vibration acceleration of the car body gradually dissipates as the length of tangent between curves increases, and the superimposed vibration decreases. It is recommended that the minimum length of 400 km/h high-speed railway is 200 m. (4) This research method can provide technical support for the vertical parameters design of 400 km/h high-speed railway.

Key words： 400 km/h high-speed railway vertical parameters design line key points dynamic simulation

Received: 30 November 2021

PACS:

U212.31

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	Articles by authors
	HE Qing
	XU Shuangting
	GAO Tianci
	HU Jianping
	ZHU Ying
	WANG Ping

Cite this article:

HE Qing,XU Shuangting,GAO Tianci, et al. The Influence of Line Key Points on Vertical Parameters Design of 400 km/h High-speed Railway[J]. Journal of Railway Engineering Society, 2022, 39(11): 25-32.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I11/25

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