A forced landing deviation correction method for an existing building structure

Abstract

The application discloses a kind of building structure forced landing deviation correction method, comprising the following steps: installing joist and temporary load-bearing structure above the foundation of building, joist is fixedly connected with the load-bearing structure of building, the height of temporary load-bearing structure can be adjusted, and temporary load-bearing structure is arranged between foundation and joist;The load of load-bearing structure is transferred to temporary load-bearing structure by joist, the load-bearing structure between foundation and joist is broken at the position where building needs forced landing, then the height of temporary load-bearing structure is adjusted, so that joist is lowered;When joist reaches the amount of lowering required for deviation correction, restore load-bearing structure.After restoring load-bearing structure, deviation correction of building has been completed, foundation and pile do not need to be exposed, and foundation does not need to be forced down or jacked up, and the deviation correction speed of building can be accurately controlled.

Description

Technical Field

[0001] This invention relates to the field of building alignment correction, specifically to a method for forced landing and alignment correction of existing building structures. Background Technology

[0002] Correction of tilt refers to measures taken to ensure the safety of a building and restore its normal function when the building tilts due to uneven settlement of the foundation, the superstructure deviating from the vertical position, or some other reason caused by the foundation, the building itself. When the tilt of the building exceeds the requirements of relevant national standards and seriously affects the safety and normal use of the building, measures are taken to correct the tilt, straighten, reinforce and stabilize the building.

[0003] When correcting the tilt of a building, the forced landing method and the jacking method are commonly used. The forced landing method involves taking measures such as excavation or softening of the foundation to reduce its stiffness and increase the tilt in the opposite direction. The forced landing method is only suitable for correcting the tilt of buildings with shallow foundations and built on soft soil foundations, and is not suitable for buildings with piles.

[0004] Furthermore, the forced landing method has technical problems such as difficulty in accurately controlling the amount and speed of correction, resulting in poor effectiveness. Summary of the Invention

[0005] The purpose of this invention is to provide a forced landing correction method for existing building structures, in order to solve the technical problems that existing forced landing methods are only applicable to buildings with shallow foundations and built on soft soil foundations, and that it is difficult to accurately control the amount and speed of correction during implementation.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] This application provides a method for forced descent and correction of existing building structures, comprising the following steps: installing a support beam and a temporary load-bearing structure above the foundation of the building; the support beam is fixedly connected to the load-bearing structure of the building; the height of the temporary load-bearing structure is adjustable; the temporary load-bearing structure is positioned between the foundation and the support beam; after transferring the load of the load-bearing structure to the temporary load-bearing structure via the support beam, at the location where forced descent of the building is required, dismantling the load-bearing structure between the foundation and the support beam; then adjusting the height of the temporary load-bearing structure to lower the support beam; and restoring the load-bearing structure when the support beam reaches the required descent amount for correction.

[0008] Furthermore, the load-bearing structure is restored through structural reinforcement measures; after the load-bearing structure is restored, the supporting beam and the temporary load-bearing structure are removed.

[0009] Furthermore, when the building has a basement, the supporting beam and the temporary load-bearing structure are installed in the basement; when the building does not have a basement, the supporting beam and the temporary load-bearing structure are installed on the first floor; the load-bearing structure includes columns and walls, and the temporary load-bearing structure is arranged on both sides of the columns and walls and close to the columns and walls.

[0010] Furthermore, the temporary load-bearing structure includes: a base, a cylindrical box, and a top core; the cylindrical box is a vertically arranged cylinder with open ends, placed on the base, with its bottom closed by the base, and filled with sand. A sand outlet is provided on the side wall of the cylindrical box near its bottom, and the sand outlet is opened and closed by a valve; the top core slides against the inner wall of the cylindrical box, its bottom end is vertically mounted inside the cylindrical box, and its top end is located above the top end of the cylindrical box. When the valve is opened, the top core descends and squeezes the sand inside the cylindrical box through the sand outlet; when adjusting the height of the temporary load-bearing structure, the sand discharge rate of the sand outlet is controlled by the valve, so that the support beam sinks evenly at the design speed.

[0011] Furthermore, a flow meter is installed at the outlet of the sand outlet. During the descent of the support beam, the flow meter monitors the sand discharge rate in real time to adjust the valve opening degree, thereby controlling the descent speed of the support beam.

[0012] Furthermore, when the height of the temporary load-bearing structure is too high, making it difficult to install between the foundation and the support beam: the valve is opened to discharge a portion of the sand inside the silo, thereby reducing the height of the temporary load-bearing structure.

[0013] Furthermore, a sand injection port is formed on the top core, connecting the top and bottom ends of the top core, and a sealing plug is detachably installed on the sand injection port; when the height of the temporary load-bearing structure is too low, so that the load of the load-bearing structure cannot be transferred to the temporary load-bearing structure through the support beam: the height of the top core is increased, sand is injected into the inside of the cylinder through the sand injection port, and the outer wall of the cylinder is struck at the same time to make the sand inside the cylinder evenly distributed, and then the sand injection port is sealed with the sealing plug.

[0014] Furthermore, a top cover is installed at the top of the core, and the core and the top cover are connected by a spherical joint; when the temporary load-bearing structure is set between the foundation and the support beam, the top cover is rotated so that its top surface fits against the bottom surface of the support beam.

[0015] Furthermore, the base includes an upper base and a lower base, which are connected by a spherical joint. The upper base is connected to the bottom end of the cylindrical box, and the lower base is connected to the foundation. When the temporary load-bearing structure is set between the foundation and the support beam, the upper base is rotated so that the center line of the cylindrical box coincides with the direction of gravity.

[0016] Furthermore, a height-adjustable support is installed between the upper base and the lower base; after rotating the upper base so that the center line of the cylinder coincides with the direction of gravity, the support is used to fill the gap between the upper base and the lower base so that the upper base cannot rotate relative to the lower base.

[0017] Compared with the prior art, this application has the following advantages:

[0018] This invention provides a method for forced descent and correction of existing building structures. A temporary load-bearing structure is used to support the building's load. Then, the load-bearing structure is removed, causing the parts of the building that need to be forced to descend to a specified height. After that, the load-bearing structure is restored. During the correction process, the foundation and piles do not need to be exposed, nor is it necessary to force descent or jacking of the foundation. Furthermore, the correction speed of the building can be precisely controlled. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 A schematic diagram of the tilted structure of the building;

[0021] Figure 2 This is a structural schematic diagram illustrating the steps of installing a support beam and a temporary load-bearing structure above the foundation of a building, according to an embodiment of the present invention.

[0022] Figure 3 A schematic diagram of the structural steps for forcing a building to land by breaking the load-bearing structure, according to an embodiment of the present invention;

[0023] Figure 4 This is a structural schematic diagram from another perspective of the steps in an embodiment of the present invention to force a building to land by breaking the load-bearing structure.

[0024] Figure 5 This is a schematic diagram of the steps for restoring the load-bearing structure according to an embodiment of the present invention;

[0025] Figure 6 This is a structural diagram illustrating the steps of dismantling the support beam and temporary load-bearing structure according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of one structure of a sand box according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of a first working condition of another structure of the sand box according to an embodiment of the present invention. The diagram shows the working condition of the sand box before the building is forced to land.

[0028] Figure 9 This is a schematic diagram of a second working condition of another structure of the sand box according to an embodiment of the present invention. The diagram shows the working condition of the sand box after the building is forced to land.

[0029] Figure 10 This is a schematic diagram of the base structure according to an embodiment of the present invention;

[0030] Figure 11 for Figure 10 A cross-sectional view along the AA direction;

[0031] Figure 12 This is an assembly diagram of the base according to an embodiment of the present invention;

[0032] The labels in the diagram represent the following:

[0033] 1-Building; 11-Foundation; 111-Pile; 12-Band; 13-Temporary load-bearing structure; 14-Load-bearing structure; 141-Load-bearing structure demolition section; 2-Base; 21-Upper base; 211-First spherical notch; 22-Lower base; 221-First spherical cup; 222-Through hole; 223-Nut; 23-Support; 231-Screw; 232-Ball head; 233-Wrench groove; 3-Box; 31-Sand; 32-Sand outlet; 33-Valve; 34-Sealing strip; 35-Lifting ring; 4-Top center; 41-Sand injection port; 42-Sealing plug; 43-Second spherical cup; 5-Top cover; 51-Second spherical notch; 6-Sand recovery structure. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Correction of tilt refers to measures taken to ensure the safety of a building and restore its normal function when the building tilts due to uneven settlement of the foundation, the superstructure deviating from the vertical position, or some other reason caused by the foundation, the building itself. When the tilt of the building exceeds the requirements of relevant national standards and seriously affects the safety and normal use of the building, measures are taken to correct the tilt, straighten, reinforce and stabilize the building.

[0036] like Figure 1 As shown, due to the sinking of some piles 111, the foundation 11 of building 1 tilts, which in turn causes the entire building 1 to tilt. When correcting the tilt of building 1, the forced settlement method and the jacking method are usually used. The forced settlement method is to take measures such as excavation or softening of the foundation to reduce its stiffness and increase the tilt in the opposite direction. The forced settlement method is only suitable for correcting the tilt of buildings with shallow foundations and built on soft soil foundations, and is not suitable for buildings with piles 111.

[0037] Furthermore, the forced landing method suffers from technical problems such as difficulty in precisely controlling the amount and speed of tilt correction, resulting in unsatisfactory effects. To address these issues, this specific implementation provides an example of a forced landing and tilt correction method for existing building structures. Please refer to... Figure 2-6 .

[0038] like Figure 2 As shown, a support beam 12 and a temporary load-bearing structure 13 are installed above the foundation 11 of building 1. The support beam 12 is fixedly connected to the load-bearing structure 14 of building 1. The height of the temporary load-bearing structure 13 can be adjusted. The temporary load-bearing structure 13 is set between the foundation 11 and the support beam 12.

[0039] like Figure 3 and 4 As shown, after the load of the load-bearing structure 14 is transferred to the temporary load-bearing structure 13 by the support beam 12, at the location where the building 1 needs to be forced to fall, the load-bearing structure 14 between the foundation 11 and the support beam 12 is broken, and then the height of the temporary load-bearing structure 13 is adjusted to lower the support beam 12.

[0040] like Figure 5 As shown, when the girders 12 reach the required descent amount for correction, the load-bearing structure 14 is restored.

[0041] It should also be noted that:

[0042] The load-bearing structure 14 includes columns and walls, and the temporary load-bearing structure 13 is set on both sides of the columns and walls and is close to the columns and walls.

[0043] The joist 12 may or may not pass through the building 1, and is only arranged above the temporary load-bearing structure 13.

[0044] Demolition of load-bearing structure 14 refers to temporarily cutting off the columns or walls of building 1 to form a load-bearing structure demolition section 141 between foundation 11 and beam 12.

[0045] After the load-bearing structure 14 is restored, the building 1 has completed the correction. There is no need to expose the foundation 11 and piles 111, nor is it necessary to force the foundation 11 to drop or lift. Furthermore, the correction speed of the building 1 can be precisely controlled.

[0046] Optional:

[0047] like Figure 6 As shown, after restoring the load-bearing structure 14, the supporting beam 12 and the temporary load-bearing structure 13 are removed.

[0048] Optional:

[0049] When building 1 has a basement, the joist 12 and the temporary load-bearing structure 13 are installed in the basement;

[0050] When building 1 does not have a basement, the joists 12 and the temporary load-bearing structure 13 are installed on the first floor.

[0051] Furthermore:

[0052] The load-bearing structure 14 was restored through structural reinforcement measures.

[0053] The load on the temporary load-bearing structure 13 is transferred back to the load-bearing structure 14.

[0054] Optional:

[0055] The temporary load-bearing structure 13 includes any one or a combination of sand boxes, sandbags, steel springs, and jacks.

[0056] Furthermore:

[0057] Since the amount of sand discharged from the sandbag is difficult to control and the steel spring cannot be stopped midway, the jack is prone to bursting due to the force direction tilting to the axis of the jack during the rotational movement of the supporting beam 12 as it descends. Therefore, the temporary load-bearing structure 13 is preferably a sand box.

[0058] Specifically, such as Figure 7 As shown.

[0059] The temporary load-bearing structure 13 includes: a base 2, a cylindrical box 3, and a top core 4;

[0060] The cylindrical box 3 is a vertically arranged cylindrical body with open ends. The cylindrical box 3 is placed on the base 2, and the bottom end of the cylindrical box 3 is closed by the base 2. The interior of the cylindrical box 3 is filled with sand 31. A sand outlet 32 ​​is provided on the side wall of the cylindrical box 3 near the bottom end of the cylindrical box 3. The sand outlet 32 ​​is opened and closed by a valve 33.

[0061] The top core 4 slides into the inner wall of the cylindrical box 3. The bottom end of the top core 4 is installed inside the cylindrical box 3 in a liftable manner, and the top end of the top core 4 is located above the top end of the cylindrical box 3. When the valve 33 is opened, the top core 4 descends and squeezes the sand 31 inside the cylindrical box 3 through the sand outlet 32.

[0062] The base 2 is usually made of steel plate, the cylinder 3 is usually made of steel cylinder, and the top core 4 is usually made of steel cylinder with concrete inside.

[0063] Sand 31 is a carefully selected engineering sand. Engineering sand is selected according to its roundness. Before use, ensure the quality and dryness of the engineering sand to guarantee its fluidity under pressure.

[0064] Furthermore:

[0065] When adjusting the height of the temporary load-bearing structure 13, the sand discharge rate of the sand box is controlled by the valve 33 so that the support beam 12 sinks evenly at the design speed.

[0066] Optional:

[0067] A flow meter (not shown in the figure) is installed at the outlet of sand outlet 32. During the descent of support beam 12, the flow meter monitors the sand discharge rate in real time to adjust the opening and closing degree of valve 33, thereby controlling the sand discharge rate of sand box.

[0068] Currently, there is no dedicated flow meter for sand and gravel, but existing flow meters can be used to measure the flow rate of sand and gravel. For example, a tipping bucket flow meter can be placed below the sand outlet 32 ​​to collect the sand and gravel that falls through the sand outlet 32, and the sand flow rate can be calculated.

[0069] Optional:

[0070] The top of the core 4 is fitted with a top cover 5.

[0071] The top cover 5 is used to balance the stress point of the top center 4, and the top cover 5 can be made of I-beam.

[0072] Optional:

[0073] A sand recovery structure 6 is arranged around the base 2. The sand recovery structure 6 is a box shape with the opening facing upward. The sand recovery structure 6 is used to collect the sand 31 that leaves the inside of the cylinder 3 through the sand outlet 32.

[0074] Staff members recover engineering sand through sand recovery structure 6.

[0075] Furthermore:

[0076] There are two different steps to set up the temporary load-bearing structure 13 between the foundation 11 and the joist 12.

[0077] One of the steps is to first place the sand box at the position where the support beam 12 will be poured, and then directly build a template on top of the core 4, pour the support beam 12 in the template. After the support beam 12 is formed, all templates except the template between the support beam 12 and the core 4 are removed.

[0078] Another step is to first pour the support beam 12, measure the distance between the foundation 11 and the support beam 12, adjust the amount of sand 31 inside the sand box so that the height of the sand box is equal to the distance between the foundation 11 and the support beam 12, and then place the sand box between the foundation 11 and the support beam 12.

[0079] If the sand box is too high, open valve 33 to release some sand 31 to lower the height of the sand box.

[0080] If the height of the sand box is too low, lift the top core 4 to separate it from the cylindrical box 3, and then fill the cylindrical box 3 with a portion of sand 31 to increase the height of the sand box.

[0081] Because the height of the cylindrical box 3 and the top core 4 is very high, it is difficult to completely lift the top core 4 out of the cylindrical box 3 from the basement or the first floor. In order to make it easier to inject sand 31 into the cylindrical box 3.

[0082] A sand injection port 41 is formed on the top core 4, connecting the top and bottom ends of the top core 4, and a sealing plug 42 is detachably installed on the sand injection port 41.

[0083] When injecting sand 31 into the inside of the cylindrical box 3, a jack can be used to lift the existing building structure forced landing and correction method 4, then open the sealing plug 42, and inject sand 31 into the inside of the cylindrical box 3 through the sand injection port 41. At the same time, the outer wall of the cylindrical box 3 is knocked to make the sand 31 inside it evenly distributed. After the sand injection is completed, the sand injection port 41 is sealed with the sealing plug 42.

[0084] Furthermore:

[0085] A sealing strip 34 is installed between the cylinder 3 and the top core 4.

[0086] The sealing strip 34 is used to prevent rainwater from entering the interior of the cylinder 3 to avoid the sand 31 from losing its fluidity after becoming wet. Since rainwater usually does not enter the interior of the basement and the first floor, the sealing strip 34 is only used to prevent water from entering the cylinder 3 due to the mistakes of the staff.

[0087] Furthermore:

[0088] The surface of the cylindrical box 3 is connected to a lifting ring 35.

[0089] The lifting ring 35 is used to facilitate the movement of sand boxes by workers.

[0090] Furthermore:

[0091] The method to correct the deviation of building 1 is to lower one end of the support beam 12, so that the support beam 12 rotates around one end of itself. Before the deviation of building 1 is corrected, the foundation 11 is parallel to the support beam 12, while after the deviation of building 1 is corrected, the foundation 11 and the support beam 12 have an angle.

[0092] This results in the bottom of the support beam 12 being able to fit against the top of the temporary load-bearing structure 13 before the correction, but during the correction process, an angle gradually appears between the bottom of the support beam 12 and the top of the temporary load-bearing structure 13.

[0093] When the temporary load-bearing structure 13 uses a sand box, the top of the initial top cover 5 is in contact with the bottom of the support beam 12, while in the later stage, only one side of the top of the top cover 5 is in contact with the bottom of the support beam 12. This causes the load of the support beam 12 to be applied to one side of the top cover 5, and the stress concentration has an adverse effect on the structural strength of the support beam 12 and the sand box.

[0094] In order to solve the above technical problems.

[0095] The top core 4 and the top cover 5 are connected by a spherical joint.

[0096] Specifically, the bottom of the top cover 5 is provided with a second spherical notch 51, and the top of the top core 4 is provided with a second spherical cup 43. The second spherical cup 43 and the second spherical notch 51 are connected to form a spherical pair. During the rotation of the support beam 12, the top of the top cover 5 rotates adaptively to always fit the bottom of the support beam 12.

[0097] Furthermore:

[0098] Since the foundation 11 is inclined, the axis of the cylindrical box 3 arranged perpendicular to the foundation 11 is also inclined. During the unloading process of the sand box, the movement direction of the jack 4 is different from the direction of gravity, which leads to the cylindrical box 3 being subjected to radial force. In order to solve this technical problem.

[0099] The base 2 includes an upper base 21 and a lower base 22, which are connected by a spherical joint. The upper base 21 is connected to the bottom of the cylindrical box 3, and the lower base 22 is connected to the foundation 11.

[0100] Specifically: the bottom of the upper base 21 is provided with a first spherical notch 211, and the top of the lower base 22 is provided with a first spherical bowl 221. The first spherical notch 211 and the first spherical bowl 221 are connected to form a spherical pair.

[0101] Furthermore:

[0102] When the temporary load-bearing structure 13 is set between the foundation 11 and the support beam 12, the center line of the cylinder 3 is made to coincide with the direction of gravity by rotating the upper base 21.

[0103] When the force exerted by the support beam 12 on the top cover 5 is transmitted to the top center 4 through the spherical pair, the force on the top center 4 is along the direction of gravity. Since the center line of the cylinder 3 is also along the direction of gravity, the direction of movement of the top center 4 is the same as the direction of the force it experiences.

[0104] Furthermore:

[0105] When filling the cylinder 3 with sand 31, the distribution of sand 31 is sometimes uneven.

[0106] When the support beam 12 descends, a short relative movement will occur between the bottom surface of the support beam 12 and the top surface of the top cover 5, and the cylinder 3 will be subjected to radial force.

[0107] The above-mentioned reasons can easily cause the centerline of the cylinder 3 to deviate from the direction of gravity. In order to solve this technical problem, such as Figure 10 , 11 As shown in Figures 1 and 12.

[0108] An adjustable support member 23 is installed between the upper base 21 and the lower base 22. The support member 23 is used to fill the gap between the upper base 21 and the lower base 22 so that the upper base 21 cannot rotate relative to the lower base 22.

[0109] Specifically, multiple through holes 222 are formed around the first ball cup 221 on the lower base 22, and a nut 223 is embedded in each through hole 222. The support member 23 includes a screw 231, which is threadedly connected to the nut 223. A ball head 232 is connected to the top of the screw 231. The ball head 232 is used to support the bottom wall of the upper base 21. A wrench groove 233 is formed between the screw 231 and the ball head 232.

[0110] After the staff rotates the cylinder 3 to a vertical position, they use a wrench to rotate the support 23 so that each support 23 is against the bottom wall of the upper base 21.

[0111] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered as falling within the scope of protection of the embodiments of the present invention.

Claims

1. A method for forced landing and correction of existing building structures, characterized in that, Includes the following steps: A supporting beam and a temporary load-bearing structure are installed above the foundation of the building. The supporting beam is fixedly connected to the load-bearing structure of the building. The height of the temporary load-bearing structure is adjustable. The temporary load-bearing structure is located between the foundation and the supporting beam. After the load of the load-bearing structure is transferred to the temporary load-bearing structure via the joist, at the location where the building needs to be lowered, the load-bearing structure between the foundation and the joist is broken, and then the height of the temporary load-bearing structure is adjusted to lower the joist. When the supporting beam reaches the required descent amount for correction, the load-bearing structure is restored.

2. The method for forced landing and correction of existing building structures according to claim 1, characterized in that, The load-bearing structure was restored through structural reinforcement measures; After restoring the load-bearing structure, the supporting beam and the temporary load-bearing structure are removed.

3. The method for forced landing and correction of existing building structures according to claim 1, characterized in that, When the building has a basement, the supporting beam and the temporary load-bearing structure are installed in the basement; when the building does not have a basement, the supporting beam and the temporary load-bearing structure are installed on the first floor. The load-bearing structure includes columns and walls, and the temporary load-bearing structure is disposed on both sides of the columns and walls and is close to the columns and walls.

4. The method for forced landing and correction of existing building structures according to claim 1, characterized in that, The temporary load-bearing structure includes: a base, a cylindrical box, and a top core; The cylindrical box is a vertically arranged cylinder with open ends. The cylindrical box is placed on the base, and the bottom end of the cylindrical box is closed by the base. The inside of the cylindrical box is filled with sand. A sand outlet is provided on the side wall of the cylindrical box near the bottom end of the cylindrical box. The sand outlet is opened and closed by a valve. The top core slides into the inner wall of the cylinder, the bottom end of the top core is vertically mounted inside the cylinder, and the top end of the top core is located above the top end of the cylinder. When the valve is opened, the top core descends and squeezes the sand inside the cylinder through the sand outlet. When adjusting the height of the temporary load-bearing structure, the sand discharge rate of the sand outlet is controlled by the valve, so that the support beam sinks evenly at the design speed.

5. The method for forced landing and correction of existing building structures according to claim 4, characterized in that, A flow meter is installed at the outlet of the sand outlet. During the descent of the support beam, the flow meter monitors the sand discharge rate in real time to adjust the valve opening degree, thereby controlling the descent speed of the support beam.

6. The method for forced landing and correction of existing building structures according to claim 4, characterized in that, When the height of the temporary load-bearing structure is too high, making it difficult to install the temporary load-bearing structure between the foundation and the supporting beam: The valve is opened to discharge a portion of the sand from inside the silo, thereby reducing the height of the temporary load-bearing structure.

7. The method for forced landing and correction of existing building structures according to claim 4, characterized in that, A sand injection port is formed on the top core, connecting the top and bottom ends of the top core, and a sealing plug is detachably installed on the sand injection port; When the height of the temporary load-bearing structure is too low, making it impossible to transfer the load of the load-bearing structure to the temporary load-bearing structure via the supporting beam: Raise the height of the top core, inject sand into the inside of the cylinder through the sand injection port, and simultaneously tap the outer wall of the cylinder to make the sand inside the cylinder evenly distributed. Then, seal the sand injection port with a sealing plug.

8. A method for forced landing and correction of existing building structures according to any one of claims 4-7, characterized in that, A top cover is installed at the top of the core, and the core and the top cover are connected by a spherical joint; When the temporary load-bearing structure is placed between the foundation and the support beam, the top cover is rotated so that its top surface fits against the bottom surface of the support beam.

9. The method for forced landing and correction of existing building structures according to claim 8, characterized in that, The base includes an upper base and a lower base, which are connected by a spherical joint. The upper base is connected to the bottom end of the cylindrical box, and the lower base is connected to the foundation. When the temporary load-bearing structure is placed between the foundation and the support beam, the upper base is rotated so that the center line of the cylinder coincides with the direction of gravity.

10. The method for forced landing and correction of existing building structures according to claim 9, characterized in that, A height-adjustable support is installed between the upper base and the lower base; After rotating the upper base so that the center line of the cylinder coincides with the direction of gravity, the support is used to fill the gap between the upper base and the lower base so that the upper base cannot rotate relative to the lower base.

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