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| 深水导管架桩腿制造误差与抗屈曲特性研究 | |
| 引用本文： | 赵天奉,段梦兰,杨晓刚,尹汉军.深水导管架桩腿制造误差与抗屈曲特性研究[J].船舶力学,2009,13(2). |
| 作者姓名： | 赵天奉 段梦兰 杨晓刚 尹汉军 |
| 作者单位： | 1. 大连理工大学船舶工程学院,辽宁大连,116023 2. 中国石油大学海洋油气研究中心 3. 海洋石油工程股份有限公司,天津塘沽,300452 |
| 摘 要： | 文章通过典型算例详细阐述了具有制造误差的深水导管架桩腿屈曲分析方法,将线性扰动加载的特征值届曲预测算法和描述几何非线性屈曲过程的改进的Riks算法应用于导管架桩腿的详细设计校核,对比研究了模态扰动模拟制造误差和直接模拟制造误差模型的分析结果,并对典型桩腿结构在静水外压下的弹塑性屈曲响应特性进行了研究.分析结果表明,随着制造误差的增加,导管架桩腿抗静外压的临界屈曲载荷在下降,而且制造误差大的桩腿的极限承载能力较低. |
| 关 键 词： | 导管架 桩腿屈曲 制造误差 改进的Riks算法 临界屈曲载荷 |
Fabrication deflection of jacket pipe in deep water and its stiffness against buckling |
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| ZHAO Tian-feng,DUAN Meng-lan,YANG Xiao-gang,YIN Hanjun.Fabrication deflection of jacket pipe in deep water and its stiffness against buckling[J].Journal of Ship Mechanics,2009,13(2). | |
| Authors: | ZHAO Tian-feng DUAN Meng-lan YANG Xiao-gang YIN Hanjun |
| Institution: | 1 Department of Naval Architecture & Ocean Engineering;Dalian University of Technology;Dalian 116023;China;2 Offshore Oil/Gas Research Center;China University of Petroleum;Beijing 102249;3 Offshore Oil Engineering Ltd.;Tanggu Tianjin 300452;China |
| Abstract: | The effects of fabrication deflection of jacket on pipe buckling under hydrostatic pressure of deep water are discussed,and the eigenvalue buckling prediction algorithm and modified Riks method are presented.Two kinds of FE models including fabrication deflection are developed and the elastic-plastic response of jacket pipe buckling is studied.The analyses results indicate that the fabrication deflection lessens critical buckling load and ultimate carrying capacity of the jacket pipe. |
| Keywords: | jacket leg buckling fabrication deflection modified Riks method critical buckling load |
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