Installation method of large-scale venue profile steel tree-shaped column: Fid-Bau Portal

Installation method of large-scale venue profile steel tree-shaped column

ZHAO ZIQING / LIU YONG / ZHOU SAIJUN

The invention discloses an installation method of a large gymnasium section steel tree-shaped column in the technical field of steel structure construction, which comprises the following steps of: sequentially installing a lower column and a middle column on the ground, then welding a back shore beam, an upper column and a ridge beam together on the ground to form a combined body, and hoisting the combined body to the top of the middle column; the steps are repeated, other tree-shaped columns are installed in place, ridge beams of every two adjacent tree-shaped columns are connected together through a connecting beam, finally, a roof system is built, inclined supporting beams are welded between the upper columns and the roof system, and meanwhile interbranch tie bars are welded between crotch beams. The top supporting beam, the upper column and the ridge beam are connected together on the ground, the elevation of the ridge beam can be ensured, then the diagonal supporting beam is welded after the ridge beam and the roof system are in lap joint, it can be ensured that the diagonal supporting beam stably supports the roof system, and therefore the installation efficiency and the installation precision of the tree-shaped column are improved, and the installation cost is reduced. And the high-altitude operation difficulty of workers is also reduced.

本发明公开的是钢结构施工技术领域的一种大型场馆型钢树状柱的安装方法，包括以下步骤：先在地面上依次安装下部柱和中部柱，然后在地面上将顶撑梁与上部柱和屋脊梁焊接在一起形成一个组合体，并将该组合体吊装到中部柱顶部，重复上述步骤，将其余树状柱安装到位，并用连接梁将相邻两个树状柱的屋脊梁连接在一起，最后搭建屋盖系统，将斜撑梁焊接在上部柱与屋盖系统之间，同时在树杈梁之间焊接枝间系杆。通过在地面上先将顶撑梁与上部柱和屋脊梁连接在一起，可确保屋脊梁的标高，之后在将屋脊梁与屋盖系统搭接好后再焊接斜撑梁，能确保斜撑梁对屋盖系统的稳定支撑，从而提高了树状柱的安装效率和安装精度，也降低了工人高空作业的难度。

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