塔里木大桥主桥索塔设计  

Design of Main Bridge Pylon of Tarim River Extra Large Bridge

作　　者：刘博海 赵传亮 LIU Bohai;ZHAO Chuanliang(Tianjin Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300392,China)

机构地区：[1]天津市政工程设计研究总院有限公司,天津300392

出　　处：《天津建设科技》2025年第1期18-22,共5页Tianjin Construction Science and Technology

摘　　要：针对双柱式变截面弧线形混凝土塔柱受力状态较为复杂的问题,以塔里木大桥主桥为例,对下横梁设置方案、索塔曲线线形优化以及中横梁位置确定等问题进行分析比较。研究表明:取消下横梁可降低索塔超静定次数,对塔柱根部应力的减小影响显著;不同的曲线线形影响塔柱根部尺寸和整体受力;中横梁的位置对塔柱横桥向的变形影响明显。综合考虑受力状态、位移变形、外形美观等因素,最终确定合理的索塔结构形式。Aiming at the complex stress state of double column variable cross-section curved concrete tower columns,this study takes the main bridge of Tarim Bridge as an example,analyze and compare the design process for the lower crossbeam setting scheme,optimization of the cable tower curve shape,and determination of the position of the middle crossbeam.Research has shown that removing the lower crossbeam can reduce the number of times the cable tower is statically indeterminate,and has a significant impact on reducing the stress at the root of the tower column;different curve shapes affect the root size and overall stress of tower columns;the position of the middle crossbeam has a significant impact on the deformation of the tower column in the transverse direction of the bridge.Taking into account factors such as stress state,displacement deformation,and aesthetic appearance,a reasonable form of cable tower structure is ultimately determined.

关 键 词：斜拉桥 索塔 混凝土塔柱 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]