JP2022092640A - Inundation countermeasure structure - Google Patents

Abstract

To propose an inundation countermeasure structure that can be easily attached to and detached from the building, can be maintained at any time, and can effectively suppress inundation into the building.SOLUTION: There is provided an inundation countermeasure structure 2 including a waterproof sheet 5 provided around an outer wall 12 of a building 1, a plurality of supporting hardware 3 fixed to the outer wall 12, and a flat portion 4 formed on the ground so as to surround the outer circumference of the building 1. The supporting hardware 3 is fixed at a position higher than a gap 11 formed in the building 1. The waterproof sheet 5 is provided with a structure in which the upper end portion is locked to the supporting hardware 3 and the lower end portion is laid so as to cover the flat portion 4 so that the lower end portion and the flat portion 4 are in close contact with each other.SELECTED DRAWING: Figure 1

Description

The present invention relates to an inundation countermeasure structure of a building.

In recent years, flooding caused by typhoons and heavy rains and inundation of inland waters have become problems. As shown in FIGS. 9A and 9B, the building 101 has a seismic isolation slit and a gap 111 such as a joint or a slit provided at the top end or the joint portion of the building foundation 113. When the water level WL outside the building 101 becomes higher than these gaps 111, the building 101 is flooded. Inundation of the building 101 may affect the living space, equipment, and the like in the building 101.
As an inundation prevention structure for a building having a gap, for example, in Patent Document 1, as a water blocking structure for vertical joints formed between outer wall panels, a waterproof sheet and a waterproof member are attached to the outer wall panel with waterproof tape. Structure is disclosed.
Further, in Patent Document 2, a plate for preventing inundation in which a fin portion for preventing wind and rain from blowing is connected to the upper part (lower surface of the seismic isolation pit closure) or the lower part (upper surface of the seismic isolation pit retaining wall) of the seismic isolation slit. A seismic isolated building that shields the slit by pushing down the fin portion with water when flooded is disclosed.
Further, in Patent Document 3, a device in which a horizontal waterproof member that rises by buoyancy while being movable in the vertical direction is attached to the lower skeleton of the seismic isolated building, and a fixed-side packing is attached to the upper skeleton of the seismic isolated building. Is disclosed. This water blocking member has a structure that can be fixed to the fixed side packing by magnetic force.

Since the waterproof member of Patent Document 1 has a structure to be attached to the outer wall panel, the installation and maintenance of the waterproof member is limited to the construction of the outer wall panel (new construction or remodeling). Therefore, it is difficult to maintain the performance.
The seismic isolated building of Patent Document 2 is difficult to remove and maintain because the inundation prevention plate is fixed in the gap of the seismic isolated slit. Therefore, it is difficult to maintain the water blocking performance.
Further, the water stop device of Patent Document 3 requires regular maintenance to maintain the movable performance of the water stop member. Moreover, at the time of maintenance of the water stop device of Patent Document 3, it is necessary to install and remove the device, which is costly and time-consuming. Further, since the floating body that closes the slit protrudes from the side surface of the building, there is a possibility that the slit portion may be opened by being pushed downward by a drifting object or an underwater falling object at the time of flooding.

Japanese Unexamined Patent Publication No. 2018-003400 Japanese Unexamined Patent Publication No. 2007-285078 Japanese Unexamined Patent Publication No. 2015-175220

An object of the present invention is to propose an inundation countermeasure structure that can be easily attached to and detached from a building, can be maintained at any time, and can effectively suppress inundation into the building.

The inundation countermeasure structure of the present invention for solving the above-mentioned problems includes a waterproof sheet provided around the outer wall of the building, a plurality of supporting hardware fixed to the outer wall, and the ground so as to surround the outer circumference of the building. It has a flat portion formed on the surface. The support hardware is fixed at a position higher than the gap formed in the building (outer wall or between the outer wall and the foundation, etc.), and the upper end of the waterproof sheet is locked to the support hardware and the lower end thereof. The portion is laid so as to cover the flat portion.
According to such an inundation countermeasure structure, since the gap of the building is covered with the waterproof sheet, inundation into the building can be suppressed even when the surroundings of the building are flooded. Since the waterproof sheet is installed around the building by being locked to the support member, it can be easily attached to and detached from the building. Therefore, maintenance can be performed as appropriate. Further, since the lower end portion of the waterproof sheet is laid on a flat portion, it is possible to suppress the permeation of water by bringing it into close contact with the ground.

It is desirable to cover the periphery of the building by joining the ends of the waterproof sheets to each other while ensuring waterproofness. As the water-stopping sheet, for example, a sheet in which a plurality of sheet members are joined to ensure water-stopping can be used.
Further, if a water blocking material that is in close contact with the water blocking sheet is provided in the flat portion, the water blocking property is further improved. If a wire or strip-shaped plate made of a highly elastic material such as rubber is used as such a water blocking material, it is deformed by the load when the water blocking sheet is laid and adheres to the water blocking sheet.
Further, if a metal plate is laid on the flat portion and a magnetic material is installed on the lower end portion of the waterproof sheet, the waterproof sheet adheres to the flat portion and is turned over by water flow during flooding. It can be prevented from being damaged.
Further, the upper end portion of the waterproof sheet may be locked to a rod-shaped member laid horizontally on the plurality of supporting hardware via a locking member, or the upper end portion of the waterproof sheet may be locked to the upper end portion of the waterproof sheet. The member may be locked to the support metal by laying it horizontally on the support metal.

According to the inundation countermeasure structure of the present invention, it is easy to attach / detach to / from the building, maintenance can be performed at any time, and inundation into the building can be effectively suppressed.

It is a perspective view of the building in which the inundation countermeasure structure of this embodiment is installed. It is a perspective view which shows the support hardware. It is a figure which shows the flat part, (a) is a plan view, (b) is a sectional view. It is a figure which shows the water-stopping sheet, (a) is a perspective view, (b) is a joint portion. (A) is a cross-sectional view showing the installation status of the water stop sheet, (b) is a schematic view showing the installation status of the water stop sheet at the corner of the building, and (c) is a schematic view showing the lower part of the water stop sheet. It is a perspective view which shows the cover sheet. It is sectional drawing which shows the state of the inundation measures structure at the time of flooding. It is a perspective view which shows the installation situation of the waterproof sheet which concerns on other forms. It is a figure which shows the outline of the building which had a gap, (a) is a perspective view, (b) is a partially enlarged sectional view of the building.

In the present embodiment, as shown in FIG. 1, a building 1 in which a gap 11 (for example, a seismic isolation slit, a joint at the top of the foundation, a joint portion, a ventilation portion, etc.) is formed between the outer wall 12 and the foundation 13. The inundation countermeasure structure 2 installed in the building will be described. FIG. 1 is a building 1 provided with an inundation countermeasure structure 2. If a gap is formed in the building 1, water W may flow in from the gap 11 when flooding (flooding) of a water level WL higher than the gap 11 occurs outside the building due to flood inundation or inland water inundation. (See FIG. 9B. The inundation countermeasure structure 2 of the present embodiment is for preventing or reducing the inflow of water from the gap 11 into the building 1 at the time of flooding. The structure 2 has a support metal fitting 3, a flat portion 4, and a water blocking sheet 5.

The support hardware 3 is fixed to the outer wall 12 of the building 1 at a position higher than the gap 11. FIG. 2 shows the support hardware 3. In the present embodiment, as shown in FIG. 2, a plurality of supporting hardware 3 are fixed to the outer wall 12 at predetermined intervals in the circumferential direction of the building 1. The support hardware 3 is a member formed in an L shape by a first piece 31 fixed in a state of being overlapped on the wall surface of the outer wall and a second piece 32 extending from the first piece 31 in a direction orthogonal to the wall surface. Is. Two rod-shaped members 33 are laid horizontally on each of the plurality of support hardware 3 arranged on each side surface of the building 1. The two rod-shaped members 33 are fixed to the second piece 32 of the support hardware 3 so as to be parallel to each other with a predetermined interval.

FIG. 3 shows the flat portion 4. As shown in FIG. 3A, the flat portion 4 is formed on the ground surface GL around the building 1 so as to surround the building 1. As shown in FIG. 3B, the flat portion 4 forms a flat surface around the building 1. In the present embodiment, the guide material 41 is arranged on the edge of the flat portion 4 on the building 1 side and the edge on the opposite side of the building 1, respectively. The guide material 41 is made of a rod-shaped member laid on the ground surface, and indicates the position of the flat portion 4 in a state of protruding from the ground surface. As shown in FIG. 3A, the guide material 41 of the present embodiment is provided intermittently by omitting the corners of the building 1, but the arrangement of the guide material 41 is not limited. For example, it may be continuously arranged so as to surround the building 1.

A metal plate 42 is laid on the flat portion 4 of the present embodiment. The metal plate 42 is laid on the ground surface GL between the guide materials 41. The metal plate 42 is continuous in the circumferential direction of the building.
Further, a water blocking material 43 is provided on the surface of the flat portion 4 (upper surface of the metal plate 42). The water blocking material 43 is made of an elastic material made of a material that is expanded by pressure, and is deformed by the weight of the mounted water blocking sheet 5 or the weight of water at the time of flooding, so that the water blocking material 43 adheres to the water blocking sheet 5. do. For such a water blocking material 43, a wire material or a strip-shaped plate material made of an elastic material such as rubber may be used. The water blocking material 43 is continuous in the circumferential direction of the building 1 or continuous when deformed so that a water path is not formed between the flat portion 4 and the water blocking sheet 5. (For example, staggered) are arranged.

The waterproof sheet 5 is provided so as to surround the building 1 (see FIG. 1). 4 (a) and 4 (b) show the waterproof sheet 5. As shown in FIG. 4A, the waterproof sheet 5 is formed in a size that covers the periphery of the building 1 by connecting a plurality of sheet members 51 in the outer peripheral direction of the building. The sheet member 51 (water-stopping sheet 5) has water repellency or impermeability, and has strength that is not easily torn by drifting objects or the like during flooding. Further, the sheet member 51 (water-stopping sheet 5) has flexibility that allows it to be folded and wound, or has creases for folding.
In the joint portion 52 between the sheet members 51, as shown in FIG. 4B, the sheet members 51 are joined to each other in a state where the water stoppage is ensured by the water stoppage zipper 53. The configuration of the waterproof zipper 53 is not limited, but for example, a concave portion 53a formed at the end of one seat member 51 and a convex portion 53b formed at the end of the other seat member 51 may be formed. It is possible to adopt one that fits. At this time, it is desirable that the surface of the joint portion 52 on the building 1 side or the ground side is configured to be flat.

As shown in FIG. 4A, the water stop sheet 5 has an upper end portion locked to the support metal fitting 3 via a rod-shaped member 33. A plurality of locking members 54 are attached to the upper end portion of the water blocking sheet 5. The water blocking sheet 5 is locked to a rod-shaped member 33 laid horizontally on a plurality of supporting hardware 3 via a locking member 54. The configuration of the locking member 54 is not limited as long as it can be locked to the support hardware 3, but in the present embodiment, the rod-shaped fixing portion 55 fixed to the upper end of the waterproof sheet 5 and the fixing portion 55 are fixed. It has a T-shape formed by the rod-shaped locking portion 56 formed on the upper end of the rod-shaped member 33 and laid horizontally on the two rod-shaped members 33.
As shown in FIG. 5A, the waterproof sheet 5 extends from the height from the support hardware 3 to the ground surface GL and from the side surface of the building 1 to the edge (guide material 41) of the flat portion 4 opposite to the building 1. It has a length larger than the sum of the distances of. That is, the waterproof sheet 5 has a margin in length so that the tensile force does not act due to the water at the time of flooding at the corner portion between the wall surface of the building 1 and the ground surface GL.

Further, as shown in FIG. 5B, the waterproof sheet 5 is provided along one of the sheet members 51 arranged along the wall surface of the building 1 and the other wall surface connected to the wall surface. The lower end portion has a widened portion that can cover the fan-shaped range facing the corner portion of the building 1 between the seat member 51 and the other sheet member 51.
As shown in FIG. 5C, the magnetic material 7 is fixed to the portion of the waterproof sheet 5 that covers the flat portion 4. In this embodiment, a plurality of magnets (magnetic material 7) are adhered to the waterproof sheet 5.

The inundation countermeasure structure 2 of the present embodiment has a cover sheet 6 that covers the upper surface of the support hardware 3. FIG. 6 shows the cover sheet 6. The cover sheet 6 covers the space formed between the upper end of the waterproof sheet 5 locked to the support hardware 3 (rod-shaped member 33) and the outer wall 12 of the building 1, so that rainwater or rainwater directly falling on the space can be covered. The water flowing down along the outer wall 12 of the building 1 is prevented from flowing between the waterproof sheet 5 and the building 1. A shape-retaining member 61 for holding the shape of the upper end portion of the cover sheet 6 is fixed to the cover sheet 6. The cover sheet 6 covers the space formed between the cover sheet 6 and the building 1 by engaging the shape-retaining member 61 with the rod-shaped member 33. The shape-retaining member 61 positions the cover sheet 6 so that the end portion of the cover sheet 6 abuts on the outer wall 12, and suppresses the cover sheet 6 from bending due to the weight of water or the like. The shape-retaining member 61 of the present embodiment includes a horizontal member laid horizontally on the pair of rod-shaped members 33 and a vertical member inserted between the pair of rod-shaped members 33 in order to suppress the displacement of the shape-retaining member 61. It has a T-shape.

FIG. 7 shows the usage status of the inundation countermeasure structure 2. According to the inundation countermeasure structure 2 of the present embodiment, since the gap 11 of the building 1 is covered with the waterproof sheet 5, water flows into the building 1 from the gap 11 even when the periphery of the building 1 is flooded. Can be prevented or reduced.
Since the waterproof sheet 5 is configured by connecting a plurality of sheet members 51 and is laid around the building 1 by being locked to the support hardware 3, it is easy to attach / detach to / from the building 1. be. Therefore, maintenance can be performed as appropriate. Further, the waterproof sheet 5 may be removed in normal times and installed before rain or a typhoon that may cause flooding or the like is expected, and the inundation countermeasure structure 2 may hinder the design of the building 1. The sex is low.

Further, since the lower end portion of the water blocking sheet 5 is laid on the flat flat portion 4, it can be easily brought into close contact with the ground surface GL, and the permeation of water can be prevented or reduced. Further, since the magnetic material 7 is installed at the lower end of the waterproof sheet 5, it is joined to the metal plate 42 laid on the flat portion 4. Therefore, it is possible to prevent the waterproof sheet 5 from being turned over due to the flow of water during flooding or the like.
Further, since the water blocking material 43 is interposed between the flat portion 4 and the water blocking sheet 5, the water is stopped by the weight of the water blocking sheet 5 and the weight of the water W accumulated on the water blocking sheet 5. By deforming (pushing out) the material 43, the adhesion between the water blocking sheet 5 and the flat portion 4 is improved, and the water stopping property is further enhanced.
Further, since the guide material 41 protrudes so as to be higher than the upper surface of the metal plate 42, weirs are formed in front of and behind the contact surface between the water blocking sheet 5 and the metal plate 42, and the water stopping property is further improved. It has been raised.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and each of the above-mentioned components can be appropriately changed without departing from the spirit of the present invention.
For example, in the above embodiment, the water blocking sheet 5 is installed by locking the locking member 54 fixed to the upper end of the water blocking sheet 5 to the rod-shaped member 33 laid horizontally on the support hardware 3. The method of installing the water stop sheet 5 is not limited, and for example, as shown in FIG. 8, a rod-shaped member 57 attached to the upper end portion of the water stop sheet 5 may be laid horizontally on the support hardware 3.
Further, the magnetic material 7 is not limited to the case where it is adhered to the waterproof sheet 5, and for example, a magnet may be sewn to the waterproof sheet 5. Further, the magnetic material 7 may be stored in the pocket formed on the waterproof sheet 5. Further, the magnetic material may be installed as needed and may be omitted.
In the flat portion 4, the water blocking property may be improved by placing a weight such as sandbags on the upper surface of the water blocking sheet 5.
Further, the cover sheet 6 may be installed as needed. For example, if there is a low possibility that water will flow between the waterproof sheet 5 and the outer wall 12, such as when a portion protruding from the outer wall 12 such as a veranda is formed above the support hardware 3, it may be omitted. good.
Further, the waterproof material 43 may be omitted as long as the adhesion between the waterproof sheet 5 and the flat portion 4 can be ensured.
Further, in the above embodiment, the ends of the plurality of sheet members 51 are connected to each other to form the waterproof sheet 5, but even if the end portions of one waterproof sheet 5 are joined to cover the building 1. good.

1 Building 11 Gap 12 Outer wall 13 Foundation 2 Flood control structure 3 Support hardware 33 Rod-shaped member 4 Flat part 41 Guide material 42 Metal plate 5 Water stop sheet 51 Sheet member 52 Joint part 54 Locking member 6 Cover sheet 7 Magnetic material

Claims (6)

A waterproof sheet that surrounds the building and
With multiple supporting hardware fixed to the outer wall,
An inundation countermeasure structure including a flat portion formed on the ground around the building.
The supporting hardware is fixed at a position higher than the gap formed in the building.
The water blocking sheet has a water inundation countermeasure structure, characterized in that an upper end portion is locked to the supporting hardware and a lower end portion is laid so as to cover the flat portion. The inundation countermeasure structure according to claim 1, wherein the ends of the water stop sheets are joined to each other while ensuring water stop. The inundation countermeasure structure according to claim 1 or 2, wherein a waterproof material that is in close contact with the waterproof sheet is provided on the flat portion. A metal plate is laid on the flat part,
The inundation countermeasure structure according to any one of claims 1 to 3, wherein a magnetic material is installed at the lower end of the waterproof sheet. One of claims 1 to 4, wherein the upper end portion of the waterproof sheet is locked to a rod-shaped member laid horizontally on the plurality of supporting hardware via a locking member. Inundation countermeasure structure described in. A rod-shaped member is attached to the upper end of the waterproof sheet.
The water inundation countermeasure according to any one of claims 1 to 4, wherein the waterproof sheet is locked to the support metal by laying the rod-shaped member horizontally on the support metal. structure.

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