A prefabricated row of piles

Abstract

The utility model relates to a prefabricated row pile belongs to the field of building, this prefabricated row pile is by upper structure and lower structure of upper and lower splicing constitutes, the upper structure is by a plurality of upper board transverse splicing constitutes, the lower structure is by a plurality of lower board transverse splicing constitutes, the upper board is through the corresponding first protrusion and first recess joint between, the first protrusion is along the axial in and set up the perfusion hole, the lateral wall of perfusion hole is set up the through -hole at different elevation, is used for perfusion anti -seepage liquid realizes the anti -seepage, the lateral wall of upper board is set up the corrugated recess and forms the bionic microtexture, the upper board and the lower board are staggered joint between. The utility model has the characteristics of satisfying the operation requirement of narrow river and the space restraint, the installation efficiency is higher, and the anti -seepage effect is better.

Description

Technical Field

[0001] This utility model relates to the field of building technology, and in particular to a precast pile foundation. Background Technology

[0002] In water conservancy management, bank protection reinforcement, and ecological restoration projects in narrow river channels, traditional retaining structures often face challenges such as limited construction space, tight schedules, and stringent environmental protection requirements. While cast-in-place concrete piles have long possessed good structural continuity and seepage prevention potential, their construction process has significant drawbacks: they require on-site formwork, pouring, and long-term curing; large equipment is difficult to deploy in narrow sites; and they are easily affected by hydrological conditions, leading to extended construction periods, large quality fluctuations, and defects such as segregation and cold joints more likely to occur during underwater pouring, seriously affecting the structural integrity and seepage prevention performance.

[0003] On the other hand, while traditional precast concrete piles can partially overcome the time-sensitive defects of cast-in-place processes, they still have significant shortcomings in applications in narrow river channels:

[0004] 1. High installation resistance: Traditional precast piles mostly use hammer driving or vibratory pile driving technology. The sinking resistance is high in dense soil layers or gravelly riverbeds, which can easily lead to pile displacement and damage. In addition, the strong construction vibration poses a risk of damage to nearby old revetments and sensitive ecological areas.

[0005] 2. Weak seepage prevention: The pile wall formed after the individual piles are driven independently relies only on backfill or simple caulking between the piles. The joints are prone to seepage channels, which cannot meet the strict seepage prevention requirements of the river water-retaining structure. Utility Model Content

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a precast pile and its construction method, which solves the problem that the current use of cast-in-place concrete retaining walls and traditional sheet piles cannot use large machinery due to limited space, thus affecting construction efficiency and quality.

[0007] To achieve the above and other related objectives, this utility model provides a precast pile, characterized in that it includes an upper structure and a lower structure that are spliced ​​together vertically. The upper structure is composed of several upper plates spliced ​​horizontally, and the lower structure is composed of several lower plates spliced ​​horizontally. The sidewalls of the upper plates are provided with corrugated grooves to form a biomimetic microtexture.

[0008] Preferably, one side of the upper plate is provided with a first protrusion, and the other side of the upper plate is provided with a corresponding first groove. The upper plates are engaged with each other through the corresponding first protrusion and first groove.

[0009] Preferably, the first protrusion of the upper plate has an axially formed injection hole, and the sidewall of the injection hole has through holes at different elevations; the injection hole is used to inject anti-seepage liquid, and the anti-seepage liquid is injected downward through the injection hole and the through holes on the sidewall to achieve a seal between the upper plates and play an anti-seepage role.

[0010] Preferably, the sidewall of the upper plate is provided with corrugated grooves to form a biomimetic microtexture.

[0011] Preferably, the upper and lower boards are staggered, that is, the splicing gaps between the upper boards and the splicing gaps between the lower boards are interspersed, and the splicing gaps between the upper boards are located in the middle of a single lower board.

[0012] Preferably, the bottom of the upper plate has two second grooves, and the top of the lower plate has two corresponding second protrusions. The upper plate and the lower plate are engaged by the corresponding second grooves and second protrusions. The positions of the two second grooves at the bottom of the upper plate and the positions of the two second protrusions at the top of the lower plate are adapted to the staggered splicing.

[0013] Preferably, a soil-breaking cone is provided below the lower plate.

[0014] Preferably, both the first protrusion and the first groove are T-shaped, and the horizontal splicing between the upper plates is achieved by interlocking.

[0015] As described above, the precast pile foundation and its construction method of this utility model have the following beneficial effects:

[0016] (1) This utility model combines an upper structure and a lower structure, and each part of the structure is assembled with single plates to meet the operation requirements and space constraints of narrow waterways.

[0017] (2) The present invention has a corrugated groove (fish scale corrugation) on the side wall of the upper plate, thereby forming a biomimetic micro-texture on the water-side of the pile, which meets the requirements of the fish migration channel, while increasing turbulence damping and reducing the flow velocity by 10%-15%.

[0018] (3) This utility model achieves the connection between the upper plate and the lower plate through the concave-convex structure in the vertical direction, making installation and construction more convenient.

[0019] (4) The present invention achieves horizontal connection between the upper plates through a T-shaped concave-convex structure, making the splicing structure more stable.

[0020] (5) The present invention achieves lateral connection between the lower plates by edge alignment installation, resulting in minimal frictional resistance and easier installation.

[0021] (6) This utility model designs injection holes at the splicing of the upper plates and opens through holes at different elevations on the sidewalls of the injection holes. After the upper plates are spliced ​​together, the anti-seepage liquid is injected through the injection holes. The anti-seepage liquid is injected downward through the injection holes and the through holes on the sidewalls (that is, forming a seepage channel) to achieve sealing between the upper plates and play an anti-seepage role.

[0022] (7) By staggering the upper plate with the upper plate, this utility model can prevent the seepage-proof liquid from flowing into the lower structure when the upper plate is injected with seepage-proof liquid, so that the seepage-proof liquid can have a better effect.

[0023] (8) The solid soil-breaking cone at the bottom of the lower plate of this utility model can effectively deal with hard soil layers and can effectively avoid the situation that is difficult to install due to resistance during construction. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the pile group of this utility model.

[0025] Figure 2 for Figure 1 The main view.

[0026] Figure 3 This is a cross-sectional view of the superstructure.

[0027] Figure 4 This is a structural diagram of the upper plate.

[0028] Figure 5 This is a structural diagram of the lower plate.

[0029] Figure 6 This is a schematic diagram of the installation of the lower structure of this utility model.

[0030] Figure 7 This is a schematic diagram of the installation of the piles according to this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Upper plate; 11-First protrusion; 12-First groove; 13-Second groove; 2-Lower plate; 21-Second protrusion; 3-Soil-breaking cone; 4-Corrugated groove; 5-Injection hole; 51-Through hole; 6-Soil layer. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] A precast pile foundation includes an upper structure and a lower structure. The upper structure is composed of several upper plates 1 spliced ​​together, and the lower structure is composed of several lower plates 2 spliced ​​together.

[0035] The upper plate 1 has a first protrusion 11 on one side and a corresponding first groove 12 on the other side. The upper plates 1 are connected by the corresponding first protrusion 11 and first groove 12. The first protrusion 11 has an axial injection hole 5, and the side wall of the first protrusion 11 has through holes 51 at different elevations that are connected to the injection hole 5. After the upper plates 1 are spliced ​​together, the anti-seepage liquid is injected into the injection hole 5 at the connection. The anti-seepage liquid is injected downward through the injection hole 5 and the through hole 51 on the side wall to achieve a seal between the upper plates 1 and the upper plates 1, thereby playing a seepage prevention role.

[0036] Specifically, the first protrusion 11 and the first groove 12 are T-shaped, and the horizontal splicing between the upper plate 1 and the upper plate 1 is achieved by fitting them together.

[0037] The side wall of the upper plate 1 is provided with a corrugated groove 4 to form a biomimetic microtexture 4 (fish scale corrugation).

[0038] The upper plate 1 has two second grooves 13 at its bottom, and the lower plate 2 has two second protrusions 21 at its top corresponding to the two second grooves 13. The upper plate 1 and the lower plate 2 are engaged by the corresponding second grooves 13 and second protrusions 21, and the upper plate 1 and the lower plate 2 are joined by staggered joints. Specifically, the joint between the upper plate 1 and the lower plate 2 is located in the middle of a single lower plate 2, so as to offset the joint between the lower plates 2 and the lower plate 2. The positions of the two second grooves 13 at the bottom of the upper plate 1 and the positions of the two second protrusions 21 at the top of the lower plate 2 are adapted to the staggered joints. The staggered joints between the upper plate 1 and the lower plate 2 can prevent the seepage-proof liquid from flowing into the lower structure when the seepage-proof liquid is injected, so that the seepage-proofing effect can be better.

[0039] A soil-breaking cone 3 is provided below the lower plate 2 for breaking the soil.

[0040] This utility model discloses a precast pile group, the installation method of which is as follows: Figure 6 As shown, the substructure is first installed in the soil layer 6 of the riverbank revetment. The lower plate 2 is inserted into the soil layer 6 using the soil-breaking cone 3 below it. Several lower plates 2 are spliced ​​together to form the substructure. During the splicing process, the lower plates 2 are aligned edge-to-edge, resulting in minimal frictional resistance and easier installation. Figure 7As shown, after the installation of the lower structure is completed, the installation of the upper structure begins. The upper plate 1 is fixed to the lower plate 2 by the concave-convex structure between the second groove 13 and the second protrusion 21. At the same time, the upper plate 1 is horizontally connected to the lower plate 2 by the concave-convex structure between the T-shaped first protrusion 11 and the first groove 12, thereby forming the upper structure and fixing it to the lower structure, and finally forming a pile row.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precast pile foundation, characterized in that, It includes an upper structure and a lower structure that are spliced ​​together. The upper structure is composed of several upper plates (1) spliced ​​together horizontally, and the lower structure is composed of several lower plates (2) spliced ​​together horizontally. The sidewall of the upper plate (1) is provided with a corrugated groove (4) to form a biomimetic microtexture.

2. The precast pile foundation according to claim 1, characterized in that, The upper plate (1) has a first protrusion (11) on one side and a corresponding first groove (12) on the other side. The upper plate (1) and the upper plate (1) are engaged by the corresponding first protrusion (11) and first groove (12).

3. A precast pile bank according to claim 2, characterized in that, An injection hole (5) is provided in the first protrusion (11) of the upper plate (1) along the axial direction. Through holes (51) are provided on the side wall of the injection hole (5) at different elevations. The injection hole (5) is used to inject anti-seepage liquid. The anti-seepage liquid is injected downward through the injection hole (5) and the through holes (51) on the side wall to achieve a seal between the upper plate (1) and the upper plate (1), thereby playing an anti-seepage role.

4. A precast pile bank according to claim 1, characterized in that, The upper board (1) and the lower board (2) are staggered, that is, the splicing gap between the upper board (1) and the splicing gap between the lower board (2) are intersected, and the splicing gap between the upper board (1) and the lower board (2) is located in the middle of a single lower board (2).

5. A precast pile bank according to claim 4, characterized in that, The bottom of the upper plate (1) has two second grooves (13), and the top of the lower plate (2) has two corresponding second protrusions (21). The upper plate (1) and the lower plate (2) are engaged by the corresponding second grooves (13) and second protrusions (21). The positions of the two second grooves (13) at the bottom of the upper plate (1) and the positions of the two second protrusions (21) at the top of the lower plate (2) are adapted to the staggered splicing.

6. A precast pile bank according to claim 1, characterized in that, A soil-breaking cone (3) is provided below the lower plate (2).

7. A precast pile bank according to claim 2, characterized in that, The first protrusion (11) and the first groove (12) are both T-shaped, and the horizontal splicing between the upper plate (1) and the upper plate (1) is achieved by fitting together.

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