基于钻芯法的既有木结构树种鉴定研究

Study on Tree Species Identification of Existing Timber Structure Based on Drilled Core Method

基于钻芯法开展既有木结构树种鉴定研究,研发取芯专用钻头,并基于芯样宏、微观特征综合判定树种。研究结果表明,直径和高度均为30mm的圆柱形芯样能完整保留木材宏观理化特征,且可用于制作横切面、径切面、弦切面切片,3个方向的切片能准确反映木材微观特征;木材宏、微观结合的判定方法能准确鉴定树种,可为既有木结构树种鉴定提供可行方法。

This paper summarized a study on tree species identification of existing timber structures based on drilled core method. A special drill bit for coring of existing timber structure was initially developed,and then the tree species were comprehensively evaluated based on the macroscopic and microscopic characteristics of the core samples. Research results show that the cylindrical core samples with a diameter of 30 mm and a height of 30 mm can retain the macroscopic physical and chemical characteristics of timber. The samples can be used to make cross section slices,radial section slices and tangential section slices. The slices in the three directions can accurately reflect the microscopic characteristics of timber. The identification method of the combination of macroscopic and microscopic characteristics can reasonably discriminate the tree species. The research can provide technical method for tree species identification of existing timber structure.