船舶纵向下水船底结构局部加强研究

大中型船舶纵向下水时,往往会因支墩反力过大而需要检验船底局部强度和进行局部结构的加强.文章通过若干实船下水的墩反力计算及加强结构的设计和分析,提出了合理布墩和加强设置的若干原则,并以某汽车运输船为例,进行了船底局部结构三维有限元结构强度和稳定性的对比分析.结果表明,提出的结构加强原则和措施是合理、有效的.

Study on the local reinforcement of the bilge structure in ship end launching

Before end launching of large and medium ships,it is required to check the local strength of the bilge due to large block reactions and to strengthen the local structures. In this paper,some principles of arranging blocks properly and strengthening settings are proposed according to the calculations of block reactions and the design and analysis of additional strengthening for several real ship end launchings. The paper takes certain pure car carrier as an example,the contrast comparison between the strength and stability of 3D finite element structure of the local bilge structure is done. The results show that the proposed principles of strengthening structures are reasonable and effective.