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| 題 名 | 省產柳杉材之刺鐵板接合研究 |
|---|---|
| 作 者 | 葉民權; 謝俊雄; | 書刊名 | 林產工業 |
| 卷 期 | 14:1 1995.03[民84.03] |
| 頁 次 | 頁13-36 |
| 分類號 | 436.187 |
| 關鍵詞 | 刺鐵板; 接合強度; 柳杉; Metal plate; Joint connection strength; Cryptmeria lumber; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本研究探討以2 X 4製材規格之柳杉材並設計國外生產木析架常用之刺鐵板組合後評估其接合位置之引張荷重能力。所設計之刺鐵板厚度為0.8 mm及1.0 mm,其齒長度有9 mm及12 mm兩種,並依齒密度可區分為每平方吋3齒、4齒、6齒及8齒等試驗條件。接合方式依受力方向可區分為平行木理及垂直木理兩種。柳杉木材接合位置之引張抵抗行為深受木材木理走向、刺鐵板之齒密度和齒長度以及刺鐵板厚度之相互影響而有不同的接合效果。整體而言接合引張荷重能力隨著齒密度之增加而提高,而每齒平均荷重值及接合位置之引張滑動量則有降低之趨勢。刺鐵板齒長對接合的引張抵抗的影響中在低齒密度時最具改善效果。刺鐵板厚度對引張抵抗的影響視齒長及齒密度而有不同且改善效果較小。柳衫木材平行木理之接合能力頗受刺鐵板的各項設計因子影響,而對垂直木理之接合能力而言所能改善之效果則較平行木理者小。另外除了按合破壞部位的齒數較少及易于沿年輪環裂以外,垂直木理之接合能力較弱的原因是由於齒之正面是與外力平行導致藺側面容易破壞木材。至於在最大荷重時之滑動量則是平行木理按合部位大于垂直木理之接合部位。 |
| 英文摘要 | The joint performance of domestic 2x4 Cryptomeria lumber fabricated with metal plate is investigated under tensile loads in the study. The thickness of designed metal plate are 0.8 and 1.0 mm, the length of teeth are 9 and 12 mm, and the distribution of teeth are 3, 4, 6, and 8 teeth per square inches, respectiveIy. The Iumber connected at the joints are divided into two groups according to the direction parallel or perpendicular to the wood grain. The results shows the tension resistance performance of joint is affected by the interaction of wood grain orientation, thickness of metal plate , the length and density of teeth. In general, the loading capacity can be improved by increasing the density of teeth, on the other hand, the averaged loads capacity per tooth and the amount of slip at the joint is decreased. Higher tension resistance of long teeth can be found with low teeth density of metal plate. While the influence of the thickness of metal plate on tension resistance at the joint is dependent on the length and density of teeth, and not as effective as the other factors considered. The tension performance of joint for the lumber fabricated parallel to the direction of grain is better than that of perpendicular to the direction of grain, and also shows highly influenced by the metal plate specifications. However, the amount of slip at maximum loads for the lumber fabricated parallel to the direction pf grain is larger than that of perpendicular to the direction of grain. |
本系統中英文摘要資訊取自各篇刊載內容。