Fully grouted sleeve with built-in cone

Abstract

The invention discloses a full-grouting sleeve embedded with cones. The sleeve comprises a sleeve body (3), cones (7), a grouting port (4), a grout outlet (5), a limiting bolt (9) and rubber sealing rings (10), wherein the rubber sealing rings (10) are arranged at two ends of the sleeve body (3); the cones (7) are respectively and fixedly embedded in two ends of the sleeve body (3); in order to prevent the cones (7) from sliding in the sleeve body, the part of the sleeve body (3) which corresponds to two ends of the cones (7) is subjected to rolling treatment, and the inner diameter of the part of the sleeve body (3) is reduced; the grouting port (4) is formed in an outer wall at one end of the sleeve body (3); the grout outlet (5) is formed in an outer wall at the other end. The full-grouting sleeve has the advantages of simplicity in processing, low cost and the like, is particularly applied to connection of steel bars in member beams, posts and shear wall members, can be widely applied to an assembled concrete structure and has wide engineering application prospects.

Description

technical field [0001] The invention relates to a grout-anchored sleeve connector used for connecting steel bars between prefabricated concrete components, which belongs to the technical field of construction engineering, in particular to a fully grouted sleeve embedded with a cone. Background technique [0002] Prefabricated concrete structures, as a structural form in line with industrial production methods, have the advantages of fast construction speed, low labor intensity, less noise pollution and wet work, and easy control of product quality, and have been widely used in developed countries. The construction method of prefabricated assembly can effectively save resources and energy, improve the utilization rate of materials in realizing building energy saving and structural performance, overcome the restrictions of construction site and environmental conditions on on-site construction, reduce the number of on-site construction labor, reduce construction waste and Adver...

AI Technical Summary

Problems solved by technology

The above two types of sleeves have their own disadvantages. The cast iron (steel) sleeve has a bulky appearance and high technical requirements; although the machined sleeve has relatively high strength, it is still relatively heavy, and the material consumption is large, and the production cost is high. Low production efficiency

In summary, both the above two sleeves have disadvantages such as difficult processing, bulky form, and high cost.

[0006] Chinese patent document CN102071774A discloses a plug-in steel bar connecting sleeve and its construction method. The connecting sleeve has a tapered thread inside to play a shearing effect. The height of the tapered thread is small and the shearing effect is limited. Especially when this type of sleeve is used to connect steel bars with larger diameters, the disadvantage of poor shear resistance is more significant

[0007] Chinese patent document CN102900201A discloses a slurry-anchored steel bar connecting sleeve and its manufacturing mold and manufacturing method. The connecting sleeve is extruded through a specific mold to form convex ribs and grooves inside the sleeve body , when the cement grout is poured inside the sleeve body, the convex ribs and grooves play the role of shear resistance. The shear resistance effect of this shear key is obvious, but the processing is more complicated, time-consuming and labor-intensive, and the processing cost is high

[0008] Chinese patent document CN102116075A discloses a new type of cement grouting steel bar connecting joint. The connecting sleeve is a rolled section steel with a circular or polygonal shape, and the holes of the connecting sleeve are equal-diameter round holes, which are milled After the cement grouting material is poured inside the sleeve body, the raised ring rib connecting the inner wall of the sleeve and the ring at the hole end of the sleeve play a shearing role when the steel bar is stretched or compressed, and the shearing effect is obvious, but Sleeve processing is still relatively complicated, and the processing cost is high, which is not suitable for the promotion and application of actual engineering

[0009] In summary, the existing sleeves have disadvantages such as complicated processing technology, high material waste, and high processing costs, which are not conducive to the current development of housing industrialization and construction industrialization in China.

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