Velocity Response Analysis of the SCR Rigid Body Swing under Wave and Z-direction Motion

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Zhu, Bo^1 ; Huang, Wei-Ping^1 ; Yao, Xing-Long^1 ; Liu, Juan^2

Shangdong Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao

266071, China^1

Institute of Civil Engineering, Agriculture University of Qingdao, Qingdao

266009, China^2

关键词: Slender beams;    Speed response;    Steel catenary risers;    Structure velocity;    Transverse flow;    Velocity response;    Wave modeling;    Z-directions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/2/022067/pdf
DOI  :  10.1088/1755-1315/189/2/022067

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Under the action of waves or current, steel catenary riser(SCR) has rigid body oscillation. On the basis of the slender beam model and the wave model and the rigid body swing, the influence of rigid body swing on the cross flow of structure velocity is researched. Calculation shows that under the action of wave and top motion, the change of speed response of in 10th-200th is the largest in 10th, and then decreases gradually to the minimum of 200th. Under the action of wave superimposed rigid body oscillation and top motion, this phenomenon of decreasing with the increase of water remain existing, indicating that rigid body oscillation has little effect and the maximum impact of rigid body swing on structure velocity is approximately 2%. The percentage change of speed response in 10th-200th is the largest in 140th, and is the least in 10th. For the middle interval of 80th-140th, working condition 3 has the largest influence. It is hoped that some reasonable and practical suggestions can be provided for the calculation of transverse flow velocity.