CN113006274A - Novel prefabricated frame construction beam column dry-type connected node - Google Patents
Novel prefabricated frame construction beam column dry-type connected node Download PDFInfo
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- CN113006274A CN113006274A CN202110483074.5A CN202110483074A CN113006274A CN 113006274 A CN113006274 A CN 113006274A CN 202110483074 A CN202110483074 A CN 202110483074A CN 113006274 A CN113006274 A CN 113006274A
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- column
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- precast concrete
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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
Abstract
The invention discloses a novel prefabricated frame structure beam column dry type connecting node, which belongs to the technical field of house construction and comprises a prefabricated concrete beam, a prefabricated concrete lower column, a prefabricated concrete upper column, a connecting end and a bracket, wherein a reserved vertical steel bar is arranged at the lower part of the connecting end, a bracket reserved hole is formed in the bracket, a longitudinal bar reserved hole is formed in the prefabricated concrete lower column, and the connecting end and the bracket are inserted into the bracket reserved hole through the reserved vertical steel bar to be connected; the prefabricated concrete upper column and the prefabricated concrete lower column are inserted into the longitudinal rib reserved holes through the prefabricated longitudinal ribs and are connected.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a novel prefabricated frame structure beam column dry type connecting node.
Background
In order to meet the requirement of the anti-seismic performance of a prefabricated assembly type concrete frame structure system, the problems of connection strength and reliability of the prefabricated columns and the prefabricated beams are solved through related construction measures. The known connection structure generally recognized at present comprises a connection structure that a groove is arranged at a beam end, prestressed steel strands at the bottom of a beam are subjected to U-shaped bending treatment in the groove, steel strand channels are reserved in the groove and the joint area to apply prestress to the steel strands, or a connection structure that step-shaped brackets are placed at the beam end, common steel bars with hooks extending out of a certain length at the end part of the beam bottom extend into the joint area of a beam column and concrete is cast in situ at the joint, or an assembly point that connecting steel members are arranged through the side edges of the column and the beam end and the beam column steel members are connected through bolts.
In the known connection structure, the groove is formed in the beam end, the steel strand in the groove is hooked, and the U-shaped channel is additionally provided with the connection structure for applying prestress by passing the steel strand through the inner channel, so that the prestressed tendon is difficult to pass through the U-shaped channel during field construction, the force transfer performance between the U-shaped channel and the steel strand is poor, and the ductility of the node is low; for the structure that a step-shaped bracket is placed at the beam end or the common reinforcing steel bar with a hook, which extends out of the end part of the beam bottom for a certain length, extends into the node area of the beam column, the collision of the reinforcing steel bar at the beam bottom often occurs when the reinforcing steel bar at the beam bottom extends into the node area in different directions, so that the construction is inconvenient; set up the connecting steel member through post side and beam-ends, the assembly point that carries out the connection with the bolt between beam column steel member is to the required precision of counterpoint very high, uneconomic, moreover because the junction is steel, easy corrosion, the later maintenance cost is higher.
Although the prefabricated convenience of the assembly type structural member is fully utilized, the column penetrates through a gap in the beam and is inserted into a supporting block through a limiting plate and a fixed steel bar to be preliminarily fixed, and then the beam and the column are connected by placing a locking mechanism in a first clamping groove and a second clamping groove, the column width is generally larger than the beam width in combination with the actual engineering, so that the column cannot penetrate through the gap in the beam, the node is relatively weak, the connection cannot meet the requirements of a strong node and a weak member, and cannot be realized in specific construction.
Disclosure of Invention
In order to solve the technical problems, the invention provides a novel prefabricated frame structure beam-column dry type connecting node structure which is connected with a column body through a horizontal through hole arranged at the top of a connecting end, after primary fixing is completed, the horizontal through hole is aligned automatically, a high-strength bolt is directly penetrated into the horizontal through hole and screwed in without screwing, then high-strength concrete slurry is injected into a gap to complete fixing, and a shear key between a beam end and a column surface assists shearing of a bracket, so that the purposes of convenience in construction and installation, good force transmission effect and high node strength are achieved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a novel prefabricated frame structure beam column dry type connecting node comprises a prefabricated concrete beam, a prefabricated concrete lower column, a prefabricated concrete upper column, connecting ends, high-strength bolts and brackets, wherein the end part of the prefabricated concrete beam is provided with the connecting ends, shear keys are arranged on the connecting ends at one side close to the prefabricated concrete upper column, reserved vertical steel bars are arranged at the lower parts of the connecting ends, reserved through holes are formed in the connecting ends, and a tongue-and-groove seam I is arranged at the lower parts of the connecting ends; brackets are respectively arranged on two sides of the reserved concrete lower column, bracket reserved holes are formed in the brackets, tongue-and-groove joints II are formed in the brackets, a limiting block is arranged on the prefabricated concrete lower column, longitudinal bar reserved holes are formed in the prefabricated concrete lower column, and connecting ends and the brackets are inserted into the bracket reserved holes through reserved vertical steel bars to be connected; the lower end of the precast concrete upper column is provided with a reserved longitudinal bar, the reserved longitudinal bar is inserted into a longitudinal bar reserved hole of the precast concrete lower column, and the precast concrete upper column is provided with a reserved steel sleeve and an anti-shear key; the precast concrete upper column and the precast concrete lower column are inserted into the longitudinal bar reserved hole through the precast longitudinal bar and are connected, the high-strength bolt is used for fixing after the through hole reserved in the upper portion of the connecting end is aligned with the steel sleeve reserved in the column body, a gap is formed between the shear keys, and high-strength concrete slurry is injected into the gap.
Furthermore, brackets can be prefabricated on the periphery of the prefabricated concrete lower column according to the specific position of the column.
Furthermore, the limiting block ensures that a certain gap is reserved between the cylindrical surfaces.
Furthermore, the tongue-and-groove joint resists the transverse shearing force generated to the bracket when the precast concrete beam is bent.
Furthermore, a plurality of preformed holes have been seted up at the vertical direction to the bracket, and two sets of preformed holes are the rectangle array and arrange.
Furthermore, the reserved through holes are arranged in a rectangular array.
Furthermore, the precast concrete column is provided with a column body in which a reserved steel sleeve is aligned with the reserved through hole at the upper part of the end at a position equal to the reserved through hole at the upper part of the connecting end of the precast beam.
Furthermore, the high-strength bolt is inserted into a reserved through hole in the upper portion of the connecting end and connected with a reserved steel sleeve in the precast concrete upper column.
Further, the connecting end is tightened through a high-strength bolt.
The invention has the advantages and beneficial effects that:
1. this novel prefabricated assembled frame construction beam column dry-type connected node through setting up the bracket, can place precast beam on the bracket when the construction, prevents that the roof beam from sliding down, has realized the purpose of the equipment of being convenient for of temporary support.
2. This novel prefabricated assembled frame construction beam column dry-type connected node through reserve perpendicular reinforcing bar at the connection end, at the in-process that the roof beam moved down, reserves perpendicular reinforcing bar and aims at and pass in the perpendicular preformed hole of bracket to pour into high-strength concrete into, realized that the one-level is fixed.
3. This novel prefabricated assembled frame construction beam column dry-type connected node is connected with the shaft through setting up the horizontal through-hole at link end top, and after the one-level is fixed to be accomplished, the horizontal through-hole just is automatic right, directly penetrates high strength bolt and transfers to twist and not screw up, then pours into high strength concrete thick liquid into in the gap again and can accomplish fixedly, and the bracket is assisted to the shear key between beam-ends and the cylinder and shears, has realized the construction installation of being convenient for, has passed effectual, the high mesh of node strength.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a plan view schematically illustrating a precast concrete beam according to the present invention;
FIG. 3 is a pictorial view of a high strength bolt of the present invention;
fig. 4 is a schematic bottom view of a precast concrete beam of the present invention;
FIG. 5 is a schematic top view of a precast concrete lower column of the present invention;
FIG. 6 is a schematic view of the upper side of the precast concrete lower column of the present invention;
FIG. 7 is a schematic view showing a structure of a precast concrete lower column according to the present invention;
FIG. 8 is a schematic view showing the structure of a precast concrete upper column according to the present invention;
fig. 9 is a schematic structural view of a precast concrete beam of the present invention;
FIG. 10 is a schematic view of a node connection according to the present invention;
FIG. 11 is a schematic view of reinforcement of the precast concrete beam of the present invention;
FIG. 12 is a schematic sectional view taken along line 1-1 in FIG. 11;
FIG. 13 is a schematic sectional view taken along line 2-2 of FIG. 11;
FIG. 14 is a schematic view of a precast concrete lower column reinforcement of the present invention;
fig. 15 is a schematic sectional view taken along line 3-3 in fig. 14.
In the figure: 1 is a precast concrete beam; 1-1 is a connecting end; 1-2 is a shear key; 1-3 is a first rabbet; 1-4 are reserved through holes; 1-5 are reserved vertical steel bars; 1-6 are high-strength bolts; 1-7 are connecting end stirrups; 1-8 are connecting end vertical steel bars; 1-9 are beam-encrypted stirrups; 1-10 are stress steel bars on the upper part of the beam; 1-11 are the stressed steel bars at the lower part of the beam; 1-12 are beam stirrups; 2, precast concrete lower columns; 2-1 is a bracket; 2-2 is a second tongue-and-groove seam; 2-3 is a limiting block; 2-4 are longitudinal bar reserved holes; 2-5 are reserved holes of the bracket; 2-6 are bracket shear-resistant steel bars; 2-7 are bracket stirrups; 2-8 are column stirrups; 2-9 are column longitudinal ribs; 3, precast concrete upper columns; 3-1 is a shear bond; 3-2 is a reserved steel sleeve; 3-3-reserving longitudinal ribs; and 4 is a gap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
A novel prefabricated frame structure beam column dry type connecting node is shown in figures 1-9 and comprises a prefabricated concrete beam 1, connecting end heads 1-1, shear keys 1-2, tongue-and-groove joints 1-3, reserved through holes 1-4, reserved vertical steel bars 1-5, high-strength bolts 1-6, a prefabricated concrete lower column 2, brackets 2-1, tongue-and-groove joints two 2-2, limiting blocks 2-3, longitudinal bar reserved holes 2-4, bracket reserved holes 2-5, a prefabricated concrete upper column 3, shear keys 3-1, reserved steel sleeves 3-2, reserved longitudinal bars 3-3 and gaps 4, the prefabricated concrete beam 1 and the connecting end heads 1-1 are prefabricated integrally, the shear keys 1-2 are prefabricated on the contact surfaces of the connecting end heads 1-1 and the columns, the brackets 2-1 are prefabricated integrally according to needs according to the positions of the prefabricated concrete lower column 2, the lower end of a precast concrete upper column 3 is provided with reserved longitudinal bars 3-3, the side surface is provided with a shear key 3-1, the precast concrete upper column 3 is inserted into a longitudinal bar reserved hole 2-4 of a precast concrete lower column 2 filled with high-strength concrete grout in an aligning way through the reserved longitudinal bars 3-3, four limit blocks 2-3 are used for limiting the gap between the column surfaces so as to facilitate the injection of the high-strength concrete grout into the gap 4 for strengthening connection, a concrete beam 1-1 is inserted into a bracket reserved hole 2-5 filled with the high-strength concrete grout in an aligning way through reserved vertical steel bars 1-5 at the lower end of a connecting end 1-1, a tongue-and-groove joint two 2-2 at the top of the connecting end 1-1 and a tongue-and-groove joint one 1-3 at the bottom end of the connecting end are used for resisting the shearing force generated by the beam in the connecting end 1-1 when the beam is bent, the reserved through holes 1-4 at the top of the connecting end 1-1 and the reserved steel sleeves 3-2 in the precast concrete upper columns 3 are automatically aligned to penetrate high-strength bolts 1-6 and then screwed in without screwing, then high-strength concrete grout is injected into gaps 4 between the shear keys 1-2 of the connecting end 1-1 and the shear keys 3-1 on the side faces of the precast concrete upper columns 3 to strengthen the connecting resisting shear force, the high-strength bolts 1-6 are screwed after the high-strength concrete grout reaches a certain strength, and the connection of beam column nodes is completed, so that the purposes of convenience in installation, high connecting strength and good anti-seismic performance are achieved.
As shown in fig. 10-12, the precast concrete beam 1 is internally provided with a reinforced stirrup 1-9, a beam upper stressed reinforcement 1-10, a beam lower stressed reinforcement 1-11 and a stirrup 1-12, and the beam upper stressed reinforcement 1-10, the beam lower stressed reinforcement 1-11 and the stirrup 1-12 are subjected to reinforced anchoring through the reinforced stirrup 1-9; the connecting end 1-1 is internally provided with a connecting end stirrup 1-7 and a connecting end vertical steel bar 1-8, and the connecting end stirrup 1-7 is connected with the connecting end vertical steel bar 1-8 in an anchoring manner.
As shown in fig. 13 and 14, the bracket 1-1 is internally provided with bracket shear reinforcements 2-6 and bracket stirrups 2-7, and the bracket shear reinforcements 2-6 and the bracket stirrups 2-7 are connected in an anchoring manner; the prefabricated concrete lower column 2 is internally provided with column stirrups 2-8 and column longitudinal reinforcements 2-9, and the column stirrups 2-8 and the column longitudinal reinforcements 2-9 are connected in an anchoring manner.
As a preferred technical scheme of the invention: after the precast concrete beam 1 is preliminarily connected with the precast concrete lower column 2 and the precast concrete upper column 3, high-strength concrete slurry is injected into a gap 4 between the shear key 1-2 of the connecting end 1-1 and the shear key 3-1 on the side surface of the precast concrete upper column 3, so that the connection integrity is further enhanced, and the aims of enhancing the connection strength and rigidity of the node and good earthquake resistance are fulfilled.
To sum up, when the novel prefabricated frame structure beam-column dry type connecting joint is used, the connection between columns is realized through the reserved longitudinal ribs 3-3 arranged at the lower end of the prefabricated concrete upper column 3 and the longitudinal rib reserved holes 2-4 arranged at the top end of the prefabricated concrete lower column 2, and the purpose of convenient connection is achieved; the spacing between the cylindrical surfaces is limited by the limiting blocks 2-3 arranged on the top surface of the precast concrete lower column 2, so that high-strength concrete grout can be injected between the cylindrical surfaces to achieve the purpose of strengthening connection; by arranging the bracket 2-1, the beam can be placed on the bracket 2-1 during assembly, the reserved vertical steel bars 1-5 are inserted into the bracket reserved holes 2-5 to prevent the side shift, and an additional supporting and positioning structure is not needed, so that the purpose of convenient assembly is realized; the tongue-and-groove joint 2-2 arranged on the top surface of the bracket 2-1 and the tongue-and-groove joint 1-3 arranged on the bottom surface of the connecting end 1-1 play a role of resisting shear; the shear keys 3-1 arranged on the side surfaces of the columns and the shear keys 1-2 arranged at the beam ends are used for injecting high-strength concrete slurry into the gaps 4 to play a role in strengthening connection and resisting shear force.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention, the technical solutions according to the present invention and the equivalent alternatives or modifications of the inventive concept within the technical scope of the present invention.
Claims (9)
1. The utility model provides a novel prefabricated assembled frame construction beam column dry-type connected node, includes precast concrete roof beam (1), precast concrete lower prop (2), precast concrete upper prop (3), connection end (1-1), high strength bolt (1-6), bracket (2-1), its characterized in that: the end part of the precast concrete beam (1) is provided with a connecting end (1-1), one side, close to the precast concrete upper column (3), of the connecting end (1-1) is provided with a shear key (1-2), the lower part of the connecting end (1-1) is provided with a reserved vertical steel bar (1-5), a reserved through hole (1-4) is formed in the connecting end (1-1), and the lower part of the connecting end (1-1) is provided with a tongue-and-groove joint I (1-3); brackets (2-1) are respectively arranged on two sides of the reserved concrete lower column (2), bracket preformed holes (2-5) are formed in the brackets (2-1), a tongue-and-groove joint II (2-2) is formed in the brackets (2-1), limiting blocks (2-3) are arranged on the prefabricated concrete lower column (2), longitudinal reinforcement preformed holes (2-4) are formed in the prefabricated concrete lower column (2), and the connecting end (1-1) and the brackets (2-1) are inserted into the bracket preformed holes (2-5) through reserved vertical reinforcements (1-5) to be connected; the lower end of the precast concrete upper column (3) is provided with a reserved longitudinal bar (3-3), the reserved longitudinal bar (3-3) is inserted into a longitudinal bar reserved hole (2-4) of the precast concrete lower column (2), and the precast concrete upper column (3) is provided with a reserved steel sleeve (3-2) and a shear key (3-1); the prefabricated concrete upper column (3) and the prefabricated concrete lower column (2) are inserted into the longitudinal bar reserved holes (2-4) through the prefabricated longitudinal bars (3-3) to be connected, after the upper reserved through holes (1-4) of the connecting ends (1-1) are aligned with the reserved steel sleeves (3-2) in the column body, the connecting ends are fixed through high-strength bolts (1-6), gaps (4) are formed among the shear keys (3-1), and high-strength concrete slurry is injected into the gaps (4).
2. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: and the bracket (2-1) can be prefabricated on the periphery of the prefabricated concrete lower column (2) according to the specific position of the column.
3. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the limiting blocks (2-3) ensure that a certain gap is reserved between the cylindrical surfaces.
4. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the tongue-and-groove joints (1-3) resist the transverse shearing force generated to the brackets (2-1) when the precast concrete beam (1) is bent.
5. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: a plurality of preformed holes (2-5) are formed in the bracket (2-1) in the vertical direction, and the two groups of preformed holes (2-5) are arranged in a rectangular array.
6. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the reserved through holes (1-4) are arranged in a rectangular array.
7. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the prefabricated concrete column (2) is provided with a column body reserved steel sleeve (3-2) which is aligned with the reserved through hole (1-4) at the upper part of the end head (1-1) of the prefabricated beam (1) at the same height as the reserved through hole (1-4) at the upper part of the end head.
8. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the high-strength bolt (1-6) is inserted into a reserved through hole (1-4) in the upper part of the connecting end (1-1) and connected with a reserved steel sleeve (3-2) in the precast concrete upper column (3).
9. The novel prefabricated assembled frame structure beam-column dry-type connection node of claim 1, wherein: the connecting end is tightened by a high-strength bolt (1-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483074.5A CN113006274A (en) | 2021-04-30 | 2021-04-30 | Novel prefabricated frame construction beam column dry-type connected node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110483074.5A CN113006274A (en) | 2021-04-30 | 2021-04-30 | Novel prefabricated frame construction beam column dry-type connected node |
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| CN113006274A true CN113006274A (en) | 2021-06-22 |
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| CN202110483074.5A Pending CN113006274A (en) | 2021-04-30 | 2021-04-30 | Novel prefabricated frame construction beam column dry-type connected node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605771A (en) * | 2021-07-27 | 2021-11-05 | 中铁十六局集团城市建设发展有限公司 | Prestress assembly type frame structure system |
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2021
- 2021-04-30 CN CN202110483074.5A patent/CN113006274A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605771A (en) * | 2021-07-27 | 2021-11-05 | 中铁十六局集团城市建设发展有限公司 | Prestress assembly type frame structure system |
| CN113605771B (en) * | 2021-07-27 | 2023-08-29 | 中铁十六局集团城市建设发展有限公司 | Prestress assembly type frame structure system |
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