Root wrapping

Abstract

To provide a root wrapping that is easy to install at the construction site. [Solution] The root wrap 1 is a root wrap that protects the lower end of a column 100 extending upward from the floor surface F of a building, and comprises a plurality of panels 10 arranged in a circumferential direction of the column in a position along the outer surface 100a of the column. The plurality of panels are erected spaced apart from the outer surface. The upper end positioning portion 20 is provided for positioning the upper end 11 of the plurality of panels relative to the column. The upper end positioning portion is positioned in contact with the outer surface.

Description

Technical Field

[0001] The present disclosure relates to a root wrap.

Background Art

[0002] Conventionally, a root wrap may be provided to protect the lower end of a column of a building (see, for example, Patent Document 1). In the root wrap described in Patent Document 1, a structure made of reinforced concrete is provided on the outer peripheral portion of the column.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, since the root wrap is a structure made of reinforced concrete, it is necessary to assemble reinforcing bars on the outer peripheral portion of the column, build a formwork, and place concrete at the construction site. Therefore, the construction of the conventional root wrap has many steps and is complicated, and the workability is poor.

[0005] The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a root wrap with good workability at the construction site.

Means for Solving the Problems

[0006] The 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 surface of a building, and includes a plurality of panels arranged in a state of being aligned in the circumferential direction of the column in a posture along 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 a root wrap with good workability at the construction site. [Brief explanation of the drawing]

[0008] [Figure 1] This is a longitudinal cross-sectional view of the root wrapping according to the first embodiment. [Figure 2] This is a cross-sectional view taken along line II-II in Figure 1. [Figure 3] This is a cross-sectional view taken along line III-III in Figure 1. [Figure 4] This is an enlarged cross-sectional view of the upper part of the root wrapping according to the first embodiment. [Figure 5] This is an enlarged cross-sectional view of the lower part of the root wrapping according to the first embodiment. [Figure 6] This is a longitudinal cross-sectional view of the root wrapping according to the second embodiment. [Figure 7] This is a cross-sectional view taken along line VII-VII in Figure 6. [Figure 8] This is an enlarged cross-sectional view of the lower part of the root wrapping according to the second embodiment. [Modes for carrying out the invention]

[0009] <First Embodiment> The root wrap 1 according to the first embodiment of this disclosure will be described below with reference to the drawings. Figure 1 is a longitudinal cross-section of root wrapping 1. Figure 2 is a cross-sectional view taken along line II-II in Figure 1. Figure 3 is a cross-sectional view taken along line III-III in Figure 1. Figure 4 is an enlarged cross-sectional view of the upper part of root wrapping 1. Figure 5 is an enlarged cross-sectional view of the lower part of root wrapping 1.

[0010] The base protection 1 protects the lower end of the column 100 that extends upward from the floor surface F of the building. As shown in Figure 1, the base protection 1 comprises a plurality of panels 10, an upper end positioning portion 20, and a lower end fixing portion 30.

[0011] In the following, when viewing the base 1 and column 100 from a vertical plane, the direction that circles around the central axis of column 100 is referred to as the circumferential direction of column 100. In the above plane view, the side moving away from the central axis of column 100 is called the outside, and the side moving closer to the central axis of column 100 is called the inside.

[0012] The outer surface 100a of the column 100 is wrapped with a fire-resistant coating material 102. In the illustrated example, the fire-resistant coating material 102 is positioned above the base wrapping 1 and is not provided on the inside of the base wrapping 1. The fire-resistant coating material 102 may also be provided on the inside of the base wrapping 1.

[0013] Multiple panels 10 are arranged to surround the lower end of the column 100. Multiple panels 10 are arranged in a circumferential direction of the column 100, in a orientation along the outer surface 100a of the column 100. Multiple panels 10 are erected spaced apart from the outer surface 100a of the column 100. In this specification, "multiple panels 10 spaced apart from the outer surface 100a of the column 100" includes cases where there is a space between the panels 10 and the outer surface 100a of the column 100, and cases where the fire-resistant covering material 102 is also placed inside the base wrapping 1, and the fire-resistant covering material 102 is placed between the multiple panels 10 and the outer surface 100a of the column 100.

[0014] Multiple panels 10 are erected on the floor surface F. A lower filler material 40 (filler) is placed between the floor surface F and the lower end surface of the panels 10. The lower filler material 40 is made of a flexible fire-resistant material. The material of the lower filler material 40 is, for example, bio-soluble fiber. The material of the lower filler material 40 may also be ceramic fiber, rock wool, glass wool, etc. If the floor surface F and the lower end surface of the panels 10 are not perfectly flat, a gap may occur between the floor surface F and the lower end surface of the panels 10. The lower filler material 40 fills the gap between the floor surface F and the lower end surface 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 other panels installed in parts of the building that are not columns 100 (for example, panels used in partition walls that divide rooms in a building). However, the panels 10 may have different thicknesses or be made of different materials than the above-mentioned other panels.

[0016] As shown in FIG. 2, in the present embodiment, the cross-sectional shape of the column 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 column 100 respectively. The four panels 10 are connected to each other and form a square frame shape in 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 separated from the outer peripheral surface 100a of the column 100. Although details will be described later, a spacer member 23 of the upper end positioning portion 20 is disposed between the inner surface 10b of the panel 10 and the outer peripheral surface 100a of the column 100.

[0017] The plurality of panels 10 are connected to each other by panel fixing portions 13. In the present embodiment, the panel fixing portion 13 is a plate-like member having an L-shaped cross-sectional shape. Four panel fixing portions 13 are provided at four outermost corners of the four panels 10 configured in a square frame shape respectively. The panel fixing portion 13 is fixed to the panel 10 using a bolt B1. The panel fixing portion 13 is provided over the entire vertical range of the panel 10. The panel fixing portion 13 may be provided continuously over the entire area of the panel 10 or may be provided discretely.

[0018] The upper end positioning portion 20 positions the upper end portions 11 of the plurality of panels 10 with respect to the column 100. The upper end positioning portion 20 is disposed in a state of abutting against 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, when the upper end positioning portion 20 (frame portion 21, spacer member 23) abuts against the outer peripheral surface 100a, it includes the case where the upper end positioning portion 20 directly contacts the outer peripheral surface 100a, and the case where the fireproof coating material 102 is also disposed inside the root wrap 1 and the upper end positioning portion 20 indirectly contacts the outer peripheral surface 100a through the fireproof coating 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 column 100 but are not connected to the outer peripheral surface 100a.

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

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

[0022] The first plate portion 22a is positioned above the panel 10, 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 circumferential surface 100a of the column 100. The inner edge of the first plate portion 22a is the inner circumferential edge 21a of the frame portion 21. The second plate portion 22b extends downward so as to form a ridge line horizontally along 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 bolts B2.

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

[0024] The spacer member 23 is composed of multiple (four in this embodiment) C-shaped steel sections 24. The multiple C-shaped steel sections 24 are identical in shape. The lip of the C-shaped steel section 24 abuts against the outer circumferential surface 100a of the column 100. The lip of the C-shaped steel section 24 is the inner circumferential edge 23a of the spacer member 23. The web of the C-shaped steel section 24 extends along the inner surface 10b of the panel 10. The web of the C-shaped steel section 24 abuts against the inner surface 10b of the panel 10. The web of the C-shaped steel section 24 is fixed to the panel 10 using bolts B3.

[0025] An upper filler material 41 is placed between the frame portion 21 (first plate portion 22a) and the panel 10. The upper filler material 41 is made of a flexible fire-resistant material. The material of the upper filler material 41 is, for example, bio-soluble fiber. The material of the upper filler material 41 may also be ceramic fiber, rock wool, glass wool, etc. If the upper end surface of the panel 10 and the lower surface of the first plate portion 22a are not perfectly flat, a gap may occur between the upper end surface of the panel 10 and the lower surface of the first plate portion 22a. The upper filler material 41 fills the gap between the upper end surface of the panel 10 and the lower surface of the first plate portion 22a, improving the stability of the panel 10's installation. The upper filler material 41 may also be placed 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 Figure 5, the lower end fixing portion 30 comprises an outer fixing portion 31 and an inner support portion 33. The outer fixing portion 31 is located on the outside of the panel 10, and the inner support portion 33 is located on the inside of the panel 10. The height of the upper end 31u of the outer fixing portion 31 is higher than the height of the upper end 33u of the inner support portion 33.

[0027] The outer fixing portion 31 is attached to the outer surface 10a of the panel 10 and fixed to the floor surface F. The outer fixing portion 31 is composed of a plurality of fixing members 32. In this embodiment, four fixing members 32 are provided corresponding to each of the four panels 10. In this embodiment, a single fixing member 32 is provided for each panel 10, but multiple fixing members 32 may be provided for each panel 10. The fixing member 32 is a plate-shaped steel material with 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., away from the column 100 and the panel 10) so as to form a ridge line horizontally along 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 internal support portion 33 is attached to the inner surface 10b of the panel 10. The internal support portion 33 is composed of a plurality of support members 34. In this embodiment, four support members 34 are provided corresponding to each of the four panels 10. In this embodiment, a single support member 34 is provided for each panel 10, but multiple support members 34 may be provided for each panel 10. The support member 34 is a plate-shaped steel material with an L-shaped cross-section. The support member 34 has a first plate portion 34a formed by bending and a second plate portion 34b (bottom portion).

[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 the direction away from the panel 10 and towards the column 100) so as to form a ridge line horizontally along with the first plate portion 34a. The second plate portion 34b extends along the floor surface F. The second plate portion 34b has a contact portion 34c that abuts against the outer surface 100a of the column 100. The contact portion 34c is the inner edge of the second plate portion 34b. In this specification, the term "contact portion 34c contacts the outer peripheral surface 100a" includes cases where the contact portion 34c directly contacts the outer peripheral surface 100a, and cases where the fire-resistant coating material 102 is also arranged on the inside of the root wrapping 1, and the contact portion 34c indirectly contacts the outer peripheral surface 100a via the fire-resistant coating material 102.

[0031] A spacer member 23 is positioned at the upper end 11 of the panel 10, and a second plate portion 32b is positioned 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 surface 100a of the column 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 surface 100a of the column 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 column 100 without, for example, marking the installation position of the panel 10 on the floor surface F.

[0032] As described above, the root wrap 1 according to this embodiment comprises a plurality of panels 10 arranged in a manner that is aligned in the circumferential direction of the column 100, along the outer surface 100a of the column 100. According to the above configuration, the foundation wrapping 1 can be constructed by arranging multiple panels 10, resulting in fewer and simpler steps compared to, for example, constructing a foundation wrapping made of reinforced concrete. Furthermore, the flexibility of constructing the foundation wrapping 1 is increased, for example, by allowing the foundation wrapping 1 to be constructed after finishing processes such as cleaning the floor surface F. Therefore, the constructability of the foundation wrapping 1 at the construction site is improved.

[0033] Furthermore, multiple panels 10 are erected at intervals from the outer surface 100a. According to the above configuration, construction errors such as bending of the column 100 can be absorbed, thus improving the workability of the base wrapping 1.

[0034] Furthermore, a lower filler material 40 is placed between the floor surface F and the panel 10. According to the above configuration, even if a gap exists between the floor surface F and the panel 10, the lower filler material 40 can fill this gap, thereby improving the stability of the panel 10's installation.

[0035] Furthermore, the base wrapping 1 includes an upper end positioning section 20 that positions the upper ends 11 of multiple panels 10 relative to the column 100. According to the above configuration, the upper end portion 20 can position the upper end portions 11 of multiple panels 10 relative to the column 100, thereby improving the workability of the base wrapping 1.

[0036] Furthermore, the upper end positioning portion 20 is positioned 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 column 100.

[0037] Furthermore, the upper end positioning portion 20 is annular in plan view and includes a frame portion 21 whose inner peripheral edge 21a abuts against the outer peripheral surface 100a. According to the above configuration, the position of the panel 10 relative to the outer surface 100a of the column 100 can be appropriately maintained.

[0038] Furthermore, the frame portion 21 is constructed by connecting a plurality of frame members 22 in a ring shape. According to the above configuration, the annular frame portion 21 can be easily constructed, 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 column 100.

[0039] Furthermore, the multiple frame members 22 have the same shape. According to the above configuration, manufacturing costs can be reduced by standardizing the frame members 22.

[0040] Furthermore, the frame portion 21 is connected to the panel 10 but not to the outer surface 100a. According to the above configuration, for example, the frame 21 can be attached to the panel 10 in advance before being transported to the construction site, which further improves the workability of the root wrapping 1.

[0041] Furthermore, the upper end positioning portion 20 includes a spacer member 23 positioned between the outer peripheral surface 100a and the panel 10. With 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 surface 100a of the column 100 and the panel 10.

[0042] Furthermore, the spacer member 23 is connected to the panel 10 but not to the outer peripheral surface 100a. According to the above configuration, for example, the spacer member 23 can be attached to the panel 10 in advance before being delivered to the construction site, which further improves the workability of the root wrapping 1.

[0043] Furthermore, the base wrap 1 includes lower end fixing parts 30 that fix the lower ends 12 of the multiple panels 10 to the floor surface F. With the above configuration, the lower end portion 30 can fix the lower end portion 12 of the panel 10 to the floor surface F, allowing the panel 10 to be installed stably.

[0044] Furthermore, the lower end fixing portion 30 includes an outer 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 support portion 33 that is attached to the inner surface 10b of the panel 10 and has a second plate portion 34b (bottom portion) that is aligned with the floor surface F. With the above configuration, the panel 10 is supported from both the outer surface 10a side and the inner surface 10b side by the outer surface fixing part 31 and the inner surface support part 33, so that the panel 10 does not fall over.

[0045] Furthermore, the multiple panels 10 are erected at intervals from the outer surface 100a, and the second plate portion 34b (bottom portion) has a contact portion 34c that abuts against the outer surface 100a. According to the above configuration, by appropriately adjusting the dimensions of the second plate portion 34b, a gap of a set dimension can be easily formed between the outer surface 100a of the column 100 and the panel 10. Furthermore, the presence of a contact portion 34c on the second plate portion 34b prevents the lower end portion 12 of the panel 10 from shifting relative to the column 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 separation between the panel 10 and the column 100 can be kept, thus preventing damage to the column 100.

[0046] Furthermore, the height of the upper end 31u of the outer fixing portion 31 is higher than the height of the upper end 33u of the inner support portion 33. With the above configuration, the outer fixing part 31 can also be used as a protective cover for a baseboard or the like.

[0047] Furthermore, each of the multiple panels 10 has the same shape. According to the above configuration, manufacturing costs can be reduced by standardizing the panel 10.

[0048] Furthermore, multiple 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 made of the same material as other panels installed in parts of the building that are not columns 100. According to the above configuration, the materials used in the other panel can be reused for panel 10. Furthermore, panel 10 and the other panel can be procured together, thereby reducing manufacturing costs.

[0050] <Second Embodiment> Next, the root wrap 1A of the second embodiment according to this disclosure will be described. In this embodiment, the same reference numerals are used for parts that are the same as those in the first embodiment, and their descriptions are omitted; only the differences will be described. Figure 6 is a longitudinal cross-sectional view of root wrapping 1A. Figure 7 is a cross-sectional view taken along line VII-VII in Figure 6. Figure 8 is an enlarged cross-sectional view of the lower part of root wrapping 1A.

[0051] In buildings, smaller, tapered columns are sometimes used as columns on upper floors compared to those on lower floors. Using tapered columns improves cost-effectiveness.

[0052] In this embodiment, column 100A is a tapered column. That is, column 100A is smaller in size than column 200 on the floor below. Column 100A and column 200 on the floor below are H-shaped steel beams with an H-shaped cross-section.

[0053] Column 100A has a column body 110 and a tapered portion 120. As shown in Figures 6 and 7, the column body 110 is an H-shaped steel having a web 111 and a pair of flanges 112. Viewed from the thickness direction of the web 111, the width of the column 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. Viewed from the thickness direction of the web 111, the width of the column body 110 is constant in 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 circumferential surface 100a of the column 100A.

[0054] The tapered section 120 connects the column body 110 to the column 200 of the lower floor. The lower part of the tapered section 120 is located below the floor surface F and is embedded in the floor. The tapered section 120 is an H-shaped steel having a web 121 and a pair of flanges 122. Viewed from the thickness direction of the web 121, the width of the tapered section 120 increases downwards. Viewed from the thickness direction of the web 121, the pair of flanges 122 extend so that they move further apart from each other as they move downwards (i.e., in the direction toward the opposing panel 10).

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

[0056] As described above, in the root wrap 1A according to this embodiment, the second plate portion 34b (bottom 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 column 100A, which is an economically efficient constricted column.

[0057] It should be noted that this disclosure is not limited to the embodiments described above with reference to the drawings, and various modifications are possible within its technical scope.

[0058] For example, in the above embodiment, multiple panels 10 are erected on the floor surface F. However, the disclosure is not limited thereto. For example, the panels 10 may be suspended and supported by brackets attached to columns 100, 100A, etc. The lower end of the panel 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 end of the panel 10 and the floor surface F.

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

[0060] In the above embodiment, the lower end fixing portion 30 fixes the lower ends 12 of the multiple panels 10 to the floor surface F using bolts. However, the disclosure is not limited thereto. For example, the lower end fixing portion 30 may consist of a bracket that is fixed to the lower end 12 of the panel 10 and also attached to the columns 100, 100A. In this case, the lower end 12 of the panel 10 is fixed to the floor surface F by the bracket acting as the lower end fixing portion 30. Alternatively, the lower end fixing portion 30 may consist of an annular groove formed in the floor surface F. In this case, the lower end 12 of the panel 10 is fixed to the floor surface F by being fitted into the annular groove.

[0061] Furthermore, it is possible to replace the components in the above embodiments with well-known components as appropriate, without departing from the spirit of this disclosure, and the above-described modifications may be combined as appropriate.

[0062] (Note) 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 surface of a building, and comprises a plurality of panels arranged in a manner aligned in the circumferential direction of the column, along the outer surface of the column. According to the above configuration, the foundation can be constructed by arranging multiple panels, resulting in fewer steps and a simpler process compared to, for example, constructing a foundation using reinforced concrete. Furthermore, the flexibility of foundation construction is increased, for example, by allowing foundation construction to be carried out after finishing processes such as floor cleaning. Consequently, the workability of foundation construction at the construction site is improved.

[0063] <2> the above <1> In the root wrapping related to this, the plurality of panels may be erected at intervals from the outer surface. According to the above configuration, construction errors such as bending of the columns can be absorbed, thus improving the workability of the foundation wrapping.

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

[0065] <4> the above <1> from <3> The base wrapping relating to any one of the above may include an upper end positioning section for positioning the upper ends of the plurality of panels relative to the column. With the above configuration, the upper end positioning section allows the upper ends of multiple panels to be positioned relative to the column, further improving the workability of the foundation wrapping.

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

[0067] <6> the above <5> In the root wrapping relating to this, the upper end positioning portion may include a frame portion that is annular in plan view and whose inner periphery abuts against the outer periphery surface. According to the above configuration, the position of the panel relative to the outer surface of the column can be properly maintained.

[0068] <7> the above <6> In the root wrapping related to this, the frame portion may be constructed by connecting a plurality of frame members in a ring shape. According to the above configuration, an annular frame can be easily constructed, and the inner edge of the frame can be easily brought into contact with the outer surface of the column.

[0069] <8> the above <7> In the root wrapping related to this, the multiple frame members may be of the same shape. According to the above configuration, manufacturing costs can be reduced by standardizing the frame components.

[0070] <9> the above <7> or <8> In the root wrapping related to this, the frame portion may be connected to the panel but not necessarily to the outer circumferential surface. According to the above configuration, for example, the frame can be attached to the panel in advance before being delivered to the construction site, which further improves the workability of the root wrapping.

[0071] <10> the above <4> from <9> In the root wrapping relating 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. With the above configuration, by appropriately adjusting the dimensions of the spacer members, a gap of a set dimension can be easily formed between the outer surface of the column and the panel.

[0072] <11> the above <10> In the root wrapping relating to this, the spacer member may be connected to the panel but not necessarily to the outer circumferential surface. According to the above configuration, for example, it is possible to attach the spacer members to the panels in advance before transporting them to the construction site, thereby improving the workability of the root wrapping.

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

[0074] <13> the above <12> In the root wrapping relating to this, 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. With the above configuration, the panel is supported from both the outer and inner sides by the outer fixing part and the inner support part, thus preventing the panel from falling over.

[0075] <14> the above <13> In the root wrapping relating to this, the plurality of panels are arranged spaced apart from the outer peripheral surface, and the bottom surface may have a contact portion that contacts the outer peripheral surface. With the above configuration, by appropriately adjusting the dimensions of the bottom surface, a gap of a set dimension can be easily formed between the outer surface of the column and the panel. Furthermore, the presence of a contact surface on the bottom prevents the lower end of the panel from shifting relative to the column when a load is applied to the building. Therefore, by maintaining the position of the lower end of the panel and keeping the distance between the panel and the column, damage to the column can be avoided.

[0076] <15> the above <13> In the root wrapping relating to this, the bottom portion may be sandwiched between the lower end of the panel and the floor surface. According to the above configuration, the root wrapping can be applied to economically efficient constricted columns.

[0077] <16> the above <13> from <15> In the case of a root wrap relating to any one of the above, the height of the upper end of the outer fixing portion may be higher than the height of the upper end of the inner support portion. According to the above configuration, the external fixing part can also be used as a protective cover for baseboards, etc.

[0078] <17> the above <1> from <16> In the root wrapping relating to any one of the above, each of the multiple panels may have the same shape. According to the above configuration, manufacturing costs can be reduced by standardizing the panels.

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

[0080] <19> the above <1> from <18> In the case of a root wrap relating to any one of the above, the plurality of panels may be panels made of the same material as other panels provided in the non-column portion of the building. According to the above configuration, the materials used in the separate panel can be reused for the panel. Furthermore, the panel and the separate panel can be procured together, reducing manufacturing costs. [Explanation of symbols]

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

Claims

1. A base wrap that protects the lower end of a column extending upward from the floor surface of a building, A root wrap comprising a plurality of panels arranged in a manner aligned in the circumferential direction of the column, along the outer surface of the column.

2. The root wrap according to claim 1, wherein the plurality of panels are erected at intervals from the outer peripheral surface.

3. The root wrap according to claim 1, wherein a filler material is placed between the floor surface and the panel.

4. The root wrap according to claim 1, further comprising an upper end positioning unit for positioning the upper ends of the plurality of panels relative to the column.

5. The root wrap according to claim 4, wherein the upper end positioning portion is arranged in contact with the outer circumferential surface.

6. The root wrap according to claim 5, wherein the upper end positioning portion is annular in plan view and comprises a frame portion whose inner periphery abuts against the outer periphery.

7. The root wrap according to claim 6, wherein the frame portion is constructed by connecting a plurality of frame members in a ring shape.

8. The root wrap according to claim 7, wherein the plurality of frame members have the same shape.

9. The base wrap according to claim 7, wherein the frame portion is connected to the panel but not to the outer peripheral surface.

10. The root winding according to claim 4, wherein the upper end positioning portion includes a spacer member disposed between the outer peripheral surface and the panel.

11. The root wrap according to claim 10, wherein the spacer member is connected to the panel but not to the outer peripheral surface.

12. The root wrap according to claim 1, further comprising a lower end fixing portion for fixing the lower ends of the plurality of panels to the floor surface.

13. The root wrap according to claim 12, wherein the lower end fixing portion comprises 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 surface that conforms to the floor surface.

14. The plurality of panels are arranged at intervals from the outer peripheral surface, The root wrap according to claim 13, wherein the bottom portion has a contact portion that contacts the outer peripheral surface.

15. The base portion is sandwiched between the lower end of the panel and the floor surface, as described in claim 13.

16. The root wrap according to claim 13, wherein the height of the upper end of the outer fixing portion is higher than the height of the upper end of the inner support portion.

17. The root wrap according to claim 1, wherein each of the plurality of panels has the same shape.

18. The root wrap according to claim 1, wherein the plurality of panels are fire-resistant panels.

19. The root wrap according to claim 1, wherein the plurality of panels are panels made of the same material as other panels provided in the non-column portions of the building.

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