An omnidirectional metal damper

Abstract

The present invention provides an omnidirectional metal damper, comprising: an upper connecting plate, a lower connecting plate, a shear energy dissipation unit and a cylindrical vertical pressure-bearing unit; the shear energy dissipation unit is arranged in the middle of the omnidirectional metal damper, the bottom of the shear energy dissipation unit is connected to the lower connecting plate, and the top is connected to the upper connecting plate; the cylindrical vertical pressure-bearing unit is concentrically sleeved on the outside of the shear energy dissipation unit; the cylindrical vertical pressure-bearing unit comprises: an upper pressure-bearing column, a lower pressure-bearing column and a plurality of metal balls; the bottom of the upper pressure-bearing column and the top of the lower pressure-bearing column are both provided with an annular groove for the movement of the plurality of metal balls; the plurality of metal balls are arranged in the annular groove; the bottom of the lower pressure-bearing column is connected to the lower connecting plate, and the top is abutted against the bottom of the metal ball; the top of the upper pressure-bearing column is connected to the upper connecting plate, and the bottom is abutted against the top of the metal ball. The application of the present invention can better play the energy dissipation role of the damper.

Description

Technical Field

[0001] The present application relates to the technical field of earthquake resistance and shock absorption in civil engineering, and in particular to an omnidirectional metal damper. Background Art

[0002] Metal energy dissipation dampers are made of various metal materials. They use the plastic deformation of metal materials when they yield to dissipate energy. They can provide additional rigidity to the structure. They generally play a supporting role in small earthquakes and play an energy dissipation role in large earthquakes. Metal energy dissipation dampers have been widely used in the shock absorption design of building structures because of their simple structure, clear mechanical mechanism and excellent low-cycle fatigue performance.

[0003] Earthquake is a complex multi-dimensional movement, and the seismic waves it generates have complex and diverse characteristics in all directions. Therefore, when an earthquake occurs, the building structure will also move in all directions on the horizontal plane. At present, most of the metal energy dissipation dampers used in building structures studied by people only focus on one-way or two-way shock absorption. When using metal energy dissipation dampers in building structures, it is generally necessary to consider shock absorption design issues and spatial layout issues in multiple directions. However, the above-mentioned one-way or two-way metal energy dissipation dampers cannot meet the shock absorption of building structures under multi-dimensional vibration during earthquakes. Therefore, it is of great engineering significance to develop an omnidirectional metal energy dissipation damper. Summary of the invention

[0004] In view of this, the present invention provides an omnidirectional metal damper, so that the energy dissipation function of the damper can be better exerted.

[0005] The technical solution of the present invention is specifically achieved as follows:

[0006] An omnidirectional metal damper, comprising: an upper connecting plate, a lower connecting plate, a shear energy dissipation unit and a cylindrical vertical pressure-bearing unit;

[0007] The shear energy dissipation unit is arranged in the middle of the omnidirectional metal damper, the bottom of the shear energy dissipation unit is connected to the lower connecting plate, and the top is connected to the upper connecting plate;

[0008] The cylindrical vertical pressure-bearing unit is concentrically sleeved on the outside of the shear energy dissipation unit;

[0009] The cylindrical vertical pressure-bearing unit comprises: an upper pressure-bearing column, a lower pressure-bearing column and a plurality of metal balls;

[0010] The bottom of the upper pressure-bearing column and the top of the lower pressure-bearing column are both provided with an annular groove for the movement of the plurality of metal balls; the plurality of metal balls are arranged in the annular groove;

[0011] The bottom of the lower pressure column is connected to the lower connecting plate, and the top is in contact with the bottom of the metal ball;

[0012] The top of the upper pressure-bearing column is connected to the upper connecting plate, and the bottom thereof is abutted against the top of the metal ball.

[0013] Preferably, the shear energy dissipation unit comprises: a steel core column, an annularly constrained steel pipe and a plurality of radial shear stress-bearing steel plates;

[0014] The steel core column is arranged in the middle of the omnidirectional metal damper.

[0015] The annular restraining steel pipe is concentrically sleeved on the outside of the steel core column;

[0016] The plurality of radial shear stress-bearing steel plates are evenly distributed between the steel core column and the annular restraint steel pipe, and both sides of each radial shear stress-bearing steel plate are respectively connected to the steel core column and the annular restraint steel pipe;

[0017] The bottoms of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the lower connecting plate, and the tops of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the upper connecting plate.

[0018] Preferably, the upper pressure-bearing column and the lower pressure-bearing column both include: a vertical pressure-bearing outer steel pipe, a vertical pressure-bearing inner steel pipe and vertical pressure-bearing concrete;

[0019] The vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe are concentrically arranged;

[0020] The vertical pressure-bearing outer steel pipe is sleeved on the outer side of the vertical pressure-bearing inner steel pipe;

[0021] The space between the vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe is filled with vertical pressure-bearing concrete;

[0022] An annular groove is provided on the vertical pressure-bearing concrete at the bottom of the upper pressure-bearing column;

[0023] An annular groove is provided on the vertical pressure-bearing concrete at the top of the lower pressure-bearing column.

[0024] Preferably, the omnidirectional metal damper further comprises: a plurality of stiffening ribs;

[0025] The bottom of each stiffening rib is connected to the upper connecting plate or the lower connecting plate, and one side of each stiffening rib is connected to the shear energy dissipation unit.

[0026] Preferably, the upper connecting plate and the lower connecting plate are connected as a whole with the shear energy dissipation unit and the cylindrical vertical pressure-bearing unit by welding or bolting.

[0027] Preferably, the radial shear stress-bearing steel plate is made of low-yield point steel with a yield strength between 100 MPa and 225 MPa.

[0028] Preferably, the steel core column and the annular constraint steel pipe are made of steel with a yield strength of not less than 235 MPa.

[0029] As can be seen from the above, in the omnidirectional metal damper of the present invention, since a shear energy dissipation unit is arranged in the middle of the omnidirectional metal damper, and a cylindrical vertical pressure-bearing unit is sleeved on the outside of the shear energy dissipation unit, an annular groove is arranged in the middle of the cylindrical vertical pressure-bearing unit, and a plurality of metal balls are arranged in the annular groove, the annular groove can control the displacement of the metal balls in the horizontal direction. Therefore, when the building structure connected to the omnidirectional metal damper is displaced, the shear energy dissipation unit can withstand the shear force, while the cylindrical vertical pressure-bearing unit sleeved on the outside of the shear energy dissipation unit can withstand the vertical pressure and effectively transmit the vertical pressure through the metal balls, and can also realize omnidirectional sliding of the plane to share the horizontal force exerted on the shear energy dissipation unit. Therefore, in the process of the omnidirectional metal damper being subjected to force in any direction on the plane, the problem of premature loss of energy dissipation capacity due to the shear energy dissipation unit being subjected to vertical pressure can be avoided, thereby better exerting the energy dissipation function of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the three-dimensional structure of the omnidirectional metal damper in an embodiment of the present invention.

[0031] Figure 2 It is a three-dimensional cross-sectional schematic diagram of an omnidirectional metal damper in an embodiment of the present invention.

[0032] Figure 3 It is a schematic front elevation diagram of an omnidirectional metal damper in an embodiment of the present invention.

[0033] Figure 4 It is a vertical cross-sectional plan view of the omnidirectional metal damper in an embodiment of the present invention.

[0034] Figure 5 It is a vertical cross-sectional stereoscopic view of the omnidirectional metal damper in an embodiment of the present invention.

[0035] Figure 6 It is a cross-sectional plan view of the omnidirectional metal damper in an embodiment of the present invention.

[0036] Figure 7 It is a cross-sectional stereoscopic view of the omnidirectional metal damper in the embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] like Figure 1 to Figure 7 As shown, the omnidirectional metal damper in the embodiment of the present invention comprises: an upper connecting plate 11, a lower connecting plate 12, a shear energy dissipation unit 13 and a cylindrical vertical pressure-bearing unit 14;

[0039] The shear energy dissipation unit 13 is arranged in the middle of the omnidirectional metal damper, the bottom of the shear energy dissipation unit 13 is connected to the lower connecting plate 12, and the top is connected to the upper connecting plate 11;

[0040] The cylindrical vertical pressure-bearing unit 14 is concentrically sleeved on the outer side of the shear energy dissipation unit 13;

[0041] The cylindrical vertical pressure-bearing unit 14 includes: an upper pressure-bearing column 41, a lower pressure-bearing column 42 and a plurality of metal balls 43;

[0042] The bottom of the upper pressure column 41 and the top of the lower pressure column 42 are both provided with an annular groove 44 for the plurality of metal balls to move; the plurality of metal balls 43 are arranged in the annular groove 44;

[0043] The bottom of the lower pressure column 42 is connected to the lower connecting plate 12, and the top is in contact with the bottom of the metal ball 43;

[0044] The top of the upper pressure column 41 is connected to the upper connecting plate 11 , and the bottom thereof abuts against the top of the metal ball 43 .

[0045] When the above-mentioned omnidirectional metal damper in the present invention is used, the upper connecting plate and the lower connecting plate can be connected to the building structure respectively.

[0046] In the omnidirectional metal damper of the present invention, a shear energy dissipation unit is arranged in the middle thereof, and a cylindrical vertical pressure-bearing unit is sleeved on the outside of the shear energy dissipation unit, an annular groove is arranged in the middle of the cylindrical vertical pressure-bearing unit, and a plurality of metal balls are arranged in the annular groove, and the annular groove can control the displacement of the metal balls in the horizontal direction. Therefore, when the building structure connected to the omnidirectional metal damper is displaced, the shear energy dissipation unit can withstand the shear force, and the cylindrical vertical pressure-bearing unit sleeved on the outside of the shear energy dissipation unit can withstand the vertical pressure and effectively transmit the vertical pressure through the metal balls, and can also realize omnidirectional sliding of the plane to share the horizontal force exerted on the shear energy dissipation unit. Therefore, in the process of the omnidirectional metal damper being subjected to force in any direction on the plane, the problem of premature loss of energy dissipation capacity due to the shear energy dissipation unit being subjected to vertical pressure can be avoided, thereby better exerting the energy dissipation function of the damper.

[0047] In addition, in the technical solution of the present invention, a variety of implementation methods can be used to implement the above-mentioned shear energy dissipation unit. The technical solution of the present invention will be described in detail below by taking one of the implementation methods as an example.

[0048] For example, preferably, in a specific embodiment of the present invention, the shear energy dissipation unit 13 includes: a steel core column 31, an annular constraint steel pipe 32 and a plurality of radial shear force-bearing steel plates 33;

[0049] The steel core column is arranged in the middle of the omnidirectional metal damper.

[0050] The annular restraining steel pipe is concentrically sleeved on the outside of the steel core column;

[0051] The plurality of radial shear stress-bearing steel plates are evenly distributed between the steel core column and the annular restraint steel pipe, and both sides of each radial shear stress-bearing steel plate are respectively connected to the steel core column and the annular restraint steel pipe;

[0052] The bottoms of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the lower connecting plate, and the tops of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the upper connecting plate.

[0053] In the above-mentioned shear energy dissipation unit, the steel core column, the annular constrained steel pipe and the plurality of radial shear force-bearing steel plates can ensure consistency in vertical strain, so that when the building structure connected to the omnidirectional metal damper is displaced, stress concentration will not occur at both ends of the shear energy dissipation unit, which is greatly beneficial to energy dissipation.

[0054] In addition, in the technical solution of the present invention, a variety of implementation methods can be used to implement the above cylindrical vertical pressure-bearing unit. The technical solution of the present invention will be described in detail below by taking one of the implementation methods as an example.

[0055] For example, preferably, in a specific embodiment of the present invention, the upper pressure-bearing column and the lower pressure-bearing column both include: a vertical pressure-bearing outer steel pipe 61, a vertical pressure-bearing inner steel pipe 62 and a vertical pressure-bearing concrete 63;

[0056] The vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe are concentrically arranged;

[0057] The vertical pressure-bearing outer steel pipe is sleeved on the outer side of the vertical pressure-bearing inner steel pipe;

[0058] The space between the vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe is filled with vertical pressure-bearing concrete;

[0059] An annular groove is provided on the vertical pressure-bearing concrete at the bottom of the upper pressure-bearing column;

[0060] An annular groove is provided on the vertical pressure-bearing concrete at the top of the lower pressure-bearing column.

[0061] In addition, preferably, in a specific embodiment of the present invention, the omnidirectional metal damper may further include: a plurality of stiffening ribs 15;

[0062] The bottom of each stiffening rib is connected to the upper connecting plate or the lower connecting plate, and one side of each stiffening rib is connected to the shear energy dissipation unit.

[0063] In addition, preferably, in a specific embodiment of the present invention, the upper connecting plate and the lower connecting plate are connected to the shear energy dissipation unit and the cylindrical vertical pressure-bearing unit by welding or bolting.

[0064] In addition, preferably, in a specific embodiment of the present invention, the radial shear stress-bearing steel plate is made of low-yield point steel with a yield strength between 100 MPa and 225 MPa.

[0065] In addition, preferably, in a specific embodiment of the present invention, the steel core column and the annular constraint steel pipe are made of steel with a yield strength of not less than 235 MPa.

[0066] To sum up, in the technical solution of the present invention, a shear energy dissipation unit is arranged in the middle of the omnidirectional metal damper, and a cylindrical vertical pressure-bearing unit is sleeved on the outside of the shear energy dissipation unit, an annular groove is arranged in the middle of the cylindrical vertical pressure-bearing unit, and a plurality of metal balls are arranged in the annular groove, and the annular groove can control the displacement of the metal balls in the horizontal direction. Therefore, when the building structure connected to the omnidirectional metal damper is displaced, the shear energy dissipation unit can withstand the shear force, and the cylindrical vertical pressure-bearing unit sleeved on the outside of the shear energy dissipation unit can withstand the vertical pressure and effectively transmit the vertical pressure through the metal balls, and can also realize omnidirectional sliding of the plane to share the horizontal force exerted on the shear energy dissipation unit. Therefore, in the process of the omnidirectional metal damper being subjected to force in any direction on the plane, the problem of premature loss of energy dissipation capacity due to the shear energy dissipation unit being subjected to vertical pressure can be avoided, thereby better exerting the energy dissipation function of the damper.

[0067] In addition, the omnidirectional metal damper in the present invention has a simple structure, clear force transmission, and is easy to install. It can effectively transmit vertical pressure and has a good shear energy dissipation effect.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An omnidirectional metal damper, characterized in that: The omnidirectional metal damper comprises: an upper connecting plate, a lower connecting plate, a shear energy dissipation unit and a cylindrical vertical pressure-bearing unit; The shear energy dissipation unit is arranged in the middle of the omnidirectional metal damper, the bottom of the shear energy dissipation unit is connected to the lower connecting plate, and the top is connected to the upper connecting plate; The cylindrical vertical pressure-bearing unit is concentrically sleeved on the outside of the shear energy dissipation unit; The cylindrical vertical pressure-bearing unit comprises: an upper pressure-bearing column, a lower pressure-bearing column and a plurality of metal balls; The bottom of the upper pressure-bearing column and the top of the lower pressure-bearing column are both provided with an annular groove for the movement of the plurality of metal balls; the plurality of metal balls are arranged in the annular groove; The bottom of the lower pressure column is connected to the lower connecting plate, and the top is in contact with the bottom of the metal ball; The top of the upper pressure-bearing column is connected to the upper connecting plate, and the bottom is in contact with the top of the metal ball; The shear energy dissipation unit comprises: a steel core column, an annularly constrained steel pipe and a plurality of radial shear stress-bearing steel plates; The steel core column is arranged in the middle of the omnidirectional metal damper. The annular restraining steel pipe is concentrically sleeved on the outside of the steel core column; The plurality of radial shear stress-bearing steel plates are evenly distributed between the steel core column and the annular restraint steel pipe, and both sides of each radial shear stress-bearing steel plate are respectively connected to the steel core column and the annular restraint steel pipe; The bottoms of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the lower connecting plate, and the tops of the steel core column, the annular restraint steel pipe and the plurality of radial shear stress-bearing steel plates are all connected to the upper connecting plate; The upper pressure-bearing column and the lower pressure-bearing column both include: a vertical pressure-bearing outer steel pipe, a vertical pressure-bearing inner steel pipe and vertical pressure-bearing concrete; The vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe are concentrically arranged; The vertical pressure-bearing outer steel pipe is sleeved on the outer side of the vertical pressure-bearing inner steel pipe; The space between the vertical pressure-bearing outer steel pipe and the vertical pressure-bearing inner steel pipe is filled with vertical pressure-bearing concrete; An annular groove is provided on the vertical pressure-bearing concrete at the bottom of the upper pressure-bearing column; An annular groove is provided on the vertical pressure-bearing concrete at the top of the lower pressure-bearing column.

2. The omnidirectional metal damper according to claim 1, characterized in that: The omnidirectional metal damper further comprises: a plurality of stiffening ribs; The bottom of each stiffening rib is connected to the upper connecting plate or the lower connecting plate, and one side of each stiffening rib is connected to the shear energy dissipation unit.

3. The omnidirectional metal damper according to claim 1, characterized in that: The upper connecting plate and the lower connecting plate are connected as a whole with the shear energy dissipation unit and the cylindrical vertical pressure-bearing unit by welding or bolt connection.

4. The omnidirectional metal damper according to claim 1, characterized in that: The radial shear stress-bearing steel plate is made of low-yield point steel with a yield strength between 100 MPa and 225 MPa.

5. The omnidirectional metal damper according to claim 1, characterized in that: The steel core column and the annular restraint steel pipe are made of steel with a yield strength of not less than 235 MPa.

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