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杉木一直是我国重要建筑用材。近年来，速生杉木在新型工程木中的应用呈现出良好发展潜力。对速生杉木锯材节子数量和尺寸进行了统计，并采用横向振动法、多点静态测试方法测试了平放和侧立速生杉木锯材的抗弯弹性模量，评价了测试方法和节子对足尺速生杉木锯材抗弯性能的影响。结果表明：不同测试方法的抗弯弹性模量分布均为正态分布，不同测试方法的抗弯弹性模量间存在较好相关性，平放时的动态弹性模量和静态弹性模量相关性最高。多点静态弹性模量测试结果表明：弹性模量最大值均处于没有节子或节子个数极少的情况下，节子数量较少以及节子尺寸较小的试件抗弯强度更高。
Abstract：Chinese fir has been served as an important building material in China. In recent years, fast-growing Chinese fir has demonstrated significant development potential in the application of novel engineered wood products. In this study, the number and size of knots in fast-growing Chinese fir lumber were measured and the flexural modulus of elasticity(MOE) for both flat and edge-standing lumber using the transverse vibration method and multi-point static testing was tested. Furthermore, the influence of testing methods and knot characteristics on the flexural performance of full-size fast-growing Chinese fir lumber was evaluated. The results indicated that the distribution of MOE obtained from different testing methods followed a normal distribution, and a strong correlation was observed between the various testing methods. Notably, the highest correlation was found between the dynamic and static MOE values. Additionally, multi-point static flexural modulus tests showed that specimens with no or few knots exhibited the highest MOE, while those with fewer and smaller knots demonstrated better flexural strength.
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基本信息:
DOI：10.19531/j.issn1001-5299.202512003
中图分类号:TS67
引用信息:
[1]宋懿,李勇,王志强,等.测试方法和节子对足尺速生杉木锯材抗弯性能影响[J].林产工业,2025,62(12):15-20.DOI:10.19531/j.issn1001-5299.202512003.
基金信息:
“十四五”国家重点研发计划项目（2021YFD2200605）