Programvaror för arbetet med höghastighetsjärnväg - Statiska och dynamiska analyser för bank och undergrund
Sammanfattning: At present there is an ongoing investigation of a Swedish high-speed rail. It is decided that the railway will be constructed with a slab track and mainly be founded on an embankment. There is an uncertainty in how to conduct stability and settlement calculations for the embankment and subgrade and how dynamic effects should be considered. The present Master’s thesis aims to analyze appropriate software for static aswell as dynamic calculations. Slab tracks provide a higher stability of the track but a key issue is that practically all settlements must be avoided. The dynamic effects are related to the train speed and resonance may occur if the train speed approaches the so called critical speed of the railway system. Ten persons have been interviewed in this thesis. To estimate the settlements in the embankment and subgrade the interviewees seem to agree that a finite element software intended for geotechnical analysis is the best alternative. Concerning the dynamic effects most of the interviewees reckon that a dynamic analysis mainly aims to consider the risk for resonance. Dynamic analysis and settlement analysis are considered to be two separate kinds of simulations. There is an uncertainty about to what extent it will be necessary to consider the dynamic effects. For dynamic calculation general-purposed finite element programs are considered to be the best alternative.
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