CN104943819B - Cantilever beam two-part method of construction - Google Patents
Cantilever beam two-part method of construction Download PDFInfo
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- CN104943819B CN104943819B CN201410114729.1A CN201410114729A CN104943819B CN 104943819 B CN104943819 B CN 104943819B CN 201410114729 A CN201410114729 A CN 201410114729A CN 104943819 B CN104943819 B CN 104943819B
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000465 moulding Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention discloses a kind of cantilever beam two-part method of construction.Cantilever beam includes a stem block and an afterbody block, the method comprising the steps of S1, a pair of draw-in groove bearings are positioned on a main hull, two pairs of guide type shoes are positioned and affixed with main hull on main hull；S2, one first slipping base of bottom for being located at the stem block is inserted in the draw-in groove of the draw-in groove bearing, it is and spacing in a setting position；S3, will be lifted to main hull with the stem block of the draw-in groove bearing, the draw-in groove bearing is embedded in the predeterminated position, while making first slipping base be inserted in the guide type shoe；S4, a load-bearing board member and a slideway board member be arranged in the draw-in groove；S5, install afterbody block.The method of the present invention changes the erection sequence of prior art, realizes just can be carried using conventional lifting and transporting equipment under the conditions of 76 meters of depressed places are wide and builds cantilever beam, and high precision, cost be small, short time limit.
Description
Technical field
The present invention relates to a kind of cantilever beam two-part method of construction.
Background technology
At present, at home and abroad in the presence of two kinds of cantilever beam methods of construction, one kind is integral constructing method, and one kind is three sections of construction
Method.Either integral constructing method or three sections of construction methods, cantilever beam will pass through two draw-in groove support bases and four in lifting
Guide support seat, this is higher to lifting requirements, and has certain risk, is easily damaged chute board.
The drawbacks of existing both cantilever beam methods of construction is：
First, in order that draw-in groove support base and guide support seat are installed on a cantilever beam, integral constructing method can only wait until main ship
After body fitting-out completes to plunge into the commercial sea, Over-size transport equipment and crane barge are recycled by one whole section of cantilever beam block transport to main hull.
However, these Over-size transport equipment of lifting and crane barge need a very big construction cost；And when main hull fitting-out is complete
Cantilever beam is refilled into after plunging into the commercial sea, extends whole shipbuilding period, and the daily rent of dock is very high, dock is used in turn
Rate is very low, and a large number of construction cost is increased again.
2nd, three sections of construction methods are since it is desired that weld twice slideway seam, its precision controlling high cost after tread flaking；While this scheme
It is required that the hatchway battening arrangement in cantilever beam can only be lifted on main hull, make whole shipbuilding period longer relative to integral constructing method,
Dock to be used in turn rate lower；Three sections of construction methods occupy limited deck resource simultaneously, are unfavorable for production.
Therefore, the equipment investment high cost of existing both cantilever beam methods of construction, production cost be high, production efficiency
It is low, and technological difficulty is big, is easily damaged chute board.
The content of the invention
The technical problems to be solved by the invention are to overcome the cantilever beam method of construction of prior art cannot be current
Realize that cantilever beam carries the defect built using conventional lifting and transporting equipment under the conditions of 76 meters of universal depressed places are wide, there is provided a kind of
Cantilever beam two-part method of construction.
The present invention is to solve above-mentioned technical problem by following technical proposals：
A kind of cantilever beam two-part method of construction, its feature is that a cantilever beam includes that a stem block and an afterbody are total
Section, the bottom of the stem block is provided with one first slipping base, and the bottom of the afterbody block is provided with one second slipping base,
The cantilever beam two-part method of construction is comprised the following steps：
S1, a pair of draw-in groove bearings are positioned on a main hull, and the position by the draw-in groove bearing on the main hull
Put and be demarcated as a predeterminated position, then remove the draw-in groove bearing；Position of the two pairs of guide type shoes of positioning on the main hull,
And the guide type shoe is fixedly connected on the main hull；
S2, first slipping base is inserted in a draw-in groove of the draw-in groove bearing, and limits the draw-in groove bearing
Position is in first slipping base；
S3, will be lifted to the main hull with the stem block of the draw-in groove bearing, make the draw-in groove bearing
The insertion predeterminated position, while making first slipping base be inserted in the guide type shoe；
S4, the draw-in groove bearing and the main hull are welded, then fill a load-bearing board member and a slideway board member
Enter in the draw-in groove, calibrate positioning precision；
S5, the afterbody block is lifted to the main hull, in order that first slipping base and described second
Slipping base point-blank, after calibrating the afterbody block and the positioning precision of the stem block and the main hull,
The stem block is integrally welded with the afterbody block.
It is preferred that first slipping base and second slipping base include some bottoms for being installed on the cantilever beam
The bearing in portion, the face that the top of the bearing is constituted constitutes a datum level, for positioning the draw-in groove bearing and the guiding
The position of bearing.
It is preferred that step S1 comprises the steps：
S11, after the completion of the draw-in groove bearing is prefabricated, the load-bearing board member and the slideway board member are placed in institute
State in draw-in groove, it is a component mark to measure and mark the position of the load-bearing board member and the slideway board member in the draw-in groove
Positioning is put, and then takes out the load-bearing board member and the slideway board member；
S12, the draw-in groove bearing is lifted on the main hull, the good draw-in groove bearing of mowing is on the main hull
Position surplus and with the good predeterminated position of sample punch mark, by draw-in groove bearing distancing；
S13, the guide type shoe is lifted on the main hull, is welded with the main hull after having good positioning.
It is preferred that step S2 comprises the steps：
S21, the most of moulding bed removed under the stem block and the afterbody block, only retain lacking for each block two ends
Then amount moulding bed will be removed using three-dimensional adjustment instrument as temporary support after the afterbody block jack-up；
S22, the tail end that the draw-in groove bearing normal state is placed on the stem block using crane, do interim solid with horse plate
Fixed support, makes the bottom of the draw-in groove bearing far from ground certain altitude；
S23, using two groups of unit heads being arranged under two curb girders of the stem block by the stem block top
Rise and move to and the draw-in groove bearing clamping.
It is preferred that step S3 comprises the steps：
S31, the stem block with the draw-in groove bearing is lifted into the main hull in a dock
Top, and adjust the central shaft of the stem block and overlapped with the center line of the main hull；
S32, the predeterminated position made on the draw-in groove bearing alignment main hull, then put the stem block
Put on the main hull, and using be placed between the stem block and the main hull at least one pair of temporary support seat come
Load-bearing and positioning；
S33, the position that the stem block is adjusted using oil pump, make the central shaft of the stem block and the main hull
Center line be completely superposed.
It is preferred that step S4 is further comprising the steps of：
Then S41, the adjustment draw-in groove bearing weld the draw-in groove bearing and the main hull to the predeterminated position
It is fixed；
S42, using stem block described in the oil pump jack-up, raise 30mm, plus another temporary support seat is withstood；
S43, the load-bearing board member and the slideway board member are put into and positioned to the component calibration position, verification
Precision is simultaneously welded；
S44, again use stem block described in oil pump jack-up, the stem block is put down.
It is preferred that step S5 is comprised the following steps：
S51, the afterbody block is hung on the main hull, in place afterwards with afterbody described in 4 250 tons of oil pump jack-up
Block；
S52, the overall linearity that the stem block and the afterbody block are adjusted using steel wire rope, and emphasis adjustment institute
State the overall linearity of the first slipping base and second slipping base；
S53, the integral level degree using stem block described in total station survey and the afterbody block, according to measurement result
Adjustment, until reaching design requirement；
S54, the completion stem block are welded with the whip stitch of the afterbody block.
It is preferred that step S3 and step S5 is realized using straddle truck.
It is preferred that the bearing is ball bearing or needle bearing.
It is preferred that being additionally provided with following steps after step S5：
S6, installation pull plate.
In the present invention, above-mentioned optimum condition can be combined on the basis of common sense in the field is met, and obtain final product of the invention
Each preferred embodiment.
Positive effect of the invention is：Cantilever beam two-part method of construction of the invention breaches existing cantilever
The thinking of beam method of construction, changes erection sequence of the draw-in groove support base on main hull and cantilever beam block, it is achieved thereby that
Construction cantilever beam can be just carried using conventional lifting and transporting equipment under the conditions of 76 meters of depressed places are wide, and ensures integral constructing essence
Degree, it is ensured that fitting-out is complete, greatly reduces construction cost, shortens construction period.
Brief description of the drawings
The schematic layout pattern that Fig. 1 builds for cantilever beam in one embodiment of the invention on construct platform.
Fig. 2 is schematic top plan view when stem block is not separated with afterbody block in one embodiment of the invention.
Fig. 3 is schematic front view when stem block is not separated with afterbody block in one embodiment of the invention.
Fig. 4 is that draw-in groove bearing will be inserted in schematic front view in stem block in one embodiment of the invention.
Fig. 5 is that draw-in groove bearing has been enclosed within schematic top plan view on stem block in one embodiment of the invention.
Fig. 6 is that draw-in groove bearing has been enclosed within partial structural diagram on stem block in one embodiment of the invention.
Fig. 7 be one embodiment of the invention in stem block from construct platform be transferred to dock when transfer path schematic diagram.
Fig. 8 is the schematic diagram that stem block is lifted to the main hull in the dock in one embodiment of the invention.
Fig. 9 is the schematic diagram that afterbody block is lifted to the main hull in the dock in one embodiment of the invention.
Figure 10 is the flow chart of cantilever beam two-part method of construction of the invention.
Specific embodiment
Enumerate preferred embodiment below, and become apparent from intactly illustrating the present invention with reference to accompanying drawing.
As shown in Fig. 1 and Figure 10, cantilever beam 2 is included in the He of a stem block 21 constructed in advance on a processing platform 1
One afterbody block 22.The both sides of the bottom of stem block 21 are provided with one first slipping base 210, the two of the bottom of afterbody block 22
Side is provided with one second slipping base.First slipping base 210 and second slipping base are series installations in cantilever beam 2
The ball bearing of bottom, in addition to this it is possible to be other types of bearing.The face structure that the top of the ball bearing is constituted
Into a datum level, for locating groove bearing 8 and the position of guide type shoe 9.The top of processing platform 1 is provided with straddle truck 3, so as to
Operation.To improve efficiency, two cantilever beams 2 can be simultaneously built on a processing platform 1.
A kind of cantilever beam two-part method of construction, it is comprised the following steps：
Step 1, a pair (i.e. two) draw-in groove bearings 8 are positioned on a main hull 10, and by draw-in groove bearing 8 in main hull
Location position on 10 is a predeterminated position, but draw-in groove bearing 8 should not be welded with main hull 10；Positioning two is led to (i.e. four)
To position of the bearing 9 on main hull 10, and it is directed to bearing 9 and is welded on main hull 10；Draw-in groove bearing 8 is provided with a draw-in groove
80, for limiting the up and down motion and side-to-side movement of the first slipping base 210 and second slipping base in draw-in groove 80；Lead
A groove is provided with to bearing 9, for limiting the left side of the first slipping base 210 and second slipping base in the groove
Right motion；
Step 2, the first slipping base 210 is inserted in draw-in groove 80, and make draw-in groove bearing 8 spacing in the first slipping base
On 210；
Step 3, will be lifted to main hull 10 with the stem block 21 of draw-in groove bearing 8, be embedded in draw-in groove bearing 8 described
Predeterminated position, while making the first slipping base 210 be inserted in guide type shoe 9；
Step 4, draw-in groove bearing 8 is welded with main hull 10, then a load-bearing board member and a slideway board member are installed
In draw-in groove 80, positioning precision is calibrated；
Step 5, afterbody block 22 is lifted to main hull 10, in order to ensure the first slipping base 210 and described second
Slipping base point-blank, after calibration afterbody block 22 and the positioning precision of stem block 21 and main hull 10, by stem
Block 21 is integrally welded with afterbody block 22.
Specifically, step 1 also comprises the steps：
After the completion of draw-in groove bearing 8 is prefabricated, the load-bearing board member and the slideway board member are placed in draw-in groove 80,
The position of the load-bearing board member and the slideway board member in draw-in groove 80 is measured and marked for a component calibration position, then
Take out the load-bearing board member and the slideway board member；
Then, draw-in groove bearing 8 is lifted on main hull 10, more than position of the good draw-in groove bearing 8 of mowing on main hull 10
Predeterminated position described in sample punch mark is measured and used, then draw-in groove bearing 8 is transferred from；
Then, it is directed to bearing 9 to be lifted on main hull 10, is welded with main hull 10 after having good positioning.
Specifically, step 2 comprises the steps：
The most of moulding bed under stem block 21 and afterbody block 22 is removed, only retains a small amount of moulding bed 4 at each block two ends
As temporary support, then will be removed after the jack-up of afterbody block 22 using three-dimensional adjustment instrument 6；
Then, the normal state of draw-in groove bearing 8 is placed on the tail end of stem block 21 using crane, interim fixed branch is done with horse plate
Support, makes height of the bottom of draw-in groove bearing 8 far from ground be 1855mm；
Then, using two groups of unit heads 5 being arranged under two curb girders of stem block 21 by the jack-up of stem block 21
And move to and the clamping of draw-in groove bearing 8.
Specifically, step 3 is comprised the following steps：
The stem block 21 with draw-in groove bearing 8 is lifted on the main hull 10 in dock 7 using straddle truck 3
Side, and adjust the central shaft of stem block 21 and overlapped with the center line of main hull 10；
Then, the predeterminated position for making draw-in groove bearing 8 be aligned on main hull 10, then slowly places stem block 21
On main hull 10, and using at least one pair of temporary support seat 12 being placed between stem block 21 and main hull 10 come load-bearing and
Positioning；
Then, using the position of oil pump fine setting stem block 21, in making the central shaft of stem block 21 and main hull 10
Heart line is completely superposed.
Specifically, step 4 is comprised the following steps：
Then with main hull 10 be welded and fixed draw-in groove bearing 8 by adjustment draw-in groove bearing 8 to the predeterminated position；
Then, using the oil pump jack-up stem block 21, raise 30mm, plus another temporary support seat 12 is withstood；
Then, the load-bearing board member and the slideway board member are put into the component calibration position, checking precision
And weld；
Then, stem block 21 is put down with oil pump jack-up stem block 21 again.
Specifically, step 5 is comprised the following steps：
Afterbody block 22 is hung on main hull 10, in place afterwards with 4 250 tons of oil pump jack-up afterbody block 22；
Then, using the overall linearity of the regulation of steel wire rope 11 stem block 21 and afterbody block 22, and emphasis adjustment the
The overall linearity of one slipping base 210 and second slipping base；
Then, using total station survey stem block 21 and the integral level degree of afterbody block 22, adjusted according to measurement result
Whole stem block 21 and afterbody block 22, until reaching design requirement；
Then, stem block 21 is completed to be welded with the whip stitch of afterbody block 22.
Specifically, following steps are additionally provided with after step 5：
Step 6, installation pull plate.Because if first installing according to a conventional method if dragging plate, stem block can be hindered
21 installation.
Although the foregoing describing specific embodiment of the invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of principle of the invention and essence, various changes or modifications can be made to these implementation methods, but these are changed
Protection scope of the present invention is each fallen within modification.
Claims (10)
1. a kind of cantilever beam two-part method of construction a, it is characterised in that cantilever beam includes a stem block and an afterbody block,
The bottom of the stem block is provided with one first slipping base, and the bottom of the afterbody block is provided with one second slipping base, institute
Cantilever beam two-part method of construction is stated to comprise the following steps：
S1, a pair of draw-in groove bearings are positioned on a main hull, and the location position by the draw-in groove bearing on the main hull
It is a predeterminated position, then removes the draw-in groove bearing；Position of the two pairs of guide type shoes of positioning on the main hull, and by institute
Guide type shoe is stated to be fixedly connected on the main hull；
S2, first slipping base is inserted in a draw-in groove of the draw-in groove bearing, and make the draw-in groove bearing spacing in institute
State in the first slipping base；
S3, will be lifted to the main hull with the stem block of the draw-in groove bearing, make the draw-in groove bearing insertion institute
Predeterminated position is stated, while making first slipping base be inserted in the guide type shoe；
S4, the draw-in groove bearing and the main hull welded, a load-bearing board member and a slideway board member are then loaded described
In draw-in groove, positioning precision is calibrated；
S5, the afterbody block lifted to the main hull, in order that first slipping base and the described second sliding base
Seat point-blank, after calibrating the afterbody block and the positioning precision of the stem block and the main hull, will be described
Stem block is integrally welded with the afterbody block.
2. cantilever beam two-part method of construction as claimed in claim 1, it is characterised in that first slipping base and described
Second slipping base includes the bearing of some bottoms for being installed on the cantilever beam, and the face that the top of the bearing is constituted is constituted
One datum level, the position for positioning the draw-in groove bearing and the guide type shoe.
3. cantilever beam two-part method of construction as claimed in claim 1, it is characterised in that step S1Comprise the steps：
S11, after the completion of the draw-in groove bearing is prefabricated, the load-bearing board member and the slideway board member are placed in the card
In groove, measure and mark the position of the load-bearing board member and the slideway board member in the draw-in groove to demarcate position for a component
Put, then take out the load-bearing board member and the slideway board member；
S12, the draw-in groove bearing is lifted on the main hull, position of the good draw-in groove bearing of mowing on the main hull
Surplus is put and with the good predeterminated position of sample punch mark, by draw-in groove bearing distancing；
S13, the guide type shoe is lifted on the main hull, welded with the main hull after having good positioning.
4. cantilever beam two-part method of construction as claimed in claim 3, it is characterised in that step S2Comprise the steps：
S21, the most of moulding bed removed under the stem block and the afterbody block, only retain a small amount of tire at each block two ends
Then frame will be removed using three-dimensional adjustment instrument as temporary support after the afterbody block jack-up；
S22, the draw-in groove bearing normal state is placed on using crane the tail end of the stem block, do interim fixed branch with horse plate
Support, makes the bottom of the draw-in groove bearing far from ground certain altitude；
S23, using two groups of unit heads being arranged under two curb girders of the stem block are by the stem block jack-up and put down
Move to and the draw-in groove bearing clamping.
5. cantilever beam two-part method of construction as claimed in claim 4, it is characterised in that step S3Comprise the steps：
S31, the stem block with the draw-in groove bearing lifted to the top of the main hull in the dock,
And adjust the central shaft of the stem block and overlapped with the center line of the main hull；
S32, make the predeterminated position that the draw-in groove bearing is aligned on the main hull, then the stem block is placed on
On the main hull, and held using the temporary support of at least one pair of seat being placed between the stem block and the main hull
Weight and positioning；
S33, the position of the stem block is adjusted using oil pump, in making the central shaft of the stem block and the main hull
Heart line is completely superposed.
6. cantilever beam two-part method of construction as claimed in claim 5, it is characterised in that step S4Comprise the following steps：
S41, adjust the draw-in groove bearing to the predeterminated position, then the draw-in groove bearing and the main hull are welded and fixed；
S42, using stem block described in the oil pump jack-up, raise 30mm, plus another temporary support seat is withstood；
S43, the load-bearing board member and the slideway board member be put into and positioned to the component calibration position, checking precision
And weld；
S44, reuse stem block described in the oil pump jack-up, then the stem block is put down.
7. cantilever beam two-part method of construction as claimed in claim 6, it is characterised in that step S5Comprise the following steps：
S51, the afterbody block hung on the main hull, in place afterwards with afterbody block described in 4 250 tons of oil pump jack-up；
S52, adjust using steel wire rope the overall linearity of the stem block and the afterbody block, and emphasis adjustment described the
The overall linearity of one slipping base and second slipping base；
S53, using the integral level degree of stem block described in total station survey and the afterbody block, adjusted according to measurement result,
Until reaching design requirement；
S54, complete the stem block and welded with the whip stitch of the afterbody block.
8. cantilever beam two-part method of construction as claimed in claim 1, it is characterised in that step S3With step S5It is using dragon
What gantry crane was realized.
9. cantilever beam two-part method of construction as claimed in claim 2, it is characterised in that the bearing is ball bearing or rolling
Needle bearing.
10. the cantilever beam two-part method of construction as any one of claim 1~9, it is characterised in that step S5Afterwards
It is additionally provided with following steps：
S6, install pull plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114729.1A CN104943819B (en) | 2014-03-25 | 2014-03-25 | Cantilever beam two-part method of construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410114729.1A CN104943819B (en) | 2014-03-25 | 2014-03-25 | Cantilever beam two-part method of construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104943819A CN104943819A (en) | 2015-09-30 |
| CN104943819B true CN104943819B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410114729.1A Expired - Fee Related CN104943819B (en) | 2014-03-25 | 2014-03-25 | Cantilever beam two-part method of construction |
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| Country | Link |
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| CN (1) | CN104943819B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107653854B (en) * | 2016-07-26 | 2020-04-03 | 龙口中集来福士海洋工程有限公司 | Construction and closing method of cantilever beam of self-elevating platform |
| CN108661030A (en) * | 2017-03-31 | 2018-10-16 | 烟台中集来福士海洋工程有限公司 | Jack-up unit cantilever beam folding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2405182A1 (en) * | 1977-10-04 | 1979-05-04 | Metalliques Entrepr Cie Fse | PROCESS AND EQUIPMENT FOR PLACING ON COLUMNS ANCHORED TO THE BOTTOM, FROM A TRANSPORTER VESSEL, LOADS, PLATFORMS OR SIMILAR, FOR INSTALLATIONS OFF THE COAST |
| CN101148869A (en) * | 2007-10-18 | 2008-03-26 | 大连船舶重工集团有限公司 | Construction method for large-scale overhanging beam |
| CN102477733A (en) * | 2010-11-26 | 2012-05-30 | 大连船舶重工集团有限公司 | Installation method for integrally dragging cantilever beam onto platform |
| CN203268297U (en) * | 2013-04-25 | 2013-11-06 | 大连船舶重工集团有限公司 | Self-elevating platform cantilever beam sliding base |
-
2014
- 2014-03-25 CN CN201410114729.1A patent/CN104943819B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2405182A1 (en) * | 1977-10-04 | 1979-05-04 | Metalliques Entrepr Cie Fse | PROCESS AND EQUIPMENT FOR PLACING ON COLUMNS ANCHORED TO THE BOTTOM, FROM A TRANSPORTER VESSEL, LOADS, PLATFORMS OR SIMILAR, FOR INSTALLATIONS OFF THE COAST |
| CN101148869A (en) * | 2007-10-18 | 2008-03-26 | 大连船舶重工集团有限公司 | Construction method for large-scale overhanging beam |
| CN102477733A (en) * | 2010-11-26 | 2012-05-30 | 大连船舶重工集团有限公司 | Installation method for integrally dragging cantilever beam onto platform |
| CN203268297U (en) * | 2013-04-25 | 2013-11-06 | 大连船舶重工集团有限公司 | Self-elevating platform cantilever beam sliding base |
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| Publication number | Publication date |
|---|---|
| CN104943819A (en) | 2015-09-30 |
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