Concept proposal and feasibility verification of the Annular Crossed Cable-Truss Structure

摘要

A new concept for improving the robustness of pre-stressed spatial structures was introduced. The purpose of this concept is to avoid existing key elements by creating an alternative load path for every structural member. With this new concept, the Annular Crossed Cable-Truss Structure was proposed. How to defining the target geometry, force-finding, and designing connections for the Annular Crossed Cable-Truss Structure were illustrated by means of designing an experimental set-up. Feasibility of the structure, including self-weight, structural stiffness, and structural adaptability in asymmetric load arrangement, was discussed based on experimental results. The results show that the Annular Crossed Cable-Truss Structure can have a light self-weight, reasonable structural stiffness, and acceptable adaptability in asymmetric load arrangement. It is concluded that the Annular Crossed Cable-Truss Structure is a feasible pre-stressed spatial structure.