CN108222058B - Barrel-type foundation with adjustable buckling-restrained device and construction method thereof - Google Patents
Barrel-type foundation with adjustable buckling-restrained device and construction method thereof Download PDFInfo
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- CN108222058B CN108222058B CN201810151421.2A CN201810151421A CN108222058B CN 108222058 B CN108222058 B CN 108222058B CN 201810151421 A CN201810151421 A CN 201810151421A CN 108222058 B CN108222058 B CN 108222058B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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Abstract
The invention belongs to the technical field of offshore wind power foundations, and discloses a cylindrical foundation with an adjustable buckling-restrained device and a construction method thereof, wherein the adjustable buckling-restrained device is arranged in a space formed by a steel cylindrical skirt and a concrete top cover and consists of unit brackets arranged in each sub-cabin, and the unit brackets support the steel cylindrical skirt and the sub-cabin plate of the sub-cabin and are suspended by a steel wire rope of hoisting equipment to move up and down; in the sinking process of the cylindrical foundation under the action of the internal and external pressure difference, the automatic sinking monitoring system calculates the lowering length of the unit support according to the mud entering depth, and adjusts the position of the unit support in real time, so that the unit supports of all layers are uniformly distributed on the mud-not-entering part of the cylindrical foundation at intervals all the time. According to the invention, the adjustable buckling restrained device can be automatically adjusted according to the mud entering depth in the sinking process of the cylindrical foundation, so that proper rigidity is provided for the cylindrical skirt, buckling of the cylindrical skirt is effectively prevented, and buckling damage risk is reduced.
Description
Technical Field
The invention belongs to the technical field of offshore wind power foundations, and particularly relates to a cylindrical foundation with an adjustable buckling-restrained device and a construction method thereof.
Background
The offshore wind energy resource is rich, and has the advantages of good wind field flow state, no land occupation, high annual utilization time and the like, so that the offshore wind power development in recent years is very rapid. At present, the structural forms of the offshore wind power foundation comprise a gravity type foundation, a single pile foundation, a tripod foundation, a jacket foundation, a multi-pile bearing platform foundation, a cylindrical foundation, a floating foundation and the like. The cylindrical foundation is also called a suction anchor, and the structural weight is greatly reduced because the cylindrical foundation is simple and quick to install, so that the cylindrical foundation is widely applied to offshore wind power, various ocean platforms, single-point mooring, multi-point mooring, underwater manifold and other structures.
At present, the side wall and the dividing plate of the barrel type foundation are mostly of thin-wall steel plate structures, so that the barrel type foundation structure is lighter and the sinking work is easier to develop. However, because the thin-walled steel sheet has a relatively thin wall thickness, buckling instability is likely to occur under the action of internal and external pressure differences in the sinking process. When the cylindrical foundation is immersed in water, the cylindrical body is immersed into mud to a certain initial depth by means of dead weight to form a closed state of water in the cylindrical body, and then the pump valve system arranged at the top of the cylindrical foundation is utilized to pump out water in the cylindrical foundation, so that the water quantity pumped out in the same time is larger than the water quantity permeated from the bottom, an internal-external pressure difference is formed, and the cylindrical foundation is quickly immersed in a short time. Because the mud entering of the cylinder base is shallow at first, the suspended part above the mud surface is larger, and therefore, the cylinder wall is likely to be buckled and damaged under the action of the internal and external pressure difference. As penetration depth increases, buckling resistance increases, but as penetration depth increases, penetration resistance increases, and a greater pressure difference (suction force) is required to achieve penetration in place, and the wall of the barrel still risks buckling failure.
In order to improve the buckling resistance of the cylindrical foundation, stiffening ribs are usually arranged in design, but the existence of the stiffening ribs can cause the increase of the penetration resistance of the cylindrical foundation, and the risk of sinking of the cylindrical foundation is increased.
Disclosure of Invention
The invention aims to solve the technical problem that buckling damage is easy to occur when a barrel-shaped foundation is sunk, and provides a barrel-shaped foundation with an adjustable buckling-restrained device and a construction method thereof.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the cylinder foundation with the adjustable buckling restrained device comprises a steel cylinder skirt and a concrete top cover, wherein a space formed by the steel cylinder skirt and the concrete top cover is divided into a plurality of sub-cabins by a sub-cabin plate, the space formed by the steel cylinder skirt and the concrete top cover is internally provided with the adjustable buckling restrained device, the adjustable buckling restrained device is formed by a plurality of unit brackets respectively arranged in each sub-cabin, each unit bracket is formed by enclosing a frame body by a steel structure attached to the steel cylinder skirt and the sub-cabin plate in the sub-cabin, and the frame body is horizontally arranged in the sub-cabin, so that each unit bracket supports the steel cylinder skirt and the sub-cabin plate in the sub-cabin; the adjustable buckling restrained device is suspended by a steel wire rope of hoisting equipment to move up and down.
Preferably, the initial position and the final position of the adjustable buckling restrained device are embedded in the concrete top cover and are suspended by a steel wire rope of the hoisting equipment; the bottom of the concrete top cover is provided with a groove matched with the unit bracket, and the concrete top cover is provided with a preset hole for enabling a steel wire rope of the hoisting equipment to pass through.
Preferably, the steel wire rope of the hoisting equipment is connected with the adjustable buckling preventing device through a clamping ring provided with a self-unlocking device.
Preferably, the unit bracket of the adjustable buckling restrained device is provided with n layers, n=1 or 2 or 3 or 4 or 5; in the sinking process of the cylindrical foundation through the action of the internal and external pressure difference, the automatic sinking monitoring system of the cylindrical foundation is used for calculating the lowering length of each layer of unit support according to the mud entering depth, and controlling the lifting equipment to adjust the positions of each layer of unit support through a steel wire rope in real time, so that each layer of unit support of the adjustable buckling prevention device is uniformly distributed on the mud non-entering part of the cylindrical foundation at intervals all the time, namely, each layer of unit support is respectively positioned at 1/(n+1), 2/(n+1), 3/(n+1), … and n/(n+1) of the steel cylinder skirt from top to bottom.
The construction method of the cylinder foundation with the adjustable buckling restrained device comprises the following steps:
(1) The self weight of the barrel-shaped foundation sinks to form a closed state of the water body in the barrel; meanwhile, the adjustable buckling restrained device is positioned in a groove of the concrete top cover and is connected with a steel wire rope of the hoisting equipment through a clamping ring;
(2) When the self-weight sinking of the cylindrical foundation is finished, the automatic sinking monitoring system is used for controlling the obtained mud entering depth H 0 Calculating the lowering length of each layer of unit bracket in the adjustable buckling restrained device, and controlling the lifting equipment to automatically lower each layer of unit bracket into place according to the lowering length by using a steel wire rope connected with the adjustable buckling restrained device;
setting the height of the steel cylinder skirt as H, and setting the automatic lowering length of each layer of unit support to be Lm according to the number n of layers of unit supports in the adjustable buckling restrained deviceWherein m represents an mth layer, m=1, 2,3, …, n, lm=m (H-H) 0 ) (n+1), and enabling each layer of unit bracket in the adjustable buckling restrained device to be sequentially positioned at positions 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt which is not filled with mud from top to bottom;
(3) Drawing out water in the barrel-shaped foundation to form internal and external pressure difference, so that the barrel-shaped foundation continuously sinks; while the cylindrical foundation is sinking under the action of the internal-external pressure difference, an automatic sinking monitoring system is used for controlling the obtained mud entering depth H 1 Calculating the lowering length of each layer of unit support in the adjustable buckling restrained device in real time, and controlling the hoisting equipment to automatically move up each layer of unit support according to the lowering length by using a steel wire rope connected with the adjustable buckling restrained device in real time;
the automatically up-shifted drop length of each layer of unit stent is Lm ', where m represents the m-th layer, m=1, 2,3, …, n, lm' =m (H-H) 1 ) (n+1), and all the layer unit brackets in the adjustable buckling restrained device are always positioned at positions 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt which is not filled with mud from top to bottom in sequence;
(4) And when the sinking of the cylinder foundation is finished under the action of the internal and external pressure difference, the adjustable buckling-restrained device is positioned in the groove of the concrete top cover again.
After the adjustable buckling restrained device is located in the groove of the concrete top cover again, the connection between the steel wire rope and the adjustable buckling restrained device is automatically released through the automatic unlocking device of the clamping ring, and grouting is conducted on the preset hole of the concrete top cover.
The beneficial effects of the invention are as follows:
the invention provides a barrel-shaped foundation with an adjustable buckling restrained device and a construction method thereof, wherein the novel adjustable buckling restrained device is adopted, the position is automatically adjusted according to the mud entering depth in the sinking process of the barrel-shaped foundation, a certain rigidity is provided for a barrel wall and a cabin dividing plate, buckling of the barrel wall and the cabin dividing plate is effectively prevented, and the risk of buckling damage is reduced; the possibility of increased penetration resistance and improper sinking of the barrel-shaped foundation caused by the arrangement of stiffening ribs is avoided; meanwhile, the adjustable buckling restrained device fully utilizes the concrete top cover, and the initial position and the final position are embedded in the groove of the concrete top cover, so that other influences on sinking of the barrel type foundation can be avoided.
Drawings
FIG. 1 is a schematic perspective view of a cylinder foundation with an adjustable buckling restrained device;
FIG. 2 is a front view of a cartridge base with an adjustable buckling restrained apparatus provided by the present invention;
FIG. 3 is a schematic perspective view of an adjustable buckling restrained device and a deck according to the present invention;
fig. 4 is a bottom view of the concrete roof with the grooves of the present invention.
In the above figures: 1. the concrete anti-buckling device comprises a cylinder skirt, a concrete top cover, a cabin dividing plate, an adjustable anti-buckling device, a steel wire rope, a unit bracket and grooves, wherein the cylinder skirt, the concrete top cover, the cabin dividing plate, the adjustable anti-buckling device, the steel wire rope, the unit bracket and the grooves are arranged in sequence, and the concrete top cover is arranged between the cylinder skirt and the concrete top cover.
Detailed Description
For further understanding of the invention, the following examples are set forth to illustrate, together with the drawings, the detailed description of which follows:
as shown in fig. 1 to 3, the present embodiment discloses a cylinder foundation with an adjustable buckling restrained device, mainly comprising a steel cylinder skirt 1, a concrete top cover 2, a dividing plate 3 and an adjustable buckling restrained device 4.
The steel cylinder skirt 1 is of a round thin-wall steel structure with the diameter of 30m and the height of 10m, and the thickness of the skirt plate is 25mm; the concrete top cover 2 is fixedly connected to the top of the steel cylinder skirt 1, and the height is 2m. The space formed by the steel cylinder skirt 1 and the concrete top cover 2 is internally provided with a regular hexagon with an external radius of 7.5m and a dividing plate 3 extending from each vertex of the regular hexagon to the steel cylinder skirt 1, and the space is divided into seven dividing chambers which are arranged in a honeycomb mode by the dividing plate 3, and the thickness of the dividing plate 3 is 15mm.
The adjustable buckling restrained device 4 is positioned in a space formed by the steel cylinder skirt 1 and the concrete top cover 2 and is composed of seven unit brackets 6 which are respectively arranged in the sub-cabins, each unit bracket 6 is a frame body formed by common steel, a thin-wall steel structure, angle steel, T-shaped steel, I-shaped steel and the like, and the frame body is horizontally arranged in each sub-cabin, and the plane pattern enclosed by the frame body is the same as the horizontal section pattern of the sub-cabin. The unit bracket 6 is attached to the steel cylinder skirt 1 and the dividing plate 3 of the dividing chamber where the unit bracket is positioned so as to form a rigid support for the steel cylinder skirt 1 and the dividing plate 3, and meanwhile, the unit bracket 6 can be suspended by the steel wire rope 5 of the hoisting equipment to move up and down. In the embodiment, the height of the unit bracket 6 is 0.1-0.2 m, and the thickness is 10-60 mm.
As shown in fig. 4, the initial and final positions of the adjustable buckling restrained device 4 can be embedded in the concrete roof 2 and suspended by the steel wire rope 5 of the hoisting apparatus. The bottom of the concrete top cover 2 is provided with a groove 7 matched with the unit bracket 6, meanwhile, a preset hole is formed in the concrete top cover 2 upwards through the groove 7, the preset hole is used for penetrating a steel wire rope 5 of hoisting equipment, and after the steel wire rope 5 penetrates, the upper portion of the preset hole is subjected to sealing treatment so as to ensure the tightness in the sinking process. The steel wire rope 5 is connected with the adjustable buckling restrained device 4 through a clamping ring, and after the sinking of the barrel-shaped foundation is finished, the clamping ring can automatically release the connection with the adjustable buckling restrained device 4 through a self-unlocking device.
The unit support 6 of the adjustable buckling restrained device 4 can be provided with one layer or a plurality of layers, and the number of the unit supports is generally in the range of 1-5 layers.
When the self-weight sinking of the cylindrical foundation is finished, the pump valve system arranged at the top of the cylindrical foundation is utilized to pump out water in the cylindrical foundation to form internal and external pressure difference, so that the cylindrical foundation is quickly sunk in a short time. In the sinking process of the cylindrical foundation under the action of the internal and external pressure difference, the adjustable buckling restrained device 4 is suspended and sunk by hoisting equipment, so that 1-5 layers of unit brackets 6 are uniformly distributed on the mud-free part of the cylindrical skirt 1 at intervals all the time, and a certain rigidity is effectively provided for the steel cylindrical skirt 1 and the nacelle plate 3. The automatic sinking monitoring system of the barrel foundation calculates the lowering length of each layer of unit support 6 according to the mud entering depth, adjusts the position of each layer of unit support 6 in real time, and can also be manually finely adjusted.
The unit bracket 6 of the adjustable buckling restrained device 4 is always positioned at 1/2 of the depth of the steel cylinder skirt 1, when the 1 layer is arranged, each layer is always positioned at 1/3, 2/3 of the depth of the steel cylinder skirt 1 from top to bottom respectively when the 2 layer is arranged, each layer is always positioned at 1/4, 2/4, 3/4 of the depth of the steel cylinder skirt 1 from top to bottom respectively when the 3 layer is arranged, each layer is always positioned at 1/(n+1), 2/(n+1), 3/(n+1), …, n/(n+1) of the depth of the steel cylinder skirt 1 from top to bottom respectively when the 5 layer is arranged, and each layer is always positioned at 1/6, 2/6, 3/6, 4/6, 5/6 of the depth of the steel cylinder skirt 1 from top to bottom respectively when the 5 layer is arranged.
When the sinking of the cylinder foundation is finished under the action of the internal and external pressure difference, the unit brackets 6 of each layer of the adjustable buckling restrained device 4 are re-embedded into the concrete top cover 2.
The construction method of the cylindrical foundation with the adjustable buckling restrained device comprises the following steps:
(1) The initial position of the adjustable buckling restrained device 4 is positioned in a groove 7 of the concrete top cover 2, the adjustable buckling restrained device is connected with a steel wire rope 5 of hoisting equipment through a clamping ring, and after the steel wire rope 5 passes through a preset hole of the concrete top cover 2, the upper part of the preset hole is subjected to sealing treatment so as to ensure the tightness; when the cylindrical foundation is immersed in water, the cylindrical foundation is immersed in mud to an initial depth of 2m under the action of dead weight, so that a closed state of water in the cylinder is formed.
(2) When the self-weight sinking of the cylindrical foundation is finished, the automatic sinking monitoring system is used for controlling the obtained mud entering depth H 0 Calculating the lowering length of each layer of unit support 6 in the adjustable buckling restrained device 4, and controlling the hoisting equipment to automatically lower each layer of unit support 6 into place by pressing the lowering length of the steel wire rope 5 connected with the adjustable buckling restrained device 4;
the height of the steel cylinder skirt 1 is set as H, and according to the number of layers n of the unit brackets 6 in the adjustable buckling restrained device 4, the automatic descending length of each layer of the unit brackets 6 is Lm, wherein m represents an mth layer, m=1, 2,3, …, n, lm=m (H-H) 0 ) And/(n+1), so that each layer of unit bracket 6 in the adjustable buckling restrained device 4 is sequentially positioned at 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt 1 which is not filled with mud from top to bottom.
(3) Pumping out water in the cylindrical foundation by using a pump valve system arranged at the top of the cylindrical foundation to form internal and external pressure difference, so that the cylindrical foundation is quickly sunk in a short time; sinking the cylindrical foundation under the action of internal and external pressure differenceAt the same time, according to the obtained mud depth H by an automatic sinking monitoring system 1 The lowering length of each layer of unit brackets 6 in the adjustable buckling restrained device 4 is calculated in real time, and the hoisting equipment is controlled in real time to automatically move up each layer of unit brackets 6 according to the lowering length of the steel wire rope 5 connected with the adjustable buckling restrained device 4;
setting the height of the cylinder skirt as H, and according to the number of layers n of the unit brackets 6 in the adjustable buckling restrained device 4, the lowering length of each layer of the unit brackets 6 after automatic up-shifting is Lm ', wherein m represents the m-th layer, m=1, 2,3, …, n, lm' =m (H-H) 1 ) (n+1), so that each layer of unit bracket 6 in the adjustable buckling restrained device 4 is always positioned at positions 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt 1 which is not filled with mud from top to bottom in sequence;
the wire rope 5 of the hoisting device can be adjusted automatically and at the same time be fine-tuned manually.
(4) When the barrel foundation is submerged under the action of an internal-external pressure difference, the adjustable buckling restrained device 4 is re-embedded into the groove 7 of the concrete top cover 2, the connection with the adjustable buckling restrained device 4 is automatically released through an automatic unlocking device of a clamping ring at the bottom end of the steel wire rope 5, the sealing treatment on the upper part of a preset hole is removed, the steel wire rope 5 is retracted, and finally the preset hole of the concrete top cover 2 is grouted, so that the tightness of the concrete top cover is ensured.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many changes may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are to be construed as falling within the scope of the present invention.
Claims (4)
1. The cylinder foundation with the adjustable buckling restrained device comprises a steel cylinder skirt and a concrete top cover, wherein a space formed by the steel cylinder skirt and the concrete top cover is divided into a plurality of sub-cabins by a sub-cabin plate; the adjustable buckling restrained device is suspended by a steel wire rope of hoisting equipment to move up and down;
the initial position and the final position of the adjustable buckling restrained device are embedded in the concrete top cover and are suspended by a steel wire rope of the hoisting equipment; the bottom of the concrete top cover is provided with a groove matched with the unit bracket, and the concrete top cover is provided with a preset hole for enabling a steel wire rope of the hoisting equipment to pass through;
the unit bracket of the adjustable buckling restrained device is provided with n layers, wherein n=1 or 2 or 3 or 4 or 5; in the sinking process of the cylindrical foundation through the action of the internal and external pressure difference, the automatic sinking monitoring system of the cylindrical foundation is used for calculating the lowering length of each layer of unit support according to the mud entering depth, and controlling the lifting equipment to adjust the positions of each layer of unit support through a steel wire rope in real time, so that each layer of unit support of the adjustable buckling prevention device is uniformly distributed on the mud non-entering part of the cylindrical foundation at intervals all the time, namely, each layer of unit support is respectively positioned at 1/(n+1), 2/(n+1), 3/(n+1), … and n/(n+1) of the steel cylinder skirt from top to bottom.
2. The cylinder foundation with adjustable buckling restrained device according to claim 1, characterized in that the steel wire rope of the hoisting equipment is connected with the adjustable buckling restrained device through a snap ring provided with a self-unlocking device.
3. A method of constructing a tubular foundation with an adjustable buckling restrained device according to any of claims 1-2, characterized by the steps of:
(1) The self weight of the barrel-shaped foundation sinks to form a closed state of the water body in the barrel; meanwhile, the adjustable buckling restrained device is positioned in a groove of the concrete top cover and is connected with a steel wire rope of the hoisting equipment through a clamping ring;
(2) When the self-weight sinking of the cylindrical foundation is finished, the automatic sinking monitoring system is used for controlling the obtained mud entering depth H 0 Calculating the lowering length of each layer of unit bracket in the adjustable buckling restrained device, and controlling the lifting equipment to automatically lower each layer of unit bracket into place according to the lowering length by using a steel wire rope connected with the adjustable buckling restrained device;
setting the height of the steel cylinder skirt as H, and according to the number of layers n of the unit brackets in the adjustable buckling restrained device, automatically lowering the unit brackets of each layer to form a lowering length Lm, wherein m represents an mth layer, m=1, 2,3, …, n, lm=m (H-H) 0 ) (n+1), and enabling each layer of unit bracket in the adjustable buckling restrained device to be sequentially positioned at positions 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt which is not filled with mud from top to bottom;
(3) Drawing out water in the barrel-shaped foundation to form internal and external pressure difference, so that the barrel-shaped foundation continuously sinks; while the cylindrical foundation is sinking under the action of the internal-external pressure difference, an automatic sinking monitoring system is used for controlling the obtained mud entering depth H 1 Calculating the lowering length of each layer of unit support in the adjustable buckling restrained device in real time, and controlling the hoisting equipment to automatically move up each layer of unit support according to the lowering length by using a steel wire rope connected with the adjustable buckling restrained device in real time;
the automatically up-shifted drop length of each layer of unit stent is Lm ', where m represents the m-th layer, m=1, 2,3, …, n, lm' =m (H-H) 1 ) (n+1), and all the layer unit brackets in the adjustable buckling restrained device are always positioned at positions 1/(n+1), 2/(n+1), … and n/(n+1) of the depth of the steel cylinder skirt which is not filled with mud from top to bottom in sequence;
(4) And when the sinking of the cylinder foundation is finished under the action of the internal and external pressure difference, the adjustable buckling-restrained device is positioned in the groove of the concrete top cover again.
4. A method of constructing a tubular foundation with an adjustable buckling restrained device according to claim 3, wherein after the adjustable buckling restrained device is relocated in the groove of the concrete roof, the connection between the steel wire rope and the adjustable buckling restrained device is automatically released by the automatic unlocking device of the snap ring, and grouting is performed on the preset hole of the concrete roof.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810151421.2A CN108222058B (en) | 2018-02-14 | 2018-02-14 | Barrel-type foundation with adjustable buckling-restrained device and construction method thereof |
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| CN201810151421.2A CN108222058B (en) | 2018-02-14 | 2018-02-14 | Barrel-type foundation with adjustable buckling-restrained device and construction method thereof |
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| CN108589763B (en) * | 2018-07-02 | 2024-04-19 | 天津大学 | Barrel-type foundation buckling restrained structure |
| CN109372004A (en) * | 2018-09-27 | 2019-02-22 | 天津大学 | A kind of built-in more offshore wind power foundations |
| CN113970012A (en) * | 2021-11-01 | 2022-01-25 | 中海石油(中国)有限公司 | Fixing pin fixing method for underwater production manifold in steel cylinder under seabed mud surface |
| CN113970013A (en) * | 2021-11-01 | 2022-01-25 | 中海石油(中国)有限公司 | Method for fixing stay bar of underwater production manifold in steel cylinder under seabed mud surface |
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| CN1026618C (en) * | 1992-02-28 | 1994-11-16 | 渤海石油公司工程设计公司 | Foundation and method for floating of submerged piles owing to the change of constant displacement of air seal of foundation base |
| JPH11181756A (en) * | 1997-09-05 | 1999-07-06 | Mitsubishi Heavy Ind Ltd | Foundation work, and its installation method |
| JP3440792B2 (en) * | 1997-11-28 | 2003-08-25 | 株式会社大林組 | How to build an underwater foundation |
| ID26811A (en) * | 1998-04-02 | 2001-02-08 | Suction Pile Technology B V | SEA BUILDING. |
| FR2904336B1 (en) * | 2006-07-27 | 2008-09-26 | Technip France Sa | SUCCIONED BATTERY WITH LOW DEPTHS |
| CN103938650A (en) * | 2014-04-10 | 2014-07-23 | 天津大学 | Foundation of cellular subdivision structures |
| CN105298198B (en) * | 2015-11-19 | 2017-07-07 | 同济大学 | A kind of anti-buckling vibration absorber suitable for wind tower conical tower barrel structure |
| CN107542101B (en) * | 2017-09-28 | 2023-06-30 | 天津大学 | Construction method of offshore four-buoy-buoyancy tank combined foundation structure |
| CN208201908U (en) * | 2018-02-14 | 2018-12-07 | 天津大学 | A kind of bucket foundation with adjustable anti-buckling device |
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