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Effect of Concrete Infill and Slenderness on Column-Face Component in Anchored Blind-Bolt Connections
| 题名： | Effect of Concrete Infill and Slenderness on Column-Face Component in Anchored Blind-Bolt Connections |
| 正文语种： | 英文 |
| 作者： | Walid Tizani; Mohammed Mahmood;Dionysios Bournas |
| 作者单位： | Univ, of Nottingham;Univ, of Diyala;European Commission, Joint Research Centre |
| 关键词： | Anchored bolted connection; Column-face bending; Concrete strength; Concrete-filled tubular columns |
| 摘要： | Previous research on blind-bolted connections to hollow columns have provided a wealth of experimental data but little infor-mation on parametric analytical models to guide their design. One of the connection components that requires further understanding is the column-face bending. This paper presents the results and evaluation of experimental tests and finite element analyses for the bending behavior of the column-face component. Tests were conducted on full-scale connections to investigate the effect of concrete type and strength on the component. The results demonstrated that concrete strength has a direct influence on component strength and stiffness. The increase in concrete strength correlated with a significant increase in component strength. The increase in component stiffness was less significant, and is found to be limited by the column slenderness ratio (width/thickness). Slenderness ratio limits were defined beyond which the increase in concrete strength has no effect on component stiffness. A formula for evaluating the confinement effect on the concrete infill is proposed. The strength and stiffness of the component were not affected when using self-compacting concrete, but the use of lightweight concrete reduced both strength and stiffness. The failure mode of the component is bolt anchorage failure followed by a complete yielding of the column face plate around the bolts. |
| 出版日期： | 2020 |
| 出版年： | 2020 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.146 |
| 期： | No.04 |
| 页码： | 04020041 |
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