Steel Column Connection (Construction Method Of Steel Structure-Part 6)

Weld the nodes at the top of the column, beam first, then the nodes at the bottom of the column, beam, and finally the nodes in the middle of the column beam.

Column base plate block installation and secondary grouting

Because of the need to adjust the column height in steel column installation, the mat block is usually placed under the head plate at the bottom end of the column, and the block size.

Only after the main steel structure hoisting correction is completed can grouting be performed. To avoid structure displacement caused by other reasons, grouting materials should be used of fine stone concrete, to make complete contact with the column base plate and foundation, grouting concrete grade is higher than the column concrete grade, and the grouting concrete grade is higher than column concrete grade. Before grouting, remove any excessively high parts of the concrete surface, maintain a grouting thickness of at least 4cm, remove fine material, grease, dirt, and other harmful substances from the concrete surface, and maintain an appropriate roughness. One end and both sides of the template must also be higher than the plate, with enough space to insert a wooden or steel bar. If the grouting material is mixed by hand, the lack of liquidity will cause water to increase, posing a risk of contraction. Once grouting begins, it must be a continuous operation until the grout is removed from the surrounding area. The grouting material must be started from one side and cannot be interrupted before completion. The civil engineering construction team completes the grouting work after it has been kept moist for at least seven days.