Shelter for tsunami

Abstract

To provide a tsunami shelter that does not take time and effort to construct, including the cost of the structure, and can protect lives with a high probability from the occurrence of a tsunami until a predetermined time has elapsed. 【Solution means】A shelter body 2 that can secure a living space S inside with at least the upper part sealed, and an outer wall part 3 that surrounds the periphery of the shelter body 2 and interferes with at least the mechanical effects on the shelter body 2 caused by the hydraulic force and flowing objects generated by the tsunami. The outer wall part 3 is supported by the ground or the like, and the shelter body 2 and the outer wall part 3 are configured as separate structures.

Description

Technical Field

[0001] The present invention relates to a tsunami shelter that can be evacuated during the occurrence of a tsunami.

Background Art

[0002] Tsunamis caused by major earthquakes or the like rush towards the land at a terrifying speed and may cause buildings such as houses to collapse. To escape from such a tsunami, it is necessary to evacuate to a place higher than the tsunami arrival point. However, it is difficult to evacuate in places without high ground nearby, or for children, the elderly, and disabled people alone. In addition, evacuation facilities are generally provided in remote locations. Considering the speed of the above-mentioned tsunami, not only the elderly and those with difficulty walking, but also healthy people and evacuation guides are likely to be left behind. Therefore, it cannot be said to be sufficient as a measure to suppress human casualties during a tsunami.

[0003] In response to such problems, shelters that can be installed near residences have been developed for the purpose of securing an evacuation place that can be evacuated in a short time close to the living environment of residents (see Patent Document 1). The shelter described in Patent Document 1 is composed of an airtight outer shell having a living room space inside. An opening that allows people to enter and exit is provided on the front side of the side portion of the outer shell, and the living room space is provided at a position above the upper end of the opening.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The shelter as described in Patent Document 1 is such that the water level of the water flowing in from the opening does not rise above the upper end of the opening, the air inside the shelter does not flow out, and the intrusion of water into the living space is prevented, enabling life support for a predetermined time. However, it is necessary to endow the shelter itself, including the part for securing air, with durability against the water pressure of a tsunami and the sediment washed away by a tsunami, and there are problems such as the construction taking time and effort including the cost of the structure. Also, in the case of a conventional structure where sand, wood, etc. accumulate so as to block the opening, there is a risk that people cannot escape from or be rescued quickly from the tsunami shelter, and there is also a pointed out that the effect of protecting human lives from the time of the tsunami occurrence until a predetermined time has elapsed is not sufficient.

[0006] The present invention has been made paying attention to such problems, and an object thereof is to provide a tsunami shelter that does not take time and effort in construction including the cost of the structure and can protect human lives with a high probability from the time of the tsunami occurrence until a predetermined time has elapsed.

Means for Solving the Problems

[0007] In order to solve the above problems, the tsunami shelter of the present invention includes a shelter body at least the upper part of which is sealed and can secure a living space inside, and an outer wall part surrounding the periphery of the shelter body that interferes with at least the mechanical influence on the shelter body caused by the hydraulic force generated by a tsunami and flowing objects, the outer wall part is supported by the ground or the like, and the shelter body and the outer wall part are configured as separate structures. According to this feature, the shelter body ensures the living space inside without the air inside the shelter flowing out even during a tsunami, and the outer wall part supported by the ground or the like protects the shelter body from the pressure of the tsunami and the collision of flowing objects such as rubble washed away by the tsunami. Since the structure having the living space and the protective structure are configured separately in this way, it does not take time and effort in construction including the cost of the structure, and can protect human lives with a high probability from the time of the tsunami occurrence until a predetermined time has elapsed.

[0008] A communication port penetrating laterally is formed in the outer wall portion. An entrance is formed in the lower side of the living space of the shelter body. It is characterized in that the communication port of the outer wall portion and the entrance of the shelter body are positioned in a communicating state. According to this feature, after the tsunami has receded, it is possible to quickly escape from the tsunami shelter through the communication port of the outer wall portion from the entrance of the shelter body, and it is possible to protect lives with a high probability when a tsunami occurs.

[0009] The shelter body is installed inside the outer wall portion so as to be movable in the vertical direction with respect to the outer wall portion. According to this feature, after a tsunami occurs, the tsunami shelter can be moved, and an opportunity for people to quickly escape can be obtained, and it is possible to protect lives with a high probability when a tsunami occurs.

[0010] The shelter body is installed inside the outer wall portion so as to be movable in the vertical direction with respect to the outer wall portion and non-rotatable. According to this feature, it is possible to surely ensure the communicating state between the communication port of the outer wall portion and the entrance of the shelter body.

[0011] The outer wall portion and the shelter body are connected by a connecting device that can be engaged and disengaged. According to this feature, it is possible to prevent the shelter body from being inadvertently separated from the outer wall portion when a tsunami occurs.

[0012] The outer wall portion is characterized by having a flange portion extending outward at the lower end portion. According to this feature, the flange portion at the lower end portion of the outer wall portion is integrated with the ground or the like, and it is possible to prevent the outer wall portion from being washed away by a tsunami.

[0013] The outer wall portion is characterized in that the lower part of the shelter body is open and water can flow downward. According to this feature, the seawater that has flowed into the space between the shelter main body and the outer wall can be quickly discharged into the ground.

[0014] The shelter main body is characterized in that its upper part is in a dome shape. According to this feature, the impact resistance of the upper part of the shelter main body facing the upper opening of the outer wall part can be enhanced.

[0015] The shelter main body is characterized in that its upper end is installed inside the outer wall part so as to be located below the upper end of the outer wall part. According to this feature, the outer wall part supported by the ground or the like can reliably protect the shelter main body from the pressure of a tsunami and the impact of flowing objects such as debris washed away by the tsunami.

[0016] The shelter main body is provided with a cylindrical part extending downward from the floor board of the living space, and the tip of the cylindrical part constitutes the entrance / exit. According to this feature, the water level of the seawater pressing downward below the floor board of the living space is pushed downward by the air pressure inside the cylindrical part and does not exceed the tip of the cylindrical part, effectively preventing flooding of the living space.

[0017] The outer wall part is mainly formed of concrete, The shelter main body is mainly formed of synthetic resin and is characterized by having a suspended support part at the upper part. According to this feature, by forming the outer wall part with concrete, it can withstand the pressure of a tsunami and the impact of debris, buildings, ships, etc. washed away by the tsunami. The shelter main body protected by the outer wall part can be formed in a lightweight manner with synthetic resin, reducing the external force required to separate it upward.

[0018] The outer wall part is characterized in that it is installed in at least a partially buried state in the ground or the like. According to this feature, during a tsunami, the buried part of the outer wall part is less affected by the tsunami, and the construction cost such as the outer wall part and the foundation work can be reduced.

Brief Description of the Drawings

[0019]

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Mode for Carrying Out the Invention

[0020] The mode for carrying out the tsunami shelter according to the present invention will be described below based on examples.

Examples

[0021] The tsunami shelter according to Embodiment 1 will be described with reference to FIGS. 1 to 6. Reference numeral 1 in FIG. 1 is a tsunami shelter (hereinafter referred to as a shelter) to which the present invention is applied. The shelter 1 is an evacuation shelter mainly arranged near a residence (not shown) built along the sea, and is mainly composed of a shelter body 2 and an outer wall portion 3 that supports the shelter body 2.

[0022] As shown in FIG. 2, the shelter body 2 is mainly integrally formed of fiber-reinforced plastic, has a substantially bell shape with a dome-shaped upper end, and has a substantially circular shape in plan view. The shelter body 2 is provided with a horizontal floor board 4 at the lower part, and a living space S is formed above the floor board 4.

[0023] Further, a cylindrical portion 5 extends downward on the outer edge side of the floor board 4, and the hollow space of the cylindrical portion 5 communicates with the living space S. The opening at the lower end of the cylindrical portion 5 constitutes an entrance / exit 6 of the living space S. The living space S of the shelter body 2 has airtightness without ventilation openings except for this entrance / exit 6.

[0024] The floor board 4 is provided above the lower end 7a of the peripheral wall portion 7, and the shelter body 2 has a raised floor structure with a space above the floor board 4. Further, an opening 8 is formed in a part of the circumferential direction of the peripheral wall portion 7. The opening 8 is formed to be open from the floor board 4 to the lower end 7a of the peripheral wall portion 7 near the entrance / exit 6.

[0025] A rib portion (protrusion) 9 is formed at the central portion in the vertical direction of the peripheral wall portion 7. The rib portion 9 has a longitudinal direction along the circumferential direction, which is not shown here. Further, a protruding portion 11 that protrudes outward is formed at the central portion in the vertical direction of the peripheral wall portion 7, spaced apart from the rib portion 9 in the circumferential direction.

[0026] A suspended support portion 12 having a handle shape is provided at the upper end portion of the shelter body 2. A crane hook or the like of a crane described later can be hooked on the suspended support portion 12.

[0027] The outer wall portion 3 is mainly made of reinforced concrete. The outer wall portion 3 includes an upright portion 13 that is endless and annular and has an upper opening 3a, a flange portion 14 that extends outward from the lower end portion of the upright portion 13, and an approach portion 15. A communication port 16 is formed in a part of the circumferential direction of the upright portion 13. The inner edge shape of the upright portion 13 is substantially the same as the outer edge shape of the peripheral wall portion 7 of the shelter body 2, and is formed to be slightly larger than the peripheral wall portion 7 of the shelter body 2. That is, the shelter body 2 is loosely fitted inside the upright portion 13 of the outer wall portion 3.

[0028] As shown in FIG. 3, a support portion 17 is formed to protrude from a part of the circumferential direction of the inner peripheral surface of the upright portion 13 of the outer wall portion 3. The support portion 17 has a longitudinal direction along the circumferential direction, and the rib portion 9 formed on the peripheral wall portion 7 of the shelter body 2 is placed thereon. That is, the load of the shelter body 2 is supported by the support portion 17 of the outer wall portion 3 via the rib portion 9. In addition, instead of the rib portion 9 having a longitudinal direction in the circumferential direction on the shelter body 2, a plurality of convex portions spaced apart in the circumferential direction of the peripheral wall portion 7 may be provided. Similarly, instead of the support portion 17 having a longitudinal direction in the circumferential direction on the outer wall portion 3, a plurality of convex portions spaced apart in the circumferential direction may be provided.

[0029] Further, on the upright portion 13 of the outer wall portion 3, a locking portion 18 is formed in a part of the circumferential direction of the inner peripheral surface, spaced apart from the rib portion 9 in the circumferential direction. The locking portion 18 is composed of a pair of guide portions 18a, 18a that extend parallel to each other in the vertical direction of the inner peripheral surface. The guide portions 18a, 18a are slightly larger than the circumferential dimension of the protruding portion 11 formed on the peripheral wall portion 7 of the shelter body 2 and are spaced apart from each other. By arranging the protruding portion 11 between the guide portions 18a, 18a, the relative phase between the shelter body 2 and the outer wall portion 3 is positioned. That is, the protruding portion 11 and the locking portion 18 function as rotation restricting means for the shelter body 2 and the outer wall portion 3. In addition, when the shelter body 2 is not circular in plan view, the protruding portion 11 and the locking portion 18 constituting this rotation restricting means may be omitted.

[0030] In a state where the relative phase between the shelter main body 2 and the outer wall portion 3 is positioned by the above-described rotation restricting means, the communication port 16 formed in the standing portion 13 of the outer wall portion 3 and the opening 8 of the peripheral wall portion 7 of the shelter main body 2 overlap, and through these communication port 16, opening 8, and entrance / exit 6, it becomes possible to take refuge from the outside of the shelter 1 to the inside of the living space S. Further, by the rotation restricting means, since the communication port 16, the opening 8, and the entrance / exit 6 are respectively positioned in a communicating state, it is also possible to quickly escape from the tsunami shelter.

[0031] The approach portion 15 is constituted by three wall portions 15a having a U-shaped configuration in plan view that are arranged so as to surround the periphery of the communication port 16 formed in the standing portion 13 of the outer wall portion 3. The side ends of the pair of left and right wall portions 15a are integrally continuous with the standing portion 13, and the lower ends of the three wall portions 15a are integrally continuous with the flange portion 14. Further, a ladder 15b is provided on one of the wall portions 15a constituting the approach portion 15.

[0032] Both ends of a mooring member 20 are respectively attached to an anchor hook 19 fixed to the upper end portion 13a of the standing portion 13 of the outer wall portion 3 and a suspended portion 12 provided at the upper end portion of the shelter main body 2. That is, the mooring member 20 constitutes a connecting device that connects the upper end portion 13a of the outer wall portion 3 and the upper end portion of the shelter main body 2 with a connecting device.

[0033] The mooring member 20 is configured to include carabiners 20a, 20a at both ends of a chain, and the carabiners 20a, 20a can be attached to and detached from the anchor hook 19 and the suspended portion 12. Incidentally, the mooring member 20 is attached to the anchor hook 19 at the upper end portion of the standing portion of the outer wall portion 3 and the suspended portion 12 provided at the upper end portion of the shelter main body 2, and rescue team members described later can perform the attachment / detachment operation of the carabiners 20a, 20a above the standing portion 13.

[0034] As shown in FIG. 2, the outer wall portion 3 is installed by embedding the flange portion 14 in the ground. Thereby, the outer wall portion 3 is strongly installed with respect to the ground and is not easily washed away by a tsunami. At this time, the outer wall portion 3 is embedded at a depth at which the upper end portion of the wall portion 15a of the approach portion 15 is exposed from the ground. Incidentally, by driving the foundation pile into the ground using the hole 14a (see FIG. 1) formed in the flange portion 14, the outer wall portion 3 becomes even less likely to be washed away by a tsunami.

[0035] As described above, since the structure having the living space and the protective structure are configured separately, it does not take time and effort to construct the shelter 1 including the cost of the building.

[0036] Subsequently, a case where a tsunami actually strikes will be assumed and described. Here, it is assumed and described that the push wave that first reaches the shelter 1 hits from the right side of the screen in FIG. 4, and the pull wave in which the water that has flowed over the shelter 1 returns hits the shelter 1 from the left side of the screen in FIG. 4 after the passage of time.

[0037] Users who have detected the approach of a tsunami based on a tsunami warning or the like take refuge into the living space S through the communication ports 16 formed in the standing portion of the outer wall portion 3, the openings 8 in the peripheral wall portion 7 of the shelter body 2, and the entrances and exits 6 formed in the floor board 4.

[0038] The push wave of the tsunami that reaches the shelter 1 and the returning pull wave hit the standing portion 13 of the outer wall portion 3 with high intensity, and it is possible to prevent damage and breakage of the shelter body 2 installed inside the standing portion 13. Further, since the standing portion 13 of the outer wall portion 3 is circular in plan view, no matter from which direction the push wave coming from the sea side and the pull wave returning from the mountain side hit, the water flow is branched into two directions by the standing portion, and the force directly acting on the shelter 1 by the push wave of the tsunami is attenuated, resulting in less fluid resistance of the water and a low possibility of damage and breakage of the outer wall portion 3 itself.

[0039] As shown in Fig. 2, the entrance / exit of the shelter body 2 is formed below the floor board 4, and the user takes shelter in the living space S from below the entrance / exit 6. The living space S has no ventilation openings or the like except for the entrance / exit 6, and its internal air is structured to stay without escaping to the outside. Therefore, as shown in Fig. 4, even if the living space S is submerged up to below the floor board 4, the internal air of the living space S is compressed to a certain extent, increasing the air pressure to counter the water pressure of the intruding water, so that the water level does not exceed the entrance / exit 6 and the living space S is not flooded. Therefore, the evacuees do not continuously come into contact with water and their body temperature is not directly taken away. In addition, the tip of the cylindrical portion 5 extending downward from the floor board 4 of the living space S constitutes the entrance / exit 6, and the floor board 4 constituting the living space S is formed so as to be surely located above the entrance / exit 6, so that flooding into the living space S is more surely prevented.

[0040] Moreover, since the space surrounded by the standing portion 13 of the outer wall portion 3, that is, the space for supporting the shelter body 2, is open downward, the seawater flowing into the space between the shelter body 2 and the standing portion 13 of the outer wall portion 3 can be quickly discharged into the ground.

[0041] Also, even if the shelter body 2 temporarily floats due to buoyancy when the water level rises, since the upper end portion 13a of the outer wall portion 3 and the upper end portion of the shelter body 2 are connected by the mooring member 20, it is moored without being detached from the outer wall portion 3. Depending on the length of the mooring member 20, the upward movement of the shelter body 2 with respect to the outer wall portion 3 can also be completely prevented.

[0042] In addition, the protruding portion 11 formed on the peripheral wall portion 7 of the shelter body 2 is arranged between the guide portions 18a, 18a formed on the inner peripheral surface of the standing portion 13 of the outer wall portion 3, so that the rotation of the shelter body 2 with respect to the outer wall portion 3 is restricted. Therefore, when a tsunami strikes, the shelter body 2 does not rotate with respect to the outer wall portion 3, and the habitability in the living space S is excellent.

[0043] Fig. 5 shows a state where about 3 hours have passed since the first wave of the tsunami and the tsunami has receded, and sediment carried by the tsunami has accumulated around the shelter 1.

[0044] It is preferable that the user notifies the rescue team of their location information by sending a distress signal using a communication terminal or the like in the living space. The rescue team that has confirmed the existence of the shelter 1 first disengages the carabiners 20a, 20a (see FIG. 1) of the mooring member 20 from at least one of the anchor hook 19 and the suspended portion 12. Next, the crane hook CF of the crane C is hooked onto the suspended portion 12 at the upper end of the shelter body 2 and lifted. As a result, the shelter body 2 can be separated upward from the outer wall portion 3, and the user can safely escape from the entrance / exit 6 of the shelter body 2.

[0045] At this time, since the guide portions 18a, 18a of the outer wall portion 3 constituting the rotation restricting means are long in the vertical direction, when the shelter body 2 is lifted, the protruding portions 11 of the shelter body 2 are guided into the guide portions 18a, 18a. Therefore, the shelter body 2 does not rotate with respect to the outer wall portion 3 when it is lifted, and it is possible to prevent adverse effects such as the user in the living space falling or feeling unwell.

[0046] Further, the load of the shelter body 2 is supported by the support portion 17 of the outer wall portion 3 by the rib portion 9 provided at the central portion in the vertical direction of the peripheral wall portion, that is, the shelter body 2 is supported in a state where the lower end 7a of the peripheral wall portion 7 floats from the outer wall portion 3. Therefore, regardless of the height dimension in the vertical direction of the outer wall portion 3 required to be sufficiently buried in the ground, the living space S can be arranged at a high position with respect to the outer wall portion 3.

[0047] Further, the shelter body 2 is characterized in that its upper end portion is installed inside the outer wall portion 3 so as to be located below the upper end portion 13a of the outer wall portion 3. Therefore, the outer wall portion 3 supported by the ground or the like can surely protect the shelter body 2 from the impact of the pressure of a tsunami or flowing objects such as rubble washed away by the tsunami.

[0048] Since the outer wall portion 3 is made of reinforced concrete, it can be given strength to withstand the pressure of tsunamis, the impact of debris, buildings, ships, etc. washed away by tsunamis by a simple construction method. On the other hand, since the shelter body 2 is mainly formed of fiber-reinforced plastic, it can be formed lightweight, and the external force required to separate it upward can be reduced. Since the outer wall portion 3 and the shelter body 2 can be formed with a simple structure in this way, the shelter 1 can be quickly constructed in an area where the influence of tsunamis is a concern.

Example

[0049] The tsunami shelter according to Example 2 will be described with reference to FIGS. 7 to 9. The same components as those in the above Example 1 are denoted by the same reference numerals, and redundant descriptions are omitted.

[0050] In a part of the circumferential direction of the upright portion 13 of the outer wall portion 23 in the shelter 21 shown in FIG. 7, a long hole-shaped opening 26 extending in the vertical direction is formed.

[0051] As shown in FIG. 8, at the lower end of the upright portion 13 of the outer wall portion 23, a bottom surface portion 25 is provided. The bottom surface portion 25 extends to the outside of the upright portion 13, and the portion outside the upright portion 13 constitutes a flange portion 24. At substantially the center of the bottom surface portion 25, a column 27 standing upright in the vertical direction is provided. The column 27 has a thread on its outer peripheral surface, and a rotating member 28 is screwed thereon.

[0052] The rotating member 28 includes a support portion 28a disposed below the floor board 4 of the shelter body 22 and an operation portion 28b disposed inside the living space of the shelter body 22, and a bearing 29 is provided between the support portion 28a and the lower surface of the floor board 4. Specifically, the rotating member 28 is disposed through a hole 4a formed in the floor board 4 of the shelter body 22. Although not shown here, the hole 4a formed in the floor board 4 of the shelter body 22 and the rotating member 28 are relatively rotatable while maintaining a sealed state using a mechanical seal or the like.

[0053] When the user rotates the operation part 28b of the rotating member 28, for example, in the reverse direction in the living room space S, the screwing position between the rotating member 28 and the thread of the support column 27 moves, and accordingly, the shelter body 22 rises. At this time, since the opening 26 formed in the standing part 13 of the outer wall part 23 is a long hole having a longitudinal direction in the vertical direction, even when the shelter body 22 rises to the upper end, the opening 26 always communicates with the opening 8 in the peripheral wall part 7 of the shelter body 22.

[0054] According to this, the user can move the opening 8 in the peripheral wall part 7 of the shelter body 22 and the entrance 6 formed in the floor board 4 of the living room space S to a position higher than the earth and sand deposited around the shelter 21, and can escape by himself / herself. In addition, even if the earth and sand are deposited above the upper end of the opening 26 formed in the standing part 13 of the outer wall part 23, by raising the shelter body 22, the earth pressure of the earth and sand near the opening 8 and the opening 26 is reduced, so that it is easy to remove the earth and sand manually.

[0055] As described above, the embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and even if there are changes and additions within the scope not departing from the gist of the present invention, they are included in the present invention.

[0056] The outer wall part 3 and the outer wall part 23 may have a split structure. For example, as in the first modification example shown in FIG. 10, a plurality of divided bodies 330 having a bottom part 331 and a standing part 332 orthogonal to each other are arranged in a plurality of rings, and the outer wall part 33 may be configured by fixing each bottom part 331 to a disk-shaped bottom body 34. In the case of this configuration, the standing part of the divided body 330 constitutes the standing part 130 of the outer wall part 33, and the bottom part of the divided body 330 and the bottom body 34 together constitute the flange part 140 of the outer wall part 33. In addition, a drain hole 34a penetrating vertically is formed in the bottom body 34.

[0057] Further, as in the second modification example shown in FIG. 11, a configuration may be adopted in which a plurality of shelter bodies 42 are supported by one outer wall portion 43. A plurality of openings 46 are formed in the standing portion 230 of the outer wall portion 43, and a plurality of groove portions 45 are formed inside the opposing standing portion 230. The shelter body 42 has convex portions 44, 44 that engage vertically with a pair of opposing groove portions 45, 45, preventing collision between adjacent shelter bodies 42.

[0058] Further, as in the third modification example shown in FIGS. 12 and 13, a plurality of plate bodies 530 made of metal, such as sheet piles, may be erected with respect to the bottom body 54 to form the outer wall portion 53. In this third modification example, the bottom body 54 is made of concrete, and when the bottom body 54 is placed, the plurality of plate bodies 530 are respectively stabbed, and the plate bodies 530 are integrally fixed to the bottom body 54. As shown in FIG. 13, a plurality of convex portions 42a extending in the vertical direction are provided at a plurality of locations on the outer peripheral surface of the shelter body 52, and these convex portions 42a can contact the side end portions of the adjacent plate bodies 530 spaced apart in the circumferential direction, constituting rotation restricting means.

[0059] Note that the bottom body 54 may be omitted, and the plate bodies 530 may be directly buried and supported on the solidified ground.

[0061] Further, the outer wall portion is not limited to being formed of reinforced concrete, and may be formed of, for example, metal or synthetic resin. Similarly, the shelter body is not limited to fiber-reinforced plastic, and may be formed of, for example, metal or another resin material having translucency. When a translucent material is adopted, light outside the shelter can also be taken in.

[0062] Further, the shelter body and the outer wall portion are not limited to being substantially circular in top view, and may be, for example, elliptical or rectangular, and the configuration is not limited to the shelter body and the outer wall portion being of the same shape in top view.

[0063] As long as the shelter body 2 has a structure in which at least the upper part is sealed to secure a living space inside, its structure is not limited. For example, a plurality of entrances and exits may be formed below the living space.

Explanation of Signs

[0064] 1 Shelter 2 Shelter body 3 Outer wall part 3a Upper opening 4 Floor board 5 Cylindrical part 6 Entrance and exit 7 Peripheral wall part 7a Lower end 8 Opening 9 Ridge part 11 Protrusion 12 Suspended support part 13 Upright part 13a Upper end part 14 Flange part 15 Approach part 15a Wall part 15b Ladder 16 Communication port 17 Support part 18 Locking part 18a,18a Guide part 19 Anchor hook 20 Mooring member 20a,20a Carabiner 21 Shelter 22 Shelter body 23 Outer wall part 24 Flange part 25 Bottom surface part 26 Opening 27 Support column 28 Rotating member 28a Support part 28b Operating part 29 Bearing 33 Outer wall part 34a Hole 34 Bottom body 42 Shelter body 43 Outer wall part 44,44 Protrusion 45 Groove part 46 Opening 52 Shelter body 52a Protrusion 53 Outer wall part 54 Bottom body 130 Upright part 140 Flange part 230 Upright part 330 Divided body 331 Bottom part 332 Upright part 332 Bottom part 530 Plate body C Crane CF Crane hook S Living room space

Claims

1. The shelter comprises a shelter body, at least the upper part of which is sealed to secure a living space inside, and an outer wall portion surrounding the periphery of the shelter body, which at least prevents the mechanical influence of hydraulic forces and floating objects generated by tsunamis on the shelter body. A tsunami shelter characterized in that the outer wall portion is supported on the ground, the shelter main body and the outer wall portion are constructed as separate structures, the outer wall portion and the shelter main body are connected by a connecting device, the shelter main body is sealed except for the lower portion of the shelter main body where the living space is connected to the outside air, and when the water level rises, compressed air remains in the sealed living space at the upper part of the shelter main body, generating buoyancy that raises the shelter main body, and the connecting device prevents the shelter main body from detaching from the outer wall portion due to the buoyancy.

2. A communication port is formed in the outer wall portion so as to penetrate laterally, The shelter body has an entrance formed on the lower side of the living space, A tsunami shelter as described in claim 1, characterized in that the communication opening of the outer wall portion and the entrance / exit of the shelter body are positioned in a communicating state.

3. 2. A tsunami shelter as described in claim 1, characterized in that the outer wall portion has a flange portion extending outward at its lower end.

4. A tsunami shelter as described in claim 1, characterized in that the outer wall portion has an open bottom portion of the shelter body, allowing water to flow downward.

5. A tsunami shelter as described in claim 1, characterized in that the upper part of the shelter body is dome-shaped.

6. A tsunami shelter as described in claim 1, characterized in that the shelter body is installed inside the outer wall so that its upper end is located lower than the upper end of the outer wall.

7. The exterior wall portion is mainly formed of concrete, A tsunami shelter as described in any one of claims 1 to 6, characterized in that the shelter body is mainly made of synthetic resin and has a hanging support part at the upper part.

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