CN116377953B - Offshore wind power pile surrounding concrete slab hinge sinking bar and construction method thereof - Google Patents
Offshore wind power pile surrounding concrete slab hinge sinking bar and construction method thereof Download PDFInfo
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- CN116377953B CN116377953B CN202310319098.6A CN202310319098A CN116377953B CN 116377953 B CN116377953 B CN 116377953B CN 202310319098 A CN202310319098 A CN 202310319098A CN 116377953 B CN116377953 B CN 116377953B
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000004804 winding Methods 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000009189 diving Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009991 scouring Methods 0.000 abstract description 9
- 239000013049 sediment Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/121—Devices for applying linings on banks or the water bottom
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
- E02B3/123—Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of stone, concrete or similar stony material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The application discloses a concrete slab hinge sinking bar around an offshore wind power pile and a construction method thereof, wherein the concrete slab hinge sinking bar comprises a plurality of sinking bar units which are mutually spliced, and a preformed hole for a pile foundation to pass through is formed in the plurality of sinking bar units which are mutually spliced; the sinking unit comprises a plurality of concrete plates which are vertically and horizontally arranged, and the adjacent concrete plates are connected with each other through pull ropes. The application can reduce the gap between the sunk concrete slab hinge row and the pile foundation after sinking and improve the anti-scouring effect of the sunk concrete slab hinge row.
Description
Technical Field
The application relates to the field of offshore wind power pile construction, in particular to a concrete slab hinge sinking bar around an offshore wind power pile and a construction method thereof.
Background
At present, concrete hinge rows are protection entities formed by connecting concrete slabs by utilizing hinges, and the method can adapt to the change of terrain and cling to a bank slope or a river bed so as to play a role in resisting scouring. The concrete slab hinge submerged raft has the advantages of high strength, strong integrity, good scour resistance, high construction speed, high flexibility in pouring, underwater construction, moderate manufacturing cost and the like, and is a good substitute especially under the condition of rare stone throwing materials. However, when the concrete slab hinge sinking bar is constructed in the sea far away from the shore, the concrete slab hinge sinking bar is not easy to sink in place, and under the condition that a pile foundation is completed, a large gap exists between the concrete slab hinge sinking bar and the pile foundation after sinking, and the periphery of a foundation pile is easy to form reflux, vortex and the like, sand at the gap is flushed away, and the anti-scouring effect of the concrete slab hinge sinking bar is reduced.
With respect to the related art in the above, the applicant believes that the following drawbacks exist: under the condition that the pile foundation is completed, a larger gap exists between the sunk row of the concrete slab hinge and the pile foundation after the sunk row of the concrete slab hinge is sunk, and the anti-scouring effect of the sunk row of the concrete slab hinge is reduced.
Disclosure of Invention
The application provides a surrounding concrete slab hinge submerged raft of an offshore wind power pile and a construction method thereof, which aim to reduce the gap between the submerged concrete slab hinge submerged raft and a pile foundation and improve the anti-scouring effect of the concrete slab hinge submerged raft.
According to the first aspect, the technical scheme of the offshore wind power pile surrounding concrete slab hinge sinking bar is as follows:
the concrete slab hinge sinking bar comprises a plurality of sinking bar units which are spliced with each other, wherein a reserved hole for a pile foundation to pass through is formed in the plurality of sinking bar units which are spliced with each other; the sinking unit comprises a plurality of concrete plates which are vertically and horizontally arranged, and the adjacent concrete plates are connected with each other through pull ropes.
Through adopting above-mentioned technical scheme, through the setting of preformed hole, establish the preformed hole cover outside the pile foundation when sinking, keep concrete slab hinge sinking row to press close to the pile foundation, can avoid the hindrance of pile foundation to concrete slab hinge sinking row simultaneously, reduce concrete slab hinge sinking row after sinking and pile foundation between the clearance, improve the anti-scour effect of concrete slab hinge sinking row.
In a second aspect, the construction method of the circumferential concrete slab hinge sinking bar of the offshore wind power pile provided by the application adopts the following technical scheme:
a construction method of a concrete slab hinge sinking bar around an offshore wind power pile comprises the following steps:
prefabricating a sinking unit: the stay ropes are connected into a grid-shaped rope net which is buried in a concrete slab for casting, and the concrete is coagulated to obtain a sinking unit;
spreading and sinking unit: adopting two sunken raft vessels to assist in construction, installing reels on the sunken raft vessels, rolling the arrangement with required width on the reels, starting the reels to manually pull the arrangement to the set position of a slide plate of the sunken raft vessels, lifting the sunken raft units to the arrangement, placing concrete plates at the designated positions on the arrangement according to design requirements, binding the ribs on the arrangement with the concrete plates firmly, and connecting the adjacent sunken raft units firmly;
a sediment row unit connected with two sediment row boats: driving sliding plates of two sunken ship to butt joint each other, cutting a notch in the middle of the row head of the first sunken unit of the two sunken ship, butt-jointing the first sunken unit of the two sunken ship, forming a preformed hole by the two butt-jointed notches, and firmly connecting half of the butt joint position of the sunken unit of the two sunken ship far from the foundation pile to the preformed hole;
and (3) connecting foundation piles: starting reels on two sunken ships to cooperate with manual release arrangement, driving the two sunken ships to move back to the same time, enabling the distance between sliding plates of the two sunken ships to be larger than the diameter of a pile foundation, keeping the sunken ship above the sea surface, then moving the two sunken ships synchronously towards the direction of the foundation pile, moving reserved holes of the sunken ship to the foundation pile, and manually connecting the rest parts of the butt joint positions of the sunken ship units of the two sunken ships firmly;
sinking arrangement: starting the reels on the two submerged rows of ships to cooperate with manual release arrangement, and adjusting the sliding plates to a proper angle so that the submerged rows of units close to the foundation piles sink into the seabed under the action of dead weight; and then driving the two sunken ship to move back to enable the sunken unit to gradually sink outwards from the foundation pile to the seabed.
By adopting the technical scheme, two sunken ships are adopted for auxiliary construction, the sunken units can be tensioned towards two sides, so that the sunken units are suspended above the sea surface, the butt joint of the sunken units on the two sunken ships is connected with one half of the sunken units to the reserved hole, the other half of the sunken units is reserved for a foundation pile to enter the reserved hole, after the foundation pile enters the reserved hole, the remaining half of the sunken units are connected, the connected sunken units surround the foundation pile and are clung to the foundation pile, and the gap between the sunken units and the foundation pile is small; and the pile foundation can position and limit the sinking of the sinking unit, the concrete slab hinge sinking bar sinks outwards from the foundation pile, the sinking precision of the concrete slab hinge sinking bar is convenient to control, the sinking precision is high, the sinking quality of the sinking unit close to the foundation pile can be improved, and the anti-scouring effect of the concrete slab hinge sinking bar is improved.
Preferably, after the sinking unit is connected with the foundation pile, the two side edges of the sinking unit are respectively connected with floating balls, and the floating balls are continuously connected to the two side edges of the sinking unit in the sinking process, so that the two side edges of the sinking unit are kept floating on the water surface in the sinking process.
By adopting the technical scheme, the floating balls are used for keeping the two side edges of the submerged unit in the sea to float on the water surface, so that the width of the submerged unit can be widened conveniently.
Preferably, after the two submerged boats move back to release the submerged units with set length, cutting and arranging the submerged units so that the middle of the tail parts of the submerged units are submerged into the seabed, and finally widening the submerged units in the sea.
By adopting the technical scheme, after the two sunken ship release the sunken units, the sunken ship release device can be used for widening the sunken units again, so that the number of the input sunken ships is reduced, and the cost is reduced; after the extension of the sinking unit is completed, the sinking unit is widened, so that interference during simultaneous construction of extension and widening of the sinking unit can be reduced.
Preferably, the method for widening the sinking unit comprises the following steps: the sinking ship with the sinking units paved moves to one side of the sinking unit in the sea around the foundation pile, so that a slide plate of the sinking ship is positioned above one side of the sinking unit in the sea, a winding drum on the sinking ship is started to be matched with manual release arrangement, the slide plate is adjusted to a proper angle, the sinking unit on the slide plate is lowered to the sea surface under the action of dead weight, then the row head of the lowered sinking unit and the side of the sinking unit in the sea are manually connected firmly, floating balls on the side of the sinking unit in the sea are removed, and sinking operation is performed until the width of the sinking unit around the foundation pile reaches the design requirement.
By adopting the technical scheme, the row head of the sinking unit on the sinking ship is lowered to the sea surface and is in butt joint with the side edge of the sinking unit in the sea, the sinking unit is not required to be moved during connection, the sinking unit on the sinking ship and the sinking unit in the sea are convenient to connect, and after the floating ball is removed, the sinking unit on the sinking ship and the sinking unit in the sea are connected together to slowly sink into the sea.
Preferably, a plurality of submerged boats are adopted to widen the submerged units simultaneously, two adjacent submerged boats are staggered mutually, after all the submerged units are widened to reach a set value and are submerged into the seabed, the widened submerged units are connected firmly with each other by manually submerged into the seabed, and the submerged units are connected firmly with foundation piles.
By adopting the technical scheme, as the length of the submerged array units in the sea is longer, and the floating balls are required to be removed after widening, a plurality of submerged array vessels are required to widen all submerged array units simultaneously during widening, and two adjacent submerged array vessels are staggered to avoid the mutual interference of the two adjacent submerged array vessels.
Preferably, after the sinking and discharging is completed, the edge of the sinking and discharging unit is subjected to a stone throwing operation, and the edge of the sinking and discharging unit is fixed.
By adopting the technical scheme, the edges of the sinking and discharging units are pressed by the stones so as to prevent the edges of the sinking and discharging units from being washed.
Preferably, the outer side of the slide plate of the sediment vessel is provided with a semicircular groove, the diameter of the semicircular groove is larger than that of the foundation pile, a semicircular plate is installed in the semicircular groove, one side of the semicircular plate is hinged to the slide plate, the other side of the semicircular plate is connected with the slide plate through a lock cylinder and a lock catch, in the step of connecting the foundation pile, after a reserved hole of the sediment unit is moved to the foundation pile, the semicircular plate is opened, two sediment vessels are driven to be close to each other, the foundation pile is sleeved in the semicircular groove of the two sediment vessels, the sediment units on the two sediment vessels are made to be close to each other, and the rest parts of the butt joint positions of the sediment units on the two sediment vessels are firmly connected with each other.
By adopting the technical scheme, the arrangement of the semicircular groove can enable the two mattress boats to be close to each other, so that mattress units on the two mattress boats are close to each other, and workers can conveniently and firmly connect the mattress units on the two mattress boats to each other.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through the arrangement of the reserved holes, the reserved holes are sleeved outside the pile foundation when sinking, so that the concrete slab hinge sinking bar is kept close to the pile foundation, meanwhile, the obstruction of the pile foundation to the concrete slab hinge sinking bar can be avoided, the gap between the concrete slab hinge sinking bar and the pile foundation after sinking is reduced, and the anti-scouring effect of the concrete slab hinge sinking bar is improved;
2. the two sunken ship are adopted for auxiliary construction, the sunken units can be tensioned towards two sides, so that the sunken units are suspended above the sea surface, one half of the butt joint positions of the sunken units on the two sunken ship are connected to the reserved holes, the other half of the butt joint positions are reserved for the foundation piles to enter the reserved holes, the foundation piles enter the reserved holes, the remaining half of the sunken units are connected, the connected sunken units surround the foundation piles and are tightly attached to the foundation piles, and the gap between the sunken units and the foundation piles is small; and the pile foundation can position and limit the sinking of the sinking unit, the concrete slab hinge sinking bar sinks outwards from the foundation pile, the sinking precision of the concrete slab hinge sinking bar is convenient to control, the sinking precision is high, the sinking quality of the sinking unit close to the foundation pile can be improved, and the anti-scouring effect of the concrete slab hinge sinking bar is improved.
Drawings
FIG. 1 is a schematic diagram of a concrete slab hinge submerged array around an offshore wind pile according to the embodiment of the application.
FIG. 2 is a block flow diagram of a method for constructing a concrete slab hinge sinker around an offshore wind pile according to an embodiment of the application.
FIG. 3 is a schematic operation diagram of a method for constructing a concrete slab hinged submerged array around a wind power pile at sea and a step of connecting the submerged array units on two submerged array vessels according to an embodiment of the present application.
FIG. 4 is a schematic diagram of the operation of driving two sunken ships to move back in the step of connecting foundation piles in the construction method of the concrete slab hinge sunken ship around the offshore wind power pile according to the embodiment of the application.
Fig. 5 is a schematic diagram of a reserved hole sleeved outside a foundation pile in the step of connecting the foundation pile in the construction method of the circumferential concrete slab hinge sinking arrangement of the offshore wind power pile according to the embodiment of the application.
Reference numerals illustrate:
1. a sinking and discharging unit; 11. a concrete slab; 12. a preformed hole; 13. a pull rope; 2. sinking and arranging a ship; 3. a reel; 4. arranging; 5. a slide plate; 6. and (5) foundation piles.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment of the application discloses a concrete slab hinge sinking bar around an offshore wind power pile and a construction method thereof.
Referring to fig. 1, a concrete slab hinge submerged array around a wind power pile at sea comprises a plurality of submerged array units 1 which are spliced with each other, wherein a preformed hole 12 for a pile foundation to pass through is arranged in the submerged array units 1 which are spliced with each other, and the preformed hole 12 is arranged at the joint of two submerged array units 1 and is arranged in half of the two submerged array units 1 respectively. The submerged unit 1 comprises a plurality of concrete slabs 11 arranged in a longitudinal and transverse manner 4, and the adjacent concrete slabs 11 are connected with each other through a stay rope 13.
The concrete slab 11 is made of C25 concrete. The concrete slab 11 had a circular planar shape with a diameter of 36cm and a thickness of 10cm, and a single concrete slab 11 weighed 26.39kg. The prefabrication adopts phi 12mm anti-aging polypropylene ropes connected into a grid-shaped rope net buried in the concrete plates 11 for casting, the phi 12mm anti-aging polypropylene ropes are pull ropes 13, 80 concrete plates 11 are connected together to form a mattress unit 1, the size is 3860 multiplied by 4860 multiplied by 100mm, and the longitudinal and transverse spacing between the concrete plates 11 is 140mm.
The implementation principle of the concrete slab hinge sinking row around the offshore wind power pile provided by the embodiment of the application is as follows: through the setting of preformed hole 12, after connecting preformed hole 12 department outside foundation pile 6, with the sinker unit 1 firm in connection of preformed hole 12 department again, then use foundation pile 6 as the location to sink concrete slab hinge sinker, can improve concrete slab hinge sinker's precision of sinking, keep concrete slab hinge sinker to press close to the pile foundation simultaneously, reduce the clearance between concrete slab hinge sinker and the pile foundation after sinking, improve concrete slab hinge sinker's scour protection effect.
Referring to fig. 2, the embodiment of the application also discloses a construction method of the offshore wind power pile surrounding concrete slab hinge sink, which comprises the following steps:
prefabricating a sinking bar unit 1: the stay ropes 13 are connected into a frame-shaped rope net to be buried in the concrete slab 11 for casting, the casting of the concrete slab 11 is assisted by a casting mold, a reserved ring is pre-buried in the concrete slab 11, the concrete is coagulated to obtain the submerged unit 1, and the edge of the prefabricated submerged unit 1 is reserved with the stay ropes 13 with a certain length, so that the connection between the submerged units 1 is facilitated. After prefabrication of the sinking unit 1 is completed, the sinking unit is transported to a construction site by adopting a transport ship.
A row-spreading and sinking unit 1: referring to fig. 3, two sunken ship 2 are adopted for auxiliary construction, initial positions of the two sunken ship 2 are arranged in the upstream direction of a foundation pile 6, a winding drum 3 is installed on the sunken ship 2, an arrangement 4 with a required width is wound on the winding drum 3, and the winding drum 3 is started to pull the arrangement 4 to a set position of a sliding plate 5 of the sunken ship 2 in cooperation with manual work. Then the sinking unit 1 is hoisted to the arrangement 4 of the sinking ship 2 from the transport ship, the concrete plates 11 are placed at the designated positions on the arrangement 4 according to the design requirement, and the ribs on the arrangement 4 are firmly bound with the reserved rings on the concrete plates 11. Adjacent caisson units 1 are mutually firmly bound through the stay ropes 13 reserved at the edges.
The sediment row unit 1 on two sediment rows of ships 2 is connected: referring to fig. 3, the two sunken ship 2 are driven to approach each other such that the outer sides of the skids 5 of the two sunken ship 2 are butted with each other, and a notch is cut in the middle of the head of the first sunken unit 1 on the two sunken ship 2, respectively, and the notches of the sunken units 1 on the two sunken ship 2 are butted to form the reserved hole 12. Then the first submerged units 1 on the two submerged vessels 2 are butted, so that the notches of the submerged units 1 on the two submerged vessels 2 are butted to form a reserved hole 12, then one half of the butted position of the submerged units 1 on the two submerged vessels 2, which is far away from the foundation pile 6, is fixedly tied to the reserved hole 12 through a stay rope 13 reserved at the edge of the submerged units 1, and the other half is connected in a slipknot through a stay rope 13 reserved at the edge of the submerged units 1.
And (3) connecting foundation piles 6: referring to fig. 4 and 5, the reels 3 on the two sunken ships 2 are started to cooperate with the manual release arrangement 4, and simultaneously the two sunken ships 2 are driven to move back to the ground, so that the distance between the outer sides of the skids 5 of the two sunken ships 2 is larger than the diameter 2m of the pile foundation, the reels 3 are always tensioned to the arrangement 4, the outer sides of the skids 5 are kept at a position 2m above the sea surface, and the sunken unit 1 is kept above the sea surface. The two sunken ship 2 then move synchronously and at the same speed in the direction of the foundation pile 6 and keep the butt joint of the sunken units 1 on the two sunken ship 2 aligned with the foundation pile 6. Workers are arranged upstream and downstream of the foundation piles 6, respectively, and are stabilized above the sea surface by the inflatable boat. When the sinker unit 1 moves to the foundation pile 6 along with the two sinker boats 2, a worker positioned at the upstream of the foundation pile 6 sequentially unloads the slipknots at the butt joint positions of the sinker units 1 on the two sinker boats 2 from the downstream to the upstream, and the worker positioned at the downstream of the foundation pile 6 sequentially reclasses the butt joint positions of the sinker units 1 on the two sinker boats 2 firmly until the reserved holes 12 of the sinker units 1 move to the foundation pile 6, and the reserved holes 12 are sleeved outside the foundation pile 6.
Sinking arrangement: the reels 3 on the two sunken ship 2 are started to cooperate with manual release arrangement 4, and the slide plates 5 are adjusted to a proper angle, so that the sunken ship units 1 close to the foundation piles 6 sink into seawater under the action of dead weight, and then the two sunken ship 2 are driven to move back to the ground, so that the sunken ship units 1 gradually sink outwards from the foundation piles 6 into the sea bed surface. When the arrangement 4 on the winding drum 3 is 3-4m, the arrangement 4 on the winding drum 3 is completely withdrawn and is wound into the other winding arrangement 4, the two arrangements 4 are connected end to end by using a tie strip, the connection strength is not lower than 80% of the design tensile strength, and then the winding arrangement 4 is wound up by the winding drum 3, the construction is continued until the length of the submerged sinking unit 1 reaches the design requirement. When the sink row unit 1 is constructed to the tail end, the nylon rope meeting the strength requirement is wound into the winding drum 3, meanwhile, the other end is connected with the arrangement 4, then the nylon rope is wound up by the winding drum 3, the ribs on the arrangement 4 are cut off by the scissors, the tail end of the sink row unit 1 is slowly sunk into the sea floor by utilizing the dead weight of the sink row unit 1, finally, the nylon rope is cut off, and the nylon rope pulls the tail end of the sink row unit 1, so that the tail end of the sink row unit 1 can be uniformly sunk and cling to the sea floor.
After the sinking unit 1 is connected with the foundation pile 6, floating balls are respectively bound on two side edges of the sinking unit 1, and the floating balls are sequentially bound on the two side edges of the sinking unit 1 in the sinking process, so that the two side edges of the sinking unit 1 are kept floating on the water surface in the sinking process through the floating balls. After the two sunken ship (2) move back to release the sunken unit (1) with set length, the arrangement (4) is cut off, so that the middle of the tail part of the sunken unit (1) is sunk into the seabed.
The embodiment further comprises a step of widening the submerged row units 1, which step of widening the submerged row units 1 is performed after the length of the submerged row units 1 reaches the design requirements. The method comprises the following steps: the submerged ship 2 paved with the submerged units 1 moves to one side of the submerged units 1 around the foundation pile 6, so that the sliding plate 5 of the submerged ship 2 is positioned above one side of the submerged units 1, the winding drum 3 on the submerged ship 2 is restarted to be matched with the manual release arrangement 4, the sliding plate 5 is adjusted to a proper angle, the submerged units 1 on the sliding plate 5 are lowered to the sea surface under the action of dead weight, and the outer side of the sliding plate 5 is kept at a position 2m above the sea surface. And then the worker enters the lower part of the sliding plate 5 through the inflatable boat, the row head of the descending submerged row unit 1 and the side edge of the submerged row unit 1 in the sea are firmly bound with each other, and the floating balls of the submerged row unit 1 in the sea on the side edge are sequentially removed. Finally, the sinking operation is carried out until the width of the sinking unit 1 around the foundation pile 6 reaches the design requirement. The widening of the counter units 1 may be performed on one side or on both sides.
The method comprises the steps that a plurality of submerged boats 2 are adopted to widen the submerged units 1 at the same time, two adjacent submerged boats 2 are staggered in the upstream and downstream directions, interference between two adjacent submerged boats 2 is avoided, after all submerged units 1 are widened to reach a set value and are submerged in the seabed, the widened submerged units 1 are connected firmly with each other by manually submerging the seabed, and foundation piles 6 are connected firmly with the submerged units 1.
After all the sinking units 1 sink into the seabed surface, the edge of the sinking unit 1 is subjected to stone throwing operation, the edge of the sinking unit 1 is pressed by stones, and the edge of the sinking unit 1 is fixed so as to prevent the edge of the sinking unit 1 from being washed.
In another embodiment, a semicircular groove is formed in the outer side of the sliding plate 5 of the sunken ship 2, the diameter of the semicircular groove is larger than that of the foundation pile 6, a semicircular plate is installed in the semicircular groove, one side of the semicircular plate is hinged to the sliding plate 5, the other side of the semicircular plate is connected with the sliding plate 5 through a lock cylinder and a lock catch, in the step of connecting the foundation pile 6, after the reserved hole 12 of the sunken ship unit 1 is moved to the foundation pile 6, the semicircular plate is opened, the two sunken ships 2 are driven to be close to each other, the foundation pile 6 is sleeved in the semicircular grooves of the two sunken ships 2, the sunken ship units 1 on the two sunken ships 2 are made to be close to each other, and the rest parts of the butt joint positions of the sunken ship units 1 on the two sunken ships 2 are connected firmly. The semicircular grooves can enable the two sunken ship 2 to approach each other at two sides of the foundation pile 6, so that workers downstream of the foundation pile 6 can firmly connect the sunken ship units 1 on the two sunken ship 2 with each other.
In the step of connecting the mattress units 1 on the two mattress carriers 2, the half of the butt joint positions of the mattress units 1 on the two mattress carriers 2 close to the foundation pile 6 may not be connected, and after the reserved holes 12 of the mattress units 1 are moved to the foundation pile 6, the reserved holes 12 are sleeved outside the foundation pile 6, and then the half of the mattress units 1 are firmly connected.
The implementation principle of the embodiment is as follows: the two sunken ship 2 are adopted for auxiliary construction, the sunken units 1 can be tensioned towards two sides, the sunken units 1 are suspended above the sea surface, the butt joint positions of the sunken units 1 on the two sunken ship 2 are firmly connected to the reserved holes 12, and the other half of the sunken ship is connected by adopting a slipknot, so that foundation piles 6 can be conveniently released and enter the reserved holes 12. After the foundation pile 6 enters the reserved hole 12, the other half of the sinking unit 1 is firmly connected, the connected sinking unit 1 surrounds the foundation pile 6 and clings to the foundation pile 6, the gap between the sinking unit 1 and the foundation pile 6 is small, and the anti-scouring effect of the concrete slab hinge sinking is improved. And the pile foundation can position and limit the sinking of the sinking unit 1, the concrete slab hinge sinking bar sinks outwards from the foundation pile 6, the sinking precision of the concrete slab hinge sinking bar is convenient to control, the sinking precision is high, and the sinking quality of the sinking unit 1 close to the foundation pile 6 can be improved.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (4)
1. The construction method of the offshore wind power pile peripheral concrete slab hinge sinking bar is characterized by comprising a plurality of sinking bar units (1) which are spliced with each other, wherein a reserved hole (12) for a pile foundation to pass through is formed in the plurality of sinking bar units (1) which are spliced with each other; the sinking unit (1) comprises a plurality of concrete plates (11) which are vertically and horizontally arranged (4), and the adjacent concrete plates (11) are connected with each other through stay ropes (13);
the method also comprises the following steps:
prefabricating a sinking row unit (1): the stay ropes (13) are connected into a lattice-shaped rope net which is buried in the concrete slab (11) for casting, and the concrete is coagulated to obtain a sinking unit (1);
the laying and sinking unit (1): adopting two sunken ship (2) to assist in construction, installing a winding drum (3) on the sunken ship (2), winding the arrangement (4) with required width on the winding drum (3), starting the winding drum (3) to manually pull the arrangement (4) to a set position of a sliding plate (5) of the sunken ship (2), lifting the sunken unit (1) to the arrangement (4), placing the concrete plate (11) at a designated position on the arrangement (4) according to design requirements, binding the ribs on the arrangement (4) with the concrete plate (11) firmly, and connecting adjacent sunken units (1) firmly with each other;
a sinking unit (1) connected with two sinking ships (2): driving sliding plates (5) of two sunken ships (2) to be mutually butted, cutting a notch in the middle of the row heads of the first sunken unit (1) on the two sunken ships (2), butting the first sunken unit (1) on the two sunken ships (2), forming a reserved hole (12) by the two butted notches, and firmly connecting half of the butted position of the sunken units (1) on the two sunken ships (2) far away from a foundation pile (6) to the reserved hole (12);
connecting foundation piles (6): starting the reels (3) on the two sunken ships (2) to cooperate with manual release arrangement (4), driving the two sunken ships (2) to move back to ensure that the distance between the sliding plates (5) of the two sunken ships (2) is larger than the diameter of a pile foundation, keeping the sunken ship (1) above the sea surface, then synchronously moving the two sunken ships (2) towards the direction of the foundation pile (6), moving the reserved holes (12) of the sunken ship (1) to the foundation pile (6), and manually connecting the rest parts of the butt joint positions of the sunken ship (1) on the two sunken ships (2) firmly;
sinking arrangement: starting the reels (3) on the two sunken ship (2) to cooperate with manual release arrangement (4), and adjusting the sliding plates (5) to a proper angle so that the sunken unit (1) close to the foundation pile (6) sinks into the seabed under the action of dead weight; then, driving the two sunken ship (2) to move back to enable the sunken unit (1) to gradually sink into the seabed surface from the foundation pile (6);
after the sinking unit (1) is connected with the foundation pile (6), the two sides of the sinking unit (1) are respectively connected with floating balls, and the floating balls are continuously connected to the two sides of the sinking unit (1) in the sinking process, so that the two sides of the sinking unit (1) are kept floating on the water surface in the sinking process;
cutting off the arrangement (4) after the two submerged boats (2) move back to release the submerged units (1) with set length, so that the middle of the tail parts of the submerged units (1) sink to the seabed, and finally widening the submerged units (1) in the sea;
the method for widening the sinking unit (1) comprises the following steps: the sinking ship (2) paved with the sinking units (1) moves to one side of the sinking units (1) in the sea around the foundation pile (6), so that the sliding plate (5) of the sinking ship (2) is positioned above one side of the sinking units (1) in the sea, the winding drum (3) on the sinking ship (2) is started to be matched with the manual release arrangement (4), the sliding plate (5) is adjusted to a proper angle, the sinking units (1) on the sliding plate (5) are lowered to the sea surface under the action of dead weight, then the row heads of the lowered sinking units (1) are manually connected with the side of the sinking units (1) in the sea firmly, floating balls on the side of the sinking units (1) in the sea are removed, and the sinking operation is performed until the width of the sinking units (1) around the foundation pile (6) meets the design requirement.
2. The construction method of the offshore wind power pile surrounding concrete slab hinge sinking bar, which is characterized by comprising the following steps of: adopting a plurality of sunken ship (2) to widen simultaneously sunken unit (1), two adjacent sunken ship (2) stagger each other, after all sunken unit (1) widen and reach the setting value, and all sink into the seabed surface, the manual diving gets into seabed and will widen the sunken unit (1) interconnect firm after the, and will sunken unit (1) firm connection foundation pile (6).
3. The construction method of the offshore wind power pile surrounding concrete slab hinge sinking bar, which is characterized by comprising the following steps of: and after the sinking and discharging is finished, carrying out a stone throwing operation on the edge of the sinking and discharging unit (1), and fixing the edge of the sinking and discharging unit.
4. The construction method of the offshore wind power pile surrounding concrete slab hinge sinking bar, which is characterized by comprising the following steps of: the outer side of a slide plate (5) of the sunken ship (2) is provided with a semicircular groove, the diameter of the semicircular groove is larger than that of a foundation pile (6), a semicircular plate is arranged in the semicircular groove, one side of the semicircular plate is hinged with the slide plate (5), the other side of the semicircular plate is connected with the slide plate (5) through a lock cylinder and a lock catch, in the step of connecting the foundation pile (6), after a reserved hole (12) of a sunken ship unit (1) is moved to the foundation pile (6), the semicircular plate is opened, two sunken ships (2) are driven to be close to each other, the foundation pile (6) is sleeved in the semicircular grooves of the two sunken ships (2), the sunken ship units (1) on the two sunken ships (2) are close to each other, and the rest parts of the butt joint positions of the sunken ship units (1) on the two sunken ships (2) are firmly connected with each other.
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| CN202310319098.6A CN116377953B (en) | 2023-03-28 | 2023-03-28 | Offshore wind power pile surrounding concrete slab hinge sinking bar and construction method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594292A (en) * | 2014-12-23 | 2015-05-06 | 重庆交通大学 | Anti-tear soil engineering soft mattress structure |
| CN115627805A (en) * | 2022-10-12 | 2023-01-20 | 京泰新能(青岛)海洋科技有限公司 | Scouring protection construction method for foundation of offshore wind power pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2354535B1 (en) * | 2009-12-29 | 2012-07-25 | Kyowa Co., Ltd. | Method for constructing a foundation for a wind power generation system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594292A (en) * | 2014-12-23 | 2015-05-06 | 重庆交通大学 | Anti-tear soil engineering soft mattress structure |
| CN115627805A (en) * | 2022-10-12 | 2023-01-20 | 京泰新能(青岛)海洋科技有限公司 | Scouring protection construction method for foundation of offshore wind power pile |
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