CN205557528U - Set up offshore wind turbines foundation grouting bushing structure of annular - Google Patents
Set up offshore wind turbines foundation grouting bushing structure of annular Download PDFInfo
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- CN205557528U CN205557528U CN201620278073.1U CN201620278073U CN205557528U CN 205557528 U CN205557528 U CN 205557528U CN 201620278073 U CN201620278073 U CN 201620278073U CN 205557528 U CN205557528 U CN 205557528U
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- steel
- pipe pile
- sleeve
- offshore wind
- grouting
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Abstract
The utility model relates to a set up offshore wind turbines foundation grouting bushing structure of annular, including vertical steel -pipe pile and steel casing pipe, steel -pipe pile and the mutual coaxial nestification of steel casing pipe, steel -pipe pile and steel casing pipe form ring cavity between the adjacent pipe wall of nested end, a plurality of ring channels have all been offered with the steel casing pipe to the steel -pipe pile on lieing in ring cavity 's pipe wall, the ring cavity intussuseption is filled with and is used for steel -pipe pile and steel casing pipe bonding grout body as an organic whole. The utility model discloses being connected with tradition grout and comparing, the pipe wall surface smoothness is controllable, can improve and connect the resistance to compression bearing capacity, satisfies offshore wind turbines foundation grouting connection request, be connected with the grout that sets up shear key and compare, the utility model discloses simple manufacture, no welding residual stress and heat affected area, it is little to connect position stress concentration, and it can be good to connect the fatigue performance.
Description
Technical field
The utility model provides a kind of offshore wind farm crew base grouting sleeve attachment structure arranging annular groove, belongs to offshore wind turbine generator foundation structure field.
Background technology
Grouting sleeve connects and belongs to the overlap joint of two diameter difference pipes and connect, and is the grouting material such as ring-like intra-bladder instillation cement mortar formed between tube wall, shows that out-of-flatness produces mechanical snap and transmits axial compressive force by the bonding between tube wall and grouting body and steel pipe.Grouting sleeve connection has the advantages such as good integrity, easy construction and cost are low, is first used widely in offshore oil production platform structure.In recent years, grouting sleeve connection Wind turbines foundation structure the most at sea is applied.But, within 2009, detect that vertical sliding phenomenon occurs in grouting linkage section at Holland's Egmond marine wind electric field, cause the great attention of researcher and engineering circles.Norske Veritas's offshore wind turbine design specification DNV-OS-J101 the most also number easily its original text, it is recommended that welding shearing resistance is good for and is improved vertical bearing capacity in steel pipe walls.DNV-OS-J101 relevant regulations is also mainly used for reference in China's marine wind electric field design at present.But, relatively thick steel pipe pile lining welds shear key, welding difficulty is big, costly；Around weld seam, the most inevitably there is heat affected area, reduce the performance of tube wall；There is serious stress and concentrate in shearing-resistant member position, shearing-resistant member fatigue behaviour reduces；Also can there is serious stress and concentrate in the grouting body of shearing-resistant member annex, the fatigue behaviour of grouting body reduces.
Grouting sleeve linkage section shearing stress on contact surface under responsive to axial force exceedes cohesive force, produces and relatively slide between steel pipe and grouting material.The out-of-flatness of steel tube surface, can make to produce between tube wall and grouting body mutually extruding, thus produce tangential stress.Tangential stress size can represent by formula below:
Wherein,R TPFor outer tubing radius；t TPFor outer tube thickness；R pFor inner tube radius；t pInterior tube thickness；hFor grouting body thickness；E sFor steel pipe bullet mould；E gFor grouting bulk modulus；μFor coefficient of friction；δFor steel tube surface irregularity coefficient, for common rolled steel tubeδTypically it is taken as 0.07mm.
Use the grouting that connecting portion steel tube surface does not carries out any process to be connected to offshore oil production platform to apply for many years, in order.Contrast offshore oil production platform basis and offshore wind farm crew base it appeared that: 1) offshore wind farm crew base Pile Diameter is relatively big, maximum diameter of pile has reached 7.8m.2) offshore wind farm crew base pile foundation radius-thickness ratio is bigger.According to Europe 2007 before statistics, in offshore wind farm engineering use steel-pipe pile radius-thickness ratio be up to 100；The radius-thickness ratio of the steel-pipe pile used in offshore oil production platform basis is less than 40.3) offshore wind farm crew base grouting connecting length is less.Ocean platform grouting connection request connecting length is not less than 6 times of steel-pipe pile diameter；Offshore wind farm grouting connecting length is many at 1.5 ~ 2.5 times of steel-pipe pile diameters.According to formula (1), on the premise of other condition is constant, steel-pipe pile diameter and the increase of radius-thickness ratio, the tangential stress of connecting portion all can seriously reduce；It addition, connecting length reduces, the probability that steel pipe walls surface irregularity defect occurs also can reduce.It addition, along with the progress of Machining Technology, steel tube surface flatness defect also can reduce.To sum up described, the mechanical snap only produced by the out-of-flatness defect of steel tube surface resists the axial compressive force Shortcomings that the grouting of offshore wind farm crew base connects, and the Compressive Bearing Capacity improving connection by increasing the irregularity coefficient δ of steel tube surface is feasible.
Utility model content
The purpose of this utility model is for above weak point, it is provided that a kind of offshore wind farm crew base grouting sleeve attachment structure arranging annular groove.
The scheme that the utility model solution technical problem is used is a kind of offshore wind farm crew base grouting sleeve attachment structure arranging annular groove, including vertical steel-pipe pile and steel sleeve, described steel-pipe pile is the most coaxial with steel sleeve nested, described steel-pipe pile forms ring-like chamber with steel sleeve between the adjacent tube wall of nested end, if described steel-pipe pile and steel sleeve all offer arterial highway cannelure on the tube wall being positioned at ring-like chamber, in described ring-like chamber, it is filled with the grouting body for steel-pipe pile and steel sleeve being bonded as one.
Further, described steel sleeve coaxial sleeve is located at the outside of steel-pipe pile, forms ring-like chamber between outer wall and the inwall of steel sleeve of described steel-pipe pile, described cannelure on the steel-pipe pile outer wall be positioned at ring-like chamber with on steel sleeve inwall.
Further, the degree of depth of per pass cannelure is 8mm, and the spacing between two adjacent cannelures is 80mm.
Further, the cross sectional shape of described cannelure is arc.
Further, it is provided with grouting leak-proof device at the grouting mouth in described ring-like chamber.
Further, the inwall of described steel sleeve is provided with interim rest.
Further, the material of described grouting body is high-strength cement mortar.
Compared with prior art, compared with the utility model has the advantages that the utility model and conventional grout connect, tube wall surface flatness is controlled, can improve connection Compressive Bearing Capacity, meets offshore wind farm crew base grouting connection request；Compared with connecting with the grouting arranging shear key, the utility model makes simple, welding residual stress and heat affected area, and connecting portion stress collection is medium and small, connects fatigue behaviour good.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the utility model patent is further illustrated.
Fig. 1 is the structural representation of this utility model；
In figure:
1-steel-pipe pile；2-steel sleeve；The ring-like chamber of 3-；4-cannelure；The interim rest of 5-；6-is in the milk leak-proof device.
Detailed description of the invention
With detailed description of the invention, the utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of offshore wind farm crew base grouting sleeve attachment structure that annular groove is set, including vertical steel-pipe pile 1 and steel sleeve 2, described steel-pipe pile is the most coaxial with steel sleeve nested, described steel-pipe pile forms ring-like chamber 3 with steel sleeve between the adjacent tube wall of nested end, if described steel-pipe pile and steel sleeve all offer arterial highway cannelure 4 on the tube wall being positioned at ring-like chamber, in described ring-like chamber, it is filled with the grouting body for steel-pipe pile and steel sleeve being bonded as one.
In the present embodiment, described steel sleeve coaxial sleeve is located at the outside of steel-pipe pile, forms ring-like chamber between outer wall and the inwall of steel sleeve of described steel-pipe pile, described cannelure on the steel-pipe pile outer wall be positioned at ring-like chamber with on steel sleeve inwall.
In the present embodiment, the degree of depth of per pass cannelure is 8mm, and the spacing between two adjacent cannelures is 80mm.
In the present embodiment, the cross sectional shape of described cannelure is arc.
In the present embodiment, grouting leak-proof device 6 it is provided with at the grouting mouth in described ring-like chamber.
In the present embodiment, the inwall of described steel sleeve is provided with interim rest 5.
In the present embodiment, the material of described grouting body is high-strength cement mortar.
In the present embodiment, the method for attachment of the offshore wind farm crew base grouting sleeve attachment structure arranging annular groove comprises the following steps:
(1) first pour steel-pipe pile and steel sleeve, wherein offer cannelure at steel-pipe pile on the adjacent tube wall of steel sleeve nesting end；
(2) by the most coaxial to steel sleeve and steel-pipe pile nested, and the ring-like intra-bladder instillation high-strength cement mortar formed between the cannelure of two nested ends, and seal with grouting leak-proof device at grouting mouth, complete to connect.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; it is it should be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (7)
1. the offshore wind farm crew base grouting sleeve attachment structure that annular groove is set, it is characterized in that: include vertical steel-pipe pile and steel sleeve, described steel-pipe pile is the most coaxial with steel sleeve nested, described steel-pipe pile forms ring-like chamber with steel sleeve between the adjacent tube wall of nested end, if described steel-pipe pile and steel sleeve all offer arterial highway cannelure on the tube wall being positioned at ring-like chamber, in described ring-like chamber, it is filled with the grouting body for steel-pipe pile and steel sleeve being bonded as one.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 1, it is characterized in that: described steel sleeve coaxial sleeve is located at the outside of steel-pipe pile, form ring-like chamber between outer wall and the inwall of steel sleeve of described steel-pipe pile, described cannelure on the steel-pipe pile outer wall be positioned at ring-like chamber with on steel sleeve inwall.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 1, it is characterised in that: the degree of depth of per pass cannelure is 8mm, and the spacing between two adjacent cannelures is 80mm.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 1, it is characterised in that: the cross sectional shape of described cannelure is arc.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 1, it is characterised in that: it is provided with grouting leak-proof device at the grouting mouth in described ring-like chamber.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 2, it is characterised in that: the inwall of described steel sleeve is provided with interim rest.
The offshore wind farm crew base grouting sleeve attachment structure that annular groove is set the most according to claim 1, it is characterised in that: the material of described grouting body is high-strength cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620278073.1U CN205557528U (en) | 2016-04-06 | 2016-04-06 | Set up offshore wind turbines foundation grouting bushing structure of annular |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620278073.1U CN205557528U (en) | 2016-04-06 | 2016-04-06 | Set up offshore wind turbines foundation grouting bushing structure of annular |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205557528U true CN205557528U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620278073.1U Expired - Fee Related CN205557528U (en) | 2016-04-06 | 2016-04-06 | Set up offshore wind turbines foundation grouting bushing structure of annular |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205557528U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672320A (en) * | 2016-04-06 | 2016-06-15 | 福州大学 | Seaborne wind generation set foundation grouting sleeve connection structure provided with annular groove and connection method thereof |
| CN114199761A (en) * | 2021-12-23 | 2022-03-18 | 国网山东省电力公司临沂供电公司 | Be applied to high accuracy utensil of survey bonding sample intensity |
-
2016
- 2016-04-06 CN CN201620278073.1U patent/CN205557528U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672320A (en) * | 2016-04-06 | 2016-06-15 | 福州大学 | Seaborne wind generation set foundation grouting sleeve connection structure provided with annular groove and connection method thereof |
| CN114199761A (en) * | 2021-12-23 | 2022-03-18 | 国网山东省电力公司临沂供电公司 | Be applied to high accuracy utensil of survey bonding sample intensity |
| CN114199761B (en) * | 2021-12-23 | 2024-02-27 | 国网山东省电力公司临沂供电公司 | High-precision instrument applied to measuring strength of bonding sample |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |