Optimisation of Cable Dome Structure Design for Progressive Collapse Resistance

Since the literature lacks an effective analysis method of collapse mechanisms and optimisation design theory for progressive resistance cable dome structure, a structural performance-based approach was proposed to improve structures in this study. First, dynamic response model structure were analysed after its members removed using Ansys LS-DYNA full equivalent load-based instantaneous unloading method. Second, importance coefficients calculated determine contribution each member structure. Finally, stepwise solution by integrating global model, which uses mean all as index, with local minimises maximum coefficient. The results indicated that different exhibited varying levels inner outer hoop cables demonstrating highest importance, followed upper string tension hoop. other had low importance. Compared based on Geiger topology, Levy topology more resistant collapse; such decreased number cable-truss frames decreased. Additionally, genetic algorithm reduced coefficient (i.e., cable) 60.26%.