Dynamic Analysis of the Interaction Between Catenary Riser and Soft Seabed  

作　　者：YU Jian-xing LIU Peng-fei YU Yang JIA Lu-sheng LIU Yi LIU Xin 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China [2]Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300072,China [3]CNOOC Research Institute,Beijing 100028,China [4]Stecol Corporation,Tianjin 300072,China

出　　处：《China Ocean Engineering》2025年第1期73-85,共13页中国海洋工程(英文版)

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51879189 and 52071234).

摘　　要：This study proposed a novel experimental platform to conduct dynamic loading tests of a truncated model steel catenary riser(SCR)within the touchdown zone(TDZ).The facilities of the platform,including a soil tank,a loading system,and a soil stirring system,are introduced in detail.A steel pipe with the same diameter as the in situ SCR has been used in the laboratory tests to investigate the vertical motion of the pipe and the effect of the trench on the lateral motion.As the amplitude of the vertical motion increases,the depth of the trench deepens,the bending moment range increases,and the excess pore water pressure at the bottom of the pipeline first accumulates and then dissipates during loading.The development trend of the trench depth and the influence of the soil strength on the SCR bending moment are also studied.During the test,a seabed trench develops,and its shape is similar to that of the in situ trench.

关 键 词：steel catenary riser(SCR) clay seabed steel pipe riser-seabed interaction touchdown zone(TDZ) 

分 类 号：TG1[金属学及工艺—金属学]