KR100837635B1 - Sector caisson for maintenance of the large underwater structures - Google Patents

Abstract

A sector caisson for repairing a large-sized underwater structure is provided to reduce size of the caisson and to easily access to the underwater structure by forming the caisson to be floated. A sector caisson for repairing a large-sized underwater structure comprises a bottom member(100), at least one outer buoyancy chamber, a left buoyancy chamber(400), a right buoyancy(500), and a waterproof packing(610). A left and a right side of the bottom member are symmetrically aligned. The bottom member has an arc bottom member waterproof side surface(110) to be contacted with a side surface of the underwater structure. The outer buoyancy chamber is symmetrically placed at an outer part of the bottom member, and forms an outer wall(310) of the bottom member. The buoyancy chamber adjusts buoyancy using water injected inside thereof. The left buoyancy chamber is connected with the outer wall and placed at the left part of the bottom surface to form a left wall(410) of the bottom member. The water is also injected to the left buoyancy chamber but with different water level for the outer buoyancy chamber. The left buoyancy chamber which is a left waterproof wall is contacted to the side surface of the underwater structure, and of which one of wall is connected with the bottom member waterproof side surface. The right buoyancy chamber is connected with the outer wall and symmetrically aligned to the left buoyancy chamber on the right side of the bottom member. The water level injected in the right buoyancy chamber is the same level to the left buoyancy chamber. The right buoyancy chamber which is a right waterproof wall is contacted to the side surface of the underwater structure, and of which one of wall is connected with the bottom member waterproof side surface. The waterproof packing is formed along the left waterproof wall and the right waterproof wall to prevent infiltration of water to an upper part of the bottom surface.

Description

Sector caissons for repairing large underwater structures {SECTOR CAISSON FOR MAINTENANCE OF THE LARGE UNDERWATER STRUCTURES}

1 and 2 are examples of large underwater structures,

3 is a perspective view of a first embodiment according to the present invention;

4 is a plan view of a first embodiment according to the present invention;

5 is a front view of a first embodiment according to the present invention;

6 is a view showing a state in which the caisson submerged in the water in the state that the water is not injected into the buoyancy chamber of the first embodiment,

7 is a view showing a state in which the caisson submerged in the state in which water is injected into each buoyancy chamber of the first embodiment,

8 is a plan view and a side view showing a state in which the first embodiment is installed in a large cylindrical underwater structure;

9 to 11 are a perspective view, a plan view and a front view of the first embodiment with the auxiliary bottom assembled;

12 is a plan view and a side view showing a state in which the first embodiment of the auxiliary floor is assembled to the planar portion of the large oval underwater structure;

13 to 15 are a perspective view, a plan view and a front view of a modification of the first embodiment according to the present invention;

16 is a plan view and a side view of the sector caisson of FIG. 13 installed in a cylindrical large underwater structure;

17 and 18 are a plan view and a front view of another modification of the first embodiment according to the present invention;

19 to 20 is a view showing a state in which the embodiment of Figure 17 is installed in a large cylindrical underwater structure.

<Description of Symbols for Main Parts of Drawings>

100: bottom 110: arc bottom order side

200: auxiliary floor body 210: secondary floor order side

300: outer buoyancy chamber 310: outer wall

400: left buoyancy chamber 410: left wall

411: left side order wall surface 412: left side order wall surface

500: right buoyancy chamber 510: right wall

511: right side order wall surface 512: right side order wall surface

610: Order packing 620: Vertical auxiliary order packing

630: Horizontal auxiliary bottom order packing

Republic of Korea Utility Model No. 20-0315974 "Caison for Repair of Underwater Structures"

Republic of Korea Patent No. 10-0641605 "caisson for working underwater structures"

The present invention relates to a caisson for repairing a large underwater structure, and more particularly, a caisson for making a dry working environment when repairing a large underwater structure is made cheaper and more compact, making repair work more economical. It also relates to a sector type caisson that can be moved quickly in an emergency.

In the case of offshore structures, the service life of the structure is adversely affected by the corrosion of concrete and steel pipe piles at the base of the structure due to the difference between tides. As a countermeasure against this corrosion phenomenon, various maintenance methods have been developed. For example, land coating, electric method, tape, underwater paint, sheet pipe pile (SHEET PILE), etc. has been developed, such methods have a problem that the reliability of the work is somewhat less expensive and expensive. To solve this problem, a dry caisson method has recently been proposed.

Korean Utility Model No. 20-0315974, which is proposed by the present inventor and incorporated herein, discloses a caisson positioned on the side of a seat pile using a crane or the like. However, such a caisson is not able to float on the water, so moving equipment such as a crane is required, and the mobility is severely limited, which makes it difficult to evacuate in case of emergency.

Also proposed by the present inventors, the Republic of Korea Patent No. 10-0641605 "Kayson for underwater construction work" is integrated in the present specification can be made to the body having a buoyancy tank wraps the steel pipe pile to create a dry working environment.

However, it is unreasonable to apply such a conventional technique to a large underwater structure as it is.

For example, when several steel pipe piles of a large pier are provided adjacent to each other, as shown in FIG. 1, other steel pipe piles, in addition to the steel pipe piles to be worked, act as obstacles to hinder the movement of the caissons. It is difficult to proceed with work by accessing the steel pipe piles, and even when the steel pipe piles are accessed, emergency evacuation is difficult.

In addition, in the case of a large structure as shown in Figure 2 in order to apply the caisson of the prior art, there is a problem that the caisson must be excessively large in order to wrap it.

The present invention allows the work to proceed in a partially wrapped state rather than wrapping the entire large underwater structure for repair of such a large underwater structure, and also to allow the caisson to move in a floating body (FLOATING BODY), The caissons are designed to be fairly compact, provide access to large underwater structures, and provide a new structure of dry work caissons that can be easily evacuated in case of emergency.

In order to solve the above problems, the present invention provides a caisson for repairing a large underwater structure: a bottom body having a symmetrical form and having a bottom order side surface formed in contact with the side surface of the large underwater structure; At least one outer buoyancy chamber provided in the form of symmetry on the outside of the bottom to form an outer wall of the bottom, wherein water is injected to adjust buoyancy therein; It is connected to the outer wall, is formed on the left side of the bottom to form a left side wall of the bottom, the water is injected to adjust the buoyancy therein but at a different level than the level of water injected into the outer buoyancy chamber, Any one of the wall surface constituting the left wall is a left buoyancy chamber which is connected to the bottom order side surface and is a left order wall surface formed in contact with the side surface of the large underwater structure; It is connected to the outer wall, provided on the right side of the bottom symmetrical with the left buoyancy chamber to form the right wall of the bottom, the water is injected to adjust the buoyancy inside the water level of the injected to the left buoyancy chamber and A right buoyancy chamber having the same water level, wherein any one of the wall surfaces constituting the right wall is a right order wall surface which is connected to the bottom order side surface and is in contact with the side surface of the large underwater structure; An order packing provided along the left order wall surface, the bottom order side surface, and the right order wall surface to order the upper portion of the bottom body; Characterized in that comprises a.

In the above, the bottom order side is preferably an arc bottom order side formed to contact the side of a large underwater structure having a circular cross section.

In the above description, any one of the wall surfaces constituting the left wall is a left auxiliary order wall surface adjacent to the left order wall surface, and any one of the wall surfaces constituting the right wall is adjacent to the right order wall surface and the left auxiliary order. It is preferable that the wall is a right auxiliary order wall located on an imaginary plane formed by a wall, and a vertical auxiliary order packing is added to each of the left auxiliary order wall and the right auxiliary order wall.

In the above, it is detachably provided on top of the bottom, includes a planar shape of the bottom and extends therefrom and is formed on an imaginary plane between the left auxiliary order wall surface and the right auxiliary order wall surface. An auxiliary bottom may be added that includes an auxiliary bottom order side on which a horizontal auxiliary bottom order packing is provided.

First, the present invention will be described before explaining the present invention.

The present inventors have tried to use the modified Korean "Kayson for underwater structures" No. 10-0641605 to repair a large underwater structure. That is, since the prior art is configured in a ring shape, it was thought that the desired purpose could be achieved by dividing it into several pieces.

However, it has been found that there is a serious problem in its mobility when simply using the conventional technology in this manner. That is, the conventional technology itself is very balanced itself, so the mobility is not a problem, but by splitting the ring-shaped caissons, the caissons are floated on the water through the buoyancy tank chamber in the unbalanced state. In this case, it was found that the caissons could easily be overturned by small waves during the movement, which caused considerable danger.

To this end, the present inventors provide a plurality of buoyancy chambers to compensate for the unbalanced parts of the caissons, and the level of each buoyancy chamber is different so that the buoyancy chambers can receive different buoyancy so as to stably float on the water while maintaining the balance of the overall case. The filling of other waters allowed a stable movement of the caissons.

Hereinafter, the configuration and operation will be described in detail based on the first embodiment of the present invention.

Figure 3 is a perspective view of a first embodiment according to the present invention, Figure 4 is a plan view of a first embodiment according to the present invention, Figure 5 is a front view of a first embodiment according to the present invention, Figure 6 is a first FIG. 7 is a view illustrating a state in which caissons are immersed in water in a state where water is not injected into the buoyancy chamber of the embodiment, and FIG. 7 illustrates a state in which caissons are submerged in water while water is injected into each buoyancy chamber of the first embodiment. 8 is a plan view and a side view showing a state in which the first embodiment is installed in a large cylindrical underwater structure.

This embodiment largely consists of the bottom body 100, the outer buoyancy chamber 300, the left buoyancy chamber 400 and the right buoyancy chamber 500, and the order packing.

Each buoyancy chamber (300, 400, 500) will be provided with a water inlet for injecting water into the buoyancy chamber and to discharge the injected water, and also for the air inside and out when water is injected and discharged It is preferred that an air inlet is also formed. Since this content is already published in the prior art Patent No. 10-0641605, detailed description thereof will be omitted, and not shown separately in the drawings of the present specification.

The bottom 100 is a portion of the upper portion of the work space for the worker to work, and the water of the upper portion of the bottom 100 approaches the underwater structure and is drained to create a dry working environment.

The bottom body 100 has a symmetrical form as seen in its plan view, and has an arc-shaped bottom order side 110 formed to contact the side surface of a large underwater structure having a circular cross section therein.

All parts of the floor 100 except for the arc-shaped floor order side 110 are walled by buoyancy chambers 300, 400, and 500.

In addition, the order packing 610 is provided on the arc-shaped floor order side 110 elongated in the horizontal direction.

The outer buoyancy chamber 300 is provided in the form of left and right symmetry on the outside of the bottom body 100, and the outer buoyancy chamber 300 forms the outer wall 310 of the bottom body 100.

In addition, water is injected into the outer buoyancy chamber 300 to adjust the buoyancy.

In the present embodiment, the outer buoyancy chamber 300 is provided with the outer buoyancy chambers 300-2 and 300-3 on the left and right sides with respect to the center outer buoyancy chamber 300-1, respectively.

The left buoyancy chamber 400 is provided on the left side of the bottom body 100, is connected to the outer wall 310 of the outer buoyancy chamber 300-2, and the left buoyancy chamber 400 is on the left side of the bottom body 100. The wall 410 is formed.

Water is injected into the left buoyancy chamber 400 to adjust the buoyancy.

Meanwhile, one wall surface of the left wall 410 of the left buoyancy chamber 400 is the left order wall surface 411, and the left order wall surface 411 is connected to the bottom order side surface 110 and is also the side surface of the large underwater structure. It is formed to be in contact with. The left order wall surface 411 is for the order packing 610 to be provided long in the vertical direction.

In addition, a left auxiliary order wall surface 412 is provided adjacent to the left order wall surface 411. The left auxiliary order wall surface 412 is also formed in contact with the side of the large underwater structure, the vertical auxiliary order packing 620 to be described later is to be provided in the vertical direction.

The right buoyancy chamber 500 is provided on the right side of the bottom body 100, is connected to the outer wall 310 of the right buoyancy chamber 300-3, and the right buoyancy chamber 500 is on the right side of the bottom body 100. The wall 510 is formed.

Water is injected into the right buoyancy chamber 500 to adjust the buoyancy.

Of course, the right buoyancy chamber 500 is provided to be symmetrical with the left buoyancy chamber 400, the amount of water injected into the right buoyancy chamber 500 should be equal to the amount of water injected into the left buoyancy chamber 500.

On the other hand, one wall surface of the right wall 510 of the right buoyancy chamber 500 is the right order wall surface 511, the right order wall surface 511 is connected to the bottom order side surface 110 and the side surface of the large underwater structure. It is formed to be in contact with. The right order wall surface 511 is provided so that the order packing 610 is elongated in the vertical direction.

In addition, the right auxiliary order wall surface 512 is provided adjacent to the right order wall surface 511. The right auxiliary order wall surface 512 is also formed to be in contact with the side surface of the large underwater structure, the vertical auxiliary order packing 620 to be described later is to be provided long in the vertical direction. The right auxiliary order wall surface 512 and the left auxiliary order wall surface 412 may be located on one virtual plane. The functions of the right auxiliary order wall surface 512 and the left auxiliary order wall surface 412 are normally operated by the auxiliary bottom body 200 described later.

FIG. 6 shows the model of the present embodiment, in which the buoyancy chambers 300, 400, and 500 are completely empty. When the model caisson about 50cm high is floated in water, the depth of caisson submersion is 15cm, which is very unstable.

FIG. 7 illustrates the same model as in FIG. 6 in a state in which a proper amount of water is injected into the buoyancy chambers 300, 400, and 500. Water of 35 cm level in the outer buoyancy chamber 300-1, water of 25 cm in the outer buoyancy chambers 300-2 and 300-3, and in the left buoyancy chamber 400 and the right buoyancy chamber 500 Water of 19cm level was injected, and the caisson of 50cm height was able to confirm that about 28cm was submerged in water and made a very stable state.

Of course, the amount of water injected into each buoyancy chamber (300-1, 300-2, 300-3, 400, 500) may vary depending on the embodiment, but considering the shape of the sector caisson at least the left and right buoyancy chamber (400, 500) ) Is preferably injected with a smaller amount of water than the outer buoyancy chamber (300).

FIG. 8 shows a plan view and a side view of the present sector caisson with the large underwater structure 10 installed.

Water at the top of the bottom 100 was drained, and is also sealed by the order packing 610 between the side of the large underwater structure 10 and the main sector caisson. Accordingly, the order packing is provided along the left order wall surface 411, the bottom order side surface 110, and the right order wall surface 511 where the sector caisson is in contact with the large underwater structure 100, as shown in FIGS. 3 to 5. .

If a dry working environment is made in a part of the steel pipe pile and repaired, the repair of the steel pipe pile is repeated by moving the main sector caisson to the next part of the same steel pipe pile, making the dry working environment again, and repairing it. This can be done very conveniently.

9 to 11 are a perspective view, a plan view, and a front view of a first embodiment in which an auxiliary bottom is assembled, and FIG. 12 is a state in which a first embodiment in which an auxiliary bottom is assembled is installed at a planar portion of an oval large underwater structure. It is shown.

An auxiliary bottom 200 may be additionally installed on the bottom 100.

The auxiliary bottom 200 includes an auxiliary bottom plate 230 having a plurality of supports 220 provided on a bottom thereof, and an auxiliary bottom order side 210 formed inside the auxiliary bottom plate 230.

Auxiliary bottom plate 230 basically includes the planar shape of bottom 100 and also extends to secondary bottom order side 210. The auxiliary bottom order side 210 is formed on an imaginary plane formed by the left auxiliary order wall surface 412 and the right auxiliary order wall surface 512, and is further provided with a horizontal auxiliary floor order packing 630.

The left and right sides of the horizontal auxiliary bottom order packing 630 are in contact with or adjacent to the bottom of the vertical auxiliary order packing 620.

When the auxiliary floor 200 is installed, as shown in FIG. 12, the sector caisson may be installed on a flat portion of a large underwater structure having an elliptical shape to perform a dry operation.

13 to 15 are a perspective view, a plan view, and a front view of a modification of the first embodiment according to the present invention, and FIG. 16 shows a state in which the sector caisson of FIG. 13 is installed in a cylindrical large-scale underwater structure.

In this embodiment, although the outer buoyancy chamber 300 is formed in two and its form is slightly different from the first embodiment, the basic technical concept is the same.

17 to 18 are plan and front views of another modification of the first embodiment according to the present invention.

As shown in the present embodiment, the interval maintaining device 320 is provided, and the height adjustment hydraulic cylinder 700 is provided.

The gap maintaining device 320 has one end fixed to the outer wall 310 and the other end is in contact with the large underwater structure, so as to maintain a constant gap between the outer wall 310 and the large underwater structure.

The gap maintaining device 320 may be generally used a screw jack, it is preferably provided in plurality.

The height-adjusted hydraulic cylinder 700 may be a double-acting hydraulic cylinder and the like, the details of which are as described in the prior art Patent Registration 10-0641605.

In addition, a drain pump for discharging water from the upper part of the bottom to the outside may be fixed to the upper part of the bottom 100. Of course, depending on the embodiment, an external drainage pump can also be used.

19 and 20 illustrate a state of using the caisson of FIG.

In particular, in the present state diagram, the sector caisson is installed in the direct file or the matter file 10, and then the lower part of the sector caisson is fixed to the direct file or the matter file 10 by the file holder 800 for a safer operation.

The above embodiments are only preferred embodiments of the present invention, and the technical spirit of the present invention may be variously modified or adjusted by those skilled in the art. Such modifications and adjustments fall within the scope of the present invention if they use the technical idea of the present invention.

As described above, the present invention allows the work to be carried out in a partially wrapped state rather than wrapping the entire large underwater structure for repair of the large underwater structure, and also allows the caisson to move in a floating body type, for repair. The caissons can be made quite compact in size, provide greater access to large underwater structures, and provide new construction dry caissons that can be easily evacuated in case of emergency.

Claims (6)

In caissons for repairing large underwater structures: A bottom body having a symmetrical form and having a bottom order side formed in contact with a side surface of a large underwater structure; At least one outer buoyancy chamber provided in the form of symmetry on the outside of the bottom to form an outer wall of the bottom, wherein water is injected to adjust buoyancy therein; It is connected to the outer wall, is formed on the left side of the bottom to form a left side wall of the bottom, the water is injected to adjust the buoyancy therein but at a different level than the level of water injected into the outer buoyancy chamber, Any one of the wall surface constituting the left wall is a left buoyancy chamber which is connected to the bottom order side surface and is a left order wall surface formed in contact with the side surface of the large underwater structure; It is connected to the outer wall, provided on the right side of the bottom symmetrical with the left buoyancy chamber to form the right wall of the bottom, the water is injected to adjust the buoyancy inside the water level of the injected to the left buoyancy chamber and A right buoyancy chamber having the same water level, wherein any one of the wall surfaces constituting the right wall is a right order wall surface which is connected to the bottom order side surface and is in contact with the side surface of the large underwater structure; An order packing provided along the left order wall surface, the bottom order side surface, and the right order wall surface to order the upper portion of the bottom body; Sector caisson for repairing large underwater structures comprising a. The method of claim 1, Said bottom order side is a sector caisson for repairing a large underwater structure, characterized in that the arc bottom order side formed to contact the side of the large underwater structure having a circular cross-section. The method of claim 2, Any one of the wall surfaces constituting the left wall is a left auxiliary order wall surface adjacent to the left order wall surface, Any one of the wall surfaces constituting the right wall is a right auxiliary order wall surface adjacent to the right order wall surface and positioned on an imaginary plane formed by the left auxiliary order wall surface, Sector caisson for repairing a large underwater structure, characterized in that the vertical auxiliary order packing is added to each of the left side and the right side wall. The method of claim 3, wherein It is detachably provided on top of the floor, includes a planar shape of the floor, and extends therefrom, and is formed on a imaginary plane formed by the left auxiliary order wall surface and the right auxiliary order wall surface, and has a horizontal auxiliary floor. A sector caisson for repairing a large underwater structure, characterized in that an auxiliary bottom is added comprising an auxiliary bottom order side on which sieve packing is provided. The method according to any one of claims 1 to 4, One end is fixed to the outer wall and the other end is in contact with the large underwater structure is a large underwater structure, characterized in that a plurality of gap maintaining device for maintaining a constant gap between the outer wall and the large underwater structure is provided Sector caisson for repair. The method according to any one of claims 1 to 4, A sector caisson for repairing a large underwater structure, characterized in that the drain pump is fixed to the top of the bottom to discharge the water from the top of the bottom to the outside.

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