CN107630477A - A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction - Google Patents
A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction Download PDFInfo
- Publication number
- CN107630477A CN107630477A CN201710976328.0A CN201710976328A CN107630477A CN 107630477 A CN107630477 A CN 107630477A CN 201710976328 A CN201710976328 A CN 201710976328A CN 107630477 A CN107630477 A CN 107630477A
- Authority
- CN
- China
- Prior art keywords
- cyclic
- loading
- pile foundation
- cyclic loading
- horizontal
- 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.)
- Pending
Links
Abstract
The invention belongs to field of civil engineering, in particular it relates to a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction.A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction, including, unidirectional horizontal cyclic loading, two-way horizontal CYCLIC LOADING, vertical CYCLIC LOADING, vertically loaded with the loading of unidirectional horizontal cyclic, multidirectional horizontal cyclic；Wherein loading device is made up of chamber, drain bar, fixed pulley, pile foundation model, displacement transducer, foil gauge, pull pressure sensor, counterweight load bar, spring, motor, wheel disc, threaded post, bottom plate, steel loop.The present invention solves the problems, such as that existing experimental rig individually can only be loaded vertically or horizontal to loading, can simulate vertical, horizontal, horizontal bidirectional, vertically with horizontal, multidirectional cyclic load loading condition, and there is chamber and drain bar, soil moisture content change and the influence of horizontal whirl-sprayed pile angular separation can be considered.
Description
Technical field
The invention belongs to field of civil engineering, in particular it relates to a kind of circulation for testing offshore foundation pile-soil interaction
Loading system.
Background technology
With world energy sources crisis and the aggravation of problem of environmental pollution, the utilization of new energy are extensive by countries in the world
Concern, although Oversea wind power generation starts late, but because storage capacity it is abundant, it is widely distributed, be easy to extensive concentrate to develop and not
The advantage of land occupation resource, at home and abroad development was swift and violent in recent years.The construction of China's wind power plant will greatly alleviate China east
The energy crisis in portion area, optimizes electric network composition, is the important method for realizing sustainable development, has great strategic significance.
At sea in wind power engineering, base form has single-pile foundation, more pile foundations, monotubular basis, multi-bucket foundation, multiple
Close basis and buoyant foundation.Superstructure will undertake wind, wave etc. within the runtime has obvious periodic cyclic load.
Wind power foundation is vertical caused by the gravity load such as wind power tower and Fan Equipment, blower fan work load and wind load and horizontal
Under cyclic load collective effect, accumulative sedimentation and deformation is easily produced, if this deformation cannot be controlled effectively, it will serious
Influence the normal operation and safe operation of blower fan.Rational method prediction and control are found vertically and under horizontal whirl-sprayed pile effect
The bearing capacity of wind power foundation and accumulated deformation, the normal operation and safety for ensureing these engineerings are significant.
For the basis under the effect of vertical and horizontal whirl-sprayed pile, the construction of wind power foundation faces two problems：
(1) accumulated deformation of wind power foundation is predicted under cyclic load；
(2) under cyclic load, the determination of wind power foundation bearing capacity.Obviously two aspects also lack so far more than more may be used
The analysis method leaned on.To make up the limitation of theory analysis, it is necessary to reference to indoor model test, important engineering is analyzed,
Key technology therein is how analog basis bear vertical cyclic load, horizontal whirl-sprayed pile, bidirectional circulating load and not
The effect of cyclic load under same level angle, and at present it is not yet found that closing the report of the problem.
The content of the invention
The defects of in order to overcome above-mentioned prior art to exist, the present invention provide a kind of applied widely, experiment process operation
Simply, the pilot system of low, convenient disassembly the simulation loop load action of cost.
To achieve the above object, the present invention uses following proposal：
A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction includes：Unidirectional horizontal cyclic loads, is two-way
Horizontal cyclic loading, the loading of vertical CYCLIC LOADING, multidirectional horizontal cyclic, wherein loading device are by chamber, drain bar, fixed cunning
Wheel, pile foundation model, displacement transducer, foil gauge, pull pressure sensor, counterweight load bar, spring, motor, wheel disc, screw thread
Post, bottom plate, steel loop assemble.
Compared with prior art, the present invention has advantages below：
(1) present invention is simple to operate, places loading equipemtn by combining, solving existing experimental rig can only individually be carried out
Vertical loading is horizontal to the problem of loading, additionally it is possible to simulation is vertical, level, horizontal bidirectional, vertically with horizontal, multidirectional circulation
Load loading condition.
(2) present invention has chamber and drain bar, can consider soil moisture content change and horizontal whirl-sprayed pile direction folder
The influence at angle.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is a variety of loading mode structural representations of the present invention；
Fig. 2 is unidirectional horizontal cyclic loaded planar schematic diagram；
Fig. 3 is that unidirectional horizontal cyclic loads elevational schematic view；
Fig. 4 is two-way horizontal CYCLIC LOADING floor map；
Fig. 5 is two-way horizontal CYCLIC LOADING elevational schematic view；
Fig. 6 is vertical CYCLIC LOADING elevational schematic view；
Fig. 7 is vertically to load elevational schematic view with unidirectional horizontal cyclic；
Fig. 8 is multidirectional horizontal cyclic loaded planar schematic diagram；
Fig. 9 is steel loop plan schematic diagram；
Figure 10 is steel loop and pile foundation model connection diagram；
In figure：1st, chamber, 2, drain bar, 3, fixed pulley, 4, pile foundation model, 5, displacement transducer, 6, foil gauge, 7,
Pull pressure sensor, 8, counterweight load bar, 9, spring, 10, motor, 11, wheel disc, 12, threaded post, 13, bottom plate, 14, steel loop.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, for the deficiencies in the prior art, in order to solve technical problem as above,
Present applicant proposes a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction.
A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction, including unidirectional horizontal cyclic load, are two-way
Horizontal cyclic loading, vertical CYCLIC LOADING, vertically loaded with the loading of unidirectional horizontal cyclic, multidirectional horizontal cyclic, wherein loading dress
Put by chamber 1, drain bar 2, fixed pulley 3, pile foundation model 4, displacement transducer 5, foil gauge 6, pull pressure sensor 7, weight
Code load bar 8, spring 9, motor 10, wheel disc 11, threaded post 12, bottom plate 13, steel loop 14 form.
Chamber 1 is the uncovered cuboid by angle steel reinforced, and 1 four inwalls of chamber set drain bar 2, and drain bar 2 is adopted
With water penetration plank, the inwall lower end of chamber 1 is provided with osculum, the soil body used in experiment is loaded in chamber 1.
Fixed pulley 3, for simplification, saves support frame in sketch map, the material of fixed pulley 3 is high-strength conjunction by support frame fixed position
Gold.
Respectively a piece seizing wire of connection, one end seizing wire are directly connected at the both ends of spring 9 with threaded post 12, the thin steel of the other end
Cord bypasses fixed pulley 3, by the upper horizontal of pull pressure sensor 7 and pile foundation model 4 or is vertically connected.
Pile foundation model 4 is partially embedded in the soil body used in experiment, and pile foundation model 4, which is located on the pile lining of soil body part, to be glued
Foil gauge 6 is posted, displacement transducer 5 is provided with soil body upper surface, for ease of connecting seizing wire, the stake top of pile foundation model 4
And steel loop 14 is welded at the 10cm of soil body upper surface.
Motor 10 is variable-speed motor, and motor 10 can realize different rotating speed and moment of torsion under the driving of frequency converter, with
The changes in demand of load is adapted to, bottom plate 13 is the rectangular steel plates with bolt installing port；Motor 10 passes through bolt and the phase of bottom plate 13
Even, the rotating shaft side of motor 10 placement wheel disc 11, wheel disc 11 are provided with threaded post 12, and threaded post 12 and spring 9 pass through seizing wire
It is connected.
Wheel disc 11 is the circular steel plate with multiple bolts hole, and each bolt mouth is different apart from the circle center distance of wheel disc 11, spiral shell
Line post 12 is the screwed cylindrical steel rods in end, and threaded post 12 can be installed on the different bolt mouth of wheel disc 11 by twist-on
On.
Steel loop 14 is welded with the round steel pipe of 8 connection rings, the company for pile foundation model 4 and steel wire rope for exterior circumference
Connect；The round steel pipe internal diameter of steel loop 14 is identical with the diameter of pile foundation model 4, and accumulation of energy point is taken between steel loop 14 and pile foundation model 4
The mode of weldering is attached.
Experimental procedure is as follows：
As shown in Figure 2 and Figure 3, during unidirectional horizontal cyclic loading, steel wire rope one end bypasses fixed pulley 3, is sensed by pressure
Device 7 is connected with the top steel loop 14 of pile foundation model 4, and the steel wire rope other end passes through spring 9 and the phase of threaded post 12 on wheel disc 11
Connection；Require different according to finder charge, regulation steel wire rope is fixed on the position of threaded post 12, starts motor 10, and pressure passes
Sensor 7 shows that load is cyclic load size, by the foil gauge 6 of collector and pile foundation model 4, pull pressure sensor 7,
Displacement transducer 5 connects, and is connected with computer, you can the carrying of pile foundation model 4 becomes during recording unidirectional horizontal cyclic loading
Graphic data.
As shown in Figure 4, Figure 5, during two-way horizontal CYCLIC LOADING, a spring 9 need to separately be added, the one end of spring 9 is connected to pile foundation
Plinth steel loop 14, one end joint test case 1；Steel wire rope one end bypasses fixed pulley 3, passes through pull pressure sensor 7 and pile foundation model 4
Top steel loop 14 is connected, and the steel wire rope other end is connected by spring 9 with the threaded post 12 on wheel disc 11；Lotus is tested according to experiment
Carry and require different, it is also different that steel wire rope is fixed on the position of threaded post 12, starts motor 10, pull pressure sensor 7 shows that load is
For cyclic load size, connected by foil gauge 6, pull pressure sensor 7, the displacement transducer 5 of collector and pile foundation model 4
Connect, and be connected with computer, you can the load metamorphism data of pile foundation model 4 during record two-way horizontal CYCLIC LOADING.
As shown in fig. 6, during vertical CYCLIC LOADING, the steel wire rope one end on the right side of spring 9 and the phase of threaded post 12 on wheel disc 11
Connection, other end seizing wire bypass fixed pulley 3, are vertically connected with counterweight load bar 8 by pull pressure sensor 7；According to
Design cycle amplitude a certain size counterweight of counterweight on counterweight load bar 8, then adjusting wheel disc 11 makes pull pressure sensor 7
Registration and counterweight are identical with the weight of counterweight load bar 9, and it is zero that at this moment pile foundation model top loading, which carries, then sets loading frequency, opens
The weight of dynamic motor 10, counterweight and counterweight load bar 8 is the cyclic load amplitude on pile foundation model top, during experiment, by adopting
Storage is connected with foil gauge 6, pull pressure sensor 7, the displacement transducer 5 of pile foundation model 4, and is connected with computer, you can
Record the load metamorphism data of pile foundation model 4 during vertical CYCLIC LOADING.
As shown in Figure 7, Figure 8, when vertically being loaded with the loading of unidirectional horizontal cyclic or multidirectional horizontal cyclic, specific requirement combines
Three sets of unidirectional horizontal cyclic loading, two-way horizontal CYCLIC LOADING, vertical levels CYCLIC LOADING CYCLIC LOADING devices are according to angle beta (β
For the angle of wheel disc and the line of pile foundation on the motor of both sides, and 0 °<β<180 °) combination placement.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (5)
1. a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction, it is characterised in that including unidirectional horizontal cyclic
Loading, two-way horizontal CYCLIC LOADING, vertical CYCLIC LOADING, vertically loaded with the loading of unidirectional horizontal cyclic, multidirectional horizontal cyclic, its
Middle loading device is by chamber (1), drain bar (2), fixed pulley (3), pile foundation model (4), displacement transducer (5), foil gauge
(6), pull pressure sensor (7), counterweight load bar (8), spring (9), motor (10), wheel disc (11), threaded post (12), bottom plate
(13), steel loop (14) forms；
Chamber (1) is the uncovered cuboid by angle steel reinforced, and (1) four inwall of chamber sets drain bar (2), drain bar
(2) water penetration plank is used, the inwall lower end of chamber (1) is provided with osculum, the soil body used in experiment is loaded in chamber (1)；
Fixed pulley (3) is high-strength alloy by support frame fixed position, fixed pulley (3) material；
Spring (9) both ends respectively connect a seizing wire, and one end seizing wire is directly connected with threaded post (12), the thin steel of the other end
Cord bypasses fixed pulley (3), by the upper horizontal of pull pressure sensor (7) and pile foundation model (4) or is vertically connected；
Pile foundation model (4) is partially embedded in the soil body used in experiment, and pile foundation model (4), which is located on the pile lining of soil body part, to be glued
Foil gauge (6) is posted, displacement transducer (5) is provided with soil body upper surface, for ease of connecting seizing wire, pile foundation model (4)
Stake top and at the 10cm of soil body upper surface weld steel loop (14)；
Motor (10) is variable-speed motor, and motor (10) can realize different rotating speed and moment of torsion under the driving of frequency converter, with
The changes in demand of load is adapted to, bottom plate (13) is the rectangular steel plates with bolt installing port；Motor (10) passes through bolt and bottom plate
(13) it is connected, motor (10) rotating shaft side placement wheel disc (11), wheel disc (11) is provided with threaded post (12), threaded post (12) and bullet
Spring (9) is connected by seizing wire；
Wheel disc (11) is the circular steel plate with multiple bolts hole, and each bolt mouth is different apart from wheel disc (11) circle center distance, spiral shell
Line post (12) is the screwed cylindrical steel rods in end, and threaded post (12) can be installed on the different spiral shell of wheel disc (11) by twist-on
On bolt mouth；
Steel loop (14) is welded with the round steel pipe of 8 connection rings, the company for pile foundation model (4) and steel wire rope for exterior circumference
Connect；Steel loop (14) round steel pipe internal diameter is identical with pile foundation model (4) diameter, is adopted between steel loop (14) and pile foundation model (4)
The mode of accumulation of energy spot welding is taken to be attached.
2. a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction according to claim 1, its feature exist
In when unidirectional horizontal cyclic loads, steel wire rope one end bypasses fixed pulley (3), passes through pull pressure sensor (7) and pile foundation model
(4) top steel loop (14) is connected, and the steel wire rope other end is connected by spring (9) with the threaded post (12) on wheel disc (11)；
Require different according to finder charge, regulation steel wire rope is fixed on the position of threaded post (12), starts motor (10), pressure sensing
Device (7) shows that load is cyclic load size, is sensed by the foil gauge (6) of collector and pile foundation model (4), pressure
Device (7), displacement transducer (5) connection, and be connected with computer, you can record pile foundation model during unidirectional horizontal cyclic loading
(4) load metamorphism data.
3. a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction according to claim 1, its feature exist
, need to separately plus a spring (9) when, two-way horizontal CYCLIC LOADING, spring (9) one end is connected to pile foundation steel loop (14), one end
Joint test case (1)；Steel wire rope one end bypasses fixed pulley (3), at the top of pull pressure sensor (7) and pile foundation model (4)
Steel loop (14) is connected, and the steel wire rope other end is connected by spring (9) with the threaded post (12) on wheel disc (11)；According to experiment
Load requirement difference is tested, it is also different that steel wire rope is fixed on threaded post (12) position, starts motor (10), pull pressure sensor (7)
Load is cyclic load size, passes through the foil gauge (6) of collector and pile foundation model (4), pull pressure sensor (7), position
Displacement sensor (5) connects, and is connected with computer, you can pile foundation model (4) carries during record two-way horizontal CYCLIC LOADING
Deformation data.
4. a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction according to claim 1, its feature exist
When, vertical CYCLIC LOADING, steel wire rope one end on the right side of spring (9) is connected with the threaded post (12) on wheel disc (11), another
End seizing wire bypasses fixed pulley (3), is vertically connected with counterweight load bar (8) by pull pressure sensor (7)；According to design
Amplitude a certain size counterweight of counterweight on counterweight load bar (8) is circulated, then adjusting wheel disc (11) makes pull pressure sensor (7)
Registration and counterweight it is identical with counterweight load bar (9) weight, at this moment pile foundation model top loading carry be zero, then set loading frequency
Rate, starts motor (10), and the weight of counterweight and counterweight load bar (8) is the cyclic load amplitude on pile foundation model top, experiment
When, it is connected by collector with foil gauge (6), pull pressure sensor (7), the displacement transducer (5) of pile foundation model (4), and
It is connected with computer, you can record pile foundation model (4) load metamorphism data during vertical CYCLIC LOADING.
5. a kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction according to claim 1, its feature exist
In, vertically with unidirectional horizontal cyclic loading or multidirectional horizontal cyclic load, specific requirement combine unidirectional horizontal cyclic loading, it is two-way
(β is wheel disc and stake on the motor of both sides according to angle beta for three sets of horizontal cyclic loading, vertical levels CYCLIC LOADING CYCLIC LOADING devices
The angle of the line on basis, and 0 °<β<180 °) combination placement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976328.0A CN107630477A (en) | 2017-10-19 | 2017-10-19 | A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976328.0A CN107630477A (en) | 2017-10-19 | 2017-10-19 | A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107630477A true CN107630477A (en) | 2018-01-26 |
Family
ID=61104809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710976328.0A Pending CN107630477A (en) | 2017-10-19 | 2017-10-19 | A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630477A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335373A (en) * | 2020-04-15 | 2020-06-26 | 中国石油大学(华东) | A cyclic load loading test device for storage tank pile foundation settlement test |
| CN111441397A (en) * | 2020-04-15 | 2020-07-24 | 中国石油大学(华东) | Vertical cyclic load loading test device for oil tank pile foundation settlement test |
| CN114635456A (en) * | 2022-04-24 | 2022-06-17 | 江苏道达风电设备科技有限公司 | Composite cylinder type foundation anti-overturning model based on site and test method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631519A (en) * | 2015-01-13 | 2015-05-20 | 河海大学 | Pile foundation bearing characteristic model test device and method under complicated load effect |
| CN105887946A (en) * | 2016-06-17 | 2016-08-24 | 同济大学 | Indoor experiment device of combined loading of model pile |
| CN205894123U (en) * | 2016-07-26 | 2017-01-18 | 浙江大学 | A multi freedom cyclic loading device for indoor experimental study of marine wind turbine foundation |
| CN107090859A (en) * | 2017-04-28 | 2017-08-25 | 浙江科技学院 | A kind of method of testing of the multidirectional horizontal bearing capacity of single pile under compound load action |
-
2017
- 2017-10-19 CN CN201710976328.0A patent/CN107630477A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631519A (en) * | 2015-01-13 | 2015-05-20 | 河海大学 | Pile foundation bearing characteristic model test device and method under complicated load effect |
| CN105887946A (en) * | 2016-06-17 | 2016-08-24 | 同济大学 | Indoor experiment device of combined loading of model pile |
| CN205894123U (en) * | 2016-07-26 | 2017-01-18 | 浙江大学 | A multi freedom cyclic loading device for indoor experimental study of marine wind turbine foundation |
| CN107090859A (en) * | 2017-04-28 | 2017-08-25 | 浙江科技学院 | A kind of method of testing of the multidirectional horizontal bearing capacity of single pile under compound load action |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335373A (en) * | 2020-04-15 | 2020-06-26 | 中国石油大学(华东) | A cyclic load loading test device for storage tank pile foundation settlement test |
| CN111441397A (en) * | 2020-04-15 | 2020-07-24 | 中国石油大学(华东) | Vertical cyclic load loading test device for oil tank pile foundation settlement test |
| CN114635456A (en) * | 2022-04-24 | 2022-06-17 | 江苏道达风电设备科技有限公司 | Composite cylinder type foundation anti-overturning model based on site and test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107299643B (en) | Steel lattice column combined type tower crane foundation structure in foundation pit and construction method | |
| JP5745688B2 (en) | Floating wind power generation facility with energy storage equipment | |
| CN107761755A (en) | A kind of compound bucket foundation of offshore wind farm | |
| CN107630477A (en) | A kind of CYCLIC LOADING system for testing offshore foundation pile-soil interaction | |
| CN105862905B (en) | A kind of embedding rock single-pile foundation of offshore wind farm and its construction method | |
| CN105862907B (en) | Circular combined super-large diameter offshore wind farm single-pile foundation and its construction technology | |
| CN102720209B (en) | Telescopic damping device and offshore floating type fan foundation | |
| CN207662747U (en) | Test the CYCLIC LOADING system of pile-soil interaction power in foundation construction construction | |
| CN113818476A (en) | Foundation component for offshore wind power generation and construction method thereof | |
| CN202247928U (en) | Multi-pile gantry type marine wind turbine generator system base structure | |
| CN207598433U (en) | A kind of offshore wind farm crew base flushing monitoring system | |
| CN211646450U (en) | Offshore wind power single pile-wing plate-rockfill composite foundation | |
| CN201953582U (en) | Offshore wind turbine foundation with levelling structure | |
| CN205779502U (en) | A kind of marine wind electric field vertical axis aerogenerator arch (bridge) type supporting construction | |
| CN107201991A (en) | A kind of new marine windmill floating platform | |
| CN105588771B (en) | The vertical CYCLIC LOADING device of frequency conversion of Complicated Loads form can be applied | |
| CN208763050U (en) | Offshore wind turbine gravity caisson basis | |
| CN101871207B (en) | Offshore wind turbine bearing device | |
| CN205822228U (en) | A kind of offshore fan tower base structure | |
| CN207567801U (en) | A kind of compound bucket foundation of offshore wind farm | |
| CN204594686U (en) | A kind of H type blade of vertical axis wind turbine static construction test unit | |
| CN106480866A (en) | Partial equilibrium hydraulic hoisting ship elevator | |
| CN205776312U (en) | Circular combined super-large diameter offshore wind farm single-pile foundation | |
| CN109403318A (en) | A kind of offshore wind farm embedded type single-pile foundation and its construction method | |
| CN215715459U (en) | Offshore wind power assembled steel structure fan cushion cap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |