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首页> 外文期刊>Journal of structural engineering >Behavior of Steel Moment Frames Using Top-and-Seat Angle Connections under Various Column-Removal Scenarios
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Behavior of Steel Moment Frames Using Top-and-Seat Angle Connections under Various Column-Removal Scenarios

机译：在各种列移除场景下使用顶部和座椅角度连接的钢时刻框架的行为

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摘要

Top-and-seat angle connections are a conventional type of steel moment connection. However, their capacity in accommodating columns loss is rarely studied. In this study, five multistory steel moment subframes using top-and-seat angle connections were fabricated and tested to investigate their performance while subjected to various column-removal scenarios, including: (1) a middle column loss, (2) a penultimate column loss, and (3) a corner column loss. Moreover, the effects of the thickness of steel angle on load resistance were quantified. The test results indicated that load-resisting capacity increased significantly with the increase of angle thickness. In both middle column and penultimate column removal scenarios, catenary action was developed in the frames. It was also noticed that flexural action dominated the load-resisting mechanism of the frames under a corner column loss scenario. For beams in different stories, similar flexural resistance was developed. However, the beams in the first story were able to develop larger catenary action than that in the second story. It is worth noting that, for a corner column missing scenario, Vierendeel action helps to enhance the flexural action significantly.
机译：顶部和座椅角度连接是传统类型的钢矩连接。然而，它们在容纳柱损失的能力很少进行。在这项研究中，制造和测试了五个使用顶部和座椅角度连接的多晶钢时刻子帧，以研究它们的性能，同时进行各种列移除场景，包括：（1）中间列丢失，（2）倒数第二栏损失，（3）角柱损失。此外，量化了钢角度厚度对负载性的影响。测试结果表明，随着角度厚度的增加，负载能力显着增加。在中间列和倒数第二栏删除方案中，在框架中开发了追逐行动。还注意到弯曲动作在角柱损失场景下占据了框架的抗衡机构。对于不同故事中的光束，显影了类似的抗弯曲性。然而，第一个故事中的光束能够发展比第二个故事更大的围绕动作。值得注意的是，对于角落列缺少的场景，Vierendeel动作有助于提高弯曲动作。

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  • 来源
    《Journal of structural engineering》 |2021年第10期|04021144.1-04021144.20|共20页
  • 作者

    Qian Kai; Lan Xi; Li Zhi; Fu Feng;

  • 作者单位

    Guilin Univ Technol Coll Civil Engn & Architecture Guilin 541004 Peoples R China;

    Guilin Univ Technol Coll Civil Engn & Architecture Guilin 541004 Peoples R China;

    Guilin Univ Technol Coll Civil Engn & Architecture Guilin 541004 Peoples R China;

    Univ London Sch Math Comp Sci & Engn Struct Engn London EC1V 0HB England;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Experimental; Analytical; Progressive collapse; Steel; Moment frame;

    机译：实验;分析;逐步崩溃;钢;时刻框架;

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