JP2016108904A - Indoor shelter and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor shelter capable of being inexpensively constructed in a specific room in a building in a short period of time and capable of securing an effective safety space, and a method of manufacturing the same.SOLUTION: A shelter (10) is constructed in a predetermined room (2) in a building (1). The shelter (10) is constructed from a reinforcement wall (11) and a reinforcement ceiling (12), which are made of a plurality of reinforcement boards (20) having a first carbon fiber sheet (22) stuck on structural plywood (21).SELECTED DRAWING: Figure 3

Description

  The present invention relates to an indoor shelter, and more particularly to a technique for forming a shelter in a specific room in an existing building.

  Recent new buildings have been built with sufficient earthquake resistance. However, some older buildings do not have sufficient earthquake resistance. In particular, it is known that buildings before the new earthquake resistance standards have low earthquake resistance.

  Buildings with low earthquake resistance may collapse due to external loads caused by disasters such as typhoons, tsunamis, tornadoes, and landslides, as well as earthquakes. However, in preparation for such a disaster, it takes a large amount of money and time to apply seismic reinforcement to the entire building.

  Therefore, the vertical bodies of metal were erected at the four inner corners of a specific room in an existing building, and the vertical bodies were connected by a horizontal body. A technique for reinforcing a specific room by attaching a plurality of horizontal bodies in a rectangular frame is disclosed (see Patent Document 1).

JP 2003-120045 A

  However, in the technique described in Patent Document 1, the vertical body, the horizontal body, and the horizontal body are made of metal in order to increase the earthquake resistance. Therefore, each structure is heavy, and materials are brought into and installed on the site. There was a problem that the effort of.

  Moreover, in patent document 1, the net | network body which supports a fine fallen object is stretched in the top part in a frame, However What can be prevented by such a net | network is restricted to a light fallen object. For example, in a two-story building, when the second floor part collapses, it is difficult to support all the fallen objects by simply providing a net on the first floor ceiling. On the other hand, if the strength of the mesh body at the top is increased, it is necessary to secure sufficient strength of the vertical body that supports the top, and if high-strength materials are used, the cost increases and the size of the vertical body increases. Increasing the size leads to a narrowing of the indoor space.

  The present invention has been made to solve such problems, and its purpose is to secure an effective safety space that can be implemented in a specific room in a building at a low cost in a short period of time. It is an object to provide an indoor shelter that can be manufactured and a method for manufacturing the indoor shelter.

  In order to achieve the above-described object, in the indoor shelter according to the present invention, a wall of a predetermined room in a building, a ceiling of the predetermined room, and a base material standing on the indoor side of the wall are provided. A carbon fiber sheet is affixed to a side wall of a base material that is bonded to a reinforcing wall having a carbon fiber sheet affixed to a side surface and an upper portion of the reinforcing wall and extends in the horizontal direction from the ceiling. And a reinforced ceiling.

  In the reinforcing wall and the reinforcing ceiling, the carbon fiber sheet may be attached to a room-side surface of each base material.

  Moreover, the carbon fiber sheet may be affixed across the said reinforcement wall and the said reinforcement ceiling in the indoor side at the junction part of the said reinforcement wall and the said reinforcement ceiling.

  The reinforcing wall may be formed by abutting a plurality of base materials, and a carbon fiber sheet may be laminated and pasted around the abutting portion.

  The reinforced ceiling may be formed by abutting a plurality of base materials, and a carbon fiber sheet may be laminated and pasted around the butted portion.

  The reinforcing wall may be tightly connected to the foundation of the building.

  And a reinforcing floor having a carbon fiber sheet attached to a side surface of a base material that is joined to a lower portion of the reinforcing wall and extends in a horizontal direction from the floor of the predetermined room. Also good.

  In the indoor shelter manufacturing method according to the present invention, a reinforcing wall in which a carbon fiber sheet is pasted on a side surface of a base material is erected on the indoor side of a wall of a predetermined room in a building, and the predetermined room It is characterized in that a reinforcing ceiling in which a carbon fiber sheet is attached to a side surface of a base material extending in the horizontal direction is provided on the indoor side from the ceiling of the base plate.

  According to the indoor shelter and the method of manufacturing the indoor shelter of the present invention using the above means, it can be easily installed in a specific room of an existing building, and is less expensive and effective in a short period of time than applying seismic reinforcement to the entire building. A safe space can be constructed.

It is the schematic plan view which showed the 1st floor part of the building which has the indoor shelter which concerns on one Embodiment of this invention. 1 is a schematic perspective view of an indoor shelter according to an embodiment of the present invention. It is a fragmentary sectional view of an indoor shelter. It is the side view which looked at the reinforcement wall from the room inner side. It is the top view which looked at the reinforced ceiling from the room inner side. It is an expanded sectional view of the joined part of a reinforcement wall and a reinforcement ceiling. It is explanatory drawing (a) which shows the system of the strength test of a reinforcement board, and the graph (b) which shows a strength test result.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, each figure has a different part from an actual dimension so that it may be easy to understand the invention.

  A building 1 having an indoor shelter according to the present embodiment is a wooden two-story house, and FIG. 1 shows a schematic configuration diagram of the first floor portion of the building 1. As shown in the figure, a first room 2, a second room 3, and a third room 4 are formed on the first floor of the building 1, and the shelter 10 is located in the first room 2. Is provided.

  As shown in the perspective view of FIG. 2, the shelter 10 is erected with reinforcing walls 11 formed in an L shape in plan view corresponding to the four corner walls 5 of the first chamber 2. A reinforcing ceiling 12 is provided on the reinforcing wall 11.

  The reinforcing wall 11 is composed of a plurality of reinforcing plates 20. Each reinforcing plate 20 is configured by affixing a first carbon fiber sheet 22 on one side which is the indoor side of a flat structural plywood 21 (base material).

  In the reinforcing wall 11 in which two wall plates are joined in an L shape in plan view, as shown in the cross-sectional view of FIG. 3 and the side view of FIG. 4, one wall plate has two reinforcing plates 20. The second carbon fiber sheet 23 is affixed to the seam at the seam.

  In detail, the 2nd carbon fiber sheet 23 is affixed on the 1st carbon fiber sheet 22 in the periphery of the butting | matching part of the upper and lower two reinforcement boards 20 (it is easy to understand in FIG. 3). The second carbon fiber sheet is shown apart). The second carbon fiber sheet 23 extends over a predetermined width in the vertical direction around the joint line of the butted portion. Moreover, the carbon fiber sheet in this embodiment uses what the fiber direction extended in one direction, and in the reinforcement wall 11, the 1st carbon fiber 22 is a horizontal direction, the 2nd carbon fiber sheet 23 is a vertical direction, Each has a fiber direction. That is, the 1st carbon fiber 22 and the 2nd carbon fiber sheet 23 have the relation where the fiber directions crossed.

  The reinforcing wall 11 has a lower portion extending under the floor of the first chamber 2 and is fastened to a foundation 6 that supports the wall 5 of the first chamber 2 by bolts 24a and nuts 24b. Specifically, in this embodiment, as shown in FIG. 4, four fastening holes 25 are formed in the horizontal direction at the lower portion of the reinforcing wall 11. On the other hand, the base 6 has an inverted T-shaped cross section composed of a bottom part in contact with the ground and a vertical part extending in the vertical direction. The vertical part has a through hole 6a corresponding to the fastening hole 25 in the lower part of the reinforcing wall 11. Is formed. Accordingly, the reinforcing wall 11 is fastened to the base 6 by inserting the bolts 24a into the respective fastening holes 25 and the through holes 6a of the base 6 and tightening them with the nuts 24b. The lower end of the reinforcing wall 11 has a predetermined distance from the bottom of the foundation 6.

  On the other hand, as shown in the cross-sectional view of FIG. 3 and the plan view of FIG. 5, the reinforced ceiling 12, like the reinforcing wall 11, has a first carbon on one side which is the indoor side of the structural plywood 21 (base material). It consists of a plurality of reinforcing plates 20 to which fiber sheets 22 are attached. In the reinforced ceiling 12, a reinforcing plate 20 is abutted in the horizontal direction, and a second carbon fiber sheet 23 is attached to the joint.

  Specifically, also in the reinforced ceiling 12, a second carbon fiber sheet 23 is affixed on the first carbon fiber sheet 22 around the butted portion between the reinforcing plates 20. The second carbon fiber sheet 23 extends over a range of a predetermined width centering on the seam line of the abutting portion, and the second carbon fiber sheets 23 overlap each other around a portion where the seam line intersects. Yes. And the 1st carbon fiber sheet 22 and the 2nd carbon fiber sheet 23 have the relation where the fiber directions crossed.

  The reinforced ceiling 12 is supported by the outer peripheral edge being installed at the upper end of the reinforcing wall 11. A second carbon fiber sheet 23 is also attached to the first carbon fiber sheet 22 so as to overlap with the periphery of the outer peripheral edge of the reinforcing ceiling 12 and the upper end of the reinforcing wall 11.

  Specifically, as shown in FIG. 6, a chamfer 27 is provided on the indoor side of the joint between the reinforcing wall 11 and the reinforcing ceiling 12. The chamfer 27 has a substantially triangular prism shape having three surfaces: a surface in contact with the reinforcing wall 11, a surface in contact with the reinforcing ceiling 12, and a surface on the indoor side, and the cross section of the indoor surface is recessed in an arc shape. It is out. And the 2nd carbon fiber sheet 23 is affixed over the reinforcement ceiling 12 via the chamfering material 27 from the reinforcement wall 11. FIG.

  Next, the manufacturing method of the shelter 10 of this embodiment is demonstrated.

  First, as for the reinforcement board 20 which comprises the reinforcement wall 11 and the reinforcement ceiling 12, the 1st carbon fiber sheet 22 is affixed on the structural plywood 21 using the adhesive agent. An example of this adhesive is a two-component mixed epoxy resin.

  As an example of the attaching procedure of the first carbon fiber sheet 22, an epoxy resin as a main agent is applied as a base to the surface of the structural plywood 21 before the first carbon fiber sheet 22 is attached. A carbon fiber sheet cut according to the size of the structural plywood is overlaid on the base. And if the hardening | curing agent (for example, modified | denatured aliphatic polyamine) is apply | coated from on the 1st carbon fiber sheet 22, and an epoxy resin will harden | cure, the reinforcement board 20 will be completed. In addition, it is good also as sticking the 1st carbon fiber sheet 22 more reliably by overlapping an epoxy resin after epoxy resin hardening.

  Then, the procedure which constructs the shelter 10 which consists of the reinforcement wall 11 and the reinforcement ceiling 12 in the 1st room 2 is demonstrated.

  First, the reinforcing plate 20 manufactured as described above is transferred into the first chamber 2. Then, the floor 9 at the lower part of the wall 5 at the four corners of the first chamber 2 is temporarily removed, the reinforcing wall 11 is arranged along each wall 5, and the bolts 24 a and the nuts are based on the lower part of the reinforcing wall 11. Tighten by 24b.

  After each reinforcing wall 11 is installed, the reinforcing ceiling 12 is placed on the upper end of the reinforcing wall 11 and connected to the support rod 26 extending from the beam 8 behind the ceiling 7.

  After the reinforcement walls 11 and the reinforcement ceiling 12 are installed, the second carbon fiber sheet 23 is attached to the joint portion of the reinforcement plate 20 and the joint portion of the reinforcement wall 11 and the reinforcement ceiling 12. Even when the second carbon fiber sheet 23 is attached, it is preferable that the second carbon fiber sheet 23 be bonded with a two-component mixed epoxy resin.

  As described above, the shelter 10 including the reinforcing wall 11 and the reinforcing ceiling 12 is constructed in the first room 2 of the building 1.

  Here, referring to FIG. 7, there are shown an explanatory diagram (a) showing a method of a strength test of a reinforcing plate and a graph (b) showing a strength test result. As test bodies for the strength test, 12mm and 9mm structural plywoods with no carbon fiber sheet attached (single unit), with one carbon fiber sheet attached, and with two attached did. As shown in FIG. 7 (a), the strength test supports both ends of a plate-shaped test specimen, applies a load in the thickness direction at the center, and measures the displacement and load of the specimen. is there.

  As shown in the test results of FIG. 7 (b), the reinforcing plate on which the carbon fiber sheet is bonded has clearly less displacement with respect to the load than the 12 mm and 9 mm structural plywood alone. It can be seen that the strength is nearly doubled. On the other hand, it can be seen that there is not much change in strength between the case of one carbon fiber sheet and the case of two carbon fiber sheets.

  As is clear from the test results, the reinforcing plate to which the carbon fiber sheet is attached can sufficiently secure the strength, and the reinforcing wall 11 and the reinforcing ceiling 12 constituted by such a reinforcing plate 20. Has sufficient durability against external forces. Therefore, the shelter 10 can maintain a safe space inside the shelter 10 even if the building 1 is damaged during a disaster or the like.

  Further, the reinforcing wall 11 and the reinforced ceiling 12 of the shelter 10 are composed of a reinforcing plate 20 in which a carbon fiber sheet 22 is bonded to a structural plywood 21, so that it is lighter than a shelter or seismic reinforcement using a metal material. Work is easy and shelter can be constructed even in a small room. Furthermore, since the reinforcing wall 11 has sufficient strength by itself, it is possible to support the reinforcing ceiling 12 without providing a separate column, thereby saving the number of parts and reducing the number of work steps. Since the reinforced ceiling 12 also has sufficient strength, a safe space in the shelter 10 can be maintained even if the second floor portion collapses.

  Further, since the thickness of the reinforcing wall 11 and the reinforcing ceiling 12 is substantially equal to one structural plywood, the room is not greatly reduced. As a result, the room provided with the shelter can be used for a normal life, and can be used as an evacuation space as it is during a disaster, so that it is not delayed.

  As described above, the shelter 10 according to the present embodiment can be easily constructed in a specific room (first room 2) of the existing building 1, and is cheaper and short-term in comparison with the seismic reinforcement of the entire building. An effective safety space can be constructed without significantly impairing the use and shape of the room.

  This is the end of the description of the embodiment of the present invention, but the aspect of the present invention is not limited to this embodiment.

  For example, in the above embodiment, the shelter 10 is constructed only in one room of the building 1, but the number of shelters is not limited to this, and shelters may be provided in two or more rooms in the building.

  Moreover, in the said embodiment, the carbon fiber sheets 22 and 23 are affixed only on the indoor side surface of each of the reinforcing wall 11 and the reinforcing ceiling 12. This is because when a load is applied from the outdoor side to the reinforcing wall, the carbon fiber sheet is attached to the side surface on the indoor side where the tensile load on the surface is larger than the side surface on the outdoor side. Although it is advantageous, for example, a carbon fiber sheet may be affixed only to the side surface on the indoor side, or a carbon fiber sheet may be affixed to both side surfaces on the indoor side and the outdoor side when further strength is required. .

  Moreover, in the said embodiment, although the reinforcement ceiling 12 is joined in the form installed in the upper end of the reinforcement wall 11, not only the upper end of a reinforcement wall but the reinforcement ceiling is joined anywhere on the reinforcement wall. Also good.

  Moreover, although the shelter 10 is comprised from the reinforcement wall 11 and the reinforcement ceiling 12 in the said embodiment, you may add a reinforcement floor, for example. In that case, the reinforcing floor is preferably configured by abutting a plurality of reinforcing plates in the horizontal direction, joined to the lower portion of the reinforcing wall, and provided on the indoor side from the floor of the predetermined room.

  Moreover, in the said embodiment, although the reinforcement wall 11 and the reinforcement ceiling 12 are comprised by the some reinforcement board 20, it does not necessarily need to be comprised by the some reinforcement board. For example, the reinforcing wall 11 and the reinforcing ceiling 12 may be configured by only a single reinforcing plate, that is, a single structural plywood bonded with a carbon fiber sheet.

  In the above embodiment, the foundation 6 to which the reinforcing wall 11 is tightly attached supports the wall 5 and has an inverted T-shaped cross section, but the structure of the foundation is not limited to this. The foundation may be a foundation of a building, and the shape may be a shape other than a reverse T-shaped cross section.

  Furthermore, in the enforcement procedure in the said embodiment, the reinforcement board manufactured previously is transferred and assembled in the room, but the enforcement procedure is not restricted to this. For example, after transferring the structural plywood into a room and assembling it into the shape of a shelter, a carbon fiber sheet may be attached to the structural plywood.

DESCRIPTION OF SYMBOLS 1 Building 2 1st room 5 Wall 6 Foundation 7 Ceiling 8 Beam 9 Floor 10 Shelter 11 Reinforcement wall 12 Reinforcement ceiling 20 Reinforcement plate 21 Structural plywood 22 1st carbon fiber sheet 23 2nd carbon fiber sheet 26 Support rod

Claims (8)

The walls of a given room in the building,
The ceiling of the predetermined room;
A reinforcing wall in which a carbon fiber sheet is affixed to a side surface of a base material erected on the indoor side of the wall; and
A reinforcing ceiling in which a carbon fiber sheet is bonded to the side surface of a base material that is joined to the upper portion of the reinforcing wall and extends in the horizontal direction from the ceiling and extending in the indoor direction,
An indoor shelter characterized by comprising:   2. The indoor shelter according to claim 1, wherein the reinforcing wall and the reinforcing ceiling have the carbon fiber sheet attached to an indoor side surface of each base material.   3. The indoor shelter according to claim 1, wherein a carbon fiber sheet is bonded to the joint portion between the reinforcing wall and the reinforcing ceiling across the reinforcing wall and the reinforcing ceiling on the indoor side. .   4. The reinforcing wall according to claim 1, wherein the reinforcing wall is formed by abutting a plurality of base materials, and a carbon fiber sheet is laminated and pasted around the abutting portion. 5. Indoor shelter.   The said reinforced ceiling is formed by a plurality of base materials being abutted, and a carbon fiber sheet is laminated and pasted around the abutting portion. Indoor shelter.   The indoor shelter according to any one of claims 1 to 5, wherein the reinforcing wall is tightly connected to a foundation of the building.   And a reinforcing floor having a carbon fiber sheet attached to a side surface of a base material which is joined to a lower portion of the reinforcing wall and extends in the horizontal direction from the floor of the predetermined room. The indoor shelter according to any one of claims 1 to 6, wherein On the indoor side of the wall of a predetermined room in the building, a reinforcing wall in which a carbon fiber sheet is pasted on the side surface of the base material is erected,
The room is characterized in that it is joined to the upper part of the reinforcing wall on the indoor side from the ceiling of the predetermined room, and is provided with a reinforcing ceiling in which a carbon fiber sheet is bonded to the side surface of the base material extending in the horizontal direction. Shelter manufacturing method.

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