What are the types of connection methods for steel structures?
The common connection methods for steel structures include welding, bolt connection (ordinary bolt connection, high-strength bolt connection), and riveting.
Design considerations for high-strength bolts
High strength bolt pre-stressed fastening is different from ordinary bolt fastening. Ordinary bolts are generally tightened with a wrench, and high-strength bolts require special equipment for operation. For diagonal steel beams, it is particularly important to pay attention to the minimum spacing of the tightening equipment, otherwise it may cause some high-strength bolts to be unable to be tightened.
Steel structural bolts are high-strength bolts and also a type of standard component. Good fastening performance, used in steel structures and engineering to enhance the fastening effect. On general steel structures, the required steel structural bolts are grade 8.8 or above, as well as grade 10.9 and grade 12.9, all of which are high-strength steel structural bolts.
The construction of steel structural bolts must be initially tightened and then finally tightened. The initial tightening of steel structural bolts requires the use of an impact type electric wrench or a torque adjustable electric wrench; And there are strict requirements for final tightening of steel structural bolts. Final tightening of torsion shear type steel structural bolts must use torsion shear type electric wrenches, and final tightening of torque type steel structural bolts must use torque type electric wrenches
The large hexagonal steel structural bolt consists of one bolt, one nut, and two washers.
Twist shear steel structural bolts consist of one bolt, one nut, and one washer.
Steel structural bolts are divided into torsion shear high-strength bolts and large hexagonal high-strength bolts. Large hexagonal high-strength bolts belong to the high-strength grade of ordinary screws, while torsion shear high-strength bolts are an improved type of large hexagonal high-strength bolts for better construction
