以采自我国东北林区１１个树种的木材为试材，设置水分饱和２０、１００℃和气干２０℃三种测试条件，对不同树种的试材，分别进行径向和弦向的大变形压缩试验。以力学试验机、绘图仪、Ａ／Ｄ转换器、电子计算机构成数字化采集系统，连续采集压缩过程中的变形及载荷数据，转换为应力—应变数据文件。经数学推导和统计分析，得出能够揭示木材横纹压缩大变形全过程，较完善地定量描述常用树种的各种压缩条件下应力—应变关系的数学表达式。比较分析了不同构造类型（针叶树材、阔叶树材、散孔材、半散孔材和环孔材）的木材横纹压缩力学指标参数在径向和弦向上的差异，剖析了木材构造因子对上述差异的影响 Taking the timber collected from 11 species in the northeastern forest region of our country as test materials, three test conditions of water saturation at 20,100 ℃ and air-dry at 20 ℃ were set up, and large deformation compression tests in radial chord direction . The mechanical testing machine, plotter, A / D converter, electronic computer digital acquisition system, continuous collection of deformation and load during compression data, converted to stress-strain data files. After mathematic deduction and statistical analysis, we can get the mathematical expressions that can reveal the whole process of large deformation of transverse compression of wood and better describe the stress-strain relationship under various compression conditions of commonly used tree species. The difference of radial chord direction of timber transverse compression mechanics index parameters of different types of constructs (conifer, broadleaf, diffuse, semi-diffuse and ring) was compared and analyzed. Impact