Analysis of Dynamic Response of Embankment Reinforced with Geogrid with Strengthening Nodes Based on PFC2D

Abstract

Abstract:

Abstract： The embankments were simulated by the software of particle flow code based on the discrete element theory. Different dynamic responses were investigated in the cases of unreinforced embankment, embankment reinforced with traditional geogrid and embankment reinforced with geogrid with strengthening nodes. The displacement fields and the distribution of contact forces of soil particles in three cases were analyzed. Compared to the embankment reinforced with traditional geogrid, due to the existence of the strengthening nodes, the geogrid with strengthening nodes can effectively reduce the accumulated settlement of the embankment and restrict the lateral displacement of the slope. In the case of reinforced embankment, multiple vertical forcebearing columns develop below the loading platen, resulting in uniformly distributed forces within the embankment.

Key words: reinforced embankment, geogrid, strengthening nodes, dynamic response, particle flow code(PFC2D)

QIU Chengchun1,ZHANG Mengxi2,WANG Yiming3. Analysis of Dynamic Response of Embankment Reinforced with Geogrid with Strengthening Nodes Based on PFC2D[J]. Journal of Shanghai Jiaotong University, 2015, 49(07): 957-960.

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