KR102048564B1 - Suction foundation using rubber plate and offshare structure using thereof - Google Patents

Abstract

The present invention relates to a suction bucket using a rubber membrane and an offshore structure using the same, and more particularly, to a marine structure such as a suction bucket and a jacket foundation using a rubber membrane using a rubber membrane to add pile construction to improve the holding capacity of the suction bucket foundation. It is about. According to an embodiment of the present invention, since the pile construction is possible after the installation of the suction bucket, the bearing capacity is improved compared to the conventional suction bucket, and thus, even when ground subsidence occurs, vertical effects can be maintained.

Description

Suction bucket using rubber membrane and offshore structure using same {SUCTION FOUNDATION USING RUBBER PLATE AND OFFSHARE STRUCTURE USING THEREOF}

The present invention relates to a suction bucket using a rubber membrane and an offshore structure using the same, and more particularly, to a marine structure such as a suction bucket and a jacket foundation using a rubber membrane using a rubber membrane to add pile construction to improve the holding capacity of the suction bucket foundation. It is about.

The naval seaweed uses a monopile, suction bucket, gravity foundation and jacket foundation. A suction bucket refers to a pile installed by using a pressure difference between the pile and the pile generated by discharging a fluid such as water or air inside the pile to the outside. It is built on the sea floor and is used for anchoring or anchoring offshore fixed and floating structures such as oil drilling platforms, offshore wind power foundations. 1 is a photograph of a conventional suction bucket, Figure 2 is a conceptual view showing a penetration state of the conventional suction bucket in a longitudinal section. As shown in Figures 1 and 2, the shape of the suction bucket has a shape in which the upper end is sealed with an upper plate and the lower end is opened to facilitate the suction pressure. The largest suction buckets ever constructed were 32m in diameter and 37m in length, and were installed on the bottom of the 300m deep seabed to serve as the basis for oil drilling platforms. At this time, the suction bucket may be provided with the discharge port and the injection port on the upper plate or the side of the upper end for the discharge and injection of sea water, it may be provided with a ring in the center or side of the upper end for use as a point of action when drawing.

As shown in FIG. 2, the installation mechanism of the suction bucket 1 is as follows. When the suction bucket 1 is seated on the ground 7, the lower end of the pile penetrates to a predetermined depth of the ground 7 by the pile weight. In this state, the seawater inside the suction bucket 1 is drained to the outside using a drainage device installed at the head of the suction bucket 1. Part of the structure of the suction bucket (1) except for the lower portion of the pile, the flow of sea water is completely blocked, so the drained seawater can be introduced only through the ground (7) of the lower portion of the suction bucket (1). However, since the permeability of the seabed is very low, the drained seawater is prevented from entering and recovering, so that the pressure inside the suction bucket 1 is lower than the pressure outside the suction bucket 1. As a result, a pressure difference between the inside and outside of the suction bucket 1 is generated, which causes the suction bucket 1 to penetrate.

These suction buckets are (1) the installation equipment is simple and is not limited by the depth of water, there is an example installed at a depth of up to 1600m, (2) it can be installed regardless of the size of the suction bucket, the larger the upper plate area, the smaller suction pressure Large pipe input occurs, (3) the installation speed is fast enough to install one unit in several hours, and (4) water can be drawn into the suction bucket to draw at the positive pressure generated. Easy and reusable, and (5) when installed, there is an advantage that the penetration resistance is reduced by the seepage of the bottom layer of the suction bucket bottom.

In addition, the structure using the suction bucket (1) can be implemented regardless of the depth, (2) can be installed in a short period of 1-2 days, and the construction work is excellent, such as large-scale foundation can be installed in the seabed ground (3) The suction bucket is sealed after installation, so the suction pressure is generated inside the suction bucket by drawing, and this suction pressure acts as a resistive force (or seismic force), resulting in stability by ingress. (4) the point where there is no need to improve the ground (especially soft ground in the surface layer and advantageous in the soil layer which is sandy soil in the lower layer), (5) preloading using suction pressure after installation and There is an advantage in that the loading test is possible.

In such a suction bucket, there is a possibility that the suction bucket is eccentric due to the pulling load when the structure is installed. This is because the conventional suction bucket generates a pulling support force corresponding to the pulling load only by the external wall. Once it is eccentric, it is very difficult to solve this problem. If the structure is installed without the shaft being maintained, there will be a problem in the operation of the equipment.

Patent Registration 10-1047092 Patent Registration 10-1044752 Patent 10-1044753

However, such a conventional suction bucket has a problem of settlement of the ground (Seabed) that occurs after the offshore structure is installed. The ground is mainly composed of a clay layer and a sand layer. When the offshore structure is installed, the long term settlement of the ground occurs due to the load of the offshore structure. Sedimentation of the ground can be divided into three stages, which are the first occurrences caused by the discharge of the pore water of the granules due to the settlement and the pore water discharged by the excess pore pressure caused by the load. Differential consolidation settlement, which occurs after the dissipation of excess pore water pressure, can be divided into secondary consolidation settlement caused by creep deformation over a long period of time. If ground infringement occurs after the construction of the suction bucket, the verticality of the suction bucket and the offshore structure installed in the suction bucket may be changed.

In order to prevent such settlement, a pre-loading method for improving the ground may be used. The preloading method is a method of preloading a cushion load that is greater than or equal to the load of the planned offshore structure on the ground, and induces the necessary settlement before the installation of the offshore structure.

However, after the penetration of the suction bucket is completed and the top plate comes into contact with the sea floor, it is difficult to discharge the water. If the suction is continued, a large amount of soil may leak, causing damage to the suction pump and the ground. Therefore, since the suction pressure is difficult to apply after the penetration of the suction bucket is completed, there is a problem that it is difficult to load the suction pressure more than the suction pressure required for the penetration, and the suction bucket has not been markedly suitable for such a method.

In order to solve this problem, the following prior literature has been disclosed, but still has not completely solved the problem.

In Japanese Patent Laid-Open No. 11-15889, a method for preventing the elevation of the internal ground in the suction bucket is provided in which a piston (pressing plate) penetrating the suction bucket up and down is used to press-in the inner ground using the weight of the pressing plate. It discloses a technique for preventing the elevation of the internal ground when installing the suction bucket in a manner. This is because suction is no longer possible when the internal ground of the suction bucket is raised and the inlet of the suction pump is blocked. However, the suction bucket of Japanese Unexamined Patent Application Publication No. 11-15889 is for preventing the internal ground from being raised by the seepage of the internal ground and the lack of the support capacity of the suction bucket, and preloading to prevent ground subsidence. There is no purpose to do this. In addition, since the piston of Japanese Patent Application Laid-Open No. 11-15889 is connected to the outer upper portion of the suction bucket, there is a problem that a number of installation constraints such as connecting and fastening the structure to the upper portion occur, which causes preloading to the suction bucket. It is difficult to use for the purpose of applying

Japanese Laid-Open Patent Publication No. 2005-256603 is to prevent the settlement of the seabed ground which occurs after completion of the offshore structure in the suction bucket, and has a plurality of catchments at the end of the skirt of the suction bucket. Disclosed is a technique for pre-draining the water discharge in the existing aquifer. However, due to the fact that a significant tip resistance is applied at the end of the skirt, it is expected that the ground is strongly compressed so that the catchment is broken or it is difficult to suck water, and there is a possibility that the soil is leaked out and aspirated together. There is a problem that is difficult to be.

Accordingly, the present invention has been devised to remedy the problems presented above.

An object of the present invention is configured to enable the construction of the pile after the penetration of the suction bucket is completed, the suction using a rubber membrane that is easy to maintain the vertical degree even when ground subsidence occurs in a simpler configuration than conventional To provide buckets and offshore structures.

Hereinafter, specific means for achieving the object of the present invention will be described.

An object of the present invention, the upper portion is closed in the upper plate and the lower portion is composed of a hollow columnar shape, the pillar surface is composed of a skirt portion that is introduced into the seabed ground; A pile hole provided at one side of the upper plate and penetrating the upper plate to allow a pile to penetrate; And a rubber membrane configured to shield the pile hole, the rubber membrane configured to seal the inside of the main body, wherein the rubber membrane enables suction in the space between the skirt portion and the upper plate. It can be achieved by providing a suction bucket using a rubber film, which is broken when the rubber film is inserted.

In addition, a water channel configured to move through the top plate seawater; And a shielding portion configured to shield or open the waterway by sliding movement and configured on at least one side of the rubber film, wherein the waterway is opened by the shielding portion when the rubber film is vertically loaded. The channel may be shielded by the shield when the rubber membrane is subjected to a vertical downward load.

Another object of the present invention, the suction bucket according to claim 1, which is grounded at a specific installation location on the sea floor, suctions and introduces seawater therein; A pile constructed by injecting the suction bucket into the pile hole, which is one component of the suction bucket, while destroying the rubber membrane as one component of the suction bucket; It can be achieved by providing an offshore structure, including; a structure installed on the upper plate which is one component of the suction bucket.

As described above, the present invention has the following effects.

First, according to an embodiment of the present invention, since the pile construction is possible after the installation of the suction bucket, the bearing capacity is improved compared to the existing suction bucket, so that even when ground subsidence occurs, the verticality can be maintained. .

Second, according to an embodiment of the present invention can be lifted and constructed in the form of a closed and the same as the conventional suction bucket, while maintaining the advantages of the suction bucket, the effect of maintaining the bearing capacity and verticality due to pile construction The effect is generated.

Third, according to one embodiment of the present invention, since it is possible to perform the construction of the pile in the center of the suction bucket upper plate, there is an effect that the number of piles for the effect of maintaining the verticality is significantly reduced. As a result, the economic pile construction becomes possible.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be interpreted.
1 is a photograph of a conventional suction bucket,
2 is a conceptual view showing a penetration state of a conventional suction bucket in a longitudinal section,
3 is a perspective view of a suction bucket using a rubber film according to an embodiment of the present invention,
4, 5 is a cross-sectional view showing a coupling structure of the rubber membrane and the upper plate according to an embodiment of the present invention,
6 illustrates a rubber membrane coupling part according to a first modification of the present invention;
7, 8, 9, and 10 show a schematic view of the rubber membrane coupling portion according to the second modification of the present invention,
Figure 11 illustrates a construction method of a suction bucket using a rubber film according to an embodiment of the present invention,
12 is a schematic diagram showing S10 according to an embodiment of the present invention;
13 is a schematic diagram showing S11, S12 according to an embodiment of the present invention;
14 is a schematic diagram showing S13 according to an embodiment of the present invention;
15 and 16 are a perspective view and a cross-sectional schematic diagram showing a suction bucket using a rubber film according to a modification of the present invention,
17 is a perspective view of a suction bucket using an inner partition wall according to an embodiment of the present invention;
18 and 19 is a schematic diagram showing a suction bucket using an inner partition according to a modification of the present invention,
20 is a view illustrating a construction method of a suction bucket using an inner partition wall according to an embodiment of the present invention;
21 is a schematic diagram showing S20 according to an embodiment of the present invention;
22 is a schematic diagram showing S21, S22 according to an embodiment of the present invention;
23 is a schematic diagram showing S13 according to an embodiment of the present invention;
24 and 25 are a perspective view and a cross-sectional schematic diagram showing a suction bucket using the inner partition according to a modification of the present invention,
26 to 31 are schematic views illustrating a combination of a suction bucket using a rubber membrane and a suction bucket using an inner partition and a marine structure using the jacket structure as an example.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing in detail the principle of operation of the preferred embodiment of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used for parts having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected with another element in between. In addition, the inclusion of any component does not exclude other components unless specifically stated otherwise, it means that may further include other components.

Rubber film  Used Suction Bucket

With respect to the suction bucket using a rubber film, Figure 3 is a perspective view of the suction bucket 1 using a rubber film according to an embodiment of the present invention. As shown in FIG. 3, the suction bucket 1 using the rubber membrane according to an embodiment of the present invention includes an upper plate 10, a skirt portion 11, a pile hole 12, and a rubber membrane 13. can do.

The top plate 10 is configured to close the upper portion of the suction bucket 1 using a rubber film according to an embodiment of the present invention, as in the conventional suction bucket. The upper plate 10 may be configured in various forms such as a plate shape and a dome shape. One side of the upper plate 10 may be provided with a pile hole 12 that is a hole (hole) for the pile is occupied by occupying a portion of the upper plate 10, the pile hole 12 is a rubber film 13 Can be shielded.

Like the conventional suction bucket, the skirt portion 11 is provided at the lower portion of the suction bucket 1 using a rubber film according to an embodiment of the present invention. An upper plate 10 is provided at an upper portion of the skirt portion 11, and the skirt portion 11 may be configured in the form of a cylinder with an open lower portion.

In addition, in order to perform the purpose and function of a conventional suction bucket, the outlet and the inlet can be provided on the top plate or side for discharge and injection of sea water, and a ring for use as a function point at the time of drawing is to be provided at the center or side of the top plate Can be.

The pile hole 12 may mean a hole occupying a part of the upper plate 10 at one side of the upper plate 10. The pile hole 12 is configured to be wider than the pile to enable the construction of the pile after the suction bucket 1 using the rubber membrane is constructed. The pile hole 12 is shielded by the rubber film 13.

The rubber membrane (Diaphragm closure) 13 is made of a rubber material to seal the pile hole 12, and shields the unshielded space in the upper plate 10 of the suction bucket 1 using the rubber membrane by the pile hole 12 It is a structure to make it. The rubber film 13 may be made of a rubber material film composed of a special mixture, and the thickness and the material may be adjusted according to the load conditions.

4 and 5 are cross-sectional views showing a coupling structure of the rubber membrane 13 and the upper plate 10 according to an embodiment of the present invention. 4 shows the outer rubber membrane coupling portion 130 in the form of an outer ring, and FIG. 5 shows the inner rubber membrane coupling portion 132 in the form of an inner ring. As shown in FIGS. 4 and 5, the rubber film 13 is fixed between the pile hole 12 of the upper plate 10 and the jacket leg 30 which is one of the examples of the marine structure connected to the suction bucket. Can be. In the outer rubber membrane coupling portion 130 and the inner rubber membrane coupling portion 132, the coupling between the pile hole 12 and the jacket leg 30 may be a general coupling method such as a bolt-nut coupling 131.

Regarding the modification of the rubber membrane 13, according to the first modification of the present invention, the rubber membrane 13 may open and close the rubber membrane 13 by connecting wires in a lifting line or barge of the suction bucket 1. It can be configured to be. 6 illustrates a rubber membrane coupling part according to a first modification of the present invention. As shown in FIG. 6, the rubber membrane 13 according to the first modification of the present invention is configured such that one end is fixed to the opening / closing wire 16 and the other end is fixed to the pile hole 12 of the upper plate 10. The rubber membrane 13 may be opened or closed by rotating the opening / closing wire 16 to one side by sliding the opening / closing wire 16 to one side. When the rubber membrane 13 is configured to be opened and closed according to the first modification of the present invention, when the suction bucket 1 is bottomed on the sea bottom and when the suction bucket 1 is drawn off and lifted to the sea, the opening and closing By folding the rubber film 13 with the wire 16 to open the pile hole 12, an effect of reducing the frictional force in the water is generated.

Regarding the modification of the rubber film 13, according to the second modification of the present invention, the rubber film 13 is formed by the upper plate 10 when the load in the seabed direction (vertical downward) is applied to the rubber film 13. The pile hole 12 may be sealed, and the pile hole 12 of the upper plate 10 may be opened when a load in the sea direction (vertical upward) acts on the rubber film 13. 7, 8, 9, and 10 show schematic diagrams of rubber membrane joints according to the second modification of the present invention (arrows indicate the direction of seawater). 7, 8, 9, and 10, the rubber membrane coupling portion 132 according to the second modification of the present invention may further include a sliding opening and closing portion. The sliding opening and closing part according to the second modification of the present invention may include a shielding part 136 configured at an end of the rubber film 13 to slide in the sliding part 134 and to open or shield the waterway 135. Can be. In addition, the shield 136 may include a sliding part 134 configured to move up and down and include an open position 1341 at the upper side and a shield position 1342 at the lower side. In addition, when the shield 136 is located at the upper open position 1341, the shield is opened, and when the shield 136 is located at the lower shielded position 1342, the shield 136 is shielded. It may include a channel 135. In FIG. 7, the load in the sea direction acts on the rubber film 13, and the channel 135 of the upper plate 10 is open. In a state as shown in FIG. 7, the suction bucket 1 may descend quickly and land on the sea floor. In FIG. 8, a load in the seabed direction acts on the rubber film 13, so that the channel 135 of the upper plate 10 is shielded. In the state as shown in FIG. 8, since the suction bucket 1 is sealed inside, the suction load may be applied to the suction bucket 1. 9 and 10 show that the shape of the water channel 135 is configured by a straight line passing through the top plate 10. 9 and 10, the lowering speed of the suction bucket 1 may be increased, and the center holding may be better during the lowering of the suction bucket 1.

Regarding the modification of the rubber film 13, according to the second modification of the present invention, the rubber film 13 may be configured with an elastic limit greater than the suction load and smaller than the pile load. According to this, when the rubber membrane 13 receives a load below the elastic limit when the suction load is applied, it is possible to maintain elasticity. After firing it is destroyed. When the rubber membrane 13 exceeds the elastic limit when subjected to the suction load, the rubber membrane 13 may be permanently deformed by the plastic property, thus causing difficulty in providing the suction load again. Therefore, when the elastic limit of the rubber film 13 is configured to be larger than the suction load, the suction load can be applied again to correct the landing depth of the suction bucket 1 or to adjust the verticality.

Rubber film  Used Of suction bucket  Construction method

Regarding the construction method of the suction bucket using a rubber film, Figure 11 shows a construction method of the suction bucket using a rubber film according to an embodiment of the present invention. As shown in FIG. 11, the suction bucket landing step (S10), the suction bucket internal draining step (S11), the suction bucket penetration completion step (S12), and pass through the rubber membrane may include a pile construction step (S13).

The suction bucket landing step (S10) is a step of positioning the suction bucket 1 using a rubber membrane or the suction structure coupled to the suction bucket at the bottom at a construction position, and then landing the suction bucket at the construction position. According to an embodiment of the present invention, in the positioning process of the suction bucket, the top plate 10 and the rubber membrane 13 support the weight of the offshore structure by buoyancy using buoyancy. 12 is a schematic diagram showing S10 according to an embodiment of the present invention. As shown in FIG. 12, S10 may refer to a step of partially intruding into the ground by the weight of the suction bucket 1 using the rubber membrane.

The suction bucket internal draining step (S11) is a step of draining seawater existing in the suction bucket 1 using a rubber membrane to the outside. Through S11 it is possible to perform the vertical control of the offshore structure.

Suction bucket penetration completion step (S12) is a step in which the suction bucket (1) using the rubber film is completed penetration into the ground. 13 is a schematic diagram showing S11, S12 according to an embodiment of the present invention. As shown in Figure 13, S11, S12 is drained by the seawater existing in the drain by the drainage device 14, and is introduced into the ground by the pressure difference between the outside and the suction bucket. According to an embodiment of the present invention, the rubber film 13 shields the inside of the suction bucket despite the pile hole 12 in the suction bucket.

The pile construction step (S13) through the rubber membrane is a step to perform the pile construction through the pile hole (12). Pile construction in S13 is also possible to pile driving method, it is also possible to use a hydraulic jack. In S13, the rubber membrane 13 is broken by the pile, and the pile is constructed on the ground while penetrating the rubber membrane 13. According to one embodiment of the invention by S13 is to increase the bearing capacity of the offshore structure. 14 is a schematic diagram showing S13 according to an embodiment of the present invention. As shown in FIG. 14, while the pile is installed through the pile hole 12 in the suction bucket 1 using the rubber membrane according to an embodiment of the present invention, the rubber membrane 13 is destroyed by the pile, and the pile The rubber membrane 13 penetrates the rubber membrane 13 and is constructed on the ground.

15 and 16 are a perspective view and a cross-sectional schematic diagram showing a suction bucket 1 using a rubber film according to a modification of the present invention. As illustrated in FIGS. 15 and 16, the rubber membrane 13 and the pile hole 12 may have various shapes such as an ellipse shape, and may be positioned off the center of the suction bucket. That is, the scope of the present invention is not limited to the drawings, and may include all forms in which a file can be constructed while using effects of a general suction bucket.

With internal bulkhead Suction Bucket

Regarding the suction bucket using the inner partition, FIG. 17 is a perspective view of the suction bucket 2 using the inner partition according to an embodiment of the present invention. As shown in FIG. 17, the suction bucket 2 using the inner partition wall according to the embodiment of the present invention includes a top plate 10, a skirt portion 11, a pile hole 12, and an inner partition wall 15. It may include.

Top plate 10 is configured to close the upper portion of the suction bucket (2) using the inner partition in accordance with an embodiment of the present invention, like a conventional suction bucket. The upper plate 10 may be configured in various forms such as a plate shape and a dome shape. One side of the upper plate 10 may be provided with a pile hole 12 which is a hole (hole) for the pile to occupy a portion of the upper plate 10, the pile hole 12 is connected to the inner partition wall 15 Thus, the internal space of the suction bucket can be divided.

Like the conventional suction bucket, the skirt portion 11 is provided in the lower portion of the suction bucket 2 using the inner partition wall according to an embodiment of the present invention. An upper plate 10 is provided at an upper portion of the skirt portion 11, and the skirt portion 11 may be configured in the form of a cylinder with an open lower portion.

In addition, in order to perform the purpose and function of a conventional suction bucket, the outlet and the inlet can be provided on the top plate or side for discharge and injection of sea water, and a ring for use as a function point at the time of drawing is to be provided at the center or side of the top plate. Can be.

The pile hole 12 may mean a hole occupying a part of the upper plate 10 at one side of the upper plate 10. The pile hole 12 is configured to be wider than the pile to enable the construction of the pile after the suction bucket 2 using the inner partition wall is constructed. The pile hole 12 is separated from the inside of the suction bucket by the inner partition 15. That is, in the seawater drainage step inside the suction bucket, the suction pressure is generated in the shielded state separated from the pile hole 12 by the internal partition wall 15.

The inner partition wall 15 is a cylinder configured to extend inside the suction bucket 2 using the inner partition wall in the pile hole 12. The interior of the pile hole 12 and the suction bucket are separated by the inner partition 15. According to the inner partition wall 15 and the pile hole 12, even if the pile is installed in the pile hole 12, the inside of the suction bucket is sealed to maintain the suction pressure. In addition, when the suction bucket is lowered to the sea floor, the area of the upper plate subjected to seawater resistance by the inner partition 15 and the pile hole 12 is reduced, so that the lowering speed is improved and the vertical error is reduced. do.

Regarding the modification of the inner partition 15, Figures 18 and 19 are schematic diagrams showing a suction bucket using the inner partition according to a modification of the present invention. 18 and 19, according to a modification of the present invention, the suction bucket 2 using the internal partition wall according to the embodiment of the present invention is located on one side of the inner partition wall 15 together with the inner partition wall 15. A water channel 151 configured to allow seawater to penetrate the inner partition wall 15, and configured to slide up and down at an inner side or an outer side of the inner partition wall 15, and open and close the channel 151 according to sliding. It may further include a sliding shield 152 configured to be. According to the suction bucket 2 using the inner partition according to the modification of the present invention, as shown in FIG. 18, when the suction bucket 2 is lowered, the sliding shield 152 is internally partitioned due to its own weight. It is located in the lower (open position, 1521) and the water channel 151 is open so that the seawater can penetrate the upper plate 10 of the suction bucket (2) (arrow is the direction of the sea water). In addition, as shown in FIG. 19, when the suction bucket 2 lands on the sea bottom, the sliding shield 152 comes into contact with the sea bottom while the upper portion of the inner partition 15 is opened by the load of the suction bucket 2 (shielding position). 1522, the channel 151 is shielded so that seawater cannot penetrate the upper plate 10 of the suction bucket 2, and the suction load can be applied.

With internal bulkhead Of suction bucket  Construction method

Regarding the construction method of the suction bucket using the internal partition wall, Figure 20 shows a construction method of the suction bucket using the internal partition wall according to an embodiment of the present invention. As shown in FIG. 20, the suction bucket landing step (S20), the suction bucket internal draining step (S21), the suction bucket penetration completion step (S22), and penetrate the inner partition wall may include a pile construction step (S23). .

Suction bucket landing step (S20) is a step of positioning the suction bucket (2) using the inner partition wall or the marine structure combined with the suction bucket at the bottom at the construction position, and landing the suction bucket at the construction position. According to an embodiment of the present invention, in the positioning process of the suction bucket, the top plate 10 and the inner partition wall 15 support the weight of the offshore structure by buoyancy using buoyancy. 21 is a schematic diagram showing S20 according to an embodiment of the present invention. As shown in FIG. 21, S20 may refer to a step of partially intruding into the ground by the weight of the suction bucket 2 using the inner partition wall.

The suction bucket internal draining step (S21) is a step of suctioning and draining seawater existing in the suction bucket 2 using the internal partition wall to the outside. Through S21 it is possible to perform the vertical control of the offshore structure.

Suction bucket penetration completion step (S22) is a step in which the suction bucket (2) using the internal partition wall is completed penetration into the ground. 22 is a schematic diagram showing S21, S22 according to an embodiment of the present invention. As shown in FIG. 22, S21 and S22 are suctioned to the outside by the drainage device 14 and drained to the outside, and are introduced into the ground by the pressure difference between the outside and the suction bucket. According to one embodiment of the present invention, despite the pile hole 12 in the suction bucket, the inner partition 15 shields the inside of the suction bucket.

The pile construction step S23 penetrates through the inner partition wall, and the pile construction is performed through the pile hole 12. Pile construction in S23 can also be a pile driving method, a method using a hydraulic jack is also possible. In S23, the inner partition 15 is configured to seal the inside of the suction bucket, and the pile is constructed on the ground while penetrating the inner partition 15. According to an embodiment of the present invention, the bearing capacity of the offshore structure is increased by S23. 23 is a schematic diagram showing S13 according to an embodiment of the present invention. As shown in Figure 23, while the pile is installed in the suction bucket (2) using the inner partition wall according to an embodiment of the present invention through the pile hole 12, and the inside of the suction bucket by the inner partition wall 15 It is constructed on the ground while penetrating the inside of the separated inner partition.

24 and 25 are a perspective view and a cross-sectional schematic diagram showing a suction bucket (2) using an internal partition wall according to a modification of the present invention. As illustrated in FIGS. 24 and 25, the cross-sectional shape of the inner partition wall 15 and the pile hole 12 may be various shapes such as an ellipse shape, and may be positioned off the center of the suction bucket. That is, the scope of the present invention is not limited to the drawings, and may include all forms in which a file can be constructed while using effects of a general suction bucket.

Maritime structures

In relation to the marine structure, in FIGS. 26 to 31, the jacket structure 31 is taken as an example, and the suction bucket 1 using the rubber membrane and the suction bucket 2 using the inner partition wall and the marine structure according to an embodiment of the present invention. Explain the coupling.

26 is a schematic diagram showing a jacket structure using a suction bucket according to an embodiment of the present invention. As shown in FIG. 26, the jacket structure 31 using the suction bucket according to the exemplary embodiment of the present invention includes a suction bucket 1 using a rubber membrane or a suction bucket using an inner partition wall at the bottom of the jacket leg 30. (2) can be configured.

27 is a schematic diagram showing that the pile is constructed in the jacket structure using the suction bucket according to an embodiment of the present invention. As shown in FIG. 27, in the jacket structure 31 using the suction bucket according to an embodiment of the present invention, the pile 20 may be constructed on the ground through the jacket leg 30 and the suction bucket. At this time, it is possible to drive construction using a hammer or construction using a hydraulic jack.

28 and 29 are enlarged views of a suction bucket in a jacket structure using a suction bucket using a rubber film according to an embodiment of the present invention. As illustrated in FIGS. 28 and 29, the jacket leg 30 and the top plate 10 may be connected to each other, and a rubber membrane 13 is formed at the connection portion between the jacket leg 30 and the top plate 10 to use a rubber membrane. The inside of the bucket 1 can be shielded. In addition, when the pile 20 is inserted, it is introduced into the suction bucket through the pile hole 12 while the rubber is broken as shown in FIG.

30 and 31 are enlarged views of a suction bucket in a jacket structure using a suction bucket using an inner partition according to an embodiment of the present invention. As shown in FIGS. 30 and 31, the jacket leg 30 and the top plate 10 may be connected, and from the connection portion of the jacket leg 30 and the top plate 10 to the inside of the suction bucket through the pile hole 12. The inner partition 15 may be extended to shield the inside of the suction bucket 2 using the inner partition. In addition, when the pile 20 is inserted, it is introduced into the suction bucket through the inside of the pile hole 12 and the inner partition wall 15 as shown in FIG.

The size, location, and arrangement of the suction bucket, rubber membrane, inner partition, pile groove, and the like mentioned above are not limited to the drawings, and according to the material, structure, strength, and type of offshore structure in order to achieve the object of the present invention. Is determined.

As described above, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention.

1: Suction bucket using rubber membrane
2: Suction bucket using internal bulkhead
10: tops
11: skirt part
12: filehole
13: rubber film
14: drainage
15: internal bulkhead
16: open and close wire
20: file
30: jacket leg
31: Jacket Structure
130: outer rubber membrane coupling portion
131: bolt-nut coupling
132: inner rubber membrane joint
134: sliding part
135: channel
136: shield
151: channel
152: sliding shield
1341: open position
1342: shielded position
1521: open position
1522: shielded position

Claims (3)

The upper part is closed by the upper plate and the lower part is configured in the form of a hollow pillar, the pillar surface is composed of a skirt portion that is introduced into the seabed ground;
A pile hole provided at one side of the upper plate and penetrating the upper plate to allow a pile to penetrate;
A rubber membrane configured to shield the pile hole and configured to seal the inside of the main body;
A channel configured to move seawater through the upper plate; And
A shield configured to be shielded or opened by a sliding movement and configured on at least one side of the rubber film;
Including,
When the rubber membrane is subjected to the vertically upward load, the channel is opened by the shielding portion, and when the rubber membrane is subjected to the vertical downward load, the channel is shielded by the shielding portion,
The rubber membrane allows suction in the space between the skirt portion and the top plate, and the rubber membrane breaks when the pile is inserted.
Suction bucket using rubber membrane.
The suction bucket according to claim 1, which is bottomed at a specific installation location on the sea floor and suctions seawater therein;
A pile which is inserted into the suction bucket of the suction bucket and breaks the rubber membrane which is one component of the suction bucket and penetrates into the pile hole which is one component of the suction bucket; And
A structure installed on the upper plate which is one component of the suction bucket;
Including,
Offshore structures.
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