船体梁极限剪切强度是指船体梁发生剪切屈曲破坏所能承受的最大的剪力，它不同于一般的结构剪切屈服和板格理想弹性的剪切屈曲计算，很难获得精确的理论解。本文基于非线性有限元数值模拟和理论分析，研究板格、加筋板、船体梁的极限剪切强度特性和计算方法，提出船体梁极限剪切强度的计算公式，并进行了实船验证。结果表明，所提计算方法具有较高的精度。
The ultimate shear strength of hull beam refers to the sustained maximum shear to occur shear buckling failure of hull beam. It is different from the shear yield and shear buckling of general structure, and it is difficult to obtain an exact theoretical solution.Based on the nonlinear finite element numerical simulation and theoretical analysis, plate, plate frame and hull girder ultimate shear strength characteristics and calculation method are studied, the formulas of calculating ultimate shear strength of ship hull girder is presented, the actual ship verification is also carried out. The results indicate that the proposed method is appropriate for practical application.
2020,42(10): 47-50 收稿日期：2019-11-09
DOI：10.3404/j.issn.1672-7649.2020.10.010
分类号：U661.43
作者简介：彭营豪(1985-)，男，硕士，高级工程师，从事船舶结构设计和研究
参考文献：
[1] IACS. Double Hull Oil Tankers -Guide lines for Surveys, Assessment and repair of hull structures[S]. International Association of Cryospheric Sciences (IACS) rec No. 96, 2007.4.
[2] PAIK J K, KIM B J, SEO J K. Methods for ultimate limit state assessment of ships and ship-shaped off shore structures: part III hull girders[J]. Ocean Engineering, 2008, 35: 281-286
[3] SIMONSEN B C, ESTEFEN S F. Ultimate strength[C]// proc of 15th international ship and off shore structure congress. San Diego, 2003: 265-328.
[4] YAO T, BRUNNER E. Ultimate strength[C]// proc of 16th international ship and off shore structure congress. Southamptopm, 2006: 353-438.
[5] PAIK J K, BRUNNER E. Ultimate strength[C]// proc of 17th international ship and of shore structure congress. Korea Seoul, 2009: 375-474.
[6] SHAMA M A. Shear stress in bulk carriers due to shear loading[J]. Journal of Ship Research, 1975(09): 155-163
[7] 胡勇, 崔维成. 散货船碰撞损伤后的极限剪切强度[J]. 船舶力学, 2004(04): 68-79
[8] 中国船级社. 钢质海船入级规范(第9篇散货船和油船结构(CSR))[S]. 北京: 人民交通出版社, 2018.
[9] 方梦丹. 船体梁极限剪切强度计算方法研究[D]. 杭州: 浙江工业大学, 2016.
