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工程力学  2014 

新型抗拔不抗剪连接件的滑移性能及其滞回模型

DOI: 10.6052/j.issn.1000-4750.2013.05.0422, PP. 46-52

Keywords: 抗拔不抗剪连接件,连接件尺寸,滑移性能,推出试验,滞回模型

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Abstract:

新型抗拔不抗剪T型连接件能有效改善组合梁负弯矩区受力性能,该连接件可以保证钢构件与混凝土板不发生分离,允许两部分产生滑移从而降低传递至混凝土板的剪力,避免混凝土开裂。为研究该新型连接件的滑移性能,对6个试件进行了拟静力推出试验。试验结果表明该连接件在较低荷载作用下可以产生较好的滑移效果,连接件外包泡沫塑料的尺寸对滑移特征影响显著。试验的荷载-位移曲线反映出试件的刚度随加载历史发生了明显变化,滑移作用引起了曲线的捏拢现象。该文基于Richard-Abbott曲线提出了针对该新型连接件的滑移滞回模型,模型参数物理意义明确,并通过试验结果验证了该滞回模型的合理性。

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