在研究各种结构的计算方法以前,先按照结构共同的以及独特的特征,归纳成以下几种类型。1.平面结构与空间结构当结构构件的轴线都位于同一平面内,而且荷载也都作用于同一平面内,那么,这个结构便称为平面结构。反之,如果构件的轴线不在同一平面或者荷载没有作用于结构平面内,那末,这类结构便称为空间结构。 Before studying the calculation methods of various structures, the following types were summarized according to the common and unique features of the structure. 1. Plane Structure and Space Structure When the axes of the structural members are in the same plane and the loads also act in the same plane, then the structure is called a planar structure. On the other hand, if the axes of the components are not in the same plane or the load does not act on the plane of the structure, then such structures are called spatial structures.