Construction method for improving installation precision of steel column: Fid-Bau Portal

Construction method for improving installation precision of steel column

JING CHENGQIAN / ZHENG HUIFEN / ZHANG WANG

The invention discloses a construction method for improving installation precision of a steel column. The construction method comprises the following steps that an upper section of steel column is hoisted to an installation position by hoisting equipment; then the horizontal position of the upper section of steel column is adjusted, so that the central axes of the upper section of steel column and a lower section of steel column are located on the same straight line; the vertical position of the upper section of steel column is adjusted; after the adjustment is in place, a connecting lug plate of the upper section of steel column and a hoisting lug plate of the lower section of steel column are connected through a connecting plate and a bolt, so that the position relation between the upper section of steel column and the lower section of steel column which are adjusted in place is fixed; and the upper section of steel column and the lower section of steel column are fixed through spot welding, then the hoisting equipment is unhooked, then the upper section of steel column and the lower section of steel column are welded in a butt joint manner, and after welding is finished, the connecting plate, the hoisting lug plate and the connecting lug plate are disassembled after the quality of a welding seam is detected to be qualified. According to the construction method, the accuracy of the installation elevation of the upper section of steel column can be effectively guaranteed, the weld joint distance between the upper section of steel column and the lower section of steel column is effectively controlled, the perpendicularity of the steel column can be effectively guaranteed, and the installation accuracy of the steel column is improved.

本发明公开了一种提高钢柱安装精度的施工方法，采用吊装设备吊装上段钢柱至安装位置；然后调节上段钢柱的水平位置，使得上段钢柱和下段钢柱的中轴线位于同一直线上；再调节上段钢柱的竖直位置；调节到位后用连接板和螺栓将上段钢柱的连接耳板和下段钢柱的起吊耳板连接起来，从而将调节到位的上段钢柱和下段钢柱之间的位置关系固定下来；点焊固定上段钢柱和下段钢柱，然后吊装设备脱钩，然后再对接焊接上段钢柱和下段钢柱，焊接结束后检测焊缝质量合格后再拆卸连接板、起吊耳板和连接耳板。该施工方法能有效保证上段钢柱安装标高的精确，有效控制上段钢柱和下段钢柱之间的焊缝间距，并能有效保证钢柱的垂直度，提高钢柱的安装精度。

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