Abstract
In this paper, railway-induced ground vibrations are analysed experimentally with the aim of addressing questions raising from the planning of a new RER network, available in the near future in order to alleviate pollution and the traffic jams. Free field ground vibrations are measured during the passing of InterCity and InterRegion trains. Various sites along the main line L161 Brussels-Luxembourg are chosen and investigated, with specific differences about the track and soil configurations. In order to compare these results with numerical ones, a deep dynamic characterisation of the track, the soil and the train is first performed. The analysis of horizontal and vertical ground vibrations measured during the passage of domestic trains (AM96, AM86, AM80, AM75, HLE27/M4 or M5) at various speeds (from 40 to 120 km.h-1 ) is then presented. The results show that the ground vibration amplitude depends on various factors: soil configuration, train type and speed, direction of measurement, track quality. In a particular case, a local defect (rail joint) induces large deformations of the soil.
Highlights
Problems related to vibrations in buildings are a nonnegligible environmental issue in the network design, especially for nearby structures in dense cities
As for other disciplines of engineering, ground vibrations induced by railway traffic are more and more studied by simulation
A particular attention is paid to the impact of the train and the soil configuration, as well as the direction of measurement
Summary
Problems related to vibrations in buildings are a nonnegligible environmental issue in the network design, especially for nearby structures in dense cities. As validation can only be performed by measurements, there is still a need in experimental results. Such results, available in the literature, are often dedicated to a particular field, for example the high-speed case [2,3,4,5]. Available in the literature, are often dedicated to a particular field, for example the high-speed case [2,3,4,5] The particularity of these data is that they correspond to a very good track quality, mainly focusing on the (quasi-)static deflection. A particular attention is paid to the impact of the train and the soil configuration, as well as the direction of measurement
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