摘要
采用准静态非线性有限元法,应用半潜式平台整体极限承载力计算方法,探讨平台艏部横撑破损、腐蚀等结构损伤对平台整体极限承载力的影响。通过对比平台完整和损伤状态时的极限承载力计算结果,横撑破损和腐蚀分别对横向受力工况和中拱工况下平台极限承载力影响最大,尤其当两者共同作用时,横浪作用下平台的剩余极限承载力降低较多。
With quasi-static nonlinear finite element method,the integrated ultimate strength of a semi-submersible platform is calculated for discussion of the influence of its structure damage,including cross-brace damage on fore part, corrosion and so on. By comparing ultimate strength of semi-submersible platform under intact and damaged condition,the ultimate strength of the platform is greatly influenced by cross-brace damage under transverse force and corrosion under hogging condition, respectively. Especially under both conditions, the remaining ultimate strength of the platform in beam sea reduces a lot.
出处
《船舶》
2013年第4期28-33,共6页
Ship & Boat
关键词
半潜式平台
极限承载力
准静态法
横撑破损
腐蚀
semi-submersible platform
ultimate strength
quasi-static method
cross-brace damage
corrosion
