It is known that short-span high-speed railway viaducts are prone to suffer significant dynamic effects due the passage of moving train loads. Recent technological advances in engineering have resulted track typologies different from conventional ballasted consisting discrete sleepers fastened rails and resting on a ballast bed. In particular, ballastless has been identified as an effective sol...

The present contribution deals with the numerical modeling of railway track-supporting systems-using coupled finite-infinite elements-to represent the near and distant field stress distribution, and also employing a thin layer interface element to account for the interfacial behavior between sleepers and ballast. To simulate the relative debonding, slipping and crushing at the contact area betw...

The ballastless plate girder bridge, classified as a structure type that requires an emergent replacement among domestic railway bridges, generally tends to upgrade ballasted track along with continuous welded rail (CWR). axial forces of the CWR due temperature change need be distributed bridge foundations. Because most existing bridges over 50 years age do not provide any design information, s...

Railway track irregularity surveying is important for the construction and the maintenance of railway lines. With the development of inertial devices, systems based on Inertial Navigation System (INS) have become feasible and popular approaches in track surveying applications. In order to overcome the requirement of high precision control points, this paper proposes a railway track irregularity...

The vibrations produced by trains include two parts which are deterministic and random vibrations. Due to variation of dynamic loads and patterns of load-time, the random vibration of moving train is one of the most important issues in the field of railway engineering. One of the important sources in producing the train vibrations is rail roughness and irregularities. In this paper, responses o...

High-accuracy railway track surveying is essential for railway construction and maintenance. The traditional approaches based on total station equipment are not efficient enough since high precision surveying frequently needs static measurements. This paper proposes a new filtering and smoothing algorithm based on the IMU/odometer and landmarks integration for the railway track surveying. In or...

Significant savings in carbon emissions, cost, and time could be achieved via the reduction maintenance frequency, capital costs of track construction, land used. Geosynthetic-reinforced soils offer such sustainable solutions. The experimental work presented this paper investigates long-term performance a Geosynthetic-Reinforced Soil Retaining Wall (GRS-RW) system as an alternative to conventio...

The demand for freight rail transportation in North America is anticipated to substantially increase in the foreseeable future. Additionally, government agencies seek to increase the speed and frequency of passenger trains operating on certain freight lines, further adding to demand for new railway capacity. The majority of the North American mainline railway network is single track with passin...