A connection device, a prefabricated component and a fabricated building joint

Abstract

The utility model provides a kind of connecting device, prefabricated component and fabricated building node, connecting device includes connecting steel sheet and anchoring reinforcement cage, connecting steel sheet is equipped with the connecting hole of penetration, anchoring reinforcement cage includes the at least two annular reinforcement of one side fixed in connecting steel sheet and interval arrangement and the anchoring frame vertical reinforcement fixed in each annular reinforcement, annular reinforcement, anchoring frame vertical reinforcement and connecting steel sheet form mounting space, connecting hole is opposite mounting space.Connecting device does not need to set up steel connecting box, saves steel consumption, welding operation quantity, reduces the manufacturing cost of connecting device, reduces the hoisting pre-embedded operation difficulty of connecting device and prefabricated component weight, pre-embedded installation is convenient and efficient.And the three-dimensional reinforcement cage framework formed by annular reinforcement and anchoring frame vertical reinforcement, good integrity, strong anchoring effect, anchoring effect is guaranteed, without with prefabricated component reinforcement fixed also can guarantee anchoring effect, while not by concrete vibration Disturbance influence.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building technology, and in particular relates to a connecting device, prefabricated components and prefabricated building nodes. Background Technology

[0002] For multi-story fully prefabricated concrete wall panel buildings, bolted connections can be used to ensure structural integrity. Compared with grouting sleeve connections, bolted connections offer the advantages of simple and efficient dry connection installation.

[0003] Chinese utility model patent CN 213143405 U discloses a bolt connection box for precast wall panels, which is made of five steel plates welded together or a section of steel pipe welded to a back plate. U-shaped anchor bars are welded to the sides of the connection box, and these anchor bars are fixed to the internal reinforcing bars of the precast component. However, the manufacturing cost of this utility model mainly lies in the amount of steel used in the connection box and the amount of welding work. It is still necessary to further simplify the structure to reduce manufacturing costs and improve production efficiency while ensuring strength. In addition, due to the different single-row or double-row reinforcing bar structures and spacing within the precast component, the U-shaped anchor bars are not easily fixed to the internal reinforcing bars during actual installation. Therefore, there is still room for further strengthening of the anchoring structure of the connection box. The addition of the connection box also increases the weight of the precast wall panel. Utility Model Content

[0004] The technical objective of this utility model is to provide a connection device, prefabricated component, and prefabricated building node, aiming to solve at least one of the problems of high manufacturing cost of steel connection box bolt connection, large amount of welding work, long processing time, low anchor bar fixing effect, and increased weight of prefabricated component.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows: a connecting device is provided, including a connecting steel plate and an anchoring steel cage. The connecting steel plate has a through connecting hole. The anchoring steel cage includes at least two annular steel bars with their bottom edges fixed to one side of the connecting steel plate and spaced apart, and anchoring support steel bars fixed to each of the annular steel bars. The annular steel bars, the anchoring support steel bars, and the connecting steel plate enclose an installation space, and the connecting hole faces the installation space.

[0006] Furthermore, the connecting steel plate is a rectangular steel plate, and at least one annular reinforcing bar is provided on each of the opposite sides of the installation space, with the bottom edge of the annular reinforcing bar parallel to the short side or long side of the connecting steel plate.

[0007] Furthermore, the anchoring reinforcement bars are straight bars that pass through each of the annular reinforcement bars and are spot-welded or tied to the annular reinforcement bars; or, the anchoring reinforcement bars are hook bars that cross each of the annular reinforcement bars and are spot-welded or tied to the annular reinforcement bars.

[0008] Furthermore, the annular steel bar is formed by bending a single steel bar, and the weld point is located at the middle of the bottom edge.

[0009] Furthermore, the two sides of the bottom edge of the annular reinforcing bar are fixed to the top side of the connecting steel plate by fillet weld.

[0010] Furthermore, the annular reinforcing bars are made of smooth or ribbed steel bars; the anchoring reinforcing bars are made of smooth or ribbed steel bars.

[0011] Furthermore, a prefabricated component is provided, including the connecting device as described in any of the above and a prefabricated filler material covering the anchoring steel cage, the prefabricated component having an installation hole, the space within the installation hole being the installation space.

[0012] Furthermore, the mounting hole is an inverted trapezoid, with its top surface and two sides being beveled, and its bottom surface and back surface being flat; or, the mounting hole is square or rectangular.

[0013] Furthermore, a prefabricated building node is provided, including the prefabricated component as described above and a preset connector assembled with the prefabricated component. The preset connector has a connector with one end exposed. The connector passes through the connection hole and extends into the mounting hole, and is fixed to the connecting steel plate in the mounting hole by fasteners. After the prefabricated component and the preset connector are connected, the prefabricated component filler is backfilled.

[0014] Furthermore, when the joint between the prefabricated component and the preset connector is vertical, the prefabricated building node also includes PE rods filling both sides of the joint, waterproof adhesive coated on the outer wall side of the joint, and crack-resistant mortar coated on the inner wall side of the joint.

[0015] Compared with the prior art, the connecting device, prefabricated components, and prefabricated building nodes of this utility model have the following advantages:

[0016] The connecting holes of the connecting steel plate can be prefabricated and connected to other building structures. The bottom edge of the ring-shaped reinforcing bar is fixed to one side of the connecting steel plate. The spaced-apart ring-shaped reinforcing bars and anchoring reinforcement bars are fixed to form an anchoring reinforcement cage. This connection device eliminates the need for steel connection boxes, saving steel consumption, welding work, and reducing manufacturing costs. It also reduces the weight of the connection device and prefabricated components, simplifies hoisting and pre-embedding operations, and makes pre-embedding installation convenient and efficient. Furthermore, the three-dimensional reinforcement cage skeleton formed by the ring-shaped reinforcing bars and anchoring reinforcement bars has good integrity, strong anchoring effect, and guaranteed anchoring effect. It does not need to be fixed to the reinforcement of the prefabricated components to ensure the anchoring effect and is not affected by the disturbance of concrete vibration. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a prefabricated building node when the joint is horizontal in an embodiment of this utility model;

[0018] Figure 2 This is a structural schematic diagram of a prefabricated building node when the joint is in the vertical direction in this utility model embodiment;

[0019] Figure 3 This is a schematic diagram of the structural layout of the connection device in the front view when the anchoring reinforcement bars are straight bars in this embodiment of the utility model.

[0020] Figure 4 This is a schematic diagram of the structural layout of the connection device in the side view direction when the anchoring reinforcement bars are straight bars in this embodiment of the utility model.

[0021] Figure 5 This is a schematic diagram of the structural layout of the connection device in the top view when the anchoring reinforcement bars are straight bars in this embodiment of the utility model.

[0022] Figure 6 This is a schematic diagram of the structural layout of the connecting device in the front view when the anchoring reinforcement is a hook bar in an embodiment of this utility model.

[0023] Figure 7 This is a schematic diagram of the structural layout of the connecting device in the side view direction when the anchoring reinforcement is a hook bar in this embodiment of the utility model.

[0024] Figure 8 This is a schematic diagram of the structural layout of the connecting device in the top view when the anchoring reinforcement is a hook bar in an embodiment of this utility model.

[0025] In the accompanying drawings, the reference numerals indicate: 100, prefabricated component; 200, pre-installed connector; 101, connecting device; 102, mounting hole; 1, connecting steel plate; 2, anchoring steel cage; 11, connecting hole; 21, ring steel bar; 22, anchoring upright steel bar; 211, butt weld; 212, fillet weld; 201, connector; 202, fastener; 203, PE rod; 204, waterproof adhesive; 205, crack-resistant mortar; 301, grouting. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Combination Figure 1 and Figure 2 A prefabricated building node is provided, including a prefabricated component 100 and a preset connector 200 assembled with the prefabricated component 100, wherein a connector 201 with one end exposed is embedded in the preset connector 200.

[0030] The precast component 100 includes a connecting device 101 and a precast filler material integrated with the connecting device 101. Figure 3-5 or Figure 6-8 The connecting device 101 includes a connecting steel plate 1 and an anchoring steel cage 2. The connecting steel plate 1 has a through connecting hole 11. The anchoring steel cage 2 includes at least two annular steel bars 21 with their bottom edges fixed to one side of the connecting steel plate 1 and spaced apart, and anchoring upright steel bars 22 fixed to each annular steel bar 21. The annular steel bars 21, the anchoring upright steel bars 22 and the connecting steel plate 1 enclose an installation space. The connecting hole 11 faces the installation space. The anchoring steel cage 2 and the precast filler material are combined to form a reinforced concrete structure, thereby forming a precast component 100. The precast component 100 has an installation hole 102. The space inside the installation hole 102 is the installation space enclosed by the anchoring steel cage 2 and the connecting steel plate 1.

[0031] The connector 201 on the pre-connector 200 passes through the connecting hole 11 on the connecting steel plate 1 and extends into the mounting hole 102, and is fixed to the connecting steel plate 1 by fasteners 202 in the mounting hole 102; wherein, after the precast component 100 and the pre-connector 200 are connected, the precast component filler is backfilled. The precast component filler can be cement mortar or concrete, and the backfilled part has the same or similar strength as the precast component 100.

[0032] In this design, the connecting holes 11 of the connecting steel plate 1 of the connecting device 101 can be prefabricated and connected to other building structures. The bottom edge of the annular reinforcing bar 21 is fixed to one side of the connecting steel plate 1. The annular reinforcing bars 21 and the anchoring upright reinforcing bars 22, which are spaced apart, are fixed to form an anchoring reinforcing bar cage 2. The connecting device 101 thus formed does not require a steel connecting box, saving steel consumption and welding work, reducing the manufacturing cost of the connecting device 101, reducing the weight of the connecting device 101 and the precast component 100, and reducing the difficulty of hoisting and pre-embedding operations. The pre-embedding installation is convenient and efficient. Moreover, the three-dimensional reinforcing bar cage skeleton formed by the annular reinforcing bars 21 and the anchoring upright reinforcing bars 22 has good integrity, strong anchoring effect, and guaranteed anchoring effect. It can guarantee the anchoring effect without being fixed to the reinforcing bars of the precast component 100, and is not affected by the disturbance of concrete vibration.

[0033] The connecting device 101, as part of the precast component 100, is integrated with the precast filler material of the precast component 100 to form a single unit. Furthermore, the mounting hole 102 of the precast component 100 includes the installation space for the connecting device 101. Thus, as long as the pre-installed connector 200 is equipped with a connector 201, the connector 201 can pass through the connecting hole 11 and be connected to the connector 201 within the mounting hole 102 using fasteners 202, thereby achieving assembly between the precast component 100 and the pre-installed connector 200. Construction is simple and assembly can be rapid. It should be understood that one, two, or three connecting devices 101 can be installed within a precast component 100. In this way, one, two, or three prefabricated building nodes can be formed between the pre-installed connector 200 and the precast component 100, ensuring a stable connection. The specific number can be adjusted adaptively according to actual conditions.

[0034] Furthermore, the mounting hole 102 is an inverted trapezoid, with its top surface and two sides being beveled, and its bottom surface and back surface being flat. This facilitates demolding and also increases the operating space of the bolt wrench to a certain extent, making it easier to tighten the fastener 202 and the connector 201. In some embodiments, the mounting hole 102 can be square or rectangular.

[0035] Furthermore, the precast component 100 and the pre-set connector 200 can be precast wall panels, beams, or columns, etc. The connector 201 can be a pre-embedded vertical steel bar (with a screw at one end extending out of the mounting hole 102), a threaded rod (with a screw at one end extending out of the mounting hole 102), or a bolt sleeve and a matching threaded rod (with screws at both ends of the threaded rod or a full-length screw). As long as the connector 201 can be connected to the fastener 202 after extending into the mounting hole 102, thereby fastening the connecting steel plate 1 to the pre-set connector 200, it is acceptable.

[0036] Among them, such as Figure 1 When the precast component 100 and the pre-set connector 200 are connected by a horizontal joint between a vertical wall panel, column or beam wall, a precast floor slab is generally sandwiched in between. The connector 201 can connect the two precast components 100 by passing through the reserved holes in the floor slab or the joint between the slabs. The top and bottom of the floor slab are connected to the wall panel or column component by the grout 301.

[0037] like Figure 2 When vertical joints are made between prefabricated components 100 and pre-set connectors 200 in the horizontal direction, such as wall panels, columns, or beams, spacers are installed between the joints for positioning. The prefabricated building joint also includes PE rods 203 filled on both sides of the joint, waterproof adhesive 204 coated on the outer wall side of the joint, and crack-resistant mortar 205 coated on the inner wall side of the joint. The PE rods 203 are foamed closed-cell polyethylene plastic rods, and the waterproof adhesive 204 can be weather-resistant polyurethane sealant.

[0038] Furthermore, the connecting steel plate 1 is a rectangular steel plate with a connecting hole 11 in the middle. The connecting hole 11 can be a round hole, an elliptical hole, a square hole, a rectangular hole, etc., as long as the connector 201 can pass through. At least one annular reinforcing bar 21 is provided on each of the opposite sides of the installation space. The bottom edge of the annular reinforcing bar 21 is parallel to the short side or long side of the connecting steel plate 1. Specifically, the connecting end face of the precast component 100 is a plane. The outer side of the connecting steel plate 1 facing away from the installation space is flush with the connecting end face of the precast component 100. Furthermore, the long edge or wide edge of the connecting steel plate 1 can be flush with the outer side of the precast component 100. In some implementations, the outer periphery of the connecting steel plate 1 can be partially or completely located inside the precast component 100. The bottom edge of the annular reinforcing bar 21 can be parallel to the short side of the connecting steel plate 1 and have a predetermined distance from the short side edge, or the bottom edge of the annular reinforcing bar 21 can be parallel to the long side of the connecting steel plate 1 and have a predetermined distance from the long side edge. Each ring-shaped reinforcing bar 21 is arranged and aligned along the direction of the precast component 100. The plane of the ring-shaped reinforcing bar 21 is perpendicular to the surface of the connecting steel plate 1. Among them, the two ring-shaped reinforcing bars 21 closest to the installation space are symmetrical with respect to the center line of the connecting steel plate 1, so that the force is not eccentric and the anchoring performance is more guaranteed.

[0039] Furthermore, the anchoring reinforcement 22 is a straight bar, which passes through each ring reinforcement 21 and is spot-welded or tied to the ring reinforcement 21 for fixation; or, the anchoring reinforcement 22 is a hook bar, which spans each ring reinforcement 21 and is spot-welded or tied to the ring reinforcement 21 for fixation. Specifically, in this embodiment, as... Figure 3-5 For the annular reinforcing bars 21 whose bottom edge is parallel to the short side of the connecting steel plate 1, straight bars are used to pass through the annular reinforcing bars 21 to form an anchoring reinforcing cage 2, such as... Figure 6-8 For the annular reinforcing bars 21 parallel to the long side of the connecting steel plate 1, hook bars are used to cross over the top side of the annular reinforcing bars 21 to form an anchoring reinforcing cage 2. It should be understood that the setting method of the anchoring and erecting reinforcing bars 22 is not limited to the two mentioned above, as long as each annular reinforcing bar 21 can be fixed stably so that it does not shake or shift during concrete vibration.

[0040] Furthermore, the annular reinforcing bar 21 is formed by bending a single reinforcing bar, with the butt weld 211 located at the middle of the bottom edge. The two sides of the bottom edge of the annular reinforcing bar 21 are fixed to the top edge of the connecting steel plate 1 by fillet weld 212. Welding the annular reinforcing bar 21 onto the connecting steel plate 1 ensures the flatness of the steel plate's positioning, thereby guaranteeing the accuracy of the bolt connection. The fillet weld 212 used for welding the annular reinforcing bar 21 ensures the anchoring connection.

[0041] Furthermore, the ring-shaped reinforcing bar 21 can be made of smooth or ribbed steel bars; the anchoring reinforcing bar 22 can be made of smooth or ribbed steel bars.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting device, characterized in that, The device includes a connecting steel plate and an anchoring steel cage. The connecting steel plate has a through connecting hole. The anchoring steel cage includes at least two annular steel bars with their bottom edges fixed to one side of the connecting steel plate and spaced apart, as well as anchoring reinforcing bars fixed to each of the annular steel bars. The annular steel bars, the anchoring reinforcing bars, and the connecting steel plate enclose an installation space, and the connecting hole faces the installation space.

2. The connecting device according to claim 1, characterized in that, The connecting steel plate is a rectangular steel plate, and at least one annular steel bar is provided on each of the opposite sides of the installation space. The bottom edge of the annular steel bar is parallel to the short side or long side of the connecting steel plate.

3. The connecting device according to claim 2, characterized in that, The anchoring reinforcement bars are straight bars that pass through each of the ring reinforcement bars and are spot-welded or tied to the ring reinforcement bars for fixation. Alternatively, the anchoring reinforcement bars may be hook bars, which cross over each of the ring reinforcement bars and are spot welded or tied to the ring reinforcement bars for fixation.

4. The connecting device according to claim 1, characterized in that, The ring-shaped steel bar is formed by bending a single steel bar, with the weld point located at the middle of the bottom edge.

5. The connecting device according to claim 4, characterized in that, The bottom sides of the ring-shaped reinforcing bar are fixed to the top side of the connecting steel plate by fillet weld.

6. The connecting device according to claim 1, characterized in that, The ring-shaped reinforcing bars are made of smooth or ribbed steel bars; the anchoring reinforcing bars are made of smooth or ribbed steel bars.

7. A prefabricated component, characterized in that, Includes the connecting device as described in any one of claims 1-6 and the precast filler material covering the anchoring steel cage, wherein the precast component has an installation hole and the space within the installation hole is the installation space.

8. The prefabricated component according to claim 7, characterized in that, The mounting hole is an inverted trapezoid, with its top surface and two sides being beveled, and its bottom surface and back surface being flat. Alternatively, the mounting hole may be square or rectangular.

9. A prefabricated building node, characterized in that, The device includes a prefabricated component as described in claim 7 or 8 and a pre-set connector assembled with the prefabricated component. The pre-set connector has a connector with one end exposed. The connector passes through the connecting hole and extends into the mounting hole, and is fixed to the connecting steel plate in the mounting hole by fasteners. After the prefabricated component and the pre-set connector are connected, the prefabricated component filler is backfilled.

10. The prefabricated building node according to claim 9, characterized in that, When the joint between the prefabricated component and the preset connector is vertical, the prefabricated building node also includes PE rods filled on both sides of the joint, waterproof adhesive coated on the outer wall side of the joint, and crack-resistant mortar coated on the inner wall side of the joint.

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