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弯曲破坏钢筋混凝土柱的变形性能研究

DOI: 10.13197/j.eeev.2014.04.212.lij.029, PP. 212-218

Keywords: 钢筋混凝土柱,变形性能,数值模拟,弯矩-曲率,ADINA

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Abstract:

钢筋混凝土柱是钢筋混凝土结构的主要承载构件,研究钢筋混凝土柱的破坏形式与破坏过程对最终掌握结构整体的破坏过程和倒塌机理十分重要。本文通过对美国太平洋地震研究中心钢筋混凝土柱数据库中的97根弯曲破坏且有最终破坏实验记录的钢筋混凝土柱进行了统计,分析了钢筋混凝土柱的变形性能,以及影响其变形性能的主要因素;应用ADINA的弯矩-曲率梁单元对其进行有限元数值模拟,并与实验结果进行比较,认为三折线弯矩-曲率简化模型对钢筋混凝土柱变形性能的分析结果较为精确,适用于构件变形性能评价,其分析方法简单,适合设计人员应用。

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