KR100641605B1 - Caisson for maintenance of under- water structure - Google Patents

Abstract

The present invention relates to a caisson for working with underwater structures, and more particularly, to assemble a split body in the steel pipe pile portion to work to perform the work on the steel pipe pile of the underwater structure and then drain the water inside the body space inside the body It relates to a caisson for underwater structures that can work on a three-dimensional surface rather than a plane by making a dry environment.

Steel pipe pile, caisson, order packing

Description

Caisson for underwater structure work {Caisson for maintenance of under- water structure}

1 is a cross-sectional view showing a state in which the caisson for underwater structure work according to a preferred embodiment of the present invention is installed in the underwater structure.

Figure 2 is a plan view of the caisson for working with the underwater structure of Figure 1;

3 is a perspective view showing a state packing attached to any one of the divided body of the body of FIG.

4 is a cross-sectional view taken along line A-A of FIG.

Figure 5a is a perspective view showing one side of the caisson for working with the underwater structure of Figure 1;

Figure 5b is a perspective view showing the other side of the caisson for working with the underwater structure of Figure 1;

Figure 6 is an enlarged cross-sectional view of the body opening and closing device of Figure 5a.

FIG. 7 is an enlarged cross-sectional view of the shift preventing device of FIG. 5B; FIG.

8 is an enlarged cross-sectional view of the height adjustment hydraulic cylinder of FIG.

9 is a cross-sectional view showing a state in which the caisson for underwater structure work according to another embodiment of the present invention is installed in the underwater structure.

10 is a plan view of the pedestal of FIG.

FIG. 11A is a bottom view illustrating a state in which the pedestal of FIG. 9 is fixed to one side of a floor; FIG.

FIG. 11B is a schematic sectional view of a main portion of the pedestal of FIG. 11A; FIG.

<Explanation of symbols for the main parts of the drawings>

100, 110 ': caisson 110: body

110-1, 110-2: split body 110a, 110b: body joint

110c: structure connection part 112: structure through hole

111: floor 111-1, 111-2: split floor

113: wall 113-1, 113-2: partition wall

115: order packing seating portion 120: body hinge portion

121: arm 123: hinge axis

130: body opening and closing device 131-1, 131-2: support member

133: hydraulic cylinder 133a: piston

133b: oil outlet 133c: cylinder

133d: Piston Rod 133e: Rod

140: shift prevention device 150: order packing

151: hollow 153: fixing bolt

155: nut 170: buoyancy tank

200: pedestal 200a, 200b: pedestal junction

200c: structure joint 212: structure fixing hole

220: pedestal hinge portion 230: pedestal opening and closing device

240a, 240b: fixed plate 250: fixed shaft

270: buoyancy control pump 280: vent

300: height adjustment hydraulic cylinder 310: impact buffer

400: drain pump 410: scaffold

420: drainage pump hose 500: spacing device

700: underwater structure 710: slab

730 steel pipe pile

l: Overall length of double acting hydraulic cylinder

The present invention relates to a caisson for working with underwater structures, and more particularly, to assemble a split body in the steel pipe pile portion to work to perform the work on the steel pipe pile of the underwater structure and then drain the water inside the body space inside the body It relates to a caisson for underwater structures that can work on a three-dimensional surface rather than a plane by making a dry environment.

The pier bridge port is the most widely used among the various pier, and the pier using the pier port is low cost of facility is currently being constructed a lot. These pier bridge harbors steel pipe piles in the pier facility area, i.e., the coastal sea floor, and puts slabs made of concrete mortar on top of the steel pipe piles. By the way, there is a problem that corrosion occurs by seawater in the splash and tidal zones (near 2m above and below sea level) of steel pipe piles. Here, the splash is not directly in contact with the sea water, but refers to the portion where the sea water is scattered by the waves, tidal refers to the part that is periodically submerged in the sea water or exposed to the air by the high and low tide of the sea water. As the corrosion of steel pipe piles occurs in splash and tidal zones a lot, conventional methods for preventing such corrosion include selection of corrosion resistant materials, organic coating method (painting, plating), electrical method, and improvement of corrosion environment. The work is difficult because the work must be carried out underwater.

The caisson for the operation of such an underwater structure is presented in the publication of the Korean Utility Model Registration No. 20-0315974 filed by the inventor of the present invention, the design is incorporated herein. According to this publication, it is fixed and disposed along the open face of the caissons in contact with the underwater structure and comprises a degree packing with one or more acids and one or more valleys and a tube inserted into the valleys of the degree packings to enhance the order function of the caissons. It is configured to perform repair work on underwater structures such as sheet piles. However, the caisson of the present invention can be easily used when performing a work on a plane, such as a sheet pile, it can not be used when working on a three-dimensional surface such as a steel pipe pile.

The present invention has been made in order to solve the above-mentioned problems, the assembly of the divided body to the steel pipe pile portion to work to perform the work on the steel pipe pile of the underwater structure and then drain the water inside the body space inside the body Its purpose is to provide a caisson for underwater structures that can work on a three-dimensional surface rather than a plane by making it a dry environment.

The caisson for underwater structure operation of the present invention for achieving the above object is in the caisson for underwater structure operation for performing the operation on the steel pipe pile of the underwater structure consisting of a slab and a steel pipe pile for supporting the lower slab, the steel pipe pile And a split body and a wall which extends from the outer periphery of the bottom, wherein the bottom body and the wall are cut through the structure through-hole. A body divided into at least two divided bodies comprising a wall; An order packing fixed to the body along a joint between the split bodies and a joint between the bottom body and the steel pipe pile; And a buoyancy tank provided on the body to receive the buoyancy.

According to this configuration, the subdivided body is assembled to the steel pipe pile part to work on the steel pipe pile of the underwater structure, and then the water inside the body is drained to make the space inside the body into a dry environment, so that it is three-dimensional You can work with faces.

In the above-described configuration, one of the junctions of the divided bodies forms a free end, and the other junction of the junctions of the divided bodies is the outer side of the junction between the divided bodies with respect to the center of the bottom body. Hinged and fixed to each other by the body hinge portion provided in the.

In the above configuration, it is preferable that at least one body opening and closing device for opening and closing the divided bodies on the outside of the body hinge portion based on the center of the bottom body is provided.

On the other hand, the caisson for underwater structure work according to the present invention is a structure fixing hole through which the steel pipe pile is formed, one joint portion is hinged by a pedestal hinge portion provided in the lower portion of the body opening and closing with respect to the steel pipe pile A pair of pedestals constituting a possible structure; A pedestal opening and closing device provided on an outer side of the pedestal hinge portion based on the structure fixing hole to open and close the pedestal; Can be.

In the above-described configuration, in order to adjust the buoyancy of the buoyancy tank, it is preferable that a buoyancy control pump connected to the buoyancy tank is provided to inject water into the buoyancy tank or to discharge the water stored in the buoyancy tank to the outside. Do.

A caisson for underwater structure work according to another feature of the present invention may be provided with a plurality of height-adjusting hydraulic cylinders whose one end is fixed to the body and the other end is in contact with the slab to adjust the distance between the body and the slab.

According to this configuration, by lowering the body in the opposite direction of the buoyancy action is provided with a device for adjusting the distance between the slab bottom and the top of the wall can be installed in the correct position of the steel pipe pile to be worked in a simple way.

In the above configuration, it is preferable that any one of the body opening and closing device, the pedestal opening and closing device, the height-adjusting hydraulic cylinder is made of a double-acting hydraulic cylinder.

In the above-described configuration, when the displacement preventing device coupled to each other in a concave-convex shape is added to the outside of the joint between the divided bodies on the basis of the center of the bottom body in order to prevent the displacement between the divided bodies when bonding between the divided bodies. Even if the pair of divided bodies are in contact with each other, the uneven portions of both sides are naturally coupled so that the divided bodies can be exactly in contact with each other in height.

In the above-described configuration, it is preferable that a drain pump for discharging water inside the body to the outside is fixedly provided in the body.

In the above-described configuration, when one end is fixed to the wall and the other end is in contact with the steel pipe pile to provide a plurality of gap maintaining devices for maintaining a constant gap between the wall and the steel pipe pile, the caisson is formed by waves or the like. The internal space of the caisson can be kept constant even under external force, which can help the worker's convenience in working with the steel pipe pile.

In the above-described configuration, when the order packing is detachably coupled to the joints, when the order packing is worn out due to long-term use, the new order packing may be replaced.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

For reference, among the configurations of the present invention to be described below, the same configuration as the prior art will be referred to the above-described prior art, and a detailed description thereof will be omitted.

1 is a cross-sectional view showing a state in which the caisson for underwater structure work according to a preferred embodiment of the present invention is installed in the underwater structure, Figure 2 is a plan view showing the caisson for underwater structure work of FIG.

1 and 2, the caisson 100 for working with an underwater structure according to the present embodiment is a steel pipe among the underwater structure 700 including a slab 710 and a steel pipe pile 730 supporting a lower portion of the slab 710. In the caisson 100 for the underwater structure work for performing the work on the pile 730, the body 110 is divided into at least two divided bodies (110-1, 110-2), and fixed to the body (110) It includes the order packing 150 and the buoyancy tank 170 provided on the body 110.

The body 110 includes a bottom body 111 having a structure through-hole 112 through which the steel pipe pile 730 penetrates, and a wall 113 extending upward from an outer circumference of the bottom body 111.

In addition, the body 110 is divided bottoms 111-1, 111-2 and the divided walls 113-1, 113, the bottom 111 and the wall 113 are cut while passing through the structure through-hole 112. -2) divided into at least two or more divided bodies (110-1, 110-2).

In other words, the divided bodies 110-1 and 110-2 are composed of divided bottoms 111-1 and 111-2 and divided walls 113-1 and 113-2, respectively, and preferably a pair of divided bodies. 110-1 and 110-2 form the body 110, and the body 110 has an open top surface.

The internal space of the body 110 is a space in which the worker can work.

Although the bottom body 111 is shown in a circular shape in the drawings of the present invention, the present invention is not limited thereto, and the bottom body 111 may be variously modified.

The structure through-hole 112 is the same as the cross-sectional shape of the steel pipe pile 730 to be worked and may vary depending on the cross-sectional shape of the portion to be worked.

In addition, in the embodiment of the present invention has been shown and described as the body 110 is composed of a pair, but is not limited thereto.

3 is a perspective view illustrating a state in which the order packing is attached to any one of the divided bodies of FIG. 2, and FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3.

Referring to Figures 3 and 4, the order packing 150 is a junction between the split body (110-1, 110-2) (110a, 110b) and the bottom 111 and the steel pipe pile (730) It is fixed to the body 110 along the portion (110c). That is, the order packing 150 is provided for each of the divided body (110-1, 110-2) consisting of the divided bottom body (111-1, 111-2) and the divided wall (113-1, 113-2) will be.

The order packing 150 is preferably made of hard rubber, the hollow 151 may be formed.

Here, the order packing 150 is preferably detachably coupled to the junction (110a, 110b, 110c).

The body 110 has an order packing seating portion 115 formed along a portion where the order packing 150 is coupled, and the order packing 150 has a bolt 153 formed with a bolt head inside the hollow 151. Is provided integrally.

The order packing seating portion 115 has a 'c' shape, and the order packing 150 is seated on the concave portion of the order packing seating portion 115.

The fixing bolt 153 integrally provided in the order packing 150 is configured to penetrate the order packing seating part 115.

When the nut 155 is tightened to one end of the fixing bolt 153 passing through the order packing seating part 115, the order packing 150 is fixed to the order packing seating part 115.

Thus, the order packing 150 by the fixing bolt 153 provided in the order packing 150 is removable to the order packing seating portion (115).

Therefore, when the order packing 150 is worn out due to long-term use, the new order packing 150 may be replaced.

As shown in FIG. 1, the buoyancy tank 170 is provided in the body 110 such that the body 110 may receive buoyancy.

In detail, the buoyancy tank 170 is formed in each of the dividing walls 113-1 and 113-2, and these buoyancy tanks may be separately provided and attached to the outside of the body 110.

The buoyancy tank 170 is filled with a fluid such as air lighter than water so that the body 110 receives the buoyancy. The buoyancy tank 170 may be in a vacuum state.

Figure 5a is a perspective view showing one side of the caisson for working with the underwater structure of Figure 1;

Referring to FIGS. 2 and 5A, one junction portion 110a of the junction portions 110a and 110b of the division bodies 110-1 and 110-2 forms a free end and the division body 110-1 is used. , The remaining joints 110b of the joints 110a and 110b of the 110-2 are connected to the joints 110b between the split bodies 110-1 and 110-2 based on the center of the bottom body 111. Hinged and fixed to each other by the body hinge portion 120 provided on the outside.

The body hinge portion 120 includes an arm 121 fixed to the dividing walls 113-1 and 113-2, and a hinge shaft 123 connecting the arms 121.

Three body hinge parts 120 are configured along the lengthwise direction of the dividing walls 113-1 and 113-2, and the number of the body hinge parts 120 is not limited.

6 is an enlarged cross-sectional view of the body opening and closing device of FIG. 5A.

As shown in FIG. 5A, at least one body opening and closing device 130 for opening and closing the divided bodies 110-1 and 110-2 on the outside of the body hinge portion 120 based on the center of the bottom body 111. ) Is provided.

Body opening and closing device 130 is preferably a double-acting hydraulic cylinder, a pair of supporting members on both sides of the arm 121 of the body hinge portion 120 is fixed to the partition wall (113-1, 113-2) ( 131-1 and 131-2 are provided, and the double-acting hydraulic cylinder 133 is provided in this support member 131-1 and 131-2.

As shown in FIG. 6, the double-acting hydraulic cylinder 133 forms oil inlets 133b at both sides of the cylinder 133c in which the piston 133a is located, and alternately supplies and discharges oil to discharge the piston 133a into the cylinder. A device for reciprocating within 133c.

The piston rod 133d is coupled to one of the support members 131-2 of the pair of support members 131-1 and 131-2, and is fixed to the cylinder to the other support member 131-1. The rod 133e is coupled.

The piston rod 133d is coupled to the piston 133a to reciprocate like the piston 133a.

Here, reference numeral l denotes the total length of the double-acting hydraulic cylinder 133, that is, the distance between the end of the rod 133e and the end of the piston rod 133d.

If the double-acting hydraulic cylinder 133 is reversely operated (reverse operation refers to an operation of moving the piston 133a so that the total length l of the double-acting hydraulic cylinder 133 is reduced.), The double-acting hydraulic cylinder 133 is operated. The overall length of l is reduced, thereby pulling the dividing walls 113-1 and 113-2 on both sides.

Pulling the split walls 113-1 and 113-2 on both sides opens the body joint portion 110a of the free end.

On the contrary, when the double acting hydraulic cylinder 133 is moved forward (forward acting refers to the operation of moving the piston 133a so that the total length l of the double acting hydraulic cylinder 133 is increased), the double acting hydraulic cylinder 133 ), The total length (l) is increased, and both the partition walls (113-1, 113-2) are pushed out.

When the two partition walls 113-1 and 113-2 are pushed out, the open body joint part 110a is closed.

5B is a perspective view illustrating the other side of the caisson for working in the underwater structure of FIG. 1, and FIG. 7 is an enlarged cross-sectional view of the shift preventing device of FIG. 5B.

Referring to FIGS. 5B and 7, the shift prevention device 140 is further added by the body opening and closing device 130 to prevent the divided bodies 110-1 and 110-2 from coming in contact with each other. It is preferable.

The shift prevention device 140 is provided on the outside of the joint portion 110a between the split bodies 110-1 and 110-2 based on the center of the bottom body 111, and is coupled to each other in an uneven form, the body hinge part 120 and the body opening and closing device 130 are provided on opposite partition walls 113-1 and 113-2.

The shift prevention device 140 is preferably tapered or rounded corner portions that are coupled to each other in a concave-convex shape. When the tapered or rounded corners are formed, the shift can be naturally adjusted.

As shown in FIG. 1, the body 110 preferably has a drain pump 400 fixedly discharging water in the body 110 to the outside, and a drain pump hose connected to the drain pump 400 ( 420 is also provided.

Here, the drain pump 400 has been described as being fixed in the body 110, but of course, the drain pump 400 can also be brought and used from the outside.

In addition, the movable footrest 410 is provided in the body 110 to allow a worker to work conveniently.

Referring to FIGS. 1 and 2, one end is fixed to the wall 113 and the other end is in contact with the steel pipe pile 730 to maintain a gap between the wall 113 and the steel pipe pile 730 to maintain a constant interval. It is preferable that the apparatus 500 be provided in plurality.

Generally, a screw jack may be used as the space keeping apparatus 500, and two split walls 113-1 and 113-2 may be provided at four radially four.

Here, there is no limitation on the number of the space keeping apparatus 500 and the installed position.

8 is an enlarged cross-sectional view of the height-adjusting hydraulic cylinder of FIG.

When the distance between the portion to be performed for the slab 710 and the steel pipe pile 730 is relatively close, that is, when the distance from the lower portion of the slab 710 to the position where the caisson 100 is installed, the slab ( 710, the height adjustment hydraulic cylinder 300 for adjusting the distance from the bottom to the position where the caisson 100 is installed may be provided.

1 and 2, one end of the height adjusting hydraulic cylinder 300 is fixed to the body 110 and the other end is in contact with the slab 710.

It is preferable that the height-adjusting hydraulic cylinder 300 is provided in plural, and a total of four may be provided at the top of each of the dividing walls 113-1 and 113-2.

Height-adjusting hydraulic cylinder 300 is preferably a double-acting hydraulic cylinder described in the above-mentioned body opening and closing device 130, when the height-adjusting hydraulic cylinder 300 is a double-acting hydraulic cylinder to operate the height-adjusting hydraulic cylinder (300) The piston moves in the direction of increasing the overall length.

The operation of the double-acting hydraulic cylinder will be referred to the description of the body opening and closing device 130, and detailed description thereof will be omitted.

As shown in FIG. 8, a shock absorber 310 is fixed to a portion of the height adjusting hydraulic cylinder 300 that is in contact with the slab 710 to mitigate an impact when the bottom of the slab 710 is in contact with the slab 710. Can be. This shock absorber 310 is preferably made of wood.

FIG. 9 is a cross-sectional view illustrating a state in which a caisson for underwater structure work according to another embodiment of the present invention is installed in an underwater structure, FIG. 10 is a plan view of the pedestal of FIG. 9, and FIG. 11A is a bottom of the pedestal of FIG. 9. 11 is a schematic cross-sectional view showing the main part of the pedestal of FIG. 11A.

Referring to FIG. 9, when the distance between the slab 710 and the portion of the steel pipe pile 730 is to be performed, the shangdong for the steel pipe pile 730 of the body 110 can be suppressed. It is preferred that a pair of pedestals 200 and a pedestal opening and closing device 230 for opening and closing the pedestal 200 are added.

Referring to FIG. 10, the pedestal 200 consisting of a pair of split pedestals 200-1 and 200-2 is provided with a structure fixing hole 212 through which the steel pipe pile 730 penetrates, and one joint portion. (200b) is hinged by the pedestal hinge portion 220 provided in the lower portion of the body 110 to form a structure that can be opened and closed with respect to the steel pipe pile (730).

The pedestal hinge 220 connects the arms 121 and the arms 121 fixed to the pair of pedestals 200-1 and 200-2, respectively, and protrudes vertically through the pedestal hinge 220. It includes a hinge axis 223.

As shown in FIGS. 11A and 11B, a fixing plate 240a is fixed to a lower surface of any divided bottom body 111-2 of the bottom body 111, and a hinge shaft 223 protruding from the fixing plate 240a. ) Is fixed.

One end of the hinge shaft 223 protruding through the arm 121 of the pedestal hinge portion 220 is supported by the fixing plate 240b again.

Pedestal opening and closing device 230 is provided on the outside of the pedestal hinge portion 220 on the basis of the structure fixing hole 212 to open and close the pedestal 200.

Pedestal opening and closing device 230 is preferably a double-acting hydraulic cylinder described in the above-mentioned body opening and closing device 130, the overall length of the pedestal opening and closing device 230 when the pedestal opening and closing device 230, which is a double-acting hydraulic cylinder to operate forward. The piston moves in the direction of stretching.

The operation of the double-acting hydraulic cylinder will be referred to the description of the body opening and closing device 130, and detailed description thereof will be omitted.

Furthermore, in order to adjust the buoyancy of the buoyancy tank 170, as shown in Figure 9, the buoyancy control pump 270 connected to the buoyancy tank 170 may be provided.

The buoyancy control pump 270 may adjust the buoyancy of the buoyancy tank 170 by introducing water into the buoyancy tank 170 or by discharging the water stored in the buoyancy tank 170 to the outside.

At this time, when the water is introduced into the buoyancy tank 170 by the buoyancy control pump 270 to allow the air in the buoyancy tank 170 to escape to the outside and when the stored water is discharged to the outside again to the buoyancy tank 170 A vent 280 is provided in communication with the buoyancy tank 170 to allow air to enter.

Hereinafter, the operation of this embodiment having the above-described configuration will be described.

<Example 1>

This will be described with reference to FIGS. 1 to 8.

The caisson 100 (hereinafter, referred to as caisson) for working on the underwater structure 700 of the present embodiment 1 is used to prevent corrosion of the splash and tidal portions of the steel pipe pile 730 among the underwater structure 700. In order to perform the operation on the file 730, it is moved to the position to be worked on.

At this time, the body 110 of the caisson 100 is provided with a buoyancy tank 170, and because it receives a certain buoyancy from the water is floating in the water can be located in the droplets and tidal portion of the steel pipe pile 730.

After the caisson 100 is moved to the working position, the body opening and closing device 130 is operated to open the split joint part 110a that forms a free end based on the body hinge part 120 (open).

The steel pipe pile 730 is placed in the structure through-hole 112 through the open split body joint part 110a, and then the body opening and closing device 130 is operated again to close the split body joint part 110a (close). ).

At this time, since the shift prevention device 140 is provided in the split bodies 110-1 and 110-2 on both sides of the split body joint part 110a which are closed, the pair of split bodies 110-1 and 110-2 are shifted from each other. Even if the contact is naturally because the uneven parts of the shift prevention device 140 are coupled to each other, each of the divided body (110-1, 110-2) is in contact with each other and fits perfectly without height.

After the split body junction 110a is in close contact with each other and closes, the drain pump 400 operates to discharge the water inside the body 110 to the outside.

When the water level inside the body 110 is lower than the water level outside the caisson 100 by operating the drainage pump 400 as described above, the caisson 100 receives force in the direction of the steel pipe pile 730 due to the external water pressure. 150 is compressed to the steel pipe pile 730 and the divided body (110-1, 110-2) to order the external water. This provides a dry environment in which the worker enters the body 110 to perform a work.

Thus, the subdivided bodies (110-1, 110-2) in the steel pipe pile 730 to be worked in order to perform the work on the steel pipe pile 730 of the underwater structure 700 and then inside the body 110 By draining the water to make the interior space of the body 110 into a dry environment, it is configured to allow the worker to enter the interior space of the body 110 of the dry environment to perform work on a three-dimensional surface rather than a plane. .

Meanwhile, when the distance between the lower surface of the slab 710 and the upper end of the wall 113 is relatively close, the height adjusting hydraulic cylinder 300 is moved forward so that the other end of the height adjusting hydraulic cylinder 300 contacts the lower surface of the slab 710. Let's do it.

If the other end of the height-adjusted hydraulic cylinder 300 continues to operate the height-adjusted hydraulic cylinder 300 while the other end is in contact with the lower surface of the slab 710, the height-adjusted hydraulic cylinder 300 moves in the opposite direction to the buoyancy force. By pushing 110, the distance between the lower surface of the slab 710 and the upper end of the wall 113 can be adjusted to accurately adjust the position where the caisson 100 is installed on the steel pipe pile 730.

Thus, the height adjustment hydraulic cylinder 300 is provided to lower the body 110 in the opposite direction of the buoyancy action can be installed in the correct position of the steel pipe pile 730 to simply work.

When the distance between the slab 710 and the upper end of the partition wall 113 described above is relatively close to move the body 110 in the opposite direction of the buoyancy by the force of the height-adjusting hydraulic cylinder 300 is operated. Say if you can.

Position the caisson 100 in the correct position and then operate the spacer 500 to contact one end of the spacer 500 to the steel pipe pile 730, the gap between the wall 113 and the steel pipe pile 730 Keep it constant.

As a result, even if the wall 110 receives a force from the outside by waves or the like, it is possible to maintain a constant interval between the wall 113 and the steel pipe pile 730 to help the operator to perform the work of the steel pipe pile 730.

Example 2

This will be described with reference to FIGS. 9 to 11.

The caisson 100 ′ (hereinafter, referred to as caisson) for working the underwater structure 700 of the second embodiment is moved to a position to work to perform a work on the steel pipe pile 730.

At this time, the body 110 of the caisson (100 ') is provided with a buoyancy tank 170, the bottom body 111 is floating in the water because it receives a constant buoyancy from the water, so the steel pipe pile 730 in the splash stand and tidal portion Can be located.

When the distance between the parts to be performed for the slab 710 and the steel pipe pile 730 is far, the buoyancy control pump 270 is operated to introduce water into the buoyancy tank 170, so that the body 110 is properly buoyant. To have.

Thus, if the buoyancy of the body 110 is properly adjusted, the depth of the body 110 is submerged in water, so that the caisson 100 'can be accurately adjusted to the steel pipe pile 730.

The buoyancy control pump 270 is provided so that the caisson 100 'can be adjusted and installed at a more accurate position of the steel pipe pile 730 to be worked.

When the distance between the slab 710 and the upper end of the dividing wall 113 described above is far the buoyancy force acting on the body 110 by the force to operate the height-adjusted hydraulic cylinder 300 described in the first embodiment It means that it cannot move in the opposite direction.

After adjusting the distance between the lower surface of the slab 710 and the top of the wall 113, the body 110 is installed at the correct position of the steel pipe pile 730 to be worked on, and then the body opening and closing device 130 is moved forward and divided. Open the body junction (110a).

The steel pipe pile 730 is placed in the structure through-hole 112 through the split body joint part 110a opened in this manner, and then the body opening and closing device 130 is operated backward to close the split body joint part 110a. give.

After closing the split body joint portion 110a and draining all the water in the body 110 with the drain pump 400, the order packing 150 is compressed and the external water is ordered by the compressed order packing 150. Inside the body 110 is provided a dry environment in which the worker can enter and perform work.

When the water in the body 110 is drained by the drain pump 400, the order packing 150 is compressed and the water is filled by the compressed order packing 150 to be opened by the pedestal opening and closing device 230. After the outer circumferential surface of the steel pipe pile 730 is in contact with the junction portion 200a, the pedestal opening and closing device 230 is operated backward to close the opened pedestal junction portion 200a.

When the pedestal 200 is forcibly fixed to the outer circumferential surface of the steel pipe pile 730, the body 110 may be fixed to the steel pipe pile since the vertical flow of the body 110 is prevented.

Since the operation of the other components of the configuration of the second embodiment is the same as the first embodiment described above, the first embodiment will be referred to, and a detailed description thereof will be omitted.

The caisson for underwater structure work according to a preferred embodiment of the present invention is not limited to the maintenance work of the steel pipe pile, but the cutting, replacement, welding, removal of anodized film, painting and reinforcement of concrete structures, etc. Can be used in a variety of underwater work, the caisson for working underwater structures of the present invention will be able to use a variety of applications by those skilled in the art.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below Or it may be modified.

According to the caisson for aquatic structure work according to the present invention as described above, assembling the split body to the steel pipe pile portion to work to perform the work on the steel pipe pile of the underwater structure and then drain the water inside the body to the internal space of the body By making it into a dry environment, it is configured to allow a worker to enter a space inside the body of a dry environment and perform work on a three-dimensional surface instead of a plane.

In addition, by lowering the body in the opposite direction of the buoyancy action is provided with a device for adjusting the distance between the lower slab and the top of the wall can be installed in the exact position of the steel pipe pile to be worked in a simple way.

Furthermore, since the shift prevention device is provided, even if the pair of split bodies are in contact with each other, the uneven parts of the shift prevention device are naturally coupled, so that the split bodies can be exactly in contact with each other.

In addition, the gap between the wall and the steel pipe pile is provided to maintain a constant interval, so that even if the caisson is subjected to external forces by waves, etc. can maintain the internal space of the caisson constant convenience of the operator performing the work of the steel pipe pile Can help.

In addition, the order packing may be detachable to the body, so if the order packing is worn out due to long-term use can be used to replace the new order packing.

Claims (11)

In the underwater structure consisting of a slab and a steel pipe pile for supporting the lower part of the slab, the caisson for underwater structure work for performing the work on the steel pipe pile, The divided pipe bottom is formed, including a bottom body and a wall extending from the outer periphery of the bottom body through which the steel pipe pile is formed, the bottom body and the wall is cut while passing through the structure through hole A body divided into at least two divided bodies comprising a sieve and a divided wall; An order packing fixed to the body along a joint between the split bodies and a joint between the bottom body and the steel pipe pile; A caisson for underwater structure work comprising a; buoyancy tank provided on the body to receive the buoyancy. The method of claim 1, One junction of the junctions of the divided bodies forms a free end, The remaining joints of the joints of the divided bodies are hinged and fixed to each other by the body hinges provided on the outside of the joint between the divided body with respect to the center of the bottom body caisson for work . The method of claim 2, At least one body opening and closing device for opening and closing the divided bodies on the outside of the body hinge portion with respect to the center of the bottom body is provided caisson for work. The method of claim 3, wherein A structure fixing hole is formed through which the steel pipe pile penetrates. A pair of pedestals hinged by one pedestal hinge portion provided at a lower portion of the body to form an openable structure with respect to the steel pipe pile; A pedestal opening and closing device provided on the outside of the pedestal hinge portion based on the structure fixing hole to open and close the pedestal; And the pedestal opening and closing device closes the pedestal, thereby inhibiting movement of the steel pipe pile of the body. The method of claim 4, wherein In order to adjust the buoyancy of the buoyancy tank, And a buoyancy control pump connected to the buoyancy tank to introduce water into the buoyancy tank or discharge the water stored in the buoyancy tank to the outside. The method of claim 3, wherein One end is fixed to the body and the other end is in contact with the slab height adjustment hydraulic cylinder for adjusting the distance between the body and the slab is provided with a plurality of caisson for working in the water structure. The method according to any one of claims 1 to 6, The order packing is a caisson for underwater structure work, characterized in that detachably coupled to the junction. The method according to any one of claims 1 to 6, Under the center of the bottom body on the outer side of the joint between the split body when the joint between the split body to prevent the gap between the split body to prevent the deviation between the coupling device is characterized in that the water is added Caisson for construction work. The method according to any one of claims 1 to 6, The caisson for underwater structure work, characterized in that the drainage pump is fixed to the inside of the body to discharge the water in the body to the outside. The method according to any one of claims 1 to 6, One end fixed to the wall and the other end is in contact with the steel pipe pile is provided with a plurality of interval maintaining device for maintaining a constant gap between the wall and the steel pipe pile caisson for underwater structure. delete

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