CAJ | 학술논문

对江汉平原人工林落羽杉物理力学性能进行了研究,结果表明：落羽杉的气干密度为0.413 g/cm3,气干密度等级为轻;综合强度为74 MPa,强度等级为Ⅰ级;径向横纹抗压强度略大于弦向横纹抗压强度;端面硬度最高,弦面硬度与径面硬度差别不大。落羽杉南北面近树皮处木材的密度、抗弯强度、弹性模量、顺纹抗压强度均大于近髓心处,南北方向对落羽杉的密度、顺纹抗压强度在5%水平上差异均不显著,而对其抗弯强度、弹性模量在1%水平上差异显著。
대강한평원인공림락우삼물리역학성능진행료연구,결과표명：락우삼적기간밀도위0.413 g/cm3,기간밀도등급위경;종합강도위74 MPa,강도등급위Ⅰ급;경향횡문항압강도략대우현향횡문항압강도;단면경도최고,현면경도여경면경도차별불대。락우삼남북면근수피처목재적밀도、항만강도、탄성모량、순문항압강도균대우근수심처,남북방향대락우삼적밀도、순문항압강도재5%수평상차이균불현저,이대기항만강도、탄성모량재1%수평상차이현저。
The physical and mechanical properties of Taxodium distichum in Jianghan plain were studied.The results were as follows.The density of Taxodium distichum was 0.413 g/cm3,and its density grade was low in terms of the wood physic-mechanical classifying criteria.Its integrated MOR(modulus of rupture) was 74MPa,which was very low in terms of the wood physic-mechanical classifying criteria.Its radial compression strength perpendicular to grain of wood was bigger than that of tangential direction,which was strongly related to its structure.The transverse hardness was the highest,while radial hardness was nearly the same with tangential hardness.Outer wood had higher properties than core wood.In addition,Variance analysis of physical and mechanical properties affected by direction was researched.The density and compression strength parallel to grain had no statistically significant difference(at 5% level) between north and south directions,while MOR and MOE had significant difference(at 1% level).