Construction method of structure

Abstract

To concretely present a construction method of a structure in which a foamed material is provided inside an outer skin member.SOLUTION: In a construction method for a structure in which a foam material is provided inside an outer skin member, air is introduced into the inside from an inlet portion provided in the outer skin member 20 by a blower to pressurize the inside, the outer skin member 20 is maintained in a state in which it swells by 70% to 80%, and a holding member that holds the outer skin member 20 so as not to move relative to an installation surface is disposed inside or outside the outer skin member 20. Additional air is then blown in so that the outer skin member 20 swells by a predetermined amount more than 100.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a construction method of a structure.

Background Art

[0002] Structures having an internal space are widely used in fields such as tents and temporary houses. Such structures are required to have a certain strength and durability that can withstand outdoor and indoor use. Various studies have been conducted on methods for enhancing the strength and durability of structures. For example, Patent Document 1 discloses a structure including a thin film body and a gas-mixed material. This structure is said to have strength and durability and a stable structure form. In Patent Document 1, a foamed resin (foaming material) is used as the gas-mixed material, and the foamed resin is sprayed onto the thin film body to integrate the thin film body and the gas-mixed material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, when constructing a structure, the structure is inflated with a pressurized gas from the inside of the thin film body, and then the gas-mixed material is sprayed and fixed inside the thin film body, but a more specific construction method is not disclosed.

[0005] The present disclosure specifically presents a construction method of a structure in which a foaming material is provided inside an outer skin member.

Means for Solving the Problems

[0006] The present disclosure relates to a construction method of a structure in which a foaming material is provided inside an outer skin member. Air is pressurized into the interior by a blower through an inlet portion provided in the outer skin member, and the outer skin member is maintained so as to expand by 70% to 80%. A skin holding step of arranging a holding member inside or outside the outer skin member to hold the outer skin member so as not to move relative to the installation surface, and an additional blowing step of performing additional blowing so that the outer skin member expands by a predetermined amount more than 100% after the arrangement of the holding member is completed.

Effect of the Invention

[0007] According to the present disclosure, a construction method of a structure in which a foaming material is provided inside an outer skin member can be specifically presented.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0009] Hereinafter, the present embodiment will be described with reference to the accompanying drawings. For ease of understanding the description, the same reference numerals are given to the same components in each drawing as much as possible, and redundant descriptions are omitted.

[0010] FIG. 1 shows an example of a structure formed by the construction method according to this embodiment. The structure 2 shown in FIG. 1 includes a cylindrical portion 22 and a conical portion 23. The conical portion 23 is connected to the upper part of the cylindrical portion 22, and the cylindrical portion 22 and the conical portion 23 are provided integrally. An inlet 31 and a window 32 are provided in the cylindrical portion 22.

[0011] The construction method according to this embodiment will be described with reference to FIGS. 2 to 6. This construction method will be described as constructing the structure 2 described with reference to FIG. 1.

[0012] As shown in FIG. 2, a mounting member 10, an outer skin member 20, and a blower 11 are prepared. The mounting member 10 is a member for installing the structure 2, and is, for example, a wood deck, the ground, a concrete floor, or asphalt. The blower 11 has a pressurizing ability to send air into the outer skin member 20 and fully inflate the outer skin member 20.

[0013] The outer skin member 20 is a thin film member that constitutes the outer skin of the structure 2. The outer skin member 20 may have a laminated structure. A plurality of members may be bonded together with an adhesive. The material of the outer skin member 20 is not particularly limited as long as it can be slightly stretched by tension, and any material that does not break when performing the construction method described below may be used. The outer skin member 20 preferably has a material that does not break under the pressure of the gas introduced into it when the gas is introduced into its interior.

[0014] Examples of the outer skin member 20 include a resin base material (which may be a resin film or a resin sheet), a paper base material, and a leather base material. The material of the outer skin member 20 may be other than these. Examples of the resin base material include acrylic, polyolefin, polyester, nylon, polyethylene, and polyvinyl chloride. Examples of polyolefin include polypropylene. Examples of polyester include polyethylene terephthalate. As an example, the resin base material contains an ultraviolet absorber. Examples of the paper base material include high-quality paper, Japanese paper, Western paper, synthetic paper, and non-woven fabric.

[0015] The outer skin member 20 as an example has water resistance. The outer skin member 20 as an example has a water-resistant surface on the outer surface. Examples of the water-resistant outer skin member 20 include polyester, acrylic resin, polyvinyl chloride, etc.

[0016] The outer skin member 20 as an example has water repellency. The outer skin member 20 as an example has a water-repellent surface on the outer surface. Examples of the water-repellent outer skin member 20 include fluororesin, silicone, etc.

[0017] The outer skin member 20 as an example has water resistance and water repellency. The outer skin member 20 as an example has a single-layer structure with water resistance and water repellency. The outer skin member 20 as an example has a laminated structure in which a water-resistant member and a water-repellent member are laminated.

[0018] The inner surface portion of the outer skin member 20 as an example is subjected to an adhesion treatment. Examples of the adhesion treatment include corona discharge treatment, flame treatment, ozone treatment, ultraviolet treatment, radiation treatment, roughening treatment, chemical treatment, plasma treatment, and grafting treatment, etc. The outer skin member in this form has good adhesion to the foaming material.

[0019] Figure 3 is a plan view seen from the A direction of Figure 2. As shown in Figure 2, a fixing portion 20E is provided in an annular shape around the outer skin member 20. Fixing points 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212 for fixing the outer skin member 20 to the installation member 10 are provided at equal intervals on the fixing portion 20E.

[0020] When the fixing part 20E is regarded as the clock face, the fixing point 212 is provided at the 12 o'clock position. Similarly, the fixing point 201 is at the 1 o'clock position, the fixing point 202 is at the 2 o'clock position, the fixing point 203 is at the 3 o'clock position, the fixing point 204 is at the 4 o'clock position, the fixing point 205 is at the 5 o'clock position, the fixing point 206 is at the 6 o'clock position, the fixing point 207 is at the 7 o'clock position, the fixing point 208 is at the 8 o'clock position, the fixing point 209 is at the 9 o'clock position, the fixing point 210 is at the 10 o'clock position, and the fixing point 211 is at the 11 o'clock position, respectively.

[0021] The fixing point 206 is provided at a position corresponding to the entrance 31 of the structure 2. Therefore, the above positional relationship can also be the positional relationship when the fixing point 206 provided at the position corresponding to the entrance 31 of the structure 2 is regarded as the 6 o'clock position on the clock face.

[0022] Pressurize the inside with air by the blower 11 from the entrance part provided in the outer skin member 20, maintain the outer skin member 20 to be inflated by 70% to 80%, drive a screw into the fixing point 206 provided at the entrance part, and fix it to the installation member 10.

[0023] Subsequently, while pulling the outer skin member 20 outward, drive a screw into the fixing point 212 on the opposite side on the line connecting the fixing point 206 and the center of the outer skin member 20, and fix it to the installation member 10.

[0024] Subsequently, while pulling the outer skin member 20 outward, drive screws into the fixing points 203 and 209 and fix them to the installation member 10. Similarly, while pulling the outer skin member 20 outward, drive screws into the fixing points 204 and 210 and fix them to the installation member 10. Similarly, while pulling the outer skin member 20 outward, drive screws into the fixing points 201 and 207 and fix them to the installation member 10. Similarly, while pulling the outer skin member 20 outward, drive screws into the fixing points 205 and 211 and fix them to the installation member 10. Similarly, while pulling the outer skin member 20 outward, drive screws into the fixing points 202 and 208 and fix them to the installation member 10. After the fixing of the fixing points 201 to 212 is completed, drive screws into the fixing points between each of the fixing points 201 to 212 and fix them to the installation member 10.

[0025] In addition, when it is difficult or impossible to drive screws into the installation member 10, such as in the case of concrete floors or asphalt, weights may be placed inside the outer skin member 20 to hold it in place against the installation member 10. For example, a holding plate having a skin holding portion along the outer periphery of the outer skin member 20 may be disposed inside the outer skin member 20, and a weight may be placed on the holding plate.

[0026] Subsequently, increase the output of the blower 11 and perform additional blowing so that the outer skin member 20 bulges by a predetermined amount more than 100%. The outer skin member 20 bulging by a predetermined amount more than 100% means a state in which 1 to 2% of the indoor air pressure for the outer skin member 20 to bulge by 100% is added to the indoor air pressure for the outer skin member 20 to bulge by 100%. More specifically, the outer skin member 20 bulging by a predetermined amount more than 100% means, for example, a state in which the indoor air pressure is 20 hPa ± 5 hPa higher than the outside air pressure. At this stage, confirm that the outer skin member 20 does not lift off from the installation member 10.

[0027] Subsequently, as an example, a heat-insulating floor material (not shown) is spread on the floor inside the outer skin member 20. The floor material is pre-cut in accordance with the shape of the interior covered by the outer skin member 20, with the thickness of the sprayed heat-insulating material reduced. The spread floor material is covered with a curing material and cured. Subsequently, a light-shielding sheet is placed over the outer skin member 20 to suppress the rise in the internal air temperature due to sunlight.

[0028] Subsequently, as an example, as shown in Fig. 4(A), a measuring rod 15 is installed inside the outer skin member 20 at a density of approximately one per two square meters. The measuring rod 15 has a flat plate portion 151 and a needle portion 152. The measuring rod 15 is fixed by attaching the flat plate portion 151 to the outer skin member 20 with double-sided tape or the like.

[0029] Fig. 5 shows the installation positions of the measuring rod 15 in the lower outer skin member 20L corresponding to the cylindrical portion 22, which is a part of the outer skin member 20. Fig. 5(A) is a plan view of the lower outer skin member 20L, and Fig. 5(B) is a perspective view of the lower outer skin member 20L.

[0030] As shown in Fig. 5(A) and Fig. 6(B), the measuring rod 15 is installed at measurement points P1, P2, P3, P4, P5, P6.

[0031] Fig. 6 shows the installation positions of the measuring rod 15 in the upper outer skin member 20U corresponding to the conical portion 23, which is a part of the outer skin member 20. As shown in Fig. 6, the measuring rod 15 is installed at measurement points P11, P12, P13, P14.

[0032] Continuing the explanation with reference to Fig. 4. After installing the measuring rod 15 at a predetermined position as shown in Fig. 4(A), a foaming material is attached to the inside of the outer skin member 20. For this operation, it is preferable for the operator to wear work clothes equipped with a water-cooling function. The operator is further preferably dressed in protective clothing and protective covers.

[0033] Subsequently, as shown in FIG. 4(B), the foaming material is adhered to a position where part or all of the measuring rod 15 is hidden to form a layer of the first foaming material 41. The layer of the first foaming material 41 has a thickness of, for example, about 10 mm. When forming the layer of the first foaming material 41, it is preferable to thinly and unevenly adhere the foaming material several times.

[0034] Subsequently, as shown in FIG. 4(C), the foaming material is adhered to a position where all of the measuring rod 15 is hidden to form a layer of the second foaming material 42. The layer of the second foaming material 42 has a thickness of, for example, about 40 mm. When forming the layer of the second foaming material 42, it is preferable to adhere the foaming material in two portions of 20 mm each.

[0035] The foaming material may be any material that can foam at a predetermined foaming ratio, and conventionally known foaming materials can be appropriately selected and used. The foaming material foams and cures after adhesion. Examples of the foaming material include acrylic, polyurethane, polystyrene, phenol, polyvinyl chloride, polyolefin, urea resin, urethane-urea resin, silicone, polyimide, melamine, glass, ceramics, soil, and explosive food materials. Other foaming materials can also be used.

[0036] There is no limitation on the foaming ratio of the foaming material. As an example, the foaming material has a foaming ratio of 10 times or more and 100 times or less, preferably 30 times or more and 50 times or less. The foaming material preferably has a linear expansion coefficient higher than that of the outer skin member 20. The foaming material preferably foams with heat generation or heat absorption after adhesion. The foaming material may contain, as other components, a liquid solvent, a gas solvent, a functional material, etc.

[0037] The adhesion of the foaming material is carried out by bringing a foaming device (not shown) into the internal space of the outer skin member 20 and the operator spraying the foaming material onto the inner surface of the outer skin member 20. As an example, the foaming device has a hose capable of injecting the foaming material, a nozzle, etc. As an example, the foaming device is a spray gun. When the foaming material is adhered by coating, conventionally known coating means can be appropriately selected and used.

[0038] When spraying the foaming material, as an example, set the temperature of the foaming device to around 40°C and adjust it so that the temperature at the nozzle tip becomes 38°C. The spraying pressure is 4 kg / cm 2 is the basic setting.

[0039] After the adhesion of the foaming material described above is completed, a mesh material may be installed inside, and the adhesion of the foaming material described above may be repeated once again. In this case, the thickness of the entire foaming material is, for example, 100 mm.

[0040] Subsequently, an opening such as a window 32 is provided in the structure 2. When the foaming material is adhered, the opening is covered with a curing tape so that the foaming material is not adhered. The foaming material maintains a specified thickness (50 mm or 100 mm) up to 10 mm outside the curing position.

[0041] Regarding the treatment of the opening, as an example, along the guide line of the opening, cut the outer skin member 20, fold the outer skin member 20 back to the indoor side, and fix it with a tucker or the like. Adhere the foaming material so as to cover the portion where the outer skin member 20 is folded back and fixed to the indoor side to form a layer of the foaming material. A window part may be attached to the opening corresponding to the window 32.

[0042] [Appendix] The following Appendices 1 to 6 can be arbitrarily combined as long as there is no technical contradiction.

[0043] [Appendix 1] A construction method of a structure in which foaming materials 41 and 42 are provided inside the outer skin member 20, An outer skin holding step of pressurizing the inside with air by a blower 11 from an inlet portion provided in the outer skin member 20, maintaining the outer skin member 20 to expand by 70% to 80%, and arranging a holding member for holding the outer skin member 20 so as not to move with respect to the installation surface inside or outside the outer skin member 20; An additional blowing step of performing additional blowing so that the outer skin member 20 expands by a predetermined amount more than 100% after the arrangement of the holding member is completed. A construction method of a structure including this.

[0044] [Appendix 2] The outer skin holding process includes a first fixing step of maintaining the outer skin member 20 so that it bulges by 70% to 80% and fixing the first fixing point (fixing point 206) provided at the inlet portion to the installation surface by a holding member; a second fixing step of pulling the outer skin member 20 outward and fixing the second fixing point (fixing point 212) on the opposite side on the line connecting the first fixing point and the center of the outer skin member 20 to the installation surface by a holding member; a third fixing step of pulling the outer skin member 20 outward and fixing the third fixing point (fixing point 203) located between the first fixing point and the second fixing point and the fourth fixing point (fixing point 209) on the opposite side on the line connecting the third fixing point and the center of the outer skin member 20 to the installation surface by a holding member; and a fourth fixing step of fixing all other fixing points to the installation surface by a holding member, which is a construction method of the structure described in Appendix 1.

[0045] In addition, in this embodiment, the fixing point 206 which is the first fixing point is described as being at the 6 o'clock position, the fixing point 212 which is the second fixing point is at the 12 o'clock position, the fixing point 203 which is the third fixing point is at the 3 o'clock position, and the fixing point 209 which is the fourth fixing point is at the 9 o'clock position. However, these are just examples, and the positions of the respective fixing points are not limited to this. Also, in this embodiment, a screw is cited as an example of the holding member, but other fixing means can be adopted as long as each fixing point can be fixed to the installation surface.

[0046] [Appendix 3] The outer skin holding process includes an internal holding step of disposing a holding plate having an outer skin holding portion along the outer periphery of the outer skin member 20 inside the outer skin member 20 and placing a weight on the holding plate, which is a construction method of the structure described in Appendix 1. In Appendix 3, it is preferable that the holding plate has a thickness such that it does not interfere with the spraying of the foaming materials 41, 42 sprayed inside the outer skin member 20. The weight placed on the holding plate is preferably placed on the central side to such an extent that it does not interfere with the spraying of the foaming materials 41, 42 sprayed inside the outer skin member 20, rather than at the periphery of the holding plate.

[0047] [Appendix 4] Following the outer skin holding step, a measuring rod installation step of installing a measuring rod 15 for measuring the thickness of the foams 41 and 42 inside the outer skin member 20, and a foam attachment step of attaching a foaming material that becomes the foams 41 and 42 inside the outer skin member 20 so that the measuring rod 15 is buried, which is a construction method of the structure according to any one of Appendices 1 to 3.

[0048] [Appendix 5] The foam attachment step is performed by a worker wearing work clothes having a water cooling function of reducing the body sensation temperature of the wearer by circulating water, which is a construction method of the structure according to Appendix 4.

[0049] [Appendix 6] Before the foam attachment step, prevent the formation of foam at the position corresponding to the opening of the structure 2, and after the foam attachment step, include an opening processing step of processing the outer skin member 20 to provide an opening in the structure 2 and providing foam at the processed portion of the outer skin member 20, which is a construction method of the structure according to Appendix 4 or 5.

[0050] As described above, the present embodiment has been described with reference to specific examples. However, the present disclosure is not limited to these specific examples. Those obtained by appropriately making design changes by those skilled in the art to these specific examples are also included in the scope of the present disclosure as long as they have the features of the present disclosure. Each element included in each of the above-described specific examples and its arrangement, conditions, shape, etc. are not limited to those illustrated and can be appropriately changed. Each element included in each of the above-described specific examples can be appropriately combined as long as no technical contradiction occurs.

Explanation of Reference Numerals

[0051] 2: Structure 10: Installation member 11: Blower 15: Measuring rod 151: Flat plate portion 152: Needle portion 20: Outer skin member 20E: Fixed portion 20L: Lower outer skin member 20U: Upper outer skin member 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212: Fixing points 22: Cylindrical part 23: Conical part 31: Inlet 32: Window 41: First foam material 42: Second foam material P1, P2, P3, P4, P5, P6, P11, P12, P13, P14: Measurement points

Claims

1. A construction method for a structure in which a foaming material is provided inside a skin member, pressurizing the inside with air by a blower from an inlet portion provided in the skin member, maintaining the skin member so as to expand by 70% to 80%, and arranging a holding member for holding the skin member so as not to move with respect to the installation surface inside or outside the skin member; an outer skin holding step; an additional air blowing step of performing additional air blowing so that the skin member expands by a predetermined amount more than 100% after the arrangement of the holding member is completed, the construction method of the structure including.

2. The outer skin holding step is, a first fixing step of maintaining the skin member so as to expand by 70% to 80% and fixing a first fixing point provided at the inlet portion to the installation surface by the holding member; a second fixing step of fixing a second fixing point on the opposite side on the line connecting the first fixing point and the center of the skin member to the installation surface by the holding member while pulling the skin member outward; a third fixing step of fixing a third fixing point located between the first fixing point and the second fixing point and a fourth fixing point on the opposite side on the line connecting the third fixing point and the center of the skin member to the installation surface by the holding member while pulling the skin member outward; a fourth fixing step of fixing all other fixing points to the installation surface by the holding member, the construction method of the structure according to claim 1 including.

3. The outer skin holding step is, including an internal holding step of arranging a holding plate having an outer skin holding portion along the outer periphery of the skin member inside the skin member and placing a weight on the holding plate, the construction method of the structure according to claim 1.

4. subsequent to the outer skin holding step, a measuring rod installation step of installing a measuring rod for measuring the thickness of the foaming material inside the skin member; a foaming material adhesion step of adhering a foaming material to be the foaming material inside the skin member so that the measuring rod is buried, the construction method of the structure according to any one of claims 1 to 3 including.

5. The foaming material adhesion step is performed by an operator wearing a work uniform having a water cooling function of reducing the body temperature of the wearer by circulating water, the construction method of the structure according to claim 4.

6. Before the foaming material adhesion step, a foaming material is not formed at a position corresponding to the opening of the structure, The construction method of the structure according to claim 4, including an opening processing step of processing the outer skin member after the foamed material adhesion step to provide an opening in the structure, and providing the foamed material at the processed portion of the outer skin member.

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