我们试验的几个树种的木材力学强度值,均为无缺陷的小试件在特定条件下按国家标准规定的方法测出的,它与实际使用时的情况有很大出入。因此,这些强度值在木结构设计中不能直接引用,必须用多方面的影响因子对力学强度值给以折减。折减后的 The wood mechanical strength values ​​of several tree species we tested are all defect-free small test pieces measured according to the national standard under certain conditions, which is quite different from the actual situation. Therefore, these strength values ​​can not be directly quoted in the design of wood structures, and the mechanical strength values ​​must be reduced with various influencing factors. After the reduction