【摘要】 为了探究腐蚀程度对水塔结构抗震性能的影响，文章选取某钢筋混凝土倒锥壳式水塔，借助ABAQUS软件建立了反映不同服役时期的有限元模型,并对其进行地震易损性分析。首先依据材料老化特征，建立了服役0年、35年和50年的水塔模型，选取12条地震动对3个水塔模型进行了增量动力分析，以最大顶点位移为损伤指标，绘制出各腐蚀阶段的水塔地震易损性曲线与破坏概率发生曲线，并进行了详细的对比分析。研究结果表明，水塔在地震载荷作用下，其顶部最大位移随服役时间延长而增大，结构的破坏概率呈现上升趋势，明确表示出抗震性能随时间推移有所减退，所以在水塔的抗震设计中，腐蚀效应需要十分重视。更多还原

【Abstract】 To investigate the influence of corrosion on the seismic performance of water towers, this study selects a reinforced concrete inverted conical shell water tower as a case study. Finite element models representing different service periods were developed using ABAQUS software to perform a seismic vulnerability analysis. Based on material aging characteristics, three models of the water tower were established, representing service lives of 0, 35, and 50 years. Incremental dynamic analysis was conducted on the three models using a suite of 12 ground motions. Using the maximum top displacement as the damage index, seismic vulnerability and failure probability curves were developed for the water tower at each corrosion stage, followed by a detailed comparative analysis. The results show that under seismic loading, the maximum top displacement of the water tower increases with service time, and its structural failure probability increases,indicating a clear degradation in seismic performance over time. Therefore, it is crucial to consider corrosion effects in the seismic design of reinforced concrete water towers.更多还原