Steel carbon fiber composite metal damper

Abstract

The utility model discloses a steel carbon fiber composite metal damper, which comprises damper end plates, rigid stiffening ribs and an energy consumption core plate adhered with carbon fibers, and is connected with a building structure through the damper end plates. An energy consumption core plate pasted with carbon fibers is connected between the two damper end plates, and the rigid stiffening ribs are fixed to the upper end plate and the lower end plate and tightly attached to the carbon fibers on the outer side of the energy consumption core plate. The combined action of the rigid stiffening ribs and the carbon fibers ensures that the energy consumption core plate does not generate out-of-plane buckling and local buckling during energy consumption. In the steel and carbon fiber composite metal damper, the rigid stiffening ribs are welded on the damper end plates, so that the rigid stiffening ribs are prevented from being directly welded with the energy consumption core plate, the damage of welding residual stress to the ductility performance of the core plate is avoided, and the stress concentration phenomenon at the welding position of the core plate and the rigid stiffening ribs is also avoided; and meanwhile, the pasted carbon fibers not only restrain the core plate and participate in energy consumption, but also effectively prevent the core plate from being directly contacted with the external environment to generate corrosion and the like, so that the durability of the damper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, and specifically relates to a steel-carbon fiber composite metal damper. Background Art

[0002] A damper is a component that attenuates the vibration of an object through energy dissipation in different forms such as plastic deformation, viscosity, and friction. A damper installed on a building structure system can provide damping, reduce the effect of earthquakes on the building structure, and thus protect the main structure of the building. There are many types of dampers, including metal dampers, oil dampers, viscous dampers, air dampers, and friction dampers. In most existing metal dampers, the rigid stiffening ribs are generally directly welded to the energy-dissipating core plate in the damper, which causes welding damage to the core plate during the welding process of the rigid stiffening ribs, and generates residual stress inside the core plate at the weld; in addition, during the operation of the damper, stress concentration will form at the connection between the stiffening ribs and the core plate. The above-mentioned adverse factors lead to a decrease in the ductility of the metal damper and a weakening of the hysteretic energy dissipation capacity. Under the action of an earthquake, the damping effect of the metal damper on the building structure decays rapidly. For this reason, a steel-carbon fiber composite metal damper is proposed. Utility Model Content

[0003] The utility model aims to provide a steel-carbon fiber composite metal damper to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel-carbon fiber composite metal damper, including damper end plates, rigid stiffening ribs, and an energy-absorbing core plate with carbon fibers pasted thereon, which is connected to the building structure through the damper end plates. Under the action of an earthquake, it plays a damping and protective role on the building structure. An energy-absorbing core plate with carbon fibers pasted thereon is connected between the two damper end plates, and the rigid stiffening ribs are fixed on the upper and lower end plates and fit tightly with the carbon fibers on the outer side of the energy-absorbing core plate. The combined action of the rigid stiffening ribs and the carbon fibers ensures that the energy-absorbing core plate does not undergo out-of-plane buckling and local buckling when absorbing energy. In this steel carbon fiber composite metal damper, the rigid stiffening ribs are welded on the damper end plate, avoiding direct welding between the rigid stiffening ribs and the energy-absorbing core plate, which not only avoids the damage of welding residual stress to the ductility performance of the energy-absorbing core plate, but also avoids the stress concentration phenomenon at the welding point between the core plate and the rigid stiffening ribs; at the same time, the pasted carbon fiber can not only constrain the core plate and participate in energy dissipation, but also effectively prevent the core plate from directly contacting the external environment to produce rust, etc., thus extending the service life of the damper. It not only solves the problem that the welding of the rigid stiffening ribs and the energy-absorbing core plate causes the energy-absorbing core plate material to become brittle and the ductility to decrease, but also improves the durability of the damper, and ensures the overall hysteresis energy dissipation capacity of the steel carbon fiber composite metal damper;

[0005] A carbon fiber layer is attached to the outer wall of the energy-absorbing core plate, and the carbon fiber layer is attached to the two sides of the energy-absorbing core plate. The carbon fiber is mainly composed of carbon elements, and has the characteristics of high temperature resistance, friction resistance, heat conduction and corrosion resistance. The carbon fiber is fibrous in appearance, soft, and can be processed into various fabrics. Since its graphite microcrystalline structure is preferentially oriented along the fiber axis, it has high strength and modulus along the fiber axis. The provision of the carbon fiber layer can improve the ductility of the energy-absorbing core plate. The carbon fiber layer can decompose the local buckling stress on the energy-absorbing core plate onto it, resist the local buckling of the energy-absorbing core plate, and improve the ductility of the energy-absorbing core plate, thereby improving the energy dissipation capacity of the steel-carbon fiber composite metal damper; at the same time, the wrapping of the core plate by the carbon fiber layer avoids rust caused by direct contact between the core plate and the external environment, thereby improving the durability of the damper;

[0006] The rigid stiffening ribs include transverse stiffening ribs and longitudinal stiffening ribs, and the transverse stiffening ribs and longitudinal stiffening ribs form a grid-like rigid stiffening rib. The upper end of the rigid stiffening rib located on the upper side is fixedly connected to the damper end plate located on the upper side, and the lower end of the rigid stiffening rib located on the lower side is fixedly connected to the damper end plate located on the lower side. The grid-like rigid stiffening ribs enable the steel-carbon fiber composite metal damper to have good out-of-plane constraints. Under the action of an earthquake, the rigid stiffening constraint of the stiffening ribs can effectively ensure that the energy-absorbing core plate dissipates hysteresis energy in the plane without out-of-plane buckling.

[0007] Preferably, deformation seams are provided between adjacent rigid stiffening ribs, and the deformation seams provide deformation space for shear deformation of the core plate, thereby preventing the rigid stiffening ribs from colliding upward or downward.

[0008] Preferably, the number N of the energy-absorbing core plates is N≥1, the upper end and the lower end of the energy-absorbing core plate are fixedly connected to the damper end plates located on the upper and lower sides respectively, the rigid stiffening ribs are tightly attached to the outer carbon fibers of the energy-absorbing core plate, the energy-absorbing core plate is the inner layer of the steel-carbon fiber composite metal damper, and the rigid stiffening ribs are the outer layer of the steel-carbon fiber composite metal damper. Such a sandwich structure arrangement ensures hysteresis energy dissipation of the energy-absorbing core plate without out-of-plane buckling and local buckling, so that the steel-carbon fiber composite metal damper has a better damping effect.

[0009] Preferably, the damper end plate is a metal plate, and the rigid stiffening rib is a metal stiffening plate.

[0010] Preferably, the rigid stiffening ribs are closely attached to the carbon fiber layer on the outer side of the energy dissipation core plate without being bonded, so as to ensure that the energy dissipation core plate is not affected by the stiffening ribs when it undergoes in-plane shear deformation and energy dissipation.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] An energy-absorbing core plate with carbon fiber attached is connected between the two damper end plates, and the rigid stiffening ribs are fixed on the upper and lower end plates and are tightly fitted with the carbon fibers on the outer side of the energy-absorbing core plate. The combined effect of the rigid stiffening ribs and carbon fibers ensures that the energy-absorbing core plate does not buckle out of plane or locally when absorbing energy. In this steel carbon fiber composite metal damper, the rigid stiffening ribs are welded on the damper end plates, avoiding direct welding between the rigid stiffening ribs and the energy-absorbing core plate, which not only avoids the damage of the welding residual stress to the ductility performance of the energy-absorbing core plate, but also avoids the stress concentration phenomenon at the welding point between the core plate and the rigid stiffening ribs; at the same time, the attached carbon fiber can not only constrain the core plate and participate in energy dissipation, but also effectively prevent the core plate from directly contacting the external environment to produce rust, etc., thus extending the service life of the damper. It not only solves the problem that the welding of the rigid stiffening ribs and the energy-absorbing core plate causes the energy-absorbing core plate material to become brittle and the ductility to decrease, but also improves the durability of the damper, and ensures the overall hysteresis energy dissipation capacity of the steel carbon fiber composite metal damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main structure front view of the utility model;

[0014] Figure 2 This is a side view of the main structure of the utility model;

[0015] Figure 3 For this utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0016] In the figure: 1-damper end plate, 2-energy dissipation core plate, 201-carbon fiber layer, 3-rigid stiffening rib, 301-transverse stiffening rib, 302-longitudinal stiffening rib, 4-deformation joint. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example:

[0019] See also Figure 1-3The utility model provides the following technical solutions: A steel-carbon fiber composite metal damper, comprising a damper end plate 1, a rigid stiffening rib 3, and an energy-absorbing core plate 2 with carbon fibers pasted thereon, which is connected to the building structure through the damper end plate 1. Under the action of an earthquake, it plays a damping protection role for the building structure. An energy-absorbing core plate 2 wrapped with carbon fibers is connected between the two damper end plates 1, and the rigid stiffening ribs 3 are fixed on the upper and lower end plates and fit tightly with the carbon fibers on the outer side of the energy-absorbing core plate 2. The combined action of the rigid stiffening ribs 3 and the carbon fibers ensures that the energy-absorbing core plate 2 does not undergo out-of-plane buckling and local buckling when absorbing energy. In this steel carbon fiber composite metal damper, the rigid stiffening rib 3 is welded on the damper end plate 1, avoiding direct welding between the rigid stiffening rib 3 and the energy dissipation core plate 2. At the same time, the energy dissipation core plate is wrapped and constrained with carbon fiber, which not only avoids the damage of welding residual stress to the ductility performance of the energy dissipation core plate 2, but also avoids the stress concentration phenomenon at the welding point between the inner core plate and the rigid stiffening rib 3. At the same time, it effectively prevents the inner core plate from rusting due to contact with air, etc., and prolongs the service life of the damper. It not only solves the problem that the welding of the rigid stiffening rib 3 and the energy dissipation core plate 2 causes the energy dissipation core plate material to become brittle and the ductility to decrease, but also improves the durability of the damper and ensures the overall hysteresis energy dissipation capacity of the steel carbon fiber composite metal damper.

[0020] Specifically, a carbon fiber layer 201 is attached to the outer wall of the energy-consuming core plate 2, and the carbon fiber layer 201 is attached to the two sides of the energy-consuming core plate 2. The carbon fiber is mainly composed of carbon elements, and has the characteristics of high temperature resistance, friction resistance, heat conduction and corrosion resistance. The carbon fiber is fibrous, soft, and can be processed into various fabrics. Because its graphite microcrystalline structure is preferentially oriented along the fiber axis, it has high strength and modulus along the fiber axis. The setting of the carbon fiber layer 201 can participate in energy consumption and improve the ductility of the energy-consuming core plate 2. The carbon fiber layer 201 can decompose the local buckling stress on the energy-consuming core plate 2 onto it, resist the local buckling of the energy-consuming core plate 2, and improve the ductility of the energy-consuming core plate 2, thereby improving the energy consumption capacity of the steel-carbon fiber composite metal damper; at the same time, the wrapping of the core plate by the carbon fiber layer 201 avoids rusting caused by the contact between the core plate and the air, and improves the durability of the damper.

[0021] Specifically, the rigid stiffening ribs 3 include transverse stiffening ribs 301 and longitudinal stiffening ribs 302. The transverse stiffening ribs 301 and the longitudinal stiffening ribs 302 form a grid-like rigid stiffening rib 3. The upper end of the rigid stiffening rib 3 located on the upper side is fixedly connected to the damper end plate 1 located on the upper side, and the lower end of the rigid stiffening rib 3 located on the lower side is fixedly connected to the damper end plate 1 located on the lower side. The grid-like rigid stiffening ribs 3 enable the steel-carbon fiber composite metal damper to have good out-of-plane constraints. Under the action of an earthquake, the rigid stiffening constraint of the stiffening ribs can effectively ensure that the energy-absorbing core plate 2 dissipates hysteresis energy in the plane without out-of-plane buckling.

[0022] Specifically, deformation seams 4 are provided between adjacent rigid stiffening ribs 3 , and the deformation seams 4 provide deformation space for the shear deformation of the energy-absorbing core plate 2 , thereby preventing the rigid stiffening ribs 3 from colliding upward or downward.

[0023] Specifically, the energy-absorbing core plate 2 is provided with N, N≥1, the upper end and the lower end of the energy-absorbing core plate 2 are respectively fixedly connected to the damper end plates 1 located on the upper and lower sides, the rigid stiffening ribs 3 are tightly attached to the carbon fiber layer 201 on the outer side of the energy-absorbing core plate 2, the energy-absorbing core plate 2 is the inner layer of the steel-carbon fiber composite metal damper, and the rigid stiffening ribs 3 are the outer layer of the steel-carbon fiber composite metal damper. Such a sandwich structure setting ensures hysteresis energy dissipation of the energy-absorbing core plate 2 without out-of-plane buckling and local buckling, so that the steel-carbon fiber composite metal damper has a better damping effect.

[0024] Specifically, the damper end plate 1 is a metal plate, and the rigid stiffening rib 3 is a metal stiffening plate.

[0025] Specifically, the rigid stiffening ribs 3 are closely attached to the carbon fiber layer 201 outside the energy dissipation core plate 2 without being bonded, so as to ensure that the energy dissipation core plate is not affected by the stiffening ribs when it undergoes in-plane shear deformation and energy dissipation.

[0026] Working principle: An energy-absorbing core plate 2 with carbon fiber pasted is connected between the two damper end plates 1, and the rigid stiffening ribs 3 are fixed on the upper and lower end plates, and are tightly fitted with the carbon fiber layer 201 on the outside of the energy-absorbing core plate 2. The combined effect of the rigid stiffening ribs 3 and the carbon fiber layer 201 ensures that the energy-absorbing core plate 2 does not undergo out-of-plane buckling and local buckling when absorbing energy. In Bensteel's carbon fiber composite metal damper, the rigid stiffening ribs 3 are welded to the damper end plates 1, avoiding direct welding between the rigid stiffening ribs 3 and the energy-absorbing core plate 2, which not only avoids the damage of the welding residual stress to the ductility of the energy-absorbing core plate 2, but also avoids the stress concentration phenomenon at the welding point between the inner core plate and the rigid stiffening ribs 3; at the same time, the carbon fiber layer 201 is pasted to constrain the energy-absorbing inner core plate and participate in energy consumption, and it also effectively prevents the inner core plate from directly contacting the external environment to produce rust, etc., thereby extending the service life of the damper. It not only solves the problem that the welding of the rigid stiffening rib 3 and the energy dissipation core plate 2 causes the energy dissipation core plate material to become brittle and the ductility to decrease, but also improves the durability of the damper and ensures the overall hysteresis energy dissipation capacity of the steel-carbon fiber composite metal damper.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steel-carbon fiber composite metal damper, characterized in that: The invention comprises symmetrically arranged damper end plates (1), an energy-absorbing core plate (2) being connected between the two damper end plates (1), rigid stiffening ribs (3) being welded between the two damper end plates (1) and on both sides of the energy-absorbing core plate (2), the rigid stiffening ribs (3) being bonded to the energy-absorbing core plate (2) bonded with carbon fiber, a carbon fiber layer (201) being bonded to the outer side wall of the energy-absorbing core plate (2), the rigid stiffening ribs (3) comprising transverse stiffening ribs (301) and longitudinal stiffening ribs ( 302), the transverse stiffening ribs (301) and the longitudinal stiffening ribs (302) form a grid-like rigid stiffening rib (3), the upper end of the rigid stiffening rib (3) located on the upper side is fixedly connected to the damper end plate (1) located on the upper side, and the lower end of the rigid stiffening rib (3) located on the lower side is fixedly connected to the damper end plate (1) located on the lower side, and the combined action of the rigid stiffening rib (3) and the carbon fiber ensures that the energy-absorbing core plate (2) does not undergo out-of-plane buckling and local buckling when absorbing energy.

2. A steel-carbon fiber composite metal damper according to claim 1, characterized in that: Deformation seams (4) are provided between adjacent rigid stiffening ribs (3).

3. A steel-carbon fiber composite metal damper according to any one of claims 1-2, characterized in that: The number of the energy-absorbing core plates (2) is N, where N≥1. The upper ends and lower ends of the two energy-absorbing core plates (2) are fixedly connected to the damper end plates (1) located on the upper and lower sides, respectively. The rigid stiffening ribs (3) are attached to the outer side walls of the energy-absorbing core plates (2).

4. The steel-carbon fiber composite metal damper according to claim 3, characterized in that: The damper end plate (1) is a metal plate, and the rigid stiffening rib (3) is a metal stiffening plate.

5. The steel-carbon fiber composite metal damper according to claim 2, characterized in that: The rigid stiffening ribs (3) are in close contact with the outer surface of the carbon fibers of the energy-absorbing core plate (2).

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