JP7729012B2 - structure - Google Patents

Description

The present invention relates to a structure.

Rainwater tanks that are installed on the side of buildings and store rainwater that falls on the building's roof are known (see, for example, Patent Document 1). Also known are water tanks that are formed within the bridge piers of expressways and store rainwater that falls on the expressways (see, for example, Patent Document 2).

Japanese Utility Model Application Publication No. 60-58663 Japanese Patent Application Publication No. 11-323828

The technology disclosed in Patent Document 1, for example, stores rainwater in a rainwater tank during heavy rainfall, thereby preventing river flooding and flooding above floor level. Furthermore, unlike building a rainwater storage tank underground, the technology disclosed in Patent Document 1 does not require excavation of the ground, improving workability.

However, the technique disclosed in Patent Document 1 requires a space to install the rainwater tank on the side of the structure.
Furthermore, in the technology disclosed in Patent Document 2, the space within the bridge pier is used as a water storage space, so the amount of water that can be stored is limited.

The present invention takes the above into consideration and aims to provide a structure that can store rainwater while making effective use of space.

The structure according to the first aspect comprises a structure having a courtyard with or without a roof, and a waterproofing member surrounding the courtyard and forming a water storage space in the courtyard.

In the structure according to the first aspect , the water-blocking member surrounds the courtyard of the structure, forming a water storage space in the courtyard. This allows rainwater to be stored in the water storage space during heavy rain, for example. This makes it possible to prevent river flooding, flooding above floor level, etc.

In addition, as mentioned above, the present invention forms a water storage space in the courtyard. Therefore, unlike forming a rainwater storage tank underground, the present invention does not require excavation underground, improving workability. Furthermore, because the present invention forms a water storage space in the courtyard, it is possible to increase the amount of water that can be stored compared to forming a water storage space within a bridge pier, as in prior art (see, for example, Patent Document 2).

Furthermore, the present invention combines the courtyard with the water storage space. This allows for more efficient use of space than when a rainwater tank is installed in a structure.

The structure of the second aspect is the structure of the first aspect, further comprising a drainage pipe connected to the courtyard for draining rainwater from the courtyard, and an opening/closing member attached to the drainage pipe for opening and closing the drainage pipe.

In the structure according to the second aspect , a drainage pipe for draining rainwater from the courtyard is connected to the courtyard, and an opening/closing member for opening and closing the drainage pipe is provided on the drainage pipe.

Here, for example, during normal times other than heavy rain, the drain pipe opening and closing member is left open. This allows rainwater from the courtyard to be drained through the drain pipe.

On the other hand, during heavy rain, the drain pipe's opening and closing mechanism is closed, limiting the drainage of rainwater from the courtyard through the drain pipe. As a result, rainwater can be efficiently stored in the courtyard's water storage space. This can further reduce river flooding and flooding above floor level (regional flooding damage).

A structure according to a third aspect is the structure according to the first or second aspect , further comprising a housing portion for housing the water-blocking member.

According to the structure of the third aspect , a storage section for storing the water-blocking member is provided. As a result, by storing the water-blocking member in the storage section during normal times other than heavy rain, it is possible to eliminate water storage space from the courtyard. Therefore, the effective space of the courtyard can be expanded.

On the other hand, during heavy rain, the waterproofing material housed in the housing can be deployed into the courtyard, creating a water storage space in the courtyard. This can help prevent river flooding and flooding above floor level (regional flooding damage).

A structure according to a fourth aspect is a structure according to any one of the first to third aspects , wherein the waterproof member includes at least one of a waterproof shutter, a water shielding plate, and pressure-resistant glass facing the courtyard.

According to the structure of the fourth aspect , a water storage space can be easily formed in the courtyard using waterproof shutters, water shielding plates, and pressure-resistant glass facing the courtyard.

As described above, the present invention makes it possible to obtain a structure that can store rainwater while making effective use of space.

FIG. 1 is a plan view showing a structure according to a first embodiment. 2 is a cross-sectional view taken along line 2-2 of FIG. 1. 3 is a cross-sectional view corresponding to FIG. 2 showing a state in which a water storage space is formed in the courtyard of the structure according to the first embodiment. FIG. FIG. 3 is a plan view corresponding to FIG. 2 and showing a structure according to a second embodiment. 5 is a cross-sectional view corresponding to FIG. 4 showing a state in which a water storage space is formed in the courtyard of the structure according to the second embodiment. FIG. FIG. 4 is a longitudinal cross-sectional view showing a water shield plate according to a modified example of the first embodiment. FIG. 10 is a perspective view showing a courtyard according to a modified example of the first embodiment. FIG. 10 is a plan view showing a structure according to a modified example of the first embodiment.

(First embodiment)
First, the first embodiment will be described.

Figure 1 shows a structure 10 according to the first embodiment. The structure 10 has a structural body 20 and a stormwater treatment facility 40 (see Figure 2). The structural body (superstructure) 20 is formed in a rectangular ring shape (a square-shaped opening) in a plan view. An unroofed courtyard 12 is formed in the center of the structural body 20. The courtyard 12 is formed in a rectangular shape in a plan view. The ground is exposed to this courtyard 12.

As shown in Figure 2, the structure 20 is made up of multiple floors. Each room 22 on each floor of the structure 20 has a balcony 24 facing the courtyard 12. The balcony 24 has a waist wall 26. An opening 28 is formed above this waist wall 26. The waist wall 26 is an example of an exterior material facing the courtyard 12.

Multiple waterproof shutters are provided on the first floor 20F1 of the structure 20. The multiple waterproof shutters are electrically operated shutters that are waterproof and pressure-resistant (water pressure resistant). These waterproof shutters are provided in the passageways (not shown) and verandas 24 on the first floor 20F1 of the structure 20, surrounding the courtyard 12.

Figure 3 shows, as an example, a waterproof shutter 30 installed on the balcony 24 on the first floor 20F1 of the structure 20. The waterproof shutter 30 is installed on the balcony 24 so that the opening 28 can be opened and closed.

Specifically, as shown in Figure 2, the waterproof shutter 30 is unfoldably stored in a storage section 32 provided on the balcony 24 on the upper floor. In this state, the opening 28 of the balcony 24 is open. On the other hand, as shown in Figure 3, when the waterproof shutter 30 is unfolded downward from the storage section 32, the waterproof shutter 30 is positioned along the outer surface of the waist wall 26, and the lower end of the waterproof shutter 30 reaches the ground in the courtyard 12. This closes the opening 28 of the balcony 24.

When the multiple waterproof shutters 30 on the first floor 20F1 are deployed, the courtyard 12 is surrounded by these waterproof shutters 30. This creates a water storage space 34 inside the multiple waterproof shutters 30 that can store rainwater.

The waterproof shutter 30 is an example of a waterproof member. A control unit 70, which will be described later, is electrically connected to the multiple waterproof shutters 30. The control unit 70 switches these waterproof shutters 30 between a stored state in which they are stored in the storage section 32 and an expanded state in which they are expanded from the storage section 32.

(Rainwater treatment facility)
2 and 3 , the structure 10 is provided with a stormwater treatment facility 40 that drains stormwater into a public stormwater pipe 14. The public stormwater pipe 14 is, for example, buried in the ground G outside the site of the structure 10. A public side gutter 16 or the like is connected to the public stormwater pipe 14 via a drainage pipe 18, for example.

The stormwater treatment equipment 40 comprises multiple rain gutters 44, multiple rainwater cisterns 46A, 46B, multiple drainage pipes 48, 54, multiple courtyard drainage pipes 52, and an opening/closing member 60. The multiple rain gutters 44 are drainage pipes that extend vertically along the outer wall (peripheral wall) 20A of the structure 20 and are provided on both sides of the structure 20. The upper ends of these rain gutters 44 reach the roof 20R of the structure 20.

As shown in FIG. 1, a parapet 36 is provided on the outer and inner periphery of the roof 20R of the structure 20, surrounding the roof 20R. This roof 20R is formed with multiple roof drainage outlets 42 for draining rainwater. The multiple roof drainage outlets 42 are formed on both sides of the roof 20R. The upper ends of the aforementioned rain gutters 44 are each connected to these roof drainage outlets 42.

The floor of the rooftop 20R has a drainage slope to allow rainwater to flow into the rooftop drain outlets 42. The number and placement of the rooftop drain outlets 42 can be changed as needed.

As shown in Figure 3, the lower ends of the rain gutters 44 are connected to rainwater manholes 46A and 46B, respectively. The rainwater manholes 46A and 46B are buried in the ground G on the site of the structure 10. This allows rainwater from the rooftop 20R to be drained into the rainwater manholes 46A and 46B via the rooftop drain outlet 42 (see Figure 1) and the rain gutters 44.

The multiple rainwater manholes 46A, 46B are connected to one another via drain pipes 48. The drain pipes 48 are also connected to multiple courtyard drain pipes 52. These courtyard drain pipes 52 are connected to multiple courtyard drain outlets 50 formed in the courtyard 12. As a result, rainwater from the courtyard 12 is drained into the drain pipes 48 via the courtyard drain outlets 50 and the courtyard drain pipes 52.

Furthermore, when a water storage space 34 is formed by multiple waterproof shutters 30, the multiple courtyard drain outlets 50 are arranged within the water storage space 34. In other words, the water storage space 34 is connected to the drain pipe 48 via the courtyard drain outlets 50 and the courtyard drain pipe 52. As a result, rainwater W stored in the water storage space 34 is drained into the drain pipe 48 via the courtyard drain outlets 50 and the courtyard drain pipe 52. Note that the courtyard drain pipe 52 is an example of a drain pipe.

Of the multiple stormwater manholes 46A, 46B, the stormwater manhole 46A on the public stormwater pipe 14 side is connected to the public stormwater pipe 14 via a drainage pipe 54. In addition, the drainage pipes 48, 54 have a drainage gradient (downward gradient) that descends toward the public stormwater pipe 14. This allows rainwater from the rooftop 20R and courtyard 12 to drain from the stormwater manholes 46A, 46B via the drainage pipes 48, 54 into the public stormwater pipe 14.

Here, an opening/closing member 60 is provided in the stormwater manhole 46A on the public stormwater pipe 14 side. The opening/closing member 60 is, for example, a solenoid valve that opens and closes the drain pipe 54, or an opening/closing damper (opening/closing plate) that opens and closes the drain pipe 54. A control unit 70 is electrically connected to the opening/closing member 60. The control unit 70 switches the opening/closing member 60 between an open state that opens the drain pipe 54 and a closed state that closes the drain pipe 54.

(Control unit)
The control unit 70 is configured by a computer including, for example, a CPU, a memory, and a recording device, and is electrically connected to the above-mentioned waterproof shutters 30 and opening/closing members 60. The control unit 70 controls the operations of the multiple waterproof shutters 30 and opening/closing members 60. The control unit 70 of this embodiment controls the operations of the opening/closing members 60 and the multiple waterproof shutters 30 based on, for example, a precipitation forecast for the area where the structure 10 is located.

Specifically, the control unit 70 has a receiving unit that receives a precipitation forecast for the area where the structure 10 is located. When the precipitation forecast received by the receiving unit exceeds a predetermined value (threshold value), the control unit 70 activates multiple waterproof shutters 30 on the first floor 20F1 of the structure 20 and deploys the waterproof shutters 30 housed in the housing 32. As a result, the courtyard 12 is surrounded by the multiple waterproof shutters 30, and a water storage space 34 capable of storing rainwater W is formed inside these waterproof shutters 30.

In addition, when the precipitation forecast received by the receiving unit exceeds a predetermined value, the control unit 70 activates the opening/closing member 60, switching it from an open state that opens the drain pipe 54 to a closed state that closes the drain pipe 54. This stops the drainage W of rainwater from the stormwater treatment equipment 40 of the structure 10 to the public storm sewer 14.

The predetermined value for the precipitation forecast is set based on, for example, the drainage capacity of the public storm sewer 14 and the drainage capacity of the stormwater treatment equipment 40 of the structure 10. The control unit 70 then activates the opening/closing member 60 and the multiple waterproof shutters 30 when, for example, the precipitation forecast received by the receiving unit exceeds the drainage capacity of at least one of the public storm sewer 14 and the stormwater treatment equipment 40 of the structure 10.

(effect)
Next, the operation of the first embodiment will be described.

Figure 2 shows a state (normal state) in which multiple waterproof shutters 30 (see Figure 3) are stored in the storage section 32 and the opening/closing member 60 opens the drain pipe 54. From this state, if the precipitation forecast received by the receiving section exceeds a predetermined value, the control section 70 first activates the multiple waterproof shutters 30 on the first floor 20F1 of the structure 20, as shown in Figure 3, and deploys these waterproof shutters 30. This creates a water storage space 34 in the courtyard 12 of the structure 20 that can store rainwater.

Next, the control unit 70 activates the opening/closing member 60, which closes the drain pipe 54. This stops the drainage of rainwater from the stormwater treatment equipment 40 of the structure 10 to the public storm sewer 14. As a result, the rainwater W that falls in the courtyard 12 is stored in the water storage space 34 formed in the courtyard 12.

In this way, in this embodiment, for example, during heavy rain, rainwater W that falls in the courtyard 12 of the structure 20 can be stored in the water storage space 34. As a result, overflow of the public storm drain 14 is suppressed. Therefore, flooding damage (flooding above floor level) in the area where the structure 10 is located, river flooding, etc. can be suppressed.

In addition, rainwater that falls on the roof 20R of the structure 20 flows back from the storm water manholes 46A, 46B through the drain pipe 48 and the courtyard drain pipe 52, and then through the courtyard drain outlet 50 into the water storage space 34, where it is stored. This further prevents the public storm water pipe 14 from overflowing.

Furthermore, in this embodiment, a water storage space 34 is formed in the courtyard 12 using multiple waterproof shutters 30. Therefore, in this embodiment, unlike when building a rainwater storage tank underground, there is no need to excavate the ground G, improving workability.

Moreover, in this embodiment, the courtyard 12 also serves as the water storage space 34. As a result, this embodiment allows for more effective use of space than when a rainwater tank is provided in the structure 20. Also, in this embodiment, because the water storage space 34 is formed in the courtyard 12, the amount of water that can be stored can be increased compared to when a water storage space is formed within a bridge pier, as in prior art (see, for example, Patent Document 2).

In addition, during normal times other than heavy rain, the waterproof shutter 30 can be stored in the storage section 32, eliminating the water storage space 34 from the courtyard 12. This allows the effective space of the courtyard 12 to be expanded.

Furthermore, a drain pipe 48 is connected to the water storage space 34 via a courtyard drain pipe 52. As a result, after the heavy rain has passed, the control unit 70 operates the opening/closing member 60 to open the drain pipe 54, and the rainwater W stored in the water storage space 34 is drained into the public storm sewer 14 via the courtyard drain pipe 52 and the drain pipes 48 and 54. This makes it easy to drain the rainwater W stored in the water storage space 34.

Furthermore, the waterproof shutter 30 also serves as a shutter for opening and closing the opening 28 of the balcony 24 on the first floor 20F1 of the structure 20. Therefore, in this embodiment, costs can be reduced compared to providing a dedicated waterproof shutter for the water storage space 34 on the first floor 20F1 of the structure 20.

Second Embodiment
Next, a second embodiment will be described. In the second embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

As shown in Figures 4 and 5, the structure 10 according to the second embodiment includes a stormwater treatment facility 80. The stormwater treatment facility 80 includes multiple rain gutters 82, a filter tank 84, and a treated water storage tank 86.

Multiple rain gutters 82 are arranged in the courtyard 12 of the structure 20. The rain gutters 82 are drainage pipes that extend vertically. The upper ends of these rain gutters 82 are connected to roof drainage outlets (not shown) formed on the roof 20R of the structure 20. Meanwhile, the lower ends of the rain gutters 82 are connected to a filter tank 84 buried in the ground G of the courtyard 12. As a result, rainwater that falls on the roof 20R is drained into the filter tank 84 via the rain gutters 82.

The filter tank 84 is buried in the ground G below the courtyard 12. This filter tank 84 filters the rainwater W that has seeped into the ground G from the courtyard 12 and removes suspended matter from the rainwater W. A treated water storage tank 86 is provided below the filter tank 84.

The treated water storage tank (purified water storage tank) 86 is buried in the ground G below the filtration tank 84. This treated water storage tank 86 stores filtered water (treated water) W that has been filtered in the filtration tank 84. The treated water storage tank 86 is also connected to a rainwater manhole 46A via a drain pipe 88. The treated water storage tank 86 is provided with an opening/closing member 60 that opens and closes the drain pipe 88.

The treated water storage tank 86 is connected to an elevated water tank 91, which is installed on the roof 20R or other location of the structure 20, via an indoor water supply pipe 90. A pump 92 is also installed in the indoor water supply pipe 90. By operating this pump 92, filtered water W is supplied from the treated water storage tank 86 to the elevated water tank 91 via the indoor water supply pipe 90.

The treated water storage tank 86 is also connected to an outdoor water supply device 96, such as a faucet, via an outdoor water supply pipe 94. A pump 98 is also provided on the outdoor water supply pipe 94. By operating this pump 98, filtered water W is supplied from the treated water storage tank 86 to the outdoor water supply device 96 via the outdoor water supply pipe 94.

The filtered water W stored in the treated water storage tank 86 is used, for example, for toilets, watering plants, etc.

(effect)
Next, the operation of the second embodiment will be described.

In the structure 10 according to this embodiment, a filter tank 84 and a treated water storage tank 86 are buried in the ground G beneath the courtyard 12. As a result, rainwater W that falls on the courtyard 12 is filtered in the filter tank 84 and then stored in the treated water storage tank 86.

In addition, multiple rain gutters 82 are installed in the courtyard 12. As a result, rainwater W that falls on the rooftop 20R is drained via the multiple rain gutters 82 into the filtration tank 84, where it is filtered and then stored in the treated water storage tank 86.

Here, the structure 20 is connected to the treated water storage tank 86 via an indoor water supply pipe 90, and an outdoor water supply unit 96 is connected via an outdoor water supply pipe 94. This allows the rainwater (filtered water) W that falls on the courtyard 12 and rooftop 20R of the structure 20 to be reused.

In addition, the treated water storage tank 86 is connected to a storm water manhole 46A via a drain pipe 88. As a result, when the amount of filtered water W stored in the treated water storage tank 86 exceeds a predetermined value, the filtered water W is discharged into the public storm water pipe 14 via the drain pipe 88, the storm water manhole 46A, and the drain pipe 54.

When the precipitation forecast received by the receiving unit exceeds a predetermined value, the control unit 70 of this embodiment first activates and deploys the multiple waterproof shutters 30 on the first floor 20F1 of the structure 20, as shown in FIG. 5. This creates a water storage space 34 in the courtyard 12 of the structure 20 that can store rainwater W.

Next, the control unit 70 activates the opening/closing member 60, which closes the drain pipe 88. This stops the discharge of filtered water W from the treated water storage tank 86 to the public storm sewer 14. As a result, rainwater W that falls on the courtyard 12 and rooftop 20R is stored in the water storage space 34 formed in the courtyard 12. This prevents the public storm sewer 14 from overflowing. This makes it possible to prevent flooding damage (flooding above floor level) in the area where the structure 10 is located, river flooding, etc.

The rainwater W stored in the water storage space 34 is filtered in the filter tank 84 and then stored in the treated water storage tank 86. The filtered water (rainwater) W stored in the treated water storage tank 86 is then supplied to the indoor water supply pipe 90 and the outdoor water supply device 96 by operating the pumps 92 and 98. Therefore, for example, during recovery after heavy rain has passed, the filtered water W stored in the treated water storage tank 86 can be easily reused.

(Modification)
Next, modifications of the above-described embodiment will be described. Note that, although various modifications will be described below using the above-described first embodiment as an example, these modifications can also be applied to the above-described second embodiment as appropriate.

In the first embodiment described above, the water storage space 34 is formed by the waterproof shutter 30 provided on the first floor 20F1 of the structure 20. However, it is also possible to provide waterproof shutters on the verandas 24 on the second and third floors of the structure 20, for example, and use these waterproof shutters to form a water storage space across multiple floors of the structure 20. In this case, for example, the control unit 70 appropriately deploys the waterproof shutters on the second and third floors of the structure 20 in accordance with the precipitation forecast received by the receiving unit. This prevents the overflow of rainwater stored in the water storage space.

In addition, in the first embodiment described above, the waterproof shutter 30 serving as a water-blocking member is arranged along the outer surface of the waist wall 26 of the balcony 24 when deployed. However, the waterproof shutter may also be arranged along an exterior material such as an exterior wall or sash of the structure 20 facing the courtyard 12, or opposite the exterior material when deployed. Furthermore, a water-blocking member such as a water shield plate or waterproof sheet may also be arranged along an exterior material of the structure 20 facing the courtyard 12, or opposite the exterior material. The balcony 24 may be omitted.

Furthermore, in the first embodiment described above, a waterproof shutter 30 is used as the waterproof member. However, as in the modified example shown in Figure 6, a wavy water shielding plate (waterproof plate) 110 may also be used as the waterproof member.

Specifically, the water shielding plate 110 is formed from a metal plate, a resin plate, or the like that is water-proof and pressure-resistant (water pressure resistant). This water shielding plate 110 is installed, for example, in the passageway 100 on the first floor 20F1 of the structure 20 that leads to the courtyard 12.

The water shielding plate 110 is housed in a recessed storage section 102 formed in the floor of the passageway 100 so that it can be raised and lowered. The water shielding plate 110 is housed in the storage section 102 in a horizontal position. When the water shielding plate 110 is housed in the storage section 102, the water shielding plate 110 forms part of the floor of the passageway 100.

A lifting arm 112 is connected to the water shielding plate 110. The lifting arm 112 is unfoldably housed in the housing section 102. The lifting arm 112 is, for example, electrically operated and is operated by a control section (not shown). When the lifting arm 112 is operated, one end of the water shielding plate 110 is lifted, causing the water shielding plate 110 to tilt relative to the floor. As a result, the water shielding plate 110 seals off the passageway 100, and a water storage space 34 capable of storing rainwater W is formed in the courtyard 12.

The water barrier is not limited to the undulating type, but may also be a sliding type, swing type, or removable type.

Also, for example, as in the modified example shown in Figure 7, the water-blocking member may be pressure-resistant glass 124 facing the courtyard 122 of the structure 120. Specifically, the pressure-resistant glass 124 is water-blocking and pressure-resistant (water pressure resistant). This pressure-resistant glass 124 is fitted into a window frame 126 facing the courtyard 122. By surrounding the courtyard 122 with these pressure-resistant glasses 124, a water storage space 34 is formed in the courtyard 122.

Note that the pressure-resistant glass 124 is not limited to glass, but also includes transparent resin glass such as acrylic glass. The pressure-resistant glass 124 may be either a fixed type or an openable type.

Although not shown in the figures, the water-blocking member may also be a waterproof door, etc. Furthermore, the water storage space may be formed by appropriately combining the various water-blocking members mentioned above.

In addition, in the first embodiment described above, drain pipes 48, 54 are connected to the water storage space 34 via the courtyard drain pipe 52. However, it is not necessary to connect a drain pipe to the water storage space. If a drain pipe is not connected to the water storage space, rainwater stored in the water storage space can be drained, for example, by a drain hose attached to the water storage space.

Furthermore, in the first embodiment described above, the structure 20 is formed in a rectangular ring shape in a plan view. However, for example, as in the modified example shown in Figure 8, the structure 130 of the structure 10 may be formed in a C-shape (U-shape) having an opening 132 in a plan view.

A courtyard 134 is formed inside the structure 130. In this case, a water storage space can be formed in the courtyard 134 by sealing off the opening 132 with the aforementioned undulating water barrier 110 (see Figure 6) or other water barrier material. In addition, multiple rooftop drainage outlets 42 are formed on the roof 130R of the structure 130.

In addition, in the first embodiment described above, the control unit 70 operates the waterproof shutter 30 and the opening/closing member 60 based on a precipitation forecast. However, the control unit 70 may also operate the waterproof shutter 30 and the opening/closing member 60 based on the actual amount of precipitation in the area where the structure 10 is located. The waterproof shutter 30 and the opening/closing member 60 can also be operated using an operation button, etc.

In addition, in the first embodiment described above, the drain pipe 54 is opened and closed by the opening/closing member 60. However, the opening/closing member may also be used to open and close the courtyard drain pipe 52 and the drain pipes 48 and 54 downstream of the courtyard drain outlet 50. Furthermore, the opening/closing member 60 may be omitted as appropriate.

Furthermore, in the first embodiment described above, rainwater that falls on the rooftop 20R of the structure 20 is configured to be stored in the water storage space 34. However, rainwater that falls on the rooftop 20R of the structure 20 may be drained, for example, into a public storm sewer 14 without being stored in the water storage space 34.

Furthermore, in the first embodiment described above, the ground surface of the courtyard 12 is exposed. However, for example, a concrete floor (concrete floor) may be formed in the courtyard to increase the efficiency of rainwater storage in the water storage space formed in the courtyard.

In addition, in the first embodiment, the courtyard 12 does not have a roof, but the courtyard may be roofed. In this case, for example, rainwater can be supplied from the roof to the courtyard (water storage space) via gutters.

Furthermore, the first embodiment described above can be applied to various structures such as apartment buildings, public facilities, stadiums, and factories.

The above describes one embodiment of the present invention, but the present invention is not limited to this embodiment. One embodiment and various modified examples may be used in appropriate combination, and the present invention can of course be implemented in various forms without departing from the spirit of the present invention.

10 Structure 12 Courtyard 18 Drainage pipe 20 Structure 30 Waterproof shutter (waterproof member)
32 Storage section 34 Water storage space 48 Drain pipe 52 Courtyard drain pipe (drain pipe)
54 Drain pipe 60 Opening and closing member 88 Drain pipe 102 Storage section 110 Water shield plate (water shield member)
120 Structure 122 Courtyard 124 Pressure-resistant glass (waterproof member)
130 Structure 134 Courtyard

Claims (5)

A structure having an open or covered courtyard and exterior materials facing the courtyard;
a water-blocking member that surrounds the courtyard and forms a water storage space in the courtyard;
a housing portion that houses the water-blocking member;
A structure comprising: The water-blocking member includes at least one of a waterproof shutter and a water-blocking plate.
The structure of claim 1 . A structure having an open or covered courtyard and exterior materials facing the courtyard;
a water-blocking member that surrounds the courtyard and forms a water storage space in the courtyard;
Equipped with
The water-blocking member includes at least one of a waterproof shutter and a water-blocking plate.
structure. A structure having an open or covered courtyard and exterior materials facing the courtyard;
a water-blocking member that surrounds the courtyard and forms a water storage space in the courtyard;
Equipped with
The water-blocking member includes pressure-resistant glass facing the courtyard.
structure. a drainage pipe connected to the courtyard for draining rainwater from the courtyard;
An opening/closing member provided on the drain pipe for opening and closing the drain pipe;
The structure according to any one of claims 1 to 4, comprising: