CN116873119B - Method for constructing marine artificial island cofferdam - Google Patents
Method for constructing marine artificial island cofferdam Download PDFInfo
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- CN116873119B CN116873119B CN202311148670.3A CN202311148670A CN116873119B CN 116873119 B CN116873119 B CN 116873119B CN 202311148670 A CN202311148670 A CN 202311148670A CN 116873119 B CN116873119 B CN 116873119B
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 263
- 239000010959 steel Substances 0.000 claims abstract description 263
- 238000010276 construction Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/002—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for goods other than bulk goods
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- Civil Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
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Abstract
The application relates to a steel cylinder marine transportation method and a marine artificial island cofferdam construction method, and belongs to the technical field of hydraulic engineering. The steel cylinder marine transportation method comprises the following steps: loading a fixing device on a transport ship, wherein the fixing device comprises a pedestal fixed on the transport ship and fixing components used for fixing a steel cylinder, the pedestal comprises a plurality of layers of supporting tables which are sequentially arranged from bottom to top, and each layer of supporting table is provided with a plurality of fixing components; correspondingly hoisting steel cylinders with different diameters to each layer of supporting tables of the fixing device, hoisting one steel cylinder on each layer of supporting table, and sleeving the steel cylinder positioned on the lower layer outside the supporting table and the steel cylinder positioned on the adjacent upper layer when hoisting the steel cylinder; after each steel cylinder is hoisted, fixing the steel cylinder by using a fixing component; after all the steel cylinders to be hoisted are fixed, the steel cylinders are transported to a construction water area through a transport ship. The steel cylinder marine transportation method can transport a plurality of steel cylinders once, and the transportation efficiency of the steel cylinders is obviously improved.
Description
Technical Field
The application belongs to the technical field of hydraulic engineering, in particular relates to the technical field of construction of offshore artificial islands, and particularly relates to a steel cylinder offshore transportation method and a construction method of an offshore artificial island cofferdam.
Background
The steel cylinder cofferdam island-making technology is a method for quickly building an artificial island in the sea, and a large-diameter steel cylinder is one of main components of the artificial island cofferdam. At present, when constructing a cofferdam of an artificial island, a steel cylinder is usually manufactured in a prefabrication factory, and then the steel cylinder is transported to a construction site of the artificial island by a transport ship. In order to facilitate the transportation of steel cylinders, some steel cylinder marine transportation fixtures have been developed (see patent CN206766286U, CN215922480U, etc.). However, the existing steel cylinder marine transportation fixing device can only fix one steel cylinder, so that a transportation ship can only transport one steel cylinder at a time, the transportation efficiency is extremely low, and the construction period of the artificial island cofferdam is seriously affected. Therefore, how to improve the transportation efficiency of the steel cylinder and shorten the construction period of the man-made island cofferdam is a technical problem which needs to be solved currently.
Disclosure of Invention
Aiming at the technical problems, the application provides a steel cylinder marine transportation method and a marine man-made island cofferdam construction method, and the steel cylinder marine transportation method can transport a plurality of steel cylinders at one time, thereby remarkably improving the transportation efficiency of the steel cylinders.
The application provides a steel cylinder marine transportation method, which comprises the following steps:
loading a fixing device on a transport vessel, the fixing device comprising a pedestal fixed to the transport vessel and a fixing assembly for fixing the steel cylinder; the pedestal comprises a plurality of layers of supporting tables which are sequentially arranged from bottom to top, and the sizes of the supporting tables are reduced layer by layer from bottom to top so that the outer edges of the plurality of layers of supporting tables form a step shape; each layer of supporting table is provided with a plurality of fixing components, the fixing components on each layer of supporting table are positioned at the step surface, and the plurality of fixing components on the same layer of supporting table are used for jointly fixing a steel cylinder;
correspondingly hoisting steel cylinders with different diameters to each layer of supporting tables of the fixing device from top to bottom or from bottom to top according to the sequence from small to large or from large to small in diameter, and hoisting one steel cylinder on each layer of supporting table; when the steel cylinder is hoisted, the steel cylinder is hoisted to the step surface, and the steel cylinder positioned at the lower layer is sleeved outside the supporting table and the steel cylinder positioned at the adjacent upper layer; after each steel cylinder is hoisted, fixing the steel cylinder by utilizing a plurality of fixing components on the corresponding layer supporting table;
after all the steel cylinders to be hoisted are fixed, the steel cylinders are transported to a construction water area through a transport ship.
In some of these embodiments, the steel cylinder is lifted so that its axis is placed on the support table in a vertical state.
In some of these embodiments, the securing assembly includes securing clips arranged in pairs; when the steel cylinder is hoisted, the lower end cylinder wall of the steel cylinder is placed between the pair of fixed clamping pieces, so that the lower end cylinder wall of the steel cylinder is clamped and fixed by the fixed clamping pieces.
In some embodiments, the fixing clamp comprises a connecting part arranged parallel to the table top of the supporting table and a clamping part arranged perpendicular to the table top of the supporting table, wherein the connecting part is fixedly connected to the table top of the supporting table, and the clamping part is used for fitting and connecting the wall of the steel cylinder.
In some embodiments, the support table is cylindrical, the diameter of the cylindrical support table is reduced from bottom to top layer by layer, and the multiple layers of support tables are coaxially arranged; a plurality of fixed components positioned on the same layer of supporting table are uniformly distributed on the step surface along the circumferential direction of the supporting table.
In some of these embodiments, a steel cylinder hoist is used to hoist the steel cylinder; the steel cylinder lifting appliance comprises a lifting frame, wherein the lifting frame is connected with a plurality of clamps used for clamping the upper end cylinder wall of the steel cylinder, and the clamps are distributed in an annular shape; the clamp is connected to the hanger in a sliding manner so as to move relative to the hanger along the annular radial direction; before hoisting the steel cylinder, the clamp is moved to adjust the position of the clamp so that the position of the clamp is matched with the diameter of the steel cylinder to be hoisted.
Besides, the application also provides a method for constructing the marine artificial island cofferdam, which comprises the following steps:
dividing a required steel cylinder into steel cylinders with different diameters and various specifications according to the shape of the artificial island cofferdam to be built;
the steel cylinders with different specifications are transported to a construction water area by adopting the steel cylinder marine transportation method;
and hoisting the steel cylinders with different specifications transported by the transport ship to the preset positions corresponding to the steel cylinders with different specifications, and sinking the steel cylinders so as to enclose the man-made island cofferdam by the steel cylinders.
In some of these embodiments, steel cylinders of different gauges are alternately arranged to enclose an artificial island cofferdam.
In some embodiments, when a plurality of closed areas are arranged in the man-made island cofferdam to be built, determining the specification number of the required steel cylinders according to the number of the closed areas; the steel cylinders with the same specification are adopted to enclose a closed area, and the steel cylinders with different specifications are adopted to enclose different closed areas.
In some of these embodiments, when the man-made island cofferdam to be constructed is of symmetrical construction, mutually symmetrical parts are arranged with steel cylinders of the same specification.
Compared with the prior art, the application has the advantages and positive effects that:
1. according to the steel cylinder marine transportation method provided by the application, through the fixing device arranged on the transportation ship, steel cylinders with different diameters are sleeved and fixed on the transportation ship from outside to inside in sequence, so that the fixation and transportation of a plurality of steel cylinders are realized, the transportation efficiency of the steel cylinders is obviously improved, and the construction period is shortened;
2. in the steel cylinder marine transportation method provided by the application, the adopted fixing device has a simple structure, the construction cost is not greatly increased, and on the contrary, the construction cost can be greatly reduced due to the improvement of the transportation efficiency;
3. according to the method for constructing the marine artificial island cofferdam, steel cylinders required for constructing the artificial island cofferdam are divided into multiple specifications with different diameters, so that the steel cylinders with different specifications are transported to a construction water area from the same transport ship in a mode of sleeving the steel cylinders from outside to inside, and then the steel cylinders with different specifications are hoisted to preset positions corresponding to the steel cylinders with different specifications for sinking, so that the construction period of the artificial island cofferdam is obviously shortened on the premise of not affecting the construction quality of the artificial island cofferdam.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a block flow diagram of a steel cylinder marine transportation method provided by an embodiment of the present application;
FIG. 2 is a front view of a fixture used in the steel cylinder marine transportation method according to the embodiment of the present application;
FIG. 3 is a top view of a fixture used in the steel cylinder marine transportation method according to the embodiment of the present application;
FIG. 4 is a schematic view of a steel cylinder marine transportation method according to an embodiment of the present application, in which a fixing device is loaded on a transportation ship;
FIG. 5 is a schematic view of a steel cylinder in a method for marine transportation of steel cylinders according to an embodiment of the present application after the steel cylinder is fixed to a transport vessel;
FIG. 6 is a front view of a steel cylinder and a fixing device after the steel cylinder is fixed in the marine transportation method of the steel cylinder according to the embodiment of the present application;
FIG. 7 is a top view of a steel cylinder and a fixing device after the steel cylinder is fixed in the marine transportation method of the steel cylinder according to the embodiment of the present application;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;
FIG. 9 is an enlarged partial schematic view at B in FIG. 8;
FIG. 10 is a front view of a steel cylinder spreader employed in the steel cylinder marine transportation method provided by the embodiment of the present application;
FIG. 11 is a bottom view of a steel cylinder spreader employed in a steel cylinder marine transportation method according to an embodiment of the present application;
FIG. 12 is a schematic view of a process of hoisting a steel cylinder in a steel cylinder marine transportation method according to an embodiment of the present application;
FIG. 13 is a block flow diagram of a method for constructing an offshore artificial island cofferdam provided by an embodiment of the present application;
FIG. 14 is a schematic view of an artificial island cofferdam employing a first steel cylinder arrangement in an offshore artificial island cofferdam construction method provided by an embodiment of the present application;
FIG. 15 is a schematic view of an artificial island cofferdam employing a second steel cylinder arrangement in an offshore artificial island cofferdam construction method provided by an embodiment of the present application;
fig. 16 is a schematic diagram of an artificial island cofferdam adopting a third steel cylinder arrangement mode in the method for constructing an offshore artificial island cofferdam provided by the embodiment of the application.
In the figure:
1. a fixing device; 2. a steel cylinder; 3. a transport vessel; 4. a steel cylinder sling;
11. a pedestal; 111. a support table; 12. a fixing assembly; 121. fixing the clamping piece; 1211. a connection part; 1212. a clamping part; 1213. stiffening ribs;
21. a first steel cylinder; 22. a second steel cylinder; 23. a third steel cylinder;
41. a hanging bracket; 42. a clamp; 43. a slide rail.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.
In the description of the present application, 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 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 application will be understood in specific cases by those of ordinary skill in the art.
In one exemplary embodiment of the steel cylinder marine transportation method of the present application, as shown in fig. 1 to 12, the steel cylinder marine transportation method comprises the steps of:
s101, loading a fixing device 1 on a transport ship 3, wherein the fixing device 1 comprises a pedestal 11 fixed on the transport ship 3 and a fixing assembly 12 for fixing a steel cylinder 2; the pedestal 11 includes a plurality of layers of support tables 111 arranged in order from bottom to top, and the size of the support tables 111 decreases from bottom to top layer by layer so that the outer edges of the plurality of layers of support tables 111 form a step shape; each layer of supporting table 111 is provided with a plurality of fixing components 12, the fixing components 12 on each layer of supporting table 111 are positioned at the step surface, and the plurality of fixing components 12 on the same layer of supporting table 111 are used for jointly fixing one steel cylinder 2;
s102, correspondingly hoisting steel cylinders 2 with different diameters onto all layers of supporting tables 111 of the fixing device 1 from top to bottom or from bottom to top in sequence from small to large or from large to small in diameter, and hoisting one steel cylinder 2 on each layer of supporting table 111; when the steel cylinder 2 is hoisted, the steel cylinder 2 is hoisted to the step surface, and the steel cylinder 2 positioned at the lower layer is sleeved outside the supporting table 111 and the steel cylinder 2 positioned at the adjacent upper layer; after each steel cylinder 2 is hoisted, the steel cylinder 2 is fixed by a plurality of fixing components 12 on a corresponding layer supporting table 111;
s103, after all the steel cylinders 2 to be hoisted are fixed, the steel cylinders 2 are transported to a construction water area through a transport ship 3.
According to the steel cylinder marine transportation method, the steel cylinders 2 with different diameters are sequentially sleeved and fixed on the transportation ship 3 from outside to inside through the fixing device 1 arranged on the transportation ship 3, so that the fixation and transportation of a plurality of steel cylinders 2 are realized, the transportation efficiency of the steel cylinders 2 is obviously improved, and the construction period is shortened. In the above-described steel cylinder marine transportation method, the fixing device 1 is simple in structure, and does not cause a significant increase in construction cost, but on the contrary, the construction cost can be significantly reduced due to an improvement in transportation efficiency. In addition, in the above-mentioned steel cylinder marine transportation method, when the fixing device 1 is provided to fix a plurality of steel cylinders 2, one steel cylinder 2 is fixed on each layer of supporting table 111, and because the supporting table 111 is stepped and raised layer by layer, and the heights of the steel cylinders 2 used in one construction project are consistent, the upper ends of the steel cylinders 2 are also stepped and raised step by step from outside to inside, so that the steel cylinders 2 are convenient to hoist.
In step S102, as shown in fig. 11, when the steel cylinder 2 is hoisted, the axis of the steel cylinder 2 is placed on the support base 111 in a vertical state so as to hoist the steel cylinder 2 layer by layer.
In the above-described fixing device 1 used in the steel cylinder marine transportation method, as shown in fig. 3, the supporting table 111 is cylindrical, the diameter of the cylindrical supporting table 111 is reduced from bottom to top layer by layer, and the supporting tables 111 are coaxially arranged. By adopting the cylindrical supporting table 111, the steel cylinder 2 can be better matched with the steel cylinder 2, and the transportation of the steel cylinder 2 with smaller diameter difference can be realized. Preferably, as shown in FIG. 2, the number of layers of the support 111 is 2-4. In order to avoid influencing the construction quality of the artificial island cofferdam, the diameter difference of the steel cylinders 2 cannot be too large, so that the specifications of the steel cylinders 2 are not too large in the same construction project, and the number of layers of the supporting table 111 can be determined according to the specifications of the steel cylinders 2.
Further, as shown in fig. 3, a plurality of fixing members 12 disposed on the same layer of support base 111 are uniformly distributed on the stepped surface along the circumferential direction of the support base 111. The fixed subassembly 12 of setting up like this can ensure that steel drum 2 is fixed firm, simultaneously, makes the atress even between steel drum 2 and each fixed subassembly 12, has effectively avoided fixed subassembly 12 to be destroyed because of the atress is uneven in the transportation.
To facilitate the fixing of the steel cylinder 2, as shown in fig. 8 and 9, the fixing assembly 12 includes fixing clips 121 arranged in pairs in this embodiment; as shown in fig. 11, when the steel cylinder 2 is hoisted, the lower end cylinder wall of the steel cylinder 2 is interposed between the pair of fixing clips 121 to clamp and fix the lower end cylinder wall of the steel cylinder 2 by the fixing clips 121. Specifically, as shown in fig. 9, in the present embodiment, the fixing clip 121 includes a connecting portion 1211 disposed parallel to the table surface of the supporting table 111 and a clamping portion 1212 disposed perpendicular to the table surface of the supporting table 111, the connecting portion 1211 is fixedly connected to the table surface of the supporting table 111, and the clamping portion 1212 is used for attaching and connecting the wall of the steel cylinder 2; when fixing the steel cylinder 2, the lower end of the steel cylinder 2 is inserted between the clamping portions 1212 of the two fixing clips 121, the clamping portions 1212 are bonded to the wall of the steel cylinder 2, and the clamping portions 1212 and the wall of the steel cylinder 2 may be fixed by appropriate welding. The fixing component 12 with the structure has simple structure and low manufacturing cost. It will be appreciated that stiffening ribs 1213 may be provided between the connecting portion 1211 and the clamping portion 1212 to increase the structural rigidity and strength of the securing clip 121.
In order to facilitate the hoisting of the steel cylinder 2, as shown in fig. 10 to 12, in this embodiment, a steel cylinder hoist 4 is used to hoist the steel cylinder 2; the steel cylinder lifting appliance 4 comprises a lifting bracket 41, wherein the lifting bracket 41 is connected with a plurality of clamps 42 for clamping the upper end cylinder wall of the steel cylinder 2, and the clamps 42 are distributed in a ring shape; the clamp 42 is slidably connected to the hanger 41 to move in a radial direction of the ring shape with respect to the hanger 41; before hoisting the steel cylinder 2, the clamp 42 is moved to adjust the position of the clamp 42 so that the position of the clamp 42 matches the diameter of the steel cylinder 2 to be hoisted. It should be noted that, as shown in fig. 11, in this embodiment, the hanger 41 is provided with a plurality of sliding rails 43 extending along the annular radial direction, and the clamps 42 are slidably connected to the sliding rails 43 in a one-to-one correspondence manner; by sliding the clamp 42 along the slide rail 43, a movement of the clamp 42 relative to the hanger 41 is achieved, matching steel cylinders 2 of different diameters.
As shown in fig. 13, the embodiment of the application also provides a method for constructing an offshore artificial island cofferdam, which comprises the following steps:
s201, dividing a required steel cylinder 2 into steel cylinders 2 with different diameters and various specifications according to the shape of the artificial island cofferdam to be built;
s202, conveying steel cylinders 2 with different specifications to a construction water area by adopting the steel cylinder marine conveying method;
s203, hoisting the steel cylinders 2 with different specifications transported by the transport ship 3 to the preset positions corresponding to the steel cylinders 2 with different specifications, and sinking the steel cylinders to enclose the man-made island cofferdam through the steel cylinders 2.
In the above-described method for constructing an offshore artificial island cofferdam, the diameter difference between two adjacent steel cylinders 2 is 0.3m to 0.5m. Because the diameter of the steel cylinder 2 used for constructing the artificial island cofferdam is usually more than 20 meters, the steel cylinder 2 is divided into different specifications according to the diameter difference of 0.3 m-0.5 m, the construction quality of the artificial island cofferdam is not greatly influenced, and the diameter difference of 0.3 m-0.5 m can realize the sleeving transportation of the steel cylinder 2, so that the transportation efficiency of the steel cylinder 2 is improved. The number of steel cylinders 2 is preferably 2 to 4, and too many division specifications may cause too large diameter difference between the largest steel cylinder 2 and the smallest steel cylinder 2, which affects the construction quality of the artificial island cofferdam.
According to the method for constructing the offshore artificial island cofferdam, the steel cylinders 2 required for constructing the artificial island cofferdam are divided into a plurality of specifications with different diameters, so that the steel cylinders 2 with different specifications are transported to a construction water area from the same transport ship 3 in a mode of sleeving the steel cylinders from outside to inside, and then the steel cylinders 2 with different specifications are hoisted to the preset positions corresponding to the steel cylinders 2 with different specifications for sinking, so that the construction period of the artificial island cofferdam is obviously shortened on the premise of not affecting the construction quality of the artificial island cofferdam.
Fig. 14 shows an arrangement of one type of steel cylinders 2 in the artificial island cofferdam, and in order to clearly show steel cylinders 2 of different specifications, the diameter difference of the steel cylinders 2 of different specifications (the first steel cylinder 21, the second steel cylinder 22 and the third steel cylinder 23 are sequentially arranged from the large to the small) is enlarged in fig. 14, and in actual construction, the ratio of the diameter difference of the steel cylinders 2 of different specifications to the diameter of the steel cylinder 2 is smaller. As shown in fig. 14, steel cylinders 2 of different specifications are alternately arranged to enclose an artificial island cofferdam. The method comprises the following steps: the first steel cylinder 21, the second steel cylinder 22 and the third steel cylinder 23 (i.e., the steel cylinder 2 of the gauge from large to small) are circulated alternately around the man-made island cofferdam. The arrangement mode of the steel cylinder 2 is beneficial to ensuring the construction quality of the artificial island cofferdam.
Fig. 15 shows another arrangement of steel cylinders 2 in the artificial island cofferdam, and in order to clearly show steel cylinders 2 of different specifications, the diameter difference of the steel cylinders 2 of different specifications is enlarged (the specifications are the first steel cylinder 21 and the second steel cylinder 22 in order from the large to the small) in fig. 15, and in actual construction, the ratio of the diameter difference of the steel cylinders 2 of different specifications to the diameter of the steel cylinders 2 is smaller. As shown in fig. 15, when there are a plurality of closed areas in the man-made island cofferdam to be constructed, the number of specifications of the required steel cylinders 2 is determined according to the number of closed areas; the steel cylinders 2 with the same specification are adopted to enclose a closed area, and different closed areas are adopted to enclose the steel cylinders 2 with different specifications. Specifically, the upper closed region is surrounded by the second steel cylinder 22, and the lower closed region is surrounded by the first steel cylinder 21. The arrangement mode of the steel cylinder 2 is beneficial to ensuring the construction quality of the artificial island cofferdam.
Fig. 16 shows still another arrangement of steel cylinders 2 in the artificial island cofferdam, and in order to clearly show steel cylinders 2 of different specifications, the diameter difference of the steel cylinders 2 of different specifications is enlarged (the specifications are the first steel cylinder 21 and the second steel cylinder 22 in order from the large to the small) in fig. 16, and in actual construction, the ratio of the diameter difference of the steel cylinders 2 of different specifications to the diameter of the steel cylinders 2 is smaller. As shown in fig. 16, when the artificial island cofferdam to be constructed has a symmetrical structure, mutually symmetrical parts are arranged with steel cylinders 2 of the same specification. Specifically, the second steel cylinders 22 are used for the upper left part and the upper right part symmetrical thereto, and the first steel cylinders 21 are used for the lower left part and the lower right part symmetrical thereto. The arrangement mode of the steel cylinder 2 is beneficial to ensuring the construction quality of the artificial island cofferdam.
By way of illustration of various embodiments of the steel cylinder marine transportation method and offshore artificial island cofferdam construction method of the present application, it can be seen that the steel cylinder marine transportation method and offshore artificial island cofferdam construction method embodiments of the present application have at least one or more of the following advantages:
1. according to the steel cylinder marine transportation method provided by the embodiment of the application, through the fixing device 1 arranged on the transportation ship 3, the steel cylinders 2 with different diameters are sleeved and fixed on the transportation ship 3 from outside to inside in sequence, so that the fixation and transportation of a plurality of steel cylinders 2 are realized, the transportation efficiency of the steel cylinders 2 is obviously improved, and the construction period is shortened;
2. in the steel cylinder marine transportation method provided by the embodiment of the application, the adopted fixing device 1 has a simple structure, the construction cost is not greatly increased, and on the contrary, the construction cost can be greatly reduced due to the improvement of the transportation efficiency;
3. according to the method for constructing the marine artificial island cofferdam, provided by the embodiment of the application, the steel cylinders 2 required for constructing the artificial island cofferdam are divided into a plurality of specifications with different diameters, so that the steel cylinders 2 with different specifications are transported to a construction water area from the same transport ship 3 in a mode of sleeving the steel cylinders from outside to inside, and then the steel cylinders 2 with different specifications are hoisted to the preset positions corresponding to the steel cylinders 2 with different specifications for sinking, so that the construction period of the artificial island cofferdam is obviously shortened on the premise that the construction quality of the artificial island cofferdam is not influenced.
Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; while the application has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present application or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the application, it is intended to cover the scope of the application as claimed.
Claims (5)
1. The method for constructing the marine artificial island cofferdam is characterized by comprising the following steps of:
dividing a required steel cylinder into steel cylinders with different diameters and various specifications according to the shape of the artificial island cofferdam to be built;
transporting the steel cylinders with different specifications to a construction water area by adopting a steel cylinder marine transportation method;
hoisting the steel cylinders with different specifications transported by the transport ship to preset positions corresponding to the steel cylinders with different specifications for sinking so as to enclose an artificial island cofferdam through the steel cylinders;
when the man-made island cofferdam to be built is provided with a plurality of closed areas, determining the specification number of required steel cylinders according to the number of the closed areas; the steel cylinders with the same specification are adopted to enclose one closed area, and different closed areas are adopted to enclose the steel cylinders with different specifications;
the steel cylinder marine transportation method comprises the following steps:
loading a securing device on a transport vessel, the securing device comprising a pedestal secured to the transport vessel and a securing assembly for securing a steel cylinder; the pedestal comprises a plurality of layers of supporting tables which are sequentially arranged from bottom to top, and the sizes of the supporting tables are reduced layer by layer from bottom to top so that the outer edges of the plurality of layers of supporting tables form a step shape; each layer of supporting table is provided with a plurality of fixing components, the fixing components on each layer of supporting table are positioned at the step surface, and the fixing components on the same layer of supporting table are used for jointly fixing one steel cylinder;
correspondingly hoisting steel cylinders with different diameters onto each layer of supporting tables of the fixing device from top to bottom or from bottom to top in sequence from small to large or from large to small in diameter, and hoisting one steel cylinder on each layer of supporting tables; when the steel cylinder is hoisted, the steel cylinder is hoisted to the step surface, and the steel cylinder positioned at the lower layer is sleeved outside the supporting table and the steel cylinder positioned at the adjacent upper layer; after each steel cylinder is hoisted, fixing the steel cylinder by utilizing a plurality of fixing assemblies on a corresponding layer of supporting tables;
after all the steel cylinders to be hoisted are fixed, transporting the steel cylinders to a construction water area through the transport ship;
the steel cylinder lifting device is used for lifting the steel cylinder; the steel cylinder lifting appliance comprises a lifting frame, wherein the lifting frame is connected with a plurality of clamps used for clamping the upper end cylinder wall of the steel cylinder, and the clamps are distributed in an annular shape; the clamp is slidably connected to the hanger to move in a radial direction of the ring relative to the hanger; before hoisting the steel cylinder, moving the clamp to adjust the position of the clamp so that the position of the clamp is matched with the diameter of the steel cylinder to be hoisted.
2. The method of constructing an offshore artificial island cofferdam of claim 1, wherein the steel cylinder is vertically placed on the supporting table while being hoisted.
3. The method of constructing an offshore artificial island cofferdam of claim 2, wherein said fixing assembly includes fixing clips arranged in pairs; when the steel cylinder is hoisted, the lower end cylinder wall of the steel cylinder is placed between the fixing clamping pieces arranged in pairs, so that the fixing clamping pieces are used for clamping and fixing the lower end cylinder wall of the steel cylinder.
4. A method of constructing an offshore artificial island cofferdam as claimed in claim 3, wherein said fixing clip comprises a connecting portion disposed parallel to the table top of said supporting table and a holding portion disposed perpendicular to the table top of said supporting table, said connecting portion being fixedly connected to the table top of said supporting table, said holding portion being adapted to engage and connect the wall of said steel cylinder.
5. The method for constructing an offshore artificial island cofferdam according to claim 3 or 4, wherein the supporting table is cylindrical, the diameter of the cylindrical supporting table is reduced layer by layer from bottom to top, and a plurality of layers of supporting tables are coaxially arranged; the fixing assemblies on the same layer are uniformly distributed on the step surface along the circumferential direction of the supporting table.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148670.3A CN116873119B (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
| CN202311243085.1A CN117227906A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
| CN202311243087.0A CN117227907A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
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| CN202311148670.3A CN116873119B (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
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| CN202311243087.0A Division CN117227907A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
| CN202311243085.1A Division CN117227906A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
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| CN116873119B true CN116873119B (en) | 2023-11-07 |
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| CN202311243085.1A Pending CN117227906A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
| CN202311243087.0A Pending CN117227907A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
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| CN202311243087.0A Pending CN117227907A (en) | 2023-09-07 | 2023-09-07 | Method for constructing marine artificial island cofferdam |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536173A (en) * | 2003-04-04 | 2004-10-13 | 中港第一航务工程局第一工程公司 | Large-diameter steel cylinder vibration sinking process |
| WO2013120264A1 (en) * | 2012-02-16 | 2013-08-22 | Wong Calos | Buoyant supporting and fixing platform for supporting seaborne wind turbines, bridges, and marine structures |
| CN206766286U (en) * | 2017-05-24 | 2017-12-19 | 中国建筑第六工程局有限公司 | A kind of steel cylinder bank protection structure marine transportation fixing device |
| CN207452880U (en) * | 2017-11-13 | 2018-06-05 | 天津城建道桥工程有限公司 | A kind of combined steel sheet pile |
| CN218270864U (en) * | 2022-07-30 | 2023-01-10 | 中交天津港湾工程研究院有限公司 | Vibration sinking barrel test device |
| CN218597116U (en) * | 2022-11-23 | 2023-03-10 | 中交第一航务工程局有限公司 | Round tube body structure |
-
2023
- 2023-09-07 CN CN202311148670.3A patent/CN116873119B/en active Active
- 2023-09-07 CN CN202311243085.1A patent/CN117227906A/en active Pending
- 2023-09-07 CN CN202311243087.0A patent/CN117227907A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536173A (en) * | 2003-04-04 | 2004-10-13 | 中港第一航务工程局第一工程公司 | Large-diameter steel cylinder vibration sinking process |
| WO2013120264A1 (en) * | 2012-02-16 | 2013-08-22 | Wong Calos | Buoyant supporting and fixing platform for supporting seaborne wind turbines, bridges, and marine structures |
| CN206766286U (en) * | 2017-05-24 | 2017-12-19 | 中国建筑第六工程局有限公司 | A kind of steel cylinder bank protection structure marine transportation fixing device |
| CN207452880U (en) * | 2017-11-13 | 2018-06-05 | 天津城建道桥工程有限公司 | A kind of combined steel sheet pile |
| CN218270864U (en) * | 2022-07-30 | 2023-01-10 | 中交天津港湾工程研究院有限公司 | Vibration sinking barrel test device |
| CN218597116U (en) * | 2022-11-23 | 2023-03-10 | 中交第一航务工程局有限公司 | Round tube body structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117227906A (en) | 2023-12-15 |
| CN116873119A (en) | 2023-10-13 |
| CN117227907A (en) | 2023-12-15 |
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