摘要
多塔部分斜拉桥有别于常规矮塔斜拉桥和多塔斜拉桥,需关注支撑体系、主塔外形和结构设计、主梁结构形式选择等问题。文中以九江八里湖大桥80.55m+2×132m+80.55m三塔戒指造型部分斜拉桥为例,通过对多塔体系的比较、主塔、主梁的受力分析,选择中塔固结、边塔活动的支撑体系,预应力混凝土主塔结构,等高度边箱主梁构造。
The multi tower partial cable stayed bridge is different from the conventional low-tower cable-stayed bridge and multi-tower cable-stayed bridges,then the supporting system,shape and structure design of main tower,and the selection of main girder structure form needs to be pay attention.Taking Jiujiang Balihu ring-shaped cable-stayed bridge with three towers and spans of(80.55m+2×132m+80.55m)as an example,the comparison of multi-tower system and the stress analysis of main tower and girder are performed.The supporting system with consolidation of middle tower and active connection of side tower,the structure of prestressing concrete main tower and the structure of side box girder with equal height are selected.
作者
华波
张忠良
HUA Bo;ZHANG Zhongliang(China Northwest Municipal Engineering Designing and Research Institute Co., Ltd., Wuhan 430056, China)
出处
《交通科技》
2018年第6期72-75,共4页
Transportation Science & Technology
关键词
矮塔斜拉桥
多塔斜拉桥
戒指型塔
支承体系
边箱主梁
low-tower cable-stayed bridge
multi-tower cable-stayed bridge
ring-shape tower
supporting system
side box girder
