貫穿方榫木楔榫接結構結強度之分析研究
No Thumbnail Available
Date
2003
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
本研究旨在探討木材硬度、木楔鋸切細縫距離與木楔嵌入深度對貫穿方榫木楔榫接結構強度是
否具有差異，並探討兩者間之相關性。方榫是強度極大的結構榫接方式，以木楔嵌接方榫可以加強榫接強度。榫接設計的適當與否對於傢俱結構有很大的影響。最後，本研究以統計方法進行分析歸納。經研究結果摘述如下：
一、嵌入深度20mm鋸切細縫距離7mm之試件組, 其引拔強度平均值為1552.5765kgf，為四組中最大的一組。
二、嵌入深度10mm鋸切細縫距離14mm之試件組, 其引拔強度平均值為1012.5000kgf，為四組中最小的一組。
三、嵌入深度之試件與引拔強度呈現顯著差異，t值為-4.243。嵌入深度20mm試件之引拔強度大於深度為10mm試件之引拔強度。
四、鋸切細縫距離之試件與引拔強度呈顯著差異，其t值為4.547。鋸切細縫距離7mm試件之引拔強度大於鋸切細縫距離14mm試件之引拔強度。
五、嵌入深度x1、鋸切細縫距離為x2及材料硬度x3與榫接之引拔強度均呈顯著相關。
其引拔強度（WS）原始分數迴歸方程式為：
(ws)= 2600.769 x1+21.033 x2－30.819 x3－2377.318(kgf).
標準化迴歸方程式為：
(ws)= .383Zx1+.533Zx2－.547Zx3
The purpose of this research is to study the difference of the structural strength of wedges with through tenons joints between the hardness of wood and the depth of inserted wedges of tenons and the distance of seams, and to study the correlation among them. Square tenons are strong joints for wood structures, and using wedges with tenons can increase the strength of wood structures. The strength of furniture will to a large extent depend on the design of tenons. This study will analyze all data by statistical analysis. And the conclusions reached by this study are: 1. the average load of withdrawal strength of the wood of the depth of 20mm inserted wedge of tenons and the 7mm distance of seams is 1552.57kgf, which is the strongest of the four experiment materials. 2. the average load of withdrawal strength of the wood of the depth of 10mm inserted wedge of tenons and the 14mm distance of seams is 1012.50kgf, which is the weakest of the four experiment materials. 3. There is significant discrepancy between the depth of inserted wedges of tenons and withdrawal strength t=-4.243. the strength of the depth of 20mm inserted wedges of tenons is larger than the strength of the depth of 10mm inserted wedges of tenons. 4. There is significant discrepancy between the distance of seams and withdrawal strength t=4.547. the strength of the distance of 7mm seams is larger than the strength of the distance of 14mm seam. 5. There is significant correlation between the depth of inserted wedge x1, the distance of seams x2, and the hardness of wood x3, and the withdrawal strength, the raw score regression formula is (ws)= 2600.769 x1+21.033 x2－30.819 x3－2377.318(kgf). The regression formula of the standard score is (ws)= .383Zx1+.533Zx2－.547Zx3
The purpose of this research is to study the difference of the structural strength of wedges with through tenons joints between the hardness of wood and the depth of inserted wedges of tenons and the distance of seams, and to study the correlation among them. Square tenons are strong joints for wood structures, and using wedges with tenons can increase the strength of wood structures. The strength of furniture will to a large extent depend on the design of tenons. This study will analyze all data by statistical analysis. And the conclusions reached by this study are: 1. the average load of withdrawal strength of the wood of the depth of 20mm inserted wedge of tenons and the 7mm distance of seams is 1552.57kgf, which is the strongest of the four experiment materials. 2. the average load of withdrawal strength of the wood of the depth of 10mm inserted wedge of tenons and the 14mm distance of seams is 1012.50kgf, which is the weakest of the four experiment materials. 3. There is significant discrepancy between the depth of inserted wedges of tenons and withdrawal strength t=-4.243. the strength of the depth of 20mm inserted wedges of tenons is larger than the strength of the depth of 10mm inserted wedges of tenons. 4. There is significant discrepancy between the distance of seams and withdrawal strength t=4.547. the strength of the distance of 7mm seams is larger than the strength of the distance of 14mm seam. 5. There is significant correlation between the depth of inserted wedge x1, the distance of seams x2, and the hardness of wood x3, and the withdrawal strength, the raw score regression formula is (ws)= 2600.769 x1+21.033 x2－30.819 x3－2377.318(kgf). The regression formula of the standard score is (ws)= .383Zx1+.533Zx2－.547Zx3
Description
Keywords
傢俱, 木工, 榫頭, 方榫, 木楔, furniture, woodworking, tenon, square tenon, wedge