The basic requirements for bolted connections in grid structures are to ensure that the connections are strong, stable, able to withstand the design loads, and easy to install and maintain. Specific requirements include:
1. the selection of bolts should meet the design requirements, to ensure its strength, hardness and corrosion resistance.
2. the specification and size of the bolts should be consistent with the design requirements to ensure the bearing capacity and fastening effect.
3. the installation of the bolt should be in accordance with the relevant standards and norms to ensure the quality and safety of the connection.
4. the tightening force of the bolts should be appropriate, to avoid over-tightening or over-loosening leading to failure of the connection.
5. the pre-tensioning force of the bolt should be uniform, to avoid fracture caused by local stress concentration.
6. the anti-loosening measures of the bolt connection should be appropriate to ensure that the connection will not be loosened due to vibration or fatigue.
7. The bolt connection should be inspected and maintained frequently, and problems should be found and dealt with in time.
Through the implementation of the above basic requirements, it can ensure the stability and reliability of the bolt connection of the grid structure and improve the safety and service life of the structure. In engineering practice, engineers and construction personnel need to strictly abide by these requirements, do a good job of connection work, to protect the quality and safety of the project.
