速生杨木方材榫接合力学性能提升方法研究  

Study on Mechanical Properties Enhancement Method of Mortise and Tenon Joint for Fast-Growing Poplar Softwood Square Lumber

作　　者：潘雨婷 关惠元 PAN Yuting;GUAN Huiyuan(College of Furnishings and Industrial Design,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学家居与工业设计学院,南京210037

出　　处：《家具》2022年第5期12-16,27,共6页Furniture

基　　金：江苏省高校品牌专业建设工程项目(PPZY2015B150);南京林业大学林业资源高效加工利用协同创新中心项目。

摘　　要：对速生软质木材榫接合处的力学性能提升的研究势在必行,提升其节点强度能够扩大其在家具中的应用范围,从而节约生长缓慢的优质木材资源。提出小断面零件的榫节点的预埋式增强方法,以杨木和榉木为实验对象,分别在杨木小断面T型件的横向和竖向构件中镶嵌不同尺寸的榉木进行局部补强,再加工成榫头榫眼与适配的榉木构件进行装配,并抗拔测试进行考察。结果表明:其接合处的抗拔性能增强都很明显,与未增强组相比,分别可提高32.9%和19.1%。将抗拔效果提升最明显的两组相互装配后形成的T型件比纯杨木接合点的抗拔性能可提高55.5%。最终证明此方法对于提高软木质方材榫节点的强度切实可行,并能够为速生材家具制品榫接合处力学性能的增强研究提供理论依据。It is imperative to improve the mechanical properties of fast-growing poplar mortise and tenon joint to increase their nodal strength for furniture applications and to conserve slow-growing high-quality wood resources.Taken poplar and beech wood as experimental objects,the method of pre-built reinforcement of mortise and tenon joint of small-section parts was proposed.Different sizes of beech wood were inlaid in the transverse and vertical members of small-section poplar T-pieces for local reinforcement.After being machined into mortise and tenon joint for assembly with suitable beech wood members,the anti-pull tests were conducted to investigate.The results showed that the anti-drawing strength of the mortise and tenon joint was significantly enhanced,with an increase of 32.9%and 19.1%respectively compared to the unreinforced group.The T-piece formed by assembling the two groups with the most significant increase in anti-drawing strength was 55.5%higher than that of the pure poplar joints.This method was proved to be practical for improving the strength of mortise and tenon joint of softwood square lumber and can provide a theoretical basis for enhancing the mechanical properties of mortise and tenon joint of fast-growing wood furniture products.

关 键 词：软质木材 速生木材 榫接合处 力学测试 抗拔性能 

分 类 号：TS664[轻工技术与工程]