Damping aseismatic steel structure joint and construction method thereof

Abstract

The application discloses a kind of damping aseismatic steel structure nodes and its construction method, the node includes first steel member, second steel member, low yield cover, viscoelastic damping component and multiple damping connectors;First steel member and second steel member have first spacing;First steel member is connected to second steel member by low yield cover;First steel member and second steel member are all provided with multiple first long circular holes;Viscoelastic damping component is provided with second long circular hole coinciding with first long circular hole;Each damping connector is sequentially penetrated second long circular hole and first long circular hole, and connects viscoelastic damping component to first steel member and second steel member;The extension direction of first long circular hole and second long circular hole is same with the extension direction of viscoelastic damping component;Damping connector can be axially moved along the extension direction.It can effectively reduce shock, simple structure, less installation steps, low construction cost, low difficulty and high efficiency after earthquake repair reconstruction.

Description

Technical Field

[0001] This invention relates to the field of seismic resistance technology in buildings, and in particular to a damping seismic-resistant steel structure joint and its construction method. Background Technology

[0002] In the design and construction of buildings, the seismic performance of the structure needs to be carefully controlled. Traditional seismic resistance methods rely on the elastic-plastic deformation of the building structure itself to dissipate seismic energy. Essentially, this treats the building structure and its components as energy absorbers, which can lead to varying degrees of damage or even collapse under significant earthquakes. Currently, some important and special building structures employ seismic isolation and damping designs. By incorporating damping devices into the structure, the seismic response is reduced, thereby improving the building's seismic performance.

[0003] Currently, the main methods and measures for seismic damping include buckling-restrained braces (BRBs) and damper walls. Among these, the buckling-restrained brace technology is a method that prevents buckling by increasing the stiffness and stability of the structure. Specifically, a buckling-restrained sleeve is fitted around the yielding core material. Under seismic loading, all axial forces on the building structure are borne by the yielding core material at the center of the brace. Energy is dissipated through the yielding of this core material under axial tension and compression. Concrete or mortar is poured into the outer buckling-restrained sleeve to provide bending restraint on the yielding core material, preventing buckling under compression.

[0004] A typical damper wall is a viscous damping wall, which consists of shear plates, a steel box, and viscous damping material within the steel box. When an earthquake acts on a viscous damping wall, relative displacement or relative velocity occurs between the upper and lower floors of the structure. The shear plates, fixed to the upper floor beams, reciprocate within the steel box, and the viscous material inside the box undergoes shear deformation. Energy is dissipated through the internal friction generated during material flow, thereby reducing the structure's response to earthquakes. These damping measures are mainly used in important and special buildings, and their construction costs are high and the construction process is complex. Using these damping structures in the construction of ordinary steel-structured residential buildings would not only increase construction costs and reduce construction efficiency, but also make replacement of damaged structures difficult after an earthquake. Therefore, existing damping structures are difficult to widely apply in steel-structured residential buildings. Summary of the Invention

[0005] This invention provides a damping seismic-resistant steel structure node, which aims to solve the problems of high construction cost, complex structure, cumbersome construction steps, and difficulty in repairing and replacing seismic-resistant structures in existing technologies, thus making it impossible to apply seismic-resistant structures in ordinary steel-structure residential buildings.

[0006] In a first aspect, embodiments of the present invention provide a damping seismic-resistant steel structure node, including a first steel member, a second steel member, a low-yield cover plate, a viscoelastic damping assembly, and a plurality of damping connectors; a first distance exists between the first steel member and the second steel member; the first steel member is connected to the second steel member through the low-yield cover plate; a plurality of first elongated holes are provided on both the first steel member and the second steel member; a second elongated hole is provided on the viscoelastic damping assembly, the inner contour of which coincides with the inner contour of the first elongated hole; one end of each damping connector passes through a single second elongated hole and a single first elongated hole in sequence, and connects the viscoelastic damping assembly to the first steel member and the second steel member; the extension direction of the first end of the first elongated hole and the second elongated hole from the second end is the same as the extension direction of the viscoelastic damping assembly; the damping connector can move axially along the extension direction within the first elongated hole and the second elongated hole.

[0007] In some embodiments, when the damping connector is located at the first end of the first elongated hole and the second elongated hole, the outer wall of the damping connector near the second end of the first elongated hole and the second end of the second elongated hole has a first distance from the second end of the first elongated hole and the second end of the second elongated hole.

[0008] In some embodiments, the damping seismic steel structure node further includes a plurality of cover plate connectors; a plurality of first circular holes are provided on both the first steel member and the second steel member; a plurality of second circular holes with the same inner diameter as the first circular holes are provided on the low yield cover plate; one end of each of the cover plate connectors passes through a single first circular hole and a single second circular hole in sequence, and connects the low yield cover plate to the first steel member and the second steel member.

[0009] In some embodiments, the outer diameter of the cover plate connector is the same as the inner diameter of both the first circular hole and the second circular hole.

[0010] In some embodiments, the viscoelastic damping assembly includes a damping cover plate and a viscoelastic damping sheet; the viscoelastic damping sheet is attached to the first steel member and the second steel member; the damping cover plate is attached to the side of the viscoelastic damping sheet away from the first steel member and the second steel member.

[0011] In some embodiments, the low-yield cover plate includes a first low-yield cover plate and a second low-yield cover plate; the viscoelastic damping assembly includes a first viscoelastic damping assembly and a second viscoelastic damping assembly; the first low-yield cover plate is connected to a first end face of the first steel member and the second steel member; the second low-yield cover plate is connected to a second end face of the first steel member and the second steel member opposite to the first end face; the first viscoelastic damping assembly is connected to a third end face of the first steel member and the second steel member that is adjacent to both the first end face and the second end face; the second viscoelastic damping assembly is connected to a fourth end face of the first steel member and the second steel member opposite to the third end face.

[0012] In some embodiments, the first low-yield cover plate and the second low-yield cover plate are parallel to each other; the first viscoelastic damping component and the second viscoelastic damping component are parallel to each other; and the first viscoelastic damping component and the first low-yield cover plate are perpendicular to each other.

[0013] In some embodiments, both the first steel member and the second steel member include an upper flange, a lower flange, and a web; the upper flange is connected to the lower flange via the web; the web is perpendicularly connected to both the upper flange and the lower flange; the first low-yield cap plate is connected to the side of the upper flange away from the lower flange; the second low-yield cap plate is connected to the side of the lower flange away from the upper flange; the first viscoelastic damping assembly is connected to one side of the web; and the second viscoelastic damping assembly is connected to the other side of the web.

[0014] In some embodiments, the damping seismic steel structure node further includes a third low-yield cover plate; the low-yield cover plate is disposed on the side of the upper flange plate near the lower flange plate and on the side of the lower flange plate near the upper flange plate.

[0015] Secondly, embodiments of the present invention also provide a construction method for a damped seismic-resistant steel structure node applied to the damped seismic-resistant steel structure node as described in the first aspect. The method includes: arranging a first steel member and a second steel member in a preset manner, and having a first distance between the first steel member and the second steel member; connecting a low-yield cover plate to the first steel member and the second steel member; attaching a viscoelastic damping component to the first steel member and the second steel member, and aligning each second elongated hole with a corresponding first elongated hole on the first steel member and the second steel member; and installing each damping connector into the corresponding second elongated hole and the first elongated hole, so that the viscoelastic damping component is fixedly connected to the first steel member and the second steel member.

[0016] Based on the structure and construction method provided in this embodiment of the invention, the damping seismic-resistant steel structure node provided in this embodiment connects the first steel member and the second steel member through a low-yield cover plate and a viscoelastic damping component. Elongated holes are provided in the first and second steel members, allowing relative displacement between them during an earthquake. This enables the viscoelastic damping component to absorb seismic energy, while the low-yield cover plate undergoes plastic yielding and expansion to further dissipate seismic energy. Even if damaged after an earthquake, only the low-yield cover plate and the viscoelastic damping component need to be replaced; the first and second steel members, which form the main structure, do not need to be replaced. The damping seismic-resistant steel structure node provided in this embodiment of the invention can effectively reduce vibration, and its simple structure, fewer installation steps during construction, lower construction cost, and lower difficulty and higher efficiency in post-earthquake repair and reconstruction make it widely applicable to the seismic damping structures of large-scale steel-structure residential buildings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic structural diagram of a damping and seismic-resistant steel structure node provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the disassembled damping and seismic-resistant steel structure node provided in an embodiment of the present invention;

[0020] Figure 3 This is a disassembled top view of a damping seismic steel structure node provided in an embodiment of the present invention.

[0021] Figure 4 This is a disassembled side view of a damping seismic-resistant steel structure node provided in an embodiment of the present invention.

[0022] Figure 5 A schematic diagram of the combination of the damping connector and the first elongated hole in a damping seismic steel structure node provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic flowchart illustrating the construction method for damping and seismic-resistant steel structure nodes provided in an embodiment of the present invention.

[0024] The specific reference numerals in the attached figures are as follows:

[0025] 10. Damped seismic steel structure node; 100. First steel member; 110. First elongated hole; 120. First circular hole; 130. Upper flange plate; 140. Lower flange plate; 150. Web plate; 200. Second steel member; 300. Low yield cap plate; 310. Second circular hole; 301. First low yield cap plate; 302. Second low yield cap plate; 400. Viscoelastic damping assembly; 410. Second elongated hole; 401. First viscoelastic damping assembly; 402. Second viscoelastic damping assembly; 420. Damping cap plate; 430. Viscoelastic damping sheet; 500. Damping connector; 600. Cap plate connector; 700. Third low yield cap plate. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0030] Please see Figures 1-5 ,like Figure 1 and Figure 2As shown, this embodiment of the invention provides a damping seismic-resistant steel structure node 10, including a first steel member 100, a second steel member 200, a low-yield cover plate 300, a viscoelastic damping component 400, and a plurality of damping connectors 500; a first distance D1 is provided between the first steel member 100 and the second steel member 200; the first steel member 100 is connected to the second steel member 200 through the low-yield cover plate 300; a plurality of first elongated holes 110 are provided on both the first steel member 100 and the second steel member 200; the viscoelastic damping component 400 has an inner contour and... The inner contour of the first elongated hole 110 coincides with that of the second elongated hole 410; one end of each damping connector 500 passes through the single second elongated hole 410 and the single first elongated hole 110 in sequence, and connects the viscoelastic damping assembly 400 to the first steel member 100 and the second steel member 200; the extension direction of the first end of the first elongated hole 110 and the second elongated hole 410 from the second end is the same as the extension direction of the viscoelastic damping assembly 400; the damping connector 500 can move axially along the extension direction within the first elongated hole 110 and the second elongated hole 410.

[0031] In this embodiment, the first steel member 100 and the second steel member 200 together form the main structure of the damping seismic steel structure node 10. The first steel member 100 and the second steel member 200 can together form the steel diagonal bracing beam in the steel structure, or they can together form the transverse steel beam in the steel structure. There is a first gap D1 between the first steel member 100 and the second steel member 200, so that when the low-yield cover plate is compressed first during an earthquake, it has a certain deformation distance to release energy. In order to achieve effective shock absorption, the first steel member 100 and the second steel member 200 are connected by a low-yield cover plate 300 and a viscoelastic damping component 400. The two ends of the low-yield cover plate 300 are respectively attached to the adjacent end faces of the first steel member 100 and the second steel member 200, and are fixedly connected to both the first steel member 100 and the second steel member 200. A second elongated hole 410 is formed on the viscoelastic damping assembly 400, which coincides with the inner contour of the first elongated hole 110 formed on the first steel member 100 and the second steel member 200. The damping connector 500 passes through the first elongated hole 110 and the second elongated hole 410, thereby fixing the viscoelastic damping assembly 400 to the first steel member 100 and the second steel member 200. Specifically, multiple first elongated holes 110 are formed on the adjacent end faces of the first steel member 100 and the second steel member 200, and these multiple first elongated holes 110 can be arranged side by side, forming two rows of first elongated holes 110 on the first steel member 100 and the second steel member 200 to achieve a stable connection. The part of the viscoelastic damping component 400 that contacts the first steel component 100, the second steel component 200 and the damping connector 500 can be made of Caritys viscoelastic wide temperature range damping resin or Zn series viscoelastic damping material. The thickness of the viscoelastic damping component 400 is set to 1-2 mm.

[0032] The damping connector 500 can be made of high-strength bolts, which include bolts and nuts. During installation, the first steel component 100 and the second steel component 200 are first aligned according to a preset alignment, ensuring that the corresponding end faces of the first steel component 100 and the second steel component 200 are flush, and that the end faces with the first elongated holes 110 are aligned. Then, the low-yield cover plate 300 is connected to the corresponding end faces, connecting the first steel component 100 and the second steel component 200. Next, each second elongated hole 410 on the viscoelastic damping assembly 400 is aligned with its corresponding first elongated hole 110, ensuring that the inner contour of each second elongated hole 410 coincides with the inner contour of its corresponding first elongated hole 110. The two ends of the viscoelastic damping assembly 400 are then attached to the first steel component 100 and the second steel component 200 to generate damping friction. Subsequently, the bolt in the damping connector 500 is inserted through the second elongated hole 410 and the first elongated hole 110 sequentially from the side of the viscoelastic damping assembly 400 away from the first steel member 100 and the second steel member 200, so that the nut in the bolt in the damping connector 500 abuts against the viscoelastic damping assembly 400. Finally, the nut is screwed into the bolt in the damping connector 500 from the side of the first steel member 100 or the second steel member 200 away from the viscoelastic damping assembly 400. Thus, the damping connector 500 clamps and secures the first steel member 100 to the viscoelastic damping assembly 400 and the second steel member 200 to the viscoelastic damping assembly 400 from both sides. At this point, the damping seismic-resistant steel structure node 10 is installed. Compared to the existing construction process of seismic-resistant structures, the installation steps of the damping seismic-resistant steel structure node 10 provided in this embodiment of the invention are simpler, use fewer materials, and have lower construction costs.

[0033] The first elongated oval hole 110 and the second elongated oval hole 410 are openings of a certain length, and their extension direction is the same as the extension direction of the viscoelastic damping component 400, which is also the same as the direction of the relative displacement between the first steel member 100 and the second steel member 200 during an earthquake. Therefore, the damping connector 500 can move within the first elongated oval hole 110 and the second elongated oval hole 410. When an earthquake occurs, relative displacement occurs between the first steel member 100 and the second steel member 200, and consequently, the damping connector 500 also displaces within the first elongated oval hole 110 and the second elongated oval hole 410. At this time, the friction between the viscoelastic damping component 400 and the first steel member 100, the second steel member 200, and the damping connector 500 will cause the viscoelastic damping component 400 to absorb seismic energy. At the same time, since the low-yield cover plate 300 is made of low-yield point steel, the low-yield cover plate 300 will undergo plastic yielding and expansion, further dissipating seismic energy. By utilizing the combined dissipation or absorption of seismic energy through the low-yield cap plate 300 and the viscoelastic damping component 400, effective seismic resistance can be achieved, preventing the first steel member 100 and the second steel member 200 from bearing excessive seismic energy, thereby effectively preventing structural deformation or collapse. Even if the low-yield cap plate 300 or the viscoelastic damping component 400 is damaged, only the low-yield cap plate 300 or the viscoelastic damping component 400 needs to be replaced after the earthquake. Replacement is easy at the nodes, unlike existing seismic-resistant structures where the entire main structure needs to be replaced when damaged, thus improving repair efficiency and facilitating post-earthquake reconstruction.

[0034] In one embodiment, such as Figure 5 As shown, when the damping connector 500 is located at the first end of the first elongated hole 110 and the second elongated hole 410, the outer wall of the damping connector 500 near the second end of the first elongated hole 110 and the second end of the second elongated hole 410 has a first distance D1 between it and the second end of the first elongated hole 110 and the second end of the second elongated hole 410.

[0035] In this embodiment, the opening lengths of the first elongated hole 110 and the second elongated hole 410 can be set according to the outer diameter of the damping connector 500 and the first distance between the first steel member 100 and the second steel member 200. The outer diameter of the portion of the damping connector 500 located in the first elongated hole 110 and the second elongated hole 410, plus the first distance, equals the length of the first elongated hole 110 or the second elongated hole 410. The width of the first elongated hole 110 and the second elongated hole 410 is equal to the outer diameter of the damping connector 500 located in the first elongated hole 110 and the second elongated hole 410, to prevent the damping connector 500 from shaking. Furthermore, during an earthquake, even if the first steel member 100 and the second steel member 200 abut against each other, the damping connector 500 will abut against one end (the first end or the second end) of the first elongated hole 110 and the second elongated hole 410, effectively absorbing seismic energy. When installing the damping connectors 500, all the damping connectors 500 can be set at the first or second end of the corresponding first steel member 100 and second steel member 200 to achieve synchronous damping.

[0036] In one embodiment, such as Figure 2 and Figure 4 As shown, the damping seismic steel structure node 10 also includes multiple cover plate connectors 600; multiple first circular holes 120 are provided on both the first steel member 100 and the second steel member 200; multiple second circular holes 310 with the same inner diameter as the first circular holes 120 are provided on the low yield cover plate 300; one end of each cover plate connector 600 passes through a single first circular hole 120 and a single second circular hole 310 in sequence, and connects the low yield cover plate 300 to the first steel member 100 and the second steel member 200.

[0037] In this embodiment, the cover plate connector 600 is used to fix the low-yield cover plate 300. The first circular hole 120 and the second circular hole 310 are both circular openings, conforming to the outer contour of the cover plate connector 600. During installation, the low-yield cover plate 300 can first be attached to the first steel member 100 and the second steel member 200, ensuring that the first circular hole 120 and the second circular hole 310 are connected one-to-one. Then, the cover plate connector 600 is inserted through the first circular hole 120 and the second circular hole 310 to fix the low-yield cover plate 300 to the first steel member 100 and the second steel member 200, preventing displacement of the low-yield cover plate 300. The low-yield cover plate 300 is manufactured from low-yield point steel. Therefore, during an earthquake, because the low-yield cover plate 300 is fixedly connected to the first steel member 100 and the second steel member 200, it can only undergo plastic yielding and expansion, thus dissipating seismic energy.

[0038] In one embodiment, the outer diameter of the cover plate connector 600 is the same as the inner diameter of the first circular hole 120 and the inner diameter of the second circular hole 310.

[0039] In this embodiment, the outer diameter of the cover plate connector 600 is the same as the inner diameter of the first circular hole 120 and the second circular hole 310. Therefore, the cover plate connector 600 cannot move in the first circular hole 120 and the second circular hole 310, and the low yield cover plate 300 is fixed more firmly. As a result, the low yield cover plate 300 has a stronger plastic yield expansion effect and better seismic performance.

[0040] In one embodiment, such as Figure 2 and Figure 3 As shown, the viscoelastic damping assembly 400 includes a damping cover plate 420 and a viscoelastic damping sheet 430; the viscoelastic damping sheet 430 is attached to the first steel member 100 and the second steel member 200; the damping cover plate 420 is attached to the side of the viscoelastic damping sheet 430 away from the first steel member 100 and the second steel member 200.

[0041] In this embodiment, the damping cover plate 420 is made of steel, and the viscoelastic damping sheet 430 is made of Caritys viscoelastic wide-temperature-range damping resin (or Zn series viscoelastic damping material). That is, the viscoelastic damping sheet 430 is the main part of the viscoelastic damping assembly 400 that plays a damping and seismic resistance role. The damping cover plate 420 is located on the side of the viscoelastic damping sheet 430 away from the first steel member 100 and the second steel member 200, and the second elongated hole 410 is opened through the damping cover plate 420 and the viscoelastic damping sheet 430. In the specific installation process, after the viscoelastic damping sheet 430 is attached to the first steel member 100 and the second steel member 200, the damping cover plate 420 is covered on the viscoelastic damping sheet 430, so that each second elongated hole 410 and the first elongated hole 110 corresponds one-to-one. Then the damping connector 500 is installed. The damping cover plate 420 can generate more damping friction between itself and the viscoelastic damping sheet 430, enabling the viscoelastic damping assembly 400 to absorb more seismic energy.

[0042] In one embodiment, such as Figure 2As shown, the low yield cap 300 includes a first low yield cap 301 and a second low yield cap 302; the viscoelastic damping assembly 400 includes a first viscoelastic damping assembly 401 and a second viscoelastic damping assembly 402; the first low yield cap 301 is connected to a first end face of the first steel member 100 and the second steel member 200; the second low yield cap 302 is connected to a second end face of the first steel member 100 and the second steel member 200 opposite to the first end face; the first viscoelastic damping assembly 401 is connected to a third end face of the first steel member 100 and the second steel member 200 adjacent to both the first and second end faces; the second viscoelastic damping assembly 402 is connected to a fourth end face of the first steel member 100 and the second steel member 200 opposite to the third end face.

[0043] In this embodiment, both the low-yield cover plate 300 and the viscoelastic damping component 400 include two pieces. The first low-yield cover plate 301 and the second low-yield cover plate 302 are disposed on opposite end faces of the first steel member 100 and the second steel member 200. The first viscoelastic damping component 401 and the second viscoelastic damping component 402 are also disposed on opposite end faces of the first steel member 100 and the second steel member 200. Thus, the first low-yield cover plate 301, the second low-yield cover plate 302, the first viscoelastic damping component 401, and the second viscoelastic damping component 402 can uniformly absorb or dissipate seismic energy in all directions.

[0044] In one embodiment, such as Figure 2 As shown, the first low yield cover plate 301 and the second low yield cover plate 302 are parallel to each other; the first viscoelastic damping component 401 and the second viscoelastic damping component 402 are parallel to each other; the first viscoelastic damping component 401 and the first low yield cover plate 301 are perpendicular to each other.

[0045] In this embodiment, the first low yield cover plate 301, the second low yield cover plate 302, the first viscoelastic damping component 401 and the second viscoelastic damping component 402 form a seismic-resistant structure on four mutually perpendicular end faces, which makes the seismic resistance more stable.

[0046] In one embodiment, such as Figure 2 , Figure 3 and Figure 4As shown, both the first steel member 100 and the second steel member 200 include an upper flange plate 130, a lower flange plate 140, and a web plate 150; the upper flange plate 130 is connected to the lower flange plate 140 through the web plate 150; the web plate 150 is perpendicularly connected to both the upper flange plate 130 and the lower flange plate 140; a first low-yield cover plate 301 is connected to the side of the upper flange plate 130 away from the lower flange plate 140; a second low-yield cover plate 302 is connected to the side of the lower flange plate 140 away from the upper flange plate 130; a first viscoelastic damping assembly 401 is connected to one side of the web plate 150; and a second viscoelastic damping assembly 402 is connected to the other side of the web plate 150.

[0047] In this embodiment, to reduce weight and enhance structural stability, both the first steel member 100 and the second steel member 200 can be configured as H-shaped steel members. Both the first steel member 100 and the second steel member 200 include an upper flange plate 130, a lower flange plate 140, and a web plate 150 connecting the upper flange plate 130 and the lower flange plate 140. The web plate 150 is perpendicularly connected to the upper flange plate 130, and the web plate 150 is perpendicular to the lower flange plate 140, meaning the upper flange plate 130 and the lower flange plate 140 are parallel to each other. At this time, the first viscoelastic damping component 401 and the second viscoelastic damping component 402 are respectively disposed on both sides of the web plate 150, and the first low-yield cap plate 301 and the second low-yield cap plate 302 are respectively located on the upper flange plate 130 and the lower flange plate 140. Placing the first viscoelastic damping component 401 and the second viscoelastic damping component 402 in close proximity allows for more effective generation of damping friction force and better absorption of seismic energy. During installation, the first viscoelastic damping component 401 and the second viscoelastic damping component 402 are respectively attached to both sides of the web 150. Then, the thread of the bolt in the damping connector 500 passes through the second elongated hole 410 in the first viscoelastic damping component 401 and the first elongated hole 110 on the web 150 from the side of the first viscoelastic damping component 401 away from the first steel member 100 and the second steel member 200, and then passes out from the second elongated hole 410 in the second viscoelastic damping component 402, so that the nut in the bolt in the damping connector 500 abuts against the first viscoelastic damping component 401. Finally, the nut is screwed into the thread of the bolt in the damping connector 500 from the side of the second viscoelastic damping component 402 away from the web 150. Thus, the damping connector 500 clamps and fastens the first viscoelastic damping component 401 and the second viscoelastic damping component 402 to the web 150 from both sides.

[0048] In one embodiment, such as Figure 2 and Figure 4As shown, the damping seismic steel structure node 10 also includes a third low yield cap 700; the low yield cap 700 is disposed on the side of the upper flange plate 130 near the lower flange plate 140 and on the side of the lower flange plate 140 near the upper flange plate 130.

[0049] In this embodiment, the third low-yield cover plate 700 and the first low-yield cover plate 301 located on the upper flange plate 130 are respectively located on both sides of the upper flange plate 130, and the third low-yield cover plate 700 and the second low-yield cover plate 302 located on both sides of the lower flange plate 140 are respectively located on both sides of the lower flange plate 140. Therefore, the third low-yield cover plate 700, while strengthening the connection strength between the first steel member 100 and the second steel member 200, can also further absorb more seismic energy during an earthquake. In specific installation, taking the upper flange plate 130 as an example, the first low-yield cover plate 301 and the third low-yield cover plate 700 can be respectively attached to both sides of the upper flange plate 130 and then fixed simultaneously. Optionally, the third low-yield cover plate 700 located on the side of the upper flange plate 130 near the lower flange plate 140 includes two third low-yield cover plates 700 symmetrically arranged on both sides of the web plate 150; the third low-yield cover plate 700 located on the side of the lower flange plate 140 near the upper flange plate 130 includes two third low-yield cover plates 700 symmetrically arranged on both sides of the web plate 150. The two third low-yield cover plates 700 on the upper flange plate 130 are symmetrically arranged relative to the web plate 150, and the two third low-yield cover plates 700 on the lower flange plate 140 are also symmetrically arranged relative to the web plate 150. Therefore, the multiple low-yield cover plates 300 can absorb more seismic energy, further improving their seismic resistance.

[0050] Please see Figure 6 ,like Figure 6 As shown, this embodiment of the invention also provides a construction method for a damped seismic steel structure node applied to the damped seismic steel structure node 10 as described above, the method comprising steps S110-S140:

[0051] S110. Arrange the first steel component and the second steel component in a preset manner, and make a first gap between the first steel component and the second steel component.

[0052] Before construction, the corresponding end faces of the first steel member 100 and the second steel member 200 can be aligned, and a first gap D1 can be established between the first steel member 100 and the second steel member 200. Specifically, the upper flange plate 130 of the first steel member 100 can be aligned with the upper flange plate 130 of the second steel member 200, the lower flange plate 140 of the first steel member 100 can be aligned with the lower flange plate 140 of the second steel member 200, and the web plate 150 of the first steel member 100 can be aligned with the web plate 150 of the second steel member 200.

[0053] S120. Connect the low-yield cover plate to the first steel member and the second steel member.

[0054] Subsequently, the low yield cap 300 can be connected to the first steel member 100 and the second steel member 200. Specifically, the second round holes 310 on the low yield cap 300 can be aligned with the first round holes 120 on the corresponding first steel member 100 and the second steel member 200, and then the cap plate connector 600 can be installed into the first round holes 120 and the second round holes 310 to fix the low yield cap 300.

[0055] S130. The viscoelastic damping component is attached to the first steel member and the second steel member, and the second elongated holes are aligned with the corresponding first elongated holes on the first steel member and the second steel member.

[0056] Subsequently, the viscoelastic damping component 400 needs to be fitted to the corresponding end faces of the first steel member 100 and the second steel member 200, such as the web 150. Then, each of the second elongated holes 410 is aligned with its corresponding first elongated hole 110.

[0057] S140. Install each damping connector into the corresponding second elongated hole and the first elongated hole, so that the viscoelastic damping assembly is fixedly connected to the first steel member and the second steel member.

[0058] Finally, install each damping connector 500 into the corresponding second elongated hole 410 and first elongated hole 110 to complete the construction.

[0059] As can be seen, based on the structure and construction method provided in the embodiments of the present invention, the damping seismic steel structure node provided in the embodiments of the present invention connects the first steel member and the second steel member through a low-yield cover plate and a viscoelastic damping component. Elongated holes are opened in the first and second steel members, allowing relative displacement between them during an earthquake. This enables the viscoelastic damping component to absorb seismic energy, while the low-yield cover plate undergoes plastic yielding and expansion to further dissipate seismic energy. Even if damaged after an earthquake, only the low-yield cover plate and the viscoelastic damping component need to be replaced, without replacing the first and second steel members, which are the main structural components. The damping seismic steel structure node provided in the embodiments of the present invention can effectively reduce vibration, and its simple structure, fewer installation steps during construction, lower construction cost, and lower difficulty and higher efficiency in post-earthquake repair and reconstruction make it widely applicable to the vibration reduction structures of large-scale steel structure residential buildings.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A damping seismic-resistant steel structure joint, characterized in that, The device includes a first steel component, a second steel component, a low-yield cover plate, a viscoelastic damping assembly, and multiple damping connectors. A first distance exists between the first steel component and the second steel component. The first steel component is connected to the second steel component via the low-yield cover plate. Multiple first elongated holes are provided on both the first and second steel components. The viscoelastic damping assembly has a second elongated hole whose inner contour coincides with the inner contour of the first elongated holes. One end of each damping connector passes through a single second elongated hole and a single first elongated hole, respectively, and connects the viscoelastic damping assembly to the first and second steel components. The first end of the first elongated hole and the second elongated hole extends from the second end in the same direction as the extension direction of the viscoelastic damping component; the damping connector can move axially along the extension direction within the first elongated hole and the second elongated hole. The viscoelastic damping assembly includes a damping cover plate and a viscoelastic damping sheet; the viscoelastic damping sheet is attached to the first steel member and the second steel member; the damping cover plate is attached to the side of the viscoelastic damping sheet away from the first steel member and the second steel member; The portion of the viscoelastic damping component that contacts the first steel component, the second steel component, and the damping connector is made of Caritys viscoelastic wide-temperature-range damping resin or Zn series viscoelastic damping material, and the thickness of the viscoelastic damping component is set to 1-2 mm. The low-yield cover plate includes a first low-yield cover plate and a second low-yield cover plate; the viscoelastic damping assembly includes a first viscoelastic damping assembly and a second viscoelastic damping assembly; the first low-yield cover plate is connected to a first end face of the first steel member and the second steel member; the second low-yield cover plate is connected to a second end face of the first steel member and the second steel member opposite to the first end face; the first viscoelastic damping assembly is connected to a third end face of the first steel member and the second steel member that is adjacent to both the first end face and the second end face; the second viscoelastic damping assembly is connected to a fourth end face of the first steel member and the second steel member opposite to the third end face; Both the first steel member and the second steel member include an upper flange plate, a lower flange plate, and a web plate; the upper flange plate is connected to the lower flange plate via the web plate; the web plate is perpendicularly connected to both the upper flange plate and the lower flange plate; the first low-yield cap plate is connected to the side of the upper flange plate away from the lower flange plate; the second low-yield cap plate is connected to the side of the lower flange plate away from the upper flange plate; the first viscoelastic damping assembly is connected to one side of the web plate; the second viscoelastic damping assembly is connected to the other side of the web plate. The damping seismic steel structure node further includes a third low-yield cover plate; the third low-yield cover plate is disposed on the side of the upper flange plate near the lower flange plate and on the side of the lower flange plate near the upper flange plate.

2. The damping seismic-resistant steel structure node according to claim 1, characterized in that, When the damping connector is located at the first end of the first elongated hole and the second elongated hole, the outer wall of the damping connector near the second end of the first elongated hole and the second end of the second elongated hole has a first distance from the second end of the first elongated hole and the second end of the second elongated hole.

3. The damping seismic-resistant steel structure node according to claim 1, characterized in that, It also includes multiple cover plate connectors; multiple first circular holes are provided on both the first steel member and the second steel member; multiple second circular holes with the same inner diameter as the first circular holes are provided on the low yield cover plate; one end of each cover plate connector passes through a single first circular hole and a single second circular hole in sequence, and connects the low yield cover plate to the first steel member and the second steel member.

4. The damping seismic-resistant steel structure node according to claim 3, characterized in that, The outer diameter of the cover plate connector is the same as the inner diameter of the first circular hole and the inner diameter of the second circular hole.

5. The damping seismic-resistant steel structure node according to claim 1, characterized in that, The first low-yield cover plate and the second low-yield cover plate are parallel to each other; the first viscoelastic damping component and the second viscoelastic damping component are parallel to each other; the first viscoelastic damping component and the first low-yield cover plate are perpendicular to each other.

6. A construction method for a damped seismic-resistant steel structure joint, applied to the damped seismic-resistant steel structure joint as described in any one of claims 1-5, characterized in that, The method includes: The first steel component and the second steel component are arranged in a preset manner, and a first gap is provided between the first steel component and the second steel component. Connect the low-yield cover plate to the first steel member and the second steel member; The viscoelastic damping component is attached to the first steel member and the second steel member, and each second elongated hole is aligned with the corresponding first elongated hole on the first steel member and the second steel member. Each damping connector is installed into the corresponding second elongated hole and the first elongated hole to fix the viscoelastic damping assembly to the first steel member and the second steel member.

Images