CN108842806A - A kind of construction technology of the non-embedding rock single pile of offshore wind power foundation - Google Patents
A kind of construction technology of the non-embedding rock single pile of offshore wind power foundation Download PDFInfo
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- CN108842806A CN108842806A CN201810697687.7A CN201810697687A CN108842806A CN 108842806 A CN108842806 A CN 108842806A CN 201810697687 A CN201810697687 A CN 201810697687A CN 108842806 A CN108842806 A CN 108842806A
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 239000011435 rock Substances 0.000 title claims abstract description 40
- 238000005516 engineering process Methods 0.000 title claims abstract description 34
- 238000005553 drilling Methods 0.000 claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 73
- 230000008569 process Effects 0.000 claims abstract description 65
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000010438 granite Substances 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
-
- 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
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Piles And Underground Anchors (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of construction technologies of the non-embedding rock single pile of offshore wind power foundation, including following below scheme：Steel-pipe pile production, steady stake putting up platform, pitching pile, first strike pile sinking, drilling, borehole cleaning and strike-on pile sinking.Pitching pile process includes steel-pipe pile lifting, steel-pipe pile enters Longkou, steel-pipe pile positioning is held tightly and steel-pipe pile sinks and sets step.Drilling process includes drilling machine in place, installation drilling rod, slurrying and drilling and forming hole step.Construction technology of the invention is respectively into the Longkou stage, heavy set the stage, opens the hammer last stage, normal pile sinking stage, continuous pile sinking stage, pile head elevation control stage also in the verticality of six stage control steel-pipe piles.Construction technology of the invention, can be improved construction efficiency, effectively improves the horizontal resistivity and anti-group of ability of non rock rooted pile, meets the requirement of Structural Design and construction.
Description
Technical field
The present invention relates to a kind of construction technologies of the non-embedding rock single pile of offshore wind power foundation.
Background technique
Wind power plant basic engineering field at sea, according to different earth formation and characteristic, and according to each rock-soil layer origin cause of formation
Type and engineering characteristic carry out comprehensive division, and the single-pile foundation generallyd use includes non-embedding rock single pile, embedding rock single pile and embedded type
Embedding rock single pile.The construction of pile foundation is the leading engineering of offshore wind farm project, and for separate land and the depth of water is up to 16m~19m's
Off-lying sea carries out the construction of offshore wind farm without shielding region, due to the constraint by natural conditions such as meteorology, trend, waves, and is in
Take place frequently region and Fan Equipment of tropical storm has very high requirement to the carrying on basis, withdrawal resistance, deformation, it is therefore desirable to
Pile foundation diameter is big, embedded depth is deep, so that blower foundation can bear huge blower tilting moment and bear wave, water flow lotus
Load effect, there are also be exactly construction speed duration control it is particularly critical.
Summary of the invention
A kind of non-embedding rock single pile of offshore wind power foundation is provided it is an object of the invention to overcome the deficiencies of existing technologies
Construction technology, it can be improved construction efficiency, effectively improves the horizontal resistivity and anti-group of ability of non rock rooted pile, meets engineering
The requirement of structure design and construction.
The object of the present invention is achieved like this：A kind of construction technology of the non-embedding rock single pile of offshore wind power foundation, it is involved
Single pile using 7.0~7.3m of diameter, 60~80mm of wall thickness steel-pipe pile, squeeze into cataclastic shape strong weathered granite, always bury
Depth is 39.2~45.9m, height of pile top 15m, stake bottom about -54~-63m of absolute altitude；
Construction technology of the invention includes following below scheme：Steel-pipe pile production, is bored steady stake putting up platform, pitching pile, first strike pile sinking
Hole, borehole cleaning, strike-on pile sinking；
The steel-pipe pile production process includes tube coupling blanking, tube coupling retaining wall on slope, tube coupling roll-forming, pile body top flange
Assembly, pile body splicing and corrosion-inhibiting coating coating step；The diameter of manufactured steel-pipe pile is 7.0~7.3m, wall thickness is 60~80mm；
The steady stake putting up platform process includes the following steps：
1. steady stake platform includes upper and lower platform, four auxiliary process stakes, two positioning process stakes and a set of positioning system；
Lower platform and four auxiliary process stakes first pass through steel-pipe pile relative position at the Longkou of locating platform ship and lower platform and are positioned,
The inserting piling of four auxiliary process stakes is carried out again, then by the auxiliary process pipe casing upper and lower part in auxiliary process stake and lower platform
Pass through steel plate strip firm welding；
2. locating platform ship is first removed, then two positioning process stakes of inserting piling, it then will be in positioning process stake and lower platform
Positioning process pipe casing upper and lower part passes through steel plate strip firm welding；
3. installing upper mounting plate after pitching pile process；
The pitching pile process includes steel-pipe pile lifting, steel-pipe pile enters Longkou, steel-pipe pile positioning is held tightly and steel-pipe pile sinks and sets step
Suddenly；
When progress steel-pipe pile lifting step, ship is hung using master and steel-pipe pile is lifted by crane and erected by the way of ship cooperation lifts by auxiliary hang
Stake；First by the main main lifting lug in two sides for hanging ship elder generation hanging buckle steel-pipe pile, every main lifting lug in side hangs two wirerope, then hangs the auxiliary ship that hangs
Turn over the wirerope of lifting lug；Starting again, which makes master hang ship, hangs ship synchronous hoisting with auxiliary, when steel-pipe pile leaves the deck that pile transport is refuted completely
When 0.5m, pause lifting checks the stress condition of every wirerope, continues to lift by crane after without exception；When steel-pipe pile is refuted apart from pile transport
6~7m of deck when, pile transport, which is refuted, exits construction area；Then master hangs ship and hangs ship mutual cooperation completion soldier piles with auxiliary；Complete soldier piles
Afterwards, it is auxiliary hang ship and continue to transfer suspension hook so that wirerope is not stressed, while the main ship that hangs continues to rise suspension hook, when the turn lifting lug of steel-pipe pile
When being in 2~3m of the water surface or more, the turn shackle on steel-pipe pile is extracted out by tender；
When carrying out the steel-pipe pile and entering Longkou step, ship lifting steel-pipe pile is hung by main, and slowly enter the dragon of steady stake platform
Mouthful, start slowly to transfer steel-pipe pile when the pile center position that steel-pipe pile is in Longkou；When the turn lifting lug on steel-pipe pile away from
When from steady stake platform top surface 1m, stops decentralization steel-pipe pile, then cut off lifting lug is turned over, be completed at the same time the lower platform of steady stake platform
The installation of outer Longkou beam；
When carrying out the steel-pipe pile positioning holding step, the posture of steel-pipe pile is first measured, then by being arranged on steady stake platform
Positioning system adjustment steel-pipe pile verticality, then adjust positioning system hold tightly steel-pipe pile；
When carrying out that the steel-pipe pile is heavy to set step, main to hang ship decentralization wirerope, steel-pipe pile is sunk down under the action of self-weight
Stop sinking after certain depth under mud face, after confirmation steel-pipe pile is stablized, the main ship that hangs continues to transfer wirerope, is in wirerope not
Stress and the state that do not break off relations；Sight look into 15 minutes confirmation steel-pipe piles it is unchanged after, release the wirerope at main lifting lug；
When carrying out the first strike pile sinking process, hydraulic hammer and fuller are lifted by crane by the main ship that hangs, when stake top tooling flange and liquid
After hammer contact, suspension hook is gradually transferred, piling weight is stepped up, the posture for observing 15 minutes confirmation steel-pipe piles is unchanged
Afterwards, hydraulic hammer is started, hydraulic hammer first sinks steel-pipe pile with small energy crawl, when steel-pipe pile buries 30m, is changed to continuously sink steel
The hit energy of tubular pole, hydraulic hammer is ascending；
The drilling process includes drilling machine in place, installation drilling rod, slurrying and drilling and forming hole step；
When carrying out drilling machine step in place, hydraulic hammer is first hung, the upper mounting plate of steady stake platform is then installed, then sets up drilling machine,
Using the gas lift reverse circulation hydraulic power drilling machine for being configured with drag bit and roller cutter bit, by pile gripper by drilling machine and steel-pipe pile
Locking；
When carrying out installation drilling rod step, drill bit, drilling rod are installed to drilling machine after assembly well on the main deck for hanging ship again
On；
Carry out slurrying step when, slurry coat method using do not disperse, low solid phase, highly viscous PHP high performance slurry, first
Bentonite slurry is stirred using slurry mixer in mud pit, is then pumped in steel-pipe pile using slush pump, works as steel-pipe pile
Aperture is crept into after interior mud property index meets construction requirement；The mud of reacting cycle discharge, after being purified using mud separator
It is recycled；
It include following process when progress drilling and forming hole step：
1. first being crept into using drag bit clear water, welding-on array wirerope brush, wirerope brush on the outer diameter guard ring of drill bit
Outer diameter be greater than 5~10cm of steel-pipe pile internal diameter, with guarantee in drilling process by steel-pipe pile inner wall stratum attachment scrub
Completely；
2. after drill bit drills out steel-pipe pile, atm number, medium bit pressure, slow-speed drilling and forming hole, bore diameter is than in steel-pipe pile
The small 200mm of diameter, in drilling process every piece drilling rod of drilling will cleaning bottom of hole, to guarantee that bore diameter and verticality are all satisfied requirement；
3. creep into basement rock, brill replacement roller cutter bit is mentioned, using atm number, medium bit pressure, slow-speed of revolution drilling and forming hole；?
In boring procedure, preliminary surveying hole depth is carried out using run of steel；
4. protruding into progress precise measurement hole depth in hole using professional measuring staff behind whole hole；
When carrying out borehole cleaning process, by drilling tool lifting extremely from 30~50cm of bottom hole, slow rotary tools, and high-quality mud is supplemented
Slurry carries out reacting cycle borehole cleaning, while head in retaining hole, prevents collapse hole；
When carrying out strike-on pile sinking process, drilling machine is removed, master hangs ship and repositions, and hydraulic hammer is seated to the top of steel-pipe pile
Portion strikes to designed elevation steel-pipe pile by hydraulic hammer.
The construction technology of the non-embedding rock single pile of above-mentioned offshore wind power foundation, wherein risen in the steel-pipe pile of the pitching pile process
When hanging step, first carry out it is auxiliary hang secure operation, another mistake water (flow) direction carry out it is main hangs secure, the main lifting direction for hanging ship is opposite
The Longkou of steady stake platform, then berthing is refuted in pile transport, the main crane for hanging ship is rotated to the main lifting lug of steel-pipe pile, while the auxiliary ship that hangs
Crane is rotated to the turn lifting lug of steel-pipe pile.
The construction technology of the non-embedding rock single pile of above-mentioned offshore wind power foundation, wherein in the drilling for carrying out the drilling process
When pore formation step, to prevent collapse hole, drill 4~5m, stops drilling, change hydraulic hammer carry out pile sinking operation, so circulation until
Steel-pipe pile extremely design bottom absolute altitude.
The construction technology of the non-embedding rock single pile of above-mentioned offshore wind power foundation, wherein the construction technology is also entering Longkou rank
Section heavy set the stage, opens hammer last stage, normal pile sinking stage, continuous pile sinking stage and pile head elevation control stage and take measures to control
The verticality of steel-pipe pile processed；
Entering the Longkou stage, using the positioning system top in place after, lean against steel-pipe pile using 120 laser digital display horizontal rules
Wall surface on, adjust the verticality of steel-pipe pile, verticality starts lower stake after meeting the requirements, until positioning system when steel-pipe pile enters mud 1m
Fixing belt is tight；
Set the stage heavy, after steel-pipe pile enters mud, steady stake platform edge and on the extended line on steel-pipe pile side with mutual
Vertical mode sets up two total stations, keeps the observation sight of two total stations orthogonal and tangent with steel-pipe pile side, passes through two
Two height differences are the floor projection difference and height difference of 20m or more height on platform total station observation steel-pipe pile side, calculate the steel of the direction
The gradient of tubular pole, it is primary in steel-pipe pile every sinking 1m observation, more than requiring to adjust steel-pipe pile by the main ship that hangs in time；
The hammer last stage is being opened, hydraulic hammer needs all-the-way tracking to observe, stops fuller immediately simultaneously when noting abnormalities in the fuller stage
Adjust the verticality of steel-pipe pile；
In the normal pile sinking stage, in the case where guaranteeing steel pipe pile verticality, hydraulic hammer is started, it is first heavy with the hammering of small energy
Stake, crawl 2~3 are hammered into shape, and a period of time is suspended, and are continued crawl 2~3 after without exception and are hammered into shape, are again paused for for a period of time, such 3~4
It is secondary, and observation steel-pipe pile data are measured, adjust steel-pipe pile posture；15 minutes are observed after adjustment, continues pile sinking after unchanged, every
1~2m is observed, adjustment is primary, when steel-pipe pile continues to bury 10m, is changed to observe every 3~4m, be adjusted once, work as steel-pipe pile
Continue to bury 10m when, be changed to normal hammer piling；
At the continuous pile sinking stage, only observed when cutting off main lifting lug primary；
In the pile head elevation control stage, go out the cross at steel-pipe pile center using GPS setting-out on the lower platform of steady stake platform
Axis is simultaneously marked, and makes the cross axis markers on cross axis markers and steady stake platform with steel-pipe pile by positioning system
It is overlapped, surveys the elevation of top surface and label of steady stake platform；Mobile absolute altitude instruction device is installed on steady stake platform before piling,
The absolute altitude instruction device has regulating height and horizontal functional with horizontal pointer or dress laser alignment device；Absolute altitude is referred to
The horizontal pointer of showing device is directed toward the scale side finished with steel-pipe pile, according to the top mark of the steady stake platform of setting height and steel-pipe pile
Top mark it is high, adjust horizontal pointer to suitable absolute altitude, when hydraulic hammer sinks steel-pipe pile, pass through the scale and water with steel-pipe pile
The relativeness of flat pointer carries out record of sunk plies and pile head elevation control, and carries out with steel-pipe pile and stop hammering mark line into shape, wait stop
Hammer reading stops hammering into shape when consistent with platform height.
The construction technology of the non-embedding rock single pile of above-mentioned offshore wind power foundation, wherein the stake top tooling flange is L tee section
Structure is fitted closely with stake top flange by attachment bolt and is connect.
The construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention hangs ship using master and the auxiliary ship that hangs is combined steel pipe
Stake lifting and inserting, and steady stake platform auxiliary positioning is used, piling construction can be efficiently completed, adaptable hammering equipment is also equipped with
And drilling device, the posture of monitored over time and adjustment steel-pipe pile, to guarantee that single pile smoothly and is vertically driven into marine rock layer
In, while specific aim measure is taken, keep hole wall to stablize, the appearance of the unusual conditions such as pre- preventing sticking, burying not only ensure that non-
The bearing capacity of embedding rock single pile and the stability of pile body, also effectively increase construction efficiency, and effectively improve non rock rooted pile
Horizontal resistivity and anti-group of ability, meet the requirement of Structural Design and construction.
Detailed description of the invention
Fig. 1 is the flow chart of the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention；
Fig. 2 a is the main view for the steady stake platform that the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention uses；
Fig. 2 b is the floor map of the upper platform in the lower platform of steady stake platform of the invention；
Fig. 2 c is the floor map of lower layer's platform in the lower platform of steady stake platform of the invention；
State diagram when Fig. 3 is the construction technology progress pitching pile process of the non-embedding rock single pile of offshore wind power foundation of the invention；
Fig. 4 a is bowing for the stake top tooling flange that the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention uses
View；
Fig. 4 b is the A-A direction view in Fig. 4 a；
Fig. 5 is that putting down for pile body inclining degree control is carried out in the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention
Face schematic diagram；
Fig. 6 is the plane signal that plane control is carried out in the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention
Figure；
Fig. 7 is the schematic diagram that absolute altitude control is carried out in the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 to Fig. 7 is please referred to, single pile involved in the construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention is adopted
With the steel-pipe pile of 7.0~7.3m of diameter, 60~80mm of wall thickness, squeeze into cataclastic shape strong weathered granite, total embedded depth is
39.2~45.9m, height of pile top 15m, stake bottom about -54~-63m of absolute altitude.
The construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention includes following below scheme：Steel-pipe pile production, steady stake
Putting up platform, pitching pile, first strike pile sinking, drilling, borehole cleaning, strike-on pile sinking.
Steel-pipe pile production process includes tube coupling blanking, tube coupling retaining wall on slope, tube coupling roll-forming, pile body top flange dress
Match, pile body splices and corrosion-inhibiting coating coating step.
Steady stake platform 10 includes upper mounting plate 12, the auxiliary process stake 13, two of lower platform 11, four positioning process stake 14, outer
Longkou beam 15 and a set of positioning system being made of 12 100T jack 20；Lower platform 11 is by upper platform 111 and lower layer
Platform 112 is constituted, and arranges seven jack 20 around Longkou on upper platform 111, lower layer's platform 112 is around Longkou and and upper layer
Seven jack 20 on platform 111 arrange five jack 20 with being staggered；Outer Longkou beam 15 is pacified after steel-pipe pile 100 enters Longkou
Mounted in the Longkou of upper platform 111 (see Fig. 2 a to Fig. 2 c).
Steady stake putting up platform process includes the following steps：
1. lower platform 11 and four auxiliary process stakes 13 first pass through steel-pipe pile at the Longkou of locating platform ship and lower platform 11
Relative position is positioned, then carries out the inserting piling of four auxiliary process stakes 13, then will be in auxiliary process stake 13 and lower platform 11
Auxiliary process pipe casing upper and lower part pass through steel plate strip firm welding；
2. locating platform ship is first removed, then two positioning process stakes 14 of inserting piling, then by positioning process stake 14 and lower platform
On positioning process pipe casing upper and lower part pass through steel plate strip firm welding；
3. installing upper mounting plate 12 after pitching pile process.
Pitching pile process includes steel-pipe pile lifting, steel-pipe pile enters Longkou, steel-pipe pile positioning is held tightly and steel-pipe pile sinks and sets step；
When progress steel-pipe pile lifting step, ship is hung using master and steel-pipe pile is lifted by crane and erected by the way of ship cooperation lifts by auxiliary hang
Stake；First carry out it is auxiliary hang secure operation, another mistake water (flow) direction carry out it is main hangs secure, the main lifting direction for hanging ship is flat against steady stake
The Longkou of platform, then berthing is refuted in pile transport, and the main crane for hanging ship is rotated to the main lifting lug of steel-pipe pile, while the auxiliary crane rotation for hanging ship
It goes at the turn lifting lug of steel-pipe pile；First by the main main lifting lug in two sides for hanging ship elder generation hanging buckle steel-pipe pile, every main lifting lug in side hangs two
Wirerope, and be φ 16mm × 100m cable wind rope in the top of the main lifting lug in every side, the auxiliary ship that hangs then is hung into turn lifting lug
Wirerope；Starting again, which makes master hang ship, hangs ship synchronous hoisting with auxiliary, when steel-pipe pile leaves the deck 0.5m that pile transport is refuted completely, temporarily
Stop lifting by crane, checks the stress condition of every wirerope, continue to lift by crane after without exception；When steel-pipe pile apart from the deck that pile transport is refuted 6~
When 7m, pile transport, which is refuted, exits construction area；Then master hangs ship and hangs ship mutual cooperation completion soldier piles with auxiliary；It is auxiliary to hang ship after completing soldier piles
Continuing decentralization suspension hook makes wirerope not stress, while the main ship that hangs continues to rise suspension hook, when the turn lifting lug of steel-pipe pile is in the water surface
When above 2~3m, the turn shackle on steel-pipe pile is extracted out by tender；
It carries out when steel-pipe pile enters Longkou step (see Fig. 3), steel-pipe pile 100 is lifted by crane by the main ship 200 that hangs, and slowly enter steady stake
The Longkou of platform 10 starts slowly to transfer steel-pipe pile when the pile center position that steel-pipe pile 100 is in Longkou；When on steel-pipe pile
Turn lifting lug apart from steady 10 top surface 1m of stake platform when, stop decentralization steel-pipe pile, then by turn over lifting lug cut off, be completed at the same time steady stake
The installation of the outer Longkou beam 15 of the lower platform 11 of platform；
When carrying out steel-pipe pile positioning holding step, the posture of steel-pipe pile is first measured, then pass through the positioning system on steady stake platform
Then the verticality of system adjustment steel-pipe pile adjusts positioning system and holds steel-pipe pile tightly；
When carrying out that steel-pipe pile is heavy to set step, main to hang ship decentralization wirerope, steel-pipe pile sinks down into mud face under the action of self-weight
Stop sinking after lower certain depth, after confirmation steel-pipe pile is stablized, the main ship that hangs continues to transfer wirerope, is in wirerope and does not stress
And the state that do not break off relations；Sight look into 15 minutes confirmation steel-pipe piles it is unchanged after, release the wirerope at main lifting lug.
When carrying out first strike pile sinking process, hydraulic hammer and fuller are lifted by crane by the main ship that hangs, must assure that during fuller hydraulic
The central axes of hammer and steel-pipe pile match, and are damaged for protection stake top flange 101 when beating, pacify on stake top flange 101
Stake top tooling flange 102 is filled, stake top tooling flange 102 is L tee section structure, close by attachment bolt and stake top flange 101
It is fitted and connected (see Fig. 4 a and Fig. 4 b)；After stake top tooling flange and hydraulic hammer contact, gradually transfer suspension hook, make piling weight by
Step increases, observe 15 minutes confirmation steel-pipe piles posture it is unchanged after, start hydraulic hammer, hydraulic hammer is first sunk with small energy crawl
Steel-pipe pile is changed to continuously sink steel-pipe pile, the hit energy of hydraulic hammer is ascending when steel-pipe pile buries 30m.
Drilling process includes drilling machine in place, installation drilling rod, slurrying and drilling and forming hole step；
When carrying out drilling machine step in place, hydraulic hammer is first hung, the upper mounting plate of steady stake platform is then installed, then sets up drilling machine,
Using the gas lift reverse circulation hydraulic power drilling machine for being configured with drag bit and roller cutter bit, by pile gripper by drilling machine and steel-pipe pile
Locking, and guarantee drilling machine bit central and steel-pipe pile center on same plumb line, deviation is not greater than 10cm；
When carrying out installation drilling rod step, drill bit is made of heavy balancer and stem；Drill bit, drilling rod hang ship in master
Deck on it is assembled good after be installed on drilling machine again, in drilling process, the second section drilling rod and subsequent drilling rod directly hang ship in master
Platform on install；
Carry out slurrying step when, slurry coat method using do not disperse, low solid phase, highly viscous PHP high performance slurry, first
Bentonite slurry is stirred using slurry mixer in mud pit, is then pumped in steel-pipe pile using slush pump, works as steel-pipe pile
Aperture is crept into after interior mud property index meets construction requirement；The mud of reacting cycle discharge, after being purified using mud separator
It is recycled；
It include following process when progress drilling and forming hole step：
1. first being crept into using drag bit clear water, welding-on array wirerope brush, wirerope brush on the outer diameter guard ring of drill bit
Outer diameter be greater than 5~10cm of steel-pipe pile internal diameter, with guarantee in drilling process by steel-pipe pile inner wall stratum attachment scrub
Completely；
2. after drill bit drills out steel-pipe pile, atm number, medium bit pressure, slow-speed drilling and forming hole, bore diameter is than in steel-pipe pile
The small 200mm of diameter, in drilling process every piece drilling rod of drilling will cleaning bottom of hole, to guarantee that bore diameter and verticality are all satisfied requirement；
3. creep into basement rock, brill replacement roller cutter bit is mentioned, using atm number, medium bit pressure, slow-speed of revolution drilling and forming hole；?
In boring procedure, preliminary surveying hole depth is carried out using run of steel；
4. protruding into progress precise measurement hole depth in hole using professional measuring staff behind whole hole.
To prevent collapse hole, drill 4~5m, stops drilling, changes hydraulic hammer and carries out pile sinking operation, so circulation is until steel pipe
Stake extremely design bottom absolute altitude.
When carrying out borehole cleaning process, by drilling tool lifting extremely from 30~50cm of bottom hole, slow rotary tools, and high-quality mud is supplemented
Slurry carries out reacting cycle borehole cleaning, while head in retaining hole, prevents collapse hole；
When carrying out strike-on pile sinking process, steel-pipe pile internal drilling and borehole cleaning to designed elevation, and after the completion of whole hole is checked and accepted and
When shut down and remove drilling rod, remove drilling machine, it is main to hang ship and reposition, and hydraulic hammer is seated to the top of steel-pipe pile, by hydraulic
Hammer strikes to designed elevation steel-pipe pile.
Construction technology of the invention also takes measures to control the verticality of steel-pipe pile six stages, is respectively into Longkou rank
Section heavy set the stage, opens the hammer last stage, normal pile sinking stage, continuous pile sinking stage, pile head elevation control stage；
Entering the Longkou stage, using positioning system by steel pipe stake top in place after, lean against steel using 120 laser digital display horizontal rules
In the outside wall surface of tubular pole, the verticality of steel-pipe pile is adjusted, verticality starts lower stake after meeting the requirements, until steel-pipe pile is determined when entering mud 1m
Position system fixing belt is tight；
Set the stage heavy, after steel-pipe pile enters mud, steady stake platform 10 edge and on the extended line on steel-pipe pile side with phase
Mutually vertical mode sets up two total stations, the outside wall surface phase for keeping the observation sight of two total stations orthogonal and with steel-pipe pile
It cuts, which is erected on bracket, and bracket is fixed on the lower platform of steady stake platform 10, top level when fixed
Ruler is levelling；It is the floor projection difference and height difference of 20m or more height, meter by two height differences on two total station observation steel-pipe pile sides
The gradient (see Fig. 5) for calculating the steel-pipe pile of the direction, it is primary in steel-pipe pile every sinking 1m observation, more than requiring to hang by master in time
Ship adjustment；
The hammer last stage is being opened, the hydraulic hammer fuller stage needs all-the-way tracking to observe, stops fuller when noting abnormalities immediately and adjust
The verticality of whole steel-pipe pile；
In the normal pile sinking stage, in the case where guaranteeing steel pipe pile verticality, hydraulic hammer is started, first with small energy hydraulic hammer
Stake is sunk, crawl 2~3 is hammered into shape, and a period of time is suspended, and is continued crawl 2~3 after without exception and is hammered into shape, is again paused for for a period of time, such 3
~4 times, and observation steel-pipe pile data are measured, adjust steel-pipe pile posture；15 minutes are observed after completing pile body adjustment, it is unchanged subsequent
Continuous pile sinking, it is primary every 1~2m observation, adjustment, when steel-pipe pile continues to bury 10m, it is changed to every 3~4m observation, adjustment one
Secondary, when steel-pipe pile continues to bury 10m, steel-pipe pile embedded depth about 30m, regulating measures can not play corrective action at this time,
It is changed to normal hammer piling；
At the continuous pile sinking stage, only observed when cutting off main lifting lug primary；
In the pile head elevation control stage, go out 100 center of steel-pipe pile using GPS setting-out on the lower platform of steady stake platform 10
Cross axis is simultaneously marked, and makes the cross on cross axis markers and steady stake platform with steel-pipe pile 100 by positioning system
Axis markers are overlapped, and survey the elevation of top surface of steady stake platform and label (see Fig. 6)；Energy is installed on steady stake platform 100 before piling
Mobile absolute altitude instruction device, the absolute altitude instruction device 30 have adjustable height with horizontal pointer or dress laser alignment device
Low and horizontal functional；The horizontal pointer of absolute altitude instruction device 30 is directed toward to the scale side finished with steel-pipe pile 100, according to setting
Steady stake platform top mark height and steel-pipe pile top mark it is high, adjust horizontal pointer to suitable absolute altitude (see Fig. 7), hydraulic hammer is sunk
When steel-pipe pile, record of sunk plies and pile head elevation control are carried out by the relativeness of scale and horizontal pointer with steel-pipe pile,
And carried out with steel-pipe pile and stop hammering mark line (cutting off main lifting lug repetition measurement platform height) into shape, wait stop hammer reading and platform height one
Stop to hammer into shape when cause.
The construction technology of the non-embedding rock single pile of offshore wind power foundation of the invention hangs ship using master and the auxiliary ship that hangs is combined steel pipe
Stake lifting and inserting, and steady stake platform auxiliary positioning is used, piling construction can be efficiently completed, adaptable hammering equipment is also equipped with
And drilling device, the posture of monitored over time and adjustment steel-pipe pile, to guarantee that single pile smoothly and is vertically driven into marine rock layer
In, while specific aim measure is taken, keep hole wall to stablize, the appearance of the unusual conditions such as pre- preventing sticking, burying not only ensure that non-
The bearing capacity of embedding rock single pile and the stability of pile body, also effectively increase construction efficiency, and effectively improve non rock rooted pile
Horizontal resistivity and anti-group of ability, meet the requirement of Structural Design and construction.
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or modification, therefore all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (5)
1. a kind of construction technology of the non-embedding rock single pile of offshore wind power foundation, single pile uses 7.0~7.3m of diameter, 60~80mm of wall thickness
Steel-pipe pile, squeeze into cataclastic shape strong weathered granite, total embedded depth is 39.2~45.9m, height of pile top 15m, stake bottom
About -54~-63m of absolute altitude；The construction technology includes following below scheme：Steel-pipe pile production, steady stake putting up platform, pitching pile, first strike are heavy
Stake, drilling, borehole cleaning, strike-on pile sinking；It is characterized in that,
The steel-pipe pile production process includes tube coupling blanking, tube coupling retaining wall on slope, tube coupling roll-forming, pile body top flange dress
Match, pile body splices and corrosion-inhibiting coating coating step；
The steady stake putting up platform process includes the following steps：
1. steady stake platform includes upper and lower platform, four auxiliary process stakes, two positioning process stakes and a set of positioning system；It is lower flat
Platform and four auxiliary process stakes first pass through steel-pipe pile relative position at the Longkou of locating platform ship and lower platform and are positioned, then into
Then the inserting piling of four auxiliary process stakes of row passes through auxiliary process stake and the auxiliary process pipe casing upper and lower part on lower platform
Steel plate strip firm welding；
2. locating platform ship is first removed, then two positioning process stakes of inserting piling, then by the positioning in positioning process stake and lower platform
Technique pipe casing upper and lower part passes through steel plate strip firm welding；
3. installing upper mounting plate after pitching pile process；
The pitching pile process includes steel-pipe pile lifting, steel-pipe pile enters Longkou, steel-pipe pile positioning is held tightly and steel-pipe pile sinks and sets step；
When carrying out steel-pipe pile lifting step, ship is hung and auxiliary hang lifts by crane steel-pipe pile and soldier piles by the way of ship cooperation lifts using main；
First by the main main lifting lug in two sides for hanging ship elder generation hanging buckle steel-pipe pile, every main lifting lug in side hangs two wirerope, then turns over the auxiliary ship extension that hangs
The wirerope of body lifting lug；Starting again, which makes master hang ship, hangs ship synchronous hoisting with auxiliary, when steel-pipe pile leaves the deck that pile transport is refuted completely
When 0.5m, pause lifting checks the stress condition of every wirerope, continues to lift by crane after without exception；When steel-pipe pile is refuted apart from pile transport
6~7m of deck when, pile transport, which is refuted, exits construction area；Then master hangs ship and hangs ship mutual cooperation completion soldier piles with auxiliary；Complete soldier piles
Afterwards, it is auxiliary hang ship and continue to transfer suspension hook so that wirerope is not stressed, while the main ship that hangs continues to rise suspension hook, when the turn lifting lug of steel-pipe pile
When being in 2~3m of the water surface or more, the turn shackle on steel-pipe pile is extracted out by tender；
When carrying out the steel-pipe pile and entering Longkou step, ship lifting steel-pipe pile is hung by main, and slowly enter the Longkou of steady stake platform, when
Start slowly to transfer steel-pipe pile when the pile center position that steel-pipe pile is in Longkou；When the turn lifting lug on steel-pipe pile is apart from steady stake
When the 1m of platform top surface, stops decentralization steel-pipe pile, then cut off lifting lug is turned over, be completed at the same time the outer Longkou of the lower platform of steady stake platform
The installation of beam；
When carrying out the steel-pipe pile positioning holding step, the posture of steel-pipe pile is first measured, then determine by what is be arranged on steady stake platform
Then the verticality of position system call interception steel-pipe pile adjusts positioning system and holds steel-pipe pile tightly；
When carrying out that the steel-pipe pile is heavy to set step, main to hang ship decentralization wirerope, steel-pipe pile sinks down into mud face under the action of self-weight
Stop sinking after lower certain depth, after confirmation steel-pipe pile is stablized, the main ship that hangs continues to transfer wirerope, is in wirerope and does not stress
And the state that do not break off relations；Sight look into 15 minutes confirmation steel-pipe piles it is unchanged after, release the wirerope at main lifting lug；
When carrying out the first strike pile sinking process, hydraulic hammer and fuller are lifted by crane by the main ship that hangs, when stake top tooling flange and hydraulic hammer
After contact, gradually transfer suspension hook, be stepped up piling weight, observe 15 minutes confirmation steel-pipe pile posture it is unchanged after, open
Hydrodynamic hammer, hydraulic hammer first sink steel-pipe pile with small energy crawl, when steel-pipe pile buries 30m, are changed to continuously sink steel-pipe pile,
The hit energy of hydraulic hammer is ascending；
The drilling process includes drilling machine in place, installation drilling rod, slurrying and drilling and forming hole step；
When carrying out drilling machine step in place, hydraulic hammer is first hung, the upper mounting plate of steady stake platform is then installed, then sets up drilling machine, used
It is configured with the gas lift reverse circulation hydraulic power drilling machine of drag bit and roller cutter bit, is locked drilling machine and steel-pipe pile by pile gripper
Gu；
When carrying out installation drilling rod step, drill bit, drilling rod are installed on drilling machine after assembly well on the main deck for hanging ship again；
Carry out slurrying step when, slurry coat method using do not disperse, low solid phase, highly viscous PHP high performance slurry, first in mud
Bentonite slurry is stirred using slurry mixer in stock tank, is then pumped in steel-pipe pile using slush pump, when in steel-pipe pile
Aperture is crept into after mud property index meets construction requirement；The mud of reacting cycle discharge, is recycled after being purified using mud separator
It uses；
It include following process when progress drilling and forming hole step：
1. first being crept into using drag bit clear water, the welding-on array wirerope brush on the outer diameter guard ring of drill bit, outside wirerope brush
Diameter is greater than 5~10cm of steel-pipe pile internal diameter, to guarantee to scrub clean the stratum attachment on steel-pipe pile inner wall in drilling process；
2. after drill bit drills out steel-pipe pile, atm number, medium bit pressure, slow-speed drilling and forming hole, bore diameter is smaller than the internal diameter of steel-pipe pile
200mm, in drilling process every piece drilling rod of drilling will cleaning bottom of hole, to guarantee that bore diameter and verticality are all satisfied requirement；
3. creep into basement rock, brill replacement roller cutter bit is mentioned, using atm number, medium bit pressure, slow-speed of revolution drilling and forming hole；It is drilling
In the process, preliminary surveying hole depth is carried out using run of steel；
4. protruding into progress precise measurement hole depth in hole using professional measuring staff behind whole hole；
When carrying out borehole cleaning process, by drilling tool lifting extremely from 30~50cm of bottom hole, slow rotary tools, and premium mud is supplemented, into
Row reacting cycle borehole cleaning, while head in retaining hole, prevent collapse hole；
When carrying out strike-on pile sinking process, drilling machine is removed, master hangs ship and repositions, and hydraulic hammer is seated to the top of steel-pipe pile,
Steel-pipe pile is struck to designed elevation by hydraulic hammer.
2. the construction technology of the non-embedding rock single pile of offshore wind power foundation according to claim 1, which is characterized in that inserted described
When the steel-pipe pile of stake process lifts by crane step, first carry out it is auxiliary hang secure operation, another mistake water (flow) direction carry out it is main hangs secure, master hangs
The lifting direction of ship is against the Longkou of steady stake platform, and then berthing is refuted in pile transport, and the main crane for hanging ship, which is rotated to the master of steel-pipe pile, to be hung
At ear, while the auxiliary crane for hanging ship is rotated to the turn lifting lug of steel-pipe pile.
3. the construction technology of the non-embedding rock single pile of offshore wind power foundation according to claim 1, which is characterized in that carrying out institute
When stating the drilling and forming hole step of drilling process, to prevent collapse hole, drill 4~5m, stops drilling, changes hydraulic hammer and carries out pile sinking work
Industry, so circulation are until steel-pipe pile extremely design bottom absolute altitude.
4. the construction technology of the non-embedding rock single pile of offshore wind power foundation according to claim 1, which is characterized in that the construction
Technique is also entering the Longkou stage, heavy setting the stage, opens hammer last stage, normal pile sinking stage, continuous pile sinking stage and stake top absolute altitude control
Stage processed takes measures to control the verticality of steel-pipe pile；
Entering the Longkou stage, using the positioning system top in place after, the wall of steel-pipe pile is leaned against using 120 laser digital display horizontal rules
On face, the verticality of steel-pipe pile is adjusted, verticality starts lower stake after meeting the requirements, until positioning system is fixed when steel-pipe pile enters mud 1m
Band is tight；
Set the stage heavy, after steel-pipe pile enters mud, steady stake platform edge and on the extended line on steel-pipe pile side to be mutually perpendicular to
Mode set up two total stations, keep the observation sight of two total stations orthogonal and tangent with steel-pipe pile side, it is complete by two
Instrument of standing observes the floor projection difference and height difference that two height differences on steel-pipe pile side are 20m or more height, calculates the steel-pipe pile of the direction
Gradient, it is primary in steel-pipe pile every sinking 1m observation, more than requiring to adjust steel-pipe pile by the main ship that hangs in time；
The hammer last stage is being opened, hydraulic hammer needs all-the-way tracking to observe, stops fuller when noting abnormalities immediately and adjust in the fuller stage
The verticality of steel-pipe pile；
In the normal pile sinking stage, in the case where guaranteeing steel pipe pile verticality, hydraulic hammer is started, first with small energy hammer piling,
Crawl 2~3 is hammered into shape, and a period of time is suspended, and is continued crawl 2~3 after without exception and is hammered into shape, is again paused for for a period of time, such 3~4 times, and
Measurement observation steel-pipe pile data, adjust steel-pipe pile posture；15 minutes are observed after adjustment, continues pile sinking after unchanged, every 1~2m
Observation, adjustment are primary, when steel-pipe pile continues to bury 10m, be changed to observe every 3~4m, adjustment it is primary, when steel-pipe pile continue into
When native 10m, it is changed to normal hammer piling；
At the continuous pile sinking stage, only observed when cutting off main lifting lug primary；
In the pile head elevation control stage, go out the cross axis at steel-pipe pile center using GPS setting-out on the lower platform of steady stake platform
And mark, the cross axis markers weight on cross axis markers and steady stake platform with steel-pipe pile is made by positioning system
It closes, surveys the elevation of top surface and label of steady stake platform；Mobile absolute altitude instruction device is installed on steady stake platform before piling, it should
Absolute altitude instruction device has regulating height and horizontal functional with horizontal pointer or dress laser alignment device；Absolute altitude is indicated
The horizontal pointer of device is directed toward the scale side finished with steel-pipe pile, according to the top mark height of the steady stake platform of setting and steel-pipe pile
Top mark is high, adjusts horizontal pointer to suitable absolute altitude, when hydraulic hammer sinks steel-pipe pile, passes through the scale and level with steel-pipe pile
The relativeness of pointer carries out record of sunk plies and pile head elevation control, and carries out with steel-pipe pile and stop hammering mark line into shape, hammers into shape wait stop
Stop hammering into shape when reading consistent with platform height.
5. the construction technology of the non-embedding rock single pile of offshore wind power foundation according to claim 1, which is characterized in that the stake top
Tooling flange is L tee section structure, is fitted closely and is connect with stake top flange by attachment bolt.
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| CN114837178A (en) * | 2022-06-09 | 2022-08-02 | 上海博强重工集团有限公司 | Installation method of wind power foundation pile |
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| CN112726686A (en) * | 2020-12-30 | 2021-04-30 | 保利长大工程有限公司 | Offshore large-diameter single-pile sinking measurement method |
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| CN113638386B (en) * | 2021-08-19 | 2022-09-09 | 中交第三航务工程局有限公司 | Offshore wind power single pile socketed foundation construction is with assembled platform |
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| CN117449760A (en) * | 2023-12-21 | 2024-01-26 | 水发能源集团有限公司 | Soil layer drilling device for foundation construction of wind power equipment |
| CN117449760B (en) * | 2023-12-21 | 2024-03-15 | 水发能源集团有限公司 | Soil layer drilling device for foundation construction of wind power equipment |
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Address after: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Patentee after: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee before: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee before: CCCC Sanya (Xiamen) Engineering Co.,Ltd. Patentee before: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |
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