CN209636840U - A kind of firming device that can eliminate barrel base soil plug phenomenon - Google Patents
A kind of firming device that can eliminate barrel base soil plug phenomenon Download PDFInfo
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- CN209636840U CN209636840U CN201821788360.2U CN201821788360U CN209636840U CN 209636840 U CN209636840 U CN 209636840U CN 201821788360 U CN201821788360 U CN 201821788360U CN 209636840 U CN209636840 U CN 209636840U
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- firming
- barrel base
- disk
- stake
- firming disk
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Abstract
The utility model discloses a kind of firming device that can eliminate barrel base soil plug phenomenon, including firming disk, firming disk diameter is less than barrel base internal diameter, and firming disk center is equipped with the sets of holes of interspersed stake, and sets of holes peripheral distribution has permeable hole.In work progress, firming disk is first made；Lift by crane stake and firming disk；Sea bed is squeezed into stake；Lifting barrel base makes it sink to contacting sea bed by self weight and covers in the periphery of firming disk；Barrel base injection to projected depth under suction.After the overall structure of stake and firming disk composition squeezes into sea bed in the utility model method, the frictional force generated by stake and the soil body, the upward protuberance of seabed soil and heap soil or fertilizer over and around the roots are high when stake can prevent barrel base from constructing jointly with firming disk, can eliminate in barrel base work progress soil plug phenomenon, it is ensured that barrel base accurately construct in place；Permeable hole is set on firming disk, and water can be moved with air by permeable hole in work progress, and the setting of firming disk is on the construction of barrel base substantially without influence.
Description
Technical field:
The utility model relates to the barrel bases in ocean engineering, and in particular to a kind of to eliminate barrel base soil plug phenomenon
Firming device.
Background technique:
Barrel base results from the Norway of nineteen nineties, is a kind of plectane basis with skirt, since it has
Reduce project amount, investment reduction, shorten the offshore construction time, it is reusable the features such as, be gradually employed to ocean platform with
In offshore wind power foundation.
It there is also some problems in the design and construction and installation of barrel base urgently to be resolved.Wherein, soil plug phenomenon is exactly
Perplex one of the problem of barrel base technology in recent years.So-called soil plug phenomenon, during referring to barrel base injection sea bed, in bucket
Mud face stop up upwards under bucket inside and outside differential pressure or seepage force effect it is high, and the barrel base injection later period in advance and bucket top contact, make
Barrel base cannot sink down into projected depth.In the suction anchor installing engineering for several barrel bases production that the Bohai Sea carries out, hair
Raw soil plug height is generally 10~30cm.The suction anchor sinking engineering of barrel base production is carried out within 1981 in the oil field GORM
In, also encountering native plug problem, (the seabed soil property of sinking suction anchor is mainly sand, and the maximum height of soil plug is up to close in anchor
3m), soil plug makes suction anchor that cannot sink to scheduled projected depth, except difficulty is brought to installation, extends sea
Outside the time of upper installation exercise, the bearing capacity of suction anchor is also reduced to a certain extent.Simultaneously as soil plug rises out anchor
Seabed mud face causes the change in flow field near anchor, and anchor surrounding soil is washed away in formation, further reduced the carrying of suction anchor
Power, for as shallow waters along the coast such as the Bohai Sea, this influence is especially pronounced.It to suction anchor bring harm be cannot be neglected (from
The mud trace of recycling suction anchor can be seen that the depth of this local scour up to 1.5m).As it can be seen that decrease to be developed or elimination
The technology of soil plug phenomenon inside barrel base.
Barrel base under negative pressure sink during, soil plug uplift capacity it is not only related with the property of the soil body, staving size, more with
The vacuum magnitude applied is closely related.From the angle analysis of soil mechanics, the generation of soil plug phenomenon and distribution and the soil of seepage field
Deformation failure characteristic it is related.Generally, the hydraulic gradient inside and outside bucket is bigger, and soil plug phenomenon is more serious.Therefore, in engineering in order to
Weaken soil plug phenomenon, selects relatively small Negative Pressure Difference, often to reduce hydraulic gradient.As thought in API-RP-2SK specification
When barrel base negative pressure is sunk, if the negative pressure applied, which is less than, allows negative pressure value, the volume that native Sialon rises is only equal to a barrel wall sinking institute
Displaced soil body volume.But negative pressure is too small in bucket, will lead to the reduction of barrel base penetrating speed, extends the construction time, and work as
When barrel base is by biggish frictional resistance, lesser Negative Pressure Difference may cause barrel base can not injection sea bed to designing depth
Degree.As it can be seen that reducing hydraulic gradient by the Negative Pressure Difference inside and outside reduction bucket to weaken the thinking of soil plug phenomenon and exist centainly
Limitation.It is necessary to develop the method for soil plug phenomenon inside easy, cheap elimination barrel base, promote barrel base construction skill
The innovation and progress of art.
Utility model content:
In order to make up the deficiency of prior art problem, barrel base soil can be eliminated the purpose of the utility model is to provide a kind of
The firming device of phenomenon is filled in, the seabed soil in bucket is strongly pushed down in work progress using firming disk, makes the part seabed soil
It can not swell to form native plug upwards, construct convenient for the injection of barrel base.
The technical solution of the utility model is as follows:
The firming device of barrel base soil plug phenomenon can be eliminated, which is characterized in that including firming disk, the firming disk diameter
Less than barrel base internal diameter, firming disk center is equipped with the sets of holes of interspersed stake, and sets of holes periphery to firming plate edge is evenly distributed with
Water hole.
The firming device that barrel base soil plug phenomenon can be eliminated, which is characterized in that the firming disk diameter compared with
Hour, by plastics or cast iron or metal with plastics are mutually chimeric is processed into discoid body；When firming disk diameter is larger, by plastics or casting
Iron or metal and plastics are mutually chimeric to be made multiple fan-shaped block parts and is mutually spliced to form entirety.
The firming device that barrel base soil plug phenomenon can be eliminated, which is characterized in that the permeable bore dia is not
Greater than 1.5cm.
The firming device that barrel base soil plug phenomenon can be eliminated, which is characterized in that the upper table of the firming disk
Face is horizontal, has integrally formed cylinder in the middle part of lower surface, and sets of holes are the stepped hole through firming disk and cylinder, and upper section is heavy
Bore dia is greater than lower section bore dia, and upper section counter bore hole diameters are greater than stake top portion enlarged footing diameter, and lower section bore dia is greater than the diameter of stake,
Its top is sunk in upper section counterbore not higher than firming disk upper surface after sea bed is squeezed into stake.
The beneficial effects of the utility model are:
After the overall structure of the utility model stake and firming disk composition squeezes into sea bed, by the friction of stake and soil body generation
The upward protuberance of seabed soil is high with heap soil or fertilizer over and around the roots when power, stake and firming disk can prevent barrel base from constructing jointly, can eliminate barrel base
In work progress soil plug phenomenon, it is ensured that barrel base it is accurate construction in place；Permeable hole, work progress are set on firming disk
Middle water can be moved with air by permeable hole, i.e., the setting of firming disk is on the construction of barrel base substantially without influence.
Detailed description of the invention:
Fig. 1 is the utility model firming disk top view.
Fig. 2 is the utility model firming disk bottom view.
Fig. 3 is the utility model firming disk sectional view.
Fig. 4 enters firming disk for the utility model pile protection and vertically stands on sea bed face schematic diagram.
Fig. 5 is that sea bed schematic diagram is squeezed into the utility model stake.
Fig. 6 entangles firming disk for the utility model barrel base and is pressed in schematic three dimensional views on sea bed face.
Fig. 7 entangles firming disk for the utility model barrel base and is pressed in sectional view on sea bed face.
Fig. 8 is the utility model barrel base gradually injection sea bed schematic diagram.
Fig. 9 is that the construction of the utility model barrel base injection sea bed terminates schematic diagram.
Description of symbols: 1, firming disk；2, permeable hole；3, sets of holes；4, stake；5, enlarged footing；6, barrel base；7, it passes in and out
Water valve；A, sea bed face.
Specific embodiment:
Referring to attached drawing:
The firming device of barrel base soil plug phenomenon, including firming disk 1 can be eliminated, 1 diameter of firming disk is less than barrel base
Internal diameter, 1 center of firming disk are equipped with the sets of holes 3 of interspersed stake, and 3 periphery of sets of holes to firming plate edge is evenly distributed with permeable hole 2.
When 1 diameter of firming disk is smaller, by plastics or cast iron or metal with plastics are mutually chimeric is processed into discoid body；Firming disk
1 when being relatively large in diameter, and multiple fan-shaped block parts are made mutually are spliced to form entirety by plastics or cast iron or metal and plastics are mutually chimeric.
2 diameter of permeable hole is not more than 1.5cm, and only water can be flowed out with air from permeable hole 2 when construction
The upper surface of firming disk 1 is horizontal, has integrally formed cylinder in the middle part of lower surface, and sets of holes are through firming disk
And the stepped hole of cylinder, upper section counter bore hole diameters are greater than lower section bore dia, upper section counter bore hole diameters are greater than stake top portion enlarged footing diameter, under
Hole diameter is greater than the diameter of stake, its top is sunk in upper section counterbore not higher than firming disk upper surface after sea bed is squeezed into stake.
A kind of work progress that can eliminate barrel base soil plug phenomenon, includes the following steps:
1), according to sea bed geological conditions and barrel base size, firming disk 1 is made:
The diameter of firming disk 1 is less than the internal diameter of barrel base 6, and firming disk 1 can be made of plastics or cast iron, can also be by metal
With plastics are mutually chimeric is made；Hollow sets of holes 3 are arranged in the center of firming disk 1；It is entire to press when the diameter of firming disk 1 is smaller
Native disk 1 can be integrally formed by single rounded material；When firming disk 1 is when being relatively large in diameter, firming disk 1 can be by multiple fan-shaped block part phases
Mutually it is spliced to formCircle it is whole.
Equally distributed permeable hole 2 is set on firming disk 1, and 2 diameter of permeable hole is not more than 1.5cm, barrel base is made to construct
When only water can be flowed out from permeable hole 2 with air, and seabed soil can not pass through permeable hole 2 formed piping or stream soil.
Permeable hole is set on firming disk, and in work progress water can be moved with air by permeable hole, i.e. firming disk
Construction on barrel base is set substantially without influence.
FIG. 1 to FIG. 3 gives a kind of 1 structure type of firming disk of monolithic.It can also be designed to multiple sectors as needed
Block part is mutually assembled into the situation of round entirety, needs to keep the upper surface of firming disk 1 horizontal (because of subsequent firming disk after assembling
1 upper surface directly contacts the bucket top/bottom part with barrel base).
When being relatively large in diameter for firming disk 1, can by metal (steel) with plastics are mutually chimeric forms, metal is the stress of structure
Skeleton, plastics are covering, the material for pushing down seabed soil.Regardless of firming disk 1 is using which kind of construction, it is both needed to that barrel-shaped base can be undertaken
Seabed soil swells the load of generation upwards in plinth work progress, can effectively prevent seabed soil and generates soil plug phenomenon, intensity
Stress in work progress should be met and concentrate needs.
2), lifting stake 4 and firming disk 1:
Stake 4 is inserted in the sets of holes 3 at the middle part of firming disk 1, using ancillary measure make firming disk 1 and stake 4 mutually binding without
Subsequent construction is influenced, lifting stake 4 stands on it above sea bed in specified sea area, and firming disk 1 still covers in stake 4 when lifting by crane stake 4
And do not fall off, as shown in Figure 4.The top of stake 4 is equipped with enlarged footing 5, and the outer diameter of enlarged footing 5 is greater than the diameter of sets of holes 3.
The upper surface of firming disk 1 is horizontal, and the sets of holes 3 to lower recess are arranged in the center position of firming disk 1, stake 4
Diameter is less than the aperture of sets of holes 3, and the diameter of the enlarged footing 5 at the top of stake 4 is greater than the aperture of sets of holes 3 and is less than the diameter of recess,
So that the upper surface that its top after sea bed is not higher than firming disk 1 is squeezed into stake 4.
The length of stake 4 need to be according to sea bed geological conditions and the comprehensive determination of construction condition of negative pressure.Firming disk 1 prevents seabed soil
The load swelled upwards is all from the frictional force of stake 4 Yu seabed soil.If the length of stake 4 is too small, it may cause firming disk 1 and be difficult to
Seabed soil is prevented to swell upwards；If the length of stake 4 is excessive, increase the difficulty of construction of stake 4, thus need to select one it is relatively reasonable
4 length of stake.
Stake 4 and the intensity and rigidity of firming disk 1 need to meet stress needs under execution conditions, it is ensured that barrel base work progress
Middle stake 4 and 1 without flexing of firming disk and failure.
When the seabed soil surface of quasi- construction location is compared with out-of-flatness, smooth sea bed face in advance is needed, so as to 1 energy of firming disk
It is horizontal as far as possible to be contacted with seabed soil.
3) sea bed, is squeezed into stake 4:
Stake 4 is squeezed into using construction equipment the sea bed in specified sea area.After stake 4 is driven into sea bed, the firming disk in stake 4 is covered
1 is limited by the enlarged footing 5 at 4 top of stake, is fixed, constraining and being tightly attached to sea bed face, as shown in Figure 5.Stake 4 is formed with firming disk 1
The upward protuberance and heap soil or fertilizer over and around the roots that overall structure can prevent subsequent seabed soil from generating under the effect of 6 Negative Pressure Difference of barrel base are high.
When seabed soil is mud, muck soil or soft fine sand, the overall structure that stake 4 is formed with firming disk 1 can be passed through
Enter biggish depth, on the one hand plays the role of being compacted seabed soil, the injection of subsequent barrel base is facilitated to construct；On the other hand
Seabed soil is compacted its rear generation piping and the difficulty of stream soil is bigger, and it is advantageous to fill in phenomenon to elimination soil.
4), lifting barrel base 6 makes it sink to contacting sea bed by self weight and covers in the periphery of firming disk 1:
Barrel base 6 is lifted by crane, it is made gradually to sink to contacting sea bed by self weight and is covered in the periphery of firming disk 1.It constructed
Undersea detection and monitoring device can be used in journey, it is ensured that barrel base 6 accurately sinks and do not press against on firming disk 1, such as Fig. 6 and figure
Shown in 7.The diameter of firming disk 1 is less than the internal diameter of barrel base 6, convenient for the placement of barrel base 6.
In general, needing to be scanned and monitor using underwater robot (detecting devices) in barrel base work progress, guide
The sinking and placement of barrel base, it is ensured that barrel base is covered in the periphery of firming disk 1.
5), barrel base injection to projected depth under suction:
The water pump for opening connection 7 water pipe of inlet/outlet valve is extracted air and water inside barrel base 6 gradually outside bucket out and is formed
Negative Pressure Difference, gradually injection sea bed confirms the installation appearance of barrel base 6 to projected depth to barrel base 6 under the action of Negative Pressure Difference
When state is met the requirements, construction terminates.The step is identical as the conventional construction method of barrel base.Due to the sea of barrel base bottom
The bed soil body is securely fixed by firming disk 1 and stake 4, and the hydraulic gradient that bucket internal and external pressure difference is formed can not make seabed soil break through firming
Disk 1 stops up high formation soil plug upwards, so as to eliminate the soil plug phenomenon in barrel base work progress.
Fig. 8 shows the schematic diagram of barrel base gradually injection sea bed, Fig. 9 illustrates the final injection sea bed of barrel base extremely
The schematic diagram of projected depth.After construction, the bottom at the top and barrel base bucket top of firming disk 1 contacts with each other.Stake 4 and pressure
Native disk 1 plays the role of fixed seabed soil in the construction process, and after construction, the pressure difference inside and outside bucket is gradually eliminated, sea
The bed soil body no longer has the trend swelled upwards, the seabed soil therefore stake 4 and firming disk 1 also no longer need restraint.Therefore stake 4 and firming
Disk 1 belongs to temporary structure, simplifies its structure and construction as far as possible under the premise of being able to satisfy construction and needing, reaches lower and make
The purpose of valence.
After the overall structure of stake and firming disk composition squeezes into sea bed, by the frictional force that stake and the soil body generate, stake and firming
The upward protuberance of seabed soil is high with heap soil or fertilizer over and around the roots when disk can prevent barrel base from constructing jointly, can eliminate in barrel base work progress
Soil plug phenomenon, it is ensured that barrel base it is accurate construction in place.
Structure depicted in this specification attached drawing, ratio, size etc., only to cooperate the revealed content of specification,
So that those skilled in the art understands and reads, enforceable qualifications are not intended to limit the utility model, therefore are not had
Technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, is not influencing the utility model
Under the effect of can be generated and the purpose that can reach, it should all still fall in the revealed technology contents of the utility model and obtain and can cover
In the range of.Meanwhile cited such as " top " in this specification, "horizontal", " upward ", " periphery ", " downward " term,
It is merely convenient to being illustrated for narration, rather than to limit the enforceable range of the utility model, the change of relativeness or tune
It is whole, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the utility model.
The case where partial shape and part make of firming disk and stake are shown only in attached drawing, according to mentioned thinking,
The shape, quantity, connection type that can change firming disk and stake form the structure of the fixation seabed soil of other correlation types
Object belongs to the equivalent modifications and change of this technology, and details are not described herein again.
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable；The same or similar label corresponds to same or similar
Component；The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent.
The utility model is not limited to above-mentioned specific embodiment, according to above content, according to the ordinary skill of this field
Knowledge and customary means, under the premise of not departing from the utility model above-mentioned basic fundamental thought, the utility model can also be made
Equivalent modifications, replacement or the change of other diversified forms, all fall within the protection scope of the utility model.
Claims (4)
1. a kind of firming device that can eliminate barrel base soil plug phenomenon, which is characterized in that including firming disk, the firming disk is straight
Diameter is less than barrel base internal diameter, and firming disk center is equipped with the sets of holes of interspersed stake, and sets of holes periphery to firming plate edge is evenly distributed with
Permeable hole.
2. the firming device according to claim 1 that barrel base soil plug phenomenon can be eliminated, which is characterized in that the pressure
When native disk diameter is smaller, by plastics or cast iron or metal with plastics are mutually chimeric is processed into discoid body；When firming disk diameter is larger,
It multiple fan-shaped block parts is made mutually is spliced to form entirety by plastics or cast iron or metal and plastics are mutually chimeric.
3. the firming device according to claim 1 that barrel base soil plug phenomenon can be eliminated, which is characterized in that described is saturating
Water hole diameter is not more than 1.5cm.
4. the firming device according to claim 1 that barrel base soil plug phenomenon can be eliminated, which is characterized in that the pressure
The upper surface of native disk is horizontal, has integrally formed cylinder in the middle part of lower surface, and sets of holes are the rank through firming disk and cylinder
Terraced hole, upper section counter bore hole diameters are greater than lower section bore dia, and upper section counter bore hole diameters are greater than stake top portion enlarged footing diameter, and lower section bore dia is big
In the diameter of stake, its top is sunk in upper section counterbore not higher than firming disk upper surface after sea bed is squeezed into stake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821788360.2U CN209636840U (en) | 2018-11-01 | 2018-11-01 | A kind of firming device that can eliminate barrel base soil plug phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821788360.2U CN209636840U (en) | 2018-11-01 | 2018-11-01 | A kind of firming device that can eliminate barrel base soil plug phenomenon |
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| Publication Number | Publication Date |
|---|---|
| CN209636840U true CN209636840U (en) | 2019-11-15 |
Family
ID=68472719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821788360.2U Expired - Fee Related CN209636840U (en) | 2018-11-01 | 2018-11-01 | A kind of firming device that can eliminate barrel base soil plug phenomenon |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878353A (en) * | 2021-01-15 | 2021-06-01 | 浙江工业大学 | Reverse filtering device applied to offshore wind turbine pile and bucket composite foundation and construction method |
| CN113330878A (en) * | 2021-07-15 | 2021-09-03 | 张新峰 | Forestry nursery stock planting soil compactor |
-
2018
- 2018-11-01 CN CN201821788360.2U patent/CN209636840U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878353A (en) * | 2021-01-15 | 2021-06-01 | 浙江工业大学 | Reverse filtering device applied to offshore wind turbine pile and bucket composite foundation and construction method |
| CN113330878A (en) * | 2021-07-15 | 2021-09-03 | 张新峰 | Forestry nursery stock planting soil compactor |
| CN113330878B (en) * | 2021-07-15 | 2023-04-28 | 张新峰 | Forestry nursery stock planting soil pressing device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191115 Termination date: 20211101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |