CN106948360A - The assembled wing plate sleeve and construction method of offshore wind turbine large diameter steel pipe pile foundation - Google Patents
The assembled wing plate sleeve and construction method of offshore wind turbine large diameter steel pipe pile foundation Download PDFInfo
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- CN106948360A CN106948360A CN201710320181.XA CN201710320181A CN106948360A CN 106948360 A CN106948360 A CN 106948360A CN 201710320181 A CN201710320181 A CN 201710320181A CN 106948360 A CN106948360 A CN 106948360A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 167
- 239000010959 steel Substances 0.000 title claims abstract description 167
- 238000010276 construction Methods 0.000 title claims abstract description 64
- 239000002689 soil Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 125000003003 spiro group Chemical group 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000004513 sizing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 229910000679 solder Inorganic materials 0.000 abstract 2
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation, including：Steel case concrete flange plate, steel bushing and the construction top board at the top of sleeve；Location-plate is interior on the outside of described steel case concrete flange plate insertion steel bushing and is positioned and is anchored by biserial bolt；Location-plate, which is fixed on the outside of pile body by solder design mode and tension is welded on the outside of location-plate, on the outside of described steel bushing splits floor of putting more energy into；Described construction top board is fixed at the top of assembled wing plate sleeve by solder design mode.The present invention is applied to offshore wind power foundation industry, effect highly significant for improving offshore wind farm large diameter steel pipe pile foundation shallow soil body horizontal resist forces, and device feature is attached by in-situ precast, erection method, assembled wing plate sleeve is pressed to by designated depth using static pressure or hammer mode finally by construction casing, has the advantages that effect is notable, technique is simple, using convenient, economical and practical.
Description
Technical field
The present invention relates to a kind of assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation and construction method, belong to
Offshore wind power foundation technical field.
Background technology
As economical growth and environmental pollution increasingly sharpen, the whole world is continuously increased to the demand of clean energy resource.It is marine
Wind energy has wind speed height, wind-force lasting stability, wind shear small, and no visual, noise pollution and the advantages of be not take up land, into
For the emphasis of countries in the world energy development.As China's offshore wind farm industry is greatly developed, super-large diameter single-pile foundation is due to it
Bearing capacity is big, degree of safety is high, good economy performance, convenient construction the advantages of, it has also become the most frequently used foundation pattern of offshore wind turbine.
At present, super-large diameter steel pipe single-pile foundation stake footpath is up to 5.0-6.5m.Offshore wind farm single-pile foundation be primarily subjected to wind,
The horizontal loads such as wave, stream, need emphasis to consider its horizontal bearing performance in the design.However, with the increase in stake footpath, phase
The calculating scoured pit's depth and radius answered are neglected completely also in increase, during design from the relatively angle of safety washes away scope
The horizontal resist forces effect of interior earthing；Importantly, in order to prevent from washing away in Practical Project, it is general to be covered in using protection against erosion pad
Mud face top layer so that super-large diameter wind-powered electricity generation pile foundation, which is not present, washes away situation, in other words, true mud face to true horizon bearing capacity meter
It is intact presence to count the soil body in beginning position range, and traditional design and construction method ignore the horizontal resist forces of the soft soil
Effect make it that construction costs cost is higher, causes unnecessary waste.
The content of the invention
Purpose：It is, for reasons such as upper strata soft soil low intensity, anti-Its ultimate bearing capacity differences, to propose a kind of for carrying
The assembled wing plate sleeve and its construction method of high offshore wind turbine large diameter steel pipe pile foundation level bearing capacity, pass through the assembled wing
The problem of sleeve-board cylinder increase pile body earth resistance lifting surface area is to solve soft soil water resistant flat low bearing capacity, while can also lay in
Higher safety affluence degree to tackle the problems such as offshore wind farm single-pile foundation that force majeure factor (such as typhoon) is caused is tilted,
Have the advantages that effect is notable, technique is simple, using convenient, economical and practical.
Technical scheme：In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation, including：Steel bushing, steel case-concrete
Wing plate, wing plate injection boots, construction top board, location-plate, the polylith steel case-concrete flange plate is respectively embedded into uniform on the outside of steel bushing
In the location-plate groove of distribution, steel case-concrete flange plate is anchored with location-plate by two row bolts；Steel case-the coagulation
Native wing plate bottom is provided with the wing plate injection boots of isosceles triangular structure；The construction of circular ring structure is provided with the top of the steel bushing
Top board.
Preferably, the quantity of the steel case-concrete flange plate is set to two pieces or four pieces.
Preferably, described steel bushing 2~3cm of wall thickness, it is consistent that steel bushing height calculates depth with scour hole.
Preferably, the steel case-concrete flange plate by steel case with inside filling coagulation local soil type into；The steel case
Formed by 1~2cm of wall thickness steel plate splicing；The concrete is set to the crushed stone concrete of C30 and its above intensity.
Preferably, two row spiro keyhole positions, the 1st row spiral shell are reserved in the nearly steel bushing side of steel case-concrete flange plate
Keyhole position is away from steel case-concrete flange plate outer ledge 25cm, and the 1st arranges at the top of the 1st spiro keyhole position distance steel case-concrete flange plate
Edge is 10cm, and the 2nd row spiro keyhole position and the 1st row spiro keyhole position level interval are 15cm, and the 2nd arranges the 1st spiro keyhole position distance
It is 25cm that steel case-concrete, which is combined wing plate top edge,；It is 30cm per the spacing between a line spiro keyhole position；Spiro keyhole position diameter
No more than diameter of bolt 2mm；The diameter of bolt is 24mm.
Preferably, the steel case overall appearance dimensional thickness is 30~40cm, highly highly consistent with steel bushing.
Preferably, the wing plate injection boots are 1cm, angle by two panels thickness and constitute and weld in 60 ° of steel plate
Steel case-concrete flange plate bottom is connected to, wedge angle is down.
Preferably, the location-plate length and steel bushing are highly consistent, and width is 21.8cm, and thickness is 3cm；Often
To the big 4~8mm of gap ratio steel case thickness of location-plate；Location-plate is fixed on the outside of steel bushing by welding manner；Location-plate is pre-
Two row spiro keyhole positions are first opened up, wherein that 1 row spiro keyhole position Distance positioning plate outer ledge away from steel bushing is apart from 10cm, its
Remaining spiro keyhole position relative spacing is consistent with the spiro keyhole position position on steel case-concrete flange plate.
Preferably, a pair of tensions of welding split floor of putting more energy on the outside of each pair location-plate；The ribbed stiffener thickness of slab
Spend for 1~2cm, width is 40cm, and length is consistent with location-plate length, while be welded on location-plate and with the 1st row bolt away from
From for 7cm, another side is welded on steel bushing lateral wall.
Preferably, the construction top board internal diameter is consistent with steel bushing internal diameter, and length is 50cm, passes through welding manner
It is fixed at the top of steel bushing, 20 pieces of anti-unstabilitys of welding are put more energy into floor below construction top board；The anti-unstability of described every piece is put more energy into floor
Thickness is 1~2cm, and rectangular triangular structure, two right-angle side sizes are 20cm × (20~50) cm, the weldering of right angle short side dimension
Steel bushing lateral wall is connected on, the long side in right angle is welded on the downside of construction top board；Each a quarter steel bushing arc-shaped edges are according to isogonism
Degree is evenly arranged 5 pieces of anti-unstabilitys and put more energy into floor.
Preferably, the intensity of steel is Q345 in the assembled wing plate sleeve.
A kind of assembled wing plate sleeve construction method of offshore wind turbine large diameter steel pipe pile foundation, it is characterised in that：Including
Following steps：
Step one：The width of pre-manufactured steel case is taken as 0.5~1 times of steel-pipe pile diameter；By land prefabricated building site in advance according to
Size is made in 4 steel casees and internal addition concrete formation steel case-concrete flange plate, manufacturing process and reserves two row bolts hole
Position；Requirement is dimensioned and makes wing plate injection boots, and is welded on steel case-concrete flange plate bottom；
Step 2：Clearance distance between the internal diameter and steel-pipe pile external diameter of prefabricated steel bushing controls stake is long under mud face 1/
In the range of 2000~1/1000, and in steel bushing four in 90 ° of side opposite the angle positioning of the welding with two row spiro keyhole positions in pairs
Plate, after the completion of weld tension on request on the outside of each pair location-plate and split floor of putting more energy into；
Step 3：Prefabricated annular construction top board, anti-unstability reinforcement floor and construction sleeve are required according to size, and with it is upper
State the finished product that two steps complete and load transport onto ship together to pile driving barge；Carry out steel case-concrete flange plate and steel on pile driving barge
The bolt consolidation service of sleeve, then welding procedure top board and sets anti-unstability to put more energy into floor at the top of steel bushing；
Step 4：By the assembled wing plate sleeve completed lifting is through steel-pipe pile and transfers naturally under can not continue
Untill heavy；Assembled wing plate sleeve will remain one pair of which steel case-concrete flange plate and horizontal force in sinking watching
Load direction is vertical, and another pair is then parallel with horizontal loads direction；
Step 5：Construction sleeve lifting is transferred naturally through steel-pipe pile and contacted with construction top board surface, is then used
Static pressure or hammer mode, by construction sleeve by assembled wing plate sleeve press to construction top board flushed with mud face untill；Apply
Construction sleeve is extracted out from steel-pipe pile after the completion of work and recycled.
Preferably, construction sleeve wall thickness is consistent with steel bushing, and internal diameter is between the construction inside and outside diameter range of top board
Interior, length is taken as mud face to the vertical height between pile driving barge construction platform.
Beneficial effect：The assembled wing plate sleeve for the offshore wind turbine large diameter steel pipe pile foundation that the present invention is provided, its advantage
It is as follows：Wing plate width is big, can greatly increase the horizontal resist forces effect effective width of top layer soft soil, and effective width is reachable
2-3 times of steel-pipe pile diameter, effect highly significant；Use can not only be greatly reduced by being combined wing plate mode by steel case-concrete
Steel amount, can more effectively improve section resistance moment, improve the degree of safety of structural system；By way of assembling so that assembling
The critical component of formula wing plate sleeve can shift to an earlier date individually prefabricated and on-site consolidation, so that the making for significantly reducing device is difficult
Degree, transport difficulty and cost；Carry out pushing construction, and construction casing recoverable by construction casing, construction is simple,
Practical, workload greatly reduces, and economy is strong.
Brief description of the drawings
Fig. 1 is assembled wing plate sleeve-steel-pipe pile-construction sleeve overall schematic of the present invention.
Fig. 2 is assembled wing plate sleeve three-dimensional side view of the present invention.
Fig. 3 is assembled wing plate sleeve perspective bottom view of the present invention.
Fig. 4 is assembled wing plate sleeve perspective view of the present invention.
Fig. 5 is assembled wing plate sleeve top view of the present invention.
Fig. 6 is assembled wing plate sleeve front view of the present invention.
Fig. 7 is steel box structure scale diagrams in assembled wing plate sleeve of the present invention.
Fig. 8 is assembled wing plate sleeve connection position of the present invention partial enlarged drawing.
Fig. 9 is steel case-concrete flange plate spiro keyhole position schematic diagram in assembled wing plate sleeve of the present invention.
Figure 10 is location-plate spiro keyhole position schematic diagram in assembled wing plate sleeve of the present invention.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in figure 1, the present embodiment includes super-large diameter steel-pipe pile 1, assembled wing plate sleeve 2 and construction casing 3.It is described
It is consistent that the total height of assembled wing plate sleeve 2 calculates depth with scour hole.
As shown in Figure 2, Figure 3 and Figure 4, assembled wing plate sleeve 2 is main by steel bushing 2-1 and steel case-concrete flange plate 2-2
Assembled connection is carried out by location-plate 2-4 and bolt 2-5；Each pair location-plate 2-4 both sides are respectively welded tension and split the floor 2- that puts more energy into
6；To reduce the penetration resistance of assembled wing plate sleeve 2, in steel case-concrete flange plate 2-2 bottoms staking wing plate injection boots 2-3.
Finally welding procedure top board 2-7 and anti-unstability are put more energy into floor 2-8 at the top of steel bushing 2-1.
As shown in Fig. 2-Fig. 6, clearance distance is long for stake under mud face between steel bushing 2-1 internal diameter and the external diameter of steel-pipe pile 1
Lb1/2000~1/1000, this is due to that design requirement pile body is deformed into L in Ni Mianchub/ 500, device of the invention be in order to
Improve the standard bearing capacity, reduction deformation, then setting stake pile body deformation reaches 0.5 times of permissible value (Lb/ 500) when must start
Play a role；Needed simultaneously in view of each structure manufacture trueness error and construction space, set minimum clearance as 0.25 times of stake
Body deformation permissible deformation value (Lb/500).Steel bushing 2-1 is Q345 steel, and wall thickness is 2~3cm, excessively thin should not to avoid flexing
Deformation, it is also unsuitable blocked up in order to avoid unnecessary waste of material.
As shown in fig. 7, steel case 2-2-1 height lhIt is consistent with the total height of assembled wing plate sleeve 2；Steel case 2-2-1's
Overall width lwIt is taken as the diameter of 0.5~1 times of steel-pipe pile 1；Steel case 2-2-1 overall appearance dimensional thickness ltFor 30~40cm, root
It is determined according to following formula：
In formula：ltFor steel case 2-2-1 overall appearance dimensional thickness；suFor weak soil soil body shear stress, from relatively
The angle of safety is taken as 12kPa~24kPa；lwFor steel case 2-2-1 width；σDrawRepresent Q345 steel tensile strength standard values.
When finding that the diameter of steel-pipe pile 1 is in the range of 5-7m by calculating, general ltFor 30~40cm.
Every piece of steel plate thickness t is taken as 1~2cm in steel case 2-2-1, while needing to meet following formula shearing resistance requirement：
In formula：T is the thickness of every block of plate in steel case 2-2-1, as shown in Figure 8；σCutRepresent Q235 steel shearing strength standards
Value.
As shown in figure 8, concrete 2-2-2 in steel case-concrete flange plate 2-2 is using the mixed of C30 and above strength criterion
Solidifying soil pours shaping, and can carry out assembly after at least 28 days and use.
As shown in figure 9, steel case-concrete flange plate 2-2 reserves 2 row spiro keyhole positions in manufacturing process.1st row hole position is away from steel
Case-concrete is combined wing plate 2-2 outer ledges 25cm, and the 1st, which arranges the 1st hole position distance steel case-concrete, is combined at the top of wing plate 2-2
Edge is 10cm, and the 2nd row hole position and the 1st row hole position level interval are 15cm, and the 2nd to arrange the 1st hole position distance steel case-concrete multiple
It is 25cm to close wing plate 2-2 top edges；To each other away from for 30cm between the bolt of each row.Spiro keyhole position diameter is than bolt 2-5
Diameter is bigger, but must not exceed 2mm；A diameter of 24mm of the bolt 2-5 or so.
Two row spiro keyhole positions in the same horizontal line, using interlaced arrangement, not may be such that the member stress of junction more
Rationally, overall shear failure will not be produced.Spiro keyhole position distance is limited, primarily to fixed and positioned facility；It is same
Although row pitch of bolts is set to 30cm, but on the whole from the point of view of two row bolts, pitch of bolts only has 15cm in fact, from economy angle
Degree is relatively reasonable, and otherwise material cost, construction cost can increase.
Totally 8 pieces of location-plate 2-4 as shown in Fig. 2~Fig. 6, every piece of location-plate 2-4 are made using Q345 steel, length and steel
Sleeve 2-1 total heights are consistent, and width is about 21.8cm, and thickness is 3cm；Location-plate 2-4 is fixed in pairs in advance by welding manner
On the outside of steel bushing 2-1, adjacent two pairs of location-plates 2-4 angles are 90 °；Clear distance is more multiple than steel case-concrete between each pair location-plate 2-4
Close the big 4~8mm of wing plate 2-2 thickness.
Location-plate 2-4 as shown in Figure 10 opens two row spiro keyhole positions in advance, wherein that 1 row bolt hole away from steel bushing 2-1
Position Distance positioning plate 2-4 outer ledges are combined wing plate 2-2 perforates apart from 10cm, remaining perforate relative spacing with steel case-concrete
Completely the same.
As shown in figure 8, a pair of tensions of welding split the floor 2-6 that puts more energy on the outside of each pair location-plate 2-4；The tension splits ribbed stiffener
Plate 2-6 thickness is 1~2cm, and width is 40cm, and length is consistent with location-plate 2-4 length, while be welded on location-plate 2-4, with
1st row bolt 2-5 distances are 7cm, and another side is welded on steel bushing 2-1 lateral walls.
As shown in Fig. 3~Fig. 5, the construction top board 2-7 is in annular, and internal diameter is consistent with steel bushing 2-1 internal diameters, and width is
50cm, is fixed at the top of steel bushing 2-1 by welding manner, and 20 pieces of anti-unstabilitys of welding are put more energy into floor 2- below construction top board 2-7
8；The anti-unstability of described every piece puts more energy into floor 2-8 thickness for 1~2cm, triangular shape, two right-angle side sizes be 20cm ×
(20~50) cm, right angle short side dimension is welded on steel bushing 2-1 lateral walls, and the long side in right angle is welded on the downside of construction top board 2-7；Often
Individual a quarter steel bushing 2-1 arc-shaped edges are put more energy into floor 2-8 according to being angularly evenly arranged 5 pieces of anti-unstabilitys.
Such as Fig. 2~Fig. 4, shown in Fig. 6, the wing plate injection boots 2-3 is the steel plate that 1cm, angle are in 60 ° by two panels thickness
Constitute and be welded in steel case-concrete and be combined wing plate 2-2 bottoms, wedge angle is towards stake extreme direction.
The assembled wing plate sleeve construction method of the implementation case is comprised the following steps that：
1. 4 steel case 2-2-1 and the internal concrete 2-2-2 for pouring into prescribed strength are made according to size in advance by land
Form steel case-concrete and be combined reserved two row spiro keyhole positions in wing plate 2-2, manufacturing process；Requirement is dimensioned to make
Wing plate injection boots 2-3 is simultaneously welded on the compound wing plate 2-2 bottoms of steel case-concrete；
2. prefabricated steel bushing 2-1 is required according to size, and welded in pairs with two row spiral shells in 90 ° of side opposite the angle at its four
The location-plate 2-4 of keyhole position, after the completion of weld tension on request on the outside of each pair location-plate and split the floor 2-6 that puts more energy into；
3. require that construct top board 2-7, anti-unstability of prefabricated annular is put more energy into floor 2-8 and construction sleeve 3 according to size, and with
The finished product that above-mentioned 2 step completes loads transport onto ship to pile driving barge together.Carry out steel case-concrete on pile driving barge and be combined wing plate
2-2 and steel bushing 2-1 bolt 2-5 consolidation services, then welding procedure top board 2-7 and set anti-mistake at the top of steel bushing 2-1
The steady floor 2-8 that puts more energy into.
4. by the assembled wing plate sleeve 2 completed lift through steel-pipe pile 1 and transfer naturally to can not continue sink
Untill；Assembled wing plate sleeve 2 will remain that one pair of which steel case-concrete is combined wing plate 2-2 and water in sinking watching
Flat imposed load direction is vertical, and another pair is then parallel with horizontal loads direction.
5. construction sleeve 3 is lifted and transferred naturally through steel-pipe pile 1 and contacted with construction top board 2-7 surfaces, then used
Static pressure or hammer mode, by construction sleeve 3 by assembled wing plate sleeve 2 press to construction top board flushed with mud face untill.
Construction sleeve 3 is extracted out from steel-pipe pile 1 after the completion of construction and recycled.
Described construction sleeve 3 is made using Q345 intensity steel, and wall thickness is consistent with steel bushing 2-1, and internal diameter is between construction
In the inside and outside diameter ranges of top board 2-7, length is taken as mud face to the vertical height between pile driving barge construction platform.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (13)
1. a kind of assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation, including：Steel bushing, it is characterised in that：Also
Including：Steel case-concrete flange plate, wing plate injection boots, construction top board, location-plate, the polylith steel case-concrete flange plate difference are embedding
Enter on the outside of steel bushing in equally distributed location-plate groove, steel case-concrete flange plate carries out anchor with location-plate by two row bolts
Gu；Steel case-concrete flange plate the bottom is provided with the wing plate injection boots of isosceles triangular structure；Set at the top of the steel bushing
There is the construction top board of circular ring structure.
2. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
The quantity of the steel case-concrete flange plate is set to two pieces or four pieces.
3. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
Described steel bushing 2~3cm of wall thickness, it is consistent that steel bushing height calculates depth with scour hole.
4. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
Steel case-the concrete flange plate by steel case with inside filling coagulation local soil type into；The steel case by 1 ~ 2cm of wall thickness steel plate splicing
Form；The concrete is set to the crushed stone concrete of C30 and its above intensity.
5. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
Two row spiro keyhole positions are reserved in the nearly steel bushing side of steel case-concrete flange plate, and the 1st row spiro keyhole position is away from steel case-concrete wing
Plate outer ledge 25cm, the 1st arranges the 1st spiro keyhole position distance steel case-concrete flange plate top edge for 10cm, the 2nd row bolt
Hole position is 15cm with the 1st row spiro keyhole position level interval, and the 2nd, which arranges the 1st spiro keyhole position distance steel case-concrete, is combined wing plate top
Portion edge is 25cm；It is 30cm per the spacing between a line spiro keyhole position；Spiro keyhole position diameter is not more than diameter of bolt 2mm；Institute
The diameter of bolt is stated for 24mm.
6. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
The steel case overall appearance dimensional thickness is 30 ~ 40cm, highly highly consistent with steel bushing.
7. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
The wing plate injection boots are 1cm, angle by two panels thickness and are constituted in 60 ° of steel plate and be welded in steel case-concrete flange plate bottom
Portion, wedge angle is down.
8. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
The location-plate length and steel bushing are highly consistent, and width is 21.8cm, and thickness is 3cm；The gap ratio steel case of each pair location-plate
Big 4 ~ the 8mm of thickness；Location-plate is fixed on the outside of steel bushing by welding manner；Location-plate opens up two row spiro keyhole positions in advance, its
In that 1 row spiro keyhole position Distance positioning plate outer ledge away from steel bushing apart from 10cm, remaining spiro keyhole position relative spacing with
Spiro keyhole position position on steel case-concrete flange plate is consistent.
9. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, it is characterised in that：
A pair of tensions of welding split floor of putting more energy on the outside of each pair location-plate；The ribbed stiffener plate thickness is 1 ~ 2cm, and width is 40cm,
Length is consistent with location-plate length, while being welded on location-plate and with the 1st row bolt apart from being 7cm, another side is welded on steel
Sleeve lateral wall.
10. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, its feature exists
In：The construction top board internal diameter is consistent with steel bushing internal diameter, and length is 50cm, is fixed on by welding manner at the top of steel bushing,
20 pieces of anti-unstabilitys of welding are put more energy into floor below construction top board；The anti-unstability ribbed stiffener plate thickness of described every piece is 1 ~ 2cm, at right angles
Triangular structure, two right-angle side sizes are 20cm × (20 ~ 50) cm, and right angle short side dimension is welded on steel bushing lateral wall, directly
Angular length side is welded on the downside of construction top board；Each a quarter steel bushing arc-shaped edges are according to being angularly evenly arranged 5 pieces of anti-unstabilitys
Put more energy into floor.
11. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 1, its feature exists
In：The intensity of steel is Q345 in the assembled wing plate sleeve.
12. a kind of assembled wing plate sleeve construction method of offshore wind turbine large diameter steel pipe pile foundation, it is characterised in that：Including such as
Lower step：
Step one：The width of pre-manufactured steel case is taken as 0.5 ~ 1 times of steel-pipe pile diameter；Prefabricated building site is in advance according to size system by land
Perform in 4 steel casees and internal addition concrete formation steel case-concrete flange plate, manufacturing process and reserve two row spiro keyhole positions；Press
Wing plate injection boots are made according to Sizing requirements, and are welded on steel case-concrete flange plate bottom；
Step 2：Clearance distance between the internal diameter and steel-pipe pile external diameter of prefabricated steel bushing controls stake is long under mud face 1/2000
It is complete in the range of ~ 1/1000, and in steel bushing four in 90 ° of side opposite the angle location-plate of the welding with two row spiro keyhole positions in pairs
Tension is welded on request on the outside of each pair location-plate after splits floor of putting more energy into；
Step 3：Prefabricated annular construction top board, anti-unstability reinforcement floor and construction sleeve are required according to size, and with above-mentioned two
Walk the finished product completed and load transport onto ship together to pile driving barge；Carry out steel case-concrete flange plate and steel bushing on pile driving barge
Bolt consolidation service, then welding procedure top board and set anti-unstability to put more energy into floor at the top of steel bushing；
Step 4：The assembled wing plate sleeve completed lifting is transferred through steel-pipe pile and naturally to can not continue sinking and is
Only；Assembled wing plate sleeve will remain one pair of which steel case-concrete flange plate and horizontal force load in sinking watching
Direction is vertical, and another pair is then parallel with horizontal loads direction；
Step 5：Construction sleeve lifting is transferred naturally through steel-pipe pile and contacted with construction top board surface, then using static pressure
Or hammer mode, by construction sleeve by assembled wing plate sleeve press to construction top board flushed with mud face untill；Construct
Construction sleeve is extracted out from steel-pipe pile after and recycled.
13. the assembled wing plate sleeve of offshore wind turbine large diameter steel pipe pile foundation according to claim 12, its feature exists
In：Construction sleeve wall thickness is consistent with steel bushing, and internal diameter is in the construction inside and outside diameter range of top board, and length is taken as mud face and extremely beaten
Vertical height between stake ship construction platform.
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| CN108180021A (en) * | 2018-03-05 | 2018-06-19 | 安徽路鼎科技股份有限公司 | The anti-rotational wing plate of push-bench |
| CN108411930A (en) * | 2018-03-21 | 2018-08-17 | 山东科技大学 | A kind of novel steel tube pile foundation |
| CN110438978A (en) * | 2019-08-08 | 2019-11-12 | 长江水利委员会长江科学院 | A kind of assembled fixator for resisting large-tonnage horizontal force for Wrecking of dike |
| CN111173018A (en) * | 2020-02-17 | 2020-05-19 | 东南大学 | Embedded bearing platform foundation soil horizontal directional pre-pressing device and implementation method |
| WO2022174572A1 (en) * | 2021-02-22 | 2022-08-25 | 中国长江三峡集团有限公司 | Offshore wind power single pile-friction wing composite foundation and construction method therefor |
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Application publication date: 20170714 |