人造基床单桩稳定性的二维离散元模拟

人造基床是海洋码头与平台建设中的一项新技术。应用自行开发的离散元程序，模拟了人造基床中的单桩稳定性，所模拟的人造基床由袋装碎石与袋装砂两层组成。在保持袋装砂层高度不变的前提下，分别模拟了不同袋装碎石高度下桩在潮汐作用下的稳定性、罕见潮汐作用下桩的失稳过程。程序中用整体阻尼代表海水的阻尼作用。模拟结果表明，离散元法可以很好地体现人造基床与桩接触处的局部大变形特征，同时可通过模拟结果确定最佳人造基床高度。

Two-dimensional simulation with DEM of stability of single pile in man-made bedding

The man-made bedding is a new technique for building ocean dock and platform.By using self-developed discrete element method(DEM),the stability of single pile with embedded man-made bedding is simulated.The manmade bedding is composed of packed detritus and sand.The stability of pile is simulated for different heights of packed detritus under tide in the case of fixed height of packed sand respectively.The instability process of pile under infrequent tide is also simulated.The damping effects of seawater on...