Correlation Between Yield Stress of Silty Mud Sediments and Continuous Oscillatory Shearing Properties

作     者：CHEN Xiao-hui ZHANG Min-xi YUE Shao-lin ZHOU Huan YU Guo-liang CHEN Xiao-hui;ZHANG Min-xi;YUE Shao-lin;ZHOU Huan;YU Guo-liang

作者机构：SKLOECISSEDepartment of Ocean and Civil Engineering Shanghai Jiao Tong UniversityShanghai 200240China CCCC Road&Bridge Special Engineering Co.Ltd.Wuhan 430061China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2022年第36卷第2期

页      面：223-232页

核心收录：

学科分类：081505[工学-港口、海岸及近海工程] 08[工学] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.51779137) 

主　　题：silty sediments yield stress water content particle diameter oscillatory shear strength 

摘      要：Analyzing the rheological properties of silty beds subjected to continuous oscillatory shear loading is crucial for understanding the morphological deformation of the seabed and ensuring safety in geological and marine engineering *** this study,the effects of oscillatory shearing properties on the yield stress(S_(u))of silty sediments were quantitatively *** effects of oscillatory shear strength(0-3),water content(26.6%-70.84%),and particle diameter(8.79-50μm)were examined extensively through a series of laboratory *** results indicated that the three aforementioned parameters were the major factors that affected the rheological characteristics of silty ***,their effects could be elucidated using the yield stress of cohesive sediments as the indicator *** ratio of yield stress(S_(u)/S_(u0))varied as the oscillatory shear strength increased up to a critical value,Λ_(cr).S_(u)bsequently,the ratio remained at a constant *** was deduced that the yield stress decreased with increasing oscillatory shear strength forΛΛ_(cr),the sediments entered an equilibrium fluidization stage,and the yield stress remained almost constant,irrespective of the oscillatory shear ***,during the equilibrium fluidization stage,it was observed that the ratio S_(u)/S_(u0)did not vary with water content but decreased as the particle diameter ***,based on regression analysis of the experimental data for non-equilibrium and equilibrium fluidization stages,a correlation between yield stress of silty sediments and continuous oscillatory shearing properties was *** correlation can aid in understanding the changes in solid resistance and assessing safety in piling ***,it can provide a theoretical guidance for reducing soil resistance in marine structures using mechanical vibrations.