CN110258966B - Anti-pulling fiber reinforced composite bar connecting sleeve - Google Patents
Anti-pulling fiber reinforced composite bar connecting sleeve Download PDFInfo
- Publication number
- CN110258966B CN110258966B CN201910651519.9A CN201910651519A CN110258966B CN 110258966 B CN110258966 B CN 110258966B CN 201910651519 A CN201910651519 A CN 201910651519A CN 110258966 B CN110258966 B CN 110258966B
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- bolt
- bolt cover
- sleeve main
- sleeve
- main body
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- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 48
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 abstract description 27
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 description 9
- 238000005266 casting Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000011440 grout Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a pull-out-resistant fiber reinforced composite bar connecting sleeve, which comprises a sleeve main body, wherein the sleeve main body is in an axisymmetric structure, a left right bolt cover is arranged on the left side of the sleeve main body, a right bolt cover is arranged on the right side of the sleeve main body, the size and the model of the left right bolt cover are the same as those of the right bolt cover, and forward threaded holes are formed in the centers of the left right bolt cover and the right bolt cover in a penetrating manner. The invention provides a pull-out resistant fiber reinforced composite bar connecting sleeve, which has the following characteristics: the fiber reinforced composite bar is difficult to generate torsion deformation or even damage under the action of external force; the surfaces of the left inner pipe wall, the right inner pipe wall and the fiber reinforced composite bar have stronger mechanical biting force, so that the pulling resistance is improved; the bolts are fixedly connected by adopting the bolt caps, so that the probability of fatigue damage is reduced, and the working under the normal limit use state is kept; the compactness of the mortar in the sleeve body is better ensured by the bidirectional grouting, so that the mortar and the fiber reinforced composite bar work cooperatively better.
Description
Technical Field
The invention relates to the technical field of connecting devices for building industry, in particular to a pull-out-resistant fiber reinforced composite bar connecting sleeve.
Background
In recent years, the development and continuous innovation of science and technology greatly promote the rapid development of the building industry, house assembly is carried out on a construction site, and the traditional lagging house construction method is thoroughly changed. With the development of building industrialization, various countries use factory prefabrication and construction assembly of building components as important signs for modernization of the residential industry. Along with the development of the assembled building industry, the fiber reinforced composite bar with various excellent characteristics of light weight, high strength, corrosion resistance, no magnetism and the like is widely applied.
The development of fiber reinforced composite bar assembly brings new problems and contradictions: and the connection problem of each assembled plate. The overall performance superiority of the fabricated structure is directly affected by the performance of the connectors of each assembled plate, and the development potential and market space of future building construction are determined. Therefore, the fiber reinforced composite bar connecting component is particularly important.
According to a large number of documents, at present, various scholars at home and abroad put forward different theories and assumptions for the steel frame connecting device, but generally have the following problems:
(1) Because of the construction technology difference, the rigid connection of the fiber reinforced composite bars is easy to cause the weakness of the connection part of the fiber reinforced composite bars, and the safety of the connection part cannot be ensured.
(2) The steel sleeve is compressed by the extruder to generate plastic deformation, and the mode of connecting two fiber reinforced composite bars is realized by means of the mutual engagement fastening force between the sleeve and the fiber reinforced composite bars after plastic deformation to have adverse effects on the sleeve and the base metal, so that fatigue fracture is easily formed in the extrusion process.
(3) The unidirectional threaded connection is easy to cause slipping phenomenon after the fiber reinforced composite bar is stressed due to improper operation of constructors, so that the joint is weak.
(4) Because the mortar contacts with the fiber reinforced composite bar in a surface manner, the fiber reinforced composite bar is easy to twist relative to the sleeve when being subjected to dynamic load, so that the joint is damaged.
Based on the problems, a pull-out-resistant fiber reinforced composite bar connecting sleeve is provided.
Disclosure of Invention
The invention aims to provide a pull-out resistant fiber reinforced composite bar connecting sleeve, which has the advantages of strong torsion resistance and deformation resistance, can keep the fiber reinforced composite bar working in a normal limit use state and a mortar pouring compactness frame, and can better cooperate with the fiber reinforced composite bar so as to solve the problems that the fiber reinforced composite bar is easy to slip after being stressed and the connecting part is easy to break under the action of torsion force in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a fiber reinforcement composite bar connecting sleeve that resists pulling, includes the sleeve main part, and the sleeve main part is axisymmetric structure, and the left side of sleeve main part is provided with the right side and just covers the bolt, and the right side of sleeve main part is equipped with right side and just covers the bolt, and the size model of right side just covers the bolt is the same, and the center of right side just covers the bolt and just covers just all runs through and opens forward screw hole; the bottoms of the left right bolt cover and the right bolt cover are provided with reserved holes, bolt cover cap fixing bolts are arranged on the outer sides of the reserved holes at the bottoms of the left right bolt cover and the right bolt cover, the left right bolt cover is mechanically connected with the sleeve main body through bolt cap fixing bolt penetrating reserved holes, and the right bolt cover is mechanically connected with the sleeve main body through bolt cap fixing bolt penetrating reserved holes; a left pulp inlet and a left pulp outlet are formed in the left side of the sleeve main body; a left inner pipe wall is arranged on the left side of the inside of the sleeve main body, and a left anti-pulling rib is arranged on the outer side of the left inner pipe wall; a right pulp inlet and a right pulp outlet are formed in the right side of the sleeve main body; a right inner pipe wall is arranged on the right side of the inside of the sleeve main body, and a right anti-pulling rib is arranged on the outer side of the right inner pipe wall; the left reverse bolt groove and the right reverse thread groove are respectively arranged on two sides of the center of the sleeve body, square holes are formed in the connecting ends of the left reverse bolt groove and the right reverse thread groove, the left reverse bolt groove and the right reverse thread groove are connected into a whole through the square holes, the left side of the left reverse bolt groove is communicated with the left inner pipe wall, and the right side of the right reverse thread groove is communicated with the right inner pipe wall.
Preferably, the left reverse bolt groove is opposite in screw direction to the forward screw hole of the left forward bolt cover, and the right reverse screw groove is opposite in screw direction to the forward screw hole of the right forward bolt cover.
Preferably, the left inner pipe wall and the right inner pipe wall are both in slope-shaped structures with wide inner side and narrow outer side.
Preferably, the left anti-pulling rib is obliquely arranged on the outer side of the left inner pipe wall, and the right anti-pulling rib is obliquely arranged on the outer side of the right inner pipe wall.
Preferably, the left right bolt cover and the right bolt cover are provided with four reserved holes, the four reserved holes are distributed in a square shape, the left right bolt cover is mechanically connected with the left side of the sleeve main body by adopting four bolt cover cap fixed bolt penetrating reserved holes, and the right bolt cover is mechanically connected with the right side of the sleeve main body by adopting four bolt cover cap fixed bolt penetrating reserved holes.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a pull-out-resistant fiber reinforced composite bar connecting sleeve, which has the following advantages:
And (3) a step of: the left positive bolt cover and the left reverse bolt groove with opposite screw threads and the right positive bolt cover and the right reverse screw groove with opposite screw threads are arranged, so that after the casting mortar is solidified, the fiber reinforced composite bar is difficult to generate torsional deformation or even damage under the action of external force.
And II: and casting a left anti-pulling rib and a right anti-pulling rib in the sleeve main body, and after the casting mortar is solidified and integrally formed, enabling the surfaces of the left inner pipe wall and the right inner pipe wall and the fiber reinforced composite bar to have stronger mechanical engagement force, so that the anti-pulling performance of the fiber reinforced composite bar is improved.
Thirdly,: the left positive bolt cover and the right positive bolt cover are connected with the sleeve main body by adopting four bolt cover cap fixing bolts, so that the probability of fatigue damage is reduced for the fiber reinforced composite bar, and the fiber reinforced composite bar can work under the normal limit use state.
Fourth, the method comprises the following steps: the left slurry inlet and the right slurry inlet are adopted for bidirectional grouting, and the grouting mode that pressure overflows from the left slurry outlet and the right slurry outlet is generated through grouting, so that the compactness of mortar in the sleeve main body is better ensured, and the mortar and the fiber reinforced composite bar work better in cooperation.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the left front bolt cover of the present invention;
Fig. 4 is a side view of the left front bolt cover of the present invention.
In the figure: 1. a sleeve body; 2. a left positive bolt cover; 3. right bolt cover; 4. a forward threaded hole; 5. reserving holes; 6. the bolt is covered and capped to fix the bolt; 7. a left slurry inlet; 8. a left pulp outlet; 9. a left inner tube wall; 10. left anti-pulling ribs; 11. a right slurry inlet; 12. a right pulp outlet; 13. a right inner tube wall; 14. a right anti-pulling rib; 15. left reverse bolt slot; 16. right reverse thread groove; 17. square holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, a pull-out resistant fiber reinforced composite bar connecting sleeve comprises a sleeve main body 1, wherein the sleeve main body 1 is in an axisymmetric structure, a left right bolt cover 2 is arranged on the left side of the sleeve main body 1, a right bolt cover 3 is arranged on the right side of the sleeve main body 1, the size and the model of the left right bolt cover 2 and the right bolt cover 3 are the same, and a positive threaded hole 4 is formed in the centers of the left right bolt cover 2 and the right bolt cover 3 in a penetrating manner; the bottoms of the left right bolt cover 2 and the right bolt cover 3 are provided with reserved holes 5, the outer sides of the reserved holes 5 at the bottoms of the left right bolt cover 2 and the right bolt cover 3 are provided with bolt cap fixing bolts 6, the left right bolt cover 2 is mechanically connected with the sleeve main body 1 through the reserved holes 5 penetrated by the bolt cap fixing bolts 6, the right bolt cover 3 is mechanically connected with the sleeve main body 1 through the reserved holes 5 penetrated by the bolt cap fixing bolts 6, the reserved holes 5 at the bottoms of the left right bolt cover 2 and the right bolt cover 3 are four, the four reserved holes 5 are arranged in a square shape, the left positive bolt cover 2 is mechanically connected with the left side of the sleeve main body 1 by adopting four bolt cover cap fixing bolts 6 penetrating through the reserved holes 5, the right positive bolt cover 3 is mechanically connected with the right side of the sleeve main body 1 by adopting four bolt cover cap fixing bolts 6 penetrating through the reserved holes 5, and the bolt cover cap fixing bolts 6 are connected with the sleeve main body 1, so that the probability of fatigue failure is reduced for the fiber reinforced composite bar, and the fiber reinforced composite bar can work under the normal limit use state; the left side of the sleeve main body 1 is provided with a left pulp inlet 7 and a left pulp outlet 8; the left inner pipe wall 9 is arranged on the left side of the inside of the sleeve main body 1, and the left anti-pulling rib 10 is arranged on the outer side of the left inner pipe wall 9; the right side of the sleeve main body 1 is provided with a right pulp inlet 11 and a right pulp outlet 12; the right inner pipe wall 13 is arranged on the right side of the inside of the sleeve main body 1, the right anti-pulling rib 14 is arranged on the outer side of the right inner pipe wall 13, wherein the left inner pipe wall 9 and the right inner pipe wall 13 are of slope structures with wide inner sides and narrow outer sides, the left anti-pulling rib 10 is obliquely arranged on the outer side of the left inner pipe wall 9, the right anti-pulling rib 14 is obliquely arranged on the outer side of the right inner pipe wall 13, and after mortar is poured into the sleeve main body 1, the surfaces of the left anti-pulling rib 10, the right anti-pulling rib 14, the mortar and the fiber reinforced composite bar are mechanically meshed, so that drawing slippage is avoided; the left reverse bolt groove 15 and the right reverse thread groove 16 are respectively arranged on two sides of the center of the sleeve body 1, the thread directions of the left reverse bolt groove 15 and the forward thread hole 4 of the left forward bolt cover 2 are opposite, the thread directions of the right reverse thread groove 16 and the forward thread hole 4 of the right forward bolt cover 3 are opposite, a square hole 17 is formed in the connecting end of the left reverse bolt groove 15 and the right reverse thread groove 16, mortar is poured into the square hole 17 to integrate the mortar poured into the left reverse bolt groove 15 and the right reverse thread groove 16, the left side of the left reverse bolt groove 15 is communicated with the left inner pipe wall 9, and the right side of the right reverse thread groove 16 is communicated with the right inner pipe wall 13.
The forward threaded hole 4 is set to be a corresponding model according to the specific model of the fiber reinforced composite bar, one fiber reinforced composite bar passes through the forward threaded hole 4 of the left positive bolt cover 2 in a spiral mode, one fiber reinforced composite bar passes through the forward threaded hole 4 of the right positive bolt cover 3 in a spiral mode, mortar is poured into the left side of the sleeve main body 1 from the left slurry inlet 7, the mortar is poured into the left reverse bolt groove 15, the left inner pipe wall 9, the left anti-pulling rib 10 and the inner cavity of the sleeve main body 1 where the left anti-pulling rib is positioned, under the action of the generated extrusion force of continuous mortar pouring, the mortar is discharged from the left slurry outlet 8, fully contacts with the screwed fiber reinforced composite bar after being cooled and solidified, the mortar is mechanically meshed with the left inner pipe wall 9, the left anti-pulling rib 10 and the surface of the fiber reinforced composite bar, drawing slip is avoided, the mortar is poured into the right side of the sleeve main body 1 from the right slurry inlet 11 in the same way, the extrusion force is poured into the right reverse thread groove 16, the right inner pipe wall 13, the right anti-pulling rib 14 and the inner cavity of the sleeve main body 1 where the continuous mortar is screwed into the inner cavity, the continuous mortar is prevented from being fully meshed with the surface of the fiber reinforced rib, and the mortar is fully screwed into the inner cavity after the extrusion force is cooled and the mortar is fully cooled and solidified, and the mortar is fully screwed into the inner cavity and the fiber reinforced rib is cooled; through set up left reverse bolt groove 15 and right reverse thread groove 16 in the center of sleeve main part 1, the screw thread opposite direction of left reverse bolt groove 15 and the forward screw hole 4 of left positive bolt lid 2, the screw thread opposite direction of right reverse thread groove 16 and the forward screw hole 4 of right positive bolt lid 3, accessible screw thread makes fiber reinforced composite bar take place physical contact with sleeve main part 1, under the combined action of left positive bolt lid 2 and left reverse bolt groove 15 and right positive bolt lid 3 and right reverse thread groove 16, makes the structure have anti-torsion performance.
In summary, the anti-pulling fiber reinforced composite bar connecting sleeve provided by the invention has the following advantages:
and (3) a step of: the left positive bolt cover 2 and the left reverse bolt groove 15 with opposite screw threads and the right positive bolt cover 3 and the right reverse screw groove 16 with opposite screw threads are arranged, and after pouring mortar is solidified, the fiber reinforced composite bar is guaranteed to be difficult to generate torsional deformation or even damage under the action of external force.
And II: after casting the left anti-pulling rib 10 and the right anti-pulling rib 14 in the sleeve main body 1 and solidifying the casting mortar into a whole, the surfaces of the left inner pipe wall 9, the right inner pipe wall 13 and the fiber reinforced composite bar have stronger mechanical biting force, and the anti-pulling performance of the fiber reinforced composite bar is improved.
Thirdly,: the left positive bolt cover 2 and the right positive bolt cover 3 are connected with the sleeve main body 1 by adopting four bolt cover cap fixing bolts 6, so that the probability of fatigue damage of the fiber reinforced composite bar is reduced, and the fiber reinforced composite bar can work under the normal limit use state.
Fourth, the method comprises the following steps: the left grout inlet 7 and the right grout inlet 11 are adopted for bidirectional grouting, and the grouting mode that pressure overflows from the left grout outlet 8 and the right grout outlet 12 is generated through grouting, so that the compactness of mortar in the sleeve main body 1 is better ensured, and the mortar and the fiber reinforced composite bar work better in cooperation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (2)
1. The utility model provides a resistance to plucking fiber reinforcement composite bar connecting sleeve, its characterized in that, including sleeve main part (1), sleeve main part (1) is axisymmetric structure, and the left side of sleeve main part (1) is provided with left positive bolt lid (2), and the right side of sleeve main part (1) is equipped with right positive bolt lid (3), and the size model of left positive bolt lid (2) is the same with right positive bolt lid (3), and the center of left positive bolt lid (2) and right positive bolt lid (3) all runs through and opens positive screw hole (4); the bottoms of the left right bolt cover (2) and the right bolt cover (3) are provided with reserved holes (5), the outer sides of the reserved holes (5) at the bottoms of the left right bolt cover (2) and the right bolt cover (3) are provided with bolt cover cap fixing bolts (6), the left right bolt cover (2) is mechanically connected with the sleeve main body (1) through the reserved holes (5) through the bolt cover cap fixing bolts (6), and the right bolt cover (3) is mechanically connected with the sleeve main body (1) through the reserved holes (5) through the bolt cover cap fixing bolts (6); a left pulp inlet (7) and a left pulp outlet (8) are formed in the left side of the sleeve main body (1); a left inner pipe wall (9) is arranged on the left side of the inside of the sleeve main body (1), and a left anti-pulling rib (10) is obliquely arranged on the outer side of the left inner pipe wall (9); a right pulp inlet (11) and a right pulp outlet (12) are formed in the right side of the sleeve main body (1); a right inner pipe wall (13) is arranged on the right side of the inside of the sleeve main body (1), and a right anti-pulling rib (14) is obliquely arranged on the outer side of the right inner pipe wall (13); the left inner pipe wall (9) and the right inner pipe wall (13) are of slope structures with wide inner sides and narrow outer sides; the left reverse bolt groove (15) and the right reverse thread groove (16) are respectively arranged on two sides of the center of the sleeve body (1), square holes (17) are formed in the connecting ends of the left reverse bolt groove (15) and the right reverse thread groove (16), the left reverse bolt groove (15) and the right reverse thread groove (16) are connected into a whole in a penetrating mode through the square holes (17), the left side of the left reverse bolt groove (15) is communicated with the left inner pipe wall (9), and the right side of the right reverse thread groove (16) is communicated with the right inner pipe wall (13); the left reverse bolt groove (15) is opposite to the screw thread direction of the forward threaded hole (4) of the left positive bolt cover (2), and the right reverse screw thread groove (16) is opposite to the screw thread direction of the forward threaded hole (4) of the right positive bolt cover (3).
2. The pull-out resistant fiber reinforced composite bar connecting sleeve as set forth in claim 1, wherein: the left right bolt cover (2) and the right bolt cover (3) are provided with four reserved holes (5) at the bottoms, the four reserved holes (5) are distributed in a square mode, the left right bolt cover (2) is mechanically connected with the left side of the sleeve body (1) by penetrating through the reserved holes (5) through four bolt cover cap fixing bolts (6), and the right bolt cover (3) is mechanically connected with the right side of the sleeve body (1) by penetrating through the reserved holes (5) through four bolt cover cap fixing bolts (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910651519.9A CN110258966B (en) | 2019-07-18 | 2019-07-18 | Anti-pulling fiber reinforced composite bar connecting sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910651519.9A CN110258966B (en) | 2019-07-18 | 2019-07-18 | Anti-pulling fiber reinforced composite bar connecting sleeve |
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| Publication Number | Publication Date |
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| CN110258966A CN110258966A (en) | 2019-09-20 |
| CN110258966B true CN110258966B (en) | 2024-04-26 |
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| CN201910651519.9A Active CN110258966B (en) | 2019-07-18 | 2019-07-18 | Anti-pulling fiber reinforced composite bar connecting sleeve |
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| CN113338545B (en) * | 2021-06-29 | 2022-09-23 | 扬州大学 | FRP rib connecting device and connecting method thereof |
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