CN207176723U - A kind of embedding rock single pile of offshore wind farm and its construction system - Google Patents

A kind of embedding rock single pile of offshore wind farm and its construction system Download PDF

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Publication number
CN207176723U
CN207176723U CN201721135004.6U CN201721135004U CN207176723U CN 207176723 U CN207176723 U CN 207176723U CN 201721135004 U CN201721135004 U CN 201721135004U CN 207176723 U CN207176723 U CN 207176723U
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China
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pile
wind farm
offshore wind
rock
casting
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CN201721135004.6U
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Inventor
张健翔
贾沼霖
袁新勇
张星波
王小合
郝利忠
王怀明
董孟永
奚乾蛟
逯鹏
孔德煌
张康
张清涛
余刚
赵辉
杨吉庆
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Huadian Heavy Industries Co Ltd
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Huadian Heavy Industries Co Ltd
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Abstract

The utility model discloses a kind of embedding rock single pile of offshore wind farm and its construction system, rock layer surface embedded by the embedding rock single pile of offshore wind farm includes pile body and stake holes covered with overburden layer, the embedding rock single pile of offshore wind farm;The stake holes is extended to inside rock stratum from earthing layer surface, and the stake holes diameter is more than the external footpath of the pile;The pile body is perfused with strong concrete or high strength grout in the annulus that open top end is formed between the stake holes, with the stake holes, the annulus.The embedding rock single pile of offshore wind farm provided by the utility model goes for institute's number shallow sea batholith sea bed geological state big absolutely at present, is neither limited by the upper overburden layer depth, is not also limited by embedded formation hardness;And the diameter of pile body may be configured as more than 6m;And the solid stake of grouting is easy to operate, reduces the difficulty of construction of the embedding rock single pile of offshore wind farm.

Description

A kind of embedding rock single pile of offshore wind farm and its construction system
Technical field
The utility model is related to offshore wind farm pile foundation technology field, more particularly to a kind of embedding rock single pile of offshore wind farm and its Construction system.
Background technology
The marine site of some complex geologic conditions, superficial layer are mostly overburden layer, and soil property is more soft, are built on these marine sites Wind Power Project pile foundation if only embedded overburden layer, be unable to reach support demand, thus, be built on these marine sites The pile foundation of Wind Power Project also need in the embedded rock stratum buried under overburden layer, embedded rock pile is formed, to meet offshore wind farm The support demand of project.
In view of rock stratum is mostly medium weathering or weak weathered state, compared to common soil layer, the property squeezed into is poor, thus prior art Middle conventional piling mode is very difficult to apply in the work progress of above-mentioned embedded rock pile, particularly with being adopted in current offshore wind farm project For single-pile foundation, often stake footpath is larger, and embedding rock operation is more difficult, causes the more difficult implementation of pile foundation construction, hinders sea The popularization and application of Wind Power Project.
In view of this, a kind of embedding rock single pile of offshore wind farm how is developed, makes it easy to implement, is that those skilled in the art need Technical problems to be solved.
Utility model content
To solve the above problems, the utility model provides a kind of embedding rock single pile of offshore wind farm, the embedding rock list of offshore wind farm Rock layer surface embedded by stake includes pile body and stake holes covered with overburden layer, the embedding rock single pile of offshore wind farm;The stake holes is covered certainly Soil layer surface is extended to inside rock stratum, and the stake holes diameter is more than the external footpath of the pile;The pile body is embedded in the stake The annulus of open top end is formed between hole, with the stake holes;Grouting is perfused with the annulus.
The embedding rock single pile of offshore wind farm provided by the utility model, the diameter of stake holes are more than the diameter of pile body, on the one hand may be used So that pile body can be smoothly embedded in the stake holes inside the rock stratum, realizes and pile body be embedded in inside rock stratum, without by The limitation of embedded formation hardness.
On the other hand the annulus that open top end is formed between pile body and stake holes can be made, this is opened so as to process Caving end irrigates grouting into the annulus, is easy to grouting operation, reduces the difficulty of construction of the embedding rock single pile of offshore wind farm, Also, restricted small to the diameter of pile body, the diameter of pile body may be configured as more than 6m, meet offshore wind farm single pile intensity need Ask.
The utility model also provides a kind of construction system of the embedding rock single pile of above-mentioned offshore wind farm, and the construction system includes:
Embedding rock platform, it is fixedly supported on the embedding rock platform support vessel for positioning of casting anchor;
Steel pile casting, the steel pile casting internal diameter are more than the external footpath of the pile;
Hanging apparatus and Combined vibrating hammer, the hanging apparatus slings the steel pile casting, and passes through the combined vibrating Steel pile casting described in dynamic hammer sinking, makes the steel pile casting extend to rock layer surface from sea;
Rig, it is seated on the steel pile casting or is fixed on embedding rock platform, bore operation is carried out, to form above-mentioned stake holes; The hanging apparatus enters the pile body sinking in the stake holes, to form above-mentioned annulus;
Device for casting, the perfusion grouting into it of the open top through the annulus, consolidates the pile body;It is described After pile body is firm, the Combined vibrating hammer and the hanging apparatus pull out the steel pile casting.
The construction system of the embedding rock single pile of offshore wind farm provided by the utility model, can be in most shallow sea batholith sea beds Upper construction forms the embedding rock single pile of above-mentioned offshore wind farm, is neither limited by the deep mixed geological state of overburden layer, also not by embedded Enter the geological state limitation that rock stratum hardness differs.
Alternatively, the construction system also includes embedding rock platform, and the embedding rock platform is formed with pilot hole, for being oriented to State the sinking direction of steel pile casting and the pile body.
Alternatively, the device for casting includes grouting conduit, and the grouting conduit is stretched into the steel pile casting, and described in warp The open top of annulus stretches to the annulus bottom, to irrigate the annulus to top the bottom of from.
Brief description of the drawings
Fig. 1 is the view after the completion of the embedding rock single pile construction of offshore wind farm provided by the utility model.
Fig. 2 is the view of insulating sea water in the embedding rock single pile work progress of offshore wind farm provided by the utility model;
Fig. 3 is the shape that drilling and sinking enter pile body in the embedding rock single pile work progress of offshore wind farm provided by the utility model State schematic diagram;
Fig. 4 is the view after being irrigated in the embedding rock single pile work progress of offshore wind farm provided by the utility model;
Fig. 5 is the part-structure schematic diagram of construction system provided by the utility model;
Fig. 6 is another part structural representation of construction system provided by the utility model.
Reference is as follows in Fig. 1-Fig. 6:11 pile bodies, 12 stake holes, 13 grouting, the upper overburden layers of A, B rock stratum, 21 steel shield Cylinder, 22 hanging apparatus, 23 Combined vibratings hammer, 24 device for casting, 25 embedding rock platforms.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings and have The utility model is described in further detail for body embodiment.
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings and have The utility model is described in further detail for body embodiment.
Fig. 1 is refer to, Fig. 1 is the state signal after the completion of the embedding rock single pile construction of offshore wind farm provided by the utility model Figure.
The embedding rock single pile of offshore wind farm provided by the utility model, as shown in figure 1, the embedding rock single pile of the offshore wind farm includes stake Cylinder 11 and stake holes 12.The pile body 11 is specifically as follows solid cylinder.The stake holes 12 extends to rock from overburden layer A surfaces Inside layer B, the diameter of stake holes 12 is more than the diameter of pile body 11.
The pile body 11 is embedded in the stake holes 12, and to the bottom surface of the extremely stake holes 12, its perisporium and the stake holes Top (diagram upper end) open annulus is formed between 12 perisporium, the top through the annulus is empty to the ring-type Interior perfusion grouting 13.It can also be high-strength grouting material that grouting 13, which is specifically as follows strong concrete,.
After the completion of perfusion, grouting 13 is surrounded on outside pile body 11, and from the bottom surface of stake holes 12 extend to rock stratum B surface it On, i.e., as shown in figure 1, grouting 13 is filled in the region that annulus is located inside the B of rock stratum, so as to reach the effect of firm pile body 11 Fruit.
Certainly, the perfusion of grouting 13 is also possible to overburden layer A surfaces, still, Comparatively speaking, setting as shown in Figure 1 Mode, more conducively save grouting 13.
As described above, the embedding rock single pile of offshore wind farm provided by the utility model, on the one hand, the stake holes inside the B of rock stratum The diameter of 12 (bottoms of stake holes 12) is more than the external diameter of pile body 11, so that pile body 11 can be smoothly embedded in inside the B of rock stratum Stake holes 12 in, realize and pile body 11 be embedded in inside the B of rock stratum, without being limited by embedded formation hardness;
On the other hand, the diameter of the stake holes 12 inside overburden layer A (top of stake holes 12) is outer also greater than pile body 11 Footpath, make the annulus that open top end is formed between pile body 11 and stake holes 12, so as to by the open top to described Perfusion grouting 13 in annulus, is easy to the operation of grouting 13, reduces the difficulty of construction of the embedding rock single pile of offshore wind farm, also, right The diameter of pile body 11 is restricted small, and the diameter of pile body 11 may be configured as more than 6m, meets offshore wind farm single pile strength demand.
The utility model also provides the construction system of the embedding rock single pile of above-mentioned offshore wind farm.
Fig. 1-Fig. 4 is refer to, Fig. 2 is insulating sea water in the embedding rock single pile work progress of offshore wind farm provided by the utility model View;Fig. 3 is that simultaneously sinking enters pile for drilling in the embedding rock single pile work progress of offshore wind farm provided by the utility model The view of body;Fig. 4 is that the state after being irrigated in the embedding rock single pile work progress of offshore wind farm provided by the utility model is shown It is intended to;Fig. 5 is the part-structure schematic diagram of construction system provided by the utility model;Fig. 6 is construction provided by the utility model Another part structural representation of system.
As shown in figure 5, the construction system includes embedding rock platform 25, the embedding rock platform 25 is fixedly supported to embedding rock platform On support vessel, specifically, can be fixed on by auxiliary pile on the support base of embedding rock platform support vessel, embedding rock platform support vessel is thrown Positioning of anchor.
The construction system also includes steel pile casting 21, specifically, the internal diameter of the steel pile casting 21 is more than the external diameter of pile body 11.
The construction system also includes hanging apparatus 22 and Combined vibrating hammer 23.Steel pile casting is sling using hanging apparatus 22 21, steel pile casting 21 is drowned into overburden layer A by self gravitation, then hammers 23 vibration steel pile castings 21 into shape by Combined vibrating, make its after Continue sinking to rock stratum B surface.After the completion of sinking, as shown in Fig. 2 the bottom of steel pile casting 21 is stable in overburden layer A, top is extended On sea, so as to form the insulating space isolated with seawater in it, in order to follow-up constructing operation.
The construction system also includes rig, and the rig is seated on steel pile casting 21 or embedding rock platform 25 and carries out drilling work Industry, and drill downwards to the B of rock stratum, to form above-mentioned stake holes 12;Specifically, the diameter of the stake holes 12 and the steel pile casting 21 internal diameter is consistent.After stake holes 12 is formed, above-mentioned hanging apparatus 22 slings the pile body 11, loosens suspension hook, enters its sinking In the stake holes 12, and sinking is to the bottom surface of the stake holes 12, now, as shown in figure 3, the perisporium of pile body 11 and stake holes 12 weeks The annulus of open top end is formed between wall.
The construction system also includes device for casting 24, the open top of the device for casting 24 through the annulus to Perfusion grouting 13 in it, as shown in figure 4, on the perfusion of grouting 13 to rock stratum B surface.
After the completion of perfusion, using steel pile casting 21 described in the vibration of combinations thereof formula vibration hammer 23, and above-mentioned hanging apparatus is utilized 22 pull out the steel pile casting 21, now, as shown in figure 1, vibrating soft overburden layer A by steel pile casting 21 covers above-mentioned ring-type sky Between top (diagram dotted line at), ultimately form the diagram embedding rock single pile of offshore wind farm.
The set-up mode of above-mentioned steel pile casting 21, while the insulating space isolated with seawater is formed, it can also stop and cover Soil layer A soil property flowing, the generation of collapse hole phenomenon when can both prevent from drilling, lifts operating efficiency, also allows for forming above-mentioned ring Shape space, subsequently to irrigate the implementation of operation.
The construction system of the embedding rock single pile of offshore wind farm provided by the utility model, can be in most shallow sea batholith sea beds Upper construction forms the embedding rock single pile of above-mentioned offshore wind farm, is neither limited by the deep mixed geological state of overburden layer, also not by embedded Enter the geological state limitation that rock stratum hardness differs.
Specifically, the embedding rock platform 25 is formed with pilot hole, when steel pile casting 21 described in sinking and the pile body 11, Both are made to extend through the pilot hole, so that both vertically sinkings.
More specifically, above-mentioned device for casting 24 also includes grouting conduit, and the grouting conduit is stretched into the steel pile casting 21, And the top through the annulus stretches to the annulus bottom, the grouting 13 is set to irrigate the ring-type bottom of to top Space.Under this setup, grouting conduit is isolated with seawater, and it is normal defeated can to evade grouting conduit wobble effects grouting 13 Send.
The embedding rock single pile of offshore wind farm provided by the utility model and its construction system are described in detail above.This Apply specific case in text to be set forth principle of the present utility model and embodiment, the explanation of above example is It is used to help understand method and its core concept of the present utility model.It should be pointed out that the ordinary skill people for the art For member, on the premise of the utility model principle is not departed from, some improvement and modification can also be carried out to the utility model, this A little improvement and modification are also fallen into the protection domain of the utility model claims.

Claims (4)

1. a kind of embedding rock single pile of offshore wind farm, it is characterised in that rock stratum (B) surface embedded by the embedding rock single pile of offshore wind farm covers There is overburden layer (A);The embedding rock single pile of offshore wind farm includes pile body (11) and stake holes (12);The stake holes (12) is from overburden layer (A) surface extends to rock stratum (B) inside, and the stake holes (12) diameter is more than pile body (11) external diameter;The pile body (11) embedded in the annulus that open top end is formed between the stake holes (12), with the stake holes (12);In the annulus It is perfused with grouting (13).
A kind of 2. construction system of the embedding rock single pile of offshore wind farm described in claim 1, it is characterised in that the construction system bag Include:
Embedding rock platform (25), is fixedly supported on the embedding rock platform support vessel for positioning of casting anchor;
Steel pile casting (21), steel pile casting (21) internal diameter are more than pile body (11) external diameter;
Hanging apparatus (22) and Combined vibrating hammer (23), hanging apparatus (22) lifting steel pile casting (21), described group Steel pile casting (21) described in combined type vibration hammer (23) sinking, makes the steel pile casting (21) extend to rock stratum (B) surface from sea;
Rig, it is seated on the steel pile casting (21) or is fixed on embedding rock platform (25), bore operation is carried out, to form above-mentioned stake Hole (12);The hanging apparatus (22) enters pile body (11) sinking in the stake holes (12), empty to form above-mentioned ring-type Between;
Device for casting (24), the perfusion grouting (13) into it of the open top through the annulus, makes the pile body (11) It is firm;After the pile body (11) is firm, the Combined vibrating hammers (23) and the hanging apparatus (22) into shape by the steel pile casting (21) pull out.
3. the construction system of the embedding rock single pile of offshore wind farm according to claim 2, it is characterised in that the embedding rock platform (25) formed with pilot hole, for being oriented to the sinking direction of the steel pile casting (21) and the pile body (11).
4. the construction system of the embedding rock single pile of offshore wind farm according to claim 2, it is characterised in that the device for casting (24) grouting conduit is included, the grouting conduit is stretched into the steel pile casting (21), and through the open top of the annulus The annulus bottom is stretched to, to irrigate the annulus to top the bottom of from.
CN201721135004.6U 2017-09-05 2017-09-05 A kind of embedding rock single pile of offshore wind farm and its construction system Active CN207176723U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501814A (en) * 2020-03-23 2020-08-07 河北工业大学 Offshore wind turbine composite foundation and foundation reinforcement construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501814A (en) * 2020-03-23 2020-08-07 河北工业大学 Offshore wind turbine composite foundation and foundation reinforcement construction method
CN111501814B (en) * 2020-03-23 2021-03-16 河北工业大学 Offshore wind turbine composite foundation and foundation reinforcement construction method

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