Top and bottom wallboard connecting structure and fabricated building

Abstract

The application provides a kind of upper and lower wallboard connecting structure and prefabricated building using the connecting structure, the connecting structure includes two prefabricated wallboards and multiple connecting pieces, the bottom of the upper wallboard is provided with multiple bottom assembly slots, and the top of the lower wallboard is provided with multiple top assembly slots;The connecting piece is provided with an adjustable shim, and the height position of the adjustable shim is adjustable, the lower part of the connecting piece is embedded in the top assembly slot, and the upper part is embedded in the bottom assembly slot, at least part of the adjustable shim is attached to the lower end surface of the upper wallboard to support the upper wallboard to be vertically spaced from the lower wallboard;The plate gap between the upper wallboard and the lower wallboard is filled with cast-in-place concrete, and the cast-in-place concrete also fills each bottom assembly slot and each top assembly slot.In the application, the assembly construction operation is convenient and fast, the connecting piece and the cast-in-place concrete can form a steel-concrete wet joint or other form of high-strength wet joint, ensuring the strength and application reliability of the upper and lower wallboard connecting structure.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to an upper and lower wall panel connection structure and a prefabricated building using the upper and lower wall panel connection structure. Background Technology

[0002] In the construction of side walls for building projects such as residential buildings, prefabricated construction methods are increasingly widely used due to their significant advantages, including factory production of most components, minimal or no wet work on site, fast installation speed, minimal impact on the surrounding environment, and reduced construction waste. Currently, prefabricated construction of wall panels mainly uses wet joints to connect two precast wall panels. During wet joint construction, reinforcing bars need to be pre-embedded in the precast wall panels, which is inconvenient for the production, transportation, and storage of precast wall panels. Furthermore, adjusting the height and level of the upper wall panel is difficult when connecting upper and lower wall panels. Chinese patent CN218149045U discloses a split prefabricated building component and a prefabricated house, which can achieve bolted assembly connections between wall panels. The bolts can be used to adjust the height and level of the upper wall panel, but this requires wall panels of a specific shape. The bolted assembly method suffers from problems such as complex operation, high positioning requirements, and difficulty in ensuring connection reliability. Summary of the Invention

[0003] In view of the technical defects and drawbacks existing in the prior art, the present invention provides an upper and lower wall panel connection structure to overcome or at least partially solve the above problems, and a prefabricated building using the upper and lower wall panel connection structure.

[0004] The present invention provides a connection structure for upper and lower wall panels, including an upper wall panel and a lower wall panel. Both the upper wall panel and the lower wall panel are prefabricated wall panels. Multiple bottom mounting grooves are provided at the bottom of the upper wall panel and multiple top mounting grooves are provided at the top of the lower wall panel.

[0005] It also includes multiple connectors, each connector having an adjustable pad with an adjustable height. The lower part of the connector is embedded in a top mounting groove, and the upper part is embedded in a bottom mounting groove. At least a portion of the adjustable pad is in contact with the lower end face of the upper wall panel to support the upper wall panel so that it is vertically aligned with the lower wall panel. The gap between the upper wall panel and the lower wall panel is filled with cast-in-place concrete, and the cast-in-place concrete also fills each of the bottom mounting grooves and each of the top mounting grooves.

[0006] As one embodiment, the connector is an X-shaped connector, which includes two sets of upper legs, two sets of lower legs, and an X-shaped connecting section connecting the two sets of upper legs and the two sets of lower legs. The two sets of upper legs of each X-shaped connector are vertically inserted into two adjacent bottom mounting slots, and the two sets of lower legs of each X-shaped connector are vertically inserted into two adjacent top mounting slots. The adjusting pad is provided on the upper legs.

[0007] As one embodiment, the upper support leg includes multiple upper support rods arranged sequentially along the thickness direction of the wall panel. The bottom end of each upper support rod is connected to the X-shaped connecting section. At least some of the upper support rods are screwed with adjusting nuts. Each upper support rod passes through a corresponding adjusting pad and is supported by the corresponding adjusting nut.

[0008] As one implementation method, the X-shaped connecting section includes a plurality of X-shaped connectors arranged sequentially along the thickness direction of the wall panel. The two top ends of the X-shaped connectors are respectively connected to two sets of upper support legs, and the two bottom ends of the X-shaped connectors are respectively connected to two sets of lower support legs.

[0009] As one embodiment, the connector includes a main support body, the lower part of which is embedded in one of the top mounting slots and the upper part of which is embedded in one of the bottom mounting slots; the adjusting pad is disposed on the main support body, and the height position of the adjusting pad on the main support body is adjustable.

[0010] As one embodiment, the top mounting groove, in addition to penetrating the top surface of the lower wall panel to form a groove, also penetrates one side surface of the lower wall panel to form a first lateral opening; and / or, the bottom mounting groove, in addition to penetrating the bottom surface of the upper wall panel to form a groove, also penetrates one side surface of the upper wall panel to form a second lateral opening.

[0011] As one embodiment, when the top mounting groove has a first lateral opening, a first plug is provided at the first lateral opening, and the height of the first plug is less than the groove depth of the top mounting groove; when the bottom mounting groove has a second lateral opening, a second plug is provided at the second lateral opening, and the height of the second plug is less than the groove depth of the bottom mounting groove.

[0012] The present invention also provides a prefabricated building in which the upper and lower adjacent wall panels are assembled and connected by the above-mentioned upper and lower wall panel connection structure.

[0013] Furthermore, the prefabricated building is a multi-story building, with each floor slab resting on the corresponding lower wall slab. The floor slab is a precast slab with pre-reserved assembly reinforcement bars. The assembly reinforcement bars extend into the gap between adjacent upper and lower wall slabs and overlap or connect with the connectors.

[0014] Furthermore, an X-shaped connector is provided at the node between the four adjacent wall panels. The X-shaped connector includes two sets of upper legs, two sets of lower legs, and an X-shaped connecting section connecting the two sets of upper legs and the two sets of lower legs. The two sets of upper legs of the X-shaped connector are vertically inserted into the bottom mounting grooves of the two upper wall panels, and the two sets of lower legs of the X-shaped connector are vertically inserted into the top mounting grooves of the two lower wall panels.

[0015] The present invention has the following beneficial effects:

[0016] This invention utilizes connectors to achieve the assembly connection between the upper and lower wall panels, offering convenient and quick operation. The connectors and cast-in-place concrete can form reinforced concrete wet joints or other forms of high-strength wet joints, ensuring the structural strength and reliability of the connection between the upper and lower wall panels. No reinforcement bars need to be pre-installed on the upper and lower wall panels. Compared to using prefabricated wall panels of specific shapes and assembling them with bolts, the wall panel structure in this invention is simple, facilitating standardized production and construction, and reducing prefabrication and construction costs. Because the position of the adjusting shim is adjustable, the distance between the upper and lower wall panels can be adjusted, as can the flatness / levelness of the upper wall panel, thereby improving project quality.

[0017] In this invention, node construction can be completed only on the floor slab without the need for scaffolding, making construction convenient, safe, and cost-effective.

[0018] In this invention, the wall panel has good overall integrity, especially when the bottom mounting groove / top mounting groove does not penetrate the outer wall surface of the wall panel, which can effectively improve the waterproofness of the outer wall. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a connector including a main support body provided in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram showing the fit between the connector and the lower wall panel;

[0021] Figure 3 for Figure 1 A schematic diagram showing the fit between the connector and the upper wall panel;

[0022] Figure 4 and Figure 5 This is a schematic diagram of a connection structure between upper and lower wall panels provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram showing the installation of the first and second plugs;

[0024] Figure 7 This is a schematic diagram of the aftermath of cast-in-place concrete.

[0025] Figure 8 and Figure 9 These are schematic diagrams of the structures of two X-type connectors provided in embodiments of the present invention;

[0026] Figure 10 for Figure 8 A schematic diagram showing the fit between the connector and the lower wall panel;

[0027] Figure 11 This is a schematic diagram of another upper and lower wall panel connection structure provided in an embodiment of the present invention;

[0028] Figure 12 for Figure 11 A schematic diagram after the plug is installed. Detailed Implementation

[0029] 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 a part of the present invention, and not all of the 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.

[0030] Example 1

[0031] like Figures 1-12 As shown, this embodiment of the invention provides a connection structure for upper and lower wall panels, which includes an upper wall panel 11 and a lower wall panel 12. Both the upper wall panel 11 and the lower wall panel 12 are precast wall panels. Multiple bottom mounting grooves 111 are formed at the bottom of the upper wall panel 11, and multiple top mounting grooves 121 are formed at the top of the lower wall panel 12. It also includes multiple connectors 2, each connector 2 having an adjusting pad 22 with adjustable height. The lower part of the connector 2 is embedded in the top mounting groove 121, and the upper part is embedded in the bottom mounting groove 111. Each connector 2 supports the upper wall panel 11 so that it is vertically aligned with the lower wall panel 12. The gap between the upper wall panel 11 and the lower wall panel 12 is filled with cast-in-place concrete, and the cast-in-place concrete also fills each of the bottom mounting grooves 111 and each of the top mounting grooves 121.

[0032] In one embodiment, such as Figures 2-7 as well as Figures 10-12The top mounting groove 121, in addition to penetrating the top surface of the lower wall panel 12 to form a groove, also penetrates one side surface of the lower wall panel 12 to form a first lateral opening; and / or, the bottom mounting groove 111, in addition to penetrating the bottom surface of the upper wall panel 11 to form a groove, also penetrates one side surface of the upper wall panel 11 to form a second lateral opening; preferably, both the first and second lateral openings are provided, and the surface of the upper wall panel 11 penetrated by the bottom mounting groove 111 and the surface of the lower wall panel 12 penetrated by the top mounting groove 121 are preferably located on the same side, for example, on the inner side of the building. By designing the bottom mounting groove 111 and the top mounting groove 121 to penetrate one side surface of the corresponding wall panel to form lateral openings, the installation and adjustment of the connector 2 can be facilitated. In particular, the lateral openings can also serve as channels for pouring cast-in-place concrete, improving the convenience, efficiency, and quality of wet joint construction.

[0033] The bottom mounting groove 111 and the top mounting groove 121 are preferably not through the other side of the corresponding wall panel. In this way, the non-through part can act as a template during wet joint construction. The three walls of the mounting groove can effectively constrain and limit the connector 2, which can improve the reliability of the connection structure and the quality of the project. When the bottom mounting groove 111 / top mounting groove 121 is not through the outer wall surface of the wall panel, the waterproofness of the outer wall can be effectively improved.

[0034] As mentioned above, the lateral opening can serve as a pouring channel for cast-in-place concrete; see [link / reference] Figure 6 , Figure 7 as well as Figure 12 Preferably, when the top mounting groove 121 has a first lateral opening, a first plug 31 is provided at the first lateral opening, and the height of the first plug 31 is less than the groove depth of the top mounting groove 121; when the bottom mounting groove 111 has a second lateral opening, a second plug 32 is provided at the second lateral opening, and the height of the second plug 32 is less than the groove depth of the bottom mounting groove 111. Since the height of the first plug 31 is less than the groove depth of the top mounting groove 121, the portion of the first lateral opening that is not blocked by the first plug 31 can serve as an air outlet 34 or a grouting hole 33; since the height of the second plug 32 is less than the groove depth of the bottom mounting groove 111, the portion of the second lateral opening that is not blocked by the second plug 32 can serve as an air outlet 34 or a grouting hole 33.

[0035] Preferably, such as Figure 6 , Figure 7 as well as Figure 12The second plug 32 has a gap between its top end and the top end of the second lateral opening to form a grouting hole 33 between them; the second plug 32 has a gap between its bottom end and the bottom end of the second lateral opening to form an air outlet 34 between them; the first plug 31 has a gap between its top end and the top end of the first lateral opening to form a grouting hole 33 between them; the first plug 31 has a gap between its bottom end and the bottom end of the first lateral opening to form an air outlet 34 between them. Based on this structure, multi-channel grouting and multi-channel air outlets can be achieved, improving the construction efficiency and quality of wet joints.

[0036] The first plug 31 and the second plug 32 mentioned above can be soft plugs made of rubber or the like, or they can be rigid plugs with an interference fit between them and the side opening.

[0037] Because the position of the adjusting shim 22 is adjustable, the distance between the upper wall panel 11 and the lower wall panel 12 can be adjusted, as can the flatness / levelness of the upper wall panel 11, thereby improving the quality of the project. The width of the adjusting shim 22 is greater than the width of the bottom mounting groove 111, thus reliably supporting the upper wall panel 11. Preferably, the length of the adjusting shim 22 is less than the length of the opening of the bottom mounting groove 111, such as... Figure 7 This ensures that the cast-in-place concrete between the panels is integrated with the concrete in the bottom assembly groove 111 and the top assembly groove 121, which can correspondingly improve the structural integrity and coordinated stress-bearing capacity of the upper wall panel 11 and the lower wall panel 12.

[0038] In one embodiment, such as Figures 1-4 The connector 2 includes a main support body 21, the lower part of which is embedded in one of the top mounting grooves 121 and the upper part is embedded in one of the bottom mounting grooves 111; an adjusting pad 22 is provided on the main support body 21, and the height of the adjusting pad 22 on the main support body 21 is adjustable.

[0039] Preferably, the bottom end of the main support 21 rests on the bottom of the corresponding top mounting groove 121, and the top end of the main support 21 abuts against the bottom of the corresponding bottom mounting groove 111. This provides better support stability for the upper wall panel 11, a clearer and more reliable force transmission path, and better transfer of the upper load to the lower part. It should be noted that the bottom of the bottom mounting groove 111 is the part opposite to its opening, and this bottom is located directly above the opening (for example, flush with the top end of the second lateral opening mentioned above).

[0040] More preferably, such as Figures 1-7The main support body 21 includes multiple main support rods 211 arranged sequentially along the thickness direction of the wall panel. At least some of the main support rods 211 are screwed with adjusting nuts 23. Each main support rod 211 passes through a corresponding adjusting pad 22 and is supported by the corresponding adjusting nut 23. In this embodiment, the main support body 21 includes two main support rods 211, each screwed with an adjusting nut 23. In this design, the position of the adjusting pad 22 can be adjusted by turning the adjusting nut 23. This operation is convenient and quick, ensures the accuracy of the adjusting pad 22's position, and provides good constraint on the adjusting pad 22, preventing it from becoming displaced due to excessive force.

[0041] In one embodiment, the main support body 21 further includes a bottom connecting rod 212 respectively connected to the bottom end of each main support rod 211, the bottom connecting rod 212 supporting the bottom of the corresponding top mounting groove 121; and / or, the main support body 21 further includes a top connecting rod respectively connected to the top end of each main support rod 211, the top connecting rod abutting against the bottom of the corresponding bottom mounting groove 111. Optionally, as Figure 1 and Figure 7 The bottom connecting rod 212 is an arc-shaped rod. When the main support body 21 includes two main support rods 211, a U-shaped structure is formed at the bottom of the main support body 21, which can obtain better stress performance. Similarly, when a top connecting rod is provided, a U-shaped structure is formed at the top of the main support body 21.

[0042] The main support 21 can be a steel component, and the wet joint is accordingly constructed as a steel-concrete joint; of course, the main support 21 can also be made of other high-strength materials.

[0043] In one embodiment, the main support rod 211 is clearance-fitted with the top mounting groove 121, and the main support rod 211 is clearance-fitted with the bottom mounting groove 111. This can better constrain the main support rod 211 and prevent it from shaking and affecting the quality of the project.

[0044] In one embodiment, such as Figures 8-12 The aforementioned connector 2 is an X-type connector 2, which includes two sets of upper support legs 25, two sets of lower support legs 26, and an X-shaped connecting section 27 connecting the two sets of upper support legs 25 and the two sets of lower support legs 26. The two sets of upper support legs 25 of each X-type connector 2 are vertically inserted into two adjacent bottom mounting slots 111, and the two sets of lower support legs 26 of each X-type connector 2 are vertically inserted into two adjacent top mounting slots 121. An adjusting pad 22 is provided on the upper support legs 25.

[0045] The use of X-type connectors 2 has several advantages. First, a single connector 2 can form multiple points of support with the upper wall panel 11 and the lower wall panel 12, resulting in higher structural stability, a more uniform force transmission path and load transfer, which is beneficial to the reliability of the building in its later service life. Second, it can connect two bottom assembly slots 111 and two top assembly slots 121, effectively improving the coordinated force-bearing performance of the upper and lower wall panels 12, and also effectively improving the lateral force-bearing performance of the building, thereby enhancing the application effect of prefabricated buildings.

[0046] The X-shaped connection section has a better bonding effect with the cast-in-place concrete. The X-shaped connection section has excellent multi-directional stress performance and can significantly improve the mechanical properties of concrete. It can ensure the structural performance of the wet joint without the need to set additional steel bars in the gap between the upper and lower wall panels 12, thereby avoiding the wet joint becoming a weak link in the prefabricated building.

[0047] More preferably, such as Figures 8-11 The upper support leg 25 includes multiple upper support rods 251 arranged sequentially along the thickness direction of the wall panel. The bottom end of each upper support rod 251 is connected to the X-shaped connecting section 27. At least some of the upper support rods 251 are screwed with adjusting nuts 23. Each upper support rod 251 passes through a corresponding adjusting pad 22 and is supported by the corresponding adjusting nut 23. In this embodiment, the main support body includes two upper support rods 251, and adjusting nuts 23 are screwed onto each of the two upper support rods 251. In this solution, the position of the adjusting pad 22 can be adjusted by turning the adjusting nut 23. The operation is convenient and quick, and it can ensure the accuracy of the position of the adjusting pad 22. The constraint effect on the adjusting pad 22 is also good, which can prevent the adjusting pad 22 from becoming displaced due to excessive force.

[0048] The adjusting pads 22 of the two sets of upper support legs 25 can be independent or connected as one unit. When the adjusting pads 22 of the two sets of upper support legs 25 are independent, the width of the adjusting pad 22 is greater than the width of the bottom mounting groove 111, so as to reliably support the upper wall panel 11.

[0049] Preferably, such as Figures 8-11 The lower support leg 26 includes multiple lower support rods 261 arranged sequentially along the thickness direction of the wall panel, and the top end of each lower support rod 261 is connected to the X-shaped connecting section 27. In this embodiment, the lower support leg 26 includes two lower support rods 261.

[0050] The axes of the upper support rod 251 and the lower support rod 261 are both parallel to the vertical direction to ensure that the upper support leg 25 is vertically inserted into the bottom mounting groove 111 and the lower support leg 26 is vertically inserted into the top mounting groove 121. When the number of upper support rods 251 and lower support rods 261 is the same, preferably, the upper support rods 251 and lower support rods 261 are arranged opposite each other, and the upper support rod 251 and the corresponding lower support rod 261 are coaxial. Correspondingly, the number of bottom mounting grooves 111 and top mounting grooves 121 is the same and they are arranged vertically opposite each other.

[0051] Similarly, a bottom connecting rod 262 can also be provided in the lower support leg 26. This bottom connecting rod 262 is connected to the bottom end of each lower support rod 261, and rests on the bottom of the corresponding top mounting groove 121. Optionally, such as Figure 8 and Figure 9 The bottom connecting rod 262 is an arc-shaped rod. When the lower support leg 26 includes two lower support rods 261, a U-shaped structure is formed at the bottom end of the lower support leg 26, which can obtain better stress performance.

[0052] In one embodiment, the upper support leg 25 further includes a top connecting rod that is connected to the top end of each upper support rod 251, and the top connecting rod abuts against the bottom of the corresponding bottom mounting groove 111. Similarly, when the main support body includes two upper support rods 251, a U-shaped structure is formed at the top end of the main support body accordingly.

[0053] In one embodiment, such as Figures 8-12 The X-shaped connecting section 27 includes a plurality of X-shaped connectors arranged sequentially along the thickness direction of the wall panel. The two top ends of the X-shaped connectors are respectively connected to two sets of upper support legs 25, and the two bottom ends of the X-shaped connectors are respectively connected to two sets of lower support legs 26.

[0054] Preferably, the number of upper support rods 251 and lower support rods 261 is twice that of the X-shaped connectors, so that each X-shaped connector connects two upper support rods 251 and two lower support rods 261. In one embodiment, such as Figure 9 The two upper support rods 251 connected by the X-shaped connector belong to the same group of upper support legs 25, meaning that the two upper support rods 251 are inserted into the same bottom mounting groove 111. Similarly, the two lower support rods 261 connected by the X-shaped connector belong to the same group of lower support legs 26, meaning that the two lower support rods 261 are inserted into the same top mounting groove 121. In another embodiment, such as... Figure 8The two upper support rods 251 connected by the X-shaped connector belong to two sets of upper support legs 25, that is, the two upper support rods 251 are inserted into two bottom mounting slots 111 respectively. The two lower support rods 261 connected by the X-shaped connector belong to two sets of lower support legs 26, that is, the two lower support rods 261 are inserted into two top mounting slots 121. In the latter configuration, the X-shaped connector laterally connects the support rods in the two bottom mounting slots 111 and the two top mounting slots 121. The upper load can be transferred to the two lower support rods 261 through the X-shaped connector, increasing the load transfer path, improving the uniformity and effectiveness of load transfer, and also improving the coordinated stress-bearing capacity of each support rod and the upper and lower wall panels 12.

[0055] Furthermore, the X-shaped connecting section 27 also includes multiple bridging components, which can connect the various X-shaped connecting components into a whole, further improving the structural strength, stiffness, and stress performance of the X-shaped connector 2. The bridging components can be horizontally positioned or at a certain angle to the horizontal direction.

[0056] The aforementioned X-shaped connector, upper support rod 251, and lower support rod 261 are preferably steel components, thereby making the wet joint a steel-concrete joint; of course, other high-strength materials can also be used.

[0057] Preferably, the lower support rod 261 is clearance-fitted with the top mounting groove 121, and the upper support rod 251 is clearance-fitted with the bottom mounting groove 111. This can better constrain the upper support rod 251 and the lower support rod 261, preventing them from shaking and affecting the quality of the project.

[0058] The spacing between the two sets of upper support legs 25 and the spacing between the two sets of lower support legs 26 can be set according to the actual engineering conditions.

[0059] Each wall panel has multiple top assembly slots 121 at the top and multiple bottom assembly slots 111 at the bottom. In this way, the wall panels can be prefabricated in a standardized manner, and standardized construction can be carried out on site. This can improve the quality of the project, reduce the construction cost, and facilitate the promotion and application of prefabricated construction technology.

[0060] In the above scheme, the node construction only needs to be completed on the floor slab, including the installation of connector 2 and the connection of the upper wall panel 11, etc. There is no need to carry out construction operations on the outside of the exterior wall, and no need to erect scaffolding or other auxiliary facilities. The construction is convenient, safe, and can save construction costs.

[0061] Example 2

[0062] This invention provides a prefabricated building in which adjacent upper and lower wall panels are assembled and connected using the upper and lower wall panel connection structure provided in Embodiment 1 above.

[0063] Among them, the aforementioned prefabricated buildings can be residential buildings, commercial factory buildings, and other building types.

[0064] Preferably, the prefabricated building is a multi-story building, with each floor slab resting on the corresponding lower wall panel 12; wherein, the height of each wall panel can be matched with the height of a single floor of the building, so that the upper and lower adjacent wall panels are the connection between the upper and lower wall panels.

[0065] The floor slabs mentioned above are preferably precast slabs.

[0066] In one embodiment, based on the opening of the bottom mounting groove 111 and the top mounting groove 121, a tenon can be provided at the bottom of the floor slab. The tenon is inserted into the top mounting groove 121 of the lower wall panel 12. This allows the floor slab and the lower wall panel 12 to be tenoned together on the basis of wet joint connection, which can improve the structural strength and service reliability of the building. For example, after the connector 2 is inserted into the corresponding top mounting groove 121, one end of the floor slab is placed on the lower wall panel 12, and the tenon at that end of the floor slab is tenoned into the top mounting groove 121. The tenon can also serve as a pouring plug. Optionally, the top mounting groove 121 can be a stepped groove that is wider at the top and narrower at the bottom, with the tenon inserted into the upper wide section of the stepped groove; furthermore, vertical steel bars can be reserved at the bottom of the tenon, which extend into the lower narrow section of the stepped groove, which can effectively improve the bonding strength and connection reliability between the floor slab and the upper and lower wall panels 12 and the cast-in-place concrete, and also improve the multi-directional load-bearing performance of the floor slab.

[0067] In another embodiment, a clearance groove is provided at the end of the floor slab, which communicates with the top mounting groove 121 of the lower wall panel 12. The connector 2 extends partially into the clearance groove (for example, the lower support leg 26 and / or the X-shaped connector 2 can extend into the clearance groove). In this way, not only can the bonding area between the cast-in-place concrete and the floor slab be increased, but the connector 2 can also connect the floor slab with the upper wall panel 11 and the lower wall panel 12 more tightly and reliably.

[0068] Preferably, pre-installed reinforcing bars are provided on the floor slab. These reinforcing bars extend into the gap between adjacent upper wall panels 11 and lower wall panels 12 and overlap or connect with the connector 2. Preferably, the pre-installed reinforcing bars are horizontal reinforcing bars. For the X-shaped connector 2, the pre-installed reinforcing bars can overlap or connect with the X-shaped connecting section 27. When the pre-installed reinforcing bars are connected to the X-shaped connecting section 27, some of the pre-installed reinforcing bars can be tied to the X-shaped connector. This structure further improves the structural strength and load-bearing performance at wet joints and effectively enhances the structural integrity and coordinated load-bearing capacity between the floor slab and wall panels, thereby improving the building's service reliability.

[0069] In addition, when a pressure plate is inserted through the lower support rod 261 of the X-type connector 2 and a locking nut is screwed onto the lower support rod 261, the locking nut abuts against the upper surface of the pressure plate. The pressure plate presses the floor slab against the upper surface of the floor slab and locks it in place with the locking nut. This can significantly improve the connection reliability between the floor slab and the upper wall panel 11 and the lower wall panel 12, thereby improving the service reliability and safety of the building.

[0070] In one embodiment, an X-shaped connector 2 is provided at the node between four adjacent wall panels. The two sets of upper legs 25 of the X-shaped connector 2 are vertically inserted into the bottom mounting grooves 111 of the two upper wall panels 11. Specifically, one set of upper legs 25 is inserted into the bottom mounting groove 111 on the right side of the left upper wall panel 11, and the other set is inserted into the bottom mounting groove 111 on the left side of the right upper wall panel 11. Similarly, the two sets of lower legs 26 of the X-shaped connector 2 are vertically inserted into the top mounting grooves 121 of the two lower wall panels 12. Specifically, one set of lower legs 26 is inserted into the top mounting groove 121 on the right side of the left lower wall panel 12, and the other set is inserted into the top mounting groove 121 on the left side of the right lower wall panel 12. Based on this design, the structural integrity and coordinated load-bearing capacity between horizontally adjacent wall panels and between four adjacent vertical wall panels can be effectively improved, thereby enhancing the building's service reliability.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connection structure for upper and lower wall panels, comprising an upper wall panel and a lower wall panel, wherein both the upper wall panel and the lower wall panel are prefabricated wall panels, characterized in that: Multiple bottom mounting slots are provided at the bottom of the upper wall panel, and multiple top mounting slots are provided at the top of the lower wall panel; It also includes multiple connectors, each connector having an adjustable pad with an adjustable height. The lower part of the connector is embedded in a top mounting groove, and the upper part is embedded in a bottom mounting groove. At least a portion of the adjustable pad is in contact with the lower end face of the upper wall panel to support the upper wall panel so that it is vertically aligned with the lower wall panel. The gap between the upper wall panel and the lower wall panel is filled with cast-in-place concrete, and the cast-in-place concrete also fills each of the bottom mounting grooves and each of the top mounting grooves. The connector is an X-type connector, which includes two sets of upper support legs, two sets of lower support legs, and an X-shaped connecting section connecting the two sets of upper support legs and the two sets of lower support legs. The two sets of upper support legs of each X-type connector are vertically inserted into two adjacent bottom mounting slots, and the two sets of lower support legs of each X-type connector are vertically inserted into two adjacent top mounting slots. The adjusting pad is provided on the upper support legs. In addition to penetrating the top surface of the lower wall panel to form a slot, the top mounting groove also penetrates one side surface of the lower wall panel to form a first lateral opening; and / or, in addition to penetrating the bottom surface of the upper wall panel to form a slot, the bottom mounting groove also penetrates one side surface of the upper wall panel to form a second lateral opening.

2. The upper and lower wall panel connection structure according to claim 1, characterized in that: The upper support leg includes multiple upper support rods arranged sequentially along the thickness direction of the wall panel. The bottom end of each upper support rod is connected to the X-shaped connecting section. At least some of the upper support rods are screwed with adjusting nuts. Each upper support rod passes through a corresponding adjusting pad and is supported by the corresponding adjusting nut.

3. The upper and lower wall panel connection structure according to claim 1, characterized in that: The X-shaped connection section includes multiple X-shaped connectors arranged sequentially along the thickness direction of the wall panel. The two top ends of the X-shaped connectors are respectively connected to two sets of upper support legs, and the two bottom ends of the X-shaped connectors are respectively connected to two sets of lower support legs.

4. The upper and lower wall panel connection structure according to claim 1, characterized in that: The connector includes a main support body, the lower part of which is embedded in one of the top mounting slots and the upper part of which is embedded in one of the bottom mounting slots; the adjusting pad is disposed on the main support body, and the height of the adjusting pad on the main support body is adjustable.

5. The upper and lower wall panel connection structure according to claim 1, characterized in that: When the top assembly groove has a first lateral opening, a first plug is provided at the first lateral opening, and the height of the first plug is less than the groove depth of the top assembly groove; when the bottom assembly groove has a second lateral opening, a second plug is provided at the second lateral opening, and the height of the second plug is less than the groove depth of the bottom assembly groove.

6. A prefabricated building, characterized in that: The upper and lower adjacent wall panels are assembled and connected using the upper and lower wall panel connection structure as described in any one of claims 1 to 5.

7. The prefabricated building as described in claim 6, characterized in that: It is a multi-story building, with each floor slab resting on the corresponding lower wall slab. The floor slab is a precast slab with pre-reserved assembly steel bars. The assembly steel bars extend into the gap between the adjacent upper and lower wall slabs and overlap or connect with the connector.

8. The prefabricated building as described in claim 6, characterized in that: An X-shaped connector is provided at the node between the four adjacent wall panels. The two sets of upper legs of the X-shaped connector are vertically inserted into the bottom mounting grooves of the two upper wall panels, and the two sets of lower legs of the X-shaped connector are vertically inserted into the top mounting grooves of the two lower wall panels.

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