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

Huan-rong LIU; Xiao-meng YANG; Qin SU; Ai-yue HUANG; Ben-hua FEI; Xiu-biao ZHANG

doi:10.12326/j.2096-9694.2020074

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Effects of Toothed Tenon Types and Parameters on Properties of Finger-Jointed Dimensional Bamboo Lumber
1.International Centre for Bamboo and Rattan，Key Laboratory of Bamboo and Rattan Science and Technology， National Forestry and Grassland Administration （NFGA），Beijing 100102，China
2.Ningbo University，Ningbo， 315211 Zhejiang，China
Vol. 35, Issue 1, Pages: 47-52(2021)
DOI： 10.12326/j.2096-9694.2020074

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刘焕荣,杨晓梦,苏勤等.齿榫类型及参数对指接竹规格材性能的影响[J].木材科学与技术,2021,35(01):47-52.

LIU Huan-rong,YANG Xiao-meng,SU Qin,et al.Effects of Toothed Tenon Types and Parameters on Properties of Finger-Jointed Dimensional Bamboo Lumber[J].Chinese Journal of Wood Science and Technology,2021,35(01):47-52.
刘焕荣,杨晓梦,苏勤等.齿榫类型及参数对指接竹规格材性能的影响[J].木材科学与技术,2021,35(01):47-52. DOI： 10.12326/j.2096-9694.2020074.

LIU Huan-rong,YANG Xiao-meng,SU Qin,et al.Effects of Toothed Tenon Types and Parameters on Properties of Finger-Jointed Dimensional Bamboo Lumber[J].Chinese Journal of Wood Science and Technology,2021,35(01):47-52. DOI： 10.12326/j.2096-9694.2020074.

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M,E,16级和最高级M,E,18的要求，具备作为结构材的潜力。

Abstract

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,E,16 grade and the highest grade of M,E,18 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

Keywords

bamboo flattened sheetfinger joint typestoothed tenon parametersdimensional bamboo lumberfinger-jointmechanical properties

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