基于压缩载荷作用下极限强度模型试验相似原理，以第七代钻井平台撑杆结构为研究对象，开展撑杆结构极限强度试验模型设计，并完成模型试验。通过开展线性状态结构模型试验，释放结构焊接残余应力，进而开展极限状态模型试验，获得撑杆结构应力分布、失效模式以及极限载荷等。通过本文的研究，为第七代钻井平台撑杆结构优化设计提供支撑。
Based on the similarity principle of ultimate strength model test under compression load, this paper takes the strut structure of the seventh generation drilling platform as the research object, carries out the ultimate strength test model design of the strut structure, and completes the model test. By carrying out the linear state structure model test, the residual stress of structure welding is released, and then the limit state model test is carried out to obtain the stress distribution, failure mode and limit load of strut structure. Through the research of this paper, it provides support for the optimization design of the strut structure of the seventh generation drilling platform.
2020,42(10): 94-97 收稿日期：2020-03-09
DOI：10.3404/j.issn.1672-7649.2020.10.019
分类号：U661.4
基金项目：创新专项(工信部[2018]169号)
作者简介：赵南(1985-)，男，高级工程师，主要从事舰船结构强度研究
参考文献：
[1] 王杰. 半潜式钻井平台甲板结构极限强度分析[D]. 镇江: 江苏科技大学, 2014.
WANG Jie. Ultimate strength analysis of semi-submersible drilling platform deck structure[D]. Zhenjiang: Jiangsu University of Science and Technology, 2014.
[2] 赵南. 复杂载荷作用下超大型浮体结构极限强度研究[D]. 北京: 中国舰船研究院, 2015.
ZHAO Nan. Study on the ultimate strength of very large floating structure under complex loads[D]. Beijing, China Ship Research and Development Academy, 2015.
[3] 赵南, 顾学康, 祁恩荣, 等. 复杂载荷作用下连接器基座加强区结构极限强度研究[J]. 船舶力学, 2018, 7(22): 854-864
ZHAO Nan, GU Xue-kang, QI En-rong, et al. Theoretical and experimental study in the ultimate strength of the VLFS connector foundation support reinforcing area structure under complex loads[J]. Journal of Ship Mechanics, 2018, 7(22): 854-864
[4] 何福志, 万正权. 船体结构总纵极限强度的简化逐步破坏分析[J]. 船舶力学, 2001, 5(5): 21-35
HE Fu-zhi, WAN Zheng-quan. A simplified progressive collapse analysis of ultimate longitudinal strength of ship structures[J]. Journal of Ship Mechanics, 2001, 5(5): 21-35
[5] GANNON L, LIU Y, PEGG N, et al. Effect of welding-induced residual stress and distortion on ship hull girder ultimate strength[J]. Marine Structures, 2012(28): 25-49
[6] PAIK J K, KIM B J. Progressive collapse analysis of thin-walled box columns[J]. Thin-Walled Structures, 2008(46): 541-550
[7] AMLASHI H K K, MOAN T. Ultimate strength analysis of a bulk carrier hull girder under alternate hold loading condition-A case study Part 1: Nonlinear finite element modelling and ultimate hull girder capacity[J]. Marine Structures, 2008(21): 327-352
[8] GU Hai-ying, FENG Jia-quan, TANG Ming-gang, et al. Study on ultimate strength of braced structure of Very Large Floating Structure[J]. Journal of Ship Mechanics, 2018, 22(7): 845-856
[9] XU M C, SOARES C G. Comparisons of calculations with experiments on the ultimate strength of wide stiffened panles[J]. Marine Structures, 2017(31): 82-101
