Energy dissipation connection assembled concrete frame structure

Abstract

The present application relates to the technical field of building construction, and in particular to a kind of energy dissipation connection fabricated concrete frame structure, including prefabricated column, and with the prefabricated column connection assembly beam, it is characterized in that, prefabricated column side is equipped with column round web connecting device, and assembly beam end is equipped with beam round web connecting device;Column round web connecting device and beam round web connecting device all include concave arc surface, and the butt joint of two side arc surfaces forms cylindrical cavity, and damping mechanism is arranged in cylindrical cavity;First long hole is formed in two side arc surfaces, and first fastening bolt is arranged in first long hole, and damping mechanism is fixedly connected with first fastening bolt.When the connecting joint between prefabricated column and assembly beam rotates, it can be with the friction of two side arc surfaces energy dissipation, while increasing the rotation performance of joint.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an energy-dissipating connected prefabricated concrete frame structure. Background Technology

[0002] Precast concrete beams and columns are generally connected by methods such as grouting sleeves for reinforcing bars. The connection method is relatively complex. In the event of an earthquake, if the concrete at the beam end is damaged, crushed, or the reinforcing bars buckle, it will be detrimental to post-earthquake repair. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an energy-dissipating, connected prefabricated concrete frame structure.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] An energy-dissipating prefabricated concrete frame structure includes precast columns and assembled beams connected to the precast columns. A column circular web connecting device is installed on the side of the precast column, and a beam circular web connecting device is installed at the end of the assembled beam. Both the column circular web connecting device and the beam circular web connecting device include concave arc surfaces. The two arc surfaces meet to form a columnar cavity, and a damping mechanism is installed inside the columnar cavity. A first elongated hole is opened on each of the two arc surfaces, and a first fastening bolt is installed in the first elongated hole. The damping mechanism is fixedly connected to the first fastening bolt.

[0006] As a preferred embodiment, a further technical solution of the present invention is:

[0007] Preferably, the damping mechanism includes concentrically arranged inner column supports and outer ring supports, the outer ring supports are adapted to the cylindrical cavity, and damping units are arranged radially between the inner column supports and the outer ring supports;

[0008] The damping unit includes a support rod fixed to an inner column support. A first connecting rod is hinged to both sides of the support rod on the inner column support. A second connecting rod is hinged to the end of the first connecting rod. The end of the second connecting rod is hinged to the support rod. The first and second connecting rods on both sides form a quadrilateral structure. A third connecting rod is hinged between the hinge points of the first and second connecting rods on both sides. Support lugs are hinged to both sides of the outer end of the support rod. A fixed seat plate is provided between the ends of the support lugs. The fixed seat plate abuts against the inner side of the outer ring support. A first fastening bolt passes through the outer ring support and is fixed to the fixed seat plate. A spring is sleeved on the support rod between the second connecting rod and the support lugs.

[0009] Preferably, beam-column flange connecting devices are connected between the top and bottom surfaces of the column web connecting device and the beam web connecting device.

[0010] The beam-column flange connection device includes a first lower fixing plate and a first upper clamping plate fixed on the column web plate connection device. A connecting plate is clamped and fixed between the first lower fixing plate and the first upper clamping plate. A second lower fixing plate and a second upper clamping plate are clamped and fixed on the upper and lower sides of the connecting plate and fixed to the beam web plate connection device.

[0011] Preferably, the first lower fixing plate, the first upper clamping plate, and the connecting plate are all T-shaped plates.

[0012] Preferably, the through hole in the connecting plate for connecting with the first lower fixing plate and the first upper clamping plate is an elongated hole.

[0013] Preferably, the column web connection device and the beam web connection device have the same structure, including a C-shaped support body, with a stiffening plate provided in the middle of the inner side of the C-shaped support body, and the end of the stiffening plate is an arc shape adapted to the arc surface, with the arc surface located at the end of the C-shaped support body and the stiffening plate.

[0014] Preferably, a column foundation connection device is provided at the bottom of the precast column, which is used to fix the precast column to the foundation structure;

[0015] The column foundation connection device includes a bottom plate and a top plate arranged opposite each other. An irregularly shaped support is provided on the bottom plate, with the top of the irregularly shaped support abutting against the bottom surface of the top plate. A friction plate is provided on the bottom surface of the top plate that fits against the side of the irregularly shaped support. A C-shaped side plate is supported between the bottom plate and the top plate at the edge.

[0016] Preferably, the lower part of the irregular support body has a hollow structure, and a second elongated hole is opened opposite to the friction plate on the irregular support body. A second fastening bolt is installed in the second elongated hole to fasten the irregular support body and the friction plate.

[0017] Compared with the prior art, the present invention, which adopts the above technical solution, has the following outstanding features: when the connection node between the precast column and the assembled beam rotates, it can dissipate energy through friction on both sides of the arc surface, while increasing the rotation performance of the node; the web damping structure is formed by using a quadrilateral linkage structure, spring, fixed seat plate and outer ring support. When the node rotates, it is first compressed by the spring, and then buckled to dissipate energy based on the quadrilateral linkage structure, which can effectively reduce energy dissipation during earthquakes; under seismic action, the friction plate and the side of the irregular support body rub against each other, and with the cooperation of the second elongated hole structure, sliding friction can be generated to effectively increase the shear resistance of the precast column; the setting of the C-shaped side plates around the perimeter helps to transfer the axial force of the precast column. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the energy-dissipating connected prefabricated concrete frame structure in an embodiment of the present invention. Figure 1 ;

[0019] Figure 2This is a schematic diagram of the energy-dissipating connected prefabricated concrete frame structure in an embodiment of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the damping mechanism in an embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the damping mechanism in an embodiment of the present invention. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the cylindrical web plate connecting device in an embodiment of the present invention;

[0023] Figure 6 This is a structural schematic diagram of the beam-column flange connection device in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the column foundation connection device in an embodiment of the present invention. Figure 1 ;

[0025] Figure 8 This is a schematic diagram of the column foundation connection device in an embodiment of the present invention. Figure 2 .

[0026] Explanation of reference numerals in the attached drawings: 1. Precast column; 2. Assembled beam; 3. Column web connection device; 4. Beam web connection device; 5. Arc surface; 6. Damping mechanism; 7. First elongated hole; 8. First fastening bolt; 9. Inner column support; 10. Outer ring support; 11. Damping unit; 12. Support rod; 13. First connecting rod; 14. Second connecting rod; 15. Third connecting rod; 16. Support ear plate; 17. Fixed seat plate; 18. Spring; 19. First lower fixed plate; 20. First upper clamping plate; 21. Connecting plate; 22. Second lower fixed plate; 23. Second upper clamping plate; 24. C-shaped support body; 25. Rib plate; 26. Column foundation connection device; 27. Base plate; 28. Top plate; 29. ​​Irregularly shaped support body; 30. Friction plate; 31. C-shaped side plate; 32. Second elongated hole; 33. Second fastening bolt. Detailed Implementation

[0027] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0028] like Figures 1 to 8As shown in the figure, this embodiment provides an energy-dissipating prefabricated concrete frame structure, including a precast column 1 and an assembled beam 2 connected to the precast column 1. A column circular web plate connecting device 3 is installed on the side of the precast column 1, and a beam circular web plate connecting device 4 is installed at the end of the assembled beam 2. Both the column circular web plate connecting device 3 and the beam circular web plate connecting device 4 include a concave arc surface 5. The two arc surfaces 5 are joined together to form a columnar cavity, and a damping mechanism 6 is provided in the columnar cavity. A first elongated hole 7 is opened on both arc surfaces 5, and a first fastening bolt 8 is provided in the first elongated hole 7. The damping mechanism 6 is fixedly connected to the first fastening bolt 8. When the connection node between the precast column 1 and the assembled beam 2 rotates, energy can be dissipated by friction of the two arc surfaces 5, while increasing the rotation performance of the node.

[0029] In practice, the column web plate connecting device 3 can be installed and fixed to the precast column 1 by the pre-embedded bolts in the precast column 1; the beam web plate connecting device 4 can be installed and fixed to the assembly beam 2 by the pre-embedded bolts in the assembly beam 2.

[0030] The damping mechanism 6 includes a concentric inner column support 9 and an outer ring support 10. The outer ring support 10 is adapted to the cylindrical cavity. Damping units 11 are arranged radially between the inner column support 9 and the outer ring support 10.

[0031] The damping unit 11 includes a support rod 12 fixed to the inner column support 9. First connecting rods 13 are hinged to the inner column support 9 on both sides of the support rod 12. A second connecting rod 14 is hinged to the end of the first connecting rod 13, and the end of the second connecting rod 14 is hinged to the support rod 12. The first connecting rods 13 and the second connecting rod 14 on both sides form a quadrilateral structure. A third connecting rod 15 is hinged between the hinge points of the first connecting rods 13 and the second connecting rod 14 on both sides. Support ear plates 16 are hinged to both sides of the outer end of the support rod 12. A fixed seat plate 17 is provided between the ends of the support ear plates 16. Plate 17 abuts against the inner side of outer ring support 10. The first fastening bolt 8 passes through outer ring support 10 and is fixed to fixed seat plate 17. A round hole adapted to the first fastening bolt 8 can be opened on outer ring support 10. A spring 18 is sleeved on support rod 12 and located between second connecting rod 14 and support ear plate 16. The quadrilateral connecting rod structure, spring 18, fixed seat plate 17 and outer ring support 10 constitute a web plate damping structure. When the node rotates, it is first compressed by spring 18 and then buckled and dissipated based on quadrilateral connecting rod structure, which can effectively reduce energy dissipation in earthquakes.

[0032] During implementation, beam-column flange connecting devices are connected between the top and bottom surfaces of the column web connecting device 3 and the beam web connecting device 4.

[0033] The beam-column flange connection device includes a first lower fixing plate 19 and a first upper clamping plate 20 fixed on the column web plate connection device 3. A connecting plate 21 is clamped and fixed between the first lower fixing plate 19 and the first upper clamping plate 20. A second lower fixing plate 22 and a second upper clamping plate 23 are clamped and fixed on the upper and lower sides of the connecting plate 21 and fixed to the beam web plate connection device 4.

[0034] In practice, the first lower fixing plate 19, the first upper clamping plate 20, and the connecting plate 21 are all T-shaped plates. The through hole in the connecting plate 21 for connecting with the first lower fixing plate 19 and the first upper clamping plate 20 is an elongated hole.

[0035] In practice, the column web plate connecting device 3 and the beam web plate connecting device 4 have the same structure, including a C-shaped support body 24. A stiffening plate 25 is provided in the middle of the inner side of the C-shaped support body 24. The end of the stiffening plate 25 is an arc shape that matches the arc surface 5. The arc surface 5 is provided at the end of the C-shaped support body 24 and the stiffening plate 25. The first elongated hole 7 opened on the arc surface 5 is symmetrically arranged on both sides of the stiffening plate 25.

[0036] During implementation, a column foundation connection device 26 is provided at the bottom of the precast column 1. The column foundation connection device 26 is used to fix the precast column 1 to the foundation structure. Specifically, the fixing can be completed by pre-embedded bolts in the foundation structure.

[0037] like Figure 7 and Figure 8 As shown, the column foundation connection device 26 includes a bottom plate 27 and a top plate 28 arranged opposite each other. A shaped support 29 is provided on the bottom plate 27, with the top of the shaped support 29 abutting against the bottom surface of the top plate 28. A friction plate 30 is provided on the bottom surface of the top plate 28, which fits against the side of the shaped support 29. A C-shaped side plate 31 is supported between the bottom plate 27 and the top plate 28 at the edge. Figure 7 and Figure 8 (The C-shaped side plate 31 on the front side is not shown in the image). The arrangement of the C-shaped side plates 31 around the perimeter helps to transmit the axial force of the precast column 1.

[0038] In implementation, the cross-section of the irregular support 29 is a structure with the apex of two isosceles triangles joined together. The lower part of the irregular support 29 is hollow. The irregular support 29 and the friction plate 30 have a second elongated hole 32 opposite to each other. The second elongated hole 32 is provided with a second fastening bolt 33, thereby fastening the irregular support 29 and the friction plate 30. The top surface of the top plate 28 is provided with a pre-embedded plate for pre-embedding in the precast column 1. The bottom plate 27 is fixed to the foundation structure by pre-embedded bolts in the foundation structure. Under seismic action, the friction plate 30 and the irregular support 29 rub against each other on the side. With the cooperation of the second elongated hole 32 structure, sliding friction can be generated to effectively increase the shear resistance of the precast column 1.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.

Claims

1. An energy-dissipating prefabricated concrete frame structure, comprising precast columns and assembled beams connected to the precast columns, characterized in that, The precast column is equipped with a column web plate connecting device on its side, and the beam is equipped with a beam web plate connecting device at its end. Both the column web plate connecting device and the beam web plate connecting device include concave arc surfaces. After the two arc surfaces are joined together, a columnar cavity is formed. A damping mechanism is installed inside the columnar cavity. A first elongated hole is opened on both arc surfaces. A first fastening bolt is installed in the first elongated hole. The damping mechanism is fixedly connected to the first fastening bolt. The damping mechanism includes concentric inner column supports and outer ring supports. The outer ring supports are adapted to the cylindrical cavity, and damping units are arranged radially between the inner column supports and the outer ring supports. The damping unit includes a support rod fixed to an inner column support. A first connecting rod is hinged to both sides of the support rod on the inner column support. A second connecting rod is hinged to the end of the first connecting rod. The end of the second connecting rod is hinged to the support rod. The first and second connecting rods on both sides form a quadrilateral structure. A third connecting rod is hinged between the hinge points of the first and second connecting rods on both sides. Support lugs are hinged to both sides of the outer end of the support rod. A fixed seat plate is provided between the ends of the support lugs. The fixed seat plate abuts against the inner side of the outer ring support. A first fastening bolt passes through the outer ring support and is fixed to the fixed seat plate. A spring is sleeved on the support rod between the second connecting rod and the support lugs.

2. The energy-dissipating connected prefabricated concrete frame structure according to claim 1, characterized in that, Both the top and bottom surfaces of the column web connection device and the beam web connection device are connected by beam-column flange connection devices. The beam-column flange connection device includes a first lower fixing plate and a first upper clamping plate fixed on the column web plate connection device. A connecting plate is clamped and fixed between the first lower fixing plate and the first upper clamping plate. A second lower fixing plate and a second upper clamping plate are clamped and fixed on the upper and lower sides of the connecting plate and fixed to the beam web plate connection device.

3. The energy-dissipating connected prefabricated concrete frame structure according to claim 2, characterized in that, The first lower fixing plate, the first upper clamping plate, and the connecting plate are all T-shaped plates.

4. The energy-dissipating connected prefabricated concrete frame structure according to claim 2, characterized in that, The through hole in the connecting plate for connecting with the first lower fixing plate and the first upper clamping plate is an elongated hole.

5. The energy-dissipating connected prefabricated concrete frame structure according to claim 1, characterized in that, The column web connection device and the beam web connection device have the same structure, including a C-shaped support body. A stiffening plate is provided in the middle of the inner side of the C-shaped support body. The end of the stiffening plate is an arc shape that matches the arc surface. The arc surface is located at the end of the C-shaped support body and the stiffening plate.

6. The energy-dissipating connected prefabricated concrete frame structure according to claim 1, characterized in that, The precast column is equipped with a column foundation connection device at the bottom, which is used to fix the precast column to the foundation structure. The column foundation connection device includes a bottom plate and a top plate arranged opposite each other. An irregularly shaped support is provided on the bottom plate, with the top of the irregularly shaped support abutting against the bottom surface of the top plate. A friction plate is provided on the bottom surface of the top plate that fits against the side of the irregularly shaped support. A C-shaped side plate is supported between the bottom plate and the top plate at the edge.

7. The energy-dissipating connected prefabricated concrete frame structure according to claim 6, characterized in that, The lower part of the irregular support body is hollow. The irregular support body and the friction plate have a second elongated hole opposite each other. A second fastening bolt is installed in the second elongated hole to fasten the irregular support body and the friction plate.

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