Definition of reinforcement mechanical connection：
The method of connecting the force in one reinforcing bar to the other by means of the mechanical bite of the reinforcing bar and the connecting piece or the pressure bearing action of the end face of the reinforcing bar.
The current mechanical connection methods mainly include tapered threads, straight threads, and extruded sleeves, all of which require the use of reinforced sleeves.
1、The sleeve extrusion joint is a joint formed by the plastic force of the steel sleeve of the connector and the ribbed steel being tightly engaged by the extrusion force. There are two forms of connection, radial compression and axial compression connections. Due to its superior performance, the radial extrusion connection technology has been promoted and used in large-scale projects such as nuclear power plants, railways, bridges, subways, and house construction.
2、Taper thread joints are joints formed by specially designed tapered threads of steel bars and tapered threads of connectors. The birth of taper thread connection technology makes up for the deficiencies of the sleeve extrusion connection technology. Conical thread heads can be completely pre-fabricated, short live connection time, just use a torque wrench, No need to move equipment and pull wires, Well received by all construction companies. Because the tapered thread connection technology has the characteristics of quick construction and low joint cost, it has been widely used since it was promoted in the early 1990s. However, because the quality of the tapered thread joint is not stable enough, it is gradually replaced by a straight thread joint.
3、Straight thread connection joints are the latest international trends in the connection of steel bars in the 1990s. The quality of the joints is stable and reliable, and the connection strength is high. It can be compared with sleeve extrusion joints, and it also has the advantages of convenient and rapid construction of tapered thread joints. At this point, the emergence of straight thread connection technology has brought a qualitative leap to the rebar connection technology. At present, our country’s straight thread connection technology presents a scene of blooming flowers, and there are many forms of straight thread connection. Straight thread joints mainly include upright straight thread joints and rolled straight thread joints. These two processes use different methods of processing to enhance the bearing capacity of the reinforcing head end thread and achieve the strong purpose of joints and reinforcing bars.
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Post time: Jun-08-2018