福州大学学报（自然科学版）2011，Vol.39Issue(3)：428-433,6.DOI:CNKI:35-1117/N.20110526.1207.016
三塔自锚式悬索桥主索鞍约束体系研究
Research on main saddle's restriction of self- anchored suspension bridge with three towers
陈永健 1房贞政 1张超1
作者信息
- 1. 福州大学土木工程学院,福建福州,350108
- 折叠
摘要
Abstract
Based on the self - anchored suspension bridge with three towers――Luozhou bridge inFuzhou, the effects on mechanics and deformation of different kinds of main saddle' s restriction schemes are compared by using finite element method. Not only the variation of the deformation and inner force of girder and tower, but also the cable's unbalanced horizontal force are investigated. The results show that main saddle consolidation restriction can reduce the deformation and inner force of girder effectively, and main saddle finite displacement restriction can reduce the horizontal deflection of tower top and the cable' s unbalanced force remarkably. As for multi - tower suspension bridges with large span, it' s very important to control structure deformation. Main saddle consolidation restriction could be adopted to reduce the deformation of girder. Meanwhile cable' s unbalanced force is increasing, and it has bad effect on cable anti - slide and tower bending. Main saddle finite displacement restriction could be adopted to reduce this disadvantage effect. But the device of main saddle finite displacement restriction is expensive, and it's difficult to construct and maintain. Therefore, the selection of main saddle' s restriction scheme should take structure stress, durability, economic efficiency and others into account.关键词
多塔/自锚式悬索桥/有限元/主索鞍/螺洲大桥/福州Key words
multi-tower/ self - anchored suspension bridge/ finite element/ main saddle/ Luozhou bridge/ Fuzhou分类
交通工程引用本文复制引用
陈永健,房贞政,张超..三塔自锚式悬索桥主索鞍约束体系研究[J].福州大学学报（自然科学版）,2011,39(3):428-433,6.
