从本讲开始,我们将陆续介绍受弯构件、轴心受压构件、偏心受压构件、轴心受拉构件、偏心受拉构件、受扭构件等结构构件的计算方法。以上几类构件,除了受扭构件外,其他几种构件的横截面所受的内力均可统一地用一个轴向力N和一个弯矩M同时作用来表示(图1)。N和M的关系曲线示于 From the beginning of this lecture, we will introduce calculation methods for structural members such as flexural members, axial compression members, eccentric compression members, axial tension members, eccentric tension members, and torsion members. In the above types of components, in addition to the torsion members, the internal forces of the cross-sections of several other components can be uniformly represented by an axial force N and a moment M (Fig. 1). The relationship between N and M is shown in