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首页> 外文会议>International symposium on deformation characteristics of geomaterials;IS-Seoul 2011 >Collapse of Loose Sands with Additions of Fines
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Collapse of Loose Sands with Additions of Fines

机译：松散的沙子倒塌并处以罚款

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Loose sand, when sheared under undrained conditions, tends to collapse rapidly with a very low residual strength. The consequences of this flow type response can be disastrous in gcotcchnical applications. Natural sands encountered in situ usually contain some amount of fines and the effect of fines on the undrained behavior of sand is of great concern. Several experimental studies have shown that the addition of fines increases the resistance of sand to collapse, whereas several others show the contrary. The lack of convergence and consistency results in difficulty in quantifying the effect of fines. This paper reports new data and interpretations from an experimental program aimed at a fundamental understanding of the undrained behavior of sands with additions of fines. Results are discussed with particular attention on the role of fines in modifying the position of critical state line and the potential for collapse.
机译：在不排水的情况下剪切时，松散的砂土往往会迅速塌陷，而残余强度却非常低。在医疗应用中，这种流动类型响应的后果可能是灾难性的。原位遇到的天然砂通常含有一定数量的细粉，并且细粉对砂不排水性能的影响是非常令人关注的。几项实验研究表明，添加细粉会提高砂子的抗崩塌性，而其他几项研究则相反。缺乏收敛性和一致性导致难以量化罚款的效果。本文报告了一个实验程序的新数据和解释，该程序旨在从根本上理解沙子的不排水行为以及附加的细度。讨论结果时要特别注意罚款在修改临界状态线的位置中的作用以及坍塌的可能性。

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