CN110468817A - A kind of fixed offshore photovoltaic power generation platform structure and its construction method - Google Patents
A kind of fixed offshore photovoltaic power generation platform structure and its construction method Download PDFInfo
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- CN110468817A CN110468817A CN201910818042.9A CN201910818042A CN110468817A CN 110468817 A CN110468817 A CN 110468817A CN 201910818042 A CN201910818042 A CN 201910818042A CN 110468817 A CN110468817 A CN 110468817A
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- 238000010248 power generation Methods 0.000 title claims abstract description 31
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000009423 ventilation Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E02B17/02—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor placed by lowering the supporting construction to the bottom, e.g. with subsequent fixing thereto
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/18—Foundations formed by making use of caissons
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
-
- 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
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of fixed offshore photovoltaic power generation platform structure and its construction method, including platform truss, box foundation, pillar, negative pressure ventilation hole and haul float；The lower section of the platform truss is arranged in the box foundation；The pillar connects the platform truss and the box foundation；The pillar is hollow structure, and the bottom of the pillar is connected with the box foundation；The negative pressure ventilation hole is arranged in the top of the pillar and is connected with the pillar；The haul float setting is connected on the box foundation, and through connecting strand with the pillar.The present invention is due to using modularized design, make each platform structure can independent adult, and the connection between adjacent structure uses hinge-connection, to while guarantee structure preferable globality, the huge bending moment that platform truss will be born when greatly reducing extensive laying makes structure have the stronger ability for resisting environmental load.
Description
Technical field
The present invention relates to offshore structure and photovoltaic power generation structure technology, in particular to a kind of fixed offshore photovoltaic power generation is flat
Platform support construction and its construction method.
Background technique
In recent years, solar energy power generating is quickly grown as a kind of green clean reproducible energy.But due to it is land too
Positive energy photovoltaic power generation needs to occupy the scarcity of biggish land area and land resource, so that land solar photo-voltaic power generation station
Development by larger limitation, current most of land solar photo-voltaic power generation stations establish the desert in separate electrfic centre more
Area, and this greatly increases the electric cost of solar energy power generating, to also constrain the development of solar energy power generating.
Be directed to solar energy power generating land occupation resource it is more with apart from the farther away problem of electrfic centre, the sun waterborne
Energy photovoltaic power generation can well solve, in addition, solar energy power generating waterborne also has generating efficiency high, ecology is friendly, can
With the advantages such as aquaculture cooperative development.But it is insufficient that solar energy power generating waterborne is faced with the enclosed waters area for being suitable for develop
Problem will make solar energy power generating waterborne obtain large-scale development, and the solar energy power generating waterborne for developing maritime waters is
The only way which must be passed.
Marine solar energy power generating platform is due to being in ocean open water, compared at present in the waterborne of enclosed waters
Solar energy power generating platform, marine solar energy power generating platform are faced with more rugged environment load, design requirement
There are larger differences for natural and enclosed waters solar energy power generating platform waterborne, therefore, develop novel marine solar energy
Photovoltaic power generation platform is of great significance for the development of solar energy power generating cause.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, a kind of fixed offshore photovoltaic power generation platform is provided
Structure and its construction method, make its guarantee platform structure resist wind, wave, flow load ability simultaneously, having economy can
Row and convenience for construction, to help to realize photovoltaic power generation platform in the application of ocean open water.
The technical scheme adopted by the invention is that: a kind of fixed offshore photovoltaic power generation platform structure, comprising:
Platform truss；
The lower section of the platform truss is arranged in box foundation, the box foundation；
Pillar, the pillar connect the platform truss and the box foundation；The pillar is hollow structure, the branch
The bottom of column is connected with the box foundation；
Negative pressure ventilation hole, the negative pressure ventilation hole are arranged in the top of the pillar and are connected with the pillar；And
Float is hauled, the haul float is arranged on the box foundation, and is connected by connecting strand with the pillar
It connects.
Further, platform structure further includes the platform connector for connecting adjacent platforms support construction, described
The junction of the two neighboring platform truss is arranged in platform connector, and the platform connector is hinge, the hinge
Two sides pass through bolt respectively and are connected with two platform truss, so that two neighboring platform structural flexibility is connected as one
Body.
Further, the platform truss is the double-deck steel truss structure of square that anti-corrosive steel tube is welded.
Further, the pillar is the open column shape structure of the steel variable cross-section through preservative treatment, the pillar setting
There are four；The pillar includes the hollow round table that bottom face is open and the open circles being fixedly connected on above the hollow round table
Column；The negative pressure ventilation hole, the hollow cylinder bottom and the hollow round table connecting place is arranged in the upper bottom of the hollow cylinder
Side on be provided with the steel pipe as connecting strand and hauling rope mooring points, the axis of the steel pipe and the axis of the hollow cylinder
Vertically；The upper side of the pillar and the platform truss welding are integrated, go to the bottom and weld with the upper surface of the box foundation
It is connected in one, so that the pillar is played a supporting role the platform truss, while the channel as negative pressure ventilation.
Further, the box foundation is the steel thin-wall cuboid for the bottom opening being made of upper bottom surface and four side walls
Shape basis, the box foundation are internally provided with vertical subdivision plate, and the vertical subdivision plate will be empty inside the box foundation
Between be divided into nine identical cabins, be located at the box foundation corner location the cabin above be separately connected an institute
State pillar.
Further, the negative pressure ventilation hole is the steel pipe of both ends open.
Further, the haul float is steel thin-wall float, be provided on the haul float as connecting strand with
The bollard of traction rope mooring points.
Further, the connecting strand is wirerope, is fixed for the mooring between the haul float and the pillar.
It is of the present invention another solution is that a kind of above-mentioned fixed offshore photovoltaic power generation platform structure
Construction method, comprising the following steps:
Step 1, prefabricated above-mentioned fixed offshore photovoltaic power generation platform structure, the haul float are placed in the box
On the basis of, and be connected and fixed using the connecting strand with the pillar, meanwhile, seal the negative pressure ventilation hole；
Step 2, platform structure is placed in it is marine, by traction rope lie in the pillar and haul float mooring points on,
Platform structure is hauled to designated position；
Step 3, the negative pressure ventilation hole is opened, negative tube is taken out in connection, by the negative pressure ventilation hole reversely to institute
It states and inflates pressurization in box foundation, meanwhile, the connection of mooring points on the connecting strand and traction rope and the pillar is taken off, it will be described
It hauls float and pulls out range shared by platform structure；
Step 4, it is evacuated by the negative pressure ventilation hole, reduces air pressure in platform structure, make under platform structure
It is sink to specified altitude assignment；
Step 5, adjacent platforms support construction is connected by platform connector.
The beneficial effects of the present invention are:
A kind of fixed offshore photovoltaic power generation platform structure of the present invention makes each flat due to using modularized design
Platform support construction can independent adult, and the connection between adjacent structure uses hinge-connection, thus guaranteeing that structure is preferably whole
While property, the huge bending moment that platform truss will be born when greatly reducing extensive laying makes structure have stronger support
The ability of imperial environmental load.
Due to the construction technology using box foundation negative pressure sinking, tradition fixed type photovoltaic platform knot waterborne is avoided
Piling process needed for structure, shortens the offshore construction time, greatly reduces construction cost.
Due to structure can whole transportation by driving, the component production installation of structure can be placed on land progress, only at sea carry out
Sinking work, reduces Potential Working Time For Operation At Sea, reduces installation difficulty, improve production efficiency, and the use for hauling float makes
It obtains box foundation not needing to be designed very big according to buoyancy requirement needed for transportation by driving, to save construction material, and drag
It is reusable to transport float, more extra cost can't be generated.
This structure is easy to by ship, and platform truss structure walks about to personnel very friendly, this to be placed in this structure
The O&M activity of photovoltaic power generation platform is more convenient compared to current photovoltaic power generation platform waterborne, and safety is higher.
Detailed description of the invention
A kind of Fig. 1: fixed offshore photovoltaic power generation platform structural schematic diagram of the present invention；
Attached drawing mark: 1- platform truss, 2- platform connector, 3- pillar, 4- box foundation, 5- negative pressure ventilation hole, 6- are dragged
Transport float, 7- connecting strand.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
As shown in Fig. 1, a kind of fixed offshore photovoltaic power generation platform structure, including the connection of platform truss 1, platform
Device 2, pillar 3, box foundation 4, negative pressure ventilation hole 5, haul float 6 and connecting strand 7.
The platform truss 1 is the double-deck steel truss structure of square that anti-corrosive steel tube is welded, upper layer frame mainly by
Across " well " font main girder frame of pillar 3, lateral secondary beam rod piece and quadrilateral frame composition, lower layer's frame is by across pillar 3
" well " font main girder frame and quadrilateral frame composition, vertical joint steel pipe are distributed between two layers of girder and quadrilateral frame, spacing
Depending on load and structural requirement, for lateral secondary beam rod piece spacing depending on photovoltaic panel length, which constitutes photovoltaic hair
The support frame of level platform, for as the platform for placing photovoltaic panel assembly.
The platform connector 2 is hinge, is arranged on the four edges of the platform truss 1, and every side is arranged described in two
Platform connector 2；The cocurrent and parallel of two adjacent platform truss 1 is placed, then two adjacent platform truss 1 can pass through the phase
The set platform connector 2 is connected with each other on adjacent side, that is, the set platform connector 2 on the adjacent edge
Two sides pass through bolt respectively and connect with two platform truss 1, so that it is flexible to realize two adjacent platform structures
Connection.
The pillar 3 is the open column shape structure of the steel variable cross-section through preservative treatment, and the pillar 3 is provided with four；
The pillar 3 includes the hollow round table that bottom face is open and the hollow cylinder being fixedly connected on above the hollow round table, institute
The bottom diameter and upper bottom diameter for stating hollow round table should be calculated according to load situation, but should ensure that under the hollow round table
The one third that the box foundation 4 is not to be exceeded in bottom diameter is long, to guarantee the space requirement of the haul float 6, the sky
Heart rotary table is welded as a whole with the hollow cylinder；The upper bottom of the hollow cylinder be arranged the negative pressure ventilation hole 5 and with
The negative pressure ventilation hole 5 is connected, hollow cylinder bottom and axis of a weld on the side of the hollow round table connecting place with
The vertical steel pipe of hollow cylinder axis, institute's diameter of steel tube are the half of the body diameter of the pillar 3, form cross and hand over
Fork, the mooring points as connecting strand 7 and hauling rope；The pillar 3 is also used to connect the platform truss 1 and box foundation 4, described
The upper side of pillar 3 is welded as a whole with the platform truss 1, and the top of the pillar 3 is at least higher than the platform truss 1
The bottom of 1m, the pillar 3 are welded as a whole with the upper surface of the box foundation 4 and are connected with the box foundation 4, weldering
The geometric center that position is located at the 4 four corners cabin of box foundation is connect, the pillar 3 is made to play branch to the platform truss 1
Support effect, the depth of water and a-hundred-year the sum of fully developed sea when the height of the pillar 3 should be higher than that local sea area highest water level, together
The channel of Shi Zuowei negative pressure ventilation uses.
The lower section of the platform truss 1 is arranged in the box foundation 4；The box foundation 4 is by upper bottom surface and four sides
The steel thin-wall cuboid basis of the bottom opening of wall composition, bottom surface are square, and side length is 1 side length of platform truss
One third；The box foundation 4 is internally provided with vertical subdivision plate, and the vertical subdivision plate is by the box foundation 4
Inner space is divided into nine identical cabins, right respectively above the cabin for being located at 4 corner location of box foundation
The pillar 3 should be connected.
The negative pressure ventilation hole 5 is the steel pipe of both ends open, runs through the top surface steel plate of the pillar 3, and diameter should be applicable in
In the requirement used for taking out negative pressure pump, should be sealed with rubber stopper in non-extraction gas.
The haul float 6 is arranged on the box foundation 4, and is connected by connecting strand 7 with the pillar 3.Institute
Stating haul float 6 is steel thin-wall large size cuboid float, and the upper surface of the haul float 6 is welded with mooring close to four corners
Column, the mooring points as connecting strand 7 and traction rope.
The connecting strand 7 is wirerope, is fixed for the mooring between the haul float 6 and the pillar 3, specification
Depending on should being calculated by specific load.
The construction method of above-mentioned fixed offshore photovoltaic power generation platform structure, comprising the following steps:
Step 1, platform truss 1, platform connector 2, pillar 3, box foundation 4, negative pressure ventilation hole 5, haul float 6 are completed
With the standardized production of connecting strand 7, at harbour by platform truss 1, platform connector 2, pillar 3, box foundation 4, negative pressure ventilation
Hole 5 is prefabricated to be integrated, sealed negative-pressure aspirating hole 5, and haul float 6 is placed on box foundation 4, is attached with connecting strand 7
It is fixed；
Step 2, the platform structure being connected as one is placed in loop wheel machine marine, traction rope is lain in into the pillar 3
On the mooring points of haul float 6, platform structure is hauled to designated position using towboat；
Step 3, the negative pressure ventilation hole 5 is opened, negative tube is taken out in connection, by the negative pressure ventilation hole 5 reversely to
Inflate pressurization in the box foundation 4, meanwhile, the connection of mooring points on the connecting strand 7 and traction rope and the pillar 3 is taken off,
The haul float 6 is pulled out into range shared by platform structure；
Step 4, it is evacuated by the negative pressure ventilation hole 5, reduces air pressure in platform structure, make under platform structure
It is sink to specified altitude assignment；
Step 5, if there is the platform structure of placement on periphery, it should be bolted, connect platform
Device 2 is separately connected the corresponding platform structure in periphery.
Embodiment 1
Platform truss 1 middle girder frame steel pipe a length of 30m, diameter 0.45m, wall thickness 6mm, quadrilateral frame rod piece are a length of
30m, diameter 0.45m, wall thickness 6mm, secondary beam rod piece a length of 30m, diameter 0.3m, wall thickness 5mm, vertical joint steel pipe are long
For 0.9m, diameter 0.15m, wall thickness 4mm；Platform connector 2 is located at the one third and 2/3rds strong points on 1 side of platform truss,
Bearing diameter is 1m, long 2m；3 rotary table part of pillar diameter of going to the bottom is 2.6m, and upper bottom diameter is 1.5m, wall thickness 15mm, a height of
3m, column part diameter are 1.5m, wall thickness 15mm, a height of 20m；4 bottom surface side length of box foundation is 10m, a height of 3m, and wall thickness is
10mm；5 diameter of negative pressure ventilation hole is 0.8m, a height of 0.5m, wall thickness 8mm；It is 6.5m long to haul float 6, width 4.5m is a height of
4m, wall thickness 10mm；Connecting strand 7 a length of 10m, diameter 0.2m.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of, within these are all belonged to the scope of protection of the present invention.
Claims (9)
1. a kind of fixed offshore photovoltaic power generation platform structure characterized by comprising
Platform truss (1)；
Box foundation (4), the box foundation (4) are arranged in the lower section of the platform truss (1)；
Pillar (3), the pillar (3) connect the platform truss (1) and the box foundation (4)；The pillar (3) is hollow
The bottom of structure, the pillar (3) is connected with the box foundation (4)；
Negative pressure ventilation hole (5), the negative pressure ventilation hole (5) are arranged the top in the pillar (3) and are connected with the pillar (3)
It is logical；And
Haul float (6), the haul float (6) is arranged on the box foundation (4), and pass through connecting strand (7) with it is described
Pillar (3) is connected.
2. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that platform branch
Support structure further includes the platform connector (2) for connecting adjacent platforms support construction, and the platform connector (2) is arranged in phase
The junction of adjacent two platform truss (1), the platform connector (2) are hinge, and the two sides of the hinge pass through respectively
Bolt is connected with two platform truss (1), so that two neighboring platform structural flexibility is connected as one.
3. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that described flat
Platform truss (1) is the double-deck steel truss structure of square that anti-corrosive steel tube is welded.
4. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that the branch
Column (3) is the open column shape structure of the steel variable cross-section through preservative treatment, and the pillar (3) is provided with four；The pillar (3)
The hollow round table being open including bottom face and the hollow cylinder being fixedly connected on above the hollow round table；The hollow cylinder
Upper bottom the negative pressure ventilation hole (5) is set, the hollow cylinder bottom and be arranged on the side of the hollow round table connecting place
There is the steel pipe as connecting strand (7) and hauling rope mooring points, the axis of the steel pipe is vertical with the axis of the hollow cylinder；It is described
The upper side of pillar (3) and the platform truss (1) are welded as a whole, go to the bottom and weld with the upper surface of the box foundation (4)
It is connected in one, so that the pillar (3) is played a supporting role the platform truss (1), while the channel as negative pressure ventilation.
5. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that the case
Type basis (4) is the steel thin-wall cuboid basis for the bottom opening being made of upper bottom surface and four side walls, the box foundation
(4) be internally provided with vertical subdivision plate, the box foundation (4) inner space is divided into nine phases by the vertical subdivision plate
Same cabin is separately connected the pillar (3) above the cabin for being located at the box foundation (4) corner location.
6. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that described negative
Pressing aspirating hole (5) is the steel pipe of both ends open.
7. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that described to drag
Transporting float (6) is steel thin-wall float, is provided on haul float (6) and is as connecting strand (7) and traction rope mooring points
Ship column.
8. a kind of fixed offshore photovoltaic power generation platform structure according to claim 1, which is characterized in that the company
Connecing rope (7) is wirerope, is fixed for the mooring between haul float (6) and the pillar (3).
9. a kind of applying based on the described in any item fixed offshore photovoltaic power generation platform structures of the claims 1 to 8
Work method, which comprises the following steps:
Step 1, prefabricated fixed offshore photovoltaic power generation platform structure as claimed in any one of claims 1 to 8, it is described to drag
Fortune float (6) is placed on the box foundation (4), and is connected and fixed using the connecting strand (7) with the pillar (3), meanwhile,
Seal the negative pressure ventilation hole (5)；
Step 2, platform structure is placed in it is marine, by traction rope lie in the pillar (3) and haul float (6) mooring points
On, platform structure is hauled to designated position；
Step 3, the negative pressure ventilation hole (5) is opened, takes out negative tube in connection, by the negative pressure ventilation hole (5) reversely to
Inflate pressurization in the box foundation (4), meanwhile, take off mooring points on the connecting strand (7) and traction rope and the pillar (3)
The haul float (6) is pulled out range shared by platform structure by connection；
Step 4, it is evacuated by the negative pressure ventilation hole (5), reduces air pressure in platform structure, platform structure is made to sink
To specified altitude assignment；
Step 5, adjacent platforms support construction is connected by platform connector (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910818042.9A CN110468817A (en) | 2019-08-30 | 2019-08-30 | A kind of fixed offshore photovoltaic power generation platform structure and its construction method |
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| CN201910818042.9A CN110468817A (en) | 2019-08-30 | 2019-08-30 | A kind of fixed offshore photovoltaic power generation platform structure and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635447A (en) * | 2022-04-07 | 2022-06-17 | 天津大学 | Offshore photovoltaic fixed multi-cylinder foundation structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114635447A (en) * | 2022-04-07 | 2022-06-17 | 天津大学 | Offshore photovoltaic fixed multi-cylinder foundation structure and construction method thereof |
| CN114635447B (en) * | 2022-04-07 | 2024-04-09 | 天津大学 | Marine photovoltaic fixed multi-cylinder foundation structure and construction method thereof |
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