分体椭圆榫结构强度优化研究

Study on Strength Optimization of Loose-Tenon and Mortise Structure

从生产效率、材料利用率和结构强度3个方面对分体椭圆榫和整体椭圆榫进行对比分析,深入探究了竖直构件榫头插入深度和榫头材料对分体榫结构抗拔强度和抗弯强度的影响。结果表明整体榫的榫抗拔强度和抗弯强度比分体榫分别高44.6%、17.2%,分体椭圆榫加工效率和材料利用率优于整体椭圆榫,并且分体榫更容易实现标准化生产。分体榫竖直构件插入深度为30mm时,抗拔强度和抗弯强度最优;榫头材料为松木时,抗拔强度和抗弯强度最差;榫头材料为水曲柳时,抗拔强度和抗弯强度最佳。当分体榫竖直构件插入深度为30 mm,榫头材料采用橡胶木或者水曲柳时,分体榫结构强度比整体榫结构强度好。

Comparative analysis of the mortise and loose-tenon and the mortise and tenon from aspects of production efficiency,material utilization and structural strength,and then deeply explores the influence of the insertion depth of the vertical member and tenon material on the tensile strength and bengding strength of the loose-tenon and mortise structure.The results show that the tensile strength and bengding strength of the tenon and mortise are 44.6% and 17.2% higher than loose-tenon and mortise.Loose-tenon and mortise is superior to tenon and mortise in processing efficiency and material utilization,and it is easier to achieve standardized production.When the insertion depth of the loose-tenon vertical member is 30 mm,the tensile strength and bending strength are the best;when the tenon material is pine,the tensile strength and bending strength are the worst;when the tenon material is ash,the tensile strength and bending strength are the best.When the loose-tenon vertical member is inserted to a depth of 30 mm and the tenon material is rubber wood or ash,the structural strength loose-tenon and mortise is better than the tenon and mortise.