A superimposed metal shear damper

Abstract

The invention provides a stacked metal shear damper, comprising a first shear unit, a second shear unit inserted in the first shear unit, and an energy-consuming unit inserted in the first shear unit and the second shear unit, wherein the first shear unit is composed of a bottom plate, a front plate, a rear plate, a left plate and a right plate, a plurality of first energy-consuming holes are provided on the front plate and the rear plate, and the first energy-consuming holes are arranged in a single row or in multiple rows, the second shear unit is in a T-shaped structure, the second shear unit is composed of a horizontal plate and a vertical plate, a plurality of second energy-consuming holes are provided on the vertical plate, the energy-consuming unit is a rectangular thin plate structure, the number of the energy-consuming units is the same as the number of the second energy-consuming holes, the energy-consuming unit is inserted into the second energy-consuming holes, the front end of the energy-consuming unit is clamped in the first energy-consuming hole of the front plate, the rear end of the energy-consuming unit is clamped in the first energy-consuming hole of the rear plate, and the energy-consuming unit is fixedly connected to the first shear unit and the second shear unit by welding.

Description

Technical Field

[0001] The invention relates to the field of building structure shock absorption, and in particular to a superimposed metal shear damper. Background Art

[0002] The traditional earthquake-resistant method is to firmly connect the upper structure and foundation of the house. During an earthquake, the ground movement energy is input into the house structure through the foundation, causing the house structure to vibrate, deform, or even collapse. The basic idea of ​​"energy dissipation and seismic isolation" is to separate the foundation and the upper structure of the house to isolate the input of earthquake energy into the building. This ensures that the ground moves during an earthquake while the building remains basically stationary, thus ensuring the safety of the building.

[0003] According to the different energy dissipation mechanisms, dampers can be divided into the following four types: metal dampers, friction dampers, viscous dampers and viscoelastic dampers. Among them, metal dampers use mild steel as shear plates, taking advantage of its low yield strength and good ductility. Compared with the main structure, it can enter yield earlier, so that the accumulated plastic deformation after the yield of mild steel can be used to dissipate seismic energy. Metal dampers have comprehensive coverage of parameters such as stiffness, bearing capacity, yield displacement, stable performance, good durability, strong environmental adaptability, and low maintenance costs.

[0004] However, existing metal dampers have certain disadvantages:

[0005] (1) Existing metal dampers generally have only one energy dissipation unit. After a small earthquake, the energy dissipation unit will not only deform elastically but also yield. Therefore, the metal damper must be replaced after a small earthquake.

[0006] (2) Existing metal dampers have small displacement and cannot withstand multiple reciprocating motions. Therefore, they can easily cause buildings to collapse during earthquakes and cannot withstand damage from subsequent aftershocks.

[0007] (3) Traditional metal dampers generally have only one shear plate, so there is a problem of cracking of the shear plate due to stress concentration during reciprocating loading tests. Summary of the invention

[0008] The main purpose of the present invention is to provide a superimposed metal shear damper, which can effectively solve the problems in the background technology.

[0009] To achieve the above object, the technical solution adopted by the present invention is: a superimposed metal shear damper, comprising a first shear unit, a second shear unit inserted in the first shear unit, and an energy dissipation unit inserted in the first shear unit and the second shear unit, wherein:

[0010] The first shearing unit is a box structure without a cover, the cross section of the first shearing unit is U-shaped, and the first shearing unit is composed of a bottom plate, a front plate, a rear plate, a left plate and a right plate, the front plate is parallel to the rear plate, and a plurality of first energy dissipation holes are opened on the front plate and the rear plate, the first energy dissipation holes are arranged in a single row or multiple rows, and the hole spacing between adjacent energy dissipation holes is the same;

[0011] The second shearing unit is slot-assembled with the first shearing unit, and is fixedly connected to the first shearing unit through a welding process. The second shearing unit is in a T-shaped structure. The second shearing unit is composed of a horizontal plate and a vertical plate. The vertical plate is clamped on the inner side of the left plate and the right plate. The vertical plate is parallel to the front plate or the rear plate. A plurality of second energy dissipation holes are opened on the vertical plate. The second energy dissipation holes coincide with the central axis of the corresponding first energy dissipation holes.

[0012] The energy consumption unit is a rectangular thin plate structure. The energy consumption unit can be made of carbon steel or alloy steel. The number of the energy consumption units is the same as the number of the second energy consumption holes. The energy consumption unit is inserted into the second energy consumption hole, and the front end of the energy consumption unit is clamped in the first energy consumption hole of the front plate, and the rear end of the energy consumption unit is clamped in the first energy consumption hole of the rear plate. The energy consumption unit is fixedly connected to the first shear unit and the second shear unit by welding.

[0013] Further, the bottom plate is perpendicular to the front plate or the rear plate or the left plate or the right plate;

[0014] The front plate is perpendicular to the left plate or the right plate;

[0015] The rear plate is perpendicular to the left plate or the right plate;

[0016] The left plate is parallel to the right plate.

[0017] Furthermore, the number, position and size of the first energy dissipation holes on the front plate and the rear plate are consistent.

[0018] Furthermore, the first energy dissipation hole is in a rectangular shape.

[0019] Furthermore, the number, position, size and shape of the second energy dissipation holes are the same as and correspond to those of the first energy dissipation holes.

[0020] Furthermore, the second shearing unit and the first shearing unit are welded by outer corner welding.

[0021] Furthermore, the transverse plate is located outside the first shearing unit, and the transverse plate is parallel to the bottom plate.

[0022] Furthermore, the welding method of the energy consumption unit and the second shearing unit or the first shearing unit is specifically outer plug welding.

[0023] Furthermore, the energy consumption unit is provided with a plurality of energy consumption grooves, and the energy consumption grooves are V-shaped.

[0024] Furthermore, the number of the energy consumption slots is four, and they are symmetrically distributed at the upper end and the lower end of the energy consumption unit.

[0025] The present invention provides a superimposed metal shear damper, which has the following beneficial effects compared with the prior art:

[0026] (1) The present invention provides a superimposed metal shear damper, the horizontal bearing capacity of which is formed by the superposition of the bearing capacity of each energy dissipation unit. A single energy dissipation unit is subjected to small force and has large displacement. Each energy dissipation unit is elastically deformed and does not yield in small earthquakes, and no replacement is required in small earthquakes.

[0027] (2) The present invention provides a stacked metal shear damper, which has a large displacement and a high safety factor. It can withstand multiple reciprocating motions and will not cause the building to collapse due to a single earthquake. It can withstand the damage of multiple aftershocks after an earthquake.

[0028] (3) The present invention provides a superimposed metal shear damper, which has a large yield displacement, stable horizontal bearing capacity, and low initial stiffness. It can dissipate energy during small earthquakes and provide good protection for the structure. During large earthquakes, as the displacement of the damper increases, the horizontal force also increases, and the energy dissipation effect is obvious, providing a higher additional damping ratio for the building.

[0029] (4) The present invention provides a stacked metal shear damper, which has a large limit displacement and a small single weld bearing capacity, effectively preventing the weld from cracking, thereby realizing multiple reciprocating tests.

[0030] (5) The present invention provides a stacked metal shear damper, the horizontal bearing capacity of which is composed of a plurality of stacked shear units, which effectively breaks the status quo of a traditional shear damper having only one shear plate and solves the problem of cracking of the shear plate due to stress concentration during reciprocating loading tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a cross-sectional view of the metal damper in the first embodiment;

[0032] Figure 2 is a schematic structural diagram of the first shearing unit in the first embodiment;

[0033] Figure 3is a schematic structural diagram of the second shearing unit in the first embodiment;

[0034] Figure 4 is a schematic diagram of the structure of the energy consumption unit in the first embodiment;

[0035] 1-first shearing unit; 11-bottom plate; 12-front plate; 13-rear plate; 14-left plate; 15-right plate; 16-first energy dissipation hole; 2-second shearing unit; 21-horizontal plate; 22-vertical plate; 23-second energy dissipation hole; 3-energy dissipation unit; 31-energy dissipation groove. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, for the convenience of description below, the referenced "upper", "lower", "left", and "right" are the same as the upper, lower, left, and right directions of the drawings themselves. The "first", "second", etc. below are distinguished for the description and have no other special meanings.

[0037] In view of the problems existing in the prior art, the present application provides a stacked metal shear damper, comprising a first shear unit, a second shear unit inserted in the first shear unit, and an energy dissipation unit inserted in the first shear unit and the second shear unit, wherein:

[0038] 1-First shear unit

[0039] The first shearing unit is a coverless box structure, the cross-section of the first shearing unit is U-shaped, and the first shearing unit is composed of a bottom plate, a front plate, a rear plate, a left plate and a right plate, the front plate is parallel to the rear plate, and a plurality of first energy-consuming holes are opened on the front plate and the rear plate, the first energy-consuming holes are arranged in a single row or multiple rows, and the hole spacing between adjacent energy-consuming holes is the same.

[0040] In a specific application scenario, the thickness of the front plate and the rear plate is the same, and the thickness is h1;

[0041] The left plate and the right plate have the same thickness, and the thickness is h2, where h1 is greater than h2.

[0042] Further, the bottom plate is perpendicular to the front plate or the rear plate or the left plate or the right plate;

[0043] The front plate is perpendicular to the left plate or the right plate;

[0044] The rear plate is perpendicular to the left plate or the right plate;

[0045] The left plate is parallel to the right plate.

[0046] Furthermore, the number, position and size of the first energy dissipation holes on the front plate and the rear plate are consistent.

[0047] Furthermore, the first energy dissipation hole is in a rectangular shape.

[0048] 2- Second shear unit

[0049] The second shearing unit is slot-assembled with the first shearing unit, and is fixedly connected to the first shearing unit through a welding process. The second shearing unit is in a T-shaped structure, and is composed of a horizontal plate and a vertical plate. The vertical plate is clamped on the inner sides of the left plate and the right plate, and the vertical plate is parallel to the front plate or the rear plate. A plurality of second energy-consuming holes are formed on the vertical plate, and the second energy-consuming holes coincide with the central axis of the corresponding first energy-consuming holes.

[0050] In a specific application scenario, the second shear unit and the first shear unit are assembled by card falcon, and the second shear unit is fixedly connected to the first shear unit through a welding process, which solves the problem of cracking of a shear plate of a traditional shear damper due to stress concentration in the shear plate during a reciprocating loading test.

[0051] Furthermore, the number, position, size and shape of the second energy dissipation holes are the same as and correspond to those of the first energy dissipation holes.

[0052] Furthermore, the second shearing unit and the first shearing unit are welded by outer corner welding.

[0053] In specific application scenarios, the outer corner weld reduces the bearing capacity of a single weld, thereby effectively preventing the occurrence of weld cracking, thereby enabling multiple reciprocating tests.

[0054] Furthermore, the transverse plate is located outside the first shearing unit, and the transverse plate is parallel to the bottom plate.

[0055] 3-Energy Consumption Unit

[0056] The energy consumption unit is a rectangular thin plate structure. The energy consumption unit can be made of carbon steel or alloy steel. The number of the energy consumption units is the same as the number of the second energy consumption holes. The energy consumption unit is inserted into the second energy consumption hole, and the front end of the energy consumption unit is clamped in the first energy consumption hole of the front plate, and the rear end of the energy consumption unit is clamped in the first energy consumption hole of the rear plate. The energy consumption unit is fixedly connected to the first shear unit and the second shear unit by welding.

[0057] In specific application scenarios, there are multiple energy absorbing units, so the horizontal bearing capacity of the damper is formed by the superposition of the bearing capacity of each energy absorbing unit, so that a single energy absorbing unit has the characteristics of small force and large displacement. In small earthquakes, each energy absorbing unit elastically deforms and does not yield, and no replacement is required in small earthquakes.

[0058] Furthermore, the welding method of the energy consumption unit and the second shearing unit or the first shearing unit is specifically outer plug welding.

[0059] In specific application scenarios, the outer plug welding reduces the bearing capacity of a single weld, thereby effectively preventing the occurrence of weld cracking, thereby enabling multiple reciprocating tests.

[0060] Furthermore, the energy consumption unit is provided with a plurality of energy consumption grooves, and the energy consumption grooves are V-shaped.

[0061] In specific application scenarios, the energy consumption groove can be not only V-shaped, but also U-shaped, triangular, semicircular, etc. As long as the performance of the energy consumption unit is not affected, the specific groove shape can be set according to actual needs. Such changes in the groove shape will not affect the protection scope of this application.

[0062] Furthermore, the number of the energy consumption slots is four, and they are symmetrically distributed at the upper end and the lower end of the energy consumption unit.

[0063] The present invention provides a superimposed metal shear damper, which has the following beneficial effects compared with the prior art:

[0064] (1) The present invention provides a superimposed metal shear damper, the horizontal bearing capacity of which is formed by the superposition of the bearing capacity of each energy dissipation unit. A single energy dissipation unit is subjected to small force and has large displacement. Each energy dissipation unit is elastically deformed and does not yield in small earthquakes, and no replacement is required in small earthquakes.

[0065] (2) The present invention provides a stacked metal shear damper, which has a large displacement and a high safety factor. It can withstand multiple reciprocating motions and will not cause the building to collapse due to a single earthquake. It can withstand the damage of multiple aftershocks after an earthquake.

[0066] (3) The present invention provides a superimposed metal shear damper, which has a large yield displacement, stable horizontal bearing capacity, and low initial stiffness. It can dissipate energy during small earthquakes and provide good protection for the structure. During large earthquakes, as the displacement of the damper increases, the horizontal force also increases, and the energy dissipation effect is obvious, providing a higher additional damping ratio for the building.

[0067] (4) The present invention provides a stacked metal shear damper, which has a large limit displacement and a small single weld bearing capacity, effectively preventing the weld from cracking, thereby realizing multiple reciprocating tests.

[0068] (5) The present invention provides a stacked metal shear damper, the horizontal bearing capacity of which is composed of a plurality of stacked shear units, which effectively breaks the status quo of a traditional shear damper having only one shear plate and solves the problem of cracking of the shear plate due to stress concentration during reciprocating loading tests.

[0069] Embodiment 1:

[0070] Based on the above concept, Figure 1-4 FIG. 1 is a schematic diagram of a structure of a superimposed metal shear damper in a specific application scenario provided by the present invention, and the metal shear damper comprises:

[0071] A superimposed metal shear damper, such as Figure 1 As shown, it includes a first shearing unit 1, a second shearing unit 2 inserted in the first shearing unit 1, and an energy consumption unit 3 inserted in the first shearing unit 1 and the second shearing unit 2, wherein:

[0072] The first shearing unit 1, such as Figure 2 As shown, it is a coverless box structure, the cross section of the first shearing unit 1 is U-shaped, and the first shearing unit 1 is composed of a bottom plate 11, a front plate 12, a rear plate 13, a left plate 14 and a right plate 15, the front plate 12 is parallel to the rear plate 13, and a plurality of first energy consumption holes 16 are opened on the front plate 12 and the rear plate 13, the first energy consumption holes 16 are arranged in a single row or multiple rows, and the hole spacing between adjacent energy consumption holes is the same;

[0073] The second shearing unit 2, such as Figure 3 As shown, the first shearing unit 1 is assembled by a card falcon, and the second shearing unit 2 is fixedly connected to the first shearing unit 1 through a welding process. The second shearing unit 2 is a T-shaped structure. The second shearing unit 2 is composed of a horizontal plate 21 and a vertical plate 22. The vertical plate 22 is clamped on the inner side of the left plate 14 and the right plate 15. The vertical plate 22 is parallel to the front plate 12 or the rear plate 13. A plurality of second energy consumption holes 23 are opened on the vertical plate 22. The second energy consumption hole 23 coincides with the central axis of the corresponding first energy consumption hole 16.

[0074] The energy consumption unit 3, such as Figure 4 As shown, it is a rectangular thin plate structure, and the number of the energy consumption units 3 is the same as the number of the second energy consumption holes 23. Figure 1As shown, the energy consumption unit 3 is inserted into the second energy consumption hole 23, and the front end of the energy consumption unit 3 is stuck in the first energy consumption hole 16 of the front plate 12, and the rear end of the energy consumption unit 3 is stuck in the first energy consumption hole 16 of the rear plate 13. The energy consumption unit 3 is fixedly connected to the first shear unit 1 and the second shear unit 2 by welding.

[0075] Further, the bottom plate 11 is perpendicular to the front plate 12 or the rear plate 13 or the left plate 14 or the right plate 15;

[0076] The front plate 12 is perpendicular to the left plate 14 or the right plate 15;

[0077] The rear plate 13 is perpendicular to the left plate 14 or the right plate 15;

[0078] The left plate 14 is parallel to the right plate 15 .

[0079] Furthermore, the number, position and size of the first energy dissipation holes 16 on the front plate 12 and the rear plate 13 are consistent.

[0080] Further, if Figure 1 As shown, the shape of the first energy dissipation hole 16 is rectangular.

[0081] Furthermore, the number, position, size and shape of the second energy dissipation holes 23 and the first energy dissipation holes 16 are the same and corresponding.

[0082] Furthermore, the second shearing unit 2 and the first shearing unit 1 are welded in a specific manner by outer corner welding.

[0083] Furthermore, the transverse plate 21 is located outside the first shearing unit 1 , and the transverse plate 21 is parallel to the bottom plate 11 .

[0084] Furthermore, the welding method of the energy consumption unit 3 and the second shearing unit 2 or the first shearing unit 1 is specifically outer plug welding.

[0085] Further, if Figure 4 As shown, the energy consumption unit 3 is provided with a plurality of energy consumption grooves 31 , and the energy consumption grooves 31 are V-shaped.

[0086] Further, if Figure 4 As shown, the number of the energy consumption slots 31 is four, and they are symmetrically distributed at the upper end and the lower end of the energy consumption unit 3 .

[0087] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A superimposed metal shear damper, characterized in that: The invention comprises a first shearing unit (1), a second shearing unit (2) inserted in the first shearing unit (1), and an energy consumption unit (3) inserted in the first shearing unit (1) and the second shearing unit (2), wherein: The first shearing unit (1) is a box structure without a cover. The cross section of the first shearing unit (1) is U-shaped, and the first shearing unit (1) is composed of a bottom plate (11), a front plate (12), a rear plate (13), a left plate (14) and a right plate (15). The front plate (12) is parallel to the rear plate (13). A plurality of first energy dissipation holes (16) are provided on the front plate (12) and the rear plate (13). The first energy dissipation holes (16) are arranged in a single row or multiple rows, and the hole spacing between adjacent energy dissipation holes is the same. The second shearing unit (2) is assembled with the first shearing unit (1) by means of a clamping process, and the second shearing unit (2) is fixedly connected to the first shearing unit (1) through a welding process. The second shearing unit (2) is in a T-shaped structure. The second shearing unit (2) is composed of a horizontal plate (21) and a vertical plate (22). The vertical plate (22) is clamped on the inner side of the left plate (14) and the right plate (15). The vertical plate (22) is parallel to the front plate (12) or the rear plate (13). A plurality of second energy dissipation holes (23) are formed on the vertical plate (22). The central axis of the second energy dissipation hole (23) coincides with the central axis of the corresponding first energy dissipation hole (16). The energy consuming unit (3) is a rectangular thin plate structure. The energy consuming unit (3) can be made of carbon steel or alloy steel. The number of the energy consuming units (3) is the same as the number of the second energy consuming holes (23). The energy consuming unit (3) is inserted into the second energy consuming hole (23), and the front end of the energy consuming unit (3) is clamped in the first energy consuming hole (16) of the front plate (12), and the rear end of the energy consuming unit (3) is clamped in the first energy consuming hole (16) of the rear plate (13). The energy consuming unit (3) is fixedly connected to the first shearing unit (1) and the second shearing unit (2) by welding.

2. A superimposed metal shear damper according to claim 1, characterized in that: The bottom plate (11) is perpendicular to the front plate (12) or the rear plate (13) or the left plate (14) or the right plate (15); The front plate (12) is perpendicular to the left plate (14) or the right plate (15); The rear plate (13) is perpendicular to the left plate (14) or the right plate (15); The left plate (14) is parallel to the right plate (15).

3. The superimposed metal shear damper according to claim 1, characterized in that: The number, position and size of the first energy dissipation holes (16) on the front plate (12) and the rear plate (13) are consistent.

4. A superimposed metal shear damper according to claim 3, characterized in that: The first energy dissipation hole (16) is in the shape of a rectangle.

5. A superimposed metal shear damper according to claim 4, characterized in that: The number, position, size and shape of the second energy dissipation holes (23) and the first energy dissipation holes (16) are the same and correspond to each other.

6. The stacked metal shear damper according to claim 1, characterized in that: The welding method of the second shearing unit (2) and the first shearing unit (1) is specifically outer corner welding.

7. The stacked metal shear damper according to claim 1, characterized in that: The transverse plate (21) is located outside the first shearing unit (1), and the transverse plate (21) is parallel to the bottom plate (11).

8. The stacked metal shear damper according to claim 1, characterized in that: The welding method of the energy consumption unit (3) and the second shearing unit (2) or the first shearing unit (1) is specifically outer plug welding.

9. The stacked metal shear damper according to claim 1, characterized in that: The energy consumption unit (3) is provided with a plurality of energy consumption grooves (31), and the energy consumption grooves (31) are V-shaped.

10. A superimposed metal shear damper according to claim 9, characterized in that: The number of the energy consumption slots (31) is four, and they are symmetrically distributed at the upper end and the lower end of the energy consumption unit (3).

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