Active regulation and control device and method for controlling building settlement

Abstract

The invention relates to the technical field of buildings, and discloses an active regulation and control device and method for controlling building settlement, and the active regulation and control device comprises a foundation soil layer and a building foundation arranged on the foundation soil layer. Through a supporting chain composed of the sinking pile, the hydraulic cylinder, the piston rod and the connecting frame and by combining real-time monitoring data of the total station, the piston rod can be precisely driven to stretch out and draw back, the height of the building foundation can be flexibly adjusted, settlement can be compensated, the device can adapt to tiny deformation of the foundation, and the problem that dynamic adjustment is difficult to achieve in a traditional passive anti-settlement mode is solved; meanwhile, friction locking of the positioning disc and the piston rod is driven by the rotary disc, synchronous sealing of the sealing assembly on the positioning cover is matched, the position of the piston rod can be stably locked when the hydraulic system works normally, and even if the hydraulic system loses pressure, water pressure in the positioning cover can still support the connecting frame through the ejector rod under the action of the height difference and the force storage spring. The double-guarantee mechanism greatly reduces the support failure risk, and improves the reliability, safety and dynamic regulation and control capability of the device.

Description

Technical Field

[0001] This invention belongs to the field of building technology, specifically, it relates to an active control device and method for controlling building settlement. Background Technology

[0002] In the field of building engineering, building settlement is a key issue affecting structural safety and durability. As buildings age, the stress on the foundation soil changes, or external loads disturb the structure, uneven settlement can easily occur, leading to foundation cracking, wall tilting, or even structural instability, seriously threatening life and property safety.

[0003] Currently, commonly used methods for controlling building settlement mainly include two categories: passive anti-settlement and active adjustment. Passive anti-settlement methods often involve deepening the foundation, setting up a cushion layer, or increasing the stiffness of the pile foundation to resist settlement by enhancing the bearing capacity of the foundation. However, these methods cannot dynamically compensate for settlement that has already occurred, and they are difficult to adapt to continuous deformation of the foundation soil. They are also prone to stress concentration within the structure due to rigid resistance, leading to secondary damage. Although active adjustment methods introduce technologies such as hydraulic jacking and pile lifting, when the hydraulic system loses pressure or power is interrupted, the actuator is prone to retraction due to external forces, losing effective support for the building foundation, which carries a high risk.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An active control device for controlling building settlement includes a foundation soil layer and a building foundation set on the foundation soil layer.

[0006] A connecting frame is provided on the foundation of the building, and piles are inserted into the foundation soil layer. A hydraulic cylinder is installed at the end of the pile, and a piston rod is inserted into the hydraulic cylinder. The output end of the piston rod is connected to the bottom of the connecting frame. The hydraulic cylinder has a turntable on its outer wall, which drives the positioning plate on the side wall of the piston rod to rotate. The positioning plate has a notch, and the piston rod has a friction groove. The piston rod is locked after the notch separates from the friction groove. A positioning cover is installed on the hydraulic cylinder housing, and a connecting pipe is installed at the bottom of the positioning cover. A sealing piston is slidably arranged on the positioning cover, and a push rod is installed on the sealing piston. The push rod is connected to the connecting frame. The rotating turntable drives the sealing assembly installed on the connecting pipe to seal the positioning cover filled with water, and ensures the stability of the connecting frame in the event of hydraulic system depressurization.

[0007] In a preferred embodiment of the present invention, an anchor rod is provided inside the building foundation, and a fixing plate is provided at the end of the anchor rod. The bottom of the fixing plate overlaps the building foundation. Support legs are installed at both ends of the connecting frame. An installation plate is provided at the bottom of the support leg. The installation plate overlaps the fixing plate. The cross-sectional area of ​​the end faces of the support leg is greater than the cross-sectional area of ​​the center position of the support leg.

[0008] In a preferred embodiment of the present invention, a locking bolt is provided on the fixing plate, and a mounting hole is provided on the mounting plate, the position of which is adapted to the position of the locking bolt. The locking bolt is inserted into the mounting hole, and a nut is screwed onto the locking bolt. An insert plate is inserted into the side wall of the fixing plate. The insert plate is C-shaped, and one end of the insert plate is inserted into the upper surface of the mounting plate.

[0009] In a preferred embodiment of the present invention, the hydraulic cylinder has a guide groove on its side wall, the turntable is rotatably connected to the guide groove, a synchronizing frame is installed on the turntable, a positioning plate is installed at the end of the synchronizing frame, and the positioning plate is placed on both sides of the piston rod. The positioning plate has a hole inside that matches the outer diameter of the piston rod, and after the notch is separated from the friction groove, the inner side wall of the positioning plate is pressed into contact with the friction groove to position the piston rod.

[0010] In a preferred embodiment of the present invention, a water storage cover is installed at the end of the connecting pipe, and the water storage cover is inserted into a through hole on the surface of the connecting frame. The water storage cover is filled with water, and the water level inside the water storage cover is higher than the height of the top rod end. The height difference causes the water to flow automatically to the positioning cover under the action of gravity. A pressure plate is vertically slidably arranged on the inner wall of the water storage cover, and the pressure plate is attached to the water surface.

[0011] In a preferred embodiment of the present invention, a storage spring is installed inside the positioning cover. One end of the storage spring is installed on the end face of the positioning cover, and the other end of the storage spring is installed on the pressure plate. The compression direction of the storage spring and the movement direction of the pressure plate are both on the same straight line.

[0012] In a preferred embodiment of the present invention, a synchronization plate is installed on the side wall of the water storage cover and the positioning cover, and a mounting bracket is installed at the bottom of the synchronization plate. The end of the mounting bracket is connected to the side wall of the hydraulic cylinder. A top plate is installed on the top of the top rod, and the top of the top plate is connected to the bottom of the connecting bracket. The connecting bracket is in the shape of a boss.

[0013] In a preferred embodiment of the present invention, the sealing assembly includes a sealing cover, which is mounted on a connecting pipe and has a sealing plug inserted into it. The sealing plug is used to seal the connecting pipe. A push rod is mounted on the sealing plug, which moves through the sealing cover. A ball is mounted at the end of the push rod and rolls on the bottom of the turntable. A return spring is sleeved on the push rod, with one end of the return spring engaged with the sealing plug and the other end engaged with the sealing cover.

[0014] In a preferred embodiment of the present invention, a pair of guide blocks are installed at the bottom of the turntable, and a plane is provided at the center of the pair of guide blocks, and inclined surfaces are provided on both sides of the guide blocks. The guide blocks are used to squeeze the push rod to move down, thereby driving the connecting pipe to seal. The position of the notch is the same as the position of the guide block, which is used to ensure that the locking of the piston rod and the connecting pipe are synchronized.

[0015] As a preferred embodiment of the present invention, an active control method for an active control device for controlling building settlement includes the following steps: Step 1: Set up total station monitoring points at key parts of the building foundation, connecting frame and main body of the building, measure the three-dimensional coordinates regularly, calculate the settlement amount and rate by comparing the data, and determine whether a settlement trend has occurred. Step 2: When the settlement data exceeds the threshold or the height needs to be adjusted, the piston rod is driven to extend and retract using the hydraulic system. When extended, the connecting frame and building foundation are raised to compensate for the settlement. Step 3: When the connecting frame moves upward, it drives the top plate, top rod and sealing piston to move upward. The water in the water storage tank flows into the positioning cover through the connecting pipe under the action of the height difference and the storage spring, maintaining pressure balance. Step 4: After the piston rod reaches the target position, rotate the turntable, which drives the positioning plate to rotate through the synchronous frame, so that the notch separates from the friction groove, and the inner wall of the positioning plate is pressed against the friction groove to lock the piston rod. Step 5: When the turntable rotates, the guide block squeezes the ball bearings, pushes the push rod and sealing plug to seal the connecting pipe, the positioning cover seals, and the water pressure, combined with mechanical locking, ensures the stability of the connecting frame and the building foundation.

[0016] Compared with the prior art, the present invention has the following advantages: This invention not only achieves active control and dynamic compensation of building settlement, but also possesses dual locking and emergency protection capabilities. Through a support chain composed of piles, hydraulic cylinders, piston rods, and connecting structures, combined with real-time monitoring data from a total station, the piston rod can be precisely driven to extend and retract, flexibly adjusting the building foundation height. This compensates for settlement and adapts to minor foundation deformations, solving the problem of dynamic adjustment difficulties in traditional passive anti-settlement methods. Simultaneously, through the frictional locking between the turntable-driven positioning plate and the piston rod, along with the synchronous sealing of the positioning cover by the sealing components, the piston rod position can be stably locked during normal hydraulic system operation. Even if the hydraulic system loses pressure, the water pressure inside the positioning cover, under the influence of the height difference and the storage spring, can still support the connecting frame through the top rod. This dual protection mechanism significantly reduces the risk of support failure and improves the reliability, safety, and dynamic control capabilities of the device.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 A plan view of an active control device for controlling building settlement; Figure 2 A three-dimensional diagram of an active control device for controlling building settlement; Figure 3 A cross-sectional view of the pile driving section of an active control device for controlling building settlement; Figure 4 A partial view of an active control device for controlling building settlement. Figure 1 ; Figure 5 A partial view of an active control device for controlling building settlement. Figure 2 ; Figure 6 A partial view of an active control device for controlling building settlement. Figure 3 ; Figure 7 A partial view of an active control device for controlling building settlement. Figure 4 ; Figure 8 A three-dimensional view of the hydraulic cylinder of an active control device for controlling building settlement; Figure 9 A partial view of an active control device for controlling building settlement. Figure 5 ; Figure 10 A cross-sectional view of a water storage hood and connecting pipe of an active control device for controlling building settlement; Figure 11 An active control device for controlling building settlement Figure 10 Enlarged view of point A in the middle.

[0019] In the picture: 1. Foundation soil layer; 11. Building foundation; 12. Connecting frame; 121. Support leg; 122. Mounting plate; 123. Fixing plate; 124. Anchor bolt; 125. Locking bolt; 126. Insert plate; 127. Through hole; 128. Mounting hole; 13. Pile driving; 2. Hydraulic cylinder; 21. Piston rod; 211. Support plate; 22. Turntable; 221. Synchronizing frame; 222. Positioning plate; 223. Notch; 224. Friction groove; 225. Guide groove; 3. Positioning cover; 31. Connecting pipe; 311. Water storage cover; 312. Pressure plate; 313. Storage spring; 314. Synchronization plate; 315. Mounting bracket; 32. Top rod; 321. Top plate; 322. Sealing piston; 33. Sealing cover; 331. Sealing plug; 332. Push rod; 333. Return spring; 334. Ball bearing; 34. Guide block; 341. Flat surface; 342. Inclined surface. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0021] Example 1: As Figures 1 to 11 As shown, an active control device for controlling building settlement includes a foundation soil layer 1 and a building foundation 11 set on the foundation soil layer 1.

[0022] A connecting frame 12 is installed on the building foundation 11. A pile 13 is inserted into the foundation soil layer 1, and the pile 13 penetrates 20m into the foundation soil layer. A hydraulic cylinder 2 is installed at the end of the pile 13, and a piston rod 21 is inserted into the hydraulic cylinder 2. The output end of the piston rod 21 is connected to the bottom of the connecting frame 12. The above structure makes the pile 13, hydraulic cylinder 2, piston rod 21 and connecting frame 12 form a stable force transmission path, providing a reliable support foundation for subsequent active control of building settlement.

[0023] The outer wall of the hydraulic cylinder 2 has a turntable 22 that rotates, and the turntable 22 is used to drive the positioning disk 222 set on the side wall of the piston rod 21 to rotate. The positioning disk 222 has a notch 223, and the piston rod 21 has a friction groove 224. When the notch 223 separates from the friction groove 224, the piston rod 21 is locked. This design ensures that the piston rod 21 can be reliably locked under specific conditions. Through the cooperation of the notch 223 and the friction groove 224, the accuracy and stability of the piston rod 21 locking are improved.

[0024] A positioning cover 3 is installed on the housing of the hydraulic cylinder 2. A connecting pipe 31 is installed at the bottom of the positioning cover 3. A sealing piston 322 is slidably mounted on the positioning cover 3. A push rod 32 is installed on the sealing piston 322 and is connected to the connecting frame 12. The rotating turntable 22 drives the sealing assembly installed on the connecting pipe 31 to seal the positioning cover 3 when it is filled with water, thus ensuring the stability of the connecting frame 12 in the event of hydraulic system depressurization. Through the sealing effect of the sealing assembly on the positioning cover 3, combined with the connection between the push rod 32 and the connecting frame 12, the stability of the connecting frame 12 is effectively guaranteed when the hydraulic system depressurizes, thereby improving the safety of the device.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in a specific embodiment, an anchor rod 124 is installed inside the building foundation 11, and a fixing plate 123 is installed at the end of the anchor rod 124. The bottom of the fixing plate 123 overlaps the building foundation 11. Support legs 121 are installed at both ends of the connecting frame 12, and mounting plates 122 are installed at the bottom of the support legs 121. The mounting plates 122 overlap the fixing plates 123. The cross-sectional area of ​​the end faces of the support legs 121 is larger than the cross-sectional area of ​​the center position of the support legs 121. The cooperation of the anchor rod 124, fixing plate 123, support legs 121 and mounting plate 122 enhances the stability of the connection between the connecting frame 12 and the building foundation 11. The cross-sectional design of the support legs 121, which is large at both ends and small in the middle, saves materials while ensuring support strength.

[0026] like Figure 4 and Figure 5 As shown, the fixing plate 123 is further provided with a locking bolt 125, and the mounting plate 122 has a mounting hole 128, the position of which is adapted to the position of the locking bolt 125. The locking bolt 125 is inserted into the mounting hole 128, and a nut is screwed onto the locking bolt 125. A C-shaped insert plate 126 is inserted into the side wall of the fixing plate 123, and one end of the insert plate 126 is inserted into the upper surface of the mounting plate 122. The cooperation between the locking bolt 125 and the mounting hole 128, as well as the setting of the C-shaped insert plate 126, further strengthens the connection between the mounting plate 122 and the fixing plate 123, prevents relative sliding between the two, and improves the stability of the overall structure.

[0027] Example 2: The difference between this example and the above examples is as follows: Figure 6 , Figure 7 and Figure 8As shown, the hydraulic cylinder 2 has a guide groove 225 on its side wall. The turntable 22 is rotatably connected to the guide groove 225. A timing frame 221 is mounted on the turntable 22, and a positioning plate 222 is mounted at the end of the timing frame 221. The positioning plate 222 is positioned on both sides of the piston rod 21. The positioning plate 222 has a hole inside that matches the outer diameter of the piston rod 21. After the notch 223 separates from the friction groove 224, the inner side wall of the positioning plate 222 makes contact with the friction groove 224 to position the piston rod 21. The guide groove 225 provides a stable rotation trajectory for the turntable 22. The timing frame 221 drives the positioning plate 222 to rotate, thereby positioning the piston rod 21. The contact between the inner side wall of the positioning plate 222 and the friction groove 224 improves the reliability of the positioning of the piston rod 21 and ensures the precise fixation of the piston rod 21.

[0028] Example 3: The difference between this example and the above examples is as follows: Figure 7 , Figure 9 and Figure 10 As shown, a water storage cover 311 is installed at the end of the connecting pipe 31, and the water storage cover 311 is inserted into the through hole 127 opened on the surface of the connecting frame 12. The water storage cover 311 is filled with water, and the water level inside the water storage cover 311 is higher than the height of the end of the top rod 32. Thus, the water automatically flows to the positioning cover 3 under the action of gravity due to the height difference. A pressure plate 312 is vertically slidably installed on the inner wall of the water storage cover 311. The pressure plate 312 is attached to the water surface. A storage spring 313 is installed inside the positioning cover 3. One end of the storage spring 313 is installed on the end face of the positioning cover 3, and the other end of the storage spring 313 is installed on the pressure plate 312. The compression direction of the storage spring 313 and the movement direction of the pressure plate 312 are both on the same straight line. The water storage cover 311, pressure plate 312 and energy storage spring 313 are designed to ensure that water can flow smoothly to the positioning cover 3 by utilizing the height difference and the elasticity of the energy storage spring 313, thereby maintaining the pressure balance inside the positioning cover 3 and facilitating the stable operation of the sealing piston 322 and the push rod 32.

[0029] like Figure 6 and Figure 9 As shown, in a specific embodiment, a synchronization plate 314 is installed on the sidewalls of the water storage cover 311 and the positioning cover 3. A mounting bracket 315 is installed at the bottom of the synchronization plate 314. The end of the mounting bracket 315 is connected to the sidewall of the hydraulic cylinder 2. A top plate 321 is installed on the top of the push rod 32. The top of the top plate 321 is connected to the bottom of the connecting frame 12, and the connecting frame 12 is in the shape of a boss. The synchronization plate 314 and the mounting bracket 315 connect the water storage cover 311, the positioning cover 3, and the hydraulic cylinder 2 into a whole, enhancing the integrity and stability of the structure. The top plate 321 enhances the reliability of the connection between the push rod 32 and the connecting frame 12.

[0030] like Figure 8 , Figure 10 and Figure 11 As shown, further, the sealing assembly includes a sealing cover 33, which is mounted on the connecting pipe 31. A sealing plug 331 is inserted into the sealing cover 33 to seal the connecting pipe 31. A push rod 332 is mounted on the sealing plug 331, which movably passes through the sealing cover 33. A ball bearing 334 is mounted at the end of the push rod 332, rolling on the bottom of the turntable 22. A return spring 333 is sleeved on the push rod 332. One end of the piston rod 331 is engaged with the sealing plug 331, and the other end is engaged with the sealing cover 33. A pair of guide blocks 34 are installed at the bottom of the turntable 22, and a flat surface 341 is provided at the center of the pair of guide blocks 34. The two end faces of the guide blocks 34 are provided with inclined surfaces 342. The guide blocks 34 are used to press the push rod 332 downward, thereby driving the connecting pipe 31 to seal. The position of the notch 223 is the same as the position of the guide block 34, which is used to ensure that the locking of the piston rod 21 and the connecting pipe 31 are synchronized. The cooperation of the sealing cover 33, sealing plug 331, push rod 332, return spring 333 and guide block 34 in the sealing assembly realizes the synchronous sealing of the connecting pipe 31 when the turntable 22 rotates. The design of the inclined surface 342 and the flat surface 341 ensures the accuracy of the movement of the sealing plug 331, and further ensures the stability of the device.

[0031] This invention also discloses an active control method for an active control device for controlling building settlement, the steps of which are as follows: Step 1: Set up total station monitoring points at the building foundation 11, connecting frame 12 and key parts of the main body of the building, measure the three-dimensional coordinates regularly, calculate the settlement amount and rate by comparing the data, and determine whether a settlement trend has occurred. Step 2: When the settlement data exceeds the threshold or the height needs to be adjusted, the piston rod 21 is driven to extend and retract using the hydraulic system. When extended, the connecting frame 12 and the building foundation 11 are raised to compensate for the settlement. Step 3: When the connecting frame 12 moves upward, it drives the top plate 321, the top rod 32 and the sealing piston 322 to move upward. The water in the water storage hood 311 flows into the positioning hood 3 through the connecting pipe 31 under the action of the height difference and the force storage spring 313, maintaining pressure balance. Step 4: After the piston rod 21 reaches the target position, rotate the turntable 22, and drive the positioning plate 222 to rotate through the synchronous frame 221, so that the notch 223 separates from the friction groove 224, and the inner wall of the positioning plate 222 is pressed against the friction groove 224, locking the piston rod 21. Step 5: When the turntable 22 rotates, the guide block 34 squeezes the ball 334, pushes the push rod 332 and the sealing plug 331 to block the connecting pipe 31, the positioning cover 3 seals, and the water pressure cooperates with the mechanical locking to ensure the stability of the connecting frame 12 and the building foundation 11.

[0032] The implementation principle of the active control device for controlling building settlement according to the present invention is as follows: The pile 13 is fixed inside the foundation soil layer 1. The hydraulic cylinder 2 at its end is connected to the connecting frame 12 above the building foundation 11 via the piston rod 21, forming a support chain of "foundation-pile-hydraulic cylinder-building foundation". During the use of the building, total station monitoring points are set up on the building foundation 11, the connecting frame 12 and key structural parts of the building. The total station will periodically and accurately measure the three-dimensional coordinates of these monitoring points. By comparing the coordinate data at different time points, the settlement amount and settlement rate of each monitoring point are calculated to determine whether the building is showing a settlement trend. When the settlement data monitored by the total station exceeds the preset threshold, it indicates that the building is showing a settlement trend, or when the building height needs to be adjusted due to other needs, the piston rod 21 in the hydraulic cylinder 2 is driven to extend and retract through the hydraulic system (the hydraulic system adopts conventional technical means in this field, and its specific structure and working principle are not the inventive point of this invention, so they will not be described in detail).

[0033] When the piston rod 21 extends, it lifts the connecting frame 12, causing the building foundation 11 to rise to compensate for settlement. When the piston rod 21 shortens, it can adapt to minor deformations of the foundation, achieving dynamic control of settlement. During this process, the building foundation 11 is fixed to the fixing plate 123 by the anchor rod 124, and the support leg 121 of the connecting frame 12 overlaps the fixing plate 123 by the mounting plate 122. With the double fixation of the locking bolt 125 and the C-shaped insert plate 126, the rigid connection between the connecting frame 12 and the building foundation 11 is ensured, avoiding relative displacement during the support process. The cross-sectional design of the support leg 121, which is large at both ends and small in the middle, can not only ensure a stable connection between the two ends and the mounting plate 122 and the connecting frame 12, but also reduce material consumption and distribute stress.

[0034] After the connecting frame 12 moves upward, the connecting frame 12 drives the top plate 321 and the top rod 32 to move upward. The top rod 32 pushes the sealing piston 322 to move upward synchronously inside the positioning cover 3. At this time, the internal space of the positioning cover 3 expands. Under the action of the height difference and the storage spring 313, the water in the water storage cover 311 flows into the positioning cover 3 through the connecting pipe 31 to fill the space created after the sealing piston 322 moves upward, and maintain the pressure balance inside the positioning cover 3.

[0035] After the above operations are completed, the operator needs to lock the piston rod 21. The operator needs to rotate the turntable 22, which rotates along the guide groove 225 on the side wall of the hydraulic cylinder 2. The turntable 22 drives the positioning discs 222 on both sides of the piston rod 21 to rotate synchronously through the synchronous frame 221. In the initial state, the notch 223 of the positioning disc 222 is opposite to the friction groove 224 on the piston rod 21. At this time, the piston rod 21 can slide freely under the drive of the hydraulic system. However, when the turntable 22 rotates to a certain angle, the notch 223 of the positioning disc 222 separates from the friction groove 224, and the inner side wall of the positioning disc 222 is in close contact with the friction groove 224. The friction force is used to lock the piston rod 21, preventing it from shifting during the support process and ensuring the stability of the connecting frame 12 and the building foundation 11.

[0036] At the same time, when the turntable 22 rotates, the guide block 34 at its bottom rotates accordingly. The inclined surfaces 342 on both sides of the guide block 34 gradually come into contact with and squeeze the ball bearings 334 of the sealing assembly on the connecting pipe 31, pushing the ball bearings 334 to drive the push rod 332 to move towards the connecting pipe 31. The push rod 332 compresses the return spring 333, thereby driving the sealing plug 331 to be inserted into the connecting pipe 31, completing the sealing of the connecting pipe 31, so that the positioning cover 3 filled with water is in a sealed state.

[0037] Even in the event of hydraulic system depressurization, the sealing state of the positioning cover 3 and the internal water pressure can still provide effective support for the connecting frame 12 through the top rod 32 and the top plate 321. Combined with the mechanical locking of the piston rod 21, this provides double protection for the stability of the connecting frame 12 and the building foundation 11, avoiding the risk of building settlement due to support failure. This invention further improves the reliability of the device in active control and emergency protection by working in conjunction with the sealing components, energy storage structure and locking mechanism, thereby achieving effective control of building settlement throughout the entire process.

Claims

1. An active control device for controlling building settlement, comprising a foundation soil layer (1) and a building foundation (11) disposed on the foundation soil layer (1), characterized in that: A connecting frame (12) is provided on the building foundation (11), and a pile (13) is inserted into the foundation soil layer (1). A hydraulic cylinder (2) is installed at the end of the pile (13), and a piston rod (21) is inserted into the hydraulic cylinder (2). The output end of the piston rod (21) is connected to the bottom of the connecting frame (12). The hydraulic cylinder (2) has a turntable (22) rotating on its outer wall, and the turntable (22) is used to drive the positioning disk (222) provided on the side wall of the piston rod (21) to rotate. The positioning disk (222) has a notch (223) and the piston rod (21) has a friction groove (224). After the notch (223) separates from the friction groove (224), the piston rod (21) is locked. A positioning cover (3) is installed on the housing of the hydraulic cylinder (2). A connecting pipe (31) is installed at the bottom of the positioning cover (3). A sealing piston (322) is slidably arranged on the positioning cover (3). A push rod (32) is installed on the sealing piston (322), and the push rod (32) is connected to the connecting frame (12). The rotating turntable (22) drives the sealing assembly installed on the connecting pipe (31) to seal the positioning cover (3) filled with water, and ensures the stability of the connecting frame (12) in the event of pressure loss in the hydraulic system.

2. The active control device for controlling building settlement according to claim 1, characterized in that, An anchor rod (124) is provided inside the building foundation (11). A fixing plate (123) is provided at the end of the anchor rod (124). The bottom of the fixing plate (123) overlaps the building foundation (11). Support legs (121) are installed at both ends of the connecting frame (12). An installation plate (122) is provided at the bottom of the support leg (121). The installation plate (122) overlaps the fixing plate (123). The cross-sectional area of ​​the end face of the support leg (121) is greater than the cross-sectional area of ​​the center position of the support leg (121).

3. The active control device for controlling building settlement according to claim 2, characterized in that, The fixing plate (123) is provided with a locking bolt (125), and the mounting plate (122) is provided with a mounting hole (128), and the position of the mounting hole (128) is adapted to the position of the locking bolt (125). The locking bolt (125) is inserted into the mounting hole (128), and a nut is screwed onto the locking bolt (125). The fixing plate (123) is provided with a plug plate (126) inserted into the side wall. The plug plate (126) is C-shaped, and one end of the plug plate (126) is inserted into the upper surface of the mounting plate (122).

4. The active control device for controlling building settlement according to claim 1, characterized in that, The hydraulic cylinder (2) has a guide groove (225) on its side wall. The turntable (22) is rotatably connected to the guide groove (225). A timing frame (221) is installed on the turntable (22). A positioning plate (222) is installed at the end of the timing frame (221). The positioning plate (222) is placed on both sides of the piston rod (21). A hole matching the outer diameter of the piston rod (21) is opened inside the positioning plate (222). After the notch (223) separates from the friction groove (224), the inner side wall of the positioning plate (222) is pressed into contact with the friction groove (224) to position the piston rod (21).

5. The active control device for controlling building settlement according to claim 1, characterized in that, The end of the connecting pipe (31) is equipped with a water storage cover (311), and the water storage cover (311) is inserted into the through hole (127) opened on the surface of the connecting frame (12). The water storage cover (311) is filled with water, and the water level inside the water storage cover (311) is higher than the height of the top rod (32). The water automatically flows to the positioning cover (3) under the action of gravity due to the height difference. A pressure plate (312) is vertically slidably arranged on the inner side wall of the water storage cover (311), and the pressure plate (312) is attached to the water surface.

6. The active control device for controlling building settlement according to claim 5, characterized in that, The positioning cover (3) is equipped with a power storage spring (313). One end of the power storage spring (313) is installed on the end face of the positioning cover (3), and the other end of the power storage spring (313) is installed on the pressure plate (312). The compression direction of the power storage spring (313) and the movement direction of the pressure plate (312) are both on the same straight line.

7. The active control device for controlling building settlement according to claim 5, characterized in that, Synchronous plates (314) are installed on the side walls of the water storage cover (311) and the positioning cover (3). A mounting bracket (315) is installed at the bottom of the synchronous plate (314). The end of the mounting bracket (315) is connected to the side wall of the hydraulic cylinder (2). A top plate (321) is installed on the top of the top rod (32). The top of the top plate (321) is connected to the bottom of the connecting frame (12), and the connecting frame (12) is in the shape of a boss.

8. The active control device for controlling building settlement according to claim 1, characterized in that, The sealing assembly includes a sealing cover (33), which is mounted on the connecting pipe (31). A sealing plug (331) is inserted into the sealing cover (33) to seal the connecting pipe (31). A push rod (332) is mounted on the sealing plug (331). The push rod (332) moves through the sealing cover (33). A ball bearing (334) is mounted at the end of the push rod (332). The ball bearing (334) rolls on the bottom of the turntable (22). A return spring (333) is sleeved on the push rod (332). One end of the return spring (333) is engaged with the sealing plug (331), and the other end is engaged with the sealing cover (33).

9. The active control device for controlling building settlement according to claim 1, characterized in that, A pair of guide blocks (34) are installed at the bottom of the turntable (22), and a plane (341) is provided at the center of the pair of guide blocks (34), and inclined surfaces (342) are provided on both sides of the guide blocks (34). The guide blocks (34) are used to squeeze the push rod (332) to move down, thereby driving the connecting pipe (31) to seal. The position of the notch (223) is the same as the position of the guide block (34), which is used to ensure that the locking of the piston rod (21) and the connecting pipe (31) are synchronized.

10. An active control method for controlling building settlement, characterized in that, An active control device for controlling building settlement, applicable to any one of claims 1 to 9, comprising the following steps: Step 1: Set up total station monitoring points on the building foundation (11), connecting frame (12) and key parts of the main body of the building, measure the three-dimensional coordinates regularly, calculate the settlement amount and rate by comparing the data, and determine whether a settlement trend has occurred. Step 2: When the settlement data exceeds the threshold or the height needs to be adjusted, the piston rod (21) is driven to extend and retract using the hydraulic system. When it extends, the connecting frame (12) and the building foundation (11) are raised to compensate for the settlement. Step 3: When the connecting frame (12) moves upward, it drives the top plate (321), the top rod (32) and the sealing piston (322) to move upward. The water in the water storage tank (311) flows into the positioning tank (3) through the connecting pipe (31) under the action of the height difference and the force storage spring (313), maintaining pressure balance; Step 4: After the piston rod (21) reaches the target position, rotate the turntable (22) and drive the positioning plate (222) to rotate through the synchronous frame (221), so that the notch (223) separates from the friction groove (224), and the inner wall of the positioning plate (222) is pressed against the friction groove (224) to lock the piston rod (21). Step 5: When the turntable (22) rotates, the guide block (34) squeezes the ball (334), pushes the push rod (332) and the sealing plug (331) to block the connecting pipe (31), the positioning cover (3) seals, and the water pressure cooperates with the mechanical locking to ensure the stability of the connecting frame (12) and the building foundation (11).

Images