摘要
以橡胶木规格锯材为研究对象,探讨了指榫参数(齿长S型12.5 mm和L型25.0 mm)和端压压力(1.50、1.85、2.20 MPa)对指接橡胶木规格锯材抗弯性能的影响。结果表明:S型齿橡胶木指接材的抗弯强度(MOR)(平均值49.5 MPa)明显高于L型齿橡胶木指接材的MOR(平均值45.3 MPa),证明使用短齿指接是可行的;齿长对抗弯弹性模量(MOE)无显著影响,但对MOR影响显著;根据不同齿型的端压趋势图情况,可推断L型齿橡胶木指接材的较优端压压力为2.20 MPa,S型齿橡胶木指接材较优端压压力为1.85 MPa。
The effects of finger-joint parameters(S-type 12.5 mm and L-type 25.0 mm finger-joint length)and end pressure(1.50,1.85,2.20 MPa)on the flexural properties of finger jointed rubber-wood specification sawn timber were investigated.The results show that the bending strength(MOR)of S-shaped rubber wood finger joint(mean 49.5 MPa)is significantly higher than that of L-shaped rubber wood finger joint(mean 45.3 MPa),which proves that the use of short finger-joint is feasible.Finger-joint length has no significant effect on flexural modulus(MOE),but has significant effect on MOR.According to the end pressure trend diagram of different finger-joint shapes,it can be inferred that the optimal end pressure of L-shaped rubber wood finger joints is 2.20 MPa,and that of S-shaped rubber wood finger joints is 1.85 MPa.
作者
贾晓娟
黄素涌
王建和
缪本浩
龚蒙
肖岩
卫佩行
JIA Xiao-juan;HUANG Su-yong;WANG Jian-he;MIAO Ben-hao;GONG Meng;XIAO Yan;WEI Pei-xing(School of Materials and Chemical Engineering,Southwest Forestry University,Kunming 650024,Yunnan,P.R.China;Ningbo Sino-Canada Low-Carbon New Technology Research Institute Co.Ltd.,Ningbo 315600,Zhejiang,P.R.China;Zhejiang University(Ninghai)Joint Research Center for Bio-Based Materials and Carbon Neutral Development,Ningbo 315600,Zhejiang,P.R.China;School of Landscape Architecture,Jiangsu Vocational College of Agriculture and Forestry,Jurong 212400,Jiangsu,P.R.China)
出处
《林产工业》
北大核心
2024年第10期11-16,23,共7页
China Forest Products Industry
基金
云南省新型生物质预制建材研发创新团队(202105ZA160002)。
关键词
指接
指榫类型
抗弯强度
端部压力
齿长
Finger joint
Finger tenon type
Bending resistance
End pressure
Finger-joint length
