Research on On-site Loose Assembly Process of Steel-concrete Composite Section of High and Low Tower Cable-stayed Bridge
虞伟 YU Wei
（四川公路桥梁建设集团有限公司大桥分公司，成都 610000）
（Sichuan Road and Bridge Construction Group Co.，Ltd. Bridge Branch，Chengdu 610000，China）
摘要：钢混结合段是混凝土主梁过渡到钢箱梁的重要部位，其重量大，整体尺寸大，整体运输和吊装往往会受到周边环境的限制。本文以汉巴南铁路嘉陵江特大桥钢混结合段安装为研究对象，采用在桥位搭设钢管支架，在支架上制作胎架，将钢混结合段板单元运输到桥位，采用塔吊进行吊装，现场散拼施工工艺。该工艺完成的钢混结合段，各项指标满足规范和设计要求，具有较好的推广价值。
Abstract: The steel-concrete composite section is an important part of the transition from the concrete main beam to the steel box beam. It has a large weight and overall size, and its transportation and hoisting are often limited by the surrounding environment. This article takes the installation of the steel-concrete composite section of the Jialing River Extra Large Bridge on the Hanba-Nan Railway as the research object. The methods of installing steel pipe supports at the bridge site and making tire shelves on the supports is used to transport the steel-concrete composite section plate units to the bridge site. The tower crane is used for hoisting, and the on-site loose assembly construction process is employed. The steel-concrete composite section completed by this process meets the specifications and design requirements in all indicators, and has good promotion value.
关键词：钢混结合段；支架；吊装；板单元；现场组拼
Key words: steel-concrete composite section；support；hoisting；plate unit；on-site assembly
中图分类号：U448.27 文献标识码：A 文章编号：1006-4311（2024）27-085-03 doi:10.3969/j.issn.1006-4311.2024.27.025
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