Flood barrier wall using double airbag and construction method therefor

Abstract

The present invention provides a flood barrier wall using a double airbag and a construction method therefor, wherein a movable bag plate, a double airbag-type movable bag, a rubber hinge part, a movable plate, and a spacer are installed on bolts installed in foundation concrete. The movable plate can be automatically placed in an upright position by the double airbag-type movable bag in the event of a flood to immediately handle an overflow of water.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a flood barrier wall using a double airbag and a construction method therefor for preventing the overflow of water during flooding by using a double airbag-type movable bag.BACKGROUND ART

[0002] Embankments installed along urban rivers or along the coast serve the purpose of preventing river flooding and blocking the inflow of seawater, as well as creating waterfront spaces for nearby residents to rest and walk along. However, in the case of urban rivers, flood levels rise due to the inflow of soil and sediment over a long period of time, causing river flooding during the rainy season.

[0003] In order to prevent river overflow during flooding, an embankment may be built higher, but this incurs a huge cost for purchasing the land for embankment construction, so rather than raising the embankment, concrete flood walls are installed on the borders of urban rivers to reduce flood damage. However, although these concrete flood walls can prevent river overflow, they block access to the river and damage the landscape, making it impossible to create a waterfront space.

[0004] In order to solve these problems, a gate is installed along the embankment, wherein the gate remains laid horizontally, aligned with the embankment, under normal conditions so that they can be used as a pedestrian walkway without obstructing passage or access to the river. When there is a risk of river flooding or tidal waves, the gate is erected to increase the height of the embankment, thereby providing protection against flooding of the river.

[0005] As described above, in order to keep the gate laid down under normal conditions and to erect the gate when flooding is expected, buoyancy or hydraulic cylinders are used, and springs are employed to reduce loads associated with opening and closing the gate. However, even when the gate is laid under normal conditions, it is not possible to structurally expand the width of the embankment, nor is it possible to reduce loads applied to the gate when the gate is installed horizontally along the embankment.

[0006] Meanwhile, in order to solve these problems, Korean Patent No. 10-1849368 (hereinafter referred to as “Patent Document 1”) has been proposed.

[0007] Patent Document 1 discloses a gate that is coupled to a door frame installed on the upper side of the embankment facing the river, wherein the gate is erected vertically or laid down horizontally toward the river, and a synthetic wood deck is installed on the front surface of the gate. A rod bracket, to which a hydraulic cylinder is coupled, is provided on the upper rear side of the gate, and the hydraulic cylinder is coupled to a cylinder bracket of a support frame installed on the embankment at the lower rear side of the gate. An automatic support is hingedly coupled to the rod bracket of the gate, wherein the automatic support is configured to stand upright to surround the hydraulic cylinder when the gate is erected, and to rotate and support between the upper rear side of the gate and the embankment when the gate is laid down.DISCLOSURETechnical Problem

[0008] However, Patent Document 1 described above employs a structure in which the gate is operated by means of a hydraulic cylinder. The hydraulic cylinder is highly susceptible to damage or failure caused by wave forces generated during flooding, resulting in increased maintenance costs.

[0009] Moreover, in order to operate the gate, the hydraulic cylinder required for driving the gate must have a large capacity, which leads to an increase in manufacturing costs.Technical Solution

[0010] In order to the above-described problems, an objective of the present disclosure is to provide a flood barrier wall using a double airbag and a construction method therefor which may immediately respond to the overflow of water during flooding by automatically raising a movable plate by using a double airbag-type movable bag during the flood.

[0011] Another objective of the present disclosure is to arrange the movable bag toward a river, so that there are no hazards on the riverbank side, thereby preventing loss of life in the event that pedestrians are present during flooding, and even if wave forces occur, the double airbag-type movable bag not only absorbs the impact but also effectively prevents damage.

[0012] Another objective of the present disclosure is to apply the double airbag-type movable bag to realize the short length of a movable bag plate, which supports the movable bag during air injection into the movable bag, extending toward the river, thereby preventing a reduction in the flow cross-sectional area and avoiding interference with a river flow.

[0013] Another objective of the present disclosure is to prevent the malfunction of the movable bag due to damage or compression of the movable bag by the movable plate through a separation plate and a spacer.Advantageous Effects

[0014] According to the present disclosure, the double airbag-type movable bag is used to automatically erect the movable plate during flooding, thereby immediately responding to water overflow during flooding.

[0015] In addition, since the movable bag is arranged toward a river, there are no hazards on the riverbank side, thereby preventing loss of life in the event that pedestrians are present during flooding. Furthermore, even when wave forces occur, the double airbag-type movable bag not only absorbs the impact but also prevents damage.

[0016] Furthermore, by applying the double airbag-type movable bag, the length of the movable bag plate, which supports the movable bag during air injection into the movable bag, extending toward the river may be short, thereby preventing a reduction in the flow cross-sectional area and avoiding interference with a river flow.

[0017] Furthermore, the present disclosure is a useful invention that can prevent malfunction of the movable bag due to damage or compression of the movable bag by the movable plate through the separation plate and the spacer.DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a front view of a flood barrier wall using a double airbag according to the present disclosure.

[0019] FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1.

[0020] FIG. 3 is a plan view of FIG. 1.

[0021] FIG. 4 is an operational state view of the flood barrier wall using a double airbag according to the present disclosure.MODE FOR INVENTION

[0022] Hereinafter, the configuration of a flood barrier wall using a double airbag will be described in more detail with reference to the accompanying drawings.

[0023] The flood barrier wall of the present disclosure is coupled by bolts B coupled to foundation concrete C in a riverbank direction.

[0024] First, as shown in FIGS. 1 to 3, a movable bag plate 10 is fixedly coupled to the bolts B coupled to the upper side of the foundation concrete C, and is configured to extend horizontally toward a river.

[0025] The movable bag plate 10 may be made of various materials, but may be formed of a steel material resistant to impact, and may also be made of a corrosion-resistant material depending on geographical conditions.

[0026] The movable bag plate 10 as described above may include multiple movable bag plates formed in a river flow direction.

[0027] Next, a first bracket 20 is formed to extend horizontally toward the river on the side surface of the aforementioned foundation concrete C, that is, the side surface of the foundation concrete C in contact with the river, and is configured to support the movable bag plate 10.

[0028] Accordingly, the first bracket 20 includes a set of at least two first brackets 20 to support one movable bag plate 10, so that the movable bag plate 10 can be supported.

[0029] Next, the movable bag 30 is configured to be disposed in contact with the upper side surface of the aforementioned movable bag plate 10.

[0030] One end of the movable bag 30 is fixed to the bolts B of the foundation concrete C, and when air is injected into the movable bag 30, the movable bag 30 inflates, and when the air is discharged therefrom, the movable bag 30 acts to be in contact with the upper side surface of the movable bag plate 10. The movable bag 30 is formed to extend longer than the movable bag plate 10.

[0031] In particular, the movable bag 30 is configured as a double airbag consisting of two airbags.

[0032] Next, a separation plate 40 is disposed on the upper side of the movable bag 30 and is configured to be fixedly coupled by the bolts B of the foundation concrete C.

[0033] Next, a rubber hinge part 50 is disposed on the upper side of the aforementioned separation plate 40 and is fixedly coupled by the bolts B.

[0034] The rubber hinge part 50 is formed to extend horizontally toward the river, and is made of a waterproof rubber material that can be bent.

[0035] Next, a movable plate 60 is fixedly coupled to one end of the aforementioned rubber hinge part 50 extending toward the river, and is configured to stand upright or overturn depending on whether air is injected into the movable bag 30, thereby preventing the overflow of water and allowing pedestrian passage under normal conditions.

[0036] Next, a second bracket 70 is configured to support the aforementioned movable plate 60 from a lower side thereof and is arranged on the side of the foundation concrete C.

[0037] Next, a spacer 80 is formed on the second bracket 70 and is configured to substantially support the movable plate 60.

[0038] The spacer 80 includes a bolt part 81 so that the spacer 80 is fixed and height-adjustable on the second bracket 70, and a support part 82 on the bolt part 81 so as to support the movable plate 60.

[0039] Meanwhile, the flood barrier wall of the present disclosure may further include an overturn prevention wire 90.

[0040] The overturn prevention wire 90 includes a length adjustment part 91 formed therein, with a first end of the overturn prevention wire 90 fixedly coupled to the movable plate 60 and a second end thereof coupled to the second bracket 70, so as to prevent the movable plate 60 from overturning toward the riverbank when the movable plate 60 is erected.

[0041] Furthermore, in the present disclosure, the ratio of the widthwise length of the movable bag 30 in the river flow direction to the widthwise length of the movable plate 60 may be 0.7 to 0.8:1, and the ratio of the height length of the movable bag 30 extending toward the river to the height length of the movable plate may be 0.4 to 0.6:1.

[0042] A construction method of the flood barrier wall, which is configured as described above, according to the present disclosure will be described below.

[0043] The construction method may include a first and second bracket installation step of installing multiple first and second brackets 20 and 70 on the side surface of the foundation concrete C according to the present disclosure,

[0044] a spacer installation step of installing multiple spacers 80 on the second bracket 70 installed in the first and second bracket installation step,

[0045] a movable bag plate installation step of installing multiple bolts B on the foundation concrete C in the river flow direction, and installing the movable bag plate 10, which extends horizontally toward the river, on the bolts B coupled to the upper side of the foundation concrete C, wherein at least one movable bag plate 10 is disposed to be in contact with the upper side of the first bracket 20 and then installed in the first and second bracket installation step,

[0046] a movable bag installation step of disposing at least one movable bag 30, which is formed to extend longer than the movable bag plate 10 installed in the movable bag plate installation step, and has the form of a double airbag inflated by air injection, on the upper side of the movable bag plate 10, then coupling the movable bag 30 through the bolts B installed in the foundation concrete C, and connecting an air injection means A to the movable bag 30 so as to inject air thereinto,

[0047] a separation plate installation step of disposing at least one separation plate 40 on the upper side of the movable bag 30 installed in the movable bag installation step, wherein the at least one separation plate 40 is installed on the bolts B installed in the foundation concrete C, and

[0048] a rubber hinge part and movable plate installation step of coupling at least one movable plate 60 to at least one rubber hinge part 50 after the separation plate installation step, wherein one side of the rubber hinge part 50 is fixedly coupled to the bolts B installed in the foundation concrete C, and the movable plate 60 is disposed to be in contact with the spacer 80 installed on the second bracket 70 so as to enable installation of the rubber hinge part 50 and the movable plate 60.

[0049] In the spacer installation step, the spacer 80 includes the bolt part 81 to be coupled to the movable plate 60 and to perform height adjustment thereof, and the support part 82 formed on the bolt part 81 to support the movable plate 60, so that during the rubber hinge part and movable plate installation step, the height adjustment of the spacer 80 may be performed to level the movable plate 60.

[0050] Furthermore, in the movable bag installation step of the present disclosure, the ratio of the widthwise length of the movable bag 30 in the river flow direction to the widthwise length of the movable plate may be 0.7 to 0.8:1. In the movable bag installation step, the ratio of the height length of the movable bag 30 extending toward the river to the height length of the movable plate may be 0.4 to 0.6:1.

[0051] Furthermore, the construction method may further include an overturn prevention wire installation step of installing the overturn prevention wire 90, which includes the length adjustment part 91 provided therein, on the second bracket 70 and the movable plate 60 to prevent the movable plate 60 from overturning toward the riverbank when the movable plate 60 is erected after the rubber hinge part and movable plate installation step.

[0052] The operational effects of the flood barrier wall using a double airbag, which is configured as described above, according to the present disclosure will be described below.

[0053] First, as shown in FIG. 1, a flood barrier wall 100 using a double airbag according to the present disclosure allows pedestrian passage under normal conditions, as the movable plate 60 is overturned with no air injected into the movable bag 30.

[0054] In this case, the movable plate 60 is maintained at a predetermined distance from the movable bag 30 by the separation plate 40 and the spacer 80, thereby preventing a situation in which air is not injected into the movable bag 30 due to damage or deformation of the movable bag 30 caused by compression.

[0055] In the above state, when flooding is expected, an administrator injects air into the movable bag 30 through the air injection means A.

[0056] Here, in the present disclosure, the movable bag 30 has a structure in which two airbags are connected, and when air is injected into the movable bag 30, the movable plate 60 is operated to be erected at an angle close to a right angle.

[0057] In particular, the movable bag 30 is inflated to operate the movable plate 60 only when air is injected into the movable bag 30. Accordingly, in the present disclosure, the movable bag plate 10 is formed at the lower side of the movable bag 30 to support the movable bag 30 when air is injected into the movable bag 30.

[0058] The movable bag plate 10, as described above, is formed to extend horizontally toward the river, and thus if the length of the movable bag plate 10 extending in the horizontal direction is long, there is a problem in that the flow cross-sectional area is reduced. However, in the present disclosure, the movable bag 30 configured in the form of a double airbag is used, and thus even if the length of the movable bag plate 10 extending in the horizontal direction is short, the movable bag 30 may be inflated when air is sufficiently injected into the movable bag 30, thereby preventing a reduction in the flow cross-sectional area.

[0059] Meanwhile, as described above, when air is injected into the movable bag 30, the movable plate 60 is erected by the movable bag 30.

[0060] Here, the movable plate 60 is coupled to the rubber hinge part 50, and thus is erected by rotating around the rubber hinge part 50, which is made of rubber, as a rotation axis.

[0061] In particular, since the rubber hinge part 50 is made of rubber, the rubber hinge part 50 not only functions as a hinge but also provides excellent waterproof performance to serve as a water sealing element.

[0062] Meanwhile, as described above, when the movable plate 60 is completely erected by injecting air into the movable bag 30, the movable plate 60 may prevent the overflow of water as shown in FIG. 4.

[0063] Here, the movable bag 30 of the present disclosure has the form of a double airbag, and thus allows the movable plate 60 to be erected at an angle close to a right angle, even if the movable bag 30 is small in size.

[0064] Specifically, even when the ratio of the widthwise length of the movable bag 30 in the river flow direction to the widthwise length of the movable plate 60 is 0.7 to 0.8:1, and the ratio of the height length of the movable bag 30 extending toward the river to the height length of the movable plate 60 is 0.4 to 0.6:1, the movable plate 60 may be sufficiently erected at an angle close to a right angle. As a result, the manufacturing cost of the movable bag 30 may be reduced, and the movable bag 30 may be sufficiently operated even when the amount of air injected into the movable bag 30 to operate the movable bag 30 is small. In addition, the movable plate 60 may be completely erected in a short period of time.

[0065] Furthermore, in the present disclosure, the movable bag 30 for erecting the movable plate 60 is arranged at a position in contact with a river, so that, when the movable plate 60 is erected, no components for erecting the movable plate 60 are present toward the riverbank, thereby preventing possible loss of life.

[0066] In particular, since the movable bag 30 described above is inflated by air injection to erect the movable plate 60, the movable bag 30 may absorb wave forces even when the wave forces occur during flooding, and also provide the effect of preventing damage to the movable bag 30, which erects the movable plate 60, caused by the wave forces.

[0067] Furthermore, in the present disclosure, by applying the overturn prevention wire 90, it is possible to achieve the effect of preventing the movable plate 60 from overturning toward the riverbank when the movable plate 60 is erected.

[0068] Although the above-described embodiment has been described with respect to the preferred embodiment of the present disclosure, it is to be understood that the present disclosure is not limited thereto and that various modifications may be made and implemented without departing from the technical spirit of the present disclosure.

Claims

1. A flood barrier wall using a double airbag, the flood barrier wall comprising:foundation concrete extending in a longitudinal direction of river flow;a movable bag plate fixedly coupled to bolts coupled to an upper side of the foundation concrete and extending horizontally toward a river;a first bracket fixedly coupled to a side surface of the foundation concrete to support the movable bag plate;a movable bag, which is disposed on an upper side of the movable bag plate, fixedly coupled to the bolts coupled to the upper side of the foundation concrete, and formed to extend toward the river, wherein the movable bag is formed to extend longer than an extension length of the movable bag plate and is configured in a form of a double airbag composed of two airbags that are inflated by air injection;a separation plate disposed on an upper side of the movable bag and fixedly coupled to the bolts coupled to the upper side of the foundation concrete;a rubber hinge part disposed on an upper side of the separation plate, fixedly coupled to the bolts coupled to the upper side of the foundation concrete, formed to extend horizontally toward the river, and made of a flexible, waterproof rubber material;a movable plate fixedly coupled to one end of the rubber hinge part extending toward the river, erected vertically with respect to the rubber hinge part by the movable bag when air is injected into the movable bag, and overturned toward the river when the air inside the movable bag is discharged;a second bracket fixedly coupled to the side surface of the foundation concrete; anda spacer formed on the second bracket to support the movable plate.

2. The flood barrier wall of claim 1, wherein the spacer comprises a bolt part to be coupled to the second bracket and to perform height adjustment thereof, and a support part formed on the bolt part to support the movable plate.

3. The flood barrier wall of claim 1, further comprising:an overturn prevention wire, which comprises a length adjustment part provided therein, installed on the second bracket and the movable plate to prevent the movable plate from overturning toward a riverbank when the movable plate is erected.

4. The flood barrier wall of claim 1, wherein a ratio of a widthwise length of the movable bag in the river flow direction to a widthwise length of the movable plate is 0.7 to 0.8:1.

5. The flood barrier wall of claim 1, wherein a ratio of a height length of the movable bag extending toward the river to a height length of the movable plate is 0.4 to 0.6:1.

6. A construction method for constructing a flood barrier wall using a double airbag, the construction method comprising:a first and second bracket installation step of installing multiple first and second brackets on a side surface of foundation concrete;a spacer installation step of installing multiple spacers on the second bracket installed in the first and second bracket installation step;a movable bag plate installation step of installing multiple bolts on the foundation concrete in a river flow direction, and installing a movable bag plate, which extends horizontally toward a river, on the bolts coupled to an upper side of the foundation concrete, wherein at least one movable bag plate is disposed to be in contact with an upper side of the first bracket and then installed in the first and second bracket installation step;a movable bag installation step of disposing at least one movable bag, which is formed to extend longer than the movable bag plate installed in the movable bag plate installation step and has a form of a double airbag composed of two airbags inflated by air injection, on an upper side of the movable bag plate, then coupling the movable bag through the bolts installed in the foundation concrete, and connecting an air injection means to the movable bag so as to inject air thereinto;a separation plate installation step of disposing at least one separation plate on an upper side of the movable bag installed in the movable bag installation step, wherein the at least one separation plate is installed on the bolts installed in the foundation concrete; anda rubber hinge part and movable plate installation step of coupling at least one movable plate to at least one rubber hinge part after the separation plate installation step, wherein one side of the rubber hinge part is fixedly coupled to the bolts installed in the foundation concrete, and the movable plate is disposed to be in contact with the spacers installed on the second bracket so as to enable installation of the rubber hinge part and the movable plate.

7. The construction method of claim 6, wherein in the spacer installation step, each of the spacers comprises a bolt part to be coupled to the second bracket and to perform height adjustment thereof, and a support part formed on the bolt part to support the movable plate, so that during the rubber hinge part and movable plate installation step, the height adjustment of the spacer is performed to level the movable plate.

8. The construction method of claim 6, wherein in the movable bag installation step, a ratio of a widthwise length of the movable bag in the river flow direction to a widthwise length of the movable plate is 0.7 to 0.8:1.

9. The construction method of claim 6, wherein in the movable bag installation step, a ratio of a height length of the movable bag extending toward the river to a height length of the movable plate is 0.4 to 0.6:1.

10. The construction method of claim 6, further comprising:an overturn prevention wire installation step of installing an overturn prevention wire, which comprises a length adjustment part provided therein, on the second bracket and the movable plate to prevent the movable plate from overturning toward a riverbank when the movable plate is erected after the rubber hinge part and movable plate installation step.

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