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主跨合龙是大跨度钢箱梁桥施工的关键,受气候、结构特点、施工技术方案、施工环境等因素的影响较大。桥位合龙工作能否快速、精准地进行,除了充分的施工准备外,合理、完善的技术方案至关重要。以大榭第二大桥为例主要从施工方案、技术措施及方案实施等方面介绍单索面钢箱梁主跨合龙技术,为同类钢桥梁施工提供借鉴。
The main span closure is the key to the construction of long-span steel box girder bridge. It is greatly influenced by factors such as climate, structural features, construction technology and construction environment. Bridging the bridge can be carried out quickly and accurately, in addition to adequate preparation for the construction, reasonable and sound technical solutions is essential. Taking Daxie Second Bridge as an example, this paper introduces the main span closure technology of single cable plane steel box girder from the aspects of construction plan, technical measures and program implementation, and provides reference for the construction of similar steel bridges.