CN114506417B - Roll-on and roll-off boarding method for thin-wall steel cylinder - Google Patents
Roll-on and roll-off boarding method for thin-wall steel cylinder Download PDFInfo
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- CN114506417B CN114506417B CN202210419489.0A CN202210419489A CN114506417B CN 114506417 B CN114506417 B CN 114506417B CN 202210419489 A CN202210419489 A CN 202210419489A CN 114506417 B CN114506417 B CN 114506417B
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- barge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
- B63B27/143—Ramps
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Ship Loading And Unloading (AREA)
Abstract
The invention discloses a rolling loading method of a thin-wall steel cylinder, which adopts a loading mode that a rolling assembly vehicle carries a foundation and directly runs on a deck of a pile transporting barge through a springboard between the deck of the barge and a wharf, and adjusts the posture of the pile transporting barge by continuously adjusting ballast water of the barge in the rolling process so as to keep the relative height of the deck of the barge and the wharf and ensure that the foundation is stably, smoothly and safely rolled on the ship. The roll-on-roll-off boarding method is safe and reliable, and saves transportation funds.
Description
Technical Field
The invention belongs to the technical field of offshore wind power engineering, and particularly relates to a rolling-on-boarding method of a thin-wall steel cylinder.
Background
The composite cylinder type foundation is a key structure for fixing wind power on the sea. The diameter of the outer cylinder wall of the composite cylinder type foundation is phi 39m, the wall thickness is 25mm, the height of the whole foundation is 50 m-60 m, and the weight is 2500 t. When roll-on-roll-off service is carried out, it is always a difficult construction project to safely transfer such heavy structures to barges and transport the structures to offshore sites for installation. At present, due to the large size and dead weight of the composite barrel type foundation marine shipment ship, a kiloton-level gantry crane is generally adopted for relevant operation. But the kiloton-level hoisting equipment has higher operation cost, the danger coefficient of a heavy object in the hoisting process is extremely high, the operation and commander experience is required to be rich, and when a foundation is placed, a ship deck is stressed instantly, so that personnel accidents are easy to happen, and the traditional ship loading mode has the defects of huge cost loss and difficulty in ensuring the safety condition.
Disclosure of Invention
The invention aims to overcome the limitations and provide a safe and reliable rolling and loading method of the thin-wall steel cylinder, which saves the transportation fund.
The purpose of the invention is realized by the following technical scheme: a roll-on and roll-off boarding method for thin-wall steel cylinders comprises the following steps:
collecting hydrological data of a wharf in a loading period, measuring tidal change within 3 days and 72 hours before loading, checking and correcting the collected hydrological data, and calculating the height and speed of rising tide and falling tide of a rolling loading day;
step two, calculating the water pump flow of the ballast water of the barge according to the rising and falling tide rates, and calculating the boarding speed and the rolling and loading operation time of the rolling and assembling vehicle;
thirdly, planning a route in advance before transportation, cleaning the route in the transportation within the width range of 45 meters, paving a steel plate on an unhardened road surface, drawing a guide line at an upper ship point, and facilitating the running of a rolling assembly vehicle;
step four, the barge is leaned against the roll-on position of the wharf in a mode that the tail part of the barge is opposite to the wharf, then the attitude and the deck height of the barge are adjusted by adjusting the ballast water of the barge, and reliable mooring is carried out between the barge and the wharf by using a mooring rope;
fifthly, cleaning a deck in advance before the thin-wall steel cylinder is loaded onto the ship to ensure that no obstacle exists on the deck plane, laying a loading springboard on the transport ship and the wharf, wherein one end of the springboard is required to fall on the position with the pile, and the other end of the springboard is arranged on the ship;
step six, because the steel plate of the cylinder wall is thinner, in order to increase the contact area of the bottom of the steel cylinder, before the steel cylinder is loaded on a ship, L-shaped steel is welded to the bottom of the cylinder body to be used as the boot leg of the steel cylinder;
seventhly, positioning the center position of the steel cylinder on the ship on the deck by adopting cross positioning;
step eight, arranging the first set of buttresses at the design position of the barge in advance, finishing leveling, and after the arrangement of the buttresses is finished, ensuring that the error of the central point of each buttress is not more than 5cm, the angle error is not more than 2 degrees, and the horizontal error of all the buttresses is not more than 1 cm;
step nine, the module vehicle slowly moves towards the bow of the ship and stops after reaching the designed position;
step ten, after the support pier at the tail part is transported in place, arranging the support pier at the tail part to a design position, slowly placing the steel cylinder on the support pier by using a module vehicle, and then welding and fixing the steel cylinder and the support pier, and the support pier and the deck;
and step eleven, withdrawing two rows of long module vehicles, withdrawing two rows of short module vehicles after arranging the 6 circular buttresses at the positions corresponding to the two rows of module vehicles in place, and then arranging all the circular buttresses to the designed positions to finish the loading of the steel cylinder.
Preferably, in step two, the roll-on-roll-off assembly vehicle adopts a 4-row 88-axis 4-power-head module vehicle.
Preferably, the deck plane of the ship in the whole transportation process of the step five is 3-7 cm higher than the ground, and the deck plane is always controlled in the range in the subsequent loading and adjusting process of the steel cylinder.
Preferably, the state of the diving board is observed at any time during the transportation process, and the barge immediately carries out ballast adjustment, so that the diving board is not only ensured not to be in contact with the wharf ground, but also the levelness of the deck during the transportation process is ensured to be within 2/100.
In summary, the invention has the following advantages: the method adopts a ship loading mode that a roll-on-roll assembly vehicle carries a steel cylinder and directly drives the deck of a pile transporting barge through a springboard between the deck of the barge and a wharf, and the posture of the pile transporting barge is adjusted by continuously adjusting ballast water of the barge in the roll-on-roll process so as to keep the relative height of the deck of the barge and the wharf, so that a foundation is stably, smoothly and safely rolled and loaded on the ship, and the method is safe and reliable and saves transportation funds.
Drawings
FIG. 1 is a cloth layout of the roll-on-roll assembly vehicle of the present invention;
FIG. 2 is a schematic view of the diving board arrangement of the present invention;
FIG. 3 is a plan view and a welding schematic view of L-shaped steel at the bottom of the plate according to the present invention;
FIG. 4 is a schematic illustration of a steel cylinder of the present invention after it has been transported in place;
FIG. 5 is a schematic view of the arrangement of the steel cylinder and the buttress of the present invention;
the reference numbers in the figures: 1-rolling assembly vehicle, 2-thin-wall steel cylinder, 3-springboard, 4-position with pile, 5-L-shaped steel and 6-buttress.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in figure 1, the invention provides a rolling and loading method of a thin-wall steel cylinder, which comprises the following steps: collecting hydrological data of a wharf in a loading period, measuring tidal change within 3 days and 72 hours before loading, checking and correcting the collected hydrological data, and calculating the height and the speed of rising tide and falling tide of a rolling and loading day;
calculating the flow rate of a water pump of the ballast water of the barge according to the rising and falling tide rates, and calculating the boarding speed and the roll-on and roll-off operation time of the roll assembly vehicle 1; in the calculation process, the height difference change of the deck of the ship caused by the tide and tide at each time point in the whole rolling and loading process needs to be equal to the height difference change of the deck caused by the ship ballast caused by the weight of the rolling and assembling vehicle 1 and the thin-wall steel cylinder 2 which are loaded on the ship, and if the weight cannot be completely balanced in the loading process, the height difference change can be adjusted by a water pump of the ballast water; the roll assembly cart 1 employs 4 rows of 88 axis 4 power head modular carts.
Planning a route in advance before transportation, cleaning the route in transportation within a width range of 45 meters, paving a steel plate on an unhardened road surface, drawing a guide line at a ship-loading point, and facilitating the running of the roll assembly vehicle 1;
firstly, the barge leans against the rolling position of the wharf in a way that the tail part of the barge is opposite to the wharf, then the posture and the deck height of the barge are adjusted by adjusting the ballast water of the barge, and then a cable is used for reliably mooring the barge and the wharf;
as shown in fig. 2, before the thin-wall steel cylinder 2 is loaded onto the ship, the deck needs to be cleaned in advance to ensure that no obstacle exists on the plane of the deck, a ship loading springboard 3 is laid on the transport ship and a dock, one end of the ship loading springboard 3 needs to fall on a position 4 with a pile, and the other end of the ship loading springboard is placed on the ship; the plane of the deck of the ship is 3-7 cm higher than the ground in the whole transportation process, and the deck is always controlled in the range in the subsequent loading and load adjusting process of the thin-wall steel cylinder 2;
as shown in fig. 3, since the steel plate thickness of the wall of the thin-wall steel cylinder 2 is small, in order to increase the contact area of the bottom of the thin-wall steel cylinder 2, before the thin-wall steel cylinder 2 is loaded on a ship, the L-shaped steel 5 is welded to the bottom of the cylinder body as the boot leg;
positioning the center position of the thin-wall steel cylinder 2 on the ship on the deck by adopting cross positioning;
arranging a first set of buttresses 6 at the design position of the barge in advance, finishing leveling, and temporarily not arranging the last buttresses 6 of the passage of the roll assembly vehicle 1; after the buttresses 6 are arranged, the error of the central point of each buttress 6 is not more than 5cm, the angle error is not more than 2 degrees, and the horizontal error of all buttresses 6 is not more than 1 cm;
the roll assembly vehicle 1 slowly moves towards the bow of the ship and stops after reaching the designed position; the state of the springboard 3 is observed at any time in the transportation process, and the barge immediately carries out ballast adjustment, so that the springboard 3 is not contacted with the wharf ground, and the levelness of the deck during transportation is ensured to be within 2/100;
as shown in fig. 4, after the transportation is completed, the buttress 6 at the tail part, namely the last buttress 6 of the channel of the module vehicle is arranged to the design position, then the thin-wall steel cylinder 2 is slowly placed on the buttress 6 by the module vehicle, and then the thin-wall steel cylinder 2 and the buttress 6 as well as the buttress 6 and the deck are welded and fixed;
as shown in fig. 5, two rows of long rolling assembly vehicles 1 are withdrawn, six buttresses 6 at positions corresponding to the two rows of rolling assembly vehicles 1 are arranged in place, then two rows of short rolling assembly vehicles 1 are withdrawn, and then all the buttresses 6 are arranged at designed positions, so that the rolling assembly of the thin-wall steel cylinder is completed.
Claims (1)
1. A rolling and loading method of a thin-wall steel cylinder is characterized by comprising the following steps: the method comprises the following steps:
collecting hydrological data of a wharf in a loading period, measuring tidal change within 3 days and 72 hours before loading, checking and correcting the collected hydrological data, and calculating the height and speed of rising tide and falling tide of a rolling loading day;
step two, calculating the water pump flow of the ballast water of the barge according to the rising and falling tide rates, and calculating the boarding speed and the rolling and loading operation time of the rolling and assembling vehicle;
thirdly, planning a route in advance before transportation, cleaning the route in transportation within a width range of 45 meters, paving a steel plate on an unhardened road surface, drawing a guide line at an upper ship point, and facilitating the running of a roll-on-roll assembly vehicle;
step four, the barge is leaned against the roll-on position of the wharf in a mode that the tail part of the barge is opposite to the wharf, then the attitude and the deck height of the barge are adjusted by adjusting the ballast water of the barge, and reliable mooring is carried out between the barge and the wharf by using a mooring rope;
fifthly, cleaning a deck in advance before the thin-wall steel cylinder is loaded onto the ship to ensure that no obstacle exists on the deck plane, laying a loading springboard on the transport ship and the wharf, wherein one end of the springboard is required to fall on the position with the pile, and the other end of the springboard is arranged on the ship;
step six, because the wall steel plate of the thin-wall steel cylinder is thinner, in order to increase the contact area of the bottom of the thin-wall steel cylinder, L-shaped steel is welded to the bottom of the cylinder body before the thin-wall steel cylinder is loaded on a ship and is used as a boot leg of the cylinder body;
seventhly, positioning the center position of the thin-wall steel cylinder on the ship on the deck by adopting cross positioning;
step eight, arranging the first set of buttresses at the design position of the barge in advance, finishing leveling, and after the arrangement of the buttresses is finished, ensuring that the error of the central point of each buttress is not more than 5cm, the angle error is not more than 2 degrees, and the horizontal error of all the buttresses is not more than 1 cm;
step nine, the module vehicle slowly moves towards the bow of the ship and stops after reaching the designed position;
step ten, after the support pier at the tail part is transported in place, arranging the support pier to a design position, then slowly placing the thin-wall steel cylinder on the support pier by using a rolling assembly vehicle, and then welding and fixing the thin-wall steel cylinder and the support pier, and the support pier and the deck;
step eleven, withdrawing two rows of long rolling assembly vehicles, withdrawing two rows of short rolling assembly vehicles after arranging 6 buttresses at positions corresponding to the two rows of rolling assembly vehicles in place, and then arranging all the buttresses to design positions, wherein the rolling assembly of the thin-wall steel cylinder on the ship is finished;
in the second step, the roll-on-roll-off assembly vehicle adopts a 4-row 88-axis 4-power-head module vehicle;
the plane of the deck of the ship in the whole transportation process of the fifth step is 3-7 CM higher than the ground, and the deck is controlled within the range all the time in the subsequent loading and load adjusting process of the thin-wall steel cylinder;
in the ninth step, the state of the springboard is observed at any time during the transportation process, and the barge immediately carries out ballast adjustment, so that the springboard is ensured not to be in contact with the wharf ground, and the levelness of the deck during the transportation process is ensured to be within 2/100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210419489.0A CN114506417B (en) | 2022-04-21 | 2022-04-21 | Roll-on and roll-off boarding method for thin-wall steel cylinder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210419489.0A CN114506417B (en) | 2022-04-21 | 2022-04-21 | Roll-on and roll-off boarding method for thin-wall steel cylinder |
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| Publication Number | Publication Date |
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| CN114506417A CN114506417A (en) | 2022-05-17 |
| CN114506417B true CN114506417B (en) | 2022-07-12 |
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| CN115973806B (en) * | 2023-01-09 | 2023-07-21 | 交通运输部广州打捞局 | Roll-on-roll-off ship method, device, system and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103991511B (en) * | 2014-05-22 | 2015-08-12 | 中国石油大学(华东) | Platform conveying arrangement |
| KR101792152B1 (en) * | 2016-06-28 | 2017-11-20 | 삼성중공업 주식회사 | Marine structure installation vessel |
| CN107685835A (en) * | 2017-03-21 | 2018-02-13 | 南通蓝岛海洋工程有限公司 | A kind of wind-powered electricity generation steel-pipe pile hoisting transportation technique |
| CN109911125A (en) * | 2019-03-15 | 2019-06-21 | 中交第三航务工程局有限公司 | A kind of rolling of offshore wind power foundation steel-pipe pile takes on board method |
| CN213036993U (en) * | 2020-08-12 | 2021-04-23 | 华电曹妃甸重工装备有限公司 | Offshore wind power pile foundation roll-on-roll-off shipment system |
| CN214084676U (en) * | 2021-01-08 | 2021-08-31 | 南通泰胜蓝岛海洋工程有限公司 | Cost-saving tower transport ship |
| CN113320645B (en) * | 2021-05-31 | 2022-07-12 | 广船国际有限公司 | Sea nation device for overwater wind power single-pile foundation lightering delivery and installation method thereof |
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