CN102477733B - Installation method for integrally dragging cantilever beam onto platform - Google Patents
Installation method for integrally dragging cantilever beam onto platform Download PDFInfo
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- CN102477733B CN102477733B CN201010561296.6A CN201010561296A CN102477733B CN 102477733 B CN102477733 B CN 102477733B CN 201010561296 A CN201010561296 A CN 201010561296A CN 102477733 B CN102477733 B CN 102477733B
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- semi girder
- cantilever beam
- track
- platform
- upturned portion
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Abstract
The invention discloses an installation method for integrally dragging a cantilever beam onto a platform, which comprises the following steps of: independently constructing a track at the tilted part in a lower slide way at the bow end of the cantilever beam; integrally constructing the cantilever beam, and sealing the track at the tilted part in the installation position of the cantilever beam in a horizontal mode; moving the cantilever beam onto a temporary slide way, and integrally dragging the cantilever beam onto the platform by utilizing a traction mechanism; and after the cantilever beam is dragged in place, dismantling the sealing component, lifting the track at the tilted part in the horizontal state to be in a tilted state by utilizing a lifting device, and fixing the track by welding. Through the method disclosed by the invention, the cantilever beam can be manufactured integrally on the land, and all devices are installed in place before the cantilever beam is folded, thereby greatly ensuring the construction integrality of the cantilever beam. A tilted slide track is flattened in advance before being dragged onto the platform, thereby being convenient for passing through a HOLDDOWN device. Simultaneously, the construction accuracy is convenient to control in integral construction of the cantilever beam. The dragging installation can shorten the construction cycle and is safe and reliable. The installation method disclosed by the invention has obvious economic benefit.
Description
Technical field
The present invention relates to ocean engineering field, more particularly, relate to the mounting method of semi girder in Offshore Platform Construction process.
Background technology
The self-elevating drilling platform of MSC design, its cantilever beam structures pattern is special, and move mode is also very different with the semi girder of other Chevron Research Company (CRC)s.This semi girder lower railway bow end upwarps pattern, and rig floor and semi girder main body are fixed.Semi girder is overall except can carrying out longitudinal direction (X-direction) and moving, and can also carry out transverse direction (Y-direction) and move.
The semi girder that current employing MSC technology is built is all be divided into 2 to 3 segmentations to build, and then utilizes crane lifting upper mounting plate to close up.Adopt above-mentioned building technology, the integrality of semi girder when upper mounting plate cannot ensure, closes up, construction period is long, and semi girder construction precision is difficult to control.
If the technology dragged after adopting semi girder integral constructing is constructed, main difficulty is because semi girder bow end lower railway is for upwarping pattern, and it upwarps the open height of height considerably beyond HOLDDOWN seat.According to dragging technology normally, semi girder upwarps track cannot pass this structure, drags and cannot implement.
Summary of the invention
Semi girder rig floor and the semi girder of MSC design are an entirety, and rig floor can not move left and right on a cantilever beam, and semi girder can move integrally in longitudinal direction (X-direction) and horizontal (Y-direction).Under semi girder, slippage panel is not a straight track, but bow end band has the track upwarping arc.The present invention, mainly for this type of semi girder, drags a kind of technology of upper mounting plate after inventing this type of semi girder land integral constructing.The present invention is intended to solve the problem, develop a kind of completely newly drag technology, adopt this technology, semi girder integral constructing can be realized, on the basis of integrality ensureing its structure and equipment, realize smoothly dragging.The present invention is relevant a series of construction technology that the semi girder entirety moved integrally for the X-Y direction adopting MSC technology to build drags upper mounting plate.
In order to achieve the above object, the invention provides the overall mounting method dragged to platform of a kind of semi girder, comprise the steps:
Upturned portion track in S1, independent construction semi girder bow end glide path; The V-type plate that described upturned portion track comprises the main riser of vertical setting, described main riser both sides are arranged, and the lower slippage orbital plane plate that described main riser lower horizontal is arranged.Semi girder bow end lower railway (upwarping sliding rail) is as independent structure manufacture.
S2, after the integral constructing semi girder of bank, by step S1 obtain upturned portion track utilize fixed part in a horizontal manner sealing in the installation site of described semi girder, now, between described upturned portion track and described semi girder, there is an open-width district.
In this step, all structures of semi girder and equipment all install end, and these structures and equipment mainly comprise: rig floor, derrick, moon pool, all drilling equipment bags, all pipings and cable.
Open-width district refers to the aperture slots that the upturned portion track (now arranging with level) that should upwarp setting leaves between upturned portion track and semi girder body, now utilize interim sealing device sealing between open-width district and semi girder, do not weld before semi girder drags.
S3, at sea by the platform of described semi girder to be installed realize station stake;
S4, lay and be used for the interim slideway of semi girder movement, the position of the platform that described interim slideway is extended in step S3 by bank described semi girder to be installed;
S5, the semi girder of step S2 to be moved on described interim slideway, haulage gear is set; Described interim slideway and haulage gear is utilized to drag to the position to be installed on described platform by described semi girder entirety;
After S6, described semi girder drag and put in place, removing on described upturned portion track for being fixed to the fixed part of described semi girder, then utilizing lifting appliance by the described upturned portion lifting track of level to upwarping state, and by being welded and fixed.
Utilizing the lifting of lifting appliance to realize upturned portion track in step S6, be provided with lifting suspension ring in the front end of upturned portion track, and the both sides correspondence being positioned at upturned portion track arranging multiple suspension ring, to reach the object promoted smoothly.
In addition, comprise sealing for the fixed part of sealing upturned portion track in above-mentioned steps S2 and be separately fixed at the body side of described semi girder and the sealing horse plate of described upturned portion track sidepiece in both sides, open-width district, and be connected to the sealing channel-section steel between described upturned portion track and the lower decks of described semi girder.Under preferred embodiment, the slideway relying on rolling friction to realize selected by the interim slideway in step S4; Haulage gear in step S5 selects winch.
The present invention provides a kind of brand-new construction technology to the semi girder that the X-Y direction adopting MSC technology to build moves integrally.Adopt this technology, can be made by semi girder complete in the land stage, all devices is all in place before semi girder closes up, and ensure that the integrality that semi girder is built greatly.By semi girder bow end glide path (upwarping sliding rail) open-width district when dragging upper mounting plate, being set level in advance, being convenient to upwarp track through HOLDDOWN device.Integral constructing is convenient to the construction precision controlling semi girder simultaneously.Drag the construction period that semi girder upper mounting plate significantly can shorten platform, and safe and reliable, there is the economic benefit of highly significant.
Accompanying drawing explanation
Fig. 1 is semi girder bow end glide path (upwarping track) open-width district stereogram;
Fig. 2 is that semi girder bow end glide path sets level post gap schematic diagram;
Fig. 3 is after glide path is set level and horizontal datum gap figure;
Fig. 4 is the interim sealing schematic diagram of semi girder lower railway and lower platform;
Fig. 5 is the schematic diagram of the interim sealing another way of semi girder lower railway and lower platform;
Fig. 6 is the structure for amplifying schematic diagram of side-looking state in M place in Fig. 5;
Fig. 7 is the mounting method construction process figure that semi girder of the present invention entirety drags to platform;
Fig. 8 is the Construction State figure that semi girder entirety drags.
Detailed description of the invention
With reference to figure 8, flow process as shown in Figure 7, illustrates that semi girder of the present invention entirety drags the mounting method to platform, comprises the steps:
Upturned portion track in step 1, independent construction semi girder bow end glide path.Accompanying drawing 1 is the semi girder lower railway structure that bow end (upwarping sliding rail) open-width district builds separately, and this structure entirety after whole welding job terminates carries out machine.This structure mainly comprises lower slippage orbital plane plate 1, the primary structures such as main riser 2 and V-type plate 3.
Step 2, after the integral constructing semi girder of bank, upturned portion track is utilized fixed part in a horizontal manner sealing in the installation site of semi girder, now, between described upturned portion track and described semi girder, there is an open-width district.
Semi girder overall structure and equipment comprise derrick, the moon pool 21 of lower extension, all pipings and cable, drilling equipment.After independent construction upturned portion track, interim sealing on a cantilever beam, drags front flat condition and arrange.
In accompanying drawing 2 and Fig. 3, dash area is the Shou Duan open-width district after setting level.Its clear area, top is before semi girder drags, the gap occurred after setting level open-width district.The difference in height upwarping the pre-reference line of slippage panel after lower railway is set level is described in Fig. 3.Adopt technique, the upwarping panel and can realize smoothly passing through HOLDDOWN seat of semi girder.Specifically, as Fig. 2 and Fig. 3, between the main riser 5 of semi girder and described upturned portion track 4 (lower skateboard of semi girder bow end), there is the gap 6 (open-width district) of an opening.Interim sealing when open-width district 6 drags.In Fig. 2 and Fig. 3, label A represents horizontal location reference line, and B represents semi girder lower panel reference line, and label 7 is semi girder glide path web, and label 9 is semi girder glide path slippage panel.L
1and L
3for peak open-width district, gap is 25mm, L
2for minimum point open-width district, gap is 10mm.As Figure 4-Figure 6, sealing is in the mode of semi girder in a horizontal manner by upturned portion track to utilize temporary fixed parts, and in figure, shadow region is the upturned portion track 12 temporarily set level.Interim sealing is formed primarily of sealing horse plate 11, sealing channel-section steel 10.Sealing horse plate 11 is two pieces, front and back in side, and sealing channel-section steel 10 is arranged on the lower railway and lower decks set level temporarily.Adopt this sealing mode, when ensureing safety, all devices that can meet on semi girder lower decks is in place.In addition, in Fig. 4 and Fig. 5, label H represents pipe holder deck.
Step 3, at sea by the platform of described semi girder to be installed realize station stake.This step can select ocean engineering platform in prior art to realize any one mode of stake location, marine station.
Step 4, laying are used for the interim slideway of semi girder movement, the position of the platform that described interim slideway is extended in step 3 by bank described semi girder to be installed.In shipbuilding field, under hull, water or stage+module have extensively used slide assemblies, can select the slideway mode of prior art, the slideway of the preferred rolling friction mode of the interim slideway of the present invention.
Step 5, the semi girder of step S2 to be moved on described interim slideway, haulage gear is set; Described interim slideway and haulage gear is utilized to drag described semi girder entirety to the position to be installed on described platform.Under preferred embodiment, haulage gear selects winch
After step 6, described semi girder drag and put in place.Removing on described upturned portion track for being fixed to the fixed part of described semi girder, then utilizing lifting appliance by the described upturned portion lifting track of level to upwarping state, and by being welded and fixed.
As shown in Figure 4 and Figure 5, for ease of being in place after dragging by the lower railway set level, lifting suspension ring 13 installed by semi girder and upturned portion track.Utilize these suspension ring, the semi girder lower railway set level can conveniently be in place.
In Fig. 8, label 21 represents the moon pool on semi girder, and label 22 represents interim slideway, and label D is ground, label E is for building Pu Dun district, label F is that land drags district, and label G is harbour, and label 23 represents spacing pier, label 24 is platform, label 25 is slip support abutment, and label 26 is the interim slideway in deck, and arrow K represents semi girder glide direction.
Adopt technique, can ensure that in semi girder, all devices can all be installed, the integrality of semi girder can not be affected due to the interim sealing of part lower railway.The open-width district simultaneously set level when not utilizing crane equipment, can be safe and efficient promoted contraposition, constructability.Semi girder bow end lower railway (upwarping sliding rail) open-width district, when dragging upper mounting plate, is set level in advance, is convenient to upwarp track through HOLDDOWN device.The lower railway set level utilizes interim frock to be locked on semi girder.Interim sealing frock is set by fixing for semi girder lower platform location simultaneously, ensures that all devices on lower platform is in place.After semi girder drags and puts in place, after utilizing the suspension ring of bottle gouard moved by hands and setting to be promoted certain altitude, realize upwarping.The present invention is the application example first semi girder of the CJ series platform of MSC design being dragged upper mounting plate in the world.Adopt this technology, the integrality that semi girder is built can be ensured, significantly shortening production cycle, remarkable in economical benefits, there is high application value.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. semi girder entirety drags the mounting method to platform, it is characterized in that, comprises the steps:
Upturned portion track in S1, independent construction semi girder bow end glide path;
Described upturned portion track comprises the main riser (2) of vertical setting, the V-type plate (3) of described main riser (2) both sides setting, and the lower slippage orbital plane plate (1) that described main riser (2) lower horizontal is arranged;
S2, after the integral constructing semi girder of bank, by step S1 obtain upturned portion track utilize fixed part in a horizontal manner sealing in the installation site of described semi girder, now, between described upturned portion track and described semi girder, there is an open-width district;
S3, the platform realizing described semi girder to be installed are at sea stood stake;
S4, lay and be used for the interim slideway of semi girder movement, the position of the platform that described interim slideway is extended in step S3 by bank described semi girder to be installed;
S5, the semi girder of step S2 to be moved on described interim slideway, haulage gear is set; Described interim slideway and haulage gear is utilized to drag to the position to be installed on described platform by described semi girder entirety;
After S6, described semi girder drag and put in place, removing on described upturned portion track for being fixed to the fixed part of described semi girder, then utilizing lifting appliance by the described upturned portion lifting track of level to upwarping state, and by being welded and fixed.
2. semi girder entirety drags the mounting method to platform according to claim 1, it is characterized in that, the front end of described upturned portion track is provided with and promotes suspension ring (13).
3. semi girder entirety drags the mounting method to platform according to claim 2, it is characterized in that, fixed part described in step S2 comprises sealing and is separately fixed at the body side of described semi girder and the sealing horse plate (11) of described upturned portion track sidepiece in both sides, open-width district, and is connected to the sealing channel-section steel (10) between described upturned portion track and the lower decks of described semi girder.
4. semi girder entirety drags the mounting method to platform according to claim 3, and it is characterized in that, the interim slideway in step S4 is rolling friction type slideway; Haulage gear in step S5 selects winch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010561296.6A CN102477733B (en) | 2010-11-26 | 2010-11-26 | Installation method for integrally dragging cantilever beam onto platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010561296.6A CN102477733B (en) | 2010-11-26 | 2010-11-26 | Installation method for integrally dragging cantilever beam onto platform |
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| CN102477733A CN102477733A (en) | 2012-05-30 |
| CN102477733B true CN102477733B (en) | 2014-12-31 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420453B (en) * | 2013-08-21 | 2016-06-01 | 中集海洋工程研究院有限公司 | The overall folding method of a kind of self-elevating drilling platform cantilever beam |
| CN104943819B (en) * | 2014-03-25 | 2017-06-16 | 上海外高桥造船有限公司 | Cantilever beam two-part method of construction |
| CN104802924B (en) * | 2014-05-27 | 2018-04-03 | 烟台中集来福士海洋工程有限公司 | Cantilever beam top layer pipe deck and its method of construction |
| CN104652393B (en) * | 2015-01-15 | 2016-08-17 | 山海关船舶重工有限责任公司 | The removal of a kind of cantilever beam entirety and the method retracting platform |
| CN104805819B (en) * | 2015-03-17 | 2017-03-08 | 中集海洋工程研究院有限公司 | The folding method of cantilever beam |
| CN105401887B (en) * | 2015-11-16 | 2018-02-13 | 南通长青沙船舶工程有限公司 | A kind of drilling well bag derrick large scale equipment pre-installs method |
| FR3062407B1 (en) * | 2017-02-02 | 2019-04-05 | Technip France | METHOD FOR MOUNTING AN INSTALLATION INTENDED TO BE PLACED IN A WATER EXTENDER |
| NL2019115B1 (en) * | 2017-06-23 | 2019-01-07 | Gustomsc Resources Bv | Seafastening of a cantilever on a mobile offshore platform |
| CN108487213B (en) * | 2018-03-16 | 2019-11-15 | 南通振华重型装备制造有限公司 | A kind of self-elevating drilling platform cantilever beam girder method of construction |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4973198A (en) * | 1989-12-28 | 1990-11-27 | Shell Oil Company | Offshore drilling rig transfer |
| NO319093B1 (en) * | 1997-08-29 | 2005-06-20 | Marine Structure Consul | Drilling rig |
| CN1687533A (en) * | 2005-05-10 | 2005-10-26 | 大连理工大学 | Movable bracket of cantilever beam on platform of drilling for oil |
| CN201132952Y (en) * | 2007-12-04 | 2008-10-15 | 大连船舶重工集团有限公司 | High- accuracy large-sized socle girder |
| CN101806053A (en) * | 2010-05-17 | 2010-08-18 | 大连船舶重工集团有限公司 | Integral installation method of cantilever beams of self lifting type well drilling platform |
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2010
- 2010-11-26 CN CN201010561296.6A patent/CN102477733B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4973198A (en) * | 1989-12-28 | 1990-11-27 | Shell Oil Company | Offshore drilling rig transfer |
| NO319093B1 (en) * | 1997-08-29 | 2005-06-20 | Marine Structure Consul | Drilling rig |
| CN1687533A (en) * | 2005-05-10 | 2005-10-26 | 大连理工大学 | Movable bracket of cantilever beam on platform of drilling for oil |
| CN201132952Y (en) * | 2007-12-04 | 2008-10-15 | 大连船舶重工集团有限公司 | High- accuracy large-sized socle girder |
| CN101806053A (en) * | 2010-05-17 | 2010-08-18 | 大连船舶重工集团有限公司 | Integral installation method of cantilever beams of self lifting type well drilling platform |
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| CN102477733A (en) | 2012-05-30 |
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