CN209837285U - Novel prefabricated reinforced concrete frame node - Google Patents
Novel prefabricated reinforced concrete frame node Download PDFInfo
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- CN209837285U CN209837285U CN201920463008.XU CN201920463008U CN209837285U CN 209837285 U CN209837285 U CN 209837285U CN 201920463008 U CN201920463008 U CN 201920463008U CN 209837285 U CN209837285 U CN 209837285U
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Abstract
The utility model discloses a novel precast reinforced concrete frame node, including first precast concrete post, second precast concrete post, first precast reinforced concrete roof beam, second precast reinforced concrete roof beam, first precast concrete post and second precast concrete post symmetric arrangement, first precast reinforced concrete roof beam and second precast reinforced concrete roof beam symmetric arrangement, concreting forms wholly between first precast concrete post, second precast concrete post, first precast reinforced concrete roof beam, the second precast reinforced concrete roof beam; a first grouting sleeve is embedded in one end, facing the second precast concrete column, of the first precast concrete column, and a first straight thread sleeve is embedded in one end, facing the first precast concrete column, of the second precast concrete column. Through the utility model discloses, set up behind the node district reinforcing bar and can effectual improvement scene assemble the efficiency of construction, the chaotic problem of node district reinforcing bar has also been solved to the problem that can effectual solution transportation difficulty.
Description
Technical Field
The utility model discloses a novel prefabricated reinforced concrete frame node belongs to building engineering concrete frame structure technical field.
Background
Under the active advocation of the national vigorous development of fabricated buildings, fabricated concrete structures are paid extensive attention, and fabricated concrete frame structures are structural systems with better overall structure performance and seismic performance and more research and application in the fabricated structures. The existing assembled concrete frame structure generally adopts common concrete and common steel bars, key technical problems that node steel bars are crowded, disordered in assembling, the node quality is not easy to guarantee and the like generally exist, and the steel bars with certain length can be extended from the beam ends, so that assembling and transporting difficulties are easily caused. The above problems limit the application and development of the fabricated concrete frame structure. The precast beam of the node of the utility model is divided into two forms, one is that a straight thread sleeve is reserved at one end part of the beam, and the other is that a grouting sleeve with a corresponding number is reserved at one end part of the beam; the prefabricated column and the prefabricated beam adopt the same construction method; therefore, the problems of difficulty in assembling and transporting and disordered node assembling are effectively solved, and the technical system of the assembly type concrete frame structure is expanded.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, a novel prefabricated reinforced concrete frame node is provided, this steel bar connection mode adopts straight thread sleeve and the telescopic combination of grout.
The utility model aims at realizing the above, a novel prefabricated reinforced concrete frame node, which is characterized in that the prefabricated reinforced concrete frame node comprises a first prefabricated concrete column, a second prefabricated concrete column, a first prefabricated reinforced concrete beam and a second prefabricated reinforced concrete beam, wherein the first prefabricated concrete column and the second prefabricated concrete column are symmetrically arranged, the first prefabricated reinforced concrete beam and the second prefabricated reinforced concrete beam are symmetrically arranged, and the first prefabricated concrete column, the second prefabricated concrete column, the first prefabricated reinforced concrete beam and the second prefabricated reinforced concrete beam are spliced to form a node area;
a first grouting sleeve is embedded in one end, facing a second precast concrete column, of the first precast concrete column, and a first straight thread sleeve is embedded in one end, facing the first precast concrete column, of the second precast concrete column;
a second straight thread sleeve is embedded in one end, facing the second precast reinforced concrete beam, of the first precast reinforced concrete beam, and a second grouting sleeve is embedded in one end, facing the first precast reinforced concrete beam, of the second precast reinforced concrete beam;
the concrete column is also provided with node column reinforcing steel bars and node beam reinforcing steel bars, a column reinforcing steel bar screw head is arranged at the end part of one end of each node column reinforcing steel bar, the column reinforcing steel bar screw head is screwed and inserted into a first straight thread sleeve pre-embedded in a second precast concrete column, and the other end of each node column reinforcing steel bar is inserted into a first grouting sleeve pre-embedded in a first precast concrete column;
the end part of one end of the node beam steel bar is provided with a beam steel bar screw head, the beam steel bar screw head is screwed and inserted into a second straight thread sleeve pre-embedded in the first precast reinforced concrete beam, and the other end of the node beam steel bar is inserted into a second grouting sleeve pre-embedded in the second precast reinforced concrete beam;
and concrete slurry is poured into a node area formed by assembling the first precast concrete column, the second precast concrete column, the first precast reinforced concrete beam and the second precast reinforced concrete beam, node column steel bars and node beam steel bars are embedded in the concrete slurry by the concrete slurry and are solidified and fixed, and grouting materials are poured into the first grouting sleeve and the second grouting sleeve and are solidified and fixed.
And a plurality of column steel bars are arranged in the first precast concrete column and the second precast concrete column.
A plurality of beam reinforcing steel bars are arranged in the first prefabricated reinforced concrete beam and the second prefabricated reinforced concrete beam.
A novel construction method for prefabricated reinforced concrete frame joints comprises the following steps:
step 1), prefabricating a first precast concrete column, a second precast concrete column, a first precast reinforced concrete beam and a second precast reinforced concrete beam;
step 2), embedding a first grouting sleeve in one end of the first precast concrete column facing the second precast concrete column, and embedding a first straight-thread sleeve in one end of the second precast concrete column facing the first precast concrete column;
step 3), processing the end part of the node column steel bar by using a rolling straight thread process to form a column steel bar screw head, screwing the column steel bar screw head end into a first straight thread sleeve pre-embedded in a second precast concrete column, and anchoring the node column steel bar in the first straight thread sleeve; then inserting the other end of the node column steel bar into a first grouting sleeve pre-embedded in a first precast concrete column;
processing the end part of the node beam steel bar by using a rolling straight thread process to form a beam steel bar thread head, screwing the beam steel bar thread head into a second straight thread sleeve pre-embedded in the first precast reinforced concrete beam, and anchoring the node beam steel bar in the second straight thread sleeve; then inserting the other end of the node beam steel bar into a second grouting sleeve pre-embedded in a second precast reinforced concrete beam;
then, concrete is poured in a node area formed among the first precast concrete column, the second precast concrete column, the first precast reinforced concrete beam and the second precast reinforced concrete beam, and the first precast concrete column, the second precast concrete column, the first precast reinforced concrete beam and the second precast reinforced concrete beam are poured into a whole in the node area through concrete;
and step 4), grouting materials are injected into the first grouting sleeve and the second grouting sleeve, and construction of the prefabricated reinforced concrete frame joint is completed.
And 3), grouting concrete slurry into the node area by using a grouting machine.
In the step 4), grouting materials are grouted into the first grouting sleeve and the second grouting sleeve by using a grouting machine;
reserving a first grouting hole and a first grout outlet on the first grouting sleeve, grouting grout into the first grouting sleeve through the first grouting hole, and plugging the first grout outlet by using a wood plug when the grout uniformly overflows from the first grout outlet of the first grouting sleeve, and stopping grouting operation at the moment;
reserving a second grouting hole and a second grout outlet on the second grouting sleeve, grouting grout into the second grouting sleeve through the second grouting hole, and plugging the second grout outlet by using a wood plug when the second grout outlet of the second grouting sleeve is uniformly overflowed with the grout, and stopping grouting operation at the moment;
completing the grouting work of the first grouting sleeve and the second grouting sleeve; and finishing the construction of the prefabricated reinforced concrete frame joint.
The utility model discloses rational in infrastructure, manufacturing are easy, convenient to use, through the utility model discloses, a novel prefabricated reinforced concrete frame node, post (including first precast concrete post, second precast concrete post), roof beam (including first precast reinforced concrete roof beam, second precast reinforced concrete roof beam) all are prefabricated, are equipped with straight thread sleeve or grout sleeve at roof beam, post one end. Specifically, a first grouting sleeve is embedded in one end, facing a second precast concrete column, of a first precast concrete column, and a first straight-thread sleeve is embedded in one end, facing the first precast concrete column, of the second precast concrete column; the second straight thread sleeve is embedded in the first precast reinforced concrete beam towards one end of the second precast reinforced concrete beam, and the second grouting sleeve is embedded in the second precast reinforced concrete beam towards one end of the first precast reinforced concrete beam. When the beam is assembled, the reinforcing steel bars in the node area (the reinforcing steel bars of the node beam) are screwed into the second straight thread sleeve, then the other end of the reinforcing steel bars is inserted into the second grouting sleeve, and grouting materials are poured; when the column is assembled, the same construction process is adopted for connecting the reinforcing steel bars, namely, the reinforcing steel bars of the node column are firstly screwed into the first straight thread sleeve, then the other end of the reinforcing steel bar is inserted into the first grouting sleeve, and grouting material is poured; and finally, the prefabricated strong connection node is realized.
The method comprises the steps that a straight thread sleeve (comprising a first straight thread sleeve and a second straight thread sleeve) is pre-embedded at one end of a column (comprising a first precast concrete column and a second precast reinforced concrete column) and one end of a beam (comprising a first precast reinforced concrete beam and a second precast reinforced concrete beam), the end part of a steel bar is processed by a rolling straight thread process to form a screw head, and then a pipe wrench or a working wrench is used for screwing the steel bar into the corresponding straight thread sleeve to form connection.
The grouting sleeve (including first grouting sleeve, second grouting sleeve) is pre-buried in the concrete member and fills special high-strength cement base grouting material to the clearance of sleeve and reinforcing bar (including node post reinforcing bar, node beam reinforcing bar), after the grouting material solidifies the reinforcing bar anchor in the sleeve and realize a steel bar connection to prefabricated component.
Has the advantages that: (1) the utility model adopts the straight thread sleeve (comprising the first straight thread sleeve and the second straight thread sleeve) to have firm joint quality, and can realize the full-length arrangement of the bottom stress bar of the beam (the first precast reinforced concrete beam and the second precast reinforced concrete beam), so that the stress of the beam is more reliable; (2) the sleeves (the first straight thread sleeve, the second straight thread sleeve, the first grouting sleeve and the second grouting sleeve) can be pre-embedded in advance, the operation is simple and convenient, no pollution is caused, and the construction is safe and reliable; (3) the utility model adopts the grouting sleeves (the first grouting sleeve and the second grouting sleeve) to effectively reduce dust pollution and noise pollution and save energy consumption; (4) the utility model does not extend the steel bar, which can effectively solve the problem of difficult assembly and transportation; (5) the utility model discloses the node reinforcing bar has corresponding sleeve (first straight thread sleeve, second straight thread sleeve, first grout sleeve, second grout sleeve) to connect, and the position is accurate, has also solved the chaotic problem of node district reinforcing bar simultaneously.
The utility model discloses the chaotic problem of assembly transportation difficulty and nodal region reinforcing bar has effectively been solved to the node, has extended assembled concrete frame structure technical system. The straight thread sleeve joint adopted by the utility model has firm quality, can be prefabricated in advance, and has safe and reliable construction; in addition, the construction efficiency can be effectively improved in the field assembly by arranging the reinforcing steel bars in the node area, and the problem of disordered node assembly can be effectively solved by solving the problem of difficult transportation. Has obvious technical advantages and has large-scale popularization and application prospect.
Drawings
Fig. 1 is the utility model discloses an assembled concrete frame structure nodal connection schematic diagram.
Fig. 2 is the schematic view of the node area straight thread sleeve of the present invention.
Fig. 3 is the utility model discloses a node district grout sleeve sketch map.
In the figure: 1-1 first precast concrete column, 1-2 second precast concrete column, 2-1 first precast reinforced concrete beam, 2-2 second precast reinforced concrete beam, 3 column reinforcing steel bars, 4 beam reinforcing steel bars, 5-1 node column reinforcing steel bars, 5-2 node beam reinforcing steel bars, 6-1 first grouting sleeve, 6-2 second grouting sleeve, 7-1 first straight thread sleeve and 7-2 second straight thread sleeve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
A novel prefabricated reinforced concrete frame node comprises a first prefabricated concrete column 1-1, a second prefabricated concrete column 1-2, a first prefabricated reinforced concrete beam 2-1 and a second prefabricated reinforced concrete beam 2-2, wherein the first prefabricated concrete column 1-1 and the second prefabricated concrete column 1-2 are symmetrically arranged, the first prefabricated reinforced concrete beam 2-1 and the second prefabricated reinforced concrete beam 2-2 are symmetrically arranged, and the first prefabricated concrete column 1-1, the second prefabricated concrete column 1-2, the first prefabricated reinforced concrete beam 2-1 and the second prefabricated reinforced concrete beam 2-2 are spliced to form a node area.
A first grouting sleeve 6-1 is embedded in one end, facing a second precast concrete column 1-2, of the first precast concrete column 1-1, and a first straight thread sleeve 7-1 is embedded in one end, facing the first precast concrete column 1-1, of the second precast concrete column 1-2;
a second straight thread sleeve 7-2 is embedded in one end, facing the second prefabricated reinforced concrete beam 2-2, of the first prefabricated reinforced concrete beam 2-1, and a second grouting sleeve 6-2 is embedded in one end, facing the first prefabricated reinforced concrete beam 2-1, of the second prefabricated reinforced concrete beam 2-2.
The prefabricated concrete column is further provided with node column steel bars 5-1 and node beam steel bars 5-2, a column steel bar screw head is arranged at the end part of one end of each node column steel bar 5-1, the column steel bar screw head is screwed and inserted into a first straight thread sleeve 7-1 pre-embedded in the second prefabricated concrete column 1-2, and the other end of each node column steel bar 5-1 is inserted into a first grouting sleeve 6-1 pre-embedded in the first prefabricated concrete column 1-1.
And a beam steel bar screw head is arranged at the end part of one end of the node beam steel bar 5-2, the beam steel bar screw head is screwed and inserted into a second straight thread sleeve 7-2 pre-embedded in the first precast reinforced concrete beam 2-1, and the other end of the node beam steel bar 5-2 is inserted into a second grouting sleeve 6-2 pre-embedded in the second precast reinforced concrete beam 2-2.
Concrete slurry is poured in a node area formed by splicing the first precast concrete column 1-1, the second precast concrete column 1-2, the first precast reinforced concrete beam 2-1 and the second precast reinforced concrete beam 2-2, node column steel bars 5-1 and node beam steel bars 5-2 are buried in the concrete slurry by the concrete slurry to be solidified and fixed, and grouting slurry is poured in the first grouting sleeve 6-1 and the second grouting sleeve 6-2 to be solidified and fixed.
Furthermore, a plurality of column steel bars 3 are arranged in the first precast concrete column 1-1 and the second precast concrete column 1-2. A plurality of beam reinforcing steel bars 4 are arranged in the first prefabricated reinforced concrete beam 2-1 and the second prefabricated reinforced concrete beam 2-2.
A novel construction method for prefabricated reinforced concrete frame joints comprises the following steps:
step 1), prefabricating a first prefabricated concrete column 1-1, a second prefabricated concrete column 1-2, a first prefabricated reinforced concrete beam 2-1 and a second prefabricated reinforced concrete beam 2-2;
step 2), embedding a first grouting sleeve 6-1 at one end of the first precast concrete column 1-1 facing the second precast concrete column 1-2, and embedding a first straight thread sleeve 7-1 at one end of the second precast concrete column 1-2 facing the first precast concrete column 1-1;
step 3), processing the end part of the node column steel bar 5-1 by using a rolling straight thread process to form a column steel bar thread head, screwing the column steel bar thread head into a first straight thread sleeve 7-1 pre-embedded in a second precast concrete column 1-2, and anchoring the node column steel bar 5-1 in the first straight thread sleeve 7-1; then inserting the other end of the node column steel bar 5-1 into a first grouting sleeve 6-1 pre-embedded in the first precast concrete column 1-1;
processing the end part of the node beam steel bar 5-2 by using a rolling straight thread process to form a beam steel bar thread head, screwing the beam steel bar thread head end into a second straight thread sleeve 7-2 pre-embedded in the first precast reinforced concrete beam 2-1, and anchoring the node beam steel bar 5-2 in the second straight thread sleeve 7-2; then inserting the other end of the node beam steel bar 5-2 into a second grouting sleeve 6-2 pre-embedded in a second precast reinforced concrete beam 2-2;
then, pouring concrete in a node area formed among the first precast concrete column 1-1, the second precast concrete column 1-2, the first precast reinforced concrete beam 2-1 and the second precast reinforced concrete beam 2-2, wherein the first precast concrete column 1-1, the second precast concrete column 1-2, the first precast reinforced concrete beam 2-1 and the second precast reinforced concrete beam 2-2 are poured into the node area through concrete to form a whole;
and step 4), grouting materials are injected into the first grouting sleeve 6-1 and the second grouting sleeve 6-2, and construction of the prefabricated reinforced concrete frame joint is completed.
Further, in the step 3), a grouting machine is used for grouting concrete slurry into the node area.
In the step 4), grouting materials are grouted into the first grouting sleeve 6-1 and the second grouting sleeve 6-2 by using a grouting machine;
reserving a first grouting hole and a first grout outlet on the first grouting sleeve 6-1, grouting grout into the first grouting sleeve 6-1 through the first grouting hole, plugging the first grout outlet by using a wooden plug when the first grout outlet of the first grouting sleeve 6-1 has uniform grout overflowing, and stopping grouting operation;
reserving a second grouting hole and a second grout outlet on the second grouting sleeve 6-2, grouting the grouting material into the second grouting sleeve 6-2 through the second grouting hole, plugging the second grout outlet by using a wood plug when the second grout outlet of the second grouting sleeve 6-2 has uniform grout overflowing, and stopping grouting operation;
completing the grouting work of the first grouting sleeve 6-1 and the second grouting sleeve 6-2; and finishing the construction of the prefabricated reinforced concrete frame joint.
Claims (3)
1. A novel prefabricated reinforced concrete frame node is characterized by comprising a first prefabricated concrete column (1-1), a second prefabricated concrete column (1-2), a first prefabricated reinforced concrete beam (2-1) and a second prefabricated reinforced concrete beam (2-2), wherein the first prefabricated concrete column (1-1) and the second prefabricated concrete column (1-2) are symmetrically arranged, the first prefabricated reinforced concrete beam (2-1) and the second prefabricated reinforced concrete beam (2-2) are symmetrically arranged, and the first prefabricated concrete column (1-1), the second prefabricated concrete column (1-2), the first prefabricated reinforced concrete beam (2-1) and the second prefabricated reinforced concrete beam (2-2) are spliced to form a node area;
a first grouting sleeve (6-1) is embedded in one end, facing a second precast concrete column (1-2), of the first precast concrete column (1-1), and a first straight-thread sleeve (7-1) is embedded in one end, facing the first precast concrete column (1-1), of the second precast concrete column (1-2);
a second straight thread sleeve (7-2) is embedded in one end, facing the second precast reinforced concrete beam (2-2), of the first precast reinforced concrete beam (2-1), and a second grouting sleeve (6-2) is embedded in one end, facing the first precast reinforced concrete beam (2-1), of the second precast reinforced concrete beam (2-2);
the prefabricated concrete column is also provided with node column steel bars (5-1) and node beam steel bars (5-2), a column steel bar screw head is arranged at the end part of one end of each node column steel bar (5-1), the column steel bar screw head is screwed and inserted into a first straight thread sleeve (7-1) pre-buried in a second prefabricated concrete column (1-2), and the other end of each node column steel bar (5-1) is inserted into a first grouting sleeve (6-1) pre-buried in the first prefabricated concrete column (1-1);
a beam steel bar screw head is arranged at the end part of one end of the node beam steel bar (5-2), the beam steel bar screw head is screwed and inserted into a second straight thread sleeve (7-2) pre-embedded in the first precast reinforced concrete beam (2-1), and the other end of the node beam steel bar (5-2) is inserted into a second grouting sleeve (6-2) pre-embedded in the second precast reinforced concrete beam (2-2);
the concrete grout is poured into a node area formed by splicing the first precast concrete column (1-1), the second precast concrete column (1-2), the first precast reinforced concrete beam (2-1) and the second precast reinforced concrete beam (2-2), the node column steel bars (5-1) and the node beam steel bars (5-2) are buried in the concrete grout by the concrete grout and are solidified and fixed, and the grouting grout is poured into the first grouting sleeve (6-1) and the second grouting sleeve (6-2) and is solidified and fixed.
2. The novel prefabricated reinforced concrete frame joint according to claim 1, wherein a plurality of column reinforcements (3) are arranged in each of the first prefabricated concrete column (1-1) and the second prefabricated concrete column (1-2).
3. A novel prefabricated reinforced concrete frame joint according to claim 1, wherein a plurality of beam reinforcements (4) are arranged in each of the first prefabricated reinforced concrete beam (2-1) and the second prefabricated reinforced concrete beam (2-2).
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| CN201920463008.XU CN209837285U (en) | 2019-04-08 | 2019-04-08 | Novel prefabricated reinforced concrete frame node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853730A (en) * | 2019-04-08 | 2019-06-07 | 扬州大学 | A kind of novel precast reinforced concrete frame joint and its method of construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853730A (en) * | 2019-04-08 | 2019-06-07 | 扬州大学 | A kind of novel precast reinforced concrete frame joint and its method of construction |
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