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| 題 名 | 結構用自攻螺絲接合之集成材雙剪抵抗性能評估=Evaluation of the Performance of the Double-Shear Resistance of Glulam Connections Using Structural Self-tapping Screws |
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| 作 者 | 葉民權; 林玉麗; 宋雲煒; | 書刊名 | 臺灣林業科學 |
| 卷 期 | 33:2 2018.06[民107.06] |
| 頁 次 | 頁141-161 |
| 分類號 | 436.18 |
| 關鍵詞 | 接合; 剪斷容量; 自攻螺絲; 柳杉; Connection; Shear capacity; Self-tapping screw; Japanese cedar; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本研究採用直徑6~10 mm,長度267~302 mm之三種結構用自攻螺絲為扣件,柳杉、南方松、花旗松、冰片木四種樹種製成之異等級結構用集成材為構材,探討以扣件組合三構材在載重下雙剪接合強度性質。結果顯示冰片木集成材接合之最大剪斷容量分別優於花旗松、南方松及柳杉等集成材之接合條件19.8、54.7及48.5%。垂直木理方向之雙剪接合最大剪斷容量高於平行木理方向條件16.0%。以鋁合金連結件接合集成材條件方面,冰片木集成之雙剪最大剪斷容量分別優於花旗松、南方松及柳杉等集成材之接合條件20.1、31.8及34.3%。垂直木理方向之接合最大剪斷容量高於平行木理方向條件19.5%。以8 mm結構用自攻螺絲配合鋁合金連結件之雙剪接合最大剪斷容量則高於木—木接合條件45.5%。在不同直徑條件下以直徑8及10 mm結構用自攻螺絲接合之雙剪最大剪斷容量分別高於6 mm直徑條件46.8及92.3%。接合部位在剪斷載重下之能量散逸趨勢亦與最大剪斷容量相近。依現行木構造建築物及施工技術設計規範中有關木螺絲釘或大木螺釘的容許剪力計算,應用於結構用自攻螺絲之接合強度估算,均會有低估之趨勢。 |
| 英文摘要 | Three structural self-tapping screws with diameters of 6~10 mm and lengths of 267~302 mm were used as fasteners. Four wood species of Japanese cedar, Douglas fir, southern pine, and Kapur were used for making heterogeneous-grade structural glulam members in the study. Three glulam members were assembled with structural self-tapping screws as a joint to investigate the double-shear properties of a connection subjected to a load. Results indicated that the maximum shear capacity of a connection assembled with Kapur glulam members was 19.9, 54.7, and 48.5%, respectively, higher than those of Douglas fir, southern pine, and Japanese cedar glulam connections. The maximum shear capacity of a double-shear connection loaded perpendicular to wood grain was 16.0% higher than that loaded parallel to the wood grain. In the case of a glulam joint assembled with an aluminum connector, the maximum shear capacity of a double-shear connection assembled with Kapur glulam members was 20.1, 31.8, and 34.3%, respectively, higher than those of Douglas fir, southern pine, and Japanese cedar glulam connections. The maximum shear capacity of a double-shear connection loaded perpendicular to the wood grain was 19.5% higher than that loaded parallel to the wood grain. Further, the maximum shear capacity of a double-shear connection assembled with 8-mm structural self-tapping screws and an aluminum connector was 45.5% higher than that of a wood-wood connection. The maximum shear capacity of a double-shear connection assembled with 8- and 10-mm diameters of structural self-tapping screws were 46.8 and 92.3%, respectively, higher than those with 6-mm diameter screws. The tendency for energy dissipation of the connection subjected to a shear load was similar to that of the maximum shear capacity. The calculated results of the allowable joint strength for self-tapping screws showed a tendency of underestimation when the allowable shear calculations for both wood screws and lag screws in the wood-frame structure design code were applied. |
本系統中英文摘要資訊取自各篇刊載內容。