CN212001936U

CN212001936U - Grouting sleeve structure

Info

Publication number: CN212001936U
Application number: CN202020379706.4U
Authority: CN
Inventors: 钱玉龙
Original assignee: Suzhou Planning & Design Research Institute Co ltd
Current assignee: Suzhou Planning & Design Research Institute Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-11-24
Anticipated expiration: 2030-03-23

Abstract

The utility model relates to a grout sleeve structure, sleeve including vertical setting, the sleeve includes outer sleeve and inner skleeve, the outer sleeve is established in the outside of inner skleeve with the fixed cover of axle, the both ends of outer sleeve all are provided with the inserted hole, the outer sleeve has been close to the side of lower extreme inserted hole and has been seted up the grout mouth, grout mouthful department is connected with the grout pipe, the side that the outer sleeve is close to the upper end inserted hole has seted up out the grout mouth, grout mouth department is connected with out the grout pipe, grout mouth and play grout mouth are located the vertical homonymy of outer sleeve, two it all is provided with the sealing member to insert mouth department, be provided with protruding rib on the inner wall of inner skleeve, protruding rib is the heliciform setting along the length direction of inner sklee. The utility model discloses have convenient processing, the more closely knit effect of grout.

Description

Grouting sleeve structure

Technical Field

The utility model belongs to the technical field of the technique of assembled concrete connection element and specifically relates to a grout sleeve structure is related to.

Background

At present, with the requirement of industrial development of buildings, the fabricated concrete is gradually developed. The grouting sleeve generally plays a role in connecting the steel bars in the two assembled concrete members, and adopts a mechanical mode of internal sizing material anchoring and sleeve force transmission to connect the longitudinal steel bars. The assembly type building construction process is energy-saving, reduces the pollution to the environment and greatly improves the production quality and safety level, so the assembly type building construction method is gradually applied to the building industry.

The prior Chinese utility model with the publication number of CN207892135U discloses an assembled semi-grouting sleeve, which comprises a hollow sleeve body, wherein one end of the sleeve body is provided with a conical extension section for connecting with a prefabricated end steel bar, the other end is an insertion end for inserting the assembly end steel bar, the sleeve body is provided with a grouting opening and a grout outlet, the grouting opening is positioned on the sleeve body and close to the insertion end, the grout discharging opening is positioned on the sleeve body and close to the conical extension section, a plug for fixing the prefabricated end reinforcing steel bars is nested in the conical extension section, an inner support sleeve for supporting and positioning the assembly end reinforcing steel bars and a limit baffle for limiting the assembly end reinforcing steel bars are fixed in the sleeve body, the inner wall of the inner support sleeve is provided with a plurality of semicircular shear keys at intervals along the axial direction, the inner support sleeve is provided with a via hole communicated with the grouting hole, and the limit baffle is positioned in the sleeve body and close to the grout outlet. The utility model discloses can greatly strengthen tensile strength, promote whole bearing capacity, guarantee building construction quality, improve performance.

The above prior art solutions have the following drawbacks: 1. although the shear bond can enhance the tensile strength and improve the construction quality, the common materials of the sleeve at present are nodular cast iron and a seamless steel pipe, the nodular cast iron is cast, the plasticity is high, the processing of the shear groove on the inner wall of the sleeve is easier but the manufacturing cost is higher, the manufacturing cost of the seamless steel pipe is low, but the plasticity is poor, and the processing of the inner shear groove is difficult; 2. in grout sleeve grout in-process, the shear force groove can provide certain shear capacity when the shaping, but the shear force groove can produce certain hindrance to the flow of thick liquids in the sleeve to because the thick liquids have certain viscidity, its mobility in the sleeve can't accurate control, can lead to the thick liquids in the grout in-process to fill the condition that closely knit degree is not enough in the sleeve to appear, can influence the anchor effect of thick liquids to the reinforcing bar finally, thereby reduce the fastening nature of bar connection.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a grout sleeve structure, it has the lower and convenient processing of processing cost, the more closely knit effect of grout.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a grout sleeve structure, includes the sleeve of vertical setting, the sleeve includes outer sleeve and inner skleeve, the outer outside at the inner skleeve is established to the coaxial fixed cover of outer sleeve, the both ends of outer sleeve all are provided with the inserted hole, the side that the outer sleeve is close to the lower extreme inserted hole has seted up the grout mouth, grout mouth department is connected with the grout pipe, the side that the outer sleeve is close to the upper end inserted hole has seted up out the grout mouth, grout mouth department is connected with out the grout pipe, grout mouth and play grout mouth are located the vertical homonymy of outer sleeve, two it all is provided with the sealing member to insert mouth department, be provided with protruding rib on the inner wall of inner skleeve, protruding rib is the heliciform setting along the length direction of.

By adopting the technical scheme, on one hand, the sleeve is divided into a double-layer structure of the inner sleeve and the outer sleeve, when in processing, the inner sleeve is made of a material which is easy to process the raised rib grains, and the raised rib grains are processed on the inner side wall of the inner sleeve, the material selected by the inner sleeve can be thin-wall steel or FPR material, the plasticity is strong, the processing cost is low, the outer sleeve can continue to adopt seamless steel pipes, and the strength of the sleeve can be ensured while the processing is convenient only by fixedly sleeving the outer sleeve on the outer side wall of the inner sleeve; on the other hand, including telescopic inside wall along its length direction processing out spiral helicine protruding rib line, protruding rib line can play reinforcing sleeve tensile strength's effect equally to form spiral helicine guiding gutter between the protruding rib line, play certain direction and exhaust effect to thick liquids at the grout in-process, make thick liquids distribute more evenly closely knit, and then increase the anchor effect of thick liquids to the reinforcing bar, improve the anchor quality.

The present invention may be further configured in a preferred embodiment as: the inner sleeve and the outer sleeve are fixedly connected through an epoxy resin glue layer.

Through adopting above-mentioned technical scheme, the molecular structure of epoxy glue film is very compact intensive, and the cohesion is very strong for its mechanical properties is very high, can guarantee the stability of being connected between inner skleeve and the outer sleeve, and epoxy glue low price, the adhesion technology is also simple, has made things convenient for the course of working.

The present invention may be further configured in a preferred embodiment as: the inner sleeve is provided with a plurality of sections along the axial direction of the outer sleeve, and the two adjacent sections of the inner sleeve are attached to each other.

Through adopting above-mentioned technical scheme, the sleeve can receive certain transverse shear after vertical member connection is accomplished, and the outer sleeve can produce small deformation at the atress in-process, sets up the inner skleeve into the multistage small deformability that has improved the inner skleeve, has avoided driving the inner skleeve to take place deformation when the outer sleeve takes place deformation, and then has caused the damage of inner skleeve material.

The present invention may be further configured in a preferred embodiment as: the tip that the inner skleeve is close to the sealing member is provided with solid fixed ring, runs through solid fixed ring's center department is provided with the shrinkage pool, the shrinkage pool sets up to the round platform form, the shrinkage pool is greater than the other end diameter near the one end diameter of sealing member.

Through adopting above-mentioned technical scheme, before the reinforcing bar installation, during the reinforcing bar part of upper end is pre-buried into the component of top, the lower extreme is pegged graft into in the sleeve, only leans on top component and sealing member not too ideal to the fixed action of reinforcing bar, and solid fixed ring has certain fastening effect to the reinforcing bar of top, avoids taking place axial small displacement error at the reinforcing bar in the installation for it is more stable in the reinforcing bar installation, improves the anchor effect.

The present invention may be further configured in a preferred embodiment as: the inner wall of the inner sleeve and the flow guide groove are both covered with smooth non-stick coatings.

Through adopting above-mentioned technical scheme, at the grout in-process, mobility is better when thick liquids flow in telescopic inside wall and the guiding gutter including, avoids thick liquids adhesion on telescopic inside wall including for thick liquids are at first to be filled the part that is located the below, further makes the thick liquids more closely knit, and then improves the anchoring ability of thick liquids.

The present invention may be further configured in a preferred embodiment as: grout outlet and grout outlet are all provided with and hinder back the board.

Through adopting above-mentioned technical scheme, prevent that the board dashes into interior telescopic thick liquids and form certain effect of blockking, and then the effectual backward flow phenomenon that has reduced thick liquids at the grout in-process for thick liquids including the sleeve turn to pack more closely knit, improved the anchor ability of thick liquids.

The present invention may be further configured in a preferred embodiment as: and a slow seepage plate for slowing down the outflow of the slurry is arranged in the slurry outlet pipe.

Through adopting above-mentioned technical scheme, to vertical member's connection, when advancing interior sleeve with the thick liquids filling from below grout mouthful, thick liquids are by in lower supreme filling interior sleeve gradually, thick liquids are filled out the grout mouthful back, it is difficult to fill the thick liquids at the position that is located the grout mouthful top to the inner skleeve, slowly ooze the speed that the board has slowed down thick liquids and has oozed from grout mouthful, and then make thick liquids can be with the more abundant of sleeve intussuseption, in-process at grout mouthful continuation inside grout, slowly ooze the board and have certain tamping action to thick liquids simultaneously, make thick liquids fill more comprehensively in the sleeve, further improved the closely knit nature of thick liquids filling.

The present invention may be further configured in a preferred embodiment as: the outer surface of the outer sleeve is coaxially provided with a plurality of annular bulges, and the annular bulges are uniformly distributed along the length direction of the outer sleeve.

By adopting the technical scheme, the annular protrusion increases the contact area between the outer sleeve and the concrete precast block, so that the occlusion force between the outer sleeve and the concrete precast block is improved, and the connection quality of the outer sleeve is improved.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the sleeve is arranged into a two-layer structure of the outer sleeve and the inner sleeve, and the spiral raised ribs are arranged in the inner sleeve, so that on one hand, the processing degree is convenient, on the other hand, the spiral raised ribs enhance the biting force with the slurry, the anchoring capability of the slurry is improved, and the flow guide grooves are formed among the raised ribs to enhance the fluidity of the slurry so as to improve the compactness of the slurry;

2. through hindering back board, slowly oozing the board, slowed down the backward flow of thick liquids instillation in-process and spilled over speed, improved the closely knit degree of thick liquids.

Drawings

Fig. 1 is a schematic view of the overall construction of a grout sleeve;

fig. 2 is a sectional view along a vertical section in the middle of a vertical grout sleeve.

In the figure, 1, a sleeve; 11. an outer sleeve; 12. an inner sleeve; 2. an insertion opening; 3. grouting ports; 31. grouting pipes; 4. a pulp outlet; 41. a pulp outlet pipe; 5. a seal member; 6. raised ribs; 61. a diversion trench; 7. an epoxy resin adhesive layer; 8. a fixing ring; 81. concave holes; 9. a block back plate; 10. a slow seepage plate; 15. an annular protrusion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, in order to disclose a grouting sleeve structure of the present invention, the grouting sleeve structure comprises a vertically arranged sleeve 1, the sleeve 1 comprises an outer sleeve 11 and an inner sleeve 12, the length of the inner sleeve 12 is the same as that of the outer sleeve 11, and both ends of the outer sleeve 11 are provided with insertion holes 2; the side surface of the outer sleeve 11 close to the lower end insertion opening 2 is provided with a grouting opening 3, the grouting opening 3 penetrates through the inner sleeve 12 to be arranged, the grouting opening 3 is horizontally connected with a grouting pipe 31, the side surface of the outer sleeve 11 close to the upper end insertion opening 2 is provided with a grout outlet 4, the grout outlet 4 is horizontally connected with a grout outlet pipe 41, the grout outlet 4 penetrates through the inner sleeve 12 to be arranged, and the grouting opening 3 and the grout outlet 4 are positioned on the same vertical side of the outer sleeve 11; the inner sleeve 12 is made of FPR materials, preferably carbon fiber materials, the outer sleeve 11 is made of seamless steel tubes, the outer sleeve 11 is coaxially and fixedly sleeved on the outer side of the inner sleeve 12, specifically, the outer sleeve 11 and the inner sleeve 12 are fixedly connected through an epoxy resin glue layer 7, sealing elements 5 are arranged at two insertion holes 2, the sealing elements 5 are rubber plugs, and the edges of the rubber plugs are arranged in a wave-saw shape.

Referring to fig. 2, be provided with protruding rib line 6 on inner skleeve 12's the inner wall, protruding rib line 6 is the heliciform setting along inner skleeve 12's length direction, form guiding gutter 61 between the adjacent protruding rib line 6, inner skleeve 12 is close to top sealing member 5 position and is provided with solid fixed ring 8, gu fixed ring 8 sets up to flat discoid, gu fixed ring 8's lateral wall fixed connection is on inner skleeve 12's inner wall, the center department that runs through solid fixed ring 8 is provided with shrinkage pool 81, shrinkage pool 81 sets up to the round platform form, shrinkage pool 81 is close to the one end diameter of sealing member 5 and is greater than other end diameter, can be with reducing the axial.

Referring to fig. 2, the blocking plates 9 are arranged at the grout inlet 3 and the grout outlet 4, the blocking plates 9 are arranged in a circular truncated cone shape, the aperture of one end of each blocking plate 9 facing the grout pipe 31 and the aperture of one end of each grout outlet 41 are smaller than the aperture of the other end of each blocking plate, and the setting avoids that grout overflows too fast to cause holes in the inner sleeve 12, so that the compactness of the grout in the inner sleeve 12 is enhanced, and the connection quality is improved. Be provided with in a thick liquid pipe 41 and slowly ooze board 10, slowly ooze board 10 and set up to discoid, slowly ooze and seted up a plurality of slowly on the board 10 and oozed the aperture, slowly ooze board 10 and further slowed down the speed that thick liquids oozed from a thick liquid mouth 4, and then make thick liquids fill more comprehensively in inner sleeve 12, further improved the closely knit nature that thick liquids were filled.

Referring to fig. 2, a plurality of annular protrusions 15 are provided at the outside of the outer cylinder, and the plurality of annular protrusions 15 are uniformly distributed along the length direction of the outer sleeve 11. The contact area of the outer sleeve 11 and the concrete member is increased, the occlusion force between the outer sleeve 11 and the concrete precast block is improved, and the connection quality of the outer sleeve 11 is improved.

The implementation principle of the embodiment is as follows: the manufacturing process comprises the following steps: firstly, processing spiral raised ribs 6 on the inner side wall of an inner sleeve 12 made of carbon fibers, uniformly coating an epoxy resin glue layer 7 on the outer side of the inner sleeve 12, and sleeving an outer sleeve 11 made of a seamless steel pipe on the outer side wall of the inner sleeve 12; then processing a check plate 9 at the grouting port 3 and the grout outlet 4, and welding a grout outlet pipe 41 and a grout pipe 31; a slow seepage plate 10 is additionally arranged in the grouting pipe 31.

The use process comprises the following steps: in the production process of actually connecting vertical members, sleeves 1 are embedded in the two vertical members, reinforcing steel bars in the upper members are inserted into insertion holes 2 above the sleeves 1 and extend to the middle parts of the sleeves 1, lower reinforcing steel bars are embedded in the lower members in a construction site, the upper members are vertically placed on the lower members, the lower reinforcing steel bars are inserted into the inner sleeves 12, grouting is carried out from grouting ports 3 below, slurry enters the inner sleeves 12 from the grouting ports 3, then the slurry gradually fills cavities of the inner sleeves 12 along with continuous grouting of the slurry, and meanwhile backflow phenomena of the slurry are reduced by the backflow preventing plates 9 at the grouting ports 3; the thick liquids flow in guiding gutter 61, increase its mobility, increase the closely knit degree of grout, when the thick liquids rises to the height of grout outlet 4, the thick liquids receive earlier the hindrance that hinders back board 9, then continue to rise, receive the hindrance effect that slowly oozes board 10 then to make the thick liquids continue to rise in sleeve 1, finally fill up the space in sleeve 1 as far as possible, further increase the closely knit degree of grout. Finally, sealing the rubber plug at the grout outlet 4 to finish the grouting process.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a grout sleeve structure, includes sleeve (1) of vertical setting, its characterized in that: the sleeve (1) comprises an outer sleeve (11) and an inner sleeve (12), the outer sleeve (11) is coaxially fixed and sleeved outside the inner sleeve (12), insertion holes (2) are formed in two ends of the outer sleeve (11), a grouting port (3) is formed in the side, close to the lower insertion hole (2), of the outer sleeve (11), the grouting port (3) is connected with a grouting pipe (31), a grout outlet (4) is formed in the side, close to the upper insertion hole (2), of the outer sleeve (11), the grout outlet (4) is connected with a grout outlet pipe (41), the grouting port (3) and the grout outlet (4) are located on the same vertical side of the outer sleeve (11), sealing elements (5) are arranged in the insertion holes (2), protruding ribs (6) are arranged on the inner wall of the inner sleeve (12), and the protruding ribs (6) are arranged spirally along the length direction of the inner sleeve (12), flow guide grooves (61) are formed between the adjacent raised ribs (6).

2. A grout sleeve construction according to claim 1, wherein: the inner sleeve (12) and the outer sleeve (11) are fixedly connected through an epoxy resin glue layer (7).

3. A grout sleeve construction according to claim 2, wherein: the inner sleeve (12) is provided with a plurality of sections along the axial direction of the outer sleeve (11), and the adjacent sections of the inner sleeve (12) are arranged in a fitting manner.

4. A grout sleeve construction according to claim 1, wherein: inner sleeve (12) are close to the tip of sealing member (5) and are provided with solid fixed ring (8), run through the center department of solid fixed ring (8) is provided with shrinkage pool (81), shrinkage pool (81) set up to the round platform form, the one end diameter that shrinkage pool (81) are close to sealing member (5) is greater than the other end diameter.

5. A grout sleeve construction according to claim 1, wherein: the inner wall of the inner sleeve (12) and the flow guide groove (61) are covered with smooth non-stick coatings.

6. A grout sleeve construction according to claim 1, wherein: and the grout outlet (3) and the grout outlet (4) are respectively provided with a back blocking plate (9).

7. A grout sleeve construction according to claim 1, wherein: a slow seepage plate (10) for slowing down the outflow of the slurry is arranged in the slurry outlet pipe (41).

8. A grout sleeve construction according to claim 1, wherein: the outer surface of the outer sleeve (11) is coaxially provided with a plurality of annular bulges (15), and the annular bulges (15) are uniformly distributed along the length direction of the outer sleeve (11).