北京平原区软弱黏性土次固结系数的试验研究OA北大核心CSCDCSTPCD
EXPERIMENTAL INVESTIGATION ABOUT SOFT COHESIVE SOIL COEFFICIENT OF SECONDARY CONSOLIDATION IN BEIJING PLAIN
次固结系数通常被认为是一个常数,然而,大量的实验数据表明,随着时间的改变次固结系数也发生着变化.同样,大量的试验表明次固结系数与固结压力、压缩指数、含水率以及塑性指数有着一定的相关性.本文在着重研究北京平原区软弱黏性土次固结特性的基础上,对其规律进行了总结和分析.结果表明:对超固结土,次固结系数随荷载的增大而增大；对正常固结土,次固结系数随荷载增大而减小.次固结系数亦随着土样含水率和塑性指数的增长呈线性增长趋势,且Ca/Cc比值为常数.
The secondary consolidation coefficient has been considered constant in engineering. However, there are many research findings that the secondary consolidation coefficient is not a constant by means of laboratory test. The coefficient can change with the time. The secondary consolidation coefficient has nothing to do with the consoli-dation pressure. But many tests also show that the secondary consolidation coefficient has some correlations with the consolid…查看全部>>
孟静;王云龙
北京市勘察设计研究院有限公司 北京 100038北京市勘察设计研究院有限公司 北京 100038
建筑与水利
软弱黏性土次固结次固结系数压缩指数
Soft cohesive soil Secondary consolidation Secondary consolidation coefficient Compression index
《工程地质学报》 2012 (3)
466-470,5
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