海底管线地震应力影响分析  

Analysis on the effects of dynamic response of submarine pipeline under seismic loading

作　　者：张小玲[1] 栾茂田[1] 郭莹[1] 曲鹏[1] 

机构地区：[1]大连理工大学土木水利学院岩土工程研究所,辽宁大连116024

出　　处：《海洋工程》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)

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.

关 键 词：海底管线 孔隙水压力 地震荷载 粘弹性人工边界 

分 类 号：TU279.7[建筑科学—建筑设计及理论]