Hole Making Precision Control Of Steel Structure Engineering

There are many holes in steel structure chords, integral joints, gusset plates, splice plates and other members, and the connection relationship is complex. Its accuracy will directly affect the safety of the bridge site

The progress and quality will affect the geometric line after the completion of the bridge. Therefore, the accuracy of connecting 7L group is very high. Take the following measures:

l) The hole making process is dominated by the later hole method and supplemented by the first hole method to avoid the influence of welding deformation and improve the hole making accuracy.

2) High precision marking process and precision hole making process.

3) Design high-precision drilling process equipment, including drilling relic l template, drilling jig, etc.