Form Finding and Structural Optimisation of Tensile Cable Dome Using Parametric Modelling Tools

Abstract

In this paper, a new framework of form finding and structural optimisations for tensile domes was developed using a cutting-edge parametric modelling tool, Grasshopper in Rhino. The detailed exploration of this new technique is presented. It is found that the use of this parametric tool allows a more intuitive, rapid and flexible design. Structural optimisation of the member sizes, topology and surface can be explored easily at an initial design stage in a project, providing a more effective and efficient way for form finding and structural optimisation. Based on the new method, a prototype tensile dome which is to replicate the existing tensile structure Georgia dome is designed and analysed. The structural behaviour of the cable domes is investigated. Using this new framework, two elliptical tensile domes with new geometric configuration are developed. They exhibit enhanced load-bearing capacity, and therefore can be used in future long-span structure projects.

Keywords:

• form finding
• parametric design
• force density method
• dynamic relaxation method
• Grasshopper

Disclosure statement

No potential conflict of interest was reported by the authors.