高速铁路竖曲线对轨道动态不平顺的影响

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Abstract Research purposes: There are the long-term problems of long-wave longitudinal irregularity overrun and poor comfort in some vertical curve sections of high-speed railway. Based on a large number of dynamic detection data, the influence of vertical curve parameter setting on track dynamic irregularity was analyzed. The parameter optimization strategy of the actual vertical curve was proposed, which comprehensively considered the long-wave longitudinal irregularity and vehicle vertical acceleration.
Research conclusions: (1) When the length of the vertical curve is greater than the maximum cut-off wavelength of dynamic detection, the long-wave longitudinal irregularity presents a pair of approximately symmetrical simple harmonic waves at the beginning and end of the vertical curve, which peak direction is consistent with the actual situation. When the length of the vertical curve is less than the maximum cut-off wavelength of dynamic detection, the two peaks of this pair of simple harmonic waves in the vertical curve section will be combined into one peak, and the amplitude is about twice that of the original. (2) When the design speed is 350 km/h and the minimum vertical curve radius is 25 000 m, the vehicle vertical acceleration reaches 0.59 m/s², which exceeds the empirical value of 0.40 m/s². (3) Under the design speed of 350 km/h and 300 km/h, when the slope algebraic difference is greater than or equal to 3.3‰, the actual minimum vertical curve radius should be 25 000 m. When it is less than 3.3‰, 30 000 m should be taken. Under the design speed of 250 km/h, when the slope algebraic difference is greater than or equal to 2.8‰, the actual minimum vertical curve radius should be 20 000 m. When it is less than 2.8‰, 25 000 m should be taken. (4) The practice of fine adjustment proves that increasing the radius of vertical curve can significantly reduce the long-wave longitudinal irregularity in the vertical curve section and improve passenger comfort, which provides theoretical support and effective methods for the maintenance and repair of high-speed railway lines.

Key words： high-speed railway vertical curve long-wave longitudinal irregularity track fine adjustment dynamics simulation

Received: 18 May 2022

PACS:

U216.3

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	Articles by authors
	YANG Fei
	SUN Xianfu
	NING Yingzhi
	LIU Bingqiang
	TAN Shehui
	LIANG Chen

Cite this article:

YANG Fei,SUN Xianfu,NING Yingzhi, et al. The Influence of Vertical Curve on Track Dynamic Irregularity for High-speed Railway[J]. Journal of Railway Engineering Society, 2023, 40(9): 16-22.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I9/16

[1]	白宝英. 高速铁路线路纵断面设计标准及其应用研究[J]. 铁道标准设计, 2010(7):4-7.Bai Baoying. Designing Standard for Longitudinal Cross Section of High Speed Railway Line and Its Applications[J]. Railway Standard Design,2010(7):4-7.
[2]	Yang J, Wang K, Chen H. Characteristics of Wheel-rail Vibration of the Vertical Section in High-speed Railways[J]. Journal of Modern Transportation, 2012(1):10-15.
[3]	龙许友, 时瑾, 方文珊. 高速铁路纵断面设置对乘坐舒适性影响评价[J]. 铁道工程学报, 2015(4):48-53.Long Xuyou, Shi Jin, Fang Wenshan. Evaluation of Ride Comfort Caused by Track Vertical Alignment of High-speed Railway[J]. Journal of Railway Engineering Society, 2015(4): 48-53.
[4]	蒋登伟, 谢毅, 易思蓉, 等. 莫斯科至喀山高速铁路竖曲线半径研究[J]. 铁道标准设计, 2018(6):24-29.Xie Dengwei, Xie Yi, Yi Sirong, etc. Study on Vertical Curve Radius of Moscow-Kazan High-speed Railway[J]. Railway Standard Design, 2018(6):24-29.
[5]	吴晓峰. 杭长高铁长波高低不平顺问题的研究与分析[J]. 上海铁道科技, 2015(3): 8-9.Wu Xiaofeng. Research and Analysis on Long Wave Longitudinal Level of Hangzhou-Changsha High-speed Railway[J]. Shanghai Railway Science & Technology, 2015(3):8-9.
[6]	田新宇, 高亮, 杨飞, 等. 无砟轨道长波高低不平顺管理标准的研究[J]. 铁道工程学报, 2018(3): 26-30.Tian Xinyu, Gao Liang, Yang Fei, etc. Research on the Long-wave Longitudinal Level Irregularity Standards of Ballastless Track[J]. Journal of Railway Engineering Society, 2018(3): 26-30.
[7]	王秀丽. 运营高铁的平纵断面参数及评估方法研究[J]. 铁道工程学报, 2019(4): 15-19.Wang Xiuli. Research on the Parameters and Evaluation Method of the Flat and Longitudinal Section of High-speed Railway Operation[J]. Journal of Railway Engineering Society, 2019(4): 15-19.
[8]	田新宇, 高亮, 杨飞, 等. 基于动态短弦的无砟轨道板周期性不平顺管理标准[J]. 中国铁道科学,2020(6): 30-38.Tian Xinyu, Gao Liang, Yang Fei, etc. Management Standard for Cyclic Irregularity of Ballastless Track Slab Based on Dynamic Short Chord[J]. China Railway Science, 2020(6): 30-38.