A reinforcement device for green building foundation and construction method thereof

Abstract

The present invention discloses a reinforcement device for a green building foundation and a construction method thereof, comprising a main frame, a grouting reinforcement module and a bearing module, wherein the main frame can be installed on the original building foundation, the main frame has a plurality of support rods, the plurality of support rods are cross-connected horizontally and vertically to form a plurality of installation areas distributed in a square shape, and the bottom surface of each installation area is embedded with a steel plate; a plurality of grouting reinforcement modules are provided and the number thereof corresponds to the number of installation areas, each grouting reinforcement module comprises an anchor column, a seat body, an X-shaped pipe, a grouting pipe and a grouting unit, wherein the seat body is fixedly welded to the bottom side of the installation area, and an anchor column is installed in the seat body, and the anchor column can extend into the interlayer of the original building foundation when the main frame is installed on the original building foundation. The present invention adopts a mode of main frame with grouting reinforcement module, uses the main frame as the bottom support, and uses the grouting reinforcement module to perform grouting reinforcement to ensure the close connection between the base layers and the main frame, thereby suppressing the deformation of the foundation.

Description

Technical Field

[0001] The present invention relates to the field of foundation construction, and in particular to a reinforcement device for a green building foundation and a construction method thereof. Background Art

[0002] The foundation refers to the soil or rock mass that supports the foundation of a building. The soil layer that serves as the foundation of a building is divided into rock, crushed stone soil, sand, silt, clay soil and artificial fill. There are two types of foundations: natural foundations and artificial foundations (composite foundations). Natural foundations are natural soil layers that do not require human reinforcement. Artificial foundations require human reinforcement, and common methods include stone chip cushions, sand cushions, mixed gray soil backfill and compaction. The foundation refers to the part of the soil that bears the influence of the load of the superstructure. The soil or rock mass below the foundation that bears the entire load of the building is called the subgrade. The foundation is not an integral part of the building, but it plays a very important role in ensuring the strength and durability of the building.

[0003] Existing foundation reinforcement methods primarily include anchor rod static pressure precast pile reinforcement technology; high-pressure jet grouting pile reinforcement technology; chemical grouting reinforcement technology; deep mixing pile composite foundation reinforcement technology; column-wrapped new and old foundation connection technology; and rebar-embedded new and old foundation edge connection technology. Existing foundation reinforcement methods mostly use sand piles or lime piles. After drilling a hole in the foundation, sand, stone, soil, or lime is poured into the hole and compacted to form a large-diameter pile body. The pile and the original soil then form a composite foundation, achieving the purpose of reinforcement.

[0004] Publication No. CN112449660B discloses a foundation reinforcement device and a method for reinforcing a foundation, including a foundation reinforcement device using a supporting structure and a transverse prestressing device, and a method for reinforcing a foundation using the foundation reinforcement device. In the foundation reinforcement for a structure that requires expansion, such as an apartment building, the foundation reinforcement device introduces an adjustable transverse prestressing force to allow new piles to share the preload load, existing load, and expansion load before and after expansion. While this method does provide foundation support, it only provides a small area of reinforcement and is not very effective when used on large building foundations. Summary of the Invention

[0005] The purpose of the present invention is to provide a green building foundation reinforcement device and a construction method thereof to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a reinforcement device for a green building foundation and a construction method thereof, comprising a main frame, a grouting reinforcement module and a bearing module, wherein the main frame can be installed on the original building foundation, the main frame has multiple support rods, and the multiple support rods are cross-connected horizontally and vertically to form multiple installation areas distributed in a square, and the bottom surface of each installation area is embedded with a steel plate; the grouting reinforcement modules are provided in plurality and their number corresponds to the number of installation areas, each grouting reinforcement module comprises an anchor column, a seat body, an X-shaped tube, a grouting pipe and a grouting unit, wherein the seat body is fixedly welded to the bottom side of the installation area, and the seat body is equipped with an anchor column, and the anchor column can extend into the interlayer of the original building foundation when the main frame is installed on the original building foundation.

[0007] Preferably, the X-shaped tube is connected to the seat around the installation area. The X-shaped tube is a hollow steel tube with a connecting hole in the middle of its top. The connecting hole is connected to a grouting pipe, which passes through the steel plate at the bottom of the installation area and extends to the upper side of the main frame.

[0008] Preferably, the grouting unit is a hollow columnar structure and is distributed along the end of the X-shaped pipe. The grouting unit is connected to the X-shaped pipe, and an anti-loosening cone section is provided at the top of the grouting unit.

[0009] Preferably, a grouting head is installed in the middle of the grouting unit, and grouting holes are distributed around the grouting head. The external building reinforcement slurry is injected into the X-shaped tube through the grouting pipe, and output to each grouting unit by the X-shaped tube, and the grouting unit outputs the slurry.

[0010] Preferably, the bearing module is installed on each steel plate in the installation area of the main frame. The bearing module has a bearing bottom bracket and a bearing top plate. The bearing bottom bracket cooperates with the groove on the inner side of the installation area and is welded to the steel plate. The bearing top plate is installed on the bearing bottom bracket.

[0011] Preferably, the load-bearing top plate is a cast-in-place concrete top plate with a metal skeleton inside.

[0012] Preferably, a construction method of a reinforcement device for a green building foundation comprises the steps of:

[0013] S1: Use a road crusher to crush the original building foundation, remove the original filling material of the foundation, and pre-grout and repair the honeycombs and voids on the foundation surface;

[0014] S2: Use a dynamic compaction machine to pre-compact the foundation, and then lay the sand and gravel layers;

[0015] S3: Install the main frame on the foundation and connect the main frame tightly to the foundation through anchor columns and anti-loosening cone sections;

[0016] S4: Inject the reinforcement slurry into the grouting pipe. The reinforcement slurry is injected into the grouting unit through the X-shaped pipe and output from the grouting unit.

[0017] S5: After the slurry solidifies, the bearing base is installed on the steel plate of the installation area, and a cast-in-place concrete top plate is installed on the bearing base;

[0018] S6: After the construction is completed, the foundation strength test is carried out.

[0019] Preferably, when installing the main frame, it is necessary to ensure that the main frame is mounted on the base layer at the initial stage of construction, and after the sand layer and gravel layer are paved, the main frame is buried in the base layer.

[0020] Preferably, when grouting into the grouting pipe, the slurry needs to be continuously output. When the slurry fills the gaps between the foundation layers, the output of the slurry is stopped. When the slurry is close to solidifying, concrete filling slurry is injected into the grouting pipe again, so that the concrete filling slurry fills the inside of the grouting pipe and the X-shaped pipe and solidifies.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention adopts a mode of main frame with grouting reinforcement module, with the main frame as the bottom support and the grouting reinforcement module for grouting reinforcement to ensure the close connection between the base layer and the main frame. The solution based on the present invention can improve the anti-deformation ability of the foundation, inhibit foundation deformation, increase the ground bearing capacity, and control instantaneous settlement and consolidation settlement.

[0023] 2. The present invention adopts a newly designed grouting unit, which can be connected to the base layer by using the anti-loosening cone section. The filled reinforced slurry makes the connection between the grouting unit and the base layer tighter. At the same time, the load-bearing module is used as the top support, which can achieve a better reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the ground structure of the main frame in an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the top structure of the main frame in an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of the structure of the grouting unit in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a carrier module mounted on a main frame in an embodiment of the present invention;

[0028] Figure 5 This is an application principle diagram of the present invention.

[0029] In the figure: 1. Main frame; 2. Steel plate; 3. Anchor column; 4. Base; 5. X-shaped pipe; 6. Grouting pipe; 7. Grouting unit; 701. Anti-loosening cone section; 702. Grouting head; 8. Bearing top plate. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] See also Figure 1-5 The present invention provides a technical solution: a reinforcement device for a green building foundation and a construction method thereof, comprising a main frame 1, a grouting reinforcement module and a bearing module, wherein the main frame 1 can be installed on the original building foundation, the main frame 1 has a plurality of support rods, and the plurality of support rods are cross-connected horizontally and vertically to form a plurality of installation areas distributed in a square, and a steel plate 2 is embedded in the bottom surface of each installation area; the grouting reinforcement module is provided in plurality and the number thereof corresponds to the number of installation areas, each grouting reinforcement module comprises an anchor column 3, a seat body 4, an X-shaped tube 5, a grouting pipe 6 and a grouting unit 7, wherein the seat body 4 is fixedly welded to the bottom side of the installation area, and the seat body 4 is equipped with an anchor column 3, and the anchor column 3 can extend into the interlayer of the original building foundation when the main frame 1 is installed on the original building foundation.

[0034] In this embodiment, the X-shaped tube 5 is connected to the base body 4 around the installation area. The X-shaped tube 5 is a hollow steel tube and a connecting hole is provided in the middle of its top. The connecting hole is connected to a grouting pipe 6. The grouting pipe 6 passes through the steel plate 2 at the bottom of the installation area and extends to the upper side of the main frame 1.

[0035] See also Figure 3 In this embodiment, the grouting unit 7 is a hollow columnar structure and is distributed along the end of the X-shaped tube 5. The grouting unit 7 is connected to the X-shaped tube 5, and an anti-loosening cone section 701 is provided at the top of the grouting unit 7.

[0036] In this embodiment, a grouting head 702 is mounted in the middle of the grouting unit 7, and grouting holes are distributed around the grouting head 702. The external building reinforcement slurry is injected into the X-shaped tube 5 through the grouting pipe 6, and is output to each grouting unit 7 by the X-shaped tube 5, and the grouting unit 7 outputs the slurry.

[0037] See also Figure 4 In this embodiment, the bearing module is installed on each steel plate 2 in the installation area of the main frame 1. The bearing module has a bearing bottom bracket and a bearing top plate 8. The bearing bottom bracket cooperates with the groove on the inner side of the installation area and is welded to the steel plate 2. The bearing top plate 8 is installed on the bearing bottom bracket.

[0038] In this embodiment, the load-bearing top plate 8 is a cast-in-place concrete top plate with a metal skeleton inside.

[0039] In this embodiment, a construction method for the green building foundation reinforcement device is also provided, comprising the steps of:

[0040] S1: Use a road crusher to crush the original building foundation, remove the original filling material of the foundation, and pre-grout and repair the honeycombs and voids on the foundation surface;

[0041] S2: Use a dynamic compaction machine to pre-compact the foundation, and then lay the sand and gravel layers;

[0042] S3: Install the main frame 1 on the foundation layer and tightly connect the main frame 1 to the foundation layer through the anchor column 3 and the anti-loosening cone section 701;

[0043] S4: Inject the reinforcement slurry into the grouting pipe 6. The reinforcement slurry is injected into the grouting unit 7 through the X-shaped pipe 5 and output from the grouting unit 7.

[0044] S5: After the slurry solidifies, the bearing base is installed on the steel plate 2 in the installation area, and a cast-in-place concrete top plate is installed on the bearing base;

[0045] S6: After the construction is completed, the foundation strength test is carried out

[0046] In this embodiment, when the main frame 1 is installed, it is necessary to ensure that the main frame 1 is mounted on the base layer at the initial stage of construction, and after the sand layer and gravel layer are paved, the main frame 1 is buried in the base layer.

[0047] In this embodiment, when grouting into the grouting pipe 6, the slurry needs to be continuously output. When the slurry fills the gaps between the foundation layers, the output of the slurry is stopped. When the slurry is close to solidifying, concrete filling slurry is injected into the grouting pipe 6 again, so that the concrete filling slurry fills the inside of the grouting pipe 6 and the X-shaped tube 5 and solidifies.

[0048] In this embodiment, the above-mentioned mode of using the main frame 1 in combination with the grouting reinforcement module is adopted. The main frame 1 is used as the bottom support, and the grouting reinforcement module is used for grouting reinforcement to ensure a close connection between the base layer and the main frame 1. The solution based on the embodiment of the present invention can improve the anti-deformation ability of the foundation, inhibit foundation deformation, increase the ground bearing capacity, and control instantaneous settlement and consolidation settlement.

[0049] In this embodiment, the newly designed grouting unit 7 can be connected to the base layer by using the anti-loosening cone section 701. The filled reinforced slurry makes the connection between the grouting unit 7 and the base layer tighter. At the same time, the load-bearing module is used as the top support, which can achieve a better reinforcement effect.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction method for a green building foundation reinforcement device, characterized in that: The invention comprises a main frame (1), a grouting reinforcement module and a bearing module, wherein the main frame (1) can be installed on the original building foundation, the main frame (1) has a plurality of support rods, the plurality of support rods are cross-connected horizontally and vertically to form a plurality of installation areas distributed in a square shape, and the bottom surface of each installation area is embedded with a steel plate (2); the grouting reinforcement modules are provided in plurality and the number thereof corresponds to the number of installation areas, each grouting reinforcement module comprises an anchor column (3), a seat body (4), an X-shaped tube (5), a grouting tube (6) and a grouting unit (7), wherein the seat body (4) is fixedly welded to the bottom side of the installation area, and the seat body (4) is provided with an anchor column (3), and the anchor column (3) can extend into the interlayer of the original building foundation when the main frame (1) is installed on the original building foundation; The X-shaped tube (5) is connected to the base (4) around the installation area. The X-shaped tube (5) is a hollow steel tube and a connection hole is provided in the middle of the top end thereof. The connection hole is connected to a grouting pipe (6). The grouting pipe (6) passes through the steel plate (2) on the bottom surface of the installation area and extends to the upper side of the main frame (1). The grouting unit (7) is a hollow columnar structure and is distributed along the end of the X-shaped tube (5). The grouting unit (7) is connected to the X-shaped tube (5). The top of the grouting unit (7) is provided with an anti-loosening cone section (701); The grouting unit (7) is provided with a grouting head (702) in the middle thereof, and grouting holes are distributed on the periphery of the grouting head (702). External building reinforcement slurry is injected into the X-shaped tube (5) through the grouting pipe (6), and outputted to each grouting unit (7) through the X-shaped tube (5). The grouting unit (7) then outputs the slurry. The construction method includes the steps of: S1: Use a road crusher to crush the original building foundation, remove the original filling material of the foundation, and pre-grout and repair the honeycombs and voids on the foundation surface; S2: Use a dynamic compaction machine to pre-compact the foundation, and then lay the sand and gravel layers; S3: Install the main frame (1) on the base layer, and connect the main frame (1) tightly to the base layer through the anchor column (3) and the anti-loosening cone section (701); S4: Injecting the reinforcement slurry into the grouting pipe (6); the reinforcement slurry is injected into the grouting unit (7) through the X-shaped pipe (5) and outputted from the grouting unit (7); S5: After the slurry solidifies, the bearing base is installed on the steel plate (2) in the installation area, and a cast-in-place concrete top plate is installed on the bearing base; S6: After the construction is completed, the foundation strength test is carried out; When the main frame (1) is installed, it is necessary to ensure that the main frame (1) is mounted on the base layer at the initial stage of construction, and after the sand layer and gravel layer are paved, the main frame (1) is buried on the base layer; When grouting the grouting pipe (6), the slurry needs to be continuously output. When the slurry fills the gaps between the foundation layers, the output of the slurry is stopped. When the slurry is close to solidification, the concrete filling slurry is injected into the grouting pipe (6) again, so that the concrete filling slurry fills the inside of the grouting pipe (6) and the X-shaped pipe (5) and solidifies.

2. The construction method of a green building foundation reinforcement device according to claim 1, characterized in that: The bearing module is mounted on each steel plate (2) in the installation area of the main frame (1), and the bearing module comprises a bearing bottom bracket and a bearing top plate (8), wherein the bearing bottom bracket cooperates with the groove inside the installation area and is welded to the steel plate (2), and the bearing top plate (8) is mounted on the bearing bottom bracket.

3. The construction method of a green building foundation reinforcement device according to claim 2, characterized in that: The bearing top plate (8) is a cast-in-situ concrete top plate with a metal skeleton inside.

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