A prefabricated beam-column joint vibration reduction structure and its construction method

Abstract

This invention discloses a prefabricated beam-column joint vibration damping structure and construction method, relating to the field of prefabricated building construction technology. It includes a support structure, with a beam-column mechanism installed on one side of the outer wall of the support structure. A vibration damping mechanism is installed inside the support structure. The support structure includes a fixed column, with a set of reinforcing bars fixedly inserted inside. The outer wall of the fixed column has four rectangular openings to increase the stability between the beam-column mechanism and the support structure under the action of the reinforcing bars. The beam-column mechanism includes a beam and a column. During an earthquake, the beam and column can displace between the fixed frame and the fixed frame under the action of the damper, thereby offsetting most of the energy brought by the earthquake. Simultaneously, a rubber pad is installed between the fixed frame and the beam and column, which not only helps absorb the energy brought by the earthquake but also assists in the repositioning of the beam and column. Compared with traditional fixed beam-columns, this invention not only has good stability but also strong seismic performance.

Description

Technical Field

[0001] This invention relates to a prefabricated beam-column joint vibration reduction structure and construction method, belonging to the field of prefabricated building engineering technology. Background Technology

[0002] The construction industry is one of the pillar industries of my country's national economy. However, it remains a labor-intensive, traditional industry dominated by cast-in-place construction. With my country's economic development, the traditional extensive development model is no longer suitable for the country's demand for high-quality building products. my country needs to vigorously develop prefabricated buildings. Prefabricated steel structure buildings, as a new type of energy-saving and environmentally friendly building system, are hailed as one of the "green buildings" of the 21st century and represent a major development direction for promoting prefabricated buildings in my country. Energy dissipation and vibration reduction technology mainly involves adding energy dissipators or components to certain parts of the structure to provide additional stiffness or damping. Under seismic or wind loads, the energy input to the structure is dissipated through these components to reduce the structure's dynamic response, thereby better protecting the safety of the main structure. It is an effective, safe, economical, and increasingly mature engineering vibration reduction technology. Scientific investigations have shown that the reasonable application of vibration reduction structures at beam-column joints can reduce the damage to buildings caused by structural earthquakes, thus protecting and safeguarding people's lives and property to a certain extent.

[0003] In the prior art, such as Chinese Patent No. CN113431207B, a beam-column connection node for prefabricated buildings belongs to the field of prefabricated building technology. This beam-column connection node for prefabricated buildings includes: an outer box body with vertical sliding holes, and a column fixedly connected to the bottom wall of the outer box body; an inner box body with vertical sliding holes, and multiple side walls of the inner box body each having a vertical first sliding groove; a first slider fixedly connected to an L-shaped insert block, which has a first threaded hole inside; a threaded rod with a bolt head at one end, the bolt head being located at the top of the outer box body; and multiple sleeves, each with a connecting block fixedly connected to one edge near the inner box body, the connecting block having a vertical second sliding groove, and a crossbeam sleeved at the end of the sleeve away from the connecting block. This beam-column connection node for prefabricated buildings allows multiple crossbeams to be fixed simultaneously by tightening a single bolt rod, thus greatly saving assembly time. Furthermore, the connection of multiple crossbeams using connecting blocks and L-shaped insert blocks increases the strength of the connection.

[0004] In the aforementioned patent, although the device can fix multiple crossbeams simultaneously by tightening a single bolt rod, thus greatly saving assembly time, and uses connecting blocks and L-shaped inserts to connect multiple crossbeams to each other, thereby increasing the strength of the connection, the beam-column and the fixed column are fixedly connected. When an earthquake occurs, it cannot make corresponding lateral displacement according to the seismic waves, so its seismic resistance is poor. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated beam-column joint vibration reduction structure and its construction method, thereby addressing the problems identified in the prior art.

[0006] The technical solution of the present invention: a prefabricated beam-column joint vibration damping structure, comprising a support structure, a beam-column structure fixedly installed on the top outer wall of the support structure, the beam-column structure comprising a beam and a column, both ends of the beam and column being fixedly installed with connecting blocks, a fixed frame being movably fitted on the outer wall of the connecting block near the support structure, and a rubber pad being provided between the fixed frame and the connecting block, a second U-shaped frame being fixedly installed at the bottom of the connecting block, a first U-shaped frame being fixedly installed at the bottom of the beam and column, a first metal rod being fixedly inserted into the inner wall of the first U-shaped frame, a damper being movably fitted on the outer wall of the first metal rod, a second metal rod being movably inserted into one end of the outer wall of the damper, and the second metal rod being fixedly fitted on the second U-shaped frame.

[0007] In the aforementioned prefabricated beam-column joint vibration reduction structure, a soft pad is provided on the outer wall of the end of the connecting block that is movably sleeved in the fixed frame and connected to the beam-column.

[0008] In the aforementioned prefabricated beam-column joint vibration reduction structure, an L-shaped plate is fixedly installed at the bottom of the fixed frame by bolts, and the L-shaped plate is fixedly connected to one side of the outer wall of the support structure by bolts.

[0009] In the aforementioned prefabricated beam-column joint vibration reduction structure, the fixed frame is provided with connecting plates on both sides of the outer wall of the end near the support structure, and fixing holes are provided on both connecting plates.

[0010] In the aforementioned prefabricated beam-column joint vibration reduction structure, first fixing plates are fixedly installed on both sides of the outer wall of the beam and column, and ropes are provided on one side of the outer wall of each of the two first fixing plates, with the other end of each rope connected to a second fixing plate.

[0011] In the aforementioned prefabricated beam-column joint vibration reduction structure, the support structure includes a fixed column, and the top of the fixed column has four rectangular openings on its four sides. A second protrusion is fixedly installed on the end of the fixed frame near the fixed column, and the second protrusion is movably inserted into one of the rectangular openings.

[0012] In the aforementioned prefabricated beam-column joint vibration reduction structure, each of the remaining rectangular openings is movably inserted with a limiting plate, and each limiting plate is fixedly installed on the outer wall of the fixed column by bolts. Each limiting plate has a first protrusion on one side of its inner wall, and the first protrusion extends into the rectangular opening.

[0013] In the aforementioned prefabricated beam-column joint vibration damping structure, the support structure further includes a base. The fixed column is divided into an upper fixed column and a lower fixed column. The lower fixed column is fixedly connected to the base. A vibration damping mechanism is provided between the upper fixed column and the lower fixed column. The vibration damping mechanism includes two metal plates fixedly fixed to the bottom surface of the upper fixed column and the top surface of the lower fixed column, respectively. A cylinder is fixedly installed on one side of each of the two metal plates. A friction surface is fixedly installed on one side of each of the two cylinders. A spherical crown liner is provided between the two friction surfaces. A rubber cylinder is fixedly installed between the opposite sides of the two cylinders. The spherical crown liner is located inside the rubber cylinder.

[0014] In the aforementioned prefabricated beam-column joint vibration reduction structure, the bottom of the lower fixed column is provided with 4 rectangular slots, and the top of the base is fixedly inserted with 4 screws. Each screw is movably inserted into one rectangular slot and locked in place by a nut.

[0015] A construction method for a prefabricated beam-column joint vibration reduction structure includes the following steps:

[0016] S1: First, pour cement into the designated position on the base. After the cement has completely solidified, place the fixing column on the top of the base so that the four screws are inserted into the four rectangular slots and fixed with nuts. After fixing, pour cement into the fixing column again so that the fixing column is completely fixed on the top of the base.

[0017] S2: After the fixed column is completely fixed, the beam and column are lifted by a crane, and then the beam and column are inserted into the fixed column through one of the rectangular openings. Then, a support rod is installed at the bottom of the fixed column.

[0018] S3: Since the fixed column has 4 rectangular openings on its exterior, the corresponding beams and columns can be inserted into the fixed column through the rectangular openings as needed, and then the remaining rectangular openings can be sealed by the limiting plate.

[0019] S4: After the sealing is completed, cement can be poured on the top of the fixed column until the cement is completely solidified, so that the beam and column can be completely fixed to the fixed column.

[0020] S5: After all the fixed columns and beams are spliced ​​together, cut open the bottom of one of the fixed columns, and then fix the damping mechanism in the cut position with bolts until the damping mechanism is fixedly installed at the bottom of all the fixed columns.

[0021] S6: Finally, secure the ropes on both sides of the beam and column to the roof to complete the installation of the beam and column.

[0022] The beneficial effects of the present invention: Compared with the prior art, the present invention has the following advantages:

[0023] 1. In this invention, since the beams and columns are movably inserted into the fixed frame, and a damper is installed between the fixed frame and the beams and columns, and the fixed frame is poured into the fixed column with cement, it has strong stability. Therefore, when an earthquake occurs, under the action of the damper, the beams and columns can move between the fixed frames, thereby offsetting most of the energy brought by the earthquake. At the same time, a rubber pad is installed between the fixed frame and the beams and columns, which can not only help absorb the energy brought by the earthquake, but also help the beams and columns to reset. Compared with the traditional fixed beams and columns, this invention not only has good stability, but also has strong seismic performance.

[0024] 2. This invention provides a shock-absorbing mechanism at the bottom of the fixed column. The shock-absorbing mechanism consumes the horizontal load of the earthquake by moving horizontally between the spherical crown support plate and the friction surface, thereby reducing the sway of the fixed column and protecting the main body of the fixed column. In conjunction with the damper at the bottom of the beam and column, it can consume most of the horizontal load brought by the earthquake and reduce the sway amplitude of the fixed column, thereby achieving the purpose of efficient earthquake resistance.

[0025] 3. In this invention, since the shock absorption mechanism is fixed to the main body of the fixed column with bolts, the shock absorption mechanism can be disassembled and replaced according to the degree of damage after an earthquake, so that the seismic performance of the beam and column will not be weakened after the earthquake, thereby increasing the durability and practicality of the device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural view of the present invention;

[0027] Figure 2 This is a three-dimensional view of the structure on the other side of the present invention;

[0028] Figure 3 This is a three-dimensional structural view of the beam-column mechanism of the present invention;

[0029] Figure 4 This is a three-dimensional structural view of the bottom side of the beam-column mechanism of the present invention;

[0030] Figure 5 This is an exploded three-dimensional view of the beam-column mechanism of the present invention;

[0031] Figure 6 This is a three-dimensional structural view of the support mechanism of the present invention;

[0032] Figure 7 This is an exploded perspective view of the support mechanism of the present invention;

[0033] Figure 8 This is a three-dimensional structural view of the earthquake-resistant mechanism of the present invention.

[0034] In the diagram: 1. Support mechanism; 101. Fixed column; 102. Reinforcing bar; 103. Rectangular opening; 104. Rectangular groove; 105. Base; 106. Screw; 107. Limiting plate; 108. First protrusion; 2. Beam-column mechanism; 201. Beam-column; 202. Connecting block; 203. Fixing frame; 204. Rubber pad; 205. First U-shaped frame; 206. First metal rod; 207. Damper; 208. Second metal rod; 209. Second U-shaped frame; 210. Second protrusion; 211. First fixing plate; 212. Rope; 213. Second fixing plate; 214. Soft pad; 215. L-shaped plate; 216. Connecting plate; 217. Fixing hole; 3. Shock absorption mechanism; 301. Metal plate; 302. Cylinder; 303. Friction surface; 304. Spherical crown liner; 305. Rubber cylinder. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0036] An embodiment of the present invention: a prefabricated beam-column joint vibration reduction structure, such as... Figure 1-8 As shown, it includes a support structure 1, a beam-column structure 2 is provided on one side of the outer wall of the support structure 1, and a shock-absorbing mechanism 3 is provided inside the support structure 1.

[0037] The support structure 1 includes a fixed column 101, a set of steel bars 102 are fixedly inserted inside the fixed column 101, and four rectangular openings 103 are opened on the outer wall of the fixed column 101.

[0038] The beam-column mechanism 2 includes a beam-column 201. Connecting blocks 202 are provided on both sides of the outer wall of the beam-column 201. A fixed frame 203 is movably fitted on the outer wall of one of the two connecting blocks 202, and a rubber pad 204 is provided between the fixed frame 203 and the connecting block 202. A first U-shaped frame 205 is fixedly installed at the bottom of the beam-column 201. A first metal rod 206 is fixedly inserted into the inner wall of the first U-shaped frame 205. A damper 207 is movably fitted on the outer wall of the first metal rod 206. A second metal rod 208 is movably inserted into one end of the outer wall of the damper 207. The outer wall of the second metal rod 208 is fixedly fitted on the second U-shaped frame 209, and the second U-shaped frame 209 is fixedly installed at the bottom of the fixed frame 203 that is movably fitted with the connecting block 202. When an earthquake occurs, a horizontal load is generated. At this time, the beam and column 201 will slide within the fixed frame 203 to offset the horizontal load brought by the earthquake. Meanwhile, the damper 207 at the bottom plays the role of shock absorption and dissipation, which can minimize the impact when the building is impacted, thereby achieving the effect of earthquake resistance. In addition, a rubber pad 204 is installed between the beam and column 201 and the fixed frame 203. Under the action of the rubber pad 204, not only can the impact force between the beam and column 201 and the fixed frame 203 be reduced, thereby achieving the effect of earthquake resistance, but the beam and column 201 can also be reset.

[0039] A second protrusion 210 is fixedly installed on one side of the outer wall of the fixed frame 203, and the second protrusion 210 is movably inserted into the inner surface wall of one of the rectangular openings 103.

[0040] according to Figure 1 , Figure 2 and Figures 6-8 As shown, the shock absorption mechanism 3 includes two metal plates 301. A cylinder 302 is fixedly installed on one side of each metal plate 301. A friction surface 303 is fixedly installed on one side of each cylinder 302. A spherical cap liner 304 is positioned between the opposite sides of the two friction surfaces 303. A rubber cylinder 305 is fixedly installed between the opposite sides of the two cylinders 302. When an earthquake occurs, a horizontal load is generated. The base 105, fixed to the ground, will move horizontally with the earthquake vibration. At this time, the spherical cap liner 304 will move laterally between the two friction surfaces 303 to counteract the horizontal load caused by the earthquake. This minimizes the swaying amplitude of the fixed column 101, achieving a seismic resistance effect. Furthermore, the spherical shape of the friction surfaces facilitates the repositioning of the spherical cap liner 304.

[0041] according to Figure 1 , Figure 2 and Figure 6 , Figure 7 As shown, the two metal plates 301 are fixedly installed inside the top and bottom of the fixed column 101 by bolts.

[0042] according to Figures 1-5 As shown, first fixing plates 211 are fixedly installed on both sides of the outer wall of the beam and column 201. Ropes 212 are provided on one side of the outer wall of each of the two first fixing plates 211. A second fixing plate 213 is provided at one end of the outer wall of each of the two ropes 212. The ropes 212 can be fixed to the roof, thereby generating an upward pulling force on the beam and column 201 (from the figure, it is a pulling force to the outward). This not only improves the load-bearing capacity of the beam and column 201, but also reduces the amplitude of the sway of the beam and column 201, thereby minimizing the damage caused to the beam and column 201 when it sways, and thus improving the service life of the beam and column 201.

[0043] according to Figures 1-5 As shown, the outer wall of the two connecting blocks 202 near the fixed frame 203 is provided with a soft pad 214. The soft pad 214 can prevent the beam and column 201 from colliding directly with the fixed frame 203, thereby creating a certain buffering effect and increasing the seismic resistance of the beam and column 201.

[0044] according to Figures 1-5 As shown, an L-shaped plate 215 is fixedly installed at the bottom of the fixed frame 203 by bolts, and the L-shaped plate 215 is fixedly connected to one side of the outer wall of the fixed column 101 by bolts. The L-shaped plate 215 can not only facilitate the insertion of the beam and column 201 into the fixed frame 203, but also increase the firmness between the fixed frame 203 and the fixed column 101.

[0045] according to Figures 1-5 As shown, connecting plates 216 are provided on both sides of the outer wall of the fixed frame 203. Two fixing holes 217 are opened on one side of the outer wall of the two connecting plates 216. Bolts can pass through the fixing holes 217 to fix the fixed frame 203 to one side of the outer wall of the fixed column 101, which can increase the stability between the fixed frame 203 and the fixed column 101.

[0046] according to Figure 1 , Figure 2 and Figure 6 , Figure 7 As shown, three of the four rectangular openings 103 have movably inserted limiting plates 107 on their inner surfaces. Each limiting plate 107 is fixedly installed on the outer surface of the fixing column 101 by bolts. Each limiting plate 107 has a first protrusion 108 on one side of its inner surface. The limiting plates 107 can seal the rectangular openings 103, which facilitates subsequent cement pouring and prevents cement from flowing out of the rectangular openings 103. At the same time, the first protrusion 108 can increase the contact area between the limiting plates 107 and the cement, thereby increasing the stability between the limiting plates 107 and the cement and allowing the limiting plates 107 to be firmly fixed on the outer surface of the fixing column 101.

[0047] according to Figure 1 , Figure 2 and Figure 6 , Figure 7 As shown, the bottom of the fixing post 101 has four rectangular slots 104, and the bottom of the fixing post 101 is provided with a base 105. Four screws 106 are fixedly inserted into the top of the base 105, and each screw 106 is movably inserted into the four rectangular slots 104. The base 105 can be cemented to the ground. At this time, the fixing post 101 is placed on the top of the base 105, and the four screws 106 are inserted into the four rectangular openings 103 respectively. Then, it is fixed with nuts, and finally fixed with cement. In this way, the fixing post 101 can be firmly fixed to the ground, increasing the stability of the fixing post 101.

[0048] The working principle of the entire mechanism is as follows: During construction, the base 105 is first poured with concrete (a type of ultra-high performance UHPC concrete) at the designated position. After the concrete has completely dried and hardened, the fixing column 101 is placed on top of the base 105, so that the four screws 106 are respectively inserted into the inner surface of the four rectangular slots 104 and fixed with nuts. After the fixing is completed, a larger mold is fixed around the lower fixing column 101, and then concrete is poured into the mold. After the concrete has completely hardened, the mold is removed, so that the lower fixing column 101... 1. After the fixed column 101 is completely fixed to the top of the base 105, the fixed frame 203 is lifted by a crane. Then, the fixed frame 203 is inserted into the inside of the fixed column 101 through the rectangular opening 103. Bolts are then passed through the fixing holes 217 to fix the fixed frame 203 to one side of the outer wall of the fixed column 101. Then, according to the actual site conditions, the fixed frame 203 is inserted on the four sides of the fixed column 101. Then, the remaining rectangular openings 103 are sealed by the limiting plate 107. After sealing, concrete is poured on the top of the fixed column 101. After the concrete has completely hardened, L-shaped plates 215 are directly bolted to the fixed frame 203 and the fixed column 101 to make the connection between the fixed frame 203 and the fixed column 101 more stable. Then, the beam and column 201 are lifted by a crane. First, rubber pads 204 are placed inside the fixed frame 203, and then the beam and column 201 are inserted into the fixed frame 203. Then, soft pads 214 are placed on the outer wall of the connecting block 202. Finally, the damper 207 (a type of viscous damper) is fixed to the bottom of the beam and column 201 and the fixed frame 203 through the reserved holes. Following the above method, connect all beams and columns 201 to the fixed columns 101. Finally, fix the ropes 212 on both sides of the beams and columns 201 to the roof. This will increase the stability of the beams and columns 201, thus completing the installation of the beams and columns. After all the fixed columns 101 are connected to the beams and columns 201, cut open the bottom of one of the fixed columns 101 and fix the shock-absorbing mechanism 3 to the cut position with bolts. Continue until the bottom of all the fixed columns 101 is fixed with the shock-absorbing mechanism 3, thus completing the installation of the entire beam and column 201.

[0049] When an earthquake occurs, a horizontal load is generated. The base 105, fixed to the ground, will shift horizontally with the earthquake vibration. At this time, the spherical cap liner 304 will shift laterally between the two friction surfaces 303 to counteract the horizontal load caused by the earthquake, thereby minimizing the swaying amplitude of the fixed column 101 and achieving an earthquake-resistant effect. Simultaneously, the spherical shape of the friction surfaces facilitates the repositioning of the spherical cap liner 304. When the fixed column 101 sways, the beam-column 201 will slide within the fixed frame 203. This design offsets the horizontal load caused by the earthquake. Simultaneously, the damper 207 at the bottom acts as a shock absorber, minimizing the impact on the building and thus achieving earthquake resistance. Furthermore, a rubber pad 204 is installed between the beam / column 201 and the fixed frame 203. Under the action of the rubber pad 204, not only is the impact force between the beam / column 201 and the fixed frame 203 reduced, thus achieving earthquake resistance, but it also allows the beam / column 201 to return to its original position. The soft pad 214 prevents the beam / column 201 from contacting the fixed frame. The direct collision of beams 203 and 203 creates a buffering effect, thereby increasing the seismic resistance of beam 201. When beam 201 sways, rope 212 exerts an upward pulling force on it, which not only increases its load-bearing capacity but also reduces the amplitude of swaying, minimizing damage and extending its service life. Since the damping mechanism 3 is bolted to the fixed column... Since the main components of 101 are connected, after an earthquake, the damping mechanism 3 can be disassembled and replaced according to the degree of damage. At the same time, the most vulnerable parts of the damping mechanism 3 are the friction surface 303 and the spherical crown liner 304. Both the friction surface 303 and the spherical crown liner 304 are detachable and easy to replace. This not only reduces the cost, but also ensures that the seismic performance of the beam and column 201 is not weakened after the earthquake, thereby increasing the durability and practicality of the device. In summary, this solves the problems mentioned in the background.

Claims

1. A prefabricated beam-column joint vibration reduction structure, characterized in that: The system includes a support structure (1), on which a beam-column structure (2) is fixedly installed. The beam-column structure (2) includes a beam-column (201), and connecting blocks (202) are fixedly installed at both ends of the beam-column (201). A fixing frame (203) is movably fitted on the outer wall of the connecting block (202) near the support structure (1), and a rubber pad (204) is provided between the fixing frame (203) and the connecting block (202). A second U-shaped frame (209) is fixedly installed at the bottom, and a first U-shaped frame (205) is fixedly installed at the bottom of the beam and column (201). A first metal rod (206) is fixedly inserted into the inner wall of the first U-shaped frame (205), and a damper (207) is movably sleeved on the outer wall of the first metal rod (206). A second metal rod (208) is movably inserted into one end of the outer wall of the damper (207), and the second metal rod (208) is fixedly sleeved on the second U-shaped frame (209). A soft pad (214) is provided on the outer wall of the end of the connecting block (202) that is movably fitted in the fixed frame (203) and connected to the beam and column (201). The beam and column (201) are fixedly installed on both sides of the outer wall of the first fixing plate (211), and a rope (212) is provided on one side of the outer wall of each of the two first fixing plates (211). The other end of the rope (212) is connected to a second fixing plate (213). The support mechanism (1) includes a fixed column (101), and four rectangular openings (103) are provided on the four sides of the top of the fixed column (101). A second protrusion (210) is fixedly provided on the end of the fixed frame (203) near the fixed column (101), and the second protrusion (210) is movably inserted into one of the rectangular openings (103). Each of the remaining rectangular openings (103) is movably inserted with a limiting plate (107), and each limiting plate (107) is fixedly installed on the outer wall of the fixed column (101) by bolts. Each limiting plate (107) has a first protrusion (108) on one side of its inner wall, and the first protrusion (108) extends into the rectangular opening (103).

2. The prefabricated beam-column joint vibration reduction structure according to claim 1, characterized in that: The bottom of the fixed frame (203) is fixedly installed with an L-shaped plate (215) by bolts, and the L-shaped plate (215) is fixedly connected to one side of the outer wall of the support mechanism (1) by bolts.

3. The prefabricated beam-column joint vibration reduction structure according to claim 1, characterized in that: The fixed frame (203) is provided with connecting plates (216) on both sides of the outer wall of the end near the support mechanism (1), and fixing holes (217) are provided on the two connecting plates (216).

4. The prefabricated beam-column joint vibration reduction structure according to claim 1, characterized in that: The support structure (1) also includes a base (105). The fixed column (101) is divided into an upper fixed column and a lower fixed column. The lower fixed column is fixedly connected to the base (105). A shock-absorbing mechanism (3) is provided between the upper fixed column and the lower fixed column. The shock-absorbing mechanism (3) includes two metal plates (301) fixed on the bottom surface of the upper fixed column and the top surface of the lower fixed column respectively. A cylinder (302) is fixedly installed on the opposite side of the two metal plates (301). A friction surface (303) is fixedly installed on the opposite side of the two cylinders (302). A spherical crown liner (304) is provided between the two friction surfaces (303). A rubber cylinder (305) is fixedly installed between the opposite sides of the two cylinders (302). The spherical crown liner (304) is located inside the rubber cylinder (305).

5. A prefabricated beam-column joint vibration reduction structure according to claim 4, characterized in that: The bottom of the lower fixed column is provided with four rectangular slots (104), and four screws (106) are fixedly inserted into the top of the base (105). Each screw (106) is movably inserted into one rectangular slot (104) and locked in place by a nut.

6. A construction method for a prefabricated beam-column joint vibration reduction structure as described in claim 5, characterized in that: Includes the following steps: S1: First, pour cement into the base (105) at the designated position. After the cement has completely solidified, place the fixing column (101) on the top of the base (105) so that the four screws (106) are inserted into the four rectangular slots (104) respectively and fixed with nuts. After the fixing is completed, pour cement into the fixing column so that the fixing column (101) is completely fixed on the top of the base (105). S2: After the fixed column (101) is completely fixed, the beam column (201) is lifted by a crane, and then the beam column (201) is inserted into the fixed column (101) through one of the rectangular openings (103). Then, a support rod is set at the bottom of the fixed column (101). S3: Since the fixed column (101) has four rectangular openings (103) on its exterior, the corresponding beams and columns (201) can be inserted into the fixed column (101) through the rectangular openings (103) as needed, and then the remaining rectangular openings (103) can be sealed by the limiting plate (107). S4: After the sealing is completed, pour cement on the top of the fixed column (101) until the cement is completely solidified, so that the beam-column (201) and the fixed column (101) can be completely fixed. S5: After all the fixed columns (101) and beams (201) are spliced ​​together, cut open the bottom of one of the fixed columns (101) and then fix the damping mechanism (3) at the cut position with bolts until the damping mechanism (3) is fixedly installed at the bottom of all the fixed columns (101). S6: Finally, fix the ropes (212) on both sides of the beam (201) to the roof to complete the installation of the beam.

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