Results 91 to 100 of about 18,753 (176)

Modeling and Characterization of Complex Dynamical Properties of Railway Ballast

open access: yesApplied Sciences
The nonlinear mechanical properties of ballasted tracks along railways result in complex dynamics of the vehicle–track systems. Employing localized characterization of ballast and a simplified model might underestimate the vehicle–track system’s ...
Xia Hua   +6 more
doaj   +1 more source

Geotechnical Properties of Ballast and the Role of Geosynthetics [PDF]

open access: yes, 2006
The ballast and its engineering behaviour have a key role in governing the stability and performance of railway tracks. The deformation and degradation behaviour of ballast under static and dynamic loads was studied based on large-scale triaxial testing.
Christie, D   +3 more
core  

Practical considerations regarding results from static and dynamic load testing of bridges [PDF]

open access: yes, 2019
Bridge tests are a helpful tool for bridge assessment and evaluation. Both in the case of a static and dynamic load testing, each element of the test: the load selection and application, the creation of a numerical model to follow the progress of the ...
Casas Rius, Joan Ramon, Olaszek, Piotr
core   +3 more sources

Punching test for mechanical characterization of asphalt railway sub-ballast

open access: yesRailway Engineering Science
The use of asphalt mixtures for sub-ballast layers in railway infrastructure, which is becoming a preferred design solution in in the high-speed and high-capacity lines in some European countries and in the United States, offers several structural ...
Aldo La Placa   +2 more
doaj   +1 more source

Research related to vibrations from high speed railway traffic

open access: yes, 2008
We discuss here recent results from several research programmes related to dynamic aspects and vibrations induced by high speed railway traffic, developed at the computational mechanics group, within the “Escuela de Ingenieros de Caminos” of the ...
Gabaldón Castillo, Felipe   +1 more
core  

Rigid body dynamics of railway ballast

open access: yes, 2002
20 pages, 3 ...
Schwager, Thomas, Poeschel, Thorsten
openaire   +2 more sources

REINFORCEMENT EFFECT OF GEOGRID IN THE BALLAST AND SUB- BALLAST OF THE RAILWAY TRACK

open access: yesInternational Journal of GEOMATE, 2018
The railway transportation in Iraq is essentially irreplaceable for its significant role in economicgrowth through revenue derived from the movement of goods and raw materials and passengers between Iraqmain cities. The objective of this paper is to study the effect of geogrid reinforcement on railway tracklayersthrough the use of Abaqus program.
openaire   +1 more source

The influence of support conditions on short- and long-term track behaviour [PDF]

open access: yes
Railway track support conditions are known to deeply affect the dynamic performance of vehicle-track interaction, influencing the state of the track system both in the short and in the long term.
Bezin, Yann, Grossoni, Ilaria
core  

Correlation Analysis of Railway Track Alignment and Ballast Stiffness: Comparing Frequency-Based and Machine Learning Algorithms

open access: yesAlgorithms
One of the primary challenges in the railway industry revolves around achieving a comprehensive and insightful understanding of track conditions. The geometric parameters and stiffness of railway tracks play a crucial role in condition monitoring as well
Saeed Mohammadzadeh   +3 more
doaj   +1 more source

Modal identification of single-span railway viaducts [PDF]

open access: yes, 2005
The paper reports on the results of the modal identification of several small to medium span railway viaducts. The identification was based mainly on the free vibration of each structure immediately after the train passages.
Rebelo, Carlos   +2 more
core  

Home - About - Disclaimer - Privacy