桥梁高空双肢薄壁墩重难点施工技术应用研究  

Research on the Application of Key and Difficult Construction Technology for Bridge High-altitude Double-limb Thin-walled Pier

作　　者：王云鹏 WANG Yunpeng(China Railway 14th Bureau Group Third Engineering Co.,Ltd.,Jinan 250000,Shandong,China)

机构地区：[1]中铁十四局集团第三工程有限公司,山东济南250000

出　　处：《工程技术研究》2024年第4期49-51,112,共4页Engineering and Technological Research

摘　　要：在诸多矩形高墩桥梁建设项目中都广泛运用了液压自爬模施工技术,形成了标准化作业,然而,在设计有横系梁的双肢墩施工中需要进行工序调整,其施工难度大、安全风险高,因此,高空横系梁施工环节成为桥梁下部结构施工的重难点。文章结合目前高空横系梁两种常规的施工技术进行对比分析,即高空横系梁和双肢墩节段同时浇筑及双肢墩墩身与横系梁异步施工技术,并以河南省某山区高速公路跨河大桥为依托,综合分析了高空双肢薄壁墩横系梁关键施工技术应用情况,以便对相关重要技术参数进行及时调整,对相关工艺进行优化和创新。Hydraulic self-climbing formwork construction technology has been widely used in many rectangular high pier bridge construction projects,which has formed standardized operations.However,in the construction of double-limb pier with transverse binder,process adjustment is needed,which is difficult to construct and has high safety risk.Therefore,the construction of high-altitude transverse binder has become a key and difficult point in the construction of bridge substructure.This paper compares and analyzes two conventional construction technologies of high-altitude transverse binder,that is,the simultaneous pouring of high-altitude transverse binder and double-limb pier section,and the asynchronous construction technology of double-limb pier body and transverse binder.Based on a river-crossing bridge on a mountainous expressway in Henan Province,this paper comprehensively analyzes the application of key construction technology of high-altitude double-limb thin-walled pier transverse binder,so as to adjust relevant important technical parameters in time,and optimize and innovate the relevant technology.

关 键 词：桥梁双肢薄壁墩 液压自爬模 横系梁 

分 类 号：U445.559[建筑科学—桥梁与隧道工程]