CN110924372A - Self-installation construction method of ultra-large jacket - Google Patents
Self-installation construction method of ultra-large jacket Download PDFInfo
- Publication number
- CN110924372A CN110924372A CN201911194693.1A CN201911194693A CN110924372A CN 110924372 A CN110924372 A CN 110924372A CN 201911194693 A CN201911194693 A CN 201911194693A CN 110924372 A CN110924372 A CN 110924372A
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- jacket
- ultra
- self
- construction method
- hoisting
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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
-
- 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
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a self-installation construction method of an ultra-large jacket, which comprises the following steps: loading the jacket on the semi-submersible barge, installing a lowering device at the bottom end of the jacket, and driving to a preset installation position; the hoisting device is stopped at one side of the semi-submersible barge and connected to the top of the jacket, so that the hoisting end of the hoisting device has force; driving away from the semi-submerged barge, moving the lower device upwards along the pile legs of the jacket, and enabling the jacket to slowly submerge into the water by matching with the lifting device; when the jacket is at a preset distance from the seabed, the position and the angle of the jacket are adjusted, and then the lowering device is continuously moved upwards and matched with the hoisting device to enable the jacket to sit at the bottom; and finishing the jacket installation work after the hoisting relation is removed. According to the self-installation construction method, the lowering device is matched with the floating crane with the crane weight smaller than the mass of the ultra-large jacket, so that the ultra-large jacket is quickly installed, the construction cost of the jacket is reduced, and the economic benefit of an enterprise is improved.
Description
Technical Field
The invention relates to the technical field of marine petroleum engineering, in particular to a self-installation construction method of an ultra-large jacket.
Background
At present, when a marine jacket is installed, a floating crane ship is generally adopted for marine installation, the hoisting capacity of the floating crane ship must be larger than that of the jacket, the weight of the existing jacket is heavier along with the development of increasing the size of a module, and a lot of floating cranes cannot meet the hoisting capacity of the ultra-large jacket, so that the installation period of the ultra-large jacket is too long, and the construction cost is high.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. In view of this, the present invention needs to provide a self-installation construction method for an ultra-large jacket, which can quickly install the ultra-large jacket, reduce the construction cost of the jacket, and improve the economic benefits of enterprises.
The invention provides a self-installation construction method of an ultra-large jacket, which comprises the following steps:
s1, loading the jacket on the semi-submersible barge, installing at least two lowering devices at the bottom ends of two symmetrical side surfaces of the jacket, and driving the semi-submersible barge loaded with the jacket to a preset installation position;
s2, stopping the hoisting device at one side of the semi-submerged barge, connecting the hoisting device to the top of the jacket, and enabling the hoisting end of the hoisting device to have force;
s3, driving away from the semi-submerged barge, moving the lowering device upwards along the pile legs of the jacket, and enabling the jacket to slowly submerge into the water by matching with the lifting device;
s4, when the jacket is at a preset distance from the seabed, the jacket is positioned at a proper position and at a proper position angle by adjusting a hoisting device;
s5, when the jacket in-position and in-position angle meet the requirements, further moving the lowering device upwards and matching with the lifting device to enable the jacket to sit at the bottom;
and S6, releasing the connection between the jacket and the lowering device and the connection between the jacket and the hoisting device, and completing the mounting work of the ultra-large jacket.
According to the self-installation construction method of the ultra-large jacket, the pile legs on two sides of the jacket are provided with the preset tracks in sliding connection with the lowering device.
According to the self-installation construction method of the ultra-large jacket, the lowering device comprises a floating assembly, lifting pieces and a traction rope, a sliding groove matched with the preset rail is formed in the floating assembly, the preset rail is embedded in the sliding groove, the lifting pieces are arranged at the top end of the floating assembly, one end of the traction rope is wound on the lifting pieces, the other end of the traction rope is connected with the bottom end of the jacket, and the floating assembly can move upwards along the pile legs of the jacket under the lowering and buoyancy effects of the lifting pieces.
According to the self-installation construction method of the ultra-large jacket, the hoisting device comprises a floating crane ship, a hoisting rigging for hoisting the jacket and a control cable, two ends of the hoisting rigging are connected with the jacket and are hooked on a hook of the floating crane ship, and two ends of the control cable are respectively connected with the floating crane ship and the jacket.
According to the self-installation construction method of the ultra-large jacket, when the preset distance between the jacket and the seabed is 2m in the step S4, the floating crane ship controls the hoisting rigging to adjust the in-position of the jacket, and the control cable controls the in-position angle of the jacket.
According to the self-installation construction method of the ultra-large jacket, the floating assembly comprises a buoyancy tank and a plurality of stressed structural plates which are symmetrically arranged on the buoyancy tank, and the sliding grooves are formed in the stressed structural plates.
According to the self-installation construction method of the ultra-large jacket, the lifting pieces are tension jacks, and the number of the lifting pieces on each stressed structural plate is four.
According to the self-installation construction method of the ultra-large jacket, the top end of the preset track is provided with a plurality of rolling shafts which are arranged side by side along the transverse direction, and the rolling shafts are abutted to the outer side wall of the buoyancy tank.
According to the self-installation construction method of the ultra-large jacket, the lifting lugs are arranged at the bottom ends of the pile legs of the jacket.
According to the self-installation construction method of the ultra-large jacket, the stress structure plate is provided with the preformed hole, and one end of the traction rope penetrates through the preformed hole and then is connected with the lifting lug.
According to the self-installation construction method of the ultra-large jacket, the lowering devices are symmetrically arranged on two sides of the ultra-large jacket, partial buoyancy of the jacket is provided through the buoyancy tanks in the lowering devices, and the lowering devices are matched with the floating crane with the lifting weight smaller than the quality of the ultra-large jacket for use, so that the ultra-large jacket is quickly constructed and installed in water, the problem that the jacket cannot be installed by the floating crane with the lifting weight smaller than the quality of the jacket is solved, the construction cost of the jacket is effectively reduced, and the economic benefit of enterprises is improved.
Drawings
Figure 1 is a schematic view of a lowering device in connection with a jacket according to the invention.
Fig. 2 is a schematic side view of a semi-submersible barge loading jacket arrangement according to the invention.
Fig. 3 is a schematic top view of a semi-submersible barge loading jacket arrangement according to the invention.
Fig. 4 is a schematic top view of a crane parked at a semi-submerged barge according to the invention.
Figure 5 is a schematic top view of a vessel hoisting jacket in position according to the invention.
Fig. 6 is a front view of fig. 5.
Fig. 7 is a schematic illustration of the position of the buoyancy tank after the jacket is in place according to the present invention.
Fig. 8 is a schematic top view of a lift in accordance with the present invention in connection with a pontoon.
Figure 9 is a schematic side view of a lift in accordance with the present invention in connection with a pontoon.
Fig. 10 is a flowchart illustrating the operation steps of a self-installation construction method of an ultra-large jacket according to the present invention.
Reference numerals: 1-a jacket; 2-semi-submerged barge; 3-lowering the device; 4-hoisting device; 11-presetting a track; 12-a lifting lug; 31-a floating assembly; 32-a lift; 33-a hauling rope; 41-floating crane ship; 42-hoisting rigging; 43-a control cable; 111-roll axis; 311-sliding grooves; 312-a buoyancy tank; 313-a stressed structural panel; 314-prepare hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1 to 10, according to an embodiment of the present invention, a self-installing construction method of an ultra-large jacket includes the following steps:
s100, loading the jacket 1 on the semi-submersible barge 2, installing at least two lowering devices 3 at the bottom ends of two symmetrical side surfaces of the jacket 1, and then driving the semi-submersible barge 2 loaded with the jacket 1 to a preset installation position;
s200, stopping the lifting device 4 at one side of the semi-submersible barge 2, connecting the lifting device 4 to the top of the jacket 1, and enabling the lifting end of the lifting device 4 to have force;
s300, driving away the semi-submerged barge 2, moving the lower device 3 upwards along the pile leg of the jacket 1, and enabling the jacket 1 to slowly submerge into the water by matching with the lifting device 4;
s400, when the jacket 1 is away from the seabed by a preset distance, the in-position and the in-position angle of the jacket 1 are completed by adjusting the lifting device 4;
s500, when the in-position and the in-position angle of the jacket 1 meet requirements, further moving the lowering device 3 upwards and matching with the lifting device 4 to enable the jacket 1 to sit at the bottom;
s600, connection between the jacket 1 and the lowering device 3 and connection between the jacket 1 and the lifting device 4 are released, and installation work of the ultra-large jacket 1 is completed.
According to the self-installation construction method of the ultra-large jacket, the lowering devices 3 are symmetrically installed on two sides of the ultra-large jacket 1, partial buoyancy of the jacket 1 is provided through the floating boxes 312 in the lowering devices 3, and the lowering devices are matched with the floating crane 41 with the lifting weight smaller than the mass of the ultra-large jacket for use, so that the ultra-large jacket is quickly constructed and installed in water, the problem that the jacket 1 cannot be installed due to the fact that the floating crane 41 with the lifting weight smaller than the mass of the jacket cannot be used is solved, the construction cost of the jacket is effectively reduced, and the economic benefits of enterprises are improved.
As shown in fig. 8 and 9, the pile legs on both sides of the jacket 1 are provided with the preset rails 11 slidably connected with the lowering device 3, and the lowering device 3 can stably and smoothly move on the pile legs of the jacket 1 through the preset rails 11, so that the lowering construction time of the jacket 1 is saved, and the construction efficiency is improved.
As shown in fig. 3 to 9, the lowering device 3 includes a floating assembly 31, lifting members 32 and a hauling rope 33, a sliding groove 311 used in cooperation with a preset rail 11 is provided on the floating assembly 31, the preset rail 11 is embedded in the sliding groove 311, a plurality of lifting members 32 are provided on the top end of the floating assembly 31, one end of the hauling rope 33 is wound on the lifting members 32, the other end is connected with the bottom end of the jacket 1, so that the floating assembly 31 is moved up along the spud legs of the jacket 1 by the lowering of the lifting members 32 and the buoyancy.
As shown in fig. 4 to 7, the hoisting device 4 includes a floating crane vessel 41, a hoisting cable 42 for hoisting the jacket 1, and a control cable 43, both ends of the hoisting cable 42 are connected to the jacket 1 and hooked on hooks of the floating crane vessel 41, both ends of the control cable 43 are respectively connected to the floating crane vessel 41 and the jacket 1, the hoisting cable 42 is in a force application state and cooperates with buoyancy of the buoyancy tank 312 to control lowering speed of the jacket 1 and adjust a position of the jacket, and the control cable 43 is used for adjusting and controlling a position angle of the jacket 1.
As shown in fig. 6 and 7, when the predetermined distance from the seabed to the jacket 1 in step S4 is 2m, the floating crane 41 controls the hoisting rigging 42 to adjust the position of the jacket 1, and the control cable 43 controls the position angle of the jacket 1, so as to improve the installation efficiency and the positioning accuracy of the jacket 1.
As shown in fig. 3 and 5 to 9, the floating assembly 31 includes a buoyancy tank 312 and a plurality of stressed structural plates 313 symmetrically disposed on the buoyancy tank 312, and the sliding grooves 311 are disposed on the stressed structural plates 313, it should be understood that the number of the buoyancy tank 312 is two symmetrically disposed on the jacket 1, two stressed structural plates 313 are disposed on each buoyancy tank 312, the four stressed structural plates 313 are respectively connected with four legs of the jacket 1, so as to provide buoyancy for lowering the jacket 1 through the buoyancy tank 312, and the buoyancy provided by the buoyancy tank 312 matches with a floating crane with a weight smaller than the mass of the jacket 1 to meet the use requirement of hoisting the ultra-large jacket, thereby reducing the construction cost and saving the construction cost.
As shown in fig. 3 to 9, the lifting members 32 are tension jacks, and the number of the lifting members 32 on each stressed structural plate 313 is four, and the pulling ropes 33 are slowly released by the tension jacks, so that the buoyancy tank 312 moves up along the legs of the jacket 1, and the synchronous motion of the plurality of tension jacks ensures the stability of the jacket 1 in the lowering process, wherein the pulling ropes 33 can be steel wire ropes with waterproof function.
As shown in fig. 8 and 9, the top end of the preset rail 11 is provided with a plurality of rollers 111 arranged side by side in the transverse direction, and the rollers 111 abut against the outer side wall of the buoyancy tank 312, it should be understood that the preset rail 11 moves in the sliding groove 311, and the rollers 111 are matched to reduce the friction force of the relative movement between the buoyancy tank 312 and the jacket 1, so as to increase the lowering speed of the jacket 1 and save the construction time.
As shown in fig. 3 and 7, the lifting lugs 12 are arranged at the bottom ends of the legs of the jacket 1, the stress structure plate 313 is provided with the preformed holes 314, and one end of the hauling cable 33 passes through the preformed holes 314 and then is connected with the lifting lugs 12, it should be understood that the preformed holes 314 can reduce interference between the hauling cable 33 and the stress structure plate 312 in the construction process of the jacket 1, and ensure smooth construction of the jacket 1.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A self-installation construction method of an ultra-large jacket is characterized by comprising the following steps:
s1, loading the jacket on the semi-submersible barge, installing at least two lowering devices at the bottom ends of two symmetrical side surfaces of the jacket, and driving the semi-submersible barge loaded with the jacket to a preset installation position;
s2, stopping the hoisting device at one side of the semi-submerged barge, connecting the hoisting device to the top of the jacket, and enabling the hoisting end of the hoisting device to have force;
s3, driving away from the semi-submerged barge, moving the lowering device upwards along the pile legs of the jacket, and enabling the jacket to slowly submerge into the water by matching with the lifting device;
s4, when the jacket is at a preset distance from the seabed, the jacket is positioned at a proper position and at a proper position angle by adjusting a hoisting device;
s5, when the jacket in-position and in-position angle meet the requirements, further moving the lowering device upwards and matching with the lifting device to enable the jacket to sit at the bottom;
and S6, releasing the connection between the jacket and the lowering device and the connection between the jacket and the hoisting device, and completing the mounting work of the ultra-large jacket.
2. The self-installation construction method of the ultra-large jacket according to claim 1, wherein the pile legs at both sides of the jacket are provided with preset rails slidably connected with the lowering device.
3. The self-installation construction method of the ultra-large jacket according to claim 2, wherein the lowering device comprises a floating assembly, a lifting member and a hauling rope, a sliding groove matched with the preset rail is formed in the floating assembly, the preset rail is embedded in the sliding groove, the lifting members are arranged at the top end of the floating assembly, one end of the hauling rope is wound on the lifting member, and the other end of the hauling rope is connected with the bottom end of the jacket, so that the floating assembly can move upwards along the pile legs of the jacket under the action of lowering and buoyancy of the lifting member.
4. The self-installation construction method of the ultra-large jacket according to claim 1, wherein the hoisting device comprises a floating crane, a hoisting rigging for hoisting the jacket, and a control cable, two ends of the hoisting rigging are connected with the jacket and hooked on a hook of the floating crane, and two ends of the control cable are respectively connected with the floating crane and the jacket.
5. The self-installation construction method of the very large jacket according to claim 4, wherein when the predetermined distance from the seabed of the jacket is 2m in step S4, the hoisting rigging is controlled by the floating vessel to adjust the position of the jacket in place, and the angle of the jacket in place is controlled by the control cable.
6. The self-installation construction method of the ultra-large jacket according to claim 3, wherein the floating assembly comprises a buoyancy tank and a plurality of symmetrically arranged stress structure plates arranged on the buoyancy tank, and the sliding grooves are arranged on the stress structure plates.
7. The self-installation construction method of the ultra-large jacket according to claim 6, wherein the lifting members are tension jacks, and the number of the lifting members on each stressed structural plate is four.
8. The self-installation construction method of the ultra-large jacket according to claim 6, wherein a plurality of rollers are arranged on the top end of the preset track side by side in the transverse direction, and the rollers are abutted to the outer side wall of the buoyancy tank.
9. The self-installation construction method of the ultra-large jacket according to claim 6, wherein the bottom ends of the legs of the jacket are provided with lifting lugs.
10. The self-installation construction method of the ultra-large jacket according to claim 9, wherein a prepared hole is formed in the stressed structural plate, and one end of the pulling rope passes through the prepared hole and then is connected with the lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194693.1A CN110924372A (en) | 2019-11-28 | 2019-11-28 | Self-installation construction method of ultra-large jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194693.1A CN110924372A (en) | 2019-11-28 | 2019-11-28 | Self-installation construction method of ultra-large jacket |
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| Publication Number | Publication Date |
|---|---|
| CN110924372A true CN110924372A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911194693.1A Pending CN110924372A (en) | 2019-11-28 | 2019-11-28 | Self-installation construction method of ultra-large jacket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467365A (en) * | 2022-09-30 | 2022-12-13 | 华电重工股份有限公司 | Installation method of overwater booster station foundation |
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| US3736756A (en) * | 1971-11-03 | 1973-06-05 | Exxon Co | Method and apparatus for assembling an offshore structure |
| US3857247A (en) * | 1974-02-06 | 1974-12-31 | Raymond Int Inc | Offshore tower erection technique |
| CN101881148A (en) * | 2010-06-29 | 2010-11-10 | 中国海洋石油总公司 | Jacket riser mounting method and special riser component thereof |
| CN103410133A (en) * | 2013-08-20 | 2013-11-27 | 中国海洋石油总公司 | Marine installation method of deepwater jacket by using air sac |
| CN105782568A (en) * | 2016-03-29 | 2016-07-20 | 中国海洋石油总公司 | Mounting method of stand tube and protection tube |
| CN106223668A (en) * | 2016-09-11 | 2016-12-14 | 中国电建集团华东勘测设计研究院有限公司 | A kind of offshore boosting station being applicable to floating expelling pathogens by strengthening vital QI installation |
-
2019
- 2019-11-28 CN CN201911194693.1A patent/CN110924372A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3736756A (en) * | 1971-11-03 | 1973-06-05 | Exxon Co | Method and apparatus for assembling an offshore structure |
| US3857247A (en) * | 1974-02-06 | 1974-12-31 | Raymond Int Inc | Offshore tower erection technique |
| CN101881148A (en) * | 2010-06-29 | 2010-11-10 | 中国海洋石油总公司 | Jacket riser mounting method and special riser component thereof |
| CN103410133A (en) * | 2013-08-20 | 2013-11-27 | 中国海洋石油总公司 | Marine installation method of deepwater jacket by using air sac |
| CN105782568A (en) * | 2016-03-29 | 2016-07-20 | 中国海洋石油总公司 | Mounting method of stand tube and protection tube |
| CN106223668A (en) * | 2016-09-11 | 2016-12-14 | 中国电建集团华东勘测设计研究院有限公司 | A kind of offshore boosting station being applicable to floating expelling pathogens by strengthening vital QI installation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115467365A (en) * | 2022-09-30 | 2022-12-13 | 华电重工股份有限公司 | Installation method of overwater booster station foundation |
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