Curing sheet product, curing zone, and method for constructing curing zone

Abstract

To provide a curing sheet which can be easily attached to a structural member without a gap.SOLUTION: A structural member corresponding curing sheet 10 is provided with a curing sheet 12 having a laminated structure including a fire-resistant heat-resistant layer 14 and an airtight layer 16, an insertion hole 18 formed in the curing sheet 12, a slit 20 extending from the peripheral edge of the insertion hole 18 to the end edge of the curing sheet 12, and an annular tubular member 36, which has a substantially annular tubular including a divided part 38, with the divided part 38 aligned with the slit 20 and mounted along the perimeter of the insertion hole 18, expandable by internal pressurization. Thus, when the tubular member 36 is pressurized with the structural member disposed on the inner peripheral side of the tubular member 36, the tubular member 36 can be brought into close contact with the outer periphery of a structural member. Furthermore, since a structural member 86 is disposed in the insertion hole 18 and the tubular member 36 through the slit 20 and the divided part 38, and the tubular member 36 is pressurized, the tubular member can be easily installed.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a protective sheet product, a protective section using the protective sheet product, and a method for constructing the protective section. [Background technology]

[0002] At outdoor work sites, such as construction sites, weather and the surrounding environment can affect the quality of work. For example, when welding or painting high-altitude outdoor structures, there is a high risk of poor welding caused by wind disturbance of the shielding gas used in gas-shielded arc welding, or poor painting, such as peeling off of paint applied under high humidity. For this reason, it has traditionally been necessary to set up a protective section in which scaffolding is surrounded by sheet material (protection sheet) to enable work to be performed in a space less affected by weather and the surrounding environment. However, if the structure being worked on contains long structural members that extend both inside and outside the protective section, sheet material must also be installed around the areas where the structural members penetrate. For example, when such structural members are steel pipes, methods are known in which sheet material is attached to the outer periphery of the steel pipe using various fasteners or other fasteners (see Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 06-322995 [Patent Document 2] Japanese Patent Application Publication No. 2017-170415 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when attaching a sheet material to a cylindrical steel pipe, for example, the method of wrapping the sheet material as disclosed in Patent Document 1 makes it difficult to attach the sheet material if the steel pipe has a large diameter. Furthermore, the fastening method using fasteners as disclosed in Patent Document 2 makes it difficult to tightly attach the cylindrical steel pipe and the sheet material without any gaps. Thus, when attaching the sheet material to a section through which a structural member penetrates, it is difficult to cover the member with the sheet material according to its shape, resulting in many issues such as gaps, poor fit, and an inability to secure work space. Furthermore, in order to perform welding or painting work within such a curing section, it is necessary to provide wind protection and ventilation functions, and a space with minimal gaps and airtightness is required.

[0005] The present invention has been made in view of the above-mentioned problems, and its object is to easily attach a protective sheet to a structural member without leaving any gaps. [Means for solving the problem]

[0006] (Aspects of the invention) The following embodiments of the present invention are examples of the configuration of the present invention, and are described in terms to facilitate understanding of the various configurations of the present invention. Each term does not limit the technical scope of the present invention, and while taking into consideration the best mode for carrying out the invention, some of the components of each term may be replaced or deleted, or other components may be added, and these may also be included in the technical scope of the present invention.

[0007] (1) A curing sheet product used to form a curing section surrounding a portion of a long structural member in a structure using a curing sheet, the curing sheet having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer; an insertion hole formed in the curing sheet and through which the structural member is inserted; a slit extending from the periphery of the insertion hole to the edge of the curing sheet; and a tubular member that is roughly annular with a divided portion in part of its extending direction and that expands when pressurized internally and is attached along the periphery of the insertion hole with the divided portion aligned with the slit.

[0008] The curing sheet product described in this section is used in a curing section surrounding a portion of a long structural member of a structure, and includes a curing sheet, an insertion hole, a slit, and a tubular member. The curing sheet has a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, and is usually installed so that the fire-resistant and heat-resistant layer is on the inside of the curing section. Furthermore, the curing sheet is formed with an insertion hole and a slit. The insertion hole is a portion through which a long structural member is inserted and is formed to match the shape and size of the structural member. The slit extends from the periphery of the insertion hole to the edge of the curing sheet and is used as a portion through which the structural member is inserted when the curing sheet product is installed. That is, the slit is opened from the edge side of the curing sheet to the insertion hole side, and the curing sheet is moved or lowered until the structural member is placed in the insertion hole through the opened slit.

[0009] Furthermore, the tubular member expands when pressurized internally, has a segment in a portion of its extension direction, and forms a roughly annular shape interrupted by the segment. Similarly to the insertion hole, the tubular member is formed to fit the shape and size of the structural member, and is attached around the insertion hole with the segment aligned with the slit. Therefore, when the protective sheet product is installed as described above, the structural member is passed through the slit and the segment of the tubular member and positioned on the inner periphery of the insertion hole and the tubular member. The tubular member only needs to be attached to the protective sheet before the protective sheet product is installed in the protective section.

[0010] With this configuration, when a structural member is placed inside the tubular member and the tubular member is pressurized, the curing sheet product described in this section adheres tightly to the outer periphery of the structural member's penetration portion. That is, the tubular member, which is formed to match the shape and size of the structural member, uses its expansion properties to adhere tightly to the structural member, allowing it to adhere tightly to structural members of various shapes. Furthermore, installation is easy; simply inserting the structural member through the insertion hole and the tubular member and pressurizing the inside of the tubular member is all that is required. Therefore, when a curing sheet product is used to construct a curing compartment, even if a structure has structural members that straddle the inside and outside of the curing compartment, gaps are not formed around the outer periphery of the structural member's penetration portion, making it easy to construct a curing compartment with excellent airtightness. Furthermore, by placing the fire- and heat-resistant layer of the curing sheet product inside the curing compartment, damage to the curing sheet product is prevented even when welding or other work is performed inside the curing compartment. Furthermore, the airtight layer ensures airtightness and provides sufficient wind protection.

[0011] (2) A curing sheet product used in a structure having a long structural member to form a curing section surrounding a portion of the structural member using a curing sheet, the curing sheet having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, and a tubular member having a roughly annular shape with a divided portion in part of the extending direction, the tubular member being attached to the curing sheet in a state where the divided portion is aligned with a slit formed along the periphery of an insertion hole formed in the curing sheet from the periphery of the insertion hole to the edge of the curing sheet, the structural member being inserted into the insertion hole and the inner side of the tubular member, and the curing sheet product being installed in a state where the inside of the tubular member is pressurized and expanded.

[0012] The curing sheet product described in this section is used in a curing section surrounding a portion of a long structural member of a structure, and includes a curing sheet and a tubular member attached to the curing sheet. The curing sheet has a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, and is usually installed so that the fire-resistant and heat-resistant layer is on the inside of the curing section. Furthermore, the curing sheet is formed with insertion holes and slits. The insertion holes are portions through which long structural members are inserted and are formed to match the shape and size of the structural members. The slits extend from the periphery of the insertion holes to the edge of the curing sheet and are used as portions through which the structural members are inserted when the curing sheet product is installed. The tubular member expands when pressurized internally, has a divided portion in a portion of its extension direction, and is generally annular in shape, interrupted by the divided portion. Furthermore, the tubular member is formed to match the shape and size of the structural member, just like the insertion hole, and is attached along the periphery of the insertion hole with the divided portion aligned with the slit.

[0013] The protective sheet product described in this specification is installed in a protective section with a structural member inserted through the insertion hole and the inner periphery of the tubular member, and the inside of the tubular member pressurized and expanded. This allows the tubular member to fit tightly against the outer periphery of the structural member's insertion portion. That is, the tubular member, which is shaped to fit the shape and size of the structural member, uses its expansion properties to adhere tightly to the structural member, allowing it to fit tightly to structural members of various shapes. When installing the protective sheet product, a slit is opened from the edge of the protective sheet to the insertion hole, and the tubular member is also opened at the divided portion. The positions of the protective sheet and the tubular member are then adjusted through the opened slit and divided portion until the structural member is positioned inside the insertion hole and the tubular member. After that, the installation process is easily performed because the inside of the tubular member is pressurized with the structural member inserted through the insertion hole and the tubular member.

[0014] Therefore, by constructing a curing compartment using the curing sheet product described in this section, even if the structure has structural members that straddle the inside and outside of the curing compartment, gaps are not formed around the outer periphery of the penetration parts of the structural members, and a curing compartment with excellent airtightness can be easily constructed. Furthermore, by arranging the fire-resistant and heat-resistant layer side of the curing sheet product on the inside of the curing compartment, damage to the curing sheet product is prevented even if welding work or the like is performed within the curing compartment, and furthermore, the airtight layer ensures airtightness and also provides sufficient wind protection function.

[0015] (3) In the above item (2), the opposing ends of the tubular member sandwiching the divided portion are connected by a length adjustment member that can adjust the distance between the ends. The protective sheet product described in this specification further includes a length adjustment member connecting the ends of the tubular members. That is, the roughly annular tubular member having a segment has opposing ends sandwiching the segment. The length adjustment member connects the ends of the tubular members so that the distance between them can be adjusted when a structural member is inserted into the insertion hole, i.e., when the structural member is inserted into the inner periphery of the tubular member and the interior of the tubular member is pressurized. This allows for flexible adjustment of the distance between the ends of the tubular members according to the circumferential length of the structural member's penetration portion, while still providing a stable connection between the ends of the tubular members. This further improves the adhesion of the tubular member to the structural member, and ultimately the adhesion of the protective sheet product to the structural member.

[0016] (4) A protective sheet product according to the above item (2), wherein the slits are closed by a slit joining means. In the curing sheet product described in this section, the slits used as passages for placing structural members in the insertion holes are closed by the slit joining means after the structural members have been inserted into the insertion holes and the inner periphery of the tubular members, thereby ensuring sufficient airtightness in the curing section in which the curing sheet product is used, without the airtightness being impaired by the slits in the curing sheet product.

[0017] (5) In the above item (2), the laminated structure is a protective sheet product in which a rubber-coated layer is laminated on a fire-resistant and heat-resistant fiber base material. The protective sheet product described in this section has a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, which is formed by laminating a rubber-coated layer onto a fire-resistant and heat-resistant fiber substrate. That is, the fire-resistant and heat-resistant layer is formed by the fire-resistant and heat-resistant fiber substrate, and the airtight layer is formed by the rubber-coated layer. This makes it relatively easy to achieve a laminated structure that satisfies the properties required of each layer, while taking into account factors such as the affinity between the fiber substrate and the rubber-coated layer used.

[0018] (6) In the above item (2), the protective sheet product is arranged so that the tubular member is perpendicular to the extending direction of the structural member when viewed from the side perpendicular to the extending direction of the structural member. In the protective sheet product described in this section, when a structural member is inserted into the insertion hole and the inner peripheral side of the tubular member attached around the insertion hole, the tubular member is installed so that, in a side view perpendicular to the extending direction of the structural member, the tubular member is perpendicular to the extending direction of the structural member. In other words, for example, a tubular member that is roughly annular in a front view appears to be roughly linear in a side view, and the tubular member is installed so that this roughly linear shape is perpendicular to the extending direction of the structural member.

[0019] Here, when the tubular member is installed not perpendicular to the extension direction of the structural member, the position of the tubular member is easily displaced, and gaps are likely to occur between the tubular member and the structural member. In contrast, in the protective sheet product described in this section, the tubular member is installed perpendicular to the extension direction of the structural member, so that the tubular member, which is pressurized and expanded, applies a uniform force to the same outer circumference of the penetration part of the structural member, which is perpendicular to the extension direction of the structural member in a side view. Therefore, even if the protective sheet product is exposed to wind, for example, the position of the tubular member is less likely to displace, and gaps are prevented from occurring between the structural member and the protective sheet product.

[0020] (7) In the protective sheet product according to the above item (2), the insertion hole has a circular shape in a plan view, and the tubular member has a roughly annular shape. The curing sheet product described in this section is compatible with columnar or cylindrical structural members, and the insertion holes through which the structural members are inserted are circular in plan view, and the tubular members attached around the insertion holes are roughly annular. As a result, the tubular members expand due to internal pressure and fit tightly to the outer periphery of the penetration part of the columnar or cylindrical structural member, without any gaps, making it easy to create an airtight curing compartment in a structure having columnar or cylindrical structural members.

[0021] (8) In a structure having a long structural member, a curing section is formed of a curing sheet based on a work scaffold and surrounds a part of the structural member, in which a curing sheet product described in any one of (2) to (7) above is installed in the part where the structural member passes through, and in other parts, a plurality of sheet materials having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer are installed, and both the curing sheet product and the sheet materials are installed with their respective fire-resistant and heat-resistant layer sides on the inside of the curing section.

[0022] The curing compartment described in this section is constructed by using a curing sheet product, as described in sections (2) through (7) above, and multiple sheet materials, each of which has a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, similar to the curing sheet product. Specifically, the curing sheet product is installed in the area where structural components extending inside and outside the curing compartment penetrate, and multiple sheet materials are installed in the other areas. The fire-resistant and heat-resistant layer of the curing sheet product is installed inside the curing compartment, and the fire-resistant and heat-resistant layer of each sheet material is installed inside the curing compartment. This not only allows for work in rainy weather, but also allows for welding work inside the curing compartment without any problems. The curing compartment is airtight and windproof, making it suitable for gas-shielded arc welding. Furthermore, ventilation is easily installed, and internal temperature and humidity are controlled, improving the painting environment, which is otherwise limited by high humidity. Furthermore, the structure can be easily constructed using work scaffolding as a base, with only a portion of the structure surrounding it as needed.

[0023] (9) In the above paragraph (8), a sheet-like cover piece is attached near the upper edge of each of the plurality of side sheet materials that are installed in the portions corresponding to the sides of the protective section, along the extending direction of the upper edge, and the cover piece is arranged to cover the attachment portion of the side sheet material to the work scaffolding, and the cover piece attached to the lower side sheet material and the lower end of the upper side sheet material are detachably joined. In the curing section described in this section, when the sheet materials installed on the sides of the curing section are defined as side sheet materials among the multiple sheet materials used as curing sheets, a cover piece is attached to each side sheet material. That is, a sheet-like cover piece is attached near the upper edge of each of the multiple side sheet materials installed on the sides of the curing section along the extending direction of the upper edge.

[0024] Here, each side sheet material is typically attached near its upper end to the work scaffold and installed so as to be suspended from the work scaffold. Therefore, the cover piece is arranged to cover from the outside the attachment portion of the side sheet material to the work scaffold. This prevents gaps from forming in the attachment portion of the side sheet material, ensuring airtightness. Furthermore, the cover piece is also used to connect adjacent side sheet materials in the vertical direction, and the cover piece attached to the lower side sheet material and the lower end of the upper side sheet material are detachably joined. Therefore, the work of connecting and removing the side sheet materials in the vertical direction can be easily performed via the cover piece.

[0025] (10) In the above item (9), the outer surface of the cover piece near the upper end attached to the lower side sheet material and the outer surface of the upper side sheet material near the lower end are stacked facing each other, pulled into the inside of the protective section, and joined by a linear fastener. The protective section described in this section is one in which, when adjacent side sheet materials in the vertical direction are connected using cover pieces, the cover piece attached to the lower side sheet material and the upper side sheet material are joined by a line fastener.

[0026] More specifically, the outer surface of the cover piece attached to the lower side sheet material near the upper end and the outer surface of the upper side sheet material near the lower end are overlapped in an opposing manner, pulled into the inside of the protective section, and joined by linear fasteners. The outer surfaces of the cover piece and the side sheet material here refer to the surfaces facing the outside of the protective section before joining. As a result, the cover piece of the lower side sheet material covers the attachment portion of the lower side sheet material to the work scaffold, and the cover piece of the lower side sheet material and the upper side sheet material are firmly joined by linear fasteners over a wide overlapping area. This efficiently and easily achieves the covering of the attachment portion of the side sheet material with the cover piece and the detachable joining of adjacent side sheet materials via the cover piece. Furthermore, because the cover piece and side sheet material are pulled inward and joined as described above, the joining work can be performed inside the protective section.

[0027] (11) In paragraph (8) above, in the structure or the work scaffolding, in addition to the structural member, another long structural member exists, and a cut-out sheet material is installed in the portion where the other structural member passes through, and the cut-out is cut in a shape that imitates the cross-sectional shape of the other structural member, and has an insertion portion through which the other structural member is inserted and a through portion that extends from the insertion portion to the edge of the cut-out sheet material, and when the other structural member is inserted through the insertion portion and the cut-out sheet material is installed, each end of the insertion portion and the through portion are closed by a cut-out joining means to form a protective section.

[0028] The curing section described in this section corresponds to a case where a structure or work scaffolding contains, in addition to a long structural member for which the curing sheet product is used, another long structural member extending between the inside and outside of the curing section. Specifically, a cut-out sheet material, in which a cut is provided in the sheet material, is installed as a curing sheet in the area where the other structural member will be installed. The cut-out in the cut-out sheet material includes an insertion portion and a through portion. The insertion portion is a portion through which the other structural member extending between the inside and outside of the curing section is inserted, and is formed by cutting a shape that matches the cross-sectional shape of the other structural member. The through portion is formed by cutting from the insertion portion to the edge of the cut-out sheet material and is used as a portion through which the other structural member is inserted when the cut-out sheet material is installed. In other words, the through portion is opened from the edge side of the cut-out sheet material to the insertion portion side, and the cut-out sheet material is moved or lowered through the opened through portion until the other structural member is placed in the insertion portion.

[0029] Then, with another structural member inserted through the insertion portion and the incised sheet material in place, each end of the insertion portion and the through-portion are closed by the incision joining means. That is, the insertion portion, cut to a shape that matches the cross-sectional shape of the other structural member, will have three ends if the cross-sectional shape of the other structural member is T-shaped, and each of these ends is closed by the incision joining means except for the insertion portion of the other structural member. Furthermore, after the through-portion is used as a passageway until the other structural member is placed in the insertion portion, the entire portion is closed by the incision joining means. This prevents gaps from forming in the incisions, even when the incised sheet material is used, ensuring the airtightness of the curing section. Therefore, the use of the curing sheet product and the incised sheet material allows it to be adapted to structural members of various shapes and sizes, flexibly adapting to various construction work sites.

[0030] (12) A method for constructing a protective section in a structure having long structural members, using a work scaffold as a base, by surrounding a portion of the structural member with a protective sheet, the method comprising: installing a protective sheet product according to any one of (2) to (7) above in the portion where the structural member passes through, and installing a plurality of sheet materials having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer in other portions; installing both the protective sheet product and the sheet materials with their respective fire-resistant and heat-resistant layer sides inside the protective section; and, when installing the protective sheet product, passing the structural member through the slit and the divided portion into the insertion hole and the inner periphery of the tubular member, and then pressurizing the inside of the tubular member to tightly fit the tubular member to the outer periphery of the structural member.

[0031] The method for constructing a curing compartment described in this section corresponds to the curing compartment described in section (8) above, and uses a curing sheet product as described in sections (2) through (7) above and multiple sheet materials that, like the curing sheet product, have a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer as the curing sheets that form the curing compartment. Specifically, the curing sheet product is installed in the area where the long structural member passes through, and multiple sheet materials are installed in other areas. The fire-resistant and heat-resistant layer of the curing sheet product is installed inside the curing compartment, and the fire-resistant and heat-resistant layer of each sheet material is installed inside the curing compartment. This not only allows for work in rainy weather, but also allows for smooth welding work inside.

[0032] Furthermore, when installing the curing sheet, the structural member is inserted through the slit and the divided portion of the tubular member into the insertion hole and the inner periphery of the tubular member, and then the inside of the tubular member is pressurized to expand and seal the tubular member against the outer periphery of the structural member. This prevents gaps from forming around the outer periphery of the structural member's penetration portion, creating a curing area with excellent airtightness and windproof properties, making it suitable for gas-shielded arc welding. Furthermore, ventilation is easily installed, and the internal temperature and humidity are controlled, improving the painting work environment, which is subject to work restrictions in high humidity. Furthermore, curing areas can be easily constructed around only a portion of the structure as needed, using work scaffolding as a base.

[0033] (13) In the above paragraph (12), a method for constructing a protective section includes attaching a sheet-like cover piece to the vicinity of the upper edge of each of a plurality of side sheet materials to be installed in the portions corresponding to the sides of the protective section, along the extending direction of the upper edge, and when the vicinity of the upper edge of the side sheet material is attached to the work scaffolding and installed, the cover piece is positioned to cover the attachment portion of the side sheet material to the work scaffolding, and when connecting adjacent side sheet materials in the vertical direction, the cover piece attached to the lower side sheet material and the lower end portion of the upper side sheet material are detachably joined.

[0034] The method for constructing a curing compartment described in this section corresponds to the curing compartment described in section (9) above. When the side sheet materials are used as the curing sheets and the sheet materials to be installed on the sides of the curing compartment are selected as the side sheet materials, a cover piece is attached to each side sheet material. Specifically, a sheet-like cover piece is attached near the upper edge of each of the side sheet materials to be installed on the sides of the curing compartment, along the extending direction of the upper edge. Each side sheet material is typically attached near its upper edge to a work scaffold and suspended from the work scaffold. Therefore, the cover piece is arranged to cover the attachment portion of the side sheet material to the work scaffold from the outside. This prevents gaps from forming in the attachment portion of the side sheet material, ensuring airtightness. Furthermore, the cover piece is also used to connect adjacent side sheet materials in the vertical direction, and the cover piece attached to the lower side sheet material is detachably joined to the lower end of the upper side sheet material. Therefore, the operation of connecting and disconnecting the side sheet materials in the vertical direction can be easily performed via the cover piece.

[0035] (14) In the above item (13), when connecting adjacent side sheet materials in the vertical direction, the outer surface of the cover piece near the upper end attached to the lower side sheet material and the outer surface of the upper side sheet material near the lower end are overlapped in an opposing manner, pulled into the inside of the protective section, and joined with a linear fastener. The method of constructing a protective section described in this section corresponds to the protective section described in section (10) above, and when connecting adjacent side sheet materials in the vertical direction using a cover piece, the cover piece attached to the lower side sheet material and the upper side sheet material are joined together using a wire fastener.

[0036] More specifically, the outer surface of the cover piece attached to the lower side sheet material near the upper end and the outer surface of the upper side sheet material near the lower end are overlapped facing each other and pulled into the inside of the protective section, where they are joined with linear fasteners. The outer surfaces of the cover piece and the side sheet material here refer to the surfaces facing the outside of the protective section before joining. This allows the cover piece of the lower side sheet material to cover the attachment portion of the lower side sheet material to the work scaffold, and the cover piece of the lower side sheet material and the upper side sheet material to be firmly joined by linear fasteners over a wide overlapping area. This effectively and easily achieves the covering of the attachment portion of the side sheet material with the cover piece and the detachable joining of adjacent side sheet materials via the cover piece. Furthermore, because the cover piece and side sheet material are pulled inward and joined as described above, the joining work can be performed inside the protective section. [Effects of the Invention]

[0037] Because the present invention has the above-described configuration, the curing sheet products of (1) and (2) above enable easy attachment of the curing sheet to structural members without gaps. The curing sheet product of (3) above can further improve the adhesion of the curing sheet to structural members, and the curing sheet product of (4) above can ensure sufficient airtightness. The curing sheet product of (5) above can relatively easily realize a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, and the curing sheet product of (6) above can prevent gaps from forming between the structural members and the curing sheet. Furthermore, the curing sheet product of (7) above can easily create an airtight curing compartment in a structure having columnar or cylindrical structural members. Meanwhile, the curing compartment of (8) above and the method for constructing a curing compartment of (12) above can easily accommodate work in rainy weather and internal welding work, and can create a curing compartment with excellent airtightness and windproof properties. Furthermore, the curing compartments of the above items (9) and (10) and the construction methods of the curing compartments of the above items (13) and (14) can ensure airtightness and facilitate the work of connecting and disconnecting the side sheet materials in the vertical direction. Furthermore, the curing compartment of the above item (11) can ensure airtightness even when another long structural member is present. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a perspective view showing an example of the configuration of a curing section according to an embodiment of the present invention, together with a structure on which the curing section is to be installed. FIG. [Figure 2] 2A and 2B are perspective views showing examples of combinations of protective sheets that make up the protective section of FIG. 1, shown from different angles. [Figure 3] 2 is an image diagram showing an example of a protective sheet product according to an embodiment of the present invention, which is used as part of the protective sheet in the protective section of FIG. 1, where (a) is the outer side facing the outside of the protective section, and (b) is the inner side facing the inside of the protective section. [Figure 4]1A and 1B are conceptual diagrams showing another example of a protective sheet product according to an embodiment of the present invention, which is used as part of the protective sheet in the protective section of FIG. 1, where (a) is the outer surface facing the outside of the protective section, and (b) is the inner surface facing the inside of the protective section. [Figure 5] 1. FIG. 1 is an image diagram showing another example of a protective sheet product according to an embodiment of the present invention, which is used as part of the protective sheet in the protective section of FIG. 1, where (a) is the outer side facing the outside of the protective section, and (b) is the inner side facing the inside of the protective section. [Figure 6] 1. FIG. 1 is an image diagram showing another example of a protective sheet product according to an embodiment of the present invention, which is used as part of the protective sheet in the protective section of FIG. 1, where (a) is the outer side facing the outside of the protective section, and (b) is the inner side facing the inside of the protective section. [Figure 7] FIG. 1 is a perspective image diagram showing an example of a tubular member used in a protective sheet product. [Figure 8] FIG. 10 is a cross-sectional image diagram illustrating a method of attaching a tubular member to a protective sheet product. [Figure 9] FIG. 10 is a side view showing an example of a length adjusting member that connects the ends of tubular members. [Figure 10] FIG. 10 is a perspective image diagram showing a state in which a tubular member is attached to a protective sheet product. [Figure 11] FIG. 10 is an image diagram showing an example of a slit joining means for closing slits in a protective sheet product. [Figure 12] FIG. 10 is a side view illustrating the installation angle of the tubular member relative to the structural member. [Figure 13] This is an image diagram showing the installation procedure for installing the protective sheet product of Figure 3 on a structure when constructing the protective section of Figure 1, and is shown in chronological order from (a) to (c). [Figure 14] 13A and 13B are conceptual diagrams showing the installation procedure for installing the protective sheet product of FIG. 3, shown in chronological order of (a) and (b). [Figure 15]14A and 14B are conceptual diagrams showing the installation procedure for installing the protective sheet product of FIG. 3, shown in chronological order of (a) and (b). [Figure 16] FIG. 2 is an image diagram illustrating a method for connecting protective sheet products disposed above and below each other, as an example of a method for connecting protective sheets used in the protective section of FIG. 1. [Figure 17] FIG. 2 is a side view illustrating a method for connecting sheet materials disposed above and below each other, as another example of a method for connecting protective sheets used in the protective section of FIG. 1. [Figure 18] FIG. 10 is a perspective image diagram showing an example of the configuration of a sheet material to be installed in a portion where a structural member other than the structural member on which the protective sheet product is installed penetrates. DETAILED DESCRIPTION OF THE INVENTION

[0039] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals. Fig. 1 shows an example of the configuration of a curing section 50 according to an embodiment of the present invention, in which the curing section 50 formed of a curing sheet 52 (see Fig. 2) is installed around a portion of an elevated portion of an outdoor structure 82. The structure 82 shown in Fig. 1 has a plurality of long, cylindrical structural members 86 (steel pipes), and in the embodiment of Fig. 1, the curing section 50 is installed in order to perform welding work, painting work, and the like on these structural members 86.

[0040] The curing section 50 in FIG. 1 is installed near the junction of two cylindrical structural members 86, one extending horizontally and the other extending diagonally, so that the two structural members 86 extend through the curing section 50. Above the horizontally extending structural member 86, a passage 84 is provided for workers 92 (see FIG. 17 ) and others to pass through. The curing section 50 is constructed based on a work scaffolding 90 installed around a portion of the structural member 86 of the structure 82, and the scaffolding is covered with a curing sheet 52. The work scaffolding 90 is installed so that the worker 92 can move from the passage 84 of the structural member 86 to various positions within the curing section 50. The work scaffolding 90 here includes not only the plate-like or step-like members that the worker 92 actually uses as scaffolding, but also the steel pipes, steel frames, and other members used to install the members. In FIG. 1, the steel frame used to construct the work scaffolding 90 as a unit is designated by the reference numeral 90.

[0041] Figure 2 shows how a protective sheet 52 used to construct the protective compartment 50 shown in Figure 1 is formed by combining a plurality of protective sheet products 10 according to an embodiment of the present invention and a plurality of sheet materials 54. Note that Figure 2 does not show the work scaffolding 90 that forms the base of the protective compartment 50, and the dashed dotted lines in Figure 2 represent two structural members 86 that extend through the protective compartment 50. The protective sheet 52 in Figure 2 roughly includes a plurality of sheet materials 54 used in the roof portion, a plurality of protective sheet products 10 (shown by hatching) and a plurality of sheet materials 54 used in the four side portions, and a plurality of sheet materials 54 used in the bottom portion.

[0042] More specifically, six sheet materials 54 are used on the roof portion, and six sheet materials 54 are also used on the bottom portion. Of the four side portions, two protective sheet products 10 (10A, 10B) and four sheet materials 54 are used on the left side as seen in FIG. 2(a), and ten sheet materials 54 are used on the right side as seen in FIG. 2(a). Of the four side portions, two protective sheet products 10 (10C, 10D) and four sheet materials 54 are used on the left side as seen in FIG. 2(b), and ten sheet materials 54 are used on the right side as seen in FIG. 2(b). Furthermore, of the four side portions, the left side as seen in FIG. 2(b) has a step inward at the bottom, and as shown in FIG. 2(a), two sheet materials 54 are also used on the bottom of the step. As will be described in more detail later, both the protective sheet product 10 and the sheet material 54 have a laminated structure including a fire-resistant and heat-resistant layer 14 and an airtight layer 16 (see Figures 3 to 6, 8, 17, etc.), and are installed so that the fire-resistant and heat-resistant layer 14 side is on the inside of the protective section 50.

[0043] 3 to 6 show each of the four protective sheet products 10A to 10D shown in FIG. 2. As can be seen in FIGS. 1 and 2, these protective sheet products 10A to 10D are installed in the penetration portions of the structural members 86 that extend through the protective compartment 50. First, referring to FIG. 3, the protective sheet product 10A according to an embodiment of the present invention includes a protective sheet 12 that is generally rectangular in front view and a tubular member 36. The protective sheet 12 has a laminated structure including a fire-resistant and heat-resistant layer 14 and an airtight layer 16. The laminated structure of this embodiment is formed by laminating a rubber-coated layer 16A onto a fire-resistant and heat-resistant fiber base material 14A. For example, the protective sheet 12 is formed by laminating a rubber-coated layer 16A, such as CSM rubber, onto a fire-resistant and heat-resistant fiber base material 14A, such as glass fiber. Any fiber base material that can withstand welding work and the like may be used for the fiber base material 14A, and any rubber may be used for the rubberized layer 16A within a range that satisfies the requirements of adhesion to the tubular member 36, which will be described later, as well as airtightness and weather resistance. As shown in Figure 3(a), the airtight layer 16 side of the protective sheet product 10A is used as the outer surface facing the outside of the protective compartment 50, and as shown in Figure 3(b), the fire and heat resistant layer 14 side of the protective sheet product 10A is used as the inner surface facing the inside of the protective compartment 50.

[0044] The protective sheet 12 in Fig. 3 has an insertion hole 18, a slit 20, and a recess 26. The insertion hole 18 is a portion through which a structural member 86 is inserted when the protective sheet product 10A is installed in the protective section 50, and the cylindrical structural member 86 extending horizontally as shown in Fig. 1 is inserted into the insertion hole 18 of the protective sheet product 10A in Fig. 3. For this reason, the insertion hole 18 is formed in a roughly circular shape near the center of the protective sheet 12 when viewed from the front. The slit 20, which will be described in detail later, is a portion used as a passageway for the structural member 86 to be placed in the insertion hole 18, and is formed by cutting diagonally from the periphery of the insertion hole 18 to the edge of the protective sheet 12. Note that the slit 20 in Fig. 3 is shown in a state closed by a slit joining means 28. 1 is provided above a horizontally extending structural member 86, and is located where a passage 84 such as that shown in Fig. 1 will be placed when the protective sheet product 10A is installed in the protective section 50. For this reason, the recess 26 is formed in a roughly rectangular shape near the center of the upper end of the protective sheet 12 in the lateral direction.

[0045] The protective sheet 12 in FIG. 3 has a joint 22 at its upper end, excluding the recess 26, and is further provided with multiple fastening means 24, such as ropes and hooks. The joint 22 is used to connect the protective sheet product 10A to the roofing sheet material 54 shown in FIG. 2, which is located above the protective sheet product 10A when the protective sheet product is installed in the protective section 50. For example, a hook-and-loop fastener or wire fastener may be used for the joint 22. The joint 22 may be a sheet made of the same material as the protective sheet 12, and is attached by sewing or other means to the outer surface of the protective sheet product 10A shown in FIG. 3(a) along the upper edge of the protective sheet 12. The multiple fastening means 24 are used to suspend the protective sheet product 10A from the work scaffolding 90 when the protective sheet product 10A is installed. The multiple fixing means 24 are attached via grommets or the like at intervals along the upper edge of the protective sheet 12, above the attachment portion of the joint 22 to the protective sheet 12. Note that hook-and-loop fasteners, wire fasteners, or the like are also provided on edges of the protective sheet product 10A other than the upper edge, which will be adjacent to other protective sheet products 10 or sheet materials 54, for joining to those adjacent sheets.

[0046] The tubular member 36 is attached to the outer surface of the protective sheet product 10A shown in FIG. 3(a) along the periphery of the insertion hole 18. FIG. 7 shows a tubular member 36 used in the protective sheet product 10A shown in FIG. 3 alone. This tubular member 36 is designed to expand when internal pressure is applied, and is shown in an expanded state in FIG. 7. In the expanded state shown in FIG. 7, the tubular member 36 has a roughly annular shape in a plan view and a circular cross section in the extension direction (see FIG. 8). As shown, the tubular member 36 has a divided portion 38 in a portion of the extension direction, so that opposing ends 36a, 36b across the divided portion 38 are separated. Such a tubular member 36 may be, for example, a rubber tube, and expands when air or the like is supplied to the inside of the tubular member 36.

[0047] In this embodiment, when the tubular member 36 is expanded as shown in FIG. 7, the ends 36a, 36b are curved, and hook-and-loop fasteners 39 are attached to the curved ends 36a, 36b. Therefore, the ends 36a, 36b of the tubular member 36 can be joined together and are joined as needed. It has been confirmed that if the ends 36a, 36b of the tubular member 36 are flat, the ends 36a, 36b are less likely to join together when the tubular member 36 expands, making it difficult for the tubular member 36 to assume a circular shape. Near each of the ends 36a, 36b of the tubular member 36, hook-and-loop fasteners 44 for attaching a length adjustment member 42 (see FIGS. 9 and 10), which will be described later, are attached around the entire circumference of the cross section of the tubular member 36 in the extension direction.

[0048] Next, Fig. 8 shows how a tubular member 36 is attached to the protective sheet 12 of the protective sheet product 10, and Fig. 8 illustrates a cross section of the tubular member 36 in its extension direction. The right side of Fig. 8 corresponds to the inner circumferential side (center side) of the annular tubular member 36 in a planar view, and the left side of Fig. 8 corresponds to the outer circumferential side of the annular tubular member 36 in a planar view. As shown, the tubular member 36 is placed on the airtight layer 16 (rubberized layer 16A) side of the protective sheet 12, and is adhered to the outer circumferential side of the contact position with the protective sheet 12 via an adhesive V-tape 40 bent into a V shape. This V-tape 40 is arranged on the outer circumferential side of the tubular member 36 in the extension direction, and is bent into a V shape to increase the contact area between the protective sheet 12 and the tubular member 36, thereby improving adhesive strength. In addition to the outer circumferential side of the tubular member 36, the inner circumferential side of the tubular member 36 may also be adhered to the protective sheet 12 via a V-tape 40 or the like.

[0049] Furthermore, in this embodiment, the portion of the protective sheet 12 located on the inner periphery of the tubular member 36 in Fig. 8 is lifted upward in Fig. 8 and wrapped around the tubular member 36. That is, the portion to the right of the right end of the cross-sectional portion of the protective sheet 12 shown in Fig. 8 is cut out in a roughly circular shape in plan view in order to form an insertion hole 18 in the protective sheet 12. Fig. 10 (described later) shows the protective sheet 12 wrapped around the inner periphery of the tubular member 36, and multiple slits 27 are formed at intervals in the wrapped portion of the protective sheet 12 along the extension direction of the tubular member 36 to accommodate changes in the size of the tubular member 36, which expands in diameter toward the outer periphery. These slits 27 are formed on the right end side of the cross-sectional portion of the protective sheet 12 in Fig. 8.

[0050] Next, Figure 9 shows a length adjustment member 42 for connecting the opposing ends 36a, 36b of the tubular member 36 across the divided portion 38 when the inside of the member is pressurized and expanded. The length adjustment member 42 connects the ends 36a, 36b so that the distance between them can be adjusted. The length adjustment member 42 is generally cylindrical and has multiple slits 46 on one side (the left side in Figure 9) so that the one side can be opened into multiple sections. The inner surface of the length adjustment member 42 is provided with a hook-and-loop fastener material that bonds to the hook-and-loop fasteners 44 that are pre-attached to the ends 36a, 36b of the tubular member 36. Therefore, the length adjustment member 42 connects the ends 36a, 36b of the tubular member 36 in a manner that allows it to be attached to the ends 36a, 36b via the hook-and-loop fasteners 44. At this time, the length adjustment member 42 adjusts the distance between the ends 36a, 36b within a range that reaches the hook-and-loop fasteners 44 on both ends 36a, 36b of the tubular member 36. A method for connecting the ends 36a, 36b of the tubular member 36 using this length adjustment member 42 will be described later. Note that the hook-and-loop fasteners 39 attached to the ends 36a, 36b of the tubular member 36 are not shown in Figure 9.

[0051] 10 shows a state in which a tubular member 36 is attached to a protective sheet 12, and ends 36a, 36b of the tubular member 36 are connected by a length adjustment member 42. As described above, the protective sheet 12 and the tubular member 36 are adhered via a V-tape 40 or the like, and a portion of the protective sheet 12 is wrapped around the inner periphery of the tubular member 36. As a result, a circular insertion hole 18 is formed in the protective sheet 12 at a position corresponding to the inner edge of the tubular member 36 in a plan view; in other words, the tubular member 36 is attached along the periphery of the insertion hole 18.

[0052] Furthermore, the tubular member 36 is attached with the divided portion 38, which is covered by the length adjustment member 42 in FIG. 10, aligned with the slit 20 provided in the protective sheet 12, as also shown in FIG. 3(a). This is because, as will be described later, the slit 20 and the divided portion 38 are used as a passage for passing the structural member 86, which will be inserted into the insertion hole 18 and the inner periphery of the tubular member 36, up to the insertion position. Note that although the length adjustment member 42 is not shown in FIG. 3(a), if adjustment of the distance between the ends 36a, 36b of the tubular member 36 is not required, the ends 36a, 36b may be directly connected via a hook-and-loop fastener 39 as shown in FIG. 7.

[0053] Figure 11 shows in detail the slit joining means 28 shown in Figure 3(b) for closing the slit 20 in the protective sheet 12, with an insertion hole 18 formed on the upper side in Figure 11. The slit joining means 28 of this embodiment includes a string 30 and a hook-and-loop fastener 32, and the string 30 is threaded through holes provided on both sides of the slit 20 in the protective sheet 12 and tied to close the slit 20. The hook-and-loop fasteners 32 are attached to both sides of the slit 20 in the protective sheet 12 along the extension direction of the slit 20, and the hook-and-loop fasteners 32 on both sides of the slit 20 are joined together to close the slit 20. Figure 3(b) shows the slit 20 closed by the slit joining means 28.

[0054] Next, referring to Fig. 4, a protective sheet product 10B according to an embodiment of the present invention includes a protective sheet 12 and a tubular member 36, similar to the protective sheet product 10A of Fig. 3, but the shape of the protective sheet 12 is significantly different from that of the protective sheet product 10A. That is, the protective sheet 12 of the protective sheet product 10B is roughly composed of five protective sheets 12A to 12E, which are combined three-dimensionally by, for example, folding or sewing. This is because a structural member 86 extending obliquely rather than horizontally penetrates the protective sheet product 10B that constitutes the protective sheet 52 on the side, and the tubular member 36 is installed relative to the obliquely extending structural member 86, as shown in Fig. 12.

[0055] More specifically, Figure 12 shows the positional relationship between the tubular member 36 expanded by internal pressure and the structural member 86 inserted therein, as viewed from the side perpendicular to the central axis 86a of the structural member 86, which is parallel to the extension direction of the structural member 86. As shown in the figure, the tubular member 36 attached to the protective sheet 12, which appears to be substantially linear in the side view shown in Figure 12, is installed perpendicular to the central axis 86a (extension direction) of the structural member 86, which extends diagonally. Here, "perpendicular" includes some error due to the situation, components, etc. that may occur when the worker 92 installs the tubular member 36 so that the tubular member 36 located on the outer periphery of the penetration portion of the structural member 86 is perpendicular to the central axis 86a of the structural member 86. For this reason, the protective sheet 12 to which the tubular member 36 is attached needs to be installed so that it extends diagonally rather than vertically. Furthermore, consideration must be given to the connection with the other sheet materials 54 that make up the protective sheet 52. Therefore, the protective sheet product 10B shown in Fig. 4 has a three-dimensional structure. Note that the configuration in which the tubular members 36 are installed so as to be perpendicular to the extension direction of the structural members 86 applies not only to structural members 86 that extend diagonally, but also to structural members 86 that extend horizontally.

[0056] Returning to FIG. 4, of the five protective sheets 12A-12E, protective sheet 12B corresponds to protective sheet 12 shown in FIG. 12 and is positioned at an angle, to which a tubular member 36 is attached. For this purpose, protective sheet 12B has insertion holes 18 formed therein, and slits 20 extending from the insertion holes 18 are also formed therein. These slits 20 are provided continuously from protective sheet 12B to protective sheet 12C, reaching the edge of protective sheet 12C. Each of protective sheets 12A-12E, like protective sheet 12 shown in FIG. 3, has a laminated structure including a fire-resistant and heat-resistant layer 14 (fiber substrate 14A) and an airtight layer 16 (rubberized layer 16A), with the airtight layer 16 side serving as the outer surface and the fire-resistant and heat-resistant layer 14 side serving as the inner surface. Furthermore, multiple fastening means 24 attached to protective sheets 12A and 12D are used to fasten them to a work scaffolding 90. Other configurations of the protective sheet product 10B are similar to the corresponding parts of the protective sheet product 10A described with reference to Figs. 3 and 7 to 11, and therefore detailed description thereof will be omitted here.

[0057] Furthermore, referring to Figure 5, the protective sheet product 10C according to the embodiment of the present invention, like the protective sheet product 10A shown in Figure 3, is penetrated by a horizontally extending structural member 86 and is installed on the side opposite to the protective sheet product 10A. Therefore, the protective sheet product 10C has a similar configuration to the protective sheet product 10A. The protective sheet product 10C differs from the protective sheet product 10A in that the slits 20 extend downward and that multiple fastening means 24 for fastening to a work scaffolding 90 are also attached to the sides of the inner surface. The other configurations of the protective sheet product 10C are similar to the corresponding parts of the protective sheet product 10A, so a detailed description will be omitted here.

[0058] 6, a protective sheet product 10D according to an embodiment of the present invention is penetrated by a diagonally extending structural member 86, similar to the protective sheet product 10B shown in FIG. 4, and is installed on the side opposite the protective sheet product 10B. Therefore, the protective sheet 12 of the protective sheet product 10D is roughly composed of five protective sheets 12F-12J, which are three-dimensionally combined by, for example, folding or sewing. The protective sheet 12G, to which the tubular member 36 is attached, is installed so as to extend diagonally, and insertion holes 18 and slits 20 are formed in this protective sheet 12G. Furthermore, the slits 20 are formed continuously from the protective sheet 12G to the protective sheet 12H, reaching the edge of the protective sheet 12H. The joint 22 attached along the upper edge of the protective sheet 12F is used for joining two sheets 54 to the bottom of the step provided on the side portion where the protective sheet product 10D is used, as shown in Figure 2. The other configurations of the protective sheet product 10D are the same as the corresponding portions of the protective sheet products 10A and 10B, so a detailed description will be omitted here.

[0059] Next, a procedure for installing the protective sheet product 10 according to the embodiment of the present invention as described above on a structure 82 or a structural member 86 to construct a protective section 50 as shown in FIG. 1 will be described. Using the protective sheet product 10A shown in FIG. 3 as an example, the procedure for installing the protective sheet product 10A will be described with reference to FIGS. 13 to 15. Note that FIG. 13 is a view from the outside of the protective section 50, and FIGS. 14 and 15 are views from the inside of the protective section 50. First, as shown in FIG. 13(a), the slit 20 is opened without using the slit joining means 28. Furthermore, air or the like is released from the tubular member 36 to make it slack, and the divided portion 38 of the tubular member 36 is also separated. The protective sheet product 10A is then rolled from the bottom into a cylindrical shape, passing through the state shown in FIG. 13(b), and the entire product is rolled into a cylindrical shape as shown in the right diagram of FIG. 13(c). Furthermore, the rolled-up protective sheet product 10A is inserted between a horizontally extending structural member 86 and the passage 84 provided above it. At this time, the necessary work scaffolding 90 is set up in advance on the passage 84 and the structural member 86.

[0060] Then, as shown in FIG. 14(a), the upper end of the rolled-up protective sheet product 10A, to which the fastening means 24 is attached, is pulled out, and as shown in FIG. 14(b), the upper end of the protective sheet product 10A is fixed to the work scaffolding 90 using the fastening means 24. As a result, the protective sheet product 10A is suspended from the work scaffolding 90 to which it is fixed. The rolled-up protective sheet product 10A is further lowered until it reaches the top of the structural member 86. The structural member 86 is then inserted through the pre-opened slit 20 and the divided portion 38 of the tubular member 36, and positioned on the inner periphery of the insertion hole 18 and the tubular member 36. Then, as shown in FIG. 15(a), the protective sheet product 10A is lowered to the bottom, and air or the like is supplied to the tubular member 36 to inflate it. At this time, as explained with reference to Figure 12, the tubular member 36 is adjusted so that it is perpendicular to the extension direction of the structural member 86 when viewed from the side perpendicular to the extension direction of the structural member 86, and the tubular member 36 is brought into close contact with the outer periphery of the structural member 86.

[0061] Then, the ends 36a, 36b of the tubular member 36 are connected using a length adjustment member 42 (see FIGS. 9 and 10) or a hook-and-loop fastener 39 (see FIG. 7) provided on the ends 36a, 36b facing each other across the divided portion 38 of the tubular member 36. When using the length adjustment member 42, referring to FIG. 9, the other side of the length adjustment member 42 without the slit 46 is placed over the end 36b of the tubular member 36 and joined via the hook-and-loop fastener 44. This operation may be performed in advance, for example, before the interior of the tubular member 36 is pressurized and expanded. Then, the end of the length adjustment member 42 with the slit 46 is opened, and the end 36a of the tubular member 36 is placed over the end 36a of the tubular member 36 while adjusting the distance between the ends 36a, 36b of the tubular member 36. Then, one side of the length adjustment member 42 is closed and joined to the end 36a of the tubular member 36 via the hook-and-loop fastener 44.

[0062] Furthermore, the slit 20 is closed as shown in FIG. 15(b) using the slit joining means 28 described with reference to FIG. 11. The installation of the protective sheet product 10A is completed through these steps. Thereafter, if necessary, the protective sheet product 10A is joined to another protective sheet product 10 or sheet material 54 adjacent to the protective sheet product 10A in the vertical or horizontal direction using hook-and-loop fasteners or wire fasteners provided on the edge of each sheet. For example, FIG. 16 shows an example of joining vertically adjacent protective sheet products 10A and 10B. In the embodiment of FIG. 16, the protective sheet products 10A and 10B are joined at the locations indicated by symbols A to C.

[0063] That is, the protective sheet product 10A has hook-and-loop fasteners on the left and right edges of the protective sheet 12, including the locations indicated by the symbols A and B, and a linear fastener on the bottom edge indicated by the symbol C. Correspondingly, the protective sheet product 10B has hook-and-loop fasteners on the protective sheet 12E at the location indicated by the symbol A and the protective sheet 12D at the location indicated by the symbol B, and a linear fastener on the protective sheet 12A at the location indicated by the symbol C. These fasteners are therefore used to join the protective sheet products 10A and 10B together. Although the protective sheet products 10B to 10D differ in detailed configuration from the protective sheet product 10A, the basic installation method is the same as that of the protective sheet product 10A, and therefore a description thereof will be omitted here.

[0064] Next, Fig. 17 shows the state in which, of the multiple sheet materials 54 shown in Fig. 2, sheet materials 54 used for the side portions of the curing compartment 50 are installed; here, for convenience of explanation, such sheet materials 54 will be referred to as side sheet materials 56. Each of the multiple sheet materials 54, including these side sheet materials 56, has a laminated structure including a fire-resistant and heat-resistant layer 14 and an airtight layer 16, similar to the curing sheet 12 that constitutes the curing sheet product 10. Also in this respect, similar to the curing sheet 12, each of the multiple sheet materials 54 is installed so that the fire-resistant and heat-resistant layer 14 side is on the inside of the curing compartment 50 and the airtight layer 16 side is on the outside of the curing compartment 50. In Fig. 17, the left side where the worker 92 is located corresponds to the inside of the curing compartment 50, and the right side corresponds to the outside of the curing compartment 50.

[0065] FIG. 17 illustrates three vertically adjacent side sheet materials 56, each of which is hung and fixed to the work scaffolding 90 via a hook-shaped fastening means 24 attached to its upper end. A sheet-like cover piece 70 is attached to the upper edge of each side sheet material 56 along the direction of extension of the upper edge (a direction perpendicular to the plane of the paper in FIG. 17 ). The cover piece 70 is formed, for example, from the same material as the sheet material 54, and is attached to the side sheet material 56 by an appropriate means suited to the material forming the cover piece 70 and the side sheet material 56. In the embodiment of FIG. 17 , as shown enlarged in a speech bubble on the right side of FIG. 17 , the lower end of the cover piece 70 is sewn to the side sheet material 56 at a seam 72 immediately below the attachment position of the fastening means 24, along a direction perpendicular to the plane of the paper in FIG. 17 . The upper end of the cover piece 70 is retracted inside the protective section 50 so as to cover the attachment portion of the side sheet material 56 to the work scaffolding 90 via the fixing means 24.

[0066] Furthermore, each cover piece 70 is joined to the side sheet material 56 located above it in a direction perpendicular to the plane of the paper in FIG. 17. Specifically, of the three side sheet materials 56 shown in FIG. 17, the topmost side sheet material 56 is joined to the cover piece 70 attached to the second-highest side sheet material 56, and the second-highest side sheet material 56 is joined to the cover piece 70 attached to the third-highest side sheet material 56. That is, when vertically adjacent side sheet materials 56 are connected to each other, the vicinity of the upper end of the cover piece 70 attached to the lower side sheet material 56 is joined to the vicinity of the lower end of the upper side sheet material 56. More specifically, as shown in an enlarged view in a speech bubble on the left side of FIG. 17, the outer surface 70a near the upper end of the cover piece 70 and the outer surface 56a near the lower end of the side sheet material 56 are overlapped in an opposing manner, pulled into the inside of the protection section 50, and detachably joined by a line fastener 74.

[0067] 17 has been described regarding the joining of vertically adjacent side sheet materials 56, but side sheet materials 56 adjacent in the left-right direction, and side sheet materials 56 constituting side portions in two directions that are perpendicular to each other in a plan view, can also be joined by an appropriate joining means such as hook-and-loop fasteners or wire fasteners. The same applies not only to the side portions of the protective compartment 50 in which the side sheet materials 56 are used, but also to the sheet materials 54 used in the roof and bottom portions. In other words, all sheets constituting the protective sheet 52 as shown in FIG. 2, including the protective sheet product 10 and sheet materials 54 (side sheet materials 56), are each detachably joined to all other adjacent sheets by some kind of joining means.

[0068] Next, referring to Figure 18, there is shown an example of how to deal with the case where the structure 82 or the work scaffolding 90 has, in addition to the structural member 86 shown in Figure 1, another long structural member 88 that extends across the inside and outside of the curing section 50. The other structural member 88 shown in Figure 18 has a much smaller cross-sectional area than the structural member 86 in Figure 1, and is, for example, an H-beam including a reinforcing member. In the area where such another structural member 88 is to be installed, a cut-out sheet material 58, which is a sheet material 54 with a cut 60, is used as the curing sheet 52, and Figure 18 shows the state in which the other structural member 88 penetrates the cut-out sheet material 58 from a perspective from inside the curing section 50.

[0069] The incisions 60 in the incised sheet material 58 include an insertion portion 62 and a through portion 64, and the insertion portion 62 is cut to a shape that matches the cross-sectional shape of the penetration portion of the other structural member 88. Therefore, if the other structural member 88 is an H-shaped steel beam including a reinforcing member, the insertion portion 62 is formed in a shape that resembles an H-shape with the straight line of the reinforcing member added. In contrast, the through portion 64, like the slits 20 in the protective sheet product 10, is used as a passageway until the other structural member 88 is placed in the insertion portion 62, and is formed by cutting from any position in the insertion portion 62 to the edge of the incised sheet material 58. The incisions 60 as described above may be formed at the work site to match the shape of the other structural member 88.

[0070] The incised sheet material 58 is also provided with incision joining means 66, which are used to close each end of the insertion portion 62 and the through-portion 64 when another structural member 88 is inserted into the insertion portion 62 as shown in FIG. 18 . The incision joining means 66 may be configured, for example, by attaching fin pieces along the incision 60 on both sides thereof and joining the fin pieces together with a hook-and-loop fastener or the like. In this case, the incision joining means 66 may be provided over the entire incision 60, including the insertion portion 62 and the through-portion 64. Alternatively, the incision joining means 66 may be configured to close only the areas to be closed, including each end of the insertion portion 62 and the entire through-portion 64, with an adhesive tape or the like. Note that the through-portion 64 of the incision 60 in FIG. 18 is shown entirely closed by the incision joining means 66.

[0071] Here, we will briefly explain various functions that can be employed in the protection section 50 according to the embodiment of the present invention, as well as the equipment and materials required to realize these functions. These functions are intended to deal with welding fumes (toxic substances) generated during welding work, deal with volatile organic solvents generated during painting work, ensure painting quality, and improve workability and the working environment. First, it is preferable that the protective section 50 have a ventilation function within the section while maintaining a sealing function provided by the protective sheet 52. For this reason, for example, an openable / closable window 76 is provided in the sheet material 54 constituting the protective sheet 52, as shown in FIG. 1. Although not shown, this window 76 is opened by rolling up the sheet portion covering the window 76; for example, the sheet portion covering the window 76 is rolled up and secured with a belt or the like. Furthermore, when the sheet portion covering the window 76 is lowered, the side and lower edges of the sheet portion can be opened and closed by fasteners 78. Such windows 76 can be seen in FIG. 1, and by opening the windows 76 of each sheet material 54 as needed, a passage for airflow is ensured.

[0072] Furthermore, multiple fans may be installed in the curing compartment 50 to provide forced ventilation throughout the entire area. The airflow may create a negative pressure within the curing compartment 50, preventing fumes from spreading and allowing fresh air in. A dust collector, such as a fume collector, may also be installed for local exhaust during welding work. A portable air conditioner may be installed to regulate the temperature and humidity within the curing compartment 50. In this case, a vinyl air duct may be used to branch the air from the air conditioner and adjust the air speed and distribution. For lighting purposes, a translucent material, such as tarpaulin, may be used for part of the sheet material 54 that constitutes the roof, and lighting equipment may be installed, particularly in the area below the curing compartment 50. In addition, explosion-proof equipment, such as the fans and lighting, may be used to accommodate welding and painting work.

[0073] The protective sheet product 10 and protective compartment 50 according to the embodiment of the present invention are not limited to the configurations shown in FIGS. 1 to 18 and may take various forms depending on the work site where the protective compartment 50 is to be constructed. For example, the protective sheet product 10 is not limited to being installed on a cylindrical or columnar structural member 86, but may be installed on structural members 86 of various shapes. In either case, the insertion holes 18 and tubular members 36 are formed to match the shapes of the penetration portions of the structural members 86. Therefore, the protective compartment 50 is not limited to being constructed on a structure 82 having a cylindrical or columnar structural member 86, but may be applied to various structures 82. Furthermore, the layered structure including the fire-resistant and heat-resistant layer 14 and the airtight layer 16 of the protective sheet 12 and sheet material 54 of the protective sheet product 10 may be realized using materials other than the fiber substrate 14A and rubberized layer 16A. Furthermore, although the tubular member 36 preferably has one separation portion 38, it may have two or more separation portions depending on the situation. In addition, the joints 22 of the protective sheet products 10 shown in FIGS. 3, 5, 6, etc. may be similar to the cover pieces 70 shown in FIG.

[0074] The embodiment of the present invention having the above-described configuration can achieve the following effects. Specifically, the protective sheet product 10 according to the embodiment of the present invention is used in a protective section 50 surrounding a portion of a long structural member 86 of a structure 82, as shown in FIG. 1 . As shown in FIGS. 3 to 6 , the protective sheet product 10 includes a protective sheet 12, an insertion hole 18, a slit 20, and a tubular member 36. The protective sheet 12 has a laminated structure including a fire-resistant and heat-resistant layer 14 and an airtight layer 16, and is installed so that the fire-resistant and heat-resistant layer 14 is on the inside of the protective section 50. Furthermore, the protective sheet 12 is formed with an insertion hole 18 and a slit 20. The insertion hole 18 is a portion through which the long structural member 86 is inserted and is formed to fit the shape and size of the structural member 86. The slit 20 is formed to extend from the periphery of the insertion hole 18 to the edge of the protective sheet 12, and is used as a portion through which the structural member 86 passes when the protective sheet product 10 is installed.

[0075] Furthermore, the tubular member 36 expands when pressurized internally, and as shown in Figure 7, has a divided portion 38 along a portion of its extension, forming a roughly annular shape interrupted by the divided portion 38. Similar to the insertion hole 18, the tubular member 36 is formed to fit the shape and size of the structural member 86, and is attached around the insertion hole 18 with the divided portion 38 aligned with the slit 20 (see Figure 10). Therefore, when the protective sheet product 10 is installed as described above, the structural member 86 is passed through the slit 20 and the divided portion 38 of the tubular member 36, and is positioned on the inner circumferential side of the insertion hole 18 and the tubular member 36.

[0076] With this configuration, when a structural member 86 is placed inside the tubular member 36 and pressure is applied to the tubular member 36, the protective sheet product 10 according to the embodiment of the present invention can tightly fit the tubular member 36 to the outer periphery of the penetration portion of the structural member 86 (see FIG. 15 ). In other words, the tubular member 36, which is formed to match the shape and size of the structural member 86, can use its expansion performance to adhere to the structural member 86, allowing it to adhere to structural members 86 of various shapes. Moreover, installation is easy because the structural member 86 can be inserted through the insertion hole 18 and the tubular member 36 and the interior of the tubular member 36 is pressurized. Therefore, by constructing a protective compartment 50 using the protective sheet product 10, even if a structural member 86 exists in a structure 82 that straddles the inside and outside of the protective compartment 50, a highly airtight protective compartment 50 can be easily constructed without forming gaps around the outer periphery of the penetration portion of the structural member 86. Furthermore, by placing the fire-resistant and heat-resistant layer 14 side of the protective sheet product 10 inside the protective section 50, damage to the protective sheet product 10 can be prevented even if welding work or the like is performed within the protective section 50, and furthermore, the airtight layer 16 can ensure airtightness and also provide sufficient wind protection function.

[0077] 9 and 10, the protective sheet product 10 according to the embodiment of the present invention further includes a length adjustment member 42 connecting the ends 36a, 36b of the tubular member 36. Specifically, the generally annular tubular member 36 having a segment 38 has ends 36a, 36b that face each other across the segment 38. The length adjustment member 42 connects the ends 36a, 36b of the tubular member 36 in an adjustable manner, allowing the distance between the ends 36a, 36b to be adjusted when the structural member 86 is inserted through the insertion hole 18, i.e., when the structural member 86 is inserted inside the tubular member 36 and the interior of the tubular member 36 is pressurized. This allows for a stable connection between the ends 36a, 36b of the tubular member 36 while flexibly adjusting the distance between the ends 36a, 36b of the tubular member 36 in accordance with the circumferential length of the structural member 86's penetration portion. This makes it possible to further improve the adhesion of the tubular member 36 to the structural member 86, and ultimately the adhesion of the protective sheet product 10 to the structural member 86.

[0078] 10, the protective sheet 12 used in the protective sheet product 10 can be wrapped around the tubular member 36 from the inner periphery of the tubular member 36, with the fire- and heat-resistant layer 14 of the protective sheet 12 facing outward. This protects the tubular member 36, made of rubber or the like, from sparks that may occur during welding work performed in the protective section 50. Furthermore, it can also protect the tubular member 36 from direct contact with structural members 86, which are expected to become very hot during such welding work.

[0079] 3 to 6 and 11, in the protective sheet product 10 according to the embodiment of the present invention, the slits 20, which are used as passages until the structural member 86 is placed in the insertion hole 18, are closed by the slit joining means 28 after the structural member 86 has been inserted through the insertion hole 18 and into the inner periphery of the tubular member 36. This ensures sufficient airtightness in the protective section 50 in which the protective sheet product 10 is used, without impairing the airtightness due to the slits 20 in the protective sheet product 10. 3 to 6 and 8, the protective sheet product 10 according to the embodiment of the present invention has a laminated structure including the fire-resistant and heat-resistant layer 14 and airtight layer 16 of the protective sheet 12, in which a rubberized layer 16A is laminated onto a fire-resistant and heat-resistant fiber base material 14A. This makes it relatively easy to achieve a laminated structure that satisfies the properties required of each layer, taking into account the affinity between the fiber base material 14A and the rubberized layer 16A.

[0080] Furthermore, in the protective sheet product 10 according to the embodiment of the present invention, when the structural member 86 is inserted into the insertion hole 18 and the inner periphery of the tubular member 36 attached around the insertion hole 18, the tubular member 36 is positioned perpendicular to the central axis (extension direction) 86a of the structural member 86 in a side view as shown in FIG. 12 , which is perpendicular to the extension direction of the structural member 86. This allows for uniform force application to the tubular member 36 at the penetration portion of the structural member 86 along the same circumference perpendicular to the extension direction of the structural member 86 in a side view. This makes it difficult for the tubular member 36 to shift position even when the protective sheet product 10 is exposed to wind, preventing gaps from forming between the structural member 86 and the protective sheet product 10. Furthermore, if welding lines are drawn on the structural member 86, these can be used as a guide for positioning the tubular member 36.

[0081] 1 and 13 to 15, the protective sheet product 10 according to the embodiment of the present invention corresponds to a columnar or cylindrical structural member 86, and the insertion holes 18 through which the structural member 86 is inserted are circular in plan view, and the tubular members 36 attached around the insertion holes 18 are roughly annular. This allows the tubular members 36, which have expanded due to internal pressure, to be tightly fitted tightly around the outer periphery of the penetration portion of the columnar or cylindrical structural member 86, making it possible to easily construct an airtight protective section 50 in a structure 82 having a columnar or cylindrical structural member 86.

[0082] 2, a curing compartment 50 according to an embodiment of the present invention is constructed by using, as the curing sheet 52, the curing sheet product 10 according to the embodiment of the present invention as described above and a plurality of sheet materials 54 having the same laminated structure as the curing sheet product 10, including the fire-resistant and heat-resistant layer 14 and airtight layer 16. That is, the curing sheet product 10 is installed in the portion where the structural member 86 extending between the inside and outside of the curing compartment 50 penetrates, and the plurality of sheet materials 54 are installed in the other portions. In this case, the fire-resistant and heat-resistant layer 14 side of the curing sheet product 10 is installed inside the curing compartment 50, and the fire-resistant and heat-resistant layer 14 side of each sheet material 54 is installed inside the curing compartment 50. This allows for the construction of a curing compartment 50 that is airtight and windproof, and can be used for work not only in rainy weather but also welding work inside. This allows for the construction of a curing compartment 50 that is airtight and windproof, and is therefore suitable for gas-shielded arc welding. Moreover, it is easy to install a ventilation function, and the internal temperature and humidity can be controlled using an air conditioner, improving the painting work environment, which is restricted by high humidity. Furthermore, as shown in Figure 1, work scaffolding 90 can be easily constructed around only a portion of the structure 82 as needed.

[0083] 17 , in the protective section 50 according to the embodiment of the present invention, when the sheet materials 54 used as the protective sheet 52 are side sheet materials 56, the sheet materials 54 installed in the portions corresponding to the side surfaces of the protective section 50 are defined as side sheet materials 56, and a cover piece 70 is attached to each side sheet material 56. That is, a sheet-like cover piece 70 is attached near the upper edge of each of the multiple side sheet materials 56 installed on the side surfaces of the protective section 50, along the extending direction of the upper edge. Here, the vicinity of the upper end of each side sheet material 56 is attached to the work scaffolding 90, and the side sheet material 56 is installed so as to be suspended from the work scaffolding 90. Therefore, the cover piece 70 is arranged to cover from the outside the attachment portion of the side sheet material 56 to the work scaffolding 90. This prevents gaps from forming in the attachment portion of the side sheet material 56, ensuring airtightness. Furthermore, the cover piece 70 is also used to connect adjacent side sheet materials 56 in the vertical direction, and the cover piece 70 attached to the lower side sheet material 56 is detachably joined to the lower end of the upper side sheet material 56. Therefore, the side sheet materials 56 can be easily connected and detached in the vertical direction via the cover piece 70.

[0084] Furthermore, in the protection section 50 according to the embodiment of the present invention, when vertically adjacent side sheet materials 56 are connected using the cover piece 70, the cover piece 70 attached to the lower side sheet material 56 and the upper side sheet material 56 are joined by the line fastener 74. More specifically, the outer surface 70a near the upper end of the cover piece 70 attached to the lower side sheet material 56 and the outer surface 56a near the lower end of the upper side sheet material 56 are overlapped in an opposing manner and pulled into the inside of the protection section 50, where they are joined by the line fastener 74. This allows the cover piece 70 of the lower side sheet material 56 to cover the attachment portion of the lower side sheet material 56 to the work scaffolding 90, and also allows the cover piece 70 of the lower side sheet material 56 and the upper side sheet material 56 to be firmly joined by the line fastener 74 over a wide area where they are overlapped. This makes it possible to efficiently and easily cover the attachment portions of the side sheet materials 56 with the cover pieces 70 and detachably join adjacent side sheet materials 56 in the vertical direction via the cover pieces 70. Furthermore, because the cover pieces 70 and the side sheet materials 56 are pulled inward and joined as described above, the joining work can be performed inside the protection section 50.

[0085] In addition, as shown in Fig. 2, the protective section 50 according to the embodiment of the present invention uses a combination of multiple protective sheet products 10 and multiple sheet materials 54 as the protective sheet 52. Furthermore, these multiple protective sheet products 10 and multiple sheet materials 54 are each joined to all of the adjacent sheets by detachable joining means such as hook-and-loop fasteners or wire fasteners. This allows the protective sheet products 10 and sheet materials 54 to be handled one by one when installing or removing them, making it possible for a single worker 92 to perform the work. Moreover, the protective sheet products 10 and sheet materials 54 can be replaced one by one when necessary, such as in the event of damage.

[0086] Furthermore, the protective section 50 according to the embodiment of the present invention is adapted for a structure 82 or work scaffolding 90 in which, in addition to a long structural member 86 for which the protective sheet product 10 is used, there is also another long structural member 88 extending across the inside and outside of the protective section 50, as shown in Fig. 18 . Specifically, a cut-out sheet material 58, in which a cut 60 is made in a sheet material 54, is installed as the protective sheet 52 in the area where the other structural member 88 will be installed. The cut 60 in the cut-out sheet material 58 includes an insertion portion 62 and a through portion 64. The insertion portion 62 is the portion through which the other structural member 88 extending across the inside and outside of the protective section 50 will be inserted, and is formed by cutting into a shape that follows the cross-sectional shape of the other structural member 88. The through portion 64 is formed by cutting from the insertion portion 62 to the edge of the notched sheet material 58, and is used as a portion through which another structural member 88 is passed when the notched sheet material 58 is installed.

[0087] Then, with another structural member 88 inserted into the insertion portion 62 and the incised sheet material 58 in place, each end of the insertion portion 62 and the through portion 64 are closed by the incision joining means 66. That is, the insertion portion 62 is cut to a shape that follows the cross-sectional shape of the other structural member 88, and if the cross-sectional shape of the other structural member 88 is T-shaped, for example, it will have three ends, and each of these ends is closed by the incision joining means 66 except for the insertion portion of the other structural member 88. Furthermore, after the through portion 64 is used as a passage until the other structural member 88 is placed in the insertion portion 62, the entire through portion 64 is closed by the incision joining means 66. As a result, even when the incised sheet material 58 is used, it is possible to prevent gaps from forming in the incisions 60, and the airtightness of the protection section 50 can be ensured. Therefore, by using the protective sheet product 10 and the notched sheet material 58, it is possible to accommodate structural members 86, 88 of various shapes and sizes, making it possible to flexibly respond to work sites for various structures 82.

[0088] On the other hand, the method for constructing a sanitary zone according to an embodiment of the present invention is intended to construct the sanitary zone 50 according to the embodiment of the present invention described above, and can achieve the same effects as those of the sanitary zone 50 according to an embodiment of the present invention. [Explanation of symbols]

[0089] 10 (10A to 10D): protective sheet product, 12: protective sheet, 14: fireproof and heat-resistant layer, 14A: fiber base material, 16: airtight layer, 16A: rubberized layer, 18: insertion hole, 20: slit, 28: slit joining means, 36: tubular member, 36a, 36b: end of tubular member, 38: divided portion, 42: length adjusting member, 50: protective section, 52: protective sheet, 54: sheet material, 56: side sheet material, 56a: outer surface of side sheet material, 58: sheet material with slit, 60: slit, 62: insertion portion, 64: through portion, 66: slit joining means, 70: cover piece, 70a: outer surface of cover piece, 74: wire fastener, 82: structure, 86: structural member, 86a: central axis (extension direction) of structural member, 88: another structural member, 90: work scaffolding

Claims

1. A curing sheet product used to form a curing section surrounding a part of a structural member in a structure having a long structural member using a curing sheet, A curing sheet having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer; an insertion hole formed in the curing sheet, through which the structural member is inserted; A slit extending from the periphery of the insertion hole to the edge of the protective sheet; A protective sheet product characterized by comprising a tubular member that is roughly annular with a divided portion in part of the extension direction, is attached along the periphery of the insertion hole with the divided portion aligned with the slit, and expands when pressurized internally.

2. A curing sheet product used to form a curing section surrounding a part of a structural member in a structure having a long structural member using a curing sheet, The present invention provides a curing sheet having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer, and a tubular member having a generally annular shape and a divided portion in a part of an extension direction, The tubular member is attached to the curing sheet in a state where the divided portion is aligned with a slit formed along the periphery of the insertion hole formed in the curing sheet from the periphery of the insertion hole to the edge of the curing sheet, A protective sheet product characterized in that the structural member is inserted through the insertion hole and the inner peripheral side of the tubular member, and the inside of the tubular member is pressurized and installed in an expanded state.

3. 3. A protective sheet product according to claim 2, wherein the opposing ends of the tubular member sandwiching the divided portion are connected by a length adjustment member that can adjust the distance between the ends.

4. 3. The protective sheet product according to claim 2, wherein the slits are closed by slit joining means.

5. 3. The protective sheet product according to claim 2, wherein the laminated structure comprises a rubber-coated layer laminated on a fire-resistant and heat-resistant fiber base material.

6. 3. The protective sheet product according to claim 2, wherein the tubular member is disposed so as to be perpendicular to the extending direction of the structural member when viewed from a side perpendicular to the extending direction of the structural member.

7. 3. The protective sheet product according to claim 2, wherein the insertion hole has a circular shape in a plan view, and the tubular member has a roughly annular shape.

8. In a structure having a long structural member, a curing section is formed by a curing sheet based on a work scaffold and surrounding a part of the structural member, The curing sheet product according to any one of claims 2 to 7 is installed in the area where the structural member penetrates, and a plurality of sheet materials having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer are installed in the other areas, A curing compartment, characterized in that both the curing sheet product and the sheet material are installed with their respective fire-resistant and heat-resistant layer sides facing inside the curing compartment.

9. Among the plurality of sheet materials, a plurality of side sheet materials installed in the portion corresponding to the side of the curing section are provided, and a sheet-like cover piece is attached near the upper edge of each of the side sheet materials along the extending direction of the upper edge, The protection section described in claim 8, characterized in that the cover piece is arranged to cover the attachment portion of the side sheet material to the work scaffolding, and the cover piece attached to the lower side sheet material and the lower end portion of the upper side sheet material are removably joined.

10. A protective compartment as described in claim 9, characterized in that the outer surface of the cover piece near the upper end attached to the lower side sheet material and the outer surface of the upper side sheet material near the lower end are stacked in an opposing manner, pulled into the inside of the protective compartment, and joined by a linear fastener.

11. In addition to the structural member, another long structural member is present on the structure or the work scaffold, A notched sheet material having a notch formed in the sheet material is installed in a portion where the other structural member penetrates, the notch has an insertion portion cut into a shape that follows the cross-sectional shape of the other structural member, through which the other structural member is inserted, and a through portion extending from the insertion portion to an edge of the notched sheet material, A curing section as described in claim 8, characterized in that when the other structural member is inserted through the insertion portion and the notched sheet material is installed, each end of the insertion portion and the through portion are closed by a notch joining means.

12. A method for constructing a curing section in a structure having a long structural member, using a work scaffold as a base, and surrounding a part of the structural member with a curing sheet, comprising: The curing sheet product according to any one of claims 2 to 7 is installed in the portion where the structural member penetrates, and a plurality of sheet materials having a laminated structure including a fire-resistant and heat-resistant layer and an airtight layer are installed in the other portion, and at this time, both the curing sheet product and the sheet materials are installed with their fire-resistant and heat-resistant layer sides facing inside the curing section, A method for constructing a protective section, characterized in that when installing the protective sheet product, the structural member is inserted through the slit and the divided portion into the insertion hole and the inner side of the tubular member, and then pressure is applied to the inside of the tubular member to tightly adhere the tubular member to the outer periphery of the structural member.

13. Among the plurality of sheet materials, a sheet-like cover piece is attached near the upper edge of each of the plurality of side sheet materials installed in the portion corresponding to the side of the curing section along the extending direction of the upper edge, A method for constructing a protective section as described in claim 12, characterized in that when the vicinity of the upper edge of the side sheet material is attached to the work scaffolding and installed, the cover piece is positioned to cover the attachment portion of the side sheet material to the work scaffolding, and when connecting adjacent side sheet materials in the vertical direction, the cover piece attached to the lower side sheet material and the lower end portion of the upper side sheet material are detachably joined.

14. A method for constructing a protective compartment as described in claim 13, characterized in that when connecting adjacent side sheet materials in the vertical direction, the outer surface near the upper end of the cover piece attached to the lower side sheet material and the outer surface near the lower end of the upper side sheet material are overlapped in an opposing manner, pulled into the inside of the protective compartment, and joined with linear fasteners.

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