Multi-stage self-resetting friction damping connecting device for connecting prefabricated wallboards

Abstract

The invention relates to the technical field of structural engineering, in particular to a multi-stage self-resetting friction damping connecting device for prefabricated wallboard connection, which comprises a bottom plate, a limiting plate, a disc spring and a bolt connecting piece, and when no external load acts, the bottom plate, the limiting plate and the disc spring are completely independent; when the external load effect is small, the friction piece and the limiting plate rotate, the disc spring deforms, and energy is consumed through friction force generated between the friction piece and the limiting plate; when the external load effect is large, the screw rod of the bolt of the bolt connecting piece and the bottom plate generate plastic deformation to consume energy; and when the external load disappears, the disc spring releases elastic force to extrude the limiting plate, so that the bottom plate is reset. The device has the advantages that the disc springs have elasticity, the self-recovery performance of the device is improved, and damage to the structure can be effectively reduced by combining energy consumption and the self-recovery performance under the small earthquake condition, so that the anti-seismic performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of structural engineering, and in particular to a multi-stage self-resetting friction damping connection device for connecting prefabricated wall panels. Background Art

[0002] With the rapid development of modern construction technology, prefabricated buildings have gradually become an important development direction in the construction industry due to their advantages such as fast construction speed, environmental protection and energy saving. However, prefabricated buildings still face many challenges in terms of structural stability and seismic performance. Traditional prefabricated wall panel connectors simply connect the wall panels to beams or columns to form an overall structure, but this connection method has many shortcomings, such as poor seismic performance, short service life, and low connection stability. When natural disasters such as earthquakes occur, prefabricated buildings are often easily damaged due to the lack of connectors, resulting in the overall structural instability or even collapse, posing a serious threat to people's lives and property. Therefore, it is particularly important to develop a prefabricated wall panel connection device with high-efficiency seismic performance, self-resetting ability and long service life.

[0003] Existing prefabricated wall panel connection systems mostly utilize single connectors or simple friction damping designs, which often perform poorly when dealing with complex and variable external loads. Especially during earthquakes, traditional connectors often rely solely on the rigidity of their own materials to resist external forces, making them prone to damage and unable to self-reset, making it difficult for the structure to return to its original form after an earthquake. Furthermore, traditional connectors present numerous inconveniences during design and construction, such as complex installation, poor adjustability, and long construction cycles, all of which limit the application and development of prefabricated buildings. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage self-resetting friction damping connection device for prefabricated wall panels based on the shortcomings of the above-mentioned prior art. Through the multi-stage friction damping design and self-resetting mechanism, the device can effectively improve the connection stability and seismic performance of prefabricated wall panels, while simplifying the installation process, improving construction efficiency, and providing strong support for the development of prefabricated buildings.

[0005] The purpose of the present invention is achieved by the following technical solutions: A multi-stage self-resetting friction damping connection device for connecting prefabricated wall panels, characterized by comprising a base plate, a limit plate, a disc spring, and a bolt connection member, wherein the base plate is provided with a friction member, the limit plate is provided on one side of the base plate provided with the friction member, the limit plate and the friction member are structurally matched and can rotate relative to each other, the disc spring is provided on the other side of the limit plate, and the bolt connection member connects the base plate, the limit plate, and the disc spring to form an integral structure; When there is no external load, the bottom plate, the limit plate and the disc spring are completely independent; When the external load is small, the friction member and the limit plate rotate, the disc spring deforms, and friction between the friction member and the limit plate consumes energy. When the external load is large, the screw rod of the bolt of the bolt connector and the base plate produce plastic deformation to consume energy; When the external load disappears, the disc spring releases its elastic force to squeeze the limit plate to restore the bottom plate.

[0006] The facing surfaces of the friction member and the limit plate are continuous concave-convex surfaces, and a concave-convex fit is formed between the friction member and the limit plate; by adjusting the inclination and dynamic friction coefficient of the concave-convex surface, the energy consumption capacity and recovery capacity of the device are regulated.

[0007] The disc spring comprises a plurality of disc spring groups, and each disc spring group is composed of a single disc spring or a plurality of disc springs connected in series or in parallel.

[0008] The bottom plate includes a steel backing plate and the friction member, and the friction member is welded onto the steel backing plate.

[0009] The centers of the bottom plate, the limiting plate and the disc spring are provided with reserved holes for the bolts of the bolt connector to pass through, and the reserved holes are concentrically arranged.

[0010] The bolt connector includes a bolt and a nut; by adjusting the pre-tightening force of the bolt, the energy consumption capacity and recovery capacity of the device are regulated.

[0011] The advantages of the present invention are: 1) The serrated surface between the bottom plate and the limit plate of the device can provide energy dissipation capacity for the entire device, and the disc spring is elastic, which improves the self-recovery of the device. In the case of small earthquakes, the combination of energy dissipation and self-recovery can effectively reduce the damage to the structure, thereby improving the seismic performance.

[0012] 2) Each component of the device is independent. If any component is damaged, it can be replaced without being subjected to external loads, which improves the repairability of the device.

[0013] 3) The inclination of the bottom plate friction part and the recoverability of the disc spring preload adjustment device can be adjusted, and the energy consumption capacity and self-recovery degree of the device can be accurately controlled, thereby reducing the damage rate of the device to a certain extent.

[0014] 4) It has the advantages of low cost, convenient construction, and easy replacement, and can effectively increase the seismic performance of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the explosion of the structure of the present invention; Figure 3 Schematic diagram of the structure of the bottom plate of the present invention; Figure 4 Schematic diagram of the structure of the limiting plate in the present invention; Figure 5 It is a structural schematic diagram of the bolt and nut in the present invention. DETAILED DESCRIPTION

[0016] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: like Figure 1-5 As shown, the marks in the figure represent: Base plate 1, limit plate 2, disc spring 3, bolt 4, nut 5; Steel backing plate 11, friction member 12; A first disc spring group 31 and a second disc spring group 32 .

[0017] Example: Combination Figure 1 and Figure 2 As shown, the multi-stage self-resetting friction damping connection device for connecting prefabricated wall panels in this embodiment includes a base plate 1, a stop plate 2, a disc spring 3, a bolt 4, and a nut 5. Two pre-set holes for the bolt 4 are provided in the center of each of the base plate 1, the stop plate 2, and the disc spring 3, and the pre-set holes are arranged concentrically. The bolt 4 is passed through the pre-set holes of the base plate 1, the stop plate 2, and the disc spring 3 and tightened with the nut to connect the base plate 1, the stop plate 2, and the disc spring 3 to form an integrated structure.

[0018] like Figure 3 As shown, the base plate 1 includes a steel backing plate 11 and a friction member 12. The friction member 12 is welded to the steel backing plate 11. The two form an integral structure to ensure that the rotation angle generated by the steel backing plate 11 can be effectively transmitted to the friction member 12. The surface of the friction member 12 is a continuous concave and convex surface.

[0019] like Figure 4 As shown, the limiting plate 2 is arranged on the outer side of the bottom plate 1 and has a concave-convex surface that matches the concave-convex surface of the friction member 12 , and the two concave-convex surfaces are arranged opposite to each other.

[0020] like Figure 1 or Figure 2 As shown, the disc spring 3 is arranged on the outside of the limiting plate 2, and includes a first disc spring group 31 and a second disc spring group 32. The first disc spring group 31 and the second disc spring group 32 are a single disc spring or a plurality of disc springs connected in series or in parallel.

[0021] When applied, this embodiment has the following principles: 1) When there is no external load, each component is completely independent.

[0022] 2) When the external load is small, the base plate 1 rotates, driving the friction member 12 to rotate. Friction is generated between the friction member 12 and the concave and convex surface of the limit plate 2 to consume energy. At the same time, the spring 3 deforms and further dissipates energy.

[0023] 3) When the external load disappears, the disc spring 3 releases its elastic force to squeeze the limit plate 2 to restore the base plate 1 to its original shape, reducing residual deformation and lowering maintenance costs.

[0024] 4) When the external load is large, the rotation angle between the base plate 1 and the limit plate 2 reaches the maximum, and the screw of the bolt 4 and the base plate 1 produce plastic deformation to consume energy, thereby reducing the damage to the main components and improving the safety and reliability of the prefabricated wall panel connection.

[0025] When applied, this embodiment has a multi-level energy dissipation mechanism and can adapt to different degrees of external loads, so that this embodiment can adapt to different prefabricated wall panel sizes, load conditions and connection requirements, and has extremely strong adaptability.

[0026] Specifically, the multi-level energy consumption mechanism in this embodiment includes the following aspects: 1) The concave and convex surface provided between the friction member 12 and the limit plate 2 can precisely control the energy dissipation capacity and recovery capacity of the device by changing the inclination of the inclined surface and the dynamic friction coefficient of the contact surface in the processing room.

[0027] 2) The pre-tightening force of bolt 4 can accurately control the energy consumption and recovery capabilities of the device.

[0028] 3) Through the combinability of the disc spring 3 and the quick and efficient installation and removal of the bolt 4 and nut 5, the number, model and type of the disc spring can be replaced.

[0029] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, so they are not described in detail here.

Claims

1. A multi-stage self-resetting friction damping connection device for prefabricated wall panels, characterized by: The invention comprises a base plate, a limiting plate, a disc spring and a bolt connection, wherein the base plate is provided with a friction member, the limiting plate is provided on one side of the base plate provided with the friction member, the limiting plate and the friction member are matched in structure and can rotate relative to each other, the disc spring is provided on the other side of the limiting plate, and the bolt connection connects the base plate, the limiting plate and the disc spring to form an integral structure; When there is no external load, the bottom plate, the limit plate and the disc spring are completely independent; When the external load is small, the friction member and the limit plate rotate, the disc spring deforms, and friction between the friction member and the limit plate consumes energy. When the external load is large, the screw rod of the bolt of the bolt connector and the base plate produce plastic deformation to consume energy; When the external load disappears, the disc spring releases its elastic force to squeeze the limit plate to restore the bottom plate.

2. A multi-stage self-resetting friction damping connection device for prefabricated wall panels according to claim 1, characterized in that: The facing surfaces of the friction member and the limit plate are continuous concave-convex surfaces, and a concave-convex fit is formed between the friction member and the limit plate; by adjusting the inclination and dynamic friction coefficient of the concave-convex surface, the energy consumption capacity and recovery capacity of the device are regulated.

3. The multi-stage self-resetting friction damping connection device for prefabricated wall panels according to claim 1, characterized in that: The disc spring comprises a plurality of disc spring groups, and each disc spring group is composed of a single disc spring or a plurality of disc springs connected in series or in parallel.

4. The multi-stage self-resetting friction damping connection device for prefabricated wall panels according to claim 1, characterized in that: The bottom plate includes a steel backing plate and the friction member, and the friction member is welded onto the steel backing plate.

5. The multi-stage self-resetting friction damping connection device for prefabricated wall panels according to claim 1, characterized in that: The centers of the bottom plate, the limiting plate and the disc spring are provided with reserved holes for the bolts of the bolt connector to pass through, and the reserved holes are concentrically arranged.

6. The multi-stage self-resetting friction damping connection device for prefabricated wall panels according to claim 1, characterized in that: The bolt connector includes a bolt and a nut; by adjusting the pre-tightening force of the bolt, the energy consumption capacity and recovery capacity of the device are regulated.

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