CN115874577A - Offshore wind power PHC high pile cap fan foundation berthing component and construction method thereof - Google Patents
Offshore wind power PHC high pile cap fan foundation berthing component and construction method thereof Download PDFInfo
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- CN115874577A CN115874577A CN202211538511.XA CN202211538511A CN115874577A CN 115874577 A CN115874577 A CN 115874577A CN 202211538511 A CN202211538511 A CN 202211538511A CN 115874577 A CN115874577 A CN 115874577A
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- 239000010959 steel Substances 0.000 claims description 166
- 239000011440 grout Substances 0.000 claims description 55
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- 238000007789 sealing Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 8
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- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
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Abstract
The invention discloses a wind turbine foundation berthing component of a high-rise offshore wind power PHC pile cap, which belongs to the field of offshore wind power engineering. The structure is novel in structure and good in mechanical property, the stability and the cooperative stress performance of the structure are improved due to the use of the double inclined struts, the locking connection or grouting connection method is adopted, the use of electric welding in the installation process of the berthing component is avoided, and the construction quality can be further ensured.
Description
Technical Field
The invention relates to the field of offshore wind power engineering, in particular to a foundation mooring component of a PHC high-rise pile cap fan and a construction method thereof.
Background
Offshore wind energy resources are rich and stable, and global wind power development shows a trend from land to offshore. In various offshore wind power foundation forms, the bearing platform in the high pile bearing platform foundation form has uniform stress, large structural rigidity, good integrity and durability, low requirement on pile driving deviation and unique advantage. The high pile cap foundation berthing needs to be realized through a berthing component, and the berthing component is a device for bearing and transmitting the impact force of a ship.
The patent application number of CN201820812865.1 discloses a foundation berthing system for offshore wind power high-rise piles, which comprises a concrete bearing platform, wherein a plurality of bearing platform embedded parts are embedded in the upper part and the lower part of the concrete bearing platform respectively; the ship-berthing member comprises a plurality of ship-berthing steel pipes which are vertically arranged and ship-berthing columns which are horizontally arranged and fixedly connected with the plurality of ship-berthing steel pipes respectively. Can meet the long-term requirements of the debugging, running and overhauling work of fan equipment. The anchor ear connected with the adjacent steel pipe pile is added to the cantilever section at the lower part of the traditional berthing component and is connected with the scour protection steel pipe, so that the whole system is fixedly connected, the scour protection steel pipe is prevented from swinging indefinitely, and the lateral stress performance of the berthing system is enhanced.
The mooring component in the above form is fixed on the pile through the anchor ear at the lower part. The PHC pile has poor shear resistance, so that the fixing scheme on the pile is not feasible. However, if the lower part of the mooring component is not restrained, the overall cooperative stress performance of the structure is poor, and potential safety hazards exist when the ship is violently impacted. In addition, the installation difficulty of the berthing component on the construction site is high, so that the construction quality is difficult to ensure, and the safety problem is more obvious.
Based on the foundation, the invention designs the foundation berthing component of the offshore wind power PHC high-pile cap wind turbine, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a foundation berthing component of a PHC high-pile cap fan of offshore wind power to solve the technical problem.
In order to realize the purpose, the invention provides the following technical scheme: the utility model provides a marine wind power PHC high-rise pile cap fan basis mooring component, includes the cushion cap, the cushion cap front side is provided with two main steel pipes, two the upper end of main steel pipe is connected with main shaped steel, main shaped steel inner through pre-buried connecting piece with the cushion cap lateral wall is fixed continuous, two the inside wall middle part of main steel pipe is equallyd divide and is do not connected with the bracing component, the bracing component adopts to lock the formula to connect or the formula of being in milk is connected, two be connected with horizontal steel pipe between the bracing component lateral wall, two be provided with the cat ladder between the main steel pipe.
Preferably, the inclined strut component is connected in a locking mode and comprises a locking inclined strut, the upper end of the locking inclined strut is connected with the bottom of the bearing platform, and the locking inclined strut is formed by butting an upper inclined strut and a lower inclined strut through flange structures.
Preferably, the lower inclined strut is a hollow pipe body, and the two lower inclined struts are connected through two transverse steel pipes in a reinforcing manner; the upper inclined strut is a Y-shaped component formed by mutually welding two hollow pipe bodies, and the upper surfaces of the two pipe bodies of the Y-shaped component are flush with the bottom of the bearing platform.
Preferably, the lower end of the lower inclined strut is welded to the main steel pipe, and the upper end of the lower inclined strut is provided with a lower flange plate; the upper ends of the two pipe bodies of the upper inclined strut are welded on the inclined strut embedded connecting piece, and the lower ends of the two pipe bodies of the upper inclined strut are provided with upper flange plates; the upper inclined strut and the lower inclined strut are in butt joint through the upper flange plate and the lower flange plate matched with bolts.
Preferably, at least one transition gasket is clamped between the upper flange plate and the lower flange plate, the transition gasket is an annular plate body and is provided with gasket bolt holes, the upper flange plate and the lower flange plate are correspondingly provided with flange bolt holes, and the number and the size of the gasket bolt holes are consistent with those of the flange bolt holes.
Preferably, four inclined strut embedded connecting pieces are embedded at the lower end of the bearing platform, and the upper ends of two pipe bodies of the Y-shaped component of the upper inclined strut at two sides are respectively connected with the inclined strut embedded connecting pieces; the inclined strut embedded connecting piece is formed by mutually welding a plurality of anchor bolts and a steel plate.
Preferably, the inclined strut members are connected in a grouting manner and comprise inclined struts, and the upper ends of the inclined struts are inserted into the bottom of the bearing platform and fixed through grouting.
Preferably, a grouting corrugated pipe is embedded in the bottom surface of the bearing platform corresponding to the insertion position of the diagonal brace, the upper end of the grouting corrugated pipe is closed, the lower end of the grouting corrugated pipe is flush with the bottom surface of the bearing platform, a steel sealing plate is arranged on the grouting corrugated pipe to form a closed grouting chamber for coating the upper end of the diagonal brace, and filling grouting material is arranged between the upper end of the diagonal brace and the inner wall of the closed grouting chamber.
Preferably, the inner wall of the grouting corrugated pipe is threaded, and a circular steel plate is fixedly welded to the upper end of the diagonal brace.
Preferably, the lateral wall of the grouting corrugated pipe is provided with a grout inlet, a grout inlet pipe is connected between the grout inlet and the top surface of the bearing platform, a grout outlet is formed in the end part of the grouting corrugated pipe, and a grout outlet pipe is connected between the grout outlet and the bottom surface of the bearing platform.
Preferably, the tail end of the pulp outlet pipe is of an inverted S-shaped bent structure.
Preferably, the embedded connecting piece is formed by mutually welding four anchor bolts and three steel plates, and the three steel plates are mutually vertical; wherein, four crab-bolt equipartition welds on one face of middle part steel sheet, vertical steel sheet and horizontal steel sheet in addition connect in another face of middle part steel sheet, set up four bolt holes on the vertical steel sheet.
Preferably, the main section steel comprises normal section steel and tangential section steel, the normal section steel is provided with bolt holes, and the bolt holes correspond to four bolt holes in the vertical steel plate of the embedded connecting piece one by one; and the normal section steel is connected with the embedded connecting piece through a high-strength bolt.
Preferably, a plurality of steel pipes which are shaped like Chinese character 'ji' and are distributed in parallel at intervals are fixedly connected between the two main steel pipes, and the ladder stand is fixed on the steel pipes which are shaped like Chinese character 'ji' through bolts.
A construction method of a foundation berthing component of a PHC high-rise pile cap fan of offshore wind power comprises the following construction steps when butt-lock connection is adopted:
6) Prefabricating a diagonal brace embedded connecting piece and an embedded connecting piece;
7) Welding the upper ends of the two pipe bodies of the upper inclined strut to the center position of the lower surface of the inclined strut embedded connecting piece;
8) Accurately positioning and installing a pre-buried connecting piece on the side surface of the bearing platform to be formed after the construction of the bearing platform template is finished and before the concrete of the bearing platform is poured; accurately positioning and installing a diagonal brace embedded connecting piece below a bearing platform to be formed;
9) Assembling and welding the rest parts of the ship leaning member except the upper inclined strut on the shore to form a whole, and hoisting after the assembly is finished; after the upper inclined strut and the lower inclined strut are hoisted to the designated position, whether a gasket is added at the locking position of the normal profile steel and the embedded connecting piece bolt is determined according to the relative position between the upper inclined strut and the lower inclined strut so as to ensure that the axes of the upper inclined strut and the lower inclined strut are on the same straight line; after the corresponding positions are adjusted, connecting the four normal section steels and the four embedded connecting pieces through high-strength bolts;
determining to add transition gaskets with corresponding quantity or thickness according to the distance between the upper flange plate and the lower flange plate under the actual construction condition so as to fill the distance between the upper flange plate and the lower flange plate; after the transition gasket is installed, the upper flange plate and the lower flange plate are connected through bolts, and the butt joint of the two opposite locking type inclined struts is completed.
A construction method of a foundation berthing component of a PHC high-pile cap fan of offshore wind power comprises the following construction steps when grouting connection is adopted:
7) Prefabricating a pre-buried connecting piece and a grouting corrugated pipe in a factory;
8) After the construction of the bearing platform template is completed and before the concrete of the bearing platform is poured, accurately positioning the side surface of the bearing platform to be formed, installing a pre-embedded connecting piece on the bottom surface of the bearing platform to be formed, and accurately positioning and installing a grouting corrugated pipe;
9) Connecting the tail end of the pulp inlet pipe to the pulp inlet, extending the head end of the pulp inlet pipe out of the upper surface of a bearing platform to be formed, and plugging by using a rubber plug; the head end of the grout outlet pipe is connected to the grout outlet of the grouting corrugated pipe, the tail end of the grout outlet pipe extends out of the lower surface of a bearing platform to be formed and is plugged by a rubber plug, and the tail section of the grout outlet pipe
Bending into an inverted S shape;
10 All parts of the ship-alongside member are assembled and welded on the shore to form a whole, and hoisting is carried out after the assembly is finished; before formal hoisting, uniformly coating structural adhesive on the upper surface of the steel sealing plate, and coating the structural adhesive on the position of the steel sealing plate on the lower surface of the bearing platform; during the hoisting process, the upper end of the diagonal brace is ensured to be inserted into the grouting corrugated pipe at the bottom of the bearing platform; after the four normal section steels are adjusted to the corresponding positions, the four normal section steels and the four embedded connecting pieces are connected through high-strength bolts; bonding the upper surface of the steel seal plate to the lower surface of the bearing platform, and waiting for the bonding
Completely bonding;
11 Pulling out the rubber plugs of the grout inlet pipe and the grout outlet pipe, grouting at the head end of the grout inlet pipe by using a grouting machine until grouting material flows out at the tail end of the grout outlet pipe, which indicates that the grouting corrugated pipe is filled with grouting material
Sizing agent;
12 After grouting, the part of the grout inlet pipe extending out of the upper surface of the bearing platform is cut off.
Compared with the prior art, the invention has the beneficial effects that:
the main body part of the offshore wind power berthing component is formed by mutually connecting main section steel and main steel pipes, and an inclined stay bar is connected between the main steel pipes and the bottom surface of a bearing platform to form a three-dimensional support structure; the inner end of the main profile steel is fixedly connected with the side wall of the bearing platform through a pre-buried connecting piece, the inclined strut members are connected in a locking type or grouting type, and when the locking type connection is adopted, the stability and the cooperative stress performance of the structure are improved through the locking type inclined struts, and the construction convenience is improved through the application of the locking connection; when grouting connection is adopted, the upper end of the inclined stay bar is inserted into the bottom of the bearing platform and fixed through grouting, so that the firmness of the connection part is ensured; therefore, the structural cooperative stress performance of the mooring component can be effectively improved, potential safety hazards can not be caused when the mooring component is violently impacted by a ship body, top irrigation is adopted in a construction field, the mounting difficulty is low, the butt joint precision is easy to control, the construction quality can be ensured, and safety problems are eliminated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a general top view of the present invention (with a cross-lock type connection brace);
FIG. 2 is a general front view of the present invention (with a diagonal bracing in a lock-to-lock connection);
FIG. 3-1 shows a top view 1 of an offshore wind turbine foundation mooring component of the present invention using a pair-lock diagonal brace (using a pair-lock connection diagonal brace);
FIG. 3-2 shows a top view 2 of an offshore wind turbine foundation mooring component of the present invention using a pair-lock diagonal brace (using a pair-lock connection diagonal brace);
FIG. 4 is a cross-sectional view of the overall structure 1-1 of the present invention (using a pair-lock type connecting brace);
FIG. 5 shows a detailed view A of the overall structure of the present invention (using a diagonal bracing in a locking connection);
FIG. 6 is a top view of the pre-buried connector of the diagonal brace of the present invention (the diagonal brace is connected by a pair lock type);
FIG. 7 shows a detail B of the overall structure of the present invention (using a diagonal bracing in a pair-lock type connection);
FIG. 8 is a detailed view of the pre-buried connector of the present invention (using a pair-lock type connection diagonal brace);
FIG. 9 is a cross-sectional view of the pre-buried connector 2-2 of the present invention (using a pair-lock type connection diagonal brace);
FIG. 10 shows a detail C of the overall structure of the present invention (using a diagonal bracing in a pair-lock type connection);
FIG. 11 is a cross-sectional view of a pre-buried connector 3-3 according to the present invention (using a diagonal bracing in a pair-lock connection);
FIG. 12 is a detailed view of the flange gasket of the pre-buried connecting piece of the present invention (using a pair-lock type connecting diagonal brace);
FIG. 13 is an overall top view of the present invention (using grouted tie braces);
FIG. 14 is a top view of a foundation mooring component for an offshore wind turbine using diagonal lock struts according to the present invention (using grout-type diagonal struts);
FIG. 15 is a sectional view of the overall structure 1-1 of the present invention (using grouted diagonal braces);
FIG. 16 shows a detail D of the overall structure of the present invention (using grouted diagonal braces).
In the drawings, the reference numbers indicate the following list of parts:
1. a bearing platform; 2. a mooring component main steel pipe; 3. main section steel; 3-1, normal profile steel; 3-2, tangential section steel; 4. climbing a ladder; 5. pre-burying a connecting piece; 5-1, anchor bolts; 5-2, a middle steel plate; 5-3, vertical steel plates; 5-4, transverse steel plates; 5-5, bolt hole; 6. a pair-lock type inclined strut; 6-1, upper inclined struts; 6-2, lower inclined struts; 7. locking flanges; 7-1, arranging a flange plate; 7-2, a lower flange plate; 7-3, flange gasket; 7-4, flange plate bolt holes; 7-5, gasket bolt holes; 8. pre-burying a connecting piece by using an inclined strut; 8-1, embedding a connecting piece anchor bolt by using an inclined strut; 8-2, pre-burying a connecting piece steel plate by using an inclined strut; 9. a transverse steel pipe; 10. a steel pipe shaped like a Chinese character 'ji'; 11. PHC pile; 12. grouting a connecting inclined strut; 12-1, round steel plate; 12-2, steel sealing plates; 13. grouting the corrugated pipe; 13-1, a pulp inlet; 13-2, a pulp outlet; 14. grouting pipes; 14-1, a pulp inlet pipe; 14-2, a pulp outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Scheme 1 (with a double-lock connection):
referring to the drawings, the invention provides a technical scheme: in this embodiment, as shown in fig. 1 to 4, an offshore wind power mooring component adopting plug-in grouting to connect diagonal braces at least includes: the device comprises a bearing platform 1, a berthing component main steel pipe 2, main section steel 3, a ladder stand 4, a pre-embedded connecting piece 5, a pair-locking type inclined strut 6, a pair-locking flange 7 and an inclined strut pre-embedded connecting piece 8; the bottom of the bearing platform 1 is provided with a plurality of scattered PC piles 11, the main section steel 3 and the two main steel pipes 2 are connected with each other, so that a structural main body of the berthing member is formed, and the structural main body is fixed on the side surface of the bearing platform 1 through embedded part connecting pieces 5; the lower end of the counter-locking type diagonal brace 6 is welded on the main steel pipe 2, and the upper end of the counter-locking type diagonal brace is fixed on the lower surface of the bearing platform 1 through being mutually welded with a diagonal brace embedded connecting piece 8; the number of the pair-locking type inclined struts 6 is the same as that of the main steel pipes 2; the paired lock type inclined strut 6 is formed by butting an upper inclined strut 6-1 and a lower inclined strut 6-2, the stability and the cooperative stress performance of the structure are improved through the inclined struts, and the construction convenience is improved through the application of paired lock connection;
in this embodiment, as shown in fig. 4, the lower inclined strut 6-2 is a hollow tube, and the two lower inclined struts 6-2 are connected by two transverse steel tubes 9 in a reinforced manner; the upper inclined strut 6-1 is a Y-shaped component formed by mutually welding two hollow pipe bodies, and the upper surfaces of the two pipe bodies of the Y-shaped component are flush with the bottom of the bearing platform 1; the integrity of the lower inclined strut is enhanced by the arrangement of the transverse steel pipe 9, the upper inclined strut 6-1 is arranged into a Y-shaped component, the structural redundancy is increased, the structural safety is further guaranteed, and meanwhile, the accuracy of the angle of the inclined strut is guaranteed due to the design of the Y-shaped component.
In this embodiment, as shown in fig. 4 and 10, the lower end of the lower inclined strut 6-2 is welded to the main steel pipe 2, and the upper end is provided with a lower flange 7-2; the upper ends of the two pipe bodies of the upper inclined strut 6-1 are welded to the inclined strut embedded connecting piece 8, and the lower ends are provided with upper flange plates 7-1; the upper inclined strut 6-1 and the lower inclined strut 6-2 are in butt joint through an upper flange 7-1 and a lower flange 7-2 matched with bolts; the method of bolt butt joint is adopted, so that the use of electric welding in the installation process of the mooring component is avoided, the construction convenience is improved, and meanwhile, the construction quality can be better ensured.
In this embodiment, as shown in fig. 10, a transition gasket 7-3 is sandwiched between the upper flange 7-1 and the lower flange 7-2, the transition gasket 7-3 is a circular ring-shaped plate body and is provided with gasket bolt holes 7-5, the upper flange 7-1 and the lower flange 7-2 are correspondingly provided with flange bolt holes 7-4, and the gasket bolt holes 7-5 and the flange bolt holes 7-4 are consistent in number and size; the number and the stacking thickness of the transition gaskets 7-3 are determined according to the distance between the upper flange plate and the lower flange plate under the actual construction condition; during design, a certain distance is arranged between the two flanges, and the thickness of the transition gasket is determined according to the actual distance in construction, so that construction errors are adjusted, and the requirement on construction precision is reduced.
In this embodiment, as shown in fig. 5 and 6, 4 inclined strut embedded connecting pieces 8 are embedded at the lower end of the bearing platform 1; the inclined strut embedded connecting piece 8 is formed by mutually welding a plurality of anchor bolts 8-1 and a steel plate 8-2, the number of the anchor bolts 8-1 in the embodiment is nine, and the nine anchor bolts 8-1 are uniformly distributed and welded on the upper surface of the steel plate 8-2; the inclined strut embedded connecting piece 8 is embedded at the lower end of the bearing platform 1, and only the lower surface of the steel plate 8-2 is exposed out of the bearing platform 1;
in the embodiment, as shown in fig. 7 to 9, the bearing platform is provided with an embedded connecting piece 5, the embedded connecting piece 5 is formed by welding four anchor bolts 5-1 and three steel plates, wherein the four anchor bolts 5-1 are uniformly welded on one surface of the middle steel plate 5-2, the other two steel plates (a vertical steel plate 5-3 and a horizontal steel plate 5-4) are connected to the other surface of the middle steel plate 5-2, and the three steel plates are perpendicular to each other; in the embedded connecting piece, four anchor bolts 5-1 and a middle steel plate 5-2 are embedded in the concrete of the bearing platform, the other two steel plates are exposed out of the bearing platform, and four bolt holes 5-5 are formed in the vertical steel plate;
in the embodiment, as shown in fig. 4 and fig. 7 to 9, the normal section steel 3-1 is provided with bolt holes, and the bolt holes correspond to four bolt holes in the vertical steel plate 5-3 of the embedded connecting piece one by one; the normal section steel 3-1 is connected with the embedded connecting piece 5 through a high-strength bolt; the tangential section steel 3-2 is connected with the normal section steel 3-1 through welding; the main steel pipe 2 and the normal type 3-1 steel are connected by welding;
in this embodiment, as shown in fig. 3-1, the two main steel pipes 2 are connected by a plurality of straight steel pipes 10 with the same spacing, and the ladder 4 is fixed on the steel pipe 10 with a shape like a Chinese character 'ji' by using bolts, so that the integrity of the mooring component is improved by the steel pipe group with a shape like a Chinese character 'ji', and the ladder does not participate in stress as an accessory component.
The concrete construction mode corresponding to the scheme 1 (adopting the interlocking connection) is as follows:
prefabricating an inclined strut embedded connecting piece 8 and an embedded connecting piece 5 in a factory, and welding the upper ends of two pipe bodies of an upper inclined strut 6-1 to the center position of the lower surface of the inclined strut embedded connecting piece 8; accurately positioning and installing a pre-buried connecting piece 5 on the side surface of the bearing platform to be formed after the construction of the bearing platform template is finished and before the concrete of the bearing platform is poured; accurately positioning and installing a diagonal bracing embedded connecting piece 8 below a bearing platform to be formed, wherein a vertical steel plate 5-3 and a transverse steel plate 5-4 extend out of a bearing platform template; the rest parts of the ship-leaning component except the upper inclined strut 6-1 are assembled and welded on the shore to form a whole, and are hoisted after the assembly is finished; after the steel pipe is hoisted to a designated position, according to the relative position between the upper inclined strut 6-1 and the lower inclined strut 6-2, whether a gasket is added at the bolt locking position of the normal section steel 3-1 and the embedded connecting piece 5 is determined, so that the pipe axes of the upper inclined strut 6-1 and the lower inclined strut 6-2 are ensured to be on the same straight line; after the corresponding positions are adjusted, connecting the four normal section steels 3-1 with the four embedded connecting pieces 5 through high-strength bolts; determining to add transition gaskets 7-3 with corresponding quantity or thickness according to the distance between the upper flange 7-1 and the lower flange 7-2 under the actual construction condition so as to fill the distance between the upper flange and the lower flange; after the transition gasket 7-3 is installed, the upper flange 7-1 and the lower flange 7-2 are connected through bolts, and the butt joint of the two oppositely-locked inclined struts 6 is completed.
Scheme 2 (grout type connection):
referring to the attached drawings, the utility model provides a technical scheme: in this embodiment, as shown in fig. 13 to 14, an offshore wind power mooring component using plug-in grouting to connect diagonal braces at least includes: the device comprises a bearing platform 1, a main steel pipe 2, main section steel 3, a ladder 4, a pre-buried connecting piece 5, an inclined stay bar 12, a grouting corrugated pipe 13 and a grouting pipe 14; the bottom of the bearing platform 1 is provided with a plurality of scattered PC piles 11, the main section steel 3 and the two main steel pipes 2 are mutually connected to form a structural main body of the berthing member, and the berthing member is fixed on the side surface of the bearing platform 1 through the embedded part connecting piece 5; the lower end of the diagonal brace 12 is welded on the main steel pipe 2, the upper end of the diagonal brace is inserted into the bearing platform 1, and the diagonal brace is fixed below the bearing platform in a grouting connection mode, so that the stability and the cooperative stress performance of the structure are improved through the diagonal brace, the grouting connection is applied, the construction convenience is improved, and the requirement on the construction precision is reduced;
in this embodiment, as shown in fig. 15 and 16, the number of the diagonal braces 12 is the same as that of the main steel pipes 2, and the two diagonal braces 12 are connected by one transverse steel pipe 9; a circular steel plate 12-1 with the diameter larger than the outer diameter of the diagonal brace is welded at the top end of the diagonal brace 12; the inclined strut 12 is provided with a steel sealing plate 12-2 at the lower surface of the bearing platform 1, and the outer contour of the steel sealing plate 12-2 can cover the exposed contour of the grouting corrugated pipe 13 at the lower surface of the bearing platform 1; bonding the steel sealing plate to the bottom of the bearing platform 1 by using structural adhesive, and forming a closed cavity on the lower surface of the bearing platform 1; due to the use of the structural adhesive, the sealing performance is ensured, and the condition of slurry leakage in the grouting process can be effectively prevented;
as shown in fig. 16, the grouting corrugated pipe 13 is hollow, and has a cylindrical cutting body with an opening at one end and a closed end, and the cutting plane of the cylindrical cutting body coincides with the lower surface of the bearing platform 1; the axial direction of the column of the grouting corrugated pipe 13 is the same as the axial direction of the inclined strut 12; the inner wall of the grouting corrugated pipe 13 is rectangular zigzag so as to enhance the bonding performance with concrete and grouting material;
as shown in fig. 16, a grout inlet 13-1 is arranged on the lower side surface of the grouting corrugated pipe 13, and a grout outlet 13-2 is arranged on the upper surface of the grouting corrugated pipe; a grout inlet pipe 14-1 and a grout outlet pipe 14-2 are pre-embedded in the 1 part of the bearing platform, the head part of the grout inlet pipe 14-1 extends out of the upper surface of the bearing platform, the tail part of the grout inlet pipe is connected with a grout inlet 13-1 of a grouting corrugated pipe, the head part of the grout outlet pipe 14-2 is connected with a grout outlet 13-2 of the grouting corrugated pipe, and the tail end of the grout outlet pipe extends out of the lower surface of the bearing platform; the tail part of the grout outlet pipe 14-2 is in an inverted S shape, and the inverted S shape enables grouting material to be reserved in the grout outlet;
as shown in fig. 15 and 16, a gap is formed between the portion of the inclined strut 12 inserted into the grouting corrugated pipe 13 and the grouting corrugated pipe 13, and the gap is filled with high-strength grouting material; the grout inlet pipe 14-1 and the grout outlet pipe 14-2 are filled with high-strength grouting material, during pouring, the high-strength grouting material is poured from the grout inlet pipe 14-1 into the grouting corrugated pipe 13 through the grout inlet 13-1, and the high-strength grouting material overflows from the grout outlet pipe 14-2 through the grout outlet 13-2 after the grouting corrugated pipe 13 is filled with the high-strength grouting material, so that the grouting corrugated pipe 13, the grout inlet pipe 14-1 and the grout outlet pipe 14-2 are filled with the high-strength grouting material;
as shown in fig. 7 and 15, the bearing platform 1 is provided with an embedded connecting piece 5, the embedded connecting piece 5 is formed by welding four anchor bolts 5-1 and three steel plates, wherein the four anchor bolts 5-1 are uniformly welded on one surface of the middle steel plate 5-2, the vertical steel plate 5-3 and the transverse steel plate 5-4 are connected on the other surface of the middle steel plate, and the three steel plates are vertical to each other; in the pre-buried connecting piece, four anchor bolts 5-1 and a middle steel plate 5-2 are buried in the concrete of the bearing platform, the rest two steel plates are exposed out of the bearing platform, and four bolt holes 5-5 are formed in a vertical steel plate 5-3;
as shown in fig. 7 to 9, the normal section steel 3-1 is provided with bolt holes which correspond to four bolt holes on the vertical steel plate of the embedded connecting piece one by one; the normal section steel 3-1 is connected with the embedded connecting piece through a high-strength bolt; the tangential section steel 3-2 is connected with the normal section steel 3-1 through welding; the main steel pipe 2 and the normal section steel 3-1 are connected by welding;
as shown in fig. 13 and 14, the two main steel pipes 2 are connected by the steel pipe 10 in a shape of a Chinese character 'ji', and the ladder 4 is fixed to the steel pipe 10 in a shape of a Chinese character 'ji' using bolts, so that the steel pipe 10 in a shape of a Chinese character 'ji' improves the integrity of the mooring member, and the ladder 4 does not participate in stress as an accessory member.
The concrete construction mode corresponding to the scheme 2 (adopting grouting connection) is as follows:
prefabricating a pre-buried connecting piece 5 and a grouting corrugated pipe 13 in a factory; accurately positioning and installing a pre-embedded connecting piece 5 on the side surface of the bearing platform 1 to be formed after the template of the bearing platform 1 is built and before the concrete of the bearing platform 1 is poured; the vertical steel plate 5-3 and the horizontal steel plate 5-4 extend out of the bearing platform template; accurately positioning and installing a grouting corrugated pipe 13 on the bottom surface of a bearing platform 1 to be formed, connecting the tail end of a slurry inlet pipe 14-1 to a slurry inlet 13-1, extending the head end of the slurry inlet pipe 14-1 out of the upper surface of the bearing platform 1 to be formed by 100mm, and plugging by using a rubber plug; the head end of a grout outlet pipe 14-2 is connected to a grout outlet 13-2 of a grouting corrugated pipe, the tail end of the grout outlet pipe 14-2 extends out of the lower surface of a to-be-formed bearing platform by 100mm, a rubber plug is used for plugging, and the tail section of the grout outlet pipe 14-2 is bent into an inverted S shape; assembling and welding all parts of the ship-alongside member on the shore to form a whole, and hoisting after assembling; before formal hoisting, uniformly coating structural adhesive on the upper surface of the steel seal plate 12-2, and coating the structural adhesive on the position of the steel seal plate 12-2 on the lower surface of the bearing platform 1; in the hoisting process, the upper end of the diagonal brace 12 is ensured to be inserted into the grouting corrugated pipe 13 at the bottom of the bearing platform; after being adjusted to the corresponding positions, the four normal section steels 3-1 and the four embedded connecting pieces 5 are connected through high-strength bolts; adhering the upper surface of the steel sealing plate 12-2 to the lower surface of the bearing platform 1 to wait for the complete adhesion; pulling out the rubber stoppers of the slurry inlet pipe 14-1 and the slurry outlet pipe 14-2, grouting at the head end of the slurry inlet pipe 14-1 by using a grouting machine until grouting material flows out at the tail end of the slurry outlet pipe 14-2, and indicating that the grouting material is filled in the grouting corrugated pipe; after grouting is finished, the part of the grout inlet pipe 14-1 extending out of the upper surface of the bearing platform 1 is cut off.
Finally, it should be noted that: the above examples are only intended 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 preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (16)
1. The utility model provides a marine wind power PHC high pile cap fan basis mooring component which characterized in that: including cushion cap (1), cushion cap (1) front side is provided with two main steel pipes (2), two the upper end of main steel pipe (2) is connected with main shaped steel (3), main shaped steel (3) the inner through pre-buried connecting piece (5) with cushion cap (1) lateral wall is fixed continuous, two the inside wall middle part of main steel pipe (2) is equallyd divide and is do not connected with the bracing component, the bracing component adopts to lock the formula to connect or the formula of being in milk is connected, two be connected with horizontal steel pipe (9), two between the bracing component lateral wall be provided with cat ladder (4) between main steel pipe (2).
2. The offshore wind power PHC high pile cap fan foundation berthing component of claim 1, characterized by: the inclined strut component is connected in a locking mode and comprises a locking inclined strut (6), the upper end of the locking inclined strut (6) is connected with the bottom of the bearing platform (1), and the locking inclined strut (6) is formed by butting an upper inclined strut (6-1) and a lower inclined strut (6-2) through a flange structure.
3. The offshore wind power PHC high pile cap fan foundation berthing component of claim 2, characterized by: the lower inclined strut (6-2) is a hollow pipe body, and the two lower inclined struts (6-2) are connected in a reinforcing way through two transverse steel pipes (9); the upper inclined strut (6-1) is a Y-shaped component formed by mutually welding two hollow pipe bodies, and the upper surfaces of the two pipe bodies of the Y-shaped component are flush with the bottom of the bearing platform (1).
4. The offshore wind power PHC high pile cap wind turbine foundation berthing component of claim 2 or 3, characterized in that: the lower end of the lower inclined strut (6-2) is welded to the main steel pipe (2), and the upper end of the lower inclined strut is provided with a lower flange plate (7-2); the upper ends of the two pipe bodies of the upper inclined strut (6-1) are welded on the inclined strut embedded connecting piece (8), and the lower ends are provided with upper flange plates (7-1); the upper inclined support (6-1) and the lower inclined support (6-2) are in butt joint through the upper flange plate (7-1) and the lower flange plate (7-2) matched with bolts.
5. The offshore wind power PHC high pile cap fan foundation mooring component of claim 4, wherein: at least one transition gasket (7-3) is clamped between the upper flange plate (7-1) and the lower flange plate (7-2), the transition gasket (7-3) is an annular plate body and is provided with gasket bolt holes (7-5), the upper flange plate (7-1) and the lower flange plate (7-2) are correspondingly provided with flange plate bolt holes (7-4), and the gasket bolt holes (7-5) and the flange plate bolt holes (7-4) are consistent in number and size.
6. The offshore wind power PHC high pile cap fan foundation mooring component of claim 3, wherein: four inclined strut embedded connecting pieces (8) are embedded at the lower end of the bearing platform (1), and the upper ends of two pipe bodies of the Y-shaped component of the upper inclined strut (6-1) at two sides are respectively connected with the inclined strut embedded connecting pieces (8); the inclined strut embedded connecting piece (8) is formed by mutually welding a plurality of anchor bolts (8-1) and a steel plate (8-2).
7. The offshore wind power PHC high pile cap fan foundation mooring component of claim 1, characterized in that: the inclined strut members are connected in a grouting mode and comprise inclined struts (12), and the upper ends of the inclined struts (12) are inserted into the bottom of the bearing platform (1) and fixed through grouting.
8. The offshore wind power PHC high pile cap fan foundation mooring component of claim 7, wherein: grouting corrugated pipes (13) are embedded in the bottom surface of the bearing platform (1) corresponding to the inserting positions of the inclined stay bars (12), the upper ends of the grouting corrugated pipes (13) are closed, the lower ends of the grouting corrugated pipes are flush with the bottom surface of the bearing platform (1), steel sealing plates (12-2) are arranged to form a closed grouting cavity wrapping the upper ends of the inclined stay bars (12), and filling grouting materials are arranged between the upper ends of the inclined stay bars (12) and the inner walls of the closed grouting cavity.
9. The offshore wind power PHC high pile cap fan foundation mooring component of claim 8, wherein: the inner wall of the grouting corrugated pipe (13) is in a threaded shape, and a circular steel plate (12-1) is fixedly welded at the upper end part of the inclined strut (12).
10. The offshore wind power PHC high pile cap fan foundation berthing component of claim 8, characterized by: the side wall of the grouting corrugated pipe (13) is provided with a grout inlet (13-1), a grout inlet pipe (14-1) is connected between the grout inlet (13-1) and the top surface of the bearing platform (1), a grout outlet (13-2) is formed in the end part of the grouting corrugated pipe (13), and a grout outlet pipe (14-2) is connected between the grout outlet (13-2) and the bottom surface of the bearing platform (1).
11. The offshore wind power PHC high pile cap fan foundation mooring component of claim 10, wherein: the tail end of the pulp outlet pipe (14-2) is of an inverted S-shaped bent structure.
12. The offshore wind power PHC high pile cap fan foundation mooring component of claim 1, characterized in that: the embedded connecting piece (5) is formed by welding four anchor bolts (5-1) and three steel plates, wherein the three steel plates are vertical to each other; the anchor bolts (5-1) are uniformly welded on one surface of the middle steel plate (5-2), the other vertical steel plate (5-3) and the other horizontal steel plate (5-4) are connected to the other surface of the middle steel plate (5-2), and the vertical steel plate (5-3) is provided with four bolt holes (5-5).
13. The offshore wind power PHC high pile cap fan foundation mooring component of claim 1, characterized in that: the main section steel (3) comprises normal section steel (3-1) and tangential section steel (3-2), the normal section steel (3-1) is provided with bolt holes, and the bolt holes correspond to four bolt holes (5-5) in a vertical steel plate (5-3) of the pre-buried connecting piece (5) one by one; the normal section steel (3-1) is connected with the embedded connecting piece (5) through a high-strength bolt.
14. The offshore wind power PHC high pile cap fan foundation mooring component of claim 1, characterized in that: a plurality of steel pipes (10) which are parallel and distributed at intervals are fixedly connected between the two main steel pipes (2), and the ladder stand (4) is fixed on the steel pipes (10) through bolts.
15. The construction method of the wind turbine foundation mooring component of the offshore wind power PHC high pile cap according to any one of claims 2-6, characterized in that when the butt-lock connection is adopted, the construction steps are as follows:
1) Prefabricating a diagonal bracing embedded connecting piece (8) and an embedded connecting piece (5);
2) Welding the upper ends of the two pipe bodies of the upper inclined strut (6-1) to the center position of the lower surface of the inclined strut embedded connecting piece (8);
3) After the template of the bearing platform (1) is built and before the concrete of the bearing platform (1) is poured,
accurately positioning and installing a pre-buried connecting piece (5) on the side surface of a bearing platform (1) to be formed; accurately positioning and installing an inclined strut embedded connecting piece (8) below a bearing platform (1) to be formed;
4) The rest parts of the ship leaning component except the upper inclined strut (6-1) are assembled and welded on the shore to form a whole, and are hoisted after being assembled; after being hoisted to the designated position, the upper inclined strut (6-1)
And the relative position between the lower inclined strut (6-2) and the upper inclined strut (6-1) confirms whether a gasket is added at the bolt locking position of the normal section steel (3-1) and the embedded connecting piece (5) or not so as to ensure that the pipe axes of the upper inclined strut (6-1) and the lower inclined strut (6-2) are on the same straight line; after the corresponding positions are adjusted, connecting the four normal section steels (3-1) and the four embedded connecting pieces (5) through high-strength bolts;
5) Determining and adding transition gaskets (7-3) with corresponding quantity or thickness according to the distance between the upper flange plate (7-1) and the lower flange plate (7-2) under the actual construction condition so as to fill the distance between the upper flange plate and the lower flange plate; after the transition gasket (7-3) is installed, the upper flange plate (7-1) and the lower flange plate (7-2) are connected through bolts, and the butt joint of the two opposite lock type inclined struts (6) is completed.
16. The construction method of the wind turbine foundation berthing component of the offshore wind power PHC high-pile cap of any one of claims 7 to 11, characterized in that when grouting connection is adopted, the construction steps are as follows:
1) Prefabricating a pre-buried connecting piece (5) and a grouting corrugated pipe (13) in a factory;
2) After the template of the bearing platform (1) is built and before the concrete of the bearing platform (1) is poured,
accurately positioning the side surface of the bearing platform (1) to be formed, installing an embedded connecting piece (5) on the bottom surface of the bearing platform (1) to be formed, and accurately positioning and installing a grouting corrugated pipe (13);
3) The tail end of the pulp inlet pipe (14-1) is connected to the pulp inlet (13-1), and the pulp inlet pipe (14-1)
The head end extends out of the upper surface of a bearing platform (1) to be formed, and a rubber plug is used for plugging; will go out thick liquid pipe (14-2)
The head end is connected to a grout outlet (13-2) of the grouting corrugated pipe, the tail end of the grout outlet pipe (14-2) extends out of the lower surface of a cushion cap to be formed and is plugged by a rubber plug, and the tail section of the grout outlet pipe (14-2) is bent into an inverted S shape;
4) Assembling and welding all parts of the ship-berthing member on the shore to form a whole, and hoisting after the assembly is finished; before formal hoisting, uniformly coating structural adhesive on the upper surface of the steel seal plate (12-2), and coating the structural adhesive on the position of the steel seal plate (12-2) on the lower surface of the bearing platform (1); in the hoisting process, the upper end of the diagonal brace (12) is ensured to be inserted into a grouting corrugated pipe (13) at the bottom of the bearing platform; after the four normal section steels are adjusted to the corresponding positions, the four normal section steels (3-1) and the four embedded connecting pieces (5) are connected through high-strength bolts;
bonding the upper surface of the steel sealing plate (12-2) to the lower surface of the bearing platform (1) to wait for the complete bonding;
5) Pulling out the rubber plugs of the grout inlet pipe (14-1) and the grout outlet pipe (14-2), grouting at the head end of the grout inlet pipe (14-1) by using a grouting machine until grouting material flows out at the tail end of the grout outlet pipe (14-2),
the grouting material is filled in the grouting corrugated pipe;
6) After grouting is finished, cutting off the part of the grout inlet pipe (14-1) extending out of the upper surface of the bearing platform (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211538511.XA CN115874577A (en) | 2022-12-02 | 2022-12-02 | Offshore wind power PHC high pile cap fan foundation berthing component and construction method thereof |
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| CN202211538511.XA CN115874577A (en) | 2022-12-02 | 2022-12-02 | Offshore wind power PHC high pile cap fan foundation berthing component and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104695411A (en) * | 2015-03-17 | 2015-06-10 | 苏交科集团股份有限公司 | Prefabricated composite structure steel pipe pile wind power generation platform |
| CN107326810A (en) * | 2017-08-03 | 2017-11-07 | 武汉理工大学 | The reserved grout hole connection method of precast assembly bridge pier |
| US20180223497A1 (en) * | 2015-08-03 | 2018-08-09 | Ming Yang Smart Energy Group, Ltd. | Construction device and method for offshore wind turbine foundation with piling performed later |
| CN209958384U (en) * | 2019-04-10 | 2020-01-17 | 上海勘测设计研究院有限公司 | Truss type berthing structure for high-rise pile cap foundation |
| CN219118111U (en) * | 2022-12-02 | 2023-06-02 | 中国电建集团福建省电力勘测设计院有限公司 | Offshore wind power berthing component adopting grouting insertion type diagonal bracing |
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2022
- 2022-12-02 CN CN202211538511.XA patent/CN115874577A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695411A (en) * | 2015-03-17 | 2015-06-10 | 苏交科集团股份有限公司 | Prefabricated composite structure steel pipe pile wind power generation platform |
| US20180223497A1 (en) * | 2015-08-03 | 2018-08-09 | Ming Yang Smart Energy Group, Ltd. | Construction device and method for offshore wind turbine foundation with piling performed later |
| CN107326810A (en) * | 2017-08-03 | 2017-11-07 | 武汉理工大学 | The reserved grout hole connection method of precast assembly bridge pier |
| CN209958384U (en) * | 2019-04-10 | 2020-01-17 | 上海勘测设计研究院有限公司 | Truss type berthing structure for high-rise pile cap foundation |
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