Pitting corrosion commonly shaped in hull structure due to marine corrosive environment seriously causes the deterioration of structural performance. This paper deals with the ultimate strength behaviors of stiffened ship panels damaged by the pits subjected to uniaxial compression. A series of no-linear finite element analyses are carried out for three stiffened panels using ABAQUS software. Influences of the investigated typical parameters of pit degree (DOP), depth, location and distribution on the ultimate strength strength are discussed in detail. It is found that the ultimate strength is significantly reduced with increasing the DOP and pit depth and severely affected by the distribution. In addition, the pits including their distributions on the web have a slight effect on the ultimate strength. Compared with regular distribution, random one on the panel result in a change of collapse mode. Finally, an empirical formula as a function of corrosion volume loss is proposed for predicting the ultimate strength of stiffened panel.

由于海洋腐蚀环境，通常在船体结构中形成的点蚀严重导致结构性能下降。本文研究了单轴压缩下受坑破坏的刚性船板的极限强度行为。使用ABAQUS软件对三个加劲板进行了一系列非线性有限元分析。详细讨论了所研究的凹坑度（DOP），深度，位置和分布的典型参数对极限强度的影响。发现随着DOP和凹坑深度的增加，极限强度显着降低，并且受到分布的严重影响。另外，凹坑包括其在网上的分布对极限强度有轻微影响。与正态分布相比，面板上的任意一个会导致塌陷模式发生变化。最后，提出了随腐蚀体积损失而变化的经验公式，用于预测加劲板的极限强度。