This paper aimed to obtain effective member force data on the double-layer latticed steel structures through truss and shell theory. A cylindrical shell was adopted as model for static analysis. In many cases, lattice structures were constructed through repetitive use of the same units. In such cases, by using the regularity of the structure, the difference expression and continuum analogue methods could be used as shown in the following sections. These methods were usually simpler than the matrix method in expression and calculation. For the analysis of latticed structures, the stiffness matrix was obtained using the geometrical shape and material properties of space frame. Then, nodal force and displacements were obtained using general shell analysis. Finally, the member forces of space frame were decided through the coordinate transformation matrix. The proposed analysis procedure was found to be applicable. This analysis is expected to be available for the design of double-layer latticed steel structures.
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