Anti-seismic connecting piece for fabricated building steel frame structure and damping method

Abstract

The invention relates to the technical field of fabricated buildings, and particularly discloses an anti-seismic connecting piece for a fabricated building steel frame structure and a damping method. The U-shaped piece is arranged on the side, close to the cross beam, of the steel column and moves in the Y-axis direction, the transverse wave damping system is arranged in the U-shaped piece and connected with the U-shaped piece and the cross beam, and the longitudinal wave damping system is arranged between the bottom of the U-shaped piece and the steel column. An opening of the U-shaped piece is formed in the side away from the steel column. When an earthquake occurs, seismic transverse waves and seismic longitudinal waves in any direction can be effectively reduced through cooperation of the transverse wave damping system and the longitudinal wave damping system; damage of seismic transverse waves and seismic longitudinal waves to the cross beam and a building wall fixed on the cross beam is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated buildings, and more specifically, to a seismic connector and a shock absorption method for a steel frame structure of a prefabricated building. Background Art

[0002] As an industrialized building product, a prefabricated building can realize the production of all components and supporting parts in a steel structure factory, and transport them to the site for assembly and construction, effectively improving the construction efficiency. The seismic fortification intensity in plateau areas is generally relatively high, posing higher requirements for the structural earthquake resistance of buildings. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a seismic connector and a shock absorption method for a steel frame structure of a prefabricated building, which can effectively attenuate the shear waves and longitudinal waves generated during an earthquake;

[0004] The solution adopted by the present invention to solve the technical problem is as follows:

[0005] On the one hand:

[0006] A seismic connector for a steel frame structure of a prefabricated building is used for connecting a steel column arranged along the Y-axis direction and a cross beam arranged along the X-axis direction, and the steel column and the cross beam are vertically arranged;

[0007] A U-shaped member that can move along the Y-axis direction is movably installed on one side of the steel column close to the cross beam. A shear wave damping system is arranged between the U-shaped member and the cross beam, and a longitudinal wave damping system is installed between the bottom of the U-shaped member and the steel column;

[0008] The shear wave damping system includes a housing and several groups of shear wave dampers. The housing is placed inside the U-shaped member, and an activity groove is opened on one side close to the inner wall of the U-shaped member. The housing is provided with a through activity hole along the Y-axis direction. Several groups of the shear wave dampers are annularly distributed in the housing and are horizontally arranged. The axial direction of each group of shear wave dampers is arranged along the activity hole;

[0009] An avoidance groove is opened at one end of the cross beam close to the shear wave damper. The cross beam is provided with a first installation hole along the Y-axis direction, and the U-shaped member is provided with a second installation hole along the Y-axis direction. A first bolt and nut group is inserted into the first installation hole, the second installation hole, and the activity hole;

[0010] The head of the shear wave damper (the end close to the first bolt and nut group) is in abutting fit with the outer wall of the first bolt and nut group. The outer diameter of the screw rod of the first bolt and nut group is adapted to the inner diameter of the first installation hole and is smaller than the inner diameters of the activity hole and the second installation hole;

[0011] The longitudinal wave damping system includes at least two groups of longitudinal wave dampers arranged in the Y-axis direction. A support frame is installed on one side of the steel column close to the cross beam. The support frame is placed directly below the U-shaped member. The longitudinal wave dampers are arranged between the U-shaped member and the support frame. The inner size of the activity groove is larger than the size of the convex plate on the side close to the U-shaped member.

[0012] By adopting the above technical solution, the first bolt-nut group passes through the second installation hole, the first installation hole, and the activity hole. At the same time, the first bolt-nut group is installed in a non-tightened state, and the screw of the first bolt-nut group abuts against the ends of the six groups of transverse wave dampers.

[0013] When an earthquake occurs, since the steel column is fixed to the foundation, when the cross beam moves horizontally at any angle, the first bolt-nut group, the cross beam, and the wall fixing the cross beam will be affected by the transverse wave and move horizontally. At this time, the screw of the first bolt-nut group presses the transverse wave damper on the side opposite to the transverse wave direction, and the transverse wave is dissipated through the transverse wave damper on this side, reducing the damage of the transverse wave to the cross beam and the building wall fixed on the cross beam. It should be noted that the more the number of transverse wave dampers, the better the cancellation effect on the earthquake transverse wave in any direction.

[0014] In some possible implementation manners, the U-shaped member is provided with several groups of long strip holes. The long strip holes are strip-shaped along the Y-axis direction. The steel column is provided with several groups of third installation holes corresponding to the long strip holes. The long strip holes and the third installation holes are installed with a third bolt-nut group to realize the installation of the U-shaped member on the steel column.

[0015] By adopting the above technical solution, four groups of long strip holes are symmetrically opened at the upper and lower ends of the U-shaped member. The long strip holes are strip-shaped along the Y-axis direction, which is convenient for the U-shaped member to move up and down along the Y-axis direction after being fixed and cooperate with the longitudinal wave damper at the bottom to partially cancel the longitudinal wave during an earthquake. The long strip holes and the third installation holes are installed with a third bolt-nut group to realize the movable installation of the U-shaped member on the steel column.

[0016] In some possible implementation manners, the housing includes an upper housing and a lower housing. A plurality of groups of installation cavities are annularly distributed on the opposite sides of the upper housing and the lower housing. The side of the installation cavity close to the first bolt-nut group is an open structure;

[0017] The transverse wave damper is installed in the installation cavity. A flange is fixedly installed at the opposite ends of the upper housing and the lower housing to facilitate the installation of the upper housing and the lower housing.

[0018] By adopting the above technical solution, through the connection of the flange between the upper housing and the lower housing, it is convenient to install the transverse wave damper in the installation cavity, and finally realize the installation of the damper in the housing.

[0019] In some possible embodiments, a top plate is fixedly installed at one end of the longitudinal wave damper close to the U-shaped member, and a bottom plate is fixedly installed at the other end.

[0020] A number of groups of fifth mounting holes are provided on the bottom plate and the support frame, and a second bolt and nut group is installed in the corresponding fifth mounting holes to realize the disassembly and assembly between the longitudinal wave damping system and the support frame.

[0021] By adopting the above technical solution, the top plate fixedly installed at one end of the longitudinal wave damper close to the U-shaped member can increase the contact area between the damper and the bottom of the U-shaped member, preventing the U-shaped member from being damaged due to local stress during the generation of longitudinal waves. The cooperation of a number of groups of fifth mounting holes provided on the bottom plate and the support frame and the second bolt and nut group facilitates the disassembly and assembly between the longitudinal wave damping system and the support frame.

[0022] In some possible embodiments, a limiting plate is fixedly installed on one side of the steel column close to the cross beam, and the limiting plate is arranged between the U-shaped member and the support frame.

[0023] By adopting the above technical solution, under normal conditions, the cross beam is supported by the longitudinal wave damper at the bottom, and there is enough space between the lowermost end of the U-shaped member and the limiting plate to ensure the normal operation of the longitudinal wave damper. At the same time, during the up and down movement of the cross beam, it prevents the cross beam from descending excessively and causing damage to the damper by extrusion.

[0024] In some possible embodiments, a U-shaped plate is fixedly installed on one side of the steel column close to the U-shaped member. A number of groups of fourth bolt and nut groups are installed on the edge of the U-shaped plate. The steel column is provided with fourth mounting holes corresponding to the fourth bolt and nut groups, and the U-shaped member is arranged between the U-shaped plate and the steel column.

[0025] By adopting the above technical solution, by arranging two U-shaped plates on the outer sides of the upper and lower ends of the U-shaped member, the tensile strength between the U-shaped member and the steel column can be improved.

[0026] On the other hand:

[0027] Step S1: Process the steel column, cross beam, transverse wave damping system and longitudinal wave damping system, and perform anti-corrosion treatment.

[0028] Step S2: Install the transverse wave damping system;

[0029] After the foundation is formed, fix the steel column on the foundation;

[0030] Install the U-shaped member movably on the steel column. The housing of the transverse wave damping system is fixed by welding on the inner side of the U-shaped member, and the movable hole and the first mounting hole are coaxially positioned to complete the installation of the transverse wave damping system.

[0031] Step S3: Install the longitudinal wave damping system:

[0032] Install the longitudinal wave damping system on the support frame. The upper end of the longitudinal wave damper supports the bottom of the U-shaped part, so that the first bolt-nut group is placed in the middle position of the long slot, and the installation of the longitudinal wave damping system is completed;

[0033] Step S4: Insert the convex plate at one end of the cross beam close to the avoidance groove into the movable groove, and make the first installation hole and the movable hole on the same axis. Then pass the first bolt-nut group through the second installation hole, the first installation hole and the movable hole. At the same time, the first bolt-nut group is installed in a non-tightened state to ensure that the cross beam can swing in the horizontal direction, and the node installation is completed;

[0034] Step S5: After the overall node connection is completed, perform anti-corrosion treatment on the node again, and then cover the node with a bellows to complete the treatment of the node.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] When an earthquake occurs, by the cooperation of the transverse wave damping system and the longitudinal wave damping system in the present invention, it can effectively attenuate the earthquake transverse wave and earthquake longitudinal wave in any direction; reduce the damage of the earthquake transverse wave and earthquake longitudinal wave to the cross beam and the building wall fixed on the cross beam;

[0037] The structure of the present invention is simple and has strong practicability. Description of the Drawings

[0038] Figure 1 It is a schematic structural diagram of the present invention;

[0039] Figure 2 It is an exploded structural diagram of the present invention;

[0040] Figure 3 It is a schematic structural diagram of the transverse wave damping system of the present invention;

[0041] Figure 4 It is a top view structural diagram of the transverse wave damping system of the present invention;

[0042] Figure 5 It is an exploded structural diagram of the transverse wave damping system of the present invention;

[0043] Figure 6 It is a schematic structural diagram of the cross beam of the present invention;

[0044] Figure 7 It is a schematic structural diagram of the longitudinal wave damping system of the present invention;

[0045] Figure 8 It is a schematic structural diagram of the U-shaped plate of the present invention;

[0046] Figure 9 It is a schematic structural diagram of the U-shaped part of the present invention;

[0047] Figure 10 This is a schematic diagram of the steel column and support frame structure of the present invention;

[0048] Among them: 1. Steel column; 11. Third installation hole; 12. Fourth installation hole; 13. Limiting plate; 2. Cross beam; 21. Avoidance groove; 22. First installation hole; 3. U-shaped part; 31. Second installation hole; 32. Long strip hole; 33. Third bolt and nut group; 4. Transverse wave damping system; 41. Housing; 42. Installation cavity; 43. Flange; 44. Transverse wave damper; 45. Activity groove; 46. Activity hole; 5. First bolt and nut group; 6. Longitudinal wave damping system; 61. Longitudinal wave damper; 62. Top plate; 63. Bottom plate; 64. Second bolt and nut group; 7. Support frame; 71. Fifth installation hole; 8. U-shaped plate; 81. Fourth bolt and nut group. Specific embodiments

[0049] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two groups of components or the interaction relationship between two groups of components. The "first", "second" and similar words mentioned in this application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a group" or "one" do not represent a quantity limit, but represent the existence of at least one group. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "multiple groups" refers to two or more groups. For example, multiple groups of positioning columns refer to two or more groups of positioning columns. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The present invention will be described in detail below.

[0051] As Figures 1-10 shown,

[0052] An earthquake-resistant connector for the steel frame structure of prefabricated buildings, used for connecting the steel column 1 arranged along the Y-axis direction and the cross beam 2 arranged along the X-axis direction. The steel column 1 and the cross beam 2 are vertically arranged. A U-shaped member 3 that can move along the Y-axis direction is movably installed on one side of the steel column 1 close to the cross beam 2. During an earthquake, under the action of the longitudinal wave, the cross beam 2 can move up and down along the Y-axis direction. A transverse wave damping system 4 is arranged between the U-shaped member 3 and the cross beam 2 to dissipate the transverse wave generated during an earthquake. A longitudinal wave damping system 6 is installed between the bottom of the U-shaped member 3 and the steel column 1 to dissipate the longitudinal wave generated during an earthquake;

[0053] As Figures 3-5 shown, the transverse wave damping system 4 includes a housing 41 and several groups of transverse wave dampers 44. The housing 41 is placed inside the U-shaped member 3, and a movable groove 45 is opened on one side close to the inner wall of the U-shaped member 3. The housing 41 is provided with a through-type movable hole 46 along the Y-axis direction. Several groups of transverse wave dampers 44 are evenly distributed circumferentially along the movable hole 46 inside the housing 41 and are horizontally placed. An avoidance groove 21 is opened at one end of the cross beam 2 close to the transverse wave damper 44. The cross beam 2 is provided with a first installation hole 22 along the Y-axis direction. The U-shaped member 3 is provided with a second installation hole 31 along the plumb line direction. A first bolt and nut group 5 is inserted into the first installation hole 22, the second installation hole 31, and the movable hole 46. The head of the transverse wave damper 44 abuts against the outer wall of the first bolt and nut group 5. The outer diameter of the screw of the first bolt and nut group 5 is adapted to the inner diameter of the first installation hole 22 and is smaller than the inner diameters of the movable hole 46 and the second installation hole 31;

[0054] The longitudinal wave damping system 6 includes at least two groups of longitudinal wave dampers 61 arranged along the Y-axis direction. A support frame 7 is installed on one side of the steel column 1 close to the cross beam 2. The support frame 7 is placed directly below the U-shaped member 3. The longitudinal wave dampers 61 are arranged between the U-shaped member 3 and the support frame 7. The size of the convex plate of the cross beam 2 is smaller than the size of the movable groove 45. The first bolt and nut group 5 is passed through the second installation hole 31, the first installation hole 22, and the movable hole 46. At the same time, the first bolt and nut group 5 is installed in a non-tightened state. The screw of the first bolt and nut group 5 abuts against the ends of the six groups of transverse wave dampers 44;

[0055] When an earthquake occurs, the steel column 1 is fixed to the foundation. When the cross beam 2 shakes horizontally at any angle, the first bolt and nut group 5, the cross beam 2, and the fixed wall on the cross beam 2 are affected by the transverse wave and shake horizontally. At this time, the screw of the first bolt and nut group 5 presses the transverse wave damper 44 on the side opposite to the transverse wave direction, and the transverse wave is dissipated through the transverse wave damper 44 on this side, reducing the damage of the transverse wave to the cross beam 2 and the building wall fixed on the cross beam 2. It should be noted that the more the number of transverse wave dampers 44, the better the cancellation effect on the earthquake transverse wave in any direction.

[0056] The U-shaped part 3 is provided with several groups of long strip holes 32. The long strip holes 32 are strip-shaped along the Y-axis direction. The steel column 1 is provided with several groups of third mounting holes 11 corresponding to the long strip holes 32. A third bolt and nut group 33 is installed in the long strip holes 32 and the third mounting holes 11 to install the U-shaped part 3 on the steel column 1.

[0057] As Figure 9 shown, four groups of long strip holes 32 are symmetrically opened at the upper and lower ends of the U-shaped part 3. The long strip holes 32 are strip-shaped along the Y-axis direction, which facilitates the U-shaped part 3 to swing up and down along the plumb line direction after being fixed and cooperate with the longitudinal wave damper 61 at the bottom to partially cancel the longitudinal wave during an earthquake. A third bolt and nut group 33 is installed in the long strip holes 32 and the third mounting holes 11 to install the U-shaped part 3 movably on the steel column 1.

[0058] The housing 41 includes an upper housing and a lower housing. Several groups of mounting cavities 42 are annularly distributed on the opposite sides of the upper housing and the lower housing. One side of the mounting cavity 42 close to the first bolt and nut group 5 is an open structure. The transverse wave damper 44 is installed in the mounting cavity 42. A flange 43 is fixedly installed at the opposite ends of the upper housing and the lower housing to facilitate the installation of the upper housing and the lower housing.

[0059] The number of the mounting cavities 42 is the same as that of the transverse wave dampers 44 and they are arranged in one-to-one correspondence;

[0060] The connection between the upper housing and the lower housing through the flange 43 facilitates the installation of the transverse wave damper 44 in the mounting cavity 42, and finally realizes the installation of all the transverse wave dampers 44 in the housing 41.

[0061] At one end of the two longitudinal wave dampers 61 close to the U-shaped part 3, a top plate 62 is installed, and at the other end, a bottom plate 63 is installed. The top plate 62 and the bottom plate 63 are arranged in parallel. Several groups of fifth mounting holes 71 are opened on the bottom plate 63 and the support frame 7. A second bolt and nut group 64 is installed in the corresponding fifth mounting holes 71 to realize the disassembly and assembly between the longitudinal wave damping system 6 and the support frame 7.

[0062] Through the top plate 62 fixedly installed at one end of the longitudinal wave damper 61 close to the U-shaped part 3, the contact area between the damper and the bottom of the U-shaped part 3 can be increased, preventing the U-shaped part 3 from being damaged due to local stress during the generation of the longitudinal wave. The cooperation of several groups of fifth mounting holes 71 opened on the bottom plate 63 and the support frame 7 and the second bolt and nut group 64 facilitates the disassembly and assembly between the longitudinal wave damping system 6 and the support frame 7.

[0063] A limiting plate 13 is fixedly installed on one side of the steel column 1 close to the cross beam 2. The limiting plate 13 is placed between the U-shaped part 3 and the support frame 7.

[0064] Under normal conditions, the cross beam 2 is supported by the longitudinal wave damper 61 at the bottom, and there is enough clearance between the lowermost end of the U-shaped member 3 and the limit plate 13 to ensure the normal operation of the longitudinal wave damper 61. At the same time, during the up-and-down shaking of the cross beam 2, it can prevent the cross beam 2 from descending excessively and causing damage to the damper due to extrusion.

[0065] On one side of the steel column 1 close to the U-shaped member 3, a U-shaped plate 8 is fixedly installed. A number of groups of fourth bolt and nut sets 81 are installed at the edge of the U-shaped plate 8. The steel column 1 is provided with fourth installation holes 12 corresponding to the fourth bolt and nut sets 81. The U-shaped member 3 is placed between the two U-shaped plates 8 and the steel column 1. By placing the two U-shaped plates 8 outside the upper and lower ends of the U-shaped member 3, the tensile strength between the U-shaped member 3 and the steel column 1 can be improved.

[0066] In the present invention, the shear wave damper 44 has good elastic potential energy along the radial direction of the moving hole, and the longitudinal wave damper 61 has good elastic potential energy along the Y-axis direction; both of them are existing products, and their internal structures will not be described in detail here.

[0067] A shock absorption treatment method for a seismic connector of a prefabricated building steel frame structure includes at least the following steps:

[0068] Step S1: Process the steel column 1, the cross beam 2, the shear wave damping system 4, and the longitudinal wave damping system 6 in the factory and perform anti-corrosion treatment on the whole.

[0069] Step S2: After the foundation is formed, fix the steel column 1 on the foundation, then movably install the U-shaped member 3 on the steel column 1. The housing 41 of the shear wave damping system 4 is fixed by welding on the inner side of the U-shaped member 3, and the moving hole 46 and the first installation hole 22 are coaxially positioned to complete the installation of the shear wave damping system 4.

[0070] Step S3: Install the longitudinal wave damping system 6 on the support frame 7. The upper end of the longitudinal wave damper 61 supports the bottom of the U-shaped member 3, so that the first bolt and nut set 5 is placed in the middle of the long strip hole 32 to complete the installation of the longitudinal wave damping system 6.

[0071] Step S4: Insert the convex plate at one end of the avoidance groove 21 of the cross beam 2 into the moving groove 45, and make the first installation hole 22 and the moving hole 46 on the same axis. Then pass the first bolt and nut set 5 through the second installation hole 31, the first installation hole 22, and the moving hole 46. At the same time, the first bolt and nut set 5 is installed in a non-tightened state to ensure that the cross beam 2 can swing in the horizontal direction, and the node installation is completed.

[0072] Step S5: After the overall node connection is completed, perform anti-corrosion treatment on the node again, and then cover the node with a bellows to complete the treatment of the node.

[0073] Working principle: Fix the steel column 1 on the foundation, then movably install the U-shaped part 3 on the steel column 1. Weld and fix the housing 41 of the shear wave damping system 4 on the inner side (inside the opening of the U-shaped part 3) of the U-shaped part 3, and make the movable hole 46 and the first mounting hole 22 be coaxially positioned. Install the longitudinal wave damping system 6 on the support frame 7, and the upper end of the longitudinal wave damper 61 supports the bottom of the U-shaped part 3; Place the first bolt and nut group 5 at the middle position of the long slot 32, insert the convex plate at one end of the cross beam 2 close to the avoidance groove 21 into the movable slot 45, and make the first mounting hole 22 and the movable hole 46 be on the same axis. Then pass the first bolt and nut group 5 through the second mounting hole 31, the first mounting hole 22 and the movable hole 46. At the same time, install the first bolt and nut group 5 in a non-tightened state to ensure that the cross beam 2 can swing in the horizontal direction. After the node installation is completed, the building wall can be fixed on the cross beam 2;

[0074] As Figure 4 shown, when an earthquake occurs, if the direction of the shear wave generated is from C to F, at this time, the first bolt and nut group 5, the cross beam 2 and the wall for fixing the cross beam 2 will be squeezed in the direction of F by the action of the shear wave. At this time, the shear wave damper 44 on the F side dissipates the kinetic energy of the shear wave driving the cross beam 2 and the building on the cross beam 2. When the direction of the shear wave changes (from F to C), the shear wave damper 44 at C dissipates the kinetic energy of the shear wave driving the cross beam 2 and the building on the cross beam 2. When the direction of the shear wave changes to the direction from B to E, E to B or from D to A, A to D, the kinetic energy can be dissipated by the shear wave damper 44. Regardless of the direction of the shear wave, the shear wave can be dissipated of its energy. At the same time, during the generation of the longitudinal wave, the U-shaped part 3 drives the cross beam 2 and the longitudinal wave damping system 6 to move up and down, and the longitudinal wave damper 61 is used to dissipate the longitudinal wave energy of the cross beam 2.

[0075] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature disclosed in this specification or any new combination, as well as any new method or process step disclosed or any new combination.

Claims

1. An earthquake-resistant connector for the steel frame structure of prefabricated buildings, used for connecting cross beams and steel columns that are perpendicular to each other. Characterized in that, It includes a U-shaped part arranged on the side of the steel column close to the cross beam and moving along the Y-axis direction, a transverse wave damping system arranged inside the U-shaped part and connected to the U-shaped part and the cross beam respectively, and a longitudinal wave damping system arranged between the bottom of the U-shaped part and the steel column; The opening of the U-shaped part is arranged on the side away from the steel column.

2. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 1, Characterized in that, The transverse wave damping system includes a housing and several groups of transverse wave dampers. The housing is placed inside the U-shaped part, and an activity groove is opened on the side close to the inner wall of the U-shaped part; The housing is provided with a through activity hole along the Y-axis direction. Several groups of the transverse wave dampers are distributed circumferentially in the housing along the activity hole and are horizontally arranged. The axial direction of each group of transverse wave dampers is arranged along the radial direction of the activity hole.

3. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 2, Characterized in that, An avoidance groove is opened at one end of the cross beam close to the transverse wave damper. The cross beam is provided with a first installation hole along the Y-axis direction. The U-shaped part is provided with a second installation hole along the Y-axis direction. A first bolt and nut group is inserted into the first installation hole, the second installation hole and the activity hole; The head of the transverse wave damper is in contact with the outer wall of the first bolt and nut group. The outer diameter of the screw of the first bolt and nut group is adapted to the inner diameter of the first installation hole and is smaller than the inner diameters of the activity hole and the second installation hole.

4. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 2, Characterized in that, The longitudinal wave damping system includes at least two groups of longitudinal wave dampers arranged along the Y-axis direction. A support frame is installed on the side of the steel column close to the cross beam. The support frame is placed directly below the U-shaped part. The longitudinal wave dampers are arranged between the U-shaped part and the support frame. The inner size of the activity groove is larger than the size of the convex plate on the side of the cross beam close to the U-shaped part.

5. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 4, Characterized in that, A top plate is fixedly installed at one end of the longitudinal wave damper close to the U-shaped part, and a bottom plate is fixedly installed at the other end. Several groups of fifth installation holes are opened on the bottom plate and the support frame. A second bolt and nut group is installed in the corresponding fifth installation holes.

6. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 5, Characterized in that, A limiting plate is fixedly installed on the side of the steel column close to the cross beam. The limiting plate is placed between the U-shaped part and the support frame.

7. An earthquake-resistant connector for the steel frame structure of prefabricated buildings according to claim 1, Characterized in that, The U-shaped part is provided with several groups of long strip holes. Each group of long strip holes is long strip-shaped along the Y-axis direction; Several groups of third installation holes corresponding to the long strip holes are opened on the steel column. A third bolt and nut group is installed in the long strip holes and the third installation holes to install the U-shaped part on the steel column.

8. An earthquake-resistant connector for a prefabricated building steel frame structure according to claim 2, characterized in that, the housing includes an upper housing and a lower housing. A plurality of groups of installation cavities are annularly distributed on one side of the upper housing and the lower housing facing each other. One side of the installation cavity close to the first bolt-nut group is an open structure. The shear wave damper is installed in the installation cavity. A flange is fixedly installed at one end of the upper housing and the lower housing facing each other.

9. An earthquake-resistant connector for a prefabricated building steel frame structure according to claim 2, characterized in that, a U-shaped plate is fixedly installed on one side of the steel column close to the U-shaped part. A plurality of groups of fourth bolt-nut groups are installed on the edge of the U-shaped plate. The steel column is provided with fourth installation holes corresponding to the fourth bolt-nut groups. The U-shaped part is placed between the U-shaped plate and the steel column.

10. A damping method for an earthquake-resistant connector for a prefabricated building steel frame structure according to any one of claims 1-9, characterized in that, includes at least the following steps: Step S1: Process the steel column, cross beam, shear wave damping system and longitudinal wave damping system, and perform anti-corrosion treatment; Step S2: Install the shear wave damping system; After waiting for the foundation to be formed, fix the steel column on the foundation; The U-shaped part is movably installed on the steel column. The housing of the shear wave damping system is fixedly welded to the inner side of the U-shaped part, and the movable hole and the first installation hole are coaxially positioned to complete the installation of the shear wave damping system; Step S3: Install the longitudinal wave damping system: Install the longitudinal wave damping system on the support frame. The upper end of the longitudinal wave damper supports the bottom of the U-shaped part, so that the first bolt-nut group is placed in the middle of the long strip hole to complete the installation of the longitudinal wave damping system; Step S4: Insert the convex plate at one end of the cross beam close to the avoidance groove into the movable groove, and make the first installation hole and the movable hole on the same axis. Then pass the first bolt-nut group through the second installation hole, the first installation hole and the movable hole. At the same time, the first bolt-nut group is installed in a non-tightened state to ensure that the cross beam can swing in the horizontal direction, and the node installation is completed; Step S5: After the overall node connection is completed, perform anti-corrosion treatment on the node again, and then cover the node with a bellows to complete the treatment of the node.

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