Large-diameter vertical shaft construction supporting structure and construction method thereof: Fid-Bau Portal

Large-diameter vertical shaft construction supporting structure and construction method thereof

XIE YUJUN / WAN ZHEN / CHEN YU / XIE YUNRUI

According to the large-diameter vertical shaft construction supporting structure and the construction method thereof, construction of a pre-foundation is conducted at the shaft bottom, a plurality of supporting brackets are embedded in the inner side face of the pre-foundation, and the supporting brackets are annularly and evenly arranged along the inner side of the pre-foundation and located on the same horizontal plane; the supporting bracket is used for supporting a center truss, a scaffold supporting structure is arranged at the top of the center truss and used for supporting a side formwork, the side formwork extends annularly, and a vertical shaft pouring space is formed between the outer side of the side formwork and the excavated side wall. The technical problems of complex construction operation, high construction cost and high construction safety risk in the prior art are solved.

本发明公开了一种大直径竖井施工支撑结构及其施工方法，在井底进行预先基础的施工，所述预先基础内侧面进行若干支撑牛腿的预埋，若干所述支撑牛腿沿预先基础内侧环状均匀布置，若干所述支撑牛腿在同一水平面上，所述支撑牛腿用于支撑中心桁架，所述中心桁架顶部设置有脚手架支撑结构，所述脚手架支撑结构用于支撑侧模板，所述侧模板沿环状延伸，所述侧模板外侧与开挖侧壁之间形成竖井浇筑空间，解决现有技术中施工操作复杂、施工成本高以及施工安全风险高的技术问题。

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