JP3182310U - Tsunami evacuation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tsunami evacuation device in which a large load is not applied in a rotating direction to a connecting portion between a floating island structure and a guide pole due to a tsunami pressure, and the floating island structure is smoothly guided by the guide pole when a tsunami strikes To do.
A floating island structure 8 has a hollow columnar shape, a space capable of accommodating a large number of people is formed on an upper plate portion, and a tubular portion is formed through an internal space portion. Seawater is introduced into the water storage container 4 from the seawater intake. A plurality of guide rolling elements are provided on the tubular portion side of the floating island structure 8, and the curved surface of each guide rolling element is in point contact with the peripheral surface of the guide pole 6, and the floating island structure 8 is in contact with the guide pole 6. It can be raised and lowered freely.
[Selection] Figure 1

Description

  The present invention relates to a tsunami evacuation device that can be used as an evacuation site when a tsunami occurs.

Floating tsunami evacuation boats are known in the art that float when a tsunami comes along a core pillar standing on the ground and protect the residents who have evacuated to the float from tsunami damage (see, for example, Patent Document 1) ).
In addition, a float-type tsunami refuge having a configuration in which an evacuation platform can be lifted along a strut driven into the ground by float buoyancy is known (see, for example, Patent Document 2).

JP 2012-188924 A JP 2006-112089 A

A conventional tsunami evacuation device has a structure in which a float levitated by seawater is supported so as not to rotate on a support column extending upward. When the float rises due to the tsunami, a large rotational pressure is applied to the float due to the wave force, and this pressure causes a large frictional force at the joint between the float and the support.
Therefore, there is a problem that the float does not float smoothly. Also, when a heavy floating object collides with the float, if the float does not rotate, its impact force is large and acts on the float, which is extremely dangerous. For this reason, the mechanism of the connecting portion between the float and the support column must be firmly configured, and there is a problem that the construction cost and the material cost are high and the cost is high.
The present invention aims to solve the above problems.

To achieve the above object, the present invention has a guide pole having a circular peripheral surface and extending vertically upward with respect to the ground, and a hollow body, and a large number of human beings above the body. An evacuation upper plate portion is disposed for accommodating a floating island structure, a tubular portion is formed through a space portion inside the trunk portion, and the tubular portion is fitted into the guide pole. , A plurality of guide rolling elements are rotatably provided on the tubular portion side, the curved surface of each guide rolling element is brought into point contact with the peripheral surface of the guide pole, and the body portion of the floating island structure is used as the guide pole. On the other hand, it is characterized in that it can be raised and lowered freely.
The present invention also includes a circular bottom wall portion and a cylindrical peripheral wall portion erected on the periphery of the bottom wall portion, which are fitted and arranged in a hole dug in a hill near the sea. A water storage container having a seawater intake port and a pipe for guiding the seawater to the seawater intake port of the water storage container, and the bottom wall of the water storage container with the lower part of the guide pole buried deep underground The floating island structure is arranged in the center of the reservoir, and the floating island structure is disposed in the water storage container.
The present invention is characterized in that the floating island structure is supported at a predetermined height from the ground.
The present invention is characterized in that a streamlined block having a rudder and a tapered tip is provided at the bottom of the floating island structure.
Further, the present invention is characterized in that the body of the floating island structure is filled with a floating material.
In the present invention, the upper plate portion for evacuation is configured separately from the trunk portion of the floating island structure so as to be rotatable with respect to the trunk portion of the floating island structure, and the upper plate portion for evacuation is prevented from rotating. It is characterized by being attached to the guide pole through a mechanism so as to be movable up and down.

  Since the trunk of the floating island structure is rotatable relative to the guide pole, the present invention can prevent a large load from being applied in the rotational direction between the floating island structure and the guide pole. Can rise smoothly along the guide pole.

It is a whole external appearance explanatory view of this device. It is a whole external appearance explanatory view of this device. It is a section explanatory view of this device. It is a top view of a floating island structure. It is a section explanatory view of this device. It is a bottom view of a floating island structure. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device. It is external appearance explanatory drawing of other embodiment of this apparatus. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device. It is a section explanatory view of other embodiments of this device.

Hereinafter, a configuration of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows the overall structure of a tsunami evacuation apparatus according to the present invention. The tsunami evacuation device 2 includes a water storage container 4, a multistage guide pole 6 erected perpendicularly to the ground substantially at the center of the bottom of the water storage container 4, and the multistage guide pole 6 And a floating island structure 8 supported so as to be movable up and down and rotatable.

  The water storage container 4 is placed in a hole in a hill 10 that is artificially formed near the coast where the tsunami reaches. The water storage container 4 has a bottom portion 4a made of a waterproof wall material such as a steel plate or concrete, and a peripheral wall portion 4b. The internal space of the container 4 is formed in a substantially cylindrical shape, and the upper part of the interior of the container 4 is open.

The two-stage guide pole 6 includes a cylindrical outer pole 6a having a circular outer peripheral section, and an inner pole 6b slidable in the axial direction through a plurality of rolling elements 14 and 14 on the inner side. In addition, it is rotatably inserted into the outer pole 6a.

The lower part of the outer pole 6a is driven deeply into the ground and is firmly fixed to the ground by a base material. The two-stage guide pole 6 is arranged at the center of the bottom 4 a of the container 4, and the outer pole 6 a passes through a hole formed in the bottom 4 a of the container 4. The fitting portion between the hole in the bottom 4a of the container 4 and the outer pole 6a is sealed by welding or concrete.

  A convex part rising upward is formed at the center of the bottom part 4a of the water storage container 4, and a level difference is formed between the peripheral part and the center at the height of the inner wall surface of the bottom part 4a by the convex part. The floating island structure 8 is disposed in the water storage container 4, and as shown in FIG. 5, a tubular portion 8a integrally provided at the center is inserted and disposed on the outer peripheral surface of the outer pole 6a.

The plurality of rolling elements 14 and 14 rotatably disposed above and below the tubular portion 8a of the floating island structure 8 are elastically contacted with the outer peripheral surface of the outer pole 6a. By the moving body 14, the floating island structure 8 is configured to be movable up and down along the outer pole 6a and to be rotatable.

Each of the rolling elements 14, 14 is held by a rolling element holder provided in the tubular portion 8a of the floating island structure 8 so as to be rotatable about an axis perpendicular to the longitudinal direction of the guide pole 6, The rolling elements 14, 14 are in point contact with the outer peripheral surface of the outer pole 6a elastically from four directions at two positions above and below the tubular portion 8a.

Each rolling element holding body that holds each rolling element 14 is supported by the tubular portion 8a so as to be swingable within a predetermined range, and each has a resilient device, and is urged in one direction by this resilient device.

The floating island structure 8 includes a body portion including a disc-shaped bottom wall portion 8b, and a peripheral wall portion 8c that rises vertically from the edge portion of the bottom wall portion 8b to a predetermined height, and an upper edge of the peripheral wall portion 8c. The evacuation upper plate portion 8d is fixedly disposed so as to be horizontal with the bottom wall portion 8b. The floating island structure 8 is surrounded by the bottom wall portion 8b, the peripheral wall portion 8c, and the evacuation upper plate portion 8d. The inner space thus formed constitutes a floating space for levitation.

Circular openings are formed in the center of the bottom wall 8b and the upper plate 8d for evacuation, and a tubular portion 8a is fixed to the openings. The tubular portion 8a and each opening are fixed by welding. The floating island structure 8 disposed in the water storage container 4 is a plate-like shape fixed to the outer pole 6a in a state where the height of the upper plate part 8d for evacuation and the upper edge of the water storage container 4 coincide. In this state, the bottom surface of the floating island structure 8 is close to the convex portion of the water storage container 4.

At the bottom of the floating island structure 8, three plate-like rudders 18 have a predetermined length in a parallel direction so as to extend parallel to an axis passing through the center of the bottom along the bottom, and predetermined each other. Each rudder 18 has a predetermined vertical width that projects vertically downward from the bottom of the floating island structure 8. A streamline block 20 is provided on the bottom wall 8b of the floating island structure 8 on the side opposite to the side where the rudder 18 is disposed. The streamline block 20 faces the same direction as the rudder 18 and has a tapered tip portion, and the overall shape forms a streamline.

Each rolling element 12 provided below the inner pole 6b is in point contact with the inner peripheral surface of the outer pole 6a. Further, a plurality of rolling elements 22 are rotatably disposed on the inner upper portion of the outer pole 6a, and each rolling element 22 is in point contact with the outer peripheral surface of the inner pole 6b.

The inner pole 6b can be moved up and down along the outer pole 6a and is rotatable by a guide mechanism constituted by the rolling elements 12 on the inner pole 6b side and the rolling elements 22 on the outer pole 6a side.
A stopper 24 is provided on the inner pole 6b side, and a stopper 26 is provided on the outer pole 6a side correspondingly. An unexpected escape cap 28 that engages with the upper end of the tubular portion 8a on the floating island structure 8 side is detachably provided at the upper end of the inner pole 6b.

Stopper mechanisms 30 for maintenance are provided on the left and right of the peripheral wall portion 4b of the water storage container 4, and the stopper 30a can be protruded or retracted from the outside into the container 4 by operating the operation unit from the ground. It is configured as follows.

A plurality of conduits 32 are connected to the lower part of the water storage container 4, and one of the conduits 32 opens to the surface of the hill 10 and serves as a seawater intake 34. A ladder 36 is disposed in the conduit 32 so that a maintenance worker can enter and leave the water storage container 4.

In addition, a water supply / drainage pipe 38 is connected to the bottom of the water storage container 4, and a water supply is connected to the water supply port of the pipe 38 and the water supply / drainage pump 40 is operated, so that the water storage container 4 is externally connected to the water storage container 4 through the pipe 38. Water can be supplied, and the water in the water storage container 4 can be drained to the outside.

  In the figure, reference numeral 42 denotes a reinforcing material for the floating island structure 8, 44 denotes a disaster prevention article case, 46 denotes a safety fence, and 48 denotes a breakwater member, which are provided on the floating island structure 8. The upper plate 8d for evacuation of the usual floating island structure 8 can be used as a hill park, and the flat plane of the evacuation upper plate 8d can be evacuated in units of about 30 to several hundred people. Built in space.

When the tsunami rushes to the floating island structure 8 where the residents have evacuated to the evacuation upper plate 8d, the seawater 50 flows into the water storage container 4 from the seawater intake 34, and the container 4 is filled with seawater. Due to the buoyancy of the seawater that flows into the container 4, the floating island structure 8 rises along the guide pole 6 according to the height of the tsunami.

Depending on the direction of the tsunami that pushes in, the direction of the rudder 18 and streamline block 20 causes the floating island structure 8 to be regulated in its direction and to maintain a stable state. When the upper end of the tubular portion 8a of the floating island structure 8 reaches the unexpected escape cap 28 and further rises, the inner pole 6b is pulled out from the outer pole 6a and lifted, and the rolling elements 14, 14 are pulled out. Elastic contact with the outer peripheral surface of 6b.

Since the rolling element 14 on the floating island structure 8 side is in point contact with the guide pole 6, the floating island structure 8 can rotate with respect to the guide pole 6, and the direction thereof is restricted by the rudder 18. Therefore, a large load is not applied to the guide mechanism between the guide pole 6 and the floating island structure 8.

  In carrying out the present invention, the maximum extension height of the guide pole 6 is set based on the prediction of a large tsunami announced by the government. As a safety device when an unexpected tsunami such as an attack of 15m occurs when the prediction is 10m, when the floating island structure 8 rises and the tubular portion 8a exceeds the height of the cap 28, the cap 28 comes off and the floating island structure The body 8 is configured to be detached from the guide pole 6. Thereby, the floating island structure 8 can remove the guide pole 6 and drift by itself, thereby protecting human lives from an unexpected tsunami.

Next, the test operation of this apparatus will be described.
First, with the seawater intake 34 closed, the water supply / drainage pump 38 is driven to the water supply side, the water storage container 4 is filled with water, the floating island structure 8 is levitated to the upper end position, and the floating island structure 8 Check if it emerges normally.

  Next, when the maintenance inside the water storage container 4 is performed, the stopper 30a is protruded in a state where the floating island structure 8 is floated when the above test is performed. In this state, the water supply / drainage pump 38 is driven to the drainage side. When the floating island structure 8 descends as the water in the container 4 decreases, the bottom wall 8b of the floating island structure 8 is locked by the stopper 30a, and the floating island structure 8 is locked at a predetermined ascending position. .

In this state, the water in the water storage container 4 is drawn out by the water supply / drainage pump 38 to empty the inside. Next, the seawater intake 34 is opened, and an operator enters the water storage container 4 and enters under the bottom of the floating island structure 8 to perform maintenance of the apparatus.

  In the above embodiment, the entire floating island structure is rotatable with respect to the guide pole. However, as shown in FIG. The evacuation upper plate portion 50 is rotatable with respect to the upper plate portion 8d fixed to the main body side of the floating island structure 8, and the evacuation upper plate portion 50 is attached to the guide pole 6. It is good also as a structure which does not rotate with respect to it. In FIG. 7, a plurality of grooves 52 are formed on the outer peripheral surface of the guide pole 58 along the longitudinal direction.

A tubular portion 54 is fixed at the center of the upper plate portion 50, and the tubular portion 54 is loosely fitted to a guide pole 58 that is erected from the ground. The rolling part 56 for guides is attached to the tubular part 54 corresponding to the said groove | channel 52 at the upper and lower sides, and these rolling elements 56 for guide are fittingly arranged by the corresponding groove | channel 52.

The surface of the rolling element for guide 56 is in point contact with the guide pole 58 so as to be rotatable, and guides the upper plate portion 50 in the vertical direction along the groove 52. The movement in the direction is restricted by the groove 52, whereby the upper plate portion 50 is prevented from rotating with respect to the guide pole 58.

A plurality of rolling elements 60 are arranged between the upper plate part 50 and the upper plate part 8 d on the main body side of the floating island structure 8, and the floating islands 60 are guided with respect to the upper plate part 50 by the guidance of these rolling elements 60. The main body side of the structure 8 is configured to be rotatable. The evacuation upper plate portion 50 is provided with a safety fence 46, a disaster prevention tool case, and the like.

A tubular portion 8 a is formed at the center of the floating island structure 8, and the tubular portion 8 a is fitted to the outer peripheral surface of the guide pole 58 via the rolling elements 14 so as to be movable up and down and rotatable. Other configurations are the same as those of the first embodiment shown in FIG. In this embodiment, no inner guide pole is provided inside the guide pole 58, but a multi-stage guide pole may be used as in the first embodiment.

  In the above-described configuration, even when the floating island structure 8 rotates when a tsunami comes, the evacuation upper plate portion 50 is configured to prevent rotation between the groove 52 of the guide pole 58 and the guide rolling element 56 fitted thereto. Therefore, it does not rotate. Further, when the floating island structure 8 separates from the guide pole 58 and drifts on the sea, the upper plate portion 50 for evacuation has an upper plate portion so that the evacuation upper plate portion 50 does not come off from the main body side of the floating island structure 8. An engaging portion 50a that engages with 8d is provided.

In the embodiment shown in FIG. 7, the upper plate portion of the floating island structure 8 has a double structure, but the upper plate portion 8d may have a single structure independent from the main body of the floating island structure 8 as shown in FIG. . In FIG. 8, the upper plate portion 8 d is placed on the upper end edge of the cylindrical portion 8 c of the floating island structure 8.

A guide rolling element 64 is vertically attached to a tubular portion 62 fixed in the center of the upper plate portion 8d. The guide rolling element 64 is a rotation stop formed along the longitudinal direction of the guide pole 58. The peripheral surface of the guide rolling element 64 is rotatably in contact with the bottom surface of the groove 52. A tubular portion 62 fixed to the center of the upper plate portion 8d is attached to the guide pole 58 via a guide rolling element 64 so as to be able to move up and down. The moving body 64 constitutes a rotation prevention mechanism that prevents the upper plate portion 8d from rotating with respect to the guide pole 58.

Further, when the floating island structure 8 is separated from the guide pole 58 and drifts on the sea, the floating upper plate portion 8d has a floating island structure so that the upper plate portion 8d for evacuation does not come off from the main body side of the floating island structure 8. An engaging portion (not shown) that engages with the peripheral wall portion 8c, which is the body portion of 8, is provided.
Other configurations are the same as those of the second embodiment shown in FIG.

In the above-described embodiment, the inside of the floating island structure 8 is configured as a cavity, and buoyancy is generated in the floating island structure 8 by this cavity, but in order to further increase the buoyancy inside the main body of the floating island structure 8, Floating material (foaming material, etc.) used for the use of marine space by floating piers developed by the Ministry of Land, Infrastructure, Transport and Tourism and other super large floating bodies may be filled.

FIG. 9 shows an embodiment in which the floating island structure 8 ′ has a two-layer structure, the upper chamber 8e as the upper layer is filled with the floating body material 66, and the lower chamber 8f in the lower layer is used as the seawater injection portion. . A plurality of holes (not shown) are formed in the bottom of the lower chamber 8f, and seawater enters into the inside through these holes. By filling the upper chamber 8e with the floating body material 66, a large tsunami strikes, various floating objects collide, and even if a hole is formed in the main body of the floating island structure 8, the floating island structure 8 'will not sink. It becomes a structure.

Further, when the floating island structure 8 ′ is detached from the guide pole 58 and floats alone on the sea, the lower chamber 8f is filled with seawater, so that the floating island structure 8 ′ rolls over due to the weight of the seawater. Can be prevented, and can be floated stably. In addition, when a lid is provided in the hole formed at the bottom of the lower chamber 8f of the floating island structure 8 ′, and the floating island structure 8 ′ escapes from the guide pole 58, the lid automatically opens, and seawater enters the lower chamber 8e. It can also be configured to enter. The other configuration of the embodiment shown in FIG. 9 is the same as that of the embodiment shown in FIG.

In the above embodiment shown in FIG. 9, the upper plate portion of the floating island structure 8 ′ has a double structure. However, as shown in FIG. 10, the upper plate portion 8d is independent of the main body of the floating island structure 8 ′. A single structure may be used. In FIG. 10, the upper plate portion 8d is placed on the upper edge of the peripheral wall portion 8c 'of the floating island structure 8'. In FIG. 10, the floating island structure 8 ′ has an upper and lower two-layer structure, and the upper chamber 8e as the upper layer is filled with the floating body material 66, and the lower chamber 8f as the lower layer is used as the seawater injection portion. Show.

A plurality of holes are formed in the bottom of the lower chamber 8f, and seawater enters from the holes. By filling the upper chamber 8e with the floating material 66, a large tsunami strikes, various floating objects collide, and even if a hole is formed in the main body of the floating island structure 8 ', the floating island structure 8' will sink. There is no structure. The other structure of the embodiment shown in FIG. 10 is the same as that of the embodiment shown in FIG. 8, and the same structural parts are denoted by the same reference numerals and indicate the corresponding relationship.

Next, another embodiment of the present invention will be described with reference to FIGS.
FIG. 11 shows an external view of the tower-type evacuation device. The column block 70 that holds the guide pole 68 vertically is firmly fixed at the bottom thereof in the ground, and the support portion 70a protrudes from the ground in a vertical direction at a predetermined height. The support block 70 is made of a strong material such as concrete, and the height from the ground is appropriately set based on the height of a small tsunami of a standard size assumed. The height of the guide pole 68 is appropriately set based on the assumed large tsunami height or an unexpected height.

A floating island support surface for supporting the cylindrical floating island structure 72 at a predetermined height is formed at the upper end of the support block 70. The floating island structure 72 is mounted on the body portion 72a having a double structure, the upper plate portion 72b fixed to the body portion 72a and closing the upper opening of the body portion 72a, and the upper plate portion 72b. The evacuation upper plate portion 72c, the tubular portion 72d formed at the center portion of the trunk portion 72a, and the tubular portion 72e formed at the center portion of the evacuation upper plate portion 72c are provided.

A plurality of rolling elements 74 are disposed between the upper and lower upper plate portions 72c and 72b, and the body portion 72a side of the floating island structure 72 is located with respect to the upper plate portion 72c by the guidance of the rolling members 74. It has a rotatable structure. The tubular portion 72e of the upper plate portion 72c for evacuation is loosely fitted to a guide pole 68 that extends upward. On the upper and lower sides of the tubular portion 72e, guide rolling elements 78 are attached corresponding to a pair of grooves 76 formed along the longitudinal direction of the guide pole 68, and these guide rolling elements 78 are , And is fitted in the corresponding groove 76.

The surface of the guide rolling element 78 is in point contact with the peripheral surface of the guide pole 68 so as to freely rotate. The rolling element 78 guides the upper plate portion 72c in the vertical direction along the groove 76, and each guide rolling element 78c. The lateral movement of the both side surfaces of the moving body 78 is restricted by the groove 76, whereby the upper plate portion 72 c is prevented from rotating with respect to the guide pole 68. The evacuation upper plate 72c is provided with a safety fence 80, a disaster prevention tool case, and the like.

A tubular portion 72 d integrated with the body portion 72 a of the floating island structure 72 is fitted to the outer peripheral surface of the guide pole 68 via the rolling element 82 so as to be movable up and down and rotatable. Each surface of each rolling element 82 is in point contact with the outer peripheral surface of the guide pole 68. Each of the rolling elements 82 is held by a holding body (not shown) on the tubular portion 72d side so as to be rotatable about an axis perpendicular to the longitudinal direction of the guide pole 68.

A cap 84 is fitted on the upper end of the guide pole 68 so as to be detachable. Around the support block 70, a support body 84 made up of a plurality of support posts standing on the ground is provided, and a flat plate body 86 is supported on the support body 84. A hole is formed in the flat plate body 86, and the upper portion of the floating island structure 72 is loosely fitted in the hole. The upper surface of the flat plate 86 and the upper surface of the upper plate part 72c for evacuation are arranged on substantially the same plane.

The support body 84 is provided with a staircase 88 that connects the flat plate body 86 and the ground, and the residents can evacuate on the upper plate portion 72c by using the staircase 88. A safety fence 90 is attached around the flat plate 86.
In the present embodiment, based on the tsunami prediction announced by the government, the height of the upper surface of the floating island structure 72, that is, the height from the ground of the upper plate portion 72c for evacuation and the height of the lower surface of the floating island structure 72 are set. An assumed standard relatively small tsunami does not reach the bottom surface of the floating island structure 72.

  In the above-described configuration, when an expected standard scale tsunami arrives, the height of the tsunami is lower than the lower surface of the floating island structure 72, and the floating island structure 72 does not float from the support block 70. Retained. However, when a tsunami larger than the standard scale or unexpectedly high comes, the floating island structure 72 is placed on the guide pole 68 with the evacuated residents on the upper plate 72c due to the pressure of seawater. Ascending along the height of the tsunami.

At this time, the upper plate portion 72c rises without rotating along the guide pole 68, but the main body portion of the floating island structure 72 rotates around the guide pole 68 by the pressure of seawater. As a result, a large load is not applied to the sliding joint between the trunk body side of the floating island structure 72 and the guide pole 68, and the floating island structure 72 is smoothly guided by the guide pole 68. To rise. Furthermore, when an unexpected large tsunami that exceeds the height of the guide pole 68 strikes, the cap 84 is removed, and the floating island structure 72 is detached from the guide pole 68 and floats alone on the sea with the evacuated residents on it. .

As a result, human lives can be protected from unexpected tsunamis. The upper plate portion 72c for evacuation is engaged with the periphery of the upper plate portion 72c so as not to be detached from the body portion main body side of the floating island structure 72 during drifting. A portion 72f is formed. In the embodiment shown in FIG. 12, the upper plate portion of the floating island structure 72 has a double structure. However, as shown in FIG. 13, the upper plate portion 72 b ′ may have a single structure independent from the main body of the floating island structure 72. good.

In FIG. 13, the upper plate portion 72 b ′ is placed on the upper end edge of the trunk portion 72 a of the floating island structure 72. A guide rolling element 78 is vertically attached to a tubular part 72e fixed at the center of the upper plate part 72b ′, and the guide rolling element 78 is a rotation formed along the longitudinal direction of the guide pole 68. The circumferential surface of the guide rolling element 78 is in contact with the bottom surface of the groove 76 so as to be freely rotatable.

The tubular portion 72e is attached to the guide pole 68 through the guide rolling element 78 so as to be movable up and down, and the rotation stopping groove 76 and the guide rolling element 78 fitted thereto are arranged on the upper plate portion 72b with respect to the guide pole 68. It constitutes an anti-rotation mechanism that prevents' rotation. An engagement mechanism (not shown) is provided between the upper plate portion 72b 'and the upper end edge of the trunk portion 72a so that the upper plate portion 72b' is not detached from the trunk portion 72a when drifting at sea. . Other configurations are the same as those of the embodiment shown in FIG.

In the above embodiment, the inside of the trunk portion 72a of the floating island structure 72 is configured as a cavity, and buoyancy is generated in the floating island structure 72 by this cavity, but the buoyancy is further increased inside the trunk portion 72a. Therefore, you may make it fill with the floating body material (foaming agent material etc.) currently used by the floating pier etc. which are developing in the Ministry of Land, Infrastructure, Transport and Tourism.
FIG. 14 shows an embodiment in which the floating island structure 72 ′ has a two-layer structure, the upper chamber 94 is filled with a floating material 92, and the lower chamber 96 is a seawater storage unit.

A plurality of holes (not shown) are formed at the bottom of the lower chamber 6, and seawater enters the inside through these holes. By filling the upper chamber 94 with the floating body material 92, a large tsunami hits, various floating objects collide, and even if a hole is formed in the main body 72a of the floating island structure 72 ', the floating island structure 72' The structure will not sink. Further, when the floating island structure 72 ′ is detached from the guide pole 68 and floats on the sea alone, the lower chamber 96 is filled with seawater, so that the floating island structure 72 ′ is prevented from rollover due to its weight. Can float on the sea stably.

A lid is provided in the hole formed in the bottom of the lower chamber 96 of the floating island structure 72 ′, and when the floating island structure 72 ′ escapes from the guide pole 68, the lid automatically opens and seawater enters the lower layer. It can also be configured. Other structures are the same as those shown in FIG. In the above embodiment, the upper plate portion of the floating island structure 72 ′ has a double structure, but as shown in FIG. 15, the upper plate portion 72b ′ has a single structure independent from the main body of the floating island structure 72 ′. Also good. The single structure of the upper plate portion of FIG. 15 is the same as the single structure of the embodiment shown in FIG. 13, and the internal structure of the trunk portion 72a is the same as that of the embodiment shown in FIG.

In the present invention, the evacuation upper plate portion does not rotate with respect to the guide pole. However, the evacuation upper plate portion may rotate with respect to the guide pole in conjunction with the main body of the floating island structure. In the above embodiment, a roller is used as the guide rolling element. However, a spherical body may be used in addition to the roller, and it is not particularly limited to the roller.

2 Tsunami Evacuation Device 4 Water Storage Container 4a Bottom 6 Guide Pole 6a Outer Pole 6b Inner Pole 8 Floating Island Structure 8a Tubular Part 8b Bottom Wall Part 8c Peripheral Wall Part 8d Upper Wall Part 10 Hill 12 Rolling Element 14 Rolling Element 16 Stopper 18 Direction Rudder 20 Streamline block 22 Rolling element 24 Stopper 26 Stopper 28 Unexpected escape cap 30 Stopper mechanism 30a Stopper 32 Conduit 34 Seawater intake 36 Ladder 38 Water supply / drainage pipe 40 Pump 42 Reinforcement material 44 Disaster prevention article holder 46 Fence 48 Wave breaker member 50 Upper plate Part 52 groove 54 tubular part 56 guide rolling element 58 guide pole 60 rolling element 62 tubular part 64 guide rolling element 66 floating body material 68 guide pole 70 column block 72 floating island structure 72a trunk part 72b upper plate part 72c upper plate part 72d Tubular part 72e Tubular part 72f Engagement part 4 rolling bodies 76 a groove 78 rolling element 80 safety fence 82 rolling elements 84 support 86 plate members 88 Stairs 90 safety fence 92 Floating material 94 upper chamber 96 lower chamber

Claims (6)

A guide pole having a circular cross section and extending vertically upward with respect to the ground, a hollow body, and an upper plate part for evacuation for accommodating a large number of people at the upper part of the body A floating island structure formed through the space inside the body portion, the tubular portion being inserted into the guide pole, and a plurality of guides on the tubular portion side. A rolling element is provided rotatably, the curved surface of each guide rolling element is brought into point contact with the peripheral surface of the guide pole, and the body portion of the floating island structure is movable up and down and rotatable with respect to the guide pole. Tsunami evacuation device. It is fitted and placed in a hole dug in a hill near the sea, and is formed from a circular bottom wall and a cylindrical peripheral wall standing upright at the periphery of the bottom wall. A reservoir for storing water, and a pipe for guiding seawater to a seawater intake of the reservoir, and in a state where the lower part of the guide pole is buried deep in the ground, at the substantially center of the bottom wall of the reservoir The tsunami evacuation device according to claim 1, wherein the tsunami evacuation device is installed upright and the floating island structure is disposed in the water storage container.   The tsunami evacuation device according to claim 1, wherein the floating island structure is supported at a predetermined height from the ground. The tsunami evacuation device according to claim 1, wherein a streamlined block having a rudder and a tapered tip is provided at the bottom of the floating island structure.   The tsunami evacuation device according to claim 1, wherein a floating body material is filled and disposed in a body portion of the floating island structure.   The upper plate portion for evacuation is configured separately from the trunk portion of the floating island structure so as to be rotatable with respect to the trunk portion of the floating island structure, and the upper plate portion for evacuation is arranged via the rotation prevention mechanism. The tsunami evacuation device according to claim 1, wherein the tsunami evacuation device is attached to the guide pole so as to be movable up and down.

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