摘要
基于Biot动力固结理论建立海床-管线相互作用的计算模型。利用粘弹性人工边界,以大型有限元软件ADINA为平台对El Centro地震波作用下的海底管线的动力响应进行分析,重点讨论管线覆盖层几何形状以及海床土各向异性对海床土体的孔隙水压力和管线内应力的影响,更为实际地反映了海底管线的地震应力作用。
Based on the Biot＇s theory of consolidation, the model of the seabed-pipeline interaction is established using viscous-elastic artificial boundary in this paper. The distribution of the pore pressure in seabed soil and the dynamic response of submarine pipeline are studied under El Centro seismic wave by virtue of the general-purpose FEM analysis package ADINA. The effects of geometry of cover layer and the elastic anisotropic soil behaviors on seismic-induced pore pressure and internal stresses are discussed emphatically. It actually shows the validity and practicality of dynamic response of submarine pipeline under seismic loading.
出处
《海洋工程》
CSCD
北大核心
2008年第2期83-89,95,共8页
The Ocean Engineering
基金
国家自然科学基金重点基金资助项目(50439010、50639010)
国家自然科学基金资助项目(50579006)
教育部科学技术研究项重大项目(305003)
关键词
海底管线
孔隙水压力
地震荷载
粘弹性人工边界
submarine pipeline
pore pressure
seismic loading
vlscous-elastic artificial boundary
