湖南大学学报（自然科学版）2011，Vol.38Issue(6)：13-19,7.
独塔悬索桥基本参数研究
Research on Suspension Bridges with a Single-tower
摘要
Abstract
Based on the deflection theory and equal-substitute beam method, the reasonable rise-span ratio and height-span ratio were suggested. A single-tower suspension bridge was designed according to the proposed rise-span ratio and height-span ratio, and was compared with a three-tower suspension bridge. According to the results, the number of main cables and the tower's construction cost of a single-tower suspension bridge reduced by 14% and 3. 5%, respectively, as compared with a three-tower suspension bridge. The ratio of deflection to span, the maximum rotation angle of the main girder and the longitudinal displacement of the tower top in a single-tower suspension bridge are lower than that computed for a three-tower suspension bridge separately under live load. Therefore, a single-tower suspension bridge is more e-conomical and competitive, compared with three-tower suspension bridges.关键词
桥梁工程/独塔悬索桥/挠度理论/等代梁法/矢跨比/高跨比/三塔悬索桥Key words
bridge engineering/ single-tower suspension bridge/ deflection theory/ equal-substitute beam method/ rise-span ratio/height-span ratio/ three-tower suspension bridge分类
交通工程引用本文复制引用
蒋望,邵旭东,彭旺虎,余加勇..独塔悬索桥基本参数研究[J].湖南大学学报（自然科学版）,2011,38(6):13-19,7.基金项目
国家自然科学基金资助项目(50778071,50908083) （50778071,50908083）
