Tensile and compression resistance steel bar connector and use method thereof

Abstract

The invention discloses a tensile and compression resistance steel bar connector and a using method thereof. The problems in the prior art that the connection stability of steel bars is poor and multiple sets of equipment are needed to realize on-site connection are solved. The tensile and compression resistance steel bar connector has the beneficial effects of being applicable to connection of steel bars with different diameters and improving the overall deformation resistance. According to the scheme, the tensile and compression resistance steel bar connector comprises a connecting plate andat least two pressing blocks, wherein the connecting plate is provided with a first clamping groove, a hinge shaft is arranged on the side, in the length direction, of the connecting plate, and the pressing blocks are provided with second clamping grooves; the hinge shaft sleeves one end of each pressing block, the end of each pressing block can rotate relative to the hinge shaft, the other end of each pressing block is connected with the connecting plate through a locking piece; adjacent pressing blocks are arranged at intervals with a set distance; and clamping of the steel bars is realizedthrough the cooperation of the first clamping groove and the second clamping grooves, so that the connection of two adjacent sections of the steel bars is further realized.

Description

technical field [0001] The invention relates to the field of reinforced concrete structure construction, in particular to a tension-compression-resistant steel bar connector and a use method thereof. Background technique [0002] In the construction of reinforced concrete structures, it is usually necessary to connect the steel bars. The connection methods of the steel bars mainly include lapping, mechanical connection, casing grouting connection and welding. The joint strength is generally higher than that of the steel bar base material, and it has the connection speed Fast, green and environmentally friendly, saving steel and other advantages. [0003] In the "Code for Design of Concrete Structures", it is stipulated that the longitudinally stressed steel bars of the axial tension and small eccentric tension members shall not use lap joints. When the diameter d>25mm of the tension steel bar and the diameter d>28mm of the compression steel bar, it is not suitable to ...

AI Technical Summary

Problems solved by technology

The disadvantage of welding is that it has high technical requirements for operators, and it is usually only suitable for the connection of steel bars of the same diameter.

[0011] In the prior art, the mechanical connection adopts the upper and lower two-piece structure, and the left and right sides of the two-piece structure are connected by bolts. Because the joint of the steel bar is subjected to tension, pressure and shear force, the stress situation is complicated, and the whole piece In order to ensure the balance of force, the whole piece has high requirements for manufacturing. Once the whole structure has one or more bumps, only the bumps will come into contact with the steel bars during the clamping process, resulting in insufficient clamping strength. , and the structural flexibility of the whole piece is poor, and there is also a requirement for a balanced clamping force, otherwise the clamping force will be poor, and it is not suitable for the connection of steel bars of different sizes, and the effect of clamping steel bars is poor. Only relying on bolts to achieve connection, the connection stability Poor, easy to cause disengagement of the connection between the two steel bars

[0012] To sum up, in the construction industry, traditional steel bar connection methods such as lap joints, welding and other connection methods cannot meet the needs of the rapid development of the construction industry in terms of connection quality, efficiency and operability.

The lap joint connection method can no longer be used for the connection of large-scale steel bars, and welding has many shortcomings, (such as unstable steel material, poor weldability, etc.; unstable power supply or poor welder level; construction period tightness and insufficient electric capacity; and climate influences such as wind, rain and cold; and construction plans for places with high fire protection requirements; the quality and speed of on-site connection of horizontal steel bars

) Welding quality cannot be guaranteed

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