Electric spiral type whole building lifting method and system for existing building

Abstract

The application discloses a kind of electric spiral existing building integral lifting method and system, the method includes the engineering pile being constructed in the ground soil in the two sides of the existing building peripheral wall body, threaded sleeve and its installed electric spiral elevator and its connected synchronous controller are sleeved and slidably installed on each engineering pile, each threaded sleeve is fixedly supported in the bracket hole of engineering pile by telescopic bracket device, the shell of electric spiral elevator is connected with wall body by wall clamping beam, the connection of wall body and ground is cut off, so that the load of existing building is transmitted to electric spiral elevator and engineering pile by wall clamping beam, and the synchronous controller is controlled electric spiral elevator relative to threaded sleeve rotation, so that electric spiral elevator synchronously lifts or lowers existing building.The safety risk of the present application to the integral lifting control of existing building is small, and the synchronism is good, and the lifting height of existing building can be accurately controlled.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to an electric spiral lifting method and system for existing buildings. Background Technology

[0002] In the process of upgrading and renovating existing buildings, it is common to encounter construction projects that involve lifting the entire existing building. A typical approach uses an integrated lifting system consisting of a pallet beam, lifting steel columns, lifting steel beams, jacks, and a lifting reaction beam. However, this system has several drawbacks. Firstly, it is structurally complex, and the force transmission path is excessively long: existing building weight - pallet beam → lifting steel columns → lifting steel beams → jacks → lifting reaction beams → anchor piles. This long force transmission path increases the risk of safety hazards. Furthermore, constructing the pallet beam requires excavating part of the underground soil, damaging a portion of the original building foundation. Secondly, because jacks are used as the lifting device, they can only lift the existing building upwards, not downwards. When adding a basement by lifting the entire existing building, after constructing the basement structure, the existing building needs to be lowered as a whole. When the jacks are unloaded, gravity is used to lower the existing building, making it impossible to control the overall descent. This results in poor safety, stability, and reliability during the overall descent, and consequently, poor accuracy in controlling the height of the entire building's lift. In addition, the jacks have poor synchronization, which can easily lead to lifting deviations and pose safety hazards during the overall lifting of existing buildings. Furthermore, the jacks are prone to oil leakage during use. Summary of the Invention

[0003] The purpose of this invention is to provide an electric spiral lifting method and system for existing buildings, which solves the problems of traditional building lifting systems, such as long force transmission paths leading to significant safety hazards, jacks that can only lift but not lower resulting in poor control accuracy of the overall lifting height of the existing building, poor synchronization between jacks leading to the risk of tilting or collapse of the existing building, and the fact that traditional building lifting systems are constructed underground, requiring the excavation of some underground soil for the construction pallet beam, damaging part of the original building foundation and affecting the vertical load-bearing capacity of the existing building.

[0004] To address the aforementioned technical problems, this invention provides an electric spiral-type overall lifting method for existing buildings, comprising:

[0005] Step S100: Construct several auxiliary piles into the soil below the ground at predetermined positions on both sides of the wall surrounding the existing building and extend them to the ground. On each of the auxiliary piles above the ground, multiple sets of corbel openings are longitudinally spaced.

[0006] Step S200: Install sliding threaded sleeves and electric screw jacks on each of the auxiliary piles above the ground; connect each of the electric screw jacks to a synchronous controller; install telescopic bracket devices on each of the threaded sleeves; insert the telescopic bracket devices into the bracket holes at the corresponding positions on the auxiliary piles corresponding to the threaded sleeves they are connected to, so that each of the threaded sleeves is fixedly supported on the corresponding auxiliary piles through the telescopic bracket devices.

[0007] Step S300: Connect the wall clamping beam between the housing of each of the electric screw jacks and the wall of the adjacent existing building, so that the electric screw jacks and the existing building are connected through the wall clamping beam.

[0008] Step S400: Cut off the connection between the existing building wall and the ground, so that the load of the existing building after the wall is cut off can be transferred to the auxiliary pile through the wall clamping beam, electric screw lift, threaded sleeve, and telescopic bracket device.

[0009] In step S500, the synchronous controller controls all the electric screw jacks to rotate relative to the threaded sleeve, so that all the electric screw jacks synchronously lift and lower the existing building after the wall is cut through the wall clamping beam.

[0010] Furthermore, in step S500 of the electric spiral-type integrated lifting method for existing buildings provided by the present invention, when the electric spiral-type integrated lifting method for existing buildings is used for constructing a new basement below an existing building,

[0011] Before constructing a new basement beneath the existing building, the synchronous controller controls all the electric screw jacks to rotate in one direction relative to the threaded sleeve, so that all the electric screw jacks can simultaneously lift the existing building after cutting the wall to a preset elevation via the wall clamping beam;

[0012] After the construction of the new basement beneath the existing building, the synchronous controller controls all the electric screw lifts to rotate in the opposite direction relative to the threaded sleeve, so that all the electric screw lifts can synchronously lower the existing building after cutting the wall back to the ground through the wall clamping beam.

[0013] Furthermore, the electric spiral lifting method for existing buildings provided by the present invention further includes, in step S500:

[0014] Step S510: When the electric screw jack rises to the top of the threaded sleeve and the lifting height of the existing building after cutting the wall is less than the preset elevation, keep the position of the existing building and the electric screw jack still. Control each electric screw jack to rotate in the opposite direction relative to the threaded sleeve on it in batches through the synchronous controller, so that each threaded sleeve and its connected telescopic bracket device are synchronously lifted upward relative to the auxiliary pile. Before the threaded sleeve is lifted, the corresponding telescopic bracket device is retracted from the bracket hole of the auxiliary pile and moved out. After the threaded sleeve is lifted, the lifted telescopic bracket device is extended and inserted into the bracket hole at the corresponding position of the auxiliary pile to fix and support the threaded sleeve on the corresponding auxiliary pile.

[0015] Step S520: After all the threaded sleeves are pulled back, all the electric screw jacks are controlled to rotate relative to all the threaded sleeves after being lifted by the synchronous controller, so that all the electric screw jacks continue to synchronously lift the existing building after the wall is cut through the wall clamping beam.

[0016] In step S530, when the height of the existing building after the wall is cut is equal to the preset elevation, the lifting stops; otherwise, steps S510 and S520 are repeated until the height of the existing building after the wall is cut is equal to the preset elevation.

[0017] Furthermore, in the electric spiral lifting method for existing buildings provided by the present invention, an infrared sensor is installed at the lower edge of the front end of each of the telescopic bracket devices, and the infrared sensor is connected to the synchronous controller.

[0018] During the upward retraction of the corresponding threaded sleeve and its connected telescopic bracket device relative to the auxiliary pile, the infrared sensor detects the distance between the telescopic bracket device and the auxiliary pile in real time. When the telescopic bracket device is retracted to the bracket opening position on the section of the auxiliary pile, the infrared sensor senses that the distance between the telescopic bracket device and the auxiliary pile has increased. Then, the telescopic bracket device extends and inserts into the bracket opening of the auxiliary pile, fixing the retracted threaded sleeve to the corresponding auxiliary pile through the telescopic bracket device. At the same time, the synchronous controller controls the corresponding electric screw jack to stop rotating.

[0019] Furthermore, the electric screw-type integral lifting method for existing buildings provided by the present invention, in step S520, controls the electric screw lift in two or more batches, including:

[0020] Step S511: All the electric screw lifts located on one side of the inner and outer walls of the existing building are designated as the first batch;

[0021] Step S512: All the electric screw lifts located on the other side of the inner and outer sides of the existing building wall are designated as the second batch.

[0022] Furthermore, in the electric spiral-type overall lifting method for existing buildings provided by the present invention, when the height of each of the auxiliary piles extending to the ground does not meet the lifting height requirement, the corresponding auxiliary piles are extended upward to increase the height and a corbel opening is reserved.

[0023] Furthermore, the electric spiral lifting method for existing buildings provided by the present invention, wherein the auxiliary piles are steel-concrete composite piles, and the method for constructing a plurality of steel-concrete composite piles into the soil below ground at predetermined positions on both sides of the surrounding walls of the existing building includes:

[0024] Several steel pipe piles are driven into the soil beneath the existing building at predetermined positions on both sides of the surrounding wall. Concrete is poured into each steel pipe pile to form a steel-concrete composite pile. Before pouring concrete into the steel pipe pile, multiple pre-embedded bracket boxes are symmetrically arranged longitudinally at intervals on the steel pipe pile above the ground. After pouring concrete into the steel pipe pile, bracket openings are formed by removing or not removing the bracket boxes.

[0025] To address the aforementioned technical problems, the present invention also includes an electric spiral-type integrated lifting system for existing buildings, comprising:

[0026] Auxiliary piles, consisting of several piles, are constructed into the soil below ground and extend out of the ground at predetermined positions on both sides of the existing building's surrounding walls.

[0027] Several threaded sleeves are fitted and slidably installed on one of the auxiliary piles, one by one;

[0028] The telescopic bracket device is in multiple sets. Each set of the telescopic bracket device is installed on each of the threaded sleeves and inserted into a set of bracket openings that are longitudinally spaced above the ground for the corresponding auxiliary piles.

[0029] Multiple electric screw jacks are rotatably connected to a single threaded sleeve in a one-to-one correspondence.

[0030] A synchronization controller is connected to all of the aforementioned electric screw jacks;

[0031] The wall beam connects the housing of each of the electric screw jacks to the wall of the adjacent existing building.

[0032] Furthermore, in the electric spiral-type integrated lifting system for existing buildings provided by the present invention, an infrared sensor is installed at the lower edge of the front end of the telescopic bracket device, and the infrared sensor is connected to the synchronous controller.

[0033] Furthermore, in the electric spiral-type integrated lifting system for existing buildings provided by the present invention, the clamping beam is an outer ring clamping beam surrounding the perimeter of the existing building, and an inner ring clamping beam surrounding the inner wall of each room of the existing building.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] The electric spiral lifting method and system for existing buildings provided by this invention comprises several auxiliary piles constructed downwards along the ground on both sides of the surrounding walls of the existing building, threaded sleeves slidably installed on each auxiliary pile, an electric spiral jack threadedly connected to the threaded sleeves, a telescopic bracket device installed on the threaded sleeves, and a clamping beam connecting the electric spiral jack and the wall. A synchronous controller controls all electric spiral jacks to lift synchronously upwards relative to the threaded sleeves, thereby lifting the existing building to a predetermined elevation via the electric spiral jacks and the connected clamping beam. The weight load of the existing building is transferred to the auxiliary piles through the electric spiral jacks and threaded sleeves. This short force transmission path reduces the safety hazard of collapse or tilting of the existing building, improves force transmission safety, ensures the lifting safety of the existing building, and has the advantage of good synchronization.

[0036] The electric screw-type existing building overall lifting method and system provided by the present invention enables the electric screw lift to move up and down relative to the threaded sleeve, thereby controlling the existing building to lift and lower, improving the accuracy of lifting the existing building to a predetermined elevation, and overcoming the problem that the jack can only lift upwards and cannot lower downwards, resulting in poor control accuracy of the lifting height of the existing building.

[0037] The electric screw-type method and system for lifting existing buildings provided by this invention ensures the safety, stability and synchronization of the overall lifting of existing buildings by using a synchronous controller to control the synchronous lifting of all electric screw jacks. This avoids the safety risks of tilting or collapsing existing buildings caused by poor synchronization between jacks.

[0038] The electric spiral lifting method and system for existing buildings provided by this invention features threaded sleeves, electric spiral lifters, and wall clamping beams all installed above the ground. This facilitates the construction of the electric spiral lifting system for existing buildings, reduces the installation difficulty, eliminates the need to excavate a portion of the soil below the ground to construct the pallet beam, does not affect the vertical load transfer of the original foundation to the existing building, and ensures the load-bearing safety of the existing building before it is cut off. Attached Figure Description

[0039] Figure 1This is a schematic diagram of the elevation structure of an electric spiral-type integrated lifting system for existing buildings.

[0040] Figure 2 This is a structural schematic diagram of the extended telescopic bracket device in the facade half-section of the electric spiral-type existing building overall lifting system.

[0041] Figure 3 This is a structural schematic diagram of the retracted state of the telescopic bracket device in a half-section of the facade of an electric spiral-type existing building overall lifting system.

[0042] Figure 4 yes Figure 3 Enlarged view of point C in the middle;

[0043] Figure 5 This is a floor plan of an existing building's overall lifting system using an electric spiral type.

[0044] Figure 6 yes Figure 5 A schematic diagram of the facade structure of the existing building at point AA, which is in a lifting state via an electric spiral-type integrated building lifting system.

[0045] Figure 7 yes Figure 5 A schematic diagram of the facade structure of the existing building at point BB, which is in a lifting state via an electric spiral-type integrated lifting system for the existing building.

[0046] Figure 8 yes Figure 5 A schematic diagram of the facade structure of the existing building at point BB in its initial state, achieved through an electric spiral-type integrated lifting system for the existing building.

[0047] Figure 9 yes Figure 5 A schematic diagram of the facade structure of the existing building at point BB, which is lifted to the top of the threaded sleeve by an electric spiral-type integrated lifting system for the existing building.

[0048] Figure 10 yes Figure 5 A schematic diagram of the elevation structure of the first batch of threaded sleeves in the retraction state at point BB;

[0049] Figure 11 yes Figure 5 A schematic diagram of the elevation structure of the second batch of threaded bushings at point BB in the retraction state;

[0050] As shown in the figure:

[0051] 10. Electric screw-type integrated lifting system for existing buildings; 11. Auxiliary piles; 12. Threaded sleeves; 13. Telescopic bracket device; 14. Bracket opening; 15. Electric screw lift; 16. Wall clamp beam; 17. Synchronous controller; 18. Adapter; 19. Infrared sensor.

[0052] 20. Existing buildings; 21. Walls;

[0053] 30. Soil. Detailed Implementation

[0054] The present invention will now be described in detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0055] Please refer to Figures 1 to 7 This invention provides an electric spiral-type integrated lifting system 10 for existing buildings, including auxiliary piles 11, threaded sleeves 12, telescopic bracket devices 13, electric spiral lifts 15, wall clamping beams 16, and synchronous controllers 17, wherein:

[0056] Auxiliary piles 11, consisting of several piles, are constructed into the soil below ground and extend out of the ground at predetermined positions on both sides of the surrounding wall 21 of the existing building 20.

[0057] The threaded sleeves 12 are in several pieces, and are slidably installed on one of the auxiliary piles 11 in a corresponding manner.

[0058] The telescopic bracket device 13 is in multiple sets. Each set of the telescopic bracket device 13 is installed on each of the threaded sleeves 12 and inserted into a set of bracket openings 14 located longitudinally spaced on the corresponding auxiliary piles 11 above the ground. The longitudinal spacing of the sets of bracket openings 14 on the auxiliary piles 11 can be based on the length of the threaded sleeves 12, or it can be based on half the length of the threaded sleeves 12. The upper end of the threaded sleeves 12 has a limiting function.

[0059] Multiple electric screw jacks 15 are rotatably connected to a single threaded sleeve 12, one for each other.

[0060] A synchronization controller 17 is connected to all of the electric screw jacks 15. This facilitates group control of the electric screw jacks 15. The synchronization controller 17 can be a programmable logic controller (PLC) synchronization controller 17.

[0061] The wall clamping beam 16 connects the housing of each of the electric screw jacks 15 and the adjacent wall 21 of the existing building 20. To improve the overall lifting strength of the electric screw jacks 15 over the existing building 20, the wall clamping beam 16 consists of an outer ring wall clamping beam surrounding the perimeter of the existing building 20, and an inner ring wall clamping beam surrounding the inner wall of each room within the existing building 20. The outer and inner ring wall clamping beams ensure a continuous and integral connection between the perimeter wall 21 of the existing building and the walls of each room. Furthermore, the electric screw jacks 15 can lift the existing building as a whole through the continuous and integral wall clamping beam 16, thus improving the overall lifting strength of the existing building 20 and increasing the reliable connection between the wall clamping beam 16, the existing building 20, and the electric screw jacks 15.

[0062] Please refer to Figures 2 to 3 To improve the reliable connection of the threaded sleeve 12 to the auxiliary pile 11, the electric spiral-type integrated lifting system 10 for existing buildings provided in this embodiment of the invention allows each set of telescopic bracket devices 13 to be symmetrically inserted into a set of bracket openings 14 at the corresponding position of the auxiliary pile 11. In this case, each set of telescopic bracket devices 13 can consist of two devices arranged in a straight line. Of course, the number of telescopic bracket devices 13 in each set is not limited to two, nor is it limited to symmetrical insertion; the key is to ensure that the threaded sleeve 12 connected to it is fixedly supported on the auxiliary pile 11.

[0063] Please refer to Figures 1 to 4 To detect whether the telescopic bracket device 13 has risen to the position of the upper bracket opening 14 of the auxiliary pile 11 during the lifting and retraction process, the electric spiral-type integrated lifting system 10 for existing buildings provided in this embodiment of the invention has an infrared sensor 19 installed at the lower edge of the front end of the telescopic bracket device. The infrared sensor 19 is connected to the synchronous controller 17. The infrared sensor 19 can control the timing of the extension and retraction of the telescopic bracket device 13. The telescopic bracket device 13 can be connected to the synchronous controller 17 for extension and retraction control, or it can be controlled by an independent controller. In this case, the infrared sensor 19 can also be connected to the independent controller of the telescopic bracket device 13.

[0064] Please refer to Figures 1 to 3 In order to improve the reliable connection between the threaded sleeve 12 and the telescopic bracket device 13, the electric spiral existing building integrated lifting system 10 provided in this embodiment of the invention has each set of telescopic bracket devices 13 fixedly connected to the threaded sleeve 12 through an adapter 18.

[0065] Please refer to Figures 1 to 11This invention provides an electric spiral lifting method for existing buildings, which employs several electric spiral lifting systems for existing buildings as described in the above embodiments. Specifically, it includes:

[0066] Step S100: Construct several auxiliary piles 11 at predetermined positions on both sides of the existing building 20's surrounding wall 21, extending them into the soil below ground level. Multiple sets of corbel openings 14 are longitudinally spaced on each of the auxiliary piles 11 above ground. The construction depth of the auxiliary piles 11 exceeds the original foundation depth of the existing building 20 to improve vertical bearing capacity. The auxiliary piles 11 can be steel-concrete composite piles. A specific method for constructing several steel-concrete composite piles at predetermined positions on both sides of the existing building 20's surrounding wall 21 can be as follows: drive several steel-concrete composite piles into the soil below the foundation of the existing building 20 at predetermined positions on both sides of the surrounding wall 21; pour concrete into each steel-concrete composite pile to form a steel-concrete composite pile; and before pouring concrete into the steel-concrete composite piles, symmetrically arrange multiple pre-embedded corbel boxes at longitudinal intervals on the steel-concrete composite piles above ground level; after pouring concrete into the steel-concrete composite piles, the corbel boxes are removed or not, forming the corbel openings 14. Among them, the two cow leg openings 14 can be symmetrically set on the auxiliary piles 11.

[0067] In step S200, a sliding threaded sleeve 12 is fitted onto each of the auxiliary piles 11 above the ground, and an electric screw jack 15 is installed on it. Each electric screw jack 15 is connected to a synchronous controller 17. A telescopic bracket device 13 is installed on each threaded sleeve 12. The telescopic bracket device 13 is inserted into the bracket opening 14 at the corresponding position on the auxiliary pile 11 to which the threaded sleeve 12 is connected, so that each threaded sleeve 12 is fixedly supported on the corresponding auxiliary pile 11 by the telescopic bracket device 13. The figure illustrates the case where the telescopic bracket device 13 is installed at the lower end of the threaded sleeve 12.

[0068] In step S300, a clamping beam 16 is connected between the housing of each of the electric screw lifts 15 and the wall 21 of the adjacent existing building 20, so that the electric screw lifts 15 and the existing building 20 are connected through the clamping beam 16.

[0069] In step S400, the connection between the wall 21 of the existing building 20 and the ground is severed, so that the load of the existing building 20 after the wall 21 is severed is transferred to each of the electric screw jacks 15 through the wall clamping beam 16. Then, the load is transferred to the auxiliary piles 11 through the electric screw jacks 15, threaded sleeves 12, and telescopic bracket devices 13.

[0070] Step S500: The synchronous controller 17 controls all the electric screw jacks 15 to rotate relative to the threaded sleeve 12, so that all the electric screw jacks 15 synchronously raise and lower the existing building 20 after cutting off the wall 21 via the wall clamping beam 16. During the raising and lowering of the existing building 20, the threaded sleeve 12 remains stationary on the auxiliary pile 11, while the electric screw jacks 15 move up and down relative to the threaded sleeve 12. Specifically, this can be:

[0071] When the height of the existing building 20 after the wall 21 is cut is less than the preset elevation, the synchronous controller 17 controls all the electric screw lifts 15 to rotate in a certain direction relative to the threaded sleeve 12, so that all the electric screw lifts 15 can synchronously raise the existing building 20 after the wall 21 is cut to the preset elevation through the wall clamping beam 16.

[0072] When the height of the existing building 20 after the wall 21 is cut exceeds the preset elevation, the synchronous controller 17 controls all the electric screw lifts 15 to rotate in the opposite direction relative to the threaded sleeve 12, so that all the electric screw lifts 15 can synchronously lower the existing building 20 after the wall 21 is cut to the preset elevation through the wall clamping beam 16.

[0073] To improve the precise control of the lifting height of the existing building 20, the electric spiral lifting method for the overall lifting of the existing building provided in this embodiment of the invention, in step S500, when the electric spiral lifting method for the overall lifting of the existing building is used to construct a new basement below the existing building, before the construction of the new basement below the existing building 20, controls all the electric spiral lifters 15 to rotate relative to the threaded sleeve 12 in a certain direction through the synchronous controller 17, so that all the electric spiral lifters 15 synchronously lift the existing building 20 after cutting the wall 21 to the preset elevation through the wall clamping beam 16.

[0074] After the construction of the new basement beneath the existing building 20, the synchronous controller 17 controls all the electric screw jacks 15 to rotate in the opposite direction relative to the threaded sleeve 12, so that all the electric screw jacks 15 synchronously lower the existing building 20, after cutting the wall 21, back to the ground via the wall clamping beam 16. Then, the wall clamping beam 16, electric screw jacks 15, telescopic bracket device 13, and threaded sleeve 12 are removed, and the auxiliary piles 11 above ground are cut. After the existing building 20 falls back to the ground, the permanent pile foundation of the new basement provides a vertical support system. Therefore, the auxiliary piles 11 serve as a temporary vertical support system for the existing building 20 and the electric screw jacks 15 before, during, and after the lifting process, but do not provide vertical support after the existing building 20 falls back to the ground.

[0075] The electric spiral lifting method for existing buildings provided in this invention is applicable to the construction of new basements under existing buildings, so as to avoid the existing buildings that have not been lifted from hindering the construction of new basements.

[0076] Please refer to Figures 10 to 11 To improve the precise control of the lifting height of the existing building 20, the electric spiral lifting method for the entire existing building provided in this embodiment of the invention may further include, in step S500:

[0077] In step S510, when the electric screw jack 15 rises to the top of the threaded sleeve 12, causing the lifting height of the existing building 20 after cutting the wall 21 to be less than the preset elevation, the existing building and the electric screw jack 15 remain stationary. The synchronous controller 17 controls each electric screw jack 15 to rotate in the opposite direction relative to the threaded sleeve 12 on it, so that each threaded sleeve 12 and its connected telescopic bracket device 13 are synchronously lifted upwards relative to the auxiliary pile 11. That is, the threaded sleeve 12 is lifted upwards relative to the auxiliary pile 11.

[0078] Before the corresponding threaded sleeve 12 is lifted, the telescopic bracket device 13 connected to it is retracted from the bracket opening 14 of the corresponding auxiliary pile 11; after the corresponding threaded sleeve 12 is lifted back, the lifted threaded sleeve 12 is inserted into the bracket opening 14 at the lifting height of the auxiliary pile 11 connected to it through the telescopic bracket device 13, and the lifted threaded sleeve 12 is fixedly installed on the corresponding auxiliary pile 11.

[0079] While the current batch of threaded sleeves 12 is being lifted, the telescopic bracket device 13 connected to the threaded sleeves 12 of the unlifted batches supports the load of the existing building 20 after the wall 21 is cut off and transfers it to the corresponding auxiliary pile 11. When lifting the remaining batches of threaded sleeves 12, the telescopic bracket device 13 connected to the threaded sleeves 12 of the already lifted batches is inserted into the bracket opening 14 at the corresponding position of the corresponding auxiliary pile 11, so that the telescopic bracket device 13 connected to the threaded sleeves 12 of the already lifted batches supports the load of the existing building 20 after the wall 21 is cut off and transfers it to the corresponding auxiliary pile 11.

[0080] In step S520, after all the threaded sleeves 12 have been pulled back, all the electric screw jacks 15 are controlled by the synchronous controller 17 to rotate relative to all the threaded sleeves 12 after being lifted, so that all the electric screw jacks 15 continue to synchronously lift the existing building 20 after the wall 21 has been cut through the wall clamping beam 16.

[0081] In step S530, when the lifting height of the existing building 20 after cutting the wall 21 is equal to the preset elevation, the lifting stops; otherwise, steps S510 and S520 are repeated until the lifting height of the existing building 20 after cutting the wall 21 is equal to the preset elevation.

[0082] Please refer to Figures 1 to 4 In order to detect whether the telescopic bracket device 13 has risen to the position of the upper bracket opening 14 of the auxiliary pile 11 during the lifting and retraction, the electric spiral existing building overall lifting method provided in this embodiment of the invention installs an infrared sensor 19 at the lower edge of the front end of each telescopic bracket device 13 and connects the infrared sensor 19 to the synchronous controller 17.

[0083] During the upward retraction of the corresponding threaded sleeve 12 and its connected telescopic bracket device 13 relative to the auxiliary pile 11, the infrared sensor 19 detects the distance between the telescopic bracket device 13 and the auxiliary pile 11 in real time. When the telescopic bracket device 13 is retracted to the bracket opening 14 of the section of the auxiliary pile 11, the infrared sensor 19 senses that the distance between the telescopic bracket device 13 and the auxiliary pile 11 has increased. Then, the telescopic bracket device 13 extends and inserts into the bracket opening 14 of the auxiliary pile 11, fixing the retracted threaded sleeve 12 to the corresponding auxiliary pile 11 through the telescopic bracket device 13. At the same time, the synchronous controller 17 controls the corresponding electric screw jack 15 to stop rotating.

[0084] Please refer to Figures 10 to 11 To improve the lifting efficiency of the existing building 20 while ensuring that the load of the existing building is applied to part of the auxiliary piles 11, the electric screw hoisting method for the overall lifting of an existing building provided in this embodiment of the invention, in step S520, allows the electric screw hoist 15 to be controlled in two batches, the method including:

[0085] Step S511: All the electric screw lifts 15 located on one side of the inner or outer side of the wall 21 of the existing building 20 are designated as the first batch.

[0086] Step S512, all the electric screw lifts 15 located on the other side of the inner and outer sides of the wall 21 of the existing building 20 are designated as the second batch.

[0087] To raise the existing building 20 to a predetermined elevation, the electric spiral-type overall lifting method for existing buildings provided in this embodiment of the invention extends the corresponding auxiliary piles 11 upwards and reserves bracket openings 14 when the height of each auxiliary pile 11 extending above the ground is insufficient. When steel-concrete composite piles are used, the steel pipe piles are connected by welding to increase their height.

[0088] The electric spiral lifting method and system for existing buildings provided in this invention comprises an electric spiral lifting system 10 consisting of several auxiliary piles 11 constructed downwards along the ground on both sides of the surrounding wall 21 of the existing building 20, threaded sleeves 12 slidably installed on each auxiliary pile 11, an electric spiral lift 15 threadedly connected to the threaded sleeves 12, a telescopic bracket device 13 installed on the threaded sleeves 12, and a wall clamping beam 16 connected between the electric spiral lift 15 and the wall 21. A synchronous controller 17 controls all electric spiral lifts 15 to lift synchronously upwards relative to the threaded sleeves 12, thereby lifting the existing building 20 to a predetermined elevation via the electric spiral lifts 15 and the connected wall clamping beams 16. The weight load of the existing building 20 is transmitted to the auxiliary piles 11 through the electric spiral lifts 15 and the threaded sleeves 12. This short force transmission path reduces the safety hazard of collapse or tilting of the existing building 20, improves force transmission safety, and ensures the lifting safety of the existing building 20, while also exhibiting good synchronization.

[0089] The electric screw-type existing building overall lifting method and system provided in this embodiment of the invention allows the electric screw lift 15 to move up and down relative to the threaded sleeve 12, thereby controlling the existing building 20 to lift and lower. This improves the accuracy of lifting the existing building 20 to a predetermined elevation and overcomes the problem of poor control accuracy of lifting height of the existing building 20 caused by the jack only being able to lift upwards and not downwards.

[0090] The electric screw-type existing building overall lifting method and system provided in this embodiment of the invention ensures the safety, stability and synchronization of the overall lifting of the existing building 20 by synchronously controlling all electric screw lifters 15 through the synchronous controller 17, and avoids the safety risk of tilting or collapse of the existing building 20 due to poor synchronization between the jacks.

[0091] The electric screw-type existing building overall lifting method and system provided in this embodiment of the invention has the threaded sleeve 12, electric screw lift 15, and wall clamp beam 16 all set on the ground, which facilitates the construction of the electric screw-type existing building overall lifting system 10, reduces the installation difficulty of the electric screw-type existing building overall lifting system 10, eliminates the need to excavate part of the soil along the ground to construct the pallet beam, does not affect the vertical load force transmission of the original foundation to the existing building 20, and ensures the load-bearing safety of the existing building 20 before cutting.

[0092] The electric spiral lifting method and system for existing buildings provided in this invention can avoid the problem of oil leakage when using jacks.

[0093] The electric spiral lifting method and system for existing buildings provided in this invention are applicable to situations where the foundation height of an existing building is increased by lifting it as a whole. It allows for precise control of the overall lifting height of the existing building. It is particularly suitable for construction projects that add basements to existing buildings to expand underground space, enabling the overall lifting and lowering of the existing building. Compared to the jack method, it is not limited by the stroke of the jack and can effectively control the lifting height and safe lowering of the existing building. It has the advantages of good stability, high safety, and excellent reliability.

[0094] This invention is not limited to the specific embodiments described above. Obviously, the embodiments described above are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention are within the scope of protection of this invention. Those skilled in the art can make other modifications and variations to this invention. Therefore, if these modifications and variations of this invention fall within the scope of the claims of this invention, then this invention also intends to include these modifications and variations.

Claims

1. A method of electrically lifting a whole building of an existing building in a spiral shape, characterized in that, The method comprises the following steps: S100, constructing a plurality of auxiliary piles in the soil under the ground at the predetermined positions on both sides of the existing building wall and extending them above the ground, and longitudinally and spacedly arranging a plurality of groups of bracket hole openings on each of the auxiliary piles above the ground; S200, sleeving sliding installation threaded sleeves on each of the auxiliary piles above the ground and installing electric screw jacks on the threaded sleeves, connecting each of the electric screw jacks to a synchronous controller, installing telescopic bracket devices on each of the threaded sleeves, inserting the telescopic bracket devices into the bracket hole openings at the corresponding positions of the auxiliary piles corresponding to the threaded sleeves connected thereto, and fixing and supporting each of the threaded sleeves on the corresponding auxiliary pile through the telescopic bracket device; S300, connecting a wall clamping beam between the housing of each of the electric screw jacks and the wall of the existing building close thereto, and forming a connection between the electric screw jack and the existing building through the wall clamping beam; S400, cutting off the connection between the wall of the existing building and the ground, and transmitting the load of the existing building after the wall is cut off to the auxiliary piles through the wall clamping beam, the electric screw jack, the threaded sleeve and the telescopic bracket device; S500, controlling all the electric screw jacks to rotate relative to the threaded sleeves through the synchronous controller, so that all the electric screw jacks synchronously lift the existing building after the wall is cut off through the wall clamping beam.

2. The electric spiral type existing building integral lifting method according to claim 1, characterized in that, In the step S500, when the electric screw type existing building whole lifting method is used to construct a new basement under the existing building, Before the construction of the new basement under the existing building, all the electric screw jacks are controlled to rotate in a direction relative to the threaded sleeves through the synchronous controller, so that all the electric screw jacks synchronously lift the existing building after the wall is cut off to a predetermined elevation through the wall clamping beam; After the construction of the new basement under the existing building, all the electric screw jacks are controlled to rotate in the opposite direction relative to the threaded sleeves through the synchronous controller, so that all the electric screw jacks synchronously lower the existing building after the wall is cut off back to the ground through the wall clamping beam.

3. The electric spiral type existing building integral lifting method according to claim 1, characterized in that, In the step S500, the method further comprises the following steps: S510, when the electric screw jacks are lifted to the top ends of the threaded sleeves and the lifting height of the existing building after the wall is cut off is less than the predetermined elevation, the positions of the existing building and the electric screw jacks are kept unchanged, each of the electric screw jacks is controlled to rotate in the opposite direction relative to the threaded sleeve thereon in batches through the synchronous controller, so that each of the threaded sleeves and the telescopic bracket device connected thereto is synchronously pulled upward relative to the auxiliary pile, wherein the threaded sleeve retracts and moves out the corresponding telescopic bracket device from the bracket hole opening of the auxiliary pile before the pulling, and the threaded sleeve extends and inserts the telescopic bracket device after the lifting into the bracket hole opening at the corresponding position of the auxiliary pile to fix and support the threaded sleeve on the corresponding auxiliary pile; Step S520, after all the threaded sleeves are pulled back, all the electric screw jacks are controlled by the synchronous controller to rotate relative to all the threaded sleeves after lifting, so that all the electric screw jacks continue to synchronously lift the existing building after cutting off the wall through the cross wall beam; Step S530, when the lifting height of the existing building after cutting off the wall is equal to the preset elevation, stop lifting; otherwise, repeat steps S510 and S520 until the lifting height of the existing building after cutting off the wall is equal to the preset elevation.

4. The electric spiral method for the integral lifting of existing buildings according to claim 3, characterized in that, An infrared sensor is installed at the lower edge of the front end of each telescopic bracket device, and the infrared sensor is connected with the synchronous controller; during the upward pulling back of the corresponding threaded sleeve and the telescopic bracket device connected thereto relative to the auxiliary pile, the distance between the telescopic bracket device and the auxiliary pile is detected in real time by the infrared sensor; when the telescopic bracket device is pulled back upward to the position of the leg hole of the auxiliary pile, the infrared sensor senses that the distance between the telescopic bracket device and the auxiliary pile becomes larger, and then the telescopic bracket device is extended and inserted into the leg hole of the auxiliary pile, so that the pulled back threaded sleeve is fixed and supported on the corresponding auxiliary pile through the telescopic bracket device; at the same time, the synchronous controller controls the corresponding electric screw jack to stop rotating.

5. The electric spiral type existing building integral lifting method according to claim 3, characterized in that, In step S510, the electric screw jacks are controlled in two batches, including: Step S511, all the electric screw jacks located on one side of the inside and outside of the wall of the existing building are the first batch; Step S512, all the electric screw jacks located on the other side of the inside and outside of the wall of the existing building are the second batch.

6. The electric spiral type existing building integral lifting method according to claim 3, characterized in that, When the height of each auxiliary pile extending above the ground does not meet the lifting height, the corresponding auxiliary pile is extended upward for construction and a leg hole is reserved.

7. The electric spiral existing building integral lifting method according to claim 1, characterized in that, The method for constructing a plurality of steel pipe concrete piles in the soil below the ground at the preset positions on both sides of the wall of the existing building includes: A plurality of steel pipe piles are punched into the soil below the ground at the preset positions on both sides of the wall of the existing building to the soil below the existing building, and the steel pipe concrete piles are formed by pouring concrete into each steel pipe pile; before pouring concrete into the steel pipe pile, a plurality of pre-buried leg box are symmetrically and longitudinally arranged on the steel pipe pile above the ground; after pouring concrete into the steel pipe pile, the leg hole is formed by removing or not removing the leg box.

8. An electric spiral building-lifting system for existing buildings, characterized in that, The electric screw type whole building lifting method of claim 1, including: The auxiliary pile is a plurality of steel pipe concrete piles constructed in the soil below the ground at the preset positions on both sides of the wall of the existing building and extending above the ground; The threaded sleeve is a plurality of threaded sleeves corresponding to the steel pipe concrete piles; The telescopic bracket device is a plurality of groups of telescopic bracket devices inserted into the corresponding leg holes of the auxiliary piles above the ground; A plurality of electric screw elevators are connected in rotation one by one on a threaded sleeve; A synchronous controller is connected with all the electric screw elevators; A wall clamping beam is connected between the housing of each electric screw elevator and the wall of the adjacent existing building.

9. The electric helical integrated building lift system for existing buildings according to claim 8, characterized in that, An infrared sensor is installed on the lower edge of the front end of the telescopic bracket device, and the infrared sensor is connected with the synchronous controller.

10. The electric helical existing building integral lifting system according to claim 8, characterized in that, The wall clamping beam is an outer ring wall clamping beam arranged around the periphery of the existing building, and an inner ring wall clamping beam arranged in the inner wall of each room of the existing building.

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