A BIM-based connection structure for composite exterior walls and its installation method

Abstract

This invention discloses a BIM-based composite exterior wall connection structure and its installation method, belonging to the field of prefabricated building technology. The invention includes a wall structure comprising a base, on which an inner wall and an outer wall are mounted, with the inner wall positioned between the two outer walls. It also includes a fixing mechanism and a buffer mechanism. The outer walls are mounted on both sides of the inner wall via the fixing mechanism; both the inner and outer walls are connected to the base via the buffer mechanism. Through the buffer mechanism, this invention effectively cushions the inner and outer walls during earthquakes, improving the load-bearing capacity of the base, greatly enhancing durability and ductility, and making the cavity less prone to collapse. The fixing mechanism ensures a tight connection between the inner and outer walls, preventing separation, thus protecting the safety of construction workers and reducing the economic burden on users.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a connection structure for combined exterior walls based on BIM technology and its installation method. Background Technology

[0002] Construction engineering refers to the engineering entity formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. Among them, "buildings" refer to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, living, learning, and public activities.

[0003] BIM, or Building Information Modeling, uses various relevant information and data of a building project as the basis for a model. By using BIM to pre-create a model of the prefabricated steel structure exterior wall connection structure, it facilitates the subsequent installation of the prefabricated steel structure exterior wall connection structure. In existing technologies, when connecting composite exterior walls, the designed exterior wall connection structure typically consists of multiple steel frames and bolts connected together to achieve limiting and fixing of the composite exterior wall. For example, the connection structure between the exterior wall decorative panel and components disclosed in patent document CN211007431U uses a steel frame and bolt fixing connection method.

[0004] However, when using the above connection method to assemble and fix multiple exterior walls, if any thread is not tightened, the entire steel frame structure is prone to disintegration, leading to the separation and collapse of the combined walls. Furthermore, this connection method has poor seismic resistance; during vibrations, multiple walls are easily subjected to collisions, causing damage to the combined walls and potentially leading to collapse. This can result in injuries to construction workers and significant economic losses.

[0005] Therefore, in order to solve the above problems, a new type of connection structure for composite exterior walls based on BIM technology is urgently needed. Summary of the Invention

[0006] 1. The problem to be solved

[0007] The purpose of this invention is to solve the problems of relatively poor structural connection stability and poor overall seismic resistance of existing composite exterior walls during assembly and construction. This invention provides a connection structure for composite exterior walls based on BIM technology and its installation method. The connection structure for composite exterior walls is simple in design, stable in installation and convenient to use, and has the advantages of good fixing effect and good buffering effect, effectively solving the above problems.

[0008] 2. Technical Solution

[0009] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0010] This invention discloses a BIM-based composite exterior wall connection structure, comprising a wall structure. The wall structure includes a base, on which an inner wall and an outer wall are mounted, with the inner wall positioned between the two outer walls. It also includes a fixing mechanism and a buffer mechanism. The outer walls are mounted on both sides of the inner wall via the fixing mechanism; both the inner and outer walls are connected to the base via the buffer mechanism.

[0011] The fixing mechanism includes a housing, and the housing is movably installed at the four corners of the two vertical surfaces of the inner wall. Each housing is slidably installed with a locking block. The outer wall is provided with a groove on the side closest to the inner wall. The groove matches the housing, and the inner cavity of the groove is provided with a slot for engaging and fixing with the locking block.

[0012] The buffer mechanism includes a placement plate located in the inner cavity of the base. The top of the placement plate is fixedly connected to the inner wall and the outer wall. The two sides of the placement plate are connected to the base through buffer components. A damper is provided in the middle of the placement plate. The damper is fixedly installed on the base, and its output end is fixedly connected to the placement plate.

[0013] As a further improvement of the present invention, through grooves are machined at the four corners of the inner wall, and a dual-axis motor is fixedly connected to one side of the inner cavity of the through groove. The two output shafts of the dual-axis motor are connected to a threaded rod and a threaded tube. The threaded tube is slidably installed in the housing, and a connector one is fixedly connected to the surface of the threaded tube. A connecting block is rotatably connected to the inner cavity of the connector one, and a connector two is rotatably connected to one side of the connecting block. One side of the connector two is fixedly connected to a locking block.

[0014] As a further improvement of the present invention, long rods are symmetrically fixedly connected to both sides of the inner cavity of the housing, and a protrusion is slidably connected to the surface of the long rod, which is fixedly connected to the threaded tube; a circular block is fixedly connected to one end of the long rod, and the cross-sectional area of ​​the circular block is larger than the cross-sectional area of ​​the long rod.

[0015] As a further improvement of the present invention, the connection between the inner wall and the outer wall is provided with a frame-type protrusion and a groove that engages and fixes with the protrusion; a thermal insulation cotton is embedded in one side of the outer wall, and the thermal insulation cotton is rectangular in shape.

[0016] As a further improvement of the present invention, the buffer includes guide grooves symmetrically opened on both sides of the bottom of the placement plate, a guide rod 1 is provided in the inner cavity of the guide groove, movable blocks are symmetrically arranged on both sides of the inner cavity of the base, a guide rod 2 is slidably connected to the inner cavity of the movable block, both ends of the guide rod 2 penetrate to the outside of the movable block and are fixedly connected to the adjustment block, one side of the adjustment block is rotatably connected to the base, and both ends of the guide rod 1 are fixedly connected to the adjustment block.

[0017] As a further improvement of the present invention, T-shaped grooves are provided on both sides of the inner cavity of the base, and a T-shaped block is slidably connected to the inner cavity of the T-shaped groove, and one side of the T-shaped block is fixedly connected to the movable block.

[0018] As a further improvement of the present invention, a spring is sleeved on the surface of the damper, and the two ends of the spring are fixedly connected to the base and the placement plate respectively; anti-collision blocks are fixedly connected to both sides of the placement plate, and a rubber pad is fixedly connected to the top of the anti-collision block.

[0019] As a further improvement of the present invention, mounting seats are fixedly connected to both sides of the base, and the base is fixedly connected to the ground through the mounting seats.

[0020] As a further improvement of the present invention, positioning blocks are fixedly connected at the four corners of the side where the inner wall and the outer wall connect, and the outer wall is provided with a positioning groove that matches the positioning block.

[0021] The present invention discloses an installation method for a combined external wall connection structure based on BIM technology, comprising the following steps:

[0022] Step 1: Create a 3D model of the building project based on BIM technology. Design the building's design, construction, and operation plans using the 3D model, and use this as a basis to design the connecting structural components for the combined exterior walls and guide the factory to process them.

[0023] Step 2: Assemble the interior and exterior walls;

[0024] Step 3: Assemble the buffer structure at the bottom of the placement plate and fix it to the base;

[0025] Step 4: After the placement board is assembled, cover the top of the placement board with cement, place the assembled interior and exterior walls on the placement board, and let them air dry and fix.

[0026] 3. Beneficial effects

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) The present invention provides a BIM-based connection structure for combined exterior walls. By setting a fixed structure, a stable connection between the inner wall and the outer wall is achieved. At the same time, by setting a buffer structure, when the wall is subjected to external vibration during actual use, the inner wall and the outer wall can be effectively buffered. Moreover, the connection structure of the present invention has a simple structural design, low manufacturing cost, and convenient construction.

[0029] (2) A BIM-based connection structure for combined exterior walls of the present invention includes eight housings located at the four corners of the inner wall. On one hand, the housings are inserted into grooves in the outer wall to achieve connection; on the other hand, each housing has locking blocks at its upper and lower ends. These locking blocks engage with corresponding slots in the outer wall, further improving the assembly's stability. More optimally, by optimizing the installation method of the locking blocks within the housings, a dual-axis motor is installed within the inner wall to simultaneously drive two housings at each corner of the inner wall to move synchronously. The housings drive the locking blocks to simultaneously engage with the outer wall on both sides of the inner wall, completing the connection. This simple operation, compared to traditional bolt connections, greatly reduces manpower, lowers worker workload, saves assembly time, and significantly reduces construction costs.

[0030] (3) A BIM-based connection structure for combined exterior walls of the present invention, in order to further improve the installation firmness and sealing of the inner and outer walls, provides two frame-structured protrusions on the four sides of the inner wall, and correspondingly provides two grooves on the four sides of the outer wall that engage with and fix the protrusions. Alternatively, two frame-structured grooves are provided on the four sides of the inner wall, and correspondingly, protrusions are provided on the four sides of the outer wall that engage with the grooves. This increases the contact area between the inner and outer walls and improves the connection sealing of the inner and outer walls. More optimally, thermal insulation cotton is also embedded on the side of the outer wall that connects to the inner wall.

[0031] (4) A BIM-based connection structure for combined exterior walls of the present invention includes a buffer structure comprising a damper mounted on a base. The output end of the damper is connected to a placement plate. When the inner and outer walls are subjected to external force vibration, the damper can improve the load-bearing capacity of the base, greatly improving durability and ductility, making the cavity less prone to collapse. In addition, to further improve the buffering effect, a spring is fitted on the surface of the damper.

[0032] (5) The present invention provides an installation method for a connection structure for a combined exterior wall based on BIM technology. By using BIM technology, the connection structure can be visualized and modeled, which is convenient for subsequent factory processing and assembly. The connection structure of the present invention can make the connection between the inner wall and the outer wall tighter and less prone to separation, thus ensuring the personal safety of construction personnel. At the same time, the method of the present invention also solves the operational risks of traditional construction personnel using bolts and steel frames to limit and fix the combined exterior wall, and overcomes the problem of poor seismic performance that is common in existing combined exterior walls. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the inner wall, outer wall, and base after installation in this invention;

[0034] Figure 2This is a schematic diagram of the base structure in this invention;

[0035] Figure 3 This is a schematic diagram of the installation structure of the adjusting block and the movable block in this invention;

[0036] Figure 4 This is a schematic diagram of the structure of the inner wall in this invention;

[0037] Figure 5 This is a schematic diagram of the fixing mechanism in this invention;

[0038] Figure 6 This is a schematic diagram of the internal structure of the shell in this invention;

[0039] Figure 7 This is a schematic diagram of the structure of the exterior wall in this invention;

[0040] Figure 8 for Figure 7 Enlarged view of a portion of point A in the middle;

[0041] Figure 9 This is a schematic diagram of the structure after the placement plate is installed with the inner and outer walls in this invention;

[0042] In the picture:

[0043] 1. Base; 2. Inner wall; 3. Outer wall; 4. Placement plate; 5. Guide groove; 6. Guide rod one; 7. Movable block; 8. Guide rod two; 9. Adjusting block; 10. Damper; 11. Spring; 12. Through groove; 13. Dual-axis motor; 14. Threaded rod; 15. Housing; 16. Locking block; 17. Threaded pipe; 18. Connector one; 19. Connecting block; 20. Connector two; 21. Groove one; 22. Locking groove; 23. Long rod; 24. Protrusion one; 25. Round block; 26. Insulation cotton; 27. Protrusion two; 28. Groove two; 29. ​​T-slot; 30. T-block; 31. Anti-collision block; 32. Groove three; 33. Mounting base; 34. Positioning block; 35. Positioning groove. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0045] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0048] Example 1

[0049] like Figure 1 As shown in this embodiment, a BIM-based composite exterior wall connection structure includes a wall structure. The wall structure includes a base 1, on which an inner wall 2 and an outer wall 3 are mounted. The inner wall 2 is positioned between the two outer walls 3. The two mounting sides of the inner wall 2, namely the front and rear sides, are respectively fitted with the outer walls 3 via fixing mechanisms. These fixing mechanisms connect the inner wall 2 and the outer walls 3, making the connection tighter and less prone to separation. This ensures the safety of construction workers and reduces the economic burden on users. The fixing and buffer mechanisms are described in detail below:

[0050] Fixed mechanism:

[0051] Specifically, such as Figure 4 and Figure 5 As shown, the fixing mechanism includes a housing 15. Housings 15 are movably installed at the four corners of the two vertical surfaces connecting the inner wall 2 and the outer wall. Each housing 15 has symmetrically arranged locking blocks 16 at its top and bottom, and the locking blocks 16 can be slidably installed within the housing 15. Figure 8As shown, the outer wall 3 is provided with a groove 21 on the side near the inner wall 2. The groove 21 matches the shell 15, and the inner cavity of the groove 21 is provided with a slot 22 for engaging and fixing with the locking block 16. When assembling the inner wall 2 and the outer wall 3, the shell 15 is inserted into the groove 21, and the sliding locking block 16 is engaged in the slot 22, so that the inner wall 2 and the outer wall 3 can be engaged and fixed.

[0052] As a further optimization of this embodiment, such as Figure 5 and Figure 6 As shown, through grooves 12 are machined at the four corners of the inner wall 2. A dual-axis motor 13 is fixedly connected to one side of the inner cavity of the through groove 12. The two output shafts of the dual-axis motor 13 are respectively fixedly connected to a threaded rod 14. The other end of the threaded rod 14 passes through the inner cavity of the housing 15 and is respectively installed and connected to a threaded tube 17 located in the inner cavity of the housing 15. The threaded tube 17 is slidably installed in the housing 15. A connector 18 is fixedly connected to the surface of the threaded tube 17. A connecting block 19 is rotatably connected to the inner cavity of the connector 18. A connector 20 is rotatably connected to one side of the connecting block 19. One side of the connector 20 is fixedly connected to a locking block 16. When the threaded tube 17 moves horizontally, it causes the connector 18 to move closer to or away from the connector 20. At this time, both ends of the connecting block 19 rotate, pushing the locking block 16 to move up or down.

[0053] To ensure that the locking blocks 16 at the top and bottom of the housing 15 move synchronously, the same connecting parts 18, 19 and 20 are provided on both the upper and lower sides of the threaded tube 17. When the free end of the threaded tube 17 moves away from the threaded rod 14, the connecting parts 18 at the top and bottom of the threaded rod 17 move closer to the connecting parts 20 at the same time. The connecting blocks 19 on both sides rotate relative to each other, and the locking blocks 16 at the top and bottom of the housing 15 extend outward at the same time and are locked into the slots 22 to complete the installation and fixing of the inner and outer walls.

[0054] More optimized, with Figure 6 Taking the orientation as an example, the threaded tube 17 in this embodiment can also be designed with the following structure: a set of connector 18, connector 19, and connector 20 are provided at both the front and rear ends of the threaded tube 17. That is, two sets of connector 18, connector 19, and connector 20 with the same structure are provided at the top or bottom of the threaded tube 17. This design can improve the stability of the movement of the locking block 16, and during assembly, it can be stably locked into the locking groove 22 without easily getting stuck.

[0055] Meanwhile, in this embodiment, to facilitate the sliding of the threaded tube 17, Figure 6Taking the center position as an example, two long rods 23 are fixedly connected to the left and right sides of the threaded tube 17, respectively. A protrusion 24 is slidably connected to the surface of each long rod 23. One side of the protrusion 24 is fixedly connected to the threaded tube 17. The cooperation between the long rods 23 and the protrusion 24 serves to limit the movement of the threaded tube 17, improving its stability during movement. Furthermore, more optimally, a circular block 25 is fixedly connected to one end of each long rod 23. The cross-sectional area of ​​the circular block 25 is larger than that of the long rod 23. The circular block 25 acts as a barrier to the protrusion 24, preventing it from detaching from the surface of the long rod 23. This allows the threaded tube 17 to move stably horizontally without relative rotation, and the locking block 16 is stably inserted into the slot 22 for fixation.

[0056] Buffer mechanism:

[0057] like Figure 2 As shown, the buffer mechanism includes a placement plate 4 disposed in the inner cavity of the base 1. The top of the placement plate 4 is fixedly connected to the inner wall 2 and the outer wall 3. The two sides of the placement plate 4 are installed and connected to the base 1 through buffer components. A damper 10 is provided in the middle of the placement plate 4. The damper 10 is fixedly installed on the base 1, and its output end is fixedly connected to the placement plate 4.

[0058] like Figure 9 As shown, the bottom of the placement plate 4 is machined with a groove 32, which is circular in shape. The output end of the damper 10 is fixedly connected to the groove 32. Figure 2 and Figure 3 As shown, the buffer includes guide grooves 5 symmetrically formed on both sides of the bottom of the placement plate 4. A guide rod 6 is installed inside the cavity of each guide groove 5. Movable blocks 7 are symmetrically arranged on both sides of the cavity of the base 1. A guide rod 8 is slidably connected to the cavity of each movable block 7. Both ends of the guide rod 8 extend to the outside of the movable block 7 and are fixedly connected to an adjusting block 9. One side of the adjusting block 9 is rotatably connected to the base 1, and both ends of the guide rod 6 are fixedly connected to the adjusting block 9. More optimally, a spring 11 is fitted onto the surface of the damper 10. Both ends of the spring 11 are fixedly connected to the base 1 and the placement plate 4 respectively, to improve the buffering and shock absorption effect.

[0059] Furthermore, such as Figure 2As shown, T-shaped grooves 29 are provided on both sides of the inner cavity of the base 1. T-shaped blocks 30 are slidably connected to the inner cavity of the T-shaped grooves 29. One side of the T-shaped block 30 is fixedly connected to the movable block 7. Through the cooperation of the T-shaped grooves 29 and the T-shaped blocks 30, the movable block 7 is guided, making it less likely for the movable block 7 to shift its position when moving. The combined exterior wall connection structure of the present invention, through the setting of the damper 10, spring 11 and buffer, can significantly improve the bearing capacity of the base when the inner and outer walls are subjected to external force vibration, greatly improving the durability and ductility of the combined exterior wall, making the cavity less prone to collapse.

[0060] When using the connection structure of this invention to connect composite exterior walls, compared to the existing method of using multiple steel frames and bolts to limit and fix the composite exterior walls, the existing technology is prone to steel frame disintegration if the threaded bolts are not tightened during fixing, leading to the separation and collapse of the composite walls. Furthermore, existing composite exterior wall connection structures are prone to collisions between multiple walls during vibrations, which can easily damage the composite walls and cause them to collapse, thus endangering the personal safety of construction workers. The connection structure of this invention effectively solves the above problems.

[0061] Example 2

[0062] This embodiment presents a BIM-based connection structure for combined exterior walls, whose main structure is basically the same as that of Embodiment 1, with the main difference being: Figure 4 As shown, the connection between the inner wall 2 and the outer wall 3 is also provided with a frame-type protrusion 27 and a groove 28 that engages and is fixed with the protrusion 27. Specifically, according to actual needs, protrusion 27 can be fixedly connected on both mounting surfaces of the inner wall 2 and around the inner wall 2, and a groove 28 that matches the protrusion 27 can be opened on one side of the outer wall 3. Alternatively, groove 28 can be fixedly machined on both mounting surfaces of the inner wall 2 and around the inner wall 2, and protrusion 27 can be machined on the outer wall 3. Through the cooperation of protrusion 27 and groove 28, the contact area between the inner wall 2 and the outer wall 3 is increased, thereby improving the sealing between the inner wall 2 and the outer wall 3.

[0063] like Figure 7 As shown, thermal insulation cotton 26 is embedded in one side of the outer wall 3. In this embodiment, the thermal insulation cotton 26 is rectangular in shape. Its actual shape can be set according to actual needs, as long as it can achieve a good thermal insulation effect. In this embodiment, the setting of thermal insulation cotton 26 plays a role in insulating the interior of the house, making the interior of the house warmer.

[0064] Furthermore, to further improve the installation stability of the inner wall 2 and the outer wall 3, this embodiment can also provide the following structure: positioning blocks 34 are fixedly installed at the four corners on both sides of the inner wall 2, and positioning grooves 35 adapted to the positioning blocks 34 are opened at the four corners on one side of the outer wall 3; or, positioning grooves 35 are opened at the four corners on both sides of the inner wall 2, and positioning blocks 34 that cooperate with and connect to the positioning grooves 35 are fixedly installed on the outer wall 3. Through the cooperative use of positioning blocks 34 and positioning grooves 35, the inner wall 2 and the outer wall 3 are positioned, making it difficult for the inner wall 2 and the outer wall 3 to separate.

[0065] Example 3

[0066] This embodiment provides a BIM-based connection structure for combined exterior walls. Its main structure is basically the same as that of Embodiment 1. The main difference is that mounting seats 33 are fixedly connected to both sides of the base 1. The base 1 is fixedly connected to the ground through the mounting seats 33. The mounting seats 33 serve to fix the base 1, making it more stable after installation.

[0067] In another embodiment of this invention, anti-collision blocks 31 are fixedly connected to both sides of the placement plate 4, and rubber pads are fixedly connected to the top of the anti-collision blocks 31. Through the combined use of the anti-collision blocks 31 and the rubber pads, the impact force between the anti-collision blocks 31 and the base 1 is reduced, thereby making the base 1 less prone to damage.

[0068] The present invention also provides an installation method for the above-mentioned connection structure, comprising the following steps:

[0069] Step 1: Create a 3D model of the building project based on BIM technology. Design the building's design, construction, and operation plans using the 3D model, and use this as a basis to design the connecting structural components for the combined exterior walls and guide the factory to process them.

[0070] Step 2: Assemble the inner wall 2 and the outer wall 3;

[0071] Specifically, the construction workers first tightly fit the inner wall 2 and the outer wall 3 together, so that the second protrusion 27 enters the inner cavity of the second groove 28, the positioning block 34 enters the inner cavity of the positioning groove 35, and the housing 15 enters the inner cavity of the first groove 21, thereby initially fixing the positions of the inner wall 2 and the outer wall 3; then, by starting the dual-axis motor 13, the output shaft of the dual-axis motor 13 drives the threaded rod 14 to rotate. When the threaded rod 14 rotates, it drives the threaded tube 17 to move into the inner cavity of the housing 15. 7. When moving, the protrusion 24 slides on the surface of the long rod 23. When the housing 15 moves, the connector 18 moves. The connector 18 moves one side of the connecting block 19, and at the same time, one side of the connecting block 19 makes an arc-shaped movement in the inner cavity of the connector 18. The other side of the connecting block 19 moves the connector 20. The connector 20 moves the locking block 16, which in turn makes the locking block 16 enter the inner cavity of the slot 22, thereby connecting and fixing the inner wall 2 and the outer wall 3.

[0072] Step 3: Assemble the buffer structure at the bottom of the placement plate 4 and fix it to the base 1;

[0073] Step 4: After the placement board 4 is assembled, cover the top of the placement board 4 with cement, place the assembled inner wall 2 and outer wall 3 on the placement board 4, and let them air dry and fix them.

[0074] When the inner wall 2 and the outer wall 3 vibrate vertically, they will cause the placement plate 4 to move downwards. The placement plate 4 will cause the damper 10 and the spring 11 to compress. At the same time, the placement plate 4 will cause the adjusting block 9 to move in an arc shape through the guide rod 1 6. The adjusting block 9 will cause the guide rod 1 6 to slide in the inner cavity of the guide groove 5. The adjusting block 9 will cause the guide rod 2 8 to slide in the inner cavity of the movable block 7. The guide rod 2 8 will cause the movable block 7 to move upwards. The movable block 7 will cause the T-shaped block 30 to move in the inner cavity of the T-shaped groove 29, thereby achieving the purpose of buffering the inner wall 2 and the outer wall 3.

[0075] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A BIM-based composite exterior wall connection structure, comprising a wall structure, the wall structure including a base (1), an inner wall (2) and an outer wall (3) mounted on the base (1), characterized in that, It also includes a fixing mechanism and a buffer mechanism. Both sides of the inner wall (2) are fitted with outer walls (3) via fixing mechanisms. Both the inner wall (2) and the outer wall (3) are connected to the base (1) via buffer mechanisms. The fixing mechanism includes a housing (15), and a housing (15) is movably installed at the four corners of the two vertical surfaces of the inner wall (2). A locking block (16) is slidably installed on each housing (15). A groove (21) is provided on the side of the outer wall (3) near the inner wall (2). The groove (21) matches the housing (15), and the inner cavity of the groove (21) is provided with a slot (22) for engaging and fixing with the locking block (16). The buffer mechanism includes a placement plate (4) located in the inner cavity of the base (1). The top of the placement plate (4) is fixedly connected to the inner wall (2) and the outer wall (3). The two sides of the placement plate (4) are connected to the base (1) through buffer components. A damper (10) is provided in the middle of the placement plate (4). The damper (10) is fixedly installed on the base (1), and its output end is fixedly connected to the placement plate (4).

2. The connection structure for combined exterior walls based on BIM technology according to claim 1, characterized in that: The inner wall (2) has through grooves (12) at its four corners. A dual-axis motor (13) is fixedly connected to one side of the inner cavity of the through groove (12). The two output shafts of the dual-axis motor (13) are connected to the threaded rod (14) and the threaded tube (17) through the threaded rod (14). The threaded tube (17) is slidably installed in the housing (15). A connector one (18) is fixedly connected to the surface of the threaded tube (17). A connecting block (19) is rotatably connected to the inner cavity of the connector one (18). A connector two (20) is rotatably connected to one side of the connecting block (19). One side of the connector two (20) is fixedly connected to the locking block (16).

3. A connection structure for combined exterior walls based on BIM technology according to claim 2, characterized in that: The inner cavity of the housing (15) is symmetrically fixedly connected to two sides of a long rod (23). A protrusion (24) is slidably connected to the surface of the long rod (23), and the protrusion (24) is fixedly connected to the threaded tube (17). A round block (25) is fixedly connected to one end of the long rod (23), and the cross-sectional area of ​​the round block (25) is larger than that of the long rod (23).

4. A connection structure for combined exterior walls based on BIM technology according to any one of claims 1-3, characterized in that: The connection between the inner wall (2) and the outer wall (3) is provided with a frame-type protrusion (27) and a groove (28) that engages and fixes with the protrusion (27); thermal insulation cotton (26) is embedded on one side of the outer wall (3).

5. A connection structure for combined exterior walls based on BIM technology according to any one of claims 1-3, characterized in that: The buffer includes guide grooves (5) symmetrically opened on both sides of the bottom of the placement plate (4). A guide rod (6) is provided in the inner cavity of the guide groove (5). Movable blocks (7) are symmetrically arranged on both sides of the inner cavity of the base (1). A guide rod (8) is slidably connected to the inner cavity of the movable block (7). Both ends of the guide rod (8) extend to the outside of the movable block (7) and are fixedly connected to an adjusting block (9). One side of the adjusting block (9) is rotatably connected to the base (1). Both ends of the guide rod (6) are fixedly connected to the adjusting block (9).

6. A connection structure for combined exterior walls based on BIM technology according to claim 5, characterized in that: The base (1) has T-shaped grooves (29) on both sides of its inner cavity. A T-shaped block (30) is slidably connected to the inner cavity of the T-shaped groove (29). One side of the T-shaped block (30) is fixedly connected to the movable block (7).

7. A connection structure for combined exterior walls based on BIM technology according to any one of claims 1-3, characterized in that: The surface of the damper (10) is fitted with a spring (11), and the two ends of the spring (11) are fixedly connected to the base (1) and the placement plate (4) respectively; both sides of the placement plate (4) are fixedly connected with anti-collision blocks (31), and the top of the anti-collision blocks (31) is fixedly connected with a rubber pad.

8. A connection structure for combined exterior walls based on BIM technology according to any one of claims 1-3, characterized in that: The base (1) is fixedly connected to mounting bases (33) on both sides, and the base (1) is fixedly connected to the ground through the mounting bases (33).

9. A connection structure for combined exterior walls based on BIM technology according to any one of claims 1-3, characterized in that: Positioning blocks (34) are fixedly connected at the four corners of the side where the inner wall (2) connects to the outer wall (3), and the outer wall (3) is provided with a positioning groove (35) that matches the positioning block (34).

10. An installation method for a combined exterior wall connection structure based on BIM technology according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Create a 3D model of the building project based on BIM technology. Design the building's design, construction, and operation plans using the 3D model, and use this as a basis to design the connecting structural components for the combined exterior walls and guide the factory to process them. Step 2: Assemble the interior wall (2) and the exterior wall (3); Step 3: Assemble the buffer structure at the bottom of the placement plate (4) and complete the fixed connection with the base (1); Step 4: After the placement board (4) is assembled, cement is spread on the top of the placement board (4), and the assembled inner wall (2) and outer wall (3) are placed on the placement board (4) and allowed to air dry and be fixed.

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