Spiral rebar connector

Abstract

The invention discloses a spiral rebar connector, and belongs to the technical field of constructional engineering. The spiral rebar connector is characterized by comprising a spiral rebar and lap-joint rebars, wherein the spiral rebar and the lap-joint rebars are fixed; the number of the lap-joint rebars is not less than 1; to-be-connected rebars are connected through grouting in the spiral rebar; and the lap-joint rebars are fixed on the spiral rebar to guarantee tensile properties of the spiral rebar connector. The spiral rebar has a restraint effect on grouting materials, thereby enhancing the interaction of the rebars and the grouting materials. The spiral rebar connector enables connecting areas to easily deform and coordinate with surrounding materials through small resistant-lateral rigidity and by adopting a mounting method of area grouting. The spiral rebar connector has the advantages of simple process, low cost, reliable performance and the like, is particularly suitable to connect rebars between assembled components, can be widely applied to assembled concrete structures, and has a wide prospect of engineering application.

Description

technical field [0001] The invention relates to a grouting connector used for connecting steel bars between prefabricated concrete components, belonging to the technical field of construction engineering, in particular to a spiral steel bar connector. Background technique: [0002] Prefabricated concrete structure, as a structural form conforming to industrial production mode, has the advantages of fast construction speed, low labor intensity, less noise pollution and wet operation, and easy control of product quality, and has been widely used in countries all over the world. The construction method of prefabricated assembly can effectively save resources and energy, improve the utilization rate of materials in realizing building energy saving and enhancing structural performance, overcome the restrictions of construction site and environmental conditions on site construction, reduce the scale of on-site construction labor force, and ease construction The adverse impact of w...

AI Technical Summary

Problems solved by technology

[0004] The metal grouting sleeve is currently the most widely used fabricated structural connector. A large number of experiments and researches have proved that it has the characteristics of effectively transmitting axial loads; however, many recent academic studies have shown that due to the resistance of the metal sleeve itself The side stiffness is relatively large, and the existence of multiple connectors at the joints makes the connector area rigid, resulting in the incoordination between the deformation of the concrete in the sleeve area and the surrounding concrete, and most of the cracks generated by the deformation are concentrated on the concrete outside the connector area , cannot make full use of the mechanical properties of the material, which is not conducive to the overall seismic performance of the prefabricated structure

[0005] It can be seen that the current connection method of fabricated components still has certain technical defects. Therefore, a connector with good tensile performance and soft lateral stiffness is needed, which can make the steel bar meet the axial load under the earthquake load. The requirements of the load action can also coordinate the deformation of the components in the connection area

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