中山杉与落羽杉木材物理力学性质比较研究  

Physical and Mechanical Properties of Taxodium 'zhongshansha 302' and Taxodium distichum Wood

作　　者：赵荣军[1] 费本华[1] 虞华强[1] 刘君良[1] 

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091

出　　处：《东北林业大学学报》2007年第2期4-6,共3页Journal of Northeast Forestry University

基　　金：国家林业局中试推广项目[2002]林科中字15号资助

摘　　要：对中山杉302和落羽杉两种木材的部分物理力学性质进行了测试比较分析。结果表明:中山杉302木材的基本密度、气干密度、抗弯强度、抗弯弹性模量和顺纹抗压强度的平均值均比落羽杉高,而弦向全干干缩率、体积全干干缩率、弦向气干干缩率、体积气干干缩率均比落羽杉低;其差异都在0.05水平显著。中山杉与落羽杉树干上段(3.3～5.3m)木材的基本密度、气干密度、抗弯强度和抗弯弹性模量均低于下段(1.3～3.3m);两种木材的气干密度与弦向气干干缩率、体积气干干缩率呈显著的正相关,与抗弯强度、顺纹抗压强度呈正相关,与抗弯弹性模量呈负相关。The physical and mechanical properties of Taxodium‘zhongshansha 302＇ and Taxodium distichum were studied. Results show that the basic density, air-dry density, bending strength, modulus of elasticity, and compressive strength parallel to grain of T. ‘zhongshansha 302＇ are higher than those of T. distichum, and the oven-dry shrinkage and the air-dry shrinkage in tangential and volume are lower than those of Taxodium distichum, and the differences are all prominent at the 0.05 level. The basic density, air-dry density, bending strength and modulus of elasticity of the two species of wood from the lower part of trunk are lower. A significantly positive correlation was found between air-dry density and air-dry shrinkage in tangential and volume, and air-dry density is also positively correlated with bending strength and compressive strength parallel to grain, and is negatively correlated with modulus of elasticity. 　

关 键 词：中山杉 落羽杉 密度 干缩 强度 

分 类 号：S781[农业科学—木材科学与技术]