CN204728585U - The reinforcing bar grouting branch sleeve of precast assembly - Google Patents
The reinforcing bar grouting branch sleeve of precast assembly Download PDFInfo
- Publication number
- CN204728585U CN204728585U CN201520103105.XU CN201520103105U CN204728585U CN 204728585 U CN204728585 U CN 204728585U CN 201520103105 U CN201520103105 U CN 201520103105U CN 204728585 U CN204728585 U CN 204728585U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- reinforcing bar
- branch sleeve
- precast assembly
- grouting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 38
- 239000011440 grout Substances 0.000 claims abstract description 16
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 8
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920006305 unsaturated polyester Polymers 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The utility model relates to the reinforcing bar grouting branch sleeve of precast assembly, shape is hollow circular cylinder, sleeve lining is provided with shear key, sidewall has two reserved apertures, namely one is grouting mouth, another is grout outlet, and be also provided with reinforcing bar positive stop key tooth in sleeve, this branch sleeve is processed into by fibre-reinforced plastics.Compared with prior art, the utility model adopts fibre-reinforced plastics to be processed into, and under the condition that ensure that bar connecting mechanical requirements, significantly alleviates deadweight, and enhances durability.
Description
Technical field
The utility model relates to a kind of branch sleeve, especially relates to a kind of reinforcing bar grouting branch sleeve of precast assembly.
Background technology
Reinforcing bar grout sleeve connecting structure is through the hollow type sleeve of casting, and reinforcing bar penetrates sleeve inner from both ends open, not needing overlap joint or welding, by filling the structural mortar of high strength microdilatancy between reinforcing bar and sleeve, realizing steel bar joining function.What its mechanism connected mainly was subject to sleeve by high-strength mortar encloses Shu Zuoyong, add that itself there is microdilatancy characteristic, strengthen by this and reinforcing bar, inside sleeve between radial constraint active force, reinforcing bar is by the frictional force of this radial constraint active force and rough surface generation, the snap-in force that the chemical adhesion of mortar and rebar surface and rebar surface screw thread produce transmits reinforcement stresses, thus realizes the connection of reinforcing bar.
At present, make the material of reinforcing bar grout sleeve as adopted machining mode, substantially be adopt the materials such as carbon constructional quality steel, low-alloy high-tensile structural steel or cast iron, and adopt one of steel, cast iron materials large drawback to be exactly from great, the connection of a pier shaft and cushion cap needs tens grout sleeves usually, this weight for workman construction excessive, more difficult realization is accurately located; Next easily chemistry or electrochemical corrosion occurs, and affects the reliability of sleeve to bar connecting.
Chinese patent CN103899043A discloses a kind of embedded pyramidal reinforcing bar half grout sleeve, comprise connector, sleeve body, grouting mouth, grout outlet, cone, shearing bolt, elastic rubber sealing ring, wherein, one end in sleeve body is provided with connector, and the other end is equipped with elastic rubber sealing ring; Sleeve body is equipped with the embedded cone in one end of elastic rubber sealing ring, and the outer wall of sleeve body side is provided with grouting mouth and grout outlet, and middle part is provided with shearing bolt; One end of fixation side indented bars connects with connector, and one end of inserting side indented bars is positioned at sleeve body through elastic rubber sealing ring, cone.Embedded pyramidal half grout sleeve and other similar patent have a common feature to be that sleeve body is made by cast iron, carbon constructional quality steel or Hi-Stren steel or structural alloy steel, this kind of grout sleeve has following deficiency: one is after prefabricated units complete, usually the longer storage life is had, under period, sleeve was exposed to surrounding environment, easily there is corrosion; Next be concrete structure during use, cover concrete is once ftracture, and this kind of sleeve also more easily corrosion occurs, and affects its mechanical property; This kind of sleeve also has a factor to be exactly the heavier-weight of self, and workman is more difficult in sleeve installation and position fixing process.The main feature of the application's patented product is that sleeve body is made up of fibre-reinforced plastics, this sleeve can realize the mechanical property of bar connecting reliably, there is corrosion-resistant and lightweight advantage, constructability simultaneously, improve the durability of prefabricated units and reliable bar connecting performance.
Utility model content
The purpose of this utility model is exactly to overcome existing cast iron, steel sleeve from great, the technological deficiency of easy-to-rust and provide a kind of from heavy and light, the reinforcing bar grouting branch sleeve of rust stable precast assembly.
The purpose of this utility model can be achieved through the following technical solutions:
The reinforcing bar grouting branch sleeve of precast assembly, be the branch sleeve of fibre-reinforced plastics material, shape is hollow circular cylinder, sleeve lining is provided with shear key, sidewall has two reserved apertures, and namely one is grouting mouth, another is grout outlet, is also provided with reinforcing bar positive stop key tooth in sleeve.
Described shear key is some projections of stretching out that sleeve lining is arranged, in thread-like structure around inwall a few.
Described grouting mouth is positioned at the lower end of sleeve lateral wall, and grout outlet is positioned at the upper end of sleeve lateral wall.
Described reinforcing bar positive stop key tooth is be arranged on two cylinders and two flat boards that sleeve inner is stretched out.
Distance between described cylinder is less than the diameter of reinforcing bar to be fixed.
The front end of described flat board is convex structure, and the spacing of flat board is greater than the diameter of reinforcing bar to be fixed.
Compared with prior art, the utility model adopts fibre-reinforced plastics to be processed into, strengthen the constraint of composite plastic by high-intensity fiber and improve cementation material to the restriction ability being connected reinforcing bar, ensure that the requirement of sleeve connection mechanical property, significantly alleviate deadweight, enhance the corrosion resistance of sleeve, and reduce the cost of material.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model;
Structural representation when Fig. 3 is the utility model application.
In figure, 1-grouting mouth, 2-cylinder position-limit mechanism, 3-dull and stereotyped position-limit mechanism, 4-shear key, 5-reinforcing bar, 6-grout outlet.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
The reinforcing bar grouting branch sleeve of precast assembly, its structure as shown in Figure 1, 2, the shape of this branch sleeve is hollow circular cylinder, sleeve lining is provided with shear key 4, the lower end of sidewall has a grouting mouth 1, and the upper end of sidewall has a grout outlet 6, is provided with reinforcing bar positive stop key tooth in sleeve, its most important feature is exactly that branch sleeve is processed into by fibre-reinforced plastics.
Fibre-reinforced plastics is proportion 40% fibrous material, and the matrix material of proportion 40% and the curing compound of proportion 20% make through extruding or hand formulating method the composite material obtained, and during making, one deck fibrous material, one deck matrix material apply successively and obtain.The fibrous material adopted is aramid fiber, and matrix material is epoxy resin or unsaturated polyester (UP).Thus instead of traditional steel.
Shear key 4 is some projections of stretching out that sleeve lining is arranged, in thread-like structure around inwall a few.Reinforcing bar positive stop key tooth is be arranged on two cylinder position-limit mechanisms 2 and two dull and stereotyped position-limit mechanisms 3 that sleeve inner is stretched out.Distance between cylinder position-limit mechanism 2 is less than the diameter of reinforcing bar 5 to be connected, and the front end of dull and stereotyped position-limit mechanism 3 is convex structure, and the spacing of dull and stereotyped position-limit mechanism 3 is greater than the diameter of reinforcing bar 5 to be connected.
The reserved steel bar 5 of prefabricated units as shown in Figure 3, is first inserted sleeve inner, is fixed on sleeve midpoint by cylinder position-limit mechanism 2, be fixed on sleeve axis by dull and stereotyped position-limit mechanism 3 by the structure of the utility model when applying.By lifting, the reserved steel bar of another component is inserted the other end of sleeve again, then from grouting mouth press-in microdilatancy high-strength cement mortar, and flow out through grout outlet, guarantee that in sleeve, grouting is closely knit full.Thus achieve the connection of two reinforcing bars.What high-strength cement mortar was subject to sleeve encloses Shu Zuoyong, add that itself there is microdilatancy characteristic, strengthen by this and reinforcing bar, inside sleeve between radial constraint active force, namely reinforcing bar produces frictional force by this radial constraint active force and rough surface, and the snap-in force that the chemical adhesion of mortar and rebar surface and rebar surface screw thread produce transmits reinforcement stresses.
Claims (6)
1. the reinforcing bar grouting branch sleeve of precast assembly, it is characterized in that, this branch sleeve is the branch sleeve of fibre-reinforced plastics material, shape is hollow circular cylinder, sleeve lining is provided with shear key, sidewall has two reserved apertures, and namely one is grouting mouth, another is grout outlet, is also provided with reinforcing bar positive stop key tooth in sleeve.
2. precast assembly according to claim 1 reinforcing bar grouting branch sleeve, it is characterized in that, described shear key is some projections of stretching out that sleeve lining is arranged, in thread-like structure around inwall a few.
3. the reinforcing bar grouting branch sleeve of precast assembly according to claim 1, it is characterized in that, described grouting mouth is positioned at the lower end of sleeve lateral wall, and grout outlet is positioned at the upper end of sleeve lateral wall.
4. the reinforcing bar grouting branch sleeve of precast assembly according to claim 1, it is characterized in that, described reinforcing bar positive stop key tooth is be arranged on two cylinders and two flat boards that sleeve inner is stretched out.
5. the reinforcing bar grouting branch sleeve of precast assembly according to claim 4, it is characterized in that, the distance between described cylinder is less than the diameter of reinforcing bar to be fixed.
6. the reinforcing bar grouting branch sleeve of precast assembly according to claim 4, it is characterized in that, the front end of described flat board is convex structure, and the spacing of flat board is greater than the diameter of reinforcing bar to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520103105.XU CN204728585U (en) | 2015-02-12 | 2015-02-12 | The reinforcing bar grouting branch sleeve of precast assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520103105.XU CN204728585U (en) | 2015-02-12 | 2015-02-12 | The reinforcing bar grouting branch sleeve of precast assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204728585U true CN204728585U (en) | 2015-10-28 |
Family
ID=54386946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520103105.XU Expired - Fee Related CN204728585U (en) | 2015-02-12 | 2015-02-12 | The reinforcing bar grouting branch sleeve of precast assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204728585U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652712A (en) * | 2015-02-12 | 2015-05-27 | 同济大学 | Epoxy resin connecting sleeve |
| CN105625641A (en) * | 2016-02-16 | 2016-06-01 | 沈阳建筑大学 | FRP (fiber reinforced polymer) grouting sleeve for connecting reinforced steel bars |
| CN113622559A (en) * | 2021-09-03 | 2021-11-09 | 耀华建设管理有限公司 | Civil building assembly type wall based on BIM and construction method thereof |
-
2015
- 2015-02-12 CN CN201520103105.XU patent/CN204728585U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104652712A (en) * | 2015-02-12 | 2015-05-27 | 同济大学 | Epoxy resin connecting sleeve |
| CN104652712B (en) * | 2015-02-12 | 2017-01-18 | 同济大学 | epoxy resin connecting sleeve |
| CN105625641A (en) * | 2016-02-16 | 2016-06-01 | 沈阳建筑大学 | FRP (fiber reinforced polymer) grouting sleeve for connecting reinforced steel bars |
| CN105625641B (en) * | 2016-02-16 | 2018-06-12 | 沈阳建筑大学 | A kind of FRP grout sleeves for bar connecting |
| CN113622559A (en) * | 2021-09-03 | 2021-11-09 | 耀华建设管理有限公司 | Civil building assembly type wall based on BIM and construction method thereof |
| CN113622559B (en) * | 2021-09-03 | 2022-02-18 | 耀华建设管理有限公司 | Civil building assembly type wall based on BIM and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |