A fill placement apparatus, foundation structure and method for land reclamation

Abstract

The application discloses a filling device for reclamation, which comprises a bottom support assembly, a connecting piece and a prefabricated foundation platform, the bottom support assembly comprises a pile foundation, the bottom of the pile foundation is arranged in the seabed, and the height H of the upper end of the bottom support assembly is greater than the tide level of seawater; the foundation platform comprises a prefabricated frame, the prefabricated frame is connected with a reinforced concrete beam at opposite corners, the upper end of the bottom support assembly is fixed with the connecting piece, and the connecting piece is fixed with the prefabricated frame. The application has the advantages of rapid reclamation, island reef expansion, resource saving, environmental protection, simultaneous enhancement of the stability and durability of the expansion area of the island reef, guarantee of safety and reliability, and provision of a rapid and safe construction technology for the expansion of the island reefs in the sea area of China and the expansion of the coastal peninsula or coastal area in the marine direction.

Description

Technical Field

[0001] This invention relates to a reclamation device for land reclamation, and also to a foundation structure formed by combining the above-mentioned reclamation device, and a construction method for the above-mentioned foundation structure. Background Technology

[0002] The background of island and reef enlargement technology can be traced back to the late 20th century, when it was primarily developed to meet military needs. With technological advancements, this technology has gradually been applied to civilian sectors, such as tourism and oil and gas development. Island and reef enlargement technology is subject to limitations and requires consideration of many factors. First, the marine environment surrounding the island must be suitable for enlargement work. Second, the enlarged island or reef must fully consider environmental protection and sustainable development principles, proceeding under the premise of protecting the ecological environment. Finally, the enlarged island or reef must be able to support a sufficient population and infrastructure to meet the needs of social and economic development.

[0003] Island and reef expansion and reclamation projects are engineering projects that reinforce and enclose the coastline on the basis of land reclamation or deep-processing reclamation. Their purpose is to protect the coastline from marine erosion and wave damage, and to expand or enlarge the effective area of ​​the islands.

[0004] In existing technologies, the construction of reclamation projects often employs concrete structures or rock masonry structures. Concrete structures include reinforced concrete sheet pile dikes, reinforced concrete cantilever dikes, and reinforced concrete box dikes, which possess excellent load-bearing capacity and resistance to wind and wave erosion. Rock masonry structures are constructed by organizing large rock blocks according to specific rules, densities, and masonry methods to create breakwaters that effectively withstand ocean waves. After the reclamation project is completed, if land reclamation is required in the reclaimed area, it can be achieved through land reclamation and deep-processing reclamation. Land reclamation refers to gradually forming a landmass that meets design requirements by injecting large amounts of soil, rock, sand, and other filling materials into the sea. Land reclamation requires careful consideration of the marine ecological environment, as well as issues related to reclamation materials and transportation. Deep-processing reclamation involves reinforcing the surface of the reclaimed area by excavating, compacting, and piling seabed soil and rock materials, and then carrying out filling and construction work on its surface. Deep-processing reclamation is technically more challenging and requires specialized equipment and techniques. As mentioned above, existing technologies cannot meet the needs of rapid filling and reinforcement. Furthermore, island and reef expansion and reclamation projects require the excavation, compaction, and stockpiling of large amounts of seabed soil and rock materials, which consumes a lot of materials, has a long construction period, and impacts the ecological environment.

[0005] The applicant has previously applied for a filling device for foundation treatment by explosive silt replacement in tidal flat silt. In fact, this previous application can also be used for reef expansion. For reef expansion, corresponding rapid filling methods should be adopted according to different sea area geological conditions. When the geological condition of the sea area for reef expansion is a deep silt layer, reef expansion can be carried out by explosive silt replacement and the filling device of the previous application. On this basis, the applicant has made further improvements and proposed a method for rapid expansion of coastlines and reefs, especially applicable to the rapid expansion of reefs in general geological conditions (such as sandy) of sea areas. Summary of the Invention

[0006] In view of the above deficiencies, the object of the present invention is to provide a filling device for rapid expansion of reefs with rapid filling and reinforcement. The object of the present invention is also to provide a foundation structure including the above filling device. The object of the present invention is further to provide a construction method for the above foundation structure.

[0007] Therefore, a filling device for reclamation of the present invention includes a bottom support component, a connecting member, and a precast foundation platform. The bottom support component includes pile foundations, the bottom of the pile foundations is arranged in the seabed, and the height H of the upper end of the bottom support component is greater than the high tide level of the sea water. The foundation platform includes a precast frame, and diagonal connecting reinforced concrete beams are arranged in the precast frame. The upper end of the bottom support component is fixed to the connecting member, and the connecting member is fixed to the precast frame.

[0008] Further, at least connection holes are provided at the four corners of the precast frame. The connecting member is a columnar structure matching the connection holes. The connecting member passes through the connection holes and is fixed with a hoop.

[0009] Further, the frame is formed by casting reinforced concrete. The frame includes 4 side beams with a length of 3m - 7m and 2 diagonal connecting reinforced concrete beams. The cross-sectional width of the side beams and the diagonal connecting beams is 400mm - 800mm, and the height is 400mm - 800mm. The cross-section of the connection hole is a square with a side length of 300mm - 600mm or a circle with a diameter of 300mm - 600mm. The diameter of the pile foundation is 300mm - 1000mm.

[0010] Further, when the spacing 3m < L < 7m of the pile foundations, connection holes are reserved at the four corners of the frame and the central positions on the side beams. The upper end of the pile foundation is fixed to the connecting member. The connecting member passes through the connection holes and is fixed with a hoop.

[0011] When the pile foundation spacing 7m < L < 10m, at the four corners of the frame, a point 1000m - 2000mm directly below the center point of the frame, a precast member is formed by obliquely connecting reinforced concrete columns with a cross-section length of 200mm - 500mm and a width of 200mm - 500mm.

[0012] When the pile foundation spacing is 10m < L, at the points 1000mm - 2000mm directly below the center point of the frame at the four corners of the frame, reinforced concrete columns with a cross-sectional length of 200mm - 500mm and a width of 200mm - 500mm are obliquely connected. At the connection points, reinforced concrete columns with the same cross-sectional dimensions extend vertically upward to the plane of the hollow frame, and the columns extend vertically downward by 1000mm - 2000m to form prefabricated components.

[0013] Further, a hollow sleeve with a height of 500mm - 1500mm is reserved at the top of the pile foundation. The connecting member includes a precast column, and the cross-section of the precast column is the same as that of the hollow sleeve. The precast column is inserted into the hollow sleeve and fixed; or a sleeve with a height of 500mm - 1500mm, an outer cross-sectional length of 400mm - 1000mm, and a width of 400mm - 1000mm is provided at the bottom of the precast column, and the inner cross-section is the same as that of the pile foundation. The top of the pile foundation is fixed to the sleeve; the precast column passes through the connection hole and is fixed with a hoop. The bottom of the obliquely connected reinforced concrete column is fixed to the top of the pile foundation or fixed to the top of the pile foundation through the precast column.

[0014] Further, a steel plate with a thickness of 30mm - 150mm or a reinforced concrete slab with a thickness of 100mm - 200mm is arranged on the frame plane.

[0015] The present invention further includes a foundation structure for rapid sea area expansion using the above filling device, including a plurality of filling devices. One to several reinforced concrete connection structures are prefabricated on the upper part of the side of the frame to be connected. Adjacent filling devices are connected by one to several steel plates, and the steel plates are connected to the reinforced concrete connection structures. The gaps between adjacent reinforced concrete connection structures are covered with steel plates with a thickness of 40mm - 100mm.

[0016] The present invention further includes a construction method for the above foundation structure for rapid sea area expansion, including the following steps:

[0017] (1) Driving the pile foundation into the seabed bearing stratum according to the predetermined pile spacing;

[0018] (2) Hoisting the precast column to the designated position and connecting and fixing the lower end of the precast column to the top of the pile foundation;

[0019] (3) Hoisting the prefabricated component to the designated position, fixing the precast column in the connection hole or fixing it to the bottom of the obliquely connected reinforced concrete column;

[0020] (4) Laying a steel plate or a reinforced concrete slab on the surface of the frame, connecting adjacent filling devices with reinforced concrete connection structures, and laying steel plates on the gaps between adjacent filling devices;

[0021] (5) Pouring concrete or filling building materials on the steel plate or concrete slab on the surface of the frame to form an island reef foundation structure.

[0022] The beneficial effects of this invention are:

[0023] (1) Rapid expansion: This invention drives piles into the seabed and assembles foundation piles on the piles to form a foundation platform. The foundation platform is above the high tide level of the sea, which can facilitate construction operations such as filling earth and stone and pouring concrete. It has a more efficient construction speed and realizes rapid expansion of islands and reefs, thereby meeting human needs for the use of the ocean, such as transportation, oil drilling, tourism and so on.

[0024] (2) Resource saving and environmental protection: The foundation of this invention is higher than the high tide level of the sea, so there is no need to dredge a large amount of soil and stone materials from the seabed or the shore, nor is there a need to blow a large amount of soil and stone around the island and reef, which saves costs and has little impact on the natural environment around the excavation site and the expanded island and reef.

[0025] (3) The materials and design structure used in the island and reef expansion method of the present invention can enhance the stability and durability of the island and reef, and ensure safety and reliability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the prefabricated frame of Example 1;

[0027] Figure 2 This is a schematic diagram of the pile foundation and connectors;

[0028] Figure 3 This is a schematic diagram of the filling device in Example 1;

[0029] Figure 4 This is a schematic diagram of the steel plate or concrete slab laid in Example 1;

[0030] Figure 5 These are schematic diagrams of the prefabricated frames for Examples 2 and 3;

[0031] Figure 6 This is a schematic diagram of the prefabricated component in Example 2;

[0032] Figure 7 These are schematic diagrams of the hollow sleeves in the pile foundations of Examples 2 and 3;

[0033] Figure 8 A schematic diagram of the precast column and sleeve;

[0034] Figure 9 This is a schematic diagram of the combination of precast components and precast columns in Example 2;

[0035] Figure 10 This is a schematic diagram of Example 2;

[0036] Figure 11 This is a schematic diagram of the combination of precast components and precast columns in Example 3;

[0037] Figure 12 This is a schematic diagram of the basic structure of Example 3;

[0038] Figure 13 A schematic diagram of the island / reef expansion area.

[0039] Explanation of reference numerals in the attached drawings: 1. Pile foundation; 101. Hollow sleeve; 2. Steel structure column; 3. Foundation cap; 301. Precast frame; 302. Side beam; 303. Diagonal connecting beam; 304. Reinforced concrete column; 305. Reinforced concrete slab; 306. Connecting hole; 307. Reinforced concrete column; 4. Hoop; 5. Precast column; 501. Sleeve; 6. Bolt; 7. Connecting block; 701. Bolt hole; 8. Steel fixing plate; 9. Steel plate. Detailed Implementation

[0040] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0041] Reference Figures 1 to 13 As shown, a reclamation device for land reclamation according to the present invention includes a bottom support assembly, a connector, and a precast foundation platform 3. The bottom support assembly includes a pile foundation 1, the bottom of which extends into the seabed bearing layer, and the height H of the upper end of the bottom support assembly is greater than the high tide level. The foundation platform 3 includes a precast frame 301, and the diagonal of the precast frame 301 is connected by reinforced concrete beams to form diagonal connecting beams 303. The upper end of the bottom support assembly is fixed to the connector, and the connector is fixed to the precast frame 301. Figure 13The schematic diagram of the reef expansion area applicable to the present invention is shown. Generally, the expansion sea area needs to meet the conditions of having a relatively flat seabed topography and a wide and deep water area. In Embodiments 1 to 3 of the present invention, the precast frame 301 used is square, and other triangles, quadrilaterals, rectangles, polygons, or even circles, etc. can also be used. In the island expansion project, frame structures of various shapes may be used, including but not limited to the following scenarios: (1) When the expansion area of the reef is not a regular shape, the shape and structure of the frame of the present invention can be appropriately changed according to the actual terrain requirements, and multiple shapes can be combined. For example, if the size of the square frame at a certain position in the expansion area is not suitable or stuck, a circular or polygonal structure can be used. In addition, according to the terrain requirements, a certain side beam of the frame can be transformed, such as designing and customizing the side beam opposite to the coastline to match its shape. (2) In order to improve the construction progress and construct simultaneously from multiple directions, standard frames of the same shape such as square frames are used. However, standard frame structures may not be applicable at the joint of two construction directions. At this time, when designing this position, other suitable-shaped frames such as quadrilaterals, circles, etc. need to be used for transition. The pile foundation 1 usually adopts end-bearing piles, and the bottom of the pile foundation 1 penetrates into the seabed bearing stratum. The depth of the pile bottom entering the bearing stratum is 1 to 3 times the pile diameter. Of course, the pile foundation 1 can also adopt end-bearing friction piles, which usually also need to be driven into the bearing stratum because if friction piles are used and the pile bottom does not enter the bearing stratum, the settlement of the pile foundation 1 is likely to cause the expanded reef to be submerged by seawater. In order to quickly expand the reef, the pile foundation 1 is preferably a precast pile, such as a steel pipe pile, and the construction of the offshore precast pile foundation 1 is a mature existing technology, and the piling operation can be carried out by a piling ship. A large piling ship can drive the precast pile foundation into the bearing stratum dozens of meters or even hundreds of meters deep under the sea. Of course, the on-site casting method can also be used. The following will be described in detail through Embodiments 1 to 3.

[0042] Embodiment 1: When 3m < L < 7m, refer to Figure 2 As shown, pile foundations 1 with a length of 300mm - 1000mm are driven into the seabed. The height of the pile foundation 1 reaches the high tide level of the sea, the height of the pile foundation 1 is H, and the interval between the pile foundations 1 is L. Refer to Figure 1As shown, the precast frame 301 is square and includes four reinforced concrete side beams 302. The side beams 302 have a cross-sectional width of 400mm-800mm, a height of 400mm-800mm, and a length of 3m-7m. The diagonal of the precast frame 301 is connected by two reinforced concrete beams with a cross-sectional width of 400mm-800mm and a height of 400mm-800mm to form diagonal connecting beams 303. At the center of the four corners of the precast frame (meaning that the center position of the connecting hole 306 is located at the midpoint of the angle bisector) and at the center position, there are square connecting holes 306 with a side length of 300mm-600mm or circular diameter of 300mm-600mm. A connecting component of the same size, matching the connecting hole 306, is installed at the center of the pile top. A square steel column 2, 500mm-1000mm high and 300mm-600mm in side length and circular in diameter, is used to connect the pile foundation 1 and the precast frame 301 of the foundation cap 3. Concrete clamps 4 or other types of clamps are used for fixation. Figure 3 As shown. (Refer to...) Figure 4 As shown, 30mm-150mm thick steel plates or 100mm-200mm thick reinforced concrete slabs 305 are arranged on the frame plane.

[0043] The construction method of Example 1 includes the following steps:

[0044] (1) Prefabricate the required components and accessories in the factory, such as prefabricated pile foundation 1, steel structure column 2, steel plate, clamp 4, etc.

[0045] (2) Transport the prefabricated components to a safe location near the expansion site.

[0046] (3) In the predetermined expansion area, drive pile foundation 1 into the seabed at the predetermined location and pile spacing, and install steel structure column connectors on the pile top.

[0047] (4) Use a crane to hoist the prefabricated components to the designated position and connect them to the steel structure columns.

[0048] (5) Secure the structure to the piles with concrete or other types of clamps.

[0049] (6) After fixing, lay steel plates or reinforced concrete slabs 305 on the frame plane.

[0050] Example 2: When the spacing of pile foundation 1 is 7m ≤ L < 10m, pile foundation 1 with a diameter of 300mm-1000mm can be driven into the seabed, referring to... Figure 5As shown, the precast frame 301 is square, including four reinforced concrete side beams 302. The side beams 302 have a cross-sectional width of 400mm-800mm, a height of 400mm-800mm, and a length of 10m-20m. The diagonals of the precast frame are connected by two reinforced concrete beams with a cross-sectional width of 400mm-800mm and a height of 400mm-800mm. A square or circular connection hole 306 with a side length of 300mm-600mm or a diameter of 300mm-600mm is left at the center of each of the four corners of the frame. (Refer to...) Figure 6 As shown, at the center points of the four corners of the precast frame 301, and 1000mm-2000mm directly below the center point, reinforced concrete columns 307 with a cross-section of 200mm-500mm in length and 200mm-500mm in width are obliquely connected to form precast components. The connection method can be concrete casting, prefabrication, or a combination of both. Prefabrication involves assembling components separately using embedded parts and bolts. It should be noted that the connection holes 306 and the connection positions of the reinforced concrete columns 307 and the frame are at the center points of the four corners of the frame. The reinforced concrete columns 307 can be integrally formed with the frame and have the connection holes 306 pre-drilled, or they can be cast separately. The reinforced concrete columns 307 are connected to the pile foundation or the pile foundation's connecting parts using connectors, such as a collar at one end of the reinforced concrete column 307, which is fitted onto the pile foundation and fixed with a clamp. (Refer to...) Figure 7 , Figure 9 As shown, the system includes a precast column 5, which can serve as part of the bottom support assembly. The upper end of the precast column 5 acts as a connector, with its dimensions matching those of the connecting hole 306. The upper end of the precast column 5 passes through the connecting hole 306 and can be fixed with a clamp 4. A hollow sleeve 101, 500mm-1500mm high and with the same cross-section as the precast column 5, is pre-reserved at the top of the pile foundation 1. The precast column 5 and the hollow sleeve 101 are connected and fixed using bolts 6 or other methods. (Refer to...) Figure 8 As shown, a sleeve 501 with a height of 500mm-1500mm can also be installed at the bottom of the precast column 5. The outer cross-section is 400mm-1000mm long and 400mm-1000mm wide, and the inner cross-section is the same as that of the pile foundation 1. The top of the pile foundation 1 is fixed by self-anchoring or other methods. (Refer to...) Figure 10 As shown, the pile foundation 1 and the foundation cap 3 are connected. A precast column 5 is fixed at the connection point of the inclined reinforced concrete column 307, and the precast column 5 is connected to the hollow sleeve 101 at the top of the pile. A steel plate 30mm-150mm thick or a reinforced concrete slab 305 100mm-200mm thick is arranged on the frame plane.

[0051] The construction method of Example 2 is basically the same as that of Example 1, except that the installation steps of the precast column 5 and the pile top are added.

[0052] Example 3: When the pile foundation 1 has a spacing of 10m < L, pile foundations 1 with a diameter of 300mm - 1000mm can be driven into the seabed. Refer to Figure 11 As shown, the precast frame is square, including 4 side beams 302 made of reinforced concrete. The cross-section of the side beam 302 has a width of 400mm - 800mm, a height of 400mm - 800mm, and a length of 10m - 20m. The diagonals of the precast frame 301 are connected by two reinforced concrete beams with a cross-section width of 400mm - 800mm and a height of 400mm - 800mm to form diagonal connecting beams 303. Square connecting holes 306 with a side length of 300mm - 600mm or circular connecting holes 306 with a diameter of 300mm - 600mm are reserved at the center positions of the four corners of the frame. At the center points of the four corners of the frame, at a point 1m - 2m directly below the center point of the frame, reinforced concrete columns 307 with a cross-section length of 200mm - 500mm and a width of 200mm - 500mm are obliquely connected. At the connection points, reinforced concrete columns 304 with the same cross-section size as the inclined columns extend vertically upward to the plane of the precast frame 301. The reinforced concrete column 304 extends 1m - 2m directly below the connection point to form a precast component. Example 3 also includes precast columns 5. The structure of the precast column 5 and its connection method to the pile foundation 1 are basically the same as those in Example 2. The difference is that in Example 3, reinforced concrete columns 304 are provided above and below the connection points of the inclined concrete columns, and their cross-section sizes are the same as those of the precast column 5. The reinforced concrete column 304 is connected to the pile top in the same connection method as the precast column 5. Steel plates with a thickness of 30mm - 150mm or reinforced concrete plates 305 with a thickness of 100mm - 200mm are arranged on the frame plane.

[0053] The construction method of Example 3 includes the following steps:

[0054] (1) Precast the required precast components and various required fittings in the factory.

[0055] (2) Transport the precast components to a safe location near the expansion site.

[0056] (3) Drive pile foundations 1 into the sea.

[0057] (4) Use a crane to hoist the precast column 5 to the designated position and connect and fix it to the pile foundation 1.

[0058] (5) Use a crane to hoist the precast component to the designated position and connect it to the column, and fix the structure to the column with a hoop 4.

[0059] (6) After the fixation is completed, lay the reinforced concrete plate 305 on the frame plane.

[0060] In Embodiments 1, 2, and 3 above, the pile type can be round piles, square piles, or other existing pile types suitable for use in marine areas. It should be noted that in Embodiments 1, 2, and 3, the pile spacing of the filling device is related to the pile diameter, typically ranging from 3 to 15 times the pile diameter. The length of the side beam can be determined based on the pile spacing, i.e., it can also be determined based on the pile diameter.

[0061] In the sea area expansion area, one or more of the reclamation devices from Embodiment 1, Embodiment 2, or Embodiment 3 are selected according to a predetermined location, or a combination thereof are used. Generally, the upper plane of the frame of the reclamation device is horizontal, and the frame planes of each reclamation device are of equal or similar height, so that the frame planes are on the same plane or nearly on the same plane, and are connected to form the basic structure for island and reef expansion. Concrete or earth and other leveling materials can be poured on top, facilitating subsequent infrastructure construction, such as pipelines, airport runways, military and civilian buildings. The connection methods between the reclamation devices of Embodiments 1 to 3 can adopt the same or similar methods. The connection method of the reclamation device is described below using Embodiment 3 as an example: Refer to Figure 12 As shown, connecting blocks 7, 100mm-300mm long, 100mm-200mm wide, and 200mm-400mm high, are arranged on the center line and both sides of the prefabricated frame 301 on the side to be connected. The connecting blocks 7 are generally made of reinforced concrete. The upper part of the connector can also be used as a connecting block. The connecting blocks 7 are provided with circular reserved bolt holes 701 with a cross-sectional diameter of 16mm-30mm. On both sides of the reserved bolt holes 701, steel fixing plates 8 with a thickness of 20mm-50mm and a width of 200mm-400mm are arranged vertically. Steel fixing plates 8 of different lengths are selected according to the actual distance on site and fixed with bolts 6 through the reserved bolt holes 701. The gap between the two connecting structures is filled with steel plates 9 with a thickness of 40mm-100mm and fixed with expansion bolts 6.

[0062] In the above embodiments 1, 2 and 3, refer to Figure 13 As shown, A is the coastline, B is the dike, and C is the intersection of the expansion area and the coastline. Methods for rapid expansion of islands, reefs, or coastlines include:

[0063] S1: Conduct a survey to determine the scope of the expansion;

[0064] S2: Based on the determined expansion scope, determine the size and quantity of individual filling devices, as well as the layout and quantity of pile foundations, and carry out construction using the construction methods described above for the filling devices.

[0065] Expansion methods include:

[0066] Method 1: Construction will proceed from coastline A along direction ① to complete the expansion area; direction ① refers to the direction away from coastline A.

[0067] Method 2: Construct along the boundary line of the expansion area, i.e., direction ②, from intersection C to form embankment B;

[0068] Method 3: Construction will proceed from dike B along direction ③ to complete the expansion area. Direction ③ is the direction away from the dike.

[0069] During expansion, one or a combination of methods one to three can be selected for construction. When construction is carried out simultaneously in three directions ①, ②, and ③, it is a faster expansion method.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A reclamation device for land reclamation, characterized in that: It includes a bottom support component, a connecting piece, and a precast foundation platform. The bottom support component includes a pile foundation. The bottom of the pile foundation is located in the seabed, and the height H of the upper end of the bottom support component is greater than the high tide level of the sea water. The foundation platform includes a precast frame. Diagonal connecting reinforced concrete beams are provided in the precast frame. The upper end of the bottom support component is fixed to the connecting piece, and the connecting piece is fixed to the precast frame; The frame is quadrilateral. At least connection holes are provided at the four corners of the precast frame. The connecting piece is a columnar structure that fits the connection holes. The connecting piece passes through the connection holes and is fixed with a hoop; The frame is formed by casting reinforced concrete. The frame includes 4 side beams with a length of 3 m - 7 m and 2 diagonally connected reinforced concrete beams. The cross-sectional width of the side beams and the diagonally connected beams is 400 mm - 800 mm, and the height is 400 mm - 800 mm. The cross-section of the connection hole is a square with a side length of 300 mm - 600 mm or a circle with a diameter of 300 mm - 600 mm. The diameter of the pile foundation is 300mm - 1000mm; When the spacing between the pile foundations is 7 m < L < 10 m, at the points 1000 mm - 2000 mm directly below the center point of the frame at the four corners of the frame, reinforced concrete columns with a cross-section length of 200 mm - 500 mm and a width of 200 mm - 500 mm are obliquely connected to form a precast member; When the spacing between the pile foundations is 10 m < L, at the points 1000 mm - 2000mm directly below the center point of the frame at the four corners of the frame, reinforced concrete columns with a cross-section length of 200 mm - 500 mm and a width of 200 mm - 500 mm are obliquely connected. At the connection points, reinforced concrete columns with the same cross-section size extend vertically upward to the plane of the hollow frame, and the columns extend vertically downward by 1000mm - 2000 mm to form a precast member; A hollow sleeve with a height of 500 mm - 1500 mm is reserved at the top of the pile foundation. The connecting piece includes a precast column. The cross-section of the precast column is the same as the cross-section of the hollow sleeve. The precast column is inserted into the hollow sleeve and fixed; or a sleeve with a height of 500mm - 1500 mm, an outer cross-section length of 400 mm - 1000 mm, and a width of 400 mm - 1000 mm is provided at the bottom of the precast column. The inner cross-section is the same as the cross-section of the pile foundation, and the top of the pile foundation is fixed to the sleeve; The precast column passes through the connection hole and is fixed with a hoop. The bottom of the obliquely connected reinforced concrete column is fixed to the top of the pile foundation or fixed to the top of the pile foundation through the precast column.

2. A basic structure for rapid expansion of marine areas, comprising the reclamation device as described in claim 1, characterized in that: It includes multiple filling devices. One to several reinforced concrete connection structures are precast at the upper part of the side where the frame needs to be connected. Adjacent filling devices are connected by one to several steel fixing plates. The steel fixing plates are connected to the reinforced concrete connection structures. The gaps between adjacent reinforced concrete connection structures are covered with steel plates with a thickness of 40 mm - 100 mm. Steel plates with a thickness of 30mm - 150 mm or reinforced concrete plates with a thickness of 100 mm - 200 mm are arranged on the plane of the frame.

3. A construction method for the rapid expansion foundation structure in the sea area according to claim 2, characterized in that: S1: Conduct a survey to determine the scope of the expansion; S2: Based on the defined expansion area, determine the size and quantity of individual filling devices, as well as the location and quantity of pile foundations, and carry out construction, including using one or a combination of the following three methods to complete the construction of the expansion area: Construction shall proceed from the coastline in a direction away from the coastline; and / or Construction will be carried out along the boundary line of the expansion area at the intersection of the coastline and the expansion area, forming a dike; and / or Construction will proceed in a direction away from the dike.

4. The construction method for a rapid expansion foundation structure in a marine area according to claim 3, characterized in that: The construction of the filling device in step S2 includes the following steps: (1) Drive the piles into the seabed bearing layer according to the predetermined pile spacing; (2) Hoist the precast column to the designated position and connect and fix the lower end of the precast column to the top of the pile foundation; (3) Hoist the precast components to the designated position and fix the precast columns in the connection holes or at the bottom of the inclined reinforced concrete columns; (4) Lay steel plates or reinforced concrete slabs on the surface of the frame, connect adjacent filling devices with reinforced concrete connecting structures, and lay steel plates in the gaps between adjacent filling devices. (5) Concrete is poured or building materials are filled into the steel plate or concrete slab on the surface of the frame to form the foundation structure of the island and reef.

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