Experimental Study of Railway Trackbed Pressure Distribution Under Dynamic Loading

IF 0.6 4区 工程技术 Q4 ENGINEERING, CIVIL Baltic Journal of Road and Bridge Engineering Pub Date : 2019-12-27 DOI:10.7250/bjrbe.2019-14.455
M. Sysyn, V. Kovalchuk, O. Nabochenko, Y. Kovalchuk, O. Voznyak
{"title":"Experimental Study of Railway Trackbed Pressure Distribution Under Dynamic Loading","authors":"M. Sysyn, V. Kovalchuk, O. Nabochenko, Y. Kovalchuk, O. Voznyak","doi":"10.7250/bjrbe.2019-14.455","DOIUrl":null,"url":null,"abstract":"Reliable and durable operation of the railway track under the dynamic load of the rolling stock depends considerably on the ability of the ballast layer to get the load from the sleepers and distribute it to the subgrade. In this paper, the experimental study of the distribution properties of the ballast layer under the impact of dynamic loading depending on the density of the ballast layer is carried out. The ballast behaviour during load cycles is estimated by pressure measurements at the ballast prism base along the axis of a sleeper with simultaneous video observation of the ballast particles movement through transparent sidewalls of the box with crushed stone. Measurements of pressure distribution are carried out with the developed microcontroller system of measurements and developed load cells. The system allows performing multi-point measurements of stress in combination with measurements of acceleration and photogrammetry. The results of measurements showed a significant effect of the ballast layer consolidation on the distribution of stresses under the sleeper. The performed research opens up opportunities for practical improvement of the existing types of track structures and the technology of the ballast layer tamping in terms to provide the optimal conditions for the ballast layer operation.","PeriodicalId":55402,"journal":{"name":"Baltic Journal of Road and Bridge Engineering","volume":"14 1","pages":"504-520"},"PeriodicalIF":0.6000,"publicationDate":"2019-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Baltic Journal of Road and Bridge Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.7250/bjrbe.2019-14.455","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 12

Abstract

Reliable and durable operation of the railway track under the dynamic load of the rolling stock depends considerably on the ability of the ballast layer to get the load from the sleepers and distribute it to the subgrade. In this paper, the experimental study of the distribution properties of the ballast layer under the impact of dynamic loading depending on the density of the ballast layer is carried out. The ballast behaviour during load cycles is estimated by pressure measurements at the ballast prism base along the axis of a sleeper with simultaneous video observation of the ballast particles movement through transparent sidewalls of the box with crushed stone. Measurements of pressure distribution are carried out with the developed microcontroller system of measurements and developed load cells. The system allows performing multi-point measurements of stress in combination with measurements of acceleration and photogrammetry. The results of measurements showed a significant effect of the ballast layer consolidation on the distribution of stresses under the sleeper. The performed research opens up opportunities for practical improvement of the existing types of track structures and the technology of the ballast layer tamping in terms to provide the optimal conditions for the ballast layer operation.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
动载作用下铁路道床压力分布的试验研究
铁路轨道在机车车辆动态载荷下的可靠和持久运行在很大程度上取决于道碴层从枕木获得载荷并将其分配到路基的能力。本文对动态载荷作用下压载层的分布特性进行了试验研究。负载循环期间的压载行为是通过沿轨枕轴线在压载棱镜底座处进行的压力测量来估计的,同时通过视频观察压载颗粒穿过装有碎石的箱子的透明侧壁的运动。压力分布的测量是用开发的微控制器测量系统和开发的测压元件进行的。该系统允许结合加速度和摄影测量进行应力的多点测量。测量结果表明,道碴层固结对轨枕下应力分布有显著影响。所进行的研究为实际改进现有类型的轨道结构和道碴层夯实技术提供了机会,为道碴层运营提供了最佳条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Baltic Journal of Road and Bridge Engineering
Baltic Journal of Road and Bridge Engineering 工程技术-工程:土木
CiteScore
2.10
自引率
9.10%
发文量
25
审稿时长
>12 weeks
期刊介绍: THE JOURNAL IS DESIGNED FOR PUBLISHING PAPERS CONCERNING THE FOLLOWING AREAS OF RESEARCH: road and bridge research and design, road construction materials and technologies, bridge construction materials and technologies, road and bridge repair, road and bridge maintenance, traffic safety, road and bridge information technologies, environmental issues, road climatology, low-volume roads, normative documentation, quality management and assurance, road infrastructure and its assessment, asset management, road and bridge construction financing, specialist pre-service and in-service training;
期刊最新文献
Traffic Load Model Calibration and Comparison to Evolving Traffic Loads In 2014–2018 Research of Porous Asphalt Concrete Application on Highway Sections with The Increased Aquaplaning Danger Level An Assessment of The Effect of The Average Speed Enforcement Systems on Lithuanian Roads Screen-Out Stones Activated with Mineral Binders and Used as Material for Earth Construction Influence of Nonlinear Analysis Technology on Damage Analysis of Asphalt Pavement Structure
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1