Response of a porous seabed around breakwater heads
- 作者：J. Li ; D.-S. Jeng
- 关键词：Pore pressure ; Effective stress ; Porous seabed ; Breakwater heads
- 刊名：Ocean Engineering
- 出版年：2008
- 期刊代码：133_00298018
- 类别：et
- 出版时间：June 2008
- 卷：35
- 期：8-9
- 页码：864-886
- 文件大小：1328 K
摘要
The evaluation of wave-induced pore pressures and effective stresses in a porous seabed near a breakwater head is important for coastal engineers involved in the design of marine structures. Most previous studies have been limited to two-dimensional (2D) or three-dimensional (3D) cases in front of a breakwater. In this study, we focus on the problem near breakwater heads that consists of incident, reflected and diffracted waves. Both wave-induced oscillatory and residual liquefactions will be considered in our new models. The mistake in the previous work [Jeng, D.-S., 1996. Wave-induced liquefaction potential at the tip of a breakwater. Applied Ocean Research 18(5), 229–241] for oscillatory mechanism is corrected, while a new 3D boundary value problem describing residual mechanism is established. A parametric study is conducted to investigate the influences of several wave and soil parameters on wave-induced oscillatory and residual liquefactions around breakwater heads.