PCCP steel wire joint and binding method thereof

Abstract

The invention relates to a PCCP prestress steel wire joint binding structure and a method, and in particular relates to a PCCP steel wire joint and a binding method thereof. The PCCP steel wire jointcomprises a binding wire for binding and a to-be-bound left steel wire and a to-be-bound right steel wire overlapped together. The binding wire comprises a left binding wire winding the to-be-bound left steel wire, a co-binding wire winding the overlapped section of the to-be-bound left steel wire and the to-be-bound right steel wire and a right binding wire winding the to-be-bound right steel wire. By implementing the technical scheme, the PCCP steel wire joint is simple in operating process, the tensile stress of the joint can reach the minimum ultimate strength of the steel wire, and the joint breaks out of the binding wire after a test. The problems that the joint is insecure, the binding wire is loose, slips and upwarps and the fracture after the test does not meet the specification and the like can be solved effectively, open of the joint is avoided, the wire withdrawal rate is reduced, the cost is saved and the work efficiency is improved.

Description

technical field [0001] The present application relates to a PCCP prestressed steel wire joint binding structure and method, in particular to a PCCP steel wire joint and a binding method thereof. Background technique [0002] According to the national standard GB / T 19685, the prestressed steel cylinder concrete pipe is wrapped with wire, and the steel wire joint must be bound when the steel wire is replaced; the standard requires that the tensile force that the steel wire joint can withstand when testing the joint should at least reach the limit of the steel wire The tensile strength standard value, and the fracture position must not appear within the bounding range. At present, steel wire joints are bound by binding steel wires from one end of the joint to the other end. After the winding is completed, the joints at both ends are reversely folded and bound together; after binding in this way, the joints are prone to looseness during the winding process. , The binding wire i...

AI Technical Summary

Problems solved by technology

At present, steel wire joints are bound by binding steel wires from one end of the joint to the other end. After the winding is completed, the joints at both ends are reversely folded and bound together; after binding in this way, the joints are prone to looseness during the winding process. , binding wire loosening, slipping, warping, and the fracture after the test does not meet the requirements, etc.

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