Experimental and numerical studies on vibration characteristics of a railway embankment

In order to study the dynamic response of the rail embankment under different speeds and moving load of following vehicles, a model experiment with a ratio of 1:10 is established to test the time history of acceleration and the earth pressure of the embankment at various train speeds. Using the ABAQ...

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Veröffentlicht in:Journal of Central South University 2022-05, Vol.29 (5), p.1641-1652
Hauptverfasser: Yang, Chang-wei, Yuan, Cheng, Qu, Li-ming, Ding, Xuan-ming, Liu, Wei-bin
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Sprache:eng
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Zusammenfassung:In order to study the dynamic response of the rail embankment under different speeds and moving load of following vehicles, a model experiment with a ratio of 1:10 is established to test the time history of acceleration and the earth pressure of the embankment at various train speeds. Using the ABAQUS finite element calculation software, a train load is applied through the FORTRAN subroutine, thereby establishing a three-dimensional finite element model with the same size as the model experiment. The data and conclusions of the finite element method model are verified by the model experiment. The model also makes some supplements to the model experiment. The experimental results show that with the increase of speed, the peak acceleration and earth pressure of the embankment also increase. By analyzing the experimental data, it can also be found that the vertical acceleration of the embankment is much greater than the axial acceleration and the lateral acceleration. In addition, the elastic modulus of the soil and the sleeper pitch also have some influence on the acceleration.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-022-5030-9