- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
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| Citation: | WANG Yonghong, SANG Songkui, LIU Xueying, ZHANG Mingyi, BAI Xiaoyu. Numerical Simulation of Particle Flow Characteristics of Jacked Pile Penetration in Laminated Clay Soil[J]. Journal of Southwest Jiaotong University, 2021, 56(6): 1250-1259. doi: 10.3969/j.issn.0258-2724.20200072
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To investigate the penetration mechanism of jacked piles in laminated clay and utilize the advantages of discrete element PFC2D software in dealing with large deformation and nonlinearity, given that the contact bonding model excels in soil simulation, a discrete element model for jacked pile penetration in laminated clay is established. The penetration process of jacked piles is realized in discrete element software. It is explored about how the pile force, pile end resistance, friction resistance and radial pressure at pile sides change with penetration depth in jacked pile penetration. The distribution characteristics of soil contact force chain are analyzed in the microscopic level for jacked pile penetration of different pile diameters. The variation law of soil displacement in jacking process is clarified. The test results show that, with the increase in pile diameter, the influence of soil layer on pile pressure decreases gradually. The friction resistance and radial earth pressure at pile sides are similar, and there is obvious degeneration at the given depth. Soil layers vary in the forms of contact force chains. When the pile end is located in the silty clay, the influence range of the pile end is about 7
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