Abstract: Vertical penetrated cracks were found on the reinforced concrete piers of overflow dam during safety check. In order to estimate the safety of the piers with cracks, 3D finite element model containing cracks and rebars was built with ANSYS program to investigate the probability of cracks extension in the worst load cases. The analysis results indicated that the cracks would still extend in service and strengthening was necessary.

Key words: sluice pier, crack, finite element method, nonlinear

摘要： 某大坝在进行安全鉴定检查时，发现其溢流坝闸墩两侧出现竖向贯穿性裂缝。为了评估带裂缝工作闸墩的安全性，采用ANSYS软件建立了含裂缝和钢筋的空间有限元模型，分析最不利荷载工况下裂缝扩展的可能性。分析结果表明：该闸墩如继续工作，裂缝会扩展，有必要进行加固处理。

关键词: 溢流坝闸墩, 裂缝, 有限元, 非线性