玉环漩门湾大桥主桥总体设计  

Overall Design of the Main Bridge of Yuhuan Xuanmen Bay Bridge

作　　者：沈佳伟 王祯伟 周海根 SHEN Jia-wei;WANG Zhen-wei;ZHOU Hai-gen(Zhejiang Highway&Water Transport Engineering Consulting Group Co.,Ltd.,Hangzhou 310030,China;Zhejiang Digital&Intelligent Transportation Institute Co.,Ltd.,Hangzhou 310030,China)

机构地区：[1]浙江公路水运工程咨询集团有限公司,浙江杭州310030 [2]浙江数智交院科技股份有限公司,浙江杭州310030

出　　处：《中国市政工程》2025年第1期66-70,146,147,共7页China Municipal Engineering

摘　　要：浙江省玉环市的漩门湾大桥主桥为(120+75)m独塔半飘浮体系斜拉桥。斜拉索采用平行钢绞线拉索,按扇形空间双索面布置,共28根斜拉索;塔端和梁端分别采用钢锚梁和钢锚箱锚固;主梁采用钢-混组合梁,全宽39 m,设置2片钢纵梁和1片小纵梁,钢纵梁高2.6 m,预制桥面板厚26 cm;桥塔采用“月环”形造型,塔高63m,断面为单箱三室,并在桥塔底部与承台相接处设置钢-混结合段。桥梁设计寿命为100年,根据桥梁所处环境重点考虑耐久性设计。结构分析结果表明:该桥各构件静力性能均满足规范要求;E1地震下处于完全弹性状态,E2地震下基本处于弹性状态,支座位移满足规范性能目标;该桥抗风稳定性满足规范要求。主桥桥塔采用“小节段加工+大节段组拼”吊装施工,主梁采用支架法施工。The main bridge of Xuanmen Bay Bridge in Yuhuan City,Zhejiang Province,is a(120+75)m single-pylon semi-floating system cable-stayed bridge.The cables consist of 28 parallel steel strand cables arranged in a fan-shaped spatial double-surface configuration.Steel anchor beams and steel anchor boxes are used for anchoring at the tower and beam ends,respectively.The composite steel-concrete main beam has a full width of 39 m,featuring two steel longitudinal beams(each 2.6 m high)and one small longitudinal beam.Prefabricated bridge deck panels(26 cm thick)are employed.The tower,with a lunar ring shape and a height of 63 m,features a single-box three-chamber cross-section and a steel-concrete transition section at the base connecting to the pier.The bridge is designed for a 100-year service life,with durability prioritized due to its environmental exposure.Structural analysis results indicate that all components meet static performance requirements per codes;under E1 earthquake loading,the structure remains fully elastic,while under E2 loading,it exhibits primarily elastic behavior with support displacements within code limits.Wind resistance stability is also compliant with specifications.The main bridge was constructed using a small-segment processing combined with large-segment assembly lifting method for the tower,and the main beam was erected via the scaffolding method.

关 键 词：斜拉桥 钢-混组合梁 异形桥塔 耐久性设计 静力性能 抗震性能 抗风性能 桥梁设计 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]