| Summary |
This paper proposes a new two-way dome and investigates the effectiveness of the new two-way dome stiffened by a diagonal bracing system. The dome is composed as two orthogonal arches situated at different level. The two sets of surfaces are connected each other by a bracing system in a form of pyramid truss system. Based on the results of elasto-plastic buckling analysis, considering several severe loading cases of uniformly distributed loads and non-uniformly distributed loads, this newly proposed dome is proved to have a high performance in elasto-plastic buckling comparable to an ordinary two-way single layer lattice dome stiffened by diagonal braces. Also, an effective approach is proposed to evaluate elasto-plastic buckling 1oads of the new two-way dome. Finally, based on the column buckling strength, the elasto-plastic buckling loads are evaluated. Using a systematic FEM analysis, the effectiveness is proven for design use for a new two-way dome stiffened by a diagonal bracing system.
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