CN114875914A - Pile pulling assisting device combining electroosmosis method and water pressure and construction method - Google Patents
Pile pulling assisting device combining electroosmosis method and water pressure and construction method Download PDFInfo
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- CN114875914A CN114875914A CN202210568081.XA CN202210568081A CN114875914A CN 114875914 A CN114875914 A CN 114875914A CN 202210568081 A CN202210568081 A CN 202210568081A CN 114875914 A CN114875914 A CN 114875914A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000005370 electroosmosis Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 238000005086 pumping Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims description 49
- 239000007924 injection Substances 0.000 claims description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 238000007667 floating Methods 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 210000004907 gland Anatomy 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 239000013535 sea water Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000002860 competitive effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 hydroxyl ions Chemical class 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 239000013049 sediment Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0052—Removal or dismantling of offshore structures from their offshore location
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/17—Geometrical or physical properties including an electric conductive element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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- 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)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a pile pulling assisting device combining an electroosmosis method and water pressure and a construction method, the pile pulling assisting device comprises a pile body, the pile body is hollow, a pile top platform is arranged at the top of the pile body, a generating set is arranged on the pile top platform, a water pressure mechanism is arranged in the pile body and is positioned at the top of a sea level, the water pressure mechanism comprises a water pressure cover main body, a water pumping and injecting pump set is arranged at the top of the water pressure cover main body, a net-shaped structure body is fixedly connected to the bottom of the water pressure cover main body, an electroosmosis mechanism is arranged at the bottom of the pile body and is positioned in a seabed soil layer, the electroosmosis mechanism comprises a cathode plate and an anode plate which are fixedly connected to two sides of the pile body respectively, a ph sensor is arranged at one side of the pile body close to the cathode plate, and the water pumping and injecting pump set, the cathode plate and the anode plate are electrically connected with the generating set respectively. The invention improves the pile pulling efficiency through the synergistic action of the hydraulic mechanism and the electroosmosis mechanism.
Description
Technical Field
The invention relates to the technical field of offshore wind power single-pile pulling, in particular to a pile pulling assisting device and a construction method by combining an electroosmosis method and water pressure.
Background
Wind power generation has been vigorously developed by many countries around the world as a focus over the past decades. As a green power generation mode, the cost performance of wind power generation forms a competitive advantage with coal power and water power. Offshore wind power generation can further relieve the problem of land resource shortage.
Over time, however, previously built offshore wind power platforms have generally suffered from disassembly problems, with offshore wind power and the most basic form of such offshore constructions being pile foundations, and most often single pile foundations. Due to the vertical bearing capacity and the accumulation of sediment on the seabed, large resistance is often generated on the side surface and the bottom surface of the pile in the pile pulling stage.
At present, pile pulling operation of pile pulling of single offshore wind power piles is complex, pile pulling difficulty is large, and the existing main method comprises the following steps: 1) and (5) vibrating the pile. The soil layer around the pile is destroyed by the vibrations generated by the equipment. 2) And (5) impacting to form a hole and pull the pile. The soil around the pile is washed away by using the pipe pile matched with the slurry, so that the frictional resistance is reduced. 3) And (5) pulling the pile by using the steel sleeve. The friction resistance during pile pulling is reduced by driving and burying the steel sleeve.
Compared with the prior patent with the publication number of CN103741691B, the invention has two design advantages: firstly, a water pressure cover structure body, a net-shaped structure body and a floating body unit are designed into a whole, the upper limit of bearing pressure and the safety coefficient are improved, and the utilization efficiency of the pressure is higher; secondly, this patent of current, high pressure injection device is far away from the pile body, and out the sea water concrete engineering condition, can cause the instability and the power consumptive great of working process, and water pressure lid structure and netted structure can provide work platform for injection device, have effectually guaranteed the stability of pressure injection working process to power consumptive has been reduced. Compared with the prior patent, the first two operation environments of the method are different, the invention considers the engineering environment of seawater, adds an electroosmosis method treatment member, forms a water film on the surface of a pile body through electroosmosis reaction, and improves pile pulling efficiency.
Disclosure of Invention
The invention aims to provide a device for assisting pile pulling by combining an electroosmosis method and water pressure and a construction method, so as to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a device for assisting pile pulling by combining an electroosmosis method and water pressure, which comprises a pile body, wherein the pile body is hollow, a pile top platform is arranged at the top of the pile body, a generating set is arranged on the pile top platform, a water pressure mechanism is arranged in the pile body and is positioned at the top of a sea level, the water pressure mechanism comprises a water pressure cover main body, a water pumping and injecting pump set is arranged at the top of the water pressure cover main body, a net-shaped structure body is fixedly connected to the bottom of the water pressure cover main body, an electroosmosis mechanism is arranged at the bottom of the pile body and is positioned in a seabed soil layer, the electroosmosis mechanism comprises a cathode plate and an anode plate which are fixedly connected to two sides of the pile body respectively, a ph sensor is arranged at one side of the pile body, which is close to the cathode plate, and the water pumping and injecting pump set, the cathode plate and the anode plate are electrically connected with the generating set respectively.
Preferably, be equipped with first through-hole in the water pressure lid main part, the both sides of first through-hole are equipped with the second through-hole respectively, first through-hole with the second through-hole respectively with the internal intercommunication of stake, install high-pressure water injection valve in the first through-hole, one of them install first water injection valve in the second through-hole, another install discharge valve in the second through-hole, first water injection valve with high-pressure water injection valve respectively with pump group intercommunication.
Preferably, the pumping and injecting water pump group is in including the rigid coupling a plurality of first water pumpers and the high pressure water injection machine of water gland main part top surface, first water pumper with first water injection valve intercommunication, high pressure water injection machine with high pressure water injection valve intercommunication, first water pumper with high pressure water injection machine respectively with generating set electric connection.
Preferably, a water pressure plug is installed in the water pressure cover main body, pressure sensors are symmetrically arranged at the bottom of the water pressure plug, and the pressure sensors are located on two sides of the first through hole.
Preferably, a prefabricated horse tooth area is arranged in the pile body, the net-shaped structure body comprises a prefabricated member matched with the prefabricated horse tooth area, and a net-shaped steel frame structure body is arranged in the prefabricated member.
Preferably, a plurality of floating body units are fixedly connected to the bottom of the mesh-shaped structure.
Preferably, high-resistance coating grooves are symmetrically formed in two sides of the pile body, the anode plate and the cathode plate are arranged in the high-resistance coating grooves respectively, and the anode plate and the cathode plate are communicated through communicating pipes.
Preferably, the ph inductor is arranged on the outer side of the cathode plate and is positioned in the high-resistance coating groove.
A construction method of a pile pulling assisting device by combining an electroosmosis method and water pressure comprises the following steps:
a. installing a pile top platform and power generation equipment;
b. selecting a prefabricated horse tooth area suitable for the inner side of the pile body according to the sea surface height during pile extraction work, and installing a net-shaped structure body in the prefabricated horse tooth area;
c. a floating body unit is arranged at the bottom of the reticular structure body and is used for pressurizing the interior of the pile body for the first time; (ii) a
d. A water pressure cover main body and a water pumping and injecting pump set are arranged at the top of the reticular structure body, and water is injected into the pile body;
e. after the water injection is finished, power is supplied to the electroosmosis mechanism, electroosmosis reaction is started, and the pile is pulled out.
The invention discloses the following technical effects: the water pressure mechanism comprises a water pressure cover main body, a water pumping and injecting pump set is arranged on the water pressure cover main body and used for injecting water into the pile body, a working platform can be provided for the water pumping and injecting pump set through the arrangement of the water pressure cover main body and the net-shaped structure body in the pile body, the stability in the pressure injection process is effectively guaranteed, the energy consumption can be reduced, the electroosmosis mechanism is buried into a seabed soil layer, a water film is formed on the surface of the pile body through electroosmosis reaction, and the pile pulling efficiency is improved. The invention improves the pile pulling efficiency through the synergistic action of the hydraulic mechanism and the electroosmosis mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the pile pulling assisting device of the present invention using electroosmosis and water pressure in combination;
FIG. 2 is a schematic structural diagram of a hydraulic mechanism;
FIG. 3 is a schematic view of the structure of the electroosmosis mechanism;
FIG. 4 is a schematic structural view of a hydraulic plug;
FIG. 5 is a schematic structural view of a main body of the hydraulic cover;
FIG. 6 is a top view of the hydraulic cap body;
FIG. 7 is a schematic view of a steel lattice structure;
wherein: 1. a pile body; 2. a generator set; 3. a pile top platform; 4. a hydraulic cap body; 5. pumping and injecting a water pump set; 6. a cathode plate; 7. an anode plate; 8. a ph sensor; 9. a first through hole; 10. a second through hole; 11. a first water pump; 12. a high-pressure water injection machine; 13. a high pressure water injection valve; 14. a first water injection valve; 15. an exhaust valve; 16. water pressure plugging; 17. a pressure sensor; 18. prefabricating a horse tooth area; 19. a prefabricated member; 20. a net-shaped steel frame structure; 21. a floating body unit; 22. high resistance coating grooves; 23. a communication pipe is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-7, the invention provides a device for assisting pile pulling by combining an electroosmosis method and water pressure, which comprises a pile body 1, wherein the pile body 1 is hollow, a pile top platform 3 is arranged at the top of the pile body 1, a generator set 2 is arranged on the pile top platform 3, a hydraulic mechanism is arranged in the pile body 1 and is positioned at the top of a sea level, the hydraulic mechanism comprises a water pressure cover main body 4, a water pumping and injecting pump set 5 is arranged at the top of the water pressure cover main body 4, a net-shaped structure body is fixedly connected at the bottom of the water pressure cover main body 4, an electroosmosis mechanism is arranged at the bottom of the pile body 1 and is positioned in a seabed soil layer, the electroosmosis mechanism comprises a cathode plate 6 and an anode plate 7 which are respectively and fixedly connected at two sides of the pile body 1, a ph inductor 8 is arranged at one side of the pile body 1 close to the cathode plate 6, and the water pumping and injecting pump set 5, the cathode plate 6 and the anode plate 7 are respectively and electrically connected with the generator set 2.
The water pressure mechanism includes water gland main part 4, set up on water gland main part 4 and take out water injection pump package 5 for carry out the water injection in to pile body 1, can take out water injection pump package 5 for the water injection through set up water gland main part 4 and network structure body in pile body 1 and provide work platform, effectively guarantee the stability of pressure injection in-process and can reduce the consumption of the energy, through imbedding the electric osmosis mechanism in the seabed soil layer, through the electric osmosis reaction, form the water film on pile body 1 surface, thereby improve pile pulling efficiency. The invention improves the pile pulling efficiency through the synergistic action of the hydraulic mechanism and the electroosmosis mechanism.
Further optimize the scheme, water pressure lid main part 4 is the prefab, and be light high strength waterproof material, be equipped with first through-hole 9 in the water pressure lid main part 4, the both sides of first through-hole 9 are equipped with second through-hole 10 respectively, first through-hole 9 and second through-hole 10 communicate in with pile body 1 respectively, install high-pressure water injection valve 13 in the first through-hole 9, install first water injection valve 14 in one of them second through-hole 10, install discharge valve 15 in another second through-hole 10, first water injection valve 14 and high-pressure water injection valve 13 communicate with pump group 5 respectively.
According to the further optimization scheme, the pumping and injecting water pump set 5 comprises a plurality of first water pumps 11 and a plurality of high-pressure water injecting machines 12 which are fixedly connected to the top surface of the water gland main body 4, seawater is pumped up, water is injected below the net-shaped structure body of the pulled pile body 1 through the first through holes 9 and the second through holes 10, the first water pumps 11 are communicated with the first water injecting valves 14, the high-pressure water injecting machines 12 are communicated with the high-pressure water injecting valves 13, and the first water pumps 11 and the high-pressure water injecting machines 12 are respectively electrically connected with the generator set 2.
Further optimize the scheme, install water pressure stopper 16 in the water pressure lid main part 4, the bottom symmetry of water pressure stopper 16 is equipped with pressure sensor 17, and pressure sensor 17 is located the both sides of first through-hole 9, and pressure sensor 17 and external control ware electric connection.
Sea water is injected into the lower portion of the net-shaped structure body of the pulled pile body 1 through the first water injection valve 14 through the first water pump 11, after water injection is completed, when water flow overflows from the exhaust valve 15, the first water injection valve 14 and the exhaust valve 15 are detached, the prefabricated water pressure plug 16 is arranged in the middle of the water pressure cover main body 4, the second through hole 10 is reserved, riveting and welding are carried out through the reserved steel bar joints of the first water injection valve and the second exhaust valve, and pouring and fixing are carried out through concrete. The hydraulic plug 16 is a rivet-shaped high-strength reinforced concrete member, the pressure sensor 17 is installed at the bottom of the hydraulic plug 16, and after the hydraulic plug 16 is connected with the hydraulic cover main body 4, the high-pressure water injection valve 13 is opened to be connected with the high-pressure water injector 12, and the high-pressure water injection process is started until the pressure transmitted back by the pressure sensor 17 reaches a planned value.
According to the further optimization scheme, a prefabricated horse tooth area 18 is arranged in the pile body 1, the net-shaped structure body comprises a prefabricated part 19 matched with the prefabricated horse tooth area 18, and a net-shaped steel frame structure body 20 is arranged in the prefabricated part 19.
The prefabricated horse-tooth area 18 is arranged in the pile body 1 and is of a tooth-shaped structure above the sea level, a steel bar joint is further reserved in the prefabricated horse-tooth area, the prefabricated horse-tooth area 18 can be mutually embedded with the prefabricated member 19, the steel bar joint embedded between the prefabricated member 19 and the pile body 1 is riveted and welded after the prefabricated member 19 and the pile body are embedded and connected, and cement pouring is conducted at the embedding position.
The net-shaped steel frame structure 20 is a high-strength steel frame prefabricated member, specifically, three layers of hexagonal net racks are connected by a plurality of annular steel bars, the whole external profile is cylindrical, and a steel bar joint is reserved for connecting with the prefabricated member 19.
In a further optimized scheme, a plurality of floating body units 21 are fixedly connected to the bottom of the net-shaped structure body.
The floating body unit 21 is formed by connecting square body components made of high-strength steel cables and high-strength light materials, after the net-shaped steel frame structure body 20 and the prefabricated member 19 are installed, the floating body unit 21 is fixed at the bottom of the net-shaped steel frame structure body 20 through welding, the square body components are placed at the bottom of the net-shaped steel frame structure body, the floating body unit 21 can provide partial buoyancy according to the pressure difference between the upper surface and the lower surface of the floating body unit 21 after water injection is completed, the effect of pressure on pile pulling is enhanced, and the pile pulling process is facilitated.
Further optimize the scheme, the bilateral symmetry of pile body 1 is equipped with high resistance coating recess 22, is equipped with anode plate 7 and negative plate 6 in the high resistance coating recess 22 respectively, communicates through communicating pipe 23 between anode plate 7 and the negative plate 6.
In a further optimized scheme, a ph inductor 8 is arranged on the outer side of the cathode plate 6, and the ph inductor 8 is positioned in the high-resistance coating groove 22.
After the power is switched on, the anode plates 7 and the cathode plates 6 on the two sides of the pile body 1 can generate potential difference on the two sides of the pile body 1, so that an electroosmosis effect is generated, pore water in seabed soil silt can be attracted by the cathode plates 6, at the moment, the pore water can be separated out from the area, close to the cathode plates 6, on the outer side of the pile body 1, water is stored in the high-resistance coating groove 22, and under the water pressure and the pressure on the outer side of the pile, a water film is formed on the surface of the pile by flowing out of the high-resistance coating groove 22, and the effect of reducing the friction resistance is achieved.
The communicating pipe 23 communicates the cathode plate 6 and the anode plate 7 on the inner and outer sides, so that fluid can circulate through the communicating pipe, and the process of electroosmosis reaction to generate a water film is accelerated. And the electroosmosis effect can be improved by previously storing the corresponding solution therein.
The PH inductor 8 is embedded in the high resistance coating groove 22 of the pile body 1 close to the cathode plate 6, because the hydroxyl ions are adsorbed on the cathode in the electroosmosis reaction, the change of the pH value near the high resistance coating groove 22 can be caused, when the electroosmosis effect is continued, the solution in the communicating pipe 23 is accelerated, when the water film appears on the pile side, the PH value can approach to the neutral stable value, and at the moment, the pile pulling operation can be carried out.
A construction method for assisting pile pulling by combining an electroosmosis method and water pressure comprises the following steps:
a. installing a generator set 2 and a pile top platform 3, or replacing the generator set by power generation equipment on a construction ship;
b. installing a net-shaped structure body in the pile body 1, firstly selecting a prefabricated horse teeth area 18 suitable for the inner side of the pile according to the sea surface height during pile pulling work, placing a prefabricated part 19 in the prefabricated horse teeth area 18, then riveting and welding a steel bar joint, placing a net-shaped steel frame structure body 20 in the inner side of the prefabricated part 19, riveting and welding the net-shaped steel frame structure body and the prefabricated part 19 with the reserved steel bar joint, and fixing the net-shaped steel frame structure body 20;
c. installing a floating body unit 21 at the bottom of the net-shaped structure, welding a steel cable of the floating body unit 21 with the net-shaped steel frame structure 20 after the net-shaped steel frame structure 20 is fixed, then placing a main body member of the floating body unit 21 below the net-shaped steel frame structure 20, and increasing a part of water pressure after water is filled;
d. a water gland main body 4 and a water pumping and injecting pump group 5 are arranged at the top of the reticular structure body, and water is injected into the pile body 1; after the net-shaped structure body and the floating body unit 21 are installed, the water pressure cover main body 4 is installed on the net-shaped structure body, reserved steel bar joints are welded with the net-shaped structure body firstly, then waterproof cement is used for processing and reinforcing, after the water pressure cover main body 4 is installed, the water pumping and injecting pump group 5 is installed on the water pressure cover main body 4, a hole is formed in the pile body 1 to facilitate the water pumping and injecting pump group 5 to pump water from a seawater plane, then the water is pumped into the inner space of the pile body 1 below the net-shaped structure body through the first water injecting valve 14, after the exhaust valve 15 overflows, the first water injecting valve 14 and the exhaust valve 15 are detached, the prefabricated water pressure plug 16 is installed in the middle reserved second through hole 10 of the water pressure cover main body 4, riveting and welding are carried out through the reserved steel bar joints of the water pressure cover main body and the floating body unit 21, and pouring and fixing are carried out through concrete. The hydraulic plug 16 is a rivet-shaped high-strength reinforced concrete member, the bottom of the hydraulic plug member is provided with a pressure sensor 17, then the high-pressure water injection valve 13 is opened to be connected with the high-pressure water injection machine 12, and the high-pressure water injection process is started until the pressure transmitted back by the pressure sensor 17 reaches a planned value;
e. after the water injection is finished, power is supplied to the electroosmosis mechanism, electroosmosis reaction is started, the pile is pulled out, power is supplied to the electroosmosis mechanism, electroosmosis reaction is started, the numerical value transmitted back by the ph sensor 8 is observed, and pile pulling operation can be carried out when the numerical value approaches to a neutral stable value.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (9)
1. The utility model provides an utilize electroosmosis method and water pressure to combine to assist pile pulling device which characterized in that: including pile body (1), cavity in pile body (1), the top of pile body (1) is equipped with pile bolck platform (3), be equipped with generating set (2) on pile bolck platform (3), be equipped with hydraulic pressure mechanism in pile body (1), hydraulic pressure mechanism is located the top at sea level, hydraulic pressure mechanism includes water gland main part (4), the top of water gland main part (4) is equipped with takes out water pump package (5), the bottom rigid coupling of water gland main part (4) has netted structure, the bottom of pile body (1) is equipped with the electroosmosis mechanism, the electroosmosis mechanism is located seabed stratum of earth, the electroosmosis mechanism is including being in respectively the rigid coupling negative plate (6) and anode plate (7) of pile body (1) both sides, pile body (1) is close to one side of negative plate (6) is equipped with ph inductor (8), take out water pump package (5), The cathode plate (6) and the anode plate (7) are respectively electrically connected with the generator set (2).
2. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 1, wherein: be equipped with first through-hole (9) in water gland main part (4), the both sides of first through-hole (9) are equipped with second through-hole (10) respectively, first through-hole (9) with second through-hole (10) with respectively intercommunication in the pile body (1), install high-pressure water injection valve (13) in first through-hole (9), one of them install first water injection valve (14) in second through-hole (10), another install discharge valve (15) in second through-hole (10), first water injection valve (14) with high-pressure water injection valve (13) respectively with pump group (5) intercommunication of taking out water injection.
3. The device for assisting pile pulling using electroosmosis in combination with water pressure as claimed in claim 2, wherein: take out water injection pump package (5) and include the rigid coupling a plurality of water pumper (11) and high-pressure water injection machine (12) of water gland main part (4) top surface, first water pumper (11) with first water injection valve (14) intercommunication, high-pressure water injection machine (12) with high-pressure water injection valve (13) intercommunication, first water pumper (11) with high-pressure water injection machine (12) respectively with generating set (2) electric connection.
4. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 3, wherein: install water pressure stopper (16) in water gland main part (4), the bottom symmetry of water pressure stopper (16) is equipped with pressure sensor (17), pressure sensor (17) are located the both sides of first through-hole (9).
5. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 4, wherein: be equipped with prefabricated horse tooth region (18) in pile body (1), the reticular structure body includes prefabricated member (19) of prefabricated horse tooth region (18) looks adaptation, be equipped with reticular steel frame structure body (20) in prefabricated member (19).
6. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 5, wherein: the bottom of the reticular structure body is fixedly connected with a plurality of floating body units (21).
7. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 1, wherein: the bilateral symmetry of pile body (1) is equipped with high resistance coating recess (22), be equipped with respectively in high resistance coating recess (22) anode plate (7) with negative plate (6), anode plate (7) with communicate through communicating pipe (23) between negative plate (6).
8. The device for assisting pile extraction by using electroosmosis in combination with hydraulic pressure according to claim 7, wherein: the ph inductor (8) is arranged on the outer side of the cathode plate (6), and the ph inductor (8) is located in the high-resistance coating groove (22).
9. A construction method for assisting pile pulling by combining an electroosmosis method and water pressure comprises the following steps:
a. installing a pile top platform (3) and power generation equipment;
b. selecting a prefabricated horse teeth area (18) suitable for the inner side of the pile body (1) according to the sea surface height during pile extraction, and installing a net-shaped structure body in the prefabricated horse teeth area (18);
c. a floating body unit (21) is arranged at the bottom of the reticular structure body and is used for pressurizing the interior of the pile body (1) for the first time;
d. a water gland main body (4) and a water pumping and injecting pump group (5) are arranged at the top of the reticular structure body, and water is injected into the pile body (1);
e. after the water injection is finished, power is supplied to the electroosmosis mechanism, electroosmosis reaction is started, and the pile is pulled out.
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| US20200018034A1 (en) * | 2016-12-24 | 2020-01-16 | Ørsted Wind Power A/S | Foundation for a structure |
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| CN103741691A (en) * | 2014-02-11 | 2014-04-23 | 中国石油大学(华东) | Device and method for dismantling offshore pile pipe through reversed pulling under pressure |
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