Building foundation reinforcing structure

Abstract

The utility model relates to the technical field of building equipment, in particular to a building foundation reinforcing structure which comprises a foundation soil layer, an anchor rod assembly is arranged at the bottom of the foundation soil layer, a pressure bearing assembly is arranged on one side of the anchor rod assembly, the pressure bearing assembly is arranged in an array mode with a grouting hole as a track, the grouting hole is formed in the top of the foundation soil layer, and the grouting hole is formed in the bottom of the foundation soil layer. The inclination angle is 15 degrees; according to the device, the outer anchor rod, the inner anchor rod, the outer grout outlet hole, the inner grout outlet hole and other components are arranged, the inner anchor rod can rotate to align the inner grout outlet hole with the outer grout outlet hole through the movable sleeving matching relation between the inner anchor rod and the outer anchor rod, and then the device can form a continuous channel through the inner grout outlet hole and the outer grout outlet hole; and the bottom of the foundation soil layer is subjected to grouting reinforcement. The bonding force between the foundation soil layer and the anchor rods is enhanced through grouting reinforcement, and the stability and the bearing capacity of the whole foundation structure are improved.

Description

Technical Field

[0001] This application relates to the field of building equipment technology, and in particular to a building foundation reinforcement structure. Background Technology

[0002] In the field of construction engineering, the stability of the foundation plays a decisive role in the safety and service life of buildings. With the acceleration of urbanization, all kinds of buildings are springing up like mushrooms after rain, and the requirements for the bearing capacity of the foundation are increasing day by day. Traditional foundation reinforcement methods, such as simple compaction and replacement, often prove inadequate when faced with complex geological conditions and large building loads.

[0003] A search revealed Chinese Patent Publication No. CN222390411U, which discloses a building foundation reinforcement structure belonging to the field of static pressure pile driver technology. The structure includes a top plate: columns are symmetrically fixedly connected to the bottom of the top plate, and bases are fixedly connected to the bottom of the columns; fixing screws are expanded and installed on the ground, and the bases are slidably connected to the fixing screws through sliding holes; the columns are connected to an automatic lowering component for driving a first hydraulic press downwards; the automatic lowering component includes insertion holes, a first positioning component, and a second positioning component. Insertion holes are equally spaced in the vertical direction on the columns, and the first and second positioning components are slidably connected to the outer wall of the columns through straight holes. The first positioning component is fixedly connected to the drive end of the first hydraulic press, and the second positioning component is fixedly connected to the outer shell of the first hydraulic press; a lifting component is connected to the top of the top plate for returning the first hydraulic press to its highest point and for traction of the foundation piles. Through the above method, this utility model achieves automated installation of foundation piles, which is beneficial for building foundation reinforcement structures.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: The devices automatically install foundation piles using hydraulic presses, but do not involve a dynamic control mechanism for the grouting process. The problems of uneven grout distribution and poor penetration in traditional grouting processes remain unresolved, easily leading to localized reinforcement failure or material waste. The use of a single-layer flat plate structure fails to distribute grouting pressure in layers, easily causing grout overflow or stress concentration under complex geological conditions, affecting reinforcement quality. Reliance on static pressure pile drivers places stringent requirements on site flatness, making them unsuitable for operations in sloping strata or confined spaces. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a building foundation reinforcement structure.

[0006] This application provides a building foundation reinforcement structure, which adopts the following technical solution:

[0007] A building foundation reinforcement structure includes a foundation soil layer. An anchor bolt assembly is installed at the bottom of the foundation soil layer. A pressure-bearing component is installed on one side of the anchor bolt assembly. The pressure-bearing component is arranged in an array with grouting holes as its trajectory. The grouting holes are opened at the top of the foundation soil layer with an inclination angle of 15°. The anchor bolt assembly includes an outer anchor bolt, an outer grouting hole, a limiting hole, an inner anchor bolt, and an inner grouting hole. The outer anchor bolt is pre-embedded at the bottom of the foundation soil layer. An outer grouting hole is opened on one side of each outer anchor bolt. A limiting hole is opened at the top of each outer anchor bolt. An inner anchor bolt is movably sleeved inside the outer anchor bolt. An inner grouting hole is opened on one side of each inner anchor bolt, and the position of the inner grouting hole corresponds to the position of the outer grouting hole.

[0008] The above scheme enables an adjustable grouting channel through a double-anchor nested structure. By rotating the inner anchor, the alignment of the grout outlet holes can be precisely controlled, ensuring uniform grout distribution and consistent anchoring depth.

[0009] Optionally, the anchor bolt assembly further includes an overflow plate and a swivel. The overflow plate is fixedly installed on the top of the outer anchor bolt, and the horizontal height of the overflow plate is the same as the horizontal height of the foundation soil layer. The swivel is fixedly connected to the top of the inner anchor bolt, and a protrusion is fixedly connected to the bottom of the swivel, and the shape of the protrusion is the same as that of the limiting hole.

[0010] The above scheme effectively prevents grout backflow by designing the overflow prevention plate flush with the foundation surface, and the combination of the rotating protrusion and the limiting hole forms a mechanical angle positioning to ensure construction accuracy.

[0011] Optionally, the pressure-bearing assembly includes a first pressure-bearing plate, a second pressure-bearing plate, and a third pressure-bearing plate. The first pressure-bearing plate, the second pressure-bearing plate, and the third pressure-bearing plate are all fixedly connected to one side of the outer anchor rod, and the edges of the first pressure-bearing plate, the second pressure-bearing plate, and the third pressure-bearing plate coincide with the trajectory of the grouting hole. The area of ​​the third pressure-bearing plate is smaller than that of the second pressure-bearing plate, and the area of ​​the second pressure-bearing plate is smaller than that of the first pressure-bearing plate. The first pressure-bearing plate, the second pressure-bearing plate, and the third pressure-bearing plate are all disposed at the top of the grouting hole.

[0012] Through the above scheme, the three-level gradient bearing plates are progressively distributed along the grout hole trajectory to form a pressure graded dissipation structure, effectively converting the vertical load into the lateral constraint force.

[0013] Optionally, the protrusion at the bottom of the rotating ring forms a rotation limiting structure with the limiting hole. When the inner anchor rod rotates, the protrusion moves within the limiting hole and limits the rotation angle.

[0014] Through the above scheme, the mechanical limiting mechanism controls the rotation angle within the range of 15°-30°, ensuring accurate alignment of the inner and outer slurry outlets while preventing excessive rotation from damaging the components.

[0015] Optionally, a grouting gap is provided between the inner anchor rod and the outer anchor rod, and a continuous grout channel is formed when the axes of the inner grout outlet and the outer grout outlet coincide.

[0016] The above scheme uses a precision grouting gap of 1.5-2.0mm to form a controllable grouting system with aligned grout holes, achieving laminar grout filling and avoiding bubble defects caused by turbulence.

[0017] Optionally, the grouting holes are evenly distributed around the circumference of the foundation soil layer, and the spacing between adjacent grouting holes is 1.2-1.5 times the diameter of the outer anchor rod.

[0018] The above scheme, based on the proportional spacing design of the anchor bolt diameter, ensures the reinforcement coverage density while avoiding stress concentration caused by overlapping grout action zones.

[0019] Optionally, the diameter of the overflow prevention plate is larger than the diameter of the outer anchor bolt, and its edge extends 0.5-1.0m to the outside of the adjacent grouting hole trajectory.

[0020] Through the above scheme, the extended overflow baffle forms an interception zone with a diameter of 120-150cm, effectively blocking the lateral overflow path of the grout and improving the utilization rate of grouting materials by more than 30%.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] 1. This utility model, by setting up components such as outer anchor rods, inner anchor rods, external grouting holes, and internal grouting holes, and through the movable sleeve connection between the inner and outer anchor rods, allows the inner anchor rod to rotate and align the internal and external grouting holes. This achieves the effect of grouting and reinforcing the bottom of the foundation soil layer through a continuous channel formed by the inner and outer grouting holes. Grouting reinforcement enhances the adhesion between the foundation soil layer and the anchor rods, improving the stability and bearing capacity of the entire foundation structure.

[0023] 2. This utility model, by incorporating components such as an overflow prevention plate, a rotating ring, and a limiting hole, utilizes the cooperative relationship between the overflow prevention plate and the foundation soil layer, as well as between the rotating ring and the limiting hole. This allows the overflow prevention plate to effectively prevent grout from overflowing upwards, while the bottom protrusion of the rotating ring moves within the limiting hole, restricting the rotation angle of the inner anchor rod. Thus, this device achieves the effect of maintaining the stability of the grouting area through the overflow prevention plate and precisely controlling the opening angle of the grout outlet hole of the inner anchor rod through the limiting structure, thereby achieving precise control over the grouting volume and position. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0025] Figure 2 This is a partial structural diagram of an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the main structure of the anchor bolt assembly in an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the main structure of the pressure-bearing component in an embodiment of this application;

[0028] Reference numerals in the attached diagram: 1. Foundation soil layer; 2. Anchor bolt assembly; 201. Overflow prevention plate; 202. External anchor bolt; 203. External grouting hole; 204. Limiting hole; 205. Internal anchor bolt; 206. Rotary ring; 207. Internal grouting hole; 3. Pressure bearing assembly; 301. First pressure bearing plate; 302. Second pressure bearing plate; 303. Third pressure bearing plate; 4. Grouting hole. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0030] This application discloses a building foundation reinforcement structure.

[0031] Please see Figure 1 A building foundation reinforcement structure includes a foundation soil layer 1, an anchor bolt assembly 2 at the bottom of the foundation soil layer 1, and a pressure-bearing assembly 3 on one side of the anchor bolt assembly 2. The pressure-bearing assembly 3 is arranged in an array with grouting holes 4 as the trajectory. The grouting holes 4 are opened at the top of the foundation soil layer 1 with an inclination angle of 15°. The grouting holes 4 are evenly distributed around the circumference of the foundation soil layer 1, and the spacing between adjacent grouting holes 4 is 1.2-1.5 times the diameter of the outer anchor bolt 202.

[0032] Please see Figures 2 to 4 Anchor bolt assembly 2 includes an outer anchor bolt 202, an outgoing grout hole 203, a limiting hole 204, an inner anchor bolt 205, and an inner grout outlet hole 207. The outer anchor bolt 202 is pre-embedded at the bottom of the foundation soil layer 1. An outgoing grout hole 203 is provided on one side of the outer anchor bolt 202, and a limiting hole 204 is provided on the top of the outer anchor bolt 202. The inner anchor bolt 205 is movably sleeved inside the outer anchor bolt 202. An inner grout outlet hole 207 is provided on one side of the inner anchor bolt 205, and the position of the inner grout outlet hole 207 corresponds to the position of the outgoing grout hole 203.

[0033] The anchor bolt assembly 2 also includes an overflow plate 201 and a swivel 206. The overflow plate 201 is fixedly installed on the top of the outer anchor bolt 202. The horizontal height of the overflow plate 201 is the same as the horizontal height of the foundation soil layer 1. The swivel 206 is fixedly connected to the top of the inner anchor bolt 205. A protrusion is fixedly connected to the bottom of the swivel 206, and the shape of the protrusion is the same as that of the limiting hole 204.

[0034] The protrusion at the bottom of the rotating ring 206 forms a rotation limiting structure with the limiting hole 204. When the inner anchor rod 205 rotates, the protrusion moves within the limiting hole 204 and limits the rotation angle.

[0035] A grouting gap is provided between the inner anchor rod 205 and the outer anchor rod 202. When the axes of the inner grout outlet 207 and the outer grout outlet 203 coincide, a continuous grout channel is formed.

[0036] The pressure-bearing component 3 includes a first pressure-bearing plate 301, a second pressure-bearing plate 302, and a third pressure-bearing plate 303. The first pressure-bearing plate 301, the second pressure-bearing plate 302, and the third pressure-bearing plate 303 are all fixedly connected to one side of the outer anchor rod 202, and the edges of the first pressure-bearing plate 301, the second pressure-bearing plate 302, and the third pressure-bearing plate 303 coincide with the trajectory of the grouting hole 4. The area of ​​the third pressure-bearing plate 303 is smaller than that of the second pressure-bearing plate 302, and the area of ​​the second pressure-bearing plate 302 is smaller than that of the first pressure-bearing plate 301. The first pressure-bearing plate 301, the second pressure-bearing plate 302, and the third pressure-bearing plate 303 are all located at the top of the outgoing grouting hole 203.

[0037] The diameter of the overflow prevention plate 201 is larger than the diameter of the outer anchor rod 202, and its edge extends 0.5-1.0m to the outside of the trajectory of the adjacent grouting hole 4.

[0038] Further explanation is needed: the anchor bolt assembly 2 mainly consists of components such as the overflow prevention plate 201, the swivel ring 206, and the limiting hole 204. Its function is crucial. The overflow prevention plate 201 is fixed to the top of the outer anchor bolt 202 and is at the same horizontal level as the foundation soil layer 1. Its diameter is larger than that of the outer anchor bolt 202, which can effectively prevent the grout from overflowing upwards during the grouting process, maintain the stability of the grouting area, and ensure that the grout is concentrated on the area at the bottom of the foundation soil layer 1 that needs to be reinforced. The swivel ring 206 is connected to the top of the inner anchor bolt 205. Its bottom protrusion cooperates with the limiting hole 204. When the inner anchor bolt 205 rotates, the protrusion moves in the limiting hole 204, thereby limiting the rotation angle of the inner anchor bolt 205 and precisely controlling the opening angle of the inner grout outlet hole 207. This enables precise control of the grouting volume and grouting position, greatly improving the scientificity and effectiveness of the building foundation reinforcement work.

[0039] The implementation principle of a building foundation reinforcement structure according to an embodiment of this application is as follows:

[0040] First, the equipment is installed by pre-embedding the outer anchor rod 202 at the bottom of the foundation soil layer 1 and fixing the overflow plate 201 to the top of the outer anchor rod 202 so that it is at the same level as the foundation soil layer 1. The outer anchor rod 202 has an outflow grout hole 203 and a limiting hole 204 at the top. At the same time, the inner anchor rod 205 is movably sleeved inside the outer anchor rod 202. The top of the inner anchor rod 205 is connected to a rotating ring 206. The bottom protrusion of the rotating ring 206 is adapted to the shape of the limiting hole 204. The inner anchor rod 205 has an inner outflow grout hole 207.

[0041] Secondly, in the pre-grouting preparation stage, it is necessary to ensure that the initial positions of the inner grout outlet 207 and the outer grout outlet 203 are staggered to prevent the grout from flowing out before it is ready. By rotating the rotating ring 206, the inner anchor rod 205 is rotated to prepare to adjust the position of the grout outlet.

[0042] Next, the grouting process begins. When grouting is required, the rotating ring 206 is rotated, and the inner anchor rod 205 rotates accordingly, causing the inner grout outlet 207 to gradually align with the outer grout outlet 203. As the rotating ring 206 rotates, the bottom protrusion of the rotating ring 206 moves within the limiting hole 204, restricting the rotation angle of the inner anchor rod 205 and precisely controlling the opening angle of the inner grout outlet 207, thereby regulating the grouting volume and grouting position.

[0043] Next, during the grouting process, the overflow prevention plate 201 plays a key role. Because its diameter is larger than that of the outer anchor rod 202 and its edge extends to a specific position, it can effectively prevent the grout from overflowing upwards, maintain the stability of the grouting area, and allow the grout to concentrate on the bottom of the foundation soil layer 1.

[0044] Finally, after a series of operations, the grout is injected into the bottom of the foundation soil layer 1 through the aligned inner grout outlet 207 and outer grout outlet 203 to reinforce the soil layer, improve the stability and bearing capacity of the foundation, and complete the foundation reinforcement work.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A building foundation reinforcement structure, comprising a foundation soil layer (1), characterized in that: An anchor assembly (2) is provided at the bottom of the foundation soil layer (1), and a pressure-bearing component (3) is provided on one side of the anchor assembly (2). The pressure-bearing component (3) is arranged in a trajectory array with grouting holes (4). The grouting holes (4) are opened at the top of the foundation soil layer (1) with an inclination angle of 15°. The anchor assembly (2) includes an outer anchor (202), an outer grouting hole (203), a limiting hole (204), an inner anchor (205), and an inner grouting hole (206). 7) The outer anchor rod (202) is pre-embedded at the bottom of the foundation soil layer (1). An external grouting hole (203) is opened on one side of the outer anchor rod (202). A limit hole (204) is opened on the top of the outer anchor rod (202). An inner anchor rod (205) is movably sleeved inside the outer anchor rod (202). An internal grouting hole (207) is opened on one side of the inner anchor rod (205), and the position of the internal grouting hole (207) corresponds to the position of the external grouting hole (203).

2. The building foundation reinforcement structure according to claim 1, characterized in that: The anchor bolt assembly (2) also includes an overflow plate (201) and a swivel (206). The overflow plate (201) is fixedly installed on the top of the outer anchor bolt (202). The horizontal height of the overflow plate (201) is the same as the horizontal height of the foundation soil layer (1). The swivel (206) is fixedly connected to the top of the inner anchor bolt (205). The bottom of the swivel (206) is fixedly connected to a protrusion, and the shape of the protrusion is the same as that of the limiting hole (204).

3. The building foundation reinforcement structure according to claim 1, characterized in that: The pressure-bearing component (3) includes a first pressure-bearing plate (301), a second pressure-bearing plate (302), and a third pressure-bearing plate (303). The first pressure-bearing plate (301), the second pressure-bearing plate (302), and the third pressure-bearing plate (303) are all fixedly connected to one side of the outer anchor rod (202), and the edges of the first pressure-bearing plate (301), the second pressure-bearing plate (302), and the third pressure-bearing plate (303) coincide with the trajectory of the grouting hole (4). The area of ​​the third pressure-bearing plate (303) is smaller than that of the second pressure-bearing plate (302), and the area of ​​the second pressure-bearing plate (302) is smaller than that of the first pressure-bearing plate (301). The first pressure-bearing plate (301), the second pressure-bearing plate (302), and the third pressure-bearing plate (303) are all located at the top of the outgoing grouting hole (203).

4. A building foundation reinforcement structure according to claim 2, characterized in that: The protrusion at the bottom of the rotating ring (206) and the limiting hole (204) form a rotation limiting structure. When the inner anchor rod (205) rotates, the protrusion moves within the limiting hole (204) and limits the rotation angle.

5. A building foundation reinforcement structure according to claim 1, characterized in that: A grouting gap is provided between the inner anchor rod (205) and the outer anchor rod (202), and a continuous grout channel is formed when the axes of the inner grout outlet (207) and the outer grout outlet (203) coincide.

6. A building foundation reinforcement structure according to claim 1, characterized in that: The grouting holes (4) are evenly distributed around the foundation soil layer (1), and the spacing between adjacent grouting holes (4) is 1.2-1.5 times the diameter of the outer anchor rod (202).

7. A building foundation reinforcement structure according to claim 2, characterized in that: The diameter of the overflow prevention plate (201) is larger than that of the outer anchor rod (202), and its edge extends 0.5-1.0m to the outside of the trajectory of the adjacent grouting hole (4).

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