CN103758291A - Shearing reinforcing type semi-grouting sleeve - Google Patents
Shearing reinforcing type semi-grouting sleeve Download PDFInfo
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- CN103758291A CN103758291A CN201410034814.7A CN201410034814A CN103758291A CN 103758291 A CN103758291 A CN 103758291A CN 201410034814 A CN201410034814 A CN 201410034814A CN 103758291 A CN103758291 A CN 103758291A
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Abstract
The invention discloses a shearing reinforcing type semi-grouting sleeve which comprises a sleeve body, wherein the sleeve body is of a tubular structure; an elastic rubber sealing ring is arranged at the opening of one end of the sleeve body; a threaded connecting piece is arranged at the opening of the other end of the sleeve body; a grouting hole and a discharge hole are formed in side walls close to the end parts of the sleeve body; bolt holes are formed in the side wall along the sleeve body; anti-shearing bolts are arranged inside the bolt holes. The shearing reinforcing type semi-grouting sleeve has the advantages of wide material resource, simplicity in machining and manufacturing, reliability in property and the like, can greatly overcome the defects that the conventional cast iron or cast iron steel sleeve is complex to manufacture and high in cost, a mechanical milling sleeve is labor and time waste, and the like, can be widely applied to assembled type concrete structures, and has wide engineering application prospects.
Description
Technical field
The invention belongs to construction engineering technical field, particularly a kind of slurry anchor formula sleeve connector connecting for reinforcing bar between precast unit.
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, in developed country, is widely applied.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 after connecting need be after connected node place builds the problem of pouring concrete, cementation sleeve connect can pre-plugged in concrete member, during 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.
In the related specifications of the prefabricated concrete structure that at present, put into effect China various places, rules, the connection recommend adoption grout sleeve of reinforcing bar connects.This be mainly because, compare with other connected mode, grout sleeve connects and to have 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.Grout sleeve is divided into full grout sleeve and half grout sleeve by form of structure, and the joint two ends of full grout sleeve all adopt the mode connecting reinforcement of grouting; Joint one end of half grout sleeve adopts grouting way connecting reinforcement, and the other end adopts non-grouting way connecting reinforcement, and what the other end adopted conventionally is the form being threaded.
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 that to take rod iron or thick walled steel tube be 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, and the profile of cast iron (steel) sleeve is heavy, and technical requirements is higher; Although machine sleeve is durable, 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 CN102116075A discloses a kind of Novel cement grouting Ribbed Bar jointing, its essence is a kind of novel half grout sleeve.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, and 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 when steel bar stretching or compression, shearing resistance successful, but sleeve is processed still more complicated, processing time consuming effort, unfavorable to reducing sleeve cost.
Chinese patent literature CN102587586A discloses a kind of Novel cement grouting screw thread composite reinforcing steel bar jointing, and its essence is also a kind of novel half grout sleeve.Mainly be with the difference of half grout sleeve mentioned in Chinese patent literature CN102116075A, by thread bush, threaded reinforcing bar is connected with sleeve part, make sleeve part can adopt seamless steel pipe or steel pipe directly to process, adopt solid rod iron to compare with Milling Process, reduced material consumption, promoted the production efficiency of branch sleeve, reduced its cost of production, economic and technical norms are better.
Disclosed half grout sleeve of Chinese patent literature CN102587586A has above-mentioned advantage, but still has following problem: 1. described groove and/or fin adopt casting or machining to form, and the drawback of processing time consuming effort is solved at all; 2. described groove and/or fin adopt rolling or spin-on process to make, in sleeve inner, rely on multiple tracks groove to carry out shearing resistance, this just requires on the one hand, in order to reach the requirement of the I level joint of JGJ107 standard, the wall thickness of making sleeve is larger, like this guarantee roll sleeve wall after (pressure) the stretching resistance of thin position be greater than the stretching resistance of connecting reinforcement, this will directly cause sleeve configuration heavy; On the other hand, still there is the problem wasting time and energy in processing multiple tracks groove and/or fin.Though processing cost has substantial degradation than the disclosed sleeve of Chinese patent literature CN102116075A, still having can improved place.
To sum up, there is processing difficulties, form heaviness, high cost disadvantage in existing half grout sleeve, is unfavorable for the development of current China housing industrialization and industrialization of construction industry.
Summary of the invention
The technical problem solving: for the deficiencies in the prior art, the present invention proposes a kind of shearing enhancement mode half grout sleeve, and the sleeve solving in existing art exists processing difficulties, high cost disadvantage, is guaranteeing under the prerequisite of sleeve quality of connection, simplify form of sleeve, reduced sleeve cost.
Technical scheme: for solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of shearing enhancement mode half grout sleeve, comprise sleeve body, described sleeve body is tubular structure, the opening part that sleeve body is one is provided with elastic rubber sealing ring, the opening part of sleeve body other end is provided with threaded connector, and is respectively equipped with grouting mouth and grout outlet on the close sidewall of sleeve body end position; Sidewall along sleeve body is provided with bolt hole, in described bolt hole, shearing bolt is installed.
While utilizing this device to connect two reinforcing bars, a reinforcing bar is inserted into sleeve body inside from elastic rubber sealing ring, and elastic rubber sealing ring is by the opening part sealing at its place; On another root reinforcing bar, be threaded, be connected and fixed with threaded connector; From grouting mouth, pour into the part that cementation material is filled with sleeve body hollow core, unnecessary cementation material flows out from grout outlet.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 inner tension and compression stress that inserts reinforcing bar of sleeve body is rationally distributed on whole sleeve body, has effectively avoided the stress raisers on sleeve body, the resistance to tension of sleeve body is significantly improved.Make the form of sleeve body be simplified, weight is alleviated simultaneously, and cost is minimized.
Further, in the present invention, on the sidewall of the close end of described sleeve body, be provided with groove, in described groove, hoop is provided with hoop stirrup.The setting of groove, make sleeve body be bottleneck shape, reinforcing bar is under tension and compression effect, the cementation material of sleeve body inside is in Three-phase stress state, the sleeve-shaped of interior large outer bottle mouth shape retrains more firmly by cementation material, consider that sleeve body is that common low carbon steel seamless steel tube is made simultaneously, when having suppressed after groove thereon, reinforcing bar is under tension effect, easily there is the distortion that resets in groove, therefore be provided with hoop stirrup on groove, hoop stirrup can be waled the groove position of sleeve body securely, when reinforcing bar tension, sleeve body is more firm to the constraint of cementation material.
As preferably, in the present invention, described bolt hole has interval 120 degree between 3 row and every row to be distributed in equably on the sidewall of sleeve body.Equally distributed shearing bolt can increase the shear resistance of sleeve body integral body on the one hand, can improve the bond stress between concrete and sleeve body on the other hand, and sleeve is firmly anchored in concrete.
As preferably, in the present invention, described shearing bolt is 8.8 grades of above high-strength bolts of performance rate, guarantees that the shear behavior of shearing bolt is enough.
As preferably, in the present invention, sleeve body is that mild steel seamless steel pipe processes.Mild steel has good Anti-pull-press performance, and for the Anti-pull-press intensity of sleeve body provides safeguard, and material source is extensive, and cost is low.
Further, in the present invention, described sleeve body is provided with grouting mouthful on the outer wall of a side that elastic rubber sealing ring is housed, and on the outer wall of the side being connected with connector, is provided with grout outlet.
Further, in the present invention, described grouting mouth and grout outlet are all arranged on the sidewall near the sleeve body of one of installation elastic rubber sealing ring.
As preferably, in the present invention, described groove is extruding or roll forming.Processing simple and fast.
As preferably, in the present invention, described groove first adopts after roll forming, then the sleeve body in groove outside is pushed, and hoop stirrup is inserted in groove, then the sleeve body in groove outside is carried out to enlarging reset.
As preferably, in the present invention, the material of described hoop stirrup is structural carbon steel, if condition license can adopt carbon constructional quality steel and after heat treatment use.
Beneficial effect:
A kind of shearing enhancement mode half grout sleeve of the present invention, usings common low carbon steel seamless steel tube as sleeve body material, adopts the modes such as rolling or punching press to process.Material source is extensive on the one hand, and in relative prior art, method for milling processing, than being easier to, can make sleeve cost of production greatly reduce on the other hand;
By shearing bolt and ring-shaped stirrup are set on sleeve body, greatly improved the shear behavior of sleeve, cost increases few, with shearing bolt, replace groove or fin, reduced the machining wasting time and energy, sleeve performance and cast steel, cast iron sleeve or machine sleeve maintain an equal level, even better, and the form of sleeve body is simplified;
Therefore it is extensive that a kind of shearing enhancement mode half grout sleeve of the present invention 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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of joint pin A of the present invention and post B.
In figure: reinforcing bar A1; Screw thread silk 2; Connector 3; Sleeve body 4; Internal thread hole 5; Grouting mouth 6; Grout outlet 7; Cementation material 8; Groove 9; Hoop stirrup 10; Shearing bolt 11; Elastic rubber sealing ring 12; Reinforcing bar B13; Post A15; Post B16; On post A, stretch out reinforcing bar 17; On post B, stretch out reinforcing bar 18; Connector internal thread 31; Connector external screw thread 32.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As depicted in figs. 1 and 2, the full grout sleeve of a kind of shearing enhancement mode, comprises sleeve body 4, and described sleeve body 4 is tubular structure, utilizes mild steel seamless steel pipe to process.The opening part that sleeve body is 4 one is provided with elastic rubber sealing ring 12, the opening part of sleeve body 4 other ends is internal thread hole 5, in described internal thread hole 5, be provided with threaded connector 3, on described threaded connector 3, be respectively equipped with connector internal thread 31 and connector external screw thread 32, one that is provided with elastic rubber sealing ring 12 can directly be inserted reinforcing bar B13, is provided with of threaded connector 3 and is threaded connection part 3 and is connected with the reinforcing bar A1 that is provided with screw thread silk 2.Described sleeve body 4 is provided with grouting mouth 6 on the outer wall of a side that elastic rubber sealing ring 12 is housed, and on the outer wall of the side being connected with connector 3, is provided with grout outlet 7; Sidewall along sleeve body 4 is provided with bolt hole, described bolt hole has between 3 row and every row interval 120 degree and is uniformly distributed on the sidewall of sleeve body 4, shearing bolt 11 is all installed in each bolt hole, total number of shearing bolt 11, diameter need to be according to kind and the bar diameter calculative determinations of connecting reinforcement, and the length that shearing bolt 11 stretches into sleeve body 4 be no less than 1/4 and the internal diameter that is no more than 1/3 sleeve body 4 be advisable, and shearing bolt 11 is that performance rate is at more than 8.8 grades high-strength bolts.On the sidewall at the two ends of described sleeve body 4, be also provided with the groove 9 around sleeve body 4 one circles, the degree of depth of described groove 9 be no less than 1/4 and the internal diameter that is no more than 1/3 sleeve body 4 be advisable, can preferentially adopt the mode of roll extrusion to process, or employing matching bottom mould, the mode of the powerful extruding in top is processed.After groove 9 machines, the sleeve body 4 in groove 9 outsides is pushed, hoop stirrup 10 is firmly inserted in groove 9, then the sidewall of the sleeve body 4 of groove 9 outside crimps is carried out to enlarging, sleeve body 4 crushed elements are restored.
To somewhere Nodes, exist prefabricated assembled pillar to be respectively post A15 and post B16, as shown in Figure 3, wish will be stretched out reinforcing bar 17 and on post B, stretch out reinforcing bar 18 and be connected on post A.First shearing enhancement mode half grout sleeve connector 3 one sides of the present invention are installed on the screw thread silk 2 of the upper longitudinal reinforcement of post A 17 ends, in connector 3, there is internal thread, with the external screw thread engagement on the upper longitudinal reinforcement 17 of post A, after having installed to the upper all wish connecting reinforcements of post A15, stirrup on colligation post, builds pillar concrete.Next dock pillar, post A15 is lifted to pre-installation position, be on post B, to stretch out the top of reinforcing bar 18, after post A15 is aimed at one by one with the reinforcing bar on post B16, one end that sleeve body 4 is provided with to elastic rubber sealing ring 12 is slowly inserted on post B stretches out on reinforcing bar 18.After insertion completes, coupled columns A15 supports, and from the grouting mouth 6 of sleeve body 4, pours into cementation material 8, stops grouting, and the grouting mouth 6 of sleeve body 4 and grout outlet 7 are carried out to shutoff after it flows out grout outlet 7.With method, complete the connection of all the other reinforcing bars of position of joints, in sleeve body 4, the intensity of cementation material 8 reaches after design strength, completes the construction of this node.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. shearing enhancement mode half grout sleeve, it is characterized in that: comprise sleeve body (4), described sleeve body (4) is tubular structure, the opening part that sleeve body is (4) one is provided with elastic rubber sealing ring (12), the opening part of sleeve body (4) other end is provided with threaded connector (3), and is provided with grouting mouthful (6) and a grout outlet (7) on the close sidewall of sleeve body (4) end position; Sidewall along sleeve body (4) is provided with bolt hole, and shearing bolt (11) is installed in described bolt hole.
2. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: on the sidewall of the close end of described sleeve body (4), be provided with groove (9), in described groove (9), hoop is provided with hoop stirrup (10).
3. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: described bolt hole has interval 120 degree between 3 row and every row to be distributed in equably on the sidewall of sleeve body (4).
4. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: described shearing bolt (11) is 8.8 grades of above high-strength bolts of performance rate.
5. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: sleeve body (4) processes for mild steel seamless steel pipe.
6. according to a kind of shearing enhancement mode half grout sleeve claimed in claim 1, it is characterized in that: described sleeve body (4) is provided with grouting mouthful (6) on the outer wall of a side that elastic rubber sealing ring (12) is housed, and on the outer wall of the side being connected with connector (3), is provided with grout outlet (7).
7. according to a kind of shearing enhancement mode half grout sleeve claimed in claim 1, it is characterized in that: described grouting mouthful (6) and grout outlet (7) are all arranged on the sidewall near the sleeve body (4) of (12) one of installation elastic rubber sealing rings.
8. a kind of shearing enhancement mode half grout sleeve according to claim 2, is characterized in that: described groove (9) is extruding or roll forming.
9. a kind of shearing enhancement mode half grout sleeve according to claim 2, it is characterized in that: described groove (9) first adopts after roll forming, again the sleeve body (4) in groove (9) outside is pushed, hoop stirrup (10) is inserted in groove (9), then the sleeve body (4) in groove (9) outside is carried out to enlarging reset.
10. a kind of shearing enhancement mode half grout sleeve according to claim 2, is characterized in that: the material of described hoop stirrup (10) is structural carbon steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410034814.7A CN103758291B (en) | 2014-01-24 | 2014-01-24 | A kind of shearing enhancement mode half grout sleeve |
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| CN201410034814.7A CN103758291B (en) | 2014-01-24 | 2014-01-24 | A kind of shearing enhancement mode half grout sleeve |
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| CN103758291A true CN103758291A (en) | 2014-04-30 |
| CN103758291B CN103758291B (en) | 2016-01-27 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104314178A (en) * | 2014-10-17 | 2015-01-28 | 四川省建筑科学研究院 | Reinforcement connection component, concrete reinforcement connection system with same and construction method |
| CN105178516A (en) * | 2015-09-28 | 2015-12-23 | 中国建筑股份有限公司 | Extruded semi-grouting reinforced sleeve with built-in casing, connective structure, and construction method |
| CN105201148A (en) * | 2014-06-26 | 2015-12-30 | 北京市建筑工程研究院有限责任公司 | Split-type steel bar-sleeve semi-grouting joint |
| CN106638953A (en) * | 2017-01-06 | 2017-05-10 | 东南大学 | Prefabricated monolithic reinforced concrete network frame and construction method thereof |
| CN108035493A (en) * | 2018-01-31 | 2018-05-15 | 合肥建工集团有限公司 | A kind of antidetonation assembles half grout sleeve of self-locking |
| CN108301571A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | A kind of antidetonation assembly self-locking half grout sleeve of rolling |
| CN108301570A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | Half grout sleeve processing method of antidetonation self-locking, concrete member processing method |
| CN108301567A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | Antidetonation self-locking rolls half grout sleeve processing method, concrete member processing method |
| CN108442612A (en) * | 2018-03-20 | 2018-08-24 | 浙江省建筑科学设计研究院有限公司 | The standardization joint structure method of the horizontal longitudinal reinforcement connection of precast beam and anchoring |
| CN109930750A (en) * | 2018-05-31 | 2019-06-25 | 华北理工大学 | Reinforced bar sleeve slip casting attachment device and its application |
| CN112482429A (en) * | 2020-11-16 | 2021-03-12 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Replaceable secondary grouting anchor bolt foundation with adjustable anchoring length and replacement and installation method |
| WO2024079666A1 (en) * | 2022-10-12 | 2024-04-18 | Cementos Argos S.A. | Connection system for connecting prefabricated modules |
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| CN109235780A (en) * | 2018-10-22 | 2019-01-18 | 北京工业大学 | A kind of half grouting connection sleeve suitable for highly seismic region and its apply method |
| CN109487958B (en) * | 2018-10-22 | 2021-03-30 | 北京工业大学 | Semi-grouting sleeve structure capable of realizing self-centering of reinforcing steel bars and manufacturing method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105201148A (en) * | 2014-06-26 | 2015-12-30 | 北京市建筑工程研究院有限责任公司 | Split-type steel bar-sleeve semi-grouting joint |
| CN104314178A (en) * | 2014-10-17 | 2015-01-28 | 四川省建筑科学研究院 | Reinforcement connection component, concrete reinforcement connection system with same and construction method |
| CN105178516A (en) * | 2015-09-28 | 2015-12-23 | 中国建筑股份有限公司 | Extruded semi-grouting reinforced sleeve with built-in casing, connective structure, and construction method |
| CN106638953A (en) * | 2017-01-06 | 2017-05-10 | 东南大学 | Prefabricated monolithic reinforced concrete network frame and construction method thereof |
| CN108035493A (en) * | 2018-01-31 | 2018-05-15 | 合肥建工集团有限公司 | A kind of antidetonation assembles half grout sleeve of self-locking |
| CN108301571A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | A kind of antidetonation assembly self-locking half grout sleeve of rolling |
| CN108301570A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | Half grout sleeve processing method of antidetonation self-locking, concrete member processing method |
| CN108301567A (en) * | 2018-01-31 | 2018-07-20 | 合肥建工集团有限公司 | Antidetonation self-locking rolls half grout sleeve processing method, concrete member processing method |
| CN108442612A (en) * | 2018-03-20 | 2018-08-24 | 浙江省建筑科学设计研究院有限公司 | The standardization joint structure method of the horizontal longitudinal reinforcement connection of precast beam and anchoring |
| CN109930750A (en) * | 2018-05-31 | 2019-06-25 | 华北理工大学 | Reinforced bar sleeve slip casting attachment device and its application |
| CN112482429A (en) * | 2020-11-16 | 2021-03-12 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Replaceable secondary grouting anchor bolt foundation with adjustable anchoring length and replacement and installation method |
| WO2024079666A1 (en) * | 2022-10-12 | 2024-04-18 | Cementos Argos S.A. | Connection system for connecting prefabricated modules |
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