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- Title
Static Behavior of a Retractable Suspen-Dome Structure.
- Authors
Shen, Xuhong; Zhang, Qian; Lee, Daniel Sang-Hoon; Cai, Jianguo; Feng, Jian
- Abstract
A new design of a radially retractable roof structure based on the concept of the suspen-dome is proposed in this paper. The radially foldable bar structure is strengthened by the lower cable-strut system to obtain a higher structural stiffness. Then the comparison of the static behavior between the retractable suspen-domes and their corresponding foldable bar shell with quadrangular mesh is discussed. Moreover, the effects of different structural and geometric parameters, such as the rise-to-span ratio, the cross-section area of beams, cables and struts, and the pre-stress level of the lower cable-strut system, on the nodal displacements and member forces are investigated systematically. The results show that higher structural stiffness is anticipated with the introduction of cable-strut systems into the hybrid structure. When the rise-to-span ratio is equal to 0.2, the maximal nodal displacement of the suspen-dome reaches the minimal value. The increase of the cross-section area of steel beams contributes an enormous amount to the structural stiffness. Increasing cable and strut sections has little impact on the mechanical behavior of suspen-domes. Moreover, the prestress level of cable-strut systems has a slight influence on the nodal displacements and member forces. Parametric analysis can be regarded as an essential basis for the optimization of the design of a retractable suspen-dome structure.
- Subjects
HYBRID systems; PRESTRESSED concrete
- Publication
Symmetry (20738994), 2021, Vol 13, Issue 7, p1105
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym13071105