CN110644616A - Precast concrete beam column connection node structure and construction method thereof - Google Patents
Precast concrete beam column connection node structure and construction method thereof Download PDFInfo
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- CN110644616A CN110644616A CN201910928093.7A CN201910928093A CN110644616A CN 110644616 A CN110644616 A CN 110644616A CN 201910928093 A CN201910928093 A CN 201910928093A CN 110644616 A CN110644616 A CN 110644616A
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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
- 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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Abstract
The invention discloses a precast concrete beam-column connection node structure and a construction method thereof, relating to the technical field of assembly type building construction; the prefabricated concrete column is provided with three rows of column connecting pieces, the prefabricated concrete beam is provided with three rows of beam connecting pieces, and the three rows of column connecting pieces and the three rows of beam connecting pieces are horizontally arranged in a staggered manner and are connected and fixed through locking rods; the wing plate, the precast concrete column, the precast concrete beam and the bearing platform are enclosed to form a pouring area, a template does not need to be erected, the construction steps are few, and the connection is reliable.
Description
Technical Field
The invention relates to the technical field of assembly type building construction, in particular to a precast concrete beam-column connection node structure and a construction method thereof.
Background
The prefabricated concrete structure is formed by connecting prefabricated concrete members or components through reinforcing steel bars, connecting pieces or applying prestress, and generally needs to pour concrete on site to form an integral structure.
The structural defects of the existing fabricated building are mainly embodied as the damage of connection nodes between prefabricated components, so that the improvement of the node connection between the prefabricated components is also an important link of the fabricated building construction. The existing joint connection of the precast concrete beam and the column can adopt dry connection and wet connection, the dry connection is that connecting members embedded on a PC member are directly adopted for connection, the construction speed is high, but the prior art still lacks a technical scheme which can well overcome the unstable stress between the connecting members, and the dry connection is relatively less applied in the existing construction.
The wet method connection, namely, the connection steel bars are reserved at the connection nodes of the PC components, cast-in-place connection is carried out through erecting templates, which is also the current mainstream connection mode, but the existing connection mode has the following defects: the wet connection needs to support a template and a bottom support frame, the beam column node is of a folded angle structure, the template is difficult to support, the construction steps are multiple, the operation is complex, and the construction is inconvenient.
Disclosure of Invention
The invention aims to provide a precast concrete beam column connecting node structure which has the characteristics of convenience for pouring and connecting a precast concrete beam and a precast concrete column, no need of erecting a template and reliable connection.
The above object of the present invention is achieved by the following technical solutions:
a precast concrete beam column connection node structure comprises a precast concrete beam and a precast concrete column,
the precast concrete beam is provided with a bearing platform, wing plates are arranged on two sides of the bearing platform in the width direction, and the wing plates are connected to the bearing platform and the precast concrete column; an installation groove for pre-connecting the precast concrete beam is formed between the wing plate and the bearing platform;
the prefabricated concrete column is characterized in that three rows of column connecting pieces are arranged on one side, facing the mounting groove, of the prefabricated concrete column in a rectangular array mode, each column connecting piece comprises an upper first straight rod and a lower first straight rod which are vertically connected to the prefabricated concrete column, and a first arc-shaped rod used for connecting the end portions of the two first straight rods, and the arc opening of each first arc-shaped rod faces the prefabricated concrete column; the length of the first straight rod of the three rows of column connecting pieces is gradually increased from top to bottom;
the end faces, facing the precast concrete columns, of the precast concrete beams are provided with three rows of beam connecting pieces in a rectangular array, each beam connecting piece comprises an upper second straight rod and a lower second straight rod which are vertically connected to the end faces of the precast concrete beams, and a second arc-shaped rod used for connecting the end parts of the two second straight rods, and the arc openings of the second arc-shaped rods face the precast concrete beams; the length of the second straight rod of the three rows of beam connecting pieces is decreased progressively from top to bottom;
when the precast concrete beam is supported on the bearing platform, the three rows of beam connecting pieces and the three rows of column connecting pieces are horizontally arranged in a staggered manner; each beam connector is positioned between two adjacent column connectors; a first slot is formed between the first arc-shaped rod of the first row of column connecting pieces and the second arc-shaped rod of the first row of beam connecting pieces; a second slot is formed between the first arc-shaped rod of the second row of column connecting piece and the second arc-shaped rod of the second row of beam connecting piece; a third slot is formed between the first arc-shaped rod of the third row of column connecting piece and the second arc-shaped rod of the third row of beam connecting piece; the first slot, the second slot and the third slot are all inserted with lock rods, and the lock rods penetrate through wing plates and are connected with sealing plates in a threaded mode; and a cast-in-place part is formed between the precast concrete column and the precast concrete beam in a pouring way.
By adopting the technical scheme, the wing plate is connected to the bearing platform and the precast concrete column; the mounting groove that supplies precast concrete roof beam to connect in advance is formed between pterygoid lamina and the cushion cap, and three rows of post connecting pieces on the precast concrete post are the level dislocation set with three rows of roof beam connecting pieces on the precast concrete roof beam for when the precast concrete roof beam is hung from the top down and is put to the cushion cap, post connecting piece and roof beam connecting piece can not mutual interference. Wear to establish first slot, second slot, third slot respectively through three locking levers and connect on the pterygoid lamina for every locking lever all carries on spacingly to one row of post connecting piece and roof beam connecting piece, improves the tensile strength between precast concrete post and the precast concrete roof beam. Because the first straight-bar length of three rows of post connecting pieces increases progressively from top to bottom, the second straight-bar length of three rows of roof beam connecting pieces decreases progressively from top to bottom for first slot, second slot, third slot are misplaced at horizontal direction and direction of height homogeneous phase, thereby make three locking levers misplace at horizontal direction and direction of height homogeneous phase, make the hookup location distribution of post connecting piece and roof beam connecting piece more even, and the structure atress is more stable. Meanwhile, the wing plate and the lock rod are used as permanent building components, a template does not need to be erected, concrete can be directly poured in an area formed by enclosing the bearing platform, the precast concrete column, the precast concrete beam and the wing plate to form a cast-in-place part, and the precast concrete beam and the precast concrete column are conveniently connected.
The invention is further configured to: the upper surface of the bearing platform is provided with a supporting rod, a vertical sleeve is pre-buried in the precast concrete beam, an opening of the vertical sleeve is positioned on the lower surface of the precast concrete beam, the length of the supporting rod is greater than that of the vertical sleeve, and the outer diameter of the supporting rod is smaller than the inner diameter of the vertical sleeve; the supporting rod is abutted against the inner wall of one side of the vertical sleeve, which is far away from the bearing platform; the one end that the precast concrete post was kept away from to the cushion cap is provided with the first sealed edge of contradicting in the precast concrete roof beam bottom surface.
Through adopting above-mentioned technical scheme, when the precast concrete roof beam supported on the cushion cap, the bracing piece inserted in the vertical sleeve and contradicted in the inner wall that vertical sleeve kept away from cushion cap one side to support the precast concrete roof beam. The length of the supporting rod is greater than that of the vertical sleeve, so that when the precast concrete beam is supported on the supporting rod, a gap for concrete to flow is formed between the bottom surface of the precast concrete beam and the bearing platform; and the external diameter of bracing piece is less than vertical telescopic internal diameter for form the clearance that supplies the concrete circulation between vertical sleeve inner wall and the bracing piece, thereby improve the bonding strength between concrete and the precast concrete roof beam. The first sealing edge can seal the gap between one end of the bearing platform far away from the precast concrete column and the precast concrete beam, so that concrete is prevented from leaking from the gap.
The invention is further configured to: be provided with guide structure between pterygoid lamina and the precast concrete roof beam, guide structure is including setting up in the locating piece of pterygoid lamina inside wall and setting up in the slide rail of precast concrete roof beam side, and the slide rail forms sliding connection with the locating piece.
Through adopting above-mentioned technical scheme, can fix a position the below position of precast concrete roof beam through aim at the locating piece and slowly transfer the precast concrete roof beam with the slide rail to make vertical sleeve can accurately aim at with the bracing piece, and make post connecting piece and roof beam connecting piece hookup location accurate.
The invention is further configured to: a gap is reserved between one side, facing the wing plate, of the sliding rail and the wing plate, and a second sealing edge which is abutted against the side face of the precast concrete beam is arranged on one side, away from the precast concrete column, of the wing plate.
Through adopting above-mentioned technical scheme, the concrete can get into between the side of pterygoid lamina and precast concrete roof beam when concreting, gets into the slide rail simultaneously, improves the bonding strength between precast concrete roof beam and the pterygoid lamina, and concrete forms limit structure with the slide rail after getting into the slide rail internal fixation simultaneously, can improve precast concrete roof beam's joint strength. The gap between one end of the wing plate far away from the precast concrete column and the precast concrete beam can be closed through the second sealing edge, and concrete is prevented from leaking from the gap.
The invention is further configured to: the slide rail is formed by pre-buried channel steel that is fixed in the precast concrete roof beam, and two curb plates of channel steel extend the side of precast concrete roof beam.
Through adopting above-mentioned technical scheme, the slide rail constitutes in being fixed in the precast concrete roof beam through the channel-section steel is pre-buried for the setting of slide rail is more simple and convenient, and the connection is all pour in the precast concrete roof beam to the bottom plate of channel-section steel and partly of curb plate simultaneously, connects reliably, and intensity is high.
The invention is further configured to: the diameter of the hole for the lock rod to penetrate through is larger than the outer diameter of the lock rod.
Through adopting above-mentioned technical scheme, when concreting, the concrete can get into in this hole, carries out the shutoff to this hole, wraps up in the downthehole part of locking lever simultaneously and holds in the palm, improves the joint strength of locking lever and pterygoid lamina.
The invention also aims to provide a construction method of the precast concrete beam-column connection joint, which comprises the following steps:
1) preparing a precast concrete column: the precast concrete column is prefabricated in a factory, a shaping template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete column for pouring and forming, and the bearing platform and the wing plate are integrally poured and formed with the precast concrete column; the column connecting piece is pre-buried and fixed on the precast concrete column; the support rod is pre-buried and fixed on the bearing platform; a hole for the lock rod to penetrate through is reserved on the wing plate;
2) preparing a precast concrete beam: the precast concrete beam is prefabricated in a factory, a shaping template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete beam for pouring and forming, and the beam connecting piece and the vertical sleeve are pre-buried and fixed on the precast concrete beam; the sliding rail is formed by embedding and fixing channel steel on a precast concrete beam;
3) hoisting the precast concrete beam: placing a precast concrete beam on a bearing platform of the installed precast concrete column, hoisting the precast concrete beam above the bearing platform through hoisting equipment, positioning the precast concrete beam through a slide rail on the side surface of the precast concrete beam and a positioning block on the inner side wall of a wing plate, slowly lowering the precast concrete beam onto a support rod of the bearing platform by aligning the slide rail with a slide block, and abutting a first sealing edge against the bottom surface of the precast concrete beam;
4) and (3) installing a lock rod: a locking rod is inserted into a hole reserved on the wing plate, so that a locking rod is inserted into each of the first slot, the second slot and the third slot, and two ends of each locking rod are screwed with a sealing plate on the outer side of the wing plate to seal the hole;
5) constructing a cast-in-place part; and pouring concrete in the area formed by enclosing the wing plate, the bearing platform, the precast concrete column, the precast concrete beam, the first sealing edge and the second sealing edge to form a cast-in-place part.
By adopting the technical scheme, when the precast concrete beam is connected with the precast concrete column, the precast concrete beam is lifted only, the precast concrete beam is placed on the supporting rod of the bearing platform under the positioning action of the positioning block and the sliding rail, the template does not need to be erected, and concrete can be directly poured to form the cast-in-place part. Compared with the existing wet connection mode, the construction method has the advantages that the construction steps and procedures can be effectively reduced, the construction speed is improved, meanwhile, the connection strength is high, and the method is particularly suitable for pouring connection of the precast concrete beam and the precast concrete column in the fabricated building.
Drawings
FIG. 1 is a schematic view illustrating the connection between a precast concrete beam and a precast concrete column according to the present embodiment;
FIG. 2 is a schematic view of the internal structure of the installation groove of the present embodiment;
FIG. 3 is a schematic view showing the structure of the beam connecting member according to the present embodiment;
FIG. 4 is a top view of the locking rod connecting post connector, beam connector of the present embodiment;
FIG. 5 is a schematic side view of the first slot, the second slot and the third slot of the present embodiment;
fig. 6 is an exploded view of the precast concrete beam and the precast concrete column according to the present embodiment.
Description of reference numerals: 1. prefabricating a concrete column; 2. prefabricating a concrete beam; 3. a bearing platform; 4. a wing plate; 5. mounting grooves; 6. a cast-in-place section; 7. a post connector; 8. a first straight rod; 9. a first arcuate bar; 10. a beam connector; 11. a second straight rod; 12. a second arcuate bar; 13. a first slot; 14. a second slot; 15. a third slot; 16. a lock lever; 17. a sealing plate; 18. an aperture; 19. a support bar; 20. a vertical sleeve; 21. a first sealing edge; 22. positioning blocks; 23. a slide rail; 24. and a second sealing edge.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example (b):
as shown in figure 1, a precast concrete beam column connected node structure, including precast concrete beam 2 and precast concrete column 1, be equipped with cushion cap 3 on the precast concrete beam 2, the width direction both sides of cushion cap 3 are equipped with pterygoid lamina 4, and pterygoid lamina 4 is connected in cushion cap 3 and precast concrete column 1. The wing plate 4, the bearing platform 3 and the precast concrete column 1 are integrally cast. An installation groove 5 for pre-connecting the precast concrete beam 2 is formed between the wing plate 4 and the bearing platform 3, and a cast-in-place part 6 is formed in an area enclosed by the precast concrete column 1, the precast concrete beam 2, the bearing platform 3 and the wing plate 4 through concrete pouring.
As shown in fig. 2, three rows of column connectors 7 are arranged in a rectangular array on one side of the precast concrete column 1 facing the installation groove 5, and the number of each row of column connectors 7 is preferably four or more, in this embodiment four. The number of column connectors 7 in each row may be appropriately adjusted according to the width of the precast concrete column 1 and the precast concrete beam 2. Each column connecting piece 7 comprises an upper first straight rod 8 and a lower first straight rod 8 which are vertically connected to the precast concrete column 1, and a first arc-shaped rod 9 used for connecting the end parts of the two first straight rods 8, and the arc opening of the first arc-shaped rod 9 faces the precast concrete column 1; the length of the first straight rod 8 of the three rows of column connecting pieces 7 is increased from top to bottom. The column connecting piece 7 further comprises a first embedded section (not shown in the figure) which is embedded and fixed in the precast concrete column 1, and the first embedded section, the first straight rod 8 and the first arc-shaped rod 9 are steel members which are integrally formed.
As shown in fig. 3, three rows of beam connectors 10 are arranged in a rectangular array on the end surface of the precast concrete beam 2 facing the precast concrete column 1, the number of the beam connectors 10 in each row is three in the embodiment, the number of the beam connectors 10 in each row can be adjusted according to the number of the column connectors 7 in each row, and the number of the beam connectors 10 in each row is one less than the number of the column connectors 7 in each row. Each beam connecting piece 10 comprises an upper second straight rod 11 and a lower second straight rod 11 which are vertically connected to the end face of the precast concrete beam 2, and a second arc-shaped rod 12 used for connecting the end parts of the two second straight rods 11, and the arc opening of the second arc-shaped rod 12 faces the precast concrete beam 2; the length of the second straight rod 11 of the three rows of beam connecting pieces 10 is decreased progressively from top to bottom. The beam connecting piece 10 further comprises a second embedded section (not shown in the figure) embedded and fixed in the precast concrete beam 2, and the second embedded section, the first straight rod 8 and the first arc-shaped rod 9 are integrally formed steel components.
As shown in fig. 4 and 5, when the precast concrete beam 2 is supported on the bearing platform 3, the three rows of beam connectors 10 are horizontally arranged with the three rows of column connectors 7 in a staggered manner. Each beam connector 10 is located between two adjacent column connectors 7. A first slot 13 is formed between the first curved bar 9 of the first row of column connectors 7 and the second curved bar 12 of the first row of beam connectors 10. A second slot 14 is formed between the first arc rod 9 of the second row of column connectors 7 and the second arc rod 12 of the second row of beam connectors 10. A third slot 15 is formed between the first arc-shaped rod 9 of the third row of column connectors 7 and the second arc-shaped rod 12 of the third row of beam connectors 10. The first slot 13, the second slot 14 and the third slot 15 are all inserted with a lock bar 16. The outer diameter of the locking rod 16 is the same as or slightly smaller than the inner diameters of the first slot 13, the second slot 14 and the third slot 15, the part of the side wall of the locking rod 16 close to the two ends is provided with external threads, and the locking rod 16 penetrates through the wing plate 4 and is screwed with a sealing plate 17.
As shown in fig. 6, a hole 18 for the lock lever 16 to pass through is left in the wing plate 4, and the inner diameter of the hole 18 is larger than the outer wall of the lock lever 16.
As shown in fig. 2 and 3, six support rods 19 are uniformly distributed on the upper surface of the bearing platform 3, and the support rods 19 are made of steel and are fixed on the bearing platform 3 in a pre-buried manner. Vertical sleeves 20 are embedded in the precast concrete beams 2, and openings of the vertical sleeves 20 are located on the lower surfaces of the precast concrete beams 2. The length of bracing piece 19 is greater than the length of vertical sleeve 20 for when precast concrete roof beam 2 supported on bracing piece 19, form the clearance that supplies the concrete circulation between precast concrete roof beam 2 bottom surface and the cushion cap 3. The support rod 19 props against the inner wall of one side of the vertical sleeve 20 far away from the bearing platform 3; the outer diameter of the support rod 19 is smaller than the inner diameter of the vertical sleeve 20; so that a gap for concrete circulation is formed between the inner wall of the vertical sleeve 20 and the support rod 19, and a first sealing edge 21 abutting against the bottom surface of the precast concrete beam 2 is arranged at one end of the bearing platform 3 far away from the precast concrete column 1. The gap between the end of the bearing platform 3 far away from the precast concrete column 1 and the precast concrete beam 2 can be closed by the first sealing edge 21, and concrete is prevented from leaking from the gap.
As shown in fig. 4 and 6, a guide structure is arranged between the wing plate 4 and the precast concrete beam 2, the guide structure includes a positioning block 22 arranged on the inner side wall of the wing plate 4 and a slide rail 23 arranged on the side surface of the precast concrete beam 2, and the slide rail 23 and the positioning block 22 form a sliding connection. A gap is reserved between one side of the sliding rail 23 facing the wing plate 4 and the wing plate 4, and a second sealing edge 24 which is abutted against the side face of the precast concrete beam 2 is arranged on one side of the wing plate 4 far away from the precast concrete column 1. The slide rail 23 is formed by a channel steel which is pre-embedded and fixed in the precast concrete beam 2, and two side plates of the channel steel extend out of the side surface of the precast concrete beam 2 to form the slide rail 23.
A construction method of a precast concrete beam-column connection node comprises the following steps:
1) preparing a precast concrete column 1: the precast concrete column 1 is prefabricated in a factory, a shaping template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete column for pouring and forming, and the bearing platform 3 and the wing plate 4 are integrally poured and formed with the precast concrete column 1; the column connecting piece 7 is pre-buried and fixed on the precast concrete column 1; the first embedded section of the column connecting piece 7 is welded with the steel bar inside the precast concrete column 1. The support rod 19 is pre-buried and fixed on the bearing platform 3; the wing plate 4 is provided with a hole 18 for the lock rod 16 to pass through and a pre-buried connecting positioning block 22. The positioning block 22 is made of steel and one end of the positioning block is poured in the wing plate 4; the positioning block 22 may also be a block-shaped structure fixed to the wing plate 4 by an expansion screw at a later stage.
2) Preparing a precast concrete beam 2: the precast concrete beam 2 is prefabricated in a factory, a shaping template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete beam for pouring and forming, and the beam connecting piece 10 and the vertical sleeve 20 are pre-buried and fixed on the precast concrete beam 2; and the second embedded section of the beam connecting piece 10 is welded with the steel bars inside the precast concrete beam 2. The slide rail 23 is formed by embedding and fixing channel steel in the precast concrete beam 2.
3) Hoisting the precast concrete beam 2: the method comprises the steps of placing the precast concrete beam 2 on a bearing platform 3 of the installed precast concrete column 1, hoisting the precast concrete beam 2 to the upper side of the bearing platform 3 through hoisting equipment, positioning the precast concrete beam 2 through a sliding rail 23 on the side face of the precast concrete beam and a positioning block 22 on the inner side wall of a wing plate 4, aligning the sliding rail 23 to a sliding block, slowly lowering the precast concrete beam 2 to a supporting rod 19 of the bearing platform 3, and abutting a first sealing edge 21 to the bottom face of the precast concrete beam 2.
4) The lock lever 16 is installed: a locking rod 16 is inserted into a hole 18 reserved on the wing plate 4, so that a locking rod 16 is inserted into each of the first slot 13, the second slot 14 and the third slot 15, and sealing plates 17 are screwed on the outer sides of the wing plates 4 at two ends of the locking rod 16 to seal the hole 18.
5) Constructing a cast-in-place part 6; and concrete is poured in an area enclosed by the wing plate 4, the bearing platform 3, the precast concrete column 1, the precast concrete beam 2, the first sealing edge 21 and the second sealing edge 24 to form a cast-in-place part 6.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The utility model provides a precast concrete beam column connected node structure, includes precast concrete beam (2) and precast concrete post (1), its characterized in that:
the precast concrete beam (2) is provided with a bearing platform (3), wing plates (4) are arranged on two sides of the bearing platform (3) in the width direction, and the wing plates (4) are connected to the bearing platform (3) and the precast concrete column (1); an installation groove (5) for pre-connecting the precast concrete beam (2) is formed between the wing plate (4) and the bearing platform (3);
the prefabricated concrete column (1) is provided with three rows of column connecting pieces (7) in a rectangular array on one side facing the mounting groove (5), each column connecting piece (7) comprises an upper first straight rod (8) and a lower first straight rod (8) which are vertically connected to the prefabricated concrete column (1) and a first arc-shaped rod (9) used for connecting the end parts of the two first straight rods (8), and the arc opening of each first arc-shaped rod (9) faces the prefabricated concrete column (1); the length of the first straight rod (8) of the three rows of column connecting pieces (7) is increased from top to bottom;
the end face, facing the precast concrete column (1), of the precast concrete beam (2) is provided with three rows of beam connecting pieces (10) in a rectangular array, each beam connecting piece (10) comprises an upper second straight rod and a lower second straight rod (11) which are vertically connected to the end face of the precast concrete beam (2) and a second arc-shaped rod (12) used for connecting the end parts of the two second straight rods (11), and the arc opening of each second arc-shaped rod (12) faces the precast concrete beam (2); the length of a second straight rod (11) of the three rows of beam connecting pieces (10) is decreased progressively from top to bottom;
when the precast concrete beam (2) is supported on the bearing platform (3), the three rows of beam connecting pieces (10) and the three rows of column connecting pieces (7) are horizontally arranged in a staggered manner; each beam connecting piece (10) is positioned between two adjacent column connecting pieces (7); a first slot (13) is formed between the first arc-shaped rod (9) of the first row of column connecting pieces (7) and the second arc-shaped rod (12) of the first row of beam connecting pieces (10); a second slot (14) is formed between the first arc-shaped rod (9) of the second row of column connecting piece (7) and the second arc-shaped rod (12) of the second row of beam connecting piece (10); a third slot (15) is formed between the first arc-shaped rod (9) of the third row of column connecting piece (7) and the second arc-shaped rod (12) of the third row of beam connecting piece (10); the first slot (13), the second slot (14) and the third slot (15) are all inserted with a lock rod (16), and the lock rod (16) penetrates through the wing plate (4) and is connected with a sealing plate (17) in a threaded manner; and a cast-in-place part (6) is formed between the precast concrete column (1) and the precast concrete beam (2) in a pouring way.
2. A precast concrete beam column connection node structure according to claim 1, wherein: the upper surface of the bearing platform (3) is provided with a supporting rod (19), a vertical sleeve (20) is embedded in the precast concrete beam (2), an opening of the vertical sleeve (20) is located on the lower surface of the precast concrete beam (2), the length of the supporting rod (19) is greater than that of the vertical sleeve (20), and the outer diameter of the supporting rod (19) is smaller than the inner diameter of the vertical sleeve (20); the supporting rod (19) is abutted against the inner wall of one side, away from the bearing platform (3), of the vertical sleeve (20); one end, far away from the precast concrete column (1), of the bearing platform (3) is provided with a first sealing edge (21) which is abutted to the bottom surface of the precast concrete beam (2).
3. A precast concrete beam column connection node structure according to claim 2, wherein: be provided with guide structure between pterygoid lamina (4) and precast concrete roof beam (2), guide structure is including setting up in locating piece (22) of pterygoid lamina (4) inside wall and setting up in slide rail (23) of precast concrete roof beam (2) side, and slide rail (23) and locating piece (22) form sliding connection.
4. A precast concrete beam column connection node structure according to claim 3, wherein: one side of the sliding rail (23) facing the wing plate (4) and the wing plate (4) are provided with a gap, and one side of the wing plate (4) far away from the precast concrete column (1) is provided with a second sealing edge (24) which is abutted against the side surface of the precast concrete beam (2).
5. A precast concrete beam column connection node structure according to claim 4, wherein: the sliding rails (23) are formed by channel steel which is fixed in the precast concrete beam (2) in an embedded mode, and two side plates of the channel steel extend out of the side face of the precast concrete beam (2).
6. A precast concrete beam column connection node structure according to claim 5, wherein: the diameter of a hole (18) for the lock rod (16) to penetrate through on the wing plate (4) is larger than the outer diameter of the lock rod (16).
7. A construction method of a precast concrete beam column connection node is characterized by comprising the following steps: the method comprises the following steps:
1) preparing a precast concrete column (1): the precast concrete column (1) is precast in a factory, a shaping template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete column for pouring and forming, and the bearing platform (3) and the wing plate (4) are integrally poured and formed with the precast concrete column (1); the column connecting piece (7) is pre-buried and fixed on the precast concrete column (1); the support rod (19) is pre-buried and fixed on the bearing platform (3); a hole (18) for the lock rod (16) to penetrate through is reserved on the wing plate (4);
2) preparing a precast concrete beam (2): the precast concrete beam (2) is precast in a factory, a sizing template is adopted during prefabrication, reinforcing steel bars are bound inside the precast concrete beam for pouring and forming, and the beam connecting piece (10) and the vertical sleeve (20) are pre-buried and fixed on the precast concrete beam (2); the sliding rail (23) is formed by embedding and fixing channel steel on the precast concrete beam (2);
3) hoisting the precast concrete beam (2): placing a precast concrete beam (2) on a bearing platform (3) of an installed precast concrete column (1), hoisting the precast concrete beam (2) to the position above the bearing platform (3) through hoisting equipment, positioning the precast concrete beam (2) through a slide rail (23) on the side surface of the precast concrete beam (2) and a positioning block (22) on the inner side wall of a wing plate (4), slowly lowering the precast concrete beam (2) to a supporting rod (19) of the bearing platform (3) by aligning the slide rail (23) with a slide block, and abutting a first sealing edge (21) against the bottom surface of the precast concrete beam (2);
4) the lock lever (16) is installed: a locking rod (16) is inserted into a hole (18) reserved on the wing plate (4), so that the first slot (13), the second slot (14) and the third slot (15) are respectively inserted with one locking rod (16), and two ends of each locking rod (16) are screwed with a sealing plate (17) on the outer side of the wing plate (4) to seal the hole (18);
5) constructing a cast-in-place part (6); concrete is poured in an area formed by enclosing the wing plate (4), the bearing platform (3), the precast concrete column (1), the precast concrete beam (2), the first sealing edge (21) and the second sealing edge (24) to form a cast-in-place part (6).
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| CN114278019A (en) * | 2021-12-30 | 2022-04-05 | 中建八局第一建设有限公司 | Assembled roof frame and preparation process and construction method thereof |
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