Railway Track Stiffness - Dynamic Measurements and Evaluation for Efficient Maintenance
نویسنده
چکیده
v Outline of Thesis vii Author contribution of papers ix Contribution of Thesis xi
منابع مشابه
Influences of Track Structure, Geometry and Traffic Parameters on Railway Deterioration
The roles of the several parameters that influences railway track deterioration most, are examined in this research with a view to make railway track maintenance more effective and cost efficient. The results presented are based on a comprehensive study of railway track degradation on super structure, sub-structure and geometrical aspects. The changes in TQI (Track Quality Index), the track set...
متن کاملStudy on different solutions to reduce the dynamic impacts in transition zones for high-speed rail
One of the most important factors influencing the track maintenance is the transitions between parts of the track with different vertical stiffness. The dynamic...
متن کاملSensitivity Analysis of Fastenings’ Types on Track's Life-Cycle
During the study for the dimensioning as well as the selection of the individual materials constituting a railway track, the ballast and the substructure present residual deformations, directly related to the deterioration of the geometry of the track. The slighter the residual deformations and the slower their alteration over time is, the better the quality of the track. The actions acting ...
متن کاملNumerical Investigation of Rail Bending Behaviour Focusing on the Effect of Track Modulus
Thorough understanding of steel rail response to wheel load is a key step towards design and evaluation of the railway track structure. In current practice, maximum vertical deflection and bending moment are calculated using the theory of infinite beam on continuous elastic foundation (Winkler model), in which the foundation stiffness is assumed as constant. However, variation of track modulus ...
متن کاملDynamic Response of the Coupled Vehicle-Floating Slab Track System using Finite Element Method
In present study, a mathematical model of the vehicle–floating slab track (FST) interaction is established to investigate the coupled behaviour of vehicle–track system. The FST is modelled as the double Euler -Bernoulli beam including the rail and slab. The railway vehicle is simplified as a multi-rigid-body model. The wheel–rail interface is treated using a nonlinear Hertzian contact model, co...
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تاریخ انتشار 2009