Abstract
Practical designs of double-layer grids often fail to achieve full utilization of the structural efficiency inherent in this spatial framework. This inefficiency is due partly to the tendency to use a small number of different cross-sections, and partly to the sensitivity of compression members with `brittle type' buckling characteristics to imperfections. Prestressing can enhance structural efficiency through recruitment of unutilized member capacity. The procedure also enables improvement of ductility through some controlled strength trade-off. Results of the experimental work presented in this paper indicated increased strength of 40% compared with the non-prestressed configuration as well as enhanced ductility in the peak load region. Larger enhancements are feasible in large grids.
| Original language | English |
|---|---|
| Pages (from-to) | 21-26 |
| Number of pages | 6 |
| Journal | International Journal of Space Structures |
| Volume | 9 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1 Jan 1994 |
| Externally published | Yes |
ASJC Scopus subject areas
- Conservation
- Civil and Structural Engineering
- Architecture
- Building and Construction