Monitoring the dynamic response of track formation with retaining wall to heavy-haul train passage

IF 3.4 2区工程技术 Q2 TRANSPORTATION SCIENCE & TECHNOLOGY

International Journal of Rail Transportation Pub Date : 2022-07-20 DOI:10.1080/23248378.2022.2103849

Guishuai Feng, Liang Zhang, Q. Luo, Teng-fei Wang, Hongwei Xie

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引用次数: 4

Abstract

ABSTRACT A monitoring project was implemented in trial sections of the Watang−Rizhao heavy-haul railway. Data were acquired at instrumented track formations and railway retaining wall during 30 passages of train at operating speeds ranging from 5 km/h to 100 km/h. At the formation level, earth pressure cells were mounted beneath 10 longitudinally adjacent sleepers, one of which was installed along with two integrated vibration sensors for vertical acceleration and deflection measurements. The retaining wall was instrumented at different elevations in examining its vibration characteristics and variation in earth pressure against the wall due to train passage. Statistical analysis was performed on peak values of observed data to assess train speed impact on the dynamic response of the earth substructures. This field study provides researchers and practitioners with comprehensive data pertaining to the dynamic performance evaluation of track foundations supported by retaining structures under a maximum axle load of 30 tons.

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有挡土墙的轨道结构对重载列车通道的动力响应监测

摘要:在望日重载铁路试验段实施监测工程。在列车运行速度为5公里/小时至100公里/小时的30个通道中，在仪表轨道编队和铁路挡土墙处获取数据。在地层层面，土压力传感器安装在10个纵向相邻的枕木下，其中一个枕木与两个集成振动传感器一起安装，用于垂直加速度和挠度测量。在不同标高下对挡土墙进行了测量，研究了列车通过时挡土墙的振动特性和对墙土压力的变化。对观测数据的峰值进行统计分析，评估列车速度对土方基础结构动力响应的影响。本研究为研究人员和从业人员提供了30吨最大轴荷下挡土结构支撑轨道基础动力性能评价的综合数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Rail Transportation TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

6.90

自引率

15.00%

发文量

期刊介绍： The unprecedented modernization and expansion of rail transportation system will require substantial new efforts in scientific research for field-deployable technologies. The International Journal of Rail Transportation (IJRT) aims to provide an open forum for scientists, researchers, and engineers in the world to promote the exchange of the latest scientific and technological innovations in rail transportation; and to advance the state-of-the-art engineering and practices for various types of rail based transportation systems. IJRT covers all main areas of rail vehicle, infrastructure, traction power, operation, communication, and environment. The journal publishes original, significant articles on topics in dynamics and mechanics of rail vehicle, track, and bridge system; planning and design, construction, operation, inspection, and maintenance of rail infrastructure; train operation, control, scheduling and management; rail electrification; signalling and communication; and environmental impacts such as vibration and noise. The editorial policy of the new journal will abide by the highest level of standards in research rigor, ethics, and academic freedom. All published articles in IJRT have undergone rigorous peer review, based on initial editor screening and anonymous refereeing by independent experts. There are no page charges and colour figures are included in the online edition free of charge.