CN115162330B - Detachable mat device of self-elevating platform/working ship and use method - Google Patents

Detachable mat device of self-elevating platform/working ship and use method Download PDF

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Publication number
CN115162330B
CN115162330B CN202210703951.XA CN202210703951A CN115162330B CN 115162330 B CN115162330 B CN 115162330B CN 202210703951 A CN202210703951 A CN 202210703951A CN 115162330 B CN115162330 B CN 115162330B
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Prior art keywords
self
elevating platform
pile
dock
mat
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CN115162330A (en
Inventor
沈文君
高峰
金瑞佳
胡克
谭忠华
杨会利
张维
马隽
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Tianjin Research Institute for Water Transport Engineering MOT
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Tianjin Research Institute for Water Transport Engineering MOT
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72—Pile shoes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/0004—Nodal points
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B2017/0056—Platforms with supporting legs
    • E02B2017/0073—Details of sea bottom engaging footing
    • E02B2017/0082—Spudcans, skirts or extended feet
    • 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
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Revetment (AREA)

Abstract

The invention discloses a detachable mat device of a self-elevating platform/working ship and a use method thereof, wherein the detachable mat device comprises the following components: the upper surface of the sinking pad body is provided with grooves, each groove is internally provided with a rubber buffer block, and after the pile shoe of the self-elevating platform/workboat is installed to the corresponding groove, the sinking pad body is fixedly connected with the self-elevating platform/workboat through a connecting piece; arranging the mat body in the dock in advance, and pumping ballast water to ensure that the mat body cannot float in the butt joint process; towing the self-elevating platform/work boat into the dock, and positioning the pile shoe into the groove of the mat body; successfully connecting a water pressing and carrying pipeline in the mat body with a pile punching pipeline of a pile shoe, reducing the height of the water surface in the dock, and exposing the upper surface of the mat body; and a rubber pad is paved on the upper surface of the pile shoe, the connecting piece is welded on the upper surface of the mat body, and the connected self-elevating platform/working ship and the mat body are towed away from the dock. The invention solves the problem of limitation of the use of the pile shoe and increases the working application range of the self-elevating platform/working ship.

Description

Detachable mat device of self-elevating platform/working ship and use method
Technical Field
The invention belongs to the field of platform operation devices, and particularly relates to a detachable mat device of a self-elevating platform/working ship and a use method thereof.
Background
Due to the variability of the geological conditions of the sea floor, when a jack-up platform/work vessel is operated in certain special situations, its original shoe may no longer be suitable for the well site due to the presence of: 1. the bearing capacity of the foundation at the bottom of the pile shoe is weak, and the length of the pile leg cannot meet the requirement of larger mud entering. 2. Penetration of the foundation at the bottom of the pile shoe is possible. Thus, the existing shoe needs to be enlarged to meet the operational requirements of the location.
The traditional mode is to reform the pile shoe and expand the size of the steel structure. The traditional pile shoe enlarging mode has the following defects:
1) If pile shoe is enlarged, pile pulling force is lifted, and difficulty is caused to platform dislocation;
2) If the pile leg is directly transformed into a mat form, the stress mode of the pile leg is changed, and the pile leg near the pile shoe possibly needs to be replaced at the same time;
3) The pile shoe is enlarged or transformed into a sinking pad form, so that the construction period is long, and the service efficiency of the platform is affected;
disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a detachable mat device of a self-elevating platform/working ship and a use method thereof, which are convenient to recover after transformation, solve the problem of limitation of pile shoe use and enlarge the working application range of the self-elevating platform/working ship.
The aim of the invention can be achieved by the following technical scheme.
The invention discloses a detachable mat device of a self-elevating platform/working ship, which comprises a mat body, wherein the upper surface of the mat body is internally provided with grooves for installing pile shoes, each groove is internally provided with a rubber buffer block, and after the pile shoes of the self-elevating platform/working ship are installed to the corresponding grooves, the mat body is fixedly connected with the self-elevating platform/working ship through a connecting piece.
The mat body is composed of a plurality of cabins, and is determined to be rectangular or approximately triangular according to the number of pile legs in the jack-up platform/working ship.
The position, the size, the shape and the number of the grooves are matched with those of the pile shoes, and the grooves are internally provided with lower quick connectors which are connected with ballast water pipelines in the sinking pad body.
The rubber buffer block is made of solid rubber or rubber with a cavity, and is provided with a through hole for installing the lower quick connector.
The connecting pieces are uniformly arranged on the upper surfaces of pile shoes of the self-elevating platform/working ship, rubber pads are arranged between each connecting piece and each pile shoe, and after pile shoe seats of the self-elevating platform/working ship reach corresponding grooves, the connecting pieces are welded with the sinking pad bodies, so that the sinking pad bodies are connected with the self-elevating platform/working ship.
The aim of the invention can be achieved by the following technical scheme.
The invention relates to a use method of a detachable mat device of a self-elevating platform/workboat, which comprises the following steps:
step one: prefabricating a mat body;
step two: investigation of the foundation foundations of an expected working site of the jack-up platform/work vessel;
step three: judging whether the existing pile end form of the self-elevating platform/working ship is suitable for the foundation situation of the expected operation site, if so, executing the step eight, if the pile end is the pile shoe which is not suitable for the expected well site operation, executing the step four, and if the pile end is provided with the sinking pad body which is not suitable for the expected well site operation, executing the step nine;
step four: arranging the sinking pad body in the dock in advance, at the moment, arranging a rubber buffer block and a lower quick connector in a groove of the sinking pad body in advance, pumping ballast water to ensure that the sinking pad body cannot float in the abutting process, and opening a dock gate after filling water in the dock;
step five: towing the self-elevating platform/working ship into a dock, installing an upper quick connector at the bottom of the pile shoe at the pile punching pipeline position, and arranging a pile shoe seat into a groove in the mat body;
step six: confirming that the ballast water pipeline in the mat body is successfully connected with the pile punching pipeline of the pile shoe through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, exposing the upper surface of the mat body, and facilitating welding construction;
step seven: a rubber pad is paved on the upper surface of the pile shoe, a connecting piece is welded on the upper surface of the mat body, a dock gate is opened after the dock is filled with water, and the connected self-elevating platform/working ship and the mat body are pulled away from the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/working ship, and executing the second step on the next expected operation site of the self-elevating platform/working ship according to the operation plan;
step nine: the connected self-elevating platform/working ship and the sinking pad body are towed into the dock in parallel, and the dock gate is closed;
step ten: cutting and removing the welded connecting piece in a floating state, and removing a rubber pad at the upper part of the pile shoe;
step eleven: and (3) pumping ballast water into the mat body to enable the mat body to be separated from the self-elevating platform/working ship under the action of gravity, automatically disconnecting a ballast water pipeline, removing an upper quick connector on the pile shoe underwater, opening a dock gate, towing the self-elevating platform/working ship separated from the mat body out of a dock, and executing the step (eight).
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
according to the detachable mat device for the self-elevating platform/working ship, the rubber buffer blocks are arranged at the positions of the grooves in contact with the pile shoe, so that the uniform transmission of load is realized, the bending moment at the end part of the pile shoe is reduced, the transformation of pile legs is avoided, and the transformation cost is reduced.
The invention adopts the steel connecting piece to realize the connection of the self-elevating platform/working ship and the detachable mat device, and the rubber pad is arranged between the connecting piece and the pile shoe for buffering, thus ensuring that the original pile shoe structure is not damaged, and further realizing the disconnection of the mat and the platform/working ship by a method of cutting the connecting piece when the mat is not needed, and having high transformation speed and low cost.
According to the detachable mat device of the self-elevating platform/working ship and the use method, the pile shoe is inserted into the detachable mat device, so that damage to the original pile shoe structure is avoided, and the transformation time and the transformation cost are effectively reduced in two stages of adding and removing the device.
The invention is designed according to the soil characteristics of the predicted pile inserting position of the self-elevating platform/working ship, and can effectively control the predicted mud entering of the self-elevating platform/working ship on the soft seabed, thereby expanding the adaptive operation range of the original platform/working ship.
Drawings
FIG. 1 is a schematic view of the whole structure of a removable mat device of a jack-up platform/work vessel according to the present invention;
FIG. 2 is an enlarged view of a portion of the removable mat device of the jack-up platform/work vessel of the present invention;
FIG. 3 is a flow chart of a method of using the removable mat device of the jack-up platform/work vessel of the present invention.
Reference numerals: 1-jack-up platform/work vessel; 2-a mat body; 3-grooves; 4-a rubber buffer block; a 5-connector; 6-rubber pad, 7-shoe, 8-leg.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1 and 2, the detachable mat device of the jack-up platform/working vessel of the present invention is of a steel structure, and comprises a mat body 2, wherein the mat body 2 is formed by a plurality of cabins similar to the conventional mat structure, and the mat body 2 can be rectangular (4-leg jack-up platform/working vessel), approximate triangular (3-leg jack-up platform/working vessel), middle hollow rectangular (4-leg jack-up platform/working vessel) or middle hollow approximate triangular (3-leg jack-up platform/working vessel) according to the number of piles 8 in the jack-up platform/working vessel 1. The upper surface of the mat body 2 is internally provided with grooves 3 for installing the pile shoes 7, and the positions, the sizes, the shapes and the numbers of the grooves 3 are matched with the pile shoes 7, so that the mat is suitable for the shapes of the pile shoes 7, and the mat can be disc-shaped, rectangular and the like. Each groove 3 is internally provided with a rubber buffer block 4, the rubber buffer blocks 4 can be made of solid rubber or rubber with a cavity, the whole grooves 3 can be not fully filled with the rubber buffer blocks 4, and a plurality of rubber buffer blocks can be distributed in the grooves 3. The rubber buffer block 4 is provided with a through hole for installing the lower quick connector. The lower quick connector is arranged in the groove 3 and is connected with a ballast water pipeline in the immersed cushion body 2, the upper quick connector is arranged in the pile shoe 7 of the self-elevating platform/working ship 1 and is connected with a pile flushing pipeline in the pile leg 8, and the connection of the ballast water pipeline and the pile flushing pipeline is realized through the connection of the upper quick connector and the lower quick connector. After the pile shoe 7 of the jack-up platform/working ship 1 is mounted to the corresponding groove 3, the connection of the mat body 2 and the jack-up platform/working ship 1 is fixedly achieved through the connecting piece 5.
The connecting pieces 5 are uniformly arranged on the upper surfaces of pile shoes 7 of the jack-up platform/working ship 1, rubber pads 6 are arranged between each connecting piece 5 and each pile shoe 7, after the pile shoe 7 of the jack-up platform/working ship 1 is seated to the corresponding groove 3, the connecting pieces 5 are welded with the mat body 2, the pile shoes 7 are fixed in the corresponding grooves 3, and then the mat body 2 is connected with the jack-up platform/working ship 1.
As shown in fig. 3, the method for using the detachable mat device of the self-elevating platform/working ship comprises the following steps:
step one: a detachable mat body 2 can be prefabricated in a shipyard;
step two: investigation of the foundation foundations of an intended working site of the jack-up platform/work vessel 1;
step three: judging whether the existing pile end form of the jack-up platform/working ship 1 is suitable for the foundation situation of an expected operation site, if so, executing the step eight if the pile end is the pile shoe 7 which is not suitable for the expected well site operation, and if so, executing the step nine if the pile end is provided with the mat body 2 which is not suitable for the expected well site operation;
step four: arranging the sinking pad body 2 into the dock in advance, at the moment, arranging the rubber buffer block 4 and the lower quick connector in the groove 3 in advance, pumping ballast water to ensure that the sinking pad body cannot float in the abutting process, and opening a dock gate after filling water into the dock;
step five: towing the jack-up platform/work vessel 1 into the dock, installing an upper quick connector (underwater installation) at the bottom of the pile shoe 7 at the pile-flushing pipeline position, and seating the pile shoe 7 in the groove 3 in the mat body 2;
step six: confirming that the water pressing and carrying pipeline in the mat body 2 is successfully connected with the pile punching pipeline of the pile shoe 7 through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, exposing the upper surface of the mat body 2, and facilitating welding construction;
step seven: a rubber pad 6 is paved on the upper surface of the pile shoe 7, the connecting piece 5 is welded on the upper surface of the mat body 2, a dock gate is opened after the dock is filled with water, and the connected jack-up platform/working ship 1 and the mat body 2 are pulled away from the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/work boat 1, and executing the second step on the next expected operation site of the self-elevating platform/work boat 1 according to the operation plan;
step nine: the self-elevating platform/working ship 1 and the sinking pad body 2 which are connected are towed into a dock in parallel, and a dock gate is closed;
step ten: cutting and removing the welded connection piece 5 in a floating state, and removing the rubber pad 6 at the upper part of the pile shoe 7;
step eleven: ballast water is pumped into the mat body 2 so that the mat body is separated from the jack-up platform/work boat 1 under the action of gravity, the ballast water pipeline is automatically disconnected, the upper quick connector on the pile shoe 7 is removed underwater, the dock gate is opened, the jack-up platform/work boat 1 separated from the mat body 2 is towed out of the dock, and the step eight is executed.
By using the detachable mat device of the self-elevating platform/working ship and the use method, the self-elevating platform/working ship 1 can be suitable for silt geology with poor foundation bearing capacity, when the self-elevating platform/working ship 1 leaves, partial buoyancy can be provided by evacuating ballast water in the mat body 2 through a ballast system, and the ship body on the self-elevating platform can also provide partial buoyancy by entering water, so that the self-elevating platform/working ship is separated from the sea bottom under the action of the two partial buoyancy. The rubber buffer blocks 4 and the rubber pads 6 can reduce the connection rigidity between the pile shoe and the pile shoe body, avoid the transformation of the pile leg 8 and the pile shoe 7 of the self-elevating platform/working ship 1, and facilitate the separation of the pile shoe 7 and the pile shoe body 2.
Although the function and operation of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific functions and operations, but the above-described specific embodiments are merely illustrative, not restrictive, and many forms can be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the appended claims, which are included in the protection of the present invention.

Claims (5)

1. The application method of the detachable mat device of the self-elevating platform/working ship is characterized in that the detachable mat device of the self-elevating platform/working ship comprises a mat body (2), grooves (3) for installing pile shoes (7) are formed in the upper surface of the mat body (2) inwards, rubber buffer blocks (4) are arranged in each groove (3), and after the pile shoes (7) of the self-elevating platform/working ship (1) are seated in the corresponding grooves (3), connecting pieces (5) are welded with the mat body (2) to realize connection of the mat body (2) and the self-elevating platform/working ship (1); a rubber pad (6) is arranged between each connecting piece (5) and each pile shoe (7), and a lower quick connector is arranged in each groove (3) and connected with a ballast water pipeline in the immersed cushion body (2); the using method comprises the following steps:
step one: prefabricating a mat body (2);
step two: investigation of the foundation foundations of an intended working site of the jack-up platform/work vessel (1);
step three: judging whether the existing pile end form of the self-elevating platform/working ship (1) is suitable for the foundation situation of the expected operation site, if so, executing the step eight, if the pile end is the pile shoe (7) which is not suitable for the operation of the expected operation site, executing the step four, and if the pile end is provided with the sinking pad body (2) which is not suitable for the operation of the expected operation site, executing the step nine;
step four: arranging the mat body (2) in the dock in advance, at the moment, arranging a rubber buffer block (4) and a lower quick connector in the groove (3) in advance, pumping ballast water to ensure that the mat body cannot float in the butt joint process, and opening a dock gate after filling water in the dock;
step five: towing the self-elevating platform/working ship (1) into a dock, installing an upper quick connector at the bottom of a pile shoe (7) at the position of a pile punching pipeline, and sitting the pile shoe (7) into a groove (3) in the mat body (2);
step six: confirming that the water pressing and carrying pipeline in the immersed cushion body (2) is successfully connected with the pile punching pipeline of the pile shoe (7) through the connection of the upper quick connector and the lower quick connector, reducing the height of the water surface in the dock, exposing the upper surface of the immersed cushion body (2), and facilitating welding construction;
step seven: a rubber pad (6) is paved on the upper surface of a pile shoe (7), a connecting piece (5) is welded on the upper surface of a mat body (2), a dock gate is opened after the dock is filled with water, and the connected self-elevating platform/working ship (1) and the mat body (2) are towed out of the dock;
step eight: performing operation according to the operation mode of the conventional self-elevating platform/working ship (1), and executing a second step on the next expected operation site of the self-elevating platform/working ship (1) according to an operation plan;
step nine: the self-elevating platform/working ship (1) and the sinking pad body (2) which are connected are towed into a dock in parallel, and a dock gate is closed;
step ten: cutting and removing the welded connecting piece (5) in a floating state, and removing a rubber pad (6) at the upper part of the pile shoe (7);
step eleven: and (3) pumping ballast water into the immersed cushion body (2) to enable the immersed cushion body to be separated from the self-elevating platform/working ship (1) under the action of gravity, automatically disconnecting a ballast water pipeline, removing an upper quick connector on the pile shoe (7) underwater, opening a dock gate, pulling the self-elevating platform/working ship (1) separated from the immersed cushion body (2) out of a dock, and executing the step (eight).
2. The method of using a removable mat device for a jack-up platform/work vessel according to claim 1, wherein the mat body (2) is constituted by a number of cabins, the mat body (2) being rectangular or triangular depending on the number of legs (8) in the jack-up platform/work vessel (1).
3. Use of a removable mat device for jack-up platforms/work vessels according to claim 1, characterized in that the position, size, shape, number of grooves (3) are matched to the pile shoe (7).
4. The use method of the detachable mat device for the self-elevating platform/working vessel according to claim 1, wherein the rubber buffer block (4) is made of solid rubber or rubber with a cavity, and the rubber buffer block (4) is provided with a through hole for installing a lower quick connector.
5. Use of a removable mat device for a jack-up platform/work vessel according to claim 1, characterized in that the connection elements (5) are evenly arranged on the upper surface of the pile shoe (7) of the jack-up platform/work vessel (1).
CN202210703951.XA 2022-06-21 2022-06-21 Detachable mat device of self-elevating platform/working ship and use method Active CN115162330B (en)

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CN115162330B true CN115162330B (en) 2023-04-21

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203403409U (en) * 2013-06-18 2014-01-22 天津新港船舶重工有限责任公司 Self-elevating platform pile shoe structure
US9371625B2 (en) * 2014-06-09 2016-06-21 Offshore Technology Development Pte Ltd Modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations
CN109778822A (en) * 2019-03-13 2019-05-21 交通运输部天津水运工程科学研究所 A kind of disposable shoe expansion instrument of jack-up unit and application method

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