CN114856919A - Method for hoisting jacket by full-circle slewing crane ship - Google Patents
Method for hoisting jacket by full-circle slewing crane ship Download PDFInfo
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- CN114856919A CN114856919A CN202210065695.6A CN202210065695A CN114856919A CN 114856919 A CN114856919 A CN 114856919A CN 202210065695 A CN202210065695 A CN 202210065695A CN 114856919 A CN114856919 A CN 114856919A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/40—Arrangements or methods specially adapted for transporting wind motor components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
The invention relates to the technical field of offshore wind power construction, and discloses a method for hoisting a jacket by a full-circle slewing crane ship, which comprises the following steps: s1, positioning the ship: accurately positioning the position and the anchoring point of the full-circle slewing crane ship, and positioning the full-circle slewing crane ship at the anchoring point; calculating the anchor throwing point of the transport ship and carrying the transport ship to the anchor throwing point; s2, hanging a sling: hanging the lifting hook on a jacket, and removing the transportation tool on the jacket; s3, hoisting the jacket: hoisting the jacket to a certain height through a rotary arm support and rotating the jacket to the position above the engineering pile, and withdrawing a transport ship for transporting the jacket from a construction site; s4, aligning and installing the jacket: the jacket is lifted to the upper side of an engineering pile through a rotary arm support on the full-circle slewing crane ship, then the jacket is placed down to be aligned with the engineering pile provided with jacket supporting legs, and after the jacket is accurately aligned, the jacket is continuously placed down to the hanging strip to be in an unstressed state.
Description
Technical Field
The invention relates to the technical field of offshore wind power construction, in particular to a method for hoisting a jacket by a full-circle slewing crane ship.
Background
Wind resources on the ocean are rich, partial electric energy can be provided for the city by generating power after full use, and the power supply pressure of the city is relieved. The offshore wind power engineering is complex to build and high in difficulty, the jacket foundation is one of the most common structures of offshore wind turbine foundations, the structure is simple, the technology is mature, the jacket foundation has the characteristics of high overall rigidity and small effect of environmental loads such as waves and water flows, and the jacket foundation is widely applied to offshore wind power development and construction and even can be applied to large-scale wind turbines and deep sea areas.
For a sea area with shallow depth, the jacket foundation is generally transported to a construction site by a transport ship in a vertical transportation mode, and then is hoisted by a crane ship. Because the jacket has larger size and mass, the existing technology and ship equipment have larger technical difficulty and lower construction efficiency when being hoisted on the sea.
For the deep sea area, because the jacket adopted by the deep sea area is higher, in order to improve the transportation safety degree, the jacket foundation is mostly transported horizontally by a transport ship to a construction site and then hoisted by a crane ship. The jacket is hoisted by adopting the fixed boom crane ship, the position of the jacket needs to be adjusted by anchor bolts in the hoisting process, and the jacket is not beneficial to installation because the positioning precision and the construction efficiency in deep sea are low.
The hoisting position is changed by using the full-slewing device of the full-slewing crane ship to replace the ship position movement of the fixed boom crane ship, so that the positioning precision and the working efficiency can be greatly improved. Therefore, a construction method for hoisting the jacket by using a full-circle-rotation crane ship is urgently needed, so that the construction difficulty is reduced, the construction efficiency is improved, and the construction of offshore wind power engineering is accelerated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing construction method and ship equipment are poor in positioning accuracy and low in construction efficiency, and are not beneficial to installation of the jacket.
In order to solve the above technical problems, an object of the present invention is to provide a method for hoisting a jacket by a full-circle slewing crane ship, comprising the following steps:
s1, positioning the ship: accurately positioning the position of the full-slewing crane ship by matching with a GPS positioning system on the full-slewing crane ship according to the speed and direction of the stormy waves and the position of the transport ship and the specific coordinates of an installing position, determining the anchor point of the full-slewing crane ship, and positioning the full-slewing crane ship at the anchor point; a lifting hook is arranged on the full-circle-turning crane ship, an anchoring point of the transport ship is calculated according to the wind field machine position and the full-circle-turning crane ship coordinate, the transport ship is carried to the anchoring point, and the transport ship is positioned;
s2, hanging a sling: hanging the lifting hook on a jacket, removing the transportation tool on the jacket, and lifting the jacket by the lifting hook on the full-circle-slewing crane ship;
s3, hoisting the jacket: after the jacket is lifted to a certain height through a rotary arm support on a full-circle slewing crane, the rotary arm support rotates to the position above the engineering pile, and a transport ship for transporting the jacket exits from a construction site;
s4, aligning and installing the jacket: the jacket is lifted to the upper side of an engineering pile through a rotary arm support on a full-circle slewing crane ship, then the jacket is transferred to the engineering pile with the jacket supporting legs for alignment, after the jacket is accurately aligned, the jacket is continuously transferred to the hanging strip to be in an unstressed state, namely the jacket is transferred to the engineering pile, and the jacket is supported by the engineering pile.
Preferably, in step S1, the fully slewing crane ship and the transport ship are both fixed by a chain or a rope of an anchor machine on an anchor boat, and the number of the anchor boats is plural.
Preferably, in the step S1, the mooring line or the mooring chain positions the full slewing crane vessel and the carrier vessel in at least three directions, respectively, so as to more stably fix the carrier vessel and the full slewing crane vessel.
Preferably, in step S2, the rotating arm support for lifting equipment on the fully slewing crane is rotated to a position right above the deck of the transport vessel, then the hook below the rotating arm support is adjusted to be located right above the jacket, a proper sling is selected, the sling is fixedly mounted on the jacket, the sling is hung on the main hook by using the sling hook, and meanwhile, the transport tools such as the jacket limit support structural member and the like on the jacket are cut off.
Preferably, in step S2, the jacket is divided into two modes, namely a vertical transport jacket and a horizontal transport jacket, the vertical transport mode is that the jacket is vertically installed on the transport ship for transport, and the horizontal transport mode is that the jacket is laid down on the transport ship in the length direction for transport;
when a sling of a vertical jacket is hung, firstly, a rotary arm support for hoisting equipment on a full-circle slewing crane ship is rotated to the position right above a deck of a transport ship, a hanging strip and a lifting hook which is connected with the hanging strip and is arranged at the lower end of the hanging strip are arranged on the rotary arm support, then the lifting hook below the rotary arm support is adjusted to be positioned right above a flange at the top of the jacket, a proper sling is selected, the sling is fixedly arranged on an inner ring plate of the flange at the top of the jacket, the hanging strip is hung on a main lifting hook by using a sling hook, and meanwhile, transport tools such as a jacket limiting support structural part and the like on the jacket are cut;
when a sling of a horizontal jacket is hung, two turning-over hanging beams are arranged on a hook of a rotary arm support, a shackle is hung on the turning-over hanging beams, two hanging belts are hung at the left end and the right end of the turning-over hanging beam connected with the hook arranged behind, and one hanging belt is hung at the left end and the right end of the turning-over hanging beam connected with the hook arranged in front; moving the rotary arm support to be right above the jacket lifting lug to prepare for hanging the lifting lug; firstly, hanging two hanging points on the upper side of the upper part of the jacket, tying a cable wind rope on the hanging strip, and hanging the hanging strip on the lifting lug by cross-pulling the cable wind rope when the hanging strip is close to the lifting lug; then hanging a hanging point on the lower side of the upper part of the jacket, lowering a hanging beam of the rear hook during hanging, and tightening a cable rope in the lowering process to prevent the hanging belt on the upper side from falling off the lifting lug; after the hanging of the upper lifting point is completed, the two lifting lugs close to the grouting section are hung, the cable wind rope is tied on the lifting belt in advance, the cable wind rope is pulled according to the cross direction when the lifting belt is close to the lifting lugs, the lifting belt is hung on the lifting lugs, and the lifting front hook is lifted at last to enable the lifting belt to be stressed, so that the lifting lug is prevented from being separated from the lifting lug.
Preferably, in step S3, when the jacket is transported vertically, the center of gravity of the jacket needs to be adjusted between the hooks for lifting the jacket by rotating the boom and the hooks, that is, the center of gravity of the jacket needs to be adjusted by adjusting the lifting length of the lifting rope, so as to adjust the position of the jacket;
when the jacket is transported horizontally, the front hook and the rear hook of a rotating arm frame lifting hoisting jacket on a full-circle slewing crane ship are lifted until the hanging belt is in a stressed state, and then transportation tools such as jacket limiting support structural parts and the like are cut off; after the transportation tool is cut off, continuing to lift the jacket, and after the jacket is lifted to a certain height position, moving a rotary arm support of the full-circle-turning crane ship to the position above the engineering pile, and withdrawing the transport ship from the construction site; then the jacket that will be in the state of falling to bed stands up, be about to the jacket by the state of falling to bed turn over for the upright state, earlier slowly rise the lifting hook that sets up behind, slowly transfer the lifting hook that sets up in the front simultaneously, erect the pipe rack on the surface of water and rotate, when reaching vertical state, four lugs on the jacket upper portion that the lifting hook that sets up behind connected are atress completely, two lugs in the lower part that the couple that sets up in the front is connected continue to transfer to the state of not atress, the pipe rack reaches vertical state promptly, behind the suspender of grout department does not atress, operating personnel takes the transport ship to lower lug department, pull the cable wind rope of suspender department, make the suspender break away from the lug, accomplish the standing up of pipe rack.
Preferably, in step S4, a positioning system is used to monitor the relative position relationship between the jacket support legs and the engineering piles in real time, then the full-circle-slewing crane ship is moved to perform coarse positioning, when the difference between the planar positions of the jacket support legs and the corresponding engineering piles is 30-50cm, the torsion angle of the full-circle-slewing crane ship is adjusted, and then the jacket is initially lowered, so that the lowering of the jacket support legs is stopped when the distance between the jacket support legs and the top surfaces of the steel pipe piles is 1 m; and then, diving the underwater personnel, diving to the position of the engineering pile to assist the accurate positioning of the jacket, communicating the jacket with personnel operating to transfer the jacket by the underwater personnel, wherein the communication content comprises position information and transfer depth, aligning the jacket supporting legs with the engineering pile, and completing the hoisting of the jacket after determining that the jacket supporting legs are all inserted into the steel pipe pile and no structural member is abnormal.
Preferably, in step S4, the torsion angle is adjusted when the planar positions of the jacket leg and the engineering pile are different by 50cm, so that the practical situation can be changed easily during the process of lowering and aligning the jacket.
Compared with the prior art, the invention has the following advantages:
1. compared with a fixed boom crane ship, the method for hoisting the jacket by the full-circle swing crane ship has the advantages that when the jacket is hoisted by the full-circle swing crane ship, the jacket transport ship does not need to be in place above the engineering pile, the transport ship is prevented from colliding with the engineering pile when the jacket is hoisted in shallow sea, and the safety during construction operation is ensured;
2. according to the method for hoisting the jacket by using the full-circle slewing crane ship, the full-circle slewing device of the full-circle slewing crane ship is utilized, namely, the rotating arm support is utilized to carry out hoisting position transformation on the jacket to replace the ship position movement of the fixed arm support crane ship, so that the positioning precision and the working efficiency can be greatly improved, and the progress of construction operation is accelerated; meanwhile, the relative position of the jacket transport ship and the full-rotation crane ship can select a proper position according to the wind speed and the surge direction, so that the requirement of construction operation on marine environment is reduced, the marine construction operation time is prolonged, more construction operations can be performed in the marine fixed window period, and the construction cost is reduced to a certain extent.
Drawings
FIG. 1 is a process flow diagram of example 1 of the present invention.
Fig. 2 is a schematic view of positioning of a fully slewing crane ship and a transport ship according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of the suspension cable hanger of the horizontal jacket according to embodiment 1 of the present invention.
Fig. 4 is a schematic view of jacket hoisting according to embodiment 1 of the present invention.
Fig. 5 is a schematic representation of the turn-over of the jacket of embodiment 1 of the present invention.
Fig. 6 is a schematic view of the jacket of example 1 of the present invention turning over.
Fig. 7 is a schematic view of jacket installation alignment according to embodiment 1 of the present invention.
Fig. 8 is a schematic diagram of anchoring and positioning of the full-circle-slewing crane vessel according to embodiment 2 of the present invention.
Fig. 9 is a schematic view of docking of a jacket carrier according to embodiment 2 of the present invention.
Fig. 10 is a schematic diagram of a sling mounting of a vertical transport jacket according to embodiment 2 of the present invention.
Fig. 11 is a schematic view of the hoisting of the vertical jacket according to embodiment 2 of the present invention.
The reference numbers illustrate: in the figure, 1, a full-circle slewing crane ship; 101. rotating the arm support; 102. a sling; 103. a hook; 2. a carrier vessel; 3. a jacket; 30. a jacket leg; 301. a hoist rigging; 4. engineering piles; 5. an anchor chain; 6. (ii) a 7. A guy rope; 10. seawater.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and the detailed description, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
Example 1: the embodiment provides a method for hoisting a horizontal jacket by a full-circle slewing crane ship, wherein the jacket is arranged in a lying manner along the length direction of a transport ship and hoisted according to the steps shown in the attached drawing 1:
s1, positioning the ship: according to the speed and the direction of the stormy waves and the specific coordinates of the position of the transport ship and the installation position, wherein the installation position refers to the position of the jacket hoisted by the full-circle-slewing crane ship, the position of the full-circle-slewing crane ship is accurately positioned by matching with a GPS positioning system on the full-circle-slewing crane ship, the throwing anchor point of the full-circle-slewing crane ship is determined, and the full-circle-slewing crane ship is positioned at the throwing anchor point. As shown in fig. 2, the present embodiment positions the full-swing crane ship by the anchor chains on the anchor boats arranged in 6 directions; the lifting hooks are arranged on the rotary arm supports of the full-circle-turning crane ship, then the anchoring point of the transport ship is calculated according to the wind field position and the coordinates of the full-circle-turning crane ship, the transport ship is carried to the anchoring point, and is fixed through anchor boats and anchor chains on the anchor boats arranged in multiple directions to complete positioning of the transport ship. Of course, the fully slewing crane ship and the transport ship can be arranged in parallel, and only the rotary arm support on the fully slewing crane ship needs to be rotated to the position above the transport ship. A plurality of anchor chains are arranged for more stably fixing the transport ship and the full-circle slewing crane ship.
S2, hanging a sling: as shown in fig. 3, a rotating arm support for hoisting equipment on a full-circle slewing crane is rotated to a position right above a deck of a transport ship, a lifting hook below the rotating arm support is adjusted to be located right above a jacket, a proper sling is selected, the lifting hook is hung on the jacket, the sling is fixedly installed on the jacket, a sling hook is used for hanging a main hook, and meanwhile, transportation tools such as limiting support structural members of the jacket on the jacket are cut off, so that the jacket is hoisted through the lifting hook on the full-circle slewing crane.
When a jacket is hung and provided with a sling in a horizontal type, two turning-over hanging beams are required to be arranged on a lifting hook of a rotary arm support, a shackle is hung on each turning-over hanging beam, two hanging belts are hung at the left end and the right end of each turning-over hanging beam connected with a rear-arranged hook, namely hanging belts on the left side of the jacket in the attached drawing 3, and two hanging belts are hung at the left end and the right end of each turning-over hanging beam connected with a front-arranged hook, namely hanging belts hung on the right side of the jacket in the attached drawing 3; moving the rotary arm support to be right above the jacket lifting lug to prepare for hanging the lifting lug; firstly, hanging two hanging points on the upper side of the upper part of the jacket, tying a cable wind rope on the hanging strip, and hanging the hanging strip on the lifting lug by cross-pulling the cable wind rope when the hanging strip is close to the lifting lug; then hanging a hanging point on the lower side of the upper part of the jacket, lowering a hanging beam of the rear lifting hook during hanging, and tightening a cable rope in the lowering process to prevent the hanging belt on the upper side from falling off the lifting lug; after the hanging of the upper lifting point is completed, the two lifting lugs close to the grouting section are hung, the cable wind rope is tied on the lifting belt in advance, the cable wind rope is pulled according to the cross direction when the lifting belt is close to the lifting lugs, the lifting lug is hung on the lifting lug, and the lifting hook makes the lifting belt stressed before lifting at last, so that the lifting lug is prevented from being separated from the lifting lug.
S3, hoisting the jacket: as shown in fig. 4, when the horizontal jacket is lifted, the front and rear hooks of the rotating arm support on the full-circle slewing crane lift to lift the jacket are stopped when the hanging strip is in a stressed state, and the transportation tools such as the jacket limiting support structural member and the like are cut off; after the transportation tool is cut off, continuing to lift the jacket, and after the jacket is lifted to a certain height position, moving a rotary arm support of the full-circle-turning crane ship to the position above the engineering pile, and withdrawing the transport ship from the construction site; then turning over the jacket in the lying down state, namely turning over the jacket from the lying down state to an upright state, slowly lifting a hook arranged behind, slowly lowering the hook arranged in front, vertically rotating the jacket on the water surface, fully stressing four lifting lugs at the upper part of the jacket connected with the hook arranged behind when the jacket reaches the upright state, continuously lowering two lifting lugs at the lower part connected with the hook arranged in front to an unstressed state, namely enabling the jacket to reach the upright state, as shown in figure 5, after the hanging strip at the grouting section is not stressed, taking an operator to a lower lifting lug by a traffic ship, drawing a cable rope at the hanging strip to separate the hanging strip from the lifting lug, and finishing the turning over of the jacket;
s4, aligning and installing the jacket: the jacket is lifted to the upper part of the engineering pile through a rotary arm support on the full-circle slewing crane ship, then the jacket is initially lowered, the lowering is stopped when the distance between the jacket supporting legs and the top surface of the steel pipe pile is 1m, then a positioning system is utilized to monitor the relative position relation between the jacket supporting legs and the engineering pile in real time, then the full-circle slewing crane ship is moved to carry out coarse positioning, then the diver is launched into the engineering pile to dive to assist the accurate positioning of the jacket, when the diver communicates with the person who operates the lower jacket to lower the jacket, the twist angle of the ship in the full-circle rotation is adjusted when the difference of the plane positions is 30-50cm, then the jacket is lowered to align with the engineering pile provided with the jacket supporting legs, after the alignment is accurate, the jacket is continuously lowered until the hanging strip is in an unstressed state, namely, the jacket is lowered into the engineering pile, the jacket is supported by the engineering pile, and the engineering pile is made of steel pipe piles. After the jacket legs are inserted into the engineering piles and no structural member abnormality exists, the jacket is hoisted as shown in figure 6.
Example 2: the embodiment provides a method for hoisting a jacket by a full-circle slewing crane ship, which comprises the following steps:
s1, positioning the ship: according to the speed and the direction of the stormy waves and the specific coordinates of the position of the transport ship and the installation position, wherein the installation position refers to the position of the jacket hoisted by the full-circle-slewing crane ship, the position of the full-circle-slewing crane ship is accurately positioned by matching with a GPS positioning system on the full-circle-slewing crane ship, the throwing anchor point of the full-circle-slewing crane ship is determined, and the full-circle-slewing crane ship is positioned at the throwing anchor point. As shown in fig. 7 in particular, the embodiment positions the full slewing crane vessel by means of mooring lines on five azimuths of the mooring line. The full-circle-turning crane ship is provided with a lifting hook, an anchoring point of the transport ship is calculated according to the wind field position and the coordinates of the full-circle-turning crane ship, the transport ship is carried to the anchoring point, and the transport ship is fixed through anchor boats arranged in four directions and anchor ropes on the anchor boats to complete positioning of the transport ship. As shown in fig. 8, in this embodiment the fully slewing crane vessel is juxtaposed with the transport vessel so that the fully slewing crane vessel can hoist the jacket from the transport vessel.
S2, hanging a sling: as shown in fig. 9, a rotary arm support for a hoisting device on a full-circle slewing crane is rotated to a position right above a deck of a transport ship, then a lifting hook below the rotary arm support is adjusted to be located right above a top flange of a jacket, a proper hoisting rigging is selected, the hoisting rigging is fixedly installed on an inner ring plate of the top flange of the jacket, a hoisting belt is hung on a main lifting hook by using a rigging hook, and meanwhile, a transport tool on the jacket is removed, so that the jacket is hoisted by the lifting hook on the full-circle slewing crane;
s3, hoisting the jacket: after the jacket is lifted to a certain height through a rotary arm support on a full-circle slewing crane, the rotary arm support rotates to the position above an engineering pile, the gravity center of the jacket is adjusted to be between lifting hooks for lifting the jacket through the rotary arm support and the lifting hooks, so that the position of the jacket is adjusted, the jacket is erected, and a transport ship for transporting the jacket exits from a construction site as shown in the attached drawing 10;
s4, aligning and installing the jacket: hoisting the jacket to the upper part of the engineering pile through a rotary arm support on the full-circle-swinging crane ship, monitoring the relative position relation of jacket support legs and the engineering pile in real time by using a positioning system, then carrying out coarse positioning by moving the full-circle-swinging crane ship, adjusting the torsion angle of the full-circle-swinging crane ship when the plane position difference is 30-50cm, and then primarily lowering the jacket to ensure that the lowering of the jacket support legs is stopped when the distance between the jacket support legs and the top surface of the steel pipe pile is 1 m; and then diving personnel launch, submerging to the position of the engineering pile to assist accurate positioning of the jacket, communicating with personnel who operate to lower the jacket and lowering the jacket by the diving personnel, then lowering the jacket and aligning with the engineering pile provided with jacket supporting legs, after accurate alignment, continuously lowering the jacket until the hanging strips are in an unstressed state, namely lowering the jacket into the engineering pile, supporting the jacket by the engineering pile, as shown in the attached drawing 11, and further finishing hoisting of the jacket when no structural abnormality exists.
To sum up, compared with the fixed boom crane ship, the method for hoisting the jacket by the full-circle swinging crane ship provided by the embodiment of the invention has the advantages that when the jacket is hoisted by the full-circle swinging crane ship, the jacket transport ship does not need to be in place above the engineering pile, the transport ship is prevented from colliding with the engineering pile when the jacket is hoisted in shallow sea, and the safety during construction operation is ensured; the full-slewing device of the full-slewing crane ship is utilized, namely the rotating arm support is utilized to carry out hoisting position transformation on the jacket to replace ship position movement of the fixed arm support crane ship, so that the positioning precision and the working efficiency can be greatly improved, and the progress of construction operation is accelerated; meanwhile, the relative position of the jacket transport ship and the full-rotation crane ship can select a proper position according to the wind speed and the surge direction, so that the requirement of construction operation on marine environment is reduced, the marine construction operation time is prolonged, more construction operations can be performed in the marine fixed window period, and the construction cost is reduced to a certain extent.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. A method for hoisting a jacket by a full-circle slewing crane ship is characterized by comprising the following steps:
s1, positioning the ship: according to the speed and the direction of the wind waves and the specific coordinates of the position of the transport ship and the installation position, the position of the full-rotation crane ship is accurately positioned by matching with a positioning system on the full-rotation crane ship, the throwing anchor point of the full-rotation crane ship is determined, and the full-rotation crane ship is positioned at the throwing anchor point; a lifting hook is arranged on the full-circle-turning crane ship, an anchoring point of the transport ship is calculated according to the wind field machine position and the full-circle-turning crane ship coordinate, the transport ship is carried to the anchoring point, and the transport ship is positioned;
s2, hanging a sling: hanging the lifting hook on a jacket, removing the transportation tool on the jacket, and lifting the jacket by the lifting hook on the full-circle-slewing crane ship;
s3, hoisting the jacket: after the jacket is lifted to a certain height through an arm support on a full-circle slewing crane, rotating the arm support to the position above the engineering pile, and withdrawing a transport ship for transporting the jacket from a construction site;
s4, aligning and installing the jacket: the jacket is lifted to the upper side of an engineering pile through a rotary arm support on a full-circle slewing crane ship, then the jacket is transferred to the engineering pile with the jacket supporting legs for alignment, after the jacket is accurately aligned, the jacket is continuously transferred to the hanging strip to be in an unstressed state, namely the jacket is transferred to the engineering pile, and the jacket is supported by the engineering pile.
2. The method for hoisting the jacket by the full-circle hoisting vessel according to claim 1, wherein: in step S1, the fully slewing crane ship and the transport ship are both fixed by anchor chains or anchor lines of an anchor machine on an anchor boat, and the number of the anchor boats is plural.
3. The method for hoisting a jacket by a full-circle hoisting vessel according to claim 2, wherein: in step S1, the mooring line or the mooring chain positions the full-circle-turning crane vessel and the carrier vessel in at least three directions, respectively.
4. The method for hoisting a jacket by a full slewing crane vessel according to any one of claims 1 to 3, wherein: in step S2, the rotating arm support for the hoisting device on the full-circle slewing crane is rotated to a position right above the deck of the transport vessel, then the hook below the rotating arm support is adjusted to be located right above the jacket, a proper sling is selected, the sling is fixedly mounted on the jacket, the sling is hung on the main hook by using the sling hook, and the transport tools such as the jacket limiting support structural member and the like are cut off from the jacket.
5. The method for hoisting a jacket by a full-circle hoisting vessel according to claim 4, wherein: in the step S2, the jacket is divided into a vertical transportation jacket and a horizontal transportation jacket;
when a sling of a vertical jacket is hung, firstly, a rotary arm support for hoisting equipment on a full-circle slewing crane ship is rotated to the position right above a deck of a transport ship, a hanging strip and a lifting hook which is connected with the hanging strip and is arranged at the lower end of the hanging strip are arranged on the rotary arm support, then the lifting hook below the rotary arm support is adjusted to be positioned right above a flange at the top of the jacket, a proper sling is selected, the sling is fixedly arranged on an inner ring plate of the flange at the top of the jacket, the hanging strip is hung on a main lifting hook by using a sling hook, and meanwhile, transport tools such as a jacket limiting support structural part and the like on the jacket are cut;
when a sling of a horizontal jacket is hung, two turning-over hanging beams are arranged on a hook of a rotary arm support, a shackle is hung on the turning-over hanging beams, two hanging belts are hung at the left end and the right end of the turning-over hanging beam connected with the hook arranged behind, and one hanging belt is hung at the left end and the right end of the turning-over hanging beam connected with the hook arranged in front; moving the rotary arm support to be right above the jacket lifting lug to prepare for hanging the lifting lug; firstly, hanging two hanging points on the upper side of the upper part of the jacket, tying a cable wind rope on the hanging strip, and hanging the hanging strip on the lifting lug by cross-pulling the cable wind rope when the hanging strip is close to the lifting lug; then hanging a hanging point on the lower side of the upper part of the jacket, lowering a hanging beam of the rear hook during hanging, and tightening a cable rope in the lowering process to prevent the hanging belt on the upper side from falling off the lifting lug; after the hanging of the upper lifting point is completed, the two lifting lugs close to the grouting section are hung, the cable wind rope is tied on the lifting belt in advance, the cable wind rope is pulled according to the cross direction when the lifting belt is close to the lifting lugs, the lifting belt is hung on the lifting lugs, and the lifting front hook is lifted at last to enable the lifting belt to be stressed, so that the lifting lug is prevented from being separated from the lifting lug.
6. The method for hoisting a jacket by a full slewing crane according to claim 5, wherein in the step S3:
when the vertical jacket is lifted, the gravity center of the jacket is required to be adjusted between lifting hooks for lifting the jacket through the rotating arm frame and the lifting hooks, namely the gravity center of the jacket is adjusted by adjusting the lifting length of the lifting rope, so that the position of the jacket can be adjusted conveniently;
when the horizontal jacket is hoisted, the front hook and the rear hook of the rotating arm support hoisting jacket on the full-circle slewing hoisting vessel are hoisted until the hanging belt is in a stressed state, and then transportation tools such as jacket limiting support structural parts and the like are cut off; after the transportation tool is cut off, continuing to lift the jacket, and after the jacket is lifted to a certain height position, moving a rotary arm support of the full-circle-turning crane ship to the position above the engineering pile, and withdrawing the transport ship from the construction site; then the jacket that will be in the state of falling to bed stands up, be about to the jacket by the state of falling to bed turn over for the upright state, earlier slowly rise the lifting hook that sets up behind, slowly transfer the lifting hook that sets up in the front simultaneously, erect the pipe rack on the surface of water and rotate, when reaching vertical state, four lugs on the jacket upper portion that the lifting hook that sets up behind connected are atress completely, two lugs in the lower part that the couple that sets up in the front is connected continue to transfer to the state of not atress, the pipe rack reaches vertical state promptly, behind the suspender of grout department does not atress, operating personnel takes the transport ship to lower lug department, pull the cable wind rope of suspender department, make the suspender break away from the lug, accomplish the standing up of pipe rack.
7. The method for hoisting a jacket by a full-circle hoisting vessel according to claim 6, wherein: in the step S4, a positioning system is used for monitoring the relative position relation between the jacket support legs and the engineering piles in real time, then the full-rotation crane ship is moved for coarse positioning, when the plane positions of the jacket support legs and the corresponding engineering piles are different by 30-50cm, the torsion angle of the full-rotation crane ship is adjusted, then the jacket is initially lowered, and the lowering is stopped when the jacket support legs are 1m away from the top surfaces of the steel pipe piles; and then, diving the underwater personnel, diving to the position of the engineering pile to assist the accurate positioning of the jacket, communicating the jacket with personnel operating to transfer the jacket by the underwater personnel, wherein the communication content comprises position information and transfer depth, aligning the jacket supporting legs with the engineering pile, and completing the hoisting of the jacket after determining that the jacket supporting legs are all inserted into the steel pipe pile and no structural member is abnormal.
8. The method for hoisting the jacket by the full-circle hoisting vessel according to claim 7, wherein: in step S4, it is preferable to adjust the torsion angle when the planar positions of the jacket leg and the engineering pile are different by 50 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065695.6A CN114856919A (en) | 2022-01-20 | 2022-01-20 | Method for hoisting jacket by full-circle slewing crane ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065695.6A CN114856919A (en) | 2022-01-20 | 2022-01-20 | Method for hoisting jacket by full-circle slewing crane ship |
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