襄阳庞公大桥主桥设计研究  

Research of Design of Main Bridge of Xiangyang Panggong Bridge

作　　者：潘韬[1] 李奇[1] 舒思利[1] 易伦雄[1] PAN Tao;LI Qi;SHU Sili;YI Lunxiong(China Railway Major Bridge Reconnaissance & Design Group Co., Ltd., Wuhan 430056, China)

机构地区：[1]中铁大桥勘测设计院集团有限公司,武汉430056

出　　处：《交通科技》2020年第4期44-47,共4页Transportation Science & Technology

摘　　要：为满足两岸地形条件及通航的要求,襄阳庞公大桥采用施工难度小、经济性好的2×378 m三塔两跨钢板结合梁悬索桥。通过采用钢-混叠合塔结构,解决结构刚度和强度相匹配的问题;同时使用UHPC材料以保证主塔钢-混结合段的安全可靠连接,此外镀锌铝合金高强钢丝的使用有效提高了主缆的耐久性。通过对该桥的计算分析表明,结构的各项指标均满足规范要求。In order to meet the topographic conditions and navigation requirements,the 2×378 m three-tower and two span suspension bridge with steel-plate concrete composite girders was adopted as the main bridge,which had the advantages of small construction difficulty and good economy.By using the steel-concrete composite tower structure,the problem of structural stiffness and strength matching was solved reasonably.UHPC material was used to ensure the safe and reliable connection of the tower steel-concrete joint sections.In addition,the use of galvanized aluminum alloy high strength steel wire effectively improved the durability of the main cable.The analysis results of the bridge showed that all indexes satisfied the code requirements.

关 键 词：三塔悬索桥 钢板结合梁 超高性能混凝土 钢-混叠合塔 

分 类 号：U442.54[建筑科学—桥梁与隧道工程] U448.25[交通运输工程—道路与铁道工程]