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首页> 外文期刊>配管·装置·プラント技術 >Dynamic behaviors of a hollowed; cylindrical soil specimen under cyclic torsional shear loading (part 1) -- effect of cyclic excitation; frequency and bulk density
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Dynamic behaviors of a hollowed; cylindrical soil specimen under cyclic torsional shear loading (part 1) -- effect of cyclic excitation; frequency and bulk density

机译：挖空的动态行为;循环扭转剪切载荷下的圆柱形土壤试样（第1部分）-循环激励的影响;频率和体积密度

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摘要

Indoor experiments using cyclic torsional shear loading test method were conducted to clarity the dynamic behaviors of soil compaction induced by repetitive passages of a tractor in the field, particularly focusing on the turning operation. It was ascertained that an increase in the number of cyclic loading caused continuing increment of both torsional shear strain and pore water pressure until the soil specimen failed, since the developing pore water pressure weakened the soil specimen. Themagnitude of torsional shear strain corresponding to cyclic torsional shear stress was affected by loading frequency and bulk density. However, the effect of loading frequency and bulk density was found to be not clear after investigating the relationship between the torsional shear strain and the effective stress ratio.
机译：进行室内试验，使用循环扭转剪切载荷试验方法，以明确拖拉机在田间反复通过所引起的土壤压实的动态行为，特别是在转向操作上。可以确定的是，循环荷载数量的增加导致扭转剪切应变和孔隙水压力的持续增加，直到土壤试样破坏为止，因为不断发展的孔隙水压力削弱了土壤试样。荷载循环频率和堆积密度影响与循环扭转剪应力相对应的扭转剪应变大小。然而，在研究了扭剪应变与有效应力比之间的关系后，尚不清楚加载频率和堆积密度的影响。

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