Abstract
This paper presents a study of a hybrid grid shell, which is made of quadrangular meshes diagonally stiffened by pre-tensioned thin cables. The construction of the hybrid structure by translating a spatial curve against another spatial curve is firstly described. Then the elasto-plastic buckling analyses of the perfect hybrid structure and the corresponding single-layer lattice shell are carried out, and the influence of the asymmetric load on the failure loads is discussed based on a finite element model. Furthermore, the different shapes and sizes of imperfections are considered in this study. Two schemes of imposing imperfections are chosen: the first several eigenvalue buckling modes and the deformed shape of the loaded structure obtained from a geometrical non-linear analysis are chosen as the imperfection shape. Finally, the effects of different structural parameters, such as the rise-to-span ratio, beam section dimension, area and pre-stress of cables and boundary conditions, on the failure loads are investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 752-760 |
| Number of pages | 9 |
| Journal | Journal of Civil Engineering and Management |
| Volume | 18 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 Oct 2012 |
| Externally published | Yes |
Keywords
- elasto-plastic
- failure load
- grid shell
- hybrid structure
- stability
ASJC Scopus subject areas
- Civil and Structural Engineering
- Strategy and Management