Prefabricated assembly type second-order energy dissipation beam-column joint

Abstract

The utility model discloses a prefabricated assembly type second-order energy dissipation beam column joint which comprises pouring core area concrete, the pouring core area concrete is located at the connecting position of a reinforced concrete column and a reinforced concrete beam, and a column end connecting energy dissipation plate, a beam end connecting energy dissipation plate and a dog bone plate are arranged in the pouring core area concrete. The reinforced concrete column is connected with the column end connecting energy dissipation plate through the cross-shaped connecting plate, the reinforced concrete beam is connected with the beam end connecting energy dissipation plate through the cross-shaped connecting plate, and the beam end connecting energy dissipation plate is connected with the column end connecting energy dissipation plate through bolts. According to the prefabricated assembly type second-order energy dissipation beam column joint, it is guaranteed that the joint has enough energy dissipation capacity, replacement can be achieved after the joint is damaged, the construction period is shortened, and cost is saved.

Description

Technical Field

[0001] This utility model relates to a prefabricated assembled beam-column joint, and more particularly to a prefabricated assembled second-order energy-dissipating beam-column joint. Background Technology

[0002] Studies have found that beam-column joints are prone to damage under seismic loads and are difficult to restore after an earthquake. With the development of prefabricated construction, further research has been conducted on the seismic performance of joints: beam-column joints can be weakened by reducing the connecting components to prevent joint failure even if the connecting area is damaged. However, due to the complex connections in the core areas of some joints, replacement is not possible after joint failure. Although prefabricated construction shortens the construction period, ensuring good energy dissipation capacity of joints is crucial and requires further improvement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a prefabricated assembled second-order energy-dissipating beam-column joint, which ensures that the joint has sufficient energy dissipation capacity, can be replaced after the joint is damaged, shortens the construction cycle, and saves costs.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is to provide a prefabricated assembled second-order energy-dissipating beam-column joint, including pouring core area concrete, the core area concrete being located at the connection between reinforced concrete column and reinforced concrete beam, wherein the core area concrete is provided with column end connecting energy-dissipating plate, beam end connecting energy-dissipating plate and dog bone plate; the reinforced concrete column and column end connecting energy-dissipating plate are connected by cross connecting plate, the reinforced concrete beam and beam end connecting energy-dissipating plate are connected by cross connecting plate, and the beam end connecting energy-dissipating plate and column end connecting energy-dissipating plate are connected by bolts.

[0005] Furthermore, the core concrete pouring area is provided with two horizontally parallel column end connection energy dissipation plates and two vertically parallel beam end connection energy dissipation plates. The column end connection energy dissipation plates and beam end connection energy dissipation plates are provided with a cross on their outward-facing side. The cross is provided with a first bolt hole. One end of the cross connection plate is welded to the end plate on the beam and column. The other end of the cross connection plate is connected to the first bolt hole on the cross by bolts.

[0006] Furthermore, the beam end connecting energy-consuming plate and the column end connecting energy-consuming plate are provided with relatively aligned second bolt holes for bolts to pass through for connection, and the second bolt holes are elliptical bolt holes.

[0007] Furthermore, the dog bone plate is located in the cavity formed by the column end connecting energy dissipation plate and the beam end connecting energy dissipation plate. The dog bone plates are arranged in 3 rows and 3 columns. Three dog bone plates are set on each side of the front and rear rows to form a semi-enclosed structure with the opening facing inward. One dog bone plate is set on each side of the middle row.

[0008] Furthermore, the upper and lower ends of the dog bone plate and the column end are welded together with the energy-dissipating plate.

[0009] Compared with the prior art, this utility model has the following advantages: The prefabricated assembled second-order energy-dissipating beam-column joint provided by this utility model is connected by bolts. In the working state, energy is dissipated in the early stage through bolt friction. In the later stage, as the joint deforms, the energy-dissipating components (dog bone plates) inside the core area enter the working state. Since the joint is connected by bolts, it can be replaced if the joint is damaged. In addition, the use of bolted connections shortens the construction period. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the prefabricated assembled second-order energy-dissipating beam-column joint structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the concrete internal structure of the core area for pouring the beam-column joint of this utility model.

[0012] Figure 3 This is a schematic diagram of the beam-end connection energy-dissipating plate structure of the beam-column joint of this utility model;

[0013] Figure 4 This is a schematic diagram of the energy-dissipating plate structure connecting the column end of the beam-column joint of this utility model;

[0014] Figure 5 This is a schematic diagram of the dog-bone plate structure of the beam-column joint of this utility model;

[0015] Figure 6 This is a schematic diagram showing the distribution of the dog-bone plate within the concrete core area of ​​the beam-column joint of this utility model.

[0016] The diagram is marked as follows:

[0017] 1. Reinforced concrete column; 2. Cross-shaped connecting plate; 3. Reinforced concrete beam; 4. End plate; 5. Core area concrete pouring; 6. Bolt; 7. Beam end connection energy dissipation plate; 8. Column end connection energy dissipation plate; 9. Dog bone plate; 10. First bolt hole; 11. Second bolt hole; 12. Cross. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the prefabricated assembled second-order energy-dissipating beam-column joint structure of this utility model.

[0020] Please see Figure 1The prefabricated assembled second-order energy-dissipating beam-column joint provided by this utility model includes a reinforced concrete column 1, a cross-shaped connecting plate 2, a reinforced concrete beam 3, an end plate 4, a core area concrete 5, bolts 6, a beam end connecting energy-dissipating plate 7, a column end connecting energy-dissipating plate 8, and a dog-bone plate 9. The core area concrete 5 is located at the connection between the reinforced concrete column 1 and the reinforced concrete beam 3. The core area concrete 5 contains the column end connecting energy-dissipating plate 8, the beam end connecting energy-dissipating plate 7, and the dog-bone plate 9. The reinforced concrete column 1 and the column end connecting energy-dissipating plate 8 are connected by the cross-shaped connecting plate 2. The reinforced concrete beam 3 and the beam end connecting energy-dissipating plate 7 are connected by the cross-shaped connecting plate 2. The beam end connecting energy-dissipating plate 7 and the column end connecting energy-dissipating plate 8 are connected by bolts 6.

[0021] Please continue reading Figure 2 The prefabricated, assembled, second-order energy-dissipating beam-column joint provided by this utility model includes two horizontally parallel column-end energy-dissipating plates 8 and two vertically parallel beam-end energy-dissipating plates 7 within the poured core concrete area 5. A cross 12 is provided on the outward-facing side of the column-end energy-dissipating plates 8 and the beam-end energy-dissipating plates 7. Figure 3 and Figure 4 As shown; the cross 12 is provided with a first bolt hole 10, one end of the cross connecting plate 2 is welded to the end plate 4 on the beam column, and one end of the cross connecting plate 2 is connected to the first bolt hole 10 on the cross 12 by bolts 6.

[0022] In a preferred embodiment, the beam-end connecting energy-dissipating plate 7 and the column-end connecting energy-dissipating plate 8 are provided with aligned second bolt holes 11 for bolts 6 to pass through for connection. The second bolt holes 11 are elliptical bolt holes. The structure of the dog bone plate 9 of this utility model is as follows: Figure 5 As shown, the dog bone plate 9 is located in the cavity formed by the column end connecting energy dissipation plate 8 and the beam end connecting energy dissipation plate 7. The dog bone plates 9 are arranged in 3 rows and 3 columns. Three dog bone plates 9 are set on each side of the front and rear rows to form a semi-enclosed structure with the opening facing inward. One dog bone plate 9 is set on each side of the middle row. Figure 6 As shown. The upper and lower ends of the dog bone plate 9 are welded to the column end and connected to the energy dissipation plate 8.

[0023] The prefabricated, assembled, second-order energy-dissipating beam-column joint provided by this utility model has the following energy dissipation mechanism: Under seismic load, the first-order energy dissipation mainly offsets part of the seismic force through the frictional force between the bolts 6 and the energy-dissipating plates 7 and 8 connected to the beam end and column end, respectively. The bolt holes are elliptical. The second-order energy dissipation mainly occurs through the dog-bone plates 9 in the core area of ​​the joint. This design type is a strong-component, weak-joint joint; in the event of damage, the bolts 6 can be removed and replaced, achieving easy repair.

[0024] The prefabricated assembled second-order energy-dissipating beam-column joint provided by this utility model is processed as follows:

[0025] 1) During factory prefabrication, the dog-bone plate 9 of the core area of ​​the node is precisely positioned, and it is ensured that it is welded to the energy-dissipating plate 8 at the upper and lower column ends. The reinforced concrete column 1 and the end plate 4, as well as the reinforced concrete beam 3 and the end plate 4, are prefabricated together on site. The reinforced concrete column 1 and the reinforced concrete beam 3 are connected by the cross connecting plate 2, which is welded to the end plate 4. The cross connecting plate 2 is connected to the beam end energy-dissipating plate 7 and the column end energy-dissipating plate 8 by bolts 6. After on-site splicing, the core area concrete 5 is poured in a timely manner.

[0026] The prefabricated, assembled, second-order energy-dissipating beam-column joint provided by this utility model has the following advantages:

[0027] 1. This prefabricated, assembled, second-order energy-dissipating beam-column joint uses prefabricated components in the factory, and welding and bolting are used for on-site connection, which greatly improves the construction progress and has high construction efficiency.

[0028] 2. This prefabricated, assembled, second-order energy-dissipating beam-column joint, through on-site welding and bolt connection, reduces the amount of formwork used and labor output. Furthermore, this novel second-order energy-dissipating beam-column joint can be replaced if damaged, achieving cost savings.

[0029] 3. This prefabricated, assembled, second-order energy-dissipating beam-column joint, by dissipating energy through bolts and dog-bone plates, ensures energy dissipation under minor earthquakes through bolt friction and under major earthquakes through joint energy dissipation through the joint bolts and the dog-bone plates in the core area, thus giving this new type of joint more reliable stability.

[0030] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A prefabricated, assembled, second-order energy-dissipating beam-column joint, comprising a core area concrete (5) cast in, wherein the core area concrete (5) is located at the connection between a reinforced concrete column (1) and a reinforced concrete beam (3), characterized in that, The core concrete (5) is provided with column end connection energy dissipation plate (8), beam end connection energy dissipation plate (7) and dog bone plate (9); the reinforced concrete column (1) and column end connection energy dissipation plate (8) are connected by cross connection plate (2), the reinforced concrete beam (3) and beam end connection energy dissipation plate (7) are connected by cross connection plate (2), and the beam end connection energy dissipation plate (7) and column end connection energy dissipation plate (8) are connected by bolts (6).

2. The prefabricated assembled second-order energy-dissipating beam-column joint as described in claim 1, characterized in that, The concrete core area (5) is provided with two horizontally parallel column end connection energy dissipation plates (8) and two vertically parallel beam end connection energy dissipation plates (7). The column end connection energy dissipation plates (8) and beam end connection energy dissipation plates (7) are provided with crosses (12) on their outward side. The crosses (12) are provided with first bolt holes (10). One end of the cross connection plate (2) is welded to the end plate (4) on the beam and column. One end of the cross connection plate (2) is connected to the first bolt hole (10) on the cross (12) by bolts (6).

3. The prefabricated assembled second-order energy-dissipating beam-column joint as described in claim 2, characterized in that, The beam end connecting energy dissipation plate (7) and the column end connecting energy dissipation plate (8) are provided with relatively aligned second bolt holes (11) for bolts (6) to pass through for connection. The second bolt hole (11) is an elliptical bolt hole.

4. The prefabricated assembled second-order energy-dissipating beam-column joint as described in claim 2, characterized in that, The dog bone plate (9) is located in the cavity formed by the column end connecting energy dissipation plate (8) and the beam end connecting energy dissipation plate (7). The dog bone plate (9) is arranged in 3 rows and 3 columns. Three dog bone plates (9) are set on each side of the front and rear rows of dog bone plates (9) to form a semi-enclosed structure with the opening facing inward. One dog bone plate (9) is set on each side of the middle row of dog bone plates (9).

5. The prefabricated assembled second-order energy-dissipating beam-column joint as described in claim 1, characterized in that, The upper and lower ends of the dog bone plate (9) and the column end are welded together with the energy dissipation plate (8).

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