Anti-floating steel pipe pile structure for overwater construction and construction device thereof
By using galvanized steel pipe pile structures with expansion boots in the foundation of floating photovoltaic panels, the problems of insufficient pull-out force of anti-buoyancy anchors and high cost of anti-buoyancy concrete cast-in-place piles in existing technologies are solved. This achieves the simultaneous provision of bearing capacity and pull-out force, reduces construction costs, and improves the reusability of the device.
Patent Information
- Application Number
- CN202520388759.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In the construction of floating photovoltaic panel foundations, existing anti-buoyancy methods include anti-buoyancy anchors which provide limited pull-out resistance, and anti-buoyancy concrete cast-in-place piles which are costly and complex to manufacture, making it difficult to provide both bearing capacity and pull-out resistance simultaneously.
The steel pipe pile structure with expansion boots is adopted. By forming an expansion head at the bottom of the steel pipe pile, combined with galvanized steel pipe and threaded interface, the pull-out resistance is enhanced, and the vertical bearing capacity and pull-out resistance are achieved through reusable construction devices.
It enables the simultaneous provision of vertical bearing capacity and pull-out resistance during construction on water, reducing construction costs, and the construction equipment can be reused.
Smart Images
Figure CN223880320U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water photovoltaic panel foundation construction technical field, specifically speaking is a kind of water construction's anti-floating steel pipe pile structure and its construction device. BACKGROUND
[0002] When constructing photovoltaic panel foundation, in addition to providing bearing capacity for photovoltaic module, the foundation often needs to provide certain uplift resistance to cope with adverse weather such as strong wind. Especially for fish-light complementary type centralized photovoltaic site, photovoltaic panels are arranged on water sources such as fish ponds, and in addition to wind load, photovoltaic panel foundation also bears water buoyancy, which is not conducive to the stress of the entire photovoltaic panel.
[0003] The existing conventional anti-floating method mainly includes anti-floating anchor rod or anti-floating concrete bored pile. When using the existing anti-floating scheme for construction, the anti-floating anchor rod can generally only provide uplift resistance, and cannot provide bearing capacity for photovoltaic module; the conventional anti-floating anchor rod relies on the friction between the anchor rod body and the surrounding stratum to provide uplift resistance, and the capacity is limited, and the overall uplift resistance is usually increased by methods such as increasing the number of anchor rods and lengthening the anchor rod length. The anti-floating concrete bored pile can provide large uplift resistance and bearing capacity, but when constructed on water, the machinery is large and the process is complex, so the cost is high. SUMMARY
[0004] The utility model aims at providing a kind of water construction's anti-floating steel pipe pile structure and its construction device, the steel pipe pile is used for water construction, on the basis of traditional steel pipe pile, can form expansion head at the bottom of pile hole, to increase the overall uplift resistance of steel pipe pile, provide vertical bearing capacity and uplift resistance for its upper structure;And construction component can be reused, to achieve the purpose of cost saving.
[0005] In order to achieve the above technical purpose, the utility model provides a kind of water construction's anti-floating steel pipe pile structure, constructs in underwater drill hole, the anti-floating steel pipe pile structure includes the steel pipe pile of lower part with split and the expansion shoe with threaded interface, the expansion shoe includes upper portion cylinder portion and lower portion enlarged portion, the outer diameter of cylinder portion is matched with steel pipe pile inner diameter or less than steel pipe pile inner diameter, the diameter of enlarged portion is greater than steel pipe pile outer diameter, and less than the aperture of underwater drill hole, the inner threaded interface is equipped on the cylinder portion of expansion shoe, and a plurality of grouting holes are formed on the cylinder portion wall.
[0006] The utility model more preferably technical scheme: the steel pipe pile lower part is equipped with a plurality of splits, each split vertically extends 550~650mm from steel pipe pile pipe bottom, the width of each split is 45~55mm, and the spacing of adjacent split is 60~65mm.
[0007] The utility model discloses a preferable technical scheme: the expansion shoe's enlarged part diameter is greater than the steel pipe stake outer diameter 15~20mm, the length of the internal thread interface is 1 / 3~1 / 2 of the length of the cylinder part, and the grouting hole is distributed at the position where the cylinder part is not provided with the internal thread interface.
[0008] The utility model discloses a preferable technical scheme: the steel pipe stake adopts the galvanized steel pipe of anticorrosion.
[0009] The utility model discloses a preferable technical scheme: the construction device includes lifting nut, lifting rod, backing plate and water construction platform, the length of lifting rod is greater than the length of steel pipe stake, is equipped with with the lower thread section of matching on the expansion shoe on the lower end of lifting rod, is equipped with the upper thread section of matching with lifting nut on the upper end, and the lower end of lifting rod is passed through steel pipe stake and is connected with expansion shoe thread.
[0010] The utility model discloses a preferable technical scheme: the position of lifting rod near the upper thread section is equipped with two clamping slots in symmetry, and the construction device is also equipped with the backwinding wrench matched with the clamping slot.
[0011] The utility model discloses a preferable technical scheme: the upper end of lifting rod is at least 1m out of the upper end hole of steel pipe stake.
[0012] The utility model discloses a preferable technical scheme: the backing plate includes two arc clamping plates, and the arc clamping plate is equipped with steel wire rope perforation and bolt pair perforation, and the arc clamping plate is fixed through bolt after butt joint and forms the clamping hole of the inner ring matched with the outer diameter of steel pipe stake.
[0013] The utility model discloses a preferable technical scheme: the backing plate is fixedly connected with water construction platform through the steel wire rope.
[0014] (1) the steel pipe of the utility model adopts the galvanized steel pipe, and the lower part is provided with regularly arranged openings, the lifting movement of the threaded expansion shoe forces the opening of the pipe bottom to open and tightly stick to the hole wall rock mass, and finally forms the expansion head, which can effectively increase the uplift resistance of the steel pipe stake.
[0015] (2) the threaded expansion shoe of the utility model is provided with small holes, which can make the melon stone and mud smoothly pass and enter the hole bottom, ensure the strength and compactness of the expansion head, and further improve the overall uplift resistance of the steel pipe stake.
[0016] (3) The construction device comprises a base plate and a lifting rod, the base plate is divided into two halves, the lower part of the lifting rod is connected with the expansion shoe, and the steel pipe pile and the expansion shoe can be fixed on a mechanical operation platform together before the lifting nut is screwed, so that the steel pipe pile is limited to move upward when the lifting nut is screwed, and the threaded expansion shoe can move upward at the same time; the threaded rod is used for controlling the threaded expansion shoe to expand the lower part of the steel pipe, forming an expanded head, and the threaded rod and the base plate can be disassembled and reused.
[0017] The method is simple in operation, applicable to water construction, does not need to separately arrange the anti-floating anchor rod, can provide vertical bearing capacity and anti-pulling force after one-time hole forming installation, the threaded rod can be made into a standard part with different lengths, and can be reused for steel pipe piles with different design lengths. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 is a construction state schematic view of the utility model;
[0019] Figure 2 is a structure schematic view of a split steel pipe pile in the utility model;
[0020] Figure 3 is a structure schematic view of an expansion shoe in the utility model;
[0021] Figure 4 is Figure 3 a AA sectional view in the utility model;
[0022] Figure 5 is a structure schematic view of a lifting screw rod in the utility model;
[0023] Figure 6 is a structure schematic view of a base plate in the utility model;
[0024] Figure 7 is Figure 6 a BB sectional view in the utility model;
[0025] Figure 8 is a structure schematic view of a lifting nut in the utility model;
[0026] Figure 9 is a structure schematic view of a fastening wrench in the utility model;
[0027] In the drawing: 1 - lifting nut, 2 - lifting rod, 200 - upper threaded section, 201 - clamping groove, 202 - lower threaded section, 3 - base plate, 300 - arc-shaped clamping plate, 301 - wire rope perforation, 302 - bolt perforation, 4 - wire rope, 5 - water construction platform, 6 - water surface, 7 - steel pipe pile, 700 - split, 8 - expansion shoe, 800 - cylindrical part, 801 - enlarged part, 802 - grouting hole, 803 - threaded connection opening. DETAILED DESCRIPTION
[0028] The utility model will be further described below in combination with the drawings and embodiments. The drawings of the utility model are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the utility model. The technical solutions shown in the drawings below are specific schemes of the embodiments of the utility model, and are not intended to limit the scope of the claimed utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model. Figures 1 to 9
[0029] In the description of the utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed, or the orientation or positional relationship commonly understood by those skilled in the art, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0030] The embodiment provides a kind of anti-floating steel pipe pile structure of water construction, construction is in underwater borehole, with structure as Figures 1 to 4 As shown, the steel pipe pile 7 is provided with a plurality of slits 700 at the lower part, and the expansion shoe 8 is provided with a threaded interface, the expansion shoe 8 includes an upper cylindrical part 800 and a lower enlarged part 801, the outer diameter of the cylindrical part 800 matches or is smaller than the inner diameter of the steel pipe pile 7, the diameter of the enlarged part 801 is larger than the outer diameter of the steel pipe pile 7 and smaller than the diameter of the underwater borehole, the upper part of the cylindrical part 800 of the expansion shoe 8 is provided with an internal threaded interface 803, and a plurality of grouting holes 802 are formed on the wall of the cylindrical part 800. In the embodiment, the steel pipe pile 7 is made of a corrosion-resistant galvanized steel pipe, the outer diameter of the steel pipe pile 7 is 180 mm, a plurality of slits 700 are formed at the lower part of the steel pipe pile 7, each slit 700 vertically extends 600 mm from the bottom of the steel pipe pile 7, the width of each slit 700 is 50 mm, and the distance between adjacent slits 700 is 63 mm. The enlarged part 801 of the expansion shoe 8 is similar to a trumpet, the maximum part has a diameter of 196 mm and a height of 50 mm, and then the opening is tapered to the lower end of the cylindrical part 800, the outer diameter of the cylindrical part is 73 mm, the wall thickness is 6.5 mm, and the length is 180 mm, the upper part of 100 mm is provided with an internal thread 803, the lower part of 80 mm is uniformly provided with grouting holes 802, the diameter of the grouting holes 802 is 20 mm, and the diameter of the grouting holes 802 can pass through the melon stone and cement slurry. The diameter of the shoe foot of the expansion shoe 8 is slightly larger than the diameter of the steel pipe pile 7, when the expansion shoe 8 is lifted to a certain height, the shoe foot will push open the slits at the lower end of the steel pipe pile 7, so that the wall of the steel pipe pile 7 tightly abuts the hole wall, forming a steel pipe pile with an expansion head.
[0031] In the embodiment, a construction device of the anti-floating steel pipe pile structure constructed on water is provided, as shown in Figure 1 、 Figures 5 to 9As shown, the construction device comprises a lifting nut 1, a lifting rod 2, a backing plate 3 and a water construction platform 5, the length of the lifting rod 2 is greater than the length of the steel pipe pile 7, a lower threaded section 200 matched with a threaded interface on the expansion shoe 8 is arranged at the lower end of the lifting rod 2, and an upper threaded section 202 matched with the lifting nut 1 is arranged at the upper end of the lifting rod 2, the lower end of the lifting rod 2 is threadedly connected with the expansion shoe 8 through the steel pipe pile 7; the water construction platform 5 is fixedly arranged above the water surface 6, the orifice of the steel pipe pile 7 is higher than the water construction platform 5, the backing plate 3 is fixedly sleeved on the orifice of the steel pipe pile 7, and the backing plate 3 is fixedly connected with the water construction platform 5. Two clamping grooves 201 are symmetrically arranged at the position of the lifting rod 2 close to the upper threaded section 202, and the construction device is further provided with a back-off wrench matched with the clamping grooves 201, the lifting rod 2 can be separated from the expansion shoe 8 by rotating the lifting rod 2 counterclockwise by using the back-off wrench to sleeve the clamping grooves 201, so that the effect of recycling the lifting rod 2 is achieved. The upper end of the lifting rod 2 protrudes out of the upper end orifice of the steel pipe pile 7 by at least 1 m. The backing plate 3 comprises two arc-shaped clamping plates 300, the arc-shaped clamping plates 300 are both provided with a steel wire rope perforation 301 and a bolt pair perforation 302, and the arc-shaped clamping plates 300 are abutted and fixed by bolts to form a clamping hole with an inner ring matched with the outer diameter of the steel pipe pile 7; the steel wire rope perforation 301 is provided with four perforations which are uniformly distributed at four corners of the backing plate 3, when the expansion shoe 8 is lifted, in order to ensure that the steel pipe pile does not move up and down, the steel pipe pile 7 can be clamped by the backing plate 3, and four corners of the backing plate 4 are fixed on the water construction platform 5 by four steel wire ropes
[0032] The use process of the utility model will be further described below in combination with specific embodiments, and the embodiment is a water photovoltaic project in a certain town of Bijie City, Guizhou Province:
[0033] The site has a silt layer, a clay layer and a rock layer under the water surface, and the photovoltaic panel is erected on the water surface by the steel pipe pile to generate photovoltaic power. In order to ensure that the photovoltaic panel can maintain stability when affected by wind load and water buoyancy, the anti-floating steel pipe pile and the construction method in the application are used in the work, the length of the lifting rod 2 in the following embodiment is 10 m, the split steel pipe pile is a galvanized steel pipe pile, the wall thickness is 5 mm, the length is 9 m, and the rock penetration is 5 m. The specific construction method is as follows:
[0034] (1) RTK measurement is used to lay out a line, the construction position of the steel pipe pile is located and marked, and the water construction platform 5 is transferred to the pile position by starting a ship.
[0035] (2) The hole is formed by using the anchor cable drill pipe drilling process in the silt and clay layer, the hole diameter is 250 mm, and the pipe drilling outer diameter is 250 mm; the hole is formed by using the down-the-hole hammer in the lower rock layer, the hole diameter is 200 mm; after the hole is formed, the hole is washed or the hole is punched by compressed air by using the mud reverse circulation, so that the hole bottom is ensured to be free of rock debris, mud and the like, and the next step construction is carried out after the hole bottom sediment is measured to be qualified.
[0036] (3) connect the expansion shoe 8 with the internal thread interface to the lower end of the lifting rod 2, pass the connected lifting rod 2 and expansion shoe 8 from the bottom of the split steel pipe pile 7, and extend the top end of the lifting rod 2 by 1 m of the split steel pipe pile 7; put the steel pipe pile 7, the lifting rod 2 and the expansion shoe 8 connected thereto into the hole bottom by a machine.
[0037] (4) clamp the two half arc-shaped clamping blocks 300 to the pipe opening part of the steel pipe pile 7, fix the two arc-shaped clamping blocks 300 as a whole by the bolt pair penetrating the through holes 302 through the matched bolts and nuts; and fix the base plate 3 and the ground hook on the water construction platform 5 by the four steel wire ropes 4 through the four steel wire rope small holes 301 on the base plate 3.
[0038] (5) put the lifting nut 1 on the upper threaded section of the lifting rod 2, and turn the lifting nut 1 clockwise by using the tightening wrench, at this time, the expansion shoe 8 moves upward, when the expansion shoe 8 enters the split part of the steel pipe pile 7, the split part of the steel pipe pile 7 will be split outward and tightly adhere to the hole wall due to the fact that the outer diameter of the expansion shoe 8 is slightly larger than the inner diameter of the steel pipe pile 7, and the expansion horn is formed; when the threaded expansion shoe is blocked, continue to turn the lifting nut clockwise to make the threaded rod rise by about 30-50 cm, and ensure that the split has completely adhered to the hole wall.
[0039] (6) remove the base plate 3, clamp the back-off wrench on the clamping groove 201 on the lifting rod 2 201, and reverse the wrench until the lifting rod 2 and the expansion shoe 8 are separated, and then use the winch or drilling machine to pull out the lifting rod 2, which can be reused.
[0040] (7) lower the grouting pipe into the bottom of the steel pipe pile 7, and then fill the melon stone into the steel pipe pile; after filling, inject the cement slurry with a water-cement ratio of 1:0.5 into the grouting pipe until the slurry returns to the ground for one minute; the slurry and melon stone can enter the hole bottom through the grouting hole on the expansion shoe 8, and a solid expansion head is formed at the hole bottom, and the uplift capacity of the steel pipe pile is increased through the expansion head.
[0041] (8) after the first grouting is completed, remove the casing in the upper soil layer before the cement slurry is initially set, and then perform secondary grouting.
[0042] (9) repeat steps (1)-(8) to perform construction of the next steel pipe pile.
[0043] If the method in the utility model is used for construction of steel pipe piles with different lengths, standard lifting rods with different lengths can be made according to the design length of the steel pipe pile, water depth and other factors, and the repeatability is higher.
[0044] In summary, an embodiment of the utility model is listed, but the utility model is not limited to the above embodiment, as long as any same or similar means achieves the technical effect of the utility model, it should belong to the protection range of the utility model.
Claims
1. A floating resistant steel pipe pile structure for construction over water, constructed in a borehole under water, characterised in that: The anti-floating steel pipe pile structure comprises a steel pipe pile (7) provided with a split (700) at the lower part and an expansion shoe (8) provided with a threaded interface, the expansion shoe (8) comprises an upper cylindrical part (800) and a lower enlarged part (801), the outer diameter of the cylindrical part (800) matches or is smaller than the inner diameter of the steel pipe pile (7), the diameter of the enlarged part (801) is larger than the outer diameter of the steel pipe pile (7) and smaller than the hole diameter of the underwater drilling hole, and the threaded interface (803) is arranged at the upper part of the cylindrical part (800) of the expansion shoe (8), and a plurality of grouting holes (802) are arranged on the wall of the cylindrical part (800).
2. The anti-float steel pipe pile structure for the construction on water according to claim 1, characterized in that: The lower part of the steel pipe pile (7) is provided with a plurality of splits (700), each split (700) vertically extends 550-650 mm from the bottom of the steel pipe pile (7), the width of each split (700) is 45-55 mm, and the distance between adjacent splits (700) is 60-65 mm.
3. The anti-float steel pipe pile structure for construction on water according to claim 1 or 2, characterized in that: The diameter of the enlarged part (801) of the expansion shoe (8) is 15-20 mm larger than the outer diameter of the steel pipe pile (7), the length of the threaded interface (803) is 1 / 3-1 / 2 of the length of the cylindrical part (800), and the grouting holes (802) are distributed at the position where the threaded interface (803) is not arranged on the cylindrical part (800).
4. The anti-float steel pipe pile structure for construction on water according to claim 1 or 2, characterized in that: The steel pipe pile (7) is made of a corrosion-resistant galvanized steel pipe.
5. A construction apparatus for a floating construction anti-float steel pipe pile structure according to any one of claims 1 to 4, characterized by: The construction device comprises a lifting nut (1), a lifting rod (2), a backing plate (3) and a water construction platform (5), the length of the lifting rod (2) is greater than the length of the steel pipe pile (7), a lower threaded section (200) matched with the threaded interface on the expansion shoe (8) is arranged at the lower end of the lifting rod (2), an upper threaded section (202) matched with the lifting nut (1) is arranged at the upper end of the lifting rod (2), the lower end of the lifting rod (2) penetrates through the steel pipe pile (7) and is threadedly connected with the expansion shoe (8), the water construction platform (5) is fixedly arranged above the water surface (6), the aperture of the steel pipe pile (7) is higher than the water construction platform (5), and the backing plate (3) is fixedly sleeved on the aperture of the steel pipe pile (7) and is fixedly connected with the water construction platform (5).
6. The construction device of a floating construction anti-float steel pipe pile structure according to claim 5, characterized in that: Two clamping grooves (201) are symmetrically arranged at the position of the lifting rod (2) close to the upper threaded section (202), and the construction device is further provided with a back-off wrench matched with the clamping grooves (201).
7. The construction device of a floating construction anti-float steel pipe pile structure according to claim 5 or 6, characterized in that: The upper end of the lifting rod (2) protrudes out of the upper end aperture of the steel pipe pile (7) by at least 1 m.
8. The construction device of a floating construction anti-float steel pipe pile structure according to claim 5 or 6, characterized in that: The backing plate (3) comprises two arc-shaped clamping plates (300), the arc-shaped clamping plates (300) are both provided with a steel wire rope through hole (301) and a bolt through hole (302), and the two arc-shaped clamping plates (300) are abutted and fixed by bolts to form a clamping hole with an inner ring matched with the outer diameter of the steel pipe pile (7); the steel wire rope through holes (301) are uniformly distributed at the corner parts of the backing plate (3), and the backing plate (3) is fixedly connected with the water construction platform (5) by a plurality of steel wire ropes (4).