CN204370469U - A kind of drilled pile long leg jacket offshore wind turbine foundation - Google Patents

A kind of drilled pile long leg jacket offshore wind turbine foundation Download PDF

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Publication number
CN204370469U
CN204370469U CN201420828255.2U CN201420828255U CN204370469U CN 204370469 U CN204370469 U CN 204370469U CN 201420828255 U CN201420828255 U CN 201420828255U CN 204370469 U CN204370469 U CN 204370469U
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CN
China
Prior art keywords
long leg
pile
foundation
conduit
jacket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420828255.2U
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Chinese (zh)
Inventor
熊翱
潘晓亮
张锐
温文峰
尤毅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd
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GUANGZHOU HUASHEN ENGINEERING MANAGEMENT Co Ltd
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Priority to CN201420828255.2U priority Critical patent/CN204370469U/en
Application granted granted Critical
Publication of CN204370469U publication Critical patent/CN204370469U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of drilled pile long leg jacket offshore wind turbine foundation, comprise long leg jacket, be arranged at the interior hole drilling type foundation pile also extending embedding ground of the long leg conduit of long leg jacket.The utility model utilizes long leg jacket sinking to sit the end in seabed as locating guide device injection temporary support pile, then this is utilized to support long leg jacket as operation platform, hole in long leg conduit, carry out tunneling boring filling pile construction after pore-forming, or after pore-forming, hammering is implanted steel pipe pile and in foundation soil body and in long leg conduit, is implemented steel pipe pile be connected with the grouting of long leg conduit.It utilizes to be held concurrently operation platform by jacket at the bottom of the seat of temporary support, solve that construction period structure is fixed, stable problem and foundation pile location, guiding, clip pile problem; Be applicable to the thinner area that can not directly drive piles of covering layer, at sea have wide practical use in wind energy project.

Description

A kind of drilled pile long leg jacket offshore wind turbine foundation
Technical field
The utility model belongs to the technical field on ocean engineering basis, is specifically related to a kind of drilled pile long leg jacket offshore wind turbine foundation.
Background technology
Marine engineering is because at sea constructing, and operating mode is comparatively severe, have can the engineering time short, difficulty of construction is large, by features such as the effect of natural conditions such as weather sea situation are huge.
At present, in the structure types on ocean engineering basis, jacket is the most frequently used foundation structure form, and it is steel structure truss, and its integral rigidity is large, and batch production degree is high, little by wave force, and malformation is little, is applicable to the marine site of the various depth of water.But more shallow at covering layer, the sea area that can not directly drive piles, directly need implement castinplace pile or socketed pile or other types piling strtucture in the conduit of jacket.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present utility model be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding content of the present utility model better.
Summary of the invention
The purpose of this utility model is avoid deficiency of the prior art and provide a kind of drilled pile long leg jacket offshore wind turbine foundation, compared with common conduit shelf structure, it utilizes and is done operation platform by jacket is double at the bottom of the seat of temporary support, solve that construction period structure is fixed, stable problem and foundation pile location, guiding, clip pile problem; In addition, by implementing tunneling boring castinplace pile after prebored hole in long leg conduit, or after hammering implant steel pipe pile and in foundation soil body, in long leg conduit, implement the grouting of foundation pile and long leg conduit again or increase pouring reinforcement concrete and be connected, make long leg jacket structure be applicable to the more shallow area that can not directly drive piles of bearing stratum buried depth.
The purpose of this utility model is achieved through the following technical solutions: provide a kind of drilled pile long leg jacket offshore wind turbine foundation, comprise long leg jacket 11 and boring foundation pile 18, interior also extension of long leg conduit 12 that described boring foundation pile 18 is arranged at long leg jacket 11 embeds ground.
Wherein, described long leg jacket 11 is integral type steel truss structure, comprise long leg conduit 12, tower barrel base ring base 13, horizon bar 14, stiffener 20, hound 15, the steel box-girder 16 connecting long leg conduit 12 and tower barrel base ring base 13 and temporary support ring 17, described tower barrel base ring base 13 is provided with the discharge ring 19 be connected with blower fan tower barrel.
Wherein, described temporary support ring 17 is steel cylinder, and it is arranged at long leg conduit 12 outer upper end and adopts bolt type to be fixedly connected with long leg conduit 12.
Wherein, the lower end of described long leg conduit 12 enters the following certain depth in mud face.
Wherein, described stiffener 20 is leg-of-mutton steel plate, and it connects the bottom surface of undermost horizon bar 14 and the long leg conduit 12 crossing with it.
Wherein, described boring foundation pile 18 is bored pile foundation pile.
Wherein, described boring foundation pile 18 implants steel pipe pile for boring hammering, and the external diameter of this steel pipe pile foundation pile 18 is less than the internal diameter of long leg conduit 12 but is a bit larger tham bore diameter, its top can lower than/flush/stretch out long leg conduit (12) top.
Wherein, pile body and the long leg conduit 12 of described boring foundation pile 18 partly overlap.The annulus of its overlapping interval is fixedly connected with by grouting, also can increase pouring reinforcement concrete 23 in boring foundation pile 18 with long leg conduit 12.
The beneficial effects of the utility model: utilize the interim supporting pile of first constructing as temporary support system, utilize long leg jacket as operation platform, the long leg conduit buried is utilized to do temporary support leg and temporary steel casing, hole in long leg conduit, tunneling boring castinplace pile is implemented after pore-forming, or after pore-forming, hammering is implanted steel pipe pile and is implemented steel pipe pile be connected with the grouting of long leg conduit in foundation soil body and in long leg conduit, also can increase pouring reinforcement concrete with enhancing connection between the two in long leg conduit and steel pipe pile.It utilizes and is done operation platform by jacket is double at the bottom of the seat of temporary support, solve that construction period structure is fixed, stable problem and foundation pile location, guiding, clip pile problem; Be applicable to the more shallow area that can not directly drive piles of bearing stratum buried depth, be at sea with a wide range of applications in wind energy project.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the vertical exhibition opening structure schematic diagram (drill-pouring pile-type) of drilled pile long leg jacket offshore wind turbine foundation.
Fig. 2 is the vertical exhibition opening structure schematic diagram (steel pipe pile-type is implanted in boring hammering) of drilled pile long leg jacket offshore wind turbine foundation.
Fig. 3 is A-A schematic cross-section in Fig. 2.
Fig. 4 is the schematic diagram of pouring reinforcement concrete 23 in foundation pile 18 with long leg conduit 12.
Detailed description of the invention
The technical solution of the utility model is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Core of the present utility model is to provide a kind of drilled pile long leg jacket offshore wind turbine foundation, it utilizes the interim supporting pile of first constructing as temporary support system, utilize long leg jacket as operation platform, the long leg conduit buried is utilized to do temporary support leg and temporary steel casing, hole in long leg conduit, tunneling boring castinplace pile is implemented after pore-forming, or hammering is implanted steel pipe pile and is implemented steel pipe pile be connected with the grouting of long leg conduit in foundation soil body and in long leg conduit after pore-forming, also can increase pouring reinforcement concrete to strengthen connection between the two in long leg conduit and steel pipe pile.It utilizes and is done operation platform by jacket is double at the bottom of the seat of temporary support, solve that construction period structure is fixed, stable problem and foundation pile location, guiding, clip pile problem; Be particularly suitable for the more shallow area that can not directly drive piles of bearing stratum buried depth, overall economics is good.
As shown in figures 1-4, the drilled pile long leg jacket offshore wind turbine foundation that the utility model embodiment provides, comprise long leg jacket 11 and boring foundation pile 18, interior also extension of long leg conduit 12 that described boring foundation pile 18 is arranged at long leg jacket 11 embeds ground, and the structure model selection of hole drilling type foundation pile 18 should meet designing requirement and execution conditions.
As preferred embodiment, described long leg jacket 11 is integral type steel truss structure, its integral level cross section can be three limits and above polygon, be made up of long leg conduit 12, tower barrel base ring base 13, horizon bar 14, stiffener 20, hound 15, the steel box-girder 16 connecting long leg conduit 12 and tower barrel base ring base 13 and temporary support ring 17, tower barrel base ring base 13 be provided with the discharge ring 19 be connected with blower fan tower barrel.
As preferred embodiment, described temporary support ring 17 is steel cylinder, has certain Rigidity and strength, and only use in the construction period, it is arranged at long leg conduit 12 outer upper end and adopts bolt type to be fixedly connected with long leg conduit 12.
As preferred embodiment, the following certain depth in mud face is stretched in the lower end of described long leg conduit 12, doubles as the casing into prebored hole, meet the needs of holing in advance in long leg conduit 12 as temporary support.
As preferred embodiment, described stiffener 20 is leg-of-mutton steel plate, and it connects the bottom surface of undermost horizon bar 14 and the long leg conduit 12 crossing with it.Strengthen steel plate 20 and can guarantee that long leg jacket 11 hypomere strength and stiffness when lifting sinking and burying meet the demands.Certainly, if be necessary, long leg jacket also can arrange mud mat.
As preferred embodiment, one of described foundation pile 18 type is bored pile foundation pile.
As preferred embodiment, two of described foundation pile 18 type is the stake of boring hammering implantable steel tube, and steel pipe pile foundation pile 18 can go deep into seabed mud layer by long leg conduit 12 smoothly, and leaves the needs that a fixed gap meets grouting connection between.And the top of long leg conduit 12 should exceed working water level.Meanwhile, when utilizing long leg conduit 12 to hole as casing, drilling diameter need be slightly less than the external diameter of foundation pile 18, makes the foundation pile 18 in embedded hole firmly be embedded in foundation soil body.Foundation pile 18 top can flush/stretch out long leg conduit 12 top, also can Pile feeder be utilized to be sunk to the bottom of long leg conduit 12 when pile sinking, to save steel.The stake of boring hammering implantable steel tube can overcome foundation pile diameter and to suddenly change the problem of stress concentration brought.
As preferred embodiment, pile body and the long leg conduit 12 of described boring foundation pile 18 partly overlap, the annulus grouting of its overlapping interval connects, after the water drained in long leg conduit 12 checks mortar 22 qualified, also can increase pouring reinforcement concrete 23 in boring foundation pile 18 with long leg conduit 12 simultaneously, strengthen boring foundation pile 18 and be connected with long leg conduit 12.This method can dry method grouting effect, grouting connect quality can ensure.Certainly, in order to increase the adhesion stress of grouting or perfusion concrete and tube wall, shear connector need be preset on the tube wall of correspondence.
In order to implement drilled pile long leg jacket offshore wind turbine foundation as shown in Figures 1 to 4, the utility model embodiment still provides a kind of construction method, comprises the steps:
S1, making long leg jacket 11, supporting pile 21, or steel pipe pile foundation pile 18;
S2, utilize marine crane gear to hang in predetermined maritime area by long leg jacket 11, utilize the deadweight of structure to make long leg conduit 12 lower end of long leg jacket 11 sink to the following certain depth in mud face, and make the planeness that long leg jacket 11 keeps suitable;
S3, utilize temporary support ring 17 as location and guiding device, carry out the piling construction of supporting pile 21 with vibrating hammer, make its bearing capacity meet predetermined requirement, leveling long leg jacket 11, and supporting pile 21 and temporary support ring 17 temporary weld are fixed;
S4, do operation platform with long leg jacket 11 and to after the suitable temporary protection of corrosion-inhibiting coating, boring casing is done with long leg conduit 12, foundation pile drilling construction is carried out in long leg conduit 12, aperture should be slightly less than the internal diameter of long leg conduit 12, hole depth reaches the following certain depth of ground bedrock surface, meets the requirement for bearing capacity of predetermined pile-type;
S5, to boring foundation pile 18 construct;
S6, cutting temporary support ring 17 are connected with interim between supporting pile 21, and supporting pile 21 is removed in pile pulling;
S7, turn on bolt between temporary support ring 17 and long leg conduit 12, take temporary support ring 17 away;
S8, on discharge ring 19, blower fan tower barrel is installed.
As preferred embodiment, in described step S5, boring foundation pile 18 adopts construction reinforced concrete filling pile, should reach designing requirement in hole clearly before filling pile construction.
As preferred embodiment, in described step S5, boring foundation pile 18 adopts the stake of hammering implantable steel tube; Concrete, utilize pile driving equipment to carry out the piling construction of steel pipe pile foundation pile 18 in long leg conduit 12 inside, make boring foundation pile 18 embed in the hole of preboring, its bottom sinks at the bottom of the hole of preboring, and top reaches default absolute altitude; Perfusion mortar 22 in the annular space that boring foundation pile 18 and long leg conduit 12 are formed, whether the water inspection mortar 22 drained in long leg conduit 12 is qualified, and final realization boring foundation pile 18 is fixedly connected with long leg conduit 12; Also can increase pouring reinforcement concrete 23 in boring foundation pile 18 with long leg conduit 12, to strengthen the connection of foundation pile 18 and long leg conduit 12.
A lot of detail has been set forth so that fully understand the utility model in description above; but; the utility model can also adopt other to be different from other similar fashion described here and implement, and therefore, can not be interpreted as the restriction to the utility model protection domain.
In a word; although the utility model illustrates above-mentioned preferred embodiment; but should illustrate; although those skilled in the art can carry out various change and remodeling; unless such change and remodeling substantially deviate from scope of the present utility model, otherwise all should be included in protection domain of the present utility model.

Claims (8)

1. a drilled pile long leg jacket offshore wind turbine foundation, is characterized in that: comprise long leg jacket (11) and boring foundation pile (18), and interior also extension of long leg conduit (12) that described boring foundation pile (18) is arranged at long leg jacket (11) embeds ground.
2. drilled pile long leg jacket offshore wind turbine foundation according to claim 1, it is characterized in that: described long leg jacket (11) is integral type steel truss structure, comprise long leg conduit (12), tower barrel base ring base (13), horizon bar (14), stiffener (20), hound (15), the steel box-girder (16) connecting long leg conduit (12) and tower barrel base ring base (13) and temporary support ring (17), described tower barrel base ring base (13) is provided with the discharge ring (19) be connected with blower fan tower barrel.
3. drilled pile long leg jacket offshore wind turbine foundation according to claim 2, it is characterized in that: described temporary support ring (17) is steel cylinder, it is arranged at long leg conduit (12) outer upper end and adopts bolt type to be fixedly connected with long leg conduit (12).
4. drilled pile long leg jacket offshore wind turbine foundation according to claim 1 and 2, is characterized in that: the lower end of described long leg conduit (12) enters the following certain depth in mud face.
5. drilled pile long leg jacket offshore wind turbine foundation according to claim 2, is characterized in that: described stiffener (20) is leg-of-mutton steel plate, it connects the bottom surface of undermost horizon bar (14) and the long leg conduit (12) crossing with it.
6. drilled pile long leg jacket offshore wind turbine foundation according to claim 1, is characterized in that: described boring foundation pile (18) is bored pile foundation pile.
7. drilled pile long leg jacket offshore wind turbine foundation according to claim 1 and 2, it is characterized in that: described boring foundation pile (18) is boring hammering implantation steel pipe pile, the external diameter of this steel pipe pile foundation pile (18) is less than the internal diameter of long leg conduit (12) but is a bit larger tham bore diameter, its top can lower than/flush/stretch out long leg conduit (12) top.
8. the drilled pile long leg jacket offshore wind turbine foundation according to claim 1 or 2 or 7, is characterized in that: pile body and the long leg conduit (12) of described boring foundation pile (18) partly overlap; The annulus of its overlapping interval is fixedly connected with by grouting, also can increase pouring reinforcement concrete (23) in boring foundation pile (18) with long leg conduit (12).
CN201420828255.2U 2014-12-24 2014-12-24 A kind of drilled pile long leg jacket offshore wind turbine foundation Expired - Fee Related CN204370469U (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105369820A (en) * 2015-12-02 2016-03-02 同济大学 Prefabricated steel structure fan base
CN106049524A (en) * 2016-07-27 2016-10-26 天津大学前沿技术研究院有限公司 Composite cylinder type foundation with auxiliary piles added in later period
CN106320366A (en) * 2016-09-23 2017-01-11 中交第三航务工程局有限公司宁波分公司 Construction method for foundation of ocean tidal current energy generator set
CN108505941A (en) * 2018-03-07 2018-09-07 江苏龙源振华海洋工程有限公司 A kind of offshore wind farm drill hole of drilling machine construction technology
CN110512609A (en) * 2019-08-16 2019-11-29 南通振华重型装备制造有限公司 A kind of novel jackstone systematic conduit frame and its building technology

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105369820A (en) * 2015-12-02 2016-03-02 同济大学 Prefabricated steel structure fan base
CN106049524A (en) * 2016-07-27 2016-10-26 天津大学前沿技术研究院有限公司 Composite cylinder type foundation with auxiliary piles added in later period
CN106320366A (en) * 2016-09-23 2017-01-11 中交第三航务工程局有限公司宁波分公司 Construction method for foundation of ocean tidal current energy generator set
CN106320366B (en) * 2016-09-23 2019-04-02 中交第三航务工程局有限公司宁波分公司 The construction method on Ocean Tidal Current Energy generating set basis
CN108505941A (en) * 2018-03-07 2018-09-07 江苏龙源振华海洋工程有限公司 A kind of offshore wind farm drill hole of drilling machine construction technology
CN110512609A (en) * 2019-08-16 2019-11-29 南通振华重型装备制造有限公司 A kind of novel jackstone systematic conduit frame and its building technology
CN110512609B (en) * 2019-08-16 2021-05-28 南通振华重型装备制造有限公司 Riprap system jacket and construction process thereof

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20150603

Termination date: 20171224