Results 81 to 90 of about 19,165 (224)

Mortality on the tracks: spatiotemporal patterns to rail‐kill in the Balule Nature Reserve, South Africa

Wildlife Biology, Volume 2025, Issue 1, January 2025.
The global dependency on railways as an economical and environmentally‐friendly option for transportation is steadily increasing. Despite their numerous benefits, railways and train traffic can have negative impacts on wildlife, particularly through the risk of mortality due to collisions with trains, entrapment in rails, or electrocution at overhead ...
Manisha Bhardwaj, Wendy J. Collinson‐Jonker, Siboniso K. Thela, Lourens H. Swanepoel, Paul Allin   +4 more
wiley   +1 more source

Dynanics of a vehicle-track coupling system at a rail joint [PDF]

, 2015
The dynamic behaviour at a rail joint is examined using a two-dimensional vehicle–track coupling model. The track system is described as a finite-length beam resting on a double-layer discrete viscous-elastic foundation.
Cencen Gong, Ilaria Grossoni, Jenkins HH, Simon Iwnicki, Wang Y, Yann Bezin   +5 more
core   +1 more source

Physics‐Guided Deep Learning Model for Daily Groundwater Table Maps Estimation Using Passive Surface‐Wave Dispersion

Water Resources Research, Volume 61, Issue 1, January 2025.
Abstract Monitoring groundwater tables (GWTs) remains challenging due to limited spatial and temporal observations. This study introduces an innovative approach combining an artificial neural network, specifically a multilayer perceptron (MLP), with continuous passive Multichannel Analysis of Surface Waves (passive‐MASW) to construct GWT depth maps ...
José Cunha Teixeira, Ludovic Bodet, Agnès Rivière, Amélie Hallier, Alexandrine Gesret, Marine Dangeard, Amine Dhemaied, Joséphine Boisson Gaboriau   +7 more
wiley   +1 more source

Laboratory experimental of ballast–bituminous–latex–roving (Ballbilar) layer for conventional rail track structure

Journal of the Mechanical Behavior of Materials
Ballast structures continue to be utilized in Indonesia’s railway system. They are essential for conventional railway lines, which experience high levels of stress and are susceptible to damage from train traffic. This study examined the utilization of a
Setiawan Dian M., Arifan Rusdi Sahla, Ghani Syafiq Abdul, Galihajiningtresna Wilsamilia Nurizki, Rahmawati Anita, Saleh Alfian, Syah Aminudin   +6 more
doaj   +1 more source

Improvement and In-Situ Application of an Evaluation Method of Ballasted-Track Condition Using Digital 2-D Image Analysis

Applied Sciences, 2020
The advancement in digital image analysis methods has led to the development of various techniques, i.e., quantification of ballast gravel abrasion. In this study, the recognition rate of gravel aggregates has been significantly increased by improving ...
Bongsik Park, Yeong-Tae Choi, Hyunmin Kim   +2 more
doaj   +1 more source

Dynamic Features of Low Embankment Subgrade on Expressways Under Traffic‐Induced Loads: Experimental and Numerical Study

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
The dynamic features of the subgrade are closely related to vehicle operation safety. Most of the previous studies are limited to the dynamic response of high embankments, therefore, in this study, the dynamic characteristics of low embankment subgrade under dynamic traffic loads are investigated through field tests and numerical simulations ...
Yonghui Shang, Linrong Xu, Donglei Jin, Meixia Wang, Qiancheng Fang, Huseyin Bilgin   +5 more
wiley   +1 more source

Job order assignment at optimal costs in railway maintenance [PDF]

, 2013
Tamping is an important part of railway maintenance. Well tamped ballast reduces track irregularities and increases travel safety and comfort. But if the ballast is in a bad condition, the train speed must be restricted, which leads to delays and penalty
Baldi, Mauro Maria, Heinicke, F., Simroth, A., Tadei, Roberto   +3 more
core  

Model tests on ordinary and geosynthetic encased stone columns with recycled aggregates as filler material

International Journal of Geo-Engineering
Purpose Sincethe availability of natural aggregates is very sparse, recycled industrial and construction waste provides a sustainable alternative to ground improvement using vibro replacement method.
Shivangi Saxena, Lal Bahadur Roy, Praveen Kumar Gupta, Virendra Kumar, Prabhu Paramasivam   +4 more
doaj   +1 more source

Study of ballast layer stiffness in railway tracks

Građevinar, 2016
In this paper, ballast layer stiffness in railway tracks is investigated. Test results show that the percentage of ballast contamination changes considerably across the ballast layer depth.
Jabbar Ali Zakeri, Seyed Ali Mosayebi
doaj   +1 more source

Optimum design of composite prestressed concrete girder railway bridges [PDF]

, 2012
This paper deals with the formulation of design optimisation of pretsressed concrete bridges. The bridge is of a slab-on-girder type, hence modeled as an equivalent orthotropic plate.
Al-Nuaimi, A, Mohammad, F, Mohammed, S
core