CN102268880A - Through-middle type cylindrical foundation and mounting process - Google Patents
Through-middle type cylindrical foundation and mounting process Download PDFInfo
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- CN102268880A CN102268880A CN2010101914844A CN201010191484A CN102268880A CN 102268880 A CN102268880 A CN 102268880A CN 2010101914844 A CN2010101914844 A CN 2010101914844A CN 201010191484 A CN201010191484 A CN 201010191484A CN 102268880 A CN102268880 A CN 102268880A
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Abstract
The invention discloses a through-middle type cylindrical foundation and a mounting process. The through-middle type cylindrical foundation comprises a cylindrical foundation body with a closed upper end and an open lower end; a water pumping hole is arranged on the closed cylinder top cover at the upper end of the cylindrical foundation body; and an inner cylinder wall is sleeved in the cylindrical foundation body, with a top-bottom through structure. The method comprises the mounting steps: I, enabling a workboat to sail to the construction site, and positioning; II, hanging the cylindrical foundation and a positioning pile to the seafloor; III, measuring the horizontal condition of the cylinder top, and leveling; IV, sinking the cylindrical foundation and the positioning pile below the mud surface; V, pressing the pile into the mud for certain depth, and releasing a hydraulic transmission fastening device; VI, starting a water pump to pump water to form negative pressure, and vertically penetrating the cylindrical foundation into the mud surface along the pile; VII, observing a data acquisition device until the cylindrical foundation penetrates into the designed depth; and VIII, collecting the positioning pile to finish the mounting. The through-middle type cylindrical foundation disclosed by the invention can be vertically penetrated into the soil layer so as to provide a stable working platform for the production facility; larger bearing force can be provided; and the mounting process is simple and easy to operate.
Description
Technical field
The present invention relates to the tubular basis, relate in particular to a kind of formula of tubular basis and mounting process that is used for the subsea production system pedestal, belong to offshore oil engineering field.
Background technology
The tubular basis is used as the basis of shallow sea fixed platform usually, or the basis of submarine facility.
As shown in Figure 1, at present, the steel tubular construction of a kind of upper end closed, lower ending opening is adopted on the tubular basis.The tube top cover of upper end closed is provided with suction eye with the connection pipeline that draws water.Its work progress is: at first, be lowered into seabed certain depth (the initial penetration into mud degree of depth) in the deadweight effect, formed the closed state of water in the tube base; Then,, make the interior water yield of extracting out of same time, in closed cylinder, form negative pressure greater than the water yield of infiltrating from the bottom by means of the water in the outside suction cylinder base of pumping system that the basic top of tube is set; Negative Pressure Difference is enough big inside and outside tube, to such an extent as to when the downward thrust that produces can overcome penetration resistance, the tube base just constantly was pressed in the soil, up to arriving desired depth.
Along with China's marine petroleum development constantly to the striding forward of deep water field, tubular basis being applied in the exploitation of deep-sea more and more widely is as the platform of production facility under water.By water under the lifting, in abyssal environment,, influenced by wave current when install on the tubular basis, just traditional tubular basis accurately can't be located, and in the process of injection mud face, can't guarantee the steadily injection of tubular basis because the hanger rope that adopts is long; Cylinder pressure control is difficulty, thereby also can't guarantee whether level of tubular basis end face.Whether therefore, the installation on tubular basis will run into than the shallow sea and more be difficult to the difficult problem that overcomes, steady or the like as: pedestal location, pedestal leveling, cylinder internal pressure control, tube injection.
Summary of the invention
Main purpose of the present invention is to overcome the above-mentioned shortcoming that prior art exists, and a kind of formula of tubular basis and mounting process are provided, and it is the injection soil layer vertically, for the production facility under water of working thereon provides working platform stably; The contact area that has increased with soil layer can provide more bearing capacity; Mounting process is easy, easily operation.
The objective of the invention is to realize by following technical scheme:
A kind of formula of tubular basis comprises the tubular basis body of upper end closed, lower ending opening, and the tube top cover of tubular basis body upper end closed is provided with suction eye; It is characterized in that: suit one inner tube wall in this tubular basis body, this inner tube wall is a up/down perforation formula structure.
A kind of formula of tubular basis mounting process is characterized in that: adopt following installation steps:
The first step, operation ship navigates by water to the job site, is accurately located by GPS navigation system and positioning equipment;
In second step, tubular basis and guide pile are hung to the seabed;
The 3rd step, measure the horizontal situation that tube pushes up, then, leveling tubular basis;
In the 4th step, tubular basis and guide pile rely on own wt to sink to certain depth under the mud face;
The 5th step started the hydraulic drive fastener, and stake is pressed in the mud behind the certain depth, unclamped the hydraulic drive fastener;
The 6th step started suction pump and draws water, and formed negative pressure, and the tubular basis is along the vertical injection mud of stake face;
The 7th step, the observed data Acquisition Instrument, until the injection of tubular basis to projected depth;
The 8th step, regain guide pile, install.
The described tubular basis being put to the seabed at first, penetrates a guide pile at the inner tube wall middle part on tubular basis, on the tube top cover the fastening transmission device of several hydraulic pressure is installed, and the connecting rod and the guide pile of the fastening transmission device of this hydraulic pressure connect as one; Simultaneously, on the tubular basis level measurement device is installed, level measurement device links to each other with data collecting instrument; And suction pump is installed on guide pile.
Described level measurement device is the horizontal survey meter; The hydraulic drive fastener is a hydraulic cylinder.
Described tubular basis leveling is undertaken by lowering equipment.
Beneficial effect of the present invention:
1) the present invention be because the contact area that has increased with soil layer can provide more bearing capacity, thereby can reduce the basic size of tube under the prerequisite that guarantees enough bearing capacities.
2) formula of tube base adopts the stub injection of leading, and can guarantee a vertically injection soil layer of tube base, for the equipment on it provides the good operation platform.
3) in the installation process, because the injection of stub elder generation, disturbance soil layer more help the injection of tube base.
4) the easy easy operation of mounting process, realization.
Description of drawings:
Fig. 1 is existing tubular foundation structure schematic diagram.
Fig. 2 is a structural representation of the present invention.
Fig. 3 is deep-sea installation exercise figure of the present invention.
Fig. 4 is the present invention and stub and the fastening transmission device scheme of installation of hydraulic pressure.
Fig. 5 is the fastening transmission device schematic diagram of hydraulic pressure among Fig. 4.
Fig. 6 is a measurement mechanism scheme of installation of the present invention.
Major label description in figure:
1 inner tube wall, 2 tubulars basis body, 3 top covers, 4 suction eyes, 5 are located connecting rod, 62 lower links, 63 hydraulic cylinders, 64 fastening voussoirs, 7 horizontal survey meters, 8 data collecting instruments on stubs, the fastening transmission device of 6 hydraulic pressure, 61.
The specific embodiment
As shown in Figure 2, the present invention includes the tubular basis body 2 of upper end closed, lower ending opening, the tube top cover 3 of tubular basis body 2 upper end closeds is provided with suction eye 4; Adopt welding manner suit one inner tube wall 1 in this tubular basis body 2, inner tube wall 1 is a up/down perforation formula structure.
The present invention adopts following installation steps:
The first step, as shown in Figure 3, operation ship is by towage or navigate certainly to the job site, is accurately located by GPS navigation system and positioning equipment;
In second step, utilize the lowering equipment that is installed on the operation ship that formula of tubular basis and location stub 5 are hung to the seabed; The lowering equipment of present embodiment is a crane.
The 3rd step, utilize the horizontal survey meter 7 that is located on the tubular basis to measure the horizontal situation on tube top, then, utilize lowering equipment leveling tubular basis;
As Fig. 4-shown in Figure 6, formula of tubular basis is being put to the seabed, at first, penetrate a location stub 5 at inner tube wall 1 middle part on tubular basis and be used for guiding and fixing tubular basis, on the stub 5 of location, suction pump is installed; Can guarantee vertically injection soil of tube base; Adopt the bolt mode that two fastening transmission devices 6 of hydraulic pressure are installed on the tube top cover 3, the fastening transmission device 6 of hydraulic pressure is provided with hydraulic cylinder 63, the last connecting rod 61 of hydraulic cylinder 63 and lower link 62 and location stub 5 are by fastening voussoir and adopt the bolt mode to link together, when the tubular basis is installed, compresses the last connecting rod 61 of hydraulic cylinder 63 in the solid transmission device 6 and lower link 62 by regulator solution and will locate stub 5 and be pressed into certain depth in the mud; Simultaneously, horizontal survey meter 7 is installed on the tubular basis, horizontal survey meter 7 links to each other with data collecting instrument 8, in order to the horizontal situation in observation tube top, then, utilizes lowering equipment leveling tubular basis; And on the stub 5 of location, suction pump is installed;
In the 4th step, tubular basis and location stub 5 rely on own wt to sink to certain depth under the mud face;
The 5th step started hydraulic drive fastener 6, and stub 5 is pressed in the mud behind the certain depth, unclamped hydraulic drive fastener 6;
The 6th step started suction pump and draws water, and formed negative pressure, and the tubular basis is along stub 5 vertical injection mud faces;
The 7th step, observed data Acquisition Instrument 8, until the injection of tubular basis to projected depth;
The 8th step, regain location stub 5, install.
Hydraulic cylinder, horizontal survey meter, data collecting instrument, navigation system, positioning equipment and suction pump are the commercially available prod.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. formula of tubular basis comprises the tubular basis body of upper end closed, lower ending opening, and the tube top cover of tubular basis body upper end closed is provided with suction eye; It is characterized in that: suit one inner tube wall in this tubular basis body, this inner tube wall is a up/down perforation formula structure.
2. formula of tubular basis mounting process is characterized in that: adopt following installation steps:
The first step, operation ship navigates by water to the job site, is accurately located by GPS navigation system and positioning equipment;
In second step, tubular basis and guide pile are hung to the seabed;
The 3rd step, measure the horizontal situation that tube pushes up, then, leveling tubular basis;
In the 4th step, tubular basis and guide pile rely on own wt to sink to certain depth under the mud face;
The 5th step started the hydraulic drive fastener, and stake is pressed in the mud behind the certain depth, unclamped the hydraulic drive fastener;
The 6th step started suction pump and draws water, and formed negative pressure, and the tubular basis is along the vertical injection mud of stake face;
The 7th step, the observed data Acquisition Instrument, until the injection of tubular basis to projected depth;
The 8th step, regain guide pile, install.
3. formula of tubular according to claim 2 basis mounting process, it is characterized in that: the described tubular basis being put to the seabed, at first, inner tube wall middle part on the tubular basis penetrates a guide pile, on the tube top cover the fastening transmission device of several hydraulic pressure is installed, the connecting rod and the guide pile of the fastening transmission device of this hydraulic pressure connect as one; Simultaneously, on the tubular basis level measurement device is installed, level measurement device links to each other with data collecting instrument; And suction pump is installed on guide pile.
4. according to claim 2 or 3 described formula of tubular basis mounting processs, it is characterized in that: described level measurement device is the horizontal survey meter; The hydraulic drive fastener is a hydraulic cylinder.
5. formula of tubular according to claim 1 basis mounting process is characterized in that: described tubular basis leveling is undertaken by lowering equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101914844A CN102268880A (en) | 2010-06-04 | 2010-06-04 | Through-middle type cylindrical foundation and mounting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101914844A CN102268880A (en) | 2010-06-04 | 2010-06-04 | Through-middle type cylindrical foundation and mounting process |
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| Publication Number | Publication Date |
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| CN102268880A true CN102268880A (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101914844A Pending CN102268880A (en) | 2010-06-04 | 2010-06-04 | Through-middle type cylindrical foundation and mounting process |
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| CN (1) | CN102268880A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178325A (en) * | 2015-08-28 | 2015-12-23 | 中国海洋大学 | Mounting device and mounting method of umbrella type seabed suction anchor foundation |
| CN106948366A (en) * | 2017-04-19 | 2017-07-14 | 合肥学院 | A kind of barrel base and accessory part and construction method for being easy to control perpendicularity |
| CN109440805A (en) * | 2018-11-30 | 2019-03-08 | 天津大学 | A kind of long-short pile bucket foundation and its construction method suitable for deep water complex sea area |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3839872A (en) * | 1972-05-08 | 1974-10-08 | Co Generale D Equipement Marit | Method of securing a large-diameter tube to a casing underwater |
| CN2467578Y (en) * | 2001-03-19 | 2001-12-26 | 天津大学 | Removable light caisson foundation soil water earth-retaining and water retaining structure |
| KR100719300B1 (en) * | 2006-04-12 | 2007-05-18 | 한국해양연구원 | Foundation construction structure of bucket pile and method thereof |
| CN1995557A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Stake-barrel base |
| CN101255701A (en) * | 2007-01-25 | 2008-09-03 | 天津市海王星海上工程技术有限公司 | At-sea composite foundation |
-
2010
- 2010-06-04 CN CN2010101914844A patent/CN102268880A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3839872A (en) * | 1972-05-08 | 1974-10-08 | Co Generale D Equipement Marit | Method of securing a large-diameter tube to a casing underwater |
| CN2467578Y (en) * | 2001-03-19 | 2001-12-26 | 天津大学 | Removable light caisson foundation soil water earth-retaining and water retaining structure |
| KR100719300B1 (en) * | 2006-04-12 | 2007-05-18 | 한국해양연구원 | Foundation construction structure of bucket pile and method thereof |
| CN1995557A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Stake-barrel base |
| CN101255701A (en) * | 2007-01-25 | 2008-09-03 | 天津市海王星海上工程技术有限公司 | At-sea composite foundation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178325A (en) * | 2015-08-28 | 2015-12-23 | 中国海洋大学 | Mounting device and mounting method of umbrella type seabed suction anchor foundation |
| CN106948366A (en) * | 2017-04-19 | 2017-07-14 | 合肥学院 | A kind of barrel base and accessory part and construction method for being easy to control perpendicularity |
| CN106948366B (en) * | 2017-04-19 | 2023-10-13 | 合肥学院 | Barrel-shaped foundation and auxiliary assembly convenient for controlling verticality and construction method |
| CN109440805A (en) * | 2018-11-30 | 2019-03-08 | 天津大学 | A kind of long-short pile bucket foundation and its construction method suitable for deep water complex sea area |
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Application publication date: 20111207 |