【摘要】 通过对试验资料的统计分析,研究纵筋锈蚀对钢筋混凝土(RC)柱抗震性能的影响。首先根据锈蚀RC柱抗震试验现象,总结纵筋锈蚀对RC柱骨架曲线的影响规律;建立锈蚀RC柱性能化抗震能力评价的指标体系,计算锈蚀RC柱各个抗震性能指标。分析纵筋锈蚀率对锈蚀RC柱承载能力、刚度、变形能力和耗能能力的影响,建立锈蚀RC柱抗震性能指标体系的衰变模型。结果表明,钢筋锈蚀对RC柱各抗震性能指标有不同程度影响,其中对退化刚度的影响最大。研究成果为完善相关规范规程提供了理论依据,可为锈蚀混凝土结构抗震可靠性评估提供参考。更多还原

【Abstract】 The effect of the reinforcement corrosion on the seismic behavior of the RC column was investigated based on the regression analysis of a large test sample.According to the observed test phenomenon,the influence law of the reinforcement corrosion on the backbone curve was summarized.The index system for the seismic behavior evaluation of the corroded RC column was established and was calculated according to the collected test data.The influence of the reinforcement corrosion ratio on the bearing capacity,stiffness,deformation capacity as well as energy dissipation capacity was analyzed respectively,and the attenuation models for the seismic behavior evaluation of the corroded RC column was established.The result shows the reinforcement corrosion ration has different effect on the seismic index system,and the degrading stiffness is most sensitive to corrosion ratio.This research is helpful for the improvement of the relative design codes.更多还原