Wall structure with shape memory alloy connecting device and construction method thereof

Abstract

The invention relates to a wall structure with a shape memory alloy connecting device and a construction method of the wall structure, and relates to the technical field of building structures. Each wall body unit comprises a heat preservation plate and two leaf plates, the heat preservation plate is arranged between the two leaf plates, and each leaf plate is connected with the heat preservation plate through a connecting assembly; the connecting assembly comprises a connecting block, a plurality of fixing rods and a shape memory connecting rod, the connecting block and the leaf plate are fixedly connected through the fixing rods, and the connecting block is fixed to the heat preservation plate through the shape memory connecting rod. The sandwich wall has the effect of reducing deformation or displacement between the sandwich walls.

Description

Technical Field

[0001] This application relates to the technical field of building structures, and in particular to a wall structure with a shape memory alloy connection device and its construction method. Background Technique

[0002] Earthquakes may cause damage and collapse of buildings, resulting in casualties and property losses, bringing huge economic losses to society. Traditional seismic design focuses on protecting lives and adopts ductility design methods. Although life safety is ensured, the structure may experience large plastic damage and residual deformation, making it time-consuming and laborious for the building structure to restore its functions, and seriously affecting normal production and life. Seismic recoverable function structures do not require or only require minor repairs to resume use, and can reduce the impact caused by the interruption of building structure functions, such as through replaceable self-centering braces and other means.

[0003] Under the related technology, in traditional seismic design, usually the protection of life is emphasized, and the ductility design method is widely adopted. This method consumes seismic energy by allowing the structure to produce a certain amount of plastic deformation under earthquake action to ensure life safety. At the same time, for special building structures such as prefabricated sandwich wall structures, they are generally composed of two layers of precast wall panels sandwiching an intermediate heat insulation layer, and then connection devices made of non-metallic materials are used to connect the inner and outer leaf panels to achieve good heat insulation performance and structural strength. These are all common means in dealing with earthquakes and meeting the functional requirements of buildings.

[0004] In view of the above related technology, although the traditional ductility design method ensures life safety, the structure may experience large plastic damage and residual deformation. This makes it time-consuming and laborious for the building structure to restore its functions, and seriously affects normal production and life. In addition, the connection devices in prefabricated sandwich wall structures are prone to damage or displacement under the actions of earthquakes, temperature, explosion, impact, construction and installation, etc., thus threatening the stability of the structure. Summary of the Invention

[0005] In order to reduce the deformation or displacement between sandwich walls when an external force is applied to the wall, this application provides a wall structure with a shape memory alloy connection device and its construction method.

[0006] In a first aspect, a wall structure with a shape memory alloy connection device provided by this application adopts the following technical solution: A wall structure with a shape memory alloy connection device includes a wall unit and a connection component; The wall unit includes a thermal insulation board and two leaf panels, the thermal insulation board is arranged between the two leaf panels, and each leaf panel and the thermal insulation board are connected by the connection component; The connecting component includes a connecting block, a plurality of fixing rods and a shape memory connecting rod. The connecting block and the blade are fixedly connected by the fixing rods, and the connecting block is fixed to the heat preservation plate by the shape memory connecting rod.

[0007] By adopting the above technical solution, by setting the connecting component, the blade is connected to the heat preservation plate by the connecting component. The heat preservation plate and the blade are fixed by the shape memory connecting rod. After the shape memory connecting rod is deformed under pressure or temperature change, it can return to its initial shape. While improving the connection stability between the blade and the heat preservation plate by the shape memory connecting rod, the resistance and seismic performance of the blade under external loads and natural disasters are improved. Optionally, one end of the shape memory connecting rod is connected to one of the connecting blocks, and the other end passes through the heat preservation plate and is connected to the other connecting block.

[0008] By adopting the above technical solution, one end of the shape memory connecting rod is connected to one connecting block, and the other end passes through the heat preservation plate and is connected to the other connecting block. Further, the connection stability between the blade and the heat preservation plate is improved by one shape memory connecting rod, and the material loss is reduced.

[0009] Optionally, the shape memory connecting rod is threadedly connected to the connecting block.

[0010] By adopting the above technical solution, by the threaded connection between the shape memory connecting rod and the connecting block, the connection method is simple, which is convenient for installation and disassembly, and at the same time improves the stability.

[0011] Optionally, a first embedding groove for accommodating the connecting block is provided on the blade, a second embedding groove is provided on one side of the heat preservation plate close to the blade, the first embedding groove and the second embedding groove communicate with each other, one side of the connecting block is located in the first embedding groove, and the other side is located in the second embedding groove.

[0012] By adopting the above technical solution, in order to further position the connecting block, one side of the first connecting block is located in the first embedding groove, and the other side is located in the second embedding groove. The connecting block is positioned by the first embedding groove and the second embedding groove.

[0013] Optionally, a limiting component is further included. The limiting component includes a wedge block. A first mounting hole is provided on the connecting block. The shape memory connecting rod is threadedly connected to the first mounting hole. A wedge block is connected in the first mounting hole. The wedge block is hinged to the hole wall of the first mounting hole. The hinge axis of the wedge block along the connecting block is parallel to the rod length direction of the shape memory connecting rod. Wedge grooves for accommodating the wedge block are provided at both ends of the shape memory connecting rod. When the shape memory connecting rod is tightened in the first mounting hole, the wedge block is located in the wedge groove.

[0014] By adopting the above technical solution, by providing a limit component, when the shape memory connecting rod is screwed into the first mounting hole, the wedge groove at the end of the shape memory connecting rod contacts the inclined surface of the wedge block, generating a self-locking effect. When an external force is applied, the friction between the wedge block and the wedge groove increases, thereby reducing the loosening caused by the reverse rotation of the shape memory connecting rod.

[0015] Optionally, a first rotating shaft is fixedly connected to the inner wall of the first mounting hole. The first rotating shaft is parallel to the length direction of the shape memory connecting rod, and the side of the wedge block away from the shape memory connecting rod is rotatably connected to the first rotating shaft.

[0016] By adopting the above technical solution, by providing the first rotating shaft, the rotation of the wedge block along the first rotating shaft is realized.

[0017] Optionally, it further includes an auxiliary connection component. The auxiliary connection component further includes an auxiliary rod and a rubber pad. The auxiliary rod is parallel to the shape memory connecting rod. Second mounting holes are provided on the sides of the two connection blocks close to each other. A rubber pad is fixedly connected to the inner wall of the second mounting hole. The auxiliary rod is inserted into the inner wall of the second mounting hole, and the end of the auxiliary rod abuts against the rubber pad.

[0018] By adopting the above technical solution, by providing the auxiliary rod and the rubber pad, the connection stability between the blade and the heat preservation board is further improved. Rubber pads are provided at both ends of the auxiliary rod. When an external force acts on the blade, the rubber pads buffer the applied external force, reducing the occurrence of compression deformation of the blade and the heat preservation board.

[0019] Optionally, the auxiliary connection component further includes a counterweight block and a first elastic member. A counterweight block is slidably connected to the auxiliary rod. A first accommodation cavity for accommodating the auxiliary rod is provided on the heat preservation board. The auxiliary rod slides in the first accommodation cavity. The counterweight block is directly or indirectly connected to the auxiliary rod. The counterweight block slides along the length direction of the auxiliary rod in the first accommodation cavity. A first elastic member is fixedly connected to each of the two side walls of the first accommodation cavity. The counterweight block is located between the two first elastic members.

[0020] By adopting the above technical solution, in order to further reduce the deformation or displacement of the blade caused by an external force, by providing the counterweight block and the first elastic member, when an external force is applied to a blade, it may cause the connection block connected to the blade to displace, further driving the connecting rod to displace, driving the counterweight block towards the side close to the other connection block. By providing the first elastic member, when the external force decreases, under the action of the first elastic member, the counterweight block has a force to move towards the initial position, thereby further ensuring that the connection block is driven towards the initial position to balance the internal force generated by the deformation of the connection block due to the external force and offset part of the fatigue loss of the shape memory connecting rod.

[0021] Optionally, a universal hinge of a first ball is provided on the bottom wall of the counterweight, and the first ball contacts the bottom wall of the first accommodation cavity.

[0022] By adopting the above technical solution, by providing the first ball on the bottom wall of the counterweight, the frictional resistance of the counterweight sliding on the bottom wall of the first accommodation cavity is reduced.

[0023] In a second aspect, the present application also provides a construction method for a wall structure with a shape memory alloy connection device, which is characterized in that it includes the following steps: S1: Measurement and marking: According to the design requirements, use measuring tools to mark the dimensions of the connection blocks on the insulation board. S2: Grooving: According to the dimensions of the connection blocks, a first embedding groove is opened on the blade, a second embedding groove is opened on the insulation board, and the connection blocks are placed in the first embedding groove and the second embedding groove. S3: Installing the connection blocks: Fix the blade through the fixing rod connection block, thread one end of the shape memory connecting rod to one connection block, and thread the other end through the insulation board and then thread it to the other connection block to fix the blade and the insulation board. S4: Installing the auxiliary connection assembly: Open a first accommodation cavity in the insulation board, thread one end of the auxiliary rod to one connection block, thread the other end through the first accommodation cavity and then thread it to the other connection block, and install the counterweight on the auxiliary rod.

[0024] By adopting the above technical solution, the blade and the insulation board are connected by the connection assembly, and the insulation board and the blade are fixed by the shape memory connecting rod, which improves the connection stability between the blade and the insulation board, and at the same time improves the resistance and seismic performance of the blade when subjected to external loads and natural disasters. When an external force is applied to a blade, it may cause the connection block connected to the blade to displace, further driving the connecting rod to displace, driving the counterweight towards the side close to the other connection block. By providing the first elastic member, when the external force decreases, under the action of the first elastic member, the counterweight has a force to move towards the initial position, thereby further ensuring that the connection block is driven to move towards the initial position to balance the internal force generated by the deformation of the connection block due to the external force.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing the connection assembly in the present application, the blade and the insulation board are connected by the connection assembly, and the insulation board and the blade are fixed by the shape memory connecting rod, which improves the connection stability between the blade and the insulation board, and at the same time improves the resistance and seismic performance of the blade when subjected to external loads and natural disasters. 2. The present application ensures the firmness of the connection between the shape memory connecting rod and the connecting block by providing a limiting component; 3. The present application provides an auxiliary connection component. When an external force is applied to one vane, it may cause the connecting block connected to the vane to displace, further driving the connecting rod to displace, and driving the counterweight block towards the side close to the other connecting block. By providing a first elastic member, when the external force decreases, under the action of the first elastic member, the counterweight block has a force to move towards the initial position, thereby further ensuring that the connecting block is driven to move towards the initial position to balance the internal force generated by the deformation of the connecting block due to the external force. Description of the Drawings

[0026] Figure 1 is a schematic structural view of the wall unit of the present application; Figure 2 is a schematic structural view of the connection component of the present application; Figure 3 is a schematic structural view of the first part of the auxiliary connection component of the present application; Figure 4 is a schematic structural view of the second part of the auxiliary connection component of the present application; Figure 5 is a schematic structural view of the third part of the auxiliary connection component of the present application; Figure 6 is a schematic structural view of the counterweight block of the present application.

[0027] Description of the Reference Numerals: 1, wall unit; 11, insulation board; 111, second groove; 112, first accommodation cavity; 12, vane; 121, first groove; 2, connection component; 21, connecting block; 211, first mounting hole; 212, second mounting hole; 22, fixing rod; 221, first support rod; 222, second support rod; 23, shape memory connecting rod; 231, wedge-shaped groove; 3, limiting component; 31, wedge-shaped block; 32, first rotating shaft; 4, auxiliary connection component; 41, auxiliary rod; 42, rubber pad; 43, counterweight block; 431, sleeve; 432, first ball; 44, first elastic member; 45, telescopic rod. Detailed Embodiment

[0028] The following further Figure 1-6 describes the present application in detail.

[0029] The embodiment of the present application discloses a wall structure with a shape memory alloy connection device. For the convenience of description, the present application introduces orientation terms such as the first direction, the second direction, and the third direction to form a three-dimensional reference direction. The orientation terms such as "the first direction, the second direction, and the third direction" can specifically refer to the figure shown, where X represents the first direction X, Y represents the second direction Y, Z represents the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0030] Refer to Figure 1 and Figure 2 Figure 2 , the wall structure with a shape memory alloy connection device includes a wall unit 1 and a connection component 2; the wall unit 1 includes a thermal insulation board 11 and two leaf plates 12, the thermal insulation board 11 is arranged between the two leaf plates 12, and each leaf plate 12 and the thermal insulation board 11 are connected by the connection component 2; the connection component 2 includes a connection block 21, a plurality of fixing rods 22 and a shape memory connecting rod 23, the connection block 21 and the leaf plate 12 are fixedly connected by the fixing rods 22, and the connection block 21 is fixed to the thermal insulation board 11 by the shape memory connecting rod 23; in this embodiment, the shape memory connecting rod 23 is a shape memory alloy rod, and after being deformed under pressure or temperature change, the shape memory alloy rod can return to its initial shape; by setting the connection component 2, the leaf plate 12 and the thermal insulation board 11 are connected by the connection component 2, and the thermal insulation board 11 and the leaf plate 12 are fixed by the shape memory connecting rod 23, which improves the connection stability between the leaf plate 12 and the thermal insulation board 11, and at the same time improves the resistance and seismic performance of the leaf plate 12 when subjected to external loads and natural disasters.

[0031] In some embodiments, the material of the thermal insulation board 11 can be polystyrene board, or polyurethane foam, etc. In this embodiment, the material of the thermal insulation board 11 is polystyrene board, which has the characteristics of high compressive strength, low water absorption rate, moisture-proof, corrosion-resistant, low thermal conductivity, etc., and can achieve good thermal insulation performance; in this embodiment, the material of the connection block 21 is glass fiber reinforced composite (GFRP) material, which has the characteristics of high strength, light weight, fatigue resistance, and thermal stability. The connection between the connection block 21 and the shape memory connecting rod 23 realizes heat insulation bridge breaking, meets the building energy-saving requirements of ultra-low energy consumption, and enhances the overall stability and anti-deformation performance of the wall unit 1.

[0032] Refer to Figure 2 Figure 2 , in order to further improve the connection stability between the leaf plate 12 and the thermal insulation board 11, one end of the shape memory connecting rod 23 is connected to a connection block 21, and the other end passes through the thermal insulation board 11 and is connected to another connection block 21. Specifically, the shape memory connecting rod 23 is threadedly connected to the connection block 21, and the thermal insulation board 11 and the two leaf plates 12 are connected and fixed by the shape memory connecting rod 23.

[0033] Refer to Figure 2, To further improve the connection stability between the connection block 21 and the blade 12, in this embodiment, multiple fixing rods 22 are parallel to the first direction, and the remaining fixing rods 22 are parallel to the second direction, where the second direction is perpendicular to the first direction. For ease of description, the fixing rod 22 includes multiple first support rods 221 and second support rods 222. The first support rod 221 is parallel to the first direction, and the second support rod 222 is parallel to the second direction. One end of the first support rod 221 is located on one side of the blade 12, and the other end passes through the blade 12 and the connection block 21 in sequence and is located on the other side of the blade 12. One end of the second support rod 222 is located on one side of the blade 12, and the other end passes through the blade 12 and the connection plate and is located on the other side of the blade 12. The connection plate and the blade 12 are fixed by the first support rod 221 and the second support rod 222, improving the connection firmness between the connection plate and the blade 12.

[0034] Refer to Figure 2 , To further position the connection block 21, a first embedding groove 121 for accommodating the connection block 21 is provided on one side of the blade 12 along the third direction. A second embedding groove 111 is provided on the side of the heat preservation board 11 close to the blade 12 along the third direction. The third direction is perpendicular to both the first direction and the second direction. The first embedding groove 121 and the second embedding groove 111 are connected. One side of the first connection block 21 is located in the first embedding groove 121, and the other side is located in the second embedding groove 111. The connection block 21 is positioned by the first embedding groove 121 and the second embedding groove 111.

[0035] Refer to Figure 2 and Figure 3 , To further limit the shape memory connecting rod 23 in the first mounting hole 211, the wall structure with a shape memory alloy connecting device further includes a limiting component 3. The limiting component 3 includes a wedge block 31. First mounting holes 211 are provided on the side of the two connection blocks 21 close to each other along the third direction. The end of the shape memory connecting rod 23 is threadedly connected to the first mounting hole 211. A wedge block 31 is connected in the first mounting hole 211. The wedge block 31 is hinged to the hole wall of the first mounting hole 211. The hinge axis of the wedge block 31 along the connection block 21 is parallel to the rod length direction of the shape memory connecting rod 23. Wedge grooves 231 for accommodating the wedge block 31 are provided at both ends of the shape memory connecting rod 23. When the shape memory connecting rod 23 is tightened in the first mounting hole 211, the wedge block 31 is located in the wedge groove 231, and one side of the wedge block 31 is in contact with the groove wall of the wedge groove 231. When the shape memory connecting rod 23 is screwed into the first mounting hole 211, the wedge groove 231 at the end of the shape memory connecting rod 23 contacts the inclined surface of the wedge block 31, generating a self-locking effect. When subjected to an external force, the friction between the wedge block 31 and the wedge groove 231 increases, thereby reducing the loosening caused by the reverse rotation of the shape memory connecting rod 23.

[0036] Refer to Figure 3, To further achieve the rotation of the wedge block 31, a first rotating shaft 32 is fixedly connected to the inner wall of the first mounting hole 211. The first rotating shaft 32 is parallel to the rod length direction of the shape memory connecting rod 23. The side of the wedge block 31 away from the shape memory connecting rod 23 is rotatably connected to the first rotating shaft 32. By providing the first rotating shaft 32, the wedge block 31 rotates along the first rotating shaft 32.

[0037] Refer to Figure 4 , To further improve the connection stability between the two vane plates 12 and the heat preservation plate 11, the wall structure with a shape memory alloy connection device further includes an auxiliary connection assembly 4. The auxiliary connection assembly 4 further includes an auxiliary rod 41 and a rubber pad 42. The auxiliary rod 41 is parallel to the shape memory connecting rod 23. Second mounting holes 212 are formed in the sides of the two connection blocks 21 close to each other. A rubber pad 42 is fixedly connected to the inner wall of the second mounting hole 212. The auxiliary rod 41 is threadedly connected to the inner wall of the second mounting hole 212, and the end of the auxiliary rod 41 abuts against the rubber pad 42. By providing the auxiliary rod 41, the connection stability between the vane plate 12 and the heat preservation plate 11 is further improved. Rubber pads 42 are provided at both ends of the auxiliary rod 41. When an external force acts on the vane plate 12, the rubber pads 42 buffer the applied external force, reducing the occurrence of compression deformation of the vane plate 12 and the heat preservation plate 11.

[0038] Refer to Figure 4 and Figure 5 , To further reduce the deformation or displacement of the vane plate 12 caused by an external force, the auxiliary connection assembly 4 further includes a counterweight 43 and a first elastic member 44. A counterweight 43 is slidably connected to the auxiliary rod 41. A first receiving cavity 112 for receiving the auxiliary rod 41 is formed in the heat preservation plate 11. The auxiliary rod 41 slides in the first receiving cavity 112. The counterweight 43 is fixedly connected to the auxiliary rod 41 through a sleeve 431. The sleeve 431 is fixedly sleeved on the auxiliary rod 41. The counterweight 43 is fixedly connected to the sleeve 431. The counterweight 43 slides along the rod length direction of the auxiliary rod 41 in the first receiving cavity 112. A first elastic member 44 is fixedly connected to each of the two side walls of the first receiving cavity 112. The counterweight 43 is located between the two first elastic members 44. In this embodiment, the first elastic member 44 is a compression spring. When an external force is applied to one vane plate 12, it may cause the connection block 21 connected to the vane plate 12 to displace, further driving the connecting rod to displace, and driving the counterweight 43 toward the side close to the other connection block 21. By providing the first elastic member 44, when the external force decreases, under the action of the first elastic member 44, the counterweight 43 has a force to move toward the initial position, thereby further ensuring that the connection block 21 is driven to move toward the initial position to balance the internal force generated by the deformation of the connection block 21 due to the external force and offset part of the fatigue loss of the shape memory connecting rod 23.

[0039] Refer to Figure 5, To further guide the sliding of the counterweight 43 in the first accommodation cavity 112, the auxiliary connection assembly 4 further includes a telescopic rod 455. A telescopic rod 45 is provided on both sides of the counterweight 43. The telescopic direction of the telescopic rod 45 is parallel to the third direction. The fixed section of the telescopic rod 45 is fixedly connected to the side wall of the first accommodation cavity 112, and the movable section of the telescopic rod 45 is fixedly connected to the side wall of the counterweight 43. One end of the movable section and the fixed section of the telescopic rod 45 are slidably connected. An elastic sleeve is sleeved on the telescopic rod 45 to guide the sliding of the counterweight 43 by the telescopic rod 45.

[0040] Referring to Figure 6 , To reduce the frictional resistance of the counterweight 43 sliding on the bottom wall of the first accommodation cavity 112, the bottom wall of the counterweight 43 is universally hinged with a first ball 432, and the first ball 432 contacts the bottom wall of the first accommodation cavity 112.

[0041] The implementation principle of a wall structure with a shape memory alloy connection device in an embodiment of the present application is as follows: The connection assembly 2 connects the blade 12 and the insulation board 11. The insulation board 11 and the blade 12 are fixed by a shape memory connecting rod 23, which improves the connection stability between the blade 12 and the insulation board 11 and also improves the resistance and seismic performance of the blade 12 when subjected to external loads and natural disasters; When an external force is applied to a blade 12, it may cause the connection block 21 connected to the blade 12 to displace, further driving the connecting rod to displace, and driving the counterweight 43 to move toward the side close to the other connection block 21. By setting the first elastic member 44, when the external force decreases, under the action of the first elastic member 44, the counterweight 43 has a force to move toward the initial position, thereby further ensuring driving the connection block 21 to move toward the initial position to balance the internal force generated by the deformation of the connection block 21 due to the external force and offset part of the fatigue loss of the shape memory connecting rod 23.

[0042] An embodiment of the present application also discloses a construction method of a wall structure with a shape memory alloy connection device, including the following steps: S1: Measurement and marking: According to the design requirements, use measuring tools to mark the size of the connection block 21 on the insulation board 11; S2: Grooving: According to the size of the connection block 21, a first embedding groove 121 is opened on the blade 12, a second embedding groove 111 is opened on the insulation board 11, and the connection block 21 is placed in the first embedding groove 121 and the second embedding groove 111; S3: Install the connection block 21: Fix the blade 12 by connecting the connection block 21 through a fixing rod 22. Thread one end of the shape memory connecting rod 23 to a connection block 21, and the other end passes through the insulation board 11 and is threadedly connected to the other connection block 21 to fix the blade 12 and the insulation board 11; S4: Install the auxiliary connection component 4: Open a first accommodation cavity 112 in the heat preservation board 11. Thread one end of the auxiliary rod 41 to a connection block 21, and thread the other end through the first accommodation cavity 112 and then to another connection block 21. Install the counterweight 43 on the auxiliary rod 41.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A wall structure with a shape memory alloy connection device, characterized in that: It includes a wall unit (1) and a connecting component (2); The wall unit (1) includes a heat insulation board (11) and two leaf plates (12). The heat insulation board (11) is arranged between the two leaf plates (12), and each leaf plate (12) and the heat insulation board (11) are connected by the connecting component (2); The connecting component (2) includes a connecting block (21), a plurality of fixing rods (22) and a shape memory connecting rod (23). The connecting block (21) and the leaf plate (12) are fixedly connected by the fixing rods (22), and the connecting block (21) is fixed to the heat insulation board (11) by the shape memory connecting rod (23).

2. The wall structure with a shape memory alloy connection device according to claim 1, characterized in that: One end of the shape memory connecting rod (23) is connected to one connecting block (21), and the other end passes through the heat insulation board (11) and is then connected to the other connecting block (21).

3. A wall structure with a shape memory alloy connection device according to claim 1, characterized in that: The shape memory connecting rod (23) is threadedly connected to the connecting block (21).

4. A wall structure with a shape memory alloy connection device according to claim 1, characterized in that: A first embedding groove (121) for accommodating the connecting block (21) is formed in the leaf plate (12), and a second embedding groove (111) is formed on one side of the heat insulation board (11) close to the leaf plate (12). The first embedding groove (121) and the second embedding groove (111) are communicated. One side of the connecting block (21) is located in the first embedding groove (11), and the other side is located in the second embedding groove (111).

5. A wall structure with a shape memory alloy connection device according to claim 1, characterized in that: It further includes a limiting component (3). The limiting component (3) includes a wedge block (31). A first installation hole (211) is formed in the connecting block (21). The shape memory connecting rod (23) is threadedly connected to the first installation hole (211). A wedge block (31) is connected in the first installation hole (211). The wedge block (31) is hinged to the hole wall of the first installation hole (211). The hinge axis of the wedge block (31) along the connecting block (21) is parallel to the rod length direction of the shape memory connecting rod (23). Wedge grooves (231) for accommodating the wedge block (31) are formed at both ends of the shape memory connecting rod (23). When the shape memory connecting rod (23) is tightened in the first installation hole (211), the wedge block (31) is located in the wedge groove (231).

6. A wall structure with a shape memory alloy connection device according to claim 5, characterized in that: A first rotating shaft (32) is fixedly connected to the hole wall of the first installation hole (211). The first rotating shaft (32) is parallel to the rod length direction of the shape memory connecting rod (23). One side of the wedge block (31) away from the shape memory connecting rod (23) is rotatably connected to the first rotating shaft (32).

7. A wall structure with a shape memory alloy connection device according to any one of claims 1-6, characterized in that: It further includes an auxiliary connection component (4). The auxiliary connection component (4) further includes an auxiliary rod (41) and a rubber pad (42). The auxiliary rod (41) is parallel to the shape memory connecting rod (23). Second mounting holes (212) are formed on one side of the two connection blocks (21) close to each other. A rubber pad (42) is fixedly connected to the inner wall of the second mounting hole (212). The auxiliary rod (41) is inserted into the hole wall of the second mounting hole (212), and the end of the auxiliary rod (41) abuts against the rubber pad (42).

8. A wall structure with a shape memory alloy connection device according to claim 7, characterized in that: The auxiliary connection component (4) further includes a counterweight (43) and a first elastic member (44). A counterweight (43) is slidably connected to the auxiliary rod (41). A first receiving cavity (112) for receiving the auxiliary rod (41) is formed on the heat preservation board (11). The auxiliary rod (41) slides in the first receiving cavity (112). The counterweight (43) is directly or indirectly connected to the auxiliary rod (41). The counterweight (43) slides along the length direction of the auxiliary rod (41) in the first receiving cavity (112). A first elastic member (44) is fixedly connected to each of the two side walls of the first receiving cavity (112). The counterweight (43) is located between the two first elastic members (44).

9. A wall structure with a shape memory alloy connection device according to claim 8, characterized in that: A first ball (432) is gimbal-jointed to the bottom wall of the counterweight (43), and the first ball (432) contacts the bottom wall of the first receiving cavity (112).

10. A construction method for a wall structure with a shape memory alloy connection device, according to the wall structure with a shape memory alloy connection device as described in any one of claims 8-9, characterized in that: It includes the following steps: S1: Measuring and marking: According to the design requirements, use measuring tools to mark the dimensions of the connection blocks (21) on the heat preservation board (11). S2: Grooving: According to the dimensions of the connection blocks (21), a first embedding groove (11) is formed on the blade (12), and a second embedding groove (111) is formed on the heat preservation board (11). The connection blocks (21) are placed in the first embedding groove (11) and the second embedding groove (111). S3: Installing the connection blocks (21): Fix the blade (12) through the fixing rod (22) and the connection blocks (21). Thread one end of the shape memory connecting rod (23) to one connection block (21), and pass the other end through the heat preservation board (11) and then thread it to the other connection block (21) to fix the blade (12) and the heat preservation board (11). S4: Installing the auxiliary connection component (4)(2): Form a first receiving cavity (112) in the heat preservation board (11). Thread one end of the auxiliary rod (41) to one connection block (21), and pass the other end through the first receiving cavity (112) and then thread it to the other connection block (21). Install the counterweight (43) on the auxiliary rod (41).

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