网格状带齿加筋砂垫层界面特性的细观机理分析

doi:10.12066/j.issn.1007-2861.1797

Abstract

Abstract:

To investigate the micro-mechanism of interaction between denti-inclusions and sand cushion, elliptical group particles were developed. Numerical simulation of pull-out tests was performed by PFC2D. The model was validated by comparing the numerical results and the pull-out test results. Evolution of the shear band and load transfer mechanisms was studied. The results show that the stress concentration occurs near denti-inclusions, and the upper and lower interfaces are not symmetrical. The shear bond's thickness of sand cushion reinforced with denti-inclusions is significantly larger than clay reinforcement in case of the same pullout displacement. Every denti-inclusion has a different rate of contribution to pull-out force and change when drawing.

Key words: grid with denti-inclusion, soil-geosynthetic behavior, particle flow code, micro-mechanism

CLC Number:

TU411

ZHANG Jun, LIN Yongliang. Micro-mechanism analysis of interface behavior of reinforced sand cushion with denti-inclusions[J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(1): 118-125.

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References 12

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Micro-mechanism analysis of interface behavior of reinforced sand cushion with denti-inclusions

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