Characterization of sand convective motions at a vertical wall subjected to long-term cyclic loading  

作　　者：Dawei Guan Jialong Li Yee-Meng Chiew Jisheng Zhang 

机构地区：[1]Key Laboratory of Ministry of Education for Coastal Disaster and Protection,Hohai University,Nanjing 210024,China [2]College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210024,China [3]Shanghai Investigation,Design and Research Institute Co.,Ltd,Shanghai 200335,China [4]School of Civil and Environmental Engineering,Nanyang Technological University,Singapore 639798,Singapore

出　　处：《Fundamental Research》2024年第2期334-343,共10页自然科学基础研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(52122109,51920105013,and 52071127).

摘　　要：By conducting a two-dimensional experimental study,this paper aims to enhance the understanding of the mechanism of sand convective motions in the vicinity of a wall subjected to long-term cyclic lateral loadings.The experimental tests were conducted in a rectangular sandbox with a transparent front-wall,through which the process of sand particle motions could be recorded by using a high-resolution digital camera.The images were processed with a high time-resolved PIV(Particle Image Velocimetry)system.Based on the experimental data,this work(1)presents the sand flow field in the convective zones;(2)provides means to describe the convection mechanism;(3)proposes the relationships between the loading conditions and dimensions of the region with intense sand movement;and(4)elaborates the similarity of the sand flow velocity structure within the sand convective zones.

关 键 词：Vibration Soil/structure interaction DEFORMATION Particle image velocimetry Laboratory tests 

分 类 号：O35[理学—流体力学]