CN103899044A - Full-grouting sleeve embedded with cones - Google Patents
Full-grouting sleeve embedded with cones Download PDFInfo
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- CN103899044A CN103899044A CN201410143821.0A CN201410143821A CN103899044A CN 103899044 A CN103899044 A CN 103899044A CN 201410143821 A CN201410143821 A CN 201410143821A CN 103899044 A CN103899044 A CN 103899044A
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Abstract
The invention discloses a full-grouting sleeve embedded with cones. The sleeve comprises a sleeve body (3), cones (7), a grouting port (4), a grout outlet (5), a limiting bolt (9) and rubber sealing rings (10), wherein the rubber sealing rings (10) are arranged at two ends of the sleeve body (3); the cones (7) are respectively and fixedly embedded in two ends of the sleeve body (3); in order to prevent the cones (7) from sliding in the sleeve body, the part of the sleeve body (3) which corresponds to two ends of the cones (7) is subjected to rolling treatment, and the inner diameter of the part of the sleeve body (3) is reduced; the grouting port (4) is formed in an outer wall at one end of the sleeve body (3); the grout outlet (5) is formed in an outer wall at the other end. The full-grouting sleeve has the advantages of simplicity in processing, low cost and the like, is particularly applied to connection of steel bars in member beams, posts and shear wall members, can be widely applied to an assembled concrete structure and has wide engineering application prospects.
Description
Technical field
The present invention relates to a kind of slurry anchor formula sleeve connector connecting for reinforcing bar between precast unit, belong to construction engineering technical field, be specially a kind of embedded pyramidal full grout sleeve.
Background technology
Prefabricated assembled concrete structure is as a kind of form of structure that meets industrialized production, has that speed of application is fast, labour intensity is low, noise pollution and an advantage such as wet trade is few and product quality is easy to control, is widely applied in developed country.Adopt the construction techniques of prefabrication and assembly construction effectively to economize on resources and the energy, improve material in the utilization rate realizing aspect building energy conservation and structural performance, overcome the restriction that construction plant and ambient conditions are right to site operation, reduce the site operation quantity of labour force, reduce the harmful effect of building waste and Construction on Environment, improve building function and structural performance.Promote the Green Development requirement that prefabricated assembled concrete structure is conducive to realize " four joint one environmental protection ", realize the building course of low energy consumption, low emission, can promote the sound development of Building Trade in China, realize predetermined target for energy-saving and emission-reduction, be the developing direction of Future in China building.
As everyone knows, the core of prefabricated assembled concrete structure and difficult point are the connectivity problems of reinforcing bar.Common reinforcing bar type of attachment has mechanical connection, be welded to connect, overlap joint connection etc., but all exist need be after connected node place builds after connecting the problem of pouring concrete, cementation sleeve connect can pre-plugged in concrete member, when construction, the reinforcing bar that stretches out of another parts is inserted in the sleeve that these parts are corresponding, then pouring into branch sleeve without shrinking high strength cement mortar, fill up the gap between sleeve and reinforcing bar, after cement mortar sclerosis, two reinforcing bars just firmly link together, thereby reach the object that connects two end bars, connected node place is without building rear pouring concrete, the joint efficiency of node is higher.
At present, in the related specifications of the prefabricated concrete structure of China various places appearance, code, the connection recommend adoption grout sleeve of reinforcing bar connects.This is mainly because compared with other connected mode, grout sleeve connects and has following advantage: 1. technology maturation; 2. connect reliable.External a large amount of engineering practice proves, this method of attachment is simple to operation, and joint is respond well.
The manufacture craft classification of pressing sleeve at present, can be divided into sleeve: cast iron (steel) sleeve and machine sleeve two classes.External reinforcing bar connection is generally ductile iron product with grout sleeve, domestic grout sleeve adopts cast iron (steel) cast or machining conventionally, machining is mainly taking rod iron or thick walled steel tube as material, by mechanical milling mode, rod iron emptied or the inwall of thick walled steel tube is milled into both definite forms, thereby forming grout sleeve.The sleeve of above two types respectively has drawback, the profile heaviness of cast iron (steel) sleeve, and technical requirements is higher; Although machining sleeve strength ratio is higher, but still heavier, and high material consumption, cost of production is high, and production efficiency is low.As fully visible, all there is processing difficulties, form heaviness, high cost disadvantage in above two kinds of sleeves.
Chinese patent literature CN102071774A discloses a kind of plug-in type reinforcing bar branch sleeve and construction method thereof, described branch sleeve arranges tapered thread by inside and plays shearing resistance effect, the height of tapered thread is little, shearing resistance effect is limited, especially when with the larger reinforcing bar of this jacket cylinder connection diameter, the poor drawback of its shearing resistance effect is more remarkable.
Chinese patent literature CN102900201A discloses a kind of slurry anchor formula reinforcing steel bar connecting sleeve tube and mfg. moulding die and manufacture method, described branch sleeve pushes by specific mould, thereby the inside at sleeve body forms fin and groove, when has poured into after cementation material sleeve body inside, fin and groove play the effect of shearing resistance, the shearing resistance successful of this shear key, the more complicated but processing is got up, waste time and energy, processing cost is high.
Chinese patent literature CN102116075A discloses a kind of Novel cement grouting reinforcement jointing, described branch sleeve is rolled section steel, profile is circular or polygonal tubular, the hole of branch sleeve is isometrical circular hole, employing milling method is made, when has poured into after cementation material sleeve body inside, the protruding ring rib of branch sleeve inwall and sleeve nose end bulge loop play shearing resistance effect in the time of steel bar stretching or compression, shearing resistance successful, but sleeve is processed still more complicated, processing cost is high, is not used in applying of Practical Project.
To sum up, existing sleeve exist processing technology complexity,, the disadvantage such as waste of material is more, processing cost is high, be unfavorable for the development of current China housing industrialization and industrialization of construction industry.How to ensure, under the prerequisite of sleeve quality, simplifying form of sleeve, reduction sleeve cost, this is starting point of the present invention place just.
Summary of the invention
Technical problem: in order to overcome the deficiencies in the prior art, the present invention proposes a kind of simple for production, embedded pyramidal full grout sleeve and and preparation method thereof that processing cost is lower.
Technical scheme: for solving the problems of the technologies described above, the embedded pyramidal full grout sleeve that the present invention proposes, it is characterized in that, embedded pyramidal full grout sleeve comprises sleeve body, embedded cone, grouting mouth, grout outlet, caging bolt, elastic rubber sealing ring, elastic rubber sealing ring is equipped with at the two ends of sleeve body; Inner cone of build-in respectively in two ends of sleeve body; In order to prevent that cone from sliding in sleeve body, corresponding to pyramidal two-end part, sleeve body is carried out to roll extrusion processing and dwindles the internal diameter of sleeve body, and adopt and be welded and fixed; The outer wall of one end of sleeve body is provided with grouting mouthful, and the outer wall of the other end is provided with grout outlet.
The embedded pyramidal full grout sleeve of one of the present invention comprises sleeve body, cone, grouting mouth, grout outlet, caging bolt, rubber seal, and rubber seal is equipped with at the two ends of sleeve body; Inner cone of build-in respectively in two ends of sleeve body, in order to prevent that cone from sliding in sleeve body, carries out roll extrusion processing corresponding to the sleeve body position at cone two ends and dwindles the internal diameter of this part of sleeve body; The outer wall of one end of sleeve body is provided with grouting mouthful, and the outer wall of the other end is provided with grout outlet.
Embedded cone minimum diameter is slightly larger than bottom and inserts reinforcing bar and top and insert the diameter of reinforcing bar, adopts welding further to fix to sleeve body and embedded cone.
Sleeve body is provided with 3 row screws, and screw is provided with screw thread, and the location interval of 3 row screws on circumference is 120 degree, is screwed with shearing bolt on screw.
Sleeve body centre position is provided with a screw, is screwed with a caging bolt on it, ensures that the reinforcing bar on both sides has identical anchorage length.
The seamless steel pipe that sleeve body should select carbon constructional quality steel, Hi-Stren steel or structural alloy steel to be prepared from.
The diameter that described rubber seal internal diameter inserts reinforcing bar and top insertion reinforcing bar compared with bottom is smaller, and external diameter is bigger compared with sleeve body internal diameter, makes it in the time of grouting, play the effect of sealing.
Beneficial effect: the embedded pyramidal full grout sleeve of one of the present invention, utilize common low carbon steel seamless steel tube as sleeve body material, embedded cone combines.Material source is extensive on the one hand, and processing is easier on the other hand, can make sleeve cost of production greatly reduce.
By shearing bolt and embedded cone are set on sleeve body, make the internal diameter of sleeve dwindle gradually and improve the restriction ability to grouting material, greatly increase the adhesion strength between grouting material and reinforcing bar, reached and reduce anchorage length of steel bar in sleeve body, reduced material cost.
It is extensive that this Novel sleeve has material source, the advantages such as processing and fabricating is simple, dependable performance, greatly having improved current cast iron, Cast-steel Sleeve makes numerous and diverse, cost is higher, the machinery milling sleeve processing time consuming drawback such as take a lot of work, can be widely used in, in prefabricated concrete structure, thering is wide future in engineering applications.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
In figure: reinforcing bar 1 is inserted in bottom; Reinforcing bar 2 is inserted on top; Sleeve body 3; Grouting mouth 4; Grout outlet 5; Cementation material 6; Cone 7; Shearing bolt 8; Caging bolt 9; Rubber seal 10; Soldered 11.
Detailed description of the invention
The embedded pyramidal full grout sleeve of described one inside has embedded cone, sleeve body internal diameter is dwindled along entrance orientations, when reinforcing bar is under pulling force effect, the cementation material of sleeve body inside has the trend of outside slip, the cone of inside pipe casing makes grouting material in Three-phase stress state, thereby significantly strengthen the adhesion stress of high-strength grout and reinforcing bar, ensured that reinforcing bar bond-slip does not occur and destroys.
Embedded cone is pulled out when preventing reinforcing bar tension, dwindles sleeve body internal diameter carrying out roll extrusion processing corresponding to the sleeve at position, cone outer end, and adopts and be welded and fixed cone and sleeve.
For ensureing that reinforcing bar can insert sleeve, embedded cone minimum diameter should be slightly larger than bar diameter.
By shearing bolt is set on sleeve body, can replace the ring rib on cast iron (steel) sleeve, reinforcing bar is under tension and compression effect, the cementation material of sleeve body inside is in Three-phase stress state, shearing bolt plays the effect of shear connector therein, the tension and compression stress that sleeve inner is inserted to reinforcing bar is rationally distributed on whole sleeve body, has effectively avoided the stress raisers on sleeve body, and the resistance to tension of sleeve is significantly improved.Make the form of sleeve be simplified, weight is alleviated simultaneously, and cost is minimized.
As preferably, in order to improve the shear behavior of bolt, preferably 10.9 grades and above high-strength bolt of shearing bolt, hexagon socket head cap screw and outer-hexagonal bolt all can.
The embedded pyramidal full grout sleeve of described one, is characterized in that, sleeve body is provided with 3 row screws, and screw is provided with screw thread, and the location interval of 3 row screws is 120 degree, is screwed with shearing bolt on screw.
The embedded pyramidal full grout sleeve of described one, it is characterized in that, sleeve body centre position is provided with a screw, on it, be screwed with a caging bolt, when sleeve is installed, because being provided with caging bolt, sleeve easier for installation, ensure that the reinforcing bar that insert on both sides has identical anchorage length, effectively avoided connecting reinforcement to insert long or too short problem.
The embedded pyramidal full grout sleeve of described one, is characterized in that the seamless steel pipe that sleeve body should select carbon constructional quality steel, Hi-Stren steel, structural alloy steel etc. to be prepared from.
The embedded pyramidal full grout sleeve of described one, is characterized in that, sealing rubber ring internal diameter is little compared with bar diameter, and external diameter is large compared with sleeve diameter, ensures that sleeve body has good sealing, avoids spilling of in work progress grouting material.
The first step:
A kind of embedded pyramidal full grout sleeve, comprise: sleeve body 3, the embedded cone 7 of described sleeve body 3, after processing reduced inner diameter corresponding to the sleeve roll extrusion of cone outer end, adopt soldered 11 to connect, described sleeve body is provided with 3 row screws, and screw is provided with screw thread, the location interval of 3 row screws is 120 degree, on screw, be screwed with shearing bolt 8, sleeve middle part adopts caging bolt 10 to locate, and described sleeve body 3 processes for mild steel seamless steel pipe.
Second step:
The embedded pyramidal full grout sleeve of one described in the first step, described cone internal diameter should be slightly larger than bar diameter and be advisable, and cone should have gentle incline, shrinks gradually from inside to outside internal diameter along length sleeve direction.Cone should be fixed with sleeve, adopts roll extrusion processing to dwindle sleeve diameter and reinforcement of weld.
The 3rd step:
The embedded pyramidal full grout sleeve of one described in the first step, described shearing bolt, it can be hexagon socket head cap screw, also can be outer-hexagonal bolt, as preferably, preferably 10.9 grades and above high-strength bolt of shearing bolt, the length that shearing bolt stretches into sleeve is to be no less than 1/4 and be no more than 1/3 sleeve diameter and be advisable, the length that caging bolt stretches into sleeve is to be no less than 1/2 and do not push up and press sleeve lining to be advisable, and quantity, the diameter of shearing bolt need be according to the kind of connecting reinforcement, diameter calculative determinations.
The 4th step:
Utilize the embedded pyramidal full grout sleeve of one described in the 1st, 2,3 steps to carry out reinforcing bar while connecting, in the time that prefabricated units are built, first sleeve body is embedded in the first beam, sleeve body can be temporary fixed with the external wrapping concrete of the first beam.When on-the-spot installation, first the first beam is fixed, lifting the second beam, hoisting process is constantly adjusted the second beam, makes its reinforcing bar insert reserved sleeve body in the first beam.After insertion completes, the first beam is fixed, poured into cementation material 6 from the grouting mouth 4 of sleeve, after flowing out grout outlet 5, it stops grouting, and grouting mouth and grout outlet to sleeve carry out shutoff, complete the connection of all the other reinforcing bars of position of joints with method, complete Nodes construction.
Claims (6)
1. an embedded pyramidal full grout sleeve, it is characterized in that this sleeve comprises sleeve body (3), cone (7), grouting mouthful (4), grout outlet (5), caging bolt (9), rubber seal (10), rubber seal (10) is equipped with at the two ends of sleeve body (3); The inner cone of build-in (7) respectively in two ends of sleeve body (3), in order to prevent that cone (7) from sliding in sleeve body, carries out roll extrusion processing corresponding to sleeve body (3) position at cone (7) two ends and dwindles the internal diameter of this part of sleeve body (3); The outer wall of one end of sleeve body (3) is provided with grouting mouthful (4), and the outer wall of the other end is provided with grout outlet (5).
2. the embedded pyramidal full grout sleeve of one according to claim 1, it is characterized in that embedded cone (7) minimum diameter is slightly larger than bottom and inserts reinforcing bar (1) and top and insert the diameter of reinforcing bar (2), adopts welding further to fix to sleeve body (3) and embedded cone (7).
3. the embedded pyramidal full grout sleeve of one according to claim 1, is characterized in that, sleeve body (3) is provided with 3 row screws, and screw is provided with screw thread, and the location interval of 3 row screws on circumference is 120 degree, is screwed with shearing bolt (8) on screw.
4. the embedded pyramidal full grout sleeve of one according to claim 1, is characterized in that, sleeve body (3) centre position is provided with a screw, is screwed with a caging bolt (9) on it, ensures that the reinforcing bar on both sides has identical anchorage length.
5. the embedded pyramidal full grout sleeve of one according to claim 1, is characterized in that the seamless steel pipe that sleeve body (3) should select carbon constructional quality steel, Hi-Stren steel or structural alloy steel to be prepared from.
6. the embedded pyramidal full grout sleeve of one according to claim 1, it is characterized in that, the diameter that described rubber seal (10) internal diameter inserts reinforcing bar (1) and top insertion reinforcing bar (2) compared with bottom is smaller, external diameter is bigger compared with sleeve body (3) internal diameter, makes it in the time of grouting, play the effect of sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143821.0A CN103899044B (en) | 2014-04-10 | 2014-04-10 | Embedded pyramidal full grout sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143821.0A CN103899044B (en) | 2014-04-10 | 2014-04-10 | Embedded pyramidal full grout sleeve |
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| Publication Number | Publication Date |
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| CN103899044A true CN103899044A (en) | 2014-07-02 |
| CN103899044B CN103899044B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410143821.0A Active CN103899044B (en) | 2014-04-10 | 2014-04-10 | Embedded pyramidal full grout sleeve |
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| CN (1) | CN103899044B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612158A (en) * | 2014-12-13 | 2015-05-13 | 广西科技大学 | Grouting method of steel bar connector |
| CN105064618A (en) * | 2015-07-12 | 2015-11-18 | 北京工业大学 | Coiled material steel bar grouting connector |
| CN106894517A (en) * | 2017-02-16 | 2017-06-27 | 上海市城市建设设计研究总院（集团）有限公司 | Compound shearing alignment pin |
| CN107905455A (en) * | 2017-12-01 | 2018-04-13 | 武汉理工大学 | A kind of precast concrete bar connecting grout sleeve and preparation method thereof |
| CN108678287A (en) * | 2018-04-27 | 2018-10-19 | 东南大学 | A kind of bar connecting full grout sleeve of slurry pin bank conjunction |
| CN108797898A (en) * | 2018-08-08 | 2018-11-13 | 西南科技大学 | Composite connector and its assemble method for FRP tendons |
| CN108914779A (en) * | 2018-08-01 | 2018-11-30 | 武汉理工大学 | The anchorage length of reserved grout hole bolt anchor head connection reinforcing bar determines method |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN112095441A (en) * | 2020-08-13 | 2020-12-18 | 盐城工学院 | Construction process for connecting assembled reinforced concrete bridge pier column and capping beam |
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| CN87104226A (en) * | 1986-06-26 | 1988-02-24 | 门田正 | Splice sleeve for reinforcing bars |
| JPH09324495A (en) * | 1996-06-06 | 1997-12-16 | Mitsuchi:Kk | Joint element and jointing method using the element |
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| CN201546375U (en) * | 2009-11-20 | 2010-08-11 | 中煤第三建设（集团）有限责任公司 | Steel bar connector |
| CN202850360U (en) * | 2012-10-22 | 2013-04-03 | 沈阳建筑大学 | Grouting and anchoring type steel bar connection sleeve and manufacturing mould thereof |
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2014
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Patent Citations (9)
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| CN87104226A (en) * | 1986-06-26 | 1988-02-24 | 门田正 | Splice sleeve for reinforcing bars |
| JPH09324495A (en) * | 1996-06-06 | 1997-12-16 | Mitsuchi:Kk | Joint element and jointing method using the element |
| KR20020059077A (en) * | 2000-12-30 | 2002-07-12 | 정세현 | A coupler for connecting between ends of deformed bars for reinforcing concrete |
| CN1639431A (en) * | 2002-02-26 | 2005-07-13 | 克里斯蒂安·L·达尔 | High strength grouted pipe coupler |
| JP2004100444A (en) * | 2003-08-11 | 2004-04-02 | Anderson Technology Kk | Pc steel strand connection structure and connector |
| CN1554842A (en) * | 2003-12-23 | 2004-12-15 | 哈尔滨工业大学 | Double tile reinforced bar connecting sleeve |
| JP2008163556A (en) * | 2006-12-27 | 2008-07-17 | Tokyo Tekko Co Ltd | Reinforcing bar connecting device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612158A (en) * | 2014-12-13 | 2015-05-13 | 广西科技大学 | Grouting method of steel bar connector |
| CN105064618A (en) * | 2015-07-12 | 2015-11-18 | 北京工业大学 | Coiled material steel bar grouting connector |
| CN106894517A (en) * | 2017-02-16 | 2017-06-27 | 上海市城市建设设计研究总院（集团）有限公司 | Compound shearing alignment pin |
| CN107905455A (en) * | 2017-12-01 | 2018-04-13 | 武汉理工大学 | A kind of precast concrete bar connecting grout sleeve and preparation method thereof |
| CN108678287A (en) * | 2018-04-27 | 2018-10-19 | 东南大学 | A kind of bar connecting full grout sleeve of slurry pin bank conjunction |
| CN108914779A (en) * | 2018-08-01 | 2018-11-30 | 武汉理工大学 | The anchorage length of reserved grout hole bolt anchor head connection reinforcing bar determines method |
| CN108914779B (en) * | 2018-08-01 | 2019-10-25 | 武汉理工大学 | The anchorage length of reserved grout hole bolt anchor head connection reinforcing bar determines method |
| CN108797898A (en) * | 2018-08-08 | 2018-11-13 | 西南科技大学 | Composite connector and its assemble method for FRP tendons |
| CN108797898B (en) * | 2018-08-08 | 2023-09-15 | 西南科技大学 | Composite connector for FRP rib and assembling method thereof |
| CN109057170A (en) * | 2018-09-26 | 2018-12-21 | 湖南大学 | A kind of fibre reinforced composites linked system and implementation method based on cement base cementing medium |
| CN112095441A (en) * | 2020-08-13 | 2020-12-18 | 盐城工学院 | Construction process for connecting assembled reinforced concrete bridge pier column and capping beam |
| CN112095441B (en) * | 2020-08-13 | 2022-01-28 | 盐城工学院 | Construction process for connecting assembled reinforced concrete bridge pier column and capping beam |
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| CN103899044B (en) | 2016-03-16 |
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