落球法测定波动液化土粘滞性的试验研究The Experimental Study on Viscosity of the Wave-Induced Liquefaction Silty Soil by Falling Ball Method
陈昌昀,张鹏,许国辉,刘志钦,许兴北,任宇鹏
摘要(Abstract):
海底的粉质土在波浪作用下发生液化,液化后的土体产生流体一样的波动。本文在进行液化粉质土波动试验过程中,利用落球法进行了液化土的黏滞系数的测试试验。试验采用了铜质、铁质和氧化锆等不同密度的光滑球体,通过位移传感器记录密度球在液化后土体中的位移和运动时间,换算出密度球在液化土体中沉降的平均速度,利用斯托克斯公式计算给出液化土的黏滞系数。结果给出试验用液化土体的黏滞系数在10kPa·s的量级。
关键词(KeyWords): 土体液化;落球法试验;黏滞系数;斯托克斯公式
基金项目(Foundation): 国家自然科学基金项目(41576039)资助~~
作者(Author): 陈昌昀,张鹏,许国辉,刘志钦,许兴北,任宇鹏
DOI: 10.16441/j.cnki.hdxb.20160011
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