指榫参数和端压压力对橡胶木指接材抗弯性能的影响  

Effect of Tenon Parameters and End Pressure on the Flexural Performance of Rubberwood Finger Joints

作　　者：贾晓娟 黄素涌[1] 王建和 缪本浩 龚蒙 肖岩 卫佩行[4] 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)

机构地区：[1]西南林业大学材料与化学工程学院,云南昆明650224 [2]宁波中加低碳新技术研究院有限公司,浙江宁波315600 [3]浙江大学(宁海)生物质材料与碳中和建设联合研究中心,浙江宁波315600 [4]江苏农林职业技术学院,江苏句容212400

出　　处：《林产工业》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)。

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.

关 键 词：指接 指榫类型 抗弯强度 端部压力 齿长 

分 类 号：TS664.01[轻工技术与工程] TS396