CAJ | 학술논문

以兴安落叶松成熟材指接材为研究对象，以早晚材为基础单元，木材密度为影响木材力学变异性的主要因素，建立并验证成熟材无缺陷指接材顺纹抗拉最大破坏载荷力学模型。模型验证结果表明：利用该模型能够准确求解齿长为27．5 mm、齿底为7．5 mm、齿顶为2．25 mm、齿斜面与齿底夹角为95°，且具有3个胶合面的兴安落叶松成熟材无缺陷指接材顺纹抗拉破坏载荷；但该模型不适用于预测幼龄材，对其指接材顺纹抗拉破坏载荷计算偏差较大。为推广该模型，需补充与兴安落叶松幼龄材相关的模型参数，并需进一步对不同齿形参数的指接材进行验证。
이흥안락협송성숙재지접재위연구대상，이조만재위기출단원，목재밀도위영향목재역학변이성적주요인소，건립병험증성숙재무결함지접재순문항랍최대파배재하역학모형。모형험증결과표명：이용해모형능구준학구해치장위27．5 mm、치저위7．5 mm、치정위2．25 mm、치사면여치저협각위95°，차구유3개효합면적흥안락협송성숙재무결함지접재순문항랍파배재하；단해모형불괄용우예측유령재，대기지접재순문항랍파배재하계산편차교대。위추엄해모형，수보충여흥안락협송유령재상관적모형삼수，병수진일보대불동치형삼수적지접재진행험증。
To establish and verify the longitudinal tensile failure load ( LTF) mechanical model of Larix gmelinii mature finger-jointed wood, the properties of earlywood( EW) and latewood( LW) were involved. In addition, it considered den-sity as the major factor influencing Larix gmelinii mature wood mechanical properties. The verification results of the model showed that it was possible to build mechanical model of LTF based on different properties of EW and LW. The model of finger-jointed LTF was suitable for Larix gmelinii mature wood, which was verified by the specimen with the node geometric parameters including 27.5 mm of the length, 7.5 mm of the bottom, 2.25 mm of the top, and the angle of 95° between slope and bottom. However, it couldn?t predict the LTF of Larix gmelinii juvenile wood. In order to promote the model, it required more verification of various finger-joint figures.