双幅小间距高墩曲线桥梁顶推施工技术研究  

Research on the Incremental Launching Construction Technology of Double Amplitude Small-spacing High-pier Curved Bridge

作　　者：季自刚 李锦航 张学辉 Ji Zigang;Li Jinhang;Zhang Xuehui(CCCC Construction Group Co.,Ltd.,Chengdu 610036,China;School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]中交建筑集团有限公司,成都市610036 [2]西安建筑科技大学土木工程学院,西安市710055

出　　处：《北方交通》2024年第11期9-12,共4页Northern Communications

摘　　要：随着公路交通技术的发展,出现了越来越多的双幅小间距高墩曲线桥梁,而顶推施工方法能够有效避免地形地貌的限制。因此,文章对双幅小间距高墩曲线桥梁顶推技术进行研究,通过采用桥墩加宽结构、桥墩加高结构以及预应力配重等临时结构,避免顶推过程中出现横向偏移、小间距桥梁碰撞以及桥墩偏压等问题。经项目验证,采用以上临时结构能够保证顶推过程中桥梁和桥墩的安全性。With the development of highway transportation technology,more and more double amplitude small-spacing high-pier curved bridges emerge,and the incremental launching construction method can effectively avoid the limitations of terrain and landforms.Therefore,the incremental launching technology of the double amplitude small-spacing high-pier curved bridge is studied.The problems such as lateral displacement,small-spacing bridge collision,and bridge pier bias and so on during the incremental launching process are avoided by adopting temporary structures like bridge pier widening structure,bridge pier raising structure,and prestressed counterweight and so on.Through the project verification,the use of the above temporary structures can ensure the safety of the bridge and piers during the incremental launching process.

关 键 词：曲线桥梁 顶推法 小间距桥梁 钢箱梁 

分 类 号：U445.462[建筑科学—桥梁与隧道工程]