Soft ground foundation reinforcement device and method

Abstract

The present application relates to the technical field of foundation reinforcement, in particular to a soft soil foundation reinforcement treatment device and method, which comprises side plates symmetrically arranged in the soft soil layer, the opposite sides of the two side plates are fixedly connected through a plurality of connecting rods, a drainage assembly for draining water in the soft soil layer between the two side plates is arranged in the side plate, the top surfaces of the two side plates are jointly provided with a drainage assembly, the end of the drainage assembly away from the side plate is provided with a leveling part, a plurality of reinforcement assemblies for collecting water in the soft soil layer and supporting the drainage assembly are arranged below the drainage assembly, the reinforcement assemblies are arranged in the soft soil layer between the two side plates, a backfill layer is filled between the reinforcement assemblies and the drainage assembly, and the backfill layer is filled between the two side plates. Through the drainage assembly arranged on the two side plates, water above the drainage assembly can be effectively drained on the side away from each other of the two side plates, and water above the drainage assembly is effectively prevented from seeping into the soft soil layer between the two side plates.

Description

Technical Field

[0001] This invention relates to the field of foundation reinforcement technology, and in particular to a device and method for reinforcing soft soil foundations. Background Technology

[0002] Soft soil foundation refers to a poor foundation type composed of silt, silty soil, fill, miscellaneous fill, or other soil layers with high compressibility. Due to the characteristics of soft soil foundation such as high water content, high compressibility, and low bearing capacity, engineering construction (especially road engineering) on ​​soft soil foundation is prone to settlement, deformation, and even collapse, which seriously weakens the stability and durability of the project. Therefore, foundation reinforcement is a key link to ensure the quality of the project.

[0003] Currently, existing technologies for reinforcing soft soil foundations typically employ methods such as vacuum preloading, vibro-compaction, and pile foundation reinforcement. However, these methods only involve excavating drainage ditches on both sides of the road, which can only guide surface water outwards. When rainwater or road surface water seeps into the roadbed, it cannot be drained in time, creating a water pocket effect inside the roadbed, reducing the effective stress of the soil, and inducing local collapse or overall instability.

[0004] Therefore, there is an urgent need for a soft soil foundation reinforcement device and method that can effectively drain water that has seeped into the foundation, avoid the formation of a water pocket effect inside the roadbed, reduce the effective stress of the soil, and induce local collapse or overall instability. Summary of the Invention

[0005] The purpose of this invention is to provide a soft soil foundation reinforcement device and method to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: a soft soil foundation reinforcement treatment device, comprising side plates symmetrically arranged in a soft soil layer, two side plates being fixedly connected on opposite sides by multiple connecting rods, a drainage component for draining water from the soft soil layer between the two side plates being provided inside the side plates, a diversion component being provided on the top surface of the two side plates, a leveling part being provided at the end of the diversion component away from the side plate, and multiple reinforcement components for collecting water from the soft soil layer and supporting the diversion component being provided below the diversion component, the reinforcement component being disposed in the soft soil layer between the two side plates, and a backfill layer being filled between the reinforcement component and the diversion component, the backfill layer being filled between the two side plates.

[0007] Preferably, the drainage assembly includes a first cavity formed within the side plate, the first cavity being connected to a plurality of first through holes, the first through holes on the two side plates being formed on opposite sides of the two side plates.

[0008] Preferably, a first reverse filter bag is disposed inside the first through hole.

[0009] Preferably, a groove is provided on one end of the side plate facing the drainage component, and the groove is provided above the first cavity.

[0010] Preferably, the bottom of the first cavity is inclined, and the lower end of the bottom of the first cavity is connected to a pre-embedded pipe. The end of the pre-embedded pipe away from the first cavity is located in the top surface of the side plate on one side of the groove.

[0011] Preferably, the drainage component includes symmetrically arranged top plates, the top plates are inclined, the higher ends of the two top plates are fixedly connected, the opposite ends of the top plates are at the lower end, and a positioning block is fixedly connected to the bottom of the lower end of the top plate. The positioning block is adapted to the groove and is detachably connected.

[0012] Preferably, the top surface of the top plate is provided with multiple drainage grooves.

[0013] Preferably, the leveling section includes a permeable layer laid on the top surface of the top slab, and a surface layer is laid on one end of the permeable layer away from the top slab.

[0014] Preferably, the reinforcing component includes a cylindrical body, the cylindrical body having a second cavity, the second cavity being connected to a plurality of second through holes, the plurality of second through holes being equally spaced on the outer wall of the cylindrical body; the top surface of the cylindrical body is lower than the top surface of the side plate.

[0015] A method for reinforcing soft soil foundations includes the following steps: S1. Level the site and install protective devices in the construction area; S2. Insert the two side plates symmetrically into the soft soil layer at predetermined positions; S3. Use a compactor to compact the soft soil layer between the two side plates; S4. During the compaction process, the water seeping into the soft soil layer is discharged through the drainage assembly connected by a sludge pump; S5. After the soft soil layer between the two side plates is compacted, a hole is drilled according to the predetermined position, and then the reinforcement component is installed into the hole, and the soft soil layer around the reinforcement component is compacted a second time. S6. During the secondary compaction, the water that seeps out again from the soft soil layer is discharged by connecting the reinforcement component through a sludge pump. S7. After the compaction and moisture content of the soft soil layer meet the requirements, the sludge pump is removed, and mortar is poured into the interior of the drainage component and the reinforcement component. After the mortar curing time is up, the backfill layer is laid between the two side plates. S8. After the backfill layer is laid, the drainage component is installed between the two side plates; S9. Lay the leveling section on the top surface of the drainage component.

[0016] The present invention discloses the following technical effects: This invention, through the diversion components installed on the two side plates, enables water above the diversion components to be effectively discharged to the opposite side of the two side plates. This not only effectively prevents water above the diversion components from seeping into the soft soil layer between the two side plates, but also effectively prevents the formation of a water pocket effect inside the roadbed, reducing the effective stress of the soil and inducing local collapse or overall instability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention installed in a soft layer; Figure 2 This is a schematic diagram of the side plate structure of the present invention; Figure 3 This is a schematic cross-sectional view of the side plate structure of the present invention; Figure 4 This is a schematic diagram of the top plate structure of the present invention; Figure 5 This is a schematic diagram of the top plate structure of the present invention from below; Figure 6 This is a schematic diagram of the reinforcement component structure of the present invention; Among them, 1. Side plate; 2. Top plate; 3. Reinforcing component; 4. Backfill layer; 5. Permeable layer; 6. Surface layer; 7. Soft soil layer; 11. First cavity; 12. First through hole; 13. Groove; 14. Embedded pipe; 21. Drainage trough; 22. Positioning block; 31. Cylinder; 32. Second through hole; 33. Second cavity. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 6 This invention provides a soft soil foundation reinforcement device, including side plates 1 symmetrically arranged in a soft soil layer 7. The two side plates 1 are fixedly connected on opposite sides by multiple connecting rods. A drainage component is provided in the side plate 1 for draining water from the soft soil layer 7 between the two side plates 1. A diversion component is provided on the top surface of the two side plates 1. A leveling part is provided at the end of the diversion component away from the side plate 1. A plurality of reinforcement components 3 are provided below the diversion component for collecting water in the soft soil layer 7 and supporting the diversion component. The reinforcement components 3 are arranged in the soft soil layer 7 between the two side plates 1. A backfill layer 4 is filled between the reinforcement components 3 and the diversion components. The backfill layer 4 is filled between the two side plates 1.

[0022] The present invention uses a diversion component installed on two side plates 1 to effectively drain water above the diversion component to the opposite side of the two side plates 1. This not only effectively prevents water above the diversion component from seeping into the soft soil layer 7 between the two side plates 1, but also effectively prevents the formation of a water pocket effect inside the roadbed, reducing the effective stress of the soil and inducing local collapse or overall instability.

[0023] A further optimized design includes a drainage component comprising a first cavity 11 formed within a side plate 1, the first cavity 11 being connected to a plurality of first through holes 12, the first through holes 12 being formed on opposite sides of the two side plates 1. Water in the soft soil layer 7 can effectively enter the first cavity 11 through the first through holes 12.

[0024] To further optimize the design, a first reverse filter bag is installed inside the first through hole 12. This first reverse filter bag allows water from the soft soil layer 7 to effectively enter the first cavity 11.

[0025] In a further optimized design, a groove 13 is provided on the end of the side plate 1 facing the drainage component, and the groove 13 is located above the first cavity 11. This facilitates defining the installation position of the drainage component.

[0026] In a further optimized design, the bottom of the first cavity 11 is inclined, and a pre-embedded pipe 14 is connected to the lower end of the bottom of the first cavity 11. The end of the pre-embedded pipe 14 away from the first cavity 11 is located in the top surface of the side plate 1 on one side of the groove 13. By connecting the pre-embedded pipe 14 to the lower end of the bottom of the first cavity 11, water can flow effectively to the pre-embedded pipe 14, facilitating the extraction of water from the first cavity 11.

[0027] Further optimization of the scheme: the diversion component includes symmetrically arranged top plates 2, the top plates 2 are inclined, the higher ends of the two top plates 2 are fixedly connected, the opposite ends of the top plates 2 are at the lower end, and the bottom of the lower end of the top plate 2 is fixedly connected to a positioning block 22, the positioning block 22 is adapted to the groove 13 and can be detachably connected.

[0028] By tilting the top plate 2, water can flow effectively down the top surface of the top plate 2.

[0029] To further optimize the design, multiple drainage channels 21 are provided on the top surface of the roof slab 2. These channels divert water, effectively reducing the amount of water seeping into the roof slab 2. Simultaneously, waterproofing material is laid on both the top and bottom surfaces of the roof slab 2, effectively preventing water leakage.

[0030] The scheme was further optimized. The leveling section includes a permeable layer 5 laid on the top surface of the top slab 2. A surface layer 6 is laid on the end of the permeable layer 5 away from the top slab 2. The permeable layer 5 of the filter bag adopts a filter layer, which is a layered structure composed of sand, gravel or pebbles of different particle sizes. The particle size increases gradually along the seepage direction to prevent the loss of fine particles and ensure smooth drainage.

[0031] During construction, 1-3 layers of non-cohesive soil are laid orthogonally, with the number of layers determined according to project requirements; the filter layer must meet the particle size distribution requirements, that is, the particles of adjacent layers must not penetrate each other, and the permeability must be good, and the material must be clean and free of rotten substances.

[0032] The filter layer is laid in layers using a flat vibratory compactor, and rolling and tamping are prohibited. The thickness of each layer is controlled at 15-30cm. During construction, the slope must be kept stable and the material gradation must be checked. The drainage function of the filter soil is used to prevent piping and soil flow, and to ensure stable seepage.

[0033] Further optimization of the scheme: the reinforcement component 3 includes a cylinder 31, a second cavity 33 is provided inside the cylinder 31, the second cavity 33 is connected to a plurality of second through holes 32, the plurality of second through holes 32 are equally spaced on the outer wall of the cylinder 31; the top surface of the cylinder 31 is lower than the top surface of the side plate 1.

[0034] When the cylinder 31 extends into the soft soil layer 7, the water in the soft soil layer 7 flows into the second cavity 33 through the second through hole 32.

[0035] A second filter bag is installed inside the second through hole 32, which allows water in the soft soil layer 7 to effectively enter the second cavity 33.

[0036] A method for reinforcing soft soil foundations includes the following steps: S1. First, level the site, remove surface debris, and measure and position the installation line of the side panels; then install protective devices in the construction area, such as barriers and warning signs, to ensure work safety.

[0037] S2. Insert the two side plates 1 symmetrically into the soft soil layer 7 at the predetermined positions; press the two side plates 1 symmetrically into the soft soil layer 7 at the designed spacing to ensure the verticality of the side plates; and fix the two side plates with connecting rods to prevent lateral displacement during compaction.

[0038] S3. Use a compactor to compact the soft soil layer 7 between the two side plates 1; use a heavy compactor to compact the soft soil layer 7 between the two side plates 1 in layers (each layer thickness ≤ 30cm).

[0039] S4. During the compaction process, the water seeping out of the soft soil layer 7 is discharged through the sludge pump connected to the drainage assembly; that is, the water in the soft soil layer 7 flows into the first cavity 11 through the first through hole 12, and the first filter bag can effectively prevent soil particles from clogging the first through hole 12.

[0040] The sludge pump has a water inlet connected to a pumping pipe. By extending the pumping pipe into the pre-buried pipe 14 and extending the end of the pumping pipe away from the sewage pump into the first cavity 11, water in the first cavity 11 can be pumped out.

[0041] S5. After the soft soil layer 7 between the two side plates 1 is compacted, hole drilling is carried out according to the predetermined position, and then the reinforcing component 3 is installed into the hole. The soft soil layer 7 around the reinforcing component 3 is compacted a second time. Holes are drilled in the compacted soft soil layer 7 at the designed spacing, and the cylinder 31 is installed into the hole. The soft soil layer around each cylinder 31 is compacted a second time.

[0042] S6. During the secondary compaction, the water that seeps out again from the soft soil layer 7 is discharged through the sludge pump connected to the reinforcement component 3; during the compaction process, the water in the second cavity 33 can be extracted by extending the end of the water pump away from the sewage pump into the bottom of the second cavity 33.

[0043] S7. When the compaction and moisture content of the soft soil layer 7 meet the requirements, stop pumping, remove the sludge pump, and pour mortar into the interior of the drainage component and the reinforcement component 3. After the mortar curing time is up, the side plate 1 and the cylinder 31 will form a permanent support structure.

[0044] A backfill layer 4 is laid between the two side panels 1; the backfill layer 4 is made of concrete and the backfill layer 4 is poured with the top surface of the side panel 1.

[0045] S8. After the backfill layer 4 is laid, the drainage component is installed between the two side plates 1; by embedding the positioning block 22 of the top plate 2 into the groove 13 of the side plate 1, the inclination of the top plate 2 is ensured. Then, a hole is drilled at the higher end of the top plate 2. The hole is set between the adjacent drainage grooves 21 of the same top plate 2. Mortar is poured into the hole to fill the gap between the top plate 2 and the backfill layer 4.

[0046] S9. Lay a leveling layer on the top surface of the drainage component. Lay the permeable layer 5 and the surface layer 6 in sequence to complete the leveling work. After water permeates the surface layer 6 and the permeable layer 5, it is guided to flow out to both sides through the drainage channel 21, effectively preventing water from seeping into the roadbed.

[0047] The present invention forms a vertical drainage network by means of drainage components and reinforcement components on side plate 1, which effectively eliminates the water sac effect.

[0048] The present invention, through the combination of the inclined top plate 2 and the permeable layer 5, can effectively achieve rapid drainage of surface water and reduce the risk of infiltration.

[0049] The present invention first uses the first cavity 11 and the second cavity 33 to compact the soft soil layer 7, which can effectively collect water in the soft soil layer 7 and make the moisture content of the soft soil layer 7 meet the requirements; after the soft soil layer 7 is compacted, mortar is poured into the first cavity 11 and the second cavity 33, which can also effectively form a permanent support structure for the side plate 1 and the cylinder 31.

[0050] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A soft soil foundation reinforcement device, characterized in that: The system includes side plates (1) symmetrically arranged in the soft soil layer (7). The two side plates (1) are fixedly connected on opposite sides by multiple connecting rods. A drainage component is provided in the side plate (1) for draining water from the soft soil layer (7) between the two side plates (1). A diversion component is provided on the top surface of the two side plates (1). A leveling part is provided at the end of the diversion component away from the side plate (1). Multiple reinforcement components (3) for collecting water in the soft soil layer (7) and supporting the diversion component are provided below the diversion component. The reinforcement component (3) is arranged in the soft soil layer (7) between the two side plates (1). A backfill layer (4) is filled between the reinforcement component (3) and the diversion component. The backfill layer (4) is filled between the two side plates (1).

2. The soft soil foundation reinforcement device according to claim 1, characterized in that: The drainage assembly includes a first cavity (11) formed in the side plate (1), the first cavity (11) being connected to a plurality of first through holes (12), the first through holes (12) on the two side plates (1) being formed on opposite sides of the two side plates (1).

3. The soft soil foundation reinforcement device according to claim 2, characterized in that: A first reverse filter bag is provided inside the first through hole (12).

4. The soft soil foundation reinforcement device according to claim 2, characterized in that: The side plate (1) has a groove (13) on one end facing the drainage component, and the groove (13) is located above the first cavity (11).

5. The soft soil foundation reinforcement device according to claim 4, characterized in that: The bottom of the first cavity (11) is inclined, and the lower end of the bottom of the first cavity (11) is connected to a pre-embedded pipe (14). The end of the pre-embedded pipe (14) away from the first cavity (11) is located in the top surface of the side plate (1) on one side of the groove (13).

6. The soft soil foundation reinforcement device according to claim 4, characterized in that: The drainage component includes symmetrically arranged top plates (2), which are inclined. The two top plates (2) are fixedly connected at their higher ends, and the ends of the top plates (2) that are opposite to each other are at the lower end. A positioning block (22) is fixedly connected to the bottom of the lower end of the top plate (2). The positioning block (22) is adapted to the groove (13) and is detachably connected.

7. The soft soil foundation reinforcement device according to claim 6, characterized in that: The top surface of the top plate (2) is provided with multiple drainage grooves (21).

8. The soft soil foundation reinforcement device according to claim 6, characterized in that: The leveling section includes a permeable layer (5) laid on the top surface of the top plate (2), and a surface layer (6) is laid on one end of the permeable layer (5) away from the top plate (2).

9. The soft soil foundation reinforcement device according to claim 1, characterized in that: The reinforcement component (3) includes a cylindrical body (31), and a second cavity (33) is provided inside the cylindrical body (31). The second cavity (33) is connected to a plurality of second through holes (32), and the plurality of second through holes (32) are equally spaced on the outer wall of the cylindrical body (31). The top surface of the cylinder (31) is lower than the top surface of the side plate (1).

10. A method for reinforcing soft soil foundations, based on the soft soil foundation reinforcement device according to any one of claims 1-9, characterized in that: Includes the following steps: S1. Level the site and install protective devices in the construction area; S2. Insert the two side plates (1) symmetrically into the soft soil layer (7) at predetermined positions; S3. Use a compactor to compact the soft soil layer (7) between the two side plates (1); S4. During the compaction process, the water seeping out of the soft soil layer (7) is discharged by connecting the drainage assembly through a sludge pump; S5. After the soft soil layer (7) between the two side plates (1) is compacted, hole drilling is carried out according to the predetermined position, and then the reinforcement component (3) is installed into the hole, and the soft soil layer (7) around the reinforcement component (3) is compacted a second time. S6. During the second compaction, the water that seeps out again from the soft soil layer (7) is discharged by connecting the reinforcement component (3) through the sludge pump; S7. When the compaction degree and moisture content of the soft soil layer (7) meet the requirements, the sludge pump is removed and mortar is poured into the interior of the drainage component and the reinforcement component (3). After the mortar curing time is up, the backfill layer (4) is laid between the two side plates (1). S8. After the backfill layer (4) is laid, the drainage component is installed between the two side plates (1); S9. Lay the leveling section on the top surface of the drainage component.

Images