Angle-adjustable fan-shaped composite damper

Abstract

The present invention relates to an angle-adjustable fan-shaped composite damper, comprising a composite damper body and a pair of connecting parts; the composite damper body comprises a fan-shaped viscoelastic damper body in a plane view, and a fan-shaped friction damper body is fixedly arranged on each side of the viscoelastic damper body; the viscoelastic damper body has viscoelastic arc-shaped outer plates and viscoelastic arc-shaped inner plates arranged alternately in the longitudinal section direction; the adjacent viscoelastic arc-shaped outer plates and viscoelastic arc-shaped inner plates are bonded by viscoelastic materials; a viscoelastic connecting vertical plate is arranged on each side of the viscoelastic damper body, wherein one viscoelastic connecting vertical plate is fixedly connected to the viscoelastic arc-shaped outer plate, and the other viscoelastic connecting vertical plate is fixedly connected to the viscoelastic arc-shaped inner plate; the friction damper body comprises a friction-adjusting extended flat plate, and the friction-adjusting extended flat plate is fixedly connected to the outer side of each corresponding viscoelastic connecting vertical plate. The overall angle of the damper of the present invention can be continuously adjusted, so that the damper has an efficient and stable energy dissipation capacity, and can prevent the damper from being damaged due to excessive deformation.

Description

Technical Field

[0001] The invention relates to a shock absorbing and energy consuming device, in particular to an angle-adjustable fan-shaped composite damper. Background Art

[0002] Traditional structural seismic technology improves seismic resistance by increasing the cross-sectional size of components and reinforcement, which often increases material consumption, long on-site construction time, and more wet work, which increases costs. Structural passive control technology reduces structural seismic response and improves structural safety by arranging shock-absorbing and energy-dissipating devices in the structure. Structural passive control technology has achieved fruitful results in both theory and application through research by civil engineering technicians. It has been widely used due to its many advantages such as simple structure, easy maintenance, low cost, and no need for external energy support.

[0003] Structural passive control technology has great advantages over traditional seismic technology and can significantly improve the safety of the main structure of the building and its auxiliary components under earthquakes. With the development of economy and technology, the design and construction of building structures have become diversified and complex. The structural form is more complex, and the structural beam-column nodes may not be completely vertical. The angles between beams and columns have various angles. At the same time, with the vigorous promotion and development of prefabricated buildings, more and more buildings adopt prefabricated structural systems, which also promotes the diversified development of building forms. Conventional corner dampers have fixed angles and can only be used in the vertical node area of ​​beams and columns.

[0004] The existing angle-adjustable corner dampers can only be adjusted at a fixed angle during the angle adjustment process, and cannot be adjusted seamlessly and continuously. Due to the rotational deformation characteristics of the corner damper, during the deformation process, the deformation of the outer side of the damper is significantly greater than the deformation of the inner side of the damper. Conventional corner dampers mostly use equal-thickness viscoelastic dampers. During the deformation of the damper, there is a risk of tensile damage to the outer viscoelastic material, and increasing the thickness of the viscoelastic material will reduce the energy dissipation capacity. Therefore, solving the problems of the inability to continuously adjust the angle of the fan-shaped damper, the simultaneous damage to different parts of the viscoelastic material during rotational deformation, and the inability to fully dissipate energy has always been a difficult engineering problem to solve. It is necessary to develop an angle-adjustable fan-shaped composite damper so that the damper angle can be continuously adjusted to meet the characteristics of the diversity of current building structures, and according to the rotational deformation characteristics of the damper, give full play to the energy dissipation capacity of the viscoelastic material during the rotational deformation of the damper. Summary of the invention

[0005] The purpose of the present invention is to provide an angle-adjustable fan-shaped composite damper, which not only can continuously adjust the overall angle of the damper, but also can make the damper have efficient and stable energy consumption capacity according to the rotational deformation characteristics of the damper, and can prevent the damper from being damaged by excessive deformation. At the same time, the various components of the damper are connected by bolts, which improves the safety of the structure in the case of extreme damage and is convenient for replacement after an earthquake.

[0006] The present invention adopts the following technical solutions:

[0007] An angle-adjustable fan-shaped composite damper, comprising a composite damping body and a pair of connecting members 1; the composite damping body comprises a viscoelastic damping body 7 which is fan-shaped in a plane view, and a fan-shaped friction damping body is fixedly arranged on both sides of the viscoelastic damping body 7; the connecting member 1 is fixed on the outside of the friction damping body, and is used for being fixedly connected to the corner wall; the viscoelastic damping body 7 has viscoelastic arc-shaped outer plates 6 and viscoelastic arc-shaped inner plates 10 which are arranged alternately in the longitudinal section direction; the adjacent viscoelastic arc-shaped outer plates 6 and viscoelastic arc-shaped inner plates 10 are bonded by viscoelastic materials 12; the viscoelastic arc-shaped outer plates 6, the viscoelastic arc-shaped inner plates 10, and the viscoelastic materials 12 are self-arc-shaped. The thickness gradually increases from the center to the outside; a viscoelastic connecting vertical plate 11 is arranged on each side of the viscoelastic damping body 7, wherein one viscoelastic connecting vertical plate 11 is fixedly connected to the viscoelastic arc-shaped outer plate 6, and the other viscoelastic connecting vertical plate 11 is fixedly connected to the viscoelastic arc-shaped inner plate 10; the friction damping body includes a friction adjustment extending flat plate 5, and the friction adjustment extending flat plate 5 is fixedly connected to the outer side of the respective corresponding viscoelastic connecting vertical plates 11; at least one transparent guide limiting arc groove 9 is arranged on the viscoelastic damping body, and a limiting locking bolt 8 is passed through the guide limiting arc groove 9, and the limiting locking bolt 8 can adjust the pre-pressure applied to the viscoelastic damping body by the tightening degree.

[0008] Preferably, a gap is reserved between the viscoelastic arc-shaped inner plate 10 and the viscoelastic connecting vertical plate 11 on the opposite side; meanwhile, a gap is also reserved between the viscoelastic arc-shaped outer plate 6 and the viscoelastic connecting vertical plate 11 on the opposite side.

[0009] Preferably, the arc center of the guide limiting arc groove 9 coincides with the center of the viscoelastic damping body.

[0010] Preferably, the centers of the fan-shaped viscoelastic arc-shaped outer plate 6 , the viscoelastic arc-shaped inner plate 10 and the viscoelastic material 12 coincide with each other.

[0011] Preferably, the friction adjustment extending plate 5 is provided with an adjustment arc groove b4, and the connecting plate extending plate 14 of the connecting member 1 is provided with an adjustment arc groove a2, and the friction adjustment extending plate 5 and the connecting plate extending plate 14 are provided with adjustment fixing bolts 3 through the adjustment arc grooves, and the applied prepressure is adjusted by adjusting the tightening degree of the fixing bolts 3.

[0012] Furthermore, a gap is left between the outer edge of the friction adjustment extended flat plate 5 and the vertical plate of the connecting member 1 .

[0013] Furthermore, the arc center of the adjusting arc groove a2 coincides with the arc center of the viscoelastic damping body.

[0014] The beneficial effects of the present invention are:

[0015] 1) By adjusting the sliding between the connecting piece and the friction-adjusting extended plate in the angle-adjustable fan-shaped composite damper, the initial angle of the composite damper can be continuously adjusted to meet different structural forms in the beam-column node area in various structures.

[0016] 2) During the rotational deformation process of the fan-shaped damper, the external displacement is significantly greater than the internal displacement. The energy dissipation capacity and deformation capacity of the viscoelastic damper are related to the thickness of the viscoelastic material. Increasing the thickness of the viscoelastic material can improve the damper's deformation capacity, but it will reduce its energy dissipation capacity. Conventional viscoelastic dampers have the risk of not fully exerting the inner energy dissipation capacity and the outer viscoelastic material being damaged by tension. The structural characteristics of the viscoelastic damping body, which is thin inside and thick outside, can improve the inner energy dissipation capacity and outer deformation capacity of the viscoelastic damping body according to the rotational deformation characteristics of the fan-shaped damper, and the energy dissipation capacity and safety of the angle-adjustable fan-shaped composite damper are improved.

[0017] 3) The viscoelastic damping body part of the angle-adjustable fan-shaped composite damper is provided with a guide limit arc groove and a limit locking bolt. The number of the guide limit arc groove and the limit locking bolt can be determined according to actual needs. The guide limit arc groove and the limit locking bolt can not only limit the deformation of the viscoelastic damping body so that it only undergoes rotational deformation, but also lock and limit the deformation of the viscoelastic damping body before the deformation of the viscoelastic material reaches the limit state of destruction by designing the length of the guide limit arc groove, thereby preventing the viscoelastic material from being destroyed and the damper from failing.

[0018] 4) The angle-adjustable fan-shaped composite damper connecting plate outwardly extending plate and the friction adjustment outwardly extending plate are both provided with transparent adjustment arc grooves and are penetrated with adjustment fixing bolts. The positions and quantities of the adjustment arc grooves and the adjustment fixing bolts are determined according to actual needs. By adjusting the arc grooves and the adjustment fixing bolts, not only the initial angle of the composite damper can be continuously adjusted, but also the overall deformation of the damper can be limited so that it only produces rotational deformation. After the initial angle adjustment of the composite damper is completed, the adjustment fixing bolts are tightened to apply pre-pressure, and the critical state of sliding between the connecting plate outwardly extending plate and the friction adjustment outwardly extending plate can be determined by the applied pre-pressure. When the deformation of the viscoelastic damper reaches the critical state and is locked, sliding occurs between the connecting plate outwardly extending plate and the friction adjustment outwardly extending plate, and the angle adjustment parts on both sides of the viscoelastic damper have the function of friction dampers and enter the working state, so that the overall damper of the composite damper continues to exert its energy dissipation capacity after the viscoelastic damper of the composite damper is locked.

[0019] 5) High-strength bolts are installed between the first connector, the viscoelastic arc outer plate, the viscoelastic arc inner plate and the second connector in the angle-adjustable fan-shaped composite damper to ensure the integrity of the various components of the composite damper. In the case of extreme and rare earthquakes, when structural components are damaged, it adds an extra line of defense for the building structure, which is of great significance in preventing the collapse of the building and further enhances the safety of the structure.

[0020] 6) The connecting parts and the viscoelastic damping body in the angle-adjustable fan-shaped composite damper are fixedly connected by high-strength bolts, which can be easily disassembled. All parts can be standardized and batch processed in the factory, and the inspection and replacement of the composite damper after the earthquake is very convenient.

[0021] 7) The present invention utilizes an angle-adjustable fan-shaped composite damper to solve the problems of fixed installation angle of conventional fan-shaped dampers, rotational deformation, and inconsistent energy consumption and destruction of viscoelastic materials. The angle-adjustable fan-shaped composite damper can meet the demand for fan-shaped dampers with different installation angles under the development trend of diversified building structure forms, and improves the energy consumption capacity of the fan-shaped composite damper and the safety of the composite damper under large deformation conditions, which can significantly improve the safety of the structure under earthquake action. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the structure of the angle-adjustable fan-shaped composite damper of Example 1;

[0023] Figure 2 is a schematic diagram of the angle-adjustable fan-shaped composite damper AA of Example 1;

[0024] Figure 3 is a schematic diagram of the angle-adjustable fan-shaped composite damper BB of Example 1;

[0025] Figure 4 Schematic diagram of the structure of the viscoelastic damping body of the angle-adjustable fan-shaped composite damper of Example 1;

[0026] Figure 5 1 is a schematic diagram of the structure of the angle-adjustable fan-shaped composite damper connection member of Example 1;

[0027] Figure 6 This is a schematic diagram of the 90° installation of the angle-adjustable fan-shaped composite damper of Example 1;

[0028] Figure 7 This is a schematic diagram of the obtuse-angle installation of the angle-adjustable fan-shaped composite damper of Example 1;

[0029] Figure 8 This is a schematic diagram of the acute-angle installation of the angle-adjustable fan-shaped composite damper of Example 1;

[0030] The corresponding component names represented by the numbers in the figure are: 1. Connecting piece; 2. Adjusting arc groove a; 3. Adjusting fixing bolt; 4. Adjusting arc groove b; 5. Friction adjusting extending plate; 6. Viscoelastic arc outer plate; 7. Viscoelastic damping body; 8. Limit locking bolt; 9. Guide limiting arc groove; 10. Viscoelastic arc inner plate; 11. Viscoelastic connecting vertical plate; 12. Viscoelastic material; 13. Connecting hole; 14. Connecting plate extending plate. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Embodiment 1:

[0033] like Figures 1 to 7 As shown, an angle-adjustable fan-shaped composite damper comprises two major parts: a composite damping body and a pair of connecting members 1;

[0034] See also Figure 1 The composite damping body comprises a viscoelastic damping body 7 which is fan-shaped in a plane view, and a fan-shaped friction damping body is fixedly arranged on both sides of the viscoelastic damping body 7; the connecting member 1 is fixed on the outside of the friction damping body and is used for fixed connection with the corner wall;

[0035] See also Figure 2 The viscoelastic damper 7 has viscoelastic arc outer plates 6 and viscoelastic arc inner plates 10 arranged alternately in the longitudinal section direction; the adjacent viscoelastic arc outer plates 6 and viscoelastic arc inner plates 10 are bonded by viscoelastic materials 12; the thickness of the viscoelastic arc outer plates 6, the viscoelastic arc inner plates 10 and the viscoelastic materials 12 gradually increases from the arc center to the outside; combined Figure 1A viscoelastic connecting vertical plate 11 is arranged on each side of the viscoelastic damping body 7, wherein one viscoelastic connecting vertical plate 11 is fixedly connected to the viscoelastic arc-shaped outer plate 6, and the other viscoelastic connecting vertical plate 11 is fixedly connected to the viscoelastic arc-shaped inner plate 10; the friction damping body includes a friction adjustment extending flat plate 5, and the friction adjustment extending flat plate 5 is fixedly connected to the outer side of each corresponding viscoelastic connecting vertical plate 11; at least one transparent guide limiting arc groove 9 is arranged on the viscoelastic damping body, and a limiting locking bolt 8 is passed through the guide limiting arc groove 9, and the limiting locking bolt 8 can adjust the pre-pressure applied to the viscoelastic damping body by the tightening degree.

[0036] Continue to see Figure 1 The viscoelastic arc-shaped outer plate 6, the viscoelastic arc-shaped inner plate 10 and the viscoelastic material 12 constitute the viscoelastic damping body of the composite damper. A gap is reserved between the outer edge of the viscoelastic arc-shaped inner plate 10 and the viscoelastic connecting vertical plate 11 fixed with the viscoelastic arc-shaped outer plate 6. The reserved gap is used to coordinate the deformation of the components during the rotational deformation of the composite damper.

[0037] See also Figure 1 The viscoelastic damping body is provided with a transparent guide limit arc groove 9 and a limit locking bolt 8. The number and position of the guide limit arc groove 9 and the limit locking bolt 8 are determined according to needs. In this embodiment, a total of 2 guide limit arc grooves 9 and 2 limit locking bolts 8 are provided, and the arc center of the guide limit arc groove 9 coincides with the center of the viscoelastic damping body.

[0038] See also Figure 1 The friction adjustment extended plate 5 is provided with an adjustment arc groove b4, the connecting plate extended plate 14 of the connector 1 is provided with an adjustment arc groove a2, the friction adjustment extended plate 5 and the connecting plate extended plate 14 are penetrated with an adjustment fixing bolt 3 through the adjustment arc groove, and a pre-pressure is applied through the adjustment fixing bolt 3. The arc center of the adjustment arc groove coincides with the arc center of the viscoelastic damping body, and the position and number of the adjustment arc groove are determined according to actual needs. In this embodiment, two adjustment arc grooves and two adjustment fixing bolts are respectively provided on both sides of the viscoelastic damping body 7.

[0039] Continue to see Figure 1 A gap is reserved between the outer edge of the friction adjustment extended flat plate 5 and the vertical plate of the connecting member 1, and the initial angle of the composite damper is adjusted through the reserved gap and a movement space is provided for the subsequent friction energy consumption process.

[0040] The specific number of layers of the viscoelastic arc outer plate 6, the viscoelastic arc inner plate 10 and the viscoelastic material 12 is determined according to actual needs. In this embodiment, the viscoelastic arc outer plate 6 is set to 3 layers, the viscoelastic arc inner plate 10 is set to 2 layers, and the viscoelastic material 12 is set to 4 layers.

[0041] The specific number of layers of the connecting plate extending flat plate and the friction adjusting extending flat plate is determined according to actual needs. In this embodiment, the connecting plate extending flat plate is set to 2 layers, and the friction adjusting extending flat plate is set to 1 layer.

[0042] The viscoelastic damper has the characteristic of being thin inside and thick outside, and has a trapezoidal cross section. The centers of the fan-shaped viscoelastic arc-shaped outer plate 6 , the viscoelastic arc-shaped inner plate 10 and the viscoelastic material 12 coincide with each other.

[0043] By loosening the adjusting fixing bolt 3 in the angle-adjustable fan-shaped composite damper, the initial angle of the composite damper is adjusted to the actual required angle, and then the fixing bolt 3 is tightened and pre-pressure is applied to the connecting plate protruding plate and the friction adjustment protruding plate.

[0044] When the composite damper undergoes rotational deformation, due to its deformation characteristics, the inner side of the viscoelastic damping body of the composite damper has a small deformation and the outer side has a large shape. The structural characteristics of the viscoelastic material in the viscoelastic damping body of the present invention, that is, the inner side is thin and the outer side is thick, enable the inner and outer viscoelastic materials in the viscoelastic damping body to fully exert their energy dissipation effects and effectively prevent the outer viscoelastic material from being tensilely damaged due to excessive deformation.

[0045] The viscoelastic damping body part of the angle-adjustable fan-shaped composite damper is provided with a guide limit arc groove and a limit locking bolt. When the deformation of the damper is small, the rotational deformation of the viscoelastic damping body is dominant, and the viscoelastic arc outer plate and the viscoelastic arc inner plate undergo relative rotational displacement, which produces a shearing effect on the viscoelastic material to consume energy. The guide limit arc groove and limit locking bolt provided on the viscoelastic damping body can not only limit the deformation of the damper so that it only undergoes rotational deformation, but also, by designing the length of the guide limit arc groove, when the structure is subjected to a large earthquake and causes a large deformation of the structure, the deformation of the viscoelastic damping body can be locked and limited before the deformation of the viscoelastic material reaches the limit state of destruction, thereby preventing the viscoelastic material from being destroyed and causing the damper to fail.

[0046] The connecting plate and the friction adjustment extending plate of the angle-adjustable fan-shaped composite damper are both provided with a transparent adjustment arc groove and are penetrated with an adjustment fixing bolt, which can not only limit the overall deformation of the damper so that it only produces rotational deformation, but also apply pre-pressure by tightening the adjusting fixing bolt. The applied pre-pressure can determine the critical state of sliding between the connecting plate extending plate and the friction adjustment extending plate. When the angle-adjustable fan-shaped composite damper undergoes large deformation, the viscoelastic damping body is deformed and locked. When the external force applied to the damper continues to increase, sliding occurs between the connecting plate extending plates and the friction adjustment extending plates on both sides of the viscoelastic damping body. At this time, the angle adjustment part of the components is converted into a friction damper and enters a working state, providing energy dissipation capacity for the overall damper after the viscoelastic damping body is locked when the composite damper undergoes large deformation.

[0047] High-strength bolts are installed between the connectors, viscoelastic arc outer plates, and viscoelastic arc inner plates in the angle-adjustable fan-shaped composite damper to ensure the integrity of the various components of the composite damper. When a building is severely damaged by an extremely rare earthquake, the structural beam-column node area is seriously damaged. The overall structural characteristics of the composite damper add a line of defense to the structure, which is of great significance in preventing the collapse of the building and further strengthens the safety of the structure (especially the prefabricated building structure) under earthquake action.

[0048] The above are preferred embodiments of the present invention. A person skilled in the art may make various changes or improvements on this basis. Without departing from the general concept of the present invention, these changes or improvements should fall within the scope of protection claimed by the present invention.

Claims

1. An angle-adjustable fan-shaped composite damper, characterized in that: It comprises a composite damping body and a pair of connecting parts (1); The composite damping body comprises a viscoelastic damping body (7) which is fan-shaped in a plane view, and a fan-shaped adjustable friction damping body is fixedly arranged on each side of the viscoelastic damping body (7); The connecting member (1) is fixed on the outside of the friction damping body and is used for fixed connection with the corner wall; The viscoelastic damping body (7) has viscoelastic arc-shaped outer plates (6) and viscoelastic arc-shaped inner plates (10) arranged alternately in the longitudinal section direction; the adjacent viscoelastic arc-shaped outer plates (6) and viscoelastic arc-shaped inner plates (10) are bonded by viscoelastic materials (12); the thickness of the viscoelastic arc-shaped outer plates (6), the viscoelastic arc-shaped inner plates (10) and the viscoelastic materials (12) gradually increases from the arc center to the outside; a viscoelastic connecting vertical plate (11) is provided on each side of the viscoelastic damping body (7), wherein one viscoelastic connecting vertical plate (11) is fixedly connected to the viscoelastic arc-shaped outer plate (6), and the other viscoelastic connecting vertical plate (11) is fixedly connected to the viscoelastic arc-shaped inner plate (10); The friction damping body comprises a friction adjustment outwardly extending flat plate (5), and the friction adjustment outwardly extending flat plate (5) is fixedly connected to the outer sides of the corresponding viscoelastic connection vertical plates (11); At least one transparent guide limit arc groove (9) is provided on the viscoelastic damping body, a limit locking bolt (8) is passed through the guide limit arc groove (9), and the limit locking bolt (8) can adjust the pre-pressure applied to the viscoelastic damping body by the degree of tightening; A gap is reserved between the viscoelastic arc-shaped inner plate (10) and the viscoelastic connecting vertical plate (11) on the opposite side; at the same time, a gap is also reserved between the viscoelastic arc-shaped outer plate (6) and the viscoelastic connecting vertical plate (11) on the opposite side; The arc center of the guide limit arc groove (9) coincides with the center of the viscoelastic damping body; The friction adjustment extended plate (5) is provided with an adjustment arc groove b (4), and the connecting plate extended plate (14) of the connecting member (1) is provided with an adjustment arc groove a (2). Adjustment fixing bolts (3) are passed through the friction adjustment extended plate (5) and the connecting plate extended plate (14) through the adjustment arc groove, and the applied preload is adjusted by adjusting the tightening degree of the fixing bolts (3).

2. The angle-adjustable fan-shaped composite damper according to claim 1, characterized in that: The centers of the fan-shaped viscoelastic arc-shaped outer plate (6), the viscoelastic arc-shaped inner plate (10) and the viscoelastic material (12) coincide with each other.

3. The angle-adjustable fan-shaped composite damper according to claim 1, characterized in that: A gap is left between the outer edge of the friction-adjusting extended flat plate (5) and the vertical plate of the connecting member (1).

4. The angle-adjustable fan-shaped composite damper according to claim 1, characterized in that: The arc center of the adjusting arc groove a (2) coincides with the arc center of the viscoelastic damping body.

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