CN103758291B - A kind of shearing enhancement mode half grout sleeve - Google Patents

A kind of shearing enhancement mode half grout sleeve Download PDF

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Publication number
CN103758291B
CN103758291B CN201410034814.7A CN201410034814A CN103758291B CN 103758291 B CN103758291 B CN 103758291B CN 201410034814 A CN201410034814 A CN 201410034814A CN 103758291 B CN103758291 B CN 103758291B
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CN
China
Prior art keywords
sleeve
grout
shearing
enhancement mode
groove
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CN201410034814.7A
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Chinese (zh)
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CN103758291A (en
Inventor
潘金龙
马军卫
尹万云
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东南大学
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Abstract

The invention discloses 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 provided with grouting mouth and grout outlet on the sidewall near sleeve body end position; Sidewall along sleeve body is provided with bolt hole, is provided with shearing bolt in described bolt hole.It is extensive that the present invention has material source, the advantages such as processing and fabricating is simple, dependable performance, substantially improve current cast iron, Cast-steel Sleeve makes numerous and diverse, cost is higher, machinery milling sleeve processing time consuming such as to be taken a lot of work at the drawback, can be widely used in prefabricated concrete structure, there is wide future in engineering applications.

Description

A kind of shearing enhancement mode half grout sleeve

Technical field

The invention belongs to construction engineering technical field, particularly a kind of slurry anchor formula sleeve connector for bar connecting between precast unit.

Background technology

Prefabricated assembled concrete structure, as a kind of form of structure meeting 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.The construction techniques of prefabrication and assembly construction is adopted effectively to economize on resources and the energy, improve material and realize the utilization rate in building energy conservation and structural performance, overcome construction plant and the ambient conditions restriction 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 realizing " 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 China's future architecture.

As everyone knows, the core of prefabricated assembled concrete structure and difficult point are the connectivity problems of reinforcing bar.Common bar connecting form has mechanical connection, be welded to connect, overlap joint connects, but all deposit upon connection need after connected node place builds the problem of pouring concrete, cementation sleeve connection can pre-plugged in concrete member, during construction, the reinforcing bar that stretches out of another parts is inserted in sleeve corresponding to these parts, then ungauged regions high strength cement mortar is poured into branch sleeve, fill up the gap between sleeve and reinforcing bar, after cement mortar sclerosis, two reinforcing bars just firmly link together, thus reach the object of connection two end bar, connected node place is without the need to building rear pouring concrete, the joint efficiency of node is higher.

At present, China various places put into effect the related specifications of prefabricated concrete structure, in code the connection of reinforcing bar recommend to adopt grout sleeve to connect.This is mainly because compared with other connected mode, grout sleeve connection has following advantage: 1. technology maturation; 2. connect reliable.Engineering practices a large amount of abroad 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 usual other end adopted is the form be threaded.

Press the manufacture craft classification of sleeve at present, sleeve can be divided into: cast iron (steel) sleeve and machine sleeve two class.External bar connecting grout sleeve is generally ductile iron product, domestic grout sleeve adopts cast iron (steel) to pour into a mould or machining usually, machining mainly with rod iron or thick walled steel tube for material, by mechanical milling mode rod iron emptied or the inwall of thick walled steel tube is milled into both definite forms, thus 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 after cementation material has been poured in 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 still more complicated processed by sleeve, processing time consuming is required great effort, unfavorable to reduction 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 that seamless steel pipe or steel pipe can be adopted directly to process, compared with adopting solid rod iron with Milling Process, decrease material consumption, improve the production efficiency of branch sleeve, reduce its cost of production, economic and technical norms are better.

Half grout sleeve disclosed in Chinese patent literature CN102587586A has above-mentioned advantage, but still there is 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, multiple tracks groove is relied on to carry out shearing resistance in sleeve inner, this just requires on the one hand, in order to the requirement of I grade of joint of JGJ107 standard can be reached, the wall thickness making sleeve is larger, the stretching resistance that such guarantee rolls (pressure) the thinnest position of sleeve wall is afterwards greater than the stretching resistance of connecting reinforcement, and this will directly cause sleeve configuration heavy; On the other hand, still there is the problem wasted time and energy in processing multiple tracks groove and/or fin.Though processing cost has substantial degradation than sleeve disclosed in Chinese patent literature CN102116075A, still have the place that can improve.

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 solved: for the deficiencies in the prior art, the present invention proposes a kind of shearing enhancement mode half grout sleeve, and the sleeve solved in existing art exists processing difficulties, high cost disadvantage, under the prerequisite ensureing sleeve connection quality, simplify form of sleeve, reduce 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 sidewall near sleeve body end position; Sidewall along sleeve body is provided with bolt hole, is provided with shearing bolt in described bolt hole.

When utilizing this device to connect two reinforcing bars, a reinforcing bar is inserted into sleeve body inside from elastic rubber sealing ring, and the opening part at its place seals by elastic rubber sealing ring; Another root reinforcing bar is threaded, is 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 arranging shearing bolt on sleeve body, the ring rib on cast iron (steel) sleeve can be replaced, 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 wherein, the tension and compression stress that reinforcing bar is inserted in sleeve body inside is rationally distributed on whole sleeve body, effectively prevent 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, and cost is minimized simultaneously.

Further, in the present invention, the sidewall of the close end of described sleeve body is provided with groove, in described groove, hoop is provided with hoop stirrup.The setting of groove, sleeve body is made to be bottleneck shape, reinforcing bar is under tension and compression effect, the cementation material of sleeve body inside is in Three-phase stress state, cementation material retrains more firm by the sleeve-shaped of interior large outer little bottleneck shape, consider that sleeve body is that common low carbon steel seamless steel tube is made simultaneously, after having suppressed groove thereon, reinforcing bar is under tension effect, easily there is the distortion that resets in groove, therefore on groove, be provided with hoop stirrup, the groove position of sleeve body can be waled by hoop stirrup securely, when reinforcing bar tension, the constraint of sleeve body to cementation material is more firm.

As preferably, in the present invention, described bolt hole have 3 row and often between row 120 degree, interval be distributed in equably on the sidewall of sleeve body.Equally distributed shearing bolt can increase the shear resistance of sleeve body entirety on the one hand, can improve the bond stress between concrete and sleeve body on the other hand, sleeve is firmly anchored in concrete.

As preferably, in the present invention, described shearing bolt is the high-strength bolt of performance rate more than 8.8 grades, ensures 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 mouth on the outer wall of side that elastic rubber sealing ring is housed, and the outer wall of the side be connected with threaded connector is provided with grout outlet.

Further, in the present invention, described grouting mouth and grout outlet are all arranged on the sidewall of the sleeve body installing elastic rubber sealing ring one.

As preferably, in the present invention, described groove is extruding or roll forming.Processing simple and fast.

As preferably, in the present invention, after described groove first adopts roll forming, then the sleeve body outside groove is extruded, hoop stirrup is inserted in groove, then the sleeve body outside groove is carried out 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, using common low carbon steel seamless steel tube as sleeve body material, adopts the mode such as rolling or punching press to process.Material source is extensive on the one hand, and in hinge structure, method for milling processing, than being easier to, can make sleeve cost of production greatly reduce on the other hand;

By arranging shearing bolt and ring-shaped stirrup on sleeve body, substantially increase the shear behavior of sleeve, cost increases few, groove or fin is replaced with shearing bolt, decrease the machining wasted time and energy, sleeve performance and cast steel, cast iron sleeve or machine sleeve maintain an equal level, and even better, and the form of sleeve body simplifies;

Therefore a kind of shearing enhancement mode half grout sleeve of the present invention to have material source extensive, the advantages such as processing and fabricating is simple, dependable performance, substantially improve current cast iron, Cast-steel Sleeve makes numerous and diverse, cost is higher, machinery milling sleeve processing time consuming such as to be taken a lot of work at the drawback, can be widely used in prefabricated concrete structure, there 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; Threaded 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; Post A stretches out reinforcing bar 17; Post B stretches out reinforcing bar 18; Connector internal thread 31; Connector external screw thread 32.

Detailed description of the invention

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 end is internal thread hole 5, threaded connector 3 is provided with in described internal thread hole 5, described threaded connector 3 is 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 being provided with screw thread silk 2.Described sleeve body 4 is provided with grouting mouth 6 on the outer wall of side that elastic rubber sealing ring 12 is housed, and the outer wall of the side be connected with threaded connector 3 is provided with grout outlet 7; Sidewall along sleeve body 4 is provided with bolt hole, described bolt hole have 3 row and often row between interval 120 degree be uniformly distributed on the sidewall of sleeve body 4, in each bolt hole, shearing bolt 11 is all installed, total number of shearing bolt 11, diameter need to calculate according to the kind of connecting reinforcement and bar diameter to determine, and shearing bolt 11 length that stretches into sleeve body 4 is to be no less than 1/4 and the internal diameter being no more than 1/3 sleeve body 4 is advisable, and shearing bolt 11 is the high-strength bolt of performance rate more than 8.8 grades.The sidewall at the two ends of described sleeve body 4 is also provided with the groove 9 enclosed around sleeve body 4 one, the degree of depth of described groove 9 is to be no less than 1/4 and the internal diameter being no more than 1/3 sleeve body 4 is advisable, the mode of roll extrusion can be preferentially adopted to process, or employing matching bottom mould, the mode of top brute force extruding is processed.After groove 9 machines, the sleeve body 4 outside groove 9 is extruded, hoop stirrup 10 is firmly inserted in groove 9, then enlarging is carried out to the sidewall of the sleeve body 4 of crimp outside groove 9, sleeve body 4 crushed element is restored.

Prefabricated assembled pillar is existed to somewhere Nodes and is respectively post A15 and post B16, as shown in Figure 3, for will post A stretching out reinforcing bar 17 and post B stretch out reinforcing bar 18 and be connected.First threaded connector 3 side of shearing enhancement mode half grout sleeve of the present invention is installed on the screw thread silk 2 of longitudinal reinforcement 17 end on post A, internal thread is had in threaded connector 3, engage with the external screw thread on longitudinal reinforcement 17 on post A, after having installed to wish connecting reinforcements all on post A15, stirrup on colligation post, builds pillar concrete.Following docking pillar, post A15 is lifted to pre-installation position, namely post B stretches out the top of reinforcing bar 18, after being aimed at one by one with the reinforcing bar on post B16 by post A15, one end sleeve body 4 being provided with 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 pours into cementation material 8 from the grouting mouth 6 of sleeve body 4, flows out after grout outlet 7 stop grouting until it, and carries out shutoff to the grouting mouth 6 of sleeve body 4 and grout outlet 7.Complete the connection of all the other reinforcing bars of position of joints with method, after the intensity of cementation material 8 reaches design strength in sleeve body 4, namely complete 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 (8)

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 mouth (6) and grout outlet (7) on the sidewall near sleeve body (4) end position; Sidewall along sleeve body (4) is provided with bolt hole, is provided with shearing bolt (11) in described bolt hole; The sidewall of the close end of described sleeve body (4) is provided with groove (9), in described groove (9), hoop is provided with hoop stirrup (10); Described bolt hole have 3 row and often row between 120 degree, interval be distributed in equably on the sidewall of sleeve body (4).
2. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: described shearing bolt (11) is the high-strength bolt of performance rate more than 8.8 grades.
3. 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.
4. according to a kind of shearing enhancement mode half grout sleeve according to claim 1, it is characterized in that: described sleeve body (4) is provided with grouting mouth (6) on the outer wall of side that elastic rubber sealing ring (12) is housed, and the outer wall of the side be connected with threaded connector (3) is provided with grout outlet (7).
5. according to a kind of shearing enhancement mode half grout sleeve according to claim 1, it is characterized in that: described grouting mouth (6) and grout outlet (7) are all arranged on the sidewall of the sleeve body (4) installing elastic rubber sealing ring (12).
6. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: described groove (9) is extruding or roll forming.
7. a kind of shearing enhancement mode half grout sleeve according to claim 1, it is characterized in that: after described groove (9) first adopts roll forming, again the sleeve body (4) in groove (9) outside is extruded, hoop stirrup (10) is inserted in groove (9), then the sleeve body (4) in groove (9) outside is carried out enlarging reset.
8. a kind of shearing enhancement mode half grout sleeve according to claim 1, is characterized in that: the material of described hoop stirrup (10) is structural carbon steel.
CN201410034814.7A 2014-01-24 2014-01-24 A kind of shearing enhancement mode half grout sleeve CN103758291B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN109487958A (en) * 2018-10-22 2019-03-19 北京工业大学 A kind of self-centering half grout sleeve construction of achievable reinforcing bar and the practice

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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
CN104314178B (en) * 2014-10-17 2016-07-06 四川省建筑科学研究院 The concrete reinforcement connection system of bar connecting assembly and composition thereof 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
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
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
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
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
CN108442612B (en) * 2018-03-20 2020-11-06 浙江省建筑科学设计研究院有限公司 Standardized node construction method for connecting and anchoring horizontal and longitudinal steel bars of precast beam

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1167515A (en) * 1995-11-10 1997-12-10 东京铁钢株式会社 Mortar filling type reinforcement joint
KR20020059077A (en) * 2000-12-30 2002-07-12 정세현 A coupler for connecting between ends of deformed bars for reinforcing concrete
JP2004156257A (en) * 2002-11-05 2004-06-03 Fuji Bolt Seisakusho:Kk Fixing structure for reinforcing bar
JP2008163556A (en) * 2006-12-27 2008-07-17 Tokyo Tekko Co Ltd Reinforcing bar connecting device
CN201660972U (en) * 2009-12-31 2010-12-01 北京万科企业有限公司 Novel cement grouting reinforcement connecting joint
CN201943262U (en) * 2010-12-27 2011-08-24 中国建筑第七工程局有限公司 Quick connector of construction reinforcing bars
JP2012112206A (en) * 2010-11-26 2012-06-14 Tokyo Tekko Co Ltd Seal member for connecting bars
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1167515A (en) * 1995-11-10 1997-12-10 东京铁钢株式会社 Mortar filling type reinforcement joint
KR20020059077A (en) * 2000-12-30 2002-07-12 정세현 A coupler for connecting between ends of deformed bars for reinforcing concrete
JP2004156257A (en) * 2002-11-05 2004-06-03 Fuji Bolt Seisakusho:Kk Fixing structure for reinforcing bar
JP2008163556A (en) * 2006-12-27 2008-07-17 Tokyo Tekko Co Ltd Reinforcing bar connecting device
CN201660972U (en) * 2009-12-31 2010-12-01 北京万科企业有限公司 Novel cement grouting reinforcement connecting joint
JP2012112206A (en) * 2010-11-26 2012-06-14 Tokyo Tekko Co Ltd Seal member for connecting bars
CN201943262U (en) * 2010-12-27 2011-08-24 中国建筑第七工程局有限公司 Quick connector of construction reinforcing bars
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN109487958A (en) * 2018-10-22 2019-03-19 北京工业大学 A kind of self-centering half grout sleeve construction of achievable reinforcing bar and the practice

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