齿榫类型及参数对指接竹规格材性能的影响  

Effects of Toothed Tenon Types and Parameters on Properties of Finger-Jointed Dimensional Bamboo Lumber

作　　者：刘焕荣 杨晓梦 苏勤 黄爱月 费本华 张秀标 LIU Huan-rong;YANG Xiao-meng;SU Qin;HUANG Ai-yue;FEI Ben-hua;ZHANG Xiu-biao(International Centre for Bamboo and Rattan,Key Laboratory of Bamboo and Rattan Science and Technology,National Forestry and Grassland Administration(NFGA),Beijing 100102,China;Ningbo University,Ningbo 315211 Zhejiang,China)

机构地区：[1]国际竹藤中心,国家林草局竹藤科学重点实验室,北京100102 [2]宁波大学,浙江宁波315211

出　　处：《木材科学与技术》2021年第1期47-52,共6页Chinese Journal of Wood Science and Technology

基　　金：国家重点研发计划课题“竹质家具用材连续化成套制造技术集成示范”(2016YFD0600905)。

摘　　要：以竹规格材为研究对象,分别探讨指榫类型(垂直型和水平型)、齿榫参数(Ⅰ、Ⅱ、Ⅲ型齿榫)和嵌合度(0、0.1、0.3 mm)等参数对指接竹规格材性能的影响,结果显示垂直型指榫指接竹规格材的力学性能优于水平型指榫;当嵌合度为0.1 mm,采用垂直Ⅱ型齿榫指接竹规格材的性能最优,与未指接竹规格材相比,指接竹规格材较好地保持了竹材的抗弯和抗拉性能,其抗弯性能和抗拉强度分别满足GB/T 26899—2011《结构用集成材》中机械分等层板力学性能ME16级和最高级ME18的要求,具备作为结构材的潜力。In the present study, effects of finger joint parameters including finger types, finger tenon parameters(type Ⅰ, Ⅱ, and Ⅲ), and fitness ratios on the performance of finger-jointed dimensional bamboo lumber were explored respectively. Results indicated that the mechanical properties of finger-jointed dimensional bamboo lumber in the verticality(V) finger tenon were better than that with the horizontal(H)tenon. In the V finger tenon, type Ⅱ with 0.1 mm fitness ratio was the best finger joint parameter for dimensional bamboo lumber. Compared with the performance of non-finger-jointed dimensional bamboo lumber, bending and tensile properties of finger-jointed dimensional bamboo lumber performed well, which met the physical property requirements of machine-graded panels of M_E16 grade and the highest grade of M_E18 in GB/T 26899-2011. In conclusion, finger-jointed dimensional bamboo lumber has a good application potential in structural materials.

关 键 词：竹展平板 指榫类型 齿榫参数 竹规格材 指接 力学性能 

分 类 号：TS653[轻工技术与工程] S795.9[农业科学—林木遗传育种]