Abstract
Soil arching plays an important role in the design of piled-embankments of transportation facilities. This paper aims to study the three dimensional effect of soil arching in piled-embankments by discrete element simulation. The results show the formation of soil arching and the stress transfer mechanism. The evolution of the stress ratio of pile cap and subsoil was obtained, and the overestimation of the arching effect in plane strain condition was revealed. According to the movements of soil particles, the 3D uneven settlement pattern characteristic was plotted and clearly shows the formation of soil arching. The direction of major principal stress in three typical sections clearly shows the 3D effect of stress transfer mechanism. The obtained results are useful for the deformation calculation of high-speed railway piled embankment.
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The financial supports by National Basic Research Program of China (through grant No. 2014CB049100) and National Science Foundation of China (NSFC through grant No. U1433123) are gratefully acknowledged.
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Ma, Y., Lü, X., Huang, M. (2019). DEM Study of the Three Dimensional Effect of Soil Arching in Piled-Embankments. In: Fatahi, B., Mwanza, A., Chang, D. (eds) Sustainable Design and Construction for Geomaterials and Geostructures. GeoChina 2018. Sustainable Civil Infrastructures. Springer, Cham. https://doi.org/10.1007/978-3-319-95753-1_4
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