大跨度单斜拱斜拉桥自平衡竖向旋转施工技术  

Self-balanced Vertical Rotation Construction Method of Large-span Monoclinic Arch Cable-stayed Bridge

作　　者：陈海洲[1] 杨宗林[2] 张其林[2] CHEN Haizhou;YANG Zonglin;ZHANG Qilin(China Construction Eighth Engineering Division Co.,Ltd.,Shanghai 200120,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]中国建筑第八工程局有限公司,上海200120 [2]同济大学土木工程学院,上海200092

出　　处：《施工技术（中英文）》2022年第5期50-52,109,共4页Construction Technology

基　　金：国家自然科学基金重点项目(51738009)。

摘　　要：在山东淄博潭溪山景区大跨度单斜拱斜拉人行桥施工过程中,首次采用悬崖顶拱桥自平衡高空竖向旋转施工技术,并运用3D3S软件对施工过程进行全面的施工模拟分析。该技术结合施工现场地形条件,将整个桥梁结构经过2次旋转安装到设计位置,拉索依靠重力自动张紧。第1次旋转为桥面梁绕主拱上的节点进行,第2次旋转为桥面梁、拉索及主拱组成的整体结构绕主拱支座处的内置节点进行,2次旋转均为绕两侧节点形成的水平轴进行高空竖向旋转。在保证结构旋转安全的前提下,该施工技术用钢量最少、安全性最好、工期最短。In the construction process of the large-span monoclinic arch cable-stayed bridge in Tanxi Mountain Scenic Area of Zibo City, Shandong Province, the self-balanced high-altitude vertical rotation construction method of the cliff top arch bridge is initially proposed, and the safety of the construction process is comprehensively simulated and analyzed by using 3 D3 S software. According to the topographical conditions of the construction site, the whole bridge structure was rotated twice to the design position, and the cables were tensioned automatically by gravity. The first is the rotation of the bridge deck beam around the node on the main arch, and the second is the rotation of the whole structure, composed of bridge deck beam, cable and main arch, around the built-in node at the main arch support. Both of them were vertical rotation around the horizontal axis formed by the nodes on both sides. On the premise of ensuring the safety of structure rotation, the construction method proposed in the article becomes the most appropriate construction method with the least steel consumption, the best safety and the shortest construction period.

关 键 词：斜拉桥 单斜拱 自平衡 竖向旋转 内置节点 

分 类 号：U445.4[建筑科学—桥梁与隧道工程] U448.41[交通运输工程—道路与铁道工程]