CN220813936U - Marine combined concrete bearing platform permanent form splicing seam connection structure - Google Patents

Abstract

The utility model relates to a splicing seam connection structure of a permanent formwork of an offshore combined concrete bearing platform, which comprises an UHPC integral bottom plate and an UHPC integral vertical ring arranged above the UHPC integral bottom plate, wherein the UHPC integral bottom plate is connected with the UHPC integral vertical ring through a vertical bottom plate connection structure, the UPHC integral bottom plate is formed by splicing a plurality of split UHPC bottom plates, adjacent split UHPC bottom plates are connected through a bottom plate connection structure, the UHPC integral vertical ring is formed by splicing a plurality of split UHPC vertical rings, and the adjacent split UHPC vertical rings are connected through a vertical ring connection structure. The utility model has simple structure and reasonable design, improves the seawater permeability resistance and the waterproof performance of the spliced seam of the permanent formwork through the splicing connection and the waterproof structure of the UHPC integral bottom plate and the UHPC integral vertical ring formwork, improves the durability of the combined concrete bearing platform, reduces the influence of complex sea conditions and climates on construction operation, improves the construction safety, reduces the construction difficulty and improves the construction efficiency.

Description

Marine combined concrete bearing platform permanent form splicing seam connection structure

Technical Field

The utility model relates to a splicing seam connecting structure of a permanent formwork of an offshore combined concrete bearing platform.

Background

The development and utilization of the offshore wind energy in China are late, but the development is rapid, the development is mainly focused on offshore shallow sea areas, and the fixed offshore wind power project is a main form of the current offshore wind energy development and utilization due to various factors such as manufacturing, installation, operation and maintenance costs and the like. The foundation platform is an important device for a fixed offshore wind power project, and mainly adopts a reinforced concrete high pile cap foundation form. The high pile cap foundation is derived from an offshore independent pier foundation and a bridge pier foundation structure of a cross-sea bridge, and the foundation of the table top consists of a plurality of small-diameter foundation piles driven into foundation soil, so that the high pile cap foundation is widely applied to early-stage offshore wind farms in China. However, since offshore construction and installation are affected by complex marine construction environments such as season and climate, it is an important development trend to realize efficient construction and installation of fixed foundation platforms.

The existing concrete vertical permanent formwork is generally connected and fixed by adopting a bracket upright post for supporting and fixing, is connected through a horizontal pull rod, comprises a sweeping rod, a horizontal pull rod, a scissor support and the like, and is provided with a temporary fixing facility for effectively overturning in the installation process. The column support is divided into a wood column support and a steel tube column support according to the material types. The bottom of the upright post is provided with a cushion block, and the top of the upright post is provided with a supporting head and an adjustable bracket. The floor sweeping rod, the horizontal pull rod and the scissor brace of the wood upright post are firmly nailed with the wood upright post by adopting 40mm multiplied by 50mm wood strips or 25mm multiplied by 80mm wood strips. The floor sweeping rod, the horizontal pull rod and the scissor brace of the steel pipe column are steel pipes with phi 48mm multiplied by 3.5mm, and are fastened with the steel pipe column by fasteners. The wooden floor sweeping rod, the horizontal pull rod and the scissor brace are lapped and nailed by iron nails. The steel pipe sweeping rod and the horizontal pull rod are in butt joint, the scissor support is in lap joint, the lap joint length is not smaller than 500mm, and the steel pipe sweeping rod and the horizontal pull rod are fixed at positions which are not smaller than 100mm away from the rod end respectively by adopting 2 rotary fasteners. The existing concrete permanent formwork waterproof measures include paving asphalt waterproof materials at the interface, paving rubber water stop strips, smearing cement paste with additive with coagulation promoting and compacting effects on cement, and the like. The existing concrete bearing platform has the following defects:

(1) The traditional fixed connection form has the advantages of large material consumption, large workload, long construction period and low efficacy.

The construction of the offshore wind power fixed high pile cap foundation is affected by seasons and weather, and the construction window period is limited. The existing concrete permanent formwork connecting and fixing mode adopting the support upright post for supporting and fixing and connecting through the horizontal pull rod requires a large number of upright post supporting, horizontal pull rods, sweeping rods and shear supporting components, so that the material consumption is high, a large number of labor force is required for installation and construction on site, the working procedures are many and complicated, the formwork construction workload is large, the construction period is long, and the construction work efficiency is low. The conventional fixing and connecting form is not suitable for the construction of the offshore platform.

(2) The traditional fixed connection form has high cost and poor durability.

The traditional permanent formwork fixed connection mode consumes a large number of upright post supports, horizontal pull rods, sweeping rods and shear support members, and the materials are difficult to recycle and recycle at sea, if the fixed and connected members are permanent measures, the one-time construction investment cost of the formwork construction is higher. In addition, if a large amount of wood or steel is used for these connecting and fixing members, the wood will be reduced in strength when it encounters water, and the steel will be rusted by seawater, and the durability will be poor.

(3) The existing part of permanent template waterproof measures are not suitable for offshore construction.

If asphalt waterproof materials are paved at the permanent template interface or cement paste with an additive with coagulation promoting and compaction effects on cement is smeared for performing waterproof measures at the template interface, site construction is required after the template is assembled, thus the offshore construction time is increased, the template construction workload is large, the construction period is long, and the construction work efficiency is low.

Disclosure of utility model

In order to solve the problems, the utility model provides a joint connection structure of a permanent formwork of an offshore combined concrete bearing platform.

The UHPC integral vertical ring is formed by splicing a plurality of split UHPC bottom plates, adjacent split UHPC bottom plates are connected through a bottom plate connecting structure, the UHPC integral vertical ring is formed by splicing a plurality of split UHPC vertical rings, and adjacent split UHPC vertical rings are connected through a vertical ring connecting structure.

Further, the vertical bottom plate connecting structure comprises a plurality of vertical ring connecting pieces which are arranged at the lower part of the inner wall of the UHPC integral vertical ring at intervals, the vertical ring connecting pieces are connected with the UHPC integral bottom plate through bottom plate bolts, vertical ring grooves are formed in the bottom surface of the UHPC integral vertical ring, and bottom plate ring protrusions matched with the vertical ring grooves are arranged on the periphery of the UHPC integral bottom plate.

Further, the vertical ring connecting piece comprises a trapezoid body and a rectangular body which are arranged from top to bottom, wherein a plurality of steel bar holes are formed in the trapezoid body from top to bottom, and through holes for the base plate bolts to penetrate are formed in the rectangular body.

Further, the bottom plate connection structure is including setting up in the bottom plate wedge key tooth of one segmentation UHPC bottom plate lateral part, and another segmentation UHPC bottom plate corresponds one side be equipped with be used for with bottom plate wedge key tooth matched with bottom plate wedge recess for form the bottom plate splice joint of adjacent segmentation UHPC bottom plate, the position that two adjacent segmentation UHPC bottom plates are close to this bottom plate splice joint all is equipped with bottom plate horizontal connection built-in parts, bottom plate horizontal connection built-in parts is including being located the exposed embedded steel sheet of segmentation UHPC bottom plate upper and lower surface respectively, is connected through the bottom plate shear force spare between two exposed embedded steel sheets, all is provided with the bottom plate connection steel sheet between two exposed embedded steel sheets of being located the top of adjacent segmentation UHPC bottom plate, installs the bottom plate connection steel sheet below of exposing the embedded steel sheet and is provided with Y type roof beam.

Further, the upper and lower surfaces of the two side edges of the split UHPC bottom plate are provided with bottom plate grooves, and the upper and lower exposed embedded steel plates are respectively arranged in the bottom plate grooves.

Further, the vertical ring connection structure comprises vertical ring key teeth arranged on the side part of a vertical ring of one split UHPC, a vertical ring groove matched with the vertical ring key teeth is formed in one side of the vertical ring of the other split UHPC and used for forming a vertical ring splicing seam of the vertical ring of the adjacent split UHPC, annular embedded parts are arranged between the front and rear parts of the vertical rings of the two adjacent splits UHPC close to the vertical ring splicing seam, each annular embedded part comprises vertical ring embedded steel plates arranged in the front and rear of the vertical rings of the same split UHPC, vertical ring shearing parts are arranged between the two vertical ring embedded steel plates, vertical ring welding steel plates are arranged between the vertical ring embedded steel plates on the same side of the vertical rings of the adjacent splits UHPC, and concrete protection layers are further arranged outside the vertical ring welding steel plates on the outer sides of the vertical rings of the adjacent splits UHPC.

Furthermore, vertical ring grooves are formed in the inner side and the outer side of the two side edges of the split UHPC vertical ring, and the annular embedded part is located in the vertical ring grooves.

Further, a reserved hole is formed in the UHPC integral bottom plate.

Further, a vertical water stop between the vertical rings is arranged at the joint of the vertical rings.

Further, annular water stops are arranged at annular convex parts of the split UHPC bottom plates, vertical water stops between the bottom plates are arranged at bottom plate splicing joints between adjacent split UHPC bottom plates, and groove water stops between the bottom plates are arranged in bottom plate wedge-shaped grooves of the split UHPC bottom plates.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The adjacent split UHPC vertical rings of the device are matched together through the structures of the vertical ring grooves and the vertical ring key teeth, and are fixed through welding vertical ring embedded steel plates on the inner surface and the outer surface of the vertical ring joint, so that the split UHPC vertical rings are mutually supported, connected and fixed; adjacent split UHPC bottom plates are matched together through the structures of the bottom plate wedge-shaped key teeth and the bottom plate wedge-shaped grooves, and the bottom plates are welded on the upper surface and the lower surface of the bottom plate splicing seam to be fixed through connecting steel plates; in the UHPC permanent template of the device, a vertical ring connecting piece is reserved at the bottom of an UHPC integral vertical ring and used as a support connected with an UHPC integral bottom plate, bottom plate bolts are arranged at the edge of the UHPC integral bottom plate and welded with the vertical ring connecting piece of the UHPC integral vertical ring, so that the UHPC integral vertical ring and the UHPC integral bottom plate are connected; compared with the traditional method, the method reduces a large number of upright post supports, horizontal pull rods, sweeping rods and members of shear struts, reduces a large number of construction loads, reduces construction period and improves construction work efficiency; (2) The invention reduces the use of a large number of upright post supports, horizontal pull rods, sweeping rods and members of the shear support, and obviously reduces the one-time construction cost of the template construction. Meanwhile, the use of steel is greatly reduced, the later maintenance of the steel is reduced, the cost is reduced, and the durability is relatively improved; (3) According to the invention, the waterproof measure of paving the rubber water stop at the interface of the permanent formwork is adopted, the rubber water stop can be paved and fixed after the UHPC formwork of a land factory is poured, formed and maintained, the offshore construction time is not occupied, the construction efficiency is improved, meanwhile, the rubber water stop has the characteristics of high tensile strength, high elasticity and elongation, good cohesiveness, water resistance, weather resistance and the like, can be used for cooling, has a longer service life, and is particularly suitable for an offshore construction environment; (4) The invention can improve the seawater permeability resistance and the waterproof performance of the spliced seam of the permanent formwork, improve the durability of the combined concrete bearing platform, lighten the influence of complex sea conditions and climates on construction operation, improve the construction safety, reduce the construction difficulty, improve the construction efficiency, and can improve the comprehensive economic benefit of the bearing platform.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a UHPC template after assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram II of the overall structure of a UHPC template after assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a split UHPC vertical ring structure in an embodiment of the utility model;

FIG. 4 is a schematic diagram of a bottom plate structure of a sliced UHPC in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic view of a vertical ring connection structure according to an embodiment of the present utility model;

FIG. 6 is a second schematic view of a vertical ring connection structure according to an embodiment of the present utility model;

FIG. 7 is a third schematic view of a vertical ring connection structure according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a vertical water stop of an adjacent split UHPC vertical ring in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic diagram of a vertical base plate connection structure between an integral vertical ring of the UHPC and an integral base plate of the UHPC according to the embodiment of the utility model;

fig. 10 is a schematic view of a circumferential water stop of an integral bottom plate of a UHPC according to an embodiment of the utility model.

FIG. 11 is a schematic diagram of a first board connection structure of an adjacent split UHPC board according to an embodiment of the present utility model;

FIG. 12 is a schematic diagram II of a base plate connection structure of an adjacent split UHPC base plate according to an embodiment of the present utility model;

FIG. 13 is a schematic diagram III of a bottom plate connection structure of an adjacent split UHPC bottom plate according to an embodiment of the present utility model;

FIG. 14 is a schematic view of a water stop structure of a split UHPC base plate according to an embodiment of the present utility model;

FIG. 15 is a schematic diagram of the overall vertical ring structure of the UHPC in accordance with the present utility model;

FIG. 16 is a schematic diagram of the overall bottom board of a UHPC in accordance with an embodiment of the present utility model;

FIG. 17 is a schematic diagram of a UHPC overall backplane structure in accordance with an embodiment of the present utility model;

In the figure: the UHPC vertical ring comprises a 1-piece UHPC vertical ring, a 1 a-vertical ring connecting piece, a 1 b-vertical ring groove, a 1 c-steel bar hole, a 1 d-annular embedded piece, a 1 e-vertical ring welding steel plate, a 1 f-vertical ring key tooth, a 1 g-vertical ring groove, a 1 h-vertical ring embedded steel plate and a 1 k-vertical ring shearing piece; 2-split UHPC bottom plate, 2 a-bottom plate bolts; 2 b-floor annular bulge; 2 c-bottom plate wedge key teeth, 2 d-bottom plate wedge grooves, 2 e-bottom plate connecting steel plates, 2 f-bottom plate horizontally connecting embedded parts, 2 g-reserved holes, 2 h-exposed embedded steel plates, 2 k-bottom plate shearing parts, 3-Y-shaped beams, 4-vertical inter-ring vertical water stops, 5 a-vertical inter-bottom plate vertical water stops, 5 b-inter-bottom plate groove water stops and 6-ring-direction water stops.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the detailed description.

Examples: as shown in fig. 1-17, there is provided a joint connection structure of a permanent formwork of an offshore combined concrete cap, which comprises an integral bottom plate of UHPC and an integral vertical ring of UHPC arranged above the integral bottom plate of UHPC, wherein the integral bottom plate of UHPC is connected with the integral vertical ring of UHPC through a vertical bottom plate connection structure, the integral bottom plate of UPHC is formed by splicing a plurality of split UHPC bottom plates 2, adjacent split UHPC bottom plates 1 are connected through a bottom plate connection structure, the integral vertical ring 1 of UHPC is formed by splicing a plurality of split UHPC vertical rings, and the adjacent split UHPC vertical rings are connected through a vertical ring connection structure.

In this embodiment, the vertical bottom plate connection structure includes a plurality of vertical ring connectors 1a that are disposed at intervals in the lower part of the inner wall of the UHPC integral vertical ring, the vertical ring connectors are connected with the UHPC integral bottom plate by adopting bottom plate bolts 2a, the bottom surface of the UHPC integral vertical ring is provided with a vertical ring groove 1b, and the peripheral part of the UHPC integral bottom plate is provided with a bottom plate ring protrusion 2b for being matched with the vertical ring groove.

The vertical ring connecting piece comprises a trapezoid body and a rectangular body, wherein the trapezoid body is arranged from top to bottom, a plurality of steel bar holes 1c are formed in the trapezoid body from top to bottom, and through holes for penetrating through bottom plate bolts are formed in the rectangular body.

The bottom plate bolt can be pre-buried on the UHPC integral bottom plate, and after passing through the through hole of the vertical ring connecting piece, the bottom plate bolt is locked by a nut or is directly welded with the vertical ring connecting piece.

In this embodiment, the bottom plate connection structure includes a bottom plate wedge-shaped key tooth 2c disposed at a side portion of a bottom plate of one of the split UHPC, and a bottom plate wedge-shaped groove 2d for matching with the bottom plate wedge-shaped key tooth is disposed at a corresponding side of the bottom plate of the other split UHPC, so as to form a bottom plate splice seam of the adjacent split UHPC bottom plate, and a circumferential connection and waterproof structure between vertical rings of the split UHPC are formed at the bottom plate splice seam;

The positions of the adjacent two split UHPC bottom plates close to the bottom plate splicing seam are respectively provided with a bottom plate horizontal connection embedded part 2f, the bottom plate horizontal connection embedded part comprises exposed embedded steel plates 2h respectively positioned on the upper surface and the lower surface of the split UHPC bottom plate, the two exposed embedded steel plates are connected through a bottom plate shearing part 2k, a bottom plate connection steel plate 2e is arranged between the two exposed embedded steel plates positioned above the adjacent split UHPC bottom plates and between the two exposed embedded steel plates positioned below the adjacent split UHPC bottom plates; it should be noted here that two exposed pre-buried steel plates on the lower surface can be welded directly to the Y-beam.

The bottom plate horizontal connection embedded part can have better bonding performance with the internal pouring UHPC, and the node integrity is improved.

When the UHPC integral bottom plate is spliced by three split UHPC bottom plates, a Y-shaped beam 3 is arranged below a bottom plate connecting steel plate arranged on the lower exposed embedded steel plate; the Y-shaped beam is composed of a plurality of beam bodies, and each beam body corresponds to the position of a bottom plate splicing seam.

The upper surface and the lower surface of the two side edges of the split UHPC bottom plate are provided with bottom plate grooves, and the upper exposed embedded steel plates and the lower exposed embedded steel plates are respectively arranged in the bottom plate grooves.

In the embodiment, the vertical ring connecting structure comprises vertical ring key teeth 1f arranged at the side part of a vertical ring of one split UHPC, and a vertical ring groove 1g matched with the vertical ring key teeth is arranged at the corresponding side of the vertical ring of the other split UHPC, so as to form a vertical ring splicing seam of the vertical rings of the adjacent split UHPC, and the vertical ring splicing seam forms a connecting and waterproof structure between the split UHPC bottom plates;

The annular embedded parts 1d are arranged between the front and rear faces of two adjacent split UHPC vertical rings close to the vertical ring splicing seam, each annular embedded part comprises two vertical ring embedded steel plates 1h arranged in front of and behind the same split UHPC vertical ring, a vertical ring shear force part 1k is arranged between the two vertical ring embedded steel plates, and a vertical ring welding steel plate 1e is arranged between the vertical ring embedded steel plates on the same face of the adjacent split UHPC vertical ring.

Because the welding steel plate at the outer side of the vertical ring is easy to corrode in a complex marine environment, a concrete protection layer with a certain thickness is required to be arranged, the joint of the nodes is designed into a variable cross section mode, and the concrete protection layer is also arranged at the outer part of the welding steel plate of the vertical ring positioned at the outer side of the vertical ring of the UHPC vertical ring of the adjacent split.

In the embodiment, vertical ring grooves are formed in the inner side and the outer side of the two side edges of the split UHPC vertical ring, and the annular embedded part is located in the vertical ring grooves.

In this embodiment, a reserved hole 2g is provided on the UHPC integral base plate; the reserved holes are circular, the cross section diameter of the reserved holes is 400-450 mm wider than the diameter of the steel pipe pile, and the steel pipe pile can conveniently extend into the reserved holes.

In the embodiment, a vertical water stop 4 between vertical rings is arranged at the joint of the vertical rings.

In the embodiment, the annular water stop 6 is arranged at the annular convex part of the split UHPC bottom plate, the annular water stop is arranged along the circumference in a closed loop, and the inner layer and the outer layer are arranged, so that the water stop is ensured to cross the gap at the joint and extend for a certain length, and the water stop is ensured to be arranged so as to completely separate the inside of the permanent template from the external environment;

The bottom plate splicing seam between the adjacent split UHPC bottom plates is provided with a vertical water stop belt 5a between the bottom plates, and a groove water stop belt 5b between the bottom plates is arranged in the wedge-shaped groove of the bottom plate of the split UHPC bottom plate; the vertical water stop bottom 5a and the groove water stop 5b between the bottom plates are laid along the joint section of the bottom plates in a full length mode, and the bottom and the side surfaces of the three-part UHPC bottom plate can be completely isolated from the external environment.

The vertical water stops between the bottom plates, the groove water stops between the bottom plates, the annular water stops and the vertical water stops between the vertical rings are all rubber water stops.

In this embodiment, the construction is as follows:

Step one: the split UHPC vertical ring and the split UHPC bottom plate are prefabricated in a land prefabrication factory and transported to a land construction site close to an offshore wind farm.

Step two: the rubber water stop is paved and fixed on the vertical ring splicing seam of the split UHPC vertical ring and the split UHPC bottom plate, the bottom plate splicing seam and the bottom plate ring convex position of the split UHPC bottom plate on the land construction site;

step three: assembling a plurality of split UHPC vertical rings into an UHPC integral vertical ring through a vertical ring connecting structure on the land construction site;

Step four: assembling a plurality of split UHPC bottom plates into a UHPC integral bottom plate through a bottom plate connecting structure on the land construction site;

Step five: after the UHPC integral vertical ring is hoisted on the offshore construction site, the vertical ring groove of the UHPF integral vertical ring is matched with the bottom plate ring on the UHPC integral bottom plate in a protruding mode, and then the UHPC integral vertical ring and the UHPC integral bottom plate are connected into a whole through a vertical ring connecting piece.

In the third step, when the vertical ring connecting structure is connected, the vertical ring key teeth on the side part of the vertical ring of one split UHPC are matched with the vertical ring grooves on the side part of the vertical ring of the other split UHPC, the front and rear annular embedded parts of the vertical rings of the adjacent splits UHPC are also spliced together, the two front vertical ring embedded steel plates and the two rear vertical ring embedded steel plates of the vertical rings of the adjacent splits UHPC are welded, and meanwhile, the concrete protection layer is added outside the vertical ring welded steel plates.

In the fourth step, when the bottom plate connecting structure is connected, the bottom plate wedge-shaped key teeth at the side part of one of the split UHPC bottom plates are matched with the bottom plate wedge-shaped groove of the other split UHPC bottom plate, the bottom plate horizontal connecting embedded parts are embedded in the upper surface and the lower surface of the edge of the split UHPC bottom plate, the exposed embedded steel plates of the upper surface and the lower surface of the horizontal connecting embedded parts of the adjacent split UHPC bottom plates are respectively spliced together, and the adjacent split UHPC bottom plates are connected by respectively welding the bottom plate connecting steel plates on the surfaces of the adjacent two upper exposed embedded steel plates and the surfaces of the two lower exposed embedded steel plates.

Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.

If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.

Meanwhile, if the above utility model discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (10)

1. The utility model provides an offshore combination concrete cushion cap permanent template splice joint connection structure, its characterized in that includes the whole bottom plate of UHPC and sets up the whole vertical ring of UHPC in the whole bottom plate top of UHPC, connect through vertical bottom plate connection structure between the whole vertical ring of UHPC and the whole bottom plate of UHPC, UPHC whole bottom plate is formed by the concatenation of a plurality of burst UHPC bottom plates, connects through bottom plate connection structure between the adjacent burst UHPC bottom plate, the whole vertical ring of UHPC is formed by the concatenation of a plurality of burst UHPC vertical ring, connects through vertical ring connection structure between the adjacent burst UHPC vertical ring.

2. The marine composite concrete cap permanent formwork splice joint connection structure according to claim 1, wherein the vertical base plate connection structure comprises a plurality of vertical ring connection pieces which are arranged at intervals on the lower part of the inner wall of the UHPC integral vertical ring, the vertical ring connection pieces are connected with the UHPC integral base plate through base plate bolts, a vertical ring groove is arranged on the bottom surface of the UHPC integral vertical ring, and a base plate ring protrusion which is matched with the vertical ring groove is arranged on the outer periphery of the UHPC integral base plate.

3. The offshore composite concrete cap permanent formwork splice joint connection structure of claim 2, wherein the vertical ring connector comprises a trapezoid body and a rectangular body which are arranged from top to bottom, the trapezoid body is provided with a plurality of steel bar openings from top to bottom, and the rectangular body is provided with through holes for a bottom plate bolt to penetrate.

4. The marine combined concrete cap permanent formwork splicing seam connection structure according to claim 1, wherein the bottom plate connection structure comprises bottom plate wedge-shaped key teeth arranged on the side part of a bottom plate of one split UHPC, bottom plate wedge-shaped grooves matched with the bottom plate wedge-shaped key teeth are formed on the corresponding side of the other split UHPC bottom plate and used for forming a bottom plate splicing seam of the adjacent split UHPC bottom plate, bottom plate horizontal connection embedded parts are arranged at positions, close to the bottom plate splicing seam, of the adjacent two split UHPC bottom plates, each bottom plate horizontal connection embedded part comprises exposed embedded steel plates respectively positioned on the upper surface and the lower surface of the split UHPC bottom plate, the two exposed embedded steel plates are connected through the bottom plate shearing piece, a bottom plate connection steel plate is arranged between the two exposed embedded steel plates positioned above the adjacent split UHPC bottom plate, a bottom plate connection steel plate is arranged between the two exposed embedded steel plates positioned below the adjacent split UHPC bottom plate, and Y-shaped beams are arranged below the bottom plate connection steel plates arranged below the lower exposed embedded steel plates.

5. The construction of claim 4, wherein the upper and lower surfaces of the two side edges of the split UHPC base plate are provided with base plate grooves, and the upper and lower exposed embedded steel plates are respectively arranged in the base plate grooves.

6. The marine combined concrete cap permanent formwork splice joint connection structure according to claim 1, wherein the vertical ring connection structure comprises vertical ring key teeth arranged at the side part of a vertical ring of one split UHPC, a vertical ring groove matched with the vertical ring key teeth is formed at one corresponding side of the vertical ring of the other split UHPC, a vertical ring splice joint of the vertical ring of the adjacent split UHPC is formed, annular embedded parts are arranged between the front and rear surfaces of the vertical rings of the two adjacent split UHPC close to the vertical ring splice joint, each annular embedded part comprises vertical ring embedded steel plates arranged in front of and behind the vertical rings of the same split UHPC, a vertical ring shear part is arranged between the two vertical ring embedded steel plates, a vertical ring welding steel plate is arranged between the vertical ring embedded steel plates of the same surface of the vertical ring of the adjacent split UHPC, and a concrete protection layer is arranged outside the vertical ring welding steel plates of the outer side surfaces of the vertical rings of the adjacent split UHPC.

7. The construction of claim 6, wherein the split UHPC vertical rings are provided with vertical ring grooves on the inner and outer sides, and the circumferential embedded parts are positioned in the vertical ring grooves.

8. The marine composite concrete cap permanent formwork splice joint connection structure of claim 1, wherein the UHPC integral base plate is provided with a preformed hole.

9. The offshore composite concrete cap permanent formwork splice joint connection structure of claim 6, wherein vertical inter-vertical water stops are provided at the vertical ring splice joint.

10. The marine composite concrete cap permanent formwork splice joint connection structure of claim 4, wherein annular water stops are arranged at annular protrusions of the split UHPC bottom plates, vertical water stops between bottom plates are arranged at bottom plate splice joints between adjacent split UHPC bottom plates, and groove water stops between bottom plates are arranged in bottom plate wedge grooves of the split UHPC bottom plates.