Waterproofing devices and buildings

Abstract

To provide a waterproofing device and a building that can further prevent water from entering the inside of a waterproof wall. [Solution] The waterproofing device 13 includes a cylindrical waterproof wall 14. The waterproof wall 14 has a base 30 and a wall main body 40 provided on the base 30. The wall main body 40 has a bag-shaped pillar portion 41 and a sheet-shaped wall portion 42 connected to the pillar portion 41. When gas is supplied to the pillar portion 41, the pillar portion 41 expands so as to extend in the vertical direction, causing the wall main body 40 to stand up from the base 30. When gas is not supplied to the pillar portion 41, the wall main body 40 is foldable.

Description

[Technical Field]

[0001] The present invention relates to a waterproofing device and a building. [Background technology]

[0002] The waterproof sheet for buildings described in Patent Document 1 comprises a water-impermeable sheet body that covers the entire perimeter of a building, and a float that is connected to the top of the sheet body and floats on water. When the water level around the building rises due to flooding, the float rises to the water surface. When the float rises with the rising water level, the sheet body is pulled up. In this way, the perimeter of the building is covered with the waterproof sheet for buildings. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-3358 Summary of the Invention [Problem to be solved by the invention]

[0004] In the event of a flood or tsunami, in which a large amount of water suddenly surges in, there is a risk that water will overflow the float and penetrate inside the building waterproofing sheet. [Means for solving the problem]

[0005] (1) A waterproofing device that solves the above problem comprises a cylindrical waterproof wall, the waterproof wall having a base and a wall main body provided on the base, the wall main body having a bag-shaped pillar portion and a sheet-shaped wall portion connected to the pillar portion, and when gas is supplied to the pillar portion, the pillar portion expands so as to extend in the vertical direction, causing the wall main body to stand up from the base, and when gas is not supplied to the pillar portion, the wall main body is foldable.

[0006] With this configuration, if flood damage is predicted, gas can be supplied to the pillars to raise the wall body before flood damage occurs. Therefore, compared to conventional technology in which the waterproof wall rises as the water level rises, water intrusion inside the waterproof wall can be more effectively prevented.

[0007] In addition, a portion of the wall body is formed of a sheet-like wall portion. This reduces the weight of the wall body. Furthermore, since gas does not need to be supplied to the wall portion, the amount of gas supplied to the wall body can be reduced. This reduces the time it takes for the wall body to rise.

[0008] Furthermore, the pillars are deflated when gas is not being supplied. The wall is sheet-shaped. Therefore, the wall body can be folded when gas is not being supplied to the pillars. Therefore, the waterproof wall can be made smaller during normal times when no flooding is predicted.

[0009] (2) In the waterproofing device of (1) above, the wall body has a float portion provided at the upper end of the wall portion. With this configuration, the float portion floats on the water surface, making it difficult for the wall body to sink in water even when the water level outside the waterproof wall rises.

[0010] (3) In the waterproofing device of (2) above, the float portion is bag-shaped and expands so as to extend horizontally when the gas is supplied thereto. With this configuration, the float section is deflated when no gas is supplied, so the waterproof wall can be made smaller during normal times when no flooding is predicted.

[0011] If the float section is made of a material that floats on water, there is a risk that the float section will float due to normal rainfall, etc. In contrast, with the above configuration, gas is supplied to the float section only when a flood is predicted, so that the float section can be prevented from floating due to normal rainfall, etc.

[0012] (4) In any one of the waterproofing devices (1) to (3) above, when the direction in which the cylindrical waterproofing wall extends in a plan view is defined as the surrounding direction, the waterproofing wall is formed by arranging a plurality of wall-forming members having the base and the wall main body in the surrounding direction, and connecting adjacent wall-forming members to each other.

[0013] According to this configuration, the dimensions of the waterproof wall in the surrounding direction can be easily changed by changing the number of wall-constituting members. Furthermore, a waterproof wall can be formed by connecting multiple wall components on-site, and therefore the waterproof wall can be transported to the site in a divided state, making it easy to transport the waterproof wall.

[0014] (5) In the waterproofing device of (4) above, each of the plurality of wall constituent members has a first connection portion provided at a first end in the surrounding direction and a second connection portion provided at a second end in the surrounding direction and formed by two sheet members, and in adjacent wall constituent members, the first connection portion of one wall constituent member and the second connection portion of the other wall constituent member are welded to each other in a state in which the first connection portion of the one wall constituent member is positioned between the two sheet members of the other wall constituent member. This configuration improves the waterproofing of the connection points between adjacent wall components.

[0015] (6) In the waterproofing device of (5) above, the two sheet members of the other wall component are welded to the base of the one wall component, respectively. This configuration can further improve the waterproofing of the connection points between adjacent wall components.

[0016] (7) In the waterproofing device of any one of (1) to (6) above, the waterproofing wall is in the shape of a square tube, and the pillars are located at each corner. This configuration allows the wall body to stand up more stably.

[0017] (8) In the waterproofing device of any one of (1) to (7) above, a supply unit that supplies the gas to the waterproof wall is provided, and the supply unit is an air tank. With this configuration, gas can be supplied to the waterproof wall even during a power outage.

[0018] (9) A building that solves the above problem comprises a building body and any one of the waterproofing devices (1) to (8) above, and the waterproof wall is arranged to surround the building body.

[0019] According to this configuration, when flood damage is predicted, gas can be supplied to the columns to raise the wall body before flood damage occurs. Therefore, compared to conventional technology in which the waterproof wall rises as the water level rises, water intrusion inside the waterproof wall can be more effectively prevented. Therefore, the building body located inside the waterproof wall can be more reliably protected from flood damage.

[0020] Furthermore, since a portion of the wall body is made of a sheet-like wall portion, the weight of the wall body can be reduced. Also, since gas does not need to be supplied to the wall portion, the amount of gas supplied to the wall body can be reduced. Therefore, the time required for the wall body to rise can be shortened.

[0021] Furthermore, the pillars are deflated when gas is not being supplied. The wall is sheet-shaped. Therefore, the wall body can be folded when gas is not being supplied to the pillars. Therefore, the waterproof wall can be made smaller during normal times when no flooding is predicted.

[0022] (10) The building of (9) above is provided with a foundation that supports the main body of the building, the foundation having an embedded portion buried in the ground, the embedded portion having an outer periphery located on the outer periphery of the main body of the building, and the outer periphery having a storage portion that stores the waterproof wall.

[0023] With this configuration, the waterproof wall is normally located underground and therefore does not get in the way. Also, since the waterproof wall is housed in a housing provided in the foundation, the position of the waterproof wall is unlikely to shift relative to the main body of the building.

[0024] (11) In the building of (10) above, a lid is attached to the outer periphery in a manner that allows the opening of the storage section to be opened and closed. With this configuration, the opening of the storage compartment is normally closed by the lid, so rainwater and the like do not easily accumulate inside the storage compartment. When flood damage is predicted, the wall body rising from the base lifts up the lid, allowing it to be opened. [Effects of the Invention]

[0025] The waterproofing device and building of the present disclosure can better prevent water from seeping inside the waterproof wall. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a schematic diagram showing a building during a flood disaster. [Figure 2] FIG. 1 is a cross-sectional view showing a building under normal conditions. [Figure 3] This is a cross-sectional view showing a building when flood damage occurs. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] 6 is a cross-sectional view of the waterproof wall taken along line F6-F6 in FIG. 4. [Figure 7] 7 is a cross-sectional view of the waterproof wall taken along line F7-F7 in FIG. 4. [Figure 8] 8 is a cross-sectional view of the waterproof wall taken along line F8-F8 in FIG. 4. DETAILED DESCRIPTION OF THE INVENTION

[0027] A waterproofing device 13 and a building 10 of this embodiment will be described with reference to FIGS. 1 and 2, a building 10 includes a building body 11, a foundation 12 that supports the building body 11, and a waterproofing device 13 that protects the building body 11 from flood damage. The building body 11 in this embodiment is a house.

[0028] As shown in Figures 2 and 3, the foundation 12 has an embedded portion 21 embedded in the ground G, and a cylindrical rising portion 22 that rises from the embedded portion 21 and protrudes above ground. The building main body 11 is fixed to the rising portion 22. The embedded portion 21 has an outer periphery portion 23 that is located on the outer periphery of the building main body 11. A storage portion 23a is provided in the outer periphery portion 23. The storage portion 23a opens on the upper surface of the outer periphery portion 23. A lid 24 is attached to the outer periphery portion 23 in a manner that allows the opening of the storage portion 23a to be opened and closed.

[0029] The waterproofing device 13 includes a waterproof wall 14 , an air tank 15 , and piping 16 . The waterproof wall 14 is cylindrical. The waterproof wall 14 of this embodiment is rectangular cylindrical. The waterproof wall 14 is provided so as to surround the building main body 11. In the following description, the direction in which the cylindrical waterproof wall 14 extends in a plan view is referred to as the surrounding direction. The waterproof wall 14 of this embodiment is made of rubber.

[0030] The air tank 15 is a supply unit that supplies gas to the waterproof wall 14. In this embodiment, the gas supplied to the waterproof wall 14 is air. The air tank 15 is arranged under the floor of the building main body 11. The air tank 15 is provided with a valve (not shown). In this embodiment, the occupants of the building main body 11 can open and close the valve from inside the room.

[0031] The pipe 16 connects the waterproof wall 14 and the air tank 15. <Waterproof wall> The waterproof wall 14 has a base 30 and a wall body 40. The wall body 40 is provided on the base 30. The wall body 40 is flexible. As shown in FIG. 2, during normal times when no flooding is predicted, the waterproof wall 14 is stored in the storage section 23a with the wall body 40 in a folded state. When flooding is predicted, the wall body 40 rises from the base 30, and the waterproof wall 14 surrounds the building body 11, as shown in FIGS. 1 and 3.

[0032] As shown in Figures 1 and 4, the waterproof wall 14 of this embodiment has a plurality of wall constituent members 14a. The plurality of wall constituent members 14a are arranged side by side in the surrounding direction of the waterproof wall 14. Adjacent wall constituent members 14a in the surrounding direction of the waterproof wall 14 are connected to each other. The waterproof wall 14 is formed by arranging a plurality of wall constituent members 14a in the surrounding direction of the waterproof wall 14 and connecting adjacent wall constituent members 14a to each other. In this embodiment, the work of connecting the wall constituent members 14a is performed on site.

[0033] 4 and 5, each wall component 14a has a base 30 and a wall main body 40. The wall main body 40 has a pillar portion 41, a wall portion 42, a float portion 43, a first connecting portion 44, and a second connecting portion 45. A pillar portion 41 is located at each corner of the waterproof wall 14 (see FIG. 1).

[0034] 2 and 3, the base 30 is housed in the housing portion 23a of the outer peripheral portion 23. The base 30 is fixed to the inner surface of the housing portion 23a with a waterproof adhesive (not shown). A housing recess 31 is provided on the upper surface of the base 30. Normally, the wall main body 40 is housed in the housing recess 31 in a folded state.

[0035] The base 30 has a connecting portion 32 extending from a side surface of the base 30. The connecting portion 32 is inserted into a through hole 22a provided in the rising portion 22. The tip of the connecting portion 32 is located inside the rising portion 22.

[0036] A supply path 33 is provided in the base 30. The supply path 33 is provided at a position corresponding to the pillar portion 41 in the surrounding direction of the waterproof wall 14. A first end of the supply path 33 opens at the tip surface of the connecting portion 32. The piping 16 connects the air tank 15 and the first end of the supply path 33. A second end of the supply path 33 opens at the bottom surface 31 a of the accommodation recess 31.

[0037] The base 30 of this embodiment has a hollow portion 34 formed therein. The pillar portion 41 is bag-shaped. The pillar portion 41 is provided on the bottom surface 31a of the accommodation recess 31 of the base 30. The inside of the pillar portion 41 is connected to the second end of the supply path 33. Therefore, air can be supplied to the pillar portion 41 from the air tank 15 via the piping 16 and the supply path 33. In this embodiment, air is supplied from one air tank 15 to one pillar portion 41. When air is supplied to the pillar portion 41, the pillar portion 41 inflates so as to extend in the vertical direction.

[0038] 4 and 5, the wall portion 42 is connected to the pillar portion 41. The wall portion 42 is located on both sides of the pillar portion 41 in the surrounding direction of the waterproof wall 14. The wall portion 42 is sheet-shaped. In this embodiment, the wall portion 42 is integrally formed with the base 30.

[0039] The float portion 43 is provided at the upper end of the wall portion 42. In this embodiment, the float portion 43 is bag-shaped. The interior of the float portion 43 is connected to the interior of the pillar portion 41. Therefore, air from the air tank 15 is also supplied to the float portion 43 via the pillar portion 41. When air is supplied to the float portion 43, the float portion 43 inflates so as to extend horizontally.

[0040] 5 and 6, the first connecting portion 44 is located at a first end of the wall component member 14a in the surrounding direction of the waterproof wall 14. The second connecting portion 45 is located at a second end of the wall component member 14a in the surrounding direction of the waterproof wall 14. The second end of the wall component member 14a in the surrounding direction of the waterproof wall 14 is the end opposite to the first end of the wall component member 14a in the surrounding direction of the waterproof wall 14.

[0041] 5 and 7, the first connecting portion 44 of this embodiment is integrally formed with the base 30 and the wall portion 42. The first connecting portion 44 extends from the bottom surface 31a of the accommodating recess 31 to the upper end of the float portion 43.

[0042] 5, the second connection portion 45 is provided so as to protrude from the base 30 in the surrounding direction of the waterproof wall 14. In this embodiment, the second connection portion 45 is composed of two sheet members 46. Each sheet member 46 has a base portion 46a extending from the bottom surface 31a of the accommodating recess 31 to the upper end of the float portion 43, and a bent portion 46b provided at the lower end of the base portion 46a. The bent portions 46b of the two sheet members 46 are bent so as to move away from each other.

[0043] 6 and 7, in adjacent wall constituent members 14a, the first connecting portion 44 of one wall constituent member 14a and the second connecting portion 45 of the other wall constituent member 14a are welded to each other. In this embodiment, the first connecting portion 44 of one wall constituent member 14a is located between the base portions 46a of the two sheet members 46 of the second connecting portion 45 of the other wall constituent member 14a. In this state, the first connecting portion 44 and the base portions 46a of the two sheet members 46 of the second connecting portion 45 are welded to each other.

[0044] 7, the bent portions 46b of the two sheet members 46 of the second connecting portion 45 of the other wall constituent member 14a are arranged to overlap the inner surface of the accommodating recess 31 of one wall constituent member 14a. In this state, the bent portions 46b of the two sheet members 46 are each welded to the base 30. In other words, the two sheet members 46 of the other wall constituent member 14a are each welded to the base 30 of the one wall constituent member 14a.

[0045] As shown in FIG. 4, in adjacent wall constituent members 14a, the base 30 of one wall constituent member 14a and the base 30 of the other wall constituent member 14a are abutted against each other in the surrounding direction of the waterproof wall 14.

[0046] [Operation of this embodiment] The operation of this embodiment will be described. The waterproofing device 13 includes a cylindrical waterproof wall 14 arranged to surround the building main body 11, and an air tank 15 as a supply unit that supplies air to the waterproof wall 14. The waterproof wall 14 has a base 30 and a wall main body 40 arranged on the base 30. The wall main body 40 has a bag-shaped column portion 41, a sheet-shaped wall portion 42 connected to the column portion 41, and a bag-shaped float portion 43 arranged on the upper end of the wall portion 42.

[0047] Under normal circumstances when no flooding is predicted, the valve of the air tank 15 is closed. Therefore, air is not supplied from the air tank 15 to the pillar portion 41 and the float portion 43 of the waterproof wall 14. The pillar portion 41 and the float portion 43 are deflated when no air is supplied. Furthermore, the wall portion 42 is sheet-shaped. Therefore, when no air is supplied to the pillar portion 41 and the float portion 43, the wall main body 40 is foldable.

[0048] 2, under normal circumstances, the waterproof wall 14 is housed in the housing portion 23a of the foundation 12 with the wall main body 40 folded up. The lid 24 closes the opening of the housing portion 23a. When flooding, inundation, tsunami, or other water damage is predicted, the occupants of building 10 switch the valve of air tank 15 from closed to open, causing air in air tank 15 to be supplied to pillar 41 through pipe 16 and supply path 33.

[0049] As shown in Figures 4 and 8, when air is supplied to the column portion 41, the column portion 41 expands so as to extend in the vertical direction. When the column portion 41 expands so as to extend in the vertical direction, the wall portion 42 connected to the column portion 41 is also pulled up. Therefore, when air is supplied to the column portion 41, the wall main body 40 rises up from the base 30. As the wall main body 40 rises up from the base 30, it pushes up the lid 24, thereby opening the lid 24. The building main body 11 is surrounded by the rising wall main body 40.

[0050] In this way, when flooding is predicted, the wall body 40 can be raised before flooding occurs by supplying air to the columns 41. This makes it possible to better prevent water from seeping inside the waterproof wall 14 compared to conventional technology in which the waterproof wall 14 rises as the water level rises. This makes it possible to more reliably protect the building body 11 located inside the waterproof wall 14 from flooding.

[0051] In this embodiment, air is also supplied to the float portion 43 through the column portion 41. When air is supplied to the float portion 43, it inflates and extends horizontally. As shown in FIG. 1, the float portion 43 floats on the water surface Ws, so that the wall main body 40 is less likely to sink in water even when the water level outside the waterproof wall 14 rises.

[0052] [Effects of this embodiment] The effects of this embodiment will be described. (1) The waterproofing device 13 includes a cylindrical waterproof wall 14. The waterproof wall 14 has a base 30 and a wall main body 40 provided on the base 30. The wall main body 40 has a bag-shaped pillar portion 41 and a sheet-shaped wall portion 42 connected to the pillar portion 41. When air is supplied to the pillar portion 41, the pillar portion 41 expands so as to extend in the vertical direction, causing the wall main body 40 to stand up from the base 30. When air is not supplied to the pillar portion 41, the wall main body 40 is foldable.

[0053] According to this configuration, when flood damage is predicted, the wall body 40 can be raised before flood damage occurs by supplying air to the pillars 41. Therefore, compared to conventional technology in which the waterproof wall 14 rises as the water level rises, water intrusion inside the waterproof wall 14 can be more effectively prevented.

[0054] Furthermore, a portion of the wall main body 40 is configured by a sheet-like wall portion 42. This allows the weight of the wall main body 40 to be reduced. Furthermore, since air does not need to be supplied to the wall portion 42, the amount of air supplied to the wall main body 40 can be reduced. Therefore, the time required for the wall main body 40 to rise can be shortened.

[0055] Furthermore, the pillars 41 are deflated when air is not supplied to them. The wall 42 is sheet-shaped. Therefore, the wall body 40 is foldable when air is not supplied to the pillars 41. Therefore, the waterproof wall 14 can be made smaller during normal times when no flooding is predicted.

[0056] (2) The wall body 40 has a float portion 43 provided at the upper end of the wall portion 42 . According to this configuration, the float portion 43 floats on the water surface Ws, so that the wall main body 40 is less likely to sink in water even when the water level outside the waterproof wall 14 rises.

[0057] (3) The float portion 43 is bag-shaped and expands horizontally when air is supplied to the float portion 43. According to this configuration, the float portion 43 is deflated when air is not supplied, so that the waterproof wall 14 can be made smaller during normal times when no flood damage is predicted.

[0058] If the float portion 43 is made of a material that floats on water, there is a risk that the float portion 43 will float due to normal rainfall, etc. In contrast, according to this embodiment, air is supplied to the float portion 43 only when a flood is predicted, so that the float portion 43 can be prevented from floating due to normal rainfall, etc.

[0059] (4) The waterproof wall 14 is composed of a plurality of wall constituent members 14a. Each wall constituent member 14a has a base 30 and a wall body 40. The plurality of wall constituent members 14a are arranged in the surrounding direction of the waterproof wall 14. Adjacent wall constituent members 14a are connected to each other.

[0060] According to this configuration, by changing the number of wall constituent members 14a, the dimensions of the waterproof wall 14 in the surrounding direction of the waterproof wall 14 can be easily changed. Furthermore, the waterproof wall 14 can be formed on-site by connecting multiple wall-constituting members 14a. Therefore, the waterproof wall 14 can be transported to the site in a divided state of multiple wall-constituting members 14a, making it easy to transport the waterproof wall 14.

[0061] (5) Each wall component 14a has a first connecting portion 44 provided at a first end in the surrounding direction of the waterproof wall 14 and a second connecting portion 45 provided at a second end in the surrounding direction of the waterproof wall 14. The second connecting portion 45 is formed of two sheet members 46. In adjacent wall components 14a, the first connecting portion 44 of one wall component 14a and the second connecting portion 45 of the other wall component 14a are welded to each other with the first connecting portion 44 of one wall component 14a positioned between the two sheet members 46 of the other wall component 14a.

[0062] This configuration can improve the waterproofing of the connection points between adjacent wall components 14a. (6) The two sheet members 46 of the second connecting portion 45 of the other wall constituent member 14a are each welded to the base 30 of one wall constituent member 14a.

[0063] This configuration can further improve the waterproofing of the connection points between adjacent wall components 14a. (7) The waterproof wall 14 is a square cylindrical wall. The pillars 41 are located at each corner. According to this configuration, the wall main body 40 can be made to stand up more stably.

[0064] (8) The waterproofing device 13 includes a supply unit that supplies gas to the waterproofing wall 14. The supply unit is an air tank 15. With this configuration, gas can be supplied to the waterproof wall 14 even during a power outage.

[0065] (9) The building 10 includes a building body 11 and a waterproofing device 13. The waterproofing wall 14 of the waterproofing device 13 is provided to surround the building body 11. According to this configuration, the building body 11 located inside the waterproof wall 14 can be more reliably protected from flood damage.

[0066] (10) The building 10 has a foundation 12 that supports a building main body 11. The foundation 12 has an embedded portion 21 that is embedded in the ground G. The embedded portion 21 has an outer periphery portion 23 that is located on the outer periphery of the building main body 11. The outer periphery portion 23 is provided with a storage portion 23a that stores a waterproof wall 14.

[0067] According to this configuration, under normal circumstances, the waterproof wall 14 is located underground G and is therefore unlikely to get in the way. In addition, since the waterproof wall 14 is housed in the housing portion 23a provided in the foundation 12, the position of the waterproof wall 14 relative to the building body 11 is unlikely to shift.

[0068] (11) A lid 24 is attached to the outer peripheral portion 23 in a state in which the opening of the storage portion 23a can be opened and closed. According to this configuration, under normal circumstances, rainwater and the like are less likely to accumulate inside storage section 23a because the opening of storage section 23a is closed by lid 24. When flood damage is predicted, wall main body 40 rising from base 30 lifts lid 24, allowing lid 24 to be opened.

[0069] (12) When the wall body 40 is not erected from the base 30, the lid 24 is located underground G. With this configuration, the lid 24 is not exposed above ground, so the design of the building 10 is less likely to be impaired.

[0070] (13) The air tank 15 is disposed under the floor of the building body 11. Therefore, the air tank 15 is unlikely to get in the way. (14) Air is supplied to one pillar 41 by one air tank 15. Therefore, the time required for the wall main body 40 to erect can be shortened compared to when air is supplied to multiple pillars 41 from one air tank 15.

[0071] (15) The base 30 has a hollow portion 34. This reduces the weight of the base 30. In addition, the base 30 is easily deformed so that the base 30 fits closely to the inner surface of the housing portion 23a of the outer peripheral portion 23. <Example of change> The above-described embodiments are examples of possible forms of the waterproofing device 13 and the building 10, and are not intended to limit the forms. The waterproofing device 13 and the building 10 may take forms different from those illustrated in the above-described embodiments. Examples of such forms include forms in which part of the configuration of the embodiments is replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Modified examples of the embodiments are shown below.

[0072] The building body 11 is not limited to a house. In the above embodiment, the waterproof wall 14 is provided so as to surround the building main body 11, but this is not limiting. The waterproof wall 14 may be provided, for example, so as to surround an open space that serves as an evacuation site.

[0073] The waterproof wall 14 does not have to be made of rubber. The waterproof wall 14 may be made of any material that is impermeable to water. The gas supplied to the waterproof wall 14 is not limited to air. The gas supplied to the waterproof wall 14 may be, for example, helium.

[0074] The wall body 40 of the waterproof wall 14 does not have to have the float portion 43. Even in this case, at least the effect (1) of the above embodiment can be obtained. The float portion 43 does not have to be bag-shaped. For example, the float portion 43 may be made of a material that floats on water. Even in this case, at least the effects (1) and (2) of the above embodiment can be obtained.

[0075] The waterproof wall 14 does not have to be made up of a plurality of wall-forming members 14a. Even in this case, at least the effect (1) of the above embodiment can be obtained. The connection structure of the wall components 14a adjacent to each other in the surrounding direction of the waterproof wall 14 may be changed as appropriate within the scope of ensuring waterproofness at the connection points.

[0076] The second connection portion 45 may be formed of a single sheet member 46 . The waterproof wall 14 does not have to be a rectangular cylindrical shape as long as it is cylindrical. When the waterproof wall 14 is in the shape of a square tube, the pillars 41 do not have to be located at each corner. Even in this case, at least the effect (1) of the above embodiment can be obtained.

[0077] The waterproof wall 14 may be provided on the ground. The lid 24 does not have to be attached to the outer periphery 23 of the base 12. In this case, the storage section 23a may be provided with a drainage section for draining water that accumulates in the storage section 23a.

[0078] The waterproof wall 14 does not normally have to be housed in the housing portion 23a of the foundation 12. The waterproof wall 14 may, for example, be buried in the ground G and housed in a case provided separately from the foundation 12.

[0079] The lid 24 may be exposed above ground. The supply unit may be an air compressor instead of the air tank 15. In this case, it is not necessary to replace the supply unit after supplying gas to the waterproof wall 14.

[0080] The air tank 15 does not have to be placed under the floor of the building body 11. The air tank 15 may be placed in, for example, a warehouse. The waterproofing device 13 may have a control unit that automatically controls the supply unit to supply gas to the waterproof wall 14 when flooding is predicted.

[0081] The vertical dimensions of the wall body 40 may be changed as appropriate depending on anticipated flood damage. During floods, water may enter the room through the water supply and drainage pipes. Therefore, if flooding is predicted, it is preferable to erect the wall body 40 of the waterproof wall 14 and temporarily shut off the water supply and drainage pipes.

[0082] <Additional Notes> This specification discloses the following techniques: [Appendix 1] A waterproofing device comprising a cylindrical waterproof wall, the waterproof wall having a base and a wall main body attached to the base, the wall main body having a bag-shaped pillar portion and a sheet-shaped wall portion connected to the pillar portion, wherein when gas is supplied to the pillar portion, the pillar portion expands so as to extend in the vertical direction, causing the wall main body to rise from the base, and when gas is not supplied to the pillar portion, the wall main body is foldable.

[0083] [Appendix 2] In the waterproofing device described in Supplementary Note 1, the wall body has a float portion provided at the upper end of the wall portion.

[0084] [Appendix 3] In the waterproofing device described in Supplementary Note 2, the float portion is bag-shaped and expands to extend horizontally when the gas is supplied thereto.

[0085] [Appendix 4] In the waterproofing device described in Appendix 1, when the direction in which the cylindrical waterproofing wall extends in a plan view is defined as the surrounding direction, the waterproofing wall is formed by arranging multiple wall-constituting members having the base and the wall main body in the surrounding direction and connecting adjacent wall-constituting members to each other.

[0086] [Appendix 5] In the waterproofing device described in Appendix 4, each of the plurality of wall constituent members has a first connection portion provided at a first end in the surrounding direction and a second connection portion provided at a second end in the surrounding direction and formed by two sheet members, and in adjacent wall constituent members, the first connection portion of one wall constituent member and the second connection portion of the other wall constituent member are welded to each other with the first connection portion of the one wall constituent member positioned between the two sheet members of the other wall constituent member.

[0087] [Appendix 6] In the waterproofing device described in Appendix 5, the two sheet members of the other wall component are each welded to the base of the one wall component.

[0088] [Appendix 7] In the waterproofing device described in Supplementary Note 1, the waterproofing wall is a square tube, and the pillars are located at each corner.

[0089] [Appendix 8] The waterproofing device according to Supplementary Note 1 further comprises a supply unit that supplies the gas to the waterproof wall, the supply unit being an air tank.

[0090] [Appendix 9] A building comprising a building body and a waterproofing device according to any one of appendices 1 to 8, wherein the waterproof wall is arranged to surround the building body.

[0091] [Appendix 10] The building described in Appendix 9 comprises a foundation that supports the building body, the foundation having an embedded portion embedded in the ground, the embedded portion having an outer periphery located on the periphery of the building body, and the outer periphery having a storage portion that stores the waterproof wall.

[0092] [Appendix 11] In the building described in Appendix 10, a lid is attached to the outer periphery in a manner that allows the opening of the storage section to be opened and closed. [Explanation of symbols]

[0093] 10...building, 11...building body, 12...foundation, 13...waterproofing device, 14...waterproof wall, 14a...wall component, 15...air tank as supply section, 21...embedded section, 23...periphery, 23a...storage section, 24...lid, 30...base, 40...wall body, 41...column section, 42...wall section, 43...float section, 44...first connection section, 45...second connection section, 46...sheet member.

Claims

1. Equipped with a cylindrical waterproof wall, The waterproof wall has a base and a wall body provided on the base, The wall main body has a bag-shaped column portion and a sheet-shaped wall portion connected to the column portion, When gas is supplied to the column portion, the column portion expands so as to extend in the vertical direction, and the wall main body rises from the base, A waterproofing device in which the wall body is foldable when the gas is not supplied to the column portion.

2. The waterproofing device according to claim 1 , wherein the wall body has a float portion provided at an upper end of the wall portion.

3. 3. The waterproofing device according to claim 2, wherein the float portion is bag-shaped and expands to extend horizontally when the gas is supplied thereto.

4. A waterproofing device as described in claim 1, wherein when the direction in which the cylindrical waterproofing wall extends in a plan view is defined as the surrounding direction, the waterproofing wall is formed by arranging multiple wall-constituting members having the base and the wall main body in the surrounding direction and connecting adjacent wall-constituting members to each other.

5. Each of the plurality of wall components comprises: a first connection portion provided at a first end in the surrounding direction; a second connection portion provided at a second end in the surrounding direction and configured by two sheet members; and 5. The waterproofing device according to claim 4, wherein in adjacent wall constituent members, the first connection portion of one wall constituent member and the second connection portion of the other wall constituent member are welded to each other in a state in which the first connection portion of the one wall constituent member is positioned between the two sheet members of the other wall constituent member.

6. 6. A waterproofing device according to claim 5, wherein each of said two sheet members of said other wall component is welded to said base of said one wall component.

7. The waterproof wall has a rectangular cylindrical shape, The waterproofing device according to claim 1 , wherein the posts are located at each corner.

8. a supply unit that supplies the gas to the waterproof wall; The waterproofing device according to claim 1 , wherein the supply unit is an air tank.

9. The building itself, A waterproofing device according to any one of claims 1 to 8; Equipped with The waterproof wall is provided to surround the main body of the building.

10. A foundation is provided to support the building body, The foundation has an embedded portion embedded in the ground, The embedded portion has an outer peripheral portion located on the outer periphery of the building main body, The building according to claim 9, wherein the outer periphery is provided with a housing portion for housing the waterproof wall.

11. The building according to claim 10, wherein a lid is attached to the outer periphery in a manner that allows the opening of the storage section to be opened and closed.

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