CN103103972A - Prefabricate type nautical fixed platform and installing method - Google Patents
Prefabricate type nautical fixed platform and installing method Download PDFInfo
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- CN103103972A CN103103972A CN2013100468905A CN201310046890A CN103103972A CN 103103972 A CN103103972 A CN 103103972A CN 2013100468905 A CN2013100468905 A CN 2013100468905A CN 201310046890 A CN201310046890 A CN 201310046890A CN 103103972 A CN103103972 A CN 103103972A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
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Abstract
The invention discloses a prefabricate type nautical fixed platform and an installing method. The prefabricate type nautical fixed platform and the installing method comprises following steps: 1) a temporary locating step: atoll bulging rocks can be used as a fulcrum, and a winding machine can be used for dragging a platform main body to a construction preinstallion position in a high tide level. A low tide level and a method of injecting water into a ballasting cabin can be used for contacting the bottom of the main body to a surface of a foundation, and locating piles are used for temporarily fixing the main body on the foundation. 2) A sinking leveling step: length that each locating pile extends out of the bottom of the main body can be controlled, and positions and levelness of the bottom of the main body can be adjusted. 3) A sinking fixing step: gravels which are in a gravel cabin can be discharged through a gravel channel to fill gaps between the surface of foundation and the bottom of the main body. Fixing of the prefabricate type nautical fixed platform can be completed. The prefabricate type nautical fixed platform and the installing method has the advantages of being stable in main body structure and low in manufacture cost. The function is easy to level. The prefabricate type nautical fixed platform and the installing method is high in planeness, accurate in fixing location and capable of being installed on the atolls or submerged rocks or sandy beaches. The prefabricate type nautical fixed platform is easy to construct and stable in fixing.
Description
Technical field
The present invention relates to a kind of offshore platform technology, especially relate to fixed offshore platform and the mounting method thereof that can be laid in fast on islands and reefs, submerged reef and sandy beach.
Background technology
Along with to constantly the carrying out of ocean exploitation, operating personnel and equipment need to be done long stop near off-lying sea or islands and reefs, therefore need to build fixed job platform or supply platform.Common job practices comprises two kinds, the first is chinampa platform or the caisson platform that sets in advance steel work, tow to operation place by towboat, the chinampa platform is fixed on the sea with ship anchor mooring or piling mode, the caisson platform sinks to the bottom with the half latent end mode of sitting, and then builds operation or the required superstructure of supply on the platform that surfaces.The chinampa platform of this steel work or the construction schedule of caisson platform are long, and investment is large, and the chinampa platform needs certain depth of water fixedly the time, can not directly be fixed on islands and reefs or sandy beach, and poor stability carries out the difficulty of construction that marine mooring or piling fixes high; And complicated operation at the bottom of the seat of caisson platform, the difficulty of construction of ground levelling is high.Another kind of job practices is to be transported to the construction plant with building required constructional materials and the equipment of job platform by tender, directly carry out at the scene foundation dredging and construct, then carry out concreting or steel work setting on ground, the construction of fulfil assignment platform or supply platform.This mode can cause irreversible destruction to the marine environment of job site, and the impact of work progress climate is larger, and the transportation of constructional materials is more difficult in addition, causes building cycle long, and cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of prefabricated fixed offshore platform of can fast construction, being fixedly installed fast.
Another object of the present invention is to provide a kind of mounting method of prefabricated fixed offshore platform.
Technical solution of the present invention is: a kind of prefabricated fixed offshore platform, comprise prefabricated main platform body, separate by bulkhead in described main body and be provided with several watertight compartments, ballast tank and gravel cabin, wherein ballast tank is positioned at the bottom of described main body, watertight compartment is positioned at above ballast tank, gravel bilge section is provided with the gravel passage that is interlinked to the outside with described main body, be respectively equipped with several positioners along described body peripheral edge, be respectively equipped with on each positioner and can extend downward the outer guide pile of described bottom part body.
The agent structure of platform can be made by prefabrication system, its inner space is separated into a plurality of ballast tanks, watertight compartment and gravel cabin with bulkhead, watertight compartment can be used for loading fresh water, fuel oil or equipment, ballast tank is hollow cavity before towing, can provide sail required buoyancy, during installation, can be to water filling in ballast tank, main body is sunk to the bottom, use as fixed platform.Be used for depositing the gravel that smooth filling ground is used in the gravel cabin, can be before towing load gravel in the gravel cabin, also can be when main body is installed load gravel again in the gravel cabin.Positioner is along the body peripheral edge setting, outside guide pile extends bottom part body and when inserting ground, can support main body is liftoff, keep the gap between bottom part body and ground, be used for filling the gravel levelling, when main body sank to the bottom, guide pile can also play the positioning and guiding effect, after the main platform body installation, guide pile can also play the effect of slide.Levelling ground fast, main platform body sinks to the bottom accurate positioning, and fast and easy is arranged on islands and reefs, submerged reef or sandy beach, easy construction, fixation.
Be provided with the preformed hole of some perforations on described main body, suction pile be set in preformed hole or suppress stake.Squeeze into suction pile or suppress stake in ground by preformed hole, main body more firmly is fixed on ground, especially be adapted at using on soft foundation.
Described positioner is provided with to be adjusted described guide pile bottom and extends the conditioning equipment of described bottom part body length.Adjust by conditioning equipment the height that guide pile extends bottom part body, play the effect of adjusting main body and ground gap, make main body remain level.
Described gravel passage in described bottom part body is broadening formation.Facilitate gravel to be scattered to periphery, increase the contact area of layer of gravel and bottom part body.
Described main body is reinforced concrete prefabricated structure.Moulding is fast, and the engineering time is short, low cost of manufacture.
Another technical solution of the present invention is: a kind of mounting method of prefabricated fixed offshore platform, 1), interim positioning step it comprises the following steps:: utilize islands and reefs projection reef as fulcrum, main platform body is towed to the construction predeterminated position by hoist engine when the high water mark, utilize low tide or the method for water filling in ballast tank, make bottom part body primary surface contiguously; By guide pile, main body is temporarily fixed on ground; 2), sink to the bottom the leveling step: control the length that each guide pile extends bottom part body, adjust position and levelness that main body is sat the end; 3), sink to the bottom fixing step: the gravel in the gravel cabin is discharged by the gravel passage, fill space between foundation surface and bottom part body, complete the fixing of prefabricated fixed offshore platform.
main platform body is towed on the construction predeterminated position, first water filling in the ballast tank, make its bottom part body primary surface contiguously, then adjust by positioner the length that each guide pile extends, make main body maintenance level, and be adjusted on suitable position, can there be the gap in subregion between foundation surface and bottom part body at this moment, open the gravel hatch door on the relevant position, gravel is discharged along the gravel passage, fill the space between foundation surface and bottom part body, realize the levelling of ground, simultaneously with stable being supported on foundation surface of main platform body, realized fixing fast.In construction, levelling ground fast, main platform body sinks to the bottom accurate positioning, conveniently is arranged on islands and reefs, submerged reef or sandy beach easy construction, fixation.
In sinking to the bottom fixing step, also comprise the step that layer of gravel is flattened by vibration or local explosion method.Play the effect of closely knit ground, stability fundamental position.
In sinking to the bottom fixing step, also comprise in preformed hole suction pile being set or suppressing the step that stake is fixed.By suction pile being set or suppressing stake, main body more firmly is fixed on ground, the environment that is applicable to construct on soft foundation.
Before described interim positioning step, also comprise the step with coral sand pretreatment ground.When the foundation surface planeness is relatively poor, with coral sand pretreatment ground, adjust the planeness of foundation surface, facilitate the steadily fixing of main platform body.
Before described interim positioning step, also comprise the step with the accurate Ground Treatment of blast mode.When the ground bearing capacity is weak, by the blast mode, ground is carried out closely knitly, be conducive to the fixing stability of main platform body.
Advantage of the present invention is: agent structure is firm, low cost of manufacture, and the ground levelling is easy, and planeness is high, sinks to the bottom stationary positioned accurate, and fast and easy is arranged on islands and reefs, submerged reef or sandy beach, and construction is easy, fixation.
Description of drawings
Accompanying drawing 1 is the structural representation of the embodiment of the present invention;
Accompanying drawing 2 be in Fig. 1 A-A to sectional view;
Accompanying drawing 3 be in Fig. 1 B-B to sectional view;
Accompanying drawing 4 is the enlarged drawing of C section in Fig. 2;
Accompanying drawing 5 is the fixed form schematic diagram of the embodiment of the present invention;
1, main body, 2, bulkhead, 3, ballast tank, 4, watertight compartment, 5, the gravel cabin, 6, the gravel passage, 7, stake hole, 8, guide pile, 9, fixed leg, 10, binding clasp, 11, pulley, 12, wirerope, 13, inlet valve, 14, gravel, 15, ground, 16, preformed hole, 17, connecting portion, 18, suction pile.
The specific embodiment
Embodiment:
consult Fig. 1-4, be a kind of prefabricated fixed offshore platform, comprise prefabricated main platform body 1, separate by bulkhead 2 in main body 1 and be provided with several watertight compartments 4, ballast tank 3 and gravel cabin 5 and preformed hole 16, wherein ballast tank 3 is positioned at the bottom of main body 1, watertight compartment 4 is positioned at the top of ballast tank 3, 5 bottoms, gravel cabin are provided with the gravel passage 6 that is broadening formation that is interlinked to the outside with main body 1, be respectively equipped with several positioners along main body 1 periphery, comprise on each positioner that the guide pile 8 and the capable of regulating guide pile 8 that may extend to outside main body 1 bottom extend the conditioning equipment of main body 1 bottom lengths, this conditioning equipment comprises the stake hole 7 that is arranged on main body 1, pulley 11, wirerope 12 and be arranged on fixed leg 9 and binding clasp 10 on 7 both sides, the top platforms of a hole, guide pile 8 can be along stake hole 7 slips, pulley 11 is arranged on the top of guide pile 8, one end of wirerope 12 is connected on fixed leg 9, the other end is walked around pulley 11 and is connected on binding clasp 10, by adjusting binding clasp 10, control the relative length of wirerope 12, realize adjusting the length that guide pile 8 extends main body 1 bottom.Be provided with suction pile 18 in preformed hole 16 or suppress stake.
In the present embodiment, main body 1 is reinforced concrete prefabricated structure, can form bulkhead 2 by template, the concreting moulding.Also can use the steel work setting.Guide pile 8 can adopt piling bar, also can adopt other structure piles such as concrete pile.Be provided with connecting portion 17 in preformed hole 16, suction pile 18 is installed on connecting portion 17, suction pile 18 can downward opening insertion ground 15 in.
A kind of mounting method of prefabricated fixed offshore platform, it comprises the following steps:
1, carry out field geological investigation, ground 15 is done corresponding pretreatment, if ground 15 surface finishs are relatively poor, select coral sand to carry out pretreatment to ground 15 surfaces, if a little less than the carrying of ground 15, available explosive method is closely processed ground 15.
2, interim positioning step: utilize islands and reefs projection reef as fulcrum, main platform body 1 is towed to the construction predeterminated position by hoist engine when the high water mark, utilize low tide or open water intaking valve 13, to the interior water filling of ballast tank 3, make main body 1 bottom contact ground 15 surfaces, utilize the gravity of main body 1 to be temporarily fixed on ground 15;
3, sink to the bottom the leveling step: use binding clasp 10 to adjust the relative length of wireropes 12, control subject 1 periphery guide pile 8 everywhere extends the outer length in main body 1 bottom, thus the levelness of adjustment main body 1; If the planeness of ground 15 is high, the development length of guide pile 8 is just short, perhaps only use the guide pile 8 of part position, main body 1 base section is regional at this moment contacts with ground 15, not contacting between subregion and ground 15, if ground 15 planeness are not high, is the level that guarantees main body 1, also can heighten main body 1, make the surface of its bottom ground 15 away from keyboard;
4, sink to the bottom fixing step: the gravels 14 in gravel cabin 5 are discharged by gravel passage 6, fill the space between ground 15 surfaces and main body 1 bottom; Make layer of gravel evenly closely knit by vibration or local explosion; Suction pile 18 be set or suppress stake by preformed hole 16 again, strengthening fixing, completing the fixing of prefabricated fixed offshore platform.
Larger at ground 15 bearing capacities, and on physical features position smooth, in easy flights, main body 1 is directly sunk to the bottom be fixed on natural ground 15, rely on the weight of main body 1 self gravitation or content ballast keep main platform body 1 steadily.But actual ground 15 is scraggly often, perhaps there is the obstruction that differs in size, contacting of main body 1 bottom and ground 15 can not be good, can produce larger stress on main body 1 bottom, therefore needs to use gravel 14 to fill ground 15 surface irregularity parts.The bearing capacity of gravel 4 is large, and the support effect of main body 1 is better than coral sand.Gravel 14 can be placed in gravel cabin 5 in advance along with main body 1 pull together, also can arrange in addition to transport ship gravel 14 is transported to the scene, and the gravel passage 6 by gravel cabin 5 falls.
When main platform body 1 sinking is in place on ground 15, the deadweight of main platform body 1 can be pressed into the bottom of suction pile 18 in mud certain depth and form bottom end seal, make the inside and outside pressure differential that produces of suction pile 18 with the pump pumping, suction pile can be pressed in mud until arrive desired depth, complete sinking in place after, the pressure differential in suction pile 18 can fade away with water in the infiltration in soil; Can be used for main platform body 1 fixing on subgrade, also can be used for the braced structures of off-lying sea harbour and trestle.Can adopt mode and the main body 1 of tenon fixing after suction pile 18 installation in position, forever solid with concreting on it.Can directly squeeze into by pile driver in preformed hole 16 and suppress stake, and forever solid with the rear realization of concreting preformed hole 16.
Above-listed detailed description is that this embodiment limits the scope of the claims of the present invention for the illustrating of one of the present invention possible embodiments, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the scope of the claims of this case.
Claims (10)
1. prefabricated fixed offshore platform, comprise prefabricated main platform body, it is characterized in that: separate by bulkhead in described main body and be provided with several watertight compartments, ballast tank and gravel cabin, wherein ballast tank is positioned at the bottom of described main body, watertight compartment is positioned at above ballast tank, gravel bilge section is provided with the gravel passage that is interlinked to the outside with described main body, be respectively equipped with several positioners along described body peripheral edge, be respectively equipped with on each positioner and can extend downward the outer guide pile of described bottom part body.
2. prefabricated fixed offshore platform according to claim 1, is characterized in that: be provided with the preformed hole of some perforations on described main body, suction pile be set in preformed hole or suppress stake.
3. prefabricated fixed offshore platform according to claim 1 and 2 is characterized in that: described positioner is provided with to be adjusted described guide pile bottom and extends the conditioning equipment of described bottom part body length.
4. prefabricated fixed offshore platform according to claim 3, it is characterized in that: the described gravel passage in described bottom part body is broadening formation.
5. prefabricated fixed offshore platform according to claim 4, it is characterized in that: described main body is reinforced concrete prefabricated structure.
6. the mounting method of a prefabricated fixed offshore platform, it is characterized in that: it comprises the following steps:
1), interim positioning step: utilize islands and reefs projection reef as fulcrum, main platform body is towed to the construction predeterminated position by hoist engine when the high water mark, utilize low tide or the method for water filling in ballast tank, make bottom part body primary surface contiguously; By guide pile, main body is temporarily fixed on ground;
2), sink to the bottom the leveling step: control the length that each guide pile extends bottom part body, adjust position and levelness that main body is sat the end;
3), sink to the bottom fixing step: the gravel in the gravel cabin is discharged by the gravel passage, fill space between foundation surface and bottom part body, complete the fixing of prefabricated fixed offshore platform.
7. the mounting method of prefabricated fixed offshore platform according to claim 6, is characterized in that: in sinking to the bottom fixing step, also comprise the step that layer of gravel is flattened by vibration or local explosion method.
8. the mounting method of prefabricated fixed offshore platform according to claim 6, is characterized in that: in sinking to the bottom fixing step, also comprise in preformed hole suction pile being set or suppressing the step that stake is fixed.
9. the mounting method of according to claim 7 or 8 described prefabricated fixed offshore platforms, is characterized in that: before described interim positioning step, also comprise the step with coral sand pretreatment ground.
10. the mounting method of according to claim 7 or 8 described prefabricated fixed offshore platforms, is characterized in that: before described interim positioning step, also comprise the step with the accurate Ground Treatment of blast mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046890.5A CN103103972B (en) | 2013-02-05 | 2013-02-05 | Prefabricate type nautical fixed platform and installing method |
| PCT/CN2014/070734 WO2014121684A1 (en) | 2013-02-05 | 2014-01-16 | Pre-formed marine fixed platform and method of installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046890.5A CN103103972B (en) | 2013-02-05 | 2013-02-05 | Prefabricate type nautical fixed platform and installing method |
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| Publication Number | Publication Date |
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| CN103103972A true CN103103972A (en) | 2013-05-15 |
| CN103103972B CN103103972B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310046890.5A Active CN103103972B (en) | 2013-02-05 | 2013-02-05 | Prefabricate type nautical fixed platform and installing method |
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| CN (1) | CN103103972B (en) |
| WO (1) | WO2014121684A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790171A (en) * | 2014-01-26 | 2014-05-14 | 广州中国科学院工业技术研究院 | Prefabricated caisson and installation method thereof |
| CN103790146A (en) * | 2014-01-26 | 2014-05-14 | 广州中国科学院工业技术研究院 | Gravel bin of prefabricated fixed offshore platform |
| CN103911978A (en) * | 2014-03-24 | 2014-07-09 | 广州中国科学院工业技术研究院 | Offshore prefabricated platform and mounting method thereof |
| WO2014121684A1 (en) * | 2013-02-05 | 2014-08-14 | 广州中国科学院工业技术研究院 | Pre-formed marine fixed platform and method of installation |
| CN105178273A (en) * | 2015-06-17 | 2015-12-23 | 广州中国科学院工业技术研究院 | Maneuvering bottom resting offshore platform and installation method thereof |
| CN105201007A (en) * | 2015-09-29 | 2015-12-30 | 广州中国科学院工业技术研究院 | Building on mud flat and building method thereof |
| CN105350508A (en) * | 2015-09-29 | 2016-02-24 | 广州中国科学院工业技术研究院 | Prefabricated marine fixing platform and installation method |
| CN105350493A (en) * | 2015-11-16 | 2016-02-24 | 广州驭蓝驿站工程技术有限公司 | Method and structure for rapidly expanding island area |
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| CN103103972B (en) * | 2013-02-05 | 2015-04-22 | 广州中国科学院工业技术研究院 | Prefabricate type nautical fixed platform and installing method |
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| CN2806564Y (en) * | 2005-07-08 | 2006-08-16 | 中国海洋石油总公司 | Oil gas processing platform for shoal water zone |
| CN201593181U (en) * | 2009-10-16 | 2010-09-29 | 抚州市临川白勇海洋工程有限公司 | Self-lifting offshore wind power set mounting platform |
| WO2011116254A2 (en) * | 2010-03-19 | 2011-09-22 | National Oilwell Varco, L.P. | Jack-up rig with leg-supported ballast loads |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121684A1 (en) * | 2013-02-05 | 2014-08-14 | 广州中国科学院工业技术研究院 | Pre-formed marine fixed platform and method of installation |
| CN103790171A (en) * | 2014-01-26 | 2014-05-14 | 广州中国科学院工业技术研究院 | Prefabricated caisson and installation method thereof |
| CN103790146A (en) * | 2014-01-26 | 2014-05-14 | 广州中国科学院工业技术研究院 | Gravel bin of prefabricated fixed offshore platform |
| CN103790146B (en) * | 2014-01-26 | 2015-09-30 | 广州中国科学院工业技术研究院 | A kind of gravel cabin of prefabricated fixed offshore platform |
| CN103911978A (en) * | 2014-03-24 | 2014-07-09 | 广州中国科学院工业技术研究院 | Offshore prefabricated platform and mounting method thereof |
| CN103911978B (en) * | 2014-03-24 | 2016-08-17 | 广州中国科学院工业技术研究院 | A kind of marine prefabricated platform and installation method thereof |
| CN105178273A (en) * | 2015-06-17 | 2015-12-23 | 广州中国科学院工业技术研究院 | Maneuvering bottom resting offshore platform and installation method thereof |
| CN105201007A (en) * | 2015-09-29 | 2015-12-30 | 广州中国科学院工业技术研究院 | Building on mud flat and building method thereof |
| CN105350508A (en) * | 2015-09-29 | 2016-02-24 | 广州中国科学院工业技术研究院 | Prefabricated marine fixing platform and installation method |
| CN105350493A (en) * | 2015-11-16 | 2016-02-24 | 广州驭蓝驿站工程技术有限公司 | Method and structure for rapidly expanding island area |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014121684A1 (en) | 2014-08-14 |
| CN103103972B (en) | 2015-04-22 |
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Inventor after: Ding Hua Inventor after: Wang Wei Inventor after: Ye Juan Inventor after: Zhang Jianchu Inventor after: Sheng Guoqiang Inventor after: Sun Yaoguo Inventor after: Shen Zheng Inventor after: Han Jun Inventor after: Zheng Ruiyun Inventor after: Tang Feng Inventor after: Xu Zhenli Inventor before: Ding Hua Inventor before: Sheng Guoqiang Inventor before: Shen Zheng Inventor before: Zheng Ruiyun Inventor before: Xu Zhenli |
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