Numerical analyses of the failure of Perniö embankment - Numerical modelling using Creep-SCLAY1S in Plaxis

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Examensarbete för masterexamen
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2020
Författare
Roos, Christoffer
Molander, Fanny
Modellbyggare
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Sammanfattning
With the increasing population and people travelling with a higher demand for sustainable travelling transport alternatives, the railway network is needed to be developed. In this thesis an earlier performed failure test embankment in Perniö, Finland is analysed and simulated numerically in Plaxis, using the creep-SCLAY1S model. It is discussed however the old railway embankments can handle higher axial load than they were initially buildt for or if reinforcements are needed. The result and discussion in this thesis compare the measured results from the performed failure test with the modelled results performed in this thesis. The compared results were similar except from the displacements and the results show that the old railway has the capacity to carry higher loads than initially predicted.In conclusion, it is discussed however numerical methods are suitable for analysing failure or not. Thus Numerical models are precise and take many parameters and aspects into account when calculating failure the Plaxis tool are calculating until the soil fails and are not able to simulate a load coming from a train.
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Ämne/nyckelord
Creep-SCLAY1S, Numerical model, Embankment, Failure test, Soft soil, Perniö, Plaxis
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