Development of steel angles as energy dissipation devices for rocking connections
Development of steel angles as energy dissipation devices for rocking connections
复制标题
开发角钢作为摇摆连接的耗能装置
DOI：
10.1002/suco.201700178
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发表时间：
2018
影响因子：
3.2
通讯作者：
S. Pampanin
中科院分区：
文献类型：
--
作者：
R. Marreiros;V. Lúcio;S. Pampanin
本文重点讨论用于摇摆预制系统的耗能器的开发。本工作开发的消能器为外部使用，具有震后易于检查和更换的优点。开发耗能器时要考虑的主要参数是循环行为、强度和延展性。每个周期的循环行为必须稳定。所开发的耗散器必须以足够的强度做出响应。延展性也很重要，因为耗能器必须承受重大地震事件产生的位移而不发生故障。为此，描述了使用钢结构角材作为耗散器的实验活动，并展示了能够提供所需行为的解决方案。为了支持和补充实验测试，显示了使用有限元软件的二维数值模型，并提出了一种分析方法来描述弹性和塑性范围内的行为，从而设计元件。在这两种情况下，都与实验结果取得了良好的一致性。该分析方法的优点是易于实现钢角响应的估计。
This paper focuses on the development of energy dissipaters for rocking precast systems. The energy dissipaters developed in this work are to be used externally, having the advantages of being easy to inspect and replace after an earthquake. The main parameters to take into account for the development of the energy dissipaters are the cyclic behavior, the strength, and the ductility. The cyclic behavior has to be stable from cycle to cycle. The developed dissipater has to respond with adequate strength. The ductility is also important as the dissipater has to sustain the displacements applied by a major seismic event without failure. For this purpose, the experimental campaign using steel structural angles as dissipaters is described and solutions able to deliver the desired behavior are shown. To support and complement the experimental tests, two‐dimensional numerical models using a finite element software are shown and an analytical method is also presented to describe the behavior in both elastic and plastic ranges and thus design the elements. In both cases, good agreement with the experimental results is achieved. The analytical method has the advantage of being easy to implement for estimation of the steel angle response.