Optimization of Large Span Double-layer Torsional Reticulated Shell
WU Yun-fang,ZHANG Liang-liang,SU Yao-cong
DOI:10.11835/j.issn.1674-4764.2004.02.014
Received ,Revised November 20, 2003, Accepted , Available online July 01, 2015
Volume ,2004,Pages 59-62
- Abstract
The objective function of minimum cost is established for double layer torsional reticulated shell, taking the rise-span ratio, grid size and shell thickness as design variables. Based on the exhaustion and 0.618 methods, the computing program LSD has been developed. For the double layer torsional reticulated shell with the span of 50 m to 80m, the optimal grid size and thickness have been obtained for systems of light roof materials with different spans. Empirical formulas are deduced from the results.