摘要
探讨了应用离散元分析方法求解地震荷载下沉箱和背后填土大变形问题的可能性,开发了能描述沉箱的平面形状及沉箱与土体摩擦特性的矩形单元。并通过简单实例分析了地震时沉箱码头的变形,再现了沉箱码头地震灾害的发生过程,为沉箱在地震情况下的大变形分析提供了一种新途径。比较了两种沉箱模型对分析结果的影响,提出了相应的方法。
The possibility of using distinct elements in solving large deformation seismic response of concrete caissons and backfills is discussed. A rectangular element is developed to present box caisson geometry shape and soil frictional behavior. As a numerical example, seismic response of a concrete caisson quay wall is analyzed. The method presented here can be used as a new solution to the large deformation of the caisson due to earthquake loading. Two computational models are compared in order to study effects of distinct element types on the numerical results.
出处
《海洋工程》
CSCD
北大核心
2004年第4期131-136,共6页
The Ocean Engineering
关键词
矩形单元
离散元
沉箱
地震荷载
大变形分析
rectangular element
distinct elements
caisson
earthquake
large deformation analysis
