JP2007308956A - Building construction method using corrugated cardboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building construction method using corrugated cardboard, which exploits the characteristics of the corrugated cardboard excellent in light weight and heat insulation properties, and facilitates construction of a building by relying on manpower of disaster volunteers etc. <P>SOLUTION: The construction method 1 is provided for constructing the regular octagonal building formed of the corrugated cardboard, and essentially composed of: a floor portion construction step S1 of constructing a regular octagonal floor portion on a concrete foundation formed beforehand; a wall portion assembling step S2 of assembling a polygonally cylindrical wall portion generally conforming to a peripheral shape of the floor portion; a wall portion fixing step S3 fixed to the assembled wall portion to the foundation; a roof portion assembling step S4 of assembling a roof portion having the shape of an octahedral dome; and a roof portion fixing step S5 for fixing the assembled roof portion to the wall portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method of building a building using cardboard, and in particular, in an area where a natural disaster such as a typhoon or an earthquake occurs, an evacuated inhabitant can move in temporarily and live an evacuation life. The present invention relates to a method of building a building using cardboard used as a temporary housing.

  Traditionally, evacuation orders and advisories have been issued by local governments or local governments for areas where the risk of life has been increased due to various natural phenomena such as typhoons, earthquakes, volcanic eruptions, and heavy snowfall. May be emitted. In such cases, evacuated residents evacuate to public facilities such as gymnasiums and public halls in elementary and junior high schools that are relatively safe and can accommodate a large number of people at one time, and have a temporary group life (evacuation life) There is to send.

  Such group life is intended for people of all ages, from infants to the elderly in the region, and secures personal (or household) space by laying a basket or blanket on the floor of a gymnasium, etc. is doing. For this reason, the space for each household cannot be partitioned by a partition or the like, and is always exposed to the eyes of the surrounding people. For this reason, daily activities such as changing clothes must be conscious of other people's gaze, and it may be placed in a poor environment that is prone to mental stress that cannot be said to ensure personal privacy. It was. Moreover, the life rhythm of each evacuated 2 inhabitant, such as wake-up time and bedtime, was disjointed, and there were many cases where sufficient sleep time could not be taken because of people's movements and voices. As a result, mental stress such as anxiety of evacuation life and securing of privacy and physical fatigue such as lack of sleep accumulate, and evacuated residents sometimes have troubles due to trivial matters. For this reason, these group lives were completed in a short period immediately after the occurrence of a natural disaster, and it was necessary to ensure a long-term evacuation life such as privacy.

  Therefore, the construction of so-called “temporary houses” is being led by local governments in areas where natural disasters have occurred. Since this temporary house is supplied for each household, it is not exposed to the surrounding line of sight, and the mental stress concerning these can be reduced. Therefore, the life rhythm before evacuation can be protected, the occurrence of trouble between evacuated residents can be suppressed, and the health of the evacuated residents can be stabilized.

  Here, the temporary housing to be constructed has completed the process of material processing and temporary assembly in the factory etc. in advance, and in the construction site where it is actually installed, installation work on the foundation, gas, electricity, water and sewerage etc. A prefabricated house (prefab house) that mainly secures and installs a lifeline is generally used. This prefabricated house has an excellent merit that it is possible to remarkably shorten the construction period and to construct many temporary houses in a short period of time compared to conventional buildings.

  By the way, as for the building materials related to conventional buildings, wooden materials such as wooden buildings, or concrete materials and reinforcing steel materials (metal materials) used for concrete houses, etc., mainly ensure sufficient strength necessary for buildings. It was used for. On the other hand, as a building material related to new buildings, unlike the above materials, it performs processing to improve various properties such as outdoor durability and strength against loads applied from multiple directions on relatively lightweight cardboard (paper quality material). Development of technology related to corrugated cardboard buildings that are constructed using such processed corrugated cardboard is also underway.

  Here, corrugated cardboard is a material having light weight and excellent heat insulation (low thermal conductivity), and buildings that take advantage of these advantages have already been built. For example, by using the above characteristics, a plurality of cardboards are stacked and laminated, and bonded together to provide a corrugated cardboard building (see Patent Document 1), a corrugated cardboard flute used as an exterior and interior material of a building. Laminated corrugated cardboard, which is laminated so that the directions are crossed, surrounded by a joining frame that facilitates joining, and coated with resin, etc., to significantly improve the durability and strength of panel-like corrugated cardboard A laminated corrugated cardboard panel structure using a panel (see Patent Document 2) or a curved corrugated cardboard in which corrugated cardboard is laminated in a curved surface and the surface is coated with a polyester resin or the like is used in combination. Buildings (see Patent Document 3) are known.

Japanese Patent Laid-Open No. 11-62100 JP 2001-193159 A JP 2000-352147 A

  However, the temporary housing constructed by the above-mentioned local governments may cause the following problems. In other words, when trying to build these temporary houses (prefabricated houses), each local government does not have stock for temporary houses in preparation for these natural disasters, and it is necessary to ask a contractor who has contracted in advance. The procedure required for this was complicated. For this reason, it may take at least one month from the occurrence of a natural disaster to the start of construction. During such a period, it is the actual situation to impose a group life in a gymnasium on the evacuated residents. It was. Furthermore, as described above, in order to use most of the prefabricated houses as wooden materials or metal materials as the main building materials, the loading for transporting these building materials to the construction site, and the building materials after the transportation When loading and unloading, heavy machinery such as cranes may be required. In addition, the operation of the heavy machinery requires an operator with specialized skills, and there have been many problems to be solved before construction, such as arrangement of heavy machinery and operators, and further selection of construction sites. .

  In addition, due to the occurrence of natural disasters, the prefabricated houses that are built using emergency building materials are built, resulting in variations in each specification, construction methods differing for each building material, etc. Even actual construction site workers sometimes caused confusion. In addition, there were differences in terms of size and comfort, and problems such as feeling unfair among evacuated residents who moved in sometimes occurred.

  And, after the evacuation order etc. is canceled, it is common for evacuated residents to leave these temporary houses and return to their homes or seek new places for living and move to other places. is there. In other words, these temporary houses are for a temporary period from the time immediately after the disaster until the evacuated residents return to their daily lives. They are no longer necessary after the evacuation order is canceled and must be removed. It was.

  Therefore, a highly recyclable building material that can be easily constructed (by human power) by ordinary people such as disaster volunteers gathered in the disaster area and can be reused after use. There were many voices expecting the building used.

  On the other hand, although the above-mentioned building materials using cardboard made of paper material are excellent in terms of recyclability, in order to improve the properties such as strength, a plurality of panel-like cardboards are used. In most cases, laminated and bonded materials are used, and the weight is not significantly reduced compared to conventional wooden materials, etc., and most cases are difficult to build by human power. .

  Accordingly, in view of the above circumstances, the present invention provides a building construction method using a cardboard that can be easily constructed by human power such as a disaster volunteer while taking advantage of the characteristics of cardboard excellent in lightness and heat insulation. This is a problem.

  In order to solve the above problems, a building construction method using a corrugated cardboard according to the present invention is “corrugated cardboard for constructing a building in which a living space is constructed by a corrugated cardboard floor, a wall, and a roof. A method for building a building using a floor, a floor construction process for constructing the floor by laying a corrugated cardboard floor panel in accordance with a polygonal base, and a plurality of rectangular cardboard walls A wall assembly step for connecting the wall side edges of the panel and assembling the polygonal cylindrical wall portion that substantially matches the outer peripheral shape of the foundation portion and the floor portion, and the assembled wall portion to the floor A wall portion fixing step for fixing the wall portion to the base portion so that the wall panel is suspended from the base portion, and a plurality of substantially isosceles triangular cardboard made of cardboard Connect equilateral edges of roof panels to each other and center Connecting the roof part assembly step of assembling the multi-plane dome-shaped roof part protruding upward, the bottom edge of the assembled roof part and the upper edge of the wall part fixed to the foundation part, It is mainly comprised from what comprises the roof part fixing process fixed to the said roof part in a part.

  Here, the building constructed by the building construction method using the cardboard of the present invention (hereinafter simply referred to as “building method”) is constituted by a corrugated floor panel, a wall panel, and a roof panel. The appearance is a polygon (for example, a regular octagon). Therefore, the weight of one panel itself is comparatively light, does not require heavy machinery such as cranes, and is not accompanied by difficulties compared to ordinary building materials when transported to a construction site. .

  Therefore, according to the construction method of the present invention, the floor portion is constructed by laying the floor panel so as to match the base portion formed in a polygonal shape. Here, the foundation is formed by pouring concrete into a formwork. Further, the polygonal shape of the foundation portion and the floor portion constructed and constructed in accordance with the foundation portion is not particularly limited. However, the strength of the wall portion and the like to be described later and the living space to be formed are ensured as wide as possible and the work is performed. That which does not impair the property is preferable. For this reason, a configuration such as a regular hexagon or a regular octagon seems to be suitable. Further, the floor panel constituting the floor portion may be composed of a single floor panel processed into such a polygonal shape, or a triangle (for example, a right isosceles triangle) and a quadrangle (a square and a rectangular shape). (Combination) may be used.

  Further, the wall side edges of a plurality of rectangular cardboard wall panels are connected to each other to assemble a polygonal cylindrical wall portion. Here, the panel side length in the width direction of each wall panel substantially corresponds to the length of the outer periphery of the base portion and the floor portion. Then, by connecting the plurality of wall panels to each other and forming an annular shape, a polygonal cylindrical wall portion having a corner portion at the side edge of the wall panels is formed. The means for connecting the wall side edges of the wall part is not particularly limited, but it is possible to use known fixing means or connecting means such as screws, screws, adhesives, and fixing tape. It is. However, for example, in order for one household such as an evacuated inhabitant to live for several months, it is necessary to employ a fixing means having a certain degree of strength.

  The assembled wall portion is arranged in accordance with the outer peripheral shape of the floor portion, that is, each side of the wall portion (corresponding to the panel surface of the wall panel) and the outer side of the floor portion are aligned with each other. The lower end of the part and the base part are fixed. Here, for fixing to the foundation portion, for example, using a concrete nail, a concrete nail is placed on the lower end piece that is extended from the lower end of the wall portion (wall panel) and bent to the floor portion side, An example is one that penetrates the lower end piece and is fixed to the concrete nail below it. By performing this fixing at one or more locations on each wall panel of the wall portion, it is strongly fixed to the base portion of the wall portion. Thereby, even if it is a case where a strong load is applied to a wall part from the side, since a lower end piece is being fixed to a foundation part, a wall part does not move to a foundation part.

  Further, the equilateral edges of a plurality of roof panels having an isosceles triangle shape are connected to each other to assemble a multi-plane dome-shaped roof portion. Here, the connection between the roof panels can take substantially the same method as the connection between the wall panels described above. However, since the roof part is likely to receive rainwater from above, a fixing means or a connecting means with measures such as waterproofing may be employed. Then, by connecting the bottom edge of the assembled roof portion and the upper edge of the wall portion, the roof portion is placed on the wall portion, and the floor portion, the wall portion, and the roof portion are inhabited. A space is formed. Thereby, by adopting the construction method of the present invention, it is possible to construct a polygonal building using each of the constituent members made of cardboard. In particular, since the roof part is supported by the wall part around the living space, there is no need for a pillar structure that supports the vicinity of the center of the roof. As a result, it is possible to secure a wider living space than existing houses. Moreover, since it is formed in a polygonal shape approximating a circle, it has an excellent advantage that the strength against the load from above and from the side is high and the living space described above can be made as wide as possible. Furthermore, according to the construction method of the present invention, the construction method is mainly composed of the floor portion, the wall portion, and the roof portion. Therefore, the number of building members is small, and individual fixing and connection can be performed relatively easily. It becomes. Therefore, construction in a short period of time is possible, and it becomes possible to promptly secure the privacy of residents in areas affected by natural disasters and to lead a stable evacuation life.

  Furthermore, the construction method of the present invention includes, in addition to the above configuration, “a side end piece extending from the wall side edge of the wall panel, at least one of the wall assembly process and the roof assembly process. Alternatively, bend inward the equal edge pieces respectively extending from the equal edge of the roof panel, and the side edge surfaces of the side edge pieces of each other, or the equal edge edges of the equal edge pieces of each other. The wall portion or the roof portion may be assembled using a contact fixing means for bringing them into contact with each other and holding the contact state between the side end single surfaces or the equilateral edge single surfaces.

  Therefore, according to the construction method of the present invention, the connection between the wall panels or the connection between the roof panels is overlapped with each other by overlapping the side end pieces or equilateral edge pieces extending from each panel. The contact fixing means is used to achieve the state. That is, it is possible to create a strong connected state by bringing a part of each panel into surface contact and maintaining such a state. In addition, as the contact fixing means, for example, a bolt and a nut can be attached and fixed so as to sandwich each piece in contact with each other, or a plastic rib can be inserted to release the contact state. What can be prevented from being easily performed can be disclosed. Furthermore, a plurality of holes are formed in each abutting piece, and a fastening band of a thin string made of polypropylene used for tying up magazines or the like is used, and the fastening band is passed through each hole to form an annular shape. It can be fixed by tying up. The fastening band has a characteristic that it cannot be returned to the direction in which the diameter of the ring is increased again, although the diameter of the ring can be reduced by a plastic ring tied to the ring. . For this reason, there is almost no possibility that the fastening state by the fastening band after the attachment is released.

  Furthermore, the construction method of the present invention includes, in addition to the above configuration, “the roof portion fixing step is extended from the upper end piece extended from the upper end edge of the wall panel and the bottom end edge of the roof panel. A roof for bending the bottom end pieces inwardly, contacting the upper end single face of the upper end piece and the bottom end single face of the bottom end piece, and maintaining the contact state of the upper end single face and the bottom end single face "The roof part may be fixed to the wall part by using a part fixing means".

  Therefore, the construction method of the present invention is such that the upper end piece extending from the upper end edge of the wall panel of the wall portion and the respective surfaces of the bottom end piece extending from the bottom end edge of the roof panel are brought into contact with each other, and the roof portion By fixing by a fixing means, a wall part and a roof part are connected. Here, as the roof portion fixing means, it is possible to use a known technique such as a plastic rib or a fastening band shown in the above-described contact fixing means. Thereby, connection of a roof part and a wall part is performed. Thereby, a roof part will be supported above a wall part, when each bottom end edge is connected with a wall part. That is, since the roof panels adjacent to each other are connected to each other, even if the vicinity of the center of the roof panel falls downward according to its own weight, the movement is restricted by the roof panels at both ends. As a result, the multi-faced dome-like roof portion is maintained in a multi-faced dome-like shape with a slightly raised portion near the center by simply connecting the bottom edge to the wall portion. In particular, when the roof portion is formed of lightweight cardboard, the shape can be easily maintained.

  Furthermore, the construction method of the present invention includes, in addition to the above configuration, “double-sided tape is attached along the connecting edges of the connected wall side edges, the equilateral edges, and the upper edge and the bottom edge. A double-sided tape sticking step, and a tape double sticking step of overlapping and sticking a gum tape on the double-sided tape stuck along the connecting edge.

  Therefore, according to the construction method of the present invention, the double-sided tape and the gummed tape are laminated and pasted on each connection portion (connection edge) of the roof portion and the wall portion assembled by the contact fixing means or the roof portion fixing means described above. It is worn. As a result, gaps between the respective edges can be filled, water droplets or the like can be prevented from entering the interior living space, or wind can be prevented from blowing, and the connection state can be further reinforced. . Thereby, it becomes possible to improve the durability of the building itself.

  Furthermore, the construction method of the present invention uses the plurality of rope fastening portions partially embedded in the surroundings of the constructed building, in addition to the above configuration, and the roof of the roof portion. It may be provided with a sheet extending step of extending a waterproof sheet portion covering the surface.

  Therefore, according to the construction method of the present invention, the waterproof sheet portion is put on the roof portion, and the sheet portion is stretched by the rope while covering the roof portion. Thereby, since the roof part is not directly exposed to rainwater, the strength and durability of the building itself can be improved.

  As an effect of the present invention, it is possible to construct a building using polygonal corrugated cardboard by a simple construction method by connecting the panels made of corrugated cardboard to each other. Therefore, it is possible to construct a building in the area where a natural disaster or the like has occurred by the hands of people such as disaster volunteers who do not have specialized knowledge about architecture. Also, each of the cardboard panels used does not have a very heavy weight and can be easily carried by one or two people. Therefore, it is possible to build a building using cardboard with a small number of people (for example, about 4 to 8 people) and for a short period of time (for example, about 1 day). It is considered preferable to employ the construction method of the present invention in a disaster area where necessary.

  Hereinafter, a construction method 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. Here, FIG. 1 is a perspective view showing an external configuration of a building 2 constructed by the construction method 1 of the present embodiment, FIG. 2 is an exploded perspective view showing an external configuration of the building 2, and FIG. (A) It is explanatory drawing which shows an example of a structure of the wall panel 3b and (b) roof panel 4, FIG. 4 is a flowchart which shows an example of the flow of each process in the construction method 1. As shown in FIG.

  The construction method 1 of this embodiment is for constructing a regular octagonal building 2 using corrugated cardboard, and its main process is in accordance with the shape of a concrete base 5 provided in advance. Floor portion construction step S1 for constructing a regular octagonal corrugated cardboard floor portion 6, a wall portion assembly step S2 for assembling an octagonal tubular corrugated wall portion 7 that substantially matches the outer peripheral shape of the floor portion 6, and assembly A wall portion fixing step S3 for fixing the wall portion 7 to the base portion 5, a roof portion assembly step S4 for assembling an eight-sided dome-shaped corrugated cardboard roof portion 8, and the assembled roof portion 8 to the wall portion 7. It mainly comprises a roof portion fixing step S5 for fixing.

  Here, the building 2 constructed by the construction method 1 of the present embodiment will be mainly described with reference to FIGS. 1 to 3. The building 2 is a corrugated cardboard floor portion laid on the foundation portion 5. 6, a cardboard wall portion 7 suspended from the base portion 5 so as to surround the floor portion 6, and an upper edge 9 of the wall portion 7, and a cardboard wall portion 7 supported above the floor portion 6. A roof portion 8 and a roof sheet 11 stretched so as to cover the roof surface 10 of the roof portion 8 are provided, and a living space 17 surrounded by the floor portion 6, the wall portion 7, and the roof portion 8 is provided. The whole is formed so as to have a so-called “kamakura” shape.

  Here, the construction of each part of the building 2 will be described in detail. As shown in FIG. 2, the floor 6 is configured by combining a square floor panel 12a, a rectangular floor panel 12b, and a triangular floor panel 12c. ing. Further, the wall portion 7 is formed in an octagonal cylindrical shape when viewed from above by connecting the wall side edges 13 of the eight rectangular wall panels 3a, 3b, 3c to each other. The roof portion 8 is formed in an eight-sided dome shape in which the central portion protrudes upward and the roof surface 10 is inclined at a predetermined inclination angle by connecting the equilateral edges 14 of the eight isosceles triangular roof panels 4. Is formed.

  Next, the construction method 1 of the present embodiment for constructing the building 2 will be described while showing details of the configuration of each part of the building 2. Here, the construction method 1 of the present embodiment exemplifies a case where three to four workers can complete the construction of the building 2 in 6 hours of actual work. Further, it is assumed that a foundation 5 having a smooth surface is already provided in a place where the building 2 is constructed, in which concrete is poured in advance along a predetermined formwork. That is, since a certain amount of days is required for hardening of the concrete, the building of this embodiment is started from the stage where the foundation forming process (not shown) is performed as a preparation process for the place to be built. To do. Of course, it does not matter if the foundation forming step is added to the construction method of the present invention.

  First, corrugated cardboard floor panels 12a, 12b, and 12c having various shapes are combined on the upper surface of the concrete base portion 5 solidified into a regular octagon shape in accordance with the outer peripheral shape of the base portion 5. Laying and building the floor 6 (floor building step S1). More specifically, as shown in FIG. 2, the floor portion 6 has a square shape, and is arranged in a central portion of the floor portion 6, so that four square floor panels constituting the square block 15 are arranged. The rectangular block 16 is a rectangular block 16 having a rectangular shape and 4 or 2 pieces, and a total of 14 rectangular floor panels 12b arranged on each block side 15a of the square block 15 and a right isosceles triangular shape. And the two sides of the square block 15 having the block side 15a (corresponding to twice the length in the longitudinal direction of the rectangular floor panel 12b) sandwiched between the right side 17 and the right side 17 at a 90 degree angle. 4 triangular floor panels 12c having 18 (corresponding to twice the length of the rectangular floor panel 12b in the short direction), and these are combined to form a regular octagonal shape. Here, as shown in FIG. 2, the length of the square floor panel 12a is twice as long as the length of the rectangular floor panel 12b in the longitudinal direction, and the length of the right-angled opposite side 17 of the triangular floor panel 12c is any longer. Are equivalent and correspond to the lengths of the regular octagonal base portion 5 and the outer peripheral pieces of the floor portion.

  Further, on one side of the floor portion 6, a portion corresponding to two rectangular floor panels 12 b is omitted, and the base portion 5 is exposed as it is. That is, the entrance 20 when the shoes are taken up into the living space 19 of the building 2 is formed by a step between the foundation 5 and the floor 6. In addition, although the corrugated cardboard floor panel 12a and the like described above are exemplified by those having a general thickness of corrugated cardboard panels, they may be configured by laminating a plurality of corrugated cardboard panels, or The casing may be formed by a cardboard panel, that is, each floor panel 12a or the like may be formed in a prismatic shape. Thus, by providing a thickness (height) from the upper surface of the concrete base portion 5 to the upper surface of the panel such as the floor panel 12a, the surface temperature is prevented from directly propagating to the upper surface of the panel. It becomes possible to improve the property and heat retention.

  Thereafter, the wall portion 7 is assembled using a corrugated wall panel 3a or the like (wall portion assembly step S2). Here, as shown in FIG.1 and FIG.2, the building 2 to be constructed is comprised using wall panel 3a, 3b, 3c which has three types of different shapes. More specifically, a large opening 21 corresponding to the entrance and exit for entering and exiting the living space 19 of the building 2 is provided, which is relative to the entrance 20 formed by the floor 6 and the foundation 5 described above. A wall panel 3a (one piece) for entrance / exit, a wiring / pipe hole 22 for passing various wires and pipes such as electricity and gas necessary for living in the living space 19 and the living space 19 In order to confirm the exterior from the living space 19 with the wiring / piping / ventilating wall panel 3b (four pieces) provided with a ventilation hole 23 for performing ventilation for preparing the indoor environment of The window wall panel 3c (three pieces) for windows which opened for ventilation and the window part 26 by which the plastic window part 24 was attached to the panel outer surface 25 so that opening and closing was possible was comprised. FIG. 3A illustrates a wall panel 3b having ventilation holes 23 and the like.

  And the concrete method of the assembly of the wall part 7 is directed to the inside (corresponding to the center side of the floor part 6; the same applies hereinafter) with the wall side pieces 27 respectively extending from the wall side edges 13 of the wall panel 3a and the like. Are bent approximately 90 ° or more, and the side surfaces of the wall-side pieces 27 are overlapped with each other in surface contact with each other, and plastic ribs (not shown) are attached to the respective walls in order to maintain the surface contact state. It is performed by inserting and fixing the side piece 27 so as to penetrate. As a result, the wall-side pieces 27 are restricted from being separated from each other by the ribs, and the movement that the side-side surfaces are displaced (sliding) is also restricted. And the cylindrical wall part 7 is formed by performing the said operation | work with respect to the eight wall panels 3a etc., and connecting both ends of the wall panel 3a etc. which were connected to one direction. The In addition, since it is not being fixed to the base part 5 in this state, the angle between each wall panel 3a etc. can change freely.

  Here, as shown in FIG. 2, the wall portion 7 of the present embodiment has a wall panel 3b → wall panel 3c → wall panel 3b → wall panel 3c → wall panel 3b in a clockwise direction when the wall panel 3a is the front. → Wall panel 3c → Wall panel 3b The panels are arranged alternately. In addition, the wall side edges 13 of the adjacent wall panels 3a and the like are brought into close contact with each other without gaps, reinforcing the connection between the wall panels 3a and the like, and receiving light (sunlight) from the outside. Work to attach a double-sided tape (not shown) along the wall side edge 13 to prevent the living space 19 from being irradiated and to prevent intrusion of rainwater and humidity (double-sided tape application process), and further from above The work (tape double pasting process) of laminating and sticking gum tape (not shown) is performed together. That is, wall part assembly process S2 contains the structure of both the double-sided tape sticking process and tape double sticking process of this invention. The double-sided tape sticking step and the tape double sticking step may be performed collectively when the connection of the floor portion 6, the wall portion 7, and the roof portion 8 is completed.

  Next, the assembled wall portion 7 is fixed to the base portion 5 (wall portion fixing step S3). At this time, since the base portion 5 and the floor portion 6 constructed on the upper surface thereof are formed in a regular octagonal shape, the inner surface 28 of each wall panel 3a and the like is directed to the center along each outer peripheral shape. Set in a state, the lower end piece 7a extended from the lower end of the wall panel 3a or the like is bent inward by approximately 90 °, and fixed to the base portion 5 using a known fixing means such as a concrete nail (not shown). I do. At this time, by placing at least two concrete nails or the like on the lower end pieces 7a of the individual wall panels 3a and the like, the wall portion 7 is securely fixed to the base portion 5, and in this state, each wall panel 3a The angle between etc cannot be changed. In this case, since the wall portion 7 is configured in a regular octagonal cylindrical shape, the inner angle of the wall portion 7 is maintained at 135 °. Thereby, the wall portion 7 held at a predetermined angle by the two wall panels 3a, 3b, etc. has a strength sufficient to support a load from above (mainly the weight of the roof portion 8), and its lower end. Since it is fixed to the base part 5, it can fully resist the load applied from the side.

  Thereafter, the roof portion 8 is assembled using the eight roof panels 4 (roof portion assembly step S4). More specifically, the equilateral edge pieces 29 respectively extended from the equilateral edge 14 of each roof panel 4 are bent inward as in the case of the connection by the wall side pieces 27 such as the wall panel 3a described above, The equilateral edge surfaces of the edge piece 29 are overlapped with each other in surface contact with each other, and plastic ribs are inserted and fixed so as to penetrate the equilateral edge pieces 29 in order to maintain the surface contact state. Is done by that. Since details have already been described, description thereof is omitted here. Further, a double-sided tape sticking step and a tape double sticking step may be included in the roof assembling step S4 for reinforcement, light shielding, and waterproof / drip proof.

  Here, the length of the equilateral edge 14 of the roof panel 4 is designed to be longer than the distance from the center of the floor 6 to the wall side edge 13 such as the wall panel 3a of the wall 7 fixed to the foundation 5. . Therefore, when the roof portion 8 is assembled by the above-described method, the vicinity of the center of the roof portion 8 (corresponding to the vicinity of the front end of the roof panel 4) projects to one side with respect to the outer peripheral edge 30 of the roof portion 8, that is, It will be in the state which swelled to either one. Thereby, the roof part 8 is formed in the octahedral dome shape where the roof surface 10 from the vertex vicinity to the outer periphery 30 inclined. At this time, the length of the bottom edge 31 of each roof panel 4 substantially matches the length of the upper edge 9 of the wall panel 3a and the like. Moreover, the front-end | tip of the roof panel 4 exhibits the front-end | tip wharf structure in order to make construction | assembly of the roof part 8 easy and to provide a ventilation hole in a vertex.

  Thereafter, the assembled roof portion 8 is attached to the wall portion 7 fixed to the base portion 5 (roof portion attaching step S5). Here, as described above, the length of the bottom edge 31 of the roof panel 4 constituting the roof portion 8 and the length of the upper edge 9 of the wall panel 3a constituting the wall portion 7 are substantially the same. Furthermore, the shape of the outer peripheral edge 30 of the roof portion 8 and the shape of the upper peripheral edge 32 formed by the upper end edge 9 of the wall portion 3a coincide with each other. Therefore, the wall connecting piece 33 extending from the bottom edge 31 of the roof panel 4 and the roof connecting piece 34 extending from the upper edge 9 of the wall panel 3a, etc. In the same manner as in the case of the above, it is bent inward, and the wall connecting piece 33 and the roof connecting piece 34 are overlapped in a state of being in surface contact with each other, and further made of plastic to maintain the state of the surface contact. The ribs are inserted and fixed so as to penetrate through the wall connecting piece 33 and the roof connecting piece 34, respectively. Furthermore, you may include and implement a double-sided tape sticking process and a tape double sticking process in roof part attachment process S5 for reinforcement | strengthening, light-shielding, and waterproofing / drip-proofing. Thereby, the basic skeleton of the building 2 constructed by the construction method 1 of the present embodiment is completed.

  Further, a plastic window 24 is attached to the panel outer surface 25 in order to open and close the window 26 opened in the wall panel 3c, and further, the opening 21 is opened and closed in the panel outer surface 25 of the wall panel 3a for entrance and exit. The sheet-like door portion 35 is attached (window / door mounting step S6). Here, the window portion 24 is attached by forming a hole above the window portion 26 of the wall panel 3c, and connecting the hole portion and the hole portion similarly formed in the window portion 24 with a thin string made of polypropylene. This is done by tying with a fastening PP band (not shown). Furthermore, the door part 35 is attached to the panel outer surface 25 by a double-sided tape and a gummed tape (both not shown) used in the double-sided tape sticking step and the tape double sticking step, respectively.

  Then, the sheet | seat part 36 cut according to the shape of the said roof part 8 is covered on the roof surface 10 so that the whole roof surface 10 of the roof part 8 may be coat | covered, and the roof sheet | seat 11 is stretched (roof sheet attachment) Step S7: See FIG. When the process concerned is explained concretely, the roof part 10 is covered with a sheet portion 36 made of a waterproof material, and the other end of the rope 38 having one end attached to the sheet edge 37 is attached to the periphery of the building 2. The roof sheet 11 is stretched by fastening to a rope fastener 39 partially embedded in the ground. As a result, it becomes possible to prevent rainwater from directly hitting the roof surface 11, and the durability of the building 2 can be improved.

  Then, a heat insulating material (not shown) such as urethane is applied to the panel inner surface 28 of the wall panel 3a or the like with a double-sided tape or the like to enhance heat insulation (internal heat insulating material attaching step S8), or the wall 7 and the floor. In order to prevent moisture and the like from entering between the base 6 and the base 5, the vicinity of the lower end of the wall 7 is wrapped with a waterproof sheet 40 formed of substantially the same material as the roof sheet 11 described above (waterproof sheet winding). In addition, a flooring (not shown) manufactured by the needle punch manufacturing method is laid on the floor surface of the floor portion 6 in order to improve heat retention and living (flooring mounting step S10), and finishing work is performed. . Thereby, main components, such as the wall part 7, are formed with a corrugated cardboard, and the building 2 excellent in living property and heat retention can be easily constructed with a small number of workers and working time.

  In particular, since it can be constructed with the building 2 by a relatively simple method in which the wall-side pieces 27 and the like extending from the panels 3a and the like are overlapped and fixed to each other, it does not have specialized knowledge about architecture. Even an operator can work. For this reason, local governments provide the buildings 2 constructed according to the present invention for each household to evacuated residents who have a natural disaster and live evacuated in groups. Will be able to. In addition, because there are few restrictions on the place to build, it can be built in a short period of time compared to the construction of temporary housing of prefabricated buildings as before, and the period until the evacuated residents move from the gymnasium, etc., will be greatly shortened. Can do.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the construction method 1 of the present embodiment, the example shown in FIG. 4 is shown as an example of the flow of each process, but is not limited to this, and the order of each process is appropriately changed (for example, a wall For example, the floor portion 6 is constructed after fixing the portion 7 to the base portion 5), or the wall portion 7 and the roof portion 8 are assembled at the same time by employing a large number of workers. Of course, it does not matter even if work related to a plurality of processes is performed in parallel.

  Further, as the means for connecting the wall panels 3a and the like to each other, those using plastic ribs have been exemplified. However, the present invention is not limited to this, and other known fixing / connecting means can be used. Furthermore, although the example which builds the building 2 of external octagonal shape was shown, it is not limited to this, What has a polygonal cylindrical wall part and is mainly comprised by corrugated cardboard It doesn't matter.

It is a perspective view which shows the external appearance structure of the building constructed | assembled by the construction method. It is a disassembled perspective view which shows the external appearance structure of a building. It is explanatory drawing which shows an example of a structure of a (a) wall panel and a (b) roof panel. It is a flowchart which shows an example of the flow of each process in a construction method.

Explanation of symbols

1 building method (building method of building using cardboard)
2 Building 3a, 3b, 3c Wall panel 4 Roof panel 5 Foundation 6 Floor 7 Wall 7a Bottom piece 8 Roof 9 Upper edge 10 Roof surface 11 Roof sheet 12a Square floor panel 12b Rectangular floor panel 12c Triangular floor panel 13 Wall side edge 14 Equal edge 15 Square block 15a Block side 16 Rectangular block 17 Right angle opposite side 18 Narrow side 19 Living space 20 Entrance part 21 Opening part 22 Wiring / pipe hole 23 Ventilation hole 24 Window part 25 Panel outer surface 26 Window part 27 Wall side Piece 28 Panel inner surface 29 Equal edge piece 30 Outer edge 31 Bottom edge 32 Upper edge 33 Wall connection piece 34 Roof connection piece 35 Door part 36 Sheet part 37 Sheet edge 38 Rope 39 Rope fastener 40 Waterproof sheet S1 Floor construction Process S2 Wall assembly process S3 Wall fixing process S4 Roof assembly process S5 Roof Constant step S6 windows, doors mounting step S7 roofing sheet mounting step S8 internal insulation material mounting step S9 tarpaulin winding step S10 bed mat mounting step

Claims (5)

A method of building a building using cardboard for building a building in which a living space is constructed by a corrugated floor, wall, and roof,
Laying a corrugated cardboard floor panel in accordance with the polygonal base, and constructing the floor,
A wall part assembly step of connecting the wall side edges of a plurality of rectangular cardboard wall panels and assembling the wall part of the polygonal cylinder substantially matching the outer peripheral shape of the foundation part and the floor part;
A wall portion fixing step of arranging the assembled wall portion along the outer peripheral shape of the floor portion, and fixing the wall portion to the base portion so that the wall panel is suspended from the base portion;
A roof part assembling step of assembling the multi-sided dome-shaped roof part, in which a plurality of substantially isosceles triangle shaped corrugated roof panels are connected to each other, and the vicinity of the center projects upward.
A roof portion fixing step of connecting a bottom end edge of the assembled roof portion and an upper end edge of the wall portion fixed to the base portion, and fixing the roof portion to the wall portion. How to build a building using corrugated cardboard. At least one of the wall assembly process and the roof assembly process is as follows:
Side end pieces respectively extending from the wall side edge of the wall panel or equilateral edge pieces respectively extending from the equilateral edge of the roof panel are bent inward, and the sides of the side end pieces are mutually Utilizing a contact fixing means for bringing the end-side surfaces into contact with each other, or contacting each other between the equal-edge sides of the respective equal-edge pieces, and maintaining the contact state between the side end-piece surfaces or between the equal-edge sides. The method of building a building using cardboard according to claim 1, wherein the wall portion or the roof portion is assembled. The roof portion fixing step includes
The upper end piece extended from the upper end edge of the wall panel and the bottom end piece extended from the bottom end edge of the roof panel are respectively bent inward, and the upper end piece surface and the bottom end of the upper end piece are bent. The roof portion is fixed to the wall portion by using a roof portion fixing means for contacting the bottom end single surface of the piece and maintaining the contact state of the upper end single surface and the bottom end single surface. A construction method of a building using the cardboard according to claim 1. The double-sided tape sticking process which sticks a double-sided tape along the connection edge of the wall side edges connected, the equilateral edges, and the connection edge of the top edge and the bottom edge, and
4. The method according to claim 1, further comprising: a tape multi-pasting step of overlapping and sticking a gum tape on the double-sided tape attached along the connection edge. 5. A construction method for buildings using cardboard.   A sheet tension that stretches a waterproof sheet portion covering the roof surface of the roof portion by using a plurality of rope fastening portions partially embedded at a predetermined interval around the constructed building The construction method of the building using the cardboard according to any one of claims 1 to 4, further comprising an installation step.

Images