测定了不同地位级不同竹龄红壳竹竹材的物理力学性质。结果表明 :不同地位级红壳竹竹材的基本密度和力学性质都随竹龄的增大而提高 ;径向、弦向和体积全干缩率随竹龄增大而减少 ;地位级Ⅱ的竹材的基本密度和力学性质高于地位级Ⅰ ,径向、弦向和体积全干缩率小于地位级Ⅰ ;不同地位级的竹材基本密度、顺纹抗压强度、顺纹抗拉强度和弦向抗弯强度有显著差异 ,而径向抗弯强度无显著差异。表 4参 6 The physical and mechanical properties of bamboo with different ages and different ages were determined. The results showed that the basic density and mechanical properties of bamboo with different positions increased with the increase of bamboo age. The radial shrinkage, chordwise and volumetric shrinkage decreased with the increase of bamboo age. The basic density and mechanical properties are higher than those in status Ⅰ. The radial shrinkage, chordwise and volumetric shrinkage rates are less than those in status Ⅰ. The basic density, compressive strength, parallel tensile strength and chord resistance Bending strength is significantly different, but no significant difference in radial bending strength. Table 4 reference 6