KR101388099B1 - Constructing apparatus for spiral pile - Google Patents

Abstract

The present invention is a device for penetrating and constructing a spiral pile into the ground and, more specifically, a device for constructing a spiral pile including a structure for controlling vibration and conveniently performing a lift. A damper member formed with a heavy object is installed so that the vibration generated when the spiral pile is penetrated. Therefore, the change in a penetration position of the spiral pile is minimized. When the spiral pile is constructed on the sea bottom, a buoyancy unit is additionally installed or the heavy object is used as the buoyancy unit so that a work for lifting a construction device in the water.

Description

Spiral pile construction device with vibration suppression and lifting piece structure {Constructing Apparatus for Spiral Pile}

The present invention relates to a device for penetrating a spiral pile (spiral pile) on the ground, and specifically, to a device for constructing the pipe by rotating the spiral pile, by installing a damper member made of a heavy body, spiral In order to suppress the vibration generated during the penetration of piles and to minimize the fluctuation of the penetration position of spiral piles, and to install on the seabed, buoyant bodies are installed separately or the weight is used as a buoyant body. It relates to a "spiral pile construction apparatus having a vibration suppression and lifting convenience structure" to facilitate the lifting operation.

Spiral files are known as a kind of piles (piles) that are intrusively installed on the ground, and such spiral files are provided with substructures of substructures of tidal current generators or wind turbines, as disclosed in Korean Patent Registration No. 10-1233032. Can be used when fixed to the installation.

When constructing a spiral file, the spiral file is rotated by a rotating motor coupled to the top of the spiral file while the spiral file is placed perpendicular to the ground, and the spiral file is applied to the spiral file by applying a reaction force to the spiral file. Rotate pile into ground. However, when the spiral pile is rotated in this construction process, not only vibration occurs but also the upper end of the spiral pile moves along a circular orbit, thereby causing the rotation motor and the reaction force to swing. When the top of the spiral pile, the rotating motor and the reaction table swing, not only the rotation penetration efficiency of the spiral pile decreases, but also the spiral pile penetrates into the ground out of the originally designed vertical degree, resulting in a decrease in the process density. Done.

On the other hand, the factory device consisting of a construction device for injecting spiral piles into the ground, that is, a rotating motor, a reaction table, etc. is composed of a heavy weight. When the spiral piles are inserted into the sea bed, the factory piles are dropped into the water. It can be easily carried out by one's own weight from one state to the bottom of the seabed, but after completing the penetration construction of the spiral pile, a considerable lifting power is required to lift the heavy factory back to the sea. Offshore vessels should be equipped with large lifting equipment, such as large-capacity lifting motors, which in turn will lead to an increase in construction costs.

See Republic of Korea Patent Publication No. 10-1233032 (published on Feb. 19, 2013).

The present invention was developed to solve the problems of the prior art as described above, specifically, by increasing the rotation penetration efficiency of the spiral pile by suppressing the vibration and shaking generated in the construction apparatus during the process of injecting the spiral pile into the ground, spiral The pile is intended to provide a factory for spiral piles that can be precisely constructed according to the planned verticality.

In addition, the present invention is to put the factory of the spiral pile in the water to inject the spiral pile into the seabed, when lifting the factory to the sea after completion of the intrusion work, so that buoyancy acts, the sea lifting operation of the construction device It is an object of the present invention to provide a factory for spiral piles, which makes it easy to achieve this, thereby minimizing the lifting equipment and reducing the construction cost.

In order to achieve the above object, the present invention, combined with the upper end of the spiral pile and rotating the spiral file and at the same time by applying a descending force to the spiral file by descending and descending the spiral lifting member for injecting the spiral pile into the ground, and the ground A reaction force member which is installed vertically on the shaft member for raising and lowering the rotary elevating member to apply a downward force to the spiral pile, and a damper member installed on the reaction force member to suppress vibration and oscillation. Including; The damper member is integrally connected to the upper portion of the reaction band member, and the fluid or air is filled in the cylinder is made of a stretch cylinder that exerts a force proportional to the speed while stretching, and a weight body coupled to the upper portion of the stretch cylinder When the spiral pile is rotated and penetrated into the ground, when the vibration member and the oscillation are generated in the shaft member of the reaction force member, the expansion cylinder is stretched to suppress the vibration and the oscillation.

In the present invention as described above, the weight body may be composed of a hollow hollow member, in which case the fluid is filled in the hollow hollow of the weight when the spiral pile is inserted into the seabed; After the penetration installation of the spiral pile is completed, the fluid filled in the hollow of the weight body is discharged so that the buoyancy force acts upward on the weight body.

Furthermore, in the present invention as described above, the buoyancy body of the configuration that can be filled with the inside of the fluid is empty or the fluid inside to be discharged to the outside may be further provided integrally above the reaction table member, the buoyancy body The fluid is filled into the empty space when the spiral pile is inserted into the seabed; After the penetration installation of the spiral pile is completed, the fluid filled in the buoyancy body is discharged so that the buoyancy force acts upward on the buoyancy body.

In the spiral pile construction apparatus according to the present invention, since the damper member is provided at the upper portion of the reaction force member, even if the spiral pile rotates while the spiral pile is rotated in the ground, the vibration pile may cause vibration and shaking. It is possible to control the vibration and fluctuations as the expansion cylinder which is combined with the heavy body is stretched, and thus the spiral pile can be inserted into the ground while maintaining the vertical state stably and precise construction can be made according to the planned vertical degree. The effect that the rotation penetration efficiency of a pile improves is exhibited.

In the spiral pile construction apparatus according to the present invention, the weight of the damper member may be configured to receive a buoyancy and further may be provided with a separate buoyancy body, according to this configuration, lifting the spiral pile factory In order to lift the lifting force that the marine lifting equipment must exert in order to reduce by the buoyancy, it is possible to reduce the performance and scale required for the lifting equipment, thereby improving the construction economics by reducing the cost.

1 and 2 are schematic perspective views showing different directions of looking at a spiral pile factory according to the first embodiment of the present invention.
FIG. 3 is a schematic side view of the spiral pile construction device of the present invention shown in FIG. 1 showing that the spiral pile is in a state prior to penetration into the ground.
Figure 4 is a schematic side view of the spiral pile construction apparatus of the present invention shown in Figure 1 showing a spiral file is lowered to intrude into the ground.
5 is a schematic side view corresponding to FIG. 3 showing a state in which a spiral pile is inserted into a seabed by a spiral pile construction device according to a second embodiment of the present invention, in which a weight body is formed of a hollow member.
FIG. 6 is a schematic side view illustrating a state in which a spiral pile factory value is lifted after completion of construction of the spiral pile subsequent to the state illustrated in FIG. 5.
Figure 7 is a schematic perspective view of a spiral pile construction apparatus according to a third embodiment of the present invention further provided with a buoyancy body.
8 is a schematic side view showing a state of lifting the spiral pile factory shown in FIG. 7 after the construction of the spiral pile is completed.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby.

1 and 2 are schematic perspective views showing different directions of the spiral pile construction apparatus 1 according to the first embodiment of the present invention, respectively. 3 and 4 are schematic side views (side view in the direction of arrow A of FIG. 1) of the spiral pile construction apparatus 1 of the present invention shown in FIG. 1, respectively, and FIG. 3 shows that the spiral pile 2 is placed on the ground. 4 shows a state before the penetration, and FIG. 4 shows a state in which the spiral pile 2 descends to intrude into the ground.

As shown in the figure, the spiral pile construction apparatus 1 according to the present invention is coupled to the upper end of the spiral pile (2), while applying a rotational force and at the same time ascending and descending to rotate the lifting member to the spiral pile (2) (10) and the reaction force member 20 which is installed vertically on the ground and the shaft member that the rotary elevating member 10 is raised and lowered so that the descending force is applied to the spiral pile (2), and the reaction force It is configured to include a damper member 30 installed on the upper portion of the member 20 to suppress vibration and shaking.

First, from the configuration of the reaction table member 20, the reaction table member 20 has a vertical shaft member 25, in order to allow the shaft member 25 to be erected in a vertical state on the ground. The lower support plate 21 may be provided at the lower end of the 925. As mentioned above, the damper member 30 is installed on the upper portion of the reaction table member 20, the upper end of the shaft member 25 forming the reaction table member 20 for the convenience of installation of the damper member 30 The upper support plate 22 may be provided. In addition, the support member 23 is vertically disposed between the upper support plate 22 and the lower support plate 21 to increase the rigidity of the reaction table member 20 so that the upper support plate 22 and the lower support plate 21 are connected to each other. You may.

The rotating lifting member 10 is coupled to the shaft member constituting the reaction table member 20 so as to be lifted and lowered. That is, the rotary lifting member 10 is to move up and down along the shaft member of the reaction table member 20. And the rotary lifting member 10 is provided with a rotary motor (M), is coupled to the upper end of the spiral pile (2) to rotate the spiral pile (2) by the rotary motor (M). That is, the rotary lifting member 10 is coupled to the upper end of the spiral pile 2, the spiral pile 2 is rotated by the rotational force generated by the rotary lifting member 10, the rotary lifting member 10 The downward force is applied to the spiral pile 2 while the crest is lowered along the shaft member 25 of the reaction force member 20, and the spiral pile 2 is introduced into the ground.

The damper member 30 is integrally provided on the reaction table member 20. The damper member 30 is composed of a weight body 31 and the expansion cylinder (32). The expansion cylinder 32 is provided integrally coupled to the upper end of the reaction force member 20, the fluid (for example, oil) or air is filled in the cylinder to stretch and exert a force proportional to the speed It is a member, and may be provided in plurality. In particular, when the upper support plate 22 is provided on the shaft member of the reaction table member 20, the lower end of the expansion cylinder 32 is coupled to the upper support plate 22. The weight body 31 is coupled to the upper end of the expansion cylinder (32).

In constructing the spiral pile 2 using the spiral pile construction apparatus 1 according to the present invention having such a configuration, as shown in FIGS. 3 and 4, the spiral pile 30 is positioned above the spiral pile. With the construction device 1 placed on the ground surface, the rotary motor M of the existing elevating member 10 rotates and the elevating member 10 moves along the shaft member of the reaction table member 20. When descending, the spiral pile 2 descends while rotating and is introduced into the ground. At this time, the spiral pile (2) is rotated may cause vibration and shaking in the shaft member of the reaction table member 20, in the present invention, because the damper member 30 is provided on the upper portion of the reaction table member 20 When the vibration and the oscillation occurs in the shaft member, the expansion and contraction of the expansion cylinder 32 having the weight body 31 coupled to the upper end while suppressing the vibration and oscillation. That is, the vibration and oscillation in the reaction force member 20 are suppressed by the damper member 30.

Therefore, the spiral pile (2) is infiltrated into the ground while maintaining a stable vertical state, it is possible to precise construction in accordance with the planned vertical degree. In addition, since the vibration and shaking of the reaction force member 20 as well as the vibration and shaking of the spiral pile 2 itself are also suppressed, the spiral pile 2 can be smoothly rotated, and accordingly the spiral pile 2 The effect of improving rotation penetration efficiency is exhibited.

On the other hand, when the spiral pile 2 is introduced into the seabed using the spiral pile construction device 1 according to the present invention as described above, the weight body 31 of the damper member 30 is a member for generating buoyancy. It can be configured as.

Specifically, the weight body 31 may be composed of a hollow member hollow, Figure 5 and Figure 6 is a spiral pile construction apparatus according to a second embodiment of the present invention each of the weight body 31 is composed of a hollow member 3 and 4 are schematic side views corresponding to (1), and FIG. 5 shows a state in which the spiral pile 2 is inserted into the seabed, and FIG. 6 is shown after completion of the construction of the spiral pile 2. , Showing the state of lifting the spiral file construction device (1). In Figures 5 and 6 the weight 31 is shown in cross-sectional state for convenience.

In the case of the spiral pile construction apparatus 1 composed of a hollow member 31 having a hollow member, that is, a hollow portion 310 having an empty space therein, the spiral pile construction apparatus is placed in water ( When 1) is placed on the seabed surface and the spiral pile 2 is penetrated and installed, the state in which the fluid such as seawater is filled in the weight 31 is maintained as shown in FIG. Since the weight body 31 in a state filled with the fluid as described above maintains a heavy weight, as described above with reference to FIGS. 1 to 4, when the spiral pile 2 rotates and penetrates into the ground, the weight body By the weight of 31 and the expansion and contraction of the expansion and contraction cylinder 32, the effect of suppressing vibration and shaking is advanced.

After the subsea ground penetration installation of the spiral pile 2 is completed, the lifting member 10 is separated from the spiral pile 2 and the spiral pile construction device 1 is lifted. The fluid filled in will be discharged. A discharge pump (not shown) for forcibly discharging the fluid filled in the hollow of the weight body 31 may be further provided in the weight body 31.

When the fluid filled in the hollow part 310 of the weight body 31 is discharged to the outside, the buoyancy force acts on the weight body 31, and accordingly, the upward buoyancy force in the water direction is applied to the entire spiral pile construction device 1. Will work. Therefore, after injecting the spiral pile (2) into the seabed ground, in lifting the spiral pile construction device (1) to the sea by the lifting equipment (not shown) installed in the marine vessel using the lifting rope 40, The lifting force exerted by the lifting equipment of the marine vessel in order to lift the spiral pile construction device 1 is reduced by the buoyancy force acting on the weight body 31, thereby reducing the performance and scale required for the lifting equipment. It becomes possible. In other words, the lifting equipment can be miniaturized, and the construction economy can be improved by reducing the cost.

On the other hand, by making the interior of the weight body 31 as described above, filling the fluid inside the hollow or discharge the fluid from the hollow, or in parallel with the configuration, spiral pile construction apparatus according to the present invention ( 1) a new buoyancy body 5 may be further provided.

FIG. 7 is a schematic perspective view of a spiral pile construction device 1 according to a third embodiment of the present invention, in which a buoyancy body 5 is further provided. FIG. 8 is a spiral shown in FIG. 7 after completion of construction of the spiral pile. It is a schematic side view which shows the state of lifting the pile construction apparatus 1. As shown in FIG. For convenience, the buoyancy body 5 is shown in a cross-sectional state for convenience of description.

As shown in the figure, the buoyancy body 5 is configured to be filled with a fluid such as seawater and to discharge the fluid to the outside as needed, so that the reaction zone is located above the reaction zone member 20. It may be further provided in a state connected integrally with the member (20). In the embodiment shown in FIG. 7, the buoyancy body 5 is connected to the upper support plate 22 of the reaction table member 20 by the connecting line 51 and positioned above the weight body 4.

In the state in which the spiral pile construction apparatus 1 is inserted in the water in order to inject and install the spiral pile 2 into the sea bed, the fluid is filled in the buoyancy body 5 so that its own weight is applied to the spiral pile construction apparatus. (1) makes it easy to descend in water. When the seabed penetration installation work of the spiral pile 2 is completed and the spiral pile construction device 1 is lifted, the fluid filled in the buoyancy body 5 is discharged, so that the buoyancy body 5 Buoyancy acts. When the buoyancy acts upward on the buoyancy body 5 as described above, the lifting equipment of the marine vessel must be exerted to lift the spiral pile construction device 1 as in the case where the buoyancy force acts on the weight body 31. The lifting force is reduced, and thus the size of the lifting equipment can be reduced and the cost can be reduced. In addition to the configuration capable of filling and discharging the fluid inside the weight body 31, when such a buoyancy body 5 is further added, the effect of miniaturization of lifting equipment is further doubled. For reference, the present invention is derived from the research results of "Development of the support structure of the marine wind and tidal power for soft ground" of the future marine industry technology development project of the Ministry of Maritime Affairs and Fisheries (KIMT-2012-PJT200503).

1: spiral file construction device
2: spiral file
10: rotating member
20: reaction force member
30: damper member

Claims (3)

It is coupled to the upper end of the spiral pile (2) to rotate the spiral pile (2) and at the same time by applying a descending force to the spiral pile (2) by lifting and lowering the rotary lifting member (10) to inject the spiral pile (2) into the ground And a reaction force member 20 provided vertically on the ground and having a vertical shaft member 25 on which the rotary elevating member 10 moves up and down to apply a downward force to the spiral pile 2. And a damper member 30 installed above the reaction table member 20 to suppress vibration and shaking;
The reaction table member 20 is provided with a lower support plate 21 at the lower end of the shaft member 25 so that the shaft member 25 is erected in a vertical state on the ground, the damper member 30 of the The upper support plate 22 is provided at the upper end of the shaft member 25 for installation, and the support member 23 is vertically disposed between the upper support plate 22 and the lower support plate 21 so that the upper support plate 22 and the lower support plate 22 are provided. The supporting plates 21 have a configuration in which they are connected to each other;
The damper member 30, the lower end is integrally connected to the upper support plate 22 of the reaction force member 20, the fluid or air is filled in the cylinder is a plurality of expansion and contraction to exert a force proportional to the speed Comprised of a cylinder 32 and a weight body 31 coupled to the upper portion of the expansion cylinder 32, the spiral pile 2 is rotated and penetrated into the ground while vibrating the shaft member of the reaction force member 20 When oscillation occurs, the expansion cylinder 32 expands and contracts to suppress vibration and oscillation;
The weight body 31 is composed of a hollow hollow member. When the spiral pile 2 is inserted into the seabed, fluid is filled in the hollow of the weight body 31, and the spiral pile 2 is formed. When the rotation and penetration into the ground, the action of suppressing vibration and oscillation proceeds by the weight of the weight body 31 and the expansion and contraction of the expansion cylinder 32; After completion of the penetration installation of the spiral pile 2, the fluid filled in the hollow of the weight body 31 is discharged so that the buoyancy force acts upward on the weight body 31;
The buoyancy body 5 is configured to be filled with fluid or to discharge the fluid to the outside due to the empty interior, and is connected to the upper support plate 22 of the reaction force member 20 by the connecting line 51 to attach the weight body. It is further provided integrally above (4) so that the fluid is filled in the empty interior of the buoyancy body (5) when the spiral pile (2) is inserted into the seabed; Apparatus for constructing a spiral pile, characterized in that the buoyancy acts upward on the buoyancy body (5) by discharging the fluid filled in the buoyancy body (5) after the penetration installation of the spiral pile (2). delete delete

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