CAJ | 학술논문

对水下脐带缆的海底稳定性的动态分析方法进行了探讨，以实现更准确的脐带缆水动力载荷的计算以及更有效的脐带缆的海床稳定性设计。对目前已有的管线稳定性设计方法和经验进行了总结，然后基于有限元方法进行了脐带缆海底稳定性的动态分析，比较了Morison方程法与Fourier系数法计算水动力载荷的优劣，并基于Fourier系数法对脐带缆海底稳定性进行了参数敏感度的分析。研究表明：Fourier系数法在计算时变水动力载荷方面具有优势，实现了脐带缆海底稳定性动态分析的一般步骤，并总结出部分参数对脐带缆海底稳定性的影响程度，有助于更好地进行脐带缆的海底稳定性设计。
대수하제대람적해저은정성적동태분석방법진행료탐토，이실현경준학적제대람수동력재하적계산이급경유효적제대람적해상은정성설계。대목전이유적관선은정성설계방법화경험진행료총결，연후기우유한원방법진행료제대람해저은정성적동태분석，비교료Morison방정법여Fourier계수법계산수동력재하적우렬，병기우Fourier계수법대제대람해저은정성진행료삼수민감도적분석。연구표명：Fourier계수법재계산시변수동력재하방면구유우세，실현료제대람해저은정성동태분석적일반보취，병총결출부분삼수대제대람해저은정성적영향정도，유조우경호지진행제대람적해저은정성설계。
A dynamic analysis of the subsea umbilical on-bottom stability has been conducted for the more accurate calculation of the hydrodynamic force and the more effective design of the umbilical . And the current available methods for subsea pipeline stability analysis have been presented and com-pared .On this basis ,the finite element method is used for the dynamic analysis .The hydrodynamic forces are estimated by both Morison equation and Fourier coefficient method .The different results of changing the value of parameters are also studied .The result shows that the advantage of Fourier co-efficient method in estimating hydrodynamic forces ,realizes the dynamic analysis process of subsea umbilical on-bottom stability and that the factors affecting the stability will contribute to the future research and desig n .