组合梁斜拉桥合理边中跨比探究
Research on Reasonable Side to Mid-span Ratio of Composite Beam Cable-stayed Bridges
林惠文 1詹海鹏1
作者信息
- 1. 中交公路规划设计院有限公司,北京 100088
- 折叠
摘要
组合梁斜拉桥由于自重较混凝土轻,跨越能力更大,近年来得到广泛的应用.边中跨比是斜拉桥设计中一个重要的参数,不同的边中跨比对结构的刚度、内力等产生很大的影响.文章以420 m组合梁斜拉桥为例,建立多个有限元模型,分析探讨不同的边中跨比对斜拉桥的主梁、拉索、桥塔等构件的影响,得到组合梁斜拉桥合理的边中跨比.文章对实际工程设计有一定的指导意义.
Abstract
Composite beam cable-stayed bridges have been widely used in recent years due to their lighter self weight and greater crossing capacity compared to concrete bridges.The side to mid-span ratio is an important parameter in the design of cable-stayed bridges,and different side to span ratios have a significant impact on the stiffness,internal forces,and other aspects of the structure.This paper takes a 420 m composite beam cable-stayed bridge as an example,establishes multiple finite element models,analyzes and explores the effects of different side to span ratios on the main beam,cables,bridge towers,and other components of the cable-stayed bridge,and obtains a reasonable side to span ratio for the composite beam cable-stayed bridge.This paper has certain guiding significance for practical engineering design.
关键词
组合梁/斜拉桥/边中跨比/刚度/应力Key words
composite beam/cable-stayed bridge/side to mid-span ratio/stiffness/stress引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据