某大跨径矮塔斜拉桥设计研究  

Research on the Design of a Large-span Extradosed Cable-stayed Bridge

作　　者：杨吉红 熊娟 YANG Ji-hong;XIONG Juan(Hubei Communications Investment Wutian Expressway Co,Ltd,Tianmen 431701,China;Hubei Communications Planning and Design Institute Co,Ltd,Wuhan 430051,China)

机构地区：[1]湖北交投武天高速公路有限公司,天门431701 [2]湖北省交通规划设计院股份有限公司,武汉430051

出　　处：《建材世界》2024年第2期85-89,共5页The World of Building Materials

摘　　要：以某高速公路为研究背景,基于工程特点和地质条件,依托规范,进行整体建模计算分析,设计了某大跨径矮塔斜拉桥。上部结构采用预应力混凝土部分斜拉桥,跨径布置为118 m+220 m+118 m,单箱双室大悬臂斜腹板展翅宽幅箱形主梁,人字形主塔,单索面扇形、横向双排布置斜拉索,塔梁墩固结体系;下部结构采用双肢薄壁墩、群桩基础。该设计结果可以满足桥梁结构稳定性保障、经济效益控制以及桥梁环保设计等方面的需求。With an expressway as the research background,based on engineering characteristics,geological conditions and design code,the finite element numerical analysis was carried out to design a large-span extradosed cable-stayed bridge.The superstructure adopts prestressed concrete partial cable-stayed bridge with span arrangement of 118 m+220 m+118 m,single box and double chamber large cantilever diagonal web wide box girder and Herringbone-shaped main tower.The cable-stayed cables are arranged in single plane fan-shaped and double horizontal rows.The tower girder pier is consolidated system.The lower structure adopts double-limb thin-wall pier and pile group foundation.The results can meet the needs of bridge structural stability,economic benefit control and environmental protection design.

关 键 词：斜拉桥 桥梁设计 双肢薄壁墩 结构验算 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]