Damage mitigation and maintenance enhancement of rock ballast: A novel tamping method

IF 3 2区工程技术 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Damage Mechanics Pub Date : 2026-06-15 DOI:10.1177/10567895261460588

Yuze Wang, Shunwei Shi, Jiangwei Xue, Yue Liu, Liang Gao

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引用次数: 0

Abstract

Tamping is the foremost technique used in rock ballast maintenance. With the goal of minimizing tamping-induced degradation of rock ballast and enhancing maintenance effects, a novel tamping method with a smart tamping tine was developed. First, the new tamping machine was designed, allowing automatic toggling between retracted and extended states of the tine structure during tamping. Subsequently, a model of ballasted track subjected to tamping was established and validated against field-measured ballast acceleration data. Using this model, the dynamic responses and mechanical states of rock ballast were analyzed, and the optimal size of the tamping tine was determined. The results showed that the new tamping method could significantly mitigate damage to rock ballast and improve maintenance effects. The maximum improvement in the uniformity index of the rock ballast using the new tamping method reached 182.96% compared with that using the old tamping machine. The optimal width and height of the tine structure for the new tamping method were 60–70 and 75–80 mm, respectively.

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一种新的夯实方法：减轻岩石压载物的损伤并增强其维护能力

夯实是岩石压舱物维修中最常用的技术。为了最大限度地减少夯实引起的岩石压载物退化，提高维护效果，提出了一种基于智能夯实时间的新型夯实方法。首先，设计了新型夯实机，在夯实过程中实现了时间结构伸缩状态的自动切换。随后，建立了夯实压舱轨道模型，并根据现场测量的压舱加速度数据进行了验证。利用该模型分析了岩石压载物的动力响应和力学状态，确定了最优夯实时间。结果表明，这种夯实方法能明显减轻压石的破坏，提高维修效果。与使用旧夯实机相比，采用新夯实方法的岩石压载物均匀性指标的最大改善达到182.96%。新夯实方法的最佳时间结构宽度为60 ~ 70 mm，高度为75 ~ 80 mm。

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来源期刊

International Journal of Damage Mechanics 工程技术-材料科学：综合

CiteScore

8.70

自引率

26.20%

发文量

审稿时长

5.4 months

期刊介绍： Featuring original, peer-reviewed papers by leading specialists from around the world, the International Journal of Damage Mechanics covers new developments in the science and engineering of fracture and damage mechanics. Devoted to the prompt publication of original papers reporting the results of experimental or theoretical work on any aspect of research in the mechanics of fracture and damage assessment, the journal provides an effective mechanism to disseminate information not only within the research community but also between the reseach laboratory and industrial design department. The journal also promotes and contributes to development of the concept of damage mechanics. This journal is a member of the Committee on Publication Ethics (COPE).