襄樊汉江三桥主桥设计与技术特点  

Design and Technical Characteristics of Main Bridge of the Third Xiangfan Hanjiang River Bridge

作　　者：张铭[1] 詹建辉[1] 袁任重[1] 陈杏枝[1] 张家元[1] 

机构地区：[1]湖北省交通规划设计院,湖北武汉430051

出　　处：《世界桥梁》2011年第1期9-12,共4页World Bridges

摘　　要：襄樊汉江三桥主桥为主跨310 m的预应力混凝土双塔双索面斜拉桥,桥塔采用无上横梁双直立塔柱,主梁横向宽度达35 m,采用分离式混凝土双边箱结构,斜拉索为平行索面。为实现无上横梁双直立塔柱的景观效果,设计采取多种措施以弥补该体系对大桥动力特性特别是横向稳定性的削弱。从材料、构造措施方面对桥梁耐久性进行设计,以保证大桥的长效使用寿命。The main bridge of the Third Xiangfan Hanjiang River Bridge is a prestressed concrete cable-stayed bridge with double pylons and double cable planes and with a main span of 310 m.A pylon of the bridge has two vertical columns with no upper cross beam,the main girder,35 m in width in the transverse direction,is a separated concrete structure having two side boxes and the stay cables are of the cable planes arranged in parallel.To achieve the landscape effect for the pylon having two vertical columns with no upper cross beam,a number of measures have been taken in the design to compensate the weakening of the dynamic behavior of the bridge,particularly the transverse stability,of such type of the structural system and the durability of the bridge is appropriately designed by the rational utilization of materials and structural formation so as to eventually ensure the long-term service life of the bridge.

关 键 词：斜拉桥 桥塔 主梁 桥梁设计 

分 类 号：U448.27[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]