A connecting structure of a prefabricated reinforced concrete column and beam and a construction method thereof
By using components such as circumferential clamp steel plates, vertical H-shaped short steel bars, and bolt anchor heads in the connection structure between precast reinforced concrete columns and beams, the problems of large reinforcement anchorage and complex construction in traditional connections are solved, achieving the effects of simplified construction, reduced costs, and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HAINAN UNIV
- Filing Date
- 2023-04-26
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional reinforced concrete column-beam connection structures involve large amounts of steel reinforcement anchorage, cumbersome on-site construction, and high steel consumption, resulting in high construction costs and increased difficulty.
The connection structure of precast reinforced concrete columns and beams is adopted. By setting circumferential clamping steel plates, vertical H-shaped short steel and precast column end plates on the lower and upper precast reinforced concrete columns, the steel bars are connected by bolt anchor heads and horizontal reinforcing plates, and a reliable connection is achieved by concrete pouring.
It simplifies the construction process, reduces steel consumption, improves the reliability and safety of connections, and reduces the cost of node construction.
Smart Images
Figure CN116556520B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of prefabricated building construction, and in particular to a connection structure and construction method for precast reinforced concrete columns and beams. Background Technology
[0002] Reinforced concrete structures are favored by construction companies due to their superior seismic performance and are currently the most common building structure in my country. The design and construction of the connection between reinforced concrete columns and beams is often a challenge in such projects. Reinforced concrete columns are mostly cast-in-place, where the steel frame is first erected, and then concrete is poured into the frame using a grouting method. After a period of curing, the reinforced concrete column is complete. The long preparation time of cast-in-place reinforced concrete columns, preventing subsequent construction steps from proceeding until completion, slows down the construction process.
[0003] Reinforced concrete columns are often anchored to reinforced concrete beams. This method involves anchoring the longitudinal reinforcement of the beam into the column before pouring the concrete at the joint. The disadvantages of this method are: when there are many longitudinal reinforcements in the beam or column, the anchoring reinforcement is dense, the anchoring workload is large, and on-site construction difficulty increases. When connecting reinforced concrete columns to steel-concrete composite beams or steel beams, multiple auxiliary components are usually required, leading to increased steel consumption and cost in the joint structure. Therefore, providing a convenient, safe, reliable, and low-cost joint structure for precast reinforced concrete columns that is compatible with various beam types is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0004] This invention provides a joint structure and construction method for precast reinforced concrete columns that are convenient to construct, safe, reliable, and low in cost, and adaptable to various beams.
[0005] The technical problems to be solved are: the large amount of steel reinforcement anchorage, cumbersome on-site construction, and large steel consumption in the traditional reinforced concrete column-beam connection structure.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention discloses a connection structure between a precast reinforced concrete column and a beam, comprising a lower precast reinforced concrete column, an upper precast reinforced concrete column, and a beam disposed on one side of the lower precast reinforced concrete column; the upper ends of the lower and upper precast reinforced concrete columns are provided with circumferential clamping steel plates, and the lower ends are provided with vertical H-shaped short steel and precast column end plates, and the columns are internally equipped with longitudinal reinforcement bars. The top of the circumferential clamp steel plate is welded with a precast column top plate, and a lower horizontal reinforcing plate and an upper horizontal reinforcing plate are provided inside. The edges of the lower horizontal reinforcing plate and the upper horizontal reinforcing plate are provided with steel bar through holes, and the middle of the lower horizontal reinforcing plate, the upper horizontal reinforcing plate and the precast column top plate are provided with circular through holes. The flange plate of the vertical H-shaped short steel is welded with studs, and the upper part of the vertical H-shaped short steel is embedded in the corresponding lower precast reinforced concrete column and upper precast reinforced concrete column. The precast column end plate is welded to the vertical H-shaped short steel, and the upper surface of the precast column end plate is provided with bolt anchor heads; the lower end of the column longitudinal reinforcement is anchored to the precast column end plate by bolt anchor heads, and the upper end passes through the steel bar through holes in the lower horizontal reinforcement plate and the upper horizontal reinforcement plate in sequence and is anchored to the upper horizontal reinforcement plate by bolt anchor heads. The vertical H-shaped short steel of the upper precast reinforced concrete column is welded to the top plate of the precast column of the lower precast reinforced concrete column. The area connecting the lower precast reinforced concrete column and the upper precast reinforced concrete column is filled with concrete.
[0007] The present invention discloses a connection structure between a precast reinforced concrete column and a beam. Furthermore, the depth to which the vertical H-shaped short steel is embedded in the lower precast reinforced concrete column should not be less than 0.4m, and the length extending out of the lower precast reinforced concrete column should not be less than 0.4m.
[0008] The present invention discloses a connection structure between a precast reinforced concrete column and a beam. Further, the precast column end plate is welded to a vertical H-shaped short steel bar, the position of which corresponds to the depth at which the vertical H-shaped short steel bar is embedded in the precast reinforced concrete column; a bolt anchor head is welded to the upper surface of the precast column end plate, the position of which corresponds to the longitudinal reinforcement of the column.
[0009] The present invention discloses a connection structure between a precast reinforced concrete column and a beam. Furthermore, the positions of the circular through holes in the lower horizontal reinforcing plate, the upper horizontal reinforcing plate, and the top plate of the precast column are axially aligned in the vertical direction, and their areas are all not less than 0.5 times the cross-sectional area of the precast reinforced concrete column.
[0010] This invention discloses a connection structure between a precast reinforced concrete column and a beam. Further, when the beam is a reinforced concrete beam, transverse H-shaped short steel bars are welded to the outer wall of the circumferential clamping steel plate; the lower horizontal reinforcing plate corresponds to the lower flange of the transverse H-shaped short steel bar; the upper horizontal reinforcing plate corresponds to the upper flange of the transverse H-shaped short steel bar; the upper row of reinforcing bars of the reinforced concrete beam is welded to the upper surface of the upper flange of the transverse H-shaped short steel bar, and the lower row of reinforcing bars is welded to the upper surface of the lower flange of the transverse H-shaped short steel bar.
[0011] This invention discloses a connection structure between a precast reinforced concrete column and a beam. Further, when the beam is a steel-concrete composite beam, the steel section inside the steel-concrete composite beam is welded to the outer wall of the circumferential clamping steel plate; the position of the lower horizontal reinforcing plate corresponds to the bottom horizontal steel plate of the steel section; the position of the upper horizontal reinforcing plate corresponds to the top horizontal steel plate of the steel section; the steel section is an H-beam or a rectangular steel section; and the periphery of the steel section is filled with beam-internal concrete.
[0012] This invention discloses a connection structure between a precast reinforced concrete column and a beam. Further, when the beam is a steel beam, the steel beam inside the steel beam is welded to the outer wall of the circumferential clamping steel plate; the position of the lower horizontal reinforcing plate corresponds to the bottom horizontal steel plate of the steel beam; the position of the upper horizontal reinforcing plate corresponds to the top horizontal steel plate of the steel beam; the steel beam is an H-beam or a rectangular steel beam.
[0013] This invention discloses a method for constructing a connection structure between a precast reinforced concrete column and a beam, comprising the following steps when the beam is a reinforced concrete beam: Step 1: Weld studs to the outer wall of the flange plate of the vertical H-shaped short steel. Complete the welding of the vertical H-shaped short steel and studs before leaving the factory. Step 2: Weld the precast column end plate onto the vertical H-shaped short steel, with its position corresponding to the depth to which the vertical H-shaped short steel is inserted into the precast reinforced concrete column; Step 3: Weld bolt anchor heads onto the upper surface of the precast column end plate, with their positions corresponding to the column longitudinal reinforcement. Step 4: Weld the transverse H-shaped short steel to the outer wall of the circumferential clamp steel plate. Weld the lower horizontal reinforcing plate and the upper horizontal reinforcing plate inside the circumferential clamp steel plate. The position of the lower horizontal reinforcing plate corresponds to the lower flange steel plate of the transverse H-shaped short steel, and the position of the upper horizontal reinforcing plate corresponds to the upper flange steel plate of the transverse H-shaped short steel. Weld the precast column top plate to the top of the circumferential clamp steel plate. Before leaving the factory, complete the welding of the circumferential clamp steel plate with the lower horizontal reinforcing plate, the upper horizontal reinforcing plate, the transverse H-shaped short steel and the precast column top plate. Step 5: First, insert the lower end of the column longitudinal reinforcement into the bolt anchor head for anchoring. Then, set the column stirrups. The upper end passes through the steel bar through holes in the lower and upper horizontal reinforcing plates in sequence and is anchored to the upper horizontal reinforcing plate through the bolt anchor head, thus completing the steel reinforcement frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column, and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column. Step 7: Weld the vertical H-shaped short steel of the upper precast reinforced concrete column to the precast column top plate of the lower precast reinforced concrete column. Step 8: Pour concrete from the grouting port into the connection area between the lower and upper precast reinforced concrete columns using a perimeter grouting method. Step 9: Weld the upper row of reinforcing bars of the reinforced concrete beam to the upper surface of the upper flange of the transverse H-shaped short steel, and weld the lower row of reinforcing bars of the reinforced concrete beam to the upper surface of the lower flange of the transverse H-shaped short steel. Then, install beam stirrups and pour concrete into the beam to form a complete beam-column joint.
[0014] This invention discloses a method for constructing a connection structure between a precast reinforced concrete column and a beam, which includes the following steps when the beam is a steel-concrete composite beam: Step 1: Weld studs to the outer wall of the flange plate of the vertical H-shaped short steel. Complete the welding of the vertical H-shaped short steel and studs before leaving the factory. Step 2: Weld the precast column end plate onto the vertical H-shaped short steel, with its position corresponding to the depth to which the vertical H-shaped short steel is inserted into the precast reinforced concrete column; Step 3: Weld bolt anchor heads onto the upper surface of the precast column end plate, with their positions corresponding to the column longitudinal reinforcement; Step 4: Weld the lower horizontal reinforcing plate and the upper horizontal reinforcing plate into the circumferential clamping steel plate. The distance between the lower surface of the lower horizontal reinforcing plate and the upper surface of the upper horizontal reinforcing plate is the same as the height of the steel in the steel-concrete beam. The precast column top plate is welded to the top of the circumferential clamping steel plate. The welding of the circumferential clamping steel plate to the lower horizontal reinforcing plate, the upper horizontal reinforcing plate and the precast column top plate is completed before leaving the factory. Step 5: First, insert the lower end of the column longitudinal reinforcement into the bolt anchor head for anchoring. Then, set the column stirrups. The upper end passes through the steel bar through holes in the lower and upper horizontal reinforcing plates in sequence and is anchored to the upper horizontal reinforcing plate through the bolt anchor head, thus completing the steel reinforcement frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column, and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column. Step 7: Weld the vertical H-shaped short steel of the upper precast reinforced concrete column to the precast column top plate of the lower precast reinforced concrete column. Step 8: Pour concrete from the grouting port into the connection area between the lower and upper precast reinforced concrete columns; Step 9: Weld the steel section to the outer wall of the circumferential clamp steel plate, with the top horizontal steel plate corresponding to the upper horizontal reinforcing plate and the bottom horizontal steel plate corresponding to the lower horizontal reinforcing plate. Then pour concrete into the beam to form a complete beam-column joint.
[0015] This invention discloses a method for constructing a connection structure between a precast reinforced concrete column and a beam. When the beam is a steel beam, the method includes the following steps: Step 1: Weld studs to the outer wall of the flange plate of the vertical H-shaped short steel. Complete the welding of the vertical H-shaped short steel and studs before leaving the factory. Step 2: Weld the precast column end plate onto the vertical H-shaped short steel, with its position corresponding to the depth to which the vertical H-shaped short steel is inserted into the precast reinforced concrete column; Step 3: Weld bolt anchor heads onto the upper surface of the precast column end plate, with their positions corresponding to the column longitudinal reinforcement; Step 4: Weld the lower horizontal reinforcing plate and the upper horizontal reinforcing plate into the circumferential clamping steel plate. The distance between the lower surface of the lower horizontal reinforcing plate and the upper surface of the upper horizontal reinforcing plate is the same as the height of the steel section in the steel beam. The precast column top plate is welded to the top of the circumferential clamping steel plate. The welding of the circumferential clamping steel plate to the lower horizontal reinforcing plate, the upper horizontal reinforcing plate and the precast column top plate is completed before leaving the factory. Step 5: Insert the lower end of the column longitudinal reinforcement into the bolt anchor head for anchoring, then set the column stirrups, with the upper end passing through the through holes of the reinforcing bars in the lower and upper horizontal reinforcing plates in sequence and anchored to the upper horizontal reinforcing plate through the bolt anchor head, thus completing the steel frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column, and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column. Step 7: Weld the vertical H-shaped short steel of the upper precast reinforced concrete column to the precast column top plate of the lower precast reinforced concrete column. Step 8: Pour concrete from the grouting port into the connection area between the lower and upper precast reinforced concrete columns; Step 9: Weld the steel section to the outer wall of the circumferential clamp steel plate, with the top horizontal steel plate corresponding to the upper horizontal reinforcing plate and the bottom horizontal steel plate corresponding to the lower horizontal reinforcing plate, thus completing the beam-column connection structure.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, the vertical H-shaped short steel at the lower end of the upper precast reinforced concrete column is welded to the end plate of the lower precast reinforced concrete column. Grouting is then injected from the grouting port into the connection area between the upper and lower precast columns, thus completing the connection between the upper and lower precast concrete columns. The outer wall of the vertical H-shaped short steel flange is equipped with studs to increase the adhesion between the vertical H-shaped short steel and the concrete. This connection method between the upper and lower precast concrete columns makes the connection between the upper and lower columns more reliable and improves the overall structural safety. 2. The outer wall of the circumferential clamp plate on the precast reinforced concrete column of the present invention can be directly connected to the steel-concrete composite beam and the steel beam without adding other connecting parts, saving steel and reducing the cost of node construction; 3. The connection structure between the precast reinforced concrete column and the beam of the present invention, when the beam is a reinforced concrete beam, involves welding transverse H-shaped short steel bars to the outer wall of the circumferential clamping plate at the upper end of the precast reinforced concrete beam. The upper row of reinforcing bars of the reinforced concrete beam is welded to the upper surface of the upper flange plate of the transverse H-shaped short steel bars, and the lower row of reinforcing bars is welded to the upper surface of the lower flange plate of the transverse H-shaped short steel bars. Then, beam stirrups are installed and concrete is poured into the beam to complete the connection between the precast reinforced concrete column and the reinforced concrete beam. This connection method overcomes the problems of large anchorage of the longitudinal reinforcement of the beam in the reinforced concrete column and construction difficulties in the traditional connection process between reinforced concrete beam and reinforced concrete column.
[0017] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the connection structure between a precast reinforced concrete column and a beam when the outer wall of the circumferential clamp plate is connected to the beam in the connection structure of the present invention. Figure 2 This is a schematic diagram of the vertical H-shaped short steel used in the precast reinforced concrete column in the connection structure of the present invention; Figure 3 This is a schematic diagram of the lower precast reinforced concrete column structure in the connection structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between a precast reinforced concrete column and a reinforced concrete beam, in which H-shaped short steel is welded to the outside of the circumferential clamping steel plate, the longitudinal reinforcement of the upper beam is welded to the upper surface of the upper flange plate of the H-shaped short steel, and the longitudinal reinforcement of the lower beam is welded to the upper surface of the lower flange plate of the H-shaped short steel. Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 6 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle BB section; Figure 7 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle CC section; Figure 8 yes Figure 4 Schematic diagram of the cross-sectional structure of the middle DD; Figure 9 This is a schematic diagram of the connection structure between the reinforced concrete column and the steel-concrete beam when steel is welded to the outer surface of the circumferential clamping steel plate in the connection structure of the present invention. Figure 10 This is a schematic diagram of the connection structure between the reinforced concrete column and the steel beam when steel is welded to the outer surface of the circumferential clamping steel plate in the connection structure of the present invention.
[0019] Figure label: 1. Column longitudinal reinforcement; 2.1. Lower precast reinforced concrete column; 2.2. Upper precast reinforced concrete column; 3.1. Lower horizontal reinforcing plate; 3.2. Upper horizontal reinforcing plate; 4. Reinforcing bar through hole; 5. Circumferential clamping steel plate; 6. Bolt anchor head; 7. Weld; 8. Vertical H-shaped short steel; 9. Grouting port; 10. Column stirrup; 11. Horizontal H-shaped short steel; 12. Beam longitudinal reinforcement; 13. Reinforced concrete beam; 14. Beam stirrup; 15. Precast column top plate; 16. Precast column end plate; 17. Stud; 18. Steel-concrete beam; 19. Steel section; 20. Steel section beam; 21. Concrete inside the beam; 22. Circular through hole; 23. Beam. Detailed Implementation
[0020] like Figure 1-10 As shown, this invention discloses a connection structure and construction method for precast reinforced concrete columns and beams. The connection structure includes a lower precast reinforced concrete column 2.1, an upper precast reinforced concrete column 2.2, and a beam 23 located on one side of the lower precast reinforced concrete column 2.1. Both the lower precast reinforced concrete column 2.1 and the upper precast reinforced concrete column 2.2 are provided with circumferential clamping steel plates 5 at their upper ends and vertical H-shaped short steel bars 8 and precast column end plates 16 at their lower ends, and are internally equipped with column longitudinal reinforcement bars 1.
[0021] A precast column top plate 15 is welded to the top of the circumferential clamp steel plate 5. Inside, there are a lower horizontal reinforcing plate 3.1 and an upper horizontal reinforcing plate 3.2. The edges of the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 are provided with steel bar through holes 4. The positions of the steel bar through holes 4 on the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 are axially aligned in the vertical direction and correspond to the column longitudinal reinforcement 1. The middle of the lower horizontal reinforcing plate 3.1, the middle of the upper horizontal reinforcing plate 3.2 and the middle of the precast column top plate 15 are all provided with circular through holes 22. The circular through holes 22 are axially aligned in the vertical direction and their areas are not less than 0.5 times the cross-sectional area of the precast reinforced concrete column.
[0022] The outer wall of the flange plate of the vertical H-shaped short steel 8 is welded with studs 17. The upper part of the vertical H-shaped short steel 8 is embedded in the corresponding lower precast reinforced concrete column 2.1 and upper precast reinforced concrete column 2.2, and the embedment depth should not be less than 0.4m, and the length extending out of the precast reinforced concrete column should not be less than 0.4m.
[0023] The precast column end plate 16 is welded to the vertical H-shaped short steel 8, and its position corresponds to the depth at which the vertical H-shaped short steel 8 is embedded in the precast reinforced concrete column; the upper surface of the precast column end plate 16 is welded with bolt anchor heads 6, and their positions correspond to the column longitudinal reinforcement 1.
[0024] The lower end of the column longitudinal reinforcement 1 is inserted into the bolt anchor head 6 and anchored to the precast column end plate 16. The upper end passes through the steel bar through hole 4 in the lower horizontal reinforcement plate 3.1 and the upper horizontal reinforcement plate 3.2 in sequence and is anchored to the upper horizontal reinforcement plate 3.2 through the bolt anchor head 6.
[0025] The vertical H-shaped short steel 8 of the upper precast reinforced concrete column 2.2 is welded to the precast column top plate 15 of the lower precast reinforced concrete column 2.1 through weld 7.
[0026] The concrete in the connection area between the lower precast reinforced concrete column 2.1 and the upper precast reinforced concrete column 2.2 is injected through the grouting port 9 using a barrier grouting method. Example
[0027] When beam 23 is a reinforced concrete beam 13, transverse H-shaped short steel 11 is welded to the outer wall of the circumferential clamping steel plate 5; the position of the lower horizontal reinforcing plate 3.1 corresponds to the lower flange steel plate of the transverse H-shaped short steel 11; the position of the upper horizontal reinforcing plate 3.2 corresponds to the upper flange steel plate of the transverse H-shaped short steel 11; the longitudinal reinforcement 12 of the upper row of beams of the reinforced concrete beam 13 is welded to the upper surface of the upper flange plate of the transverse H-shaped short steel 11, and the longitudinal reinforcement 12 of the lower row of beams is welded to the upper surface of the lower flange plate of the transverse H-shaped short steel 11.
[0028] The construction method is as follows: Step 1: Weld studs 17 to the outer wall of the flange plate of the vertical H-shaped short steel 8. The welding of the vertical H-shaped short steel 8 and studs 17 is completed before leaving the factory.
[0029] Step 2: Weld the precast column end plate 16 onto the vertical H-shaped short steel 8, with its position corresponding to the depth to which the vertical H-shaped short steel 8 is inserted into the precast reinforced concrete column.
[0030] Step 3: Weld bolt anchor heads 6 onto the upper surface of the precast column end plate 16, with their positions corresponding to the column longitudinal reinforcement 1.
[0031] Step 4: Weld the transverse H-shaped short steel 11 to the outer wall of the circumferential clamp steel plate 5. Weld the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 to the inside of the circumferential clamp steel plate 5. The position of the lower horizontal reinforcing plate 3.1 corresponds to the lower flange steel plate of the transverse H-shaped short steel 11, and the position of the upper horizontal reinforcing plate 3.2 corresponds to the upper flange steel plate of the transverse H-shaped short steel 11. Weld the precast column top plate 15 to the top of the circumferential clamp steel plate 5. Before leaving the factory, complete the welding of the circumferential clamp steel plate 5 with the lower horizontal reinforcing plate 3.1, the upper horizontal reinforcing plate 3.2, the transverse H-shaped short steel 11, and the precast column top plate 15.
[0032] Step 5: Insert the lower end of the column longitudinal reinforcement 1 into the bolt anchor head 6 for anchoring. Then, install the column stirrups 10, with the upper end passing through the steel bar through holes 4 in the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 in sequence, and anchoring them to the upper horizontal reinforcing plate 3.2 through the bolt anchor head 6, thus completing the steel reinforcement frame of the precast reinforced concrete column.
[0033] Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column 2.1. Repeat steps 1 to 5 to obtain the upper precast reinforced concrete column 2.2. Step 7: Weld the vertical H-shaped short steel 8 of the upper precast reinforced concrete column 2.2 to the precast column top plate 15 of the lower precast reinforced concrete column 2.1.
[0034] Step 8: Pour concrete from grouting port 9 into the connection area between the lower precast reinforced concrete column 2.1 and the upper precast reinforced concrete column 2.2 using a barrier grouting method.
[0035] Step 9: Weld the upper row of reinforcing bars of the reinforced concrete beam 13 to the upper surface of the upper flange plate of the transverse H-shaped short steel 11, and weld the lower row of reinforcing bars of the reinforced concrete beam 13 to the upper surface of the lower flange plate of the transverse H-shaped short steel 11. Then, install the beam stirrups 14 and pour the concrete 21 inside the beam for curing to form a complete beam-column joint. Example
[0036] The difference from Embodiment 1 is that when beam 23 is a steel-concrete composite beam 18, the steel 19 inside the steel-concrete composite beam 18 is welded to the outer wall of the circumferential clamping steel plate 5; the position of the lower horizontal reinforcing plate 3.1 corresponds to the bottom horizontal steel plate of the steel 19; the position of the upper horizontal reinforcing plate 3.2 corresponds to the top horizontal steel plate of the steel 19; the steel 19 can be an H-beam or a rectangular steel; the outer perimeter of the steel 19 is filled with beam-internal concrete 21.
[0037] The construction method is as follows: Step 1: Weld studs 17 to the outer wall of the flange plate of the vertical H-shaped short steel 8. The welding of the vertical H-shaped short steel 8 and studs 17 is completed before leaving the factory.
[0038] Step 2: Weld the precast column end plate 16 onto the vertical H-shaped short steel 8, with its position corresponding to the depth to which the vertical H-shaped short steel 8 is inserted into the precast reinforced concrete column.
[0039] Step 3: Weld bolt anchor heads 6 onto the upper surface of the precast column end plate 16, with their positions corresponding to the column longitudinal reinforcement 1.
[0040] Step 4: Weld the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 into the circumferential clamping steel plate 5. The distance between the lower surface of the lower horizontal reinforcing plate 3.1 and the upper surface of the upper horizontal reinforcing plate 3.2 is the same as the height of the steel section 19 inside the steel-concrete beam 18. The precast column top plate 15 is welded to the top of the circumferential clamping steel plate 5. Before leaving the factory, the welding of the circumferential clamping steel plate 5 to the lower horizontal reinforcing plate 3.1, the upper horizontal reinforcing plate 3.2 and the precast column top plate 15 is completed.
[0041] Step 5: Insert the lower end of the column longitudinal reinforcement 1 into the bolt anchor head 6 for anchoring. Then, install the column stirrups 10, with the upper end passing through the steel bar through holes 4 in the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 in sequence, and anchoring them to the upper horizontal reinforcing plate 3.2 through the bolt anchor head 6, thus completing the steel reinforcement frame of the precast reinforced concrete column.
[0042] Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column 2.1. Repeat steps 1 to 5 to obtain the upper precast reinforced concrete column 2.2. Step 7: Weld the vertical H-shaped short steel 8 of the upper precast reinforced concrete column 2.2 to the precast column top plate 15 of the lower precast reinforced concrete column 2.1.
[0043] Step 8: Pour concrete from the grouting port 9 into the connection area between the lower precast reinforced concrete column 2.1 and the upper precast reinforced concrete column 2.2.
[0044] Step 9: Weld the steel section 19 to the outer wall of the circumferential clamp steel plate 5. The top horizontal steel plate corresponds to the upper horizontal reinforcing plate 3.2, and the bottom horizontal steel plate corresponds to the lower horizontal reinforcing plate 3.1. Then pour the concrete 21 inside the beam for curing to form a complete beam-column joint. Example
[0045] The difference from Embodiment 1 is that when beam 23 is a steel beam 20, the steel beam 19 inside the steel beam 20 is welded to the outer wall of the circumferential clamping steel plate 5; the position of the lower horizontal reinforcing plate 3.1 corresponds to the bottom horizontal steel plate of the steel beam 19; the position of the upper horizontal reinforcing plate 3.2 corresponds to the top horizontal steel plate of the steel beam 19; the steel beam 19 can be an H-beam or a rectangular steel beam.
[0046] The construction method is as follows: Step 1: Weld studs 17 to the outer wall of the flange plate of the vertical H-shaped short steel 8. The welding of the vertical H-shaped short steel 8 and studs 17 is completed before leaving the factory.
[0047] Step 2: Weld the precast column end plate 16 onto the vertical H-shaped short steel 8, with its position corresponding to the depth to which the vertical H-shaped short steel 8 is inserted into the precast reinforced concrete column.
[0048] Step 3: Weld bolt anchor heads 6 onto the upper surface of the precast column end plate 16, with their positions corresponding to the column longitudinal reinforcement 1.
[0049] Step 4: Weld the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 into the circumferential clamping steel plate 5. The distance between the lower surface of the lower horizontal reinforcing plate 3.1 and the upper surface of the upper horizontal reinforcing plate 3.2 is the same as the height of the steel section 19 inside the steel section beam 20. The precast column top plate 15 is welded to the top of the circumferential clamping steel plate 5. Before leaving the factory, the welding of the circumferential clamping steel plate 5 to the lower horizontal reinforcing plate 3.1, the upper horizontal reinforcing plate 3.2 and the precast column top plate 15 is completed.
[0050] Step 5: Insert the lower end of the column longitudinal reinforcement 1 into the bolt anchor head 6 for anchoring. Then, install the column stirrups 10, with the upper end passing through the steel bar through holes 4 in the lower horizontal reinforcing plate 3.1 and the upper horizontal reinforcing plate 3.2 in sequence, and anchoring them to the upper horizontal reinforcing plate 3.2 through the bolt anchor head 6, thus completing the steel reinforcement frame of the precast reinforced concrete column.
[0051] Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column 2.1. Repeat steps 1 to 5 to obtain the upper precast reinforced concrete column 2.2.
[0052] Step 7: Weld the vertical H-shaped short steel 8 of the upper precast reinforced concrete column 2.2 to the precast column top plate 15 of the lower precast reinforced concrete column 2.1.
[0053] Step 8: Pour concrete from the grouting port 9 into the connection area between the lower precast reinforced concrete column 2.1 and the upper precast reinforced concrete column 2.2.
[0054] Step 9: Weld the steel section 19 to the outer wall of the circumferential clamping steel plate 5. The top horizontal steel plate corresponds to the upper horizontal reinforcing plate 3.2, and the bottom horizontal steel plate corresponds to the lower horizontal reinforcing plate 3.1, thus completing the beam-column connection structure.
[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims
1. A connection structure between a precast reinforced concrete column and a beam, characterized in that: It includes a lower precast reinforced concrete column (2.1), an upper precast reinforced concrete column (2.2), and a beam (23) located on one side of the lower precast reinforced concrete column (2.1); the upper ends of the lower precast reinforced concrete column (2.1) and the upper precast reinforced concrete column (2.2) are provided with circumferential clamping steel plates (5), and the lower ends are provided with vertical H-shaped short steel (8) and precast column end plates (16), and the interiors are provided with column longitudinal reinforcement (1); The top of the circumferential clamp steel plate (5) is welded with a precast column top plate (15), and a lower horizontal reinforcing plate (3.1) and an upper horizontal reinforcing plate (3.2) are provided inside. The edges of the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) are provided with steel bar through holes (4). The middle of the lower horizontal reinforcing plate (3.1), the upper horizontal reinforcing plate (3.2) and the precast column top plate (15) are provided with circular through holes (22). The flange of the vertical H-shaped short steel (8) is welded with studs (17), and the upper part of the vertical H-shaped short steel (8) is embedded in the corresponding lower precast reinforced concrete column (2.1) and upper precast reinforced concrete column (2.2); The precast column end plate (16) is welded to the vertical H-shaped short steel (8), and the upper surface of the precast column end plate (16) is provided with bolt anchor heads (6). The lower end of the column longitudinal reinforcement (1) is anchored to the precast column end plate (16) by bolt anchor head (6), and the upper end passes through the steel bar through hole (4) in the lower horizontal reinforcement plate (3.1) and the upper horizontal reinforcement plate (3.2) in sequence and is anchored to the upper horizontal reinforcement plate (3.2) by bolt anchor head (6); The vertical H-shaped short steel (8) of the upper precast reinforced concrete column (2.2) is welded to the precast column top plate (15) of the lower precast reinforced concrete column (2.1); The connection area between the lower precast reinforced concrete column (2.1) and the upper precast reinforced concrete column (2.2) is filled with concrete; When the beam (23) is a steel-concrete composite beam (18) or a steel beam (20), the steel beams (19) inside the steel-concrete composite beam (18) and the steel beams (20) are welded to the outer wall of the circumferential clamping steel plate (5); the lower horizontal reinforcing plate (3.1) is located at the bottom horizontal steel plate of the steel beam (19); the upper horizontal reinforcing plate (3.2) is located at the top horizontal steel plate of the steel beam (19); the steel beam (19) is an H-beam or a rectangular steel beam.
2. The connection structure between a precast reinforced concrete column and a beam according to claim 1, characterized in that: The depth to which the vertical H-shaped short steel (8) is embedded in the lower precast reinforced concrete column (2.1) shall not be less than 0.4m, and the length extending out of the lower precast reinforced concrete column (2.1) shall not be less than 0.4m.
3. The connection structure between a precast reinforced concrete column and a beam according to claim 1, characterized in that: The precast column end plate (16) is welded to the vertical H-shaped short steel (8), and its position corresponds to the depth at which the vertical H-shaped short steel (8) is embedded in the precast reinforced concrete column (2); the upper surface of the precast column end plate (16) is welded with bolt anchor heads (6), the position of which corresponds to the column longitudinal reinforcement (1).
4. The connection structure between a precast reinforced concrete column and a beam according to claim 1, characterized in that: The positions of the lower horizontal reinforcing plate (3.1), the upper horizontal reinforcing plate (3.2), and the circular through hole (22) in the precast column top plate are aligned axially in the vertical direction, and their areas are not less than 0.5 times the cross-sectional area of the precast reinforced concrete column (2).
5. The connection structure between a precast reinforced concrete column and a beam according to claim 1, characterized in that: When the beam (23) is a reinforced concrete beam (13), a transverse H-shaped short steel (11) is welded to the outer wall of the circumferential clamp steel plate (5); the position of the lower horizontal reinforcing plate (3.1) corresponds to the lower flange steel plate of the transverse H-shaped short steel (11); the position of the upper horizontal reinforcing plate (3.2) corresponds to the upper flange steel plate of the transverse H-shaped short steel (11); the upper row of reinforcing bars of the reinforced concrete beam (13) is welded to the upper surface of the upper flange plate of the transverse H-shaped short steel (11), and the lower row of reinforcing bars is welded to the upper surface of the lower flange plate of the transverse H-shaped short steel (11).
6. The connection structure between a precast reinforced concrete column and a beam according to claim 1, characterized in that: When the beam (23) is a steel-concrete composite beam (18), the steel section (19) is surrounded by concrete (21) poured inside the beam.
7. A method for constructing the connection structure of the precast reinforced concrete column and beam as described in claim 5, wherein when the beam (23) is a reinforced concrete beam (13), the method is characterized in that, Includes the following steps: Step 1: Weld studs (17) to the outer wall of the flange plate of the vertical H-shaped short steel (8). The welding of the vertical H-shaped short steel (8) and studs (17) is completed before leaving the factory. Step 2: Weld the precast column end plate (16) onto the vertical H-shaped short steel (8), the position of which corresponds to the depth of the vertical H-shaped short steel (8) inserted into the precast reinforced concrete column (2); Step 3: Weld bolt anchor heads (6) onto the upper surface of the precast column end plate (16), with their positions corresponding to the column longitudinal reinforcement (1); Step 4: Weld the transverse H-shaped short steel (11) to the outer wall of the circumferential clamp steel plate (5), and weld the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) inside the circumferential clamp steel plate (5). The position of the lower horizontal reinforcing plate (3.1) corresponds to the lower flange steel plate of the transverse H-shaped short steel (11), and the position of the upper horizontal reinforcing plate (3.2) corresponds to the upper flange steel plate of the transverse H-shaped short steel (11). The precast column top plate (15) is welded to the top of the circumferential clamp steel plate (5). Before leaving the factory, the welding of the circumferential clamp steel plate (5) with the lower horizontal reinforcing plate (3.1), the upper horizontal reinforcing plate (3.2), the transverse H-shaped short steel (11), and the precast column top plate (15) is completed. Step 5: First, insert the lower end of the column longitudinal reinforcement (1) into the bolt anchor head (6) for anchoring. Then, set the column stirrups (10). The upper end passes through the steel bar through hole (4) in the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) in sequence and is anchored to the upper horizontal reinforcing plate (3.2) through the bolt anchor head (6) to complete the steel reinforcement frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column (2.1), and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column (2.2). Step 7: Weld the vertical H-shaped short steel (8) of the upper precast reinforced concrete column (2.2) to the precast column top plate (15) of the lower precast reinforced concrete column (2.1); Step 8: Pour concrete from the grouting port (9) into the connection area between the lower precast reinforced concrete column (2.1) and the upper precast reinforced concrete column (2.2) using a surrounding grouting method; Step 9: Weld the upper row of reinforcing bars of the reinforced concrete beam (13) to the upper surface of the upper flange of the transverse H-shaped short steel (11), and weld the lower row of reinforcing bars of the reinforced concrete beam (13) to the upper surface of the lower flange of the transverse H-shaped short steel (11). Then, set the beam stirrups (14) and pour the concrete (21) inside the beam to form a complete beam-column joint.
8. A method for constructing the connection structure of the precast reinforced concrete column and beam as described in claim 6, wherein when the beam (23) is a steel-concrete composite beam (18), characterized in that, Includes the following steps: Step 1: Weld studs (17) to the outer wall of the flange plate of the vertical H-shaped short steel (8). The welding of the vertical H-shaped short steel (8) and studs (17) is completed before leaving the factory. Step 2: Weld the precast column end plate (16) onto the vertical H-shaped short steel (8), the position of which corresponds to the depth of the vertical H-shaped short steel (8) inserted into the precast reinforced concrete column (2); Step 3: Weld bolt anchor heads (6) onto the upper surface of the precast column end plate (16), with their positions corresponding to the column longitudinal reinforcement (1); Step 4: Weld the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) into the circumferential clamping steel plate (5). The distance between the lower surface of the lower horizontal reinforcing plate (3.1) and the upper surface of the upper horizontal reinforcing plate (3.2) is the same as the height of the steel section (19) in the steel-concrete beam (18). The precast column top plate (15) is welded to the top of the circumferential clamping steel plate (5). Before leaving the factory, the welding of the circumferential clamping steel plate (5) to the lower horizontal reinforcing plate (3.1), the upper horizontal reinforcing plate (3.2) and the precast column top plate (15) is completed. Step 5: First, insert the lower end of the column longitudinal reinforcement (1) into the bolt anchor head (6) for anchoring. Then, set the column stirrups (10). The upper end passes through the steel bar through hole (4) in the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) in sequence and is anchored to the upper horizontal reinforcing plate (3.2) through the bolt anchor head (6) to complete the steel reinforcement frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column (2.1), and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column (2.2). Step 7: Weld the vertical H-shaped short steel (8) of the upper precast reinforced concrete column (2.2) to the precast column top plate (15) of the lower precast reinforced concrete column (2.1); Step 8: Pour concrete from the grouting port (9) into the connection area between the lower precast reinforced concrete column (2.1) and the upper precast reinforced concrete column (2.2); Step 9: Weld the steel section (19) to the outer wall of the circumferential clamp steel plate (5), with the top horizontal steel plate corresponding to the upper horizontal reinforcing plate (3.2) and the bottom horizontal steel plate corresponding to the lower horizontal reinforcing plate (3.1). Then pour the concrete (21) inside the beam to form a complete beam-column joint.
9. A method for constructing a precast reinforced concrete column-beam connection structure according to any one of claims 1-4, wherein when the beam (23) is a steel beam (20), the method is characterized in that, The steps include the following: Step 1: Weld studs (17) to the outer wall of the flange plate of the vertical H-shaped short steel (8). The welding of the vertical H-shaped short steel (8) and studs (17) is completed before leaving the factory. Step 2: Weld the precast column end plate (16) onto the vertical H-shaped short steel (8), the position of which corresponds to the depth of the vertical H-shaped short steel (8) inserted into the precast reinforced concrete column (2); Step 3: Weld bolt anchor heads (6) onto the upper surface of the precast column end plate (16), with their positions corresponding to the column longitudinal reinforcement (1); Step 4: Weld the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) into the circumferential clamping steel plate (5). The distance between the lower surface of the lower horizontal reinforcing plate (3.1) and the upper surface of the upper horizontal reinforcing plate (3.2) is the same as the height of the steel section (19) inside the steel section beam (20). The precast column top plate (15) is welded to the top of the circumferential clamping steel plate (5). Before leaving the factory, the welding of the circumferential clamping steel plate (5) with the lower horizontal reinforcing plate (3.1), the upper horizontal reinforcing plate (3.2) and the precast column top plate (15) is completed. Step 5: Insert the lower end of the column longitudinal reinforcement (1) into the bolt anchor head (6) for anchoring, and then set the column stirrups (10). The upper end passes through the steel bar through hole (4) in the lower horizontal reinforcing plate (3.1) and the upper horizontal reinforcing plate (3.2) in sequence, and is anchored to the upper horizontal reinforcing plate (3.2) through the bolt anchor head (6) to complete the steel reinforcement frame of the precast reinforced concrete column. Step 6: Pour concrete into the steel frame to obtain the lower precast reinforced concrete column (2.1), and repeat steps 1 to 5 to obtain the upper precast reinforced concrete column (2.2). Step 7: Weld the vertical H-shaped short steel (8) of the upper precast reinforced concrete column (2.2) to the precast column top plate (15) of the lower precast reinforced concrete column (2.1); Step 8: Pour concrete from the grouting port (9) into the connection area between the lower precast reinforced concrete column (2.1) and the upper precast reinforced concrete column (2.2); Step 9: Weld the steel section (19) to the outer wall of the circumferential clamp steel plate (5). The top horizontal steel plate corresponds to the upper horizontal reinforcing plate (3.2), and the bottom horizontal steel plate corresponds to the lower horizontal reinforcing plate (3.1), thus completing the beam-column connection structure.