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How to deal with the deviation of the anchor bolts?

Update:12-08-2020
Summary:

In steel structure buildings, anchor bolts can be divid […]

In steel structure buildings, anchor bolts can be divided into fixed anchor bolts, movable anchor bolts, expansion anchor anchor bolts and bonded anchor bolts. According to different shapes, it is divided into: L-shaped embedded bolts, 9-shaped embedded bolts, U-shaped embedded bolts, welded embedded bolts, and bottom plate embedded bolts. However, during installation, the anchor bolts are prone to deviations in verticality. If the anchor bolts are deflected during the installation process, what measures should we take to correct them?

1. After inspection and measurement, if the deviation of the individual verticality of the anchor bolt is very small, it should be adjusted when the concrete curing strength reaches 75%. You can use a hammer to knock and hold it to the correct vertical position.

2. For anchor bolts that are displaced or do not know that the fork is too large, you can use a steel chisel around it to find the appropriate depth of the concrete and then use gas cutting to cut it off. Use the specified length, diameter, and the same material after processing. Lap weld the upper section, and take corresponding compensation measures to achieve the specified position and verticality.

3. For some individual anchor bolts with relatively large displacement deviations, in addition to the lap welding method, under allowable conditions, the sidewall of the base plate aperture can also be enlarged to adjust the displacement deviation. After adjustment It should be covered with a self-made thick plate washer and welded for reinforcement.

4. Before the reserved anchor bolt hole is grouted, if the position in a reserved hole in Luoshan Town is too large, the measures of enlarging the reserved hole wall can be adopted to adjust the accurate position of the anchor bolt.

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