Behavior of a Single Layer Spherical Dome with Openings and Large Depth-To-Span Ratio

Abstract

In this article, the design procedure for a single layer spherical dome engineering project, with openings and large depth-to-span ratio is introduced and its installation method is explained briefly. The supporting node and the connection node are described in detail. Using the 3-D straight beam element with constant cross section in T.L. Formulation, the eigen-buckling of this spherical dome is analyzed by the Block Lanczos Method and the equilibrium path is traced taking the initial geometric imperfection into account by the Cylindrical Arc Length Method. The influence of the wind force on the load capacity of the dome is discussed. Using the Subspace Iteration Method, the first 20 frequencies and their vectors are calculated. Some properties are also discussed. Conclusions are drawn and several suggestions are put forward in the paper.