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首页> 外文期刊>Magazine of Concrete Research >Seismic performance of ductile connections between precast beams and roof elements
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Seismic performance of ductile connections between precast beams and roof elements

机译：预制梁与屋顶单元之间延性连接的抗震性能

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摘要

The seismic vulnerability of precast reinforced concrete buildings is often governed by the performance of mechanical connections between precast elements. This aspect was highlighted by recent seismic events in Italy, where several collapses were registered among industrial buildings typical of Italian practice. The building damage was related to failure of connections between beams and columns and between beams and roof elements, which led to the loss of support of the structural elements. Starting from the results of an experimental campaign, the present work investigates the use of ductile connections between precast beams and roof elements suitable for both new structures and as a retrofit measure of existing ones. These connections are able to transfer the horizontal inertial loads and to accommodate deformations arising from seismic displacement compatibility. The relative rotation between the end of the roof elements and the beam, owing to seismic displacement demand, could lead to their contact. This leads to a load increase in rigid connections, which can cause their premature failure, or to horizontal relative displacements as in the ductile connections considered herein. Moreover, the connections investigated could be used to dissipate seismic energy.
机译：预制钢筋混凝土建筑物的地震脆弱性通常取决于预制构件之间的机械连接性能。在意大利，最近发生的地震事件突出表明了这一方面，在那里，有几次倒塌被记录在意大利典型的工业建筑中。建筑物损坏与梁与柱之间以及梁与屋顶构件之间的连接失败有关，这导致结构构件失去支撑。从一项实验的结果开始，目前的工作研究了预制梁和屋顶构件之间的延性连接的使用，这些构件既适合于新结构，又可以作为对现有结构的改造措施。这些连接能够传递水平惯性载荷，并适应因地震位移兼容性而引起的变形。由于地震位移的需求，屋顶元件的端部与梁之间的相对旋转可能导致它们的接触。这导致刚性连接的负载增加，这可能导致其过早损坏，或者导致水平相对位移，如此处考虑的可延展连接一样。此外，所研究的连接可以用来消散地震能量。

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  • 来源
    《Magazine of Concrete Research》 |2014年第12期|553-562|共10页
  • 作者

    Andrea Belleri; Mauro Torquati; Paolo Riva;

  • 作者单位

    Department of Engineering, University of Bergamo, Italy;

    Department of Engineering, University of Bergamo, Italy;

    Department of Engineering, University of Bergamo, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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