摘要
传统井架可靠性分析中,将结构抗力和荷载效应看作确定量,与井架实际工况不符,也不能确定安全状态下井架具体的可靠度。为此,以ABAQUS软件为工具,对该海洋钻机塔形井架进行有限元分析,提取出所需工况的应力。采用经过验证的程序对所得应力进行计算,得到该井架的构件截面可靠指标。结果表明,风载和垂直载荷情况下的可靠指标明显低于最大钩载下的可靠指标,表明不可忽视风载对海洋钻机井架的影响。
According to the actual situation of derrick resistance and loading effect,the operating condition required by the analysis of the structural reliability of the offshore rig derrick was determined.With the ABAQUS software as the tool,a finite element analysis of the rig's tower-shaped derrick was conducted and the stress required by the operating condition was extracted.The verified program was adopted to calculate the obtained stress and the reliable indexes of the cross section of the derrick's component parts were obtained.The result showed that the reliable indexes under wind load and vertical load were remarkably lower than those under maximum hook load,indicating that the effect of wind load on the offshore rig derrick could not be ignored.
出处
《石油机械》
北大核心
2011年第6期15-18,92-93,共4页
China Petroleum Machinery
基金
国家科技重大专项"深水油气田开发钻完井工程配套技术"(2008ZX05026-001)
