Floating and lifting integrated pile foundation scour prevention structure, manufacturing and construction method

Abstract

To provide a floating / lifting integrated type pile foundation scour prevention structure, and a manufacturing and constructing method thereof in a technical field of marine construction which can achieve scour prevention effects and convenience and economical efficiency in construction at the same time.SOLUTION: A floating / lifting integrated type pile foundation scour prevention structure is composed of: a rubber inner; a concrete casing 200 covering an outside of the rubber inner and fixedly connected to the rubber inner; a steel frame pre-embedded within the concrete casing 200, having both ends in a vertical direction and both ends in a horizontal direction axially penetrating the concrete casing, and having horizontal hooks 340 and vertical hooks 350 pre-manufactured to correspond to each of them; a hanging ring 400 provided at a ceiling of the concrete casing 200 and pre-manufactured and connected to the steel frame; an exhaust hole 500 provided at the ceiling of the concrete casing 200 and communicating with an internal space of the rubber inner; and a water supply hole provided at a bottom of the concrete casing 200 and communicating with the internal space of the rubber inner.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical field of marine construction, and more particularly to a scour prevention structure for pile foundations. [Background technology]

[0002] Generally, in port engineering and construction, pile foundations are used to transfer the load from above to a layer with excellent load-bearing capacity deep underground, thereby meeting the requirements for load-bearing capacity and settlement. Pile foundations are exposed to the action of waves and tides over a long period of time in complex water environments. As a result, the soil around the pile foundations is constantly eroded and scouring occurs. The scouring phenomenon is particularly severe in areas with strong currents such as river mouths and tidal areas, which has a significant impact on the safety of port engineering works.

[0003] The currently common methods for preventing scouring of pile foundations mainly include scouring prevention measures such as riprap, sand packs, solidified soil, and soft mattresses. Of these, the riprap method has the advantage of being easy to install, but since the path of the riprap cannot be controlled, it is likely to collide with the foundation and destroy the anticorrosive coating, which affects the service life of the pile foundation. In addition, the sand pack method does not effectively protect the pile foundation because the geotextile used to make the sandbags is prone to deterioration, and the sand pack is damaged and the sand is washed away. In addition, the solidified soil scouring prevention measure is theoretically effective against localized scouring of the deposition area, but when the seabed is scoured overall, it is ineffective against scouring of the edge parts, so it has a poor protective effect. In addition, the soft mattress method is theoretically effective, but is difficult to install and is not used much in practice.

[0004] Therefore, how to solve the problem that it is difficult to simultaneously achieve the scour prevention effect and the convenience and economy of construction with conventional scour prevention structures has become a technical problem that needs to be solved as soon as possible for those skilled in the art. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above, an object of the present invention is to provide an integrated floating / lifting type scour prevention structure for pile foundations in order to solve the technical problem that it is difficult to simultaneously achieve the scour prevention effect, convenience of construction, and cost-effectiveness with conventional scour prevention structures. [Means for solving the problem]

[0006] The technical solutions adopted in the present invention are as follows:

[0007] The floating and lifting integrated pile foundation scour prevention structure includes multiple hollow body structures connected by hooks. the other end of the vertical rebar penetrates the concrete casing vertically, and the vertical rebar has a horizontal hook prefabricated at one end and a vertical hook prefabricated at the other end, and the upper ends of the vertical rebars penetrate the concrete casing vertically; a steel frame, the upper end of which penetrates the concrete casing vertically; a hanging ring, the upper end of which is connected to the steel frame prefabricated; an exhaust hole, the upper end of which is connected to the steel frame;

[0008] The horizontal and vertical hooks are equal in size and perpendicular in orientation.

[0009] Preferably, a hanging ring is prefabricated at the upper end of the vertical reinforcing bar.

[0010] Preferably, the outer surface of the rubber inner is provided with projections and recesses capable of improving the connection strength between the rubber inner and the concrete casing.

[0011] Preferably, the bottom of the concrete casing is pre-embedded with geotextile and bionic grass.

[0012] Preferably, the plurality of hollow body structures are linearly distributed in the vertical and horizontal directions, and two adjacent hollow body structures are connected by engaging with horizontal hooks and vertical hooks.

[0013] Preferably, the horizontal hooks and the vertical hooks of two adjacent hollow body structures are interlocked in a single layer or in two layers, and a rubber pad is provided between the hollow body structure and the pile foundation.

[0014] A second object of the present invention is to provide a manufacturing method for a floating and lifting integrated pile foundation scour prevention structure, the method including steps S10, S20, S30, S40 and S50.

[0015] In step S10, a steel frame is erected inside the mold and bound.

[0016] In step S20, the rubber inner is placed in the internal space of the steel frame, and air is supplied to seal it.

[0017] In step S30, concrete is poured into the gap between the rubber inner and the mold to fill it.

[0018] In step S40, the concrete casing is cured and formed on the outside of the rubber inner casing, and the concrete casing is formed with an exhaust hole and a water supply hole communicating with the inner space of the rubber inner casing.

[0019] In step S50, the sealing plug in the exhaust hole is removed to exhaust the air from the rubber inner casing, and the concrete casing is fixedly connected to the rubber inner casing.

[0020] A third object of the present invention is to provide a construction method for a floating and lifting integrated pile foundation scour prevention structure, the method including steps S100 and S200.

[0021] In step S100, a plurality of hollow structures are connected with hooks to form a scour prevention structure of a desired shape.

[0022] In step S200, the scour prevention structure is transported to a preset sea area and lowered to the seabed surface on one side of the pile foundation.

[0023] Preferably, step S200 includes first suspending the scouring prevention structure in water, towing and transporting the scouring prevention structure to a sinking position using a floating transport method, and then pulling a rope to remove the sealing plug in the water supply hole, thereby sinking the entire scouring prevention structure.

[0024] Preferably, step S200 includes first suspending the scouring prevention structure on a transport ship, transporting the scouring prevention structure to a sinking position by ship transport method, removing the sealing plug in the water supply hole, and suspending and sinking the scouring prevention structure in water by a crane on the transport ship. Effect of the Invention

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. In the present invention, by forming a cavity inside the hollow body structure using the rubber inner, it is possible to reduce the weight of the scouring prevention structure, reduce the amount of concrete used, and reduce manufacturing costs. It also becomes possible to achieve floating transportation and sinking of the scouring prevention structure by exhausting air and supplying water to the rubber inner, thereby reducing the requirements for the towing transport vessel.

[0027] 2. In the scour prevention structure of the present invention, multiple hollow structures are connected by engaging with horizontal and vertical hooks of steel frames. Since the connection by engaging has better flexibility, multiple hollow structures can be engaged to assemble a scour prevention structure of any shape. In addition, it can be more easily adapted to the topography of the seabed, and can be engaged in two layers or a single layer depending on the situation at the site. In addition, since all of the hollow structures are pre-modularized, the overall assembly is excellent. There can be various shapes for scouring the seabed surface, but by simply connecting and combining a certain number of hollow structures, it is possible to design a scour prevention structure of any shape, such as a circle, a square, a rectangle, etc., to meet the needs of various sites. In addition, it is also possible to specify the area of ​​the scour groove based on on-site measurement, and quickly assemble it on-site to the shape of the scour groove and sink it to a specified position.

[0028] 3. The steel frame and hollow structure of the present invention can be quickly fabricated in advance. Also, when it is discovered that the design situation differs from the site situation, it can be quickly connected and compensated for. Also, it can be quickly assembled and connected both on land and on a ship. This improves the practicality of the scour prevention structure.

[0029] 4. Since the steel frame in the present invention is located outside the rubber inner, when manufacturing the hollow structure, the volume and position of the rubber inner can be regulated by the steel frame. In addition, by combining a molding die, the thickness of the poured concrete casing and the size of the cavity can be controlled. This not only allows the buoyancy of the hollow structure to be quantitatively controlled, but also facilitates large-scale and mass production, and further reduces the construction cost of the scour prevention structure, resulting in better economic efficiency. In addition, since the concrete casing covers the outside of the impermeable rubber inner, a cavity is formed inside the concrete casing, which not only enables the hollow structure to be transported by floating, but also prevents seawater from entering the internal space through the concrete casing during floating transportation, thereby ensuring the safety of the floating transportation of the scour prevention structure. In addition, since the procurement price of the rubber inner is low, it is possible to minimize the manufacturing cost of the scour prevention structure and improve the economic efficiency of the scour prevention structure, on the premise that the requirements for floating transportation of the scour prevention structure are met.

[0030] 5. The steel frame in the present invention has the following five functions. First, the steel frame can flexibly connect two adjacent hollow structures (connected by hooks), thereby improving the adaptability of the assembled scour prevention structure to the seabed topography. Second, the steel frame is combined with the concrete casing to form a reinforced concrete structure. This structure is simple and easy to manufacture, and can improve the structural strength of the hollow structure. Third, the steel frame can transmit force instead of the concrete casing. Since the steel frame has excellent connection integrity, the force action is simple and clear. In addition, the stability of the entire structure is guaranteed, and it is fully adaptable to construction methods such as lifting work, floating transportation, and laying that are often performed on the sea. Fourth, the steel frame can regulate the volume and position of the rubber inner. Therefore, it is possible to accurately control the thickness of the concrete casing and the size of the cavity based on the actual needs and calculation results, making it easier to float the structure. In addition, the cavity formed also reduces the use of concrete material. Fifth, by fabricating lifting hooks in advance on the steel frame, which serves as the vertical framework and also as the main point of force during lifting and transportation, the lifting and construction of the scouring prevention structure becomes easier. [Brief description of the drawings]

[0031] [Figure 1] FIG. 1 is a schematic structural diagram of a hollow body structure according to the present invention. [Diagram 2] FIG. 2 shows the relative positions of the rubber inner liner and the steel frame. [Diagram 3] FIG. 3 is a front view of FIG. [Figure 4] FIG. 4 is a plan view of FIG. [Diagram 5] FIG. 5 is a schematic perspective view of the steel frame. [Figure 6] FIG. 6 is a schematic perspective view of the integrated floating and lifting type pile foundation scour prevention structure. [Figure 7] FIG. 7 is a front view of the integrated floating and lifting type pile foundation scour prevention structure. [Figure 8] FIG. 8 is a schematic diagram of the connection of horizontal and vertical hooks. [Figure 9]Figure 9 is a reference diagram 1 showing the usage state of the floating / hoisting integrated pile foundation scour prevention structure. [Figure 10] Figure 10 is Reference Diagram 2 of the usage state of the floating / hoisting integrated pile foundation scour prevention structure. [Figure 11] Figure 11 is Reference Diagram 3 of the use of the floating / hoisting integrated pile foundation scour prevention structure. [Figure 12] Figure 12 is Reference Figure 4 showing the usage state of the floating / hoisting integrated pile foundation scour prevention structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Note that these embodiments are merely for the purpose of explaining the present invention and are not intended to limit the present invention.

[0033] In the description of the present invention, the directions or positional relationships indicated by terms such as "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "ceiling", "bottom", "inside", and "outside" are merely for convenience and simplification of the description of the present invention, and do not expressly or imply that the target device or member has a specific direction and must be constructed and operated in a specific direction. Therefore, they should not be construed as limiting the present invention. In addition, the terms "first" and "second" are merely for convenience of description, and should not be construed as expressing or implying relative importance.

[0034] It should be noted that, unless otherwise clearly defined and limited, in the description of the present invention, the terms "attach", "connect" and "connect" should be interpreted broadly. For example, they may be fixed connections, detachable connections, or integral connections. They may also be mechanical connections or electrical connections. They may also be direct connections, indirect connections via an intermediate medium, or internal connections between two members. Those skilled in the art can interpret the specific meanings of the above terms in the present invention according to the specific circumstances.

[0035] Additionally, unless otherwise specified, in the description of the present invention, "plurality" means two or more than two.

[0036] Example: As shown in Figures 1 to 12, the floating / lifting integrated pile foundation scouring prevention structure is used to prevent and protect the pile foundation of an offshore wind power generation plant from scouring. The scouring prevention structure is formed by interlocking a plurality of hollow body structures 10. The hollow body structures 10 include a rubber inner 100, a concrete casing 200, a steel frame 300, a hanging ring 400, an exhaust hole 500, and a water supply hole 600.

[0037] The concrete casing 200 covers the outside of the rubber inner 100. The concrete casing 200 is fixedly connected to the rubber inner 100.

[0038] The steel frame 300 is embedded in the concrete casing 200 in advance. The steel frame 300 includes horizontal reinforcing bars 310, vertical reinforcing bars 320, and vertical reinforcing bars 330. The horizontal reinforcing bars 310 are embedded in the concrete casing 200 in advance in a horizontal direction. One end of the horizontal reinforcing bars 310 extends in a horizontal direction to penetrate the concrete casing 200, and a horizontal hook 340 is formed in advance by integral molding. The other end of the horizontal reinforcing bars 310 extends in a horizontal direction to penetrate the concrete casing 200, and a vertical hook 350 is formed in advance by integral molding. The vertical reinforcing bars 320 are embedded in the concrete casing 200 in a vertical direction in advance. One end of the vertical reinforcing bars 320 extends in a vertical direction to penetrate the concrete casing 200, and a horizontal hook 340 is formed in advance by integral molding. The other end of the vertical reinforcing bar 320 extends vertically and penetrates the concrete casing 200, and has a vertical hook 350 fabricated in advance by integral molding. The horizontal hook 340 and the vertical hook 350 are equal in size and vertical in direction. In other words, the vertical hook 350 faces upward or downward, and the horizontal hook 340 faces forward or backward.

[0039] The hanging ring 400 is installed on the ceiling of the concrete casing 200. The hanging ring 400 is prefabricated and formed on the upper end of the steel frame 300.

[0040] The exhaust hole 500 is provided in the ceiling of the concrete casing 200. The exhaust hole 500 communicates with the inner space of the rubber inner 100.

[0041] The water supply hole 600 is provided at the bottom of the concrete casing 200. The water supply hole 600 communicates with the inner space of the rubber inner 100.

[0042] In the present application, a hollow structure is adopted, a steel frame 300 is installed around the rubber inner 100, and a concrete casing 200 is poured around the rubber inner 100 to form the structure. The combination of the steel frame 300 and the concrete casing 200 can improve the structural strength of the hollow body structure 10. In addition, by forming a cavity inside the hollow body structure 10 using the rubber inner 100, it is possible to reduce the weight of the scour prevention structure, reduce the amount of concrete used, and reduce the manufacturing cost. It is also possible to realize floating transportation and sinking of the hollow body structure 10 by exhausting and supplying water to the rubber inner 100, and the requirements for the towing transport ship are reduced. In addition, by previously preparing horizontal hooks 340 and vertical hooks 350 at both ends in the lateral and longitudinal directions of the steel frame 300, two adjacent hollow body structures 10 can be easily connected by being hooked together, which not only makes the construction of the scour prevention structure easier, but also makes it possible to standardize and mass-produce the scour prevention structure. Furthermore, by transmitting the impact force from the water flow received by the concrete casing 200 through the horizontal reinforcing bars 310 or the vertical reinforcing bars 320, the effect of the impact force from the water flow on the concrete casing 200 can be reduced, improving the stability of the scour prevention structure. Furthermore, by previously fabricating the lifting rings 400 on the upper part of the steel frame 300, it becomes easy to lift the hollow body structure 10, and the manufacturing cost of the crane can be reduced.

[0043] In a specific embodiment, as shown in Figures 2, 3, 4 and 5, the vertical steel bar 330 is pre-embedded vertically into the concrete casing 200. The upper end of the vertical steel bar 330 extends vertically to penetrate the concrete casing 200, and the hanging ring 400 is pre-fabricated by integral molding.

[0044] 5, the steel frame 300 is preferably a rectangular parallelepiped frame, and is made by bundling and fixing four horizontal reinforcing bars 310, four vertical reinforcing bars 320, and four vertical reinforcing bars 330. A hanging ring 400 is prefabricated at the upper end of each vertical reinforcing bar 330 by integral molding. The portion of the steel frame 300 exposed from the concrete casing 200 is coated with anticorrosive paint, and the hanging ring 400 is also coated with anticorrosive paint.

[0045] As shown in FIG. 5, the horizontal hook 340 in this embodiment refers to a hook whose entirety is horizontally arranged. That is, the axis of the hook is perpendicular to the horizontal plane. All the horizontal hooks 340 face one side and are coated with anticorrosive paint. The vertical hook 350 refers to a hook whose entirety is vertically arranged. That is, the axis of the hook is parallel to the horizontal plane. All the vertical hooks 350 face one side and are coated with anticorrosive paint. The horizontal direction in this application refers to the direction of the double-headed arrow in FIG. 5, the vertical direction refers to the direction of the solid single arrow in FIG. 5, and the vertical direction refers to the direction of the dotted single arrow in FIG. 5.

[0046] In a specific embodiment, the outer surface of the rubber inner 100 is provided with an uneven portion (not shown). The uneven portion can strengthen the connection strength between the rubber inner 100 and the concrete casing 200. That is, after concrete is poured onto the outside of the aerated rubber inner 100, the concrete casing 200 formed by curing can be fixedly connected to the rubber inner 100. Furthermore, even after the air is exhausted from the rubber inner 100, the concrete casing 200 remains fixedly connected to the rubber inner 100.

[0047] Specifically, the uneven portion may be a pattern or may have an uneven shape.

[0048] In a specific embodiment, geotextile and bionic grass are embedded in advance in the bottom of the concrete casing 200. That is, before pouring concrete, the geotextile and bionic grass are laid under the steel frame 300. In this way, it is possible to prevent the outflow of soil around the pile foundation 20 by utilizing the backfiltration function of the geotextile and the stirring effect of the bionic grass.

[0049] In a specific embodiment, as shown in Figures 6, 7 and 8, the scour prevention structure is a structure in which a plurality of hollow structures 10 are linearly distributed in the horizontal and / or vertical directions and are interlocked with each other, and the scour prevention structure can surround at least one side of the pile foundation 20.

[0050] Preferably, in the case of a ground that requires high adaptability to the location, for example, the ground surface is not uniform in height, uneven and not flat, the horizontal hooks 340 and the vertical hooks 350 in the upper layer of two adjacent hollow body structures 10 distributed laterally and / or vertically form a single-layer hook-up connection. Also, in the case of a water body with strong winds and waves at the site, the horizontal hooks 340 and the vertical hooks 350 in the upper and lower layers of two adjacent hollow body structures 10 distributed vertically and / or horizontally form a two-layer hook-up connection.

[0051] More preferably, a rubber pad 30 is provided between the hollow body structure 10 and the pile foundation 20 to reduce the impact of the scour prevention structure on the pile foundation 20.

[0052] 1, 2 and 5, the manufacturing method of the floating and lifting integrated pile foundation scour prevention structure includes steps S10, S20, S30, S40 and S50.

[0053] In step S10, the steel frame 300 is erected and bound in the mold, and horizontal hooks 340 and vertical hooks 350 are provided at both lateral and longitudinal ends of the steel frame 300, respectively.

[0054] Specifically, four horizontal reinforcing bars 310, four vertical reinforcing bars 320, and four vertical reinforcing bars 330 are bound and fixed in a mold to form a rectangular parallelepiped steel frame 300. Horizontal hooks 340 are formed in advance by integral molding at one end of the horizontal reinforcing bars 310 and the vertical reinforcing bars 320. Furthermore, vertical hooks 350 are formed in advance by integral molding at the other ends of the horizontal reinforcing bars 310 and the vertical reinforcing bars 320. Furthermore, a hanging ring 400 is formed in advance by integral molding at the upper end of the vertical reinforcing bar 330.

[0055] In other embodiments, the steel frame 300 may have other shapes, such as an oval shape.

[0056] In step S20, the rubber inner 100 is placed in the internal space of the steel frame 300, and air is supplied thereto to seal it.

[0057] Specifically, the rubber inner 100 is placed in the internal space of a steel frame 300. The ceiling of the rubber inner 100 communicates with an exhaust pipe, and the bottom of the rubber inner 100 communicates with a water supply pipe. Air is supplied to the rubber inner 100 from the exhaust pipe in the ceiling (the water supply pipe is sealed with a sealing plug), and then the exhaust pipe in the ceiling of the rubber inner 100 is blocked with the sealing plug. The steel frame 300 plays a role in regulating the volume of the rubber inner 100.

[0058] In step S30, concrete is poured into the gap between the rubber inner 100 and the mold to fill it.

[0059] Specifically, concrete is poured into the mold until the gap between the rubber inner 100 and the mold is filled with concrete. That is, the concrete covers the entire outside of the steel frame 300. In addition, both the exhaust pipe and the water supply pipe on the rubber inner 100 are exposed from the concrete.

[0060] In step S40, the concrete casing 200 is hardened by curing and formed on the outside of the rubber inner 100. Also, the concrete casing 200 is formed with an exhaust hole 500 and a water supply hole 600 communicating with the internal space of the rubber inner 100.

[0061] In step S50, the sealing plug in the exhaust hole is removed to exhaust air from the rubber inner 100. And the concrete casing 200 remains fixedly connected to the rubber inner 100.

[0062] Specifically, after the concrete has cured, it solidifies to become the concrete casing 200 and is fixedly connected to the rubber inner casing 100. Even if the sealing plug in the exhaust pipe is removed, the evacuated rubber inner casing 100 remains fixedly connected to the concrete casing 200.

[0063] Example: As shown in Figs. 9, 10, 11 and 12, the construction method of the floating / lifting integrated pile foundation scour prevention structure includes steps S100 and S200.

[0064] In step S100, a plurality of hollow body structures 10 are connected vertically and / or horizontally with hooks to form a scour prevention structure of a desired shape.

[0065] Specifically, multiple hollow body structures 10 are linearly distributed in the vertical and / or horizontal directions, and the horizontal hooks 340 and vertical hooks 350 of two adjacent hollow body structures 10 are connected by engaging them with each other to form a scouring prevention structure that can be fitted into the pile foundation 20.

[0066] In step S200, the scour prevention structure is transported to a preset sea area and lowered to the seabed surface on one side of the pile foundation 20.

[0067] In a specific embodiment, first, the assembled scour prevention structure is hoisted and transported to the sea surface by the lifting ring 400, and the rope of the sealing plug in the water supply hole 600 is tied to the winch of the towing transport ship. Next, the scour prevention structure is towed and transported to the position of the specified pile foundation 20 by a floating transport method, and after accurately positioning it, the winch is started to remove all the sealing plugs in the water supply holes 600. This fills the internal space of the rubber inner 100 with water, and the entire scour prevention structure is lowered to the seabed surface.

[0068] In another specific embodiment, first, the assembled scour prevention structure is lifted and transported to a transport ship by the lifting ring 400, and then transported to a predetermined position of the pile foundation 20 by the transport ship. Next, after accurate positioning, the sealing plugs in all the water supply holes 600 are removed, and the scour prevention structure is lowered into seawater by a crane on the transport ship. This fills the internal space of the rubber inner 100 with water, and the entire scour prevention structure is lowered to the seabed surface.

[0069] Compared with the prior art, the present application has at least the following beneficial technical effects:

[0070] 1. The scour prevention structure of this application is composed of a rubber inner liner, a steel frame and a concrete casing, and can be standardized and produced in a standardized manner.

[0071] 2. The scour prevention structure of the present application can adopt different transportation methods depending on the construction environment conditions. When a floating towing transport is adopted, the requirements for the construction ship can be effectively reduced, the construction procedures on the water can be reduced, and the construction costs can be reduced. In addition, after being towed to a specified position by the floating type, the scour prevention structure can be sunk to the seabed surface by filling it with water. Therefore, compared with scour prevention measures such as sand packs and soft mattresses, it is possible to save on the manufacturing costs of the crane. In addition, when a conventional ship transportation method is adopted, the hollow scour prevention structure weighs less than a solid scour prevention structure, so the requirements for the towing transport ship can be reduced.

[0072] 3. In the present application, the scour prevention structure can be flexibly connected according to the conditions of the site. In the case of ground that requires high adaptability to the location, only the top two vertical or horizontal rebars of adjacent hollow structures are connected with hooks. In this way, a part of the scour prevention structure is given a certain rotational deformation ability, so that it can better adapt to the terrain. Also, in the case of a water area with strong winds and waves at the site, the stability of the entire scour prevention structure can be guaranteed by connecting the two upper and lower rows of four horizontal or vertical rebars of two adjacent hollow structures with hooks.

[0073] 4. The hollow structure of the present application can be assembled into any shape of scour prevention structure using hooks, so it has a wide range of application to ocean currents and geological environments.

[0074] 5. The rubber of the present application has excellent waterproofing properties and is inexpensive. In addition, by forming a scour prevention structure by combining a rubber inner layer with a concrete casing, the waterproofing requirements for the surface concrete are reduced, which is advantageous in that manufacturing costs can be reduced.

[0075] 6. The steel frame of the present application is advantageous in that it not only allows the volume of the rubber inner to be regulated, but also serves as a connection and lifting point, thereby reducing manufacturing, transportation and installation costs.

[0076] 7. In this application, four lifting points are provided on the ceiling of the scour prevention structure, so that during lifting work, any lifting point can be selected according to the construction and design needs and lifting work can be performed.

[0077] 8. In the present application, geotextile and bionic glass are pre-embedded in the bottom of the concrete casing, which not only makes it easy to manufacture and install, but also further ensures the anti-scouring effect.

[0078] 9. The shape of the bottom of the concrete casing of the present application can be adjusted according to the actual site conditions, which increases the applicability to the seabed and ensures the anti-scouring effect.

[0079] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make some modifications and replacements without departing from the technical principles of the present invention, and these modifications and replacements should also be considered as part of the scope of protection of the present invention. [Explanation of symbols]

[0080] 10 Hollow body structure 20 Pile Foundation 30 Rubber Pad 100 Rubber inner 200 Concrete casing 300 Steel 310 Transverse Reinforcement 320 Longitudinal Reinforcement 330 Vertical Reinforcement Bar 340 Horizontal Hook 350 Vertical Hook 400 Hanging Ring 500 exhaust hole 600 Water supply hole

Claims

1. A floating and lifting integrated pile foundation scour prevention structure, The method includes the steps of: (a) providing a plurality of hollow body structures (10) connected by hooks; and (b) providing a hollow body structure (10) having: A rubber inner (100); a concrete casing (200) that covers the outside of the rubber inner (100) and is fixedly connected to the rubber inner (100); a steel frame (300) located outside the rubber inner (100) and embedded in the concrete casing (200) in advance, the steel frame (300) including a horizontal reinforcing bar (310), a vertical reinforcing bar (320) and a vertical reinforcing bar (330), both horizontal ends of the horizontal reinforcing bar (310) penetrating the concrete casing (200) in the horizontal direction, the horizontal reinforcing bar (310) having a horizontal hook (340) prefabricated at one end and a vertical hook (350) prefabricated at the other end, both vertical ends of the vertical reinforcing bar (320) penetrating the concrete casing (200) in the vertical direction, the vertical reinforcing bar (320) having a horizontal hook (340) prefabricated at one end and a vertical hook (350) prefabricated at the other end, and the upper end of the vertical reinforcing bar (330) penetrating the concrete casing (200) in the vertical direction; A hanging ring (400) is provided on the ceiling of the concrete casing (200) and is prefabricated and connected to the steel frame (300); An exhaust hole (500) provided in the ceiling of the concrete casing (200) and communicating with the internal space of the rubber inner (100); The concrete casing (200) includes a water supply hole (600) provided at the bottom thereof and communicating with the internal space of the rubber inner (100); The horizontal hook (340) and the vertical hook (350) are equal in size and perpendicular in orientation; A floating and lifting integrated pile foundation scouring prevention structure characterized in that a plurality of the hollow body structures (10) are linearly distributed in the vertical and horizontal directions, and two adjacent hollow body structures (10) are connected by engaging with a horizontal hook (340) and a vertical hook (350).

2. The outer surface of the rubber inner (100) is provided with uneven portions that can improve the connection strength between the rubber inner (100) and the concrete casing (200), The floating and lifting integrated pile foundation scour prevention structure according to claim 1, characterized in that geotextile and bionic glass are embedded in the bottom of the concrete casing (200) in advance.

3. The horizontal hooks (340) and the vertical hooks (350) of two adjacent hollow body structures (10) are hooked together in a single layer or in two layers; The floating and lifting integrated pile foundation scour prevention structure according to claim 1, characterized in that a rubber pad (30) is provided between the hollow body structure (10) and the pile foundation (20).

4. A manufacturing method for a floating / lifting integrated pile foundation scour prevention structure for manufacturing the floating / lifting integrated pile foundation scour prevention structure according to any one of claims 1 to 3, Step S10: erecting and binding a steel frame (300) in the mold; Step S20 of placing the rubber inner (100) in the internal space of the steel frame (300) and sealing it by supplying air; Step S30: pouring concrete into the gap between the rubber inner (100) and the mold to fill it; Step S40: hardening the concrete casing (200) by curing to form it on the outside of the rubber inner (100), and forming an exhaust hole (500) and a water supply hole (600) communicating with the internal space of the rubber inner (100) in the concrete casing (200); and step S50 of removing the sealing plug in the exhaust hole (500) to exhaust air from the rubber inner casing (100), and the concrete casing (200) is fixedly connected to the rubber inner casing (100). A manufacturing method for a floating / lifting integrated pile foundation scouring prevention structure, characterized in that the steel frame (300) includes horizontal reinforcing bars (310), vertical reinforcing bars (320) and vertical reinforcing bars (330) that are tied together and fixedly connected, horizontal hooks (340) and vertical hooks (350) are prefabricated to correspond to both ends of the horizontal direction of the horizontal reinforcing bars (310), horizontal hooks (340) and vertical hooks (350) are prefabricated to correspond to both ends of the vertical direction of the vertical reinforcing bars (320), the horizontal hooks (340) and vertical hooks (350) are prefabricated to correspond to both ends of the vertical direction of the vertical reinforcing bars (320), and the horizontal hooks (340) and vertical hooks (350) are of equal size and vertical in direction, and a hanging ring (400) is prefabricated to the upper end of the vertical reinforcing bars (330).

5. A construction method for a floating / lifting integrated pile foundation scour prevention structure used in the construction of the floating / lifting integrated pile foundation scour prevention structure according to any one of claims 1 to 3, Step S100: connecting a plurality of hollow structures (10) with hooks to form a scour prevention structure of a desired shape; and step S200 of suspending the scouring prevention structure in water, towing and transporting the scouring prevention structure to a sinking position by a floating transport method, and then pulling a rope to remove the sealing plug in the water supply hole (600), thereby sinking the entire scouring prevention structure to the seabed surface on one side of the pile foundation (20).

Images