JP2022012930A - Structure - Google Patents

Abstract

To provide a structure 1 where a building 40 is moved up and down while maintaining a horizontal state accompanied by a flood disaster due to overflow of a river and tsunami.SOLUTION: A structure 1 includes: a foundation slab 10 embedded in the ground; a floor slab 20 which is arranged vertically above the foundation slab 10, and supports the building; and a link mechanism 100 which is arranged in a space between the foundation slab 10 and the floor slab 20, and performs regulation so that the floor slab 20 is moved to only a vertical direction relative to the foundation slab 10 when the floor slab 20 is moved.SELECTED DRAWING: Figure 1

Description

The present invention relates to a structure that rationally raises an entire watertight building or the like in the event of a flood or other flood.

Due to the effects of recent climate change and global warming, flood damage caused by river floods and inland floods is increasing. The damage caused by flooding of a detached house differs depending on whether it is flooded under the floor or above the floor. It is possible to prevent flooding in the underfloor space and indoors.

In recent years, inundation damage predictions, so-called hazard maps, have been published by various organizations, and according to these, it is not uncommon for areas to have inundation depths of 3 m or more. Even if the building has a watertight structure, the depth of water that can prevent inundation into the building is at most 1.5 m from the ground surface, in consideration of the cost of using special building materials. In areas where the degree is limited and the inundation depth is predicted to be 3 m or more, it may not be possible to avoid inundation on the floor inside the building.

Therefore, various structures have been proposed in which the building itself is floated in flooded water to avoid flooding inside the building.

For example, Patent Document 1 (Practical New Design Registration No. 3178947) is a mooring floating flood rescue room that can be installed in the garden of a general household, and has an openable and closable emergency escape hatch on the ceiling. On the side wall of the rescue room, there are multiple viewing windows and a sealable door for entry and exit, and under the floor of the rescue room, there is a space that constitutes a buoyancy room whose bottom is made of iron plate, and the rescue room is wound on a reel. The tip of the wire rope was connected to the mooring pile in the rescue room through an opening that allowed the tip of the removed wire rope to be pulled out watertightly, and multiple rod anchors were connected to the outer wall of the rescue room. A mooring floating flood rescue room characterized by the provision of iron chains is described.

Further, in Patent Document 2 (Japanese Patent No. 6065276), the upper part of the foundation structure constructed on the ground is surrounded by a steel plate, the floor is closed with a steel plate in a plane grid pattern, and foamed polystyrene foam is fitted inside. A buoyancy chamber is placed, and a one-story house is constructed above the buoyancy chamber so that it is integrated with the buoyancy chamber. Inverted L-shape for receiving the upper steel receiving material of the lift device on the outer wall surface of the one-story house where both ends of the lower support steel material of the lift device are fixed in a shape and the four corners are rotatably fixed. An inverted L-shaped receiver on the outer wall surface is placed on the upper steel receiving material of the lift device, which has a parallel quadrilateral shape, and becomes integrated with the buoyancy chamber when a large tsunami rushes in. The one-story house constructed in this way is floated on the surface of the water while maintaining a nearly horizontal state, the open door for the outboard unit is opened to fix the door, and the open door for the outboard unit is installed sideways on the indoor side. A buoyant small room for tsunami with a lift device, which is characterized by lowering the outboard unit and operating it to run a one-story house by itself, is described.
Utility Model Registration No. 3178947 Gazette Japanese Patent No. 6065276

In the mooring floating type flood rescue room connected by an iron chain according to the prior art described in Patent Document 1, due to the weight balance at the time of ascending or landing, the room does not move up and down horizontally and the equipment in the room is scattered. There was a problem.

In the prior art described in Patent Document 2, a one-story house built integrally with a buoyancy chamber is lifted and lowered by a pair of lift devices in the shape of a parallelogram, so that the building rises to the surface of the water while maintaining a horizontal state. There is a possibility of doing. However, in practice, the weight distribution of the floor surface of the house is not even depending on the arrangement and layout of the equipment in the house, and even with the conventional technique described in Patent Document 2, when the house rises or the house is drained and the house is drained. When landing, that is, when the house goes up and down, there is a problem that the level cannot be maintained and the equipment in the house is scattered.

On the other hand, in the prior art described in Patent Document 2, since the one-story house is moved up and down by a pair of lift devices, if the one-story house can stay in the initial position without being washed away, the position where the one-story house was originally installed. There is a possibility of sitting in. However, in the conventional technique described in Patent Document 1, there is a problem that there is almost no probability of sitting in the place where the rescue room was originally installed after the water is drained by the flood or the tsunami.

Further, in either Patent Document 1 or Patent Document 2, the rescue room or the house rises directly above and is unlikely to land directly under the rescue room or the house. Therefore, the rescue room or the house is generally arranged around the rescue room or the house. There is a high possibility of collision with surrounding objects such as enclosures, trees, vehicles, etc., and there is a problem that the danger associated with horizontal movement cannot be avoided.

The present invention solves the above-mentioned problems, and the structure according to the present invention includes a foundation slab buried in the ground and a floor slab arranged vertically above the foundation slab to support the building. A link mechanism that is arranged in the space between the foundation slab and the floor slab and regulates the foundation slab so that the floor slab moves only in the vertical direction when the floor slab moves. , Is included.

Further, the structure according to the present invention includes a pair of foundation slab fixing metal fittings in which the link mechanism is fixed to the foundation slab.
A pair of first rod members rotatably arranged around a pair of first support shaft portions for each of the pair of foundation slab fixing brackets, and a pair of first rod members for each of the pair of first rod members. A pair of second rod members rotatably arranged around the two support shaft portions, and a pair of second rod members rotatably arranged around the pair of third support shaft portions for each of the pair of second rod members. It is characterized by comprising a pair of floor slab side fixing metal fittings fixed to the floor slab and a horizontal rod member arranged between the pair of second support shaft portions.

Further, the structure according to the present invention is characterized in that two or more of the link mechanisms whose longitudinal directions are orthogonal to each other are arranged.

Further, the structure according to the present invention is characterized by having a skirt member that covers the outer periphery of the space between the foundation slab and the floor slab.

Further, the structure according to the present invention is characterized in that the skirt member has a bellows structure.

Further, the structure according to the present invention is characterized in that the skirt member is embedded in the ground.

Further, in the structure according to the present invention, the floor slab has a horizontal portion and a wall portion extending downward from the horizontal portion, and the horizontal portion and the wall portion form an air pool portion. It is characterized by that.

Further, the structure according to the present invention is characterized by having a pipe penetrating the floor slab, and the pipe has flexibility.

Further, the structure according to the present invention is characterized in that the pipe is any one of a water supply pipe, a sewerage pipe, and an electric wiring pipe.

Further, the structure according to the present invention is characterized in that a member for restricting the operation of the link mechanism is provided.

The structure according to the present invention is provided with a link mechanism that regulates the movement of the floor slab supporting the building so that the floor slab moves only in the vertical direction with respect to the foundation slab. According to the structure according to the invention, since the building moves up and down while maintaining the level, the equipment in the building will not be scattered due to the flooding of the river or the flood damage caused by the tsunami.

Further, according to the structure according to the present invention, the floor slab supporting the building can be returned (sit) to the position before the flood after the water is drained due to the flood.

Further, according to the structure according to the present invention, since the building moves only directly above and below in the event of a flood, it is extremely unlikely that the building will collide with surrounding objects such as trees and vehicles arranged around the building. ..

It is a figure which shows typically the structure 1 which concerns on 1st Embodiment of this invention. It is a figure which shows the link mechanism 100 used for the structure 1 which concerns on 1st Embodiment of this invention. FIG. 3 is an exploded perspective view of the vicinity of the first support shaft portion 151 in the link mechanism 100. It is an exploded perspective view of the vicinity of the 2nd support shaft portion 152 in the link mechanism 100. It is a figure which shows the state when the flood damage occurs around the structure 1 which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the sewer pipe 80 provided between the foundation slab 10 and the floor slab 20. It is a figure which shows the expansion and contraction of a sewer pipe 80. It is a figure which shows typically the structure 1 which concerns on 2nd Embodiment of this invention. It is a figure which shows the state when the flood damage occurs around the structure 1 which concerns on the 2nd Embodiment of this invention. It is a figure which shows the link mechanism 100 used for the structure 1 which concerns on 3rd Embodiment of this invention. It is a figure which shows a part of the structure 1 which concerns on 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram schematically showing a structure 1 according to a first embodiment of the present invention. In FIG. 1, the building 40 included in the structure 1 exemplifies a one-story house having a rectangular shape in a plan view, but the building 40 in the structure 1 according to the present invention is not limited thereto. Further, in the structure 1 according to the present invention, the link mechanism 100 is used when the building 40 is levitated. However, since the building 40 is a rectangular shape in a plan view, four link mechanisms 100 are provided along each side of the rectangle. It has been used and three of them are illustrated in FIG.

In the structure 1 according to the present invention, it is assumed that the building 40 has a watertight structure, and a watertight structure is ideal. The building 40 does not necessarily have to be a watertight structure.

The foundation slab 10 is a concrete floor slab buried in the ground G. In FIG. 1, the foundation slab 10 is a rectangular plate having only a horizontal portion 12, but the foundation slab 10 is not limited to the one shown in the figure. The foundation slab 10 may have another shape, a reinforcing bar or the like may be embedded, or a pile or the like may be provided. The foundation slab 10 also constitutes a part of the structure 1. The structure 1 includes a structure arranged above the foundation slab 10, including the foundation slab 10.

The floor slab 20 is independent of the foundation slab 10, is arranged vertically above the foundation slab 10, and directly supports the building 40. In the present embodiment, the floor slab 20 has a horizontal portion 22 having a rectangular plate shape in a plan view and a wall portion 24 extending downward from the peripheral edge of the horizontal portion 22. The floor slab 20 may have other shapes, but in the present embodiment, it is essential to have a wall portion 24 extending downward from the horizontal portion 22. This is because the space surrounded by the horizontal portion 22 and the wall portion 24 functions as an air pool portion 25 that gains buoyancy when the building 40 on the floor slab 20 is levitated when a flood occurs.

It is arbitrary from which position of the horizontal portion 22 the wall portion 24 extends downward, but it is possible to form a sufficient volume as the air pool portion 25 in order to secure a predetermined buoyancy. It is essential. Further, it is preferable to perform processing such that the inner surfaces of the horizontal portion 22 and the wall portion 24 of the floor slab 20 in contact with the space of the air pool portion 25 are airtight and waterproof.

Generally, concrete itself is airtight and watertight if there are no cracks, but it is almost impossible to construct it so that fine cracks do not occur at all, and unless surface treatment is applied to make it airtight and waterproof, Air passes through the cracks, and in a time of several hours, the air in the space of the air pool 25 is released.

As a processing method for achieving the above-mentioned airtightness, a method of applying a resin or the like (coating waterproofing) or a method of attaching a sheet (sheet waterproofing) can be used. In this way, by securing a sufficient volume of space in the air pool portion 25 and imparting airtightness to the inner surfaces of the horizontal portion 22 and the wall portion 24, the floor slab 20 of the building 40 when ascending is provided. The inundation depth can be reduced.

In the embodiment according to FIG. 1, the buoyancy with respect to the floor slab 20 is secured by forming the air pool portion 25, but in the structure 1 according to the present invention, instead of this, the air pool portion 25 is provided. Buoyancy may be ensured by filling the space with a foam styrene, hard urethane, or the like whose specific gravity is negligibly smaller than that of water. When buoyancy is secured by using a material such as styrofoam or hard urethane, it is not necessary to process the inner surfaces of the horizontal portion 22 and the wall portion 24 to provide airtightness. The material such as styrofoam and rigid urethane can also serve as a formwork for constructing the concrete floor slab 20.

Materials such as styrofoam and rigid urethane have a certain degree of water absorption, but the amount of water absorption during the flooding time due to flooding of the river assumed in the structure 1 according to the present invention is not so large. It is considered to be. Therefore, the buoyancy of the volume corresponding to the air pool portion 25 can be secured.

If water seeps between the concrete constituting the floor slab 20 and the material such as foamed styrol, water pressure acts on the concrete, and if there are cracks, water may pass through the cracks. Conceivable. However, the approximate amount of water flow calculated from the width of the crack x the length of the crack and the thickness of the concrete cannot pass through as much as air. Further, it is considered that there is no problem because the water due to the flooding of the river assumed in the structure 1 according to the present invention is not fresh water but muddy water and immediately causes clogging.

If resin is applied to the surface of a material such as styrofoam and concrete is poured to form the floor slab 20 in a state where the resin is uncured, the concrete and styrofoam will adhere firmly and firmly, and water will flow to the boundary surface. It is one of the preferred embodiments that the floor slab 20 is configured in this way because it does not penetrate.

A link mechanism 100 is provided in the space between the foundation slab 10 and the floor slab 20 configured as described above. When flood damage occurs around the structure 1 and the structure 1 is flooded, buoyancy is generated by the air in the air pool 25, and the floor slab 20 floats together with the building 40. At this time, the link mechanism 100 has a structure that regulates the foundation slab 10 so that the floor slab 20 moves only in the vertical and vertical directions.

The link mechanism 100 may have any structure as long as it regulates the foundation slab 10 so that the floor slab 20 moves only in the vertical direction. In the structure 1 according to the present embodiment, the link mechanism 100 as shown in FIG. 2 is used.

FIG. 2 is a diagram showing a link mechanism 100 used in the structure 1 according to the first embodiment of the present invention. Further, FIG. 3 is an exploded perspective view of the vicinity of the first support shaft portion 151 of the link mechanism 100, and FIG. 4 is an exploded perspective view of the vicinity of the second support shaft portion 152 of the link mechanism 100. Further, FIG. 5 is a diagram showing a state when flood damage occurs around the structure 1 according to the first embodiment of the present invention. When the link mechanism 100 is in the state shown in FIG. 2, it may be referred to as a contracted state of the link mechanism 100. Further, when the link mechanism 100 is in the state shown in FIG. 5, it may be referred to as the extended state of the link mechanism 100.

In the present embodiment, since the building 40 is a rectangular shape in a plan view, four link mechanisms 100 are used along the four sides of the rectangle. In order to realize the structure 1 according to the present invention, one link mechanism 100 may theoretically exist. However, if only one link mechanism 100 is provided, the force applied to the link mechanism 100 may become excessive. Therefore, it is preferable to provide two or more link mechanisms 100. Even more preferably, for example, when the building 40 is a rectangular shape in a plan view, four link mechanisms 100 are used along the four sides of the rectangle.

Here, the longitudinal direction of the link mechanism 100 is defined. The floor slab 20 moves only in the vertical and vertical directions, which is regulated by the link mechanism 100. However, it is an important part in constructing the link mechanism 100 having a structure that moves the floor slab 20 only in the vertical and vertical directions. The longitudinal direction of the link mechanism 100 is defined with reference to the horizontal rod member 140. That is, the direction in which the horizontal rod member 140 extends is defined as the longitudinal direction of the link mechanism 100 (or the horizontal rod member 140).

When two link mechanisms 100 are provided between the foundation slab 10 and the floor slab 20, the two link mechanisms 100 can be arranged so as to be parallel to each other in the longitudinal direction. Further, when two link mechanisms 100 are provided, they can be arranged so that the longitudinal directions of the two link mechanisms 100 are orthogonal to each other. At this time, in a plan view, the longitudinal directions of the two link mechanisms 100 can be arranged in a T-shape.

Further, when three link mechanisms 100 are provided between the foundation slab 10 and the floor slab 20, the longitudinal directions of the three link mechanisms 100 are arranged in an H shape in a plan view. be able to. Further, as shown in FIG. 1, when four link mechanisms 100 are provided between the foundation slab 10 and the floor slab 20, the four link mechanisms 100 are arranged in the longitudinal direction in a plan view. Can be made to be.

The material used for each part constituting the link mechanism 100 may be any material as long as it is made of a rigid metal, and for example, each part can be configured using a steel material as a material. For each rod member (110, 110', 120, 120'), the horizontal rod member 140, and the like, for example, a ready-made flat steel that has been processed can be used. Further, if a shaped steel such as channel steel is used for each rod member (110, 110', 120, 120') or the horizontal rod member 140, stronger bending rigidity and strength can be obtained.

A pair of foundation slab fixing brackets 103 and 103'are fixed to the foundation slab 10, and a pair of floor slab side fixing brackets 130 and 130' are fixed to the floor slab 20. Such fixing can be performed by burying a part of the fixing metal fittings (not shown) in the concrete constituting the foundation slab 10 and the floor slab 20. Further, as the fixing metal fittings, those of the same standard can be used.

For each of the pair of foundation slab fixing brackets 103 and 103', a pair of first rod members 110 and 110' are rotatably arranged around the pair of first support shaft portions 151 and 151'. .. For each of the pair of first rod members 110 and 110', members having the same dimensions and specifications can be used.

Further, for each of the pair of floor slab side fixing brackets 130 and 130', a pair of second rod members 120 and 120' are rotatably arranged around the pair of third support shaft portions 153 and 153'. Has been done. For each of the pair of second rod members 120 and 120', members having the same dimensions and specifications can be used. The first rod member and the second rod member can all be of the same size and standard.

FIG. 3 shows an exploded perspective view of the vicinity of the first support shaft portion 151. The description of the vicinity of the third support shaft portion 153 will be omitted because the basic configuration is only upside down.

For example, the foundation slab fixing bracket 130 can be composed of a grounding portion 105 that is fixed to the foundation slab 10 and an upright portion 106 that extends upward from the grounding portion 105. The upright portion 106 is provided with a through hole 107.

A through hole 117 is also provided in the first rod member 110, and the threaded shaft portion of the bolt 162 is inserted into the through hole 107 of the foundation slab fixing bracket 130 and the through hole 117 of the first rod member 110. By screwing the nut 166 to the threaded shaft portion, the first support shaft portion 151 as shown by the alternate long and short dash line is configured.

The horizontal rod member 140 will be described with reference to FIG. The horizontal rod member 140 is rotatably arranged with respect to each of the first rod member 110 and the second rod member 120 with the second support shaft portion 152 as the center. FIG. 4 shows an exploded perspective view of the vicinity of the second support shaft portion 152. Since the configuration of one end side of the horizontal rod member 140 is the same as that of the other end side, only one end side is shown in FIG.

As shown in FIG. 4, the threaded shaft portion of the bolt 162 is inserted into the through hole 117 of the first rod member 110, the through hole 147 of the horizontal rod member 140, and the through hole 127 of the second rod member 120. By screwing the nut 166 to the threaded shaft portion, the second support shaft portion 152 as shown by the alternate long and short dash line is configured.

In the structure 1 according to the present invention configured as described above, in the case of flooding of a river or flood damage due to a tsunami, water W is generated around the structure 1 as shown in FIG. 5, and the structure 1 is flooded. Then, the floor slab 20 and the building 40 are levitated by the buoyancy of the air existing in the air pool portion 25 in the floor slab 20.

Here, in the link mechanism 100 according to the present embodiment, since the flat rod member 140 is provided between the pair of rod members, the link is linked when the floor slab 20 supporting the building 40 moves with the floating. The mechanism 100 regulates the foundation slab 10 so that the floor slab 20 moves only in the vertical direction. According to the structure 1 according to the present invention provided with such a link mechanism 100, since the building 40 moves up and down while maintaining the horizontal position, the equipment in the building 40 is scattered due to the flooding of the river and the flood damage caused by the tsunami. There is no such thing as messing up. In addition, there is no risk that indoor furniture or the like will tilt and fall while the floor slab 20 is floating.

Further, according to the structure 1 according to the present invention, after the water W due to the flood damage is drawn, the floor slab 20 supporting the building 40 moves directly downward to return to the position before the flood damage (seating). It becomes possible. Further, according to the structure 1 according to the present invention, since the building 40 moves only directly above and below in the event of a flood, there is a possibility of collision with peripheral objects such as trees and vehicles arranged around the building 40. Is extremely low.

According to the structure 1 according to the present invention, after the water W due to the flood damage is drawn, the floor slab 20 supporting the building 40 can move directly downward to return (seat) to the position before the flood damage. It will be possible. However, if the water W due to the flooding of the river enters the floating matter or the earth and sand under the floor slab 20 and stays there, it will be an obstacle to sitting.

In the structure 1 according to the present invention, in order to prevent the above-mentioned floating matter and earth and sand from entering under the floor slab 20, the outer periphery of the space between the foundation slab 10 and the floor slab 20 is formed. It has a slab member 50 to cover. The skirt member 50 is made of a cloth-like material that allows water to pass through but blocks floating substances and earth and sand. Further, the skirt member 50 preferably has a bellows structure. Further, in normal times when flood damage does not occur, it is aesthetically preferable to bury the skirt member 50 in the ground G as shown in FIG. 1.

If the water permeability of the cloth constituting the skirt member 50 is low, the water flow to the inside cannot catch up with the rise in the outside water level at the time of flood, and the cloth may be torn by the water pressure or fixed to the floor slab 20 or the foundation slab 10. It can be difficult. Further, it is not preferable that the skirt member 50 is clogged due to the low water permeability of the cloth.

The water level rise speed at the time of flood is about several m / h, and the difference in water level between the inside and outside of the skirt member 50 (the space between the foundation slab 10 and the floor slab 20 is defined as "inside") is suppressed to 2.0 m. Then, the water pressure received by the cloth constituting the skirt member 50 is 1.0 tf / m ² . For example, the tensile strength of the canvas is 1000 to 2000 N (100 to 200 kgf) per 3 cm in width, that is, 30 kN to 60 kN (3 to 6 tf) per 1 m in width according to the JIS standard (L3402: hemp canvas). The load received by the skirt member 50 due to the above water level difference is a horizontal force of 1.0 tf / m ² × 2.0 m / 2 = 1.0 tf / m on the upper and lower sides. Even if it is considered that the cloth constituting the skirt member 50 is caught and pulled diagonally, it can be borne by a general canvas.

On the other hand, if the water permeability of the skirt member 50 is high, the load due to the above water level difference becomes small, but fine particles of earth and sand of muddy water pass through and accumulate on the foundation slab 10 when the flood subsides. Since the removal work becomes a problem, it is preferable that the texture of the cloth is as fine as possible.

As a cloth that can be used for the skirt member 50 that satisfies the above-mentioned contradictory required performance, a water-permeable net made of polyethylene or an olefin-based flat yarn cloth is preferable in consideration of corrosion resistance because it is always buried in the ground. be.

When the inundation depth increases, the skirt member 50 has a water passage resistance, so that the outer water depth is higher than the inner water depth of the skirt member 50. It protrudes to the underfloor space side between the foundation slab 10 and the floor slab 20. On the other hand, when the inundation is settled and the water W is drawn, the water level in the underfloor space is higher than the outside, so that the cloth of the skirt member 50 is not sandwiched by the underfloor space. As described above, it is easy to select a cloth having an appropriate water flow resistance that is suitable for stretching and folding as the skirt member 50.

Further, if the skirt member 50 is buried under the ground surface, the appearance around the building 40 at all times is no different from that of a normal house, and the use of the garden, parking lot, or the like is not restricted.

By using the skirt member 50 in the structure 1 according to the present invention, turbid water containing fine particles and the like enters the space under the floor slab 20 due to flooding. Since no drifting material, which is a foreign substance of such a size, can enter, recovery is quick after the inundation damage has subsided.

In the structure 1 according to the present invention, it is assumed that the distance between the floor slab 20 in which the building 40 is supported and the foundation slab 10 changes between normal times and flood damage. .. Therefore, the pipes that are passed from the foundation slab 10 to the floor slab 20 and further penetrate the floor slab 20 side and are drawn into the building 40 need to correspond to the above-mentioned change in distance. It should be noted that such piping is not shown in FIG. 1 and the like.

Examples of pipes that penetrate the floor slab 20 side and are drawn into the building 40 include water supply pipes, sewerage pipes, and electrical wiring pipes. It is preferable that these pipes have at least flexibility in order to cope with the above-mentioned change in distance.

Flexible pipes can be used for water supply pipes and electrical wiring pipes used to draw in electric power, and the floor slab 20 has a sufficient length so that it cannot be torn off even when the floor slab 20 floats. You can deal with it by leaving it alone. To deal with this, the piping and wiring may be extended by several meters, and the pressure loss or voltage loss of the water supply due to the extension can be almost ignored, and the cost of the piping and wiring members increases. The problem of is almost negligible.

The above measures cannot be taken for large-diameter pipes such as sewer pipes. Therefore, it is preferable to use the sewerage pipe 80 described below. In the present invention, since the floor slab 20 rises directly above and descends directly below, the sewer pipe 80 is provided with an angle changing mechanism so that the pipe is not damaged as the floor slab 20 rises and sits. ..

FIG. 6 is a diagram showing an example of a sewerage pipe 80 provided between the foundation slab 10 and the floor slab 20. Further, FIG. 7 is a diagram showing expansion and contraction of the sewerage pipe 80, FIG. 7A shows a state in which the sewerage pipe 80 is contracted in normal times, and FIG. 7B is a floating state of the floor slab 20. Along with this, the sewer pipe 80 is shown in a stretched state.

A general vinyl chloride pipe can be used as a component constituting the sewer pipe 80. In the figure, the lower fixed pipe 81 is a pipe fixed to the foundation slab 10 side, and the upper fixed pipe 84 is a pipe fixed to the floor slab 20 side.

The lower fixed pipe 81 is connected to the lower U-shaped pipe 82 via the joint portion 86, and the upper fixed pipe 84 is connected to the upper U-shaped pipe 83 via the joint portion 86. Further, the lower U-shaped pipe 82 and the upper U-shaped pipe 83 are also connected via the joint portion 86. By connecting each of these pipes, an angle changing mechanism is provided to the sewer pipe 80.

Further, an O-ring (not shown) is arranged in the joint portion 86 to prevent sewage in the pipe from leaking to the outside of the pipe. As the joint portion 86, a general variable angle joint of a vinyl chloride pipe can be used. In addition, the angle universal joint of a general vinyl chloride pipe can change the angle by about ± 15 °.

By adopting the sewer pipe 80 provided with the dogleg-shaped angle change mechanism as shown above, the distance between the floor slab 20 and the foundation slab 10 can be changed between normal times and flood damage. However, the sewer pipe 80 is not damaged.

As described above, the structure 1 according to the present invention is a link that regulates the foundation slab 10 so that the floor slab 20 moves only in the vertical direction when the floor slab 20 supporting the building 40 moves. According to the structure 1 according to the present invention, which is provided with the mechanism 100, the building 40 moves up and down while maintaining the level, so that the equipment in the building 40 is scattered due to the flooding of the river and the flood damage caused by the tsunami. There is no such thing as doing.

Further, according to the structure 1 according to the present invention, the floor slab 20 supporting the building 40 can return (sit) to the position before the flood after the water is drained due to the flood.

Further, according to the structure 1 according to the present invention, since the building 40 moves only directly above and below in the event of a flood, there is a possibility of collision with peripheral objects such as trees and vehicles arranged around the building 40. Is extremely low.

Next, the structure 1 according to another embodiment of the present invention will be described. FIG. 8 is a diagram schematically showing the structure 1 according to the second embodiment of the present invention. Further, FIG. 9 is a diagram showing a state when flood damage occurs around the structure 1 according to the second embodiment of the present invention. Hereinafter, only the point that the structure 1 according to the second embodiment is different from the structure 1 according to the first embodiment will be described, and the description of the same configuration will be omitted.

Also in the structure 1 according to the second embodiment, the floor slab 20 has a horizontal portion 22 having a rectangular plate shape in a plan view and a wall portion 24 extending downward from the horizontal portion 22. The portion 24 is different from the structure 1 according to the first embodiment in that the portion 24 extends downward from a position other than the peripheral edge of the horizontal portion 22.

The space inside the horizontal portion 22 and the wall portion 24 in the floor slab 20 is used as the air pool portion 25 as in the previous embodiment. Also in the structure 1 according to the second embodiment, four link mechanisms 100 are provided between the foundation slab 10 and the floor slab 20, and the four link mechanisms 100 are used as the air pool portion 25. It is arranged in the space. However, the four link mechanisms 100 may be arranged in the space outside the wall portion 24 shown in 26.

Further, in the structure 1 according to the first embodiment, the foundation slab 10 is composed of only the horizontal portion 12, but in the structure 1 according to the second embodiment, the foundation slab 10 is viewed in a plan view. It has a rectangular plate-shaped horizontal portion 12 and a wall portion 14 extending upward from the four peripheral sides of the horizontal portion 12. The structure 1 according to the second embodiment has a structure in which the wall portion 14 on the foundation slab 10 side and the wall portion 24 on the floor slab 20 side extend so as to face each other.

When flooding a river or flooding due to a tsunami, as shown in FIG. 9, water W is generated around the structure 1 and the structure 1 is flooded. Building 40 emerges. In this case, since the skirt member 50 is present, it is basically prevented that earth and sand enter the foundation slab 10. The structure 1 according to the second embodiment has a structure in which the wall portion 14 on the foundation slab 10 side is in contact with the ground surface, and since this wall portion 14 serves as a barrier, sediment can enter the foundation slab 10. , Can be prevented more reliably.

Further, according to the structure 1 according to the second embodiment of the present invention as described above, the same effect as that of the structure 1 according to the first embodiment can be enjoyed.

Next, the structure 1 according to another embodiment of the present invention will be described. When the inundation depth becomes very deep and the floating amount of the floor slab 20 becomes large, in the link mechanism 100, the first rod member and the second rod member may be extended to the extent that they are in a straight line. In such a case, the parts constituting the link mechanism 100 may be stretched and damaged, and when the link mechanism 100 contracts, it may not operate smoothly.

In order to prevent damage to the link mechanism 100 as described above, it is also a preferable embodiment to appropriately adopt a member that regulates the operation of the link mechanism 100. The structure 1 according to the third embodiment described below is an example in which such an operation restricting member of the link mechanism 100 is provided in the link mechanism 100.

FIG. 10 is a diagram showing a link mechanism 100 used in the structure 1 according to the third embodiment of the present invention. FIG. 10A shows a state in which the link mechanism 100 is contracted in normal times. The difference from the conventional embodiments is that the pair of first rod members 141, which function as stoppers, regulate the movements of the pair of first rod members 110 and 110'below the horizontal rod member 140. A pair of second rod regulating members 142, 142 that function as stoppers to regulate the respective movements of the pair of second rod members 120, 120'at the point where 141'is provided and above the horizontal rod member 140. 'Is a point.

For example, in order to provide each regulation member (141, 141', 142, 142') for the horizontal rod member 140 machined from flat steel, it is the same as each rod member (110, 110', 120, 120'). This can be done by joining plates with a certain thickness by fillet welding.

FIG. 10B shows a state in which the link mechanism 100 is extended as the floor slab 20 rises. In the link mechanism 100, the pair of first rod members 110 and 110'are in contact with the pair of first rod regulating members 141 and 141', and the pair of second rod members 120 and 120'are paired. By abutting on the second rod regulating members 142 and 142', the extension operation of a predetermined amount or more is restricted.

In the structure 1 according to the third embodiment as described above, the horizontal rod member 140 is provided with a regulating member (141, 141', 142, 142') that regulates the operation of the link mechanism 100. According to the structure 1 according to the third embodiment, even if the inundation depth becomes very deep and the floating amount of the floor slab 20 increases, the elongation amount of the link mechanism 100 can be suppressed, and the link mechanism 100 itself can be suppressed. It prevents damage to the link mechanism 100 and operates smoothly even when the link mechanism 100 contracts.

Next, the structure 1 according to another embodiment of the present invention will be described. In the structure 1 according to the third embodiment, the link mechanism 100 itself is provided with a member that regulates the operation of the link mechanism 100. On the other hand, in the structure 1 according to the third embodiment, the member that regulates the operation of the link mechanism 100 is provided at a position outside the link mechanism 100. Hereinafter, such a fourth embodiment will be described.

FIG. 11 is a diagram showing a part of the structure 1 according to the fourth embodiment of the present invention. In the structure 1 according to the fourth embodiment, a structure in which the foundation slab 10 and the floor slab 20 are connected in advance by a plurality of wire members having the same length is adopted. This wire member is arranged in a slack state on the foundation slab 10 in normal times, but when the floor slab 20 rises during flood damage, the floor slab 20 is regulated by the wire member from the foundation slab 10. The link mechanism 100 is protected by the distance from the predetermined distance. Hereinafter, a specific configuration using the sling wire 180 as such a wire member will be described. However, the present invention is not limited to the examples described below.

FIG. 11A shows a state in normal time when the link mechanism 100 is contracted. Further, FIG. 11B shows a state in which the link mechanism 100 is extended as the floor slab 20 rises. At this time, tension is applied to the sling wire 180 between the floor slab 20 and the foundation slab 10, and the floor is floored. The slab 20 is set to be no more than a specified distance from the foundation slab 10. As a result, the link mechanism 100 can be spared from the damage.

In order to construct such a structure 1, the insert 170 is embedded in the foundation slab 10 and the floor slab 20. Next, an eyebolt 173 is screwed into the embedded insert 170 to fix it to the foundation slab 10 and the floor slab 20.

A shackle 176 is attached to each of the eyebolt 173 fixed to the foundation slab 10 and the eyebolt 173 fixed to the foundation slab 10 to the floor slab 20, and a sling wire 180 is attached between these shackles 176 to attach the sling wire 180 to the floor. The slab 20 and the foundation slab 10 are combined.

In the structure 1 according to the fourth embodiment, the allowable load of the insert 170, the shackle 176, and the sling wire 180 is determined according to the dimensions such as the thickness, and the inundation depth from the state where the link mechanism is fully extended. The number, thickness, and the like of the sling wires 180 may be appropriately selected according to the buoyancy calculated for the sling wire 180.

Further, as shown in FIG. 11B, the length of the sling wire 180 is selected according to the state immediately before the parallelogram formed by each rod member constituting the link mechanism 100 becomes a rectangle. do it.

Further, the insert 170 has various types, and the present invention is not limited to the one shown in FIG.

The construction procedure of the structure 1 according to the fourth embodiment is a normal construction procedure such as foundation slab construction (insert burial), floor slab construction (insert burial), building construction, and installation of wire members in the underfloor space. Can be constructed.

According to the above configuration, even if the inundation depth becomes very deep and the floating amount of the floor slab 20 increases, the elongation amount of the link mechanism 100 can be suppressed and the damage of the link mechanism 100 itself can be prevented. However, even when the link mechanism 100 contracts, it operates smoothly. As a configuration for suppressing the elongation amount of the link mechanism 100, a configuration according to the third embodiment and a configuration according to the fourth embodiment may be used in combination.

As described above, the structure 1 according to the present invention includes a link mechanism 100 that regulates the floor slab 20 so that the floor slab 20 moves only in the vertical direction with respect to the foundation slab 10 when the floor slab supporting the building 40 moves. According to the structure 1 according to the present invention, the building 40 moves up and down while maintaining the level, so that the equipment in the building 40 is scattered due to the flooding of the river and the flood damage caused by the tsunami. There is nothing.

Further, according to the structure 1 according to the present invention, the floor slab 20 supporting the building 40 can return (sit) to the position before the flood after the water is drained due to the flood.

Further, according to the structure 1 according to the present invention, since the building 40 moves only directly above and below in the event of a flood, there is a possibility of collision with peripheral objects such as trees and vehicles arranged around the building 40. Is extremely low.

1 ... Structure 10 ... Foundation slab 12 ... Horizontal part 14 ... Wall part 20 ... Floor slab 22 ... Horizontal part 24 ... Wall part 25 ... Air pool part 40・ ・ ・ Building 50 ・ ・ ・ Skirt member 80 ・ ・ ・ Sewer pipe 81 ・ ・ ・ Lower fixed pipe 82 ・ ・ ・ Lower U-shaped pipe 83 ・ ・ ・ Upper U-shaped pipe 84 ・ ・ ・ Upper fixed pipe 86 ... Joint part 100 ... Link mechanism 103, 103'... Foundation slab fixing bracket 105 ... Grounding part 106 ... Standing part 107 ... Through hole 110, 110'... First Rod member 117 ... Through hole 120, 120'... Second rod member 127 ... Through hole 130, 130' ... Floor slab side fixing bracket 140 ... Horizontal rod member 141, 141'... 1st horizontal regulating member 142, 142'... 2nd horizontal regulating member 147 ... through hole 151, 151'... 1st horizontal shaft portion 152, 152' ... 2nd horizontal shaft portion 153, 153'... 3rd support shaft 162 ... Bolt 166 ... Nut 170 ... Insert 173 ... Eyebolt 176 ... Shackle 180 ... Sling wire G ... Ground W ... water

Claims (10)

The foundation slab buried in the ground and
A floor slab that is placed vertically above the foundation slab and supports the building,
A link mechanism arranged in the space between the foundation slab and the floor slab and restricting the floor slab to move only in the vertical direction with respect to the foundation slab when the floor slab moves.
A structure characterized by containing. The link mechanism
A pair of foundation slab fixing brackets fixed to the foundation slab,
A pair of first rod members rotatably arranged around the pair of first support shafts for each of the pair of foundation slab fixing brackets.
A pair of second rod members rotatably arranged around a pair of second support shaft portions with respect to each of the pair of first rod members, and a pair of second rod members.
A pair of floor slab-side fixing brackets that are rotatably arranged around the pair of third support shafts for each of the pair of second rod members and fixed to the floor slab.
The structure according to claim 1, wherein the structure comprises a horizontal rod member arranged between the pair of second support shaft portions. The structure according to claim 1 or 2, wherein two or more of the link mechanisms whose longitudinal directions are orthogonal to each other are arranged. The structure according to any one of claims 1 to 3, wherein the structure has a skirt member that covers the outer periphery of the space between the foundation slab and the floor slab. The structure according to claim 4, wherein the skirt member has a bellows structure. The structure according to claim 4 or 5, wherein the skirt member is embedded in the ground. Claim 1 to claim 1, wherein the floor slab has a horizontal portion and a wall portion extending downward from the horizontal portion, and an air pool portion is formed by the horizontal portion and the wall portion. Item 6. The structure according to any one of items 6. The structure according to any one of claims 1 to 7, wherein the structure has a pipe penetrating the floor slab, and the pipe has flexibility. The structure according to claim 8, wherein the pipe is any one of a water supply pipe, a sewer pipe, and an electrical wiring pipe. The structure according to any one of claims 1 to 9, wherein a member for restricting the operation of the link mechanism is provided.

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