Double-butterfly-shaped metal damper

Abstract

According to the technical scheme, the double-butterfly-shaped metal damper is characterized in that the double-butterfly-shaped metal damper comprises two connecting plates, and the two connecting plates are fixedly connected to a frame beam and a frame column respectively; a plurality of flange plates are arranged, each flange plate is of a plate-shaped structure, arc-shaped grooves are formed in the two sides of the middle of each flange plate, and the two ends of each flange plate are fixedly connected to the two connecting plates correspondingly; the flange plates and the webs are arranged, the two ends of each web are fixedly connected to the two connecting plates respectively, and the flange plates and the webs are arranged in a staggered mode in the vertical direction. Through the arrangement of the second flange plate, the out-of-plane rigidity of the damper can be enhanced, the damper is prevented from premature out-of-plane buckling, and the stability of the damper is improved; through the punching design of the web plate, the yield area of the damper can be increased, and the energy dissipation capacity of the damper is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building shock absorption, more particularly, it relates to a double-butterfly metal damper. BACKGROUND

[0002] Metal dampers dissipate seismic energy through plastic deformation of steel, have the advantages of simple structure and stable hysteresis performance, and are widely used in building structures. Among them, the dog-bone weakened metal damper weakens the flange of the I-beam, so that the damage of the structure is concentrated in the weakened position, and the energy dissipation capacity is improved through the plastic deformation of the weakened position.

[0003] Through research, it is found that the out-of-plane stiffness of the dog-bone metal damper flange weakening area decreases significantly, and the damper is prone to bending and torsional deformation near the weakened section. In addition, the dog-bone damper mainly relies on the plastic deformation of the steel in the weakened area to dissipate seismic energy, and the steel far from the weakened area has not even yielded, resulting in low material utilization and thus the damper not fully playing its energy dissipation performance. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a double-butterfly metal damper which can enhance the out-of-plane stiffness of the damper by the setting of the second flange plate, prevent the damper from prematurely buckling out-of-plane, and improve the stability of the damper.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double-butterfly metal damper, comprising a connecting plate, the connecting plate is provided with two and two connecting plates are respectively fixedly connected on the frame beam and the frame column;

[0006] A flange plate is provided, the flange plate is provided with a plurality of and the flange plate is provided as a plate structure with arc-shaped grooves on both sides of the middle, and the two ends of the flange plate are respectively fixedly connected on the two connecting plates;

[0007] And a web plate is provided, the web plate is provided with a plurality of, and the two ends of the web plate are respectively fixedly connected on the two connecting plates, and the plurality of flange plates and the plurality of web plates are staggered in the vertical direction.

[0008] The utility model is further provided as follows: the flange plate is provided with three, the web plate is provided with two, and one web plate is arranged between the two adjacent flange plates.

[0009] The utility model is further provided as follows: the flange plate is horizontally arranged, and the web plate is vertically arranged.

[0010] The utility model is further provided as follows: the two ends of the web plate are provided with arc-shaped grooves and an elliptical hole is arranged at the middle position.

[0011] The utility model further sets up: the flange board at top and bottom is set up as first flange board, the flange board in the middle is set up as second flange board, and the width of second flange board is less than the width of first flange board.

[0012] The utility model further sets up: the strength of flange board and web is lower than the strength of connecting plate.

[0013] The utility model further sets up: still include screw steel pipe, and each connecting plate corresponds multiple screw steel pipes, is provided with bolt hole respectively corresponding multiple screw steel pipes on connecting plate, the screw steel pipe is embedded on frame beam or frame column, and connecting plate is connected with corresponding screw steel pipe through the bolt of passing through bolt hole.

[0014] Compared with prior art, the utility model has the following beneficial effects:

[0015] 1, the utility model discloses a second flange board can enhance the out-of-plane stiffness of damper, prevent the out-of-plane buckling of damper prematurely, improve the stability of damper, so that damper can give full play to energy dissipation performance;

[0016] 2, the utility model discloses the hole in the both ends and middle part of web, can increase the yield area of web, improve the utilization of material, increase energy dissipation capacity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the schematic view of the use of example;

[0018] Figure 2 It is the schematic view of the overall structure of example;

[0019] Figure 3 It is the stress nephogram of dog bone type metal damper;

[0020] Figure 4 It is the stress nephogram of double butterfly metal damper;

[0021] Figure 5 It is the hysteresis curve of dog bone type metal damper;

[0022] Figure 6 It is the hysteresis curve of double butterfly metal damper.

[0023] In the drawing: 1, connecting plate;21, first flange board;22, second flange board;3, web;4, frame column;5, frame beam. DETAILED DESCRIPTION

[0024] In order to make the technical scheme of the present application better understood by the person skilled in the art, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings of the present application. Based on the embodiments in the present application, other similar embodiments obtained by the person skilled in the art without making creative efforts should all belong to the scope of protection of the present application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc. are only the directions of the drawings, therefore, the directional words used are used for illustration and not for limiting the present application.

[0025] The present application will be further described below in conjunction with the drawings and preferred embodiments.

[0026] Embodiment: a double-butterfly-shaped metal damper, referring to the drawings Figure 1 and the drawings Figure 2 , comprising a connecting plate 1, a flange plate and a web plate 3, the connecting plate 1 is provided with two and two connecting plates 1 are fixedly connected on the frame beam 5 and the frame column 4 respectively; the flange plate is provided with a plurality of and the flange plate is provided as a plate structure with arc-shaped grooves on both sides of the middle, both ends of the flange plate are fixedly connected on the two connecting plates 1 respectively; the web plate 3 is provided with a plurality of, both ends of the web plate 3 are fixedly connected on the two connecting plates 1 respectively, and the plurality of flange plates and the plurality of web plates 3 are staggered in the vertical direction.

[0027] Specifically, the flange plate is provided with three, the web plate 3 is provided with two, and one web plate 3 is arranged between the two adjacent flange plates. The flange plate is horizontally arranged, the web plate 3 is vertically arranged, and the length direction of the flange plate and the web plate 3 is perpendicular to the two connecting plates 1.

[0028] Specifically, both ends of the web plate 3 are provided with arc-shaped grooves and the middle position is provided with an elliptical hole. By opening holes at both ends and the middle of the web plate 3, the yield area of the web plate 3 can be increased, the utilization rate of the material can be improved, and the energy dissipation capacity can be increased.

[0029] Specifically, the flange plates located at the top and the bottom are provided as first flange plates 21, the flange plate located in the middle is provided as a second flange plate 22, and the width of the second flange plate 22 is smaller than the width of the first flange plate 21.

[0030] The setting of the second flange plate 22 can enhance the out-of-plane stiffness of the damper, prevent the damper from prematurely buckling out-of-plane, and improve the stability of the damper, so that the damper can fully play the energy dissipation performance.

[0031] The strength of the flange plate and the web plate 3 is lower than the strength of the connecting plate 1, so that the flange plate and the web plate 3 can deform plastically to dissipate seismic energy before other positions when an earthquake occurs.

[0032] Specifically, the embodiment further comprises threaded steel pipes, each connecting plate 1 corresponds to a plurality of threaded steel pipes, the connecting plate 1 is provided with bolt holes corresponding to the plurality of threaded steel pipes respectively, the threaded steel pipes are embedded on the frame beam 5 or the frame column 4, and the connecting plate 1 is connected with the corresponding threaded steel pipe through the bolt passing through the bolt hole.

[0033] The stress nephogram and the hysteresis curve of the conventional dog-bone metal damper and the double-butterfly metal damper in the embodiment are respectively obtained through numerical simulation.

[0034] Figure 3 The stress nephogram of the dog-bone metal damper, Figure 4 The stress nephogram of the double-butterfly metal damper, it can be known from the stress distribution in the figure that the yield area of the double-butterfly metal damper is obviously increased, and the utilization rate of the material is improved. The numbers marked in the figure are the maximum out-of-plane deformations of the webs, and it can be known through comparison that the out-of-plane deformation of the double-butterfly metal damper is only half of that of the dog-bone damper, and the out-of-plane stiffness is obviously improved.

[0035] Figure 5 The hysteresis curve of the dog-bone metal damper, Figure 6 The hysteresis curve of the double-butterfly metal damper, it can be known through comparison that the hysteresis curve of the double-butterfly metal damper is more full, and the energy dissipation capacity is stronger. The bearing capacity of the dog-bone damper obviously decreases under large displacement, and the bearing capacity of the double-butterfly metal damper does not decrease, which represents that the ductility of the double-butterfly metal damper is better.

[0036] The above only describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the present application are also considered to be within the protection scope of the present application.

Claims

1. A dual-butterfly metal damper characterized by: The connecting plate (1) is provided with two connecting plates (1) which are respectively fixedly connected to the frame beam (5) and the frame column (4); The flange plate is provided with a plurality of flange plates which are arranged in a plate structure with arc-shaped grooves on both sides of the middle part, and the two ends of the flange plate are respectively fixedly connected to the two connecting plates (1); And the web plate (3) is provided with a plurality of web plates (3), the two ends of the web plate (3) are respectively fixedly connected to the two connecting plates (1), and the plurality of flange plates and the plurality of web plates (3) are staggered in the vertical direction.

2. A dual-butterfly metal damper according to claim 1, characterized in that: The flange plate is provided with three flange plates, the web plate (3) is provided with two web plates (3), and one web plate (3) is arranged between the two adjacent flange plates.

3. A dual-butterfly metal damper according to claim 2, wherein: The flange plate is horizontally arranged, and the web plate (3) is vertically arranged.

4. A dual-butterfly metal damper according to claim 2, wherein: The two ends of the web plate (3) are provided with arc-shaped grooves, and the middle position is provided with an elliptical hole.

5. A dual-butterfly metal damper according to claim 4, wherein: The flange plates located at the top and the bottom are arranged as first flange plates (21), and the flange plates located in the middle are arranged as second flange plates (22), and the width of the second flange plate (22) is smaller than the width of the first flange plate (21).

6. A dual-butterfly metal damper as defined in claim 1, wherein: The strength of the flange plate and the web plate (3) is lower than the strength of the connecting plate (1).

7. A dual-butterfly metal damper as defined in claim 1, wherein: It also includes a threaded steel pipe, each connecting plate (1) corresponds to a plurality of threaded steel pipes, the connecting plate (1) is provided with a bolt hole corresponding to the plurality of threaded steel pipes, the threaded steel pipe is embedded in the frame beam (5) or the frame column (4), and the connecting plate (1) is connected with the corresponding threaded steel pipe through the bolt passing through the bolt hole.

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