官渡河特大桥合龙顶推力设计研究  

Research on closure thrust of Guandu River Bridge

作　　者：何利[1] 康玲 李胜[3] He Li;Kang Ling;Li Sheng(Sichuan Road&Bridge(group)Co.,Ltd.,Chengdu 610041,China;Sichuan Highway Planning,Survey,Design and Research Institute Ltd,Chengdu 610041,China;Sichuan Transportation Vocational College,Chengdu 610041,China)

机构地区：[1]四川公路桥梁建设集团有限公司,四川成都610041 [2]四川省公路规划勘察设计研究院有限公司,四川成都610041 [3]四川交通职业技术学院,四川成都611130

出　　处：《山西建筑》2020年第14期130-131,共2页Shanxi Architecture

基　　金：四川省交通科技项目(项目编号:2016-自1-5)。

摘　　要：以江习古高速官渡河特大桥为工程依托,通过结构有限元计算,对比分析了高墩大跨连续刚构施加1500 kN顶推力合龙和不施加顶推力合龙时,桥墩控制截面的内力和变形,技术对比和工程应用表明:官渡河特大桥不施加顶推力合龙既满足受力要求,又简化施工,节约工期。该研究为类似高墩大跨连续刚构的合龙提供了技术支撑。Based on the Guandu River Bridge of Jiangxigu expressway,compared with the internal force and deformation of the control section,when the high pier and long-span continuous rigid frame bridge apply 1500 kN force to closure or closure without force,through the structural calculation.Technical comparison and engineering application show that the closure of Guandu River Bridge without force can not only meet the stress requirements,but also simplify the construction process and save the time of construction.The research of this paper provides technical support for the closure of similar high pier long-span continuous rigid frame bridge.

关 键 词：连续刚构桥 高墩 合龙 顶推力 

分 类 号：U445[建筑科学—桥梁与隧道工程]