CN106149874B - Prefabricated concrete structure steel bar connecting method - Google Patents
Prefabricated concrete structure steel bar connecting method Download PDFInfo
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- CN106149874B CN106149874B CN201610692734.XA CN201610692734A CN106149874B CN 106149874 B CN106149874 B CN 106149874B CN 201610692734 A CN201610692734 A CN 201610692734A CN 106149874 B CN106149874 B CN 106149874B
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- precast concrete
- steel
- steel bar
- connecting piece
- concrete member
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a novel connecting method for prefabricated concrete structure steel bars. The steel bar connecting node comprises a first precast concrete member and a second precast concrete member, wherein the first steel bar in the first precast concrete member and the second steel bar in the second precast concrete member are respectively provided with sawteeth matched with the connecting piece in the steel sleeve, and the first steel bar and the second steel bar are firmly embedded together to form a whole as a precast member; and a grouting structure is arranged in the steel sleeve in the first precast concrete member. The invention effectively transfers stress through the sawtooth among the steel bars, the mechanical meshing force of the sawtooth among the steel bars and the steel sleeve and the force transfer performance between the steel sleeve and the concrete, and has the advantages of convenient and quick construction, good force transfer performance, firm and reliable connection and the like.
Description
Technical Field
The invention belongs to the technical field of prefabricated concrete member construction, and particularly relates to a novel connecting method for prefabricated concrete structure steel bars.
Background
The steel bar connection mode adopted in the existing precast concrete structure mainly adopts two connection modes of sleeve grouting connection and constraint slurry anchor connection. In practical use, the two connection modes have respective advantages and disadvantages. The sleeve grouting connection mode has the main advantages of reliable connection, but the size of the connection part of the prefabricated concrete structure is smaller, but the size of the currently adopted connection sleeve is larger, the internal structure is complex, the processing and manufacturing cost is high, the process is complex, the steel demand is large, the steel bar connection difficulty is high, the construction is inconvenient, and time and labor are wasted; although the connection mode of the constraint slurry anchor is low in cost, the manufacturing process is complex, the length of the lapped reinforcing steel bars is long, the reinforcing steel bars are wasted, and the construction is not facilitated.
When the two connection modes of sleeve grouting connection and constraint slurry anchor connection are adopted for steel bar connection, steel bar anchoring preformed holes for steel bar anchoring are reserved in the precast concrete structure, and steel bars to be anchored are inserted into the steel bar anchoring preformed holes and then are grouted, so that the steel bar connection process of the precast assembled concrete component is completed. But current reinforcing bar anchor preformed hole is the smooth preformed hole of inner wall, and this hole is bad with the bonding effect who pours the mortar for reinforcing bar overlap joint length increases, and the grout material quantity increases, and economic benefits is relatively poor. In addition, when the prefabricated concrete members are connected by reinforcing steel bars at present, no unified, standard and specific construction method can be followed, and the problems of random and irregular construction operation, complex operation, low constructor, poor connection quality and the like inevitably occur during actual construction.
Disclosure of Invention
Aiming at the problems, the invention provides a novel connecting method for prefabricated concrete structure steel bars.
The technical scheme adopted by the invention is as follows: a novel connecting node of a prefabricated concrete structure steel bar comprises a first prefabricated concrete component and a second prefabricated concrete component;
the first precast concrete member and the second precast concrete member comprise a first steel bar, a second steel bar, a grouting port, a grout outlet, a connecting piece and a steel sleeve; the first precast concrete member and the second precast concrete member are of an upper-lower structure, and are connected with a connecting piece in a steel sleeve through a second steel bar protruding out of the second precast concrete member, and the steel sleeve is embedded in the right lower end of the first precast concrete member; one side of the connecting piece is connected with the second steel bar, and the other side of the connecting piece is connected with the first steel bar; the rightmost side of the steel sleeve is provided with a grout outlet and a grout inlet which are parallel up and down and are the same as the outside.
As a preferred technical scheme: the connecting step of the novel connecting node of the prefabricated concrete structure steel bar comprises
The method comprises the following steps: embedding a connecting piece in the steel sleeve into the first steel bar in a factory, and pouring the connecting piece and the first steel bar together to form a first precast concrete component;
step two: embedding a second precast concrete member with a connecting piece in the steel sleeve through a second steel bar;
step three: injecting slurry through the grouting hole, and plugging the grouting hole and the slurry outlet hole after grouting is finished; and after curing for a period of time, completing the connection of the first precast concrete unit and the second precast concrete unit.
As a preferred technical scheme: both sides of the connecting piece are arranged into saw-tooth structures, and the first reinforcing steel bar and the second reinforcing steel bar are embedded with the connecting piece in a saw-tooth mode.
As a preferred technical scheme: the steel bars of the first precast concrete member and the second precast concrete member are fixedly connected by the special grouting material for the joint.
As a preferred technical scheme: and (4) plugging and maintaining the grouting opening and the grout outlet after grouting is finished, wherein the maintenance period is not less than 28 days.
The invention has the beneficial effects that: the novel steel bar connection method has the advantages of simple structure, reasonable design, capability of simply, conveniently and quickly completing the steel bar connection process of the prefabricated concrete component, capability of effectively transferring stress through mechanical engaging force between steel bars, mechanical engaging force between the steel bars and the sleeve and force transfer performance between the sleeve and concrete, convenience and rapidness in construction, good force transfer performance, firm connection, reliability and the like.
Drawings
FIG. 1 is a schematic cross-sectional view of a first precast concrete unit construction;
FIG. 2 is a schematic cross-sectional view of a second precast concrete unit construction;
FIG. 3 is a schematic cross-sectional view of a steel sleeve configuration;
FIG. 4 is a schematic diagram of a first precast concrete unit and a second precast concrete unit connected by a reinforced saw tooth;
FIG. 5 is a schematic cross-sectional view of the grouting hole and the grout outlet after the grouting is completed and the grout outlet is sealed;
in the figure: the concrete joint comprises 1 first precast concrete member, 2 second precast concrete members, 3 first steel bars, 4 steel sleeves, 5 grout outlets, 6 grout outlets, 7 second steel bars, 8 special grout for joints and 9 connecting pieces.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.
A novel connecting node of a prefabricated concrete structure steel bar comprises a first prefabricated concrete component 1 and a second prefabricated concrete component 2;
the first precast concrete member 1 and the second precast concrete member 2 comprise first reinforcing steel bars 3, second reinforcing steel bars 7, a grouting port 6, a grout outlet 5, a connecting piece 9 and a steel sleeve 4; the first precast concrete member 1 and the second precast concrete member 2 are of an up-down structure, and are connected with a connecting piece 9 in a steel sleeve 4 through a second steel bar 7 protruding out of the second precast concrete member 2, and the steel sleeve 4 is embedded in the right lower end of the first precast concrete member 1; one side of the connecting piece 9 is connected with the second steel bar 7, and the other side is connected with the first steel bar 3; the rightmost side of the steel sleeve 4 is provided with a grout outlet 5 and a grout inlet 6 which are parallel up and down and are the same as the outside.
The novel connecting method of the novel connecting node of the prefabricated concrete structure steel bar comprises the connecting steps of
The method comprises the following steps: embedding a connecting piece 9 in the steel sleeve 4 into the first steel bar 3 in a factory, and pouring the two together to form a first precast concrete component 1;
step two: embedding the second precast concrete member 2 with a connecting piece 9 in the steel sleeve 4 through a second steel bar 7;
step three: grouting is injected through the grouting hole 6, and after grouting is finished, the grouting hole 6 and the grout outlet 5 are plugged; and after curing for a period of time, the connection of the first precast concrete unit 1 and the second precast concrete unit 2 is completed.
Both sides of the connecting piece 9 are arranged to be saw-tooth structures, and the first steel bar 3, the second steel bar 7 and the connecting piece 9 are embedded in a saw-tooth mode.
And the reinforcing steel bars of the first precast concrete member 1 and the second precast concrete member 2 are fixedly connected with a grouting material 8 special for a joint.
And after grouting is finished, plugging and maintaining are required, and the maintenance period is not less than 28 days.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a prefabricated concrete structure steel bar connection node which characterized in that: the prefabricated concrete member comprises a first prefabricated concrete member (1) and a second prefabricated concrete member (2); the first precast concrete member (1) and the second precast concrete member (2) comprise first reinforcing steel bars (3), second reinforcing steel bars (7), a grouting opening (6), a grout outlet (5), a connecting piece (9) and a steel sleeve (4); the first precast concrete component (1) and the second precast concrete component (2) are of an up-down structure, a first steel bar (3) and a second steel bar (7) are respectively embedded in the first precast concrete component (1) and the second precast concrete component (2), the first precast concrete component (1) and the second precast concrete component (2) are connected with a connecting piece (9) in a steel sleeve (4) through the second steel bar (7) protruding out of the second precast concrete component (2), the first steel bar (3) is located outside the steel sleeve (4), the connecting piece (9) is located on one side inside the steel sleeve (4) and is embedded with the first steel bar (3) in a sawtooth manner, and the steel sleeve (4) is embedded in the right lower end of the first precast concrete component (1); one side of the connecting piece (9) is connected with the second steel bar (7), and the other side is connected with the first steel bar (3); the rightmost side of the steel sleeve (4) is provided with a grout outlet (5) and a grout inlet (6) which are parallel up and down and communicated with the outside, both sides of the connecting piece (9) are provided with saw-tooth structures, and the first steel bar (3), the second steel bar (7) and the connecting piece (9) are embedded in a saw-tooth manner; the steel sleeve (4) is of a sawtooth structure with the fit surface of the first steel bar (3) and the second steel bar (7), a grout outlet (5) is formed in the upper portion of the other side corresponding to the sawtooth structure, a grout filling port (6) is formed in the lower portion of the other side corresponding to the sawtooth structure, a grout filling cavity is formed between the sawtooth structure and the grout outlet (5) and between the sawtooth structure and the grout filling port (6), and the grout outlet (5) and the grout filling port (6) which are formed in the steel sleeve extend to the surface of the first precast concrete member (1).
2. The method of connecting a prefabricated concrete structure reinforcing bar connection node according to claim 1, wherein: the connecting step comprises the following steps: embedding a connecting piece (9) in a steel sleeve (4) into a first reinforcing steel bar (3) in a factory, and pouring the two together to form a first precast concrete component (1); step two: embedding a second precast concrete member (2) with a connecting piece (9) in the steel sleeve (4) through a second steel bar (7); step three: grouting is injected through the grouting opening (6), and after grouting is finished, the grouting opening (6) and the grout outlet (5) are plugged; and after curing for a period of time, completing the connection of the first precast concrete unit (1) and the second precast concrete unit (2).
3. The method of connecting a prefabricated concrete structure reinforcing bar connection node according to claim 2, wherein: the reinforcing steel bars of the first precast concrete member (1) and the second precast concrete member (2) are connected and fixed by the special grouting material (8) needing to be connected.
4. The method of connecting a prefabricated concrete structure reinforcing bar connection node according to claim 2, wherein: and (5) plugging and maintaining are required after grouting is finished, and the maintenance period is not less than 28 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610692734.XA CN106149874B (en) | 2016-08-22 | 2016-08-22 | Prefabricated concrete structure steel bar connecting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610692734.XA CN106149874B (en) | 2016-08-22 | 2016-08-22 | Prefabricated concrete structure steel bar connecting method |
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| CN106149874A CN106149874A (en) | 2016-11-23 |
| CN106149874B true CN106149874B (en) | 2020-05-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104301A (en) * | 2017-12-08 | 2018-06-01 | 浙江海洋大学 | Assembled architecture lining connecting structure structural wall |
| CN109610872B (en) * | 2018-12-29 | 2021-03-16 | 北京工业大学 | Reinforced concrete beam column joint edge reinforcing method |
| CN110238963A (en) * | 2019-06-13 | 2019-09-17 | 天津城建大学 | Double-tube type steel bar connecting structure and its construction method between precast concrete |
| CN115126097B (en) * | 2022-07-19 | 2023-07-11 | 重庆交通职业学院 | Prefabricated assembly type structure and connecting node of prefabricated assembly type structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008163556A (en) * | 2006-12-27 | 2008-07-17 | Tokyo Tekko Co Ltd | Reinforcing bar connecting device |
| CN103174221A (en) * | 2013-03-29 | 2013-06-26 | 辽宁宇辉新型建筑材料有限公司 | Component used for embedded pipe limiting lap joint connection |
| CN104314240A (en) * | 2014-11-23 | 2015-01-28 | 沈阳建筑大学 | Grouting anchor type rebar connection sleeve and manufacturing method thereof |
| CN204826429U (en) * | 2015-08-02 | 2015-12-02 | 长安大学 | Cast member reinforcing bar grout connecting piece |
| CN204850063U (en) * | 2015-08-02 | 2015-12-09 | 长安大学 | Prefabricated assembled concrete member's steel bar anchoring connection structure |
| CN206034656U (en) * | 2016-08-22 | 2017-03-22 | 沈阳建筑大学 | Novel connected node of prefabricated prefabricated concrete structure reinforcing bar |
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Effective date of registration: 20200331 Address after: Lixia District, Shandong city of Ji'nan province 250000 Olympic road No. 2666, building A, railway construction Applicant after: CHINA RAILWAY 14TH CONSTRUCTION BUREAU GROUP BUILDING ENGINEERING Co.,Ltd. Address before: 110168 Liaoning province Shenyang Hunnan Hunnan Road No. 9 Applicant before: SHENYANG JIANZHU University |
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