原文传递
Effect of Unloading and Reloading on Bearing Strength of Unconfined Cold-Formed Steel Bolted Connections
| 题名： | Effect of Unloading and Reloading on Bearing Strength of Unconfined Cold-Formed Steel Bolted Connections |
| 正文语种： | eng |
| 作者： | Bhuiyan, Refat A.;Ahmed, Aziz;McCarthy, Timothy J. |
| 作者单位： | Univ Wollongong Sch Civil Min & Environm Engn Australian Res Council Res Hub Australian Steel M Wollongong NSW 2522 Australia;Univ Wollongong Sch Civil Min & Environm Engn Australian Res Council Res Hub Australian Steel M Wollongong NSW 2522 Australia;Univ Wollongong Sch Civil Min & Environm Engn Australian Res Council Res Hub Australian Steel M Wollongong NSW 2522 Australia |
| 关键词： | Bolted connections;Bearing strength;Cold-formed steel;Single unloading cycle;Unconfined bolted connections |
| 摘要： | This data paper presents the experimental investigation of unconfined cold-formed steel double-shear bolted connections where the applied load was stopped at different stages of loading (25% or 65% of the ultimate failure load under monotonic loading) followed by unloading, and finally reloading until failure. A total of 78 bolted connections of cold-formed steel subjected to loading-unloading and reloading conditions with sheet thicknesses ranging from 0.55 to 3.0 mm, bolted with 10, 12, or 16-mm bolts were investigated and compared to the identical specimens subjected to monotonic loading. The failure mode of the specimens tested under both loading conditions was bearing of the inner sheet. The test results show that ultimate capacities obtained from unloading and reloading tests were, on average, lower than those obtained from the monotonic tests. A similar trend was also observed for the displacement corresponding to the ultimate loads. However, the effects of sheet thickness and bolt diameter were found to be less critical. This study establishes a publicly available database of control cases to build the foundation for further study into similar loading regimes. This paper also alludes to several potential use cases for the available data. (C) 2021 American Society of Civil Engineers. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 5 |
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