Root wrapping

Abstract

To provide a root wrapping having good workability at a construction site. [Solution] The root wrapping 1 is a root wrapping that protects the lower end of a column 100 that extends upward from the floor surface F of a building, and includes a plurality of panels 10 that are arranged in a line circumferentially around the column, in a position that follows the column's outer peripheral surface 100a. The plurality of panels are erected at a distance from the outer peripheral surface. The root wrapping 1 includes upper end positioning portions 20 that position the upper ends 11 of the plurality of panels relative to the column. The upper end positioning portions are arranged in contact with the outer peripheral surface.

Description

[Technical Field]

[0001] The present disclosure relates to root wrapping. [Background technology]

[0002] Conventionally, building columns have been covered with root wrapping to protect the lower ends of the columns (see, for example, Patent Document 1). In the root wrapping described in Patent Document 1, a reinforced concrete structure is provided around the outer periphery of the column. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-219824 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in Patent Document 1, since the base wrapping is a reinforced concrete structure, it is necessary to assemble rebar around the periphery of the column, erect formwork, and pour concrete at the construction site. For this reason, conventional base wrapping construction involves many complicated steps and is difficult to work with.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a root wrapping that is easy to install at a construction site. [Means for solving the problem]

[0006] A root wrap according to one aspect of the present disclosure is a root wrap that protects the lower end of a column extending upward from the floor of a building, and comprises a plurality of panels arranged in a circumferential direction of the column in a position that follows the outer peripheral surface of the column. [Effects of the Invention]

[0007] According to one aspect of the present disclosure, it is possible to provide root wrapping that is easy to install at the construction site. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a vertical cross-sectional view of the root wrapping according to the first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 2 is an enlarged cross-sectional view of an upper part of the root wrapping according to the first embodiment. [Figure 5] FIG. 3 is an enlarged cross-sectional view of a lower part of the root wrapping according to the first embodiment. [Figure 6] FIG. 10 is a vertical cross-sectional view of a root wrapping according to a second embodiment. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. [Figure 8] FIG. 10 is an enlarged cross-sectional view of a lower part of a root wrapping according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment Hereinafter, a root winding 1 according to a first embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a longitudinal cross-sectional view of the root wrapping 1. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. Fig. 4 is an enlarged cross-sectional view of the upper part of the root wrapping 1. Fig. 5 is an enlarged cross-sectional view of the lower part of the root wrapping 1.

[0010] The root wrapping 1 protects the lower ends of columns 100 extending upward from the floor surface F of a building. As shown in FIG. 1 , the root wrapping 1 includes a plurality of panels 10, an upper end positioning portion 20, and a lower end fixing portion 30.

[0011] Hereinafter, in a plan view of the root wrapping 1 and the column 100 seen from the vertical direction, the direction going around the central axis of the column 100 is referred to as the circumferential direction of the column 100. In the above plan view, the side away from the central axis of the column 100 is referred to as the outside, and the side approaching the central axis of the column 100 is referred to as the inside.

[0012] A fire-resistant covering material 102 is wrapped around the outer peripheral surface 100a of the column 100. In the illustrated example, the fire-resistant covering material 102 is arranged above the root wrapping 1 and is not provided inside the root wrapping 1. The fire-resistant covering material 102 may also be arranged inside the root wrapping 1.

[0013] The multiple panels 10 are arranged to surround the lower end of the column 100. The multiple panels 10 are arranged lined up in the circumferential direction of the column 100, in a position that follows the outer peripheral surface 100a of the column 100. The multiple panels 10 are erected while being spaced apart from the outer peripheral surface 100a of the column 100. In this specification, the multiple panels 10 being spaced apart from the outer peripheral surface 100a of the column 100 includes a case where there is a space between the panel 10 and the outer peripheral surface 100a of the column 100, and a case where the fire-resistant covering material 102 is also arranged inside the root wrapping 1 and is arranged between the multiple panels 10 and the outer peripheral surface 100a of the column 100.

[0014] A plurality of panels 10 are erected on a floor surface F. A lower filler 40 (filler) is disposed between the floor surface F and the lower end surfaces of the panels 10. The lower filler 40 is formed of a flexible fire-resistant material. The material of the lower filler 40 is, for example, biodegradable fiber. The material of the lower filler 40 may also be ceramic fiber, rock wool, glass wool, or the like. If the floor surface F and the lower end surfaces of the panels 10 are not completely flat, a gap may occur between the floor surface F and the lower end surfaces of the panels 10. The lower filler 40 fills the gap between the floor surface F and the lower end surfaces of the panels 10, improving the stability of the installation of the panels 10.

[0015] Each of the multiple panels 10 has the same shape. The multiple panels 10 are fire-resistant panels. For example, the multiple panels 10 are panels of the same thickness and material as another panel provided in a portion of the building other than the columns 100 (for example, a panel used in a partition wall that divides rooms in the building). Note that the panel 10 may have a different thickness from the other panel, or may be made of a different material.

[0016] As shown in FIG. 2, in this embodiment, the cross section of the pillar 100 is square, and the outer peripheral surface 100a has four side surfaces. Four panels 10 are arranged so as to face the four side surfaces of the pillar 100, respectively. The four panels 10 are connected to each other and form a square frame shape in a plan view. The panel 10 has an outer surface 10a facing outward and an inner surface 10b facing inward. The inner surface 10b of the panel 10 is spaced apart from the outer peripheral surface 100a of the pillar 100. As will be described in detail later, a spacer member 23 of the upper end positioning part 20 is arranged between the inner surface 10b of the panel 10 and the outer peripheral surface 100a of the pillar 100.

[0017] The multiple panels 10 are connected to one another by panel fixing portions 13. In this embodiment, the panel fixing portions 13 are plate-like members with an L-shaped cross section. Four panel fixing portions 13 are provided at four protruding corners of the four panels 10 configured in the shape of a square frame. The panel fixing portions 13 are fixed to the panels 10 using bolts B1. The panel fixing portions 13 are provided across the entire vertical area of ​​the panel 10. The panel fixing portions 13 may be provided continuously across the entire area of ​​the panel 10, or may be provided discretely.

[0018] The upper end positioning portion 20 positions the upper ends 11 of the multiple panels 10 relative to the column 100. The upper end positioning portion 20 is arranged in contact with the outer peripheral surface 100a of the column 100. The upper end positioning portion 20 includes a frame portion 21 and a spacer member 23. In this specification, the upper end positioning portion 20 (frame portion 21, spacer member 23) abutting the outer peripheral surface 100a includes a case where the upper end positioning portion 20 directly contacts the outer peripheral surface 100a, and a case where the fire-resistant covering material 102 is also arranged inside the root wrapping 1 and the upper end positioning portion 20 indirectly contacts the outer peripheral surface 100a via the fire-resistant covering material 102.

[0019] The frame portion 21 and the spacer member 23 are connected to the panel 10. The frame portion 21 and the spacer member 23 abut against the outer peripheral surface 100a of the pillar 100, but are not connected to the outer peripheral surface 100a.

[0020] As shown in Fig. 3, the frame portion 21 is annular in plan view. An inner peripheral edge 21a of the frame portion 21 abuts against an outer peripheral surface 100a of the pillar 100. The frame portion 21 is formed by connecting a plurality of (four in this embodiment) frame members 22 in an annular shape. The frame members 22 have the same shape. In plan view, the frame members 22 are in the shape of an isosceles trapezoid. The legs of the frame members 22 are connected to each other by, for example, welding.

[0021] 4, the frame member 22 is a plate-shaped steel material having an L-shaped cross section perpendicular to the longitudinal direction at a longitudinal intermediate position. The frame member 22 has a first plate portion 22a and a second plate portion 22b formed by bending.

[0022] The first plate portion 22a is positioned above the panel 10 and close to the upper end surface of the panel 10. The first plate portion 22a extends horizontally. The inner edge of the first plate portion 22a abuts against the outer peripheral surface 100a of the column 100. The inner edge of the first plate portion 22a is the inner peripheral edge 21a of the frame portion 21. The second plate portion 22b extends downward to form a ridge line along the horizontal direction with the first plate portion 22a. The second plate portion 22b extends along the outer surface 10a of the panel 10. The second plate portion 22b abuts against the outer surface 10a of the panel 10. The second plate portion 22b is fixed to the panel 10 using bolt B2.

[0023] The spacer member 23 is disposed between the outer peripheral surface 100a of the pillar 100 and the inner surface 10b of the panel 10. The spacer member 23 is used to maintain a constant distance between the outer peripheral surface 100a of the pillar 100 and the inner surface 10b of the panel 10. The inner peripheral edge 23a of the spacer member 23 abuts against the outer peripheral surface 100a of the pillar 100.

[0024] The spacer member 23 is composed of a plurality of (four in this embodiment) C-shaped steels 24. The plurality of C-shaped steels 24 have the same shape. The lips of the C-shaped steels 24 abut against the outer peripheral surface 100a of the column 100. The lips of the C-shaped steels 24 are the inner peripheral edge 23a of the spacer member 23. The webs of the C-shaped steels 24 extend along the inner surface 10b of the panel 10. The webs of the C-shaped steels 24 abut against the inner surface 10b of the panel 10. The webs of the C-shaped steels 24 are fixed to the panel 10 using bolts B3.

[0025] An upper filler 41 is disposed between the frame 21 (first plate 22a) and the panel 10. The upper filler 41 is formed of a flexible fire-resistant material. The upper filler 41 may be made of, for example, biodegradable fiber. The upper filler 41 may also be made of ceramic fiber, rock wool, glass wool, or the like. If the upper end surface of the panel 10 and the lower surface of the first plate 22a are not perfectly flat, a gap may form between the upper end surface of the panel 10 and the lower surface of the first plate 22a. The upper filler 41 fills the gap between the upper end surface of the panel 10 and the lower surface of the first plate 22a, improving the stability of the installation of the panel 10. The upper filler 41 may also be disposed inside the spacer member 23 (C-shaped steel 24).

[0026] The lower end fixing portion 30 fixes the lower ends 12 of the multiple panels 10 to the floor surface F. As shown in FIG. 5 , the lower end fixing portion 30 includes an outer surface fixing portion 31 and an inner surface support portion 33. The outer surface fixing portion 31 is disposed on the outer side of the panel 10, and the inner surface support portion 33 is disposed on the inner side of the panel 10. The height of the upper end 31u of the outer surface fixing portion 31 is higher than the height of the upper end 33u of the inner surface support portion 33.

[0027] The outer surface fixing portion 31 is attached to the outer surface 10a of the panel 10 and fixed to the floor surface F. The outer surface fixing portion 31 is composed of a plurality of fixing members 32. In this embodiment, four fixing members 32 are provided corresponding to the four panels 10, respectively. In this embodiment, a single fixing member 32 is provided for one panel 10, but a plurality of fixing members 32 may be provided for one panel 10. The fixing member 32 is a plate-shaped steel material having an L-shaped cross section. The fixing member 32 has a first plate portion 32a and a second plate portion 32b that are formed by bending.

[0028] The first plate portion 32a extends along the outer surface 10a of the panel 10. The first plate portion 32a abuts against the outer surface 10a of the panel 10. The first plate portion 32a is fixed to the panel 10 using bolts B4. The second plate portion 32b extends outward (i.e., in a direction away from the column 100 and the panel 10) so as to form a ridge line along the horizontal direction with the first plate portion 32a. The second plate portion 32b extends along the floor surface F. The second plate portion 32b abuts against the floor surface F. The second plate portion 32b is fixed to the floor surface F using bolts B5.

[0029] The inner surface support portion 33 is attached to the inner surface 10b of the panel 10. The inner surface support portion 33 is composed of a plurality of support members 34. In this embodiment, four support members 34 are provided corresponding to the four panels 10, respectively. In this embodiment, a single support member 34 is provided for one panel 10, but a plurality of support members 34 may be provided for one panel 10. The support member 34 is a plate-shaped steel material having an L-shaped cross section. The support member 34 has a first plate portion 34a and a second plate portion 34b (bottom surface portion) that are formed by bending.

[0030] The first plate portion 34a extends along the inner surface 10b of the panel 10. The first plate portion 34a abuts against the inner surface 10b of the panel 10. The first plate portion 34a is fixed to the panel 10 using bolts B6. The second plate portion 34b extends inward (i.e., in a direction away from the panel 10 and toward the pillar 100) so as to form a ridge line along the horizontal direction with the first plate portion 34a. The second plate portion 34b extends along the floor surface F. The second plate portion 34b is formed with an abutment portion 34c that abuts against the outer peripheral surface 100a of the pillar 100. The abutment portion 34c is the inner edge of the second plate portion 34b. In this specification, the abutment portion 34c abutting the outer peripheral surface 100a includes a case where the abutment portion 34c directly contacts the outer peripheral surface 100a, and a case where the fire-resistant coating material 102 is also arranged inside the root wrapping 1 and the abutment portion 34c indirectly contacts the outer peripheral surface 100a via the fire-resistant coating material 102.

[0031] A spacer member 23 is disposed at the upper end 11 of the panel 10, and a second plate portion 32b is disposed at the lower end 12 of the panel 10. By appropriately adjusting the dimensions of the spacer member 23, a gap of a set dimension can be easily formed between the outer peripheral surface 100a of the pillar 100 and the panel 10 at the upper end 11 of the panel 10. By appropriately adjusting the dimensions of the second plate portion 34b, a gap of a set dimension can be easily formed between the outer peripheral surface 100a of the pillar 100 and the panel 10 at the lower end 12 of the panel 10. This makes it easy to position the panel 10 relative to the pillar 100, for example, without having to mark the installation position of the panel 10 on the floor surface F.

[0032] As described above, the root wrapping 1 according to this embodiment includes a plurality of panels 10 arranged side by side in the circumferential direction of the pillar 100 in a posture along the outer peripheral surface 100a of the pillar 100. According to the above configuration, the root wrapping 1 can be installed by arranging multiple panels 10, which requires fewer steps and is simpler than installing root wrapping on a reinforced concrete structure, for example. In addition, the flexibility of installing the root wrapping 1 is increased, for example, as the root wrapping 1 can be installed after a finishing process such as cleaning the floor surface F. This improves the ease of installing the root wrapping 1 at the construction site.

[0033] The panels 10 are arranged upright and spaced apart from the outer peripheral surface 100a. According to the above configuration, construction errors such as bending of the pillar 100 can be absorbed, thereby further improving the workability of the root wrapping 1.

[0034] In addition, a lower filler 40 is disposed between the floor surface F and the panel 10. According to the above configuration, even if a gap occurs between the floor surface F and the panel 10, the gap can be filled with the lower filler 40, thereby improving the stability of the installation of the panel 10.

[0035] The root wrapping 1 also includes upper end positioning portions 20 that position the upper ends 11 of the multiple panels 10 relative to the pillars 100. According to the above configuration, the upper end positioning portion 20 can position the upper end portions 11 of the multiple panels 10 relative to the column 100, further improving the ease of installation of the root wrapping 1.

[0036] Additionally, the upper end positioning portion 20 is disposed in contact with the outer peripheral surface 100a. According to the above configuration, the upper ends 11 of the multiple panels 10 can be easily positioned relative to the pillar 100.

[0037] The upper end positioning portion 20 is provided with a frame portion 21 that is annular in plan view and has an inner peripheral edge 21a that abuts against the outer peripheral surface 100a. According to the above configuration, the position of the panel 10 relative to the outer peripheral surface 100a of the pillar 100 can be appropriately maintained.

[0038] The frame portion 21 is formed by connecting a plurality of frame members 22 in an annular shape. According to the above configuration, the annular frame portion 21 can be easily configured, and the inner peripheral edge 21a of the frame portion 21 can be easily brought into contact with the outer peripheral surface 100a of the pillar 100.

[0039] Furthermore, the plurality of frame members 22 have the same shape. According to the above configuration, the frame member 22 can be standardized, thereby reducing manufacturing costs.

[0040] Furthermore, the frame portion 21 is connected to the panel 10, but is not connected to the outer peripheral surface 100a. According to the above configuration, for example, it is possible to attach the frame portion 21 to the panel 10 in advance before transporting it to the construction site, which further improves the workability of the root wrapping 1.

[0041] The upper end positioning portion 20 also includes a spacer member 23 disposed between the outer peripheral surface 100a and the panel 10. According to the above configuration, by appropriately adjusting the dimensions of the spacer member 23, a gap of a set dimension can be easily formed between the outer peripheral surface 100a of the pillar 100 and the panel 10.

[0042] Furthermore, the spacer member 23 is connected to the panel 10, but is not connected to the outer peripheral surface 100a. According to the above configuration, for example, it is possible to attach the spacer members 23 to the panels 10 in advance before transporting them to the construction site, which further improves the workability of the root wrapping 1.

[0043] The root wrapping 1 also includes a lower end fixing portion 30 that fixes the lower end portions 12 of the plurality of panels 10 to the floor surface F. According to the above configuration, the lower end 12 of the panel 10 can be fixed to the floor surface F by the lower end fixing portion 30, and the panel 10 can be installed stably.

[0044] The lower end fixing portion 30 also includes an outer surface fixing portion 31 that is attached to the outer surface 10a of the panel 10 and fixed to the floor surface F, and an inner surface support portion 33 that is attached to the inner surface 10b of the panel 10 and has a second plate portion 34b (bottom surface portion) that fits along the floor surface F. According to the above configuration, the outer surface fixing portion 31 and the inner surface supporting portion 33 support the panel 10 from both the outer surface 10a side and the inner surface 10b side, so that the panel 10 can be prevented from falling over.

[0045] The panels 10 are erected in a state spaced apart from the outer peripheral surface 100a, and the second plate portion 34b (bottom surface portion) is formed with a contact portion 34c that contacts the outer peripheral surface 100a. According to the above configuration, a gap of a set dimension can be easily formed between the outer peripheral surface 100a of the pillar 100 and the panel 10 by appropriately adjusting the dimension of the second plate portion 34b. Furthermore, since the abutment portion 34c is formed on the second plate portion 34b, it is possible to prevent the position of the lower end portion 12 of the panel 10 from shifting relative to the pillar 100 when a load is applied to the building. Therefore, the position of the lower end portion 12 of the panel 10 can be maintained and the panel 10 and pillar 100 can be kept apart, thereby preventing damage to the pillar 100.

[0046] Furthermore, the height of the upper end 31u of the outer surface fixing portion 31 is higher than the height of the upper end 33u of the inner surface supporting portion 33. According to the above configuration, the outer surface fixing part 31 can also be used as a protective cover for baseboards and the like.

[0047] Furthermore, each of the plurality of panels 10 has the same shape. According to the above configuration, the panel 10 can be standardized, thereby reducing manufacturing costs.

[0048] Additionally, the panels 10 are fire-resistant panels. According to the above configuration, the fire resistance of the root wrapping 1 is improved.

[0049] Furthermore, the multiple panels 10 are panels made of the same material as another panel provided in a part of the building that is not a column 100. According to the above configuration, the material used for the separate panel can be used for the panel 10. Furthermore, the panel 10 and the separate panel can be procured together, which reduces manufacturing costs.

[0050] Second Embodiment Next, a root wrap 1A according to a second embodiment of the present disclosure will be described. In this embodiment, the same components as those in the first embodiment will be denoted by the same reference numerals, and their description will be omitted, with only the differences being described. Fig. 6 is a vertical cross-sectional view of the root wrapping 1A. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6. Fig. 8 is an enlarged cross-sectional view of the lower part of the root wrapping 1A.

[0051] In buildings, narrow columns, which are smaller than the columns on the lower floors, are sometimes used for columns placed on the upper floors. The use of narrow columns improves economy.

[0052] In this embodiment, the column 100A is a tapered column. That is, the column 100A is smaller in size than the columns 200 of the lower floor. The column 100A and the columns 200 of the lower floor are H-shaped steel beams having an H-shaped cross section.

[0053] The pillar 100A has a pillar body 110 and a tapered portion 120. 6 and 7, the column main body 110 is an H-shaped steel having a web 111 and a pair of flanges 112. When viewed from the thickness direction of the web 111, the width of the column main body 110 (i.e., the length in the direction perpendicular to the vertical direction) is smaller than the width of the column 200 on the lower floor. When viewed from the thickness direction of the web 111, the width of the column main body 110 is constant along the vertical direction. The upper end positioning portion 20 (frame portion 21, spacer member 23) abuts against the outer surface of the flange 112 in the thickness direction and both end faces of the flange 112 in the width direction of the outer peripheral surface 100a of the column 100A.

[0054] The drawn portion 120 connects the column main body 110 to the column 200 of the lower floor. The lower part of the drawn portion 120 is located below the floor surface F and is embedded in the floor. The drawn portion 120 is an H-shaped steel having a web 121 and a pair of flanges 122. When viewed from the thickness direction of the web 121, the width of the drawn portion 120 increases downward. When viewed from the thickness direction of the web 121, the pair of flanges 122 extend so as to move away from each other as they extend downward (i.e., in directions approaching the opposing panels 10).

[0055] The root wrapping 1A protects the lower end of the column 100A, which is a tapered column. The root wrapping 1A of this embodiment differs from the root wrapping 1 of the first embodiment in the arrangement of the inner support part 33 of the lower end fixing part 30. That is, in this embodiment, a tapered part 120 whose width increases downward is arranged at the bottom of the root wrapping 1A, and therefore, to prevent interference between the tapered part 120 and the inner support part 33, the second plate part 34b of the inner support part 33 is sandwiched between the lower end of the panel 10 and the floor surface F.

[0056] As described above, in the root wrapping 1A according to this embodiment, the second plate portion 34b (bottom surface portion) is sandwiched between the lower end of the panel 10 and the floor surface F. According to the above configuration, the root wrapping 1A can be applied to the column 100A, which is an economical throttling column.

[0057] The present disclosure is not limited to the above-described embodiment described with reference to the drawings, and various modifications are possible within the technical scope thereof.

[0058] For example, in the above embodiment, the multiple panels 10 are erected on the floor surface F. However, the present disclosure is not limited to this. For example, the panels 10 may be suspended and supported by brackets or the like attached to the pillars 100, 100A. The lower ends of the panels 10 may be supported from below by a support base installed on the floor surface F. In these cases, a space may be formed between the lower ends of the panels 10 and the floor surface F.

[0059] In the above embodiment, the upper end positioning portion 20 (the frame portion 21 and the spacer member 23) is fixed to the panel 10 using bolts. However, the present disclosure is not limited to this. For example, the upper end positioning portion 20 may be fixed to the panel 10 by a fastening band or a magnet.

[0060] In the above embodiment, the lower end fixing portion 30 uses a bolt to fix the lower end portions 12 of the multiple panels 10 to the floor surface F. However, the present disclosure is not limited to this. For example, the lower end fixing portion 30 may be configured as a bracket that is fixed to the lower end portions 12 of the panels 10 and attached to the pillars 100, 100A. In this case, the lower end portions 12 of the panels 10 are fixed to the floor surface F by the bracket that serves as the lower end fixing portion 30. Alternatively, the lower end fixing portion 30 may be configured as an annular groove formed in the floor surface F. In this case, the lower end portions 12 of the panels 10 are fixed to the floor surface F by fitting the lower end portions 12 of the panels 10 into the annular groove.

[0061] In addition, within the scope of the present disclosure, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described modified examples may be combined as appropriate.

[0062] (Addendum) The root wrapping according to the above embodiment can be understood, for example, as follows. <1> A root wrap according to one aspect of the present disclosure is a root wrap that protects the lower end of a column extending upward from the floor of a building, and comprises a plurality of panels arranged in a circumferential direction of the column in a position that follows the outer peripheral surface of the column. According to the above configuration, the root wrapping can be performed by arranging multiple panels, which means that the process is simpler and requires fewer steps than, for example, when wrapping a reinforced concrete structure. Furthermore, the degree of freedom in the root wrapping work is increased, for example, as the root wrapping can be performed after finishing processes such as floor cleaning. Therefore, the workability of the root wrapping at the construction site is improved.

[0063] <2> the above <1> In the root wrapping according to the above, the plurality of panels may be provided standing upright and spaced apart from the outer peripheral surface. According to the above configuration, construction errors such as bending of the pillars can be absorbed, thereby further improving the ease of construction of the root wrapping.

[0064] <3> the above <1> or <2> In the root wrapping according to the above, a filler may be placed between the floor surface and the panel. According to the above configuration, even if a gap occurs between the floor surface and the panel, the gap can be filled with the filler material, thereby improving the stability of the panel installation.

[0065] <4> the above <1> from <3> The root wrapping according to any one of the above may include an upper end positioning portion that positions upper ends of the plurality of panels with respect to the pillar. According to the above configuration, the upper end positioning portion allows the upper ends of multiple panels to be positioned relative to the column, further improving the ease of installation of the root wrapping.

[0066] <5> the above <4> In the root wrapping according to the above aspect, the upper end positioning portion may be disposed in contact with the outer peripheral surface. According to the above configuration, the upper ends of the multiple panels can be easily positioned relative to the pillars.

[0067] <6> the above <5> In the root wrapping according to the above aspect, the upper end positioning portion may have a frame portion that is annular in plan view and whose inner peripheral edge abuts against the outer peripheral surface. According to the above configuration, the position of the panel relative to the outer peripheral surface of the pillar can be appropriately maintained.

[0068] <7> the above <6> In the root wrapping according to the above aspect, the frame portion may be configured by connecting a plurality of frame members in an annular shape. According to the above configuration, the annular frame portion can be easily formed, and the inner peripheral edge of the frame portion can be easily brought into contact with the outer peripheral surface of the pillar.

[0069] <8> the above <7> In the root wrapping according to the above, the plurality of frame members may have the same shape. According to the above configuration, the frame member can be standardized, thereby reducing manufacturing costs.

[0070] <9> the above <7> or <8> In the root wrapping according to the above, the frame portion may be connected to the panel and not connected to the outer peripheral surface. According to the above configuration, for example, it is possible to attach the frame portion to the panel in advance before transporting it to the construction site, further improving the ease of root wrapping work.

[0071] <10> the above <4> from <9> In the root wrapping according to any one of the above, the upper end positioning portion may include a spacer member disposed between the outer peripheral surface and the panel. According to the above configuration, by appropriately adjusting the dimensions of the spacer member, a gap of a set dimension can be easily formed between the outer peripheral surface of the pillar and the panel.

[0072] <11> the above <10> In the root wrapping according to the above, the spacer member may be connected to the panel and not connected to the outer peripheral surface. According to the above configuration, for example, it is possible to attach the spacer member to the panel in advance before transporting it to the construction site, which further improves the ease of installation of the root wrapping.

[0073] <12> the above <1> from <11> The root wrapping according to any one of the above may include a lower end fixing portion that fixes lower ends of the plurality of panels to the floor surface. According to the above configuration, the lower end of the panel can be fixed to the floor surface by the lower end fixing portion, allowing the panel to be installed stably.

[0074] <13> the above <12> In the root wrapping described above, the lower end fixing portion may include an outer fixing portion attached to the outer surface of the panel and fixed to the floor surface, and an inner support portion attached to the inner surface of the panel and having a bottom portion that conforms to the floor surface. According to the above configuration, the panel is supported from both the outer surface side and the inner surface side by the outer surface fixing portion and the inner surface supporting portion, so that the panel can be prevented from falling over.

[0075] <14> the above <13> In the root wrapping according to the above, the plurality of panels may be arranged at a distance from the outer peripheral surface, and the bottom surface portion may be formed with an abutment portion that abuts against the outer peripheral surface. According to the above configuration, by appropriately adjusting the dimensions of the bottom surface portion, a gap of a set dimension can be easily formed between the outer peripheral surface of the pillar and the panel. Furthermore, the formation of a contact portion on the bottom surface prevents the lower end of the panel from shifting position relative to the pillar when a load is applied to the building. This keeps the position of the lower end of the panel and maintains the separation between the panel and the pillar, preventing damage to the pillar.

[0076] <15> the above <13> In the root wrapping according to the above, the bottom surface portion may be sandwiched between a lower end of the panel and the floor surface. According to the above configuration, the root wrapping can be applied to economical choke columns.

[0077] <16> the above <13> from <15> In the root wrapping according to any one of the above items (1) to (5), a height of an upper end of the outer surface fixing portion may be higher than a height of an upper end of the inner surface supporting portion. According to the above configuration, the outer surface fixing part can also be used as a protective cover for baseboards and the like.

[0078] <17> the above <1> from <16> In the root wrapping according to any one of the above, each of the plurality of panels may have the same shape. According to the above configuration, the panels can be standardized, thereby reducing manufacturing costs.

[0079] <18> the above <1> from <17> In the root wrapping according to any one of the above, the plurality of panels may be fire-resistant panels. According to the above configuration, the fire resistance performance of the root wrapping is improved.

[0080] <19> the above <1> from <18> In the root wrapping according to any one of the above, the plurality of panels may be panels made of the same material as another panel provided in a part of the building that is not a column. According to the above configuration, the material used for the separate panel can be reused for the panel, and the panel and the separate panel can be procured together, thereby reducing manufacturing costs. [Explanation of symbols]

[0081] 1, 1A Root wrapping 10 Panels 10a Panel outer surface 10b Inner surface of panel 11 Top edge of panel 12 Bottom edge of panel 20 Upper end positioning part 21 Frame 21a Inner edge of frame 22 Frame members 23 Spacer member 30 Lower end fixing part 31 External fixing part 31u Upper end of outer fixing part 33 Inner support part 33u Upper end of inner support 34b 2nd plate part (bottom part) 34c Contact part 40 Lower filler (filler) 100, 100A pillar 100a Outer surface F Floor

Claims

1. A root wrap that protects the lower end of a column extending upward from the floor surface of a building, A plurality of panels arranged in a circumferential direction of the pillar in a posture along the outer peripheral surface of the pillar; an upper end positioning portion that positions upper ends of the plurality of panels relative to the column; Equipped with The upper end positioning portion is disposed in contact with the outer circumferential surface, The upper end positioning portion has a frame portion that is annular in a plan view and whose inner peripheral edge abuts against the outer peripheral surface.

2. A root wrap that protects the lower end of a column extending upward from the floor surface of a building, A plurality of panels arranged in a circumferential direction of the pillar in a posture along the outer peripheral surface of the pillar; an upper end positioning portion that positions upper ends of the plurality of panels relative to the column; Equipped with the upper end positioning portion includes a spacer member disposed between the outer peripheral surface and the panel, The upper end positioning portion has a frame portion that is annular in a plan view and whose inner peripheral edge abuts against the outer peripheral surface.

3. A root wrap that protects the lower end of a column extending upward from the floor surface of a building, A plurality of panels arranged in a circumferential direction of the pillar in a posture along the outer peripheral surface of the pillar; a lower end fixing portion that fixes the lower ends of the plurality of panels to the floor surface; Equipped with The lower end fixing portion includes an outer fixing portion attached to the outer surface of the panel and fixed to the floor surface, and an inner support portion attached to the inner surface of the panel and having a bottom portion that conforms to the floor surface.

4. The root wrapping method according to any one of claims 1 to 3, wherein the plurality of panels are erected while spaced apart from the outer peripheral surface.

5. The root wrapping according to any one of claims 1 to 3, wherein a filler is disposed between the floor surface and the panel.

6. The root wrapping device according to claim 1 or 2, wherein the frame portion is formed by connecting a plurality of frame members in an annular shape.

7. The root wrapping method according to claim 6 , wherein the plurality of frame members have the same shape.

8. The root wrapping according to claim 6 , wherein the frame portion is connected to the panel and is not connected to the outer peripheral surface.

9. The root wrapping according to claim 2 , wherein the spacer member is connected to the panel and is not connected to the outer circumferential surface.

10. The plurality of panels are arranged in a spaced-apart state from the outer circumferential surface, The root wrapping according to claim 3 , wherein the bottom surface portion is formed with a contact portion that contacts the outer peripheral surface.

11. The root wrapping according to claim 3 , wherein the bottom surface portion is sandwiched between a lower end of the panel and the floor surface.

12. The root wrapping according to claim 3 , wherein the height of an upper end of the outer fixing portion is higher than the height of an upper end of the inner supporting portion.

13. The root wrapping according to any one of claims 1 to 3, wherein each of the plurality of panels has the same shape.

14. The root wrapping method according to any one of claims 1 to 3, wherein the plurality of panels are fire-resistant panels.

15. The plurality of panels are panels made of the same material as another panel provided in a part of the building that is not a column.

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