预防波浪作用下海底管道起浮的临界埋深分析方法  

An Analysis Method of Critical Burial Depth for Prevention of Flotation of Submarine Pipeline

作　　者：漆文刚[1,2] 高福平[1,2] 王俊勤 

机构地区：[1]中国科学院力学研究所流固耦合系统力学重点实验室,北京100190 [2]中国科学院大学工程科学学院,北京100049 [3]中海油研究总院,北京100028

出　　处：《中国造船》2016年第A01期68-79,共12页Shipbuilding of China

摘　　要：在波浪载荷作用下,埋置于海床土体中的海底管道受到循环超静孔隙水压的影响.在行进波浪的波谷下方,埋管将产生向上的瞬态吸力;若管道埋深不足,则可发生上浮失稳.基于波浪诱导海床土体超静孔压响应理论解,分析获得了埋管上浮力和极限土阻力,进而提出了一种预防波浪作用下海底管道起浮的临界埋深分析方法.开展参量分析,研究了管道、波浪和土体主要参数对临界埋深的影响规律.Periodic excess pore-pressure is induced around the buried pipeline under wave loadings. In the trough area of progressive waves, the momentary uplift force acting on the pipeline would emerge. Flotation of the pipeline may occur if the burial depth is not adequate. On the basis of an analytical solution for the wave-induced pore-pressure in the seabed, the uplift force and the vertical peak soil resistance are deduced. A method to evaluate the critical burial depth for prevention of dotation of the submarine pipeline is presented. A parametric analysis is conducted to investigate the ejects of pipeline conditions and wave/soil parameters on the critical burial depth.

关 键 词：波浪 超静孔隙水压 海底管道 临界埋深 

分 类 号：TE973.92[石油与天然气工程—石油机械设备]