Soft soil foundation reinforcing device
By installing spiral blades on steel pipe piles, breaking up the surrounding soil and injecting concrete, forming a concrete reinforcement layer with a larger volume and stronger support force, the problem of concrete being difficult to flow out to the outside in the prior art is solved, and the softness is significantly improved Reinforcement effect of the foundation.
Patent Information
- Application Number
- CN202421297983.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the existing soft soil foundation reinforcement technology, the concrete inside the reinforced pile is difficult to flow out to the outside, and a complete concrete reinforcement layer cannot be formed around the reinforced pile, resulting in a lower actual pressure bearing effect and poor reinforcement effect.
The spiral blades are fixed to the surface of the steel pipe pile. The spiral blades disperse the surrounding soil during the pile driving process. The concrete penetrates into the soil through the slurry holes to form a solid concrete reinforcement layer, and further supports structures such as crossbars and micro piles. Improve the support strength of the foundation.
Through the design of spiral blades, the penetration range of concrete is expanded, forming a concrete reinforcement layer with a larger volume and stronger support force, and improving the overall bearing capacity and reinforcement effect of the foundation.
Smart Images
Figure CN222500207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of soft soil foundation, in particular to a soft soil foundation reinforcement device. Background Art
[0002] Soft soil foundation is mainly composed of soft soil with high content of fine particles such as clay and silt, organic soil with large pores, peat and loose sand. The groundwater level is high, the fill and structure above it are poorly stable and the foundation is subsiding. The soft foundation is very inconvenient for construction and transportation.
[0003] Among them, announcement number CN220550532 discloses a soft soil foundation reinforcement structure, which relates to the field of construction engineering, including a first steel plate and a second steel plate arranged in sequence from bottom to top, the first steel plate and the second steel plate are hollowed out, a first filling area is arranged between the first steel plate and the second steel plate, a second filling area is arranged on the upper end surface of the second steel plate, a plurality of vertical reinforcement piles are arranged on the first steel plate, the reinforcement piles are inserted into the ground and used to reinforce the ground, and a reinforcement mechanism for increasing the stability of the ground is arranged on the reinforcement piles. The application has the effect of facilitating the improvement of the stability of soft soil.
[0004] This structure is reinforced by inserting multiple groups of reinforcing piles into the foundation and pouring concrete. However, during the implementation process, the reinforcing piles will squeeze the surrounding soil after being inserted into the foundation, making the surrounding soil density increase, resulting in the concrete inside the reinforcing piles being difficult to flow out to the outside, and unable to form a complete concrete reinforcement layer around the reinforcing piles, resulting in low actual pressure bearing effect and poor reinforcement effect.
[0005] Therefore, it is necessary to invent a soft soil foundation reinforcement device to solve the above problems. Utility Model Content
[0006] The utility model aims to provide a soft soil foundation reinforcement device to solve the problem that the concrete inside the reinforcement pile is difficult to flow outward and a complete concrete reinforcement layer cannot be formed around the reinforcement pile, resulting in low actual pressure bearing effect and poor reinforcement effect.
[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a soft soil foundation reinforcement device, comprising a steel pipe pile, a spiral blade is fixedly connected to the surface of the steel pipe pile, a slurry outlet hole is opened on the side of the steel pipe pile, and a reinforcement module is arranged on the upper side of the steel pipe pile, the reinforcement module comprises a support plate, a fixing plate, a support cross bar, a first micro pile, a second micro pile and a support steel plate, the support plate is fixedly connected to the upper end of the steel pipe pile, the support cross bar is arranged between two adjacent groups of steel pipe piles, the first micro pile is arranged in the middle position of the support cross bar, and the second micro pile is arranged between two groups of first micro piles.
[0008] By adopting the above technical solution, the steel pipe pile is spirally inserted into the soil. During the piling process, the spiral blades will break up the surrounding soil, and then concrete is injected into the steel pipe pile. At this time, the concrete penetrates into the surrounding soil through the slurry holes, forming a solid concrete reinforcement layer around the steel pipe pile. At the same time, the soil and concrete reinforcement layer support the spiral blades to prevent the steel pipe pile from sinking again during subsequent use. Then, the steel pipe piles are fixed together by multiple groups of supporting cross bars to form a whole. The first micro pile is used to support the middle part of the supporting cross bar to further improve the supporting strength of the foundation.
[0009] Optionally, the fixing plate is fixed to the upper surface of the supporting plate, and grouting holes are opened at the centers of the steel pipe piles, the fixing plate and the supporting plate, and the grouting holes are connected to the grouting holes.
[0010] By adopting the above technical solution, concrete is poured into the grouting hole, and then the concrete flows out from the grouting hole into the soil.
[0011] Optionally, four groups of clamping grooves are provided on the surface of the fixing plate, and two ends of the supporting cross bar are respectively clamped in the clamping grooves on both sides.
[0012] By adopting the above technical solution, the clamping groove limits the position of the supporting cross bar.
[0013] Optionally, two groups of fixing blocks are fixedly connected to the interior of the support plate at a position below the clamping groove, and threaded holes are provided inside the fixing blocks.
[0014] Optionally, the internal thread of the threaded hole is connected with a fixing screw.
[0015] Optionally, both ends of the supporting cross bar are provided with connecting holes, and the fixing screws are inserted into the connecting holes.
[0016] By adopting the above technical solution, the fixing screw is passed through the connecting hole and then threadedly connected with the threaded hole, so that the supporting cross bar and the steel pipe pile are locked and fixed.
[0017] Optionally, a plug-in slot is provided at the upper end of the first micropile, and the lower end of the supporting cross bar is clamped inside the plug-in slot.
[0018] By adopting the above technical solution, the support rod is pre-buried between two groups of steel pipe piles to support the support rod.
[0019] Optionally, a crushed stone cushion layer is filled between the supporting cross bars, the supporting steel plate is laid on the upper surface of the supporting cross bars, and the upper end of the second micropile abuts against the middle of the supporting steel plate.
[0020] By adopting the above technical solution, the gravel cushion layer and the second micro pile support the middle position of the supporting steel plate, thereby preventing the middle part of the supporting steel plate from being sunken.
[0021] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0022] The utility model utilizes spiral blades to break up the soil around the steel pipe piles, thereby increasing the penetration range of concrete and improving the volume and supporting strength of the concrete reinforcement layer. At the same time, the concrete reinforcement layer and the soil are used to support the spiral blades to avoid secondary sinking of the steel pipe piles. The steel pipe piles are further connected by multiple groups of supporting cross bars to form a whole of the multiple groups of steel pipe piles, thereby further improving the foundation strength and the bearing capacity. This solves the problem that the concrete inside the reinforced piles is difficult to flow out to the outside and a complete concrete reinforcement layer cannot be formed around the reinforced piles, resulting in low actual pressure bearing effect and poor reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0024] Figure 2 This is a schematic diagram of the reinforcement module structure of the utility model;
[0025] Figure 3 This is a schematic diagram of the first micro pile structure of the utility model;
[0026] Figure 4 This is a schematic diagram of the supporting crossbar structure of the utility model;
[0027] Figure 5 This is a schematic diagram of the steel pipe pile structure of the utility model.
[0028] Description of reference numerals:
[0029] 1. Steel pipe pile; 11. Spiral blade; 12. Slurry outlet hole; 13. Support plate; 14. Fixing plate; 15. Snap-in groove; 16. Threaded hole; 17. Fixing screw; 18. Fixing block; 19. Grouting hole; 2. Support cross bar; 21. Connection hole; 22. First micro pile; 23. Plug-in groove; 24. Second micro pile; 25. Support steel plate. DETAILED DESCRIPTION
[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0031] The utility model provides Figures 1 to 3A soft soil foundation reinforcement device shown in the figure comprises a steel pipe pile 1, a spiral blade 11 is fixedly connected to the surface of the steel pipe pile 1, a slurry outlet hole 12 is opened on the side of the steel pipe pile 1, a reinforcement module is arranged on the upper side of the steel pipe pile 1, the reinforcement module comprises a support plate 13, a fixing plate 14, a support cross bar 2, a first micro pile 22, a second micro pile 24 and a support steel plate 25, the support plate 13 is fixedly connected to the upper end of the steel pipe pile 1, the support cross bar 2 is arranged between two adjacent groups of steel pipe piles 1, the first micro pile 22 is arranged in the middle position of the support cross bar 2, the second micro pile 24 is arranged between the two groups of first micro piles 22, an insertion groove 23 is opened at the upper end of the first micro pile 22, the lower end of the support cross bar 2 is clamped in the inside of the insertion groove 23, a crushed stone cushion layer is filled between the support cross bars 2, the support steel plate 25 is laid on the upper surface of the support cross bar 2, and the upper end of the second micro pile 24 abuts against the middle of the support steel plate 25.
[0032] Among them, during the construction process, the steel pipe pile 1 is spirally driven into the soil. At this time, the spiral blade 11 will loosen the surrounding soil, and then concrete is injected into the steel pipe pile 1. The concrete is discharged into the surrounding soil gaps through the slurry outlet 12, thereby increasing the volume and supporting strength of the concrete reinforcement layer. Then, the first micro pile 22 is pre-buried between the two groups of steel pipe piles 1, and then the second micro pile 24 is pre-buried at the center of the four groups of steel pipe piles 1. Next, the support cross bar 2 is fixed between the two groups of steel pipe piles 1, so that the multiple groups of steel pipe piles 1 form a whole, and then a crushed stone cushion layer is laid between the support cross bars 2, and finally the support steel plate 25 is laid on the upper side of the support cross bar 2.
[0033] See also Figure 4 and Figure 5 The fixing plate 14 is fixed on the upper surface of the supporting plate 13. Grouting holes 19 are provided at the centers of the steel pipe pile 1, the fixing plate 14 and the supporting plate 13. The grouting holes 19 are connected with the grouting holes 12. Four groups of clamping grooves 15 are provided on the surface of the fixing plate 14. The two ends of the supporting cross bar 2 are respectively clamped in the clamping grooves 15 on both sides. Two groups of fixing blocks 18 are fixedly connected to the lower side of the clamping grooves 15 inside the supporting plate 13. Threaded holes 16 are provided inside the fixing blocks 18. Fixing screws 17 are threadedly connected to the inside of the threaded holes 16. Connecting holes 21 are provided at both ends of the supporting cross bar 2. The fixing screws 17 are inserted into the connecting holes 21.
[0034] Specifically, concrete is injected into the steel pipe pile 1 through the grouting hole 19. Under pressure, the concrete will flow out through the grouting hole 12 to the outside and solidify around the steel pipe pile 1 to form a concrete foundation. Moreover, since the soil around the steel pipe pile 1 is in a loose state, the concrete can penetrate farther, and the formed concrete foundation has a larger volume, and has stronger supporting and reinforcement capabilities.
[0035] In addition, when installing the supporting cross bar 2, the two ends of the supporting cross bar 2 are inserted into the clamping groove 15 at the upper end of the steel pipe pile 1, and the fixing screw 17 is inserted into the interior of the connecting hole 21, and the lower end is threadedly connected to the threaded hole 16, the supporting cross bar 2 and the steel pipe pile 1 are locked and fixed, and multiple groups of steel pipe piles 1 are connected into a whole, thereby further improving the ability to reinforce the soft soil foundation.
[0036] Working principle of the utility model: in order to improve the reinforcement ability of soft soil foundation, the steel pipe pile 1 is spirally driven into the soil, and the spiral blade 11 will loosen the surrounding soil. Then concrete is injected into the steel pipe pile 1 through the grouting hole 19. Under pressure, the concrete will flow outward through the grouting hole 12 and solidify around the steel pipe pile 1 to form a concrete foundation. Then, multiple groups of steel pipe piles 1 are connected into a whole through the supporting cross bar 2, so as to further improve the reinforcement ability of the soft soil foundation.
[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A soft soil foundation reinforcement device, comprising a steel pipe pile (1), characterized in that: The surface of the steel pipe pile (1) is fixedly connected with a spiral blade (11), the side of the steel pipe pile (1) is provided with a slurry outlet hole (12), and the upper side of the steel pipe pile (1) is provided with a reinforcement module, the reinforcement module comprising a support plate (13), a fixing plate (14), a support cross bar (2), a first micro pile (22), a second micro pile (24) and a support steel plate (25), the support plate (13) is fixedly connected to the upper end of the steel pipe pile (1), the support cross bar (2) is arranged between two adjacent groups of steel pipe piles (1), the first micro pile (22) is arranged in the middle of the support cross bar (2), and the second micro pile (24) is arranged between two groups of first micro piles (22).
2. A soft soil foundation reinforcement device according to claim 1, characterized in that: The fixing plate (14) is fixed to the upper surface of the supporting plate (13); grouting holes (19) are provided at the centers of the steel pipe pile (1), the fixing plate (14) and the supporting plate (13); the grouting holes (19) are connected to the grouting holes (12).
3. The soft soil foundation reinforcement device according to claim 1, characterized in that: Four groups of clamping grooves (15) are provided on the surface of the fixing plate (14), and the two ends of the supporting cross bar (2) are respectively clamped in the clamping grooves (15) on both sides.
4. A soft soil foundation reinforcement device according to claim 3, characterized in that: Two groups of fixing blocks (18) are fixedly connected to the interior of the support plate (13) at a position below the clamping groove (15), and threaded holes (16) are provided inside the fixing blocks (18).
5. A soft soil foundation reinforcement device according to claim 4, characterized in that: The internal thread of the threaded hole (16) is connected with a fixing screw (17).
6. A soft soil foundation reinforcement device according to claim 5, characterized in that: Both ends of the support crossbar (2) are provided with connection holes (21), and the fixing screws (17) are inserted into the connection holes (21).
7. The soft soil foundation reinforcement device according to claim 1, characterized in that: The upper end of the first micro pile (22) is provided with an inserting groove (23), and the lower end of the supporting cross bar (2) is clamped inside the inserting groove (23).
8. The soft soil foundation reinforcement device according to claim 1, characterized in that: A crushed stone cushion layer is filled between the support cross bars (2), the support steel plate (25) is laid on the upper surface of the support cross bar (2), and the upper end of the second micropile (24) abuts against the middle of the support steel plate (25).