摘要
基于Biot固结理论,结合波流相互作用理论,采用数值模型分析了分层海床在波浪-流共同作用下的响应,尤其是分层海床的液化可能性及剪切破坏深度.结果表明,顺流的存在不仅会增加液化风险,还会使剪切破坏深度增加,而采用高渗透性土作为覆盖层不仅能有效降低原海床液化风险,且能减小甚至避免原海床的剪切破坏,可用于海床保护.
The stability of layered seabed subjected to combined wave and current loading was studied by numerical model based on Blot's consolidation theory. The numerical results reveal that the existence of following current not only aggravates the possibility of liquefaction, but also increases the depth of shear failure. As a treatment, higher permeable soils layered upon seabed composed of low permeable soil will decrease the potential possibility of liquefaction as well as help to prevent original seabed from shear failure.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2014年第6期793-797,803,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(41330633)
关键词
波流荷载
分层海床
超孔隙水压力
有效应力
海床稳定性
wave-current loading
layered seabed
excess pore pressure
effective stress
seabed stability