CN107339200A - Stainless steel concrete composite pillar for marine environment - Google Patents
Stainless steel concrete composite pillar for marine environment Download PDFInfo
- Publication number
- CN107339200A CN107339200A CN201710729628.9A CN201710729628A CN107339200A CN 107339200 A CN107339200 A CN 107339200A CN 201710729628 A CN201710729628 A CN 201710729628A CN 107339200 A CN107339200 A CN 107339200A
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- CN
- China
- Prior art keywords
- stainless steel
- concrete
- marine environment
- steel tube
- support plate
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of stainless steel concrete composite pillar for marine environment, including a core concrete post, a stainless steel tube and a stainless steel substrates.It compared to the component of existing marine windmill supporting construction, can effectively alleviate the vortex-induced vibration in ocean, there is economic and corrosion resistant advantage.
Description
Technical field
The invention belongs to offshore wind energy plant technology beam space, and in particular to a kind of stainless steel reinforced concrete for marine environment
Coagulate native composite pillar.
Background technology
Wind energy is just increasingly paid attention to as a kind of regenerative resource of cleaning by countries in the world.Nearly ten years, it is global
Annual installed capacity of wind-driven power rate of rise is 20%-30%, and world's wind-powered electricity generation is just developed with swift and violent speed.Guided in national policy
Under, China's Oversea wind power generation is also widely used and developed, and total installation of generating capacity has ranked first in the world.Sea turn at present
Power machine is mostly deployed in the nearer shallow sea water of bank off sea.But the supporting construction of most of marine windmill will be chronically at badly
Marine environment in, bear the sea of complexity, wave, stream etc. act on.The long-term period effects of these load and the coupling between them
Effect is closed, the vibration of structure can be caused so as to reduce the fatigue life of structure, in some instances it may even be possible to cause sea turn motor significantly
Motion directly results in structure destruction, can bring serious threat to the safe and reliable operation of wind energy conversion system and be paid close attention to, it is necessary to give.
Vortex-induced vibration is the principal element that sea turn motor structural fatigue destroys all the time, and extra large for a long time
One of the problem of challenge being had much in foreign engineering.With the increase of the depth of water, it is tight that the vortex-induced vibration problem of structure becomes more acute
Causing wind energy conversion system unstability, collapsing for weight, causes heavy losses.
The content of the invention
It is an object of the invention to overcome prior art defect, there is provided a kind of stainless steel concrete for marine environment is answered
Close column.
The concrete technical scheme of the present invention is as follows：
For the stainless steel concrete composite pillar of marine environment, including a core concrete post, a stainless steel tube and one
Stainless steel substrates；
Core concrete post filling is adapted in stainless steel tube, makes core concrete post by stainless steel tube operative constraint,
The bearing capacity ability of core concrete is improved, while stainless steel tube is supported by core concrete post, prevents stainless steel
Indent yield failure occurs for pipe, improves the stability bearing capacity of stainless steel tube；The intensity of concrete in above-mentioned core concrete post
Grade is C30~C40, the model 304 of stainless steel；；
Stainless steel substrates are paperwrapped in the outside wall surface of stainless steel tube effectively to alleviate the vortex-induced vibration in marine environment in the shape of a spiral,
Above-mentioned spiral helicine design parameter is as follows：Pitch takes 5~17.5D, and spiral shell a height of 0.15D~0.25D, wherein D represent stainless steel tube
External diameter.
In a preferred embodiment of the invention, a shaped steel is embedded with the core concrete post, used in shaped steel
The model of steel is preferably Q235.
It is further preferred that the cross section of the shaped steel is Y shape.
It is further preferred that the shaped steel includes identical first support plate of size, the second support plate and the 3rd support plate, this first
Plate, the second support plate and the 3rd support plate are formed the cross section of the Y shape of shaped steel with 120 degree of angle two-by-two.
In a preferred embodiment of the invention, the cross section of the core concrete post be shaped as it is circular, ellipse
Circular or polygon.
The beneficial effects of the invention are as follows：
1st, the present invention includes a core concrete post, a stainless steel tube and a stainless steel substrates, compared to existing Oversea wind
It the component of machine supporting construction, can effectively alleviate the vortex-induced vibration in ocean, there is economic and corrosion resistant advantage.
2nd, there is a shaped steel in core concrete post of the invention, possesses carrying compared to traditional reinforced concrete structure
The advantages of power is big, rigidity is big and anti-seismic performance is good；Compared with steel construction, have structure partial, resistance to overturning good and save steel
The advantages of material.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the cross-sectional view of the embodiment of the present invention 1.
Fig. 3 is the structural representation of the embodiment of the present invention 2.
Fig. 4 is the cross-sectional view of the embodiment of the present invention 2.
Fig. 5 is one of design sketch of Example 1 and Example 2 of the present invention.
Fig. 6 is the two of the design sketch of Example 1 and Example 2 of the present invention.
Fig. 7 is the three of the design sketch of Example 1 and Example 2 of the present invention.
Fig. 8 is the quality of stainless reinforcing bar and regular reinforcement in salt spray corrosion test in Example 1 and Example 2 of the present invention
The comparison diagram of loss late.
Embodiment
Technical scheme is further detailed and described below by way of embodiment combination accompanying drawing.
Embodiment 1
As illustrated in fig. 1 and 2, a kind of stainless steel concrete composite pillar for marine environment, including a core concrete
Post 1 (conveniently of circular shape, the oval or polygon of cross section), a stainless steel tube 2 and a stainless steel substrates 3；
The core concrete post 1 filling is adapted in stainless steel tube 2, makes core concrete post 1 effective about by stainless steel tube 2
Beam, improves the bearing capacity ability of core concrete post 1, while stainless steel tube 2 is supported by core concrete post 1, prevents
Only indent yield failure occurs for stainless steel tube 2, improves the stability bearing capacity of stainless steel tube 2, wherein stainless steel model 304；
Stainless steel substrates 3 are paperwrapped in the outside wall surface of stainless steel tube 2 effectively to alleviate the whirlpool in marine environment in 45 degree of helical forms
Excited vibration, pitch take 5~17.5D, and spiral shell a height of 0.15D~0.25D, wherein D represent the external diameter of stainless steel tube, while stainless steel substrates
3 the advantages that possessing corrosion-resistant, high intensity and being not easy corrosion, so as to improve the life-span of structure.
The preparation method of the present invention is as follows：
(1) material prepares：Stainless steel tube is cut to design length, as stainless steel tube 2.The outer surface of stainless steel tube 2
Decontamination and smooth processing are carried out using compressed-air blast cleaning with inner surface.
(2) helical form stainless steel substrates weld：Helical form stainless steel substrates 3 are welded in the outer surface of stainless steel tube 2, so as to be formed
Multiple tube.
(3) concreting：Mixing concrete is matched by design so that strength grade of concrete is between C30-C40,
Water reducer and mineral additive can be suitably filled, to improve the anti-corrosion capability of multiple tube.Upright multiple tube, concrete is inserted
The inner side of stainless steel tube 2, and abundant vibration compacting, so as to form core concrete post 1.
(4) concrete curing：It will make by shaped steel Core Steel Reinforced Concrete 1, stainless steel tube 2 and stainless steel substrates 3
The composite component of composition carries out maintenance processing according to concrete related specifications.
Embodiment 2
As shown in Figures 3 and 4, a kind of stainless steel concrete composite pillar for marine environment, including a core concrete
Post 1 (conveniently of circular shape, the oval or polygon of cross section), a stainless steel tube 2 and a stainless steel substrates 3；
The core concrete post 1 filling is adapted in stainless steel tube 2, Core Steel Reinforced Concrete 1 is had by stainless steel tube 2
Effect constraint, improves the bearing capacity ability of Core Steel Reinforced Concrete 1, while stainless steel tube 2 is coagulated by core type steel reinforced concrete
Earth pillar 1 supports, and prevents stainless steel tube 2 from indent yield failure occurs, and improves the stability bearing capacity of stainless steel tube 2；
Stainless steel substrates 3 are paperwrapped in the outside wall surface of stainless steel tube 2 effectively to alleviate the whirlpool in marine environment in 45 degree of helical forms
Excited vibration, while the advantages that stainless steel substrates 3 possess corrosion-resistant, high intensity and are not easy corrosion, so as to improve the life-span of structure.
Core concrete post 1 include concrete column body 10 and be embedded in cross section therein be Y shape shaped steel 11 it is (used
The model of steel is preferably Q235).Specifically, the shaped steel 11 includes identical first support plate 111 of size, the and of the second support plate 112
3rd support plate 113, first support plate 111, the second support plate 112 and the 3rd support plate 113 are formed shaped steel 11 with 120 degree of angle two-by-two
Y shape cross section.
The preparation method of the present invention is as follows：
(1) material prepares：Stainless steel tube is cut to design length, as stainless steel tube 2.The outer surface of stainless steel tube 2
Decontamination and smooth processing are carried out using compressed-air blast cleaning respectively with inner surface.
(2) helical form stainless steel substrates weld：Helical form stainless steel substrates 3 are welded in the outer surface of stainless steel tube 2, so as to be formed
Multiple tube.
(3) shaped steel welds：First support plate 111, the second support plate 112 and the 3rd support plate 113 are welded with 120 degree of angle two-by-two
Form the cross section of the Y shape of shaped steel 11.
(4) concreting：Shaped steel 11 is uprightly fixed, overcoat multiple tube.Mixing concrete is matched by design so that coagulation
Native strength grade is between C30-C40, can suitably fill water reducer and mineral additive, to improve the anticorrosion energy of multiple tube
Power.Concrete is inserted between shaped steel 11 and stainless steel tube 2, and abundant vibration compacting, so as to form core concrete post 1.
(5) concrete curing：It will make and be made up of shaped steel core concrete post 1, stainless steel tube 2 and stainless steel substrates 3
Composite component carry out maintenance processing according to concrete related specifications.
By composite pillar made from above-described embodiment 1 and embodiment 2 and be not added with stainless steel substrates 3 have smooth surface
Column is contrasted, as shown in figure 5, smooth column and the Fourier transformation (FFT) of the composite pillar lift coefficient of the present invention can
To draw, the presence of the spiral helicine structure of stainless steel substrates 3 thoroughly destroys the frequency of releasing of flow field trailing vortex, also changes mould of releasing
Formula.What periodic vortex shedding became originally has no rule, either no longer provides or the cycle is infinitely great, explain well
The whirlpool of helical structure column tail flow field, which is swashed, to be suppressed.
By composite pillar made from above-described embodiment 1 and embodiment 2 and be not added with spiral stainless steel substrates 3 have smooth table
The column in face is contrasted.Fig. 6 and Fig. 7 is to choose difference of the three-dimensional wake field along XOZ planes to open up to opening position Vorticity Field cloud atlas,
The effect suppressed is swashed to whirlpool than smooth surface column with the composite pillar of the explanation present invention.For smooth column flow field such as Fig. 6
It is shown, at column trailing edge produce whirlpool be close to tube wall, different cross section tail flow field vortex shedding is more violent, but present it is each open up to cut
Face similar characteristic.The flow field of the present invention is as shown in fig. 7, vortex shedding substantially relaxes.Embody compound vertical with helical structure
Post has the advantage of omni-directional in the ocean current of deep-sea.Actual sea of isotropic satisfactory texture feature more suitable for complicated ocean current
In condition.
Fig. 8 is the contrast of the mass loss rate of stainless reinforcing bar and regular reinforcement in salt spray corrosion test, as seen from Figure 8,
In salt air corrosion environment, the corrosion regularity of various reinforcing bars is identical, and corrosion amount (mass loss rate) is with the increasing of etching time
Adding and linearly increasing, is compared with regular reinforcement for corrosion rate approximately constant value, and stainless steel bar corrosion is extremely slow,
The corrosion resistance of 00Cr23Ni4N (2304) stainless reinforcing bar is approximately 100 times of HRB335 regular reinforcements, and stainless reinforcement ratio is common
Reinforcing bar has more excellent salt fog resistance corrosive power.
Table 1 for different shaped steel corrosion rate of the steel when 3 times of concentrated seawaters soaks, as seen from table, Q235 and
HRB400 corrosion rate is very close, but is all significantly larger than stainless steel.
Table 1
The foregoing is only a preferred embodiment of the present invention, therefore can not limit the scope that the present invention is implemented according to this, i.e.,
The equivalent changes and modifications made according to the scope of the claims of the present invention and description, all should still it belong in the range of the present invention covers.
Claims (5)
1. the stainless steel concrete composite pillar for marine environment, it is characterised in that：Including a core concrete post, one stainless
Steel pipe and a stainless steel substrates；
Core concrete post filling is adapted in stainless steel tube, makes core concrete post by stainless steel tube operative constraint, raising
The bearing capacity ability of core concrete, while stainless steel tube is supported by core concrete post, prevent stainless steel tube from sending out
Raw indent yield failure, improve the stability bearing capacity of stainless steel tube；The strength grade of concrete in above-mentioned core concrete post
For C30~C40, the model 304 of stainless steel；
Stainless steel substrates are paperwrapped in the outside wall surface of stainless steel tube to alleviate the vortex-induced vibration in marine environment, above-mentioned spiral in the shape of a spiral
The design parameter of shape is as follows：Pitch takes 5~17.5D, and spiral shell a height of 0.15D~0.25D, wherein D represent the external diameter of stainless steel tube.
2. it is used for the stainless steel concrete composite pillar of marine environment as claimed in claim 1, it is characterised in that：The core
A shaped steel is embedded with concrete column.
3. it is used for the stainless steel concrete composite pillar of marine environment as claimed in claim 2, it is characterised in that：The shaped steel
Cross section be Y shape.
4. it is used for the stainless steel concrete composite pillar of marine environment as claimed in claim 3, it is characterised in that：The shaped steel
Including identical first support plate of size, the second support plate and the 3rd support plate, first support plate, the second support plate and the 3rd support plate are with 120 degree
Angle two-by-two form shaped steel Y shape cross section.
5. it is used for the stainless steel concrete composite pillar of marine environment as claimed in claim 1, it is characterised in that：The core
Being shaped as the cross section of concrete column is circular, oval or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729628.9A CN107339200A (en) | 2017-08-23 | 2017-08-23 | Stainless steel concrete composite pillar for marine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729628.9A CN107339200A (en) | 2017-08-23 | 2017-08-23 | Stainless steel concrete composite pillar for marine environment |
Publications (1)
| Publication Number | Publication Date |
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| CN107339200A true CN107339200A (en) | 2017-11-10 |
Family
ID=60214066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710729628.9A Pending CN107339200A (en) | 2017-08-23 | 2017-08-23 | Stainless steel concrete composite pillar for marine environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814852A (en) * | 2021-01-07 | 2021-05-18 | 上海电气风电集团股份有限公司 | Spiral upright post floating type fan foundation and fan system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN101968139A (en) * | 2009-11-13 | 2011-02-09 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN102121356A (en) * | 2011-01-12 | 2011-07-13 | 中国海洋石油总公司 | Helical strake vortex induced vibration inhibiting device |
| CN203034686U (en) * | 2012-11-27 | 2013-07-03 | 方泰建设集团有限公司 | Stiff core concrete-filled steel tube column internally inserted with Y-shaped steel plate |
| KR20150052486A (en) * | 2013-11-06 | 2015-05-14 | 대우조선해양 주식회사 | Apparatus for damping and generating vortex induced vibration of ocean riser, and vessel or ocean construction comprising the same |
-
2017
- 2017-08-23 CN CN201710729628.9A patent/CN107339200A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101387188A (en) * | 2008-11-04 | 2009-03-18 | 中国海洋大学 | Suppressing vibration method for marine riser vortex-induced vibration and suppressing vibration apparatus thereof |
| CN101696751A (en) * | 2009-11-13 | 2010-04-21 | 天津大学 | Method for preventing buckle propagation and inhibiting vortex-induced vibration of benthal pipeline |
| CN101968139A (en) * | 2009-11-13 | 2011-02-09 | 天津大学 | Submarine pipeline buckle arrestor with spiral side plates and fixing method thereof |
| CN102121356A (en) * | 2011-01-12 | 2011-07-13 | 中国海洋石油总公司 | Helical strake vortex induced vibration inhibiting device |
| CN203034686U (en) * | 2012-11-27 | 2013-07-03 | 方泰建设集团有限公司 | Stiff core concrete-filled steel tube column internally inserted with Y-shaped steel plate |
| KR20150052486A (en) * | 2013-11-06 | 2015-05-14 | 대우조선해양 주식회사 | Apparatus for damping and generating vortex induced vibration of ocean riser, and vessel or ocean construction comprising the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814852A (en) * | 2021-01-07 | 2021-05-18 | 上海电气风电集团股份有限公司 | Spiral upright post floating type fan foundation and fan system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qian Jiamin Inventor after: Chen Lincong Inventor before: Chen Lincong Inventor before: Qian Jiamin |
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| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171110 |
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| RJ01 | Rejection of invention patent application after publication |