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Numerical Simulation Study on Wetting Deformation of Coarse Aggregate Materials
Author(s): 
Pages: 535-538,551
Year: Issue:  5
Journal: Journal of Seismology

Keyword:  粗粒料 颗粒流 湿化变形 抗剪强度;
Abstract: 粗粒料湿化变形特性对土石坝静力稳定有着显著影响。目前开展的三轴试验和直剪试验研究,一般只能进行干样和饱和样的试验,而对于非饱和情况研究较少。基于粗粒料不同围压下湿化变形试验研究成果开展数值模拟研究,结果表明:湿化变形的影响可以通过改变细观剪切模量和细观摩擦系数来实现;随着颗粒破碎随饱和度和围压的增加,湿化后粗粒料的强度低、内聚力降低,但摩擦角变化不大。
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