CN113914358A - Intelligent bionic scouring protection structure for cylindrical foundation and application method of intelligent bionic scouring protection structure - Google Patents
Intelligent bionic scouring protection structure for cylindrical foundation and application method of intelligent bionic scouring protection structure Download PDFInfo
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- CN113914358A CN113914358A CN202111250197.0A CN202111250197A CN113914358A CN 113914358 A CN113914358 A CN 113914358A CN 202111250197 A CN202111250197 A CN 202111250197A CN 113914358 A CN113914358 A CN 113914358A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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Abstract
The invention relates to an intelligent bionic scouring protective structure for a cylindrical foundation and an application method thereof, wherein the protective structure is formed by connecting bionic units; the top layer of the bionic unit is a bionic grass bunch, the bottom end of the bionic grass bunch is sleeved inside the bundling pipe, the bundling pipe is fixedly connected with the fiber net layers through binding wires, two ends of each fiber net layer are fixedly provided with connecting rings through the binding wires, and two adjacent fiber net layers are connected through the connecting rings; and a seabed connecting structure used for fixing the whole protection structure is arranged at the bottom of the bionic unit. Through adopting foretell protective structure, it adopts upper, middle and lower three-layer, replaces hard scour protection such as traditional throwing stone, sand bag.
Description
Technical Field
The invention relates to the field of offshore wind power engineering, in particular to a cylindrical foundation intelligent bionic erosion protection structure and an application method thereof.
Background
Foundation scouring protection is required in the offshore wind power construction process, the integral and local scouring ranges of the group barrel jacket foundation are distributed, the scouring range is large, the integral scouring pit depth is shallow, and the integral scouring pit depth is obviously different from a single-pile scouring pit. The seabed scour protection technology is one of the important subjects of the research in the field of ocean engineering of various countries.
The existing barrel type foundation scouring protection is mostly hard protection measures, such as the technologies of stone throwing, soil engineering bags (woven geotextile bags, geomembrane bags and the like filled with concrete blocks, stones, sand and soil), underwater concrete bottom protection, concrete precast blocks (similar to the mechanism of stone blocks), reinforcement cages or geogrids cage-filled stones, sludge solidification and the like.
In conclusion, when the existing hard scouring protection technology is actually applied, the throwing and filling accuracy is poor, the protection effect is general, the barrel body can be damaged, and the barrel type foundation is of a thin-wall structure, so that the potential hazard is greater; the cylinder diameter of the cylinder type foundation is large, the protection range of the cylinder group foundation is wider, and the construction time and the material cost are greatly increased; the disadvantage of secondary scouring exists around the rigid protection, repeated construction can occur, and the subsequent maintenance cost is high. The existing bionic erosion protection technology utilizing grid concrete or rivet fixation is difficult to develop and apply in the field of offshore wind power due to the fact that a bottom fixing structure is complex, construction is inconvenient, construction cost is high.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the cylindrical foundation intelligent bionic scouring protection technology which is flexible, easy to lay, small in structural damage and strong in durability.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a bionical protective structure that erodees of cylindric basis intelligence which characterized in that: the protection structure is formed by connecting bionic units;
the top layer of the bionic unit is a bionic grass bunch, the bottom end of the bionic grass bunch is sleeved inside the bundling pipe, the bundling pipe is fixedly connected with the fiber net layers through binding wires, two ends of each fiber net layer are fixedly provided with connecting rings through the binding wires, and two adjacent fiber net layers are connected through the connecting rings;
and a seabed connecting structure used for fixing the whole protection structure is arranged at the bottom of the bionic unit.
Each bionic grass bundle consists of a plurality of bionic grass blades; the bionic grass blades are made of strip-shaped fiber materials.
The long strip-shaped fiber material is polyethylene or polypropylene; and every 5-10 bionic grass leaves form a bionic grass bundle.
The bundling tube adopts an open flexible thin tube; the binding wire is made of an anti-corrosion alloy material.
The fiber mesh layer is formed by interweaving transverse and vertical fiber ribbons, is in a three-dimensional grid shape and has a certain height.
The connecting ring is made of an anti-corrosion steel wire rope.
The seabed connecting structure comprises a bionic root system and a balancing weight; the bionic root system is bound with the fiber net layer through binding wires;
the bionic root system comprises a trunk and root hairs, a plurality of root hairs are uniformly distributed at each node of the trunk, and the root hairs are downwards provided with subdivision structures of a plurality of length grades.
The trunk and the root hair are both made of fiber materials;
the balancing weight is a cuboid concrete weight, heavy chains extending from inside to outside during manufacturing of the balancing weight are provided with four heavy chains, and the heavy chains are bound with the fiber net layer through binding wires.
The bionic units are connected through a connecting ring to form a bionic protection belt, and the specific arrangement form of the bionic protection belt is selected according to the required protection cylinder type basic form and is in an arc shape or a square frame shape;
the height of the bionic grass bunch on the upper portion of the bionic protection belt is customized according to the size of the common wave current at the position of the cylindrical foundation, aiming at the wave current in a special direction, the arrangement type of the bionic protection belt can be accurately adjusted according to an intelligent analysis and calculation result, the enhanced protection is realized, and the flow speed and the wave height of the wave current are ensured to be obviously reduced after the wave current passes through the bionic protection belt.
The application method of the cylindrical foundation intelligent bionic erosion protection structure comprises the following steps:
step one, obtaining basic protection parameters: acquiring specific foundation size, wave flow and geological parameters of a sea area where the cylindrical foundation to be protected is located;
step two, calculating concrete construction parameters: determining the arrangement type of the bionic protection belt and the height of the bionic grass bunch according to the size of the protection cylinder type foundation required in the step one and the sea condition of the sea area in which the bionic protection belt is located by an intelligent analysis and calculation system, judging whether the protection needs to be strengthened aiming at the waves in the specific direction, and calculating clear construction parameters;
step three, performing bionic unit connection preparation on land: after the automatic analysis and calculation of the calculation system in the second step are completed, connecting the bionic units into a bionic protection layer with a certain length on land, then hoisting the bionic protection layer to a construction ship, and transporting the bionic protection belt to a construction sea area by the construction ship;
step four, seabed pretreatment: excavating an embedded ditch at a position where a bionic protective layer is scheduled to be installed on a seabed;
step five, installing a bionic protective layer: and hoisting the bionic protection belt to an embedded ditch at a preset installation position by using a crane according to a calculation speed, adjusting the depth of the embedded ditch in real time by using a positioning device, and backfilling foundation soil to the height of the fiber net layer after the depth of the embedded ditch is adjusted in place until the laying of the bionic protection layer is finished.
The invention has the following beneficial effects:
1. the upper layer, the middle layer and the lower layer of the invention take flexible fiber materials as main bodies, have small impact on a cylindrical foundation structure, and solve the problem that hard protection causes the damage of an anticorrosive coating or a structure; the flexible bionic protection does not have the problem of secondary scouring in the rigid protection, and repeated construction is not needed.
2. According to the invention, foundation soil can be filled in the three-dimensional grid cushion layer of the lower layer, the root-imitating structure of the lower layer is easy to embed and construct, the construction efficiency is increased, and the problem that the conventional bionic protection structure is too complex and difficult to apply is solved; the middle and lower layers are integrated with the seabed foundation to play a role in reinforcing the ribs.
3. The invention is divided into an upper layer, a middle layer and a lower layer, the material mainly adopts durable and anticorrosive flexible fiber material, and the hard scouring protection of the prior riprap, sand bags and the like is replaced; the bottom of the artificial grass is mainly of a root-like structure and is assisted by a simple concrete fixing structure, so that the artificial grass can be fixed by rivets or lattice type concrete instead of the prior art.
4. The height of the bionic grass bunch on the upper part of the bionic protection belt is customized according to the size of the common wave flow at the position of the cylindrical foundation, and the arrangement type of the bionic protection belt can be accurately adjusted according to the intelligent analysis and calculation result aiming at the wave flow in a special direction, so that the enhanced protection is realized, and the flow speed and the wave height of the wave flow are ensured to be obviously reduced after the wave flow passes through the bionic protection belt.
5. The arrangement of the bionic protection belt can be in a circular arc shape or a square frame shape according to the protection basic form; the bionic protection belt is formed by splicing a plurality of protection units, so the type and the range of the bionic protection belt can be intelligently adjusted according to wave flow characteristics; the bionic protective layer is protected around the cylindrical foundation in a circular ring shape; and the seabed foundation soil is prevented from being washed by the wave flow.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of the overall structure of the protective structure of the present invention.
Fig. 2 is a partial structure view of the position of the connection ring according to the present invention.
Fig. 3 is a partial enlarged view of the protective structure of the present invention.
Fig. 4 is a top view of the protective structure arrangement of the present invention.
Fig. 5 is a schematic diagram of the protection principle of the protection structure in the operation process.
FIG. 6 is a flowchart of an intelligent analysis computing system in a method for implementing a protective structure according to the present invention.
Fig. 7 is a layout diagram of the protective structure of the present invention applied to a frequent wave stream.
Fig. 8 is a layout of the protective structure of the invention when applied to seasonal waves.
In the figure: 1. the bionic grass bundle comprises 2 parts of bionic grass bundles, 3 parts of binding wires, 4 parts of bundling pipes, connecting rings, 5 parts of fiber net layers, 6 parts of trunks, 7 parts of root hairs, 8 parts of balancing weights, 9 parts of heavy chains, 10 parts of barrel-shaped foundations, 11 parts of bionic protection belts, 12 parts of foundation soil, 13 parts of wave currents.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-8, an intelligent bionic erosion protection structure for a cylindrical foundation is formed by connecting bionic units; the uppermost layer of the bionic unit is a bionic grass bundle 1, the bottom end of the bionic grass bundle 1 is sleeved inside a bundling tube 3, the bundling tube 3 is fixedly connected with a fiber net layer 5 through a binding wire 2, two ends of the fiber net layer 5 are fixedly provided with a connecting ring 4 through a binding wire, and two adjacent fiber net layers 5 are connected through the connecting ring 4; and a seabed connecting structure used for fixing the whole protection structure is arranged at the bottom of the bionic unit. Through adopting foretell protective structure, it adopts upper, middle and lower three-layer, replaces hard scour protection such as traditional throwing stone, sand bag. The difficult problem that the hard protection can cause the damage of the anticorrosive coating or the structure is solved.
Furthermore, each bionic grass bundle 1 consists of a plurality of bionic grass blades; the bionic grass blades are made of strip-shaped fiber materials. Through adopting foretell bionical grass bundle 1 it can float under the wave effect, and then cushion the impact of wave, played fine scour prevention effect.
Further, the long strip-shaped fiber material is polyethylene or polypropylene; and every 5-10 bionic grass leaves form a bionic grass bundle 1. The wave-shaped floating net is made of polyethylene or polypropylene materials, is of a flexible structure, and can float along with waves.
Furthermore, the bundling tube 3 is an open flexible thin tube; the binding wire 2 is made of an anti-corrosion alloy material. The bundling tube 3 can be used for reliably connecting the bionic grass bundle 1, and the problem of falling off of the bionic grass bundle is prevented.
Further, the fiber mesh layer 5 is formed by interweaving transverse and vertical fiber ribbons, is in a three-dimensional grid shape and has a certain height. By adopting the three-dimensional reticular fiber net layer 5, foundation soil can be filled, and the fixing reliability of the whole bionic grass bundle 1 is enhanced. In addition, the three-dimensional net shape is adopted, so that good protection and anti-scouring effects can be achieved for the seabed. The protection effect is enhanced.
Further, the connecting ring 4 is made of an anti-corrosion steel wire rope. The anti-corrosion steel wire rope has a good anti-corrosion effect, so that the service life of the anti-corrosion steel wire rope is prolonged, and the reliability of connection is ensured.
Further, the seabed connecting structure comprises a bionic root system and a balancing weight 8; the bionic root system is bound with the fiber net layer 5 through binding wires; the bionic root system comprises a trunk 6 and root hairs 7, a plurality of root hairs 7 are uniformly distributed at each node of the trunk 6, and the root hairs 7 are downwards provided with subdivision structures with a plurality of length grades; the trunk 6 and the root hairs 7 are both fiber materials. The bottom of the artificial grass root system is mainly provided with a bionic root system structure, and a simple concrete fixing structure is used as an auxiliary structure, so that the artificial grass can be fixed by rivets or lattice type concrete instead of the traditional method. And then simplified the fixed work progress in bottom, reduced the construction degree of difficulty. The bionic root system enhances the fixing effect on the whole fiber net layer 5, so that the bionic root system can be reliably fixed on the seabed.
Further, the balancing weight 8 is a cuboid concrete weight, heavy chains 9 extending from inside to outside are arranged when the balancing weight 8 is manufactured, each balancing weight 8 is provided with four heavy chains 9, and the heavy chains 9 are bound with the fiber net layer 5 through binding wires. The connection effect between the seabed connecting structure and the seabed is improved to a certain extent through the balancing weight 8.
Further, the bionic units are connected through a connecting ring 4 to form a bionic protection belt 11, the specific arrangement form of the bionic protection belt 11 is selected according to the type of the required protection cylinder type foundation 10, and the specific arrangement form is in a circular arc shape or a square frame shape. Different combination types are selected for use, so that different protection requirements can be met. The adaptability is enhanced.
Furthermore, the height of the bionic grass bunch 1 at the upper part of the bionic protection belt 11 is customized according to the size of the common wave stream 13 at the position of the cylindrical foundation 10, and aiming at the wave stream in a special direction, the arrangement type of the bionic protection belt 11 can be accurately adjusted according to an intelligent analysis and calculation result, so that the enhanced protection is realized, and the flow speed and the wave height of the wave stream 13 can be obviously reduced after passing through the bionic protection belt 11.
Example 2:
the application method of the cylindrical foundation intelligent bionic erosion protection structure comprises the following steps:
step one, obtaining basic protection parameters: acquiring specific foundation size, wave flow and geological parameters of a sea area where the cylindrical foundation 10 to be protected is located;
step two, calculating concrete construction parameters: determining the arrangement type of the bionic protection belt 11 and the height of the bionic grass bundle 1 according to the size of the protection cylinder type foundation required in the step one and the sea condition of the sea area in which the bionic protection belt is located by an intelligent analysis and calculation system, judging whether the protection needs to be strengthened aiming at the waves in the specific direction, and calculating clear construction parameters;
step three, performing bionic unit connection preparation on land: after the automatic analysis and calculation of the calculation system in the second step are completed, connecting the bionic units into a bionic protection layer 11 with a certain length on land, then hoisting the bionic protection layer 11 to a construction ship, and transporting the bionic protection belt 11 to a construction sea area by the construction ship;
step four, seabed pretreatment: excavating an embedded ditch at a position where the bionic protection layer 11 is scheduled to be installed on the seabed;
step five, installing a bionic protective layer 11: and (3) hoisting the bionic protection belt 11 to an embedded ditch at a preset installation position by using a crane according to a calculation rate, adjusting the depth of the embedded ditch in real time by using a positioning device, and backfilling foundation soil to the height of the fiber net layer 5 after the depth of the embedded ditch is adjusted in place until the laying of the bionic protection belt 11 is finished.
Example 3:
referring to fig. 7, when there is a frequent wave flow on one side, the cylindrical foundation 10 is protected by additionally arranging the outer-layer arc-shaped bionic protection belt 11 on the side where the frequent wave flow exists, and finally the optimal protection effect is achieved.
Example 4:
referring to fig. 8, when seasonal waves flow, an outer-layer arc-shaped bionic protection belt 11 is additionally arranged on the outer ring of the side where the seasonal waves flow, so that the cylindrical foundation 10 is protected, and finally the optimal protection effect is achieved.
Claims (10)
1. The utility model provides a bionical protective structure that erodees of cylindric basis intelligence which characterized in that: the protection structure is formed by connecting bionic units;
the uppermost layer of the bionic unit is a bionic grass bundle (1), the bottom end of the bionic grass bundle (1) is sleeved inside a bundling pipe (3), the bundling pipe (3) is fixedly connected with a fiber net layer (5) through a binding wire (2), two ends of the fiber net layer (5) are fixedly provided with a connecting ring (4) through the binding wire, and two adjacent fiber net layers (5) are connected through the connecting ring (4);
and a seabed connecting structure used for fixing the whole protection structure is arranged at the bottom of the bionic unit.
2. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: each bionic grass bundle (1) consists of a plurality of bionic grass blades; the bionic grass blades are made of strip-shaped fiber materials.
3. The cylindrical basic intelligent bionic erosion protection structure as claimed in claim 2, wherein: the long strip-shaped fiber material is polyethylene or polypropylene; and every 5-10 bionic grass leaves form a bionic grass bundle (1).
4. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: the bundling tube (3) adopts an open flexible thin tube; the binding wire (2) is made of an anti-corrosion alloy material.
5. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: the fiber mesh layer (5) is formed by interweaving transverse and vertical fiber ribbons, is in a three-dimensional grid shape and has a certain height.
6. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: the connecting ring (4) is made of an anti-corrosion steel wire rope.
7. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: the seabed connecting structure comprises a bionic root system and a balancing weight (8); the bionic root system is bound with the fiber net layer (5) through binding wires;
bionic root system includes trunk (6) and root hair (7), a plurality of root hair (7) of trunk (6) each node equipartition, root hair (7) have the subdivision structure of a plurality of length grades downwards.
8. The cylindrical basic intelligent bionic erosion protection structure of claim 7, wherein: the trunk (6) and the root hairs (7) are both made of fiber materials;
the balancing weight (8) is a cuboid concrete weight, heavy chains (9) extending from inside to outside during manufacturing of the balancing weight (8), each balancing weight (8) is provided with four heavy chains (9), and the heavy chains (9) are bound with the fiber net layer (5) through binding wires.
9. The cylindrical basic intelligent bionic erosion protection structure of claim 1, wherein: the bionic units are connected through a connecting ring (4) to form a bionic protective belt (11), the specific arrangement form of the bionic protective belt (11) is selected according to the type of a required protective cylinder type foundation (10), and an arc shape or a square frame shape is selected;
the height of the bionic grass bunch (1) at the upper part of the bionic protection belt (11) is customized according to the size of a common wave stream (13) at the position of the cylindrical foundation (10), and the arrangement type of the bionic protection belt (11) can be accurately adjusted according to an intelligent analysis calculation result aiming at the wave stream in a special direction, so that the enhanced protection is realized, and the flow speed and the wave height of the wave stream (13) can be obviously reduced after the wave stream passes through the bionic protection belt (11).
10. The application method of the cylindrical basic intelligent bionic erosion protection structure of any one of claims 1 to 9, which is characterized by comprising the following steps:
step one, obtaining basic protection parameters: acquiring specific foundation size, wave flow and geological parameters of a sea area where the cylindrical foundation (10) to be protected is located;
step two, calculating concrete construction parameters: determining the arrangement type of the bionic protection belt (11) and the height of the bionic grass bundle (1) through an intelligent analysis and calculation system according to the size of the protection cylinder type foundation required in the step one and the sea condition of the sea area, judging whether the protection needs to be strengthened aiming at the waves in the specific direction, and calculating clear construction parameters;
step three, performing bionic unit connection preparation on land: after the automatic analysis and calculation of the calculation system in the second step are completed, connecting the bionic units into a bionic protection layer (11) with a certain length on land, then hoisting the bionic protection layer to a construction ship, and transporting the bionic protection belt (11) to a construction sea area by the construction ship;
step four, seabed pretreatment: excavating an embedded ditch at a position where a bionic protective layer (11) is scheduled to be installed on a seabed;
fifthly, installing a bionic protective layer (11): and (3) hoisting the bionic protection belt (11) to an embedded ditch at a preset installation position by using a crane according to a calculation rate, adjusting the depth of the embedded ditch in real time by using a positioning device, and backfilling foundation soil to the height of the fiber net layer (5) after the embedded ditch is adjusted in place until the laying of the bionic protection belt (11) is finished.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111250197.0A CN113914358B (en) | 2021-10-26 | 2021-10-26 | Intelligent bionic scouring protection structure for cylindrical foundation and application method of intelligent bionic scouring protection structure |
| PCT/CN2022/081825 WO2023071034A1 (en) | 2021-10-26 | 2022-03-18 | Intelligent bionic scouring protection structure for bucket foundation and application method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111250197.0A CN113914358B (en) | 2021-10-26 | 2021-10-26 | Intelligent bionic scouring protection structure for cylindrical foundation and application method of intelligent bionic scouring protection structure |
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| CN113914358A true CN113914358A (en) | 2022-01-11 |
| CN113914358B CN113914358B (en) | 2022-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023071034A1 (en) * | 2021-10-26 | 2023-05-04 | 中国长江三峡集团有限公司 | Intelligent bionic scouring protection structure for bucket foundation and application method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071034A1 (en) * | 2021-10-26 | 2023-05-04 | 中国长江三峡集团有限公司 | Intelligent bionic scouring protection structure for bucket foundation and application method therefor |
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| Publication number | Publication date |
|---|---|
| CN113914358B (en) | 2022-12-06 |
| WO2023071034A1 (en) | 2023-05-04 |
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