規則的繰返し応力を受ける乾燥砂の体積変化*

概要

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The accumulation of volumetric strain under cyclic stress is one of the important properties of soil associated with the liquefaction or settlement of sand deposits during earthquakes. The purpose of this study is to clarify the characteristics of cumulative volumetric strain of relatively loose sand subjected to cyclic stress. In the case of sand specimens prepared with an established method, it is considered that the important factors affecting the volume change under cyclic stress are : (1) cyclic mobilized angle of internal friction on both the compression and extension sides. (2) amount of stress applied.（3）initial relative density of the specimen. In this paper, it is confirmed that as a function of these factors, an experimental formula to calculate the volumetric strain of sand subjected to constant amplitude cyclic stress can be derived, and this derived formula can successfully represent the measured volume change in the sand specimen
北見工業大学の論文