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锈蚀钢筋混凝土柱抗震性能的非线性分析

DOI: 10.13197/j.eeev.2014.03.77.chenfj.011, PP. 77-83

Keywords: 钢筋锈蚀,钢筋混凝土柱,OPENSEES,抗震性能,非线性分析

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Abstract:

将氯离子侵蚀环境下钢筋混凝土结构中钢筋锈蚀随时间变化的模型,与锈蚀后钢筋几何和力学性能变化的模型结合起来,以预测钢筋混凝土柱在氯离子侵蚀环境中工作的抗震性能时程变化。钢筋混凝土结构长期使用中的性能退化主要归结为钢筋的锈蚀,因此重点考虑这一因素,尤其是坑蚀对钢筋混凝土柱抗震性能的影响。利用OPENSEES软件依照钢筋混凝土柱抗震试验建立非线性分析模型,再引入钢筋锈蚀这一变化参数,模拟预测了钢筋锈蚀一定年限后钢筋混凝土柱的地震响应,定量地描述了钢筋锈蚀对钢筋混凝土柱抗震性能的影响。

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