摘要
Spar是一种新型的深海油气资源开发平台,由于结构比较复杂,平台硬舱结构的弯曲极限强度很难用常规的理论方法进行计算。采用非线性有限元分析方法,分析结构构件、边界及载荷条件对硬舱结构弯曲极限承载能力的影响。结果表明:单舱段和两舱段的极限弯矩计算结果基本一致;当弯矩载荷方向平行中心井对角线方向时,结构的抗弯强度较弱;重力载荷对舱段的极限弯矩影响较小;结构内部的环向框架能显著提高舱段的抗弯强度。
Spar platform is a new type of facility for deep-sea oil and gas exploitation.Because of the complexity of the structure,it is difficult to calculate the ultimate bending capacity of Spar hard tank with common methods.In this paper,the influences of structural components,boundary and load conditions on the ultimate bending capacity of Spar hard tank are studied by using nonlinear finite element method.The results indicate that there is little difference between the calculated ultimate moments of one and two frames of hard tank,the ultimate bending capacity is lower when the direction of the moment load parallel with the diagonal of moon pool,gravity load has little influence on the ultimate bending capacity of hard tank and the ringed frames can increase the ultimate bending capacity of hard tank obviously.
出处
《海洋工程》
CSCD
北大核心
2010年第3期76-79,共4页
The Ocean Engineering
基金
国家科委863计划资助项目(2006AA09A109-6)
关键词
SPAR平台
硬舱
弯曲极限强度
spar platform
hard tank
ultimate bending capacity
