A concrete building steel plate reinforcing structure and construction method

Abstract

The application relates to a concrete building steel plate reinforcing structure and a construction method, and belongs to the field of building construction. The concrete building steel plate reinforcing structure comprises a first fastening plate, one side of the first fastening plate is provided with a second fastening plate connected with the first fastening plate, the first fastening plate and the second fastening plate are matched to reinforce a concrete column, one side of the first fastening plate close to the second fastening plate is fixedly connected with a first connecting rod, one end of the first connecting rod away from the first fastening plate is arranged to pass through the second fastening plate, one side of the second fastening plate close to the first fastening plate is fixedly connected with a second connecting rod, and one end of the second connecting rod away from the second fastening plate is arranged to pass through the first fastening plate. The application has the effect that a reinforcing part for reinforcing a concrete column is stably connected with the concrete column.

Description

Technical Field

[0001] This application relates to the field of building construction, and in particular to a steel plate reinforcement structure for concrete buildings and a construction method thereof. Background Technology

[0002] Currently, in actual use, concrete columns may experience decreased durability and insufficient strength due to varying environmental conditions and differences in the actual load they bear. In such cases, reinforcement of the concrete columns is necessary.

[0003] Currently, the general methods for reinforcing concrete columns are as follows:

[0004] 1. The cross-section reinforcement method involves wrapping new concrete around the outside of the concrete column to increase its load-bearing capacity; however, this method requires a lot of space and is not practical.

[0005] 2. Carbon fiber reinforcement method: This method increases the load-bearing capacity of a concrete column by circumferentially wrapping carbon fiber cloth around it. However, the practical applications of carbon fiber cloth are limited by temperature.

[0006] 3. The winding method involves wrapping the reinforcing bars around the outside of the concrete column to increase its load-bearing capacity. However, this method requires a significant amount of time from workers to wrap the reinforcing bars and is not very convenient.

[0007] 4. Steel plate reinforcement method: Steel plates are attached to the concrete column, thereby increasing the cross-section and the lateral restraint on the concrete column, thus increasing the load-bearing capacity of the concrete column. This is a commonly used method at present.

[0008] Regarding the aforementioned technologies, the inventors believe that existing steel plate reinforcement methods generally involve welding steel plates to the outside of concrete columns and then bonding the steel plates to the concrete columns with adhesives, which can easily lead to weak adhesion. Summary of the Invention

[0009] In order to ensure a stable connection between the reinforcement components used to strengthen the concrete column and the concrete column, this application provides a steel plate reinforcement structure for concrete buildings and a construction method thereof.

[0010] Firstly, the concrete building steel plate reinforcement structure provided in this application adopts the following technical solution:

[0011] A steel plate reinforcement structure for concrete buildings includes a first fastening plate and a second fastening plate connected to the first fastening plate on one side. The first fastening plate and the second fastening plate work together to reinforce the concrete column. A first connecting rod is fixedly connected to the side of the first fastening plate near the second fastening plate, and the end of the first connecting rod away from the first fastening plate passes through the second fastening plate. A second connecting rod is fixedly connected to the side of the second fastening plate near the first fastening plate, and the end of the second connecting rod away from the second fastening plate passes through the first fastening plate.

[0012] By adopting the above technical solution, when splicing the first fastening plate and the second fastening plate, the first connecting rod is inserted into the concrete column and passes through the concrete column to connect with the second fastening plate, and the second connecting rod is inserted into the concrete and passes through the concrete column to connect with the first fastening plate. This further fixes the first fastening plate and the second fastening plate, thereby reducing the occurrence of the first fastening plate or the second fastening plate falling off during use due to the first fastening plate and the second fastening plate being only bonded by adhesive.

[0013] Optionally, the first connecting rod is hollow inside and has multiple first grout holes on its sidewalls; the first fastening plate has a first grouting hole communicating with the interior of the first connecting rod; and the second fastening plate has a second connecting hole for the first connecting rod to be inserted into. Alternatively, the second connecting rod is hollow inside and has multiple second grout holes; the second fastening plate has a second grouting hole communicating with the interior of the second connecting rod; and the first fastening plate has a first connecting hole for the second connecting rod to be inserted into.

[0014] By adopting the above technical solution, due to the presence of the first grouting hole and the first injection hole on the first connecting rod, and the second grouting hole and the second injection hole on the second connecting rod, after the first and second connecting rods penetrate the concrete column, concrete can be injected into the first connecting rod through the first injection hole and into the second connecting rod through the second injection hole. This increases the connection between the first connecting rod and the concrete column, and also increases the connection between the second connecting rod and the concrete column. This further reduces the occurrence of poor reinforcement effect on the concrete column due to the first and second fastening plates falling off during use.

[0015] Optionally, a first lifting plate is slidably connected to the side of the first fastening plate away from the concrete column, and a second lifting plate is slidably connected to the side of the second fastening plate away from the side that can abut against the concrete column. The ends of the first lifting plate and the second lifting plate that are close to each other are connected to surround the first fastening plate and the second fastening plate.

[0016] By adopting the above technical solution, due to the presence of the first lifting plate and the second lifting plate, after the first lifting plate and the second lifting plate are connected, the reinforcement range of the first fastening plate and the second fastening plate can be extended by injecting adhesive between the first lifting plate and the second lifting plate and the side wall of the concrete column, thereby further increasing the protection of the concrete column.

[0017] Optionally, a plurality of first main insert rods are installed on one side of the first lifting plate near the first fastening plate. Each first main insert rod is inserted into a groove opened on one side of the first lifting plate and a first main spring is provided between the first lifting plate and the inner wall of the first lifting plate to connect the inner wall of the groove of the first lifting plate and the first main insert rod. The first fastening plate is provided with a plurality of first sliding grooves for the first main insert rod to be inserted on one side near each first main insert rod.

[0018] The second lifting plate has a plurality of second main insert rods installed on one side near the second fastening plate. The second lifting plate has a groove for inserting the second main insert rod on the side near each of the second main insert rods. Each groove has a second main spring for connecting the groove wall and the second main insert rod. The second fastening plate has a second sliding groove for inserting the plurality of second main insert rods on the side near each of the second main insert rods.

[0019] By adopting the above technical solution, the position between the first lifting plate and the first fastening plate can be restricted by the insertion of multiple first main inserts into multiple first sliding grooves on one side of the first fastening plate. Similarly, the position between the second lifting plate and the second fastening plate can be restricted by the insertion of multiple second main inserts into multiple second sliding grooves on one side of the second fastening plate. This reduces the risk of dangerous situations caused by the first and second lifting plates sliding unnecessarily during use or transportation.

[0020] Optionally, a plurality of first main insert rods are arranged in a matrix on one side of the first lifting plate. Each first slide groove has a first upper insertion hole for engaging the first main insert rod. A first lower insertion hole for engaging the first main insert rod is also provided on one side of the first upper insertion hole in the first slide groove. A first transverse groove for connecting the plurality of first upper insertion holes is also provided between the plurality of first upper insertion holes on one side of the first fastening plate.

[0021] Multiple second main insertion rods are arranged in a matrix on one side of the second lifting plate. Each second slide groove has a second upper insertion hole for opening the second main insertion rod. A second lower insertion hole for engaging the second main insertion rod is also provided on one side of the second upper insertion hole inside the second slide groove. A second transverse groove for connecting multiple second upper slots is also provided between the multiple second upper insertion holes on one side of the second fastening plate.

[0022] By adopting the above technical solution, when multiple sets of first fastening plates and second fastening plates need to be installed on a concrete column, the first lifting plate is moved to one side, so that multiple first main inserts on one side of the first fastening plate are inserted from the first upper insert hole to the first lower insert hole. Then, the subsequent first fastening plate is placed on one side of the first lifting plate, so that multiple first main inserts that have moved out from the first lower insert hole on one side of the first lifting plate slide into the first transverse groove of the first fastening plate that has just been placed on one side of the concrete column, and are inserted into the first upper insert hole of the first fastening plate, thereby realizing the connection of multiple first fastening plates.

[0023] The second lifting plate is moved to one side, so that multiple second main inserts on one side of the second fastening plate are inserted from the second upper insert hole to the second lower insert hole. Then, the subsequent second fastening plate is placed on one side of the second lifting plate, so that multiple second main inserts that have moved out from the second lower insert hole on one side of the second lifting plate can slide into the second transverse groove of the second fastening plate that has just been placed on one side of the concrete column, and thus insert into the second upper insert hole of the second fastening plate, thereby connecting multiple second fastening plates and thus achieving sufficient reinforcement of the outside of the concrete column.

[0024] Optionally, the first fastening plate has a first abutment plate on the side near the plurality of first sliding grooves inside, which can abut against the first main insert rod that is snapped into the first upper insertion hole and the first lower insertion hole. A plurality of first abutment springs are fixedly connected between the side of the first abutment plate near the first sliding groove and the inner wall of the first fastening plate. The second fastening plate has a second insertion rod fixedly connected on the side near the first abutment plate for inserting into the interior of the first fastening plate and abutting against the first abutment plate on one side, thereby driving the first abutment plate to move towards the side near the first main insert rod. The end of the second insertion rod that is inserted into the first fastening plate is fixedly connected to a second locking block. The first abutment plate has a first locking hole for the second locking block to be inserted.

[0025] The second fastening plate has a second abutment plate on the side near the plurality of second sliding grooves inside, which can abut against the second main insertion rod that is snapped into the second upper insertion hole and the second lower insertion hole. A plurality of second abutment springs are fixedly connected between the side of the second abutment plate near the second sliding groove and the inner wall of the second fastening plate. The first fastening plate has a first insertion rod fixedly provided on the side near the second abutment plate for inserting into the interior of the second fastening plate and abutting against the second abutment plate on one side, thereby driving the second abutment plate to move towards the side near the second main insertion rod. The end of the first insertion rod that is inserted into the second fastening plate is fixedly connected to a first locking block. The second fastening plate has a second locking hole for the first locking block to be inserted.

[0026] By adopting the above technical solution, due to the presence of the first insertion rod, the first locking block, the first abutting plate, and the multiple first abutting springs connected to the first abutting plate, when the first insertion rod is inserted into the interior of the second fastening plate, the second abutting plate can move the multiple second main insertion rods out of the second upper insertion hole and the second lower insertion hole, thereby reducing the trouble of multiple second main insertion rods being difficult to move out of the second upper insertion hole or the second lower insertion hole when the second lifting plate is moved to the side closer to another second fastening plate;

[0027] Furthermore, due to the presence of the second insertion rod, the second locking block, the second abutting plate, and the multiple second abutting springs connected to the second abutting plate, when the second insertion rod is inserted into the first fastening plate, the first abutting plate can move the multiple first main insertion rods out of the first upper insertion hole and the first lower insertion hole, thereby reducing the trouble of multiple first main insertion rods being difficult to move out of the first upper insertion hole or the first lower insertion hole when the first lifting plate is moved to the side closer to another first fastening plate.

[0028] Optionally, a first fastening block is fixedly connected to one side of the first lifting plate near the second lifting plate, and a second connecting groove for the first fastening block to be inserted is provided on the side of the second lifting plate near the first fastening block. The first fastening block has multiple first fastening grooves, and a first fastening rod is slidably inserted into each first fastening groove. A first fastening spring is fixedly connected between each first fastening rod and the inner wall of the first fastening groove. The second connecting groove has multiple second fastening slots for the first fastening rod to be inserted into.

[0029] The second lifting plate is fixedly connected to the side of the first lifting plate away from the first fastening block. The side of the first lifting plate near the second fastening block is provided with a first connecting groove for the second fastening block to be inserted. The second fastening block is provided with a plurality of second fastening grooves. A second fastening rod is slidably inserted into each second fastening groove. A second fastening spring is fixedly connected between each second fastening rod and the inner wall of the second fastening groove. The first connecting groove is provided with a plurality of first fastening slots for the second fastening rod to be inserted.

[0030] By adopting the above technical solution, when the first fastening plate drives the first lifting plate to abut against the second fastening plate and the second lifting plate, the first fastening block is inserted into the second connecting groove, and multiple first fastening rods on one side of the first fastening block are inserted into the second fastening slot. At the same time, the second fastening block is inserted into the first connecting groove, and multiple second fastening rods on one side of the second fastening block are inserted into the second fastening slot. This further strengthens the connection between the first lifting plate and the second lifting plate, thereby reducing the occurrence of loosening of the connection between the first lifting plate and the second lifting plate after injecting adhesive between them, or of misalignment between the first lifting plate and the second lifting plate during welding, which leads to poor subsequent reinforcement effect.

[0031] Optionally, the first lifting plate has a first slurry inlet hole that penetrates through the first lifting plate, and the second lifting plate has a second slurry inlet hole that penetrates through the second lifting plate.

[0032] By adopting the above technical solution, the presence of the first and second grout inlets reduces the trouble for workers when injecting adhesive on the side of the first lifting plate near the concrete column and the side of the second lifting plate near the concrete column.

[0033] Secondly, this application provides a construction method for reinforcing concrete buildings with steel plates, employing the following technical solution:

[0034] A method for reinforcing concrete structures with steel plates, as described in the first aspect, includes the following steps:

[0035] S1. Accessory installation: Place the first fastening plate and the second fastening plate on the same outer peripheral wall of the concrete column, insert the first connecting rod on one side of the first fastening plate into the concrete column and connect it with the second fastening plate, and insert the second connecting rod on one side of the second fastening plate into the concrete column and connect it with the first fastening plate.

[0036] S2, Accessory Connection: Insert the first insertion rod on one side of the first fastening plate into the interior of the second fastening plate, and move the second abutment plate towards the side closer to the second main insertion rod, so that the second main insertion rod inserted into the second upper insertion hole is inserted into the interior of the second lower insertion hole, and exposes multiple second upper insertion holes and the second transverse groove. At the same time, insert the second insertion rod on one side of the second fastening plate into the interior of the first fastening plate, and move the first abutment plate towards the side closer to the first main insertion rod, so that the first main insertion rod inserted into the first upper insertion hole is inserted into the interior of the first lower insertion hole, and exposes multiple first upper insertion holes and the first transverse groove. Insert the first fastening block into the interior of the second connecting groove, and insert the second fastening block into the interior of the second connecting groove.

[0037] S3. Multi-segment assembly: Place another first fastening plate and second fastening plate below the first fastening plate and the second fastening plate mentioned above. While placing the lower first fastening plate, move multiple first main inserts on one side of the upper first lifting plate along the first transverse groove opened on the side wall of the lower first fastening plate, so that multiple first main inserts on one side of the upper first lifting plate are inserted into the first upper insertion hole of the lower first fastening plate. Similarly, while placing the lower second fastening plate, move multiple second main inserts on one side of the upper second lifting plate along the second transverse groove opened on the side wall of the lower second fastening plate, so that multiple second main inserts on one side of the upper second lifting plate are inserted into the multiple second upper insertion holes of the lower second fastening plate. This process is repeated from top to bottom.

[0038] S4. Grouting Connection: Grout is injected into the first grouting hole of each first fastening plate, so that concrete fills the first connecting rod and flows out from the first grouting hole of the first connecting rod, thereby achieving the connection between the first connecting rod and the inside of the concrete column. Grout is injected into each second grouting hole, so that concrete fills the inside of the second connecting rod and flows out from the second grouting hole of the second connecting rod, thereby achieving the adhesion between the second connecting rod and the concrete column. Adhesive is injected into the first grouting hole on one side of each first lifting plate, thereby achieving stable adhesion between the first lifting plate and the outer wall of the concrete column. Adhesive is injected into each second grouting hole, thereby achieving stable adhesion between the second lifting plate and the outer wall of the concrete column.

[0039] In summary, this application includes at least one of the following beneficial technical effects:

[0040] 1. The presence of the first connecting rod and the second connecting rod makes the connection between the first fastening plate and the second fastening plate and the concrete column more stable, thereby making the reinforcement effect of the first fastening plate and the second fastening plate on the concrete column better;

[0041] 2. The presence of the first and second lifting plates enables the connection of multiple first and second fastening plates, thereby reducing the use of fastening plates and achieving sufficient reinforcement of the outer wall of the concrete column.

[0042] 3. The presence of multiple first main insertion rods, multiple second main insertion rods, multiple first sliding grooves, multiple second sliding grooves, multiple first upper insertion holes, multiple first lower insertion holes, multiple second upper insertion holes, and multiple second lower insertion holes enables the mechanical connection of the first lifting plate to the two first fastening plates and the two second fastening plates. This further facilitates the subsequent process of injecting adhesive between the first and second lifting plates and the concrete column, and reduces the waste of adhesive during subsequent injection. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0044] Figure 2 This is a cross-sectional view showing the first connecting rod according to an embodiment of this application.

[0045] Figure 3 This is a cross-sectional view showing the second connecting rod according to an embodiment of this application.

[0046] Figure 4 This is a schematic diagram showing the structure of the first fixing plate according to an embodiment of this application.

[0047] Figure 5 This is a schematic diagram showing the structure of the second fixing plate according to an embodiment of this application.

[0048] Figure 6 This is a cross-sectional view highlighting the first connector rod in an embodiment of this application.

[0049] Figure 7 This is a cross-sectional view highlighting the second connector rod in an embodiment of this application.

[0050] Figure 8 This is a cross-sectional view highlighting the insertion relationship between the first fastening block and the second connecting groove in an embodiment of this application.

[0051] Figure 9 This is a cross-sectional view highlighting the insertion relationship between the second fastening block and the first connecting groove in an embodiment of this application.

[0052] Explanation of reference numerals in the attached drawings: 1. First fastening plate; 11. First connecting rod; 111. First grout hole; 12. First connecting hole; 13. First grouting hole; 14. First limiting groove; 15. First sliding groove; 151. First upper insertion hole; 152. First lower insertion hole; 16. First transverse groove; 17. First abutment plate; 171. First abutment spring; 172. First locking hole; 18. First insertion rod; 181. First locking block; 2. Second fastening plate; 21. Second connecting rod; 211. Second grout hole; 22. Second connecting hole; 23. Second grouting hole; 24. Second limiting groove; 25. Second sliding groove; 251. Second upper insertion hole; 252. Second lower insertion hole; 26. Second transverse groove; 27. Second abutment plate; 271. Second abutment spring; 272. Second locking hole; 28. Second insertion rod; 281. Second locking block; 3. First lifting plate; 31. First slider; 32. First main insertion rod; 321. First main spring; 33. First fastening block; 331. First fastening groove; 34. First connecting groove; 341. First fastening slot; 35. First fastening insertion rod; 351. First fastening spring; 36. First slurry inlet hole; 4. Second lifting plate; 41. Second slider; 42. Second main insertion rod; 421. Second main spring; 43. Second fastening block; 431. Second fastening groove; 44. Second connecting groove; 441. Second fastening slot; 45. Second fastening insertion rod; 451. Second fastening spring; 46. Second slurry inlet hole. Detailed Implementation

[0053] The following is in conjunction with the appendix Figure 1 - Appendix Figure 9 This application will be described in further detail.

[0054] This application discloses a steel plate reinforcement structure for concrete buildings, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a first fastening plate 1, which is L-shaped. A second fastening plate 2, also L-shaped, is connected to one side of the first fastening plate 1. The first fastening plate 1 and the second fastening plate 2 work together to surround and clamp the concrete column with a rectangular cross-section.

[0055] A first connecting rod 11 is fixedly connected to the side wall of the first fastening plate 1 near the concrete column. The first connecting rod 11 is fixedly connected to the side wall of the first fastening plate 1. A second connecting hole 22 is opened at the corresponding position of the first connecting rod 11 for insertion into the first connecting rod 11. A second connecting rod 21 is fixedly connected to the side of the second fastening plate 2 near the concrete column, below the second connecting hole 22. The second connecting rod 21 is fixedly connected to the side wall of the second fastening plate 2, and a first connecting hole 12 is opened at the corresponding position of the first fastening plate 1 for insertion into the second connecting rod 21. The end side wall of the first fastening plate 1 near the second fastening plate 2 is connected.

[0056] When it is necessary to enclose the outer wall of a concrete column, the first fastening plate 1 and the second fastening plate 2 are placed on the same horizontal plane on the outside of the concrete column. Then, the side of the first fastening plate 1 closest to the concrete column is brought into contact with the concrete column, and the side of the second fastening plate 2 is brought into contact with the concrete column. At the same time, the first connecting rod 11 is inserted into the interior of the concrete column, and one end of the first connecting rod 21 passes through the concrete column and is inserted into the second connecting hole 22 on the second fastening plate 2. The second connecting rod 21 is inserted into the interior of the concrete column, and one end of the second connecting rod 21 passes through the concrete column and is inserted into the first connecting hole 12 on the first fastening plate 1. Then, the side walls of the first fastening plate 1 and the second fastening plate 2 that are in contact are welded together, so that the first fastening plate 1 and the second fastening plate 2 form a rectangular frame that encloses the concrete column, thereby strengthening the concrete column.

[0057] By inserting the first connecting rod 11 and the second connecting rod 21 into the interior of the concrete column, the positions of the first fastening plate 1 and the second fastening plate 2 are fixed, making the first fastening plate 1 and the second fastening plate 2 more stable during use.

[0058] The first connecting rod 11 is hollow inside, and multiple first flow holes 111 penetrating the inner wall of the first connecting rod 11 are formed on its side wall, and the multiple first flow holes 111 are evenly distributed on the first connecting rod 11. The second connecting rod 21 is hollow inside, and multiple second flow holes 211 penetrating the inner wall of the second connecting rod 21 are formed on its side wall, and the multiple second flow holes 211 are evenly distributed on the second connecting rod 21.

[0059] The first fastening plate 1 has a first grouting hole 13 on the side near the first connecting rod 11. The first grouting hole 13 is tapered, with the apex of the tapered shape facing the side near the first connecting rod 11 and communicating with the interior of the first connecting rod 11. The second fastening plate 2 has a second grouting hole 23 on the side near the second connecting rod 21. The second grouting hole 23 is also tapered, with the apex of the tapered shape facing the side near the second connecting rod 21 and communicating with the interior of the second connecting rod 21.

[0060] When the first connecting rod 11 and the second connecting rod 21 are inserted into the concrete column to fix the positions of the first fastening plate 1 and the second fixing plate, concrete is poured into the first grouting hole 13 and the second grouting hole 23. This allows the concrete to flow out from the first grouting hole 111 and the second grouting hole 211, thus achieving a more stable connection between the first connecting rod 11 and the inner wall of the concrete column, and between the second connecting rod 21 and the inner wall of the concrete column.

[0061] Furthermore, the concrete inside the first connecting rod 11 can flow into the second connecting hole 22, thereby sealing the second connecting hole 22 and achieving a more stable connection between the first connecting rod 11 and the second fastening plate 2. The concrete inside the second connecting rod 21 can flow into the first connecting hole 12, achieving a more stable connection between the second connecting rod 21 and the first fastening plate 1.

[0062] A first lifting plate 3, enclosing the sidewall of the first fastening plate 1, is slidably sleeved on the side of the first fastening plate 1 away from its contact with the outer wall of the concrete column; a second lifting plate 4, enclosing the second fastening plate 2, is slidably sleeved on the side of the second fastening plate 2 away from its contact with the outer wall of the concrete column. The sidewalls of the first lifting plate 3 and the second lifting plate 4 are connected by welding.

[0063] Two opposing first sliders 31 are fixedly connected to the side of the first lifting plate 3 near the first fastening plate 1 where the first grouting hole 13 is located. The first fastening plate 1 has a first limiting groove 14 on the side near each first slider 31. The two first limiting grooves 14 are distributed on both sides of the first grouting hole 13, and each first limiting groove 14 is opened in a direction perpendicular to the length direction of the first fastening plate 1. Each first slider 31 is inserted into the first limiting groove 14 and slides against the inner wall of the first limiting groove 14.

[0064] Two second sliders 41 are fixedly connected to the side of the second lifting plate 4 near the second fastening plate 2 where the second grouting hole 23 is located. The second fastening plate 2 has a second limiting groove 24 on the side near each second slider 41. The two limiting grooves 24 are distributed on both sides of the second grouting hole 23, and each limiting groove 24 is perpendicular to the length direction of the second fastening plate 2. Each second slider 41 is inserted into the second limiting groove 24 and slides against the inner wall of the second limiting groove 24.

[0065] The presence of the first lifting plate 3 and the second lifting plate 4 can, on the one hand, further strengthen the connection between the first fastening plate 1 and the second fastening plate 2 and the concrete column; on the other hand, when the first lifting plate 3 and the second lifting plate 4 are pulled, causing the first lifting plate 3 to move relative to the first fastening plate 1 and the second lifting plate 4 to move relative to the second fastening plate 2, and adhesive is injected into the gap between the first lifting plate 3 and the second lifting plate 4 and the side wall of the concrete column to bond the first lifting plate 3 and the second lifting plate 4 to the side wall of the concrete column, the side wall of the concrete column not covered by the first fastening plate 1 and the second fastening plate 2 can be reinforced.

[0066] Reference Figure 3 , Figure 4 and Figure 5 On the longer side wall of the first lifting plate 3, where the first slider 31 is not connected, near the side wall of the first reinforcing plate away from the concrete column, multiple first main insert rods 32 are installed. In this embodiment, four first main insert rods 32 are provided, and the four first main insert rods 32 are arranged in a matrix. A groove is provided on the side of the first lifting plate 3 near each first main insert rod 32. One end of each first main insert rod 32 is inserted into the groove. The end of each first main insert rod 32 located in the groove on one side of the first lifting plate 3 is slidably and fixedly connected to a first main spring 321. The end of each first main spring 321 away from the first main insert rod 32 is fixedly connected to the inner wall of the groove.

[0067] Two first sliding grooves 15 are formed on the side of the first fastening plate 1 near the first main insertion rod 32. The two first sliding grooves 15 are spaced apart by a certain distance, and each first sliding groove 15 is formed in a direction perpendicular to the length direction of the first lifting plate 3. Each first sliding groove 15 corresponds to two first main insertion rods 32 located in a row, and each first main insertion rod 32 is located inside the first sliding groove 15 and inserted into the inner wall of the first sliding groove 15.

[0068] On the longer side wall of the second lifting plate 4, where the second slider 41 is not connected, near the side wall of the second reinforcing plate away from the concrete column, multiple second main insert rods 42 are installed. In this embodiment, four second main insert rods 42 are provided, and the four second main insert rods 42 are arranged in a matrix. A groove is provided on the side of the second lifting plate 4 near each second main insert rod 42. One end of each second main insert rod 42 near the groove on the side of the second lifting plate 4 is inserted into the groove. A second main spring 421 is fixedly connected to one end of each second main insert rod 42 located in the groove on the side of the second lifting plate 4. The end of each second main spring 421 away from the second main insert rod 42 is fixedly connected to the inner wall of the groove.

[0069] The second fastening plate 2 has two second sliding grooves 25 on the side near the second main insertion rod 42. The two second sliding grooves 25 are spaced apart by a certain distance, and each second sliding groove 25 is opened in a direction perpendicular to the length direction of the second lifting plate 4. Each second sliding groove 25 corresponds to two second main insertion rods 42 located in a row, and each second main insertion rod 42 is located inside the second sliding groove 25 and inserted into the inner wall of the second sliding groove 25.

[0070] With the presence of the first main insert rod 32 and the first main spring 321, and their cooperation with the first slide groove 15, when the first lifting plate 3 needs to further reinforce the lower part of the first fastening plate 1, the first lifting plate 3 can slide downwards. The position of the first lifting plate 3 is restricted by the first main insert rod 32, thereby reducing the trouble of the first lifting plate 3 sliding to one side of the first fastening plate 1 and separating from the first fastening plate 1. Furthermore, with the cooperation of the second main insert rod 42 and the second main spring 421 with the second slide groove 25, the second lifting plate 4 and the second fastening plate 2 can achieve the same effect as the first lifting plate 3 and the second fastening plate 2.

[0071] Each first slide groove 15 has a first upper insertion hole 151 on one side near the first fastening plate 1, and each first slide groove 15 has a first lower insertion hole 152 on the other side near the first fastening plate 1. The two first main insertion rods 32 corresponding to the first slide groove 15 can be inserted into the first upper insertion hole 151 and the first lower insertion hole 152 respectively, thereby fixing the position of the first lifting plate 3. A first transverse groove 16 is opened on one side of the first fastening plate 1, which connects the first upper insertion hole 151 inside the two first slide grooves 15 and is perpendicular to the first slide groove 15.

[0072] Each second slide groove 25 has a second upper insertion hole 251 on one side near the second fastening plate 2, and each second slide groove 25 has a second lower insertion hole 252 on the other side near the second fastening plate 2. The two second main insertion rods 42 corresponding to the second slide groove 25 can be inserted into the second upper insertion hole 251 and the second lower insertion hole 252 respectively, thereby fixing the position of the second lifting plate 4. A second transverse groove 26 is provided on one side of the second fastening plate 2, which connects the second upper insertion hole 251 inside the two second slide grooves 25 and is perpendicular to the second slide groove 25.

[0073] When multiple first fastening plates 1 and second fastening plates 2 are required to fully surround the outer wall of a vertically installed concrete column, it is only necessary to move the two first main insert rods 32 of the upper first lifting plate 3, which are inserted into the first upper insertion hole 151, to the first lower insertion hole 152. The two first main insert rods 32, which are moved out from the first lower insertion hole 152, slide from the first transverse groove 16 on the side of the lower first fastening plate 1 to the two first sliding grooves 15, and thus connect with the two first upper insertion holes 151 opened on the side of the lower first fastening plate 1, thereby realizing the connection between the upper first lifting plate 3 and the lower first fastening plate 1.

[0074] Simultaneously, the two second main insert rods 42 of the upper second lifting plate 4, which are inserted into the second upper insert hole 251, are moved and inserted into the second lower insert hole 252. The two second main insert rods 42, which are moved out from the second lower insert hole 252, slide from the second transverse groove 26 on the side of the lower second fastening plate 2 to the two second sliding grooves 25, thereby connecting with the two second upper insert holes 251 opened on the side of the lower second fastening plate 2, thus realizing the connection between the upper second lifting plate 4 and the lower second fastening plate 2.

[0075] Reference Figure 6 and Figure 7 A first abutment plate 17 is provided inside the first fastening plate 1 on the side near the first sliding groove 15. The first abutment plate 17 can move towards the side of the first fastening plate 1 away from the concrete column, thereby removing the first main insertion rod 32, which is inserted into the multiple first upper insertion holes 151 and multiple second lower insertion holes 252, from inside the first upper insertion holes 151 and multiple lower insertion holes 252. Multiple first abutment springs 171 are fixedly connected to the side of the first fastening plate 1 near the first sliding groove 15. The ends of the multiple first abutment springs 171 away from the first abutment plate 17 are all fixedly connected to the inner wall of the first fastening plate 1.

[0076] A second insertion rod 28 is fixedly connected to the side wall of the second fastening plate 2 near the side where the first abutment plate 17 is installed. The second insertion rod 28 can be inserted into the interior of the first fastening plate 1, and the end of the second insertion rod 28 away from the second fastening plate 2 is set as an inclined surface. The inclined surface gradually slopes from the side near the first abutment plate 17 to the side away from the first abutment plate 17. A second locking block 281 is fixedly connected to the end of the second insertion rod 28 near the first abutment plate 17. The second locking block 281 is set as a pyramid shape, and the apex of the prism is set towards the side away from the second insertion rod 28. The first abutment plate 17 has a first locking hole 172 for the first locking block 181 to be inserted.

[0077] A second abutment plate 27 is provided inside the second fastening plate 2 on the side near the second slide groove 25. The second abutment plate 27 can move towards the side of the second fastening plate 2 away from the concrete column, thereby removing the second main insertion rod 42, which is inserted into the multiple second upper insertion holes 251 and multiple second lower insertion holes 252, from inside the second upper insertion holes 251 and multiple lower insertion holes 252. Multiple second abutment springs 271 are fixedly connected to the side of the second fastening plate 2 near the side where the second slide groove 25 is provided. The ends of the multiple second abutment springs 271 away from the second abutment plate 27 are all fixedly connected to the inner wall of the second fastening plate 2.

[0078] A first insertion rod 18 is fixedly connected to the side wall of the first fastening plate 1 near the side where the second abutment plate 27 is installed. The first insertion rod 18 can be inserted into the interior of the second fastening plate 2, and the end of the first insertion rod 18 away from the first fastening plate 1 is set as an inclined surface. The inclined surface gradually slopes from the side near the second abutment plate 27 to the side away from the second abutment plate 27. A first locking block 181 is fixedly connected to the end of the first insertion rod 18 near the second abutment plate 27. The first locking block 181 is set as a pyramid shape, and the apex of the pyramid is set towards the side away from the first insertion rod 18. The second abutment plate 27 has a second locking hole 272 for the second locking block 281 to be inserted.

[0079] When assembling the first fastening plate 1 and the second fastening plate 2 on the vertically set concrete column, the first insertion rod 18 is inserted into the interior of the second fastening plate 2, thereby driving the second abutment plate 27 to move closer to the second main insertion rod 42, thereby moving the four second main insertion rods 42 out of the two second upper insertion holes 251 and the two second lower insertion holes 252, so that the first lifting plate 3 can slide downward. As the first insertion rod 18 continues to move, the first locking block 181 is inserted into the second locking hole 272 on the second abutment plate 27, so that during the descent of the second lifting plate 4, the two second main insertion rods 42 that were originally inserted into the two second upper insertion holes 251 can be inserted into the two second lower insertion holes 252, thereby realizing the convenient connection between the second lifting plate 4 and the second fastening plate 2 below.

[0080] Simultaneously, the second insertion rod 28 is inserted into the first fastening plate 1, thereby driving the first abutment plate 17 to move closer to the first main insertion rod 32, thus moving the four first main insertion rods 32 out of the two first upper insertion holes 151 and the two first lower insertion holes 152, allowing the first lifting plate 3 to slide downwards. As the second insertion rod 28 continues to move, the second locking block 281 is inserted into the first locking hole 172 on the first abutment plate 17, so that during the descent of the first lifting plate 3, the two first main insertion rods 32 that were originally inserted into the two first upper insertion holes 151 can be inserted into the two first lower insertion holes 152, thereby facilitating the subsequent connection between the first lifting plate 3 and the first fastening plate 1 below.

[0081] Reference Figure 8 and Figure 9 A first fastening block 33 is fixedly connected to the middle position of one side of the first lifting plate 3 near the second lifting plate 4. The side of the first fastening block 3 away from the first lifting plate 3 gradually tilts from the middle to both sides towards the side closer to the first lifting plate 3. A second connecting groove 44 is provided on the side of the second lifting plate 4 near the first fastening block 33. The first fastening block 33 can be inserted into the second connecting groove 44 and abut against the inner wall of the second connecting groove 44.

[0082] The second lifting plate 4 is fixedly connected to the side of the first lifting plate 3 that is not connected to the first fastening block 33. The side of the second fastening block 43 away from the second lifting plate 4 gradually tilts from the middle to the side closer to the second lifting plate 4. The side of the first lifting plate 3 that is close to the second fastening block 43 has a first connecting groove 34, and the second fastening block 43 can be inserted into the first connecting groove 34 and abut against the inner wall of the first connecting groove 34.

[0083] On the two inclined surfaces of the first fastening block 33 away from the first lifting plate 3, there are inwardly formed first fastening grooves 331. A first fastening rod 35 is slidably inserted into each first fastening groove 331. A first fastening spring 351 is fixedly connected between the end of the first fastening rod 35 inside the first fastening groove 331 and the inner wall of the first fastening groove 331. Two second fastening slots 441 are formed on the inner wall of the second connecting groove 44 for the two first fastening rods 35 to be inserted.

[0084] On both sides of the second fastening block 43 away from the second lifting plate 4, there are inwardly formed second fastening grooves 431. A second fastening slide rod is slidably inserted into each second fastening groove 431. A second fastening spring 451 is fixedly connected between the end of the second fastening slide rod located inside the second fastening groove 431 and the inner wall of the second fastening groove 431. Two first fastening slots 341 are formed on the inner wall of the first connecting groove 34 for the two second fastening rods 45 to be inserted.

[0085] When the first fastening plate 1 drives the first lifting plate 3 to be spliced ​​with the second fastening plate 2 and the second lifting plate 4, the first fastening block 33 on one side of the first lifting plate 3 is inserted into the second connecting groove 44 on one side of the second lifting plate 4, and the two first fastening rods 35 on one side of the first fastening block 33 are inserted into the two second fastening slots 441 inside the second connecting groove 44; at the same time, the second fastening block 43 on one side of the second lifting plate 4 is inserted into the first connecting groove 34 on one side of the first lifting plate 3, and the two second fastening rods 45 on one side of the second fastening block 43 are inserted into the two first fastening slots 341 inside the first connecting groove 34, thereby realizing the further connection of the first lifting plate 3 and the second lifting plate 4.

[0086] Reference Figure 2 The first lifting plate 3 has a first grout inlet 36 at the middle position on the side near the first grouting hole 13, and the second lifting plate 4 has a second grout inlet 46 at the middle position on the side near the second grouting hole 23.

[0087] The presence of the first grout inlet 36 and the second grout inlet 46 makes it easier for workers to inject adhesive into the gap between the first lifting plate 3 and the second lifting plate 4 and the concrete column when the first lifting plate 3 located above and the first fastening plate 1 located below are connected.

[0088] This application also discloses a construction method for reinforcing concrete buildings with steel plates, as detailed below:

[0089] S1. Accessory Installation: Place the first fastening plate 1 and the second fastening plate 2 on the same horizontal plane of the outer wall of the vertically set concrete column. Then, splice the first fastening plate 1 and the second fastening plate 2 together. At the same time, insert the first connecting rod 11 on one side of the first fastening plate 1 into the interior of the concrete column, so that one end of the first connecting rod 11 passes through the concrete column and is inserted into the second connecting hole 22 of the second fastening plate 2. Insert the second connecting rod 21 on one side of the second fastening plate 2 into the interior of the concrete column, and one end of the second connecting rod 21 passes through the concrete column and is inserted into the first connecting hole 12 of the first fastening plate 1.

[0090] S2. Accessory Connection: Insert the first insertion rod 18 and the first locking block 181 on one side of the first fastening plate 1 into the interior of the second fastening plate 2, and insert the second insertion rod 28 and the second locking block 281 on one side of the second fastening plate 2 into the interior of the first fastening plate 1. The first insertion rod 18 and the first locking block 181 drive the second abutment plate 27 to move closer to the second main insertion rod 42, thereby allowing the second main insertion rod 42 to move inside the second slide groove 25; the second insertion rod 28 and the second locking block 281 drive the first abutment plate 17 to move closer to the first main insertion rod 32, thereby allowing the first main insertion rod 32 to move inside the first slide groove 15.

[0091] The first fastening block 33 is inserted into the second connecting groove 44, so that the two first fastening rods 35 on one side of the first fastening block 33 can be inserted into the second fastening slot 441 opened inside the second connecting groove 44; and the second fastening block 43 is inserted into the first connecting groove 34, so that the two second fastening rods 45 on one side of the second fastening block 43 can be inserted into the first fastening slot 341 opened inside the first connecting groove 34.

[0092] Then, the joint between the first fastening plate 1 and the second fastening plate 2 is welded together, and the joint between the first lifting plate 3 and the second lifting plate 4 is welded together.

[0093] S3. Multi-segment assembly: Multiple sets of first fastening plates 1 and second fastening plates 2 are arranged sequentially along the outer side wall of the vertically set concrete column. The two lower first main insertion rods 32 of the upper first lifting plate 3 are inserted into the two upper insertion holes 151 of the lower first fastening plate 1. The two lower second main insertion rods 42 of the upper second lifting plate 4 are inserted into the two upper insertion holes 251 of the lower second fastening plate 2, thereby realizing the assembly of multiple sets of first fastening plates 1 and second fastening plates 2.

[0094] S4. Grouting Connection: Concrete is injected into the first grouting hole 13 on one side of each first fastening plate 1, allowing the concrete to enter the first connecting rod 11 and flow out from the first grouting hole 111, thus connecting the inner wall of the concrete column to the first connecting rod 11. Concrete is injected into the second grouting hole 23 on one side of each second fastening plate 2, allowing the concrete to enter the second connecting rod 21 and flow out from the second grouting hole 211, thus connecting the inner wall of the concrete column to the second connecting rod 21.

[0095] Furthermore, adhesive is injected into the first grout inlet 36 on one side of each first lifting plate 3, and simultaneously into the second grout inlet 46 on one side of each second lifting plate 4, thereby achieving the connection between the first lifting plate 3 and the second lifting plate 4 and the concrete column, and further connecting the multiple first fastening plates 1 and the multiple second fastening plates 2.

[0096] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A concrete building steel sheet reinforcing structure, characterized by: The system includes a first fastening plate (1), and a second fastening plate (2) connected to the first fastening plate (1) is provided on one side of the first fastening plate (1). The first fastening plate (1) and the second fastening plate (2) work together to reinforce the concrete column. A first connecting rod (11) is fixedly connected to the side of the first fastening plate (1) near the second fastening plate (2). The end of the first connecting rod (11) away from the first fastening plate (1) passes through the second fastening plate (2). A second connecting rod (21) is fixedly connected to the side of the second fastening plate (2) near the first fastening plate (1). The end of the second connecting rod (21) away from the second fastening plate (2) passes through the first fastening plate (1). The first fastening plate (1) is slidably connected to the first lifting plate (3) on the side away from the concrete column, and the second fastening plate (2) is slidably connected to the second lifting plate (4) on the side away from the concrete column. The ends of the first lifting plate (3) and the second lifting plate (4) that are close to each other are connected to surround the first fastening plate (1) and the second fastening plate (2). The first lifting plate (3) is equipped with a plurality of first main insertion rods (32) on one side near the first fastening plate (1). Each first main insertion rod (32) is inserted into a groove opened on one side of the first lifting plate (3) on the side near the first lifting plate (3), and a first main spring (321) for connecting the inner wall of the groove of the first lifting plate (3) and the first main insertion rod (32) is provided between the first main insertion rod (3) and the inner wall of the first lifting plate (3). The first fastening plate (1) is provided with a plurality of first sliding grooves (15) for the first main insertion rod (32) to be inserted on the side near each first main insertion rod (32). The second lifting plate (4) is equipped with a plurality of second main insert rods (42) on one side near the second fastening plate (2). The second lifting plate (4) is provided with a groove for the second main insert rod (42) to be inserted on the side near each second main insert rod (42). Each groove is provided with a second main spring (421) for connecting the groove wall and the second main insert rod (42). The second fastening plate (2) is provided with a second sliding groove (25) for the plurality of second main insert rods (42) to be inserted on the side near each second main insert rod (42). Multiple first main insertion rods (32) are arranged in a matrix on one side of the first lifting plate (3). Each first slide groove (15) has a first upper insertion hole (151) for engaging the first main insertion rod (32). The first slide groove (15) also has a first lower insertion hole (152) for engaging the first main insertion rod (32) on one side of the first upper insertion hole (151). A first transverse groove (16) for connecting multiple first upper insertion holes (151) is also provided between the multiple first upper insertion holes (151) on one side of the first fastening plate (1). Multiple second main insertion rods (42) are arranged in a matrix on one side of the second lifting plate (4). Each second slide groove (25) has a second upper insertion hole (251) for engaging the second main insertion rod (42). The second slide groove (25) also has a second lower insertion hole (252) for engaging the second main insertion rod (42) on one side of the second upper insertion hole (251). A second transverse groove (26) for connecting multiple second slide grooves (25) is also provided between the multiple second upper insertion holes (251) on one side of the second fastening plate (2).

2. A reinforced concrete building panel structure according to claim 1, characterised in that: The first connecting rod (11) is hollow inside and has multiple first grout holes (111) on its side wall. The first fastening plate (1) has a first grouting hole (13) that connects to the inside of the first connecting rod (11). The second fastening plate (2) has a second connecting hole (22) for the first connecting rod (11) to be inserted into. The second connecting rod (21) is hollow inside and has multiple second grout holes (211) on its side. The second fastening plate (2) has a second grouting hole (23) that connects to the inside of the second connecting rod (21). The first fastening plate (1) has a first connecting hole (12) for the second connecting rod (21) to be inserted into.

3. The reinforced concrete building panel structure according to claim 1, wherein: The first fastening plate (1) has a first abutting plate (17) on the side near the plurality of first sliding grooves (15) inside, which can abut against the first main insert rod (32) that is snapped into the first upper insertion hole (151) and the first lower insertion hole (152). A plurality of first abutting springs (171) are fixedly connected between the side of the first abutting plate (17) near the first sliding groove (15) and the inner wall of the first fastening plate (1). The second fastening plate (2) is located near the first abutting plate (15). 7) is fixedly provided with a second insertion rod (28) for inserting into the interior of the first fastening plate (1) and abutting against the first abutting plate (17) on one side and driving the first abutting plate (17) to move closer to the first main insertion rod (32). The end of the second insertion rod (28) inserted into the first fastening plate (1) is fixedly connected with a second locking block (281). The first abutting plate (17) is provided with a first locking hole (172) for the second locking block (281) to be inserted. The interior of the second fastening plate (2) near the side of the plurality of second slide grooves (25) is provided with a second abutment plate (27) that can abut against the second main insertion rod (42) that is snapped into the second upper insertion hole (251) and the second lower insertion hole (252). A plurality of second abutment springs (271) are fixedly connected between the side of the second abutment plate (27) near the second slide groove (25) and the inner wall of the second fastening plate (2). The first fastening plate (1) is near the second abutment plate (252). A first insertion rod (18) is fixed on one side of the second fastening plate (2) for insertion into the interior of the second fastening plate (2) and abuts against the second abutting plate (27) on one side, thereby driving the second abutting plate (27) to move closer to the second main insertion rod (42). The end of the first insertion rod (18) inserted into the second fastening plate (2) is fixedly connected to a first locking block (181). A second locking hole (272) is provided on the second fastening plate (2) for the first locking block (181) to be inserted.

4. The reinforced concrete building panel structure according to claim 1, wherein: The first lifting plate (3) is fixedly connected to a first fastening block (33) on one side near the second lifting plate (4). The second lifting plate (4) is provided with a second connecting groove (44) for the first fastening block (33) to be inserted on one side near the first fastening block (33). The first fastening block (33) is provided with a plurality of first fastening grooves (331). Each first fastening groove (331) is slidably inserted with a first fastening rod (35). Each first fastening rod (35) is fixedly connected to the inner wall of the first fastening groove (331) with a first fastening spring (351). The second connecting groove (44) is provided with a plurality of second fastening slots (441) for the first fastening rod (35) to be inserted. The second lifting plate (4) is fixedly connected to the side of the first lifting plate (3) away from the first fastening block (33). The first lifting plate (3) is provided with a first connecting groove (34) for the second fastening block (43) to be inserted into. The second fastening block (43) is provided with a plurality of second fastening grooves (431). Each second fastening groove (431) is slidably inserted with a second fastening rod (45). Each second fastening rod (45) is fixedly connected to the inner wall of the second fastening groove (431). The first connecting groove (34) is provided with a plurality of first fastening slots (341) for the second fastening rod (45) to be inserted into.

5. A reinforced concrete building panel structure according to claim 3, wherein: The first lifting plate (3) has a first slurry inlet hole (36) that penetrates the first lifting plate (3), and the second lifting plate (4) has a second slurry inlet hole (46) that penetrates the second lifting plate (4).

6. A method of reinforcing construction with a concrete building steel sheet, comprising a concrete building steel sheet reinforcing structure according to any one of claims 1 to 5, characterized by: Includes the following steps S1. Accessory installation: Place the first fastening plate (1) and the second fastening plate (2) on the same outer peripheral wall of the concrete column, insert the first connecting rod (11) on one side of the first fastening plate (1) into the concrete column and connect it with the second fastening plate (2), and insert the second connecting rod (21) on one side of the second fastening plate (2) into the concrete column and connect it with the first fastening plate (1). S2, Accessory Connection: Insert the first insertion rod (18) on one side of the first fastening plate (1) into the interior of the second fastening plate (2), and move the second abutment plate (27) towards the side closer to the second main insertion rod (42), so that the second main insertion rod (42) inserted into the second upper insertion hole (251) is inserted into the second lower insertion hole (252), and multiple second upper insertion holes (251) and second transverse grooves (26) are exposed. At the same time, the second insertion rod (28) on one side of the second fastening plate (2) is... Insert it into the inside of the first fastening plate (1) and drive the first abutment plate (17) to move closer to the first main insertion rod (32) so that the first main insertion rod (32) inserted into the first upper insertion hole (151) is inserted into the first lower insertion hole (152), and multiple first upper insertion holes (151) and first transverse grooves (16) are exposed. Insert the first fastening block (33) into the inside of the second connecting groove (44) and insert the second fastening block (43) into the inside of the second connecting groove (44). S3, Multi-segment assembly: Place another first fastening plate (1) and second fastening plate (2) below the first fastening plate (1) and second fastening plate (2) mentioned above. While placing the lower first fastening plate (1), move multiple first main insertion rods (32) on one side of the upper first lifting plate (3) along the first transverse groove (16) opened on the side wall of the lower first fastening plate (1) so that multiple first main insertion rods (32) on one side of the upper first lifting plate (3) are inserted into the first upper insertion hole (151) of the lower first fastening plate (1). Similarly, while placing the lower second fastening plate (2), move multiple second main insertion rods (42) on one side of the upper second lifting plate (4) along the second transverse groove (26) opened on the side wall of the lower second fastening plate (2) so that multiple second main insertion rods (42) on one side of the upper second lifting plate (4) are inserted into the multiple second upper insertion holes (251) of the lower second fastening plate (2). This process is repeated from top to bottom. S4. Grouting connection: Grout is injected into the first grouting hole (13) of each first fastening plate (1) so that concrete fills the first connecting rod (11) and flows out from the first grouting hole (111) of the first connecting rod (11) to achieve the connection between the first connecting rod (11) and the inside of the concrete column. Grout is injected into each second grouting hole (23) so that concrete fills the inside of the second connecting rod (21) and flows out from the second grouting hole (211) of the second connecting rod (21) to achieve the adhesion between the second connecting rod (21) and the concrete column. Adhesive is injected into the first grouting hole (36) on one side of each first lifting plate (3) to achieve the stable adhesion between the first lifting plate (3) and the outer wall of the concrete column. Adhesive is injected from each second grouting hole (46) to achieve the stable adhesion between the second lifting plate (4) and the outer wall of the concrete column.

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