Auxiliary highway subgrade soft soil layer reinforcing device
By combining CFG piles, lightweight filler layers, geotextile layers, and metal grids, the problems of high construction difficulty, high cost, and limited effectiveness in the reinforcement of weak soil layers have been solved, thereby improving the stability and bearing capacity of the roadbed.
Patent Information
- Application Number
- CN202423157254.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing technologies for reinforcing weak soil layers suffer from problems such as high construction difficulty, high cost, and limited effectiveness. In particular, traditional filling materials lead to uneven settlement, loose pile foundation connections, and long cycles for drainage consolidation methods.
The roadbed adopts a combined structure consisting of CFG piles, lightweight filler layer, geotextile layer, backfill layer, reinforcement blocks, reinforcing bars, metal grid and concrete layer. The CFG piles provide positioning and reinforcement, the lightweight filler layer reduces pressure, the geotextile layer prevents fine particles from entering, and the metal grid provides tensile strength, thereby enhancing the stability and bearing capacity of the roadbed.
It effectively solved the problem of reinforcing weak soil layers, reduced settlement, improved the overall stability and bearing capacity of the roadbed, and reduced construction difficulty and cost.
Smart Images
Figure CN223688721U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of building, especially relates to a kind of auxiliary highway subgrade soft soil layer reinforcing device. BACKGROUND
[0002] Soft soil layer reinforcing device refers to various engineering technical measures for the purpose of enhancing foundation bearing capacity, reducing settlement, improving slope stability, etc.In the construction in soft soil layer, due to loose soil, large compressibility or low strength, etc., specific method is usually used to reinforce foundation to ensure the safety and stability of building.
[0003] The current soft soil layer reinforcing method has the following problems:
[0004] 1, traditional filling material: when using ordinary filler (such as sand, clay) for filling, due to the low bearing capacity of soft soil layer, uneven settlement easily occurs, leading to pavement cracking and deformation.
[0005] 2, pile foundation reinforcement: although pile foundation can improve the bearing capacity of subgrade, it is difficult to construct in soft soil layer, with high cost, and the connection between piles is not tight enough, which may cause local settlement.
[0006] 3, drainage consolidation method: the strength of soft soil is improved by preloading and drainage consolidation, but this method needs a long time, with long construction period and limited effect.
[0007] 4, geotextile reinforcement: although geotextile can prevent filler loss to some extent and enhance the integrity of subgrade, its reinforcing effect on soft soil layer is limited, especially in deep reinforcement.
[0008] Therefore, it is urgent to develop an auxiliary highway subgrade soft soil layer reinforcing device to solve the above technical problems. UTILITY MODEL CONTENT
[0009] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides an auxiliary highway subgrade soft soil layer reinforcing device combining various materials and technologies.
[0010] Technical scheme: an auxiliary highway subgrade soft soil layer reinforcing device, comprising soft soil layer, CFG pile, light filler layer, geotextile layer, backfill layer, reinforcing block, reinforcing bar, metal grid, concrete layer and steel bar, the light filler layer, geotextile layer and backfill layer are installed on the upper side of soft soil layer from bottom to top, the reinforcing block is fixedly installed above the backfill layer, the reinforcing bar is fixedly connected to the left and right sides of the top of reinforcing block, the metal grid is fixedly connected to the top of reinforcing block, the reinforcing bar limits the four corners of metal grid, and the concrete layer is poured on the top of reinforcing block.
[0011] In a preferred embodiment of the present application, a reinforcing plate is arranged between the two adjacent CFG piles.
[0012] In a preferred embodiment of the present application, a strip-shaped hole is arranged on the reinforcing plate in a uniform and spaced manner from front to back.
[0013] In a preferred embodiment of the present application, a reinforcing bar is arranged between the front and back walls of the reinforcing rib, and the reinforcing bar penetrates through the front and back walls of the concrete layer after the concrete layer is poured.
[0014] In a preferred embodiment of the present application, the filling thickness of the light filler layer, the geotextile layer and the backfill layer decreases from bottom to top.
[0015] In a preferred embodiment of the present application, the metal grid is composed of a horizontal metal plate and an inclined longitudinal metal plate, and the spacing of the metal plate combination is triangular.
[0016] Compared with the prior art, the present application has the following advantages: 1. The CFG pile can be positioned and reinforced by the reinforcing plate, and the strip-shaped hole on the reinforcing plate will not block the material filling.
[0017] 2. The light filler layer can be used as backfill material by using foam concrete, expanded polystyrene block, etc., to reduce the pressure on the lower soft soil foundation.
[0018] 3. The geotextile layer can prevent fine-grained soil from entering the coarse-grained layer, and can also play a reinforcing role to increase the overall stability of the roadbed.
[0019] 4. The metal grid can provide additional tension to enhance the stability and carrying capacity of the roadbed, especially when laid on soft soil foundation, which can effectively disperse the vehicle load and reduce the pressure on the foundation. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.
[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application after the concrete layer is separated.
[0022] Figure 3 It is a top view of the upper part of the reinforcing block of the present application.
[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the reinforcing plate, reinforcing block and reinforcing rib of the present application.
[0024] 1, soft soil layer, 2, CFG pile, 3, reinforcing plate, 4, light filler layer, 5, geotextile layer, 6, backfill layer, 7, reinforcing block, 8, reinforcing bar, 9, metal grid, 10, concrete layer, 11, steel bar. DETAILED DESCRIPTION
[0025] The technical scheme of the utility model will be further described below with reference to the drawings.
[0026] Embodiment: a kind of auxiliary highway subgrade soft soil layer reinforcing device, as shown in Figures 1-4 It includes soft soil layer 1, CFG pile, reinforcing plate 3, light filler layer 4, geotextile layer 5, backfill layer 6, reinforcing block 7, reinforcing bar 8, metal grid 9, concrete layer 10 and steel bar 11, CFG pile 2 is fixedly connected to the top of soft soil layer 1, reinforcing plate 3 is connected between two adjacent CFG piles 2, reinforcing plate 3 is in the form of rice, and strip-shaped holes are uniformly and spaced apart on reinforcing plate 3, light filler layer 4, geotextile layer 5 and backfill layer 6 are sequentially installed on the upper side of soft soil layer 1 from bottom to top, the filling thickness of light filler layer 4, geotextile layer 5 and backfill layer 6 decreases sequentially from bottom to top, reinforcing block 7 is fixedly installed above backfill layer 6, reinforcing bar 8 is fixedly connected to the top of reinforcing block 7 left and right sides, metal grid 9 is fixedly connected to the top of reinforcing block 7, metal grid 9 is composed of transverse metal plate and inclined longitudinal metal plate, the interval of metal plate combination is triangle, reinforcing bar 8 positions four corners of metal grid 9, steel bar 11 is connected between the front and rear walls in reinforcing bar 8, and concrete layer 10 is poured on the top of reinforcing block 7.
[0027] When paving, according to Figure 1 , CFG pile 2 and reinforcing plate 3 are built, reinforcing plate 3 can position and reinforce CFG pile 2, and strip-shaped holes on reinforcing plate 3 will not block the filling of materials, then light filler layer 4 is first laid, light filler layer 4 can use foam concrete, expanded polystyrene block, etc. as backfill material, to reduce the pressure on the lower soft soil foundation and reduce settlement, after light filler layer 4 is laid, geotextile layer 5 is laid, geotextile layer 5 prevents fine-grained soil from entering coarse-grained layer, and can also play a reinforcing role, to increase the overall stability of subgrade, then backfill soil, sandstone, etc. are laid, backfill layer 6 is laid, then reinforcing block 7 is fixed above backfill layer 6, and then steel bar 11 is fixed in Figure 3The reinforcing rib 8 is positioned and fixed on the top of the reinforcing block 7 through the bolts, the metal grating 9 is placed on the upper side of the reinforcing block 7 after the reinforcing rib 8 is fixed, the reinforcing rib 8 limits the metal grating 9, then the concrete layer 10 is poured and solidified, the steel bars 11 penetrate through the front and back walls of the concrete layer 10 to reinforce the concrete layer 10, the metal grating 9 can provide additional tension and enhance the stability and bearing capacity of the roadbed, especially when the roadbed is laid on the soft soil, the vehicle load can be effectively dispersed and the pressure of the roadbed is reduced.
[0028] The above embodiments are only the preferred embodiments of the present application, and are not used to limit the scope of the present application, so that equivalent changes made according to the content of the present application claims should be included in the scope of the present application claims.
Claims
1. An auxiliary highway subgrade soft soil layer reinforcement device, characterized in that: The structure includes a soft soil layer (1), CFG piles (2), a lightweight filler layer (4), a geotextile layer (5), a backfill layer (6), a reinforcing block (7), reinforcing bars (8), a metal grid (9), a concrete layer (10), and reinforcing bars (11). The soft soil layer (1) is installed with the lightweight filler layer (4), geotextile layer (5), and backfill layer (6) sequentially from bottom to top. The backfill layer (6) is fixedly installed on top of the reinforcing block (7). The top left and right sides of the reinforcing block (7) are fixedly connected with reinforcing bars (8). The top of the reinforcing block (7) is fixedly connected with a metal grid (9). The reinforcing bars (8) limit the four corners of the metal grid (9). The top of the reinforcing block (7) is filled with a concrete layer (10).
2. The device for reinforcing weak soil layer of highway subgrade according to claim 1, characterized in that: It also includes a reinforcing plate (3) installed between two adjacent CFG piles (2), the reinforcing plate (3) being in the shape of a star.
3. The device for reinforcing soft soil layer of highway subgrade according to claim 2, characterized in that: The reinforcing plate (3) has strip-shaped holes evenly spaced from front to back.
4. The device for reinforcing weak soil layer of highway subgrade according to claim 1, characterized in that: It also includes a steel bar (11) installed between the front and rear walls of the reinforcing bar (8). After the concrete layer (10) is poured, the steel bar (11) penetrates the front and rear walls of the concrete layer (10).
5. The device for reinforcing weak soil layers of highway subgrades according to claim 1, characterized in that: The filling thickness of the lightweight filler layer (4), geotextile layer (5) and backfill layer (6) decreases sequentially from bottom to top.
6. The device for reinforcing weak soil layers of highway subgrades according to claim 1, characterized in that: The metal grid (9) is composed of horizontal metal plates and inclined vertical metal plates, and the spacing of the metal plates is triangular.