均布压力作用下加筋板结构局部补强分析

摘要

The decrease of shell plate thickness due to corrosion poses a threat to the safety of ship and ocean engineering structure.Therefore, the local reinforcement of the structure is required.When the local reinforcement of structure is applied, one of the most commonly used methods is cover the corroded area of structure by welding or bonding a reinforcing plate.The relationship between reinforcement method, thickness of reinforcing plate and maximum stress in structure was studied by FEA.The influence of reinforcement method and thickness of reinforcing plate on the effect of reinforcement was analyzed.%采用有限元分析方法分析对局部腐蚀的加筋板结构分别采用焊接、粘接补板的方法进行局部补强后原始结构和补板的强度;研究局部补强后加筋板结构的强度与补强方式、贴板厚度等参数之间的关系,计算不同补强方式、不同厚度的贴板补强后结构的最大应力值;对比缺陷区域最大应力值的大小,分析补强方式和贴板厚度对补强效果的影响.分析表明,局部补强后加筋板结构缺陷区域的最大应力值随着补强板厚度的增加而逐渐减小,但补强板的存在并未明显改变补强区域与原加筋板结构连接边界处的应力分布趋势,且使用相同厚度的补强板时,粘接补强的效果要明显好于焊接补强.