| 电化学除氯后钢筋混凝土桥墩的抗震性能 |
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| 引用本文： | 郭育霞,贡金鑫.电化学除氯后钢筋混凝土桥墩的抗震性能[J].中国公路学报,2011(6). |
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| 作者姓名： | 郭育霞 贡金鑫 |
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| 作者单位： | 大连理工大学土木工程学院;太原理工大学矿业工程学院; |
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| 基金项目： | 国家自然科学基金重点项目(90815027) |
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| 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。
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| 关 键 词： | 桥梁工程 钢筋混凝土桥墩 低周反复荷载试验 电化学除氯 抗震性能 |
Seismic Behavior of Reinforced Concrete Pier After Electrochemical Chloride Extraction |
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| GUO Yu-xia,GONG Jin-xin.Seismic Behavior of Reinforced Concrete Pier After Electrochemical Chloride Extraction[J].China Journal of Highway and Transport,2011(6). |
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| Authors: | GUO Yu-xia GONG Jin-xin |
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| Institution: | GUO Yu-xia1,2,GONG Jin-xin1(1.School of Civil Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China,2.School of Mining Technology,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China) |
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| Abstract: | 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 fle... |
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| Keywords: | bridge engineering reinforced concrete pier low cyclic iterative loading test electrochemical chloride extraction seismic behavior |
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