How to install steel structure beams in high-rise buildings?

Steel structure building steel beam installation

1. When installing the steel structure beams of high-rise buildings, the main girder adopts special clamps. In order to prevent the high altitude from falling due to wind or collision objects, the clamps are placed on both sides of the steel beam end 500mm.

2. There are 2-story, 3-story, and 4-story beams in a section of a high-rise steel structure building. In principle, the vertical components are installed piece by piece from bottom to top. Since the upper part and the surrounding area are in a free state, it is easy to install and measure to ensure quality. It is customary for the steel beams of the same column to expand symmetrically from the middle span to both ends. For the steel beams of the same span, the upper beams are installed first, and then the middle and lower beams are installed.

3. When installing and correcting the main beam between the columns, the columns should be stretched, and the measurement must be tracked and corrected, and the deviation value should be reserved, and the welding shrinkage of the joints should be reserved. At this time, the internal force generated by the column will disappear after the weld seam shrinks after welding. 

4. Steel structure building columns have column joints and welding of beam and column joints, which should be coordinated with each other. Generally, the top beam of a column can be welded first, and then the joints between beams and columns of each layer can be welded from bottom to top. The joints between columns can be welded first or last.

5. The secondary beam can be hung in three layers.

6. For the levelness of both ends of the same root, the allowable deviation (L/1000) + 3, the maximum does not exceed 10. If the levelness of the steel beam exceeds the standard, the main reason is that there is an error in the position of the connecting plate or the position of the screw hole, and it can be handled by changing the connecting plate or plugging the welding hole to make a new hole.