Roof steel structure
Lifting Technology and Construction Organization I. Lifting Process Orientation-Calibration-Pillar Base Bolt Installation-Line-Pillar Installation-Steel Beam Installation-Purlin Installation-Painting-Completion
II. Installation Technology of Steel Columns
1. Re-test the foundation, including the exposed length of anchor bolt, the displacement deviation of anchor center line to datum line, the distance between anchor bolts, and the elevation of foundation. The unqualified foundation can be hoisted only after treatment.
2. In order to control the installation elevation of the column, the position of 500 mm is drawn on the visible section of the column in advance so as to fine-tune and correct the elevation during installation. In order to install the steel column on the basis of qualified re-testing, the column is first bundled with a single wire rope, and the location of the hanging point is 1/3 of the length of the column from the end of the column. The column is lifted by rotating method, and the steel column is lifted and sent to the installation position.