CN104131654A - Cement-based grout rebar-splicing coupler for assembling integrated prefabricated concrete structural member, and connecting method - Google Patents
Cement-based grout rebar-splicing coupler for assembling integrated prefabricated concrete structural member, and connecting method Download PDFInfo
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- CN104131654A CN104131654A CN201410291748.1A CN201410291748A CN104131654A CN 104131654 A CN104131654 A CN 104131654A CN 201410291748 A CN201410291748 A CN 201410291748A CN 104131654 A CN104131654 A CN 104131654A
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- connecting reinforcement
- branch sleeve
- coupler
- concrete structural
- precast concrete
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a cement-based grout rebar-splicing coupler for assembling an integrated prefabricated concrete structural member, and a connecting method. In a prefabricated concrete structure, connection of rebars mainly adopts a metal coupler butt-joint method centering axes of the rebars. However, the method requires relatively large wall thickness of the coupler. Meanwhile, a total length of the coupler is relatively long when two ends of the butt-joint metal coupler are anchored by using a cement-based grouting material; and the rolling screw of the rebars is relatively complex and the quality can not be guaranteed easily if one end of the abutment connected metal coupler is connected by a rebar rolling screw. The member provided by the invention comprises a coupler (3). A first connecting rebar (1) and a second connecting rebar (2) are installed in the coupler; the first connecting rebar is in overlap-joint with the second connecting rebar; and the cement-based grouting material (4) is filled between the inner wall of the coupler and the first connecting rebar and the second connecting rebar. The coupler used for assembling the integrated prefabricated concrete structural member is disclosed.
Description
technical field:
the present invention relates to a kind of strength cement-based grouting material bar splicing branch sleeve of assembly integrated precast concrete member.
background technology:
in precast concrete, the many employings of the connection of reinforcing bar can make the metal sleeve docking method of attachment of reinforcing bar axle center centering, but the sleeve net section intensity that the method requires steel reinforcement abutting joints point place be connected reinforced steel bar strength and equate, so sleeve wall thickness is thicker.Meanwhile, if when the metal sleeve two ends that docking connects all adopt strength cement-based grouting material anchoring, the total length of sleeve is also longer; If one end adopts reinforcing bars with rolling spiral shell to link while connecing, reinforcing bars with rolling spiral shell button is comparatively complicated, quality is difficult ensures, these all can cause material and processing cost higher.
summary of the invention:
the object of this invention is to provide a kind of strength cement-based grouting material bar splicing branch sleeve of assembly integrated precast concrete member, by the overlap joint connected mode in branch sleeve after the bending of reinforcing bar link, make the stressed more reasonable of branch sleeve and reinforcing bar, in the time that tension and compression load is born in the connection of reinforced concrete base grouting branch sleeve, force request be can meet, and material and the processing cost of branch sleeve obviously reduced.
above-mentioned object realizes by following technical scheme:
a kind of assembly integrated precast concrete structural element, its composition comprises: branch sleeve, described branch sleeve inside is provided with the first connecting reinforcement, the second connecting reinforcement, the first described connecting reinforcement and described the second connecting reinforcement overlap joint, filling concrete base grouting material between the inwall of described branch sleeve and described the first connecting reinforcement, described the second connecting reinforcement.
described assembly integrated precast concrete structural element, described branch sleeve adopts the seamless steel pipe of low-carbon (LC) to form through rolling and processing, described outer wall of steel pipe after roll extrusion has annular or spiral groove along its length, and inwall along its length identical roll extrusion position has annular or the projection of spiral groove.
described assembly integrated precast concrete structural element, is characterized in that: the overlap reinforcing bar of the first described connecting reinforcement and the second described connecting reinforcement is bent into the shape of one section of straight line or one section of curve or multistage straight line or multistage straight line and curve combination.
described assembly integrated precast concrete structural element, the bending angle of the overlap reinforcing bar of described the first connecting reinforcement, the second connecting reinforcement adapts to branch sleeve inner space, while inserting in described branch sleeve, rotate backward mutually, the link of described the first connecting reinforcement, the second connecting reinforcement is not mutually hindered in the time that described branch sleeve inside lap connects.
described assembly integrated precast concrete structural element, after the first described connecting reinforcement and the second described connecting reinforcement are in the milk in described branch sleeve, the part axle center of described branch sleeve outside centering.
a kind of method of attachment that utilizes the assembly integrated precast concrete structural element described in claim 1-5, after the link bending of the first connecting reinforcement, be inserted in advance in branch sleeve, after the link bending of the second connecting reinforcement, insert from the described branch sleeve other end, the link of the first described connecting reinforcement and the second described connecting reinforcement is realized axle center centering overlap joint in described branch sleeve; Space filling concrete base grouting material between inwall and the connecting reinforcement of described branch sleeve, the overlap joint that the first connecting reinforcement described in forming, the second described connecting reinforcement are filled under bond state by strength cement-based grouting material in described branch sleeve connects.
beneficial effect:
1. the present invention adopts reinforcing bar after metal sleeve inner bending, to overlap connection, and after the space cement injection base grouting material between sleeve lining and reinforcing bar is connected, both ensured outside reinforcing bar axle center centering, make again total length compare butt muff and reduce half, do not need thicker wall thickness to come with to be connected reinforcing bar etc. strong, do not need the processing of turning spiral shell button, thereby accomplish to connect reliable, saving cost yet.
reinforcing bar of the present invention is that overlap joint connects in strength cement-based grouting material branch sleeve, for making two reinforcing bars beyond join domain keep axle center centering, by bending certain angle and rotate backward and adapt to the connecting reinforcement in sleeve inner space, insert respectively the inner also overlap joint of branch sleeve from sleeve two ends, branch sleeve internal voids pours into after strength cement-based grouting material, and the overlap joint that can realize two connecting reinforcement axle center centerings connects.For the reliability that ensures that this overlap joint connects, branch sleeve is to be formed through rolling and processing by low-carbon (LC) seamless steel pipe, make it have groove and projection that outer wall and inwall are distributed with helical form or ring-type along its length simultaneously, further stiffener is in the co-operation performance of overlap joint switching performance and branch sleeve and the surrounding concrete of branch sleeve inside.This method of attachment reinforcing steel bar bear performance rationally, connect reliable, simple to operate.
reinforcing bar connection construction that the present invention realizes is simple to operate, quality is easy to ensure, job site is dry operation substantially, process does not need complicated plant equipment and facility, can make the environmental protection and energy saving of precast concrete building course, reduce costs, save construction fund, avoid all disadvantages of traditional reinforcing bar connected mode.
connecting reinforcement of the present invention is axle center centering in branch sleeve outside, makes it stressed more reasonable.Connecting reinforcement is bending overlap joint in branch sleeve inside, can further strengthen connection effect, and therefore switching performance is reliable, is suitable for the construction feature of housing industrialization precast concrete.
brief description of the drawings:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is structural representations of the first embodiment of the present invention.
accompanying drawing 3 is A-A sectional views of accompanying drawing 2.
accompanying drawing 4 is B-B sectional views of accompanying drawing 2.
accompanying drawing 5 is top views of accompanying drawing 2.
accompanying drawing 6 is C-C sectional views of accompanying drawing 2.
accompanying drawing 7 is D-D sectional views of accompanying drawing 2.
accompanying drawing 8 is structural representations of the second embodiment of the present invention.
accompanying drawing 9 is front views of accompanying drawing 8.
accompanying drawing 10 is E-E sectional views of accompanying drawing 9.
accompanying drawing 11 is F-F sectional views of accompanying drawing 9.
accompanying drawing 12 is top views of accompanying drawing 9.
accompanying drawing 13 is G-G sectional views of accompanying drawing 9.
accompanying drawing 14 is H-H sectional views of accompanying drawing 9.
accompanying drawing 15 is the present invention's the first connecting reinforcement, the second connecting reinforcement link schematic diagrames while being bent into one section of rectilinear form.
accompanying drawing 16 is the present invention's the first connecting reinforcement, the second connecting reinforcement link schematic diagrames while being bent into one section of curve shape.
accompanying drawing 17 is the present invention's the first connecting reinforcement, the second connecting reinforcement link schematic diagrames while being bent into multistage rectilinear form.
accompanying drawing 18 is the present invention's the first connecting reinforcement, the second connecting reinforcement link schematic diagrames while being bent into multistage straight line and curve combination shape.
in figure: 1 is that the first connecting reinforcement, 2 is second connecting reinforcements, the 3rd, branch sleeve, the 4th, strength cement-based grouting material.
detailed description of the invention:
embodiment 1:
a kind of assembly integrated precast concrete structural element, its composition comprises: branch sleeve 3, described branch sleeve inside is provided with the first connecting reinforcement 1, the second connecting reinforcement 2, the first described connecting reinforcement and described the second connecting reinforcement overlap joint, filling concrete base grouting material 4 between the inwall of described branch sleeve and described the first connecting reinforcement, described the second connecting reinforcement.
described branch sleeve adopts the seamless steel pipe of low-carbon (LC) to form through rolling and processing, and the described outer wall of steel pipe after roll extrusion has annular groove along its length, and inwall has annular projection in identical roll extrusion position along its length.
the overlap reinforcing bar of the first described connecting reinforcement and the second described connecting reinforcement is bent into one section of straight line.
the bending angle of the overlap reinforcing bar of described the first connecting reinforcement, the second connecting reinforcement adapts to branch sleeve inner space, while inserting in described branch sleeve, rotate backward mutually, the link of described the first connecting reinforcement, the second connecting reinforcement is not mutually hindered in the time that described branch sleeve inside lap connects.
after the first described connecting reinforcement and the second described connecting reinforcement are in the milk in described branch sleeve, the part axle center of described branch sleeve outside centering.
embodiment 2:
a kind of assembly integrated precast concrete structural element, its composition comprises: branch sleeve 3, described branch sleeve inside is provided with the first connecting reinforcement 1, the second connecting reinforcement 2, the first described connecting reinforcement and described the second connecting reinforcement overlap joint, filling concrete base grouting material 4 between the inwall of described branch sleeve and described the first connecting reinforcement, described the second connecting reinforcement.
described branch sleeve adopts the seamless steel pipe of low-carbon (LC) to form through rolling and processing, and the described outer wall of steel pipe after roll extrusion has spiral groove along its length, and inwall along its length identical roll extrusion position has the projection of spiral groove.
the overlap reinforcing bar of the first described connecting reinforcement and the second described connecting reinforcement is bent into the shape of one section of straight line.
the bending angle of the overlap reinforcing bar of described the first connecting reinforcement, the second connecting reinforcement adapts to branch sleeve inner space, while inserting in described branch sleeve, rotate backward mutually, the link of described the first connecting reinforcement, the second connecting reinforcement is not mutually hindered in the time that described branch sleeve inside lap connects.
after the first described connecting reinforcement and the second described connecting reinforcement are in the milk in described branch sleeve, the part axle center of described branch sleeve outside centering.
embodiment 3:
above-mentioned assembly integrated precast concrete structural element, the overlap reinforcing bar of the first described connecting reinforcement and the second described connecting reinforcement is bent into the shape of one section of curve or multistage straight line or multistage straight line and curve combination, insert from branch sleeve two ends respectively, while inserting branch sleeve, rotate backward separately certain angle, and connect the space cement injection base grouting material between described branch sleeve inwall and connecting reinforcement in branch sleeve inside lap.
embodiment 4:
a kind of method of attachment that utilizes the assembly integrated precast concrete structural element described in embodiment 1-3, after the link bending of the first connecting reinforcement, be inserted in advance in branch sleeve, after the link bending of the second connecting reinforcement, insert from the described branch sleeve other end, the link of the first described connecting reinforcement and the second described connecting reinforcement is realized axle center centering overlap joint in described branch sleeve; Space filling concrete base grouting material between inwall and the connecting reinforcement of described branch sleeve, the overlap joint that the first connecting reinforcement described in forming, the second described connecting reinforcement are filled under bond state by strength cement-based grouting material in described branch sleeve connects.
Claims (6)
1. an assembly integrated precast concrete structural element, its composition comprises: branch sleeve, it is characterized in that: described branch sleeve inside is provided with the first connecting reinforcement, the second connecting reinforcement, the first described connecting reinforcement and described the second connecting reinforcement overlap joint, filling concrete base grouting material between the inwall of described branch sleeve and described the first connecting reinforcement, described the second connecting reinforcement.
2. assembly integrated precast concrete structural element according to claim 1, it is characterized in that: described branch sleeve adopts the seamless steel pipe of low-carbon (LC) to form through rolling and processing, described outer wall of steel pipe after roll extrusion has annular or spiral groove along its length, and inwall along its length identical roll extrusion position has annular or the projection of spiral groove.
3. assembly integrated precast concrete structural element according to claim 1 and 2, is characterized in that: the overlap reinforcing bar of the first described connecting reinforcement and the second described connecting reinforcement is bent into the shape of one section of straight line or one section of curve or multistage straight line or multistage straight line and curve combination.
4. according to the assembly integrated precast concrete structural element described in claim 1 or 2 or 3, it is characterized in that: the bending angle of the overlap reinforcing bar of described the first connecting reinforcement, the second connecting reinforcement adapts to branch sleeve inner space, while inserting in described branch sleeve, rotate backward mutually, the link of described the first connecting reinforcement, the second connecting reinforcement is not mutually hindered in the time that described branch sleeve inside lap connects.
5. according to the assembly integrated precast concrete structural element described in claim 1 or 2 or 3 or 4, it is characterized in that: after the first described connecting reinforcement and the second described connecting reinforcement are in the milk in described branch sleeve, the part axle center of described branch sleeve outside centering.
6. one kind is utilized the method for attachment of the described assembly integrated precast concrete structural element of one of claim 1-5, it is characterized in that: after the link bending of the first connecting reinforcement, be inserted in advance in branch sleeve, after the link bending of the second connecting reinforcement, insert from the described branch sleeve other end, the link of the first described connecting reinforcement and the second described connecting reinforcement is realized axle center centering overlap joint in described branch sleeve; Space filling concrete base grouting material between inwall and the connecting reinforcement of described branch sleeve, the overlap joint that the first connecting reinforcement described in forming, the second described connecting reinforcement are filled under bond state by strength cement-based grouting material in described branch sleeve connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410291748.1A CN104131654A (en) | 2014-06-26 | 2014-06-26 | Cement-based grout rebar-splicing coupler for assembling integrated prefabricated concrete structural member, and connecting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410291748.1A CN104131654A (en) | 2014-06-26 | 2014-06-26 | Cement-based grout rebar-splicing coupler for assembling integrated prefabricated concrete structural member, and connecting method |
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| CN104131654A true CN104131654A (en) | 2014-11-05 |
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| CN201410291748.1A Pending CN104131654A (en) | 2014-06-26 | 2014-06-26 | Cement-based grout rebar-splicing coupler for assembling integrated prefabricated concrete structural member, and connecting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514098A (en) * | 2017-09-15 | 2017-12-26 | 江苏和天下节能科技有限公司 | A kind of attachment structure of thick long knuckle reinforcing bar |
| CN108360753A (en) * | 2018-02-01 | 2018-08-03 | 中国十七冶集团有限公司 | A kind of node connecting structure of fabricated shear wall |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095389A (en) * | 1976-04-20 | 1978-06-20 | Ccl Systems Limited | Joined concrete bodies and method of joining same |
| CN1169172A (en) * | 1995-11-22 | 1997-12-31 | 东京铁钢株式会社 | Mortar-filled reinforcing joint |
| CN202176063U (en) * | 2011-06-17 | 2012-03-28 | 中冶建筑研究总院有限公司 | Cement grout rebar connecting joint |
| WO2013016541A1 (en) * | 2011-07-27 | 2013-01-31 | Yee Alfred A | Splice sleeve with elliptical or compound curve cross section |
| CN103452246A (en) * | 2013-07-09 | 2013-12-18 | 东南大学 | Grouted deformed steel tube sleeve abutted and connected by steel bar grouting anchor |
-
2014
- 2014-06-26 CN CN201410291748.1A patent/CN104131654A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095389A (en) * | 1976-04-20 | 1978-06-20 | Ccl Systems Limited | Joined concrete bodies and method of joining same |
| CN1169172A (en) * | 1995-11-22 | 1997-12-31 | 东京铁钢株式会社 | Mortar-filled reinforcing joint |
| CN202176063U (en) * | 2011-06-17 | 2012-03-28 | 中冶建筑研究总院有限公司 | Cement grout rebar connecting joint |
| WO2013016541A1 (en) * | 2011-07-27 | 2013-01-31 | Yee Alfred A | Splice sleeve with elliptical or compound curve cross section |
| CN103452246A (en) * | 2013-07-09 | 2013-12-18 | 东南大学 | Grouted deformed steel tube sleeve abutted and connected by steel bar grouting anchor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514098A (en) * | 2017-09-15 | 2017-12-26 | 江苏和天下节能科技有限公司 | A kind of attachment structure of thick long knuckle reinforcing bar |
| CN107514098B (en) * | 2017-09-15 | 2020-04-07 | 江苏和天下节能科技股份有限公司 | Connecting structure of thick and long angle steel bars |
| CN108360753A (en) * | 2018-02-01 | 2018-08-03 | 中国十七冶集团有限公司 | A kind of node connecting structure of fabricated shear wall |
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Application publication date: 20141105 |
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