KR20200081143A - Pre-piling template using spudcan and installation method of offshore structure using thereof - Google Patents

Abstract

The present invention relates to a pre-piling template using a spudcan foundation and a marine structure installing method using the same. To this end, the pre-piling template using the spudcan foundation includes: a pile guide for guiding a direction of a pile constructed to penetrate into the seabed ground; a spudcan foundation penetrating into the seabed ground to generate support force; a connecting member in which the spudcan foundation is coupled to and configured in one end and which is configured in parallel with the pile guide; a lifting module configured to receive the connecting member to drive the connecting member so that the connecting member is slid in a direction in parallel with the pile guide; and a frame connecting the pile guide and the lifting module to each other to fix the same.

Description

Pre-piling template using spudcan and installation method of offshore structure using thereof

The present invention relates to a pre-filing template using a spud can base and a method for installing a marine structure using the pre-filing template.

Offshore wind structures, oil or gas production structures, marine science base structures, and support structures for offshore structures such as port structures can be divided into fixed support structures and floating support structures. The floating support structure is not fixed to the ground but is floating in the sea water, and various concepts have been proposed and are in the demonstration stage. In particular, the 2.3MW spa-type floating wind turbine installed on the west coast of Norway at a depth of 220m is the first floating offshore wind power structure currently in operation.

The fixed support structure means a support structure fixed to the seabed to support the offshore structure. For the fixed support structure, a basic structure such as a jacket support structure, monopile, tripod, and tension type is applied. Jacketed support structures have been operating for the longest period of time as a fixed oil and gas mining facility among offshore wind support structures, and are relatively installed at depths between 20m and 50m compared to other support structures. In addition, the jacket type support structure is a support structure of a large wind power generator of 5MW or more or a large offshore wind power generator with a heavy weight, and is the most favored support structure. 1 is an exemplary view showing a structural example of a jacketed support structure. As shown in Fig. 1, the jacketed support structure is generally composed of four legs and a plurality of braces connecting between the legs, and these legs are supported on the ground by piles. It can be configured as possible.

At this time, the jacket support structure is classified into post-piling and pre-piling according to the time of pile construction, and post-piling is carried through the jacket and inserted into the leg of the jacket to drive the pile through driving and excavation. Means a method of construction, the first step of mounting the jacket on the sea floor using a marine crane, the second step of fixing the jacket file to the ground by putting the jacket file inside the leg of the jacket while mounted with the marine crane, The third step of drilling through the jacket file through the inside of the jacket file to the rock using the RCD method, etc., inserting a pin pile and grouting to fix the pin pile, jacket file, leg, and ground It can be constructed through the fourth step.

Pre-filing refers to a method in which piles are installed before the construction of the jacket support structure, and then, through the jacket, is combined, and the first step of performing preparatory work such as flattening work on the bottom surface, placing the template on the bottom surface It can be constructed through the second step of constructing the pile as a guide, and through the third step of joining the pile and the jacket using grouting after mounting the jacket on the completed pile. 2 is a photograph showing an example of a template used in the pre-filing method. As shown in Figure 2, the template is a configuration that performs the guide of pile construction in the pre-filing method. In general, the pre-filing method has a faster overall construction speed and excellent economic efficiency than the post-piling method.

In order to construct the jacket support structure by applying this pre-filing method, the template must be mounted on the sea floor as a guide for controlling the position and verticality of the pile.

Republic of Korea Registered Patent 10-1691968, Spud Can Positioning Device and Method for Offshore Structures, Samsung Heavy Industries Co., Ltd. Republic of Korea Patent Publication No. 10-2016-0035816, the spud can of the jack-up league and ship or marine structures containing the same, Daewoo Shipbuilding & Marine Engineering Co., Ltd.

However, this pre-filing template is a guide for the pile, the lower end of the sleeve is mounted on the bottom surface to support the entire structure, so it is difficult to adjust the level or height of the template in response to the slope or flexion of the bottom surface, and it is supported in the form of a mat base. As a result, there was a problem that the support power was relatively insufficient.

In addition, the support part may be subsided by the weight and external force of the template, and the support part subsidence is fluid due to the ground condition and the external force condition of the seabed, so there is a problem that it is difficult to predict or prepare in advance, and the sleeve itself is supported by the ground. There was a possibility of damage.

In addition, when the amber stone exists on the bottom of the sea or is composed of a gravel layer and a rock layer, there is a problem that the leveling of the template is very difficult.

Therefore, an object of the present invention is to provide a pre-filing template using a spud can base and a method for installing a marine structure using the spud can base to solve the above problems.

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

An object of the present invention, a pile guide for guiding the direction of the pile to be built to penetrate the seabed ground; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; And a frame for interconnecting the pile guide and the connecting member, wherein the spud can base is penetrated into the submarine ground to support the frame, and the pile is piled during pre-piling construction of the pile for installation of offshore structures. Characterized by guiding the construction direction of, it can be achieved by providing a pre-filing template using a spud can base.

Another object of the present invention, a pile guide for guiding the direction of the pile being constructed to penetrate the seabed ground; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; A lifting module configured to receive the connecting member, and driving the connecting member to slide in a direction parallel to the pile guide; And a frame for connecting and connecting the pile guide and the lifting module to each other so that when the spud can base comes into contact with the submarine ground, the connecting member slides downward so that the spud can base penetrates the submarine ground. After controlling the lifting module, it characterized in that it comprises a control means for controlling the upper or lower driving of the connecting member of the lifting module so that the horizontal or height of the frame is adjusted, pre-filing using a spud can base This can be achieved by providing a template.

In addition, the frame has a beam structure of a polygonal shape, and further includes an outer beam constituting the corner of the polygonal shape and an inner beam connecting the vertex and the center point of the polygonal shape, and the lifting module, the connecting member, and the spur The decan base may be configured on one side of the inner beam.

In addition, the upper lead is configured to close the upper end of the pile guide, and to be opened and closed by the control means on the top of the pile guide; A lower lead configured to close the lower end of the pile guide and to be opened and closed by the control means at the lower end of the pile guide; An inlet penetrating through the upper lead or the lower lead so that seawater flows into the inner space of the pile guide; And an opening/closing member configured in the inlet to open and close the inlet formed in the upper lead or the lower lead by the control means, and when the upper lead and the lower lead are closed, the pile guide Buoyancy may be generated by the interior space.

In addition, a spud-can sensor module configured on the spud-can base to generate spud-can tilt information that is tilt information of the spud-can base; And a frame sensor module configured in the frame to generate frame tilt information, which is tilt information of the frame, wherein the control means receives the spud scan tilt information and the frame tilt information, and the spud scan tilt information. And it is possible to determine whether a punch-through (Punch Through) of the spud can is based on the time-series change of the frame tilt information.

In addition, a through hole configured to penetrate the spud can base up and down, the grout outlet configured to remain closed and open when the spud can base is drawn out; It is configured on the top of the spud can base and is configured in the form of a bag for receiving grout therein, and connected to the grout outlet so that the grout flows downwardly along with the opening of the grout outlet. Further comprising; a grout bag that is configured, and when the spud can base is drawn out, the grout outlet may be opened so that the grout accommodated inside the grout bag can be discharged below the spud can base.

Another object of the present invention, a pile guide for guiding the direction of the pile being constructed to penetrate the seabed ground; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; And a frame connecting the pile guide and the connecting member to each other; a pre-filing template descending step of lowering the pre-filing template containing the seabed onto the seabed; A spud can foundation intrusion step of intruding the spud can foundation into the subsea ground; A pile construction step of constructing the pile on the seabed ground by penetrating the pile guide using a pile penetration device after the spud can base of the pre-filing template is penetrated into the seabed ground; A spud can foundation drawing step of drawing the spud can base after the construction of the pile is completed; And a pre-filing template removal step of lifting and removing the pre-filing template after the drawing of the spud can base is completed, and installing a marine structure based on the pre-piled pile after the pre-filing template removing step. Characterized in that, it can be achieved by providing a method for installing a marine structure using a pre-filing template.

Another object of the present invention, a pile guide for guiding the direction of the pile being constructed to penetrate the seabed ground; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; A lifting module configured to receive the connecting member, and driving the connecting member to slide in a direction parallel to the pile guide; And a frame for connecting and connecting the pile guide and the lifting module to each other; a pre-filing template descending step of lowering the pre-filing template on the seabed; A spud-can base penetration step of driving the elevating module after the spud-can base comes into contact with the seabed to infiltrate the spud-can base into the seabed; An adjustment step of adjusting the horizontal or the height of the pre-filing template by controlling the elevating module according to the horizontal slope or height of the pre-filing template after the spud can base is intrusively installed in the subsea ground; After the horizontal or height of the pre-filing template is adjusted, a pile construction step of constructing the pile on the seabed by penetrating the pile guide using a pile penetration device; A spud can foundation drawing step of drawing the spud can base after the construction of the pile is completed; And a pre-filing template removal step of lifting and removing the pre-filing template after the drawing of the spud can base is completed, it can be achieved by providing a method for installing a marine structure using a pre-filing template. .

As described above, according to the present invention, the following effects are obtained.

First, according to an embodiment of the present invention, the template is firmly supported on the seabed ground by a spud can, and an effect of facilitating the extraction of the template occurs after the template is used.

Second, according to an embodiment of the present invention, a horizontal and height adjustment effect is generated to cope with bending of the seabed ground and additional settlement occurring after the initial seating.

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited only to those described in those drawings. And should not be interpreted.
1 is an exemplary view showing a structural example of a jacketed support structure,
Figure 2 is a photograph showing an example of a template used in the pre-filing method,
3 is a plan view showing a pre-filing template using a spud can base according to an embodiment of the present invention,
Figure 4 is a front view showing a pre-filing template using a spud can base according to an embodiment of the present invention,
5 is a flow chart showing a method for installing a marine structure according to an embodiment of the present invention,
6 is a schematic diagram showing a step of descending a pre-filing template according to an embodiment of the present invention,
7 is a schematic diagram showing a step S12 of the spud can base 30 according to an embodiment of the present invention,
8 is a schematic diagram showing a pile construction step (S13) according to an embodiment of the present invention,
9 is a schematic diagram showing a spud can base drawing step (S14) according to an embodiment of the present invention,
10 is a schematic diagram showing a pre-filing template removal step (S15) according to an embodiment of the present invention,
Figure 11 is a flow chart showing the step S11 in the sloped submarine ground according to an embodiment of the present invention,
12 is a schematic view showing a plane of a pre-filing template according to a first modification of the present invention,
13 is a schematic diagram showing a plane of a pre-filing template according to a second modification of the present invention,
14 is a schematic diagram showing the transportation of the pre-filing template 1 according to the third modification of the present invention,
15 is a schematic diagram showing a specific configuration of a pre-filing template 1 according to a third modification of the present invention,
16 is a schematic diagram showing a change in the shear force and the slope of the pre-filing template 1 generated when pile intrusion is constructed according to an embodiment of the present invention,
17 is a schematic diagram showing a spud can base 30 according to a seventh modification of the present invention.

Hereinafter, exemplary embodiments in which a person having ordinary skill in the art to which the present invention pertains may easily implement the present invention will be described in detail with reference to the accompanying drawings. However, in the detailed description of the operation principle for the preferred embodiment of the present invention, when it is determined that the detailed description of the related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description 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 specific part is said to be connected to another part, this includes not only the case of being directly connected, but also the case of being connected indirectly with another element in between. In addition, the inclusion of specific components does not exclude other components unless specifically stated otherwise, and means that other components may be further included.

Pre-filing template using spudcan basis

3 is a plan view showing a pre-filing template using a spud can base according to an embodiment of the present invention, and FIG. 4 is a plan view showing a pre-filing template using a spud can base according to an embodiment of the present invention. It is a front view showing a pre-filing template using a spud can base according to an embodiment. 3 and 4, the pre-filing template 1 using a spud can base according to an embodiment of the present invention includes a frame 10, a pile guide 20, and a spud can base 30 can do.

The frame 10 may be formed of a frame member having two or more parallel beam structures reinforced with a plurality of cross beam members, each plane having a polygonal shape such as a square or a triangle. The specific configuration of the frame 10 has been described as at least two parallel beam structures reinforced with a cross beam member for convenience of description, and the scope of the frame member shape in the present invention is the structure of the frame member of FIGS. 3, 4 or detailed description. It is not limited to. Pile guides 20 serving as a filing guide may be configured at each vertex of the polygonal frame 10 according to an embodiment of the present invention. 3, the polygonal frame 10 may include an outer beam 11 and an inner beam 12, as shown in FIG. 3, and the outer beam 11 is a beam member constituting the outer edge of the polygonal shape. It may mean, the inner beam 12 may mean a beam member constituting the inner reinforcement frame connecting the vertices of the polygonal shape. As illustrated in FIG. 4, the outer beam 11 or the inner beam 12 may be configured with at least two parallel beam 101 structures reinforced with a cross beam member 100.

In addition, the lifting side fixing part 13 for citing a template may be configured at one side of the corner of the frame 10 according to an embodiment of the present invention. The lowering and lifting of the template is performed by the lifting fixing part 13.

In addition, one side of the frame 10 according to an embodiment of the present invention may further include a sensor module 40 that measures the horizontal, angular velocity, acceleration, height or depth of the seabed on the template. The sensor module 40 according to an embodiment of the present invention includes an acceleration sensor and a gyro sensor to generate horizontal information, and includes a geomagnetic sensor, a depth measurement sensor, a sound wave distance sensor, and the like, to compare depth information or submarine ground Height information can be generated. The horizontal information, depth information, or height information generated by the sensor module 40 is transmitted to a control unit on the sea or ground by a communication module connected to the sensor module 40, or the lifting module 33 of the spud can base 30 It can be used for control. In addition, the sensor module 40 may include at least one camera module to generate underwater visual information. This underwater time information may also be transmitted to a control unit on the sea or on the ground by the communication module or may be used to control the elevating module 33 of the spud can base 30.

Pile guide 20, as shown in Figures 3 and 4, may be composed of a hollow cylindrical member with an open top and bottom, the pile is inserted after the pre-filing template 1 is installed to guide the pile penetration direction to be. The pile introduction portion located on the upper portion of the pile guide 20 may have a funnel-shaped sleeve 21 having a diameter larger than the diameter of the pile guide 20 to increase the acceptability of the pile.

The spud can base 30 is composed of a conical shape in which an end portion in contact with the seabed ground is inverted, and penetrated into the seabed ground. According to an embodiment of the present invention, at least one frame 10 is preferably used. Three to four spud can bases 30 may be constructed. The spud can base 30 may be configured to protrude downward from the bottom of the frame 10 and the pile guide 20 to contact the seabed surface, and to adjust the relative distance between the seabed ground and the pre-filing template 1. . In addition, as shown in Figs. 3 and 4, the spud can base 30 may be configured inside the frame 10, or may be configured outside the frame 10. However, differences in effectiveness may occur. When the spud can base 30 is configured in the inner beam 12 of the frame 10, even if a punch through of the specific spud can base 30 occurs, the slope of the pre-filing template 1 is excessive The effect does not change significantly. In addition, when the spud can base 30 is configured in the outer beam 11 of the frame 10, at least two spud can bases 30 are configured to be supported by one pile guide 20, during pile construction. The effect of improving the horizontal support of the pile guide 20 is generated.

Mechanical devices such as motors, electric wires, batteries, hydraulic pumps, hoses, measuring devices, and control devices may be provided to drive the spud can base 30.

The spud can base 30 according to an embodiment of the present invention may be configured to be coupled through the connecting member 32 and the engaging member 31, and the connecting member 32 is elevated on one side of the frame 10 It can be configured to be coupled to the module 33 to be sliding or driven in the vertical direction by the lifting module 33. At this time, the connecting member 32 according to an embodiment of the present invention may be composed of a beam member of a lattice structure (Lattice structure) in which a cross beam reinforcement member is included, or a member of a single beam structure. 3 and 4, the connecting member 32 is represented by a single beam structure member, but the scope of the present invention is not limited thereto. The lifting module 33 may be configured as a structure of hydraulic cylinders having moving and stationary pins, or a structure using a pinion gear.

In addition, in relation to the connection relationship between the spud can base 30 and the frame 10 according to an embodiment of the present invention, the spud can base 30 is a plane of the frame 10 on one side of each inner beam 12 It may be configured to face the vertical direction. Specifically, the inner beam 12 may be configured on one side between the vertex of the frame 10 and the center of the frame 10. According to this, the effect of being able to support the frame 10 by using the minimum number of spud can bases 30 is generated.

According to this, the template is firmly supported on the seabed by the spud can, and an effect of facilitating the drawing of the template is generated after the template is used. In particular, as compared to the case of mounting in the form of a mat base on the surface of the seabed surface, the spud can base 30 penetrates into the seabed base, thereby increasing the supporting force so that the pre-filing template 1 resists external forces and improves guide performance during pile construction. The effect occurs.

In addition, the importance of the leveling operation to be performed before the template is lowered is lowered, and an effect of easily adjusting the horizontal and height to respond to the additional settlement occurring after the initial settling and bending of the seabed is generated. That is, it is possible to adjust the load acting on the height and protrusion amount of each spud can base 30 under irregular and inclined bottom conditions. Accordingly, it is possible to minimize the pre-work, such as the work of choosing the bottom of the sea, it is possible to facilitate the pile construction and improve the construction quality. In addition, an effect that can be omitted or minimized by replacing a separate operating member for adjusting the horizontal and the height of the pre-filing template 1 is generated.

In addition, as compared to the case where the pile guide 20 itself is supported on the ground, according to an embodiment of the present invention, the roles of the pile guide 20 and the spud can base 30 are separated, thereby supporting It can be optimized and simplified, and the effect of improving support and drawability is generated. When the pile guide 20 itself is supported on the ground as in the conventional method, the device may be complicated and the pile guide 20 may be recessed on the ground, which may cause problems when constructing the pile.

In addition, since the length of the connecting member 32 connecting the spud can base 30 and the frame 10 can be set relatively freely, an effect that can increase the vertical operating range of the spud can base 30 is generated. . Accordingly, it is possible to perform an optimal function using the spud can base 30 according to various site ground conditions and work conditions. In addition, after the pile construction work is completed, the spud can base 30 is drawn, the pre-filing template 1 is removed and removed, and an effect of immediately re-using in another location occurs.

How to install offshore structures using pre-filing templates

Regarding a method for installing a marine structure using a pre-filing template, FIG. 5 is a flowchart showing a method for installing a marine structure according to an embodiment of the present invention. As shown in FIG. 5, the method for installing an offshore structure according to an embodiment of the present invention includes a pre-filing template descending step (S10), a spud can base penetration step (S12), a horizontal and height adjustment step (S13), and a pile It may include a construction step (S14), a spud can base drawing step (S15), a pre-filing template removal step (S16).

The pre-filing template lowering step (S10) is a step of fixing the lifting wire to the lifting fixing part 13 and lowering the pre-filing template 1 to the seabed ground using a sea crane or the like. 6 is a schematic diagram showing a step of descending a pre-filing template according to an embodiment of the present invention. As illustrated in FIG. 6, S10 may be configured to fix the lifting wire to the lifting fixture 13 and lower the pre-filing template 1 to the seabed ground using a sea crane or the like.

The spud-can base penetration step (S11) is a step of intruding the spud-can base 30 into the submarine ground by using the lifting module 33 after the spud-can base 30 is in contact with the seabed. 7 is a schematic view showing a step S12 of the spud can base 30 according to an embodiment of the present invention. As shown in FIG. 7, S11 intrudes and installs the spud can base 30 on the seabed using the lifting module 33. At this time, as shown in Figure 7, the through hole by the spud can base 30 is formed on the seabed ground. Through-holes have different back flow degrees, shapes, depths, and diameters depending on the nature of the seabed.

In the horizontal and height adjustment step (S12), after the spud can base 30 is intrusively installed on the subsea ground, it is elevated according to the horizontal slope and height of the pre-filing template sensed by the sensor module 40 for optimization of pile construction. The step of controlling the module 33 to adjust the horizontal and height of the pre-filing template 1.

The pile construction step (S13) is a step of constructing a pile on the seabed by penetrating the pile guide 20 using a pile penetration device such as a hammer after the horizontal and height of the pre-filing template 1 are adjusted. 8 is a schematic diagram showing a pile construction step (S13) according to an embodiment of the present invention. As shown in FIG. 8, the pile is penetrated through the pile guide 20 using a pile intrusion device such as a hammer to construct the pile on the seabed.

The spud can base drawing step S14 is a step of drawing the spud can base 30 after the pile construction is completed. 9 is a schematic diagram showing a spud can base drawing step (S14) according to an embodiment of the present invention. As illustrated in FIG. 9, the elevation module 33 is controlled to draw the spud can base 30 from the seabed.

The pre-filing template removal step (S15) is a step of lifting and removing the pre-filing template using the lifting wire and the lifting fixing part 13 after the drawing of the spud can is completed. 10 is a schematic diagram showing a pre-filing template removal step (S15) according to an embodiment of the present invention. As shown in FIG. 10, the pre-filing template is lifted and removed using the lifting wire and the lifting fixture 13, and only the piles constructed by the pre-filing template exist on the seabed. After step S15, the jacket foundation is installed on the pre-piled pile.

In the sloping seabed, the steps of S11 may proceed as follows. 11 is a flow chart showing the step S11 in the inclined seabed ground according to an embodiment of the present invention. As shown in FIG. 11, when the pre-filing template 1 descends in step S10 and the spud can base 30 at a specific location is first landed on the seabed, the spud can base 30 to S11 landed first. Intrusion into the seabed may be carried out by performing. Subsequently, when the rest of the spud can base 30 is landed on the submarine ground, the subordinate landed bases may also be carried out in step S11 to perform intrusion into the subsea ground.

First variant

In relation to the first modification of the present invention, the frame 10 of the pre-filing template 1 according to the first modification of the present invention is the spud can base 30, the connecting member 32 and the lifting module 33 The inner beam 12 may be designed as two or more parallel beams to stably support. 12 is a schematic view showing a plane of a pre-filing template according to a first modification of the present invention. As shown in FIG. 12, the inner beam 12 may be composed of two or more parallel beams, and a cross beam may be further included to reinforce the inner beam 12.

Second variant

In relation to the second modification of the present invention, the spud can base 30, the connecting member 32 and the lifting module 33 of the pre-filing template 1 according to the second modification of the present invention are the frame 10 It can be configured in the outer beam (11). 13 is a schematic view showing a plane of a pre-filing template according to a second modification of the present invention. As shown in FIG. 13, the spud can base 30, the connecting member 32 and the lifting module 33 may be configured in the outer beam 11 of the frame 10. According to this, since two spud can bases 30 adjacent to one pile guide 20 impart support force, an effect of improving the horizontal support force during pile construction occurs.

Modification 3

In relation to the third modified example of the present invention, the pre-filing template 1 according to the third modified example of the present invention is a top fully automatic opening/closing lid (Lid) that is automatically opened and closed by a control unit at the upper and lower openings of the pile guide 20 ) And the lower fully automatic opening and closing lead. In particular, the lower fully automatic opening and closing lid according to the third modification of the present invention is configured with an inlet opening and closing controlled by a control unit so that seawater can be introduced into the pile guide 20 while the fully automatic opening and closing lid is closed. Can be configured. According to the third modification of the present invention, in the closed state of the fully automatic opening and closing lid, it is possible to transport the pre-filing template 1 to the lifting line using the buoyancy acting on the pile guide 20, and the pile is opened and closed by the inlet opening and closing. By adjusting the buoyancy of the guide 20, the horizontal and the height of the pre-filing template 1 can be adjusted, thereby reducing the role of the marine crane or eliminating the need for the marine crane.

Regarding pile construction using the pre-filing template 1 according to the third modification, FIG. 14 is a schematic diagram showing the transportation of the pre-filing template 1 according to the third modification of the present invention. As shown in FIG. 14, the pre-filing template 1 according to the third modification of the present invention can be transported to the lift by the buoyancy of the pile guide 20.

15 is a schematic diagram showing a specific configuration of a pre-filing template 1 according to a third modification of the present invention. As shown in FIG. 15, in the pre-filing template 1 according to the third modification of the present invention, the top lid 22 is provided at the top of the pile guide 20 and the hinge 24 is placed at one side of the sleeve 21. It can be configured to be connected to rotate in a specific direction. In addition, the lower lead 23 at the bottom of the pile guide 20 may be configured to be connected to be rotatable in a specific direction through the hinge 24. In particular, the upper lead 22 or the lower lead 23 may be configured with an inlet 25 through which seawater flows, and the inlet 25 may be opened and closed by an opening/closing member 26. When the inlet 25 is closed by the opening/closing member 26, seawater does not flow inside the pile guide 20, and when the inlet port 25 is opened by the opening/closing member 26, the seawater of the pile guide 20 It is introduced into the inside and the buoyancy by the pile guide 20 is reduced. After the pre-filing template 1 according to the third modification of the present invention is transported to the pile construction position, the horizontal and height can be adjusted by controlling the opening and closing member 26 of the control unit. In particular, it is possible to adjust the buoyancy of the pile guide 20 so that the bottom of the pile guide 20 does not contact the seabed ground.

When the opening/closing member 26 is opened and seawater flows into the inlet 25, the buoyancy of the pile guide 20 is reduced, so that the pre-filing template 1 descends, and adjusting the level of the pre-filing template 1 In order to determine whether or not the opening and closing member 26 of each pile guide 20 is opened or closed. When a specific water depth is measured in the sensor module 40, the opening/closing member 26 is closed, so that seawater does not flow into the inlet 25. Subsequently, the spud can base 30 descends under the control of the elevating module 33 to be penetrated into the seabed, and each hinge is opened to open both the upper lead 22 and the lower lead 23 of each pile guide 20. After controlling (24), pile construction is performed. After the pile construction is completed, the spud can base 30 is raised by the control of the lifting module 33 to escape from the seabed, and both the upper lead 22 and the lower lead 23 of each pile guide 20 are lifted. After controlling each hinge 24 to be closed, buoyancy is formed by suctioning the seawater existing in the inner space of each pile guide 20. The pre-filing template 1 after pile construction by the pile guide 20 having buoyancy may be configured to be removed.

Modification 4

In relation to the fourth modified example of the present invention, the spud can sensor module that is a sensor module such as an acceleration sensor and a gyro sensor communicating with a control unit may be further configured on the spud can base 30 according to the fourth modified example of the present invention. In addition, the spud can tilt information, which is the tilt information of the spud can base 30, may be generated by the spud can sensor module.

According to the spud can sensor module configured in the spud can base 30 according to the fourth modification of the present invention, the control unit configured in the sea, on the ship, on the ground or in the frame 10, the spud can tilt information and the sensor module 40 It is possible to measure eccentricity information or bending information of the connecting member 32 using the tilt information of the generated frame 10, and the smaller the eccentricity or bending degree of the connecting member 32, the lower the supporting force of the seabed. By judging, the depth of design can be modified more deeply during pile construction. According to this, the effect of being able to perform more effective pile construction by generating precise soil information of the pile construction location by the construction of the spud can base 30 is generated.

Variation 5

In relation to the fifth modification of the present invention, the spud can sensor module, which is a sensor module such as an acceleration sensor and a gyro sensor, communicating with a control unit may be further configured on the spud can base 30 according to the fifth modification of the present invention. In addition, the spud can tilt information, which is the tilt information of the spud can base 30, may be generated by the spud can sensor module.

According to the spud can sensor module configured in the spud can base 30 according to the fifth modification of the present invention, the control unit configured in the sea, on the ship, the ground or the frame 10 in the spud can tilt information and the sensor module 40 It may be configured to determine whether punch-through occurs in a specific spud-can base 30 based on a time-series change in slope information of the generated frame 10. When the stiffness of the seabed ground changes abruptly in the course of intrusion work of the spud can base 30, the spud can base 30 is suddenly lowered to a point having intrusion resistance is referred to as punch through. When a punch-through occurs in one of the plurality of spud can bases 30 configured in the pre-filing template 1, a problem occurs in that the horizontality of the pre-filing template 1 is rapidly changed. Accordingly, the control unit according to the fifth modification of the present invention may determine that a punch-through occurs in a specific spud-can base 30 in a section in which the slope information of the spud can and the tilt information of the frame 10 vary greatly in time series. have.

The control unit according to the fifth modification of the present invention, when the control unit determines that a punch through has occurred in the specific spud can base 30, the spud can base 30 in which the punch through has occurred descends the lifting module 33 And the other spud can base 30 may control the lift module 33 to rise. The control unit elevates the lifting module 33 so that the punched-through spud can base 30 descends until the tilt information of the frame 10 measured by the sensor module 40 of the frame 10 is measured to be maintained horizontally. ), and the other spud can base 30 may control the lifting module 33 to rise.

Modification 6

Regarding the sixth modification of the present invention, when the penetration of the spud can base 30 is completed and the construction of the pre-filing template 1 is completed, the pile construction is performed and the pile is constructed on the specific pile guide 20 , Shear force is generated in the spud can base 30 by the pile being penetrated into the seabed ground, so that the spud can base 30 may be displaced or deformed. FIG. 16 is a schematic diagram showing changes in shear force and slope of the pre-filing template 1 generated when pile intrusion is constructed according to an embodiment of the present invention. As shown in Fig. 16, displacement or deformation of the spud can base 30 by pile penetration causes a gradient change of the pre-filing template 1.

According to a sixth modification of the present invention, when the pile is penetrated, the sensor module 40 measures the gradient change of the pre-filing template 1, and when the gradient change of a certain level or more is measured, the control unit elevates each pile guide 20 By controlling the module 33, the spud can base 30, which is the spud can base 30 close to the pile guide 20 through which the pile is penetrated, is fixed in height and pre-filed by lowering the remaining spud can base 30 After adjusting the level of the template 1, the level of the pre-filing template 1 can be configured to perform the construction of another pile. According to the sixth modification of the present invention, since the intrusion-side spud can base 30 is fixed at the height, the effect of adjusting the level of the pre-filing template 1 without displacement or support force fluctuation in the injected pile There is.

Modification 7

In relation to the seventh modification of the present invention, the spud can base 30 is drawn between the piles and piles after the spud can base 30 is drawn in the spud can base drawing step S14 according to an embodiment of the present invention. As the supporting force is lost in the space of the shearing force may be generated in the pile piled in the inner direction of the pre-filing template 1, or a problem in which the ground supporting the pile may sink.

The spud can base 30 according to the seventh modification of the present invention may further include a grout outlet and a grout bag. 17 is a schematic diagram showing a spud can base 30 according to a seventh modification of the present invention. As shown in FIG. 17, a grout outlet 34 and a grout bag 35 may be further configured on the spud can base 30 according to the seventh modification of the present invention. The grout outlet 34 is a through hole configured to penetrate the spud can base 30 up and down, and is configured to control opening and closing by a control unit, and configured to be opened and closed by pressure acting on the grout bag 35 Or, it may be configured in such a way that it is configured to open and close together with the drawing of the connecting member 32 of the lifting module 33. Grout bag 35 is configured on the top of the spud can base 30 can be connected to the grout outlet 34, the grout outlet 34 with the opening of the spud can base 30 is configured to flow out of the grout Can be. As shown in FIG. 17, when the spud can base 30 is drawn out, the grout outlet 34 is opened while the grout provided inside the grout bag 35 is through the spout can base 34 through the grout outlet 34 30). When the grout is discharged below the spud can base 30, the through hole formed by the penetration of the spud can base 30 is filled by the grout, and an effect of supporting the through hole is generated.

According to the spud can base 30 according to the seventh modification of the present invention, when the penetration of the pile is completed and the drawing of the spud can base 30 is performed in the spud can base drawing step (S14), the spud can base 30 ) Is raised, the grout outlet 34 is opened and the grout is discharged below the spud can base 30. The through-hole of the seabed ground formed due to the penetration of the spud can base 30 is supported by the outflow grout and settlement is prevented. After the subsea ground has been stabilized by the grout, the pre-filing template 1 is lifted and removed, and the off-shore structure is constructed on the pre-piled pile.

In the driving of the spud can base 30 according to the seventh modification of the present invention, in particular, when the grout outlet 34 is driven in a manner configured to be opened and closed by pressure acting on the grout bag 35, the lifting module ( According to the drawing of the connecting member 32 of 33), the vertical upward upward pressure acting on the upper surface of the spud can base 30 and the penetration of the spud can base 30 are applied to the upper surface of the spud can base 30. The vertical downward self-weight pressure acting on the upper surface of the spud can base 30 by the weight of the back flow of the accumulated subsea ground may be configured to act on the grout outlet 34 through the grout bag 35, The grout outlet 34 may be configured to be opened by the sum of the rising pressure of the decan base 30 and the back flow self-weight. According to this, there is an effect that the grouting of the through-hole generated by the penetration of the spud can base 30 is possible without a special mechanical device or control device.

Variation 8

In relation to the eighth modification of the present invention, the pre-filing template 1 using the spud can foundation according to the eighth modification of the present invention is a frame (only with the connecting member 32 and the spud can base 30 without lifting modules) 10) can be supported. In this case, the inner beam or the outer beam of the frame 10 may be combined so that the connecting member 32 is fixed, while the pre-filing template 1 is lowered, the spud can base 30 is driven by the weight of the pre-filing template. It may be configured to penetrate into the subsea soil and have support.

In the case of the eighth modification of the present invention, the pile guide 20 may be configured to rotate in a plurality of angles and directions to adjust the construction direction or angle of the pile. According to the eighth modification of the present invention, the beams of the frames 10 connected to the pile guides 20 may be connected by universal joints for the rotation of the pile guides 20, and the beams of the frames 10 are at least 2 It is composed of two or more sliding beams and may be configured to adjust the length by sliding the beams. Therefore, according to the eighth modification of the present invention, the angle and direction of the pile guide 20 positioned at the vertex of the frame 10 may be adjusted by adjusting the length of each beam of the frame 10.

As described above, a person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing its technical spirit or essential features. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. The scope of the present invention is indicated 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 interpreted to be included in the scope of the present invention.

1: Pre-filing template
10: frame
11: outer beam
12: inner beam
20: pile guide
21: sleeve
22: top lead
23: bottom lead
24: hinge
25: inlet
26: opening and closing member
30: Spudcan Basics
31: coupling member
32: connecting member
33: lifting module
34: grout outlet
35: grout bag
40: sensor module

Claims (8)

A pile guide for guiding the direction of piles constructed to penetrate into the seabed;
A spud can base for penetrating into the seabed and generating support force;
The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; And
A frame interconnecting the pile guide and the connecting member;
Including,
The spud can base is penetrated into the submarine ground to support the frame, characterized in that to guide the construction direction of the pile during pre-piling construction of the pile for the installation of offshore structures,
Pre-filing template using Spudcan basics.
According to claim 1,
The frame has a beam structure of a polygonal shape, and further includes an outer beam constituting the corner of the polygonal shape and an inner beam connecting the vertices and the center point of the polygonal shape,
The connecting member and the spud can base is characterized in that it is configured on one side of the inner beam,
Pre-filing template using Spudcan basics.
According to claim 1,
An upper lead configured to close the upper end of the pile guide and open and close the upper end of the pile guide by the control means;
A lower lead configured to close the lower end of the pile guide and to be opened and closed by the control means at the lower end of the pile guide;
An inlet penetrating through the upper lead or the lower lead so that seawater flows into the inner space of the pile guide; And
An opening/closing member configured in the inlet to open and close the inlet configured in the upper lead or the lower lead by the control means;
Further comprising,
When the upper lead and the lower lead are closed, characterized in that buoyancy is generated by the inner space of the pile guide,
Pre-filing template using Spudcan basics.
According to claim 1,
A spud-can sensor module configured on the spud-can base to generate spud-can tilt information that is tilt information of the spud-can base; And
A frame sensor module configured in the frame to generate frame tilt information that is tilt information of the frame;
Further comprising,
The control means receives the spud scan tilt information and the frame tilt information, and determines whether a punch-through based on the spud scan is generated based on a time-series change of the spud scan tilt information and the frame tilt information. Characterized by,
Pre-filing template using Spudcan basics.
According to claim 1,
A grout outlet configured to penetrate the spud can base up and down, the grout outlet configured to remain closed and open when the spud can base is drawn out;
It is configured on the top of the spud can base and is configured in the form of a bag for receiving grout therein, and connected to the grout outlet so that the grout flows downwardly along with the opening of the grout outlet. A grout bag consisting of;
Further comprising,
When the spud can base is drawn out, the grout outlet is opened, and the grout accommodated inside the grout bag is discharged downward from the spud can base.
Pre-filing template using Spudcan basics.
According to claim 1,
A lifting module configured to receive the connecting member, and driving the connecting member to slide in a direction parallel to the pile guide;
Further comprising,
The frame is configured to interconnect and fix the pile guide and the lifting module,
When the spud can base is in contact with the submarine ground, the connecting member is slid downward to control the lifting module so that the spud can base penetrates the submarine ground, and then the lifting module is adjusted so that the horizontal or height of the frame is adjusted. Characterized in that it comprises a control means for controlling the up or down driving of the connecting member of,
Pre-filing template using Spudcan basics.
A pile guide for guiding the direction of piles constructed to penetrate into the seabed; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; And a frame connecting the pile guide and the connecting member to each other.
A spud can foundation intrusion step of intruding the spud can foundation into the subsea ground;
A pile construction step of constructing the pile on the seabed ground by penetrating the pile guide using a pile penetration device after the spud can base of the pre-filing template is penetrated into the seabed ground;
A spud can foundation drawing step of drawing the spud can base after the construction of the pile is completed; And
A pre-filing template removal step of lifting and removing the pre-filing template after the drawing of the spud can base is completed;
Including,
Characterized in that a sea structure is installed on the basis of the pre-piled pile after the pre-filing template removal step,
How to install offshore structures using pre-filing templates.
A pile guide for guiding the direction of piles constructed to penetrate into the seabed; A spud can base for penetrating into the seabed and generating support force; The spud can base is configured to be coupled at one end, and a connecting member configured to be parallel to the pile guide; It is configured to receive the connecting member, the connecting member is a sliding module for driving to slide in a direction parallel to the pile guide and the frame for interconnecting and fixing the pile guide and the lifting module; A pre-filing template descending step of descending on the seabed;
A spud-can base penetration step of driving the elevating module after the spud-can base comes into contact with the seabed to infiltrate the spud-can base into the seabed;
An adjustment step of adjusting the horizontal or the height of the pre-filing template by controlling the elevating module according to the horizontal slope or height of the pre-filing template after the spud can base is intrusively installed in the subsea ground;
After the horizontal or the height of the pre-filing template is adjusted, a pile construction step of constructing the pile on the seabed by penetrating the pile guide using a pile penetration device;
A spud can foundation drawing step of drawing the spud can base after the construction of the pile is completed; And
A pre-filing template removal step of lifting and removing the pre-filing template after the drawing of the spud can base is completed;
Including,
Characterized in that a sea structure is installed on the basis of the pre-piled pile after the pre-filing template removal step,
How to install offshore structures using pre-filing templates.

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