摘要
钢悬链线立管(SCR)与海床土体的接触问题对立管的疲劳寿命影响很大。运用ANSYS有限元软件中的接触单元模拟SCR与海床接触处的相互作用,考虑海床土体的非线性,建立SCR与海床系统有限元模型,并同已有的等价梁-弹簧模型进行了比较和验证。运用该模型进行计算分析,探讨了管道重量、土体模型和摩擦系数等对管道入土深度和弯矩的影响,为进一步研究SCR与海床的相互作用提供参考。
The contact problem of steel catenary riser （SCR）/soil has a great influence on the riser fatigue life. In the paper, ANSYS contact element is employed to simulate the interaction between SCR and soil. Finite element model of the system of SCR/soil is set up in consideration of the non-linear feature of the soil. The comparison of the present results and equivalent beam-spring model results are performed and they are in good agreement. The effect of the pipe weight, soil model and friction coefficient on the influence of the riser bending stresses and penetration is analyzed. The numerical model provides quite valuable references for further study on the SCR/ soil interaction.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第3期521-525,共5页
Periodical of Ocean University of China
基金
国家自然科学基金重点项目(50739004)
国家高技术研究发展计划项目(2006AA09Z356)资助
