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 waterproof device and a building.

Background Art

[0002] The waterproof sheet for buildings described in Patent Document 1 includes a non-permeable sheet body that covers the entire building, and a float that is connected to the upper part of the sheet body and floats on water. When the water level around the building rises due to flood damage, the float floats on the water surface. When the float rises as the water level rises, the sheet body is pulled up. Thereby, the periphery of the building is covered with the waterproof sheet for buildings.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the case of flood damage such as floods and tsunamis where a large amount of water rushes in suddenly, there is a risk that water will enter the inside of the waterproof sheet for buildings over the float.

Means for Solving the Problems

[0005] (1) The waterproof device for solving the above problems includes a cylindrical waterproof wall, and the waterproof wall has a base and a wall body provided on the base. The wall body has a bag-shaped column part and a sheet-shaped wall part connected to the column part. By supplying gas to the column part, the column part expands so as to extend in the vertical direction, and the wall body rises from the base. In a state where no gas is supplied to the column part, the wall body is foldable.

[0006] With this configuration, if a flood is predicted, the wall can be raised before the flood occurs by supplying gas to the columns. Therefore, compared to conventional technology where the waterproof wall rises in response to rising water levels, water infiltration into the inside of the waterproof wall can be more effectively suppressed.

[0007] Furthermore, a portion of the wall structure is composed of sheet-like wall sections. This reduces the weight of the wall structure itself. Also, since gas does not need to be supplied to the wall sections, the amount of gas supplied to the wall structure can be reduced. Consequently, the time required for the wall structure to rise can be shortened.

[0008] Furthermore, the column section is deflated when no gas is supplied. The wall section is sheet-like. Therefore, the wall itself can be folded when no gas is supplied to the column section. Consequently, the waterproof wall can be miniaturized during normal times when flooding is not anticipated.

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

[0010] (3) In the waterproofing device described in (2) above, the float portion is bag-shaped and expands horizontally when the gas is supplied. With this configuration, the float section deflates when no gas is supplied, allowing the waterproof wall to be made smaller during normal times when flooding is not anticipated.

[0011] If the float is made of a material that floats on water, there is a risk that the float may float away due to normal rainfall. In contrast, with the above configuration, gas is supplied to the float only when flooding is predicted, thus preventing the float from floating away due to normal rainfall.

[0012] (4) In any one of the waterproofing devices described in (1) to (3) above, when the direction in which the cylindrical waterproofing wall extends in a plan view is defined as the enclosing direction, the waterproofing wall is constructed such that a plurality of wall components having the base and the wall body are arranged in the enclosing direction, and adjacent wall components are connected to each other.

[0013] With this configuration, the dimensions of the waterproof wall in the enclosure direction can be easily changed by changing the number of wall components. Furthermore, a waterproof wall can be formed by connecting multiple wall components on-site. Therefore, since the waterproof wall can be transported to the site in a state where it is divided into multiple wall components, transportation of the waterproof wall is easy.

[0014] (5) In the waterproofing device described in (4) above, each of the plurality of wall components has a first connecting portion provided at the first end in the enclosing direction and a second connecting portion provided at the second end in the enclosing direction and composed of two sheet members, and in adjacent wall components, the first connecting portion of one wall component and the second connecting portion of the other wall component are welded to each other such that the first connecting portion of one wall component is located between the two sheet members of the other wall component. This configuration improves the waterproofing of the connection points between adjacent wall components.

[0015] (6) In the waterproofing device described in (5) above, the two sheet members of the other wall component are each welded to the base of the one wall component. This configuration allows for improved waterproofing at the connection points of adjacent wall components.

[0016] (7) In any one of the waterproofing devices described in (1) to (6) above, the waterproofing wall is rectangular and cylindrical, and the column portions are located at each corner. This configuration allows the wall itself to stand more stably.

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

[0018] (9) A building that solves the above problems includes a building main body and any one of the waterproof devices (1) to (8) above, and the waterproof wall is provided so as to surround the building main body.

[0019] According to this configuration, when the occurrence of flood damage is predicted, by supplying gas to the column part, the wall main body can be raised before the occurrence of flood damage. Therefore, compared with the case where the waterproof wall rises as the water level rises as in the prior art, the intrusion of water into the inside of the waterproof wall can be further suppressed. Thus, the building main body located inside the waterproof wall can be more reliably protected from flood damage.

[0020] In addition, since a part of the wall main body is constituted by a sheet-like wall part, the weight of the wall main body can be reduced. Also, since gas does not need to be supplied to the wall part, the amount of gas supplied to the wall main body can be reduced. Therefore, the time required for the wall main body to rise can be shortened.

[0021] Furthermore, the column part is collapsed when no gas is supplied. Also, the wall part is sheet-like. For this reason, the wall main body can be folded when no gas is supplied to the column part. Therefore, during normal times when the occurrence of flood damage is not predicted, the waterproof wall can be downsized.

[0022] (10) In the building according to (9) above, a foundation for supporting the building main body is provided, the foundation has an embedded part embedded in the ground, the embedded part has an outer peripheral part located on the outer periphery of the building main body, and a housing part for housing the waterproof wall is provided on the outer peripheral part.

[0023] According to this configuration, during normal times, since the waterproof wall is located underground, it is unlikely to be in the way. Also, since the waterproof wall is housed in the housing provided in the foundation, the position of the waterproof wall relative to the building body is unlikely to shift.

[0024] (11) In the building of (10) above, a lid is attached to the outer peripheral portion in a state where the opening of the housing can be opened and closed. According to this configuration, during normal times, since the opening of the housing is blocked by the lid, it is difficult for rainwater or the like to accumulate in the housing. When the occurrence of water damage is predicted, the wall body rising from the base lifts the lid, and the lid is opened.

Advantages of the Invention

[0025] According to the waterproof device and the building of the present disclosure, the ingress of water inside the waterproof wall can be further suppressed.

Brief Description of the Drawings

[0026] [Figure 1] It is a schematic diagram showing a building at the time of water damage occurrence. [Figure 2] It is a cross-sectional view showing a building during normal times. [Figure 3] It is a cross-sectional view showing a building at the time of water damage occurrence. [Figure 4] It is a side view of the waterproof wall. [Figure 5] It is an exploded perspective view of the waterproof wall. [Figure 6] It is a cross-sectional view of the waterproof wall along the line F6 - F6 in FIG. 4. [Figure 7] It is a cross-sectional view of the waterproof wall along the line F7 - F7 in FIG. 4. [Figure 8] It is a cross-sectional view of the waterproof wall along the line F8 - F8 in FIG. 4.

Embodiments for Carrying Out the Invention

[0027] Referring to FIGS. 1 to 8, the waterproof device 13 and the building 10 of the present embodiment will be described. As shown in Figures 1 and 2, the building 10 comprises a building body 11, a foundation 12 supporting the building body 11, and a waterproofing device 13 for protecting the building body 11 from flood damage. In this embodiment, the building body 11 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 body 11 is fixed to the rising portion 22. The embedded portion 21 has an outer peripheral portion 23 located on the outer periphery of the building body 11. A housing portion 23a is provided in the outer peripheral portion 23. The housing portion 23a is open on the upper surface of the outer peripheral portion 23. A lid 24 is attached to the outer peripheral portion 23 in a manner that allows the opening of the housing portion 23a to be opened and closed.

[0029] The waterproofing device 13 comprises a waterproof wall 14, an air tank 15, and piping 16. The waterproof wall 14 is cylindrical. In this embodiment, the waterproof wall 14 is rectangular. The waterproof wall 14 is installed so as to surround the building 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. In this embodiment, the waterproof wall 14 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 located under the floor of the building body 11. The air tank 15 is equipped with a valve (not shown). In this embodiment, the occupants of the building body 11 can open and close the valve from inside the room.

[0031] The piping 16 connects the waterproof wall 14 and the air tank 15. <Waterproof wall> The waterproof wall 14 comprises a base 30 and a wall body 40. The wall body 40 is installed on the base 30. The wall body 40 is flexible. As shown in Figure 2, under normal circumstances when no flood is predicted, the waterproof wall 14 is housed in the housing section 23a with the wall body 40 folded. When a flood is predicted, as shown in Figures 1 and 3, the wall body 40 rises from the base 30, so that the waterproof wall 14 surrounds the building body 11.

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

[0033] As shown in Figures 4 and 5, each wall component 14a has a base 30 and a wall body 40. The wall body 40 has a column section 41, a wall section 42, a float section 43, a first connecting section 44, and a second connecting section 45. A column section 41 is located at each corner of the waterproof wall 14 (see Figure 1).

[0034] As shown in Figures 2 and 3, the base 30 is housed within the housing portion 23a of the outer perimeter 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. Under normal circumstances, the wall body 40 is housed in the housing recess 31 in a folded state.

[0035] The base 30 has a connecting portion 32 extending from the side of the base 30. The connecting portion 32 is inserted through 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 passage 33 is provided in the base 30. The supply passage 33 is located in a position corresponding to the column portion 41 in the enclosing direction of the waterproof wall 14. The first end of the supply passage 33 is open at the tip surface of the connecting portion 32. The piping 16 connects the air tank 15 to the first end of the supply passage 33. The second end of the supply passage 33 is open at the bottom surface 31a of the housing recess 31.

[0037] A hollow section 34 is provided inside the base 30 of this embodiment. The column portion 41 is bag-shaped. The column portion 41 is provided on the bottom surface 31a of the receiving recess 31 of the base 30. The inside of the column portion 41 is connected to the second end of the supply passage 33. Therefore, air can be supplied to the column portion 41 from the air tank 15 via the piping 16 and the supply passage 33. In this embodiment, one air tank 15 supplies air to each column portion 41. When air is supplied to the column portion 41, the column portion 41 inflates so as to extend vertically.

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

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

[0040] As shown in Figures 5 and 6, the first connection portion 44 is located at the first end of the wall component 14a in the enclosing direction of the waterproof wall 14. The second connection portion 45 is located at the second end of the wall component 14a in the enclosing direction of the waterproof wall 14. The second end of the wall component 14a in the enclosing direction of the waterproof wall 14 is the end opposite to the first end of the wall component 14a in the enclosing direction of the waterproof wall 14.

[0041] As shown in Figures 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 housing recess 31 to the upper end of the float portion 43.

[0042] As shown in Figure 5, the second connecting portion 45 is provided so as to protrude from the base 30 in the enclosing direction of the waterproof wall 14. The second connecting portion 45 in this embodiment is composed of two sheet members 46. Each sheet member 46 has a base portion 46a that extends from the bottom surface 31a of the housing 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 be separated from each other.

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

[0044] As shown in Figure 7, the bent portions 46b of the two sheet members 46 of the second connection portion 45 of the other wall component 14a are positioned to overlap the inner surface of the receiving recess 31 of the one wall component 14a. In this state, the bent portions 46b of the two sheet members 46 are each welded to the base 30. That is, the two sheet members 46 of the other wall component 14a are each welded to the base 30 of the one wall component 14a.

[0045] As shown in Figure 4, in adjacent wall components 14a, the base 30 of one wall component 14a and the base 30 of the other wall component 14a are abutted together in the direction of the enclosure of the waterproof wall 14.

[0046] [Operation of this embodiment] The operation of this embodiment will now be explained. The waterproofing device 13 comprises a cylindrical waterproof wall 14 provided to surround the building body 11, and an air tank 15 as a supply unit for supplying air to the waterproof wall 14. The waterproof wall 14 has a base 30 and a wall body 40 provided on the base 30. The wall body 40 has a bag-shaped column portion 41, a sheet-like wall portion 42 connected to the column portion 41, and a bag-shaped float portion 43 provided at the upper end of the wall portion 42.

[0047] Under normal circumstances, when flooding is not anticipated, the valve of the air tank 15 is closed. As a result, air is not supplied from the air tank 15 to the column section 41 and the float section 43 of the waterproof wall 14. The column section 41 and the float section 43 are deflated when no air is supplied. Also, the wall section 42 is sheet-like. Therefore, when no air is supplied to the column section 41 and the float section 43, the wall body 40 can be folded.

[0048] As shown in Figure 2, under normal circumstances, the waterproof wall 14 is housed within the housing section 23a of the foundation 12 with the wall body 40 folded. The cover 24 closes the opening of the housing section 23a. If water damage such as flooding, tsunamis, or other water-related disasters is predicted, the residents of building 10 switch the valve of air tank 15 from the closed state to the open state. As a result, the air in air tank 15 is supplied to the column section 41 through piping 16 and supply passage 33.

[0049] As shown in Figures 4 and 8, when air is supplied to the column 41, the column 41 inflates and extends vertically. When the column 41 inflates and extends vertically, the wall 42 connected to the column 41 is also lifted. Therefore, when air is supplied to the column 41, the wall body 40 rises from the base 30. The wall body 40 opens the cover 24 by pushing it up as it rises from the base 30. The building body 11 is surrounded by the rising wall body 40.

[0050] Thus, when flooding is predicted, the wall body 40 can be raised before the flood occurs by supplying air to the column section 41. Therefore, compared to the conventional method in which the waterproof wall 14 rises in response to rising water levels, water infiltration into the inside of the waterproof wall 14 can be suppressed more effectively. As a result, the building body 11 located inside the waterproof wall 14 can be protected more reliably from flooding.

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

[0052] [Effects of this embodiment] The effects of this embodiment will now be explained. (1) The waterproofing device 13 is equipped with a cylindrical waterproof wall 14. The waterproof wall 14 has a base 30 and a wall body 40 provided on the base 30. The wall body 40 has a bag-shaped column portion 41 and a sheet-like wall portion 42 connected to the column portion 41. When air is supplied to the column portion 41, the column portion 41 inflates so as to extend vertically, causing the wall body 40 to rise from the base 30. When air is not supplied to the column portion 41, the wall body 40 is foldable.

[0053] With this configuration, if a flood is predicted, the wall body 40 can be raised before the flood occurs by supplying air to the column section 41. Therefore, compared to the conventional technology in which the waterproof wall 14 rises as the water level rises, water infiltration into the inside of the waterproof wall 14 can be suppressed more effectively.

[0054] Furthermore, a portion of the wall body 40 is composed of a sheet-like wall section 42. This reduces the weight of the wall body 40. Also, since air does not need to be supplied to the wall section 42, the amount of air supplied to the wall body 40 can be reduced. Consequently, the time required for the wall body 40 to rise can be shortened.

[0055] Furthermore, the column section 41 is deflated when no air is supplied. Also, the wall section 42 is sheet-like. Therefore, the wall body 40 can be folded when no air is supplied to the column section 41. Consequently, the waterproof wall 14 can be made smaller during normal times when flooding is not anticipated.

[0056] (2) The wall body 40 has a float portion 43 provided at the upper end of the wall portion 42. With this configuration, the float section 43 floats on the water surface Ws, making it less likely for the wall body 40 to sink even when the water level outside the waterproof wall 14 rises.

[0057] (3) The float section 43 is bag-shaped. The float section 43 inflates so as to extend horizontally when air is supplied to it. With this configuration, the float section 43 is deflated when no air is supplied, so the waterproof wall 14 can be made smaller during normal times when flooding is not anticipated.

[0058] If the float section 43 is made of a material that floats on water, there is a risk that the float section 43 may float due to normal rainfall, etc. In contrast, according to this embodiment, air is supplied to the float section 43 only when a flood is predicted, so it is possible to avoid the float section 43 floating due to normal rainfall, etc.

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

[0060] With this configuration, the dimensions of the waterproof wall 14 in the enclosing direction can be easily changed by changing the number of wall components 14a. Furthermore, the waterproof wall 14 can be formed by connecting multiple wall components 14a at the site. Therefore, the waterproof wall 14 can be transported to the site in a state divided into multiple wall components 14a, making transportation of the waterproof wall 14 easy.

[0061] (5) Each wall component 14a has a first connecting portion 44 provided at the first end in the enclosing direction of the waterproof wall 14, and a second connecting portion 45 provided at the second end in the enclosing direction of the waterproof wall 14. The second connecting portion 45 is made up 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 such that the first connecting portion 44 of one wall component 14a is located between the two sheet members 46 of the other wall component 14a.

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

[0063] This configuration allows for improved waterproofing of the connection points between adjacent wall components 14a. (7) The waterproof wall 14 is rectangular and cylindrical. The column sections 41 are located at each corner. This configuration allows the wall unit 40 to be erected more stably.

[0064] (8) The waterproofing device 13 is equipped with a supply unit that supplies gas to the waterproof 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 comprises a building body 11 and a waterproofing device 13. The waterproofing wall 14 of the waterproofing device 13 is provided so as to surround the building body 11. This configuration allows for more reliable protection of the building body 11 located inside the waterproof wall 14 from flood damage.

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

[0067] With this configuration, the waterproof wall 14 is located underground G under normal conditions, so it is less likely to get in the way. Also, since the waterproof wall 14 is housed in the housing section 23a provided in the foundation 12, the position of the waterproof wall 14 relative to the building body 11 is less likely to shift.

[0068] (11) A lid 24 is attached to the outer periphery 23 in such a way that it can open and close the opening of the housing section 23a. With this configuration, under normal circumstances, the opening of the storage section 23a is closed by the lid 24, making it difficult for rainwater or other liquids to accumulate inside the storage section 23a. If flooding is anticipated, the wall body 40 rising from the base 30 lifts the lid 24, thereby opening the lid 24.

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

[0070] (13) The air tank 15 is located under the floor of the main building 11. Therefore, the air tank 15 is less likely to get in the way. (14) Air is supplied to each column section 41 by one air tank 15. Therefore, the time required for the wall body 40 to rise can be shortened compared to the case where air is supplied to multiple column sections 41 from one air tank 15.

[0071] (15) The base 30 is provided with a hollow section 34. This makes the base 30 lighter. In addition, the base 30 is more easily deformed so that it comes into close contact with the inner surface of the housing section 23a of the outer periphery 23. <Example of changes> The above embodiments are illustrative of possible forms of the waterproofing device 13 and the building 10, and are not intended to limit their forms. The waterproofing device 13 and the building 10 may take forms different from those illustrated in the above embodiments. Examples include forms in which some of the configurations of the embodiments are replaced, modified, or omitted, or forms in which new configurations are added to the embodiments. Modifications of the embodiments are shown below.

[0072] The building structure 11 is not limited to residential buildings. In the above embodiment, the waterproof wall 14 was provided to surround the main building body 11, but it is not limited to this. The waterproof wall 14 may, for example, be provided to surround a plaza that serves as an evacuation area.

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

[0074] The wall body 40 of the waterproof wall 14 does not necessarily have to have a 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. The float portion 43 may be made of, for example, 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 necessarily have to be composed of multiple wall components 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 the waterproof wall 14 in the surrounding direction may be modified as appropriate, within the limits that ensure waterproofness at the connection point.

[0076] The second connecting portion 45 may be composed of a single sheet member 46. The waterproof wall 14 does not need to be a rectangular tube, as long as it is cylindrical. • When the waterproof wall 14 is rectangular and cylindrical, the column portion 41 does 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 installed above ground level. The outer perimeter 23 of the foundation 12 does not necessarily have to have a cover 24 attached. In this case, the storage section 23a may be provided with a drain for draining water accumulated in the storage section 23a.

[0078] The waterproof wall 14 does not necessarily have to be housed in the housing section 23a of the foundation 12 under normal circumstances. The waterproof wall 14 may, for example, be embedded in the ground G and housed in a case provided separately from the foundation 12.

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

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

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

[0082] <Note> This specification discloses the following technologies: [Note 1] A waterproof device comprising a cylindrical waterproof wall, the waterproof wall comprising a base and a wall body provided on the base, the wall body comprising a bag-shaped column and a sheet-like wall portion connected to the column, wherein when gas is supplied to the column, the column expands so as to extend vertically, causing the wall body to rise from the base, and when the gas is not supplied to the column, the wall body is foldable.

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

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

[0085] [Note 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 enclosing direction, the waterproofing wall is constructed by arranging a plurality of wall components having the base and the wall body in the enclosing direction, and by connecting adjacent wall components to each other.

[0086] [Note 5] In the waterproofing device described in Appendix 4, each of the plurality of wall components has a first connecting portion provided at the first end in the enclosing direction and a second connecting portion provided at the second end in the enclosing direction and composed of two sheet members, and in adjacent wall components, the first connecting portion of one wall component and the second connecting portion of the other wall component are welded to each other such that the first connecting portion of one wall component is located between the two sheet members of the other wall component.

[0087] [Note 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] [Note 7] In the waterproofing device described in Appendix 1, the waterproofing wall is rectangular and cylindrical, and the column portions are located at each corner.

[0089] [Note 8] In the waterproofing device described in Appendix 1, the waterproofing wall is provided with a supply unit for supplying the gas, and the supply unit is an air tank.

[0090] [Note 9] A building comprising a building body and a waterproofing device described in any one of appendices 1 to 8, wherein the waterproofing wall is provided so as to surround the building body.

[0091] [Note 10] In the building described in Appendix 9, a foundation is provided to support the building body, the foundation has an embedded portion that is buried in the ground, the embedded portion has an outer perimeter portion located on the outer perimeter of the building body, and the outer perimeter portion is provided with a housing portion for housing the waterproof wall.

[0092] [Note 11] In the building described in Appendix 10, a lid is attached to the outer perimeter in such a way that it can open and close the opening of the housing. [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 unit, 21...Embedded part, 23...Peripheral part, 23a...Housing part, 24...Lid, 30...Base, 40...Wall body, 41...Column part, 42...Wall part, 43...Float part, 44...First connection part, 45...Second connection part, 46...Sheet member.

Claims

1. Equipped with a cylindrical waterproof wall, The waterproof wall comprises a base and a wall body provided on the base. The wall body comprises a bag-shaped column and a sheet-like wall portion connected to the column. When gas is supplied to the column, the column expands so as to extend vertically, causing the wall body to rise from the base. When the gas is not supplied to the column, the wall body is foldable. When the direction in which the cylindrical waterproof wall extends in a plan view is defined as the enclosing direction, the waterproof wall is constructed by arranging multiple wall components, each having a base and a wall body, in the enclosing direction, and by connecting adjacent wall components to each other. Each of the aforementioned plurality of wall components is: A first connecting portion provided at the first end in the surrounding direction, A second connecting portion is provided at the second end in the surrounding direction and is composed of two sheet members, It has, A waterproofing device in which, in adjacent wall components, the first connection portion of one wall component and the second connection portion of the other wall component are welded to each other such that the first connection portion of the one wall component is located between the two sheet members of the other wall component.

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

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

4. The waterproofing device according to claim 1, wherein the two sheet members of the other wall component are each welded to the base of the one wall component.

5. The aforementioned waterproof wall is rectangular and cylindrical in shape. The waterproofing device according to claim 1, wherein the column portion is located at each corner.

6. The waterproof wall is equipped with a supply unit for supplying the gas, The waterproof device according to claim 1, wherein the supply unit is an air tank.

7. The building itself, A waterproof device according to any one of claims 1 to 6, Equipped with, The aforementioned waterproof wall is a building structure that surrounds the main body of the building.

8. The building is provided with a foundation that supports the main body of the building, The aforementioned foundation has an embedded portion that is buried in the ground, The embedded portion has an outer periphery located on the outer periphery of the building body, The building according to claim 7, wherein the outer periphery is provided with a housing for housing the waterproof wall.

9. The building according to claim 8, wherein a lid is attached to the outer periphery in such a way that it can open and close the opening of the housing.

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