In the 1970's it was reported that there were approximately 2300 track miles of timber railroad bridges in the United States and Canada. For short spans, they offer an attractive alternative to other types of bridges as they are economical, faster to construct and easy to maintain. Current design practices do not allow an independent consideration of the effects of the dynamic loads in sizing o...

Abstract. Monitoring the condition of railway infrastructure is essential for maintaining safety standards and preventing accidents. The regular inspections required this task are still typically carried out in many countries with costly time-consuming on-site human inspections. LiDAR point clouds collected by mobile laser scanning (MLS) already proved to be suitable recognizing important railr...

This paper reports the analysis of methods for estimating technical condition subgrade underneath a constructed railroad track or road during its operation. The study results have proven that issue related to monitoring and controlling high-quality compaction heterogeneous remains relevant requires construction reliable experimental assessing degree compaction. A procedure determining in labora...

Asymptotic behavior of initially "large and smooth" pulses is investigated at two typical stages of their evolution governed by the defocusing nonlinear Schrödinger equation. At first, wave breaking phenomenon is studied in the limit of small dispersion. A solution of the Whitham modulational equations is found for the case of dissipationless shock wave arising after the wave breaking point. Th...

Railroad terminal performance directly affects network capacity and an important element of terminal efficiency is railcar inspection and repair. New technologies to automate railcar inspections can improve railroad terminal efficiency by reducing inspection times and improving operations. This research applies Lean Manufacturing methods to the railcar maintenance process and investigates poten...