本文比较研究了正在我国迅速发展的大跨度空间格构式结构—双层筒形网壳静力分析的力学模型.通过采用线性铰结及刚结两种模型分别计算了各种类型的双层筒形网壳,比较分析了两种力学模型计算所得的位移及内力,指出了两种力学模型的应用范围及合理性.分析表明,在实际工程中,可近似按铰结模型进行设计,但对杆件轴力、钢材的允许应力应作适当修正. This paper compares and studies the mechanical model of the double-layer cylindrical reticulated shell for static analysis of a large-span spatial lattice structure that is rapidly developing in China. Various types of double-layers were calculated by using linear hinge and rigid-joint models. The cylindrical reticulated shells comparatively analyzed the displacements and internal forces calculated by the two mechanical models, and pointed out the application scope and rationality of the two mechanical models. The analysis shows that in the actual project, the hinge joint model can be designed approximately, but The axial force of the rod and the allowable stress of the steel should be properly corrected.