CN111114715A - Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge - Google Patents
Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge Download PDFInfo
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- CN111114715A CN111114715A CN202010147014.1A CN202010147014A CN111114715A CN 111114715 A CN111114715 A CN 111114715A CN 202010147014 A CN202010147014 A CN 202010147014A CN 111114715 A CN111114715 A CN 111114715A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
- B63C3/08—Tracks on slipways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/28—Barges or lighters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Ship Loading And Unloading (AREA)
Abstract
The invention provides a launching method of a 38000t semi-submersible barge for building an ocean platform on a slipway, which comprises the steps of laying a lower slideway when the platform reaches a launching state, installing pulling and moving equipment, corresponding platform pulling lugs to semi-submersible barge pulling lugs one by one, laying an upper slideway on the lower slideway, falling the platform on the upper slideway, threading a steel wire rope, pulling and moving the platform, preparing before diving and separating, discharging ballast water of the semi-submersible barge, pulling back to a berthing wharf and finishing launching the platform. The method comprises the steps that a 35t pulling winch arranged on a semi-submersible barge pulls a platform on a slipway to the semi-submersible barge through a pulling slideway through a steel wire rope, the semi-submersible barge is separated after being submerged, and the launching of the platform on the slipway is completed. The number of the handles of the 350t5 handle pulley wound steel wire rope is selected according to the weight of the platform. The slipway is pulled to move the water, so that the difficulty in launching a platform and a ship built on a slipway is solved, and the devices such as the sliding slipway, the winch and the like can be repeatedly used.
Description
Technical Field
The invention relates to operations of laying a launching slideway, installing pull lugs, arranging pull-moving equipment, penetrating and pulling a steel wire rope, pulling and moving a platform, diving and separating and the like after a large-tonnage structure of large-scale engineering is built on a horizontal slipway, in particular to a launching method of a 38000t semi-submersible barge during building an ocean platform on the slipway.
Background
With the development of industry, the consumption of petroleum energy is more and more, and the exploration and exploitation of marine petroleum are more and more important. Many shipyards at home and abroad compete to build the self-elevating offshore drilling platform, the dock building period is generally 15 months, the launching weight reaches 15000t, the docking period of many shipyards cannot meet the production plan, the problem of dock tension can be solved by building a horizontal slipway, but platform launching is a difficult problem which cannot be solved by many shipyards after the slipway is built, most of existing slipway launching methods adopt a module vehicle group to carry the platform on the back of a semi-submersible barge, and the semi-submersible barge is separated from the submerged barge, but because the platform is large in size and weight, the number of the required module vehicle groups is very large, and the cost of purchasing or renting the module vehicles is very high.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In order to solve the defects, the invention aims to provide a launching method of a 38000t semi-submersible barge for building an ocean platform on a slipway, which solves the problem that the platform built on the slipway and a ship are difficult to launch, and equipment such as a pulling slide way, a pulling winch and the like can be repeatedly used.
In order to achieve the aim, the invention provides a launching method of a 38000t semi-submersible barge for building an ocean platform on a slipway, which comprises the following steps:
(1) the platform is built horizontally and folded to reach a launching state: the launching weight of the platform is 14800t, sand bags are paved under 3 pile shoes, the height is about 1.5m, the horizontal slipway is prevented from being crushed when the platform lifts the piles, and the platform is lifted to the position, which is about 3m away from the ground of the horizontal slipway, of the bottom plate of the platform by using a platform lifting mechanism;
(2) laying a plurality of lower slipway parts of the launching slipways on a horizontal slipway right below the platform along the launching pulling direction of the platform;
(3) installing pulling and moving equipment: 6 pull lugs of 350t, 6 pull winches of 35t, 12 single-handle guide pulleys of 100t and 6 rope containers are arranged on a 38000 semi-submersible barge close to a bow deck;
(4) 6 200t launching pull lugs are arranged at a platform stern dry towing point and used for pulling the platform on a 38000t semi-submersible barge, and the platform stern pull lugs are in one-to-one correspondence with 350t pull lugs on the 38000t semi-submersible barge;
(5) laying an upper slideway on a lower slideway right below the platform, connecting two adjacent upper slideways together by using a stacking plate, laying a skid on the upper slideway, and connecting the skid and the upper slideway together by using a stud;
(6) the platform is dropped on the upper slide way, all the pile shoes are retracted into the hull, a 350t5 handle tackle group is hung on a 200t pull lug at the stern of the platform, and a 350t5 handle tackle group is hung on a 350t launching pull lug at 38000t semi-submerged barge;
(7) threading a steel wire rope: winding the steel wire ropes in the rope container on a 350t pulley block of the semi-submersible barge and a 350t pulley block at the stern of the platform, fully winding 5 handles, and connecting two adjacent steel wire ropes by using steel wire rope clamps;
(8) pulling and moving the platform: the platform is pulled and moved to a 38000t semi-submersible barge by 6 35t draw-move winches through a movable pulley block at a speed of 10 times;
(9) preparation before diving separation: after the lower water platform is pulled and moved to the right position, the upper slideway and the lower slideway are fixed together. Dismantling pulling equipment on the 38000t semi-submersible barge, cutting off a 200t launching pull lug at the stern of the platform, and repairing paint;
(10) submerging and separating: dragging a 38000t semi-submersible barge to a submerging area, anchoring and fixing with a cable, dragging a cable to a platform by a dragging wheel, submerging the semi-submersible barge until the separation distance between the platform and an upper slideway reaches more than 500mm, and dragging the platform to a station pile in a specified area away from the semi-submersible barge by the dragging wheel;
(11) and discharging ballast water from the 38000t semi-submersible barge, dragging the semi-submersible barge back to the berthing wharf, and finishing launching the platform.
Further, in the step (2), the number of the waterslides is 7, the waterslides are 0m, 9m, 16m and 26.45m from the center of the platform, and the waterslides are paved from the position below the platform to the position on a 38000 semi-submersible barge.
Further, in the step (5), a polyethylene wear-resistant block is installed on the surface of the upper sliding way, which is in contact with the lower sliding way, when the upper sliding way is manufactured.
Further, in the step (5), the upper surface of the lower slideway is coated with grease, so that the sliding friction coefficient between the upper slideway and the lower slideway during pulling is reduced.
The invention has the beneficial effects that: the method comprises the steps that a 35t pulling winch arranged on a semi-submersible barge pulls a platform on a slipway to the semi-submersible barge through a pulling slideway through a steel wire rope, the semi-submersible barge is separated after being submerged, and the launching of the platform on the slipway is completed. The number of the handles of the 350t5 handle pulley wound steel wire rope is selected according to the weight of the platform. The slipway is pulled to move the water, so that the difficulty in launching a platform and a ship built on a slipway is solved, and the devices such as the sliding slipway, the winch and the like can be repeatedly used. The problem of launching of products such as ocean platforms and ships after building the slipway is solved, and shipyard dock resources are saved.
Drawings
Figure 1 is a layout of the glidepath of the present invention.
Fig. 2 is a layout view of the upper run of the present invention.
Fig. 3 is a layout view of the pulling and moving apparatus of the present invention.
FIG. 4 is a schematic structural view of the pull-down chute of the present invention.
Fig. 5 is a schematic structural view of the pull slide of the present invention.
FIG. 6 is a drawing overview of the present invention.
Wherein: 1. the device comprises a launching platform, 2, 38000t semi-submersible barges, 3, a glidepath, 4, a platform stern dry tow, 5 and 200t launching pull lugs, 6 and 350t 5-handle tackle blocks, 7, an upper slideway, 8, a rope container, 9 and 35t pulling winches, 10 and 100t single-handle guide tackles, 11 and 350t launching pull lugs, 12 and wear-resistant blocks.
Detailed Description
In order to further the understanding of the present invention, the following detailed description of the present invention is given, and the examples are only for the purpose of explaining the present invention and do not limit the scope of the present invention.
The invention relates to a launching method of an ocean platform built on a horizontal slipway by utilizing a pulling slide way and a 38000t semi-submerged barge. As shown in figure 1, 7 gliders are paved from the lower part of the platform to a 38000t deck along the pulling direction of the platform, and the paving length of the gliders on the deck of the semi-submersible barge is determined according to the final position of the platform after barge. Before laying the lower slide way, a sand bag is laid under three pile shoes of the platform, and the platform is lifted by using a platform lifting device, so that the bottom plate of the platform is about 3m away from the slipway. The levelness of the slipways is adjusted by adding the cushion blocks between the slipways and the slipway, so that 7 slipways are positioned at the same horizontal height, and two adjacent slipways in each slipway are connected by using a stacking plate, so that each slipway is connected into a whole.
And 1# common base grease is coated on the upper surface of the lower slideway, so that the friction coefficient between the upper slideway and the lower slideway is reduced.
As shown in fig. 2 and 4, upper slideways are laid on the lower slideways right below the platform, two adjacent upper slideways are connected by a code plate, and the lower horizontal table moves forwards on the lower slideways along with the upper slideways during pulling. 6 launching pull lugs of 200t are arranged on a dry towing point at the stern of the platform, and a 5-handle tackle pulley group is hung on the pull lugs.
When the platform is manufactured by sliding upwards as shown in fig. 5, the contact surface of the upper slideway and the lower slideway is provided with the ultra-high molecular polyethylene wear-resistant block, so that the friction coefficient of the platform during pulling is reduced.
As shown in fig. 3, pulling equipment is arranged on the 38000t semi-submersible barge deck: 6 rope containers, 6 draw-move winches of 35t, 6 pull lugs of 350t and 12 single-handle guide pulleys of 100 t. The distance between the rope container and the pulling and moving winch is more than 10m, the distance between the pulling and moving winch and the guide pulley, and the distance between the guide pulley and the 350t pulling lug are more than 13 m.
As shown in figure 6, the platform on the slipway is pulled and moved onto the semi-submersible barge through a pulling and moving slideway by a 35t pulling and moving winch arranged on the semi-submersible barge through the traction of a steel wire rope, the semi-submersible barge is separated after being submerged, and the launching of the platform on the slipway is completed. The number of the handles of the 350t5 handle pulley wound steel wire rope is selected according to the weight of the platform. The slipway is pulled to move the water, so that the difficulty in launching a platform and a ship built on a slipway is solved, and the devices such as the sliding slipway, the winch and the like can be repeatedly used. The problem of launching of products such as ocean platforms and ships after building the slipway is solved, and shipyard dock resources are saved.
Claims (4)
1. A launching method of an ocean platform by utilizing a 38000t semi-submersible barge during building of a slipway is characterized by comprising the following steps:
(1) the platform is built horizontally and folded to reach a launching state: the launching weight of the platform is 14800t, sand bags are paved under 3 pile shoes, the height is about 1.5m, the horizontal slipway is prevented from being crushed when the platform lifts the piles, and the platform is lifted to the position, which is about 3m away from the ground of the horizontal slipway, of the bottom plate of the platform by using a platform lifting mechanism;
(2) laying a plurality of lower slipway parts of the launching slipways on a horizontal slipway right below the platform along the launching pulling direction of the platform;
(3) installing pulling and moving equipment: 6 pull lugs of 350t, 6 pull winches of 35t, 12 single-handle guide pulleys of 100t and 6 rope containers are arranged on a 38000 semi-submersible barge close to a bow deck;
(4) 6 200t launching pull lugs are arranged at a platform stern dry towing point and used for pulling the platform on a 38000t semi-submersible barge, and the platform stern pull lugs are in one-to-one correspondence with 350t pull lugs on the 38000t semi-submersible barge;
(5) laying an upper slideway on a lower slideway right below the platform, connecting two adjacent upper slideways together by using a stacking plate, laying a skid on the upper slideway, and connecting the skid and the upper slideway together by using a stud;
(6) the platform is dropped on the upper slide way, all the pile shoes are retracted into the hull, a 350t5 handle tackle group is hung on a 200t pull lug at the stern of the platform, and a 350t5 handle tackle group is hung on a 350t launching pull lug at 38000t semi-submerged barge;
(7) threading a steel wire rope: winding the steel wire ropes in the rope container on a 350t pulley block of the semi-submersible barge and a 350t pulley block at the stern of the platform, fully winding 5 handles, and connecting two adjacent steel wire ropes by using steel wire rope clamps;
(8) pulling and moving the platform: the platform is pulled and moved to a 38000t semi-submersible barge by 6 35t draw-move winches through a movable pulley block at a speed of 10 times;
(9) preparation before diving separation: after the lower water platform is pulled and moved to the right position, the upper slideway and the lower slideway are fixed together. Dismantling pulling equipment on the 38000t semi-submersible barge, cutting off a 200t launching pull lug at the stern of the platform, and repairing paint;
(10) submerging and separating: dragging a 38000t semi-submersible barge to a submerging area, anchoring and fixing with a cable, dragging a cable to a platform by a dragging wheel, submerging the semi-submersible barge until the separation distance between the platform and an upper slideway reaches more than 500mm, and dragging the platform to a station pile in a specified area away from the semi-submersible barge by the dragging wheel;
(11) and discharging ballast water from the 38000t semi-submersible barge, dragging the semi-submersible barge back to the berthing wharf, and finishing launching the platform.
2. The method for launching a 38000t semi-submersible barge by constructing a sea platform on a ship berth according to claim 1, wherein the method comprises the following steps: in the step (2), the number of the waterslides is 7, the number of the waterslides is 0m, plus or minus 9m, plus or minus 16m, plus or minus 26.45m from the center of the platform, and the waterslides are paved from the position below the platform to the position on a 38000 semi-submersible barge.
3. The method for launching a 38000t semi-submersible barge by constructing a sea platform on a ship berth according to claim 1, wherein the method comprises the following steps: in the step (5), when the upper sliding way is manufactured, a polyethylene wear-resistant block is arranged on the surface of the upper sliding way, which is in contact with the lower sliding way.
4. The method for launching a 38000t semi-submersible barge by constructing a sea platform on a ship berth according to claim 1, wherein the method comprises the following steps: in the step (5), lubricating grease is coated on the upper surface of the lower slideway, so that the sliding friction coefficient between the upper slideway and the lower slideway during pulling is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010147014.1A CN111114715A (en) | 2020-03-05 | 2020-03-05 | Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010147014.1A CN111114715A (en) | 2020-03-05 | 2020-03-05 | Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge |
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| CN111114715A true CN111114715A (en) | 2020-05-08 |
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| CN202010147014.1A Pending CN111114715A (en) | 2020-03-05 | 2020-03-05 | Launching method of offshore platform on building berth by utilizing 38000t semi-submersible barge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623146A (en) * | 2020-12-09 | 2021-04-09 | 大连中远海运重工有限公司 | Towing process method for ship living area block |
| CN113525627A (en) * | 2021-08-10 | 2021-10-22 | 烟台中集来福士海洋工程有限公司 | Launching method of large ship |
| CN116238664A (en) * | 2023-05-12 | 2023-06-09 | 广州文船重工有限公司 | Floating type offshore wind power platform launching method |
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| CN102582800A (en) * | 2012-02-27 | 2012-07-18 | 大连理工大学 | Floating state controller of joint-load device for land and sea connection transportation and working method thereof |
| CN203158854U (en) * | 2013-03-12 | 2013-08-28 | 中交第二航务工程勘察设计院有限公司 | Dragging sliding device |
| CN103991511A (en) * | 2014-05-22 | 2014-08-20 | 中国石油大学(华东) | Ocean platform transportation device and transportation method |
| KR20150023182A (en) * | 2013-08-23 | 2015-03-05 | 현대중공업 주식회사 | Dock used for carry for barge offshore platform building method |
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2020
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Patent Citations (5)
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|---|---|---|---|---|
| JPS54102793A (en) * | 1978-01-27 | 1979-08-13 | Hitachi Zosen Corp | Method of conveying out large structure |
| CN102582800A (en) * | 2012-02-27 | 2012-07-18 | 大连理工大学 | Floating state controller of joint-load device for land and sea connection transportation and working method thereof |
| CN203158854U (en) * | 2013-03-12 | 2013-08-28 | 中交第二航务工程勘察设计院有限公司 | Dragging sliding device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623146A (en) * | 2020-12-09 | 2021-04-09 | 大连中远海运重工有限公司 | Towing process method for ship living area block |
| CN112623146B (en) * | 2020-12-09 | 2022-12-06 | 大连中远海运重工有限公司 | Towing process method for ship living area block |
| CN113525627A (en) * | 2021-08-10 | 2021-10-22 | 烟台中集来福士海洋工程有限公司 | Launching method of large ship |
| CN116238664A (en) * | 2023-05-12 | 2023-06-09 | 广州文船重工有限公司 | Floating type offshore wind power platform launching method |
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Application publication date: 20200508 |