ChinaForestProductsIndustry林产工业，2023，60（04）：25-32广东省4个竹种物理力学性能研究黄俊杰谭敬尹胡传双涂登云宋杰*程奥凯（华南农业大学材料与能源学院，广东广州510642）摘要：以麻竹、毛竹、小叶龙竹和粉单竹为研究对象，考察了竹龄（1～6年生）对竹材物理性质和力学性能的影响规律，并探究了竹材的结构构造，以期为广东省原竹的合理采伐和加工利用提供依据。研究结果表明：随着竹龄的增大，竹材的密度、顺纹抗压性能、顺纹抗弯性能、抗冲击性能和径向环刚度均呈先上升后下降的趋势，然而干缩率变化并不明显。4个竹种中，有竹节的麻竹拥有优异的环刚度性能；毛竹拥有优异的顺纹抗压强度和横纹抗压强度；小叶龙竹拥有优异的顺纹抗压弹性模量和抗冲击性能；粉单竹拥有优异的顺纹抗弯性能。4～6年生小叶龙竹的节间长度虽短，但其直径、壁厚和径厚比略显优势，且其纤维体积分数呈明显的径向梯度分布。关键词：麻竹；毛竹；小叶龙竹；粉单竹；结构构造；物理性质；力学性能；竹龄中图分类号：TS6文献标识码：A文章编号：1001-5299（2023）04-0025-08DOI:10.19531/j.issn1001-5299.202304005ResearchonthePhysico-MechanicalPropertiesofFourBambooSpeciesinGuangdongProvinceHUANGJun-jieTANJing-yinHUChuan-shuangTUDeng-yunSONGJieCHENGAo-kai(CollegeofMaterialsandEnergy,SouthChinaAgriculturalUniversity,Guangzhou510642,Guangdong,P.R.China)Abstract:Thisarticleinvestigatedtheeffectsofbambooage(1～6yearsold)onthephysico-mechanicalpropertiesofDendrocalamusLatiflorus,Phyllostachyspubescens,DendrocalamusbarbatusandBambusachungii.Meanwhile,thestructuralfeaturesofbambootimberwerealsostudiedinordertoprovideabasisfortherationalharvestingandprocessingofrawbambooinGuangdongProvince.Theresultsshowedthatthedensity,parallel-to-graincompressiveresistance,parallel-to-grainflexuralresistance,impacttoughnessandradialringstiffnessalltendedtoincreaseandthendecreasewithincreasingage,butthedryshrinkagedidnotchangesignificantly.Amongthefourspecies,DendrocalamusLatiflorushadexcellentringstiffnessproperties;Phyllostachyspubescenshadexcellentparallel-to-graincompressivestrength,perpendicular-to-graincompressivestrength,andparallel-to-graincompressivestrengthofroundbamboo;Dendroc...
