CN202390845U - Annular negative pressure foundation cofferdam - Google Patents
Annular negative pressure foundation cofferdam Download PDFInfo
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- CN202390845U CN202390845U CN 201120491795 CN201120491795U CN202390845U CN 202390845 U CN202390845 U CN 202390845U CN 201120491795 CN201120491795 CN 201120491795 CN 201120491795 U CN201120491795 U CN 201120491795U CN 202390845 U CN202390845 U CN 202390845U
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- cofferdam
- pressure foundation
- negative
- negative pressure
- annular negative
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Abstract
The utility model relates to an annular negative pressure foundation cofferdam, and aims to provide an annular negative pressure foundation cofferdam which is small in investment and easy to construct and is safe and convenient. According to the technical scheme, the annular negative pressure foundation cofferdam is characterized in that a closed circular ring structure is formed by connecting at least two negative pressure foundation structures through connection pieces end to end; and the single negative pressure foundation structure is a circular arc of the circular ring structure, which is spliced by at least one barrel foundation. The annular negative pressure foundation cofferdam is suitable for temporary cofferdam body structures required by foundation construction of maritime wind turbine generators.
Description
Technical field
The utility model relates to a kind of annular negative-pressure foundation cofferdam.Be applicable to the interim enclosing body structure that the foundation construction of offshore wind farm unit is required.
Background technology
In China, the Oversea wind power generation industry belongs to an emerging industry.After 2000,, domestic wind-power electricity generation industry is developed rapidly because country encourages the development and utilization of regenerative resource.Because key technology area waits ripe cause, the offshore wind farm engineering of implementing at present seldom, the engineering design and construction experience is all not enough.
At present at sea in the wind-powered electricity generation unit foundation construction process; On the working procedure of condition setting cofferdam of creating dry work for foundation construction as interim enclosing body; Take typing steel sheet-pile cofferdam commonly used in barged-in fill cofferdam or the bridge engineering more; Not only the investment of self temporary works is big for above cofferdam form, and the duration is longer, and has bigger environmental problem; Need carry out reinforcing work to the cofferdam for the influence of resisting abominable marine environment simultaneously, for the construction of major project and the dismounting work in later stage bring inconvenience than the large-engineering amount.
In addition, need before major project, adopt special cofferdam construction ship to construct in advance, and be equipped with various auxiliary ships, the Description of Ship that relates to is many, and the construction period is long, has increased the investment of wind-powered electricity generation engineering.
Summary of the invention
The technical problem that the utility model will solve is: based on the problem that needs in the offshore wind turbine foundation construction to solve, and take into full account the ambient conditions in the coastal marine site of China, a kind of annular negative-pressure foundation cofferdam of investing little, easy construction, safe ready is provided.
The technical scheme that the utility model adopted is: a kind of annular negative-pressure foundation cofferdam; It is characterized in that: said cofferdam is connected to form the cirque structure of a sealing by two negative-pressure foundation structures through connector at least from beginning to end, and single negative-pressure foundation structure is spliced into one section circular arc of said cirque structure at least by a bucket base.
Each barrel base is the identical circular arc steel plate tube of radius, and the bottom of steel plate tube is uncovered, and the top is provided with air vent device, and steel plate tube inside is equipped with air bag and is communicated with air vent device.
The width of said bucket base is 1m, and ring radius is 9 meters in it.
Said air bag is quality softness and the high rubberized fabric of tensile strength, and volume ratio bucket base cavity volume is smaller.
The beneficial effect of the utility model is: the critical piece in (1) cofferdam is the negative-pressure foundation structure; The negative-pressure foundation technology can guarantee carrying out smoothly of this novel negative pressure basic constructional design and construction as design and construction technology ripe in the haulage device in the offshore oil platform recovery process.(2) the required materials such as steel plate of negative-pressure foundation structure belong to conventional goods and materials, and ripe roll bending technology can be made large-sized foundation structure, and the abundant maturation with construction technology of material goods and materials can guarantee the making of each gauge size negative-pressure foundation.(3) the negative-pressure foundation structure is the chief component in interim cofferdam; Simultaneously also can utilize negative-pressure foundation self spatial volume big; The characteristics that buoyancy is big; The time directly place it on the sea in transportation and to haul, the horsepower grade that has reduced the transportation ship has also reduced be the transportation ship of its configuration simultaneously, makes its shallow water along the coast that can can't arrive at conventional ship and to take advantage of tide entering intertidal zone regional.(4) a few negative-pressure foundation structure just can be combined to form an interim cofferdam, and the construction works amount is little, and the time is short.(5) in the negative-pressure foundation structure air bag is set, promptly can increases the buoyancy in the basic haul process, can inwardly inflate the formation malleation simultaneously, reduce the basis and play the resistance in the floating process.(6) adopt the connector of moulding to connect and the ring-like cofferdam of fixing formation between each negative-pressure foundation structure, simple aspect reduces the engineering time.(7) each negative-pressure foundation structure can reuse to next place, cofferdam after remove in the cofferdam, has reduced the loss of temporary services.
Has short advantage of cheapness, easy construction, construction period in addition.
Description of drawings
Fig. 1 is the vertical view of the utility model embodiment.
Fig. 2 is the vertical view of negative-pressure foundation structure among Fig. 1.
Fig. 3 is the sectional view of negative-pressure foundation structure among Fig. 2.
The specific embodiment
As shown in Figure 1, present embodiment annular negative-pressure foundation cofferdam is connected to form the cirque structure of a sealing through connector 4 head and the tail by the negative-pressure foundation structure of four 1/4 circular arcs.Said negative-pressure foundation structure is spliced by three identical arc bucket bases 1, and bucket base 1 is the only curved plate tube of the uncovered 1-1 in bottom, and steel plate tube top is provided with air vent device 2, and steel plate tube inside is equipped with air bag 3 and this air bag is communicated with top air vent device 2.
Wherein air bag 3 is processed for quality softness and the high rubber dry goods material of tensile strength, and volume ratio bucket base 1 cavity volume is smaller, and air vent device 2 is used for bleeding or inflating to air bag 3.The width of this example bucket base 1 is 1 meter, and interior ring radius is 9 meters, and is highly general as long as a little more than planning to build the sea water advanced of place, cofferdam, be located at about 10 meters according to the practical experience height.
Present embodiment annular negative-pressure foundation cofferdam practical implementation method is following:
A, at the surface facility bucket base 1 that completes;
B, wait to complete after, inflate through the air bag 3 of air vent device 2 in each barrel base 1, rely on the big characteristics of himself buoyancy, directly bucket base 1 is placed on the sea and adopts little other cargo ship of level only to be transported to plan to build the place, cofferdam;
After c, bucket base 1 are transported to the appointed place, select depth condition to locate for planning to build the cofferdam less than the position of bucket base 1 height; Carry out the seat basic skill or training preface of negative-pressure foundation structure then; At first pass through the gas in the air vent device 2 extraction air bags 3, the draught head inside and outside the formation bucket basic 1, bucket basic 1 sinks one by one by a circular arc of setting and is pressed in the mud; Form negative-pressure foundation structure (three bucket bases are formed a negative-pressure foundation structure); After four negative-pressure foundation structure seat bottom application workers finish, carry out connector 4 constructions then, the negative-pressure foundation structure is tightly connected through connector 4 head and the tail each other; Form the cirque structure of a sealing and sealing, look the field condition decision between adjacent two bucket bases 1 and whether need connect and seal;
After d, the installation of negative-pressure foundation structure, form annular negative-pressure foundation cofferdam, extract the central seawater in cofferdam and form the local ground condition of doing, just can be in dried ground, part to blower foundation 5 constructions;
E, when the function completion need to be removed in the cofferdam; At first to water-filling in the cofferdam; Remove the connector 4 between each negative-pressure foundation structure then; Inflate through the air bag 3 of air vent device 2 in each barrel base 1 and to make the negative-pressure foundation structure extract the mud face, utilize previous transportation ship haul negative-pressure foundation structure to next cofferdam construction place.
Claims (4)
1. annular negative-pressure foundation cofferdam; It is characterized in that: said cofferdam is connected to form the cirque structure of a sealing by two negative-pressure foundation structures through connector (4) head and the tail at least, and single negative-pressure foundation structure is spliced into one section circular arc of said cirque structure at least by a bucket base (1).
2. annular negative-pressure foundation according to claim 1 cofferdam; It is characterized in that: each barrel base (1) is the identical circular arc steel plate tube of radius; The bottom of steel plate tube is uncovered (1-1); The top is provided with air vent device (2), and steel plate tube inside is equipped with air bag (3) and is communicated with air vent device (2).
3. annular negative-pressure foundation according to claim 2 cofferdam is characterized in that: the width of said bucket base (1) is 1m, and ring radius is 9 meters in it.
4. annular negative-pressure foundation according to claim 2 cofferdam is characterized in that: said air bag (3) is quality softness and the high rubberized fabric of tensile strength, and volume ratio bucket base (1) cavity volume is smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120491795 CN202390845U (en) | 2011-12-01 | 2011-12-01 | Annular negative pressure foundation cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120491795 CN202390845U (en) | 2011-12-01 | 2011-12-01 | Annular negative pressure foundation cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202390845U true CN202390845U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120491795 Expired - Fee Related CN202390845U (en) | 2011-12-01 | 2011-12-01 | Annular negative pressure foundation cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202390845U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425182A (en) * | 2011-12-01 | 2012-04-25 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
-
2011
- 2011-12-01 CN CN 201120491795 patent/CN202390845U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425182A (en) * | 2011-12-01 | 2012-04-25 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
| CN102425182B (en) * | 2011-12-01 | 2014-02-12 | 中国水电顾问集团华东勘测设计研究院 | Annular negative pressure foundation cofferdam and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |