During the last decade Railways have become one of the most advanced and fast developing branches of transportation technology. The reason is very high speeds achievable by the most advanced modern trains (French TGV, German ICE, Italian Pendolino, Swedish X2000, Spanish AVE, Belgium Thalys, the Eurostar) and very low air pollution per passenger compared with road vehicles. Unfortunately, the i...

A numerical model to predict train induced vibrations is presented. The dynamic computation considers mutual interactions in vehicle/track coupled systems by means of a finite and discrete elements method. The rail defects and the case of out-of-round wheels are considered. The dynamic interaction between the wheel-sets and the rail is accomplished by using the non-linear Hertzian model with hy...

In this paper, results from full-scale tests on a corrugated soil-steel flexible culvert for railway traffic are presented. The bridge was instrumented with strain gauges, accelerometers and displacement gauges, measuring the response from passing trains. The aim of the measurement campaign was to gain knowledge of the dynamic behaviour due to train induced vibrations, both of the bridge struct...

Passing underground trains induce vibrations transmitted to the ground surface and the nearby structures. Ordinarily, these vibrations do not result in structural damage but can harm nonstructural elements and disturb the occupants. These effects are more pronounced when evaluating buildings like hospitals, laboratories, museums, etc., and their assessment is an important design need. To respon...

We propose a novel method for the detection of vibrations caused by trains in an optical fiber buried nearby the railway track. Using optical time-domain reflectometry vibrations in the ground caused by different sources can be detected with high accuracy in time and space. While several algorithms have been proposed in the literature for train tracking using OTDR signals they have not been tes...

The reduction of train-induced ground vibrations by different railway lines and mitigation measures in the propagation path is analysed a unified approach two-dimensional finite element calculations where expressed as amplitude ratio between specific reference situation (the surface track without measure). In general, there no at low frequencies, becomes stronger with increasing frequency. A ma...

The dynamic response of railway bridges is important to consider, as the high velocity loading from trains increases risk resonance. Increasing train speeds and loads result in a need for adaptable properties bridges. One solution install magnetorheological dampers, structure originating moving could be controlled by alternating input current damper. However, complexity such devices results dif...

Abstract In this paper, the authors investigate energy harvesting on railway bridges. A tuning process based a statistical analysis of mechanical generated by lumped‐mass model is presented and validated. cantilever‐based harvester configuration applied, optimal design 3D printed harvesters studied. The electromechanical behaviour device represented an analytical for estimation harvested from t...