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Calibration of Resistance Factor for Self-Tapping Screws in Canada
| 题名： | Calibration of Resistance Factor for Self-Tapping Screws in Canada |
| 正文语种： | eng |
| 作者： | Joyce, T.;Chui, Y. H. |
| 作者单位： | Univ Alberta Donadeo Innovat Ctr Engn Dept Civil & Environm Engn Edmonton AB T6G 1H9 Canada;Univ Alberta Donadeo Innovat Ctr Engn Dept Civil & Environm Engn Engn Wood & Bldg Syst Edmonton AB T6G 1H9 Canada |
| 关键词： | Timber connections;Self-tapping screws;Code calibration |
| 摘要： | Under the load and resistance factor design philosophy used in North America, building codes structures are designed using load and resistance factors calibrated to a target reliability level. Despite this, few attempts have been made to calibrate resistance factors for timber connections. A calibration process was carried out for the withdrawal resistance of axially loaded self-tapping screws using a database of test results from across Canada. Two load cases were considered, reflecting load combinations and statistics drawn from the 2015 National Building Code of Canada and from a proposal developed to provide greater consistency in reliability outcomes, and the reliability under each case was determined using the first-order reliability method (FORM). Given the low ductility-brittle nature of withdrawal failures, a resistance factor of phi = 0.7 was recommended for a target reliability index of beta = 4.0. The outcomes will assist in the selection of a resistance factor for self-tapping screws for use in the Canadian timber design standard, CSA 086. (C) 2022 American Society of Civil Engineers. |
| 出版年： | 2022 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 148 |
| 期： | 3 |
| 页码： | 04022001.1-04022001.7 |
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