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工程力学  2013 

低周反复荷载下型钢混凝土-钢筋混凝土竖向混合结构转换柱受剪性能试验研究

DOI: 10.6052/j.issn.1000-4750.2011.11.0729

Keywords: 型钢混凝土,钢筋混凝土,延性,竖向转换柱,受剪性能

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Abstract:

为了研究型钢混凝土-钢筋混凝土竖向混合结构转换柱的受剪性能,对16个转换柱试件和1个钢筋混凝土柱对比试件进行了低周反复荷载试验。分析了转换柱试件的破坏形态,研究了其位移延性、承载能力、强度衰减,以及耗能能力等方面的力学性能,并与钢筋混凝土柱试件进行了对比。试验结果表明:转换柱的破坏形态可以分为剪切破坏、粘结破坏和弯曲破坏;转换柱中钢与混凝土之间的相互作用方式导致了其特殊的破坏特征;发生粘结破坏和弯曲破坏的试件,其最大承载力之后的强度衰减较大;转换柱的耗能能力介于型钢混凝土柱与钢筋混凝土柱之间。绝大多数转换柱试件的延性性能能够满足位移延性系数大于3的抗震设防要求。

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