CN209958617U - Novel full grout sleeve and steel sleeve grout attach fitting - Google Patents

Abstract

The utility model relates to a building material's technical field especially relates to a novel grout sleeve entirely and steel sleeve grout attach fitting. The application provides a novel grout sleeve entirely, grout sleeve entirely includes: the corrugated sections are arranged on the outer surfaces of the cylinder walls at the two ends of the cylinder body; grouting openings are formed in the cylinder walls at the two ends of the cylinder body; the length ratio of the corrugation depth of the corrugation section to the outer diameter of the cylinder is 0.04-0.15, the length ratio of the single corrugation length of the corrugation section to the outer diameter of the cylinder is 0.8-1.5, and the length ratio of the crest space length of the corrugation section to the outer diameter of the cylinder is 0.8-1.5. The utility model aims at providing a novel grout sleeve and steel sleeve grout attach fitting entirely, solve the technical problem that the grout material of rib department and rolling groove grout sleeve's inner groovy department produces stress concentration and forms the weak link in the current nodular cast iron grout sleeve.

Description

Novel full grout sleeve and steel sleeve grout attach fitting

Technical Field

The utility model relates to a building material's technical field especially relates to a novel grout sleeve entirely and steel sleeve grout attach fitting.

Background

The steel bar sleeve grouting connection technology is a steel bar connection technology aiming at prefabricated components, wherein ribbed steel bars are inserted into a grouting sleeve with an inner cavity of a concave-convex surface, and a special high-strength cement-based grouting material is poured into a gap between the sleeve and the steel bars, and the steel bars are anchored in the sleeve after the grouting material is solidified. The technology is characterized in that a grouting sleeve is embedded in a concrete component, grouting material is injected into the sleeve from the outside of a prefabricated component through a grouting pipe on an installation site, and the connection of the reinforcing steel bars of the prefabricated component is completed.

The steel bar sleeve grouting connecting joint is composed of three materials, namely a steel bar, a grouting sleeve and grouting material, wherein the grouting sleeve is divided into a half grouting sleeve and a full grouting sleeve. The grouting connection construction process of the steel sleeve mainly comprises the following steps: the prefabricated part completes the connection of the sleeve and the steel bar, the installation and fixation of the sleeve on the template and the connection of the slurry inlet and outlet pipeline and the sleeve in a factory, and completes the installation of the part, the sealing of the grouting cavity, the mixing of grouting material and water and the grouting of the sleeve in a building construction site.

At present, the grouting sleeve machined by ductile cast iron is generally used in the market, the production cost is high, the selling price is also high, and the popularization and the application of the fabricated concrete structure building are restricted to a certain extent. The grouting sleeve is used as a main mode for connecting steel bars in a prefabricated assembly structure, is widely applied to an assembly type concrete structure, is usually cast by nodular cast iron, and has the structure shown in figure 1, the inner wall of the nodular cast iron grouting sleeve is provided with a plurality of inner ribs, the inner section of the sleeve has sudden change along the axis direction, and in the practical engineering application, grouting materials at the positions of the ribs easily generate great stress concentration to form weak links, so that the grouting materials at the inner ribs are easily crushed in the practical application. In addition, a grouting sleeve with a groove formed by rolling is also available, and a rolling groove is rolled on a steel pipe, as shown in the structural diagram 2, the groove of the rolling groove grouting sleeve is narrow and has a function similar to that of an inner rib, and the grouting material at the position of an inner groove is easy to generate large stress concentration. Under the effect of repeated load, the concrete is easily crushed due to stress concentration at the inner rib of the nodular cast iron and the inner groove of the rolling groove grouting sleeve, so that the bonding force between the steel bar and the sleeve is reduced, and the durability of the whole sleeve structure is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel grout sleeve and steel sleeve grout attach fitting entirely, solve the technical problem that the grout material of rib department and rolling groove grout sleeve's inner groovy department produces stress concentration and forms the weak link in the current nodular cast iron grout sleeve.

In view of this, the present application provides a novel full grout sleeve, the full grout sleeve includes:

the corrugated sections are arranged on the outer surfaces of the cylinder walls at the two ends of the cylinder body;

grouting openings are formed in the cylinder walls at the two ends of the cylinder body;

wherein the length ratio of the corrugation depth of the corrugation section to the outer diameter of the cylinder body is 0.04-0.15,

the length ratio of the single wave length of the wave section to the outer diameter of the cylinder is 0.8-1.5,

the ratio of the length of the wave crest space of the corrugated section to the length of the outer diameter of the cylinder body is 0.8-1.5.

Preferably, the length of the outer diameter of the cylinder is 40-90 mm.

Preferably, the corrugation depth of the corrugation section is 3-10 mm.

Preferably, the single wave length of the wave band is 20-80 mm.

Preferably, the distance between peaks of the corrugated sections is 20-120 mm.

Preferably, the cylinder is a high-strength seamless steel pipe.

Preferably, the corrugated section is obtained by roll forming the cylinder.

The utility model also provides a steel bar sleeve grouting connecting joint, which comprises steel bars, the novel full grouting sleeve and grouting material;

the reinforcing steel bar is fixed in the novel full grouting sleeve through the grouting material.

Preferably, the reinforcing bars are fixed in the corrugated section.

Preferably, the reinforcing steel bar is a ribbed reinforcing steel bar.

According to the technical scheme, the embodiment of the application has the following advantages:

the utility model provides a novel full grout sleeve's both ends are the ripple section through the roll extrusion formation, and there is very big difference with present nodular cast iron grout sleeve inner rib department and rolling groove grout sleeve in size and atress performance. The utility model provides a novel grout sleeve entirely improves grout sleeve durability under the effect of repeated load. Novel grout sleeve is through carrying out cold roll extrusion to the seamless steel pipe that excels in, and the ripple section is located the roll extrusion at the steel pipe both ends through special mould, and its processing technology is comparatively simple, and is efficient, can reduce telescopic manufacturing cost by a wide margin, and the telescopic ripple section of novel full grout of this application not only has the function of rib in the tradition, and to a great extent improves the mechanical properties of grout sleeve under the stress state repeatedly simultaneously, improves telescopic durability. The novel full grouting sleeve is processed by a relatively simple processing technology, so that the production cost is reduced, the price of the grouting sleeve is reduced, and the popularization and application of the prefabricated concrete structure building are promoted; meanwhile, the technical problem that grouting materials at the inner rib of the existing nodular cast iron grouting sleeve and the inner groove of the rolling groove grouting sleeve generate stress concentration to form a weak link is solved, and the stress of the grouting materials is more uniform.

Drawings

FIG. 1 is a structural diagram of a grouting connection joint of a reinforced nodular cast iron grouting sleeve in the prior art;

FIG. 2 is a structural diagram of a grouting connection joint of a reinforcing steel bar rolling groove grouting sleeve in the prior art;

fig. 3 is a structural view of a novel fully grouted sleeve according to an embodiment of the present application;

FIG. 4 is a structural view of the corrugated section of the novel fully grouted sleeve of FIG. 3;

FIG. 5 is a schematic diagram of a roll process of the novel fully grouted sleeve of FIG. 3;

FIG. 6 is a schematic view of a roll process of the novel fully grouted sleeve of FIG. 3;

fig. 7 is a structural view of a grout joint for reinforcing bar sleeves according to an embodiment of the present application;

FIG. 8 is a block diagram of a prior art rolled slot grout sleeve;

fig. 9 is a structural view of a conventional ductile iron grout sleeve of the prior art;

FIG. 10 is a force analysis diagram of a novel fully grouted sleeve according to an embodiment of the present application;

FIG. 11 is a force analysis graph of a rolled slot grout sleeve of the prior art;

FIG. 12 is a force analysis chart of a conventional nodular cast iron grout sleeve of the prior art;

wherein, the reference numeral, barrel 1, ripple section 2, grout mouth 3, grout material 4, reinforcing bar 5, the external diameter D of barrel, ripple degree of depth a, single ripples L₁Wave peak L₂。

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

It should be understood that this application is applied to in the construction, please refer to fig. 3, and fig. 3 is a novel structure diagram of full grout sleeve of this application embodiment, as shown in fig. 3, the embodiment of the utility model provides a novel full grout sleeve, include: the corrugated section 2 is arranged on the outer surface of the cylinder wall at two ends of the cylinder 1; the cylinder walls at the two ends of the cylinder body are provided with grouting ports 3; wherein the length ratio of the corrugation depth of the corrugation section to the outer diameter of the cylinder is 0.04-0.15, the length ratio of the single-corrugation length of the corrugation section to the outer diameter of the cylinder is 0.8-1.5, and the length ratio of the crest interval length of the corrugation section to the outer diameter of the cylinder is 0.8-1.5.

Specifically, in this embodiment, the length ratio of the corrugation depth of the corrugation segment to the outer diameter of the cylinder is 0.138, the length ratio of the single corrugation length of the corrugation segment to the outer diameter of the cylinder is 1.034, and the length ratio of the crest pitch length of the corrugation segment to the outer diameter of the cylinder is 1.207.

Further, referring to fig. 4, fig. 4 is a structural diagram of a corrugated section of the novel full grouting sleeve of fig. 3, according to current building regulations, the length of the outer diameter D of the cylinder body is 40-90 mm; the corrugation depth a of the corrugation section is 3-10 mm; single wave L of corrugated section₁The length is 20-80 mm; wave crest L of wave section₂The spacing is 20-120 mm.

Specifically, in this embodiment, the length of the outer diameter D of the cylinder is 58 mm; the corrugation depth a of the corrugated section is 8mm, and the single wave L of the corrugated section₁60mm in length and the wave crest L of the wave section₂The pitch length is 70 mm.

For ease of understanding, referring to fig. 5-6, fig. 5 is a schematic diagram of the rolling process of the novel fully grouted casing of fig. 3; fig. 6 is a schematic view illustrating a rolling process of the novel full grout sleeve of fig. 3. The utility model discloses barrel 1 is high strength seamless steel pipe, and high strength seamless steel pipe accords with the requirement of building strength. The utility model discloses the barrel also can be with the similar barrel of high strength seamless steel pipe, the embodiment of the utility model provides a not enumerate one by one.

For easy understanding, referring to fig. 5-6, the corrugated section 2 is formed by rolling the cylinder 1, specifically, the high-strength seamless steel tube is placed in the gap between two stable driven rollers, and the driving rolling wheel moves along the moving direction of the driving rolling wheel to roll the high-strength seamless steel tube into the corrugated section.

The utility model provides a novel grout sleeve entirely, the novel grout sleeve entirely of this application carries out the single roll extrusion to the barrel through roller press, forms the ripple section for replace prior art's grout telescopic inner rib, realize the function the same with inner rib, more traditional way simultaneously, the novel grout sleeve processing technology entirely of this application's cost is lower, it has great economic advantage to compare the ball-milling cast iron grout sleeve, is favorable to the popularization and the application of assembled concrete building structure. The utility model provides a novel grout sleeve entirely passes through the roll forming through the seamless steel pipe that excels in, and the cost has more traditional nodular cast iron grout sleeve to descend by a wide margin.

Further, please refer to fig. 7, fig. 7 is a structural diagram of a steel bar sleeve grouting connection joint according to an embodiment of the present application, and an embodiment of the present invention provides a steel bar sleeve grouting connection joint, which includes a steel bar 5, a novel full grouting sleeve according to the above embodiment, and a grouting material 4; the reinforcing steel bar 5 is fixed in the novel full grouting sleeve through the grouting material 4.

Further, the reinforcing bars 5 are fixed in the corrugated sections 2.

Further, the reinforcing bars 5 are ribbed reinforcing bars.

The present application designs a novel full grout sleeve, please refer to fig. 3, 8-12, fig. 3 is a structural diagram of the novel full grout sleeve of the embodiment of the present application, fig. 8 is a structural diagram of a rolling groove grout sleeve of the prior art, and fig. 9 is a structural diagram of a conventional nodular cast iron grout sleeve of the prior art. The novel full grouting sleeve of the application abandons the adoption of inner ribs and rolling to form rolling grooves, and adopts corrugated sections for replacement, as shown in fig. 10-12, fig. 10 is a stress analysis diagram of the novel full grouting sleeve of the embodiment of the application; FIG. 11 is a force analysis graph of a rolled slot grout sleeve of the prior art; fig. 12 is a stress analysis diagram of a conventional nodular cast iron grouting sleeve in the prior art, and from a mechanical perspective, the section of the corrugated section changes excessively and smoothly along the axial direction, and compared with a conventional inner rib, the section does not change suddenly, so that excessive stress concentration can be avoided, and the stress performance of a grouting material of the corrugated section is greatly improved; when the grout sleeve received great axial load, rolling groove grout sleeve was because rolling groove is less with the contact surface of grout material, and the contained angle of grout material stress surface and sleeve axis direction is great, leads to the grout material of here to receive very big stress concentration, produces the crack easily, and under rolling groove grout sleeve received the condition of repeated load, the crack will develop very fast. The stress condition of the grouting material at the inner rib of the traditional nodular cast iron grouting sleeve is similar. And the novel full grout sleeve of this application embodiment is visible when receiving great axial load, because the ripple section is very big with the contact surface of section of thick bamboo wall and ripple section, and the contained angle of stress surface and axis direction is less, ripple section grout material can not produce stress concentration, and the atress is more even, can effectively restrain fissured production, under the novel full grout sleeve of this application embodiment receives the condition of repeated load, because the crack develops more slowly, the telescopic durability of grout obtains improving. Simultaneously because there is the ripple section at this application embodiment's a novel full grout sleeve both ends, compare traditional sleeve surface and be the cylinder size basically, can improve the sleeve and its mechanical interlock of concrete on every side to increase the sleeve and with the wholeness of concrete member.

The terms "first," "second," "third," "fourth," and the like in the description of the application and the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims (10)

1. The utility model provides a novel grout sleeve entirely, its characterized in that includes:

the corrugated sections are arranged on the outer surfaces of the cylinder walls at the two ends of the cylinder body;

grouting openings are formed in the cylinder walls at the two ends of the cylinder body;

wherein the length ratio of the corrugation depth of the corrugation section to the outer diameter of the cylinder body is 0.04-0.15,

the length ratio of the single wave length of the wave section to the outer diameter of the cylinder is 0.8-1.5,

the ratio of the length of the wave crest space of the corrugated section to the length of the outer diameter of the cylinder body is 0.8-1.5.

2. The novel fully grouted sleeve of claim 1, wherein the length of the outer diameter of said barrel is 40-90 mm.

3. The new fully grouted sleeve of claim 1, wherein said corrugated section has a corrugation depth of 3-10 mm.

4. The novel fully grouted sleeve of claim 1, wherein said corrugated section has a single corrugation length of 20-80 mm.

5. The novel fully grouted sleeve of claim 1, wherein said corrugated sections have a peak to peak spacing of 20-120 mm.

6. The novel fully grouted sleeve of claim 1, wherein said barrel is a high strength seamless steel tube.

7. The novel fully grouted sleeve of claim 1, wherein said corrugated section is formed by roll forming said barrel.

8. A steel bar sleeve grouting connection joint, which is characterized by comprising steel bars, the novel full grouting sleeve of any one of claims 1 to 7 and grouting material;

the reinforcing steel bar is fixed in the novel full grouting sleeve through the grouting material.

9. A reinforced grout joint according to claim 8, wherein the reinforcing steel is fixed in the corrugated section.

10. A reinforced grout joint according to claim 9, wherein the reinforcing bars are ribbed reinforcing bars.

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