Asynchronous staged yield metal damper

Abstract

The asynchronous staged yield metal damper comprises an outer plate and an inner plate and further comprises at least three sets of metal dampers, the outer plate comprises a bolt fixing section, an outer force transmission plate and an opening face, and a rectangular hole allowing the inner plate to penetrate through is formed in the opening face; at least three groups of metal dampers are arranged between the outer plate and the inner plate, the metal dampers comprise eight U-shaped metal dampers, and the upper surface and the lower surface of the inner plate are connected with the outer plate through the four U-shaped metal dampers; the inner plate comprises an oblong hole force transmission section, a round hole fixing section and an outer force transmission section, an oblong hole and a round hole I are formed in the oblong hole force transmission section and the round hole fixing section respectively, and the oblong hole and the round hole I can be connected with a round hole III of the U-shaped metal damper through high-strength bolts. According to the asynchronous staged yield metal damper, only the first-stage energy consumption unit works independently when small displacement occurs, the first-stage energy consumption unit and the second-stage energy consumption unit work together under the large displacement condition, and multi-stage energy consumption is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of energy dissipation and vibration reduction, and in particular to an asynchronous staged yielding metal damper. Background Art

[0002] Energy dissipation and shock absorption technology, as an important means to reduce earthquake damage, has been widely used in the construction field in recent years. This technology can effectively absorb and dissipate earthquake energy by adding energy-absorbing and shock-absorbing devices to buildings, thereby reducing the impact of earthquakes on structures. As a common shock-absorbing device, the main principle of metal dampers is to dissipate energy through plastic deformation of energy-absorbing steel plates. The commonly used metal dampers currently have the problem of a single energy dissipation form, which can no longer meet the current performance-based design concept and my country's seismic fortification goals of "no damage in small earthquakes, repairable in medium earthquakes, and no collapse in large earthquakes."

[0003] In view of the above problems existing in the current energy dissipation and shock absorption technology, the damper that can dissipate energy in stages under the action of earthquakes of different intensities has become the focus of research. Summary of the invention

[0004] The purpose of the present invention is to provide an asynchronous staged yielding metal damper to achieve staged energy dissipation and vibration reduction in order to solve the problem that the current metal damper has a single energy dissipation form.

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

[0006] An asynchronous staged yielding metal damper comprises an outer plate and an inner plate, and also comprises at least three groups of metal dampers, wherein the outer plate comprises a bolt fixing section, an outer force transmission plate and an opening surface, and a rectangular hole for the inner plate to pass through is arranged on the opening surface; at least three groups of metal dampers are arranged between the outer plate and the inner plate, and the metal dampers comprise eight U-shaped metal dampers, and the upper and lower surfaces of the inner plate are connected to the outer plate through four U-shaped metal dampers;

[0007] The inner plate includes an oblong hole force transmission section, a round hole fixing section and an outer force transmission section. The oblong hole force transmission section and the round hole fixing tube are respectively provided with an oblong hole and a round hole I. Both the oblong hole and the round hole I can be connected to the round hole III of the U-shaped metal damper by high-strength bolts.

[0008] Furthermore, the U-shaped metal damper includes a fixed section, a straight section and a curved section, and the circular hole III is arranged on the fixed section.

[0009] Furthermore, a reserved hole group connected to the circular hole III is provided on the bolt fixing section of the outer plate, and the hole diameter of the reserved hole group is consistent with the hole diameter of the circular hole III.

[0010] Furthermore, the aperture of the oblong hole is consistent with the aperture of the circular hole III, and the length of the oblong hole is greater than the length of the circular hole III; the aperture of the circular hole I is the same as that of the circular hole I.

[0011] Furthermore, the oblong holes and the circular holes I on the inner plate are arranged at equal intervals, and the circular hole I is arranged between the two groups of oblong holes.

[0012] Furthermore, the bolt fixing section and the opening surface form a rectangular frame, and the external force transmission plate is arranged on the side of the frame; the external force transmission section extends out of the rectangular hole, and the external force transmission section and the external force transmission plate are located in the same horizontal plane, and the external force transmission section and the external force transmission plate are symmetrically arranged relative to the frame.

[0013] Furthermore, a bolt connection hole is provided on the outer force transmission plate, and a circular hole II is provided on the outer force bearing section, and both the bolt connection hole and the circular hole II are connected to the external building.

[0014] Furthermore, the circular holes III of one group of metal dampers are connected to the circular holes I of the inner plate and the reserved hole group of the outer plate, and the circular holes III of the other two groups of metal dampers are connected to the oblong holes of the inner plate and the reserved hole group of the outer plate.

[0015] Furthermore, the other two groups of metal dampers are connected to the oblong hole force transmission section through high-strength bolts to form asynchronous force transmission, control the starting displacement of the metal damper, and form asynchronous staged yielding.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. An asynchronous staged yielding metal damper, with an oblong hole design on the inner plate, effectively realizes the asynchronous force of different U-shaped metal dampers. The oblong hole and bolts serve as asynchronous force transmission devices to control the starting displacement of the U-shaped metal dampers at both ends, and support the setting of the starting displacement according to actual engineering needs, realizing the "double yield point" performance characteristics of the asynchronous staged yielding metal damper. Only the middle U-shaped metal damper provides initial stiffness, which is more sensitive under small earthquakes. In the case of medium and large earthquakes, the first-level energy dissipation unit and the second-level energy dissipation unit work together, and the seismic energy dissipation is obvious;

[0018] 2. An asynchronous staged yielding metal damper can be repaired faster after an earthquake. In the case of a small earthquake, the middle section of the U-shaped metal damper will be damaged by energy consumption. The bolt connection method can ensure that it can be quickly replaced and restored to use soon. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an asynchronous staged yielding metal damper.

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of an asynchronous staged yielding metal damper.

[0021] Figure 3 Schematic diagram of the inner plate of an asynchronous staged yielding metal damper.

[0022] Figure 4 A schematic diagram of a U-shaped metal damper which is an asynchronous staged yielding metal damper.

[0023] Figure 5 The figure is a schematic diagram of the connection between the U-shaped metal damper and the inner plate circular hole fixed section of an asynchronous staged yielding metal damper.

[0024] Figure 6 The figure is a schematic diagram of the connection between a U-shaped metal damper of an asynchronous staged yielding metal damper and a force transmission section of an inner plate oblong hole.

[0025] Reference numerals: 1: outer plate, 1-1: bolt fixing section, 1-2: outer force transmission plate;

[0026] 2: inner plate, 2-1: oblong hole force transmission section, 2-1-1: oblong hole, 2-2: circular hole fixing section, 2-2-1: circular hole I, 2-3: external force section, 2-3-1: circular hole II;

[0027] 3: U-shaped metal damper, 3-1: fixed section, 3-1-1: circular hole III, 3-2: straight section, 3-3: curved section;

[0028] 4: High-strength bolts. DETAILED DESCRIPTION

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0031] See also Figure 1-3 , an asynchronous staged yielding metal damper, such as Figure 1 and Figure 2As shown, it includes an outer plate 1 and an inner plate 2, and also includes at least three groups of metal dampers. The outer plate 1 includes a bolt fixing section 1-1, an outer force transmission plate 1-2 and an opening surface, and a rectangular hole for the inner plate 2 to pass through is arranged on the opening surface; at least three groups of metal dampers are arranged between the outer plate 1 and the inner plate 2, and the metal dampers include eight U-shaped metal dampers 3, and the upper and lower surfaces of the inner plate 2 are connected to the outer plate 1 through four U-shaped metal dampers 3;

[0032] like Figure 3 As shown, the inner plate 2 includes an oblong hole force transmission section 2-1, a round hole fixing section 2-2 and an outer force transmission section 2-3. The oblong hole force transmission section 2-1 and the round hole fixing tube 2-2 are respectively provided with an oblong hole 2-1-1 and a round hole I 2-2-1. Figure 5 and Figure 6 As shown, both the oblong hole 2-1-1 and the circular hole Ⅰ2-2-1 can be connected to the circular hole Ⅲ3-1-1 of the U-shaped metal damper 3 by means of a high-strength bolt 4. The oblong hole 2-1-1 serves as a second-order force-bearing part, the circular hole fixing section 2-2 is used to fix the U-shaped metal damper 3 and the inner plate 2, and the outer force-bearing section 2-3 serves as a force-transmitting part of the inner plate 2 to the outside;

[0033] The completely fixed U-shaped metal damper 3 in the middle serves as the primary energy dissipation unit, and the U-shaped metal dampers 3 at both ends which are subjected to force only after the high-strength bolts 4 come into contact with the oblong holes 2-1-1 serve as the secondary energy dissipation units, forming an overall energy dissipation device.

[0034] The U-shaped metal damper 3 is directly fixed to the contact side of the outer plate 1 by high-strength bolts 4 to provide a small initial stiffness, ensuring sensitive response under small earthquakes and a certain energy dissipation capacity. The U-shaped metal dampers 3 at both ends are pre-tightened with the long circular hole force transmission sections 2-1 at both ends of the inner plate 2 through high-strength bolts 4 to realize asynchronous force transmission, control the starting displacement of the U-shaped metal dampers 3 at both ends, realize asynchronous staged yielding, and realize the joint work of the first-level energy dissipation unit and the second-level energy dissipation unit under large displacement conditions to realize multi-stage energy dissipation.

[0035] like Figure 4 As shown, the U-shaped metal damper 3 includes a fixed section 3-1, a straight section 3-2 and a curved section 3-3, and a circular hole III3-1-1 is arranged on the fixed section 3-1.

[0036] A reserved hole group connected to the circular hole III3-1-1 is provided on the bolt fixing section 1-1 of the outer plate 1, and the hole diameter of the reserved hole group is consistent with the hole diameter of the circular hole III3-1-1. The reserved hole group is connected to the circular hole III3-1-1 by high-strength bolts.

[0037] The aperture of the oblong hole 2-1-1 is consistent with the aperture of the circular hole III3-1-1, and the length of the oblong hole 2-1-1 is greater than the length of the circular hole III3-1-1, and the length is determined by actual conditions; the aperture of the circular hole I2-2-1 is the same as the circular hole I2-2-1.

[0038] The oblong holes 2-1-1 and the circular holes I2-2-1 on the inner plate 2 are arranged at equal intervals, and the circular hole I2-2-1 is arranged between the two groups of oblong holes 2-1-1.

[0039] One group of circular holes III3-1-1 of the metal damper is connected to the circular holes I2-2-1 of the inner plate 2 and the reserved hole group of the outer plate 1, and the other two groups of circular holes III3-1-1 of the metal damper are connected to the oblong holes 2-1-1 of the inner plate 2 and the reserved hole group of the outer plate 1.

[0040] The other two groups of metal dampers are connected to the oblong hole force transmission section 2-1 through high-strength bolts 4 to form asynchronous force transmission, control the starting displacement of the metal damper, and form asynchronous staged yielding.

[0041] The oblong hole 2-1-1 design of the inner plate 2 effectively realizes the asynchronous force of different U-shaped metal dampers 3. The oblong hole 2-1-1 and the high-strength bolts 4 serve as asynchronous force transmission devices to control the starting displacement of the U-shaped metal dampers 3 at both ends, support the setting of the starting displacement according to actual engineering needs, and realize the performance characteristics of the "double yield point" of the asynchronous staged yielding metal damper. Only the middle U-shaped metal damper 3 provides initial stiffness, which is more sensitive under small earthquakes. In the case of medium and large earthquakes, the first-level energy dissipation unit and the second-level energy dissipation unit work together, and the seismic energy dissipation is obvious;

[0042] The bolt fixing section 1-1 and the opening surface form a rectangular frame, and the external force transmission plate 1-2 is arranged on the side of the frame; the external force transmission section 2-3 extends out of the rectangular hole, and the external force transmission section 2-3 and the external force transmission plate 1-2 are located in the same horizontal plane, and the external force transmission section 2-3 and the external force transmission plate 1-2 are symmetrically arranged relative to the frame.

[0043] The outer force transmission plate 1-2 is provided with a bolt connection hole, and the outer force bearing section 2-3 is provided with a circular hole II2-3-1, and the bolt connection hole and the circular hole II2-3-1 are both connected to the external building. The bolt connection hole and the circular hole II2-3-1 are consistent in size with the connection bolt screw used therein.

[0044] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. An asynchronous staged yielding metal damper, comprising an outer plate (1) and an inner plate (2), characterized in that: It also includes at least three groups of metal dampers, the outer plate (1) includes a bolt fixing section (1-1), an outer force transmission plate (1-2) and an opening surface, and the opening surface is provided with a rectangular hole for the inner plate (2) to pass through; at least three groups of metal dampers are provided between the outer plate (1) and the inner plate (2), the metal dampers include eight U-shaped metal dampers (3), and the upper and lower surfaces of the inner plate (2) are connected to the outer plate (1) via four U-shaped metal dampers (3); The inner plate (2) comprises an oblong hole force transmission section (2-1), a round hole fixing section (2-2) and an outer force transmission section (2-3). The oblong hole force transmission section (2-1) and the round hole fixing tube (2-2) are respectively provided with an oblong hole (2-1-1) and a round hole I (2-2-1). Both the oblong hole (2-1-1) and the round hole I (2-2-1) can be connected to a round hole III (3-1-1) of a U-shaped metal damper (3) by means of a high-strength bolt (4).

2. The asynchronous staged yielding metal damper according to claim 1, characterized in that: The U-shaped metal damper (3) comprises a fixed section (3-1), a straight section (3-2) and a curved section (3-3), and the circular hole III (3-1-1) is arranged on the fixed section (3-1).

3. The asynchronous staged yielding metal damper according to claim 1, characterized in that: A reserved hole group connected to the circular hole III (3-1-1) is provided on the bolt fixing section (1-1) of the outer plate (1), and the hole diameter of the reserved hole group is consistent with the hole diameter of the circular hole III (3-1-1).

4. The asynchronous staged yielding metal damper according to claim 1, characterized in that: The aperture of the oblong hole (2-1-1) is consistent with the aperture of the circular hole III (3-1-1), and the length of the oblong hole (2-1-1) is greater than the length of the circular hole III (3-1-1); the aperture of the circular hole I (2-2-1) is consistent with the aperture of the circular hole I (2-2-1).

5. The asynchronous staged yielding metal damper according to claim 1, characterized in that: The oblong holes (2-1-1) and the circular holes I (2-2-1) on the inner plate (2) are arranged at equal intervals, and the circular hole I (2-2-1) is arranged between two groups of oblong holes (2-1-1).

6. The asynchronous staged yielding metal damper according to claim 1, characterized in that: The bolt fixing section (1-1) and the opening surface form a rectangular frame, and the external force transmission plate (1-2) is arranged on the side of the frame; the external force transmission section (2-3) extends out of the rectangular hole, and the external force transmission section (2-3) and the external force transmission plate (1-2) are located in the same horizontal plane, and the external force transmission section (2-3) and the external force transmission plate (1-2) are symmetrically arranged relative to the frame.

7. The asynchronous staged yielding metal damper according to claim 6, characterized in that: The outer force transmission plate (1-2) is provided with a bolt connection hole, and the outer force bearing section (2-3) is provided with a circular hole II (2-3-1), and both the bolt connection hole and the circular hole II (2-3-1) are connected to an external building.

8. The asynchronous staged yielding metal damper according to claim 3, characterized in that: The circular holes III (3-1-1) of one group of metal dampers are connected to the circular holes I (2-2-1) of the inner plate (2) and the reserved hole group of the outer plate (1), and the circular holes III (3-1-1) of the other two groups of metal dampers are connected to the oblong holes (2-1-1) of the inner plate (2) and the reserved hole group of the outer plate (1).

9. The asynchronous staged yielding metal damper according to claim 8, characterized in that: The other two groups of metal dampers are connected to the oblong hole force transmission section (2-1) via high-strength bolts (4) to form asynchronous force transmission, control the starting displacement of the metal dampers, and form asynchronous staged yielding.

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