CN116905545A - Marine concrete bearing platform template splicing seam connection and waterproof structure and construction method thereof - Google Patents

Abstract

The invention relates to a marine concrete bearing platform template splice joint connection and waterproof structure, 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 invention 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

Seam connection and waterproof structure of offshore concrete cap formwork and its construction method

Technical field

The invention relates to an offshore concrete cap formwork joint connection and waterproof structure and a construction method thereof.

Background technique

The development and utilization of offshore wind energy in my country started late, but it has developed rapidly. It is currently mainly concentrated in shallow offshore areas. Among them, fixed offshore wind power projects are currently the main form of offshore wind energy development and utilization due to various factors such as manufacturing, installation, operation and maintenance costs. The foundation platform is an important equipment for fixed offshore wind power projects, and it mainly adopts the form of reinforced concrete high pile cap foundation. The high pile cap foundation is derived from offshore independent pier foundations and cross-sea bridge pier foundation structures. The foundation of the platform consists of several small-diameter foundation piles driven into the foundation soil. It was widely used in my country's early offshore wind fields. However, because offshore construction and installation are affected by complex marine construction environments such as seasonal climate, achieving efficient construction and installation of fixed foundation caps is an important development trend.

The connection and fixation of existing concrete vertical permanent formwork is generally supported and fixed by bracket columns and connected through horizontal tie rods, including sweeping rods, horizontal tie rods, scissor braces, etc. During the installation process of bracket columns, temporary fixing facilities that can effectively overturn must be set up. . Column supports are divided into wooden column supports and steel pipe column supports according to material categories. The bottom of the column is equipped with a pad and the top is equipped with a support head or adjustable support. The sweeping rods, horizontal tie rods, and scissor braces of the wooden posts should be nailed to the wooden posts using 40mm×50mm wooden slats or 25mm×80mm wooden slats. The sweeping rod, horizontal tie rod and scissor support of the steel pipe column are made of φ48mm×3.5mm steel pipe, and fastened to the steel pipe column with fasteners. Wooden sweeping poles, horizontal tie rods, and scissor supports should be overlapped and nailed with iron nails. The steel pipe sweeping rod and horizontal tie rod should be butt jointed, and the scissor brace should be overlapped. The overlap length should not be less than 500mm, and two rotating fasteners should be used to fix it at a distance of not less than 100mm from the rod end. Existing waterproofing measures for concrete permanent formwork include laying asphalt waterproofing materials at the interface, laying rubber water-stop strips, and applying cement slurry that has an accelerating and compacting effect on cement. The disadvantages of existing concrete caps are as follows:

(1) The traditional fixed connection form requires large consumables, heavy workload, long construction period, and low efficiency.

The construction of offshore wind power fixed high pile cap foundations is affected by seasons and climate, and the construction window period is limited. The existing concrete permanent formwork connection and fixation method uses brackets and columns to support and fix, and is connected through horizontal tie rods. This requires a large number of column supports, horizontal tie rods, sweeping rods and shear braces. It not only consumes a lot of materials, but also requires a lot of labor on site. There are many and complicated procedures for installation and construction, resulting in a heavy workload for formwork construction, a long construction period, and low construction efficiency. Therefore, traditional fixing and connection forms are not suitable for offshore cap construction.

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

The traditional fixed connection form of permanent formwork consumes a large amount of components such as column supports, horizontal tie rods, sweeping rods and shear braces, and these materials are difficult to reuse and recycle at sea. If the fixing and connection components are permanent measures, the formwork construction will be one-time Construction investment costs will be higher. In addition, if a large amount of wood or steel is used in these connecting and fixed components, the strength of the wood will be reduced when exposed to water, while the steel will be corroded by seawater and have poor durability.

(3) Some existing permanent formwork waterproofing measures are not suitable for offshore construction.

If asphalt waterproofing materials are laid at the interface of the permanent formwork or cement slurry that has an accelerating and compacting effect on cement is applied to waterproof the interface of the formwork, on-site construction must be carried out after the formwork is assembled, which increases the offshore construction time and causes the formwork construction work The quantity is large, the construction period is long, and the construction efficiency is low.

Contents of the invention

In order to solve the above problems, the present invention provides an offshore concrete cap formwork joint connection and waterproof structure and a construction method thereof.

The present invention is composed of a UHPC integral base plate and a UHPC integral vertical ring arranged above the UHPC integral base plate. The UHPC integral base plate and the UHPC integral vertical ring are connected through a vertical base plate connection structure. The UPHC integral base plate is composed of Multiple segmented UHPC base plates are spliced together. Adjacent segmented UHPC base plates are connected through a base plate connection structure. The UHPC overall vertical ring is made up of multiple segmented UHPC vertical rings. The adjacent segmented UHPC vertical rings are spliced together. The rings are connected through vertical ring connection structures.

Further, the vertical bottom plate connection structure includes a plurality of vertical ring connectors arranged at intervals on the lower part of the inner wall of the UHPC integral vertical ring. The vertical ring connectors and the UHPC integral bottom plate are connected by bottom plate bolts. The UHPC integral vertical ring The bottom surface is provided with a vertical ring groove, and the outer peripheral portion of the UHPC integral bottom plate is provided with a bottom plate ring protrusion for matching with the vertical ring groove.

Further, the vertical ring connector includes a trapezoidal body and a rectangular body arranged from top to bottom. The trapezoidal body is provided with a plurality of steel bar openings from top to bottom. The rectangular body is provided with through holes for the bottom plate bolts to pass through. hole.

Further, the base plate connection structure includes a base plate wedge-shaped key tooth provided on the side of one of the segmented UHPC base plates, and the corresponding side of the other segmented UHPC base plate is provided with a base plate wedge-shaped groove to match the base plate wedge-shaped key teeth. , used to form the bottom panel splicing seam of adjacent segmented UHPC bottom panels. The two adjacent segmented UHPC bottom panels are equipped with bottom panel horizontal connection embedded parts near the bottom panel splicing seam. The bottom panel horizontal connection is embedded. The components include exposed embedded steel plates located on the lower and lower surfaces of the segmented UHPC base plates. The two exposed embedded steel plates are connected by base plate shear members. The two exposed embedded steel plates on the adjacent segmented UHPC base plates are located above. There is a base plate connecting steel plate installed between the two adjacent segmented UHPC base plates and between the two lower exposed embedded steel plates. A Y-shaped beam is provided below the base plate connecting steel plate installed on the lower exposed embedded steel plate.

Furthermore, the upper and lower surfaces of the edge of both sides of the segmented UHPC base plate are provided with base plate slots, and the upper and lower exposed embedded steel plates are respectively arranged inside the base plate slots.

Further, the vertical ring connection structure includes vertical ring key teeth arranged on the side of one of the UHPC vertical ring segments, and the corresponding side of the other segmented UHPC vertical ring is provided with a vertical ring concave to match the vertical ring key teeth. The groove is used to form the vertical ring splicing seam of adjacent segmented UHPC vertical rings. The two adjacent segmented UHPC vertical rings are equipped with circumferential embedded parts between the front and back of the vertical ring splicing seam. , the annular embedded parts include vertical ring embedded steel plates arranged in front and behind the same segmented UHPC vertical ring. A vertical ring shear member is provided between the two vertical ring embedded steel plates. The adjacent segmented UHPC vertical rings Vertical ring welded steel plates are provided between the vertical ring embedded steel plates on the same side of the ring. The vertical ring welded steel plates located on the outer sides of adjacent segmented UHPC vertical rings are also provided with a concrete protective layer on the outside.

Further, vertical ring grooves are provided on both sides of the edge of the sliced UHPC vertical ring, and the circumferential embedded parts are located in the vertical ring grooves.

Further, the UHPC integral bottom plate is provided with reserved holes.

Furthermore, vertical waterstops between vertical rings are provided at the joints of the vertical rings.

Furthermore, a circumferential water stop is provided at the annular convex part of the segmented UHPC base plate, and a vertical water stop between the base plates is provided at the base plate joint between adjacent segmented UHPC base plates. There is a groove water stop between the bottom plates in the wedge-shaped groove.

Further, a construction method for joint connection and waterproof structure of offshore concrete cap formwork includes the following steps: (1) Prefabricate segmented UHPC vertical rings and segmented UHPC base plates in an onshore prefabrication factory, and transport them to the sea Onshore construction sites of wind farms; (2) At the above onshore construction sites, lay rubber waterstops and fix them on the vertical ring joints of the segmented UHPC vertical rings and the segmented UHPC base plates, the base plate splicing seams and the segmented UHPC The convex position of the base plate ring of the base plate; (3) At the above-mentioned onshore construction site, assemble multiple segmented UHPC vertical rings into a UHPC integral vertical ring through the vertical ring connection structure; (4) At the above-mentioned onshore construction site, assemble multiple segmented UHPC vertical rings The UHPC base plate is assembled into a UHPC integral base plate through the base plate connection structure; (5) After the UHPC integral vertical ring is hoisted at the offshore construction site, match the vertical ring groove of the UHPF integral vertical ring with the base plate ring protrusion on the UHPC integral base plate, and then Connect the UHPC integral vertical ring and the UHPC integral bottom plate into one body through the vertical ring connector.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The adjacent segmented UHPC vertical rings of this device are matched together through the structure of vertical ring grooves and vertical ring key teeth, and are carried out by welding vertical ring embedded steel plates on the inner and outer surfaces of the vertical ring joints. Fixed, so that the split UHPC vertical rings support and connect each other and are fixed; the adjacent split UHPC base plates are matched together through the structure of the base plate wedge-shaped key teeth and the base plate wedge-shaped groove. The surface welding base plate is connected to the steel plate for fixation; in the UHPC permanent template of this device, a vertical ring connector is reserved at the bottom of the UHPC integral vertical ring as a support to connect to the UHPC integral base plate. There are base plate bolts at the edge of the UHPC integral base plate. The bolts are welded to the vertical ring connectors of the UHPC integral vertical ring to connect the UHPC integral vertical ring and the UHPC integral bottom plate; compared with the traditional method, a large number of components such as column supports, horizontal tie rods, sweeping rods and shear braces are reduced. And it also reduces a large amount of construction work, reduces the construction period, and improves construction efficiency; (2) The present invention reduces the use of a large number of column supports, horizontal tie rods, sweeping rods and shear braces, significantly reducing the time required for formwork construction. one-time construction costs. At the same time, the use of steel is greatly reduced, which not only reduces the later maintenance of the steel, reduces the cost, but also relatively improves the durability; (3) The present invention adopts the waterproofing measure of laying rubber waterstops at the interface of the permanent formwork, and the rubber waterstops The belt can be laid and fixed after the UHPC formwork is poured, formed and cured in the onshore factory. It does not take up offshore construction time and improves the construction efficiency. At the same time, the rubber waterstop has high tensile strength, high elasticity and elongation, adhesion and resistance. It has the characteristics of good water resistance and weather resistance, can be used in cold conditions, has a long service life, and is especially suitable for offshore construction environments; (4) The present invention can improve the seawater permeability and waterproof performance of permanent formwork joints, and improve the combined concrete cap platform. Durability, reducing the impact of complex sea conditions and climate on construction operations, improving construction safety, reducing construction difficulty, and improving construction efficiency. All the above advantages can improve the comprehensive economic benefits of the cap.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the UHPC template after assembly according to the embodiment of the present invention;

Figure 2 is a schematic diagram of the overall structure of the UHPC template after assembly according to the embodiment of the present invention;

Figure 3 is a schematic structural diagram of a segmented UHPC vertical ring according to an embodiment of the present invention;

Figure 4 is a schematic structural diagram of a sliced UHPC backplane according to an embodiment of the present invention;

Figure 5 is a schematic diagram of the vertical ring connection structure of the embodiment of the present invention;

Figure 6 is a schematic diagram 2 of the vertical ring connection structure according to the embodiment of the present invention;

Figure 7 is a schematic diagram three of the vertical ring connection structure according to the embodiment of the present invention;

Figure 8 is a schematic diagram of the vertical waterstops of adjacent segmented UHPC vertical rings according to the embodiment of the present invention;

Figure 9 is a schematic diagram of the connection structure of the vertical bottom plate of the UHPC integrated vertical ring and the UHPC integrated bottom plate according to the embodiment of the present invention;

Figure 10 is a schematic diagram of the circumferential waterstop of the UHPC integral bottom plate according to the embodiment of the present invention.

Figure 11 is a schematic diagram of the base plate connection structure of adjacent sliced UHPC base plates according to an embodiment of the present invention;

Figure 12 is a schematic diagram 2 of the base plate connection structure of adjacent sliced UHPC base plates according to the embodiment of the present invention;

Figure 13 is a schematic diagram 3 of the base plate connection structure of adjacent sliced UHPC base plates according to the embodiment of the present invention;

Figure 14 is a schematic structural diagram of the waterstop of the sliced UHPC base plate according to the embodiment of the present invention;

Figure 15 is a schematic diagram of the overall vertical ring structure of UHPC according to the embodiment of the present invention;

Figure 16 is a schematic diagram of the UHPC overall bottom plate structure according to the embodiment of the present invention;

Figure 17 is a schematic diagram 2 of the UHPC overall bottom plate structure according to the embodiment of the present invention;

In the picture: 1-slice UHPC vertical ring, 1a-vertical ring connector, 1b-vertical ring ring groove, 1c-reinforcement opening, 1d-circular embedded parts, 1e-vertical ring welded steel plate, 1f-vertical ring Key teeth, 1g-vertical ring groove, 1h-vertical ring embedded steel plate, 1k-vertical ring shear member; 2-slice UHPC base plate, 2a-base plate bolts; 2b-base plate ring convex; 2c-base plate wedge-shaped key teeth , 2d-bottom plate wedge-shaped groove, 2e-bottom plate connecting steel plate, 2f-bottom plate horizontal connection embedded parts, 2g-reserved holes, 2h-exposed embedded steel plate, 2k-bottom plate shear components, 3-Y-shaped beam, 4 - Vertical waterstop between vertical rings, 5a - vertical waterstop between base plates, 5b - grooved waterstop between base plates, 6 - circumferential waterstop.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment: As shown in Figure 1-17, an offshore concrete cap formwork joint connection and waterproof structure is provided, including a UHPC integral bottom plate and a UHPC integral vertical ring disposed above the UHPC integral bottom plate. The UHPC integral bottom plate and The UHPC integral vertical rings are connected by a vertical base plate connection structure. The UPHC integral base plate is made up of multiple segmented UHPC base plates 2. Adjacent segmented UHPC base plates 1 are connected by a base plate connection structure. The UHPC integral base plate is connected by a base plate connection structure. The vertical ring 1 is made up of multiple segmented UHPC vertical rings, and adjacent segmented 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 spaced at the lower part of the inner wall of the UHPC integral vertical ring. The vertical ring connectors and the UHPC integral bottom plate are connected by bottom plate bolts 2a, so The bottom surface of the UHPC integral vertical ring is provided with a vertical ring groove 1b, and the outer periphery of the UHPC integral bottom plate is provided with a base plate ring protrusion 2b for matching with the vertical ring groove.

The above-mentioned vertical ring connector includes a trapezoidal body and a rectangular body arranged from top to bottom. The trapezoidal body is provided with a plurality of steel bar openings 1c from top to bottom. The rectangular body is provided with through holes for the bottom plate bolts to pass through. hole.

The above-mentioned base plate bolts can be pre-embedded in the UHPC integral base plate. After the base plate bolts pass through the through holes of the vertical ring connector, they are tightened with nuts or directly welded to the vertical ring connector.

In this embodiment, the base plate connection structure includes a base plate wedge-shaped key tooth 2c provided on the side of one of the segmented UHPC base plates, and the corresponding side of the other segmented UHPC base plate is provided with a base plate wedge-shaped key tooth to match the base plate wedge-shaped key teeth. The wedge-shaped groove 2d of the base plate is used to form the base plate splicing seam of adjacent segmented UHPC base plates, and the base plate splicing seam forms the circumferential connection and waterproof structure between the segmented UHPC vertical rings;

The two adjacent sliced UHPC base plates are equipped with base plate horizontal connection embedded parts 2f close to the base plate splicing seams. The base plate horizontal connection embedded parts include exposed pre-assembled parts located on the lower surface of the sliced UHPC base plates respectively. Embedded steel plate 2h, the two exposed embedded steel plates are connected through the base plate shear member 2k, the two adjacent segmented UHPC base plates are located between the exposed embedded steel plates above, and the two adjacent segmented UHPC base plates are There are bottom plate connecting steel plates 2e between the exposed embedded steel plates located below; it is worth mentioning here that the two exposed embedded steel plates located on the lower surface can be directly welded to the Y-shaped beam.

The above-mentioned horizontal connection embedded parts of the base plate can have good bonding performance with the internally poured UHPC, improving the integrity of the node.

When the UHPC overall base plate is spliced by three segmented UHPC base plates, a Y-shaped beam 3 is provided under the connecting steel plate of the base plate installed on the lower exposed embedded steel plate; the Y-shaped beam is composed of multiple beam bodies, and each beam body corresponds to a base plate Location of seams.

The upper and lower surfaces of the two side edges of the above-mentioned sliced UHPC base plate are provided with base plate slots, and the upper and lower exposed embedded steel plates are respectively arranged inside the base plate slots.

In this embodiment, the vertical ring connection structure includes vertical ring key teeth 1f disposed on the side of one of the segmented UHPC vertical rings, and the corresponding side of the other segmented UHPC vertical ring is provided with a key tooth 1f to match the vertical ring. The vertical ring groove 1g is used to form the vertical ring splicing seam of adjacent segmented UHPC vertical rings. The vertical ring splicing seam forms the connection and waterproof structure between the segmented UHPC bottom plates;

Two adjacent segmented UHPC vertical rings are provided with circumferential embedded parts 1d between the front and back of the vertical ring splicing seam. The annular embedded parts include two arranged in the same segmented UHPC vertical ring. The vertical ring embedded steel plates at the front and back are 1h, a vertical ring shear member 1k is set between the two vertical ring embedded steel plates, and a vertical ring shear member 1k is set between the vertical ring embedded steel plates on the same side of the adjacent segmented UHPC vertical rings. Ring welded steel plate 1e.

Since the welded steel plates on the outside of the vertical rings are susceptible to corrosion in complex marine environments, a concrete protective layer of a certain thickness needs to be installed. Therefore, the node connection is designed with a variable cross-section. Therefore, the welded steel plates on the vertical rings located on the outer sides of the adjacent segmented UHPC vertical rings There is also a concrete protective layer on the outside.

In this embodiment, vertical ring grooves are provided on both sides of the edge of the sliced UHPC vertical ring, and the circumferential embedded parts are located in the vertical ring grooves.

In this embodiment, the UHPC integral bottom plate is provided with 2g reserved holes; the reserved holes are circular, and the cross-sectional diameter of the reserved holes is 400~450mm wider than the diameter of the steel pipe pile, making it easier for the steel pipe pile to extend in.

In this embodiment, vertical waterstops 4 between vertical rings are provided at the joints of the vertical rings.

In this embodiment, a circumferential waterstop 6 is provided on the annular convex part of the segmented UHPC bottom plate. The circumferential waterstop is arranged in a closed loop along the circumference, and is arranged in two layers, the inner and outer layers. At the joint, ensure that the waterstop crosses the gap and Extend it to a certain length to ensure that the waterstop setting can completely separate the inside of the permanent formwork from the outside environment;

There is an inter-floor vertical waterstop 5a at the floor joint between adjacent tiled UHPC floorboards, and there is an inter-floor groove waterstop 5b in the bottom wedge-shaped groove of the tiled UHPC floorboard; the vertical waterstop between the floorboards is Lay the bottom 5a of the waterstop and the grooved waterstop 5b along the entire length of the joint section of the bottom plate to ensure that the bottom and sides of the three-point UHPC bottom plate can be completely isolated from the external environment.

The above-mentioned vertical waterstops between bottom plates, groove waterstops between bottom plates, circumferential waterstops, and vertical waterstops between vertical rings are all rubber waterstops.

In this embodiment, during construction:

Step 1: Prefabricate the segmented UHPC vertical ring and segmented UHPC base plate in an onshore prefabrication factory, and transport them to an onshore construction site close to the offshore wind farm.

Step 2: At the above-mentioned onshore construction site, lay the rubber waterstop and fix it on the vertical ring splicing seams of the segmented UHPC vertical rings and the segmented UHPC base plates, the splicing seams of the base plates, and the convex positions of the base plate rings of the segmented UHPC base plates;

Step 3: At the above-mentioned onshore construction site, assemble multiple segmented UHPC vertical rings into a UHPC integral vertical ring through the vertical ring connection structure;

Step 4: At the above-mentioned onshore construction site, assemble multiple segmented UHPC base plates into a UHPC integral base plate through the base plate connection structure;

Step 5: After hoisting the UHPC integral vertical ring at the offshore construction site, match the vertical ring groove of the UHPF integral vertical ring with the base plate ring convex on the UHPC integral base plate, and then connect the UHPC integral vertical ring and the UHPC integral base plate through the vertical ring The connectors are connected as one body.

In the above step three, when the vertical ring connection structure is connected, the vertical ring key teeth on the side of one UHPC vertical ring are matched with the vertical ring groove on the side of the other UHPC vertical ring. The front and rear circumferential embedded parts of the segmented UHPC vertical rings are also put together. The two vertical rings at the front of the adjacent segmented UHPC vertical rings are embedded with steel plates, and the two vertical rings at the back are embedded with steel plates. The vertical ring welded steel plate is welded on the buried steel plate, and a concrete protective layer is added to the outside of the vertical ring welded steel plate.

In the above step four, when the base plate connection structure is connected, the base plate wedge-shaped key teeth on the side of one segmented UHPC base plate are matched with the base plate wedge-shaped groove of the other segmented UHPC base plate. The upper and lower surfaces of the edge of the segmented UHPC base plate There are horizontally connected embedded parts of the base plate embedded in the floor. The exposed embedded steel plates on the upper and lower surfaces of the horizontally connected embedded parts of the adjacent segmented UHPC base plates are spliced together. The base plate connecting steel plates are welded to the two adjacent ones. There are two exposed embedded steel plate surfaces at the top, two exposed embedded steel plate surfaces at the bottom, and the bottom connecting steel plate of the lower exposed embedded steel plate is welded to the Y-shaped beam, or the lower surface of the two exposed embedded steel plates is welded together with the Y-shaped beam. The Y-beams are welded together to connect adjacent segmented UHPC base plates.

Unless otherwise stated in any of the technical solutions disclosed above, if a numerical range is disclosed, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only Among the many implementable values, the technical effect is more obvious or representative. Since there are too many numerical values to be exhaustive, the present invention only discloses some numerical values to illustrate the technical solution of the present invention. Furthermore, the numerical values listed above should not constitute a limitation on the scope of the invention.

If words such as "first" and "second" are used in this article to define components, those skilled in the art should know that the use of "first" and "second" is only for convenience in describing the components. Unless otherwise stated, the above words have no special meaning.

At the same time, if the above-mentioned invention discloses or relates to components or structural parts that are fixedly connected to each other, then, unless otherwise stated, fixed connection can be understood as: removably fixed connection (for example, using bolts or screws), or it can be It is understood as: non-detachable fixed connections (such as riveting, welding). Of course, the mutual fixed connections can also be replaced by an integrated structure (such as one-piece manufacturing using a casting process) (except for the obvious exception of the one-piece forming process).

In addition, unless otherwise stated, terms used to express positional relationships or shapes used in any of the technical solutions disclosed in the present invention include their meanings include states or shapes that are similar, similar or close to them.

Any component provided by the present invention can be assembled from multiple individual components, or it can be an individual component manufactured by an integrated forming process.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the present invention can still be modified Modifications to the specific embodiments of the invention or equivalent substitutions of some of the technical features without departing from the spirit of the technical solution of the present invention shall be covered by the scope of the technical solution claimed by the present invention.

Claims (10)

1. An offshore concrete cap formwork joint connection and waterproof structure, which is characterized in that it includes a UHPC integral bottom plate and a UHPC integral vertical ring disposed above the UHPC integral bottom plate, between the UHPC integral bottom plate and the UHPC integral vertical ring Connected through a vertical base plate connection structure, the UPHC overall base plate is made up of multiple sliced UHPC base plates. Adjacent sliced UHPC base plates are connected through a base plate connection structure. The UHPC overall vertical ring is made up of multiple sliced UHPC base plates. The vertical rings are spliced together, and adjacent segmented UHPC vertical rings are connected by a vertical ring connection structure. 2. The seam connection and waterproof structure of offshore concrete cap formwork according to claim 1, characterized in that the vertical bottom plate connection structure includes a plurality of vertical ring connectors arranged at intervals on the lower part of the inner wall of the UHPC integral vertical ring, The vertical ring connector and the UHPC integral base plate are connected by base plate bolts. The bottom surface of the UHPC integral vertical ring is provided with a vertical ring groove. The outer periphery of the UHPC integral base plate is provided with a base plate to match the vertical ring groove. Ring convex. 3. The offshore concrete cap formwork joint connection and waterproof structure according to claim 2, characterized in that the vertical ring connector includes a trapezoidal body and a rectangular body arranged from top to bottom, and the trapezoidal body is arranged from top to bottom. A plurality of steel bar openings are provided below, and the rectangular body is provided with through holes penetrated by base plate bolts. 4. The seam connection and waterproof structure of offshore concrete cap formwork according to claim 1, characterized in that the bottom plate connection structure includes bottom plate wedge-shaped key teeth provided on the side of one of the segmented UHPC bottom plates, and the other is The corresponding side of the segmented UHPC base plate is provided with a base plate wedge-shaped groove that matches the base plate wedge-shaped key teeth to form a base plate splicing seam of adjacent segmented UHPC base plates. The two adjacent segmented UHPC base plates are close to the base plate. The bottom plate horizontal connection embedded parts are provided at the positions of the bottom plate splicing seams. The bottom plate horizontal connection embedded parts include exposed embedded steel plates located on the lower surface of the segmented UHPC bottom plate. There is a gap between the two exposed embedded steel plates. The base plate shear members are connected. There are base plate connections between the two exposed embedded steel plates located above the adjacent segmented UHPC base plates and between the two exposed embedded steel plates located below the adjacent segmented UHPC base plates. The steel plate is installed on the base plate of the exposed embedded steel plate and is connected to a Y-shaped beam below the steel plate. 5. The seam connection and waterproof structure of the offshore concrete cap formwork according to claim 4, characterized in that the upper and lower surfaces of both sides of the segmented UHPC bottom plate are provided with bottom plate slots, and the upper and lower parts are exposed and embedded. The steel plates are respectively arranged inside the grooves of the bottom plate. 6. The seam connection and waterproof structure of offshore concrete cap formwork according to claim 1, characterized in that the vertical ring connection structure includes vertical ring key teeth provided on the side of one of the segmented UHPC vertical rings, and the other The corresponding side of the segmented UHPC vertical ring is provided with a vertical ring groove that matches the key teeth of the vertical ring to form a vertical ring splicing seam of adjacent segmented UHPC vertical rings. Two adjacent segmented UHPC There are circumferential embedded parts between the front and back of the vertical ring close to the vertical ring splicing seam. The annular embedded parts include vertical ring embedded steel plates arranged in front and behind the same segmented UHPC vertical ring. There are vertical ring shear members between the vertical ring embedded steel plates, and there are vertical ring welded steel plates between the vertical ring embedded steel plates on the same side of the adjacent segmented UHPC vertical rings, located outside the adjacent segmented UHPC vertical rings. The vertical ring welded steel plate on the side is also provided with a concrete protective layer on the outside. 7. The seam connection and waterproof structure of the offshore concrete cap formwork according to claim 6, characterized in that vertical ring slots are provided inside and outside the edges of both sides of the segmented UHPC vertical ring, and the ring is pre-shaped. The embedded parts are located in the slots of the vertical rings; vertical waterstops between the vertical rings are provided at the joints of the vertical rings. 8. The offshore concrete cap formwork joint connection and waterproof structure according to claim 1, characterized in that the UHPC integral bottom plate is provided with reserved holes. 9. The seam connection and waterproof structure of the offshore concrete cap formwork according to claim 4, characterized in that the circumferential convex part of the segmented UHPC bottom plate is provided with a circumferential waterstop, and the adjacent segmented UHPC bottom plate is provided with a circumferential waterstop. There are vertical waterstops between the floorboards at the joints between the floorboards, and groove waterstops between the floorboards are provided in the wedge-shaped grooves of the floorboards of the segmented UHPC floorboards. 10. A construction method using the seam joint connection and waterproof structure of the offshore concrete cap formwork as claimed in claim 1, characterized in that it includes the following steps: (1) Prefabricating the segmented UHPC vertical rings in an onshore prefabrication factory , slice the UHPC base plate, and transport it to an onshore construction site close to the offshore wind farm; (2) At the above-mentioned onshore construction site, lay the rubber waterstop and fix it on the segmented UHPC vertical ring and the vertical ring assembly of the sliced UHPC base plate Seams, floor splicing seams and the convex position of the base plate ring of the segmented UHPC base plate; (3) At the above-mentioned onshore construction site, multiple segmented UHPC vertical rings are assembled into a UHPC integral vertical ring through the vertical ring connection structure; (4) At the above-mentioned onshore construction site, multiple segmented UHPC base plates are assembled into a UHPC integral base plate through the base plate connection structure; (5) After the UHPC integral vertical ring is hoisted at the offshore construction site, connect the vertical ring groove of the UHPF integral vertical ring with the UHPC The bottom plate rings on the overall bottom plate match each other, and then the UHPC overall vertical ring and the UHPC overall bottom plate are connected into one body through the vertical ring connector.