Sandwich wall body based on assembly type self-resetting energy consumption connecting assembly and construction method of sandwich wall body

Abstract

The invention relates to a sandwich wall based on assembly type self-resetting energy consumption connecting assemblies and a construction method of the sandwich wall. A heat preservation plate is arranged between an inner acanthus and an outer acanthus of the sandwich wall. The assembly type self-resetting energy dissipation connecting assembly is connected with the inner acanthus and the outer acanthus. In the assembly type self-resetting energy consumption connecting assembly, wallboard connecting boxes are symmetrically pre-buried in an inner acanthus and an outer acanthus, and GFRP pultrusion profiles are correspondingly connected with the wallboard connecting boxes; the energy dissipation steel box is connected with the GFRP pultruded profiles at the two ends of the energy dissipation steel box respectively; the shape memory alloy rod penetrates through the GFRP pultrusion profile and the energy dissipation steel box. By adopting the GFRP pultruded profile, the thermal bridge effect can be effectively reduced, and the thermal insulation performance of the wall body is improved. By arranging the energy dissipation steel box, damage of earthquake energy to the main body structure is reduced through deformation energy dissipation. The shape memory alloy rods are introduced, so that the structure has a self-resetting function, the overall stability and the deformation resistance of the sandwich wall are enhanced, and it is ensured that the structure rapidly recovers to the initial state after an earthquake.

Description

Technical Field

[0001] The present invention belongs to the technical field of assembled concrete buildings, and in particular relates to a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly and a construction method thereof. Background Art

[0003] The prefabricated sandwich wall is mainly composed of three parts: inner blade, insulation sandwich layer and outer blade, which play the role of structural load-bearing, insulation and decorative facade respectively. The three parts are connected by special connectors. Existing connectors are mainly divided into two categories: metal connectors and non-metal connectors. Metal connectors include steel truss type, rod type and plate type connectors; non-metal connectors include plate type and pin type connectors. These connectors have achieved certain results in practical applications, but there are still some shortcomings in the specific implementation process, such as: the thermal conductivity of metal connectors is too large, which is easy to form thermal bridges and weaken the thermal performance of the wall; non-metal connectors have weak mechanical properties and are arranged in large quantities, which affects construction efficiency; the production of prefabricated sandwich walls needs to be completed in the factory. If the construction process is too complicated, the production and installation accuracy requirements of components will be increased accordingly; existing connectors are mostly rigid connectors, which are prone to brittle failure under external loads such as earthquakes, causing wall panel damage, and thus affecting structural safety; the later maintenance cost is high and the economic benefits are not good. Therefore, it is necessary to improve the thermal insulation performance and structural safety of sandwich walls while reducing construction difficulty and cost. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly and a construction method thereof. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0005] The present invention provides a sandwich wall based on an assembled self-resetting energy-absorbing connection component, comprising: an inner blade plate, an outer blade plate and an assembled self-resetting energy-absorbing connection component, wherein an insulation plate is provided between the inner blade plate and the outer blade plate; the assembled self-resetting energy-absorbing connection component is respectively connected to the inner blade plate and the outer blade plate; the assembled self-resetting energy-absorbing connection component comprises: a wall panel connection box, a GFRP pultruded profile, an energy-absorbing steel box and a shape memory alloy rod; the wall panel connection box is symmetrically pre-embedded in the inner blade plate and the outer blade plate, and the GFRP pultruded profile is correspondingly connected to the wall panel connection box; the energy-absorbing steel box is respectively connected to the GFRP pultruded profile at both ends thereof; the shape memory alloy rod passes through the GFRP pultruded profile and the energy-absorbing steel box.

[0006] In one embodiment of the present invention, a plurality of the wall panel connection boxes are provided on one side of the inner blade or the outer blade, the plurality of the wall panel connection boxes are arranged at intervals, and each of the wall panel connection boxes is detachably connected to the GFRP pultruded profile.

[0007] In one embodiment of the present invention, the GFRP pultruded profile is box-shaped and has a through hole thereon; the through hole is located in the middle of the GFRP pultruded profile, and the shape memory alloy rod passes through the through hole and is connected to the GFRP pultruded profile as a whole.

[0008] In one embodiment of the present invention, holes or grooves are opened inside the energy-absorbing steel box to form a deformable energy-absorbing structure.

[0009] In one embodiment of the present invention, the wall panel connection box and the GFRP pultruded profile are anchored by high-strength screws and locked by double nuts.

[0010] In one embodiment of the present invention, both ends of the shape memory alloy rod are rigidly connected to the GFRP pultruded profile through a plurality of high-strength nuts.

[0011] In one embodiment of the present invention, both ends of the shape memory alloy rod are connected with GFRP sleeves; the inner wall of each GFRP sleeve is provided with a hexagonal groove, the GFRP sleeve is covered on the end of the shape memory alloy rod and the outside of the high-strength nut, and is connected to the high-strength nut through the hexagonal groove.

[0012] In one embodiment of the present invention, the insulation board is provided with a reserved hole, the assembled self-resetting energy-absorbing connection component passes through the reserved hole, and a foaming agent is filled between the reserved hole and the assembled self-resetting energy-absorbing connection component.

[0013] The present invention also provides a construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly, which is used to prepare the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly, and the method comprises:

[0014] Step 1: prefabricate GFRP pultruded profiles and energy-absorbing steel boxes respectively, and embed wall panel connection boxes in the steel meshes of the inner blade and the outer blade respectively;

[0015] Step 2: Connect the GFRP pultruded profile at both ends of the energy-absorbing steel box by high-strength bolts, insert a shape memory alloy rod through the GFRP pultruded profile and the energy-absorbing steel box, fix the two ends of the shape memory alloy rod to the GFRP pultruded profile by high-strength nuts, and sleeve GFRP sleeves on both ends of the shape memory alloy rod;

[0016] Step 3: Anchoring one of the GFRP pultruded profiles to the wall panel connection box on the inner leaf plate by means of high-strength screws;

[0017] Step 4: pour the inner blade concrete, and before the concrete solidifies, install the insulation board with reserved holes on the inner blade, ensuring that the corners of the insulation board are aligned with the wall of the inner blade;

[0018] Step 5: Connect another GFRP pultruded profile to the wall panel connection box on the outer blade through a high-strength screw, and pour the outer blade concrete;

[0019] Step 6: After the outer blade concrete solidifies and is cured, tighten all high-strength screws, high-strength bolts and high-strength nuts for a second time, and pour grouting material into the wall panel connection box to level the facade and complete the construction of the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly.

[0020] In one embodiment of the present invention, in step 4, the reserved holes of the insulation board and the gaps of the assembled self-resetting energy-absorbing connection components are filled with polyurethane foaming agent, and the polyurethane foaming agent forms a continuous insulation interface after curing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly of the present invention adopts GFRP pultruded profiles in the assembled self-resetting energy-absorbing connection assembly, which has high strength, light weight, corrosion resistance and low thermal conductivity, and can effectively reduce the thermal bridge effect and improve the thermal insulation performance of the wall. By setting up an energy-absorbing steel box, it can provide sufficient bearing capacity in small earthquakes to ensure the safety of the structure; in large earthquakes, the deformation energy is dissipated to reduce the damage to the main structure caused by the earthquake energy. The introduction of shape memory alloy rods gives the structure a self-resetting function, enhances the overall stability and deformation resistance of the sandwich wall, and ensures that the structure quickly recovers to its initial state after an earthquake.

[0023] The construction method of the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly of the present invention is simple and efficient. The assembled self-resetting energy-absorbing connection assembly is prefabricated in the factory and the quality is controllable. It is then installed on site, which reduces the construction difficulty and labor costs. The assembled self-resetting energy-absorbing connection assembly is hidden under the facade of the building, does not affect the beauty of the building, and is convenient for later maintenance. The outer blades can also be disassembled and replaced after the earthquake, which extends the service life after the earthquake, significantly improves the durability and construction efficiency of the building, and reduces the operation and maintenance costs.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly provided by an embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of an assembled self-resetting energy-consuming connection assembly provided in an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the exploded structure of the assembled self-resetting energy-consuming connection assembly provided in an embodiment of the present invention;

[0028] Figure 4 It is a structural side view of an assembled self-resetting energy-consuming connection assembly provided in an embodiment of the present invention;

[0029] Figure 5 is a structural schematic diagram of a GFRP pultruded profile provided in an embodiment of the present invention (first viewing direction);

[0030] Figure 6 is a schematic structural diagram of a GFRP pultruded profile provided in an embodiment of the present invention (second viewing direction);

[0031] Figure 7 It is a flow chart of a construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly provided by an embodiment of the present invention.

[0032] Figure numerals: 100-inner blade; 200-outer blade; 300-assembled self-resetting energy-absorbing connection assembly; 310-wall panel connection box; 320-GFRP pultruded profile; 330-energy-absorbing steel box; 340-shape memory alloy rod; 350-high-strength screw; 360-high-strength nut; 370-GFRP sleeve. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the following is a detailed description of a sandwich wall based on an assembled self-resetting energy-absorbing connection component and a construction method thereof proposed in accordance with the present invention, in combination with the accompanying drawings and specific implementation methods.

[0034] The above and other technical contents, features and effects of the present invention are clearly presented in the following detailed description of the specific implementation modes in conjunction with the accompanying drawings. Through the description of the specific implementation modes, the technical means and effects adopted by the present invention to achieve the predetermined purpose can be more deeply and specifically understood. However, the attached drawings are only for reference and explanation purposes and are not used to limit the technical solutions of the present invention.

[0035] Embodiment 1

[0036] Existing assembled sandwich walls use metal connectors. Due to the high thermal conductivity of metal connectors, they are prone to form thermal bridges, which weakens the thermal insulation performance. Non-metallic connectors have weak mechanical properties and are arranged in large quantities, which affects construction efficiency. In addition, existing rigid connectors are prone to brittle failure under earthquakes, affecting structural safety. In view of this, the present invention provides a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly, such as Figures 1 to 4 As shown, Figure 1 It is a structural schematic diagram of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly provided by an embodiment of the present invention; Figure 2 It is a structural schematic diagram of an assembled self-resetting energy-consuming connection assembly provided in an embodiment of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the assembled self-resetting energy-consuming connection assembly provided in an embodiment of the present invention; Figure 4 It is a structural side view of an assembled self-resetting energy-absorbing connection assembly provided in an embodiment of the present invention.

[0037] In this embodiment, the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly includes: an inner blade plate 100, an outer blade plate 200 and an assembled self-resetting energy-absorbing connection assembly 300, wherein an insulation board is provided between the inner blade plate 100 and the outer blade plate 200; the assembled self-resetting energy-absorbing connection assembly 300 connects the inner blade plate 100 and the outer blade plate 200 respectively; the assembled self-resetting energy-absorbing connection assembly 300 includes: a wall panel connection box 310, a GFRP pultruded profile 320, an energy-absorbing steel box 330 and a shape memory alloy rod 340; the wall panel connection box 310 is symmetrically embedded in the inner blade plate 100 and the outer blade plate 200, and the GFRP pultruded profile 320 is correspondingly connected to the wall panel connection box 310; the energy-absorbing steel box 330 is respectively connected to the GFRP pultruded profile 320 at both ends thereof; and the shape memory alloy rod 340 runs through the GFRP pultruded profile 320 and the energy-absorbing steel box 330.

[0038] In an optional embodiment, a plurality of wall panel connection boxes 310 are provided on one side of the inner blade 100 or the outer blade 200 , the plurality of wall panel connection boxes 310 are arranged at intervals, and each wall panel connection box 310 is detachably connected to the GFRP pultruded profile 320 .

[0039] Exemplarily, the wall panel connection box 310 and the GFRP pultruded profile 320 are anchored by a high-strength screw 350 and locked by a double nut to ensure the stability and reliability of the connection.

[0040] like Figure 5 and Figure 6 As shown, Figure 5 is a structural schematic diagram of a GFRP pultruded profile provided in an embodiment of the present invention (first viewing direction); Figure 6 It is a schematic structural diagram of a GFRP pultruded profile provided in an embodiment of the present invention (second viewing direction).

[0041] In an optional embodiment, the GFRP pultruded profile 320 is box-shaped and has a through hole therein; the through hole is located in the middle of the GFRP pultruded profile 320 , and the shape memory alloy rod 340 passes through the through hole and is connected to the GFRP pultruded profile 320 as a whole.

[0042] Exemplarily, the GFRP pultruded profile 320 is provided with two end plates, which are provided with connection holes, and are connected to the wall panel connection box 310 through the connection holes.

[0043] It is worth noting that GFRP (Glass Fiber Reinforced Plastic) is a composite material with glass fiber and its products as reinforcing materials and synthetic resin as matrix material. It has the characteristics of high strength, light weight, corrosion resistance and low thermal conductivity. In particular, the high strength of glass fiber enables GFRP to withstand large tension and pressure. Its tensile strength and bending strength are both high, which can meet the bearing requirements of various engineering structures. At the same time, the use of GFRP pultruded profile 320 can also effectively reduce heat conduction and break the thermal bridge effect. This is because the thermal conductivity of the GFRP material itself is low, which means that its ability to conduct heat is weak. In building structures, when GFRP is used as a connector, it can effectively reduce the transfer of heat from high-temperature areas to low-temperature areas, thereby reducing the impact of the thermal bridge effect and improving the thermal insulation performance of the building.

[0044] In addition, the shape memory alloy rod 340 has excellent elasticity and shape memory properties, and can automatically return to its original shape after being subjected to external loads. This feature not only significantly enhances the overall stability of the wall structure, allowing it to maintain structural integrity under extreme external forces such as earthquakes, but also effectively improves the wall's ability to resist deformation and reduces the impact of earthquake energy on the main structure. By applying the shape memory alloy rod 340 to the assembled self-resetting energy-absorbing connection assembly 300 of this embodiment, the sandwich wall can automatically reset under load to avoid structural damage caused by accumulated deformation, thereby maximizing the safety and durability of the building structure, reducing later maintenance costs, and improving the building's seismic performance and service life.

[0045] In an optional embodiment, holes or grooves are opened inside the energy-absorbing steel box 330 to form a deformable energy-absorbing structure.

[0046] Exemplarily, a rectangular groove or a circular hole is opened inside the energy-absorbing steel box 330 to form a deformable energy-absorbing structure, so as to dissipate energy through plastic deformation under the action of an earthquake.

[0047] Exemplarily, the energy-absorbing steel box 330 is connected to the GFRP pultruded profile 320 by high-strength bolts.

[0048] It is worth noting that when an earthquake occurs, the energy-absorbing steel box 330 absorbs and dissipates the seismic energy through the above-mentioned energy-absorbing mechanism, reduces the vibration amplitude of the wall, and prevents the wall from cracking and damage; it can provide sufficient bearing capacity to ensure the safety of the main structure during a small earthquake, and can fully exert its ductility to dissipate energy during a large earthquake, inducing the damage of the assembled self-resetting energy-absorbing connection assembly 300 to be concentrated on the energy-absorbing steel box 330, so that the seismic energy received by the important structure is reduced, and the safety of the main structure is guaranteed to the maximum extent, thereby improving the seismic performance and safety of the entire building structure. That is, the role of the energy-absorbing steel box 330 is to absorb part of the energy by exerting its energy-absorbing effect when the wall is impacted by external force, so as to protect the main structure from damage.

[0049] In addition, since the main structure of the assembled self-resetting energy-absorbing connection assembly 300 is a detachable connection, when the outer blade 200 is severely damaged, the outer blade 200 can be disassembled and replaced by removing the high-strength screw 350 at the wall panel connection box 310 and the GFRP pultruded profile 320; according to actual conditions, the energy-absorbing steel box 330 or the insulation board can also be replaced at the same time to ensure the safety and durability of the structure.

[0050] In an optional embodiment, both ends of the shape memory alloy rod 340 are rigidly connected to the GFRP pultruded profile 320 via a plurality of high-strength nuts 360 to ensure the firmness and stability of the connection.

[0051] Furthermore, both ends of the shape memory alloy rod 340 are connected with GFRP sleeves 370; the inner wall of each GFRP sleeve 370 is provided with a hexagonal groove, and the GFRP sleeve 370 is covered on the end of the shape memory alloy rod 340 and the high-strength nut 360, and is connected to the high-strength nut 360 through the hexagonal groove.

[0052] Exemplarily, the high-strength nut 360 is a hexagonal nut, and the inner wall of each GFRP sleeve 370 is provided with a hexagonal groove for connecting the high-strength nut 360 .

[0053] Exemplarily, the gap between the GFRP sleeve 370 and the shape memory alloy rod 340 is filled with polyurethane foaming agent.

[0054] It is worth noting that, due to the high thermal conductivity of the shape memory alloy rod 340, in order to avoid the formation of a thermal bridge effect, this embodiment seals the shape memory alloy rod 340 by sleeves of GFRP sleeves 370 at both ends to insulate and protect the shape memory alloy rod 340, and prevent heat conduction and external corrosion. The GFRP sleeve 370 isolates the heat conduction path, thereby achieving the effect of breaking the thermal bridge; it not only takes advantage of the shape memory alloy rod 340 in terms of earthquake resistance and self-reset, but also solves the effect of its thermal conductivity on the thermal insulation performance of the wall, and further improves the comprehensive performance of the sandwich wall.

[0055] In an optional embodiment, the insulation board is provided with a reserved hole, the assembled self-resetting energy-consuming connection component 300 passes through the reserved hole, and a foaming agent is filled between the reserved hole and the assembled self-resetting energy-consuming connection component 300.

[0056] Exemplarily, the insulation board is provided with reserved holes to ensure that the positions of the reserved holes are accurate, and then the assembled self-resetting energy-absorbing connection assembly 300 is passed through the reserved holes so that the insulation board is located between the inner blade 100 and the outer blade 200.

[0057] Exemplarily, the gap between the reserved hole and the assembled self-resetting energy-absorbing connection assembly 300 is filled with polyurethane foaming agent to ensure the heat preservation effect and sealing performance.

[0058] It is worth noting that the sandwich wall based on the assembled self-resetting energy-absorbing connection components of this embodiment can completely hide the connection structure under the building facade without affecting the aesthetics of the building.

[0059] The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly of the present invention adopts GFRP pultruded profiles in the assembled self-resetting energy-absorbing connection assembly, which has high strength, light weight, corrosion resistance and low thermal conductivity, and can effectively reduce the thermal bridge effect and improve the thermal insulation performance of the wall. By setting up an energy-absorbing steel box, it can provide sufficient bearing capacity in small earthquakes to ensure the safety of the structure; in large earthquakes, the deformation energy is dissipated to reduce the damage to the main structure caused by the earthquake energy. The introduction of shape memory alloy rods gives the structure a self-resetting function, enhances the overall stability and deformation resistance of the sandwich wall, and ensures that the structure quickly recovers to its initial state after an earthquake.

[0060] Embodiment 2

[0061] like Figure 7 As shown, Figure 7 It is a flow chart of a construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly provided by an embodiment of the present invention.

[0062] The present invention also provides a construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly, which is used to prepare the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly of Example 1, and the method comprises:

[0063] Step 1: Prefabricate GFRP pultruded profiles and energy-absorbing steel boxes respectively, and embed wall panel connection boxes in the steel mesh of the inner leaf plate and the outer leaf plate respectively.

[0064] Exemplarily, the GFRP pultruded profile is prepared by a pultrusion post-processing method, and holes are opened at the end plate positions for connecting the wall panel connection box; at the same time, through holes are opened on the GFRP pultruded profile for connecting the shape memory alloy rod.

[0065] Step 2: Connect the GFRP pultruded profiles at both ends of the energy-absorbing steel box by high-strength bolts, insert the shape memory alloy rod through the GFRP pultruded profile and the energy-absorbing steel box, fix the two ends of the shape memory alloy rod to the GFRP pultruded profile by high-strength nuts, and sleeve GFRP sleeves on both ends of the shape memory alloy rod;

[0066] Step 3: Anchor one of the GFRP pultruded profiles to the wall panel connection box on the inner leaf plate through high-strength screws.

[0067] Exemplarily, the GFRP pultruded profile is anchored to the wall panel connection box on the inner leaf plate by high-strength screws and nuts.

[0068] Step 4: Pour the inner blade concrete, and before the concrete solidifies, install the insulation board with reserved holes on the inner blade, ensuring that the corners of the insulation board are aligned with the wall of the inner blade.

[0069] Specifically, when the concrete of the inner blade plate has not yet solidified, the insulation board with reserved holes is placed on the inner blade plate to ensure that the edges and corners of the insulation board are aligned with the wall of the inner blade plate.

[0070] In an optional embodiment, in step 4, the reserved holes of the insulation board and the gaps of the assembled self-resetting energy-absorbing connection components are filled with polyurethane foaming agent. After the polyurethane foaming agent is cured, a continuous insulation interface is formed to provide effective thermal insulation function.

[0071] Step 5: Connect another GFRP pultruded profile to the wall panel connection box on the outer blade through high-strength screws, and pour the outer blade concrete;

[0072] In an optional embodiment, both the inner blade plate and the outer blade plate are cast using steel formwork to ensure the accuracy of the prefabricated components, while the formwork can be reused.

[0073] Step 6: After the outer blade concrete solidifies and is cured, tighten all high-strength screws, high-strength bolts and high-strength nuts for a second time, and pour grouting material into the wall panel connection box to level the facade and complete the construction of the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly.

[0074] It is worth noting that by tightening all high-strength screws, high-strength bolts and high-strength nuts twice, the loss of preload force caused by concrete shrinkage can be eliminated to ensure the connection quality between the assembled self-resetting energy-absorbing connection components and the inner blades and outer blades. At the same time, compared with the traditional cast-in-place concrete structure construction, most of the structures of the present invention can be manufactured in the factory. Since the environment in the factory is controllable, the quality of the product is guaranteed to the maximum extent. The assembly line work can greatly improve the assembly efficiency, and problems can be adjusted in time to avoid repeated transportation. In addition, compared with the traditional sandwich wall, the present invention has a simple structure, convenient construction, low requirements on the production and installation accuracy of the components, and low operating requirements for on-site workers. At the same time, the quality is easy to ensure and the construction quality is easy to detect.

[0075] The construction method of the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly of the present invention is simple and efficient. The assembled self-resetting energy-absorbing connection assembly is prefabricated in the factory and the quality is controllable. It is then installed on site, which reduces the construction difficulty and labor costs. The assembled self-resetting energy-absorbing connection assembly is hidden under the facade of the building, does not affect the beauty of the building, and is convenient for later maintenance. The outer blades can also be disassembled and replaced after the earthquake, which extends the service life after the earthquake, significantly improves the durability and construction efficiency of the building, and reduces the operation and maintenance costs.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "include", "comprise" or any other variant is intended to cover non-exclusive inclusion, so that the article or device including a series of elements includes not only those elements, but also other elements that are not explicitly listed. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the article or device including the elements. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The orientation or position relationship indicated by "up", "down", "left", "right", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0077] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A sandwich wall based on an assembled self-resetting energy-absorbing connection assembly, characterized in that: include: An inner blade (100), an outer blade (200) and an assembled self-resetting energy-consuming connection assembly (300), wherein: A heat preservation plate is provided between the inner blade plate (100) and the outer blade plate (200); The assembled self-resetting energy-absorbing connection assembly (300) is respectively connected to the inner blade (100) and the outer blade (200); the assembled self-resetting energy-absorbing connection assembly (300) comprises: a wall panel connection box (310), a GFRP pultruded profile (320), an energy-absorbing steel box (330) and a shape memory alloy rod (340); The wall panel connection box (310) is symmetrically embedded in the inner blade (100) and the outer blade (200); the GFRP pultruded profile (320) is correspondingly connected to the wall panel connection box (310); the energy-absorbing steel box (330) is respectively connected to the GFRP pultruded profile (320) at both ends thereof; and the shape memory alloy rod (340) passes through the GFRP pultruded profile (320) and the energy-absorbing steel box (330).

2. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: A plurality of the wall panel connection boxes (310) are provided on one side of the inner blade (100) or the outer blade (200), the plurality of wall panel connection boxes (310) are arranged at intervals, and each of the wall panel connection boxes (310) is detachably connected to the GFRP pultruded profile (320).

3. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: The GFRP pultruded profile (320) is box-shaped and has a through hole therein; the through hole is located in the middle of the GFRP pultruded profile (320); the shape memory alloy rod (340) passes through the through hole and is connected to the GFRP pultruded profile (320) as a whole.

4. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: The energy-absorbing steel box (330) has holes or grooves inside to form a deformable energy-absorbing structure.

5. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: The wall panel connection box (310) and the GFRP pultruded profile (320) are anchored by a high-strength screw (350) and locked by a double nut.

6. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: Both ends of the shape memory alloy rod (340) are rigidly connected to the GFRP pultruded profile (320) via a plurality of high-strength nuts (360).

7. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 6 is characterized in that: Both ends of the shape memory alloy rod (340) are connected to GFRP sleeves (370); the inner wall of each GFRP sleeve (370) is provided with a hexagonal groove, and the GFRP sleeve (370) is covered on the end of the shape memory alloy rod (340) and the outside of the high-strength nut (360), and is connected to the high-strength nut (360) through the hexagonal groove.

8. The sandwich wall based on the assembled self-resetting energy-absorbing connection assembly according to claim 1 is characterized in that: The insulation board is provided with a reserved hole, the assembled self-resetting energy-consuming connection component (300) passes through the reserved hole, and a foaming agent is filled between the reserved hole and the assembled self-resetting energy-consuming connection component (300).

9. A construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly, characterized in that: A method for preparing a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly as claimed in any one of claims 1 to 8 comprises: Step 1: prefabricate GFRP pultruded profiles and energy-absorbing steel boxes respectively, and embed wall panel connection boxes in the steel meshes of the inner blade and the outer blade respectively; Step 2: Connect the GFRP pultruded profile at both ends of the energy-absorbing steel box by high-strength bolts, insert a shape memory alloy rod through the GFRP pultruded profile and the energy-absorbing steel box, fix the two ends of the shape memory alloy rod to the GFRP pultruded profile by high-strength nuts, and sleeve GFRP sleeves on both ends of the shape memory alloy rod; Step 3: Anchoring one of the GFRP pultruded profiles to the wall panel connection box on the inner leaf plate by means of high-strength screws; Step 4: pour the inner blade concrete, and before the concrete solidifies, install the insulation board with reserved holes on the inner blade, ensuring that the corners of the insulation board are aligned with the wall of the inner blade; Step 5: Connect another GFRP pultruded profile to the wall panel connection box on the outer blade through a high-strength screw, and pour the outer blade concrete; Step 6: After the outer blade concrete solidifies and is cured, tighten all high-strength screws, high-strength bolts and high-strength nuts for a second time, and pour grouting material into the wall panel connection box to level the facade and complete the construction of the sandwich wall based on the assembled self-resetting energy-absorbing connection assembly.

10. The construction method of a sandwich wall based on an assembled self-resetting energy-absorbing connection assembly according to claim 9, characterized in that: In the step 4, the gap between the reserved hole of the insulation board and the assembled self-resetting energy-absorbing connection component is filled with polyurethane foaming agent, and the polyurethane foaming agent forms a continuous insulation interface after curing.

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