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钢悬链线立管与海底相互作用和疲劳分析

DOI: 10.3969/j.issn.1006-7043.201209037

Keywords: 钢悬链线立管, SCR, 海底作用, 边界层法, 疲劳分析??

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Abstract:

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。

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