Method for supporting and reinforcing old wall of screen wall

Abstract

The application provides a method for righting and reinforcing an old wall of a screen wall, comprising the following steps: S1, measuring data of a current position of the old wall of the screen wall and an in-situ ground; S2, installing a fixing frame outside the current position of the old wall of the screen wall, and then using the fixing frame and a pressing plate to correct the front and back of the current position of the old wall of the screen wall in the length direction; S3, setting a construction column on one side of the current position of the old wall of the screen wall, the construction column extending into the in-situ ground, and a tie steel bar being penetrated into the current position of the old wall of the screen wall, one side of the tie steel bar being anchored in the construction column; S4, setting a first grouting pipe and a second grouting pipe on the in-situ ground and pouring, one side of the second grouting pipe being provided in the construction column; S5, fixing a reinforcing steel plate and the other side of the construction column on the other side of the current position of the old wall of the screen wall; and S6, removing the fixing frame after the overall structure is stable. The application is designed ingeniously, greatly improves the safety and efficiency of construction, and ensures that the effect of repairing the old wall of the screen wall is good and the quality is high.

Description

Technical Field

[0001] This invention relates to the field of ancient building restoration technology, and in particular to a method for straightening and reinforcing an old screen wall. Background Technology

[0002] Currently, most ancient buildings have earthen brick walls, and screen walls are a common form of ancient architecture. The foundation of these walls is relatively shallow, and due to long-term erosion by the climate, the foundation has settled, causing the walls to tilt. The current methods for repairing tilted ancient building walls are generally as follows: 1) Remove the roof tiles, dismantle the roof rafters, purlins, and other structures that use the walls as load-bearing supports, then dismantle the tilted wall, rebuild the wall foundation and the wall itself, and restore the exterior wall finish and roof structure according to ancient methods; 2) Erect a simple support frame and use jacks or crowbars to adjust the tilt of the wall.

[0003] Demolition and reconstruction can damage historical buildings, reduce their cultural value, and are costly, time-consuming, and inefficient. If simple tools such as crowbars are used to adjust the tilt of the wall, uneven force can easily lead to wall breakage and collapse, causing secondary damage to the wall. Furthermore, it is impossible to achieve controllable and gradual straightening for the repair of complex twisted and deformed walls.

[0004] Chinese patent document CN 107893546 A describes a method and system for straightening the walls of ancient buildings. However, this method can only straighten the walls in one direction, and during the straightening process, there are problems such as uneven and insufficient force distribution, which may damage the structure. Therefore, it has defects and needs improvement. Chinese patent document CN 217710904 U describes a device for correcting and reinforcing the walls of ancient buildings, but it still has the above-mentioned problems. Summary of the Invention

[0005] This invention provides a method for straightening and reinforcing old screen walls, which solves the problems of unsafety in the process of correcting ancient walls, the fact that correction can only be carried out in one direction, the difficulty in restoring the original shape, the risk of secondary damage, the relatively complex construction, and the low efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for straightening and reinforcing an old screen wall, comprising the following steps:

[0007] S1. Measure the current location of the old screen wall and the original ground surface on site;

[0008] S2. Install a fixing frame on the outside of the existing position of the old screen wall, and then use the fixing frame and pressure plate to complete the front and back correction of the existing position of the old screen wall in the length direction.

[0009] S3. A structural column is set on one side of the existing location of the old screen wall. The structural column extends into the original ground and the tie steel bars are passed through the existing location of the old screen wall. One side of the tie steel bars is anchored in the structural column.

[0010] S4. Install the first grouting pipe and the second grouting pipe on the original ground and pour the concrete. One side of the second grouting pipe passes through the structural column.

[0011] S5. Fix the reinforcing steel plate and the other side of the structural column on the other side of the existing location of the old screen wall;

[0012] S6. After the overall structure is stable, remove the fixing frame.

[0013] In the preferred scheme, before S1, the existing location of the old screen wall and the surrounding ground are cleared to ensure the convenience of construction, and all construction materials are placed in the planned area.

[0014] In the preferred embodiment, the original ground around the existing location of the old wall is reinforced to ensure stable compacted soil, and then a concrete cushion layer is poured on the compacted soil.

[0015] In the preferred embodiment, during the installation of the fixing frame in S2, ground anchors are inserted into the original ground to fix the outriggers. A lifting unit is installed on the lower side of the outriggers. A waterproof cover plate is installed on the top of the existing position of the old screen wall. The waterproof cover plate is fixed on the fixing frame. At the same time, a waterproof cloth is installed on the lower side of the waterproof cover plate. The waterproof cloth is placed around the outside of the existing position of the old screen wall. The bottom of the fixing frame is supported by wooden blocks, and multiple wooden blocks are connected by synchronous plates.

[0016] In the preferred embodiment, in S2, multiple air cushions are installed along the length direction on both sides of the existing location of the old screen wall. One side of each air cushion is pressed against the side wall of the existing location of the old screen wall by a pressure plate. The structure of the air cushion is as follows: multiple mounting holes are provided through the air cushion, a contact platform is provided on one side of the mounting hole, the air cushion is connected to the pressure plate by a locking nail, the air cushion is inserted into the mounting hole, and a pressure plate is provided at the end of the crossbar, the pressure plate is pressed against the other side of the air cushion.

[0017] In the preferred scheme, after the existing position of the old screen wall in front of S3 is corrected along the length direction, the air cushion is removed at intervals, and then a structural column is poured at the removal position. Multiple openings are made at the existing position of the old screen wall, and the tie bars are inserted into the openings, ensuring that the tie bars do not protrude from the other side of the openings.

[0018] In the preferred embodiment, in S5, one air cushion is removed in sequence, and then the opening at the position covered by the air cushion is fixed with the tie bar through the reinforcing steel plate. According to this principle, the reinforcing steel plates are installed respectively. A threaded sleeve is fixed on one side of the reinforcing steel plate, and the threaded sleeve is threadedly connected to the structural column.

[0019] In the preferred embodiment, before S6, the current position of the old screen wall is measured again. Then, based on the initial measurement data, the current position of the old screen wall is compared with the ideal position of the old screen wall. If the current position of the old screen wall is still tilted to the left or right in the length direction, the left and right corrections need to be completed.

[0020] In the preferred embodiment, when the left and right tilt angle of the existing position of the old screen wall is relatively small, on the tilted side of the existing position of the old screen wall, the first foundation pit is excavated for the wall foundation located below the existing position of the old screen wall. Then, multiple anchor rods are inserted into the first foundation pit, and a support seat is installed at the bottom of the first foundation pit. The anchor rods are lifted by a buffer pad on the upper part of the support seat, and the gaps on the lower side of the anchor rods are filled with concrete.

[0021] In the preferred embodiment, when the existing position of the old screen wall has a relatively large left-right tilt angle, the first foundation pit and the second foundation pit are excavated on both sides of the wall foundation located below the existing position of the old screen wall. Then, multiple anchor rods are driven into the first foundation pit and driven through to the second foundation pit. Support seats are installed at the bottom of the first foundation pit and the second foundation pit respectively. The anchor rods are lifted by a buffer pad on the upper part of the support seats, and the gaps on the lower side of the anchor rods are filled with concrete.

[0022] The beneficial effects of this invention are as follows: First, the stability of the supporting structure is ensured on the original ground. Then, a fixing frame is installed, which serves as the main force application mechanism. An air cushion is used to safely correct the old screen wall. The force is evenly distributed throughout the process, avoiding the structural damage to unrestricted parts of the ancient wall that may occur with ordinary dispersed force application. When the old screen wall is tilted to the left or right, it can be corrected by fine-tuning the lifting, anchoring the anchor rods, and stabilizing the main body. This invention is highly efficient, low-cost, and provides good wall stability, reducing damage to the wall, improving the overall stability of the old wall after correction, extending the wall's service life, and achieving a high success rate in correction. This method allows historically valuable old buildings to recreate their historical texture and has promotional value. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a construction schematic diagram of step one of the present invention;

[0025] Figure 2 This is the second step in the construction schematic diagram of the present invention;

[0026] Figure 3 This is the third step in the construction schematic diagram of the present invention;

[0027] Figure 4 This is the fourth step in the construction schematic diagram of the present invention;

[0028] Figure 5 This is the fifth step in the construction schematic diagram of the present invention;

[0029] Figure 6 This is the construction schematic diagram of the present invention, which is state one of six steps.

[0030] Figure 7 This is the construction schematic diagram of the present invention, specifically state one of the seven steps.

[0031] Figure 8 This is the eighth step in the construction schematic diagram of the present invention;

[0032] Figure 9 This is the construction schematic diagram of the present invention, specifically process six, state two;

[0033] Figure 10 This is the construction schematic diagram of the present invention, specifically step seven, state two.

[0034] Figure 11 This is the construction schematic diagram of step nine of the present invention;

[0035] Figure 12 This is the construction schematic diagram of step ten of the present invention;

[0036] Figure 13 This is a schematic diagram of the overall structure of the air cushion mounting plate of the present invention;

[0037] Figure 14 yes Figure 13 A schematic diagram of the exploded structure;

[0038] Figure 15 This is an exploded structural diagram of the structural column of the present invention fixing the old screen wall with a reinforcing steel plate.

[0039] In the diagram: 1. Current location of the old screen wall; 2. In-situ ground; 201. Compacted soil; 202. Concrete cushion; 3. Air cushion; 301. Mounting hole; 302. Contact platform; 4. Fixing frame; 401. Crossbar; 402. Outrigger; 403. Ground anchor; 404. Timber pad; 405. Synchronous plate; 5. Waterproof cover; 6. Opening; 7. Lifting unit; 8. First grouting pipe; 9. Structural column; 10. Reinforcing steel plate; 11. Wall foundation; 1101. First foundation pit; 1102. Second foundation pit; 12. Ideal location of the old screen wall; 13. Support seat; 14. Anchor rod; 15. Buffer pad; 16. Filling concrete; 17. Pressure plate; 18. Second grouting pipe; 19. Tie bar; 20. Waterproof cloth; 21. Threaded sleeve; 22. Locking nail. Detailed Implementation

[0040] like Figure 1-12 A method for straightening and reinforcing an old screen wall includes the following steps:

[0041] S1. Measure the current location 1 of the old screen wall and the original ground 2 on site. Through this step, the tilt angle and trend of the old screen wall can be obtained. In order to obtain accurate data, 3D scanning modeling can be used to reverse engineer the scanned point cloud, and then use the point cloud to obtain the overall model, so that the state of the old screen wall can be obtained from multiple angles.

[0042] S2. Install a fixing frame 4 on the outside of the existing position 1 of the old screen wall, and then use the fixing frame 4 and the pressure plate 17 to complete the front and back correction of the existing position 1 of the old screen wall in the length direction. The fixing frame 4 surrounds the old screen wall to ensure the stability of the construction. The pressure plate 17, as the force conversion point, can better distribute the force on the old screen wall.

[0043] S3. A structural column 9 is installed on one side of the existing position 1 of the old screen wall. The structural column 9 extends into the original ground 2, and the tie steel bar 19 is inserted through the existing position 1 of the old screen wall. One side of the tie steel bar 19 is anchored in the structural column 9. With this structure, it can be fixed immediately after the correction is completed. The structural column structure is stable, has strong load-bearing capacity, and the overall construction period is short, which can better complete the repair of the old screen wall.

[0044] S4. A first grouting pipe 8 and a second grouting pipe 18 are installed and poured on the original ground surface 2. One side of the second grouting pipe 18 is inserted into the structural column 9. This structure ensures that the structure below the original ground surface plays a stable supporting role against the old wall.

[0045] S5. Fix the reinforcing steel plate 10 and the structural column 9 on the other side of the existing position 1 of the old screen wall. The size of the reinforcing steel plate 10 can be adjusted as needed. The overall construction is convenient and the connection is stable.

[0046] S6. After the overall structure is stable, remove the fixing frame 4.

[0047] In the preferred embodiment, before S1, the area around the existing location 1 of the old screen wall and the original ground 2 is cleared to ensure convenient construction, and all construction materials are placed in the planned area. This structure provides good protection for the area around the old screen wall, preventing ground vibration changes near the old screen wall from being transmitted to the underside of the old screen wall and causing further tilting or collapse risks.

[0048] In the preferred embodiment, the existing ground 2 around the current location 1 of the old wall is reinforced to ensure stable compacted soil 201. Then, a concrete cushion layer 202 is poured on the compacted soil 201. The compacted soil 201 and the concrete cushion layer 202 can stably bear the weight of the upper construction components, while also restraining the settlement of the soil at the construction site, thus avoiding secondary damage during the construction process.

[0049] In the preferred embodiment, during the installation of the fixing frame 4 in S2, ground anchors 403 are inserted into the original ground 2 to fix the outrigger 402. A lifting unit 7 is installed on the lower side of the outrigger 402. A waterproof cover plate 5 is installed on the top of the existing position 1 of the old screen wall. The waterproof cover plate 5 is fixed on the fixing frame 4. At the same time, a waterproof cloth 20 is installed on the lower side of the waterproof cover plate 5. The waterproof cloth 20 surrounds the outside of the existing position 1 of the old screen wall. The bottom of the fixing frame 4 is supported by wooden blocks 404. Multiple wooden blocks 404 are connected by a synchronous plate 405. Ground anchor 403 can be constructed well. By limiting the support 402, it can ensure that the fixed frame 4 has strong anti-overturning ability. In this way, it can withstand the swaying stability caused by the lateral force change during the correction of the old wall of the screen wall, and avoid instability. There are many uncertain factors in the construction weather and environment. During the correction process, the structure and force of the old wall of the screen wall may change. It is necessary to prevent rainwater from entering the old wall of the screen wall and causing greater risks. In addition, in order to ensure the good solidification effect of the poured concrete, the waterproof cloth 20 and the waterproof cover plate 5 can be well dealt with, providing a safe foundation for construction.

[0050] like Figure 13-14 In the preferred embodiment, in S2, multiple air cushions 3 are installed along the length direction on both sides of the existing position 1 of the old screen wall. One side of the multiple air cushions 3 is abutted against the side wall of the existing position 1 of the old screen wall by a pressure plate 17. The structure of the air cushion 3 is as follows: multiple mounting holes 301 are provided through the air cushion 3. A contact platform 302 is provided on one side of the mounting hole 301. The air cushion 3 is connected to the pressure plate 17 by a locking nail 22. The air cushion 3 is inserted into the mounting hole 301. At the same time, a pressure plate 17 is provided at the end of the crossbar 401, and the pressure plate 17 abuts against the other side of the air cushion 3. Air cushion 3 is an inflatable air cushion with an external air pump and pressure regulating valve. By adjusting the pressure regulating valve, the pressure of different air cushions 3 can be adjusted adaptively to avoid excessive pressure on relatively weak parts of the old screen wall, which could lead to damage. During the adjustment process, air cushion 3 can stably and fully adhere to the surface of the old screen wall, thus better completing the repair of the old screen wall. Compared with the method of using steel plates for load-bearing, it can effectively solve the problem of uneven stress.

[0051] In the preferred embodiment, after the existing position 1 of the old screen wall to be corrected along its length in front of S3, the air cushion 3 is removed intermittently. Then, a structural column 9 is poured at the removal location. Multiple openings 6 are made in the existing position 1 of the old screen wall, and tie bars 19 are inserted into the openings 6, ensuring that the tie bars 19 do not protrude from the other side of the opening 6. The size of the opening 6 is larger than the outer diameter of the tie bars 19. At the same time, calculations based on the initial data are performed to ensure that after the old screen wall is corrected, the opening 6 can still accommodate the tie bars 19 without interference. The tie bars 19 are inside the openings 6, avoiding interference and damage to the air cushion 3 on the other side if they protrude.

[0052] like Figure 15 In the preferred embodiment, in step S5, one air cushion 3 is removed sequentially, and then the opening 6 at the position covered by the air cushion 3 is fixed to the tie bar 19 through the reinforcing steel plate 10. Following this principle, the reinforcing steel plates 10 are installed. A threaded sleeve 21 is fixed to one side of each reinforcing steel plate 10, and the threaded sleeve 21 is threadedly connected to the structural column 9. The installation of the reinforcing steel plates 10 is convenient and efficient; installation at different positions can be completed by rotation. It is also more convenient to adjust the size of the reinforcing steel plates 10 later. After all the reinforcing steel plates 10 are completed, anti-fall nets are installed on the reinforcing steel plates 10 at the four corners to further prevent structural collapse on the old wall where no reinforcing steel plates 10 are installed. On one side of the structural column 9, during initial pouring, bolts are embedded in the adjacent inner walls of two adjacent structural columns 9, and then the anti-fall nets are installed using bolts, thereby stabilizing the space between the spaced structural columns 9. Aesthetic patterns can be set on the anti-fall nets for a better overall appearance.

[0053] In the preferred embodiment, before step S6, the current position 1 of the old screen wall is measured again. Then, based on the initial measurement data, the current position 1 of the old screen wall is compared with the ideal position 12 of the old screen wall. If the current position 1 of the old screen wall still has a left-right tilt in the length direction, left-right correction needs to be completed. Due to the uncertainty of geological structure changes, it is difficult to see that the old screen wall is only tilted or collapsed in one direction, making the repair process relatively inconvenient.

[0054] like Figure 6-8 In the preferred embodiment, when the left and right tilt angle of the existing position 1 of the old screen wall is relatively small, on the tilted side of the existing position 1 of the old screen wall, the first foundation pit 1101 is excavated for the wall foundation 11 located at the lower part of the existing position 1 of the old screen wall. Then, multiple anchor rods 14 are inserted into the first foundation pit 1101, and a support seat 13 is installed at the bottom of the first foundation pit 1101. The anchor rods 14 are lifted by a buffer pad 15 on the upper part of the support seat 13, and the gaps on the lower side of the anchor rods 14 are filled with concrete 16. After the old screen wall is corrected in the thickness direction at the front and back, the overall structural force has been rebalanced, and the center of gravity has returned to the approximate middle position of the overall structure. Therefore, the left and right tilting of both sides can be adjusted at this time with relatively small changes, which can avoid the problem of structural instability. The anchor rod 14 adjusts the foundation below, which can better cope with the stress changes of the soil. During the adjustment process, since the front and back directions are relatively stable, the structure is better stressed and the adjustment is more convenient during the lifting of the support seat 13. The support seat 13 can be slowly adjusted using a threaded lifting frame to avoid the problem of the jack not being able to adjust infinitely during the lifting process. Finally, the gap after the anchor rod 14 is adjusted is filled with concrete 16 to further ensure the support strength of the wall foundation 11.

[0055] like Figure 9-10 In the preferred embodiment, when the left and right tilt angle of the existing position 1 of the screen wall is relatively large, the first foundation pit 1101 and the second foundation pit 1102 are excavated on both sides of the wall foundation 11 located at the lower part of the existing position 1 of the screen wall. Then, multiple anchor rods 14 are inserted into the first foundation pit 1101 and penetrate to the second foundation pit 1102. Support seats 13 are installed at the bottom of the first foundation pit 1101 and the second foundation pit 1102 respectively. The anchor rods 14 are lifted by the buffer pad 15 on the upper part of the support seat 13, and the gaps on the lower side of the anchor rods 14 are filled with concrete 16. When the overall deviation is large, the adjustment process is risky. Therefore, it is necessary to adjust both sides at the same time. During the adjustment process, the support seat 13 in the first foundation pit 1101 is lifted and the support seat 13 in the second foundation pit 1102 is lowered. The structural stability of the wall foundation 11 at the bottom of the old screen wall is ensured throughout the process. Finally, concrete 16 is injected into the gap after the anchor rod 14 is adjusted to further ensure the support strength of the wall foundation 11. The operation is convenient and the effect is good.

[0056] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A method for righting and reinforcing old walls of a screen wall, characterized by: The method comprises the following steps: S1, measuring the data of the existing location of the old wall of the screen wall (1) and the original ground (2); S2, installing a fixing frame (4) outside the existing location of the old wall of the screen wall (1), and then using the fixing frame (4) and a pressing plate (17) to correct the front and back of the existing location of the old wall of the screen wall (1) in the length direction; S3, arranging a construction column (9) on one side of the existing location of the old wall of the screen wall (1), the construction column (9) extending into the original ground (2), and a tie steel bar (19) being arranged to penetrate the existing location of the old wall of the screen wall (1), one side of the tie steel bar (19) being anchored in the construction column (9); S4, arranging a first grouting pipe (8) and a second grouting pipe (18) on the original ground (2) and pouring, one side of the second grouting pipe (18) being arranged to penetrate the construction column (9); S5, fixing a reinforcing steel plate (10) and the other side of the construction column (9) on the other side of the existing location of the old wall of the screen wall (1); S6, removing the fixing frame (4) after the overall structure is stable; In S2, a plurality of air cushions (3) are arranged on both sides of the existing location of the old wall of the screen wall (1) in the length direction, one side of the air cushions (3) being abutted against the side wall of the existing location of the old wall of the screen wall (1) through the pressing plate (17), the structure of the air cushion (3) being that a plurality of mounting holes (301) are arranged to penetrate the air cushion (3), a contact table (302) being arranged on one side of the mounting hole (301), the air cushion (3) being connected through a locking pin (22) and the pressing plate (17), the air cushion (3) being arranged to penetrate the mounting hole (301), and the end of a horizontal rod (401) being arranged to the pressing plate (17), the pressing plate (17) being abutted against the other side of the air cushion (3); After the existing location of the old wall of the screen wall (1) is corrected in the length direction, the air cushions (3) are removed at intervals, the construction column (9) is poured at the removed positions, a plurality of openings (6) are arranged on the existing location of the old wall of the screen wall (1), the tie steel bar (19) is arranged to penetrate the openings (6), and the tie steel bar (19) is ensured not to be exposed from the other side of the opening (6); In S5, the air cushion (3) is removed in sequence, the opening (6) at the shielding position of the air cushion (3) is fixed through the tie steel bar (19) by the reinforcing steel plate (10), the reinforcing steel plate (10) is arranged according to the principle, one side of the reinforcing steel plate (10) being fixed with a threaded sleeve (21), and the threaded sleeve (21) being threadedly connected with the construction column (9).

2. The method for righting and reinforcing old walls of a screen wall according to claim 1, wherein Before S1, the surrounding area of the existing location of the old wall of the screen wall (1) and the original ground (2) is cleaned to ensure the convenience of construction, and the construction materials are placed in the planned area.

3. The method for righting and reinforcing old walls of a screen wall according to claim 2, characterized in that: The original ground (2) around the existing location of the old wall of the screen wall (1) is reinforced to ensure that the tamped soil (201) is stable, and then the concrete cushion layer (202) is poured on the tamped soil (201).

4. The method for righting and reinforcing old walls of a screen wall according to claim 1, wherein S2 In the installation process of the middle fixed frame (4), the ground anchor (403) is inserted on the original site ground (2), the ground anchor (403) is used to complete the fixing of the throw support (402), the throw support (402) is installed on the upside of the top lifting unit (7), the waterproof cover plate (5) is installed on the top of the existing location (1) of the old wall of the lantern, the waterproof cover plate (5) is fixed on the fixed frame (4), and the waterproof cloth (20) is installed on the downside of the waterproof cover plate (5), the waterproof cloth (20) is surrounded on the outside of the existing location (1) of the old wall of the lantern, and the bottom of the fixed frame (4) is supported by the cushion (404), and the synchronous plate (405) is connected between the plurality of cushions (404).

5. The method for righting and reinforcing old walls of a screen wall according to claim 1, characterized in that: Before S6, the existing location (1) of the old wall of the lantern is measured again, and then compared with the ideal location (12) of the old wall of the lantern according to the initial measurement data, when the existing location (1) of the old wall of the lantern still exists left and right inclination in the length direction, the left and right correction needs to be completed.

6. The method for righting and reinforcing old walls of a screen wall according to claim 5, characterized in that: When the left and right inclination angle of the existing location (1) of the old wall of the lantern is relatively small, the first foundation pit (1101) is excavated on the wall base (11) located at the lower part of the existing location (1) of the old wall of the lantern on the inclined side, then a plurality of anchor rods (14) are inserted and driven in the first foundation pit (1101), a support seat (13) is installed at the bottom of the first foundation pit (1101), the anchor rod (14) is jacked up by the buffer pad (15) on the upper part of the support seat (13), and the gap below the anchor rod (14) is filled with the filling concrete (16).

7. The method for righting and reinforcing old walls of a screen wall according to claim 5, characterized in that: When the left and right inclination angle of the existing location (1) of the old wall of the lantern is relatively large, the first foundation pit (1101) and the second foundation pit (1102) are excavated on both sides of the wall base (11) located at the lower part of the existing location (1) of the old wall of the lantern, then a plurality of anchor rods (14) are inserted and driven in the first foundation pit (1101) and the second foundation pit (1102), respectively, a support seat (13) is installed at the bottom of the first foundation pit (1101) and the second foundation pit (1102), the anchor rod (14) is jacked up by the buffer pad (15) on the upper part of the support seat (13), and the gap below the anchor rod (14) is filled with the filling concrete (16).

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