A Study on the Optimal Shape Analysis of a Cable Dome

초록

The aim of this paper is to propose the optimal conditions for initial stress in which is decided by the shape analysis of cable dome structures. The proposed procedure here used to modified load incremental method adding to N-R method to obtain the solution for nonlinear equation considering geometrical nonlinearity and also this procedures iterated to find the optimal shape with the optimal conditions. The results from the initial stable state and optimal stable state is compared by the stress- deformed analysis about a simplified cable dome which has the radius of 20m, central height of 2.5m. According to the results, it is founded that optimal shape obtained by the proposed optimal condition is almost approximated to the ideal shape proposed by architect, and also obtained the increased resistance for the cable member produced the initial instability phenomena.