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首页> 外文期刊>Advances in civil engineering >Static Behavior of a Modified Through-Core Connection between CFST Column and Composite Beam
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Static Behavior of a Modified Through-Core Connection between CFST Column and Composite Beam

机译：CFST柱与复合梁之间修改的通芯连接的静态行为

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摘要

Through-core connection has been proven to be an ideal solution to ensure a rigid connection between steel beams and CFST columns. However, the traditional through-core connection sometimes encounters concrete filling problems. A modified through-core connection design with details of reduced flange width was therefore proposed. Through-core reinforcements were added as supplements for tension load transfer. The monotonic loading tests and comprehensive FE simulations were performed to investigate the load bearing performance and working mechanism of this modified connection. The results indicated that the modified through-core connection presented plasticity hinge failure at the beam end and crack formulation and progradation at the RC slab. The reduced flange width reduced the strength of the connection, but the reduction extent was limited. Due to the through-core construction, the majority of internal forces at the beam were directly transferred into the column. The through-core reinforcement can effectively participate in load bearing after the connection yields. The flange width reduction extent and the length of the reduction region must be controlled to ensure sufficient connection strength. The number of shear studs and TC reinforcements can influence the load bearing ability, and design suggestions are provided for the modified through-core connection.
机译：已被证明是一种理想的解决方案，以确保钢梁和CFST柱之间的刚性连接。然而，传统的通芯连接有时会遇到混凝土填充问题。因此提出了一种改进的贯通芯连接设计，具有减小的凸缘宽度的细节。作为张力负荷转移的补充剂加入了贯穿核心增强剂。进行单调负载测试和综合的FE模拟，研究了这种改进的连接的承载性能和工作机制。结果表明，改进的贯通芯连接在梁末端呈现可塑性铰链故障，并在RC板上裂缝配方和促进。凸缘宽度降低降低了连接的强度，但减少范围是有限的。由于贯穿核心结构，梁上的大部分内部力直接转移到柱中。通过芯钢筋可以有效地在连接产率后参与承重。必须控制法兰宽度减小范围和还原区域的长度以确保足够的连接强度。剪切螺柱和TC增强件的数量可以影响承重能力，并且为改进的通芯连接提供了设计建议。

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  • 来源
    《Advances in civil engineering》 |2019年第16期|8314543.1-8314543.18|共18页
  • 作者

    Zhou Qi-shi; Fu Hua-wei; Zhou Xu-hong; Yu Yu-jie; Wang Qian-ren;

  • 作者单位

    Cent South Univ Sch Civil Engn Changsha 410075 Hunan Peoples R China;

    Cent South Univ Sch Civil Engn Changsha 410075 Hunan Peoples R China;

    Chongqing Univ Sch Civil Engn Chongqing 400045 Peoples R China;

    Cent South Univ Sch Civil Engn Changsha 410075 Hunan Peoples R China;

    Cent South Univ Sch Civil Engn Changsha 410075 Hunan Peoples R China;

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