CN115262614A - Embedded rock-socketed pile foundation and construction method - Google Patents
Embedded rock-socketed pile foundation and construction method Download PDFInfo
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- CN115262614A CN115262614A CN202211081355.9A CN202211081355A CN115262614A CN 115262614 A CN115262614 A CN 115262614A CN 202211081355 A CN202211081355 A CN 202211081355A CN 115262614 A CN115262614 A CN 115262614A
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- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000005553 drilling Methods 0.000 claims abstract description 55
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 20
- 238000004873 anchoring Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000035515 penetration Effects 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 239000004567 concrete Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 6
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- 230000001154 acute effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
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- 238000006386 neutralization reaction Methods 0.000 description 1
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- 238000004513 sizing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 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
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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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Abstract
The invention relates to the technical field of ocean engineering, in particular to an embedded rock-socketed pile foundation and a construction method. An implantable rock-socketed pile foundation suitable for seabed rock-socketed construction, comprising: the platform is provided with an operation plane and a main leg, and the main leg is provided with a mounting through hole; the pile casing is fixedly arranged in the installation through hole in a penetrating manner, a guide through hole is formed in the pile casing, the end face of one end of the pile casing is flush with the operation plane, and the end face of the other end of the pile casing extends into the seabed covering layer to the top surface of the bedrock; the micro-pile structure comprises a core rod, and the drilling end of the core rod is fixedly arranged in the seabed bedrock so as to anchor and connect the seabed bedrock and the core rod. The invention aims to solve the technical problem that when an included angle exists between a pile foundation and the surface of a seabed, a reinforcement cage cannot be smoothly put down due to the inclination of a drill hole, and a high-quality concrete core column is difficult to form.
Description
Technical Field
The invention relates to the technical field of ocean engineering, in particular to an embedded rock-socketed pile foundation and a construction method.
Background
Under the background of carbon neutralization, the development and utilization of ocean wind energy, tidal energy and wave energy are important ways for realizing energy transformation, and the fixed-type basic offshore wind power becomes an important direction for the development of new energy. In the ocean, geological conditions are complex, and offshore wind power fixed foundations comprise single-pile foundations, suction tube jacket foundations, multi-pile socketed jacket foundations and the like. The pile foundation types of the multi-pile socketed jacket foundation are further divided into core column type socketed piles and implanted socketed piles. The construction steps of the implanted rock-socketed pile mainly comprise: setting up a construction platform, driving a steel pile casing, drilling a hole to a designed pile bottom elevation, implanting the steel pipe pile of the prefabricated pile core concrete at the pile bottom into the hole, grouting into a gap between the outer wall of the steel pipe pile and the inside of the drilled hole, pulling out the steel pile casing or cutting off the steel pile casing above a sea bed surface. The core column type rock-socketed pile construction steps mainly comprise: erecting a construction platform, driving a steel pipe pile, drilling to the designed pile bottom elevation, placing a reinforcement cage in a hole, pouring concrete from bottom to top to form a reinforced concrete core column, and cutting off an upper extension section of the steel pipe pile.
At present, the socketed pile construction process is mainly to the pile foundation of vertical direction, and the major diameter socketed construction degree of difficulty is big, if there is certain contained angle (promptly, socketed batter pile) in pile foundation and seabed surface, when drilling the slope, the steel reinforcement cage is because flexible structure can't be transferred smoothly, is difficult to form high-quality concrete stem, influences construction quality and efficiency.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that when an included angle exists between a pile foundation and the seabed surface, a reinforcement cage cannot be smoothly placed due to the inclination of a drill hole, and a high-quality concrete core column is difficult to form in the prior art, so that the embedded rock-socketed pile foundation and the construction method are provided.
In order to solve the above problems, the present invention provides an embedded rock-socketed pile foundation, which is suitable for seabed rock-socketed construction, and comprises:
the platform is provided with an operation plane and a main leg, and the main leg is provided with a mounting through hole;
the pile casing is fixedly arranged in the installation through hole in a penetrating mode, a guide through hole is formed in the pile casing, the end face of one end of the pile casing is flush with the operation plane, and the end face of the other end of the pile casing extends into the seabed covering layer to reach the top face of the bedrock surface;
the micro-pile structure comprises a core bar, and the drilling end of the core bar is fixedly arranged in the seabed bedrock so as to anchor and connect the seabed bedrock and the core bar.
Optionally, the micro-pile structure further comprises a guide tube, and the core rod is arranged in the guide tube.
Optionally, slurry is poured between the platform and the pile casing and between the pile casing and the guide pipe.
Optionally, the central axis of the installation through hole, the central axis of the pile casing, the central axis of the guide tube, and the central axis of the core rod are all arranged in parallel.
Optionally, a drill bit is arranged at the end of the drilling end, a grouting channel is arranged on the core rod, and a grouting through hole is formed in the side wall of the drilling end.
Optionally, a shear ring is disposed on a sidewall of the drilling end.
A construction method of an embedded rock-socketed pile foundation comprises the following steps:
the platform is placed on the sea level;
hoisting the pile casing to the position right above the main leg for pile insertion, and slowly lowering the pile casing to the surface of the seabed;
sinking the pile casing into the seabed until the pile bottom reaches the designed penetration depth, and cutting off the pile body of the pile casing exceeding the elevation of the operation plane after pile sinking is finished;
slowly extending a core bar of the micro-pile structure along the guide through hole, enabling a drilling end of the core bar to enter a seabed bedrock of a seabed and reach a designed penetration depth through drilling, and realizing anchoring of the micro-pile structure and the seabed through drilling;
after drilling is finished, the core bar is sequentially anchored in seabed bedrock through slurry, drilling and grouting are repeated, and a plurality of micro-pile structures are formed.
Optionally, after the pile body of the pile casing exceeding the elevation of the operation plane is cut, grouting materials into the circular seams between the pile casing and the main legs and the gaps between the pile casing and the guide pipes respectively.
Optionally, the slurry enters the gap between the core rod and the seabed through the grouting through hole along the grouting passage.
Optionally, the construction method of the implanted rock-socketed pile foundation is applied to the implanted rock-socketed pile foundation.
The technical scheme of the invention has the following advantages:
1. the invention provides an implanted rock-socketed pile foundation, which comprises: the platform is provided with an operation plane and a main leg, and the main leg is provided with a mounting through hole; the pile casing is fixedly arranged in the installation through hole in a penetrating mode, a guide through hole is formed in the pile casing, the end face of one end of the pile casing is flush with the operation plane, and the end face of the other end of the pile casing extends into the seabed covering surface to reach the top surface of the bedrock surface; the micro-pile structure is fixed in the guide through hole and comprises a core rod, and the drilling end of the core rod is fixed in the seabed bedrock so that the seabed bedrock is connected with the core rod in an anchoring manner. When the core bar is fixed in the seabed, the formed micro-pile structure is fixedly connected with the seabed to drive the pile protecting cylinder and the platform to be fixedly connected with the seabed so as to realize the stability of the platform. The interaction of the multiple micro-pile structures and the rock mass around the pile plays an anchoring role of the large-diameter pile foundation, a reinforcement cage does not need to be placed in a drilled hole after the seabed bedrock is drilled, the problem that the reinforcement cage cannot be smoothly placed due to the fact that the reinforcement cage is of a flexible structure is solved, the core rod forms a high-quality core column, and construction quality and efficiency are improved. Compared with the characteristics of long time consumption and high risk of a drilling process in large-diameter drilling, the problems of hole collapse and drill sticking are solved, the micro-pile structure cannot be subjected to hole collapse and drill sticking in the drilling machine and the anchoring process, the drilling difficulty and the drilling time of the micro-pile are low due to the small diameter, and even if one micro-pile has the problems of drill sticking and the like, other micro-pile structures cannot be influenced, so that the micro-pile structure has the advantage of low risk, and is particularly suitable for inclined or vertical drilling under the geological condition of large rock stratum fluctuation.
2. The micro-pile structure of the implanted rock-socketed pile foundation further comprises a guide pipe, and the core rod is arranged in the guide pipe, so that the core rod moves along the guide pipe, and the core rod is prevented from deviating in the drilling process.
3. Slurry is poured between the platform and the pile casing and between the pile casing and the guide pipe so as to respectively fix the platform and the pile casing and fix the pile casing and the guide pipe.
4. According to the implanted rock-socketed pile foundation provided by the invention, the central axis of the installation through hole, the central axis of the pile casing, the central axis of the guide pipe and the central axis of the core rod are arranged in parallel, so that the construction difficulty is reduced, and the stability of an inclined pile foundation is ensured.
5. According to the implanted rock-socketed pile foundation provided by the invention, the end part of the drilling end is provided with the drill bit, the core rod is provided with the grouting channel, and the side wall of the drilling end is provided with the grouting through hole. After the drill bit drills into the designed depth inside the seabed, slurry moves towards the drilling end direction along the grouting channel and flows out of the core rod through the grouting through hole, and a gap between the core rod and the seabed is filled, so that the core rod and the seabed are fixed together.
6. According to the implanted rock-socketed pile foundation provided by the invention, the shear ring is arranged on the side wall of the drilling end, and the shear ring is designed to increase the contact area between the core rod and slurry, so that the acting force between the core rod and the inner wall of the drill hole is enhanced, the moving difficulty of the core rod is increased, and the stability between the core rod and a seabed is more stable.
7. The invention provides a construction method of an implanted rock-socketed pile foundation, wherein a platform is placed on the sea level; hoisting the pile casing to the position right above the main leg for pile insertion, and slowly lowering the pile casing to the surface of the seabed; sinking the pile casing into the seabed until the pile bottom reaches the designed soil penetration depth, and cutting off the pile body of the pile casing exceeding the elevation of the operation plane after pile sinking is finished; slowly extending a core rod of the micro-pile structure along the guide through hole, enabling a drilling end of the core rod to enter a seabed bedrock through drilling and reach a designed penetration depth, and realizing anchoring of the micro-pile structure and the seabed through drilling; after drilling, the core bar is sequentially anchored in seabed bedrock through slurry, drilling and grouting are repeated, and a plurality of micro-piles are formed. By the method, the steel reinforcement cage does not need to be placed after the inclined hole is drilled in the embedded rock, the core rod forms the high-quality core column, and construction quality and efficiency are improved.
8. According to the construction method of the implanted rock-socketed pile foundation, after the pile body of the pile casing exceeding the elevation of the operation plane is cut off, slurry is respectively poured into the circular seams between the pile casing and the main leg and the gaps between the guide through hole and the guide pipe, so that the pile casing and the main leg and the pile casing and the guide pipe are fixed through the slurry.
9. The invention provides a construction method of an implanted rock-socketed pile foundation, which is characterized in that slurry enters a gap between a core bar and a seabed through a grouting through hole along a grouting channel so as to fix the core bar and the seabed together.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an implanted rock-socketed pile foundation provided in an embodiment of the invention;
fig. 2 is a schematic structural view of a main leg, a pile casing and a guide pipe provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a gap between a core bar, a core bar and a seabed according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the drill end of a core rod provided in an embodiment of the present invention.
Description of reference numerals: 1. a platform; 11. an operation plane; 12. a main leg; 2. pile casing; 21. a guide tube; 22. a gap; 3. a core bar; 31. drilling a drilling end; 32. sizing agent; 311. a drill bit; 312. a side wall; 313. a shear ring; 314. grouting a channel; 315. grouting the through hole; 4. and (5) performing circular seam welding.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of the implantable rock-socketed pile foundation shown in fig. 1-4 comprises: the platform 1 is provided with an operation plane 11 and two main legs 12, inclined struts are fixedly connected between the adjacent main legs 12 respectively, each main leg 12 is provided with an installation through hole, a barrel protection pile 2 is fixedly arranged in each installation through hole in a penetrating mode, and six micro-pile structures arranged at intervals are arranged in a guide through hole of each barrel protection pile 2 respectively. In particular, the main leg 12 is an oblique main leg, i.e. the main leg 12 is arranged at an acute angle to the sea surface. The diameter of the micro-pile structure is 150-300mm.
As shown in fig. 2, 3 and 4, each micropile structure includes a guide tube 21 and a core rod 3, wherein the core rod 3 is disposed in the guide tube 21. Specifically, the core rod 3 is a drill rod. In order to fixedly connect the main leg 12 with the pile casing 2, the pile casing 2 and the guide pipe 21, slurry 32 is respectively filled in the annular seam 4 between the main leg 12 and the pile casing 2 and the gap 22 between the pile casing 2 and the guide pipe 21. Specifically, the slurry 32 is a poured cement-based cementitious material. In order to ensure that the inclination of each core rod 3 entering the seabed is the same, the central axis of the installation through hole, the central axis of the pile casing 2, the central axis of the guide pipe 21 and the central axis of the core rod 3 are arranged in parallel.
As shown in fig. 3 and 4, two ends of the core rod 3 are respectively a connecting end and a drilling end 31, the end of the drilling end 31 is provided with a drill 311, and the connecting end is fixedly connected with a drilling machine. In order to fill the gap between the core rod 3 and the seabed, the core rod 3 is provided with a grouting passage 314, the side wall 312 of the drilling end 31 is provided with a grouting through hole 315, and the slurry 32 enters the gap between the core rod 3 and the seabed through the grouting through hole 315 along the grouting passage 314, so that the core rod 3 is fixedly connected with the seabed. To enhance the force between the core rod 3 and the inner wall of the borehole, three shear rings 313 are provided on the side wall 312 of the drilling end 31.
The invention also provides a construction method of the embedded rock-socketed pile foundation, which comprises the following steps:
the platform 1 is placed on the sea surface and the platform 1 is erected by the main legs 12, wherein the lower end faces of the main legs 12 are flush with the surface of the seabed coating and the upper end faces of the main legs 12 extend above the sea surface.
The pile casing protection pile 2 is lifted to the position right above the main leg 12 for pile insertion, the central axis of the pile casing protection pile 2 is kept consistent with the central axis of the main leg 12 by using a guide block inside the main leg 12 in the pile insertion process, and the pile casing protection pile is slowly lowered into a seabed covering layer;
and sinking the pile casing 2 into the seabed by using a hydraulic hammer until the pile bottom reaches the designed penetration depth, namely, the part of the pile casing 2, which exceeds the lower end face of the main leg 12, penetrates into the seabed covering layer until the end face of the pile casing reaches the top surface of the foundation layer. After pile sinking is finished, cutting off the pile body of the pile casing 2 with the elevation exceeding the operation plane 11, and pouring slurry 32 into the annular gap 4 between the pile casing 2 and the main leg 12;
after the slurry 32 meets the strength requirement, hoisting the micro pile construction platform 1 to the operation plane 11, moving the position of a drilling machine to one side of the main leg 12, adjusting the base of the drilling machine by using a jack, enabling the inclination of the frame of the drilling machine to be consistent with the inclination of the pile casing 2, and fixing the base of the drilling machine;
installing a standard core rod 3 on a drilling machine frame, enabling the inclination of the core rod 3 to be consistent with that of the pile casing 2, enabling the core rod 3 to penetrate into the guide pipe 21, starting drilling, continuously increasing the length of the core rod 3 in the drilling process until the core rod reaches the design requirement, and injecting slurry 32 through a grouting channel 314 in the core rod 3 after drilling into the seabed to a set depth, so that the slurry 32 reaches a gap between the core rod 3 and the seabed through a grouting through hole 315;
repeating the previous step until drilling and anchoring of a plurality of core piles are completed, and further forming a plurality of core piles which are arranged at intervals;
after the anchoring of the plurality of core piles arranged at intervals is completed, slurry 32 is poured into the gap 22 between the core rod 3 and the guide tube 21.
The implanted rock-socketed pile foundation provided by the invention has low construction risk, forms a high-quality core column, and improves the construction quality and efficiency.
Alternatively, the number of main legs 12 may be 3, 4 or even more.
As an alternative embodiment, the main leg 12 is a vertical main leg, i.e. the main leg 12 is arranged vertically to the sea level.
As an alternative embodiment, the number of micropile structures may also be 2, 3, 4 or even more.
As an alternative embodiment, the number of shear rings 313 may also be 1, 2, 4 or even more.
Alternatively, the gap 22 between the casing pile 2 and the guide pipe 21 may be filled with the grout 32 in site construction.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. An implantable rock-socketed pile foundation, suitable for seabed rock-socketed construction, comprising:
the platform (1) is provided with an operation plane (11) and a main leg (12), and the main leg (12) is provided with a mounting through hole;
the cylinder protecting pile (2) is fixedly arranged in the installation through hole in a penetrating mode, a guide through hole is formed in the cylinder protecting pile (2), the end face of one end of the cylinder protecting pile (2) is flush with the operation plane (11), and the end face of the other end of the cylinder protecting pile extends into the seabed covering layer to the top face of the foundation layer;
the micro pile structure is fixedly arranged in the guide through hole and comprises a core rod (3), and a drilling end (31) of the core rod (3) is fixedly arranged in the seabed bedrock so that the seabed bedrock is connected with the core rod (3) in an anchoring manner.
2. The implantable rock-socketed pile foundation according to claim 1, wherein the micro-pile structure further comprises a guide tube (21), and the core rod (3) is arranged in the guide tube (21).
3. The implantable rock-socketed pile foundation according to claim 2, characterized in that a slurry (32) is poured between the platform (1) and the casing pile (2) and between the casing pile (2) and the guide pipe (21).
4. The implantable rock-socketed pile foundation according to claim 2, characterized in that the central axis of the installation through hole, the central axis of the pile casing (2), the central axis of the guide tube (21) and the central axis of the core rod (3) are all arranged in parallel.
5. The implantable rock-socketed pile foundation according to any one of claims 1 to 4, wherein a drill bit (311) is arranged at the end of the drilling end (31), the core rod (3) is provided with a grouting channel (314), and a grouting through hole (315) is arranged on the side wall (312) of the drilling end (31).
6. An implantable rock-socketed pile foundation according to claim 5, characterized in that a shear ring (313) is provided on the side wall (312) of the drilling end (31).
7. A construction method of an embedded rock-socketed pile foundation is characterized by comprising the following steps:
the platform (1) is placed on the sea level;
hoisting the pile casing (2) to the position right above the main leg (12) for pile insertion, and slowly lowering the pile casing to the surface of the seabed;
sinking the pile (2) into the seabed until the pile bottom reaches the designed penetration depth, and cutting off the pile body of the pile (2) exceeding the elevation of the operation plane (11) after pile sinking is finished;
slowly extending a core rod (3) of the micro-pile structure along the guide through hole, enabling a drilling end (31) of the core rod (3) to enter seabed bedrock through drilling and reach a designed penetration depth, and realizing anchoring of the micro-pile structure and the seabed through drilling;
after drilling is finished, the core rod (3) is sequentially anchored in seabed bedrock through the slurry (32), and drilling and grouting are repeated to form a plurality of micro-pile structures.
8. An implantable rock-socketed pile foundation construction method according to claim 7, characterized in that after the pile body of the casing pile (2) exceeding the elevation of the operation plane (11) is cut, grout (32) is poured into the circumferential joint (4) between the casing pile (2) and the main leg (12) and the gap (22) between the casing pile (2) and the guide pipe (21), respectively.
9. The construction method of an implanted rock-socketed pile foundation according to claim 8, characterized in that the grout (32) is injected into the gap between the core rod (3) and the seabed through the grouting through hole (315) along the grouting channel (314).
10. The method for constructing the implanted rock-socketed pile foundation according to claim 7, wherein the method for constructing the implanted rock-socketed pile foundation is applied to the implanted rock-socketed pile foundation of claim 1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005678A (en) * | 2023-03-24 | 2023-04-25 | 山东科技大学 | Marine rock-socketed single pile foundation construction excavation device and construction method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2700750A1 (en) * | 2012-07-27 | 2014-02-26 | RWE Power Aktiengesellschaft | Foundation pile for offshore structures and method for constructing a foundation pile for offshore structures |
| CN105297765A (en) * | 2015-10-30 | 2016-02-03 | 上海勘测设计研究院有限公司 | Offshore wind power plant draught fan combined-type rock-socketed pile foundation and construction method thereof |
| CN105604081A (en) * | 2016-02-29 | 2016-05-25 | 福建省水利水电勘测设计研究院 | Offshore wind turbine rock-socketed foundation suitable for batholithic seabed and construction method of offshore wind turbine rock-socketed foundation |
| CN105780806A (en) * | 2014-12-24 | 2016-07-20 | 广州华申建设工程管理有限公司 | Offshore wind turbine foundation for long-leg jacket of drilling piles and construction method of offshore wind turbine foundation |
| CN106759449A (en) * | 2017-03-30 | 2017-05-31 | 福建省水利水电勘测设计院（水利部福建水利水电勘测设计研究院） | A kind of embedding rock single-pile foundation of batholith sea bed offshore wind turbine and its construction method |
| CN210395414U (en) * | 2019-07-17 | 2020-04-24 | 国核电力规划设计研究院有限公司 | Shallow sea area transmission tower foundation |
| CN111172988A (en) * | 2020-01-20 | 2020-05-19 | 中交港湾（上海）科技有限公司 | Pile-first method jacket implanted rock-socketed pile rock-socketed section grouting pipe system |
| CN111593728A (en) * | 2020-06-05 | 2020-08-28 | 中交第三航务工程局有限公司 | Embedded rock-socketed pile 'pile-first method' interpolation type jacket foundation construction system |
| CN113293792A (en) * | 2021-05-31 | 2021-08-24 | 中国电建集团福建省电力勘测设计院有限公司 | Construction method of bored pile based on inclined pile in offshore wind power weathering soil layer |
| CN113431033A (en) * | 2021-06-04 | 2021-09-24 | 中交第三航务工程局有限公司江苏分公司 | Offshore implantable rock-socketed steel pipe pile bottom sealing construction method |
-
2022
- 2022-09-05 CN CN202211081355.9A patent/CN115262614A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2700750A1 (en) * | 2012-07-27 | 2014-02-26 | RWE Power Aktiengesellschaft | Foundation pile for offshore structures and method for constructing a foundation pile for offshore structures |
| CN105780806A (en) * | 2014-12-24 | 2016-07-20 | 广州华申建设工程管理有限公司 | Offshore wind turbine foundation for long-leg jacket of drilling piles and construction method of offshore wind turbine foundation |
| CN105297765A (en) * | 2015-10-30 | 2016-02-03 | 上海勘测设计研究院有限公司 | Offshore wind power plant draught fan combined-type rock-socketed pile foundation and construction method thereof |
| CN105604081A (en) * | 2016-02-29 | 2016-05-25 | 福建省水利水电勘测设计研究院 | Offshore wind turbine rock-socketed foundation suitable for batholithic seabed and construction method of offshore wind turbine rock-socketed foundation |
| CN106759449A (en) * | 2017-03-30 | 2017-05-31 | 福建省水利水电勘测设计院（水利部福建水利水电勘测设计研究院） | A kind of embedding rock single-pile foundation of batholith sea bed offshore wind turbine and its construction method |
| CN210395414U (en) * | 2019-07-17 | 2020-04-24 | 国核电力规划设计研究院有限公司 | Shallow sea area transmission tower foundation |
| CN111172988A (en) * | 2020-01-20 | 2020-05-19 | 中交港湾（上海）科技有限公司 | Pile-first method jacket implanted rock-socketed pile rock-socketed section grouting pipe system |
| CN111593728A (en) * | 2020-06-05 | 2020-08-28 | 中交第三航务工程局有限公司 | Embedded rock-socketed pile 'pile-first method' interpolation type jacket foundation construction system |
| CN113293792A (en) * | 2021-05-31 | 2021-08-24 | 中国电建集团福建省电力勘测设计院有限公司 | Construction method of bored pile based on inclined pile in offshore wind power weathering soil layer |
| CN113431033A (en) * | 2021-06-04 | 2021-09-24 | 中交第三航务工程局有限公司江苏分公司 | Offshore implantable rock-socketed steel pipe pile bottom sealing construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005678A (en) * | 2023-03-24 | 2023-04-25 | 山东科技大学 | Marine rock-socketed single pile foundation construction excavation device and construction method thereof |
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