CAJ | 학술논문

采用多重比较方法研究了5种丛生竹材的物理力学性质及其基本密度与力学性质相关性。结果表明：5种丛生竹材3种密度变化幅度为：基本密度0．366～0．574 g/cm3、气干密度0．490～0．689 g/cm3、绝干密度0．464～0．655 g/cm3。5个竹种中，3种密度皆以硬头黄竹最大，车筒竹最小。5种丛生竹材干缩率差别较大，从大到小依次为车筒竹、龙竹、硬头黄竹、撑绿杂交竹、梁山慈竹，撑绿杂交竹和梁山慈竹二者干缩率比较接近。方差分析结果表明，密度和干缩性均因竹种不同而存在极显著差异。梁山慈竹各力学性能良好，硬头黄竹与之相当，龙竹、撑绿杂交竹和车筒竹力学性能较差。基本密度与顺纹抗压强度、抗拉强度和抗剪强度有显著的相关性。综合分析可知，梁山慈竹和硬头黄竹的密度小，干缩率小，强度、硬度与毛竹相当，韧性大于毛竹，可以作为建筑用材。
채용다중비교방법연구료5충총생죽재적물리역학성질급기기본밀도여역학성질상관성。결과표명：5충총생죽재3충밀도변화폭도위：기본밀도0．366～0．574 g/cm3、기간밀도0．490～0．689 g/cm3、절간밀도0．464～0．655 g/cm3。5개죽충중，3충밀도개이경두황죽최대，차통죽최소。5충총생죽재간축솔차별교대，종대도소의차위차통죽、룡죽、경두황죽、탱록잡교죽、량산자죽，탱록잡교죽화량산자죽이자간축솔비교접근。방차분석결과표명，밀도화간축성균인죽충불동이존재겁현저차이。량산자죽각역학성능량호，경두황죽여지상당，룡죽、탱록잡교죽화차통죽역학성능교차。기본밀도여순문항압강도、항랍강도화항전강도유현저적상관성。종합분석가지，량산자죽화경두황죽적밀도소，간축솔소，강도、경도여모죽상당，인성대우모죽，가이작위건축용재。
An experiment was conducted to study the physical-mechanical properties by multiple comparative method and dis-cussed the correlations between basic density and mechanical properties for five sympodial bamboo species, Dendrocalamus farinosus, Bambusa rigida, B.Pervair adilis× Grandsi Nin, D.giganteus and B.sinospinosa.The basic density ranges from 0.366 to 0.574 g/cm3, air-dried density is 0.490-0.689 g/cm3 and the oven-dried density is 0.464-0.655 g/cm3 for five species .The maximum of three kinds of density is in B.rigida, and the minimum is in B.sinospinosa among five species.The shrinkage rate order of five sympodial bamboo is B.sinospinosa>D.giganteus>B.rigida>B.Pervariadilis× Grandis>D.farinosus.There is significant difference between density, shrinkage rate and bamboo species.Six kinds of mechanical properties in D.farinosus are the best followed by B.rigida, but those in B.sinospinosa, D.Giganteus and B.Pervariadilis×Grandis Nin are worse.There are good correlations between basic density and tension strength, compres-sion strength and sheer strength.D.farinosus and B.rigida can be used as building materials due to their small density and shrinkage, big strength, hardness and toughness through comprehensive analysis.