KR20110037778A - Built-up type temporary cofferdam - Google Patents

Abstract

PURPOSE: A prefabricated cofferdam is provided to facilitate assembly and the adjustment of the area of a work space since the prefabricated cofferdam is assembled on the water and then is put underwater. CONSTITUTION: A prefabricated cofferdam comprises a main body(110), a buoyancy adjustment tank(140), a unit water shield(100), and a bonding unit(200). The main body comprises an internal space. The buoyancy adjustment tank comprises a water storage space and first and second through-holes. The water storage space accepts the water for controlling the buoyancy. The first and the second through-holes discharge the water to the water storage space. The unit water shield comprises first and second opening/closing valves. The first and second opening/closing valves are installed in the buoyancy adjustment tank in order to open and close the first and second through-holes. The bonding unit couples the unit water shields with each other. The bonding unit comprises a sealing member(210). The sealing member comprises a form-fixing unit and a coating unit.

Description

Prefab Closure {Built-up type temporary cofferdam}

The present invention relates to a prefabricated clamshell, and more particularly, to a prefabricated clamshell that can be assembled on the water surface to minimize the risk and difficulty of work due to underwater work.

In general, underwater constructions that are installed upright from the bottom of the water, such as bridges, breakwaters, dams, etc., are usually constructed of special concrete that is water and flame resistant.

However, these underwater structures are always in contact with water, so the phenomenon such as corrosion and dropping frequently appear, especially in the case of underwater constructions installed in a high speed flow rate is further intensified damage and corrosion.

In order to repair the underwater structures, the working environment of the atmospheric environment where people and equipment can be accommodated must be created in the water. The simplest is to open the gate to expose all the stored water and then repair and repair it. Proceed. However, considering the reality of Korea, which is one of the nations lacking water, there is a problem of waste of precious water, and it is impossible to implement in places where water cannot be completely removed, such as rivers and seas.

Therefore, a water barrier structure is installed that can be installed upright from the bottom of the water to enclose the underwater construction or provide a work space for the worker to repair with the one side wall of the underwater construction. By draining the water, a work environment is created where workers can enter and work.

However, in the related art, because the prefabricated clamshell has to be stored in water, it has to be formed of a material having a higher specific gravity than water, and thus it is not easy to transport. There was a problem such as losing, the safety of work.

The present invention was created in order to solve the above problems, by assembling on the surface of the prefabricated façade that is easy to assemble and can easily adjust the area of the work space formed through the water barrier as needed to be stored in the water The purpose is to provide.

The prefabricated clamshell according to the present invention for achieving the above object is a main body having a predetermined inner space with the front open, and can be installed in the inner space and the main body is submerged in water or stored in a predetermined depth. A buoyancy control tank is provided to accommodate water so that buoyancy can be adjusted, and buoyancy control tanks having first and second through-holes formed at one side and the other side to allow water to flow into and out of the reservoir, respectively, A unit membrane including the first and second opening / closing valves installed in the buoyancy control tank to open and close the first and second through holes, and mutually coupling the unit membrane with the adjacent unit membranes in the lateral and vertical directions. Coupling means is provided.

The body may be coupled to achieve a predetermined curvature along the lateral direction, the length of the top and bottom of the front surface is formed relatively shorter than the length of the top and bottom of the rear surface, the coupling means is a coupling portion between the body It further includes a sealing member fastened between the main body to prevent leakage through, the sealing member is formed of a flexible material to enable the elastic deformation while wrapping the outside of the mold fixing portion to maintain the shape, and the mold fixing portion It is preferable to include a coating to be.

The sealing member is inclined at a predetermined angle to connect the main body to one side and the other side coupled to each side of the main body to be connected to each other to achieve a predetermined curvature so that the mutual separation distance is farther away from the front end to the rear end It may be formed so as to, and when the unit block is buoyant in water, the lower end of the unit block may be further provided with a weight member mounted to the lower side of the buoyancy control tank so that it can be floated in the water in a state facing downward. .

In addition, to adjust the angle of inclination at the connection point of the main body is further provided with an angle adjustment connecting means for connecting the sealing members so as to be connected between the two or more sealing members to be fastened between the main body, the angle adjustment The connecting means is formed of an elastic material so as to be elastically deformable, and is provided between the sealing members to be connected to each other and the contact plate in contact with the side of the sealing member, the longitudinal direction of the contact plate in front of the contact plate A front end plate formed to extend in a direction intersecting with the front end and in contact with a front end surface of the sealing members connected to each other, and having a first insertion protrusion formed in a first insertion groove formed to be drawn inwardly into the front end surface of the sealing member; At the rear end of the contact plate and crosses the longitudinal direction of the contact plate; It may include a rear end plate formed to extend along the direction and in contact with the rear end surfaces of the sealing members are connected to each other, the second insertion protrusion is formed in the second insertion groove formed to be introduced into the rear end surface of the sealing member inwardly. have.

Prefabricated clamshell according to the present invention can be assembled and installed without diving in the water can shorten the construction time, there is an advantage to increase the work safety.

Hereinafter, with reference to the accompanying drawings will be described in more detail the prefabricated clamshell according to the present invention.

1 to 3 show a first embodiment of the prefabricated temporary closure 10 according to the present invention.

As shown in FIG. 1, the prefabricated temporary seal 10 is to provide a work space by combining the unit blocks 100 laterally and vertically through the coupling means 200. It is installed to surround the pier (1) for the repair of the form that prevents the river water flow into the work space.

The prefabricated clamshell 10 of the present invention may be formed so as to be provided in the form of an arch to the side of the structure having a continuous surface, such as a breakwater or a beam, to provide a workspace, unlike the present embodiment.

And it is preferable to increase the resistance to the pressure of the water by combining the prefabricated seal film 10 to have a curvature as shown.

2 and 3, the prefabricated temporary seal 10 includes a unit block 100 and a coupling means 200 for stacking the unit block 100 in the lateral and vertical directions.

The unit barrier 100 includes a main body 110 and a buoyancy control tank 140 mounted inside the main body 110, and the main body 110 has a predetermined inner space 111 and the front surface thereof is opened. In this case, the inner space 111 is formed to be exposed to the front.

The main body 110 is assembled to each other by fastening the other main body 110 on both sides and the upper and lower surfaces, to form a prefabricated temporary shield 10, so as to have a predetermined curvature to increase the resistance to water pressure. Are mutually coupled.

That is, the main body 110 has a rectangular pillar shape of a trapezoidal cross section in which the length of the upper and lower ends of the front surface is formed to be relatively shorter than the length of the upper and lower ends of the rear surface. Therefore, when the main body 110 is coupled to contact the sides, the connection is made in a state inclined to a predetermined angle, the coupling is made in the form of an arch as a whole.

Both sides of the main body 110 are formed with a first coupling hole 120 penetrating the outer circumferential surface and the inner circumferential surface, and second coupling holes 130 penetrating the outer circumferential surface and the inner circumferential surface are formed on the upper and lower surfaces of the main body 110. This is to install the fastening bolt 220 for coupling the main body 110 to each other.

Buoyancy control tank 140 is for adjusting the buoyancy of the main body 110, is installed to be supported by the support frame 112 in the inner space 111 of the main body 110.

The buoyancy control tank 140 is formed with a reservoir space 141 for storing water, and the first and second through holes 142 and 143 are provided on the upper and lower surfaces thereof to allow the inflow and outflow of water, respectively. The buoyancy control tank 140 is provided with first and second open / close valves 150 and 160 to selectively open and close the first and second through holes 142 and 143.

The buoyancy of the main body 110 is adjusted by filling the buoyancy control tank 140 with water. When the buoyancy control tank 140 is empty, only a part of the main body 110 is submerged in water, and the state is floating on the water as a whole. Can be maintained. And as the water is filled in the buoyancy control tank 140, the main body 110 is stored underwater.

Therefore, when the unit membranes 100 are connected to each other, the first and second open / close valves 150 and 160 are floated in water and the side and top and bottom surfaces of the main body 110 are fastened to the adjacent main body 110, and then the first The second on / off valves 150 and 160 are opened to allow water to be filled into the housing. At this time, water is introduced through the second through hole 143, and air filled in the housing is discharged from the first through hole 142.

When the main body 110 is submerged to the required depth, the first and second open / close valves 150 and 160 are closed to maintain buoyancy, and the new main body 110 is fastened to the upper side.

Coupling means 200 is to unite the unit membranes 100 to each other, the sealing member 210 mounted between the main body 110 to be interconnected, and the first coupling holes 120 or the second coupling hole The fastening bolt 220 is inserted through the 130, and the fastening nut 230 is screwed with the fastening bolt 220.

Sealing member 210 is to prevent the leakage occurs through the connection between the body 110, the mold fixing part 211 to maintain the shape, and is coated to surround the outer peripheral surface of the mold fixing part 211 The coating part 212 is included.

The mold fixing portion 211 is formed of an iron plate, and maintains the overall shape of the sealing member 210. In the present embodiment, the mold fixing portion 211 is made of iron plate, in addition to this may be formed of stainless steel or other alloys, it may be formed of a synthetic resin material.

The coating part 212 is coated to surround the mold fixing part 211 as a stretchable synthetic resin material to enable elastic deformation. The coating part 212 is in close contact with the side or top and bottom of the body 110 to block the leakage through the coupling portion of the body (110).

Sealing member 210 is formed with a plurality of fastening holes 213 penetrating both sides. The fastening hole 213 is formed to correspond to the first coupling hole 120 or the second coupling hole 130 so that the fastening bolt 220 is the first coupling hole 120 or the second coupling hole 130. And it is inserted through the fastening hole 213 and the fastening nut 230 is screwed to its end to connect the main body 110.

The sealing member 210 is provided in the coupling portion of the side of the main body 110, and there are two types are installed in the coupling portion of the upper and lower surfaces of the main body 110, so as to correspond to the shape of the side or the upper and lower surfaces of the main body 110 Since it is only slightly different form, the basic configuration is the same.

As described above, since the lengths of the front and rear surfaces of the main body 110 are different from each other, the side surfaces of the main body 110 are inclined inwardly rather than at right angles with respect to the rear of the main body 110. Because it is connected to the final assembled prefabricated clam 10 is formed in a cylindrical or arched form, thereby increasing the resistance to water pressure.

In addition, since the main body 110 is firmly coupled to each other by the sealing member 210, it is possible to minimize the risk of leakage through the connecting portion of the main body 110.

4 illustrates another embodiment of the unit barrier 300.

The main body 310 of the present embodiment is formed in plural so that the embossing protrusions 320 protruding to the outside on the side and top and bottom, respectively, extending in the longitudinal direction.

When the sealing member 210 comes into contact with the upper and lower surfaces or the side surfaces of the main body 310 by the embossing protrusion 320, the extension length between the front end and the rear end of the main body 310 becomes long, thereby further reducing the risk of leakage. Can be.

And the weight member 340 is mounted to the lower portion of the buoyancy control tank 330 of this embodiment.

The weight member 340 is to maintain the direction of the unit membrane 300 so that the operator can easily work when the unit membrane 300 is floated in the water for the installation of the prefabricated temporary membrane (10).

Since the center of gravity of the entire unit membrane 300 is positioned below by the weight member 340, when the unit membrane 300 is floated in water, the lower portion of the unit membrane 300 having the weight member 340 is installed. It will remain raised to face downward.

5 shows another embodiment of the sealing member 400.

The sealing member 400 of the present embodiment guides the main body to be coupled in a state inclined by a predetermined angle by the sealing member 400 when the main body is connected.

In the above embodiment, the side of the main body 110 is connected to the inclined state so that the overall shape of the prefabricated temporary shield 10 formed by the combination of the main bodies 110 may be arcuate or cylindrical, in which case the main body ( It may not be easy to manufacture the 110 with the side inclined.

Therefore, the sealing member 400 of the present embodiment guides the main body to be connected in an inclined state by the sealing member 400 even when the side surface of the main body is formed to extend in a direction perpendicular to the rear surface.

The sealing member 400 is formed in a fan shape in which the separation distance between both sides gradually increases as it extends from the front end to the rear end, and the mold fixing part 420 made of an iron plate and the coating part 430 surrounding the mold fixing part 420. ). The sealing member 400 also has a fastening hole 410 is formed so that the fastening bolt 220 can pass through.

6 and 7 show the connecting means for adjusting the angle 530 formed to be installed between the main body 110 by connecting a plurality of sealing members (500).

The connection means for adjusting the angle 530 is to adjust the connection angle of the main body 110 to be connected at the time of coupling the main body 110 by connecting a plurality of sealing members 500.

If the working space is not required a lot, it is preferable to make the connection angle of the main body 110 close to the vertical to form a cylindrical or arcuate structure even using a small amount of the unit membrane (100).

A plurality of first insertion grooves 521 are spaced apart from each other in the vertical direction at the front of the sealing member 500 so that the sealing members 500 may be connected by the angle adjusting connecting means 530. A plurality of second insertion grooves 522 are spaced apart from each other in the vertical direction on both sides.

The connection means for adjusting the angle 530 is formed of an elastic material to enable elastic deformation, the contact plate 531 is installed between the sealing members 500 are interconnected to contact the side of the sealing member 500 And a sealing member connected to the front end surface of the sealing members 500 which are formed to extend in a direction crossing the longitudinal direction of the contact plate 531 at the front end of the contact plate 531 and are connected to each other. A front plate 533 formed with two first insertion protrusions 535 respectively fitted into the first insertion grooves 521 of the 500, and the longitudinal direction of the contact plate 531 at the rear end of the contact plate 531 A rear end plate 534 which is formed to extend in a direction intersecting with the rear end surfaces of the sealing members 500 to be connected to each other, and has a second insertion protrusion 536 fitted into the second insertion groove 522. It includes.

After the front plate 533 is in close contact with the front surface of the sealing member 500 so that the first insertion protrusion 535 is fitted into the first insertion grooves 521, the rear end plate 534 is pulled backward. Side surfaces of the sealing members 500 are in contact with the contact plate 531. When the back end plate 534 is released and the length of the contact plate 531 is returned to its initial state, the second insertion protrusion 536 is fitted into the second insertion grooves 522 of the sealing members 500 to which the sealing member ( 500) are interconnected.

The sealing member 500 of the present embodiment is formed in the form of a long hole in which the fastening hole 510 extends in the front-rear direction, and the through-hole 532 of the same shape is formed in the contact plate 531, so that the fastening bolt ( 220 extends through it to connect the main body 110 and the sealing member 210.

In FIG. 7, only the two sealing members 500 are coupled to each other. However, as shown in FIG. 6, three or more sealing members 500 are continuously connected by the angle adjusting connecting means 530. It may be installed, the more the number of connections of the sealing member 500, the connection angle at the time of connection of the main body 110 is closer to the vertical.

The installation process of the prefabricated temporary shield 10 according to the present invention is as follows.

First, in the state of floating the plurality of unit membranes (100) in the water, the worker connects them laterally to form a connection of one stage.

Open the first and second on-off valves 150 and 160 of the buoyancy control tanks 140 formed in the connected main bodies 110 to fill the water reservoir 141 with a predetermined amount of water so that the unit membrane 100 is downward. After sinking a predetermined depth, the other unit film 100 is connected to the upper side to form a two-stage connecting body.

Thus, the main body 110 is sequentially connected, and by filling the buoyancy control tanks 140 of the connected main bodies 110 with water, the main bodies 110 are stacked and partitioned until the lowermost connections reach the bottom surface. When the space is formed and the water inside the space partitioned by the prefabricated temporary film 10 is pumped out through the pump, a workspace without water is formed.

After the work is finished, the first and second open / close valves 150 and 160 are opened to discharge water inside the buoyancy control tank 140, and the connected bodies 110 are separated to release the coupling.

Thus, the prefabricated clamshell 10 according to the present invention can be connected on the surface of the water without engaging in the submerged state can lower the risk of safety accidents due to diving, construction can be made quickly.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is a use state diagram showing a state in which the prefabricated clamshell according to the present invention is installed to be used for repair of the piers,

Figure 2 is a partially cut perspective view showing an embodiment of the prefabricated clamshell according to the present invention,

3 is a perspective view illustrating a coupling process of the prefabricated temporary film of FIG.

4 is a perspective view showing another embodiment of the prefabricated clamshell,

5 is a perspective view showing another embodiment of a sealing member;

6 and 7 are a perspective view and a cross-sectional view showing a coupling means including an angle adjusting connecting means capable of connecting the sealing members.

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

10; Prefab Closure

100; Unit water barrier

110; main body

140; Buoyancy Control Tank

200; Joining means

210; Sealing member

Claims (6)

A main body having a predetermined inner space with an open front surface; It is installed in the inner space and is provided with a storage space for accommodating water to adjust the buoyancy so that the body is submerged in water or stored in a predetermined depth, and the storage space on one side and the other side, respectively A buoyancy control tank having first and second through holes formed therein to allow water to flow in and out; And a unit block including: first and second on / off valves installed in the buoyancy control tank to open and close the first and second through holes. And a coupling means for coupling the unit membranes to adjacent unit membranes in the lateral and vertical directions. The method of claim 1, The main body is a prefabricated clam, characterized in that the length of the top and bottom of the front is formed relatively shorter than the length of the top and bottom of the rear so that it can be combined to achieve a predetermined curvature along the lateral direction. The method of claim 1, The coupling means further includes a sealing member fastened between the main bodies to prevent leakage through the coupling portions between the main bodies, The sealing member is a prefabricated clam film, characterized in that it comprises a mold for fixing the shape, and a coating portion formed of a flexible material to surround the outside of the mold fixing and elastic deformation. The method of claim 3, wherein The sealing member is inclined at a predetermined angle to connect the main body to one side and the other side coupled to each side of the main body to be connected to each other to achieve a predetermined curvature so that the mutual separation distance is farther away from the front end to the rear end A prefabricated temporary film, characterized in that the fork is formed. The method of claim 1, When the unit block is suspended in water, the prefabricated clam further comprises a weight member mounted to the lower side of the buoyancy control tank so that the lower end of the unit block can be floated in the water in a downward direction. The method of claim 4, wherein It is further provided with an angle adjusting connecting means for connecting the sealing members to be connected between the two or more sealing members to adjust the inclination angle at the connection point of the main body between the main body, The angle control connecting means is formed of an elastic material to enable elastic deformation, the contact plate is installed between the interconnecting sealing members and in contact with the side of the sealing member, the contact plate in front of the contact plate A first insertion protrusion is formed to extend in a direction crossing the longitudinal direction of the first contacting surface, the first insertion protrusion is inserted into a first insertion groove formed to be inserted into the front end surface of the sealing member. A front plate and a rear end of the contact plate are formed to extend in a direction crossing the longitudinal direction of the contact plate to contact the rear end surfaces of the interconnecting sealing members, and are formed to be drawn inwardly into the rear end surface of the sealing member. It includes a rear end plate formed with a second insertion protrusion fitted in the second insertion groove Prefabricated drought, characterized in the film.

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