Over-limit self-resetting elbow-type viscous damper and its use method

Abstract

The present invention relates to the field of anti-vibration or vibration structures for general buildings, specifically an over-limit self-resetting elbow-type viscous damper and a method for using the same. An over-limit self-resetting elbow-type viscous damper comprises a frame column (11) and a frame beam (12), and is characterized in that it further comprises a support rod (2), a self-resetting rod (3), a damper (4), an elbow node (5) and an end node (6), wherein the support rod (2), the self-resetting rod (3) and the damper (4) are all rotatably connected via the elbow node (6), and the outer ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably connected to a vertex of the frame unit (1) via an end node (6). A method for using the over-limit self-resetting elbow-type viscous damper is characterized in that the following steps are implemented in sequence: I. Installation; II. Deformation within the design range; III. Over-limit self-resetting.

Description

Technical Field

[0001] The present invention relates to the field of anti-vibration or vibration structures for general buildings, and in particular to an over-limit self-resetting elbow-type viscous damper and a method for using the same. Background Art

[0002] Viscous dampers are energy-absorbing components widely used in structural engineering for earthquake resistance. They effectively increase the added damping ratio and enhance the structure's energy dissipation performance. Conventional arrangements for viscous dampers in structures include diagonal and herringbone arrangements. The elbow arrangement, discussed in this article, is a novel arrangement. Drawing on the principles of linkages in mechanical engineering, the elbow damper achieves displacement amplification during an earthquake through relative rotation between the elbow supports, thereby increasing the damper's deformation and energy dissipation capacity. Its performance surpasses that of traditional diagonal and herringbone viscous dampers.

[0003] While elbow viscous dampers offer significant advantages, they also have certain limitations. This limitation lies in the extremely limited deformation range within which they operate. This means that the threshold inter-story displacement angle that can be achieved by the corresponding structure is very small. This makes the structure susceptible to unexpected damage during a major earthquake, leading to serious consequences such as structural collapse. Summary of the Invention

[0004] In order to overcome the defects of the prior art and provide a building earthquake or vibration isolation device with simple structure and strong earthquake resistance, the present invention discloses an over-limit self-resetting elbow-type viscous damper and a method of using the same.

[0005] The present invention achieves the purpose of the invention through the following technical solutions:

[0006] An over-limit self-resetting elbow-type viscous damper includes frame columns and frame beams. Each frame column is fixed vertically in sequence, and each frame beam is fixed horizontally on the frame column in sequence. Two adjacent frame columns and two adjacent frame beams form a frame unit. The damper is characterized by further including a support rod, a self-resetting rod, a damper, an elbow node, and an end node.

[0007] The inner ends of the support rod, the self-resetting rod and the damper are rotatably connected through a common elbow node, and the outer ends of the support rod, the self-resetting rod and the damper are rotatably connected to a vertex of the frame unit through an end node respectively.

[0008] The self-resetting rod comprises a first connecting rod, a second connecting rod and a self-resetting connecting member, wherein the inner ends of the first connecting rod and the second connecting rod are connected by the self-resetting connecting member, the outer end of the first connecting rod serves as the inner end of the self-resetting rod, and the outer end of the second connecting rod serves as the outer end of the self-resetting rod;

[0009] The damper is a viscous damper.

[0010] The over-limit self-resetting elbow-type viscous damper is characterized by:

[0011] In the initial state of the frame unit, the damper and the support rod are perpendicular to each other;

[0012] The toggle node includes a toggle lug plate and a toggle pin. The inner ends of the damper, support rod and self-resetting rod are all provided with toggle lug plates, each of which has an toggle lug plate hole. The toggle lug plates on the inner ends of the damper, support rod and self-resetting rod are aligned with each other through the toggle lug plate holes. The toggle pin passes through each toggle lug plate hole in sequence to rotatably connect the damper, support rod and self-resetting rod.

[0013] The end node includes a vertex ear plate, an end ear plate and an end pin. A vertex ear plate is fixed on each of the three vertices of the frame unit. A vertex ear plate hole is provided on the vertex ear plate. The outer ends of the support rod, the self-resetting rod and the damper are all provided with end ear plates. End positioning holes are provided on the end ear plates. Each end positioning hole is aligned with a vertex ear plate hole and then the end pin is inserted to rotatably connect the support rod, the self-resetting rod and the damper to a vertex of the frame unit.

[0014] The over-limit self-resetting elbow-type viscous damper is characterized by:

[0015] The self-resetting connecting member includes an inner end plate and a bolt. The first connecting rod and the second connecting rod are both square tubes in the shape of a square. The inner end surfaces of the first connecting rod and the second connecting rod are both provided with an inner end plate. The inner end plates are respectively provided with an equal number of end plate connecting holes in corresponding positions. Each pair of corresponding end plate connecting holes is connected by a bolt. The bolt is a disc spring bolt or a ring spring bolt.

[0016] The over-limit self-resetting elbow-type viscous damper is characterized by:

[0017] The self-resetting connecting component includes a connecting plate and a memory connecting piece. The first connecting rod and the second connecting rod are both H-shaped groove rods. The webs at the inner ends of the first connecting rod and the second connecting rod are provided with web holes. The web holes are arranged in at least two rows and at least two columns in each row. There are two connecting plates. Positioning holes are respectively provided at both ends of the connecting plate. The positioning holes at each end are arranged in at least two rows and at least three columns in each row. The web holes and the positioning holes are long holes with a length at least three times the width. Each column of positioning holes is aligned with a column of web holes. The first connecting rod and the second connecting rod are opposite to each other at their inner ends. Each connecting plate is respectively attached to the two webs on the same side of the first connecting rod and the second connecting rod, and a column of positioning holes on each connecting plate and a column of web holes and a column of positioning holes on the opposite side of the web are aligned with each other, and then fixed with memory connectors in sequence. The memory connector uses bolts or cables made of nickel-titanium-based shape memory alloy.

[0018] The installation process of the present invention is as follows:

[0019] First, assemble the frame columns and frame beams according to the conventional frame structure construction process to form frame units. Then, rotatably hinge the support rod, self-resetting rod and damper at a vertex of the frame unit through each end node. Finally, rotatably hinge the inner ends of the support rod, self-resetting rod and damper through the elbow node.

[0020] In actual projects, dampers can be placed along the full height of a span within each frame unit or on individual floors. The angle between the damper and the support rod can be adjusted over a wide range, with a right angle being optimal. In addition to the upper elbow arrangement, this structural arrangement also allows for lower and reverse elbow arrangements.

[0021] The method of using the present invention is as follows:

[0022] 1. Schematic diagram of deformation principle within the design range:

[0023] Under the action of an earthquake, the frame unit will undergo horizontal deformation, driving the support rod and the self-resetting rod to rotate accordingly without changing the length. At the same time, the frame unit drives the damper to rotate accordingly and compress or stretch, thereby achieving the effect of energy dissipation and shock absorption.

[0024] 2. Schematic diagram of displacement amplification principle:

[0025] Use u f Indicates the horizontal deformation of the top frame beam of the frame unit, expressed as u d Indicates the deformation at both ends of the damper and defines the displacement amplification factor f=u d / u f By deducing mathematical and geometric relationships and adopting assumptions such as small deformation, the calculation formula for the displacement magnification coefficient f of the frame unit structure can be obtained after simplification:

[0026] f= =sinθ2 +sinθ3

[0027] The calculation formula for f shows that the displacement amplification factor f of the frame unit structure is related to the angles θ1, θ2, and θ3. In practical engineering, the value of f is typically between 2 and 5. Conventional arrangements, such as a herringbone arrangement, have a displacement amplification factor of 1, while those in a straight line arrangement have a displacement amplification factor of less than 1. This shows that the damper's displacement amplification factor in the present invention is several times greater than that of conventional arrangements, thus exponentially amplifying the damper's deformation and energy consumption.

[0028] 3. Schematic diagram of the principle of over-limit deformation mode:

[0029] When a huge earthquake occurs that exceeds the design expectations, the frame unit structure will be destroyed. At this time, the angle between the support rod and the self-resetting rod will be expanded to 180°, that is, the support rod and the self-resetting rod will be in a straight line.

[0030] When deformation occurs within the design range, the support rod and the self-resetting rod themselves do not directly undergo tensile deformation, but only transmit the bearing capacity of the damper; after excessive deformation occurs, the support rod and the self-resetting rod are stretched into a straight line under tension. At this time, the support rod and the self-resetting rod are directly subjected to tensile load. If there is no excessive self-resetting effect of the self-resetting rod, the support rod is very likely to suffer tensile damage.

[0031] 4. Schematic diagram of the over-limit self-reset mechanism principle:

[0032] The self-resetting rod is composed of a self-resetting connecting member connecting a first connecting rod and a second connecting rod. Through the reasonable design of the self-resetting rod, the following can be achieved:

[0033] When deformation occurs within the design range, the self-resetting rod only transmits the bearing force of the damper, so that no gap is generated between the first connecting rod and the second connecting rod;

[0034] When excessive deformation occurs, a gap is generated between the first connecting rod and the second connecting rod due to the tensile force, and the self-resetting connecting member applies axial pressure in the opposite direction of the stretching to the first connecting rod and the second connecting rod, thereby restoring the first connecting rod and the second connecting rod to their initial state, avoiding damage to the frame unit due to excessive deformation.

[0035] The present invention overcomes the defects of existing elbow-type viscous dampers and has the ability of over-limit self-resetting, so that the elbow-type viscous damper will not be damaged after deformation beyond the design expectations under the action of an earthquake, and can still be restored to a normal use state. In this way, the elbow-type viscous damper can continue to play the role of energy dissipation and shock absorption, reducing the damage caused by earthquakes to building structures.

[0036] The present invention has the following beneficial effects:

[0037] 1. Its over-limit self-reset capability allows the elbow viscous damper to recover from damage even after experiencing unexpected deformation under earthquake conditions, ultimately returning to normal operation. This ensures the damper maintains its energy dissipation and vibration reduction capabilities, significantly reducing the risk of damage during earthquakes and significantly enhancing the building's seismic resistance.

[0038] 2. Type A over-limit self-resetting elbow support is an axial tensile support with a simple and clear force transmission path. It can be combined with a variety of self-resetting elements to effectively provide restoring force for the component.

[0039] 3. The Type B over-limit self-resetting elbow support is a shear deformation type support. The bolt holes at the web of the main steel component and the connecting web can be set as round holes or oblong holes according to actual needs. When the bolt hole is a round hole, the self-resetting connecting element (such as a shape memory alloy bolt) can be tightened against the wall of the round hole to provide restoring force for the support through the shear deformation of the screw. When the bolt hole is an oblong hole, friction energy can also be dissipated through sliding, realizing a mechanism for the joint energy dissipation of multiple damping methods.

[0040] 4. The structure is simple, and each component can be manufactured in the factory and then transported to the site for rapid assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the present invention,

[0042] Figure 2 This is a front view of the present invention in which the self-resetting rod is connected to the first connecting rod and the second connecting rod by bolts.

[0043] Figure 3 This is an axonometric view of the self-resetting rod, which is connected to the first and second connecting rods by bolts, and the rear support rod, self-resetting rod and damper.

[0044] Figure 4 This is a schematic diagram of the assembly of the self-resetting rod, the first connecting rod and the second connecting rod, and the rear support rod, the self-resetting rod and the damper.

[0045] Figure 5 : is an assembly diagram of a self-resetting rod in the present invention that uses bolts to connect the first connecting rod and the second connecting rod.

[0046] Figure 6 This is a front view of a bolt using a disc spring bolt in the present invention.

[0047] Figure 7 This is a partial cross-sectional view of a bolt using a disc spring bolt in the present invention.

[0048] Figure 8 This is a front view of a bolt using a ring spring bolt in the present invention.

[0049] Figure 9 It is a partial cross-sectional view of a bolt using a ring spring bolt in the present invention.

[0050] Figure 10 is an assembly diagram of the elbow node in the present invention,

[0051] Figures 11 to 16 These are all assembly diagrams of the mid-end nodes of the present invention.

[0052] Figure 17 is an axonometric view of a support rod with an elbow node and an end node in the present invention,

[0053] Figure 18 This is a schematic diagram of the assembly of the support rod with an elbow node and an end node in the present invention.

[0054] Figure 19 This is a schematic diagram of the support rod, self-resetting rod and damper using the upper elbow type.

[0055] Figure 20 This is a schematic diagram of the support rod, self-resetting rod and damper using the lower elbow type.

[0056] Figure 21 This is a schematic diagram of the support rod, self-resetting rod and damper using the reverse elbow type.

[0057] Figure 22 This is a schematic diagram of the deformation principle of the present invention within the design range.

[0058] Figure 23 This is a schematic diagram of the principle of the failure mode of the present invention when the limit is exceeded.

[0059] Figure 24 This is a schematic diagram of the stretching of the self-resetting rod of the present invention, which is connected by bolts to the first connecting rod and the second connecting rod when the limit is exceeded.

[0060] Figure 25 This is a schematic diagram of the change process of the frame unit in the present invention from the initial state, to deformation within the design range, and then to self-reset after exceeding the limit.

[0061] Figure 26 This is a front view of the present invention in which the self-resetting rod adopts a memory connector to connect the first connecting rod and the second connecting rod.

[0062] Figure 27 This is an axonometric view of the present invention in which the self-resetting rod uses a memory connector to connect the first connecting rod and the second connecting rod.

[0063] Figure 28 This is a schematic diagram of the assembly of the self-resetting rod in the present invention, which uses a memory connector to connect the first connecting rod and the second connecting rod.

[0064] Figure 29 This is an axonometric view of a memory connector using a memory alloy bolt in the present invention.

[0065] Figure 30 This is an axonometric view of the memory connector using the memory alloy cable in the present invention.

[0066] Figure 31 It is a schematic diagram of the stretching of the self-resetting rod of the present invention that uses a memory connector to connect the first connecting rod and the second connecting rod when the limit is exceeded. DETAILED DESCRIPTION

[0067] The present invention is further illustrated below by means of specific examples.

[0068] Example 1

[0069] An over-limit self-resetting elbow viscous damper comprises a frame column 11, a frame beam 12, a support rod 2, a self-resetting rod 3, a damper 4, an elbow node 5 and an end node 6, as shown in FIG. Figures 1 to 21 As shown, the specific structure is:

[0070] like Figure 1 and Figure 2 As shown: each frame column 11 is fixed vertically in sequence, each frame beam 12 is fixed horizontally on the frame column 11 in sequence, and two adjacent frame columns 11 and two adjacent frame beams 12 form a frame unit 1;

[0071] like Figure 3 and Figure 4 As shown: the inner ends of the support rod 2, the self-resetting rod 3 and the damper 4 are rotatably connected through a common elbow node 5, and the outer ends of the support rod 2, the self-resetting rod 3 and the damper 4 are rotatably connected to a vertex of the frame unit 1 through an end node 6 respectively;

[0072] The self-resetting rod 3 includes a first connecting rod 31, a second connecting rod 32 and a self-resetting connecting member 33. The inner ends of the first connecting rod 31 and the second connecting rod 32 are connected by the self-resetting connecting member 33. The outer end of the first connecting rod 31 serves as the inner end of the self-resetting rod 3, and the outer end of the second connecting rod 32 serves as the outer end of the self-resetting rod 3.

[0073] The damper 4 is a viscous damper.

[0074] In this embodiment, the self-resetting connecting member 33 is as follows Figure 5 As shown: the self-resetting connecting member 33 includes an inner end plate 331 and a bolt 332. The first connecting rod 31 and the second connecting rod 32 are both square tubes in the shape of a square. The inner end surfaces of the first connecting rod 31 and the second connecting rod 32 are both provided with an inner end plate 331. The inner end plates 331 are respectively provided with an equal number of end plate connecting holes 333 corresponding in position. Each pair of end plate connecting holes 333 corresponding in position is connected by a bolt 332. The bolt 332 is a disc spring bolt or a ring spring bolt. The bolt 332 of the disc spring bolt is as shown in FIG. Figure 6 and Figure 7 As shown, the bolt 332 of the ring spring bolt is selected as Figure 8 and Figure 9 shown.

[0075] In this embodiment, the elbow node 5 is as follows Figure 10As shown, the toggle node 5 includes a toggle lug 51 and a toggle pin 52. The inner ends of the damper 4, the support rod 2, and the self-resetting rod 3 are all provided with toggle lugs 51. The toggle lugs 51 are provided with toggle lug holes 511. The toggle lugs 51 on the inner ends of the damper 4, the support rod 2, and the self-resetting rod 3 are aligned with each other through the toggle lug holes 511. The toggle pin 52 passes through each of the toggle lug holes 511 in sequence to rotatably connect the damper 4, the support rod 2, and the self-resetting rod 3.

[0076] In this embodiment, the end node 6 is as follows Figures 11 to 16 As shown: the end node 6 includes a vertex ear plate 61, an end ear plate 62 and an end pin 63. A vertex ear plate 61 is fixed to each of the three vertices of the frame unit 1. The vertex ear plate 61 is provided with a vertex ear plate hole 611. The outer ends of the support rod 2, the self-resetting rod 3 and the damper 4 are all provided with an end ear plate 62. The end ear plate 62 is provided with an end positioning hole 621. Each end positioning hole 621 is aligned with a vertex ear plate hole 611 and then the end pin 63 is inserted to rotatably connect the support rod 2, the self-resetting rod 3 and the damper 4 to a vertex of the frame unit 1.

[0077] The support rod 2 is provided with an elbow node 5 and an end node 6. Figure 17 and Figure 18 shown.

[0078] The installation process of this embodiment is as follows:

[0079] First, according to the conventional frame structure construction process, the frame columns 11 and the frame beams 12 are assembled to form frame units 1. After the frame columns 11 and the frame beams 12 are constructed, the vertex ear plates 61 are welded to the frame columns 11 and the frame beams 12.

[0080] Then, the support rod 2, the self-resetting rod 3 and the damper 4 are aligned with the vertex ear plate hole 611 of the vertex ear plate 61 through the end positioning holes 621 on their respective end ear plates 62, and then the end pin 63 is inserted, thereby rotatably hingedly connecting the support rod 2, the self-resetting rod 3 and the damper 4 to a vertex of the frame unit 1;

[0081] Finally, the inner ends of the support rod 2 , the self-resetting rod 3 and the damper 4 are rotatably hinged through the toggle node 5 .

[0082] In actual engineering, the damper 4 can be arranged along the full height of a certain span of each frame unit 1, or on individual floors. The angle between the damper 4 and the support rod 2 can be selected in a wide range, with a right angle being the best. In addition, this structural arrangement can also be adopted as follows Figure 19 In addition to the upper elbow style shown, you can also use Figure 20 The elbow-down position shown and Figure 21 The reverse elbow pose shown.

[0083] The method of using this embodiment is as follows:

[0084] 1. Schematic diagram of deformation principle within the design range:

[0085] Figure 19 is the initial state of this embodiment, such as Figure 22 As shown: under the action of an earthquake, the frame unit 1 will undergo horizontal deformation, driving the support rod 2 and the self-resetting rod 3 to rotate accordingly without changing the length. At the same time, the frame unit 1 drives the damper 4 to rotate accordingly and deform in compression or tension, thereby achieving the effect of energy dissipation and shock absorption.

[0086] 2. Schematic diagram of displacement amplification principle:

[0087] like Figure 22 As shown: Use u f The horizontal deformation of the top frame beam 12 of the frame unit 1 is represented by u d Represents the deformation at both ends of the damper 4, and defines the displacement amplification factor f=u d / u f By deducing mathematical and geometric relationships and adopting assumptions such as small deformation, the calculation formula for the displacement magnification factor f of the frame unit 1 structure can be obtained after simplification:

[0088] f= =sinθ2 +sinθ3

[0089] The calculation formula for f shows that the displacement amplification factor f of the frame unit 1 structure is related to the angles θ1, θ2, and θ3. In practical engineering, the value of f is typically between 2 and 5. The conventional arrangement is a herringbone arrangement. Therefore, in this embodiment, the displacement amplification factor of the damper 4 is increased several times compared to the conventional arrangement, thus exponentially amplifying the deformation and energy consumption of the damper 4.

[0090] 3. Schematic diagram of the principle of over-limit deformation mode:

[0091] like Figure 23 As shown: when a huge earthquake beyond the design expectations occurs, the frame unit 1 structure will be destroyed. At this time, the angle between the support rod 2 and the self-resetting rod 3 will be expanded to 180°, that is, the support rod 2 and the self-resetting rod 3 are in a straight line.

[0092] When deformation occurs within the design range, the support rod 2 and the self-resetting rod 3 themselves do not directly undergo tensile deformation, but only transmit the bearing capacity of the damper 4; after excessive deformation occurs, the support rod 2 and the self-resetting rod 3 are stretched into a straight line. At this time, the support rod 2 and the self-resetting rod 3 are directly subjected to tensile load. If there is no excessive self-resetting effect of the self-resetting rod 3, the support rod 2 is very likely to suffer tensile failure.

[0093] 4. Schematic diagram of the over-limit self-reset mechanism principle:

[0094] As mentioned above, in this embodiment, the self-resetting rod 3 is composed of a self-resetting connecting member 33 connecting the first connecting rod 31 and the second connecting rod 32. The self-resetting connecting member 33 includes an inner end plate 331 and a bolt 332. Through reasonable design, the following can be achieved:

[0095] In the event of Figure 22 When deformed within the design range shown, the self-resetting rod 3 only transmits the bearing force of the damper 4, and by applying a suitable pre-tightening force to the bolt 332, no gap is generated between the first connecting rod 31 and the second connecting rod 32;

[0096] In the event of Figure 23 When the deformation exceeds the limit, as shown in Figure 24 As shown, a gap is generated between the first connecting rod 31 and the second connecting rod 32 due to the tension, which drives the bolt 332 to move as shown in FIG. Figure 24 The axial tensile deformation shown by the arrows a and b, at this time, the disc spring or ring spring of the bolt 332 is compressed to generate an inward elastic force so as to have a self-resetting ability. Under the elastic force of the disc spring or ring spring of the bolt 332, the first connecting rod 31 and the second connecting rod 32 are subjected to axial pressure in the opposite direction of the stretching and return to the initial state, avoiding damage to the frame unit 1 due to excessive deformation.

[0097] The change process of frame unit 1 from initial state to deformation within the design range and then to self-reset after exceeding the limit is as follows: Figure 25 shown.

[0098] Example 2

[0099] An over-limit self-resetting elbow viscous damper comprises a frame column 11, a frame beam 12, a support rod 2, a self-resetting rod 3, a damper 4, an elbow node 5 and an end node 6, as shown in FIG. Figures 1 to 21 As shown, the specific structure is:

[0100] like Figure 1 、 Figures 10-18 、 Figures 26 to 30 As shown: each frame column 11 is fixed vertically in sequence, each frame beam 12 is fixed horizontally on the frame column 11 in sequence, and two adjacent frame columns 11 and two adjacent frame beams 12 form a frame unit 1;

[0101] The inner ends of the support rod 2, the self-resetting rod 3 and the damper 4 are rotatably connected through a common elbow node 5, and the outer ends of the support rod 2, the self-resetting rod 3 and the damper 4 are rotatably connected to a vertex of the frame unit 1 through an end node 6 respectively.

[0102] The self-resetting rod 3 includes a first connecting rod 31, a second connecting rod 32 and a self-resetting connecting member 33. The inner ends of the first connecting rod 31 and the second connecting rod 32 are connected by the self-resetting connecting member 33. The outer end of the first connecting rod 31 serves as the inner end of the self-resetting rod 3, and the outer end of the second connecting rod 32 serves as the outer end of the self-resetting rod 3.

[0103] In this embodiment, the self-resetting connecting member 33 is as follows Figure 28 As shown: the self-resetting connecting member 33 includes a connecting plate 334 and a memory connecting member 335. The first connecting rod 31 and the second connecting rod 32 are both H-shaped groove rods. The webs at the inner ends of the first connecting rod 31 and the second connecting rod 32 are provided with web holes 336. The web holes 336 are arranged in three rows and two columns in each row. There are two connecting plates 334. The two ends of the connecting plate 334 are respectively provided with positioning holes 337. The positioning holes 337 at each end are arranged in three rows and four columns in each row. The web holes 336 and the positioning holes 337 are long holes with a length of at least three times the width. The positioning holes 337 in each column are arranged in three rows and four columns in each row. They are respectively aligned with a row of web holes 336, the first connecting rod 31 and the second connecting rod 32 are opposite to each other with their inner ends, and each connecting plate 334 is respectively attached to the two webs on the same side of the first connecting rod 31 and the second connecting rod 32, and a row of positioning holes 337 on each connecting plate 334 and a row of web holes 336 and a row of positioning holes 337 on the opposite side of the web are aligned with each other, and then fixed with memory connectors 335 in sequence. The memory connector 335 is made of a bolt or cable made of a nickel-titanium-based shape memory alloy. The memory connector 335 of the memory alloy bolt is selected as follows. Figure 29 As shown, the memory connector 335 of the memory alloy cable is selected as Figure 30 shown.

[0104] In this embodiment, the selection of the damper 4 and the structures of the elbow node 5 and the end node 6 are the same as those in the first embodiment.

[0105] The installation process of this embodiment is as follows:

[0106] First, according to the conventional frame structure construction process, the frame columns 11 and the frame beams 12 are assembled to form frame units 1. After the frame columns 11 and the frame beams 12 are constructed, the vertex ear plates 61 are welded to the frame columns 11 and the frame beams 12.

[0107] Then, the support rod 2, the self-resetting rod 3 and the damper 4 are aligned with the vertex ear plate hole 611 of the vertex ear plate 61 through the end positioning holes 621 on their respective end ear plates 62, and then the end pin 63 is inserted, thereby rotatably hingedly connecting the support rod 2, the self-resetting rod 3 and the damper 4 to a vertex of the frame unit 1;

[0108] Finally, the inner ends of the support rod 2 , the self-resetting rod 3 and the damper 4 are rotatably hinged through the toggle node 5 .

[0109] In actual engineering, the damper 4 can be arranged along the full height of a certain span of each frame unit 1, or on individual floors. The angle between the damper 4 and the support rod 2 can be selected in a wide range, with a right angle being the best. In addition, this structural arrangement can also be adopted as follows Figure 19 In addition to the upper elbow style shown, you can also use Figure 20 The elbow-down position shown and Figure 21 The reverse elbow pose shown.

[0110] The method of using this embodiment is as follows:

[0111] The deformation principle, displacement amplification principle and over-limit deformation mode principle within the design range of this embodiment are the same as those of embodiment 1.

[0112] The principle of the over-limit self-reset mechanism of this embodiment is as follows:

[0113] As mentioned above, in this embodiment, the self-resetting rod 3 is composed of a self-resetting connecting member 33 connecting the first connecting rod 31 and the second connecting rod 32. The self-resetting connecting member 33 includes a connecting plate 334 and a memory connecting member 335. Through reasonable design, the following can be achieved:

[0114] In the event of Figure 22 When deformed within the design range shown, the self-resetting rod 3 only transmits the load-bearing force of the damper 4. By applying a suitable preload force to the memory connector 335, the static friction force at the joint between the memory connector 335 and the connecting plate 334 is made greater than the load-bearing force required to transmit the load-bearing force of the damper 4, thereby eliminating the gap between the first connecting rod 31 and the second connecting rod 32.

[0115] In the event of Figure 23 When the deformation exceeds the limit, as shown in Figure 31 As shown, a gap is generated between the first connecting rod 31 and the second connecting rod 32 due to the tension, which drives the connecting plate 334 to move as shown in FIG. Figure 31 The axial tensile deformation shown by the arrows c and d in the middle, the connecting plate 334 rubs against the fitting surfaces of the web of the first link 31 and the web of the second link 32, thereby having a damping mechanism for friction energy dissipation. When the web of the first link 31 and the web of the second link 32 stretch the connecting plate 334 to the hole wall of the memory connector 335 fitting the web hole 336 or the positioning hole 337, the memory connector 335 will undergo shear deformation. Subsequently, the memory connector 335 applies an axial pressure in the opposite direction of the stretching to the connecting plate 334 due to the memory effect of the material, thereby restoring the first link 31 and the second link 32 to their initial state, thereby avoiding damage to the frame unit 1 due to excessive deformation.

[0116] The process of frame unit 1 changing from the initial state to deformation within the design range and then to self-reset after exceeding the limit is the same as Figure 25 shown.

Claims

1. An over-limit self-resetting elbow viscous damper, characterized in that: The invention comprises a frame column (11) and a frame beam (12), wherein each frame column (11) is fixed vertically in sequence, and each frame beam (12) is fixed horizontally on the frame column (11) in sequence, and two adjacent frame columns (11) and two adjacent frame beams (12) form a frame unit (1). The invention is characterized in that the invention further comprises a support rod (2), a self-resetting rod (3), a damper (4), an elbow node (5) and an end node (6). The inner ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably connected through a common elbow node (5), and the outer ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably connected to a vertex of the frame unit (1) through an end node (6). The self-resetting rod (3) comprises a first connecting rod (31), a second connecting rod (32) and a self-resetting connecting member (33); the inner ends of the first connecting rod (31) and the second connecting rod (32) are connected via the self-resetting connecting member (33); the outer end of the first connecting rod (31) serves as the inner end of the self-resetting rod (3), and the outer end of the second connecting rod (32) serves as the outer end of the self-resetting rod (3); The damper (4) is a viscous damper; The self-resetting connecting member (33) includes an inner end plate (331) and a bolt (332). The first connecting rod (31) and the second connecting rod (32) are both square tubes in the shape of a square. The inner end plates (331) are provided on the inner end surfaces of the first connecting rod (31) and the second connecting rod (32). The inner end plates (331) are respectively provided with an equal number of end plate connecting holes (333) at corresponding positions. Each pair of end plate connecting holes (333) at corresponding positions is connected by a bolt (332). The bolt (332) is a disc spring bolt or a ring spring bolt.

2. The overrun self-resetting elbow viscous damper according to claim 1, characterized in that: In the initial state of the frame unit (1), the damper (4) and the support rod (2) are perpendicular to each other; The toggle node (5) includes an elbow lug plate (51) and an elbow pin (52). The inner ends of the damper (4), the support rod (2) and the self-resetting rod (3) are all provided with an elbow lug plate (51). The elbow lug plate (51) is provided with an elbow lug plate hole (511). The elbow lug plates (51) on the inner ends of the damper (4), the support rod (2) and the self-resetting rod (3) are aligned with each other through the elbow lug plate holes (511). The toggle pin (52) passes through each elbow lug plate hole (511) in sequence to rotatably connect the damper (4), the support rod (2) and the self-resetting rod (3). The end node (6) includes a vertex ear plate (61), an end ear plate (62) and an end pin (63). A vertex ear plate (61) is fixed to each of the three vertices of the frame unit (1). A vertex ear plate hole (611) is provided on the vertex ear plate (61). The outer ends of the support rod (2), the self-resetting rod (3) and the damper (4) are all provided with an end ear plate (62). An end positioning hole (621) is provided on the end ear plate (62). Each end positioning hole (621) is aligned with a vertex ear plate hole (611) and then the end pin (63) is inserted, so that the support rod (2), the self-resetting rod (3) and the damper (4) are respectively rotatably connected to a vertex of the frame unit (1).

3. An over-limit self-resetting elbow viscous damper, characterized in that: The invention comprises a frame column (11) and a frame beam (12), wherein each frame column (11) is fixed vertically in sequence, and each frame beam (12) is fixed horizontally on the frame column (11) in sequence, and two adjacent frame columns (11) and two adjacent frame beams (12) form a frame unit (1). The invention is characterized in that the invention further comprises a support rod (2), a self-resetting rod (3), a damper (4), an elbow node (5) and an end node (6). The inner ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably connected through a common elbow node (5), and the outer ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably connected to a vertex of the frame unit (1) through an end node (6). The self-resetting rod (3) comprises a first connecting rod (31), a second connecting rod (32) and a self-resetting connecting member (33); the inner ends of the first connecting rod (31) and the second connecting rod (32) are connected via the self-resetting connecting member (33); the outer end of the first connecting rod (31) serves as the inner end of the self-resetting rod (3), and the outer end of the second connecting rod (32) serves as the outer end of the self-resetting rod (3); The damper (4) is a viscous damper; The self-resetting connecting member (33) includes a connecting plate (334) and a memory connecting piece (335). The first connecting rod (31) and the second connecting rod (32) are both H-shaped groove rods. The webs at the inner ends of the first connecting rod (31) and the second connecting rod (32) are both provided with web holes (336). The web holes (336) are arranged in at least two rows and at least two columns in each row. There are two connecting plates (334). The two ends of the connecting plates (334) are respectively provided with positioning holes (337). The positioning holes (337) at each end are arranged in at least two rows and at least three columns in each row. The web holes (336) and the positioning holes (337) are both at least 1 / 4" long. It is a long hole three times the width, each row of positioning holes (337) is aligned with a row of web holes (336), the first connecting rod (31) and the second connecting rod (32) are opposite to each other at their inner ends, each connecting plate (334) is respectively attached to the two webs on the same side of the first connecting rod (31) and the second connecting rod (32), and the row of positioning holes (337) and the row of web holes (336) and the row of positioning holes (337) on the opposite side of the web are aligned with each other and then fixed in sequence with memory connectors (335), and the memory connectors (335) are selected from bolts or cables made of memory alloy.

4. The overrun self-resetting elbow viscous damper according to claim 3, characterized in that: In the initial state of the frame unit (1), the damper (4) and the support rod (2) are perpendicular to each other; The toggle node (5) includes an elbow lug plate (51) and an elbow pin (52). The inner ends of the damper (4), the support rod (2) and the self-resetting rod (3) are all provided with an elbow lug plate (51). The elbow lug plate (51) is provided with an elbow lug plate hole (511). The elbow lug plates (51) on the inner ends of the damper (4), the support rod (2) and the self-resetting rod (3) are aligned with each other through the elbow lug plate holes (511). The toggle pin (52) passes through each elbow lug plate hole (511) in sequence to rotatably connect the damper (4), the support rod (2) and the self-resetting rod (3). The end node (6) includes a vertex ear plate (61), an end ear plate (62) and an end pin (63). A vertex ear plate (61) is fixed to each of the three vertices of the frame unit (1). A vertex ear plate hole (611) is provided on the vertex ear plate (61). The outer ends of the support rod (2), the self-resetting rod (3) and the damper (4) are all provided with an end ear plate (62). An end positioning hole (621) is provided on the end ear plate (62). Each end positioning hole (621) is aligned with a vertex ear plate hole (611) and then the end pin (63) is inserted, so that the support rod (2), the self-resetting rod (3) and the damper (4) are respectively rotatably connected to a vertex of the frame unit (1).

5. The method for using the overrun self-resetting elbow viscous damper according to claim 2, wherein: Follow the steps below: I. Installation: First, frame columns (11) and frame beams (12) are assembled according to a conventional frame structure construction process to form frame units (1). After the frame columns (11) and frame beams (12) are constructed, the vertex ear plates (61) are welded to the frame columns (11) and frame beams (12); Then, the support rod (2), the self-resetting rod (3) and the damper (4) are aligned with the vertex ear plate hole (611) on a vertex ear plate (61) through the end positioning holes (621) on their respective end ear plates (62) and then the end pin (63) is inserted, thereby rotatably hingedly connecting the support rod (2), the self-resetting rod (3) and the damper (4) to a vertex of the frame unit (1); Finally, the inner ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably hinged through the elbow joint (5); II. Deformation within the design range: Under the action of an earthquake, the frame unit (1) will deform horizontally, driving the support rod (2) and the self-resetting rod (3) to rotate accordingly without changing their length. At the same time, the frame unit (1) drives the damper (4) to rotate accordingly and deform in compression or tension, thereby achieving the effect of energy dissipation and shock absorption. III. Over-limit automatic reset: When deformation occurs within the design range, the self-resetting rod (3) only transmits the bearing force of the damper (4), and by applying a suitable pre-tightening force to the bolt (332), no gap is generated between the first connecting rod (31) and the second connecting rod (32); When excessive deformation occurs, a gap is generated between the first connecting rod (31) and the second connecting rod (32) due to the tension, which drives the bolt (332) to undergo axial tensile deformation. At this time, the bolt (332) generates an inward elastic force and thus has a self-resetting ability. Under the elastic force of the bolt (332), the first connecting rod (31) and the second connecting rod (32) are subjected to an axial pressure in the opposite direction of the tensile force and return to their initial state, thereby avoiding damage to the frame unit (1) due to excessive deformation.

6. The method for using the overrun self-resetting elbow viscous damper according to claim 4, wherein: Follow the steps below: I. Installation: First, frame columns (11) and frame beams (12) are assembled according to a conventional frame structure construction process to form frame units (1). After the frame columns (11) and frame beams (12) are constructed, the vertex ear plates (61) are welded to the frame columns (11) and frame beams (12); Then, the support rod (2), the self-resetting rod (3) and the damper (4) are aligned with the vertex ear plate hole (611) on a vertex ear plate (61) through the end positioning holes (621) on their respective end ear plates (62) and then the end pin (63) is inserted, thereby rotatably hingedly connecting the support rod (2), the self-resetting rod (3) and the damper (4) to a vertex of the frame unit (1); Finally, the inner ends of the support rod (2), the self-resetting rod (3) and the damper (4) are rotatably hinged through the elbow joint (5); II. Deformation within the design range: Under the action of an earthquake, the frame unit (1) will deform horizontally, driving the support rod (2) and the self-resetting rod (3) to rotate accordingly without changing their length. At the same time, the frame unit (1) drives the damper (4) to rotate accordingly and deform in compression or tension, thereby achieving the effect of energy dissipation and shock absorption. III. Over-limit automatic reset: When deformation occurs within the design range, the self-resetting rod (3) only transmits the bearing force of the damper (4). By applying a suitable pre-tightening force to the memory connecting member (335), the static friction force at the joint between the memory connecting member (335) and the connecting plate (334) is made greater than the bearing force required to transmit the bearing force of the damper (4), thereby eliminating the gap between the first connecting rod (31) and the second connecting rod (32); When over-limit deformation occurs, a gap is generated between the first connecting rod (31) and the second connecting rod (32) due to the tension, which drives the connecting plate (334) to undergo axial tensile deformation. The connecting plate (334) rubs against the contact surface of the web of the first connecting rod (31) and the web of the second connecting rod (32), thereby having a damping mechanism for friction energy consumption. When the web of the first connecting rod (31) and the web of the second connecting rod (32) stretch the connecting plate (334) to the hole wall of the web hole (336) or the positioning hole (337) of the memory connecting member (335), the memory connecting member (335) will undergo shear deformation. Subsequently, due to the memory effect of the material, the memory connecting member (335) applies an axial pressure in the opposite direction of the stretching to the connecting plate (334), thereby restoring the first connecting rod (31) and the second connecting rod (32) to their initial state, thereby avoiding damage to the frame unit (1) due to over-limit deformation.

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