Precise installation and construction method for overpass high-speed steel box girder: Fid-Bau Portal

Precise installation and construction method for overpass high-speed steel box girder

LIU BAO / NI WENXIANG

The invention discloses a precise installation construction method for an overpass high-speed steel box girder. According to the technical scheme, the precise installation construction method is characterized by comprising the following steps that S1, a construction site is surveyed; s2, the steel box girder is manufactured and transported in a segmented mode according to the survey result; s3, assembling the steel box girder on site; s4, making a hoisting scheme; s5, hoisting and welding the steel box girder; s6, a temporary support is manufactured and assembled; s7, optimization calculation of the temporary support; s8, temporary support foundation construction; s9, hoisting installation is carried out, and detection is carried out after installation; the accurate installation construction method for the overpass high-speed steel box girder is simple, and the steel box girder is manufactured and transported in a segmented mode according to the survey result by adopting the survey on the construction site; the method comprises the steps of steel box girder on-site assembling, hoisting scheme making, steel box girder hoisting and welding, temporary support manufacturing and assembling, temporary support optimization calculation, temporary support foundation construction, hoisting installation, detection after installation and the like, construction can be rapidly achieved, and good safety is achieved.

本发明公开了一种上跨高速钢箱梁精准安装施工方法，其技术方案要点是：包括以下步骤：S1、施工现场勘测；S2、根据勘测结果进行钢箱梁分段制造、运输；S3、钢箱梁现场组拼；S4、制定吊装方案；S5、钢箱梁吊装焊接；S6、临时支架制作组立；S7、临时支架优化计算；S8、临时支架基础施工；S9、吊装安装，安装后进行检测；本上跨高速钢箱梁精准安装施工方法较为简单，通过采用施工现场勘测、根据勘测结果进行钢箱梁分段制造、运输；钢箱梁现场组拼、制定吊装方案、钢箱梁吊装焊接、临时支架制作组立、临时支架优化计算、临时支架基础施工、吊装安装，安装后进行检测等步骤，能够快速实现施工，并具有较好的安全性。

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