Mechanical Properties of Hoberman Radially Retractable Roof Structures

In this paper, a spatial Hoberman radially retractable grid shell is constructed based on its planar version and the mechanical properties of the grid shell are analyzed using ABAQUS commercial software. The analysis shows that given carefully chosen parameters, the spatial grid shell can meet the requirements of the specification. Based on this, the influence of the number of multi-angulated rods, the number of segments of the multi-angulated rod, and the rise-span ratio on the mechanical performance of the structure are analyzed. The results show that the increase of the number of multi-angulated rods is beneficial to the mechanical properties of the structure, but will have a negative effect on the economic performance. To reach an optimized configuration, it is chosen such that the number of multi-angulated rods is 18, the steel consumption and the structural performance response are smaller. The decrease of the number of segments of the multi-angulated is beneficial to the mechanical properties, service performance, and economic performance of the structure, but considering the feasibility of processing, transportation and the driving condition setting, it is recommended to choose 4 segments of the multi-angulated rod. Higher rise-span ratio is beneficial to the mechanical properties of the structure in the closed state, but will adversely affect the mechanical properties and economic performance during the deployment.