Prefabricated building wallboard connecting joint structure

Abstract

This invention discloses a prefabricated building wall panel connection node structure, including a floor slab and prefabricated wall panels. A plurality of pre-embedded reinforcing bars are uniformly fixed to the upper outer surface of the floor slab. Horizontal reinforcing bars are arranged horizontally inside the prefabricated wall panels, and vertical reinforcing bars are arranged vertically inside the prefabricated wall panels. A hoisting and fixing mechanism is provided between the floor slab and the prefabricated wall panels, allowing for fixation after hoisting. This invention offers good performance. The hoisting and fixing mechanism automatically fixes the prefabricated wall panels after hoisting them to the outside, eliminating the need for additional external supports. Simultaneously, the automatic connection mechanism automatically connects adjacent prefabricated wall panels together via structural components after hoisting, thereby improving the overall structural strength and eliminating the need for manual reinforcement, making it convenient to use.

Description

Technical Field

[0001] This invention relates to the field of prefabricated wall panel technology, specifically to a connection node structure for prefabricated building wall panels. Background Technology

[0002] Reinforced concrete slab components, also known as wall panels, are prefabricated concrete panels manufactured in prefabrication plants or on construction sites for use in building assembly. Using prefabricated concrete wall panels to construct prefabricated large-panel buildings can improve the degree of factory and mechanized construction, reduce on-site wet work, save on-site labor, overcome seasonal influences, and shorten the construction cycle.

[0003] The basic steps for installing precast wall panels using existing technology are as follows: First, the precast wall panels are lifted by a machine. Then, the lower vertical reinforcing bars are aligned with the holes, and the wall panels are lowered into place. At this point, since the wall panels have not yet been grouted, they are not stable enough. Temporary supports need to be installed at the four corners of each wall panel. Grouting is carried out after the temporary supports are securely in place. During grouting, the connection between the lower end of the precast wall panel and the floor slab is grouted first, and then grouting is carried out between two adjacent wall panels. Note that when grouting between two adjacent wall panels, since there are no reinforcing bars connecting them, workers need to add additional reinforcing bars between the adjacent wall panels before grouting and tie the reinforcing bars. After about 6 hours, the concrete has solidified, and the installation of the precast wall panels is completed.

[0004] However, existing technologies have the following drawbacks:

[0005] 1. After the precast wall is hoisted and the lower vertical steel bars are aligned with the holes, temporary supports need to be installed at the four corners of each wall panel to ensure the stability of the wall panel. However, at least four supports need to be installed, and they need to be dismantled after the wall panel is grouted. The whole process is extremely troublesome. Therefore, there is currently a lack of a wall panel connection structure that does not require temporary supports after hoisting.

[0006] 2. In the existing technology, due to hoisting, there is no steel reinforcement connection between adjacent wall panels of the precast wall. Immediately after hoisting, workers need to add steel reinforcement between adjacent wall panels and tie the steel reinforcement before grouting so that the two separate and adjacent wall panels can be connected as one before grouting. The work efficiency is still low and affects the progress of the entire project. Summary of the Invention

[0007] The purpose of this invention is to provide a prefabricated building wall panel connection node structure to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated building wall panel connection node structure, comprising a floor slab and prefabricated wall panels, wherein a plurality of bottom-layer pre-embedded steel bars are uniformly fixed on the outer surface of the upper end of the floor slab, and transverse structural reinforcing steel bars are provided horizontally inside the prefabricated wall panels, and vertical structural reinforcing steel bars are provided vertically inside the prefabricated wall panels. A hoisting and fixing mechanism is provided between the floor slab and the prefabricated wall panels for fixing after hoisting, and an automatic connection mechanism is provided between the prefabricated wall panels for automatically connecting two prefabricated wall panels after hoisting.

[0009] Preferably, the lower end of the precast wall panel has a grouting cavity. The cavity is filled with cement, and with the underlying pre-embedded steel bars, the precast wall panel can be stably fixed to the floor slab.

[0010] Preferably, the hoisting and fixing mechanism includes a through hole, a pre-embedded hollow steel pipe, and a structural reinforcing column. The through hole is opened between the horizontal and vertical structural reinforcing bars inside the precast wall panel. The pre-embedded hollow steel pipe is fixedly installed inside the through hole, and the structural reinforcing column is fixedly installed between the bottom pre-embedded reinforcing bars at the upper end of the floor slab. The hoisting and fixing mechanism can automatically fix the precast wall panel after it is hoisted from the outside. During hoisting, the through hole inside the precast wall panel is fitted onto the outer surface of the structural reinforcing column. After the precast wall panel is hoisted, the through hole is completely fitted onto the outer surface of the structural reinforcing column. In this way, the precast wall panel is automatically fixed by the support of the structural reinforcing column and the pre-embedded hollow steel pipe, without the need for additional external support.

[0011] Preferably, the outer surface of the lower end of the through hole is provided with a flared opening, through which the structural reinforcement column can be easily inserted into the pre-embedded hollow steel pipe.

[0012] Preferably, the outer surface of the structural reinforcement column has a notch. This notch allows for sufficient gaps after the structural reinforcement column is inserted into the pre-embedded hollow steel pipe, facilitating the injection of cement slurry into the space between the pre-embedded hollow steel pipe and the structural reinforcement column. The cement can then enter the grouting cavity through the gaps, ensuring a stable connection between the pre-embedded hollow steel pipe and the structural reinforcement column, and filling the grouting cavity with cement. This, combined with the pre-embedded reinforcing bars at the bottom layer, allows for stable fixing of the precast wall panel and the floor slab together.

[0013] Preferably, the automatic connection mechanism includes a reinforcing sleeve, a connecting plate, a spring, a first pressing block, and a second pressing block. A reinforcing sleeve is fitted onto the outer surface of the transverse reinforcing steel bar on the left side. A connecting plate is fixedly installed on the outer surface of the reinforcing sleeve. A spring is installed between the connecting plate and the precast wall panel. The first pressing block is fixedly installed on the outer surface of the connecting plate. A second pressing block is fixedly installed at the lower end of the precast wall panel on the right side. The automatic connection mechanism can automatically connect adjacent precast wall panels together via structural components after they have been hoisted, thereby improving the overall structural strength and eliminating the need for manual reinforcement. It is convenient to use. Specifically, the operation requires first hoisting and installing the precast floor slab on the left side, and then fixing it after the hoisting and installation of the precast floor slab on the left side is completed. Next, the precast floor slab on the right side is hoisted and installed. As the precast floor slab on the right side moves down, the second extrusion block will first contact the inclined surface of the first extrusion block. Then, as the second extrusion block moves down, it can squeeze the first extrusion block and the reinforcing sleeve to move. As the precast floor slab and the second extrusion block move down, the second extrusion block can always contact the vertical surface of the first extrusion block, thus ensuring that the position of the fixing sleeve remains unchanged. After the precast wall slab on the right side is hoisted and fixed, when it is completely fitted onto the upper end of the structural reinforcing column, the first extrusion block and the second extrusion block will be misaligned. At this time, the first extrusion block and the reinforcing sleeve can be reset under the action of the spring, so that the reinforcing sleeve can fit onto the horizontal structural reinforcing steel bar on the right side. In this way, the two precast wall panels on the left and right are connected as one, and grouting can be done directly afterwards.

[0014] Preferably, the upper end of the outer surface of the first extrusion block is provided with an inclination angle, and the lower end of the outer surface of the second extrusion block is provided with an inclination angle. The inclination angle of the second extrusion block is used to press the inclination angle of the first extrusion block, thereby allowing the movable plate and the reinforcing sleeve to move to the left.

[0015] Preferably, the outer surface of the reinforcing sleeve is provided with a through groove, which allows cement to easily enter and fill during grouting, thereby improving the overall structural strength of the device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. During hoisting, the through holes inside the precast wall panel are fitted onto the outer surface of the structural reinforcement column. After the precast wall panel is hoisted, the through holes are completely fitted onto the outer surface of the structural reinforcement column. In this way, the precast wall panel is automatically fixed by the support of the structural reinforcement column and the pre-embedded hollow steel pipe, without the need for additional external support.

[0018] 2. During hoisting, the precast floor slab on the left is hoisted and installed first. After the precast floor slab on the left is hoisted, installed, and fixed, the precast floor slab on the right is hoisted and installed. When the precast floor slab on the right moves down, the second extrusion block first contacts the inclined surface of the first extrusion block. Then, as the second extrusion block moves down, it can squeeze the first extrusion block and the reinforcing sleeve to move. As the precast floor slab and the second extrusion block move down, the second extrusion block can always contact the vertical surface of the first extrusion block, thus ensuring that the position of the fixing sleeve remains unchanged. After the precast floor slab on the right is hoisted and fixed, when it is completely fitted onto the upper end of the structural reinforcing column, the first extrusion block and the second extrusion block will be misaligned. At this time, the first extrusion block and the reinforcing sleeve can be reset under the action of the spring, so that the reinforcing sleeve can fit onto the transverse structural reinforcing steel bar on the right. In this way, the two precast wall panels on the left and right are connected as one, and grouting can be done directly afterwards, which can improve the overall structural strength and eliminate the need for manual addition of connecting steel bars, making it more convenient to use.

[0019] 3. After hoisting, grouting is performed. During grouting, the notch allows for sufficient gaps after the structural reinforcing column is inserted into the pre-embedded hollow steel pipe. This facilitates the injection of cement slurry into the space between the pre-embedded hollow steel pipe and the structural reinforcing column. The cement can then enter the grouting cavity through the gap. This not only ensures a stable connection between the pre-embedded hollow steel pipe and the structural reinforcing column but also fills the grouting cavity with cement. Combined with the pre-embedded reinforcing steel at the bottom layer, this allows for stable fixing of the precast wall panel and the floor slab together. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a prefabricated building wall panel connection node structure according to the present invention;

[0021] Figure 2 This invention relates to a prefabricated building wall panel connection node structure. Figure 1 A sectional view;

[0022] Figure 3 This is an installation view of the prefabricated wall panel on the left side of a prefabricated building wall panel connection node structure according to the present invention.

[0023] Figure 4 This is an installation view of the prefabricated wall panel on the right side of a prefabricated building wall panel connection node structure according to the present invention.

[0024] Figure 5 This is a completed installation view of a prefabricated wall panel according to the prefabricated building wall panel connection node structure of the present invention;

[0025] Figure 6 This invention relates to a prefabricated building wall panel connection node structure. Figure 5 A sectional view;

[0026] Figure 7 This is a cross-sectional view of a prefabricated wall panel with a prefabricated building wall panel connection node structure according to the present invention.

[0027] Figure 8 This invention relates to a prefabricated building wall panel connection node structure. Figure 2 Enlarged view at point A in the middle;

[0028] Figure 9 This invention relates to a prefabricated building wall panel connection node structure. Figure 2 A magnified view of point B in the middle.

[0029] In the diagram: 1. Floor slab; 2. Precast wall panel; 3. Bottom layer embedded steel reinforcement; 4. Horizontal structural reinforcement; 5. Vertical structural reinforcement; 6. Grouting cavity; 7. Through hole; 8. Embedded hollow steel pipe; 9. Structural reinforcement column; 10. Trumpet mouth; 11. Notch; 12. Reinforcing sleeve; 13. Connecting plate; 14. Spring; 15. First extrusion block; 16. Second extrusion block; 17. Through groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-9 This invention provides a technical solution: a prefabricated building wall panel connection node structure, including a floor slab 1 and a prefabricated wall panel 2. A plurality of bottom-layer pre-embedded steel bars 3 are uniformly fixed on the outer surface of the upper end of the floor slab 1. The bottom-layer pre-embedded steel bars 3 are installed on the upper end of the floor slab 1 by pre-embedding. The prefabricated wall panel 2 is provided with horizontal structural reinforcing steel bars 4 in the horizontal direction and vertical structural reinforcing steel bars 5 in the vertical direction. The horizontal structural reinforcing steel bars 4 and vertical structural reinforcing steel bars 5 are directly placed into the mold during the production of the prefabricated wall panel 2, and then production and installation can be carried out. A hoisting and fixing mechanism is provided between the floor slab 1 and the prefabricated wall panel 2 for fixing after hoisting. An automatic connection mechanism is provided between the prefabricated wall panels 2 for automatically connecting two prefabricated wall panels 2 after hoisting.

[0032] The precast wall panel 2 has a grouting cavity 6 at its lower end. The grouting cavity 6 is filled with cement. At this time, together with the bottom embedded steel bars 3, the precast wall panel 2 and the floor slab 1 can be stably fixed together.

[0033] The hoisting and fixing mechanism includes a through hole 7, a pre-embedded hollow steel pipe 8, and a structural reinforcing column 9. The through hole 7 is opened between the horizontal structural reinforcing steel bars 4 and the vertical structural reinforcing steel bars 5 inside the precast wall panel 2. The pre-embedded hollow steel pipe 8 is fixedly installed inside the through hole 7. The structural reinforcing column 9 is fixedly installed between the pre-embedded steel bars 3 at the bottom of the upper end of the floor slab 1. The hoisting and fixing mechanism can automatically fix the precast wall panel 2 after it is hoisted from the outside. During hoisting, the through hole 7 inside the precast wall panel 2 is fitted onto the outer surface of the structural reinforcing column 9. After the precast wall panel 2 is hoisted, the through hole 7 is completely fitted onto the outer surface of the structural reinforcing column 9. In this way, the precast wall panel 2 is automatically fixed by the support of the structural reinforcing column 9 and the pre-embedded hollow steel pipe 8, without the need for additional external support.

[0034] The lower outer surface of the through hole 7 is provided with a flared mouth 10, through which the structural reinforcement column 9 can be easily inserted into the pre-embedded hollow steel pipe 8.

[0035] The outer surface of the structural reinforcement column 9 has a notch 11. The notch 11 allows for a sufficient gap after the structural reinforcement column 9 is inserted into the pre-embedded hollow steel pipe 8, which facilitates the injection of cement slurry into the space between the pre-embedded hollow steel pipe 8 and the structural reinforcement column 9. The cement can then enter the grouting cavity 6 through the gap. This not only ensures a stable connection between the pre-embedded hollow steel pipe 8 and the structural reinforcement column 9, but also fills the grouting cavity 6 with cement. Combined with the bottom pre-embedded steel bar 3, this allows the precast wall panel 2 and the floor slab 1 to be stably fixed together.

[0036] The automatic connection mechanism includes a reinforcing sleeve 12, a connecting plate 13, a spring 14, a first pressing block 15, and a second pressing block 16. The reinforcing sleeve 12 is fitted onto the outer surface of the transverse reinforcing steel bar 4 on the left side. The connecting plate 13 is fixedly installed on the outer surface of the reinforcing sleeve 12. A spring 14 is installed between the connecting plate 13 and the precast wall panel 2. The first pressing block 15 is fixedly installed on the outer surface of the connecting plate 13. The second pressing block 16 is fixedly installed at the lower end of the precast wall panel 2 on the right side. Through the automatic connection mechanism, adjacent precast wall panels 2 can be automatically connected together via structural components after hoisting, thereby improving the overall structural strength and eliminating the need for manual reinforcement. It is convenient to use. The specific operation steps are: first, hoist and install the precast floor slab 1 on the left side; after the precast floor slab 1 on the left side is hoisted, install, and fixed, then... The precast floor slab 1 on the right side is hoisted and installed. When the precast floor slab 1 on the right side moves down, the second extrusion block 16 will first contact the inclined surface of the first extrusion block 15. Then, as the second extrusion block 16 moves down, it can squeeze the first extrusion block 15 and the reinforcing sleeve 12 to move. Then, as the precast floor slab 1 and the second extrusion block 16 move down, the second extrusion block 16 can always contact the vertical surface of the first extrusion block 15, so as to ensure that the position of the fixed sleeve does not move. After the precast wall slab on the right side is hoisted and fixed, when it is completely fitted on the upper end of the structural reinforcing column 9, the first extrusion block 15 and the second extrusion block 16 will be misaligned. At this time, the first extrusion block 15 and the reinforcing sleeve 12 can be reset under the action of the spring 14, so that the reinforcing sleeve 12 can fit the transverse structural reinforcing steel bar 4 on the right side. In this way, the two precast wall panels 2 on the left and right are connected as one, and grouting can be done directly afterwards.

[0037] The upper end of the outer surface of the first extrusion block 15 is provided with an inclination angle, and the lower end of the outer surface of the second extrusion block 16 is provided with an inclination angle. The inclination angle of the second extrusion block 16 is used to press the inclination angle of the first extrusion block 15, thereby allowing the movable plate and the reinforcing sleeve 12 to move to the left.

[0038] The outer surface of the reinforcing sleeve 12 is provided with a through groove 17, which allows cement to easily enter and fill during grouting, thereby improving the overall structural strength of the device.

[0039] Working principle: When using the device, the precast wall panel 2 can be installed on the floor slab 1 by hoisting. During hoisting, the through hole 7 inside the precast wall panel 2 is fitted onto the outer surface of the structural reinforcing column 9. After the precast wall panel 2 is hoisted, the through hole 7 is completely fitted onto the outer surface of the structural reinforcing column 9. In this way, the precast wall panel 2 is automatically fixed by the support of the structural reinforcing column 9 and the pre-embedded hollow steel pipe 8, without the need for additional external support. However, it is important to hoist in sequence during the hoisting process. Figure 3As shown, the precast wall panels 2 are hoisted and installed sequentially from left to right. During hoisting, the left precast floor slab 1 is hoisted and installed first. After the left precast floor slab 1 is hoisted, the right precast floor slab 1 is hoisted and installed. When the right precast floor slab 1 moves downwards, the second pressing block 16 first contacts the inclined surface of the first pressing block 15. Then, as the second pressing block 16 moves downwards, it can press the first pressing block 15 and the reinforcing sleeve 12 to move. Subsequently, as the precast floor slab 1 and the second pressing block 16 move downwards, the second pressing block 16 can remain in contact with the vertical surface of the first pressing block 15, thus ensuring the fixed sleeve remains stationary. After the right precast wall panel is hoisted and fixed, when it is completely fitted onto the upper end of the structural reinforcing column 9, the first pressing block 15 and the second pressing block 16 will be misaligned. At this time, the first pressing block 15 and the reinforcing sleeve 12 can be reset under the action of the spring 14, thus ensuring the reinforcement... The strong sleeve 12 is fitted with the transverse structural reinforcing steel bar 4 on the right side, thus connecting the two precast wall panels 2 on the left and right into one unit. Grouting can be done directly afterward, which can improve the overall structural strength and eliminate the need for manual addition of connecting steel bars, making it more convenient to use. After hoisting, grouting is carried out. During grouting, the notch 11 leaves a sufficient gap after the structural reinforcing column 9 is inserted into the pre-embedded hollow steel pipe 8, so that cement slurry can be easily injected into the space between the pre-embedded hollow steel pipe 8 and the structural reinforcing column 9. Then, the cement can enter the grouting cavity 6 through the gap 11. At this time, not only is the pre-embedded hollow steel pipe 8 and the structural reinforcing column 9 stably connected, but the grouting cavity 6 is also filled with cement. At this time, together with the bottom pre-embedded steel bar 3, the precast wall panel 2 and the floor slab 1 can be stably fixed together. This is the working principle of the prefabricated building wall panel connection node structure of the present invention.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated building wall panel connection node structure, comprising a floor slab (1) and a prefabricated wall panel (2), characterized in that: The upper outer surface of the floor slab (1) is uniformly fixed with several bottom-layer pre-embedded steel bars (3). The precast wall panel (2) is provided with horizontal structural reinforcing bars (4) in the horizontal direction and vertical structural reinforcing bars (5) in the vertical direction. A hoisting and fixing mechanism is provided between the floor slab (1) and the precast wall panel (2) so that it can be fixed after hoisting. An automatic connection mechanism is provided between the precast wall panels (2) so that the two precast wall panels (2) can be automatically connected after hoisting. The automatic connection mechanism includes a reinforcing sleeve (12), a connecting plate (13), a spring (14), a first extrusion block (15), and a second extrusion block. The pressure block (16) has a reinforcing sleeve (12) fitted on the outer surface of the transverse structural reinforcing steel bar (4) on the left side. A connecting plate (13) is fixedly installed on the outer surface of the reinforcing sleeve (12). A spring (14) is installed between the connecting plate (13) and the precast wall panel (2). A first pressing block (15) is fixedly installed on the outer surface of the connecting plate (13). A second pressing block (16) is fixedly installed at the lower end of the precast wall panel (2) on the right side. An inclined angle is opened at the upper end of the outer surface of the first pressing block (15). An inclined angle is opened at the lower end of the outer surface of the second pressing block (16). A through groove (17) is opened on the outer surface of the reinforcing sleeve (12).

2. The prefabricated building wall panel connection node structure according to claim 1, characterized in that: The precast wall panel (2) has a grouting cavity (6) at its lower interior end.

3. The prefabricated building wall panel connection node structure according to claim 1, characterized in that: The hoisting and fixing mechanism includes a through hole (7), a pre-embedded hollow steel pipe (8), and a structural reinforcement column (9). The through hole (7) is opened between the horizontal structural reinforcement steel bar (4) and the vertical structural reinforcement steel bar (5) inside the precast wall panel (2). The pre-embedded hollow steel pipe (8) is fixedly installed inside the through hole (7). The structural reinforcement column (9) is fixedly installed between the bottom pre-embedded steel bars (3) at the upper end of the floor slab (1).

4. The prefabricated building wall panel connection node structure according to claim 3, characterized in that: A flared opening (10) is provided on the outer surface of the lower end of the through hole (7).

5. The prefabricated building wall panel connection node structure according to claim 3, characterized in that: The outer surface of the structurally reinforced column (9) has a notch (11).

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