CN106592619B - A kind of suction caisson foundation with four-bladed vane - Google Patents
A kind of suction caisson foundation with four-bladed vane Download PDFInfo
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- CN106592619B CN106592619B CN201710037078.4A CN201710037078A CN106592619B CN 106592619 B CN106592619 B CN 106592619B CN 201710037078 A CN201710037078 A CN 201710037078A CN 106592619 B CN106592619 B CN 106592619B
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- bladed vane
- gear
- negative pressure
- pressure cylinder
- caisson foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
- E02B2017/0073—Details of sea bottom engaging footing
- E02B2017/0078—Suction piles, suction cans
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- Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
Abstract
The invention discloses a kind of suction caisson foundation with four-bladed vane, including negative pressure cylinder, the upper end of the negative pressure cylinder lower ending opening, the negative pressure cylinder is provided with capping, and drain valve is provided in the capping, and the drain valve is connected to the inner cavity of negative pressure cylinder；If being provided with dried layer four-bladed vane in the negative pressure cylinder；In caisson foundation penetration process, plane state in a vertical shape where four-bladed vane, after the completion of caisson foundation injection, plane where four-bladed vane goes to horizontality by vertical state.The problem of present invention provides a kind of suction caisson foundation with four-bladed vane, solves suction caisson foundation under long-term vertical uniform load q, and bearing capacity reduces after pore water pressure dissipation.
Description
Technical field
The present invention relates to floatation type offshore wind turbine anchorage technology fields, and in particular to a kind of suction caisson with four-bladed vane
Basis.
Background technology
Floatation type basis applies in general to off-lying sea marine site or the sea water advanced marine site more than 50m or more, this just needs one kind
Reliable base form provides anchoring for floatation type wind turbine.
The anchoring piece of floatation type offshore wind turbine largely uses gravity type foundation and pile foundation in global range, due to gravity
The delivery of formula basis is difficult, and cost is higher；Pile foundation construction needs Large Construction ship to drive piles, and faces severe sea situation item
Part, piling work construction period is of high cost long, and to enter mud deeper for pile foundation so that pile foundation cost is very expensive.How effectively to reduce
Floatation type offshore wind turbine anchor system cost has become important research topic.
Suction caisson foundation size range is wide, bearing capacity is big, the limit depth of water is big, in installation process on sea bed influence it is small,
It can apply in various soil properties and repeatable utilization, these are all that traditional pile foundation and gravity type foundation are not had
Advantage.In addition, suction caisson foundation low cost, installation equipment is relatively easy, and installation period is short.Under deep water conditions, anchor
Pool system is more economical, and it is convenient that installation is also relatively driven piles, and suction caisson foundation is widely used anchor in deep-sea oil gas exploitation
Pool basis.
The vertical anti-pulling capacity of suction caisson foundation mainly has side friction, cohesive force and negative pore water pressure group
At the vertical failure mode of, general suction caisson foundation there are three types of form, when suction caisson foundation rate of loading is slow, cylinder
Interior negative pressure and soil body pore water pressure fully dissipate, and at this moment local shear failure occurs for basis, and anti-pulling capacity is often relatively low,
Mainly by between cylinder inside and outside wall and the soil body frictional force and anchor certainly reassemble into.When suction caisson foundation rate of loading increase,
Negative pressure part dissipates but the soil body in cylinder is made to be moved together with cylinder enough in cylinder, and at this moment bottom tensile failure occurs for basis, resists
Bearing capacity is pulled out by bottom stretching resistance, the frictional force between the dead weight of cylinder and soil plug and basic outer wall and soil forms.When suction anchor quilt
When quickly extracting, negative pressure and soil body pore water pressure have little time to dissipate in cylinder, and at this moment basis generation is whole to be destroyed, bearing capacity
It is often maximum, by the dead weight of soil plug in cylinder and cylinder, the backward bearer power three parts composition of frictional force and soil between drum outer wall and soil.
However under long-term vertical uniform load q, the negative pressure in bucket gradually dissipates, cylinder vertical bearing capacity only lean on wall friction power with
For cylinder from reassembling into, bearing capacity is relatively low, and steel waste is serious.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of suction type with four-bladed vane
Caisson foundation solves suction caisson foundation under long-term vertical uniform load q, and bearing capacity reduces after pore water pressure dissipation
The problem of.
Technical solution：To achieve the above object, technical scheme is as follows：
A kind of suction caisson foundation with four-bladed vane, including negative pressure cylinder, the negative pressure cylinder lower ending opening, the negative pressure cylinder
Upper end be provided with capping, drain valve is provided in the capping, the drain valve is connected to the inner cavity of negative pressure cylinder；The negative pressure
If being provided with dried layer four-bladed vane in cylinder；In caisson foundation penetration process, plane state in a vertical shape where four-bladed vane, caisson foundation passes through
After the completion of entering, plane where four-bladed vane goes to horizontality by vertical state.
Further, the four-bladed vane includes shaft and tablet, and the tablet is axially disposed in shaft, and shaft is in cross
The both ends of intersection setting, the shaft are arranged with driving member respectively, and driving member drives tablet state in a vertical shape or horizontality.
Further, the four-bladed vane includes upper four-bladed vane and lower four-bladed vane, and the upper four-bladed vane is arranged in negative pressure cylinder
Middle part, the lower four-bladed vane are arranged in the bottom of negative pressure cylinder.
Further, the upper four-bladed vane includes upper flat plate and upper shaft, and the upper flat plate is axially disposed in upper shaft；
The lower four-bladed vane includes lower rotary shaft and lower tablet, and the lower tablet is axially disposed on lower rotary shaft.
Further, also set up in the capping including transmission shaft, driving device and gear-box, the driving device it is defeated
Respectively with transmission axis connection, the output end of the transmission shaft connects with corresponding vertically arranged gear-box outlet respectively；It is described
Gear-box is evenly arranged in around negative pressure cylinder, and the output end of the gear-box is drivingly connected with the both ends of upper shaft respectively, described
The output end of the bottom position of the corresponding negative pressure cylinder of gear-box, the gear-box is drivingly connected with the both ends of lower rotary shaft respectively.
The driving member that transmission shaft is corresponded in the gear-box is the gear being arranged in the output end of transmission shaft；The gear
The driving member of corresponding upper four-bladed vane is the middle gear being arranged at upper shaft both ends in case；Corresponding lower four-bladed vane in the gear-box
Driving member is the lower gear being arranged at lower rotary shaft both ends, is passed by driving chain between the gear, middle gear and lower gear
Dynamic connection.
Further, it is also set up including fairlead in the capping.
Further, further include being vertically provided at least two blocks of right-angled intersection steel plates in the negative pressure cylinder, separate negative pressure cylinder
Vertical upper at least four cabins.
Further, at least two blocks of right-angled intersection steel plates, the lower cross are correspondingly arranged on above the upper four-bladed vane
At least two blocks of right-angled intersection steel plates are correspondingly arranged on above plate.
Further, overlook direction, right-angled intersection steel plate are in rice font with four-bladed vane.
Advantageous effect：1, a kind of suction caisson foundation with four-bladed vane provided by the invention, in installation process four-bladed vane
State in a vertical shape, reduce installation process negative pressure cylinder penetration resistance, after the completion of injection four-bladed vane by driving equipment by vertical
State goes to horizontality, and when recycling suction caisson foundation, four-bladed vane can be gone to again by driving equipment by horizontality
Vertical state.
2, under long-term vertical uniform load q, the negative pressure in cylinder gradually dissipates, suction caisson foundation vertical bearing capacity
Wall friction power is only leaned on to be reassembled into certainly with cylinder, a kind of suction caisson foundation with four-bladed vane provided by the invention, by negative
Four-bladed vane in pressure cylinder can effectively utilize the weight of the soil body in negative pressure bucket, improve the vertical carrying of suction caisson foundation
Power.
Description of the drawings
Fig. 1 is a kind of preceding four-bladed vane of suction caisson foundation installation structural schematic diagram in a vertical shape with four-bladed vane；
Fig. 2 is the horizontal structural schematic diagram of four-bladed vane after a kind of suction caisson foundation installation with four-bladed vane；
Fig. 3 is four-bladed vane structural schematic diagram in a vertical shape before another suction caisson foundation installation with four-bladed vane；
Fig. 4 is the horizontal structural schematic diagram of four-bladed vane before another suction caisson foundation installation with four-bladed vane.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
A kind of suction caisson foundation with four-bladed vane, including negative pressure cylinder 10,10 lower ending opening of the negative pressure cylinder are described negative
The upper end of pressure cylinder 10 is provided with capping 11, is provided with drain valve 1 in the capping 11, the drain valve 1 is interior with negative pressure cylinder 10
Chamber is connected to；If being provided with dried layer four-bladed vane in the negative pressure cylinder；In caisson foundation penetration process, plane is in vertical where four-bladed vane
State, after the completion of caisson foundation injection, plane where four-bladed vane goes to horizontality by vertical state.The four-bladed vane includes turning
Axis and tablet, the tablet are axially disposed in shaft, and shaft is arranged in cross, the both ends of the shaft respectively with transmission
Part is arranged, and driving member drives tablet state in a vertical shape or horizontality.Further, the four-bladed vane includes upper four-bladed vane 71
With lower four-bladed vane 72, the upper four-bladed vane 71 is arranged at the middle part of negative pressure cylinder 10, and the lower four-bladed vane 72 is arranged in negative pressure cylinder 10
Bottom.
Specifically, the upper four-bladed vane 71 includes upper flat plate 91 and upper shaft 81, on the upper flat plate 91 is axially disposed within
In shaft 81；The lower four-bladed vane 72 includes lower rotary shaft 82 and lower tablet 92, and the lower tablet 92 is axially disposed within lower rotary shaft 82
On.
It is also set up including transmission shaft 4, driving device 3 and gear-box 6, the output of the driving device 3 in the capping 11
End is connect with transmission shaft 4 respectively, and the output end of the transmission shaft 4 is connected with corresponding vertically arranged gear-box 6 respectively；It is described
Gear-box 6 is evenly arranged in around negative pressure cylinder 10, and the output end of the gear-box 6 drives with the both ends of upper shaft 81 respectively to be connected
Connect, the bottom position of 6 corresponding negative pressure cylinder 10 of the gear-box, the output end of the gear-box 6 respectively with lower rotary shaft 82 two
End is drivingly connected.The driving member that transmission shaft 4 is corresponded in the gear-box 6 is the gear 51 being arranged in the output end of transmission shaft 4；
The driving member of corresponding upper four-bladed vane 71 is the middle gear 52 being arranged at 81 both ends of upper shaft in the gear-box 6；The gear-box 6
The driving member of four-bladed vane 72 is the lower gear 53 being arranged at 82 both ends of lower rotary shaft, the gear 51, middle gear 52 under middle correspondence
It is sequentially connected by driving chain between lower gear 53.
It is also set up including fairlead 2 in the capping 11.
Further include being vertically provided at least two blocks of right-angled intersection steel plates in the negative pressure cylinder 10, separates negative pressure cylinder 10 vertical
Upper is at least four cabins.The top of the upper four-bladed vane 71 is correspondingly arranged at least two blocks of right-angled intersection steel plates, and described lower ten
The top of letter stencil 72 is correspondingly arranged at least two blocks of right-angled intersection steel plates.Overlook direction, right-angled intersection steel plate are in rice with four-bladed vane
Font.
Embodiment：As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of suction caisson foundation with four-bladed vane,
Upper end including negative pressure cylinder 10, the lower ending opening of negative pressure cylinder 10, negative pressure cylinder 10 is provided with capping 11, and capping 11 is equipped with fairlead
2, drain valve 1, transmission shaft 4 and driving device 3, drain valve 1 are connected to the inner cavity of negative pressure cylinder 10, the connection driving of 4 one end of transmission shaft
Device 3, another side connect gear 51.Upper four-bladed vane 71 and lower four-bladed vane 72 are equipped in negative pressure cylinder 10, upper four-bladed vane 71 is arranged
At the middle part of negative pressure cylinder 10, upper four-bladed vane 71 is made of upper flat plate 91 and upper shaft 81, and 81 both ends of upper shaft are solid with middle gear 52
Fixed connection；Lower four-bladed vane 72 is arranged in the lower part of negative pressure cylinder 10, and lower four-bladed vane 72 is made of lower tablet 92 and lower rotary shaft 82, lower turn
82 both ends of axis are fixedly connected with lower gear 53；Gear 51, lower gear 53, middle gear 52 are arranged in gear-box 6 up and down
In.Upper four-bladed vane 71 is in a vertical shape with lower four-bladed vane 72 in suction caisson foundation penetration process, after the completion of injection, upper cross
Plate 71 goes to horizontality with the driving device 3 that lower four-bladed vane 72 is connected by gear by vertical state.The present invention passes through cross
Plate bears soil body gravity in negative pressure bucket and then improves suction caisson foundation body vertical bearing capacity.
In suction caisson foundation installation process, a water pipe (not shown), other end installation are installed at drain valve 1
Suction pump (not shown), by suction pump by negative pressure cylinder water and gas extract out, make negative pressure cylinder 10 is inside and outside to form pressure difference handle
Cylinder indentation sea bed, completes suction caisson foundation installation.The installation method can effectively reduce being constructed into for deep-sea floatation type wind turbine
This and installation period reduce weather conditions and make to sea meanwhile, it is capable to effectively reduce the difficulty of construction of floatation type offshore wind turbine
The influence of industry.
As shown in Figure 1, suction caisson foundation, in penetration process, upper four-bladed vane 71 and lower four-bladed vane 72 are in a vertical shape
State, the upper four-bladed vane 71 are mounted among suction caisson foundation, and upper four-bladed vane 71 is made of upper shaft 81 and upper flat plate 91,
Upper flat plate 91 is welded in shaft 81, and 81 both ends of upper shaft are equipped with middle gear 52；The lower four-bladed vane 72 is mounted on suction type
Caisson foundation bottom, lower four-bladed vane 72 are made of lower rotary shaft 82 and lower tablet 92, and lower tablet 92 is welded on lower rotary shaft 82, lower turn
82 both ends of axis are equipped with lower gear 53；Gear 51, middle gear 52, lower gear 53 are connected by driving chain (not shown), and set
It sets in gear-box 6 up and down, gear 51 is fixedly connected with 4 one end of transmission shaft being arranged in capping 11, transmission shaft 4
The other end connect with driving device 3, after the completion of suction caisson foundation injection, upper four-bladed vane 71 and lower four-bladed vane 72 difference
The driving device 3 connected by middle gear 52 and lower gear 53 goes to horizontality by vertical shape, as shown in Figure 2.
It is different from unlike Fig. 1, a kind of suction caisson foundation with four-bladed vane shown in Figure 2, shows in Fig. 3, Fig. 4
A kind of suction caisson foundation with four-bladed vane in accordance with an alternative illustrative embodiment of the present invention gone out, including negative pressure cylinder 10,
The lower ending opening of the negative pressure cylinder 10, the upper end of negative pressure cylinder are provided with capping 11, capping 11 be equipped with fairlead 2, drain valve 1 with
Driving device 3 is equipped with the steel plate 12 of two pieces of right-angled intersections up and down in negative pressure cylinder 10, among right-angled intersection steel plate 12 and
Bottom is equipped with rotatable four-bladed vane, and four-bladed vane is made of tablet and shaft, and shaft both sides are fixedly connected with gear, gear setting
In gear-box up and down.To be formed pressure difference inside and outside negative pressure cylinder suction caisson foundation pressure using single slope drainage valve
Enter sea bed.Right-angled intersection plate is in a vertical shape in penetration process, after the completion of injection, driving device that four-bladed vane is connected by gear
Horizontality is gone to by vertical shape.The present invention improves cylinder vertical bearing capacity by four-bladed vane bears soil body gravity in bucket.
Steel plate 12 equipped with two pieces of right-angled intersections is being divided into four cabins, the steel plate of right-angled intersection in cylinder in suction caisson
12 are fixedly connected with negative pressure cylinder 10, and in the middle part of steel plate and bottom is equipped with rotatable right-angled intersection plate.
As shown in figure 3, suction caisson foundation is in penetration process, and upper and lower four-bladed vane state in a vertical shape, the upper cross
Plate 71 is mounted on 12 middle part of right-angled intersection steel plate, and upper four-bladed vane 71 is made of upper shaft 81 and upper flat plate 91, and upper flat plate 91 welds
In upper shaft 81,81 both ends of upper shaft are equipped with middle gear 52；The lower four-bladed vane 72 is mounted on suction caisson foundation bottom,
Lower four-bladed vane 72 is made of lower rotary shaft 92 and lower tablet 82, and lower tablet 92 is welded on lower rotary shaft 82, and 82 both ends of lower rotary shaft are equipped with
Lower gear 53；51 middle gear of gear, 52 lower gear 53 connected by driving chain (not shown), and is arranged up and down
In gear-box 6, gear 51 is fixedly connected with 4 one end of transmission shaft being arranged in capping 11, the other end of transmission shaft 4 and driving
Device connection 3, after the completion of suction caisson foundation injection, the driving device that upper and lower four-bladed vane is connected by gear is by vertical shape
Horizontality is gone to, as shown in Figure 4.
The arrangement form of the four-bladed vane is flexible and changeable, can not only arrange two layers, can also be according to suction caisson
One or more layers is arranged in height change, in addition can not only be arranged in right-angled intersection steel plate, can also be arranged in right-angled intersection
The centre of steel plate, vertical view right-angled intersection steel plate is with four-bladed vane at forms such as M shapes.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of suction caisson foundation with four-bladed vane, it is characterised in that：Including negative pressure cylinder (10), under the negative pressure cylinder (10)
The upper end of end opening, the negative pressure cylinder (10) is provided with capping (11), and drain valve (1) is provided on the capping (11), described
Drain valve (1) is connected to the inner cavity of negative pressure cylinder (10)；If being provided with dried layer four-bladed vane in the negative pressure cylinder；Caisson foundation injection
Cheng Zhong, plane state in a vertical shape where four-bladed vane, after the completion of caisson foundation injection, plane where four-bladed vane is gone to by vertical state
Horizontality.
2. a kind of suction caisson foundation with four-bladed vane according to claim 1, it is characterised in that：The four-bladed vane packet
Shaft and tablet are included, the tablet is axially disposed in shaft, and shaft is arranged in cross；The both ends point of the corresponding shaft
It is not arranged with driving member, driving member drives tablet state in a vertical shape or horizontality.
3. a kind of suction caisson foundation with four-bladed vane according to claim 1 or 2, it is characterised in that：The cross
Plate includes upper four-bladed vane (71) and lower four-bladed vane (72), and upper four-bladed vane (71) setting is described at the middle part of negative pressure cylinder (10)
Bottom of lower four-bladed vane (72) setting in negative pressure cylinder (10).
4. a kind of suction caisson foundation with four-bladed vane according to claim 3, it is characterised in that：The upper four-bladed vane
(71) include upper flat plate (91) and upper shaft (81), the upper flat plate (91) is axially disposed in upper shaft (81)；Described lower ten
Letter stencil (72) includes lower rotary shaft (82) and lower tablet (92), and the lower tablet (92) is axially disposed on lower rotary shaft (82).
5. a kind of suction caisson foundation with four-bladed vane according to claim 4, it is characterised in that：The capping (11)
On also set up including transmission shaft (4), driving device (3) and gear-box (6), the output end of the driving device (3) respectively with biography
Moving axis (4) connects, and the output end of the transmission shaft (4) is connected with corresponding vertically arranged gear-box (6) respectively；The gear
Case (6) is evenly arranged in around negative pressure cylinder (10), and the output end of the gear-box (6) drives with the both ends of upper shaft (81) respectively
Connection, the bottom position of the corresponding negative pressure cylinder (10) of the gear-box (6), the output end of the gear-box (6) respectively with lower turn
The both ends of axis (82) are drivingly connected.
6. a kind of suction caisson foundation with four-bladed vane according to claim 5, it is characterised in that：The gear-box
(6) driving member that transmission shaft (4) is corresponded in is gear (51) of the setting in the output end of transmission shaft (4)；The gear-box (6)
The driving member of four-bladed vane (71) is middle gear (52) of the setting at upper shaft (81) both ends in middle correspondence；In the gear-box (6)
The driving member of corresponding lower four-bladed vane (72) be lower gear (53) of the setting at lower rotary shaft (82) both ends, the gear (51), in
It is sequentially connected by driving chain between gear (52) and lower gear (53).
7. a kind of suction caisson foundation with four-bladed vane according to claim 1 or 5, it is characterised in that：The capping
(11) it is also set up on including fairlead (2).
8. a kind of suction caisson foundation with four-bladed vane according to claim 3, it is characterised in that：The negative pressure cylinder
(10) further include being vertically provided at least two blocks of right-angled intersection steel plates in, separate negative pressure cylinder (10) vertical upper at least four cabins
Room.
9. a kind of suction caisson foundation with four-bladed vane according to claim 8, it is characterised in that：The upper four-bladed vane
(71) it is correspondingly arranged at least two blocks of right-angled intersection steel plates above, is correspondingly arranged at least above the lower four-bladed vane (72)
Two blocks of right-angled intersection steel plates.
10. a kind of suction caisson foundation with four-bladed vane according to claim 9, it is characterised in that：Overlook direction, ten
Word transposition bracket is in rice font with four-bladed vane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037078.4A CN106592619B (en) | 2017-01-19 | 2017-01-19 | A kind of suction caisson foundation with four-bladed vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710037078.4A CN106592619B (en) | 2017-01-19 | 2017-01-19 | A kind of suction caisson foundation with four-bladed vane |
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| CN106592619A CN106592619A (en) | 2017-04-26 |
| CN106592619B true CN106592619B (en) | 2018-08-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107268672B (en) * | 2017-07-31 | 2019-03-29 | 河海大学 | A kind of plate anchor foundation mounting structure and method convenient for control rotation gradient |
| EP3444403A1 (en) | 2017-08-17 | 2019-02-20 | Siemens Gamesa Renewable Energy A/S | Segmented suction bucket |
| CN109306705B (en) * | 2018-11-01 | 2020-11-27 | 合肥学院 | Bucket foundation capable of weakening soil blockage phenomenon |
| CN112253398B (en) * | 2020-09-11 | 2022-04-29 | 明阳智慧能源集团股份公司 | Automatic internal gas emission method for single pile foundation of offshore wind turbine generator system |
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|---|---|---|---|---|
| CN1776119A (en) * | 2004-11-19 | 2006-05-24 | 光洋自动机株式会社 | Caisson structure |
| CN203795446U (en) * | 2014-04-11 | 2014-08-27 | 中国化学工程第十三建设有限公司 | Steel-plate concrete caisson |
| CN106049526A (en) * | 2015-04-02 | 2016-10-26 | 韩国海洋科学技术院 | Suction foundation having enhanced self-weight penetration and construction method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3446647B2 (en) * | 1999-02-09 | 2003-09-16 | 株式会社大林組 | Construction method of underwater foundation structure using caisson frame and underbody for underwater foundation structure |
| JP2000257077A (en) * | 1999-03-11 | 2000-09-19 | Ohbayashi Corp | Construction method of underwater foundation |
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2017
- 2017-01-19 CN CN201710037078.4A patent/CN106592619B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776119A (en) * | 2004-11-19 | 2006-05-24 | 光洋自动机株式会社 | Caisson structure |
| CN203795446U (en) * | 2014-04-11 | 2014-08-27 | 中国化学工程第十三建设有限公司 | Steel-plate concrete caisson |
| CN106049526A (en) * | 2015-04-02 | 2016-10-26 | 韩国海洋科学技术院 | Suction foundation having enhanced self-weight penetration and construction method thereof |
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