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控制吸力的非饱和土抗剪切度试验

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摘要 以河南南阳地区膨胀土为研究对象,使用可以控制吸力的非饱和土直剪仪进行不同吸力下的非饱和弱膨胀土的直接剪切试验。得出了不同吸力下(吸力范围为50-400kPa),膨胀土粘聚力和内摩擦角的变化趋势。试验结果表明,随着吸力的增大,膨胀土的粘聚力和内摩擦角均增大。其中,在吸力<100 kPa时,粘聚力和内摩擦角的增长趋势随着随吸力的增大而加快,且该趋势接近线性变化。当吸力>100 kPa时,粘聚力和内摩擦角的增长趋势随着随吸力的增大而有所减缓。
出处 《河南水利与南水北调》 2017年第4期74-74,76,共2页 Henan Water Resources & South-to-North Water Diversion
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