原文传递
RHS-to-RHS Zero-Gap K-Connections
| 题名： | RHS-to-RHS Zero-Gap K-Connections |
| 正文语种： | eng |
| 作者： | Bu, Xiao Ding;Packer, Jeffrey A. |
| 作者单位： | Univ Toronto Dept Civil & Mineral Engn 35 St George St Toronto ON M5S 1A4 Canada;Univ Toronto Dept Civil & Mineral Engn 35 St George St Toronto ON M5S 1A4 Canada |
| 关键词： | Hollow structural sections;Rectangular hollow sections;K-connections;Zero-gap joints;Rectangular hollow section-to-rectangular hollow section (RHS-to-RHS);Experiments;Analytical models;Finite-element models;Parametric study;Design recommendations |
| 摘要： | The design of a rectangular hollow-section K-connection in which the branches are welded toe-to-toe to the chord is not permitted at present in design guides and codes. To illustrate the feasibility of such connections, two full-scale cold-formed welded rectangular hollow-section K-connection laboratory tests, including one control specimen and one zero-gap specimen, are presented. A new chord face shear analytical model based on a yield-line mechanism is proposed for such connections, and its validity was evaluated against the experiments. Nonlinear finite-element connection models were built and validated against the laboratory tests, and a numerical parametric study was performed on similar connections with a broader range of parameters. From the results of the finite-element study, an empirical connection strength model was also generated by regression curve-fitting. Based on the experimental and numerical data, the proposed chord face shear analytical model is recommended for design of rectangular hollow-section zero-gap K-connections. The gap size can also be increased up to the summation of the two branch thicknesses. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 6 |
| 页码： | 04022055.1-04022055.18 |
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