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中文摘要：
针对电化学除氯后钢筋与混凝土之间的粘结退化可能引起结构构件抗震性能劣化的状况,通过低周反复荷载试验,对混凝土桥墩电化学除氯处理后的抗震性能进行试验研究,分析试验构件的破坏特征、滞回曲线、耗能、骨架曲线和刚度退化的变化情况。研究结果表明：钢筋混凝土桥墩经电化学处理后,在反复荷载作用下,其破坏形式可能由弯曲破坏转化为弯曲-粘结破坏,滞回曲线由丰满变得干瘪,耗能能力降低,峰值后试件的承载力下降,刚度降低;在利用电化学除氯的优势延长钢筋混凝土结构使用寿命的同时,需要最大限度地降低电化学除氯带来的不利作用。
英文摘要：
Aimed at seismic behavior degradation of reinforced concrete（RC） pier specimen due to concrete debonding after electrochemical chloride extraction（ECE）,through low cyclic iterative loading test,seismic behavior test of RC pier after ECE was carried out.Variational conditions of the failure characteristics,hysteresis curves,energy dissipation,skeleton curve and rigid degradation of the specimens were analyzed.Results show that the failure mode of the specimen after ECE may transform flexural failure into flexure-bond failure under iterative loading,the hysteretic curves become less open,bearing capacity of specimen and the energy dissipation ability decrease and the stiffness degrades.Thus,lots of works needed to be done to avoid or reduce the disadvantage when using the advantage of ECE.
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