红岛航道桥钢箱梁疲劳寿命分析及腐蚀影响

Analysis of Fatigue Life and Corrosion Influence of Steel Box Beam of Hongdao Channel Bridge

采用实测数据对红岛航道桥的钢箱梁疲劳寿命进行了分析,并研究了材料腐蚀对钢箱梁抗疲劳性能的影响。结果表明,红岛航道桥钢箱梁具有良好的抗疲劳寿命,大于青岛海湾大桥的设计寿命值;在海洋腐蚀环境中,红岛航道桥钢箱梁仍具有良好的抗疲劳性能,不会因腐蚀而产生疲劳破坏。

Based on measured data, the fatigue life of steel box beam of Hongdao channel bridge was analyzed, and the corrosion effect on fatigue performance was studied. The results show that the steel box beam has good fatigue resistance according to the measured data, so the designed life can exceed predicted life. Steel box beam also has good fatigue resistance in marine corrosion environment, so that the fatigue damage would not be caused by corrosion.