研究结论:在连续刚构的结构设计中，可先采用平面杆系法进行结构设计，再采用三维实体元法对结构进 行三维有限元空间分析，并根据空间分析结果对平面设计结果进行修正和调整，以弥补采用平面杆系法进行 结构分析的不足，二者互相补充，为连续刚构的结构设计提供更加可靠的依据。

Research conclusions: In the structure design of the continuous rigid frame, the plane link element method can be adopted for the structure design at first and then the three-dimensional solid FEM can be adopted for making the spatial analysis of the structure. According to the spatial analyzed results, the results of the plane design should be modified and adjusted to make up for the disadvantages of the structure analysis, on which the reliable basis can be provided for the design of continuous rigid frame.