Abstract In this paper, a dynamic interaction model of the coupled system railway bridge, foundation, subsoil, ballast, track, and high-speed train is presented, with special emphasis on longitudinal between track bridge structure, taking into account flexibility ballast. After description system, equations motion are given separately for each subsystem. The discretization bedded rails performe...

As well known, the transportation industry and its related infrastructure including railway roads, require very high construction costs. In addition, excessive use of natural resources energy for maintenance has highlighted need adapting purposeful planning with regards to sustainability impacts. infrastructure, focus should be minimize consumption, Greenhouse Gas emissions other environmental ...

http://www.tandfonline.com/doi/pdf/10.1080/15732479.2012.670250 Abstract Railway bridges currently encounter the challenges of increasing the load capacity while the environmental sustainability should be achieved. However, it has been realized that the environmental assessment of railway bridges has not been integrated into the decision making process, the standard guideline and criterion is s...

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...

Transition zones on railway lines are localities with gradual changes in the construction layers connections between a fixed track and ballasted or wide various objects, e.g., tunnels, bridges, culverts, etc. The different type of transition causes shock wave when train passes, which can cause undesired effects stability its construction, durability, passengers’ comfort. For this reason, opera-...

Railways have a significant role to play in sustainable transportation. Rail travel is currently the only mode of rapid, large-scale, long-distance transport for both freight and passengers that offers zero carbon dioxide emissions at point use. However, our railway infrastructure needs be more robust resilient combined effects climate change, traffic growth increases vehicle loads speed. buckl...