KR20150049623A - Temporary upper plate for marine jacket structure and constructing method using the same - Google Patents

Abstract

The present invention relates to a temporary upper plate for a marine jacket structure and a marine jacket structure construction method using the same. According to the present invention, the marine jacket structure construction method using a temporary upper plate includes the steps of: manufacturing a jacket and the temporary upper plate on land; conveying the jacket and the temporary upper plate to a marine construction position; mounting the jacket on the seabed to enable a lower end part of a leg to be supported on the seabed and enable an upper end part to be exposed toward the upper side of sea level; installing the temporary upper plate in the upper side of the jacket; arranging a crane for a land to install a pile and a piling hammer in the upper side of the temporary upper plate; piling the upper end part of the pile using the piling hammer to fixate the lower end part of the pile to a submarine bedrock layer after inserting the pile into the leg using the crane for a land in the upper side of the temporary upper plate.

Description

Technical Field [0001] The present invention relates to a temporary top plate for a marine jacket structure and a method for constructing a marine jacket structure using the same,

The present invention relates to a temporary jacket for a marine jacket structure and a method for constructing a marine jacket structure using the jacket jacket. More particularly, the present invention relates to a jacket jacket, The present invention relates to a temporary top plate for a marine jacket structure and a method for constructing a marine jacket structure using the same, which can reduce the construction cost by minimizing the use of expensive marine equipment.

In general, marine transportation using bulk carriers, container ships, oil tankers, chemical carriers, LNG carriers, LPG carriers, etc., is advantageous in terms of transportation volume and transportation cost compared to other transportation means. Much of the trade depends on shipping. Particularly, in the shipping industry in recent years, it is pursuing the enlargement of the ship, which is aimed at securing economical efficiency by reducing the logistics cost by increasing the volume of the ship, and thus the expansion of the mooring facility and the loading / to be.

The quay wall, which is one of the most unloading facilities in the port, is a structure made by stacking concrete or rock in a port or a river to moor a large ship.

Such a wall is, for example, a mooring vessel for anchoring at the time of unloading, and the side facing the vessel is a wall, and thereafter it is a wall-like structure capable of withstanding earth pressure, such as gravity type, sheet pile type and ship type. The wall is divided into gravity type, sheet pile type, cell type, pierced type, floating type, dolphin, and mooring buoy according to the structural style.

1, a plurality of breaking blocks 2 are formed at the ends of the land facing the sea, and the breaking block 2 forming the bottom wall 1 is formed as a large It is a concrete structure of various shapes having weight.

As described above, the conventional structure is formed in a straight line in the harbor, and since the loading facility such as a crane is provided only on the land side, the loading operation is carried out in a state where only one side of the ship is in contact with the side wall 1 . In this case, the capacity of the crane is proportional to the capacity of the crane and the number of the crane. In the structure of the cargo system, the number of cranes that can be input to the crane (1) is limited due to reasons such as occupied space, There is a problem in that there is a limitation in expanding the capability.

In addition, since the time required for unloading in proportion to the size of the ship is increased, the residence time of the ship is increased, so that the usage rate of the quay wall is lowered and the logistics cost is increased.

To solve this problem, a marine jacket structure is proposed in which a pile or the like is fixed to a rock bed of the sea bed so that the vessel can berth on the sea for container loading and unloading in a sea at a distance from the pier or the land.

2 is a cross-sectional view schematically showing a configuration of a marine jacket structure according to the prior art.

As shown in FIG. 2, a marine jacket structure 10 according to the related art has a jacket leg 11 whose lower end is disposed on the sea floor S and whose upper end is disposed above the sea level W; A connecting member (12) connecting a plurality of jacket legs; A plurality of brackets 13 welded to the upper end of the jacket leg 11; A slab 14 welded to the upper end of the bracket 13; And a pile 15 which is inserted through the jacket legs 11 and is installed deeply in the rock.

In the process of constructing such a marine jacket structure, a marine jacket structure is transferred to and placed on a construction site by using a marine crane and a barge, and then the marine jacket structure is placed on a jacket leg using a barge, A hole was drilled and grouted in the steel pipe using a barge equipped with a perforator and a concrete injector to install the pile and the slab was fixed to the top of the jacket leg using a crane.

Particularly, in the construction of the conventional marine jacket structure, the RCD file construction requires a complicated process because it requires a process such as steel pipe hitching, piercing the steel pipe, and injecting concrete into the steel pipe.

Conventionally, all RCD file constructions are done in the sea, so 1) Construction work should be completed within the lease period of marine equipments, but it is difficult to secure the number of days available for marine work due to sea conditions such as waves, rain, 2) marine heavy equipment such as large marine cranes, large barges, and hovercrafts are inadequate to meet the demand due to insufficient supply compared to demand; and 3) as the utilization rate of expensive marine equipment increases, There is a problem that the construction cost increases.

In particular, the number of days available for marine work is only 5 days in the winter and 12 days in the summer.

Patent No. 10-1275500 'Breakwater using jacket structure' (2013.06.20)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve such conventional problems, and it is an object of the present invention to shorten the air by installing the pile regardless of the marine climate conditions using the land equipment at the upper part of the jacket, To minimize the construction cost, and to provide a method for constructing a marine jacket structure using the same.

This object is achieved according to the present invention by providing a temporary top plate for a marine jacket structure arranged on the top side of a jacket so that a pile can be placed on the legs of the jacket using land equipment, And a bottom surface is formed on an upper portion of the jacket, and an opening is formed at a position corresponding to the leg, so that the upper surface of the jacket is detachably installed on the upper portion of the jacket.

The bracket is fixed to the upper end of the leg. The plate has a bottom surface formed on the upper surface of the jacket. The bracket has a lattice-like structure between the plate and the bracket. It is preferable to include a reinforcing beam.

A method of constructing a marine jacket structure using a temporary top plate, comprising the steps of: fabricating a jacket and a temporary top plate on land; transporting the jacket and the temporary top plate to a maritime installation location; A step of mounting a jacket on a sea floor so that an upper end of the jacket is supported on the sea floor and an upper end of the jacket is exposed on the sea floor, a step of installing a temporary upper plate on the upper part of the jacket, ; And a file installation step of inserting a file into the leg using an overhead crane at the top of the hypothetical upper plate and then fixing the lower end of the file to the submarine rock layer by hammering the upper end of the file using the hammering hammer The present invention is also achieved by a method of constructing a marine jacket structure using a hypothetical plate.

The method may further include dismounting the temporary upper plate provided on the upper portion of the jacket after the file installation is completed, and installing the upper structure supported by the file on the upper portion of the jacket.

Further, it is preferable to further include a step of piercing the inside of the steel pipe at an upper portion of the jacket after the installation of the pile, and then injecting the filler into the steel pipe.

In addition, the step of installing the upper structure may include a step of installing a deck on the upper part of the file, and a step of forming a concrete slab on the upper part of the deck.

The forming of the concrete slab preferably includes the steps of placing reinforcing bars on top of the deck, and placing concrete on top of the deck.

According to the present invention, the provision of the temporary top plate on the upper part of the jacket and the construction of the RCD file using the land equipment at the upper part of the temporary top plate can minimize the influence of the marine climatic condition, There is provided a temporary top plate for a marine jacket structure and a method for constructing a marine jacket structure using the same, which can reduce the construction cost by minimizing the use of marine equipment.

Fig. 1 schematically shows the inner wall of a conventional structure, Fig.
2 is a cross-sectional view schematically showing a marine jacket structure according to the prior art,
3 is an exploded perspective view of a temporary top plate for a marine jacket structure according to the present invention,
4 is a cross-sectional view of a temporary top plate for a marine jacket structure of the present invention,
FIG. 5 is a flow chart of a method of constructing a marine jacket structure using a temporary plate of the present invention,
FIGS. 6 to 11 schematically illustrate a construction process according to a method of constructing a marine jacket structure using the false roof of the present invention.

Prior to the description, components having the same configuration are denoted by the same reference numerals as those in the first embodiment. In other embodiments, configurations different from those of the first embodiment will be described do.

Hereinafter, a marine jacket 110 structure according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is an exploded perspective view of a temporary upper plate 120 for installing a marine jacket 110 of the present invention, and FIG. 4 is a sectional view of a temporary upper plate 120 for installing a marine jacket 110 of the present invention.

The marine jacket 110 structure as shown in the figure is a bridging structure for a docking facility of a port. The marine jacket structure includes a jacket 110 that is seated on the seabed surface, a file 130 for fixing the jacket 110 to a submarine rock layer And an upper structure 140 installed at an upper portion of the jacket 110. [

The jacket 110 includes a plurality of legs 111 disposed in a vertical direction and spaced apart from each other and a plurality of horizontal members 112 and diagonal members 113 connecting the plurality of legs 111 .

The file 130 is constructed through an RCR (Reverse Criculation Drill) method and includes a steel pipe 131 inserted into the leg 111 of the jacket 110 and inserted into the rock floor of the seabed, And a filling material 132 to be filled.

The upper structure 140 is installed on the upper part of the jacket 110 and constitutes an upper plate for the structure of the jacket 110. An upper part of the upper structure 140 is provided with an accommodating part (not shown) And a concrete slab 142 disposed in a receiving portion of the deck 141. The deck 141 is fixed to the deck 141,

Particularly, according to the present invention, a temporary upper plate 120 for installing the pile 130 is temporarily installed on the upper part of the jacket 110, and on the upper side of the temporary upper plate 120, a land crane GC, Land equipment, such as a hammer (H), a Cramshell, a filler injector, a welder, a generator, etc., is arranged. In other words, it is possible to construct the file (130) according to the RCD method by using the land equipment in the sea, thereby reducing the influence of the marine climate and shortening the air and minimizing the utilization rate of the expensive marine equipments. .

The temporary upper plate 120 is detachably assembled to the upper portion of the jacket 110 and includes a bracket 121 fixed to the upper end of the leg 111 and a bracket 121 disposed on the upper portion of the jacket 110, A reinforcing beam 122 fixedly supported on the bracket 121 and a plate 123 disposed on the upper side of the reinforcing beam 122 and constituting an upper plate. An opening 123a for inserting the pile 130 is formed in the plate 123 at a position corresponding to the leg 111 of the jacket 110. The plate 123 can sufficiently bear the load of the heavy equipment So that it is formed in the form of a laminar board.

Hereinafter, a method of constructing the above-described marine jacket 110 will be described.

FIG. 5 is a process flow chart of a method of constructing a marine jacket 110 using the present invention temporary roof 120. FIGS. 6 to 11 are views showing the construction of a marine jacket 110 using the present invention temporary roof 120. FIG. The construction process according to the method is schematically shown.

5, a method of constructing a marine jacket 110 using the temporary fixing plate 120 according to the present invention includes a step S110 of manufacturing a temporary fixing plate 120, a step of fixing a jacket 110 (S130) installing a temporary upper plate 120 on the jacket 110, placing a device 130 for constructing a file 130 on the temporary upper plate 120 (S140), installing a temporary upper plate 120 (S160) of installing the upper structure (140) on the jacket (110), and a step (S170) of installing the upper structure (140) on the jacket .

In step S110 of fabricating the temporary upper plate 120, the design and stability of the temporary upper plate 120 are checked corresponding to the jacket 110 and the bracket 121, which is a component of the temporary upper plate 120, The reinforcing beam 122, and the plate 123, respectively.

Subsequently, as shown in FIG. 6, the jacket 110 and the temporary upper plate 120 are moved to the installation position in the sea using the barge line MB and the floating crane MC, and then the floating crane MC is used And the jacket 110 is placed at the installation position (S120). At this time, the lower end of the leg 111 of the jacket 110 is disposed on the sea floor, and the upper end of the leg 111 is exposed above the sea surface.

After the jacket 110 is seated on the seabed surface, a temporary top plate 120 is installed on the jacket 110 (S130). The installation process of the temporary upper plate 120 is performed by attaching a bracket (not shown) to the upper end of the leg 111 of the jacket 110 by using a land crane GC which is disposed in advance on the marine crane MC or the barge line MB, A reinforcing beam 122 is arranged on the upper side of the bracket 121 in the form of a horizontal and vertical lattice as shown in FIG. 8 (S132), and the reinforcing beam 122 is placed on the upper side of the reinforcing beam 122 And installing the plate 123 (S133).

At this time, in the process of fixing the plate 123, the opening 123a formed in the plate 123 is disposed at a position corresponding to the leg 111 of the jacket 110, and the steel pipe 131 is inserted through the opening 123a So that it can be inserted.

After the assembling of the temporary upper plate 120 is completed on the upper part of the jacket 110 as described above, a land crane GC, a hammer H for hunting, a Cramshell, a filling material injector, The land equipment for constructing the RCD file 130 is arranged (S140). On the other hand, the land equipment can move directly from the port to the upper side of the temporary upper plate 120 when the temporary upper plate 120 of the marine jacket 110 structure is connected to the port, and the marine jacket 110 structure It is possible to transport land equipment to the barge when it is located away from the harbor.

When the land equipment for constructing the file 130 is disposed on the upper portion of the hypothetical upper plate 120 as described above, the RCD file 130 is constructed on the hypothetical upper plate 120 using the land equipment as shown in FIG. can do. That is, the steel pipe 131 is inserted into the leg 111 of the jacket 110 by using the land crane GC, and the steel pipe 131 is pushed into the submarine rock layer using the hammer H for hammering (S151 So that the steel pipe 131 is securely fixed to the seabed.

When the hitting of the steel pipe 131 is completed, the inside of the steel pipe 131 is punctured (S152) by using a perforator, and a filling material 132 such as concrete is injected into the steel pipe 131 using a filler injector (S153) File 130 is formed.

That is, according to the embodiment of the present invention, the RCD file 130 for fixing the jacket 110 using various land equipment can be constructed on the temporary upper plate 120 installed on the upper part of the jacket 110. 2) It is easy to acquire equipments due to the use of land equipment with sufficient supply, and 3) It is equipped with marine equipments such as large marine cranes, large barges and hovercrafts. It is possible to reduce the construction cost.

After the completion of the construction of the RCD file 130 as described above, the installation of the temporary upper plate 120 from the upper part of the jacket 110 is performed in the reverse order of installation of the temporary upper plate 120 by using a floating crane (MC) The upper structure 140 supported by the pile 130 is installed on the upper side of the jacket 110 as shown in Fig. 11 (S170). That is, the deck 141 is fixedly installed (S171) on the upper part of the jacket 110 where the temporary upper plate 120 is disassembled, the reinforcing bars are placed on the upper part of the deck 141 (S172) Thereby forming a concrete slab 142. Since the construction of the upper structure 140 is the same as that of the conventional construction method, a detailed description thereof will be omitted.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

110: jacket, 111: leg, 112: horizontal member, 113: diagonal member,
120: hypothetical upper plate, 121: bracket, 122: reinforcing beam, 123: plate,
123a: opening, 130: file, 131: steel pipe, 132: filling material,
140: superstructure, 141: deck, 142: concrete slab

Claims (7)

A temporary top plate for a marine jacket structure disposed above a jacket so that a pile can be installed on a leg of the jacket using land equipment,
Wherein the temporary top plate is disposed in an upper region of the jacket to form a bottom surface at an upper portion of the jacket and an opening is formed at a position corresponding to the leg so as to be detachably installed at an upper portion of the jacket. Hypothetical top plate. The method according to claim 1,
A bracket fixed to the upper end of the leg, a plate having the opening formed on the plate surface to form a bottom surface on the upper surface of the jacket, and a reinforcement beam disposed in a lattice form between the plate and the bracket, And a lower surface of the lower jacket. A method of constructing a marine jacket structure using a temporary top plate,
Fabricating a jacket and a temporary top plate on land;
Transferring the jacket and the hypothetical top plate to a sea installation position;
Placing the jacket on the underside so that the lower end of the leg is supported by the sea floor and the upper end is exposed above the sea level;
Installing a temporary top plate on top of the jacket;
Disposing a land crane and a hammer for landing on top of the temporary top plate; And
And a file installation step of inserting a file into the leg using an overhead crane at the top of the hypothetical upper plate and then fixing the lower end of the file to the submarine rock layer by hammering the upper end of the file with the hammering hammer A method of constructing a marine jacket structure using a hypothetical top plate. The method of claim 3,
Disassembling the temporary upper plate provided on the upper portion of the jacket after the file installation is completed;
Further comprising installing a top structure supported by the pile on top of the jacket. ≪ RTI ID = 0.0 > 21. < / RTI > 5. The method of claim 4,
The method as claimed in claim 1, further comprising the step of piercing the inside of the steel pipe at the upper portion of the jacket after the installation of the pile and then injecting the filler into the steel pipe. 6. The method of claim 5,
Wherein the step of installing the upper structure comprises the steps of installing a deck on the upper part of the file and forming a concrete slab on the upper part of the deck. The method according to claim 6,
Wherein the step of forming the concrete slab comprises the steps of placing reinforcing bars on top of the deck and placing concrete on top of the deck.

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