摘要
钢悬链线立管触底段与海底相互作用的复杂特性是工程设计中的一大难题,既要保证悬链线立管的弯曲在弹性范围内又要保证在其使用周期内满足疲劳要求。采用解析法对立管的形态和受力性能进行了初步的分析,将悬链线分为悬链段、边界层段和触地段3个部分,保证各段之间的连续性。同时用解析法和有限元法比较了刚-塑性海床,塑性海床和沟状海床3种不同海底模型,从而验证了理论方法的可靠性并运用理论方法对管道进行了疲劳评估。
The complex nature of seabed interaction with steel catenary risers （ SCR） in the touchdown zone （ TDZ） of SCRs causes serious difficulties in engineering design. More specifically, a design must ensure not only the cur-vature of a catenary riser well within the elastic limits, but also the fatigue damage within the acceptable scope dur-ing the life cycle. An analytical method was used for the preliminary analysis of the shape of a riser and its load-car-rying performance. In this paper, the catenary was divided into three sections：catenary section, border layer sec-tion and touchdown section, and the continuity between two adjacent sections was assured. The analytical method and the finite element method were used to compare three different seabed models including rigid-plastic seabed, plastic seabed and ditch-shape seabed. A theoretical method was applied to the fatigue evaluation of the pipeline, and the reliability of the hypothesis when tested with the theoretical method was preliminarily verified.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2014年第2期155-160,共6页
Journal of Harbin Engineering University
关键词
钢悬链线立管
海底作用
边界层法
疲劳分析
SCR
steel catenary riser
SCR
seabed interaction
boundary layer method
fatigue analysis
