Flange bolt connection has the advantages of simple and rapid installation, assembling and disassembling, high pressure bearing, good stress performance, safety and reliability. It is characterized by: 

(1) Improve the stress condition of the structure. The force of the friction type high-strength bolt connection is transmitted by the friction force on the surface of the steel plate, the area of the transmission force is large, the stress concentration phenomenon is improved, and the fatigue strength of the component is improved.

(2) The amount of bolts is small. The bearing capacity of high-strength bolts is large, a 40 boron steel with a diameter of d=22 mm, the bearing capacity of flange bolts is: and the shear strength of a common rivet with a diameter of 23 mm is: It can be seen that the bearing capacity of flange bolts is higher than that of rivets About 18%, under the same force, the number of high-strength bolts is relatively less than the number of rivets.

(3) Speed up the construction progress. The construction of high-strength flange bolts is simple and easy. For a worker who is not familiar with the construction of high-strength flange bolts, he can operate on the job as long as he has undergone simple training.

(4) It is not easy to loosen during the transportation of the steel structure, and the maintenance workload is reduced in use. If it is loose, it can be replaced individually without affecting the connection of the bolts around it.

(5) The construction labor conditions are good, and the bolt hole can be formed at one time in the factory, saving the process of secondary hole reaming.

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