KR101324365B1 - Flange for Underwater Concrete Casting and Method for Underwater Concrete Casting Thereof - Google Patents

Abstract

The present invention is a concrete hopper; In the flange of the underwater concrete placing device consisting of; Tremi tube provided on one side of the lower end of the hopper to provide a path for the concrete injected into the hopper, the flange is provided at the connection portion of the hopper and the tremi tube, A flat plate having a diameter relatively smaller than the inner diameter of the flat plate; A plurality of rubber plates provided along an outer circumferential surface of the flat plate to block a space between an inner diameter of the tremi tube and an outer diameter of the flat plate; And a support provided on one side of the center of the flat plate and having a fixing ring at the upper end thereof, wherein the underwater concrete placing apparatus and the underwater concrete placing method using the same are implemented. There is an effect that can be easily released. As a result, the concrete inlet of the treme tube is simultaneously opened, so that the concrete that has been injected into the hopper can be introduced into the treme tube at once. In addition, the flange blocks the contact between the concrete and the water, and the concrete flows into the tremi tube at once, so even if high water pressure occurs, the concrete is injected while rapidly pushing out the water remaining inside the tremi tube due to the high load of the concrete to separate the material. There is an effect that can be prevented.

Description

Flange for Underwater Concrete Casting and Method for Underwater Concrete Casting Thereof}

The present invention relates to a flange for an underwater concrete placing apparatus and a method for placing an underwater concrete using the same. More specifically, concrete is separated by water remaining in a trem tube during pouring concrete to form a pile-like structure in water. The present invention relates to a flange for an underwater concrete placing apparatus capable of preventing concrete, and easily pouring concrete without removing the flange, and an underwater concrete placing method using the same.

In general, the Tremie method is used in one of several ways when placing underwater concrete. The tremi method is a method in which the tremi tube is connected to the lower part of the hopper so that the concrete injected into the hopper is injected into the tremi tube so that the concrete is poured on the lower side of the water.

In the Tremi method, in order to prevent the occurrence of material separation due to the mixing of water concrete, which is going down the tremi tube at the beginning, the water inside the tremi tube must be pushed down sufficiently, but if the water level is high, concrete or mortar There is a problem that can not be quickly lowered to the bottom of the tremi tube. For this reason, the water existing in the tremic tube flows back to the surface side, or there is a problem in that the construction of materials such as pillars is poor due to discontinuous pouring.

In order to solve this problem, an apparatus for injecting a large amount of concrete into the tremi tube at one time by opening the opening and closing part after the opening of the opening and closing part in the concrete inlet on one side of the concrete inlet of the tremi tube. However, this conventional technology has a problem that the opening of the opening and closing part is difficult due to the load of the concrete flowed into the hopper, and if the opening is not made in a moment, the concrete flows a little as the opening of the opening and closing the material separation, discontinuous There is still a problem in that the casting is done.

In order to solve this problem, a method using an elastic ball has been disclosed. This method introduces concrete after introducing elastic balls or styrofoam into the tremis tube. Elastic balls or styrofoam separate water from concrete to prevent direct contact. Although this technique blocks direct contact with water, there is still a problem in that material separation of concrete, which occurs during the initial injection of concrete, still occurs. In addition, when the elastic ball or styrofoam is not discharged to the outside of the tremi tube, and remains inside the concrete, there is a problem in that a large void is formed at the lower end of the structure, resulting in poor construction.

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Therefore, the present invention has been created to solve the above problems, to prevent the concrete from being separated by the water remaining in the tremi pipe during pouring concrete to form a pile-like structure in water, and remove the flange It is an object of the present invention to provide a flange for an underwater concrete placing device that can be poured concrete easily without using the same, and an underwater concrete placing method using the same.

An object of the present invention as described above is a concrete hopper is injected; In the flange of the underwater concrete placing device consisting of; Tremi tube provided on one side of the lower end of the hopper to provide a path for the concrete injected into the hopper, the flange is provided at the connection portion of the hopper and the tremi tube, A flat plate having a diameter relatively smaller than the inner diameter of the flat plate; A plurality of rubber plates provided along an outer circumferential surface of the flat plate to block a space between an inner diameter of the tremi tube and an outer diameter of the flat plate; And a support provided on one side of the center of the flat plate and having a fixing ring at the upper end thereof.

At this time, the flat plate portion is composed of a lower plate portion and an upper plate portion formed in a shape corresponding to each other, the rubber plate is sandwiched between the lower plate portion and the upper plate portion.

In addition, the lower plate portion and the upper plate portion are formed with a plurality of serrated projections vertically on one side edge portion facing each other.

In addition, the rubber plate is provided so that the rubber plates adjacent to each other overlap each other in order to prevent the concrete introduced into the hopper arbitrarily introduced into the tremi tube.

In addition, the flange is supported by a connecting member connected to the upper one side of the hopper or one side of the wire supporting the hopper.

In addition, the connecting member is any one of a wire, a wire, or a copper wire.

In another category, an object of the present invention is to provide an underwater concrete placing method using the above-mentioned flange for underwater concrete placing apparatus, the first step of fixing the hopper and tremi tube to the position to place the concrete; A second step of positioning and fixing a flange at one side of the connection portion between the hopper and the treme tube so as to block the treme tube; A third step of injecting concrete into the interior of the hopper; A fourth step of releasing the fixing of the flange; And a fifth step in which the flange pushes down the water inside the treme tube and descends with the concrete and the concrete is filled in the inner lower portion of the treme tube without separating the material. .

At this time, the flange is fixed in the second step by using a connecting member.

In addition, the fourth step releases the flange by removing the connecting member.

The method may further include a sixth step of continuously filling concrete into the hopper after the fifth step, thereby filling concrete in the tremi tube.

According to the present invention has an effect that can be easily released by a method of cutting the connection member for fixing the flange. As a result, the concrete inlet of the treme tube is simultaneously opened, so that the concrete that has been injected into the hopper can be introduced into the treme tube at once.

In addition, the flange blocks the contact between the concrete and the water, and the concrete flows into the trailing tube at once, and even if high water pressure occurs, the concrete is injected while rapidly pushing out the water remaining inside the trailing tube by the high load of the concrete, resulting in slime at the tip. At the same time there is an effect that can prevent the separation of the material.

In addition, there is no need to remove the flange lowered to the bottom of the tremy tube there is an easy operation. At this time, the flange made of a thin plate hardly generates voids in the interior of the concrete structure, the support has an effect that does not reduce the durability of the concrete structure by acting as a reinforcing bar.

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be interpreted.
1 is a partial cutaway perspective view of the underwater concrete pouring apparatus according to the present invention,
2 is a perspective view of a flange according to the present invention;
3 is a sectional view taken along the line AA in Fig. 2,
4 is a flow chart sequentially showing the underwater concrete pouring method according to the invention,
5 is a partial cutaway perspective view sequentially showing the underwater concrete pouring method according to the present invention.

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

<Configuration of underwater concrete pouring device>

1 is a partial cutaway perspective view of the underwater concrete pouring apparatus according to the present invention. Underwater concrete placing apparatus 10 according to the present invention is composed of a hopper 100, a tremble tube 200 and a flange 300, as shown in FIG.

Hopper 100 is a device that allows the concrete (C) to be easily injected into the tremi tube 200, this hopper 100 uses a hopper 100 commonly used in the art. At this time, although not shown in the drawings, a through hole for connecting a wire for fixing the hopper 100 to the position where the concrete (C) is to be injected, one side of the hopper 100 may be formed, such a hopper 100 Fixing method of may also be used a method commonly used in the art.

Tremi tube 200 is coupled to one side of the lower end of the hopper 100 is to provide a path through which the concrete (C) injected into the hopper 100 can be introduced into the water. The tremic tube 200 is made of a hollow cylindrical shape, may be integrally coupled to the lower end of the hopper 100 by welding, or may be fastened in the field through other fastening methods. This tremic tube 200 is also commonly used in the art, detailed description thereof will be omitted.

Figure 2 is a perspective view of the flange 300 according to the present invention, Figure 3 is a cross-sectional view A-A of FIG. The flange 300 is provided at a portion where the hopper 100 and the tremi tube 200 are connected to the inside of the hopper 100 so that the concrete C introduced into the hopper 100 is arbitrarily introduced into the tremi tube 200. When the connection is released and descends along the tremble pipe 200 with the concrete (C) and pushes the remaining water inside the tremble pipe 200, to prevent the material separation of the concrete (C) occurs Device. The flange 300 is composed of a flat plate 310, rubber plate 320 and the support 330.

The flat plate 310 serves to substantially block the entrance of the tremi tube 200, and the inner diameter of the tremi tube 200 to descend downward along the tremi tube 200 by the load of the concrete (C) More relatively smaller diameters. The plate 310 may be formed of one plate, but may also be formed of a lower plate 311 and an upper plate 312 to more strongly support the rubber plate 320. Forming the plate 310 by a single plate, or by forming two plates of the lower plate 311 and the upper plate 312 is the amount of concrete (C) that is put into the first hopper 100, installation environment, etc. It can be decided accordingly. At this time, the plate portion 310 is made of a metal material to withstand the load of the concrete (C).

The rubber plate 320 is provided along the outer circumferential surface of the flat plate part 310 to block spaces spaced between the outer circumferential surface of the flat plate part 310 and the inner circumferential surface of the treme tube 200 so that the concrete C may be arbitrarily selected. It is to prevent the inflow into. When the flat plate 310 is made of a single plate, the rubber plate 320 is provided along the outer circumferential surface of the flat plate 310 on the bottom surface of the flat plate 310 by using a coupling means such as an adhesive or a screw. If the plate portion 310 is formed of two plates of the lower plate portion 311 and the upper plate portion 312 is provided between the lower plate portion 311 and the upper plate portion 312, the end plate Like the flat plate 310 may be coupled through an adhesive or coupling means. At this time, a plurality of jagged protrusions are formed on the edge portions of one side surface of the lower plate portion 311 and the upper plate portion 312 that face each other, thereby compressing the rubber plate 320, thereby more firmly coupling the rubber plate 320. It can be done. The rubber plate 320 is provided so that the rubber (320) adjacent to each other overlap a predetermined interval in order to more reliably prevent the concrete (C) injected into the hopper 100 to be randomly introduced into the tremi tube (200).

Support 330 is a connection member 400 such as a wire, a wire or a copper wire for supporting the flange 300 is connected. The support 330 has a rod shape, and a fixing ring 331 for connecting the connection member 400 is provided at an upper end of the flat plate 310 that is firmly provided on one side of the flat plate 310 by welding or the like. . At this time, the support 330 is made of rebar.

<Underwater concrete pouring method>

Figure 4 is a flow chart sequentially showing the underwater concrete pouring method according to the present invention. First, as shown in Figure 4, in order to pour concrete (C) in the water to fix the hopper 100 and tremi tube 200 in the pouring position (S100). At this time, the upper side of the hopper 100 may be fixed to a crane or the like to fix its position, such a fixing method uses a method commonly used in the art.

Next, as shown in FIG. 1, the flange 300 is introduced into the concrete C of the tremi tube 200 at one side of the connection portion where the hopper 100 and the tremi tube 200 are connected to the inside of the hopper 100. Position and fix the block (S200). Fixed ring 331 connected to the upper end of the support 330 of the flange 300 and one side of the upper end of the hopper 100, one side of the crane for fixing the hopper 100 or one side of the wire connecting the crane with the hopper 100 The flange 300 is fixed by connecting to the connection member 400.

5 is a partial cutaway perspective view sequentially showing the underwater concrete pouring method according to the present invention. Next, as shown in Figure 5a, the concrete (C) is injected into the hopper (100) (S300). At this time, the concrete (C) is filled with the concrete (C) filled in the inside of the hopper 100 to have a load higher than the water pressure so as to push out the water remaining in the tremy tube (200).

Next, as shown in FIG. 5B, the fixing of the flange 300 is released (S400). Although shown in the drawing with scissors to express the release by the cutting of the connection member 400 for fixing the flange 300, according to the type of the connection member 400 is cut the connection member 400 using a variety of cutting devices To release the flange 300.

Next, as shown in FIG. 5C, while the flange 300 descends into the treme tube 200, the water remaining in the treme tube 200 is pushed out, whereby the concrete C is formed of a material. It is lowered along the Tremi tube 200 without separation (S500). As such, the flange 300 is easy to use because the rubber plate 320 of the elastic material is bent and descends together with the concrete C so that the flange 300 does not need to be separately removed.

Finally, by continuously supplying the concrete (C) to the hopper (100) by filling the concrete (C) in the interior of the tremi tube 200, to finish the underwater concrete pouring (S600).

As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: underwater concrete pouring device
100: Hopper
200: tremi tube
300: flange
310: plate part
311: lower plate part
312: upper plate
320: rubber plate
330 support
331: Fixed ring
400: connecting member
C: concrete

Claims (10)

Hopper 100 to which the concrete (C) is injected; Flange 300 for underwater concrete pouring device is provided on one side of the lower end of the hopper 100 provided with a trailing tube 200 to provide a path that can be delivered to the concrete (C) is introduced into the hopper (100) To
The flange 300 is provided at the connection portion of the hopper 100 and the tremi tube 200,
A flat plate portion 310 having a diameter relatively smaller than the inner diameter of the tremi tube 200;
A plurality of rubber plates 320 provided along an outer circumferential surface of the flat plate part 310 to block a space between an inner diameter of the treme tube 200 and an outer diameter of the flat plate part 310; And
It is provided on one side of the center of the flat plate 310, the support 330 is provided with a fixing ring 331 in the upper end;
The flat plate 310,
It consists of a lower plate portion 311 and the upper plate portion 312 formed in a shape corresponding to each other,
Flange for underwater concrete pouring apparatus, characterized in that the rubber plate 320 is sandwiched between the lower plate 311 and the upper plate 312. delete The method of claim 1,
The lower plate portion 311 and the upper plate portion 312 is a flange for underwater concrete pouring apparatus, characterized in that a plurality of serrated projections are formed vertically on one side edge portion facing each other. The method of claim 1,
The rubber plate 320 is provided to overlap the rubber plates 320 adjacent to each other in order to prevent the concrete (C) introduced into the hopper 100 to be arbitrarily introduced into the tremi tube (200). Flange for concrete pouring device. The method of claim 1,
The flange 300 is a flange for underwater concrete pouring apparatus, characterized in that supported by the connecting member 400 is connected to one side of the upper side of the hopper (100) or the wire for supporting the hopper (100). 6. The method of claim 5,
The connecting member 400 is a flange for underwater concrete pouring device, characterized in that any one of wire, wire or copper wire. In the underwater concrete pouring method using the flange 300 for underwater concrete placing apparatus according to any one of claims 1 and 3 to 6,
A first step (S100) of fixing the hopper 100 and the tremit tube 200 to the position where the concrete C is to be poured;
A second step (S200) of fixing the flange 300 to one side of the connection portion of the hopper 100 and the treme tube 200 to block the treme tube 200;
A third step (S300) of injecting concrete (C) into the hopper (100);
A fourth step (S400) of releasing the fixing of the flange (300); And
The fifth step (S500) in which the flange 300 pushes out the water in the tremi tube 200 and descends with the concrete (C), and the concrete (C) is filled without separating the material in the inner lower portion of the tremi tube (200). Underwater concrete pouring method comprising a. 8. The method of claim 7,
In the second step (S200), the flange 300 is underwater concrete pouring method, characterized in that for fixing by using a connecting member (400). The method of claim 8,
The fourth step (S400) is the underwater concrete pouring method, characterized in that to release the fixing of the flange (300) by removing the connection member (400). 8. The method of claim 7,
After the fifth step (S500) by continuously supplying the concrete (C) to the hopper 100 to fill the concrete (C) in the interior of the tremi tube (200) (S600); further comprising a Underwater concrete pouring method characterized in that.

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