怀化高堰西路舞水大桥主桥设计  

Design of Main Bridge of Wushui Bridge on West Gaoyan Road in Huaihua

作　　者：杨纪[1] 李杰[2] 怀臣子[1] 冯冠杰[2] 杜国鹏 YANG Ji;LI Jie;HUAI Chen-zi;FENG Guan-jie;DU Guo-peng(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China;School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003 [2]郑州大学土木工程学院,河南郑州450001

出　　处：《世界桥梁》2019年第5期7-11,共5页World Bridges

基　　金：河南省重点研发与推广专项(科技攻关)(192102310227)

摘　　要：怀化高堰西路舞水大桥桥跨布置为(49.9+40+190+110+39.9)m。东岸(49.9+40)m为预应力混凝土曲线连续梁桥;(190+110)m为钢-混混合梁独塔自锚式悬索桥;西岸39.9m为预应力混凝土直线梁桥。预应力混凝土梁采用单箱6室截面,钢梁采用封闭箱形截面。2根主缆采用空间形式的预制平行钢丝索股(PPWS),矢跨比为1/11.5。桥塔采用门形结构,基础采用水下混凝土嵌岩桩。大桥采用先梁后缆的施工方法。利用有限元软件对大桥进行整体结构计算和局部应力分析,结果表明大桥的主缆和吊索应力、主梁应力均满足规范要求。The Wushui Bridge on West Gaoyan Road in Huaihua has six spans of 49.9,40,190,110,and 39.9 m.The east two spans of 49.9 and 40 m form a prestressed concrete curved continuous beam bridge,the central two spans of 190 and 110 m form a single tower hybrid girder self-anchored suspension bridge and the west span of 39.9 m is a prestressed concrete straight beam bridge.The prestressed concrete beam adopts a six-cell single box cross-section and the steel beam adopts the closed box cross-section.The two main cables are formed of prefabricated parallel steel wire strands (PPWS),with a rise to span ratio of 1/11.5.The tower is a portal-frame structure,resting on the foundation formed of tremie concrete rock-embedded piles.The construction of the bridge proceeded from the girder to the cables.The finite element software was used to calculate the overall structure and analyze local stresses.The results show that the stresses in the main cables,hanger cables and main girder of the bridge all meet the code requirements.

关 键 词：自锚式悬索桥 钢-混混合结构 预应力混凝土连续梁 主缆 门形桥塔 桩基 桥梁设计 有限元法 

分 类 号：U448.25[建筑科学—桥梁与隧道工程] U449.1[交通运输工程—道路与铁道工程]