惠州鹅城大桥主桥总体设计  

Overall Design of Main Bridge of Echeng Bridge in Huizhou

作　　者：杨泽伟 胡华 冀苏伟 赵佳男 YANG Ze-wei;HU Hua;JI Su-wei;ZHAO Jia-nan(Hubei Jianke International Engineering Co.,Ltd.,Wuhan 430010,China;Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]湖北建科国际工程有限公司,湖北武汉430010 [2]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《世界桥梁》2022年第6期7-13,共7页World Bridges

摘　　要：惠州鹅城大桥连接惠州江北中心区与水口中心区,以东江之“水”、惠州之“鹅”为主要元素进行主桥演绎设计,采用(50+180+180+50) m四跨连续斜跨异型下承式系杆拱桥,采用钢梁钢拱结构,拱梁固结、墩梁分离。主桥采用竖向和水平向分离的组合式支撑体系;拱跨标准段、梁跨标准段及拱梁结合段主梁分别采用分离式双小边箱+工字梁、半封闭双小边箱及全封闭整箱横断面;拱肋系统由主拱肋、副拱肋、主副拱肋间斜杆、副拱肋间曲杆和曲杆间水平拉索组成;吊杆呈空间放射布置,吊杆上锚点通过锚管或锚梁锚固于主拱拱肋内,下锚点通过钢锚箱锚固于主梁外侧斜腹板上;鹅形塔柱为空间曲面塔柱,根部与主梁固结形成整体刚性节点;桥面铺装采用UHPC桥面铺装。主桥施工采用先顶推主梁再梁上少支架竖转架设拱肋的分部顶推和架设方案。The Echeng Bridge in Huizhou connects the central areas of Jiangbei and Shuikou,the design of which draws inspiration from the "water" of the East River and the "goose" of Huizhou.The bridge is an irregular continuous skew tied-arch bridge with two main spans of 180 m and two side spans of 50 m.The steel arches are fixed with the steel deck,while bearings are installed on the top of piers.The main bridge contains a combined supporting system featuring the separated vertical and horizontal supports.The deck system consists of split small edge box girders and I cross beams(in main spans),half-closed small edge box girders(in side spans)and closed full-width box girders(arch-deck joint section).The arch system incorporates the main arch ribs,secondary arch ribs,diagonals between the main and secondary arch ribs,the curved struts and the horizontal cables between the curved struts.The hangers are arranged like rays,which are anchored with the arch ribs via anchor tubes or anchor beams and anchored with the outer oblique webs of the box girders via steel anchor boxes.A tower,resembling two kissing swans,rises from the intersection of the arch ribs,with the base fixed with the deck to be an integral rigid joint.The deck is paved with UHPC.The deck system was constructed by the incremental launching method,after the completion of which,a small amount of scaffolds were mounted on for the vertical rotation erection of the arch ribs.

关 键 词：斜跨异型下承式系杆拱桥 钢梁 钢拱 鹅形塔 UHPC铺装 顶推施工 支架竖转 桥梁设计 

分 类 号：U448.225[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]