Renovation Method

Abstract

To provide a pedestal fixing structure and a reform method capable of preventing reduction in waterproofness and workability even in a waterproof floor material in which a flat securing part for fixing a pedestal is not integrally formed.SOLUTION: A pedestal fixing structure 1 comprises: a reception metal fitting 7 having a securing part 72 fixed to the upper surface of a structure frame 4 of an outdoor floor part formed in an upper floor and an upper plate 70 formed separately upward from the structure frame 4; a lower attachment metal fitting 8 having a bottom plate 80 fixed to the upper plate 70 and a rise part 81 extending upward from the bottom plate 80 to receive a pedestal 3 of a column 2; a connection metal fitting 7 projecting downward from the lower end of the column 2 erected in the outdoor floor part and connected to a rise part 82 of the lower attachment metal fitting 8; and a waterproof floor material 9 laid on the structure frame 4. The waterproof floor material 9 has an opening 90 exposing the upper plate 70 upward, and a waterproof sheet 10 is formed between the upper plate 70 and the bottom plate 80 to close the opening 90.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a column base fixing structure for a column erected on an outdoor floor portion formed on an upper floor of a house. Construction This concerns the reform method used. [Background technology]

[0002] Outdoor floors such as balcony floors may have various pillars installed, such as handrail posts and structural pillars supporting the eaves above. In order to prevent rainwater from seeping in from the bases of the pillars of such outdoor floors to the underside of the outdoor floors, various waterproof structures have been proposed.

[0003] For example, Patent Document 1 describes the base of a handrail post erected on a sheet-waterproofed outdoor floor such as a rooftop or roof balcony, and wraps a band-shaped mounting sheet around the base, then wraps an intermediate sheet around it, and attaches a waterproofing member having a cylindrical tubular portion and a flange portion that expands the diameter of the lower end of the tubular portion from the outside.Then, the inner surface and upper edge of the tubular portion of the waterproofing member and the surface of the intermediate sheet that abuts against this inner surface, as well as the bottom surface of the flange portion of the waterproofing member and the portion of the waterproofing sheet that abuts against this bottom surface are heated to weld them to the base of the column and the floor surface, thereby fixing the base of the column while maintaining good waterproofing.

[0004] Patent Document 2 also discloses a waterproof structure in which a penetrating member such as a pillar is inserted through a waterproof sheet laid on the upper surface of a roof or floor, and the outer surface of the penetrating member is covered with a tubular waterproof section in the exposed portion above the upper surface of the waterproof sheet, and a positioning section that prevents the tubular waterproof section from shifting downward protrudes inward from the upper end of the peripheral wall of the tubular waterproof section and is placed on the upper end surface of the penetrating member, thereby improving the waterproof performance of the penetrating section and improving workability. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 10-212794 [Patent Document 2] JP 2010-37829 A Summary of the Invention [Problem to be solved by the invention]

[0006] By the way, for outdoor floors such as balconies, in addition to sheet waterproofing, outdoor floors in which waterproof pans made of hard resin are fixed in consideration of ease of construction and workability are known. Since such outdoor floors deteriorate over time due to exposure to rain and ultraviolet rays, renovations are carried out to replace the waterproof flooring after a certain number of years have passed.

[0007] Some waterproof pans with this type of waterproof structure have a horizontal flat fixing part integrally formed with metal fittings for fixing the column base, thereby improving the waterproofing of the column base. When replacing a waterproof pan that has deteriorated over time, it may be the case that a long time has passed since the original construction and the flooring material with the same specifications as the waterproof pan at that time has already been discontinued. In such cases, a waterproof flooring material with different specifications, for example made of steel plate, is laid. However, such a new waterproof flooring material does not have a flat fixing part integrally formed with the column base, and there is a problem that in order to take waterproofing into consideration, the part of the existing waterproof pan that fixes the column base must be cut off and reused.

[0008] Therefore, the present invention provides a column base fixing structure that can prevent a decrease in waterproofing and workability even in a waterproof floor material that does not have a flat fixing portion integrally formed for fixing the column base. of The purpose is to provide a method of remodeling. [Means for solving the problem]

[0009] The first reform method of the present invention is as follows: A method for renovating an outdoor floor by replacing an existing waterproof floor material with a new waterproof floor material and replacing an existing column base fixing structure with a new column base fixing structure, the new column base fixing structure being:A receiving fitting having a fixing part fixed to the upper surface of a structural frame of an outdoor floor part formed on an upper floor, and an upper plate part horizontally formed spaced upward from the upper surface of the structural frame, a bottom plate part fixed to the upper plate part, and a lower mounting fitting having a rising part extending upward from the bottom plate part to receive a column base part of a column, a lower end of the column standing on the outdoor floor part protruding downward, and the lower mounting fitting's The rising portion A connecting fitting connected to, a waterproof floor material laid on the structural frame, the waterproof floor material having an opening exposing the upper plate part upward, The film is attached so as to cover the entire opening, Between the upper plate part and the bottom plate part and has an insertion hole into which a bolt is inserted to fix the upper plate portion and the bottom plate portion. A waterproof sheet is formed, and the upper plate part of the receiving fitting is The upper plate Provided with a through fixing hole, into which the bolt protruding upward is inserted and welded, and the space between the bolt and the fixing hole is sealed, The column base fixing structure includes a bolt protruding from the fixing hole of the upper plate portion of the receiving bracket, which is inserted into the insertion hole formed in the waterproof sheet and the receiving hole formed in the bottom plate portion of the lower mounting bracket, and a nut is fastened from above the bottom plate portion to fix the lower mounting bracket to the receiving bracket. The renovation method includes a step of removing an existing column material erected on the existing waterproof floor material, a step of removing the existing waterproof floor material from the structural frame of the outdoor floor portion, a step of fixing the receiving bracket to the structural frame, a step of laying the waterproof floor material on the structural frame so that the upper plate portion of the receiving bracket overlaps the opening, a step of attaching the waterproof sheet to cover the opening, a step of fixing the bottom plate portion of the lower mounting bracket by sandwiching the waterproof sheet between the upper plate portion of the receiving bracket, and a step of connecting a connecting bracket protruding from the lower end of a newly installed column material to the rising portion of the lower mounting bracket. It is characterized by.

[0011] In addition to the features of the present invention The second renovation method is the first renovation method It is characterized in that the upper surface of the waterproof floor material is formed at the same height as the upper surface of the upper plate part.

[0012] In addition to the features of the present invention The third renovation method is the first renovation method It is characterized in that the upper surface of the waterproof floor material is lower than the upper surface of the upper plate part.

Effect of the Invention

[0014] According to the first column base fixing structure of the present invention, since the receiving fitting is fixed to the structural frame, the lower mounting fitting is fixed to the receiving fitting, and the column base is fixed to the lower mounting fitting via the connecting fitting, the column base can be fixed to the structural frame with sufficient strength. And, the waterproof floor material has an opening exposing the upper plate part of the receiving fitting upward and is laid on the structural frame, and a waterproof sheet for closing the opening is formed between the upper plate part and the bottom plate part of the lower mounting fitting, so that the waterproof property of the column base part can be ensured with a minimum of sealing.

[0015] According to the second column base fixing structure of the present invention, a bolt is inserted from the bottom upward into a fixing hole formed in the upper plate portion of the receiving bracket and welded thereto. Therefore, by fixing the bolt in advance and then performing a waterproofing treatment between the bolt and the fixing hole, reliable waterproofing can be achieved, thereby improving workability.

[0016] According to the third column base fixing structure of the present invention, the upper surface of the waterproof flooring material is formed flush with the upper surface of the upper plate portion, so that when a waterproof sheet is installed to cover an opening in the waterproof flooring material, it can be installed flatly, thereby improving waterproofing and ease of installation.

[0017] According to the fourth column base fixing structure of the present invention, the upper surface of the waterproof floor material is lower than the upper surface of the upper plate portion, so that rainwater that runs down the column base portion flows from the upper plate portion to the upper surface of the waterproof floor material, and can flow down the upper surface of the waterproof floor portion along the water gradient of the outdoor floor portion to the drain outlet, thereby improving waterproofing.

[0018] According to the renovation method of the present invention, when replacing existing waterproof flooring with new waterproof flooring, the support bracket is fixed to the structural frame, the waterproof flooring is laid so that the upper plate of the support bracket overlaps the opening, a waterproof sheet is attached to cover the opening, and then the waterproof sheet is sandwiched between the upper plate of the support bracket and the bottom plate of the lower mounting bracket is fixed, thereby ensuring waterproofing of the column base with simple construction during renovation. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is a horizontal cross-sectional view illustrating the overall configuration of the column base fixing structure. [Diagram 2] A cross-sectional view taken from a horizontal direction 90° different from that of Figure 1, explaining the overall configuration of the column base fixing structure. [Diagram 3] FIG. 4 is a perspective view illustrating the external configuration of the receiving fitting. [Figure 4] (A) is a horizontal cross-sectional view illustrating the state in which the support bracket is fixed to the structural frame, and (B) is an enlarged view of a portion of (A). [Diagram 5] FIG. 4 is a perspective view illustrating the external configuration of the lower mounting bracket. [Figure 6] FIG. 2 is a perspective view illustrating the external configuration of the waterproof sheet. [Figure 7] A partially omitted perspective view showing the appearance of the column base mounting structure before renovation. [Figure 8] A partially omitted oblique view showing the column base mounting structure in the state where the column base design cover has been slid upward to expose the existing mounting brackets and existing connecting brackets. [Figure 9] A partially omitted oblique view showing the state in which the existing mounting brackets and the existing pillar material have been removed from the planar fixing portion of the existing waterproof floor material. [Figure 10] A partially omitted perspective view showing the existing waterproof floor material removed from the structural frame. [Figure 11] FIG. 4 is a partially omitted perspective view illustrating the state in which a receiving bracket is attached to a structural frame. [Figure 12] FIG. 13 is a partially omitted perspective view illustrating the state in which a base folded plate is laid on a structural frame. [Figure 13] FIG. 13 is a partially omitted perspective view illustrating the state in which a waterproof floor material is laid on a base folded plate. [Figure 14] 1 is a partially omitted perspective view illustrating the state in which waterproof tape is attached to the outer peripheral edge of a waterproof floor material. [Figure 15] FIG. 13 is a partially omitted perspective view illustrating the state in which a waterproof sheet is attached to an opening. [Figure 16] FIG. 13 is a partially omitted perspective view illustrating the state of attaching the lower mounting bracket from above the waterproof sheet. [Figure 17] FIG. 13 is a partially omitted perspective view illustrating the state in which the column base of the column is attached to the lower mounting bracket. [Figure 18] A cross-sectional view illustrating a modified column base fixing structure in which the upper surface of the waterproof floor material is formed lower than the upper surface of the upper plate portion of the receiving bracket. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the column base fixing structure 1 and the remodeling method of the present invention will be described with reference to the drawings. In this embodiment, the column base fixing structure 1 is a structure for fixing a column base 3 of a column 2 erected to support an eaves (not shown) that is provided to protrude above an outdoor floor such as a balcony formed on an upper floor of a detached house. The building on which the outdoor floor is formed is not limited to a detached house, but may be an apartment building or other facility. The outdoor floor is not limited to a balcony, but may be a floor formed with a structural frame 4 inside and exposed to the outdoors. The outdoor floor is installed on an upper floor and may have a cantilever structure, or the lower side of the outdoor floor may be supported by a column material. The erected column 2 is not limited to one that supports the eaves, and any use is possible as long as it is erected on the outdoor floor, such as a column 2 that plays the role of a handrail support or a column 2 that supports a structure such as a eaves provided above the outdoor floor.

[0021] The structural frame 4, which forms the framework of the outdoor floor section, is a rectangular frame fixed between a pair of arms (not shown) that are fixed to the building's structural body (not shown) and extend toward the outdoors. The structural frame 4 is formed into a rectangle by welding C-shaped steel and square steel. The pillar 2 has a main body (not shown) formed long vertically by combining steel materials on the inside, and a cylindrical decorative material formed to surround the outside of the main body. A connecting metal fitting 5 is formed at the lower end of the pillar 2 so as to protrude downward.

[0022] As shown in Figures 1 and 2, the column base fixing structure 1 comprises a receiving bracket 7 fixed to the upper surface of the square steel of the structural frame 4, a lower mounting bracket 8 fixed to the receiving bracket 7, a connecting bracket 5 connecting the column base portion 3 to the lower mounting bracket 8, a base folded plate 6 laid on the structural frame 4, a waterproof floor material 9 laid on the base folded plate 6, and a waterproof sheet 10 that covers an opening 90 provided in the waterproof floor material 9.

[0023] As shown in Fig. 3, the receiving bracket 7 is formed into a hat shape by bending a steel plate, and has an upper plate portion 70 formed on a horizontal flat plate, two connecting plate portions 71 extending downward from both side edges of the upper plate portion 70, and two fixing portions 72 formed horizontally so as to spread outward from the lower end of the connecting plate portion 71 and fixed to the upper surface of the structural frame 4. Two screw holes 73 are formed in each of the fixing portions 72, and as shown in Fig. 2, fixing screws 74 are driven into the square steel of the structural frame 4 through the screw holes 73 to be fixed. By fixing the receiving bracket 7 to the structural frame 4, the lower mounting bracket 8 fixed to the receiving bracket 7, the connecting bracket 5, and the column base portion 3 fixed to the connecting bracket 5 can be fixed to the structural frame 4 with sufficient strength. As shown in FIG. 4, the upper plate portion 70 is provided with two fixing holes 75, and a bolt 76 having a hexagonal head is inserted into each of the two fixing holes 75 so as to protrude upward from below, and the bolt 76 and the fixing hole 75 are fixed by welding at three points. An aluminum plate 77 is fixed to the connection plate portion 71 of the receiving bracket 7 so as to abut against the side of the head of the bolt 76. The aluminum plate 77 abuts against the side of the head of the bolt 76, making the bolt 76 unrotatable, and prevents the bolt 76 from rotating together with the nut when the lower mounting bracket 8 is fixed, which will be described later, and prevents unnecessary load from being applied to the welded portion. A sealant 78 is applied to the entire circumference of the portion of the bolt 76 protruding from the fixing hole 75 to prevent water from entering between the fixing hole 75 and the bolt 76. In this way, the bolt 76 is inserted from below to above and welded, and by fixing the bolt 76 in advance and then performing a waterproofing treatment between the bolt 76 and the fixing hole 75, reliable waterproofing can be achieved, thereby improving workability.

[0024] As shown in FIG. 5, the lower mounting bracket 8 is formed by bending a steel plate into a U-shape in a side view, and has a horizontal flat bottom plate portion 80 fixed to the upper plate portion 70, and two rising portions 81 extending upward from both side edges of the bottom plate portion 80 to receive the connecting bracket 5 of the column base portion 3. Elastic expanded polyethylene foam is attached to the underside of the bottom plate portion 80, ensuring watertightness between the waterproof sheet 10 that abuts against the underside of the bottom plate portion 80. The bottom plate portion 80 is formed with a receiving hole 83 into which the bolt 76 protruding from the fixing hole 75 of the upper plate portion 70 is inserted. In addition, a flexible synthetic resin foam is attached to the underside of the bottom plate portion 80. Two connecting holes 82 are provided in each of the rising portions 81, into which connecting bolts 84 for connecting the columns 2 can be inserted.

[0025] The connecting fittings 5 ​​are two steel plates formed into a rectangular flat plate shape, and are fixed so as to be parallel to each other on the lower end surface of the pillar 2. Each of the connecting fittings 5 ​​is provided with two elongated holes 50 that are long in the vertical direction.

[0026] The base folded plate 6 is a plate material laid on the structural frame 4 and serves as the base of the waterproof flooring 9, and is formed by bending a steel plate. The base folded plate 6 has a notch 60 formed to expose the upper plate portion 70 of the receiving metal fitting 7 upward. The waterproof flooring 9 is a plate-shaped material with an upper surface that forms a water gradient, and an opening 90 is formed to expose the upper plate portion 70 of the receiving metal fitting 7 upward. The upper plate portion 70 of the receiving metal fitting 7 and the upper surface of the waterproof flooring 9 are formed at approximately the same height. Strictly speaking, since the waterproof flooring 9 has a water gradient, the upper surface of the upper plate portion 70 and the upper surface of the waterproof flooring 9 are formed at the same height in part, and a slight step is formed between the upper surface of the upper plate portion 70 and the upper surface of the waterproof flooring 9 in the other part, but the step is not large enough to interfere with the construction of the waterproof sheet 10 when the waterproof sheet 10 blocks the opening 90, and the waterproof sheet 10 can be constructed almost flat when installed, thereby improving waterproofness and workability.

[0027] The waterproof sheet 10 is a sheet sandwiched between the upper plate portion 70 of the receiving bracket 7 and the bottom plate portion 80 of the lower mounting bracket 8, and is arranged so as to block the opening 90 of the waterproof floor material 9. By blocking the opening 90 of the waterproof floor material 9 with the waterproof sheet 10 in this way, the waterproofness of the column base portion 3 can be ensured with a minimum of sealing. The waterproof sheet 10 is a rectangular thin plate made of polyvinyl chloride, and a steel plate is welded to the center. The waterproof sheet 10 has an insertion hole 11 for inserting a bolt 76. The bolt 76 protruding from the fixing hole 75 of the upper plate portion 70 of the receiving bracket 7 is inserted into the insertion hole 11 of the waterproof sheet 10 and the receiving hole 83 of the bottom plate portion 80 of the lower mounting bracket 8, and the nut is fastened from the upper side of the bottom plate portion 80 to fix the lower mounting bracket 8 to the receiving bracket 7. Then, a sealing process is performed from above the protruding bolt 76 and the nut to prevent water from entering between the bolt 76 and the insertion hole 11 and the receiving hole 83. In addition, waterproofing is performed by attaching waterproof tape 12 to the edges of the waterproof floor material 9 and the waterproof sheet 10 so that it covers the adjacent waterproof floor material 9, etc.

[0028] Then, while fixed to the receiving bracket 7, the connecting bracket 5 is abutted against the two raised portions 81 of the lower mounting bracket 8, and the connecting bolt 84 is inserted into the connecting hole 82 and the long hole 50, and connected with the connecting nut 85, and the pillar 2 is erected on the outdoor floor.

[0029] In this embodiment, as described above, the upper surface of the waterproof flooring 9 is formed at the same height as the upper surface of the upper plate portion 70. Here, the waterproof flooring 9 has a slightly inclined water gradient, and being at the same height as the upper surface of the upper plate portion 70 means that at least a part of the upper surface of the waterproof flooring 9 is at the same height as the upper surface of the upper plate portion 70. In reality, due to the water gradient, a slight step is formed between the upper surface of the upper plate portion 70 and the upper surface of the waterproof floor, but this is not an obstacle when installing the waterproof sheet 10 provided on the upper plate portion 70.

[0030] Next, a method of remodeling in which an existing waterproof floor material 20 of an outdoor floor part is replaced with a new waterproof floor material 9 due to deterioration over time will be described. The existing waterproof floor material 20 is a waterproof pan made of resin, and a flat fixing part 22 is formed at the position where an existing column material 21 is erected, in which a bolt hole 23 is provided for fixing a metal fitting that receives a column base part 3 of the existing column material 21. A nut 24 is fixed to the back side of the bolt hole 23, and an existing mounting metal fitting 26 that receives the column base part 3 is fixed by screwing a bolt 25. Then, an existing connecting metal fitting 29 protruding from the column base part 3 is fixed to the existing mounting metal fitting 26 with a column fixing bolt 30 and a nut, and the existing mounting metal fitting 26 and the connecting metal fitting 5 are covered with a cylindrical column base design cover material 27 to form the existing column base part 3.

[0031] In the case of a remodeling method for replacing an existing waterproof flooring 20 with a new waterproof flooring 9, first, although not shown, the eaves ceiling of the eaves arranged above the outdoor floor is removed to expose the column head of the column 2. Then, a process is performed to remove the column base 3 of the existing column material 21 fixed on the existing waterproof flooring 20 from the existing waterproof flooring 20. Specifically, as shown in Figs. 7 and 8, the column base design cover material 27 is slid upward to expose the existing mounting bracket 26 and the connecting bracket 5. Then, as shown in Fig. 9, the column fixing bolt 30 and the nut are removed to remove the connecting bracket 5 from the existing mounting bracket 26, and the bolt 25 is loosened to remove the existing mounting bracket 26 from the flat fixing portion 22 of the existing waterproof flooring 20.

[0032] Next, a process is performed to remove the existing waterproof floor material 20 from the structural frame 4 of the outdoor floor portion. Specifically, the existing waterproof tape (not shown) is removed, and the existing waterproof floor material 20, which is a waterproof pan, is removed, and the floor drain set 28, which is provided with a drain outlet connected to a downspout (not shown), is removed.

[0033] Then, after adjusting the horizontal level of the structural frame 4, the next step is to fix the receiving bracket 7 to the structural frame 4. Specifically, as shown in Fig. 11, the receiving bracket 7 is placed at the position where the column 2 of the structural frame 4 will be erected. Then, the fastening portion 72 of the receiving bracket 7 is brought into contact with the upper surface of the square steel of the structural frame 4, and fixing screws 74 are driven into the square steel from above the screw holes 73 of the fastening portion 72, thereby fixing the receiving bracket 7 to the structural frame 4. At this time, bolts 76 are inserted into two fixing holes 75 provided in the upper plate portion 70 of the receiving bracket 7 so as to protrude upward, and are fixed by welding.

[0034] Next, as shown in Fig. 12, the base folded plate 6 is laid on the structural frame 4 with the cutout 60 formed in the base folded plate 6 exposing the upper plate 70 of the receiving bracket 7 upward. Then, as shown in Fig. 13, the waterproof floor material 9 is laid on the base folded plate 6 and the floor drain set 28 is attached. At this time, the opening 90 formed by cutting out the edge of the waterproof floor material 9 and the upper plate 70 of the receiving bracket 7 are arranged to overlap, and the upper plate 70 and the bolt 76 protruding upward from the upper plate 70 are exposed upward from the opening 90.

[0035] Then, as shown in FIG. 14, a waterproof tape 12 is applied to the outer periphery of the waterproof flooring 9. Then, as shown in FIG. 15, a waterproof sheet 10 is attached to cover the opening 90 of the waterproof flooring 9. The waterproof sheet 10 has an insertion hole 11, and the bolt 76 protruding from the opening 90 is inserted into the insertion hole 11 and protrudes above the waterproof sheet 10. Then, as shown in FIG. 16, the bottom plate portion 80 of the lower mounting bracket 8 is fixed to the upper plate portion 70 of the receiving bracket 7 from above the waterproof sheet 10. The bottom plate portion 80 of the lower mounting bracket 8 has a receiving hole 83, and the bolt 76 protruding above the waterproof sheet 10 is inserted into the receiving hole 83 and protrudes above the bottom plate portion 80 of the lower mounting bracket 8. Then, a nut is fastened to the bolt 76 protruding upward, and the lower mounting bracket 8 is fixed to the receiving bracket 7. Then, the connecting bracket 5 protruding from the lower end of the newly installed column 2 is connected to the rising portion 81 of the lower mounting bracket 8, and the column base design cover material 27 provided on the column base portion 3 is slid downward to hide the lower mounting bracket 8 and the connecting bracket 5, thereby completing the renovation of replacing the waterproof floor material 9.

[0036] In this way, when replacing the existing waterproof flooring 20 with a new waterproof flooring 9, the support bracket 7 is fixed to the structural frame 4, the waterproof flooring 9 is laid so that the upper plate portion 70 of the support bracket 7 overlaps the opening 90, a waterproof sheet 10 is attached to cover the opening 90, and then the bottom plate portion 80 of the lower mounting bracket 8 is fixed with the waterproof sheet 10 sandwiched between the upper plate portion 70 of the support bracket 7, thereby ensuring waterproofing of the column base portion 3 with simple construction during renovation.

[0037] In this embodiment, the upper surface of the waterproof flooring 9 and the upper surface of the upper plate portion 70 of the receiving bracket 7 are formed at the same height, but as shown in Fig. 18, the upper surface of the waterproof flooring 9 may be formed lower than the upper surface of the upper plate portion 70. With this configuration, rainwater that runs down the column base 3 flows from the waterproof sheet 10 on the upper plate portion 70 to the waterproof sheet 10 on the upper surface of the waterproof flooring 9, so that it can flow down the waterproof floor to the drain along the water gradient of the outdoor floor, improving waterproofing.

[0038] It goes without saying that the embodiment of the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the scope of the concept of the present invention.

[0039] <First feature> The column base fixing structure which is a first feature of this embodiment comprises a receiving bracket having a fixing portion fixed to the upper surface of the structural frame of the outdoor floor portion formed on the upper floor and an upper plate portion formed horizontally at a distance upward from the upper surface of the structural frame, a lower mounting bracket having a bottom plate portion fixed to the upper plate portion and a rising portion extending upward from the bottom plate portion to receive the column base, a connecting bracket which protrudes downward from the lower end of a column erected on the outdoor floor portion and is connected to the rising portion of the lower mounting bracket, and a waterproof floor material laid on the structural frame, wherein the waterproof floor material has an opening exposing the upper plate portion upward, and a waterproof sheet which covers the opening is formed between the upper plate portion and the bottom plate portion.

[0040] With this, the receiving metal fitting is fixed to the structural frame, the lower mounting metal fitting is fixed to the receiving metal fitting, and the column base is fixed to the lower mounting metal fitting via the connecting metal fitting, so that the column base can be fixed to the structural frame with sufficient strength. Furthermore, the waterproof flooring material is laid on the structural frame with an opening that exposes the upper plate part of the receiving metal fitting upward, and a waterproof sheet that covers the opening is formed between the upper plate part and the bottom plate part of the lower mounting metal fitting, so that the waterproofing of the column base can be ensured with a minimum of sealing.

[0041] <Second feature> The second feature of the column base fixing structure of this embodiment is that, in addition to the first feature, the upper plate portion of the receiving bracket is provided with a fixing hole passing therethrough, a bolt protruding upward is inserted into the fixing hole and welded thereto, and a sealing treatment is performed between the bolt and the fixing hole.

[0042] With this, the bolt is inserted from below toward above into the fixing hole formed in the upper plate portion of the receiving bracket and welded, so that by fixing the bolt in advance and then performing a water-stopping treatment between the bolt and the fixing hole, reliable waterproofing can be achieved, thereby improving workability.

[0043] <Third feature> The third feature of the column base fixing structure of this embodiment is that, in addition to the second feature, the upper surface of the waterproof floor material is formed at the same height as the upper surface of the upper plate portion.

[0044] With this, the upper surface of the waterproof flooring is formed flush with the upper surface of the upper plate, so that the waterproof sheet can be installed flatly to cover the opening in the waterproof flooring, thereby improving waterproofing and ease of installation.

[0045] <Fourth feature> The fourth feature of the column base fixing structure of this embodiment is that, in addition to the second feature, the upper surface of the waterproof floor material is lower than the upper surface of the upper plate portion.

[0046] With this, since the top surface of the waterproof flooring is lower than the top surface of the upper plate, rainwater that runs down the base of the columns flows from the upper plate to the top surface of the waterproof flooring and can flow down the top surface of the waterproof flooring along the water gradient of the outdoor floor to the drain, thereby improving waterproofing.

[0047] <Fifth feature> A renovation method according to a fifth characteristic of this embodiment is a renovation method for replacing an existing waterproof floor material of an outdoor floor section with a new waterproof floor material and replacing an existing column base fixing structure with a column base fixing structure having any of the first to fourth characteristics, and is characterized by comprising the steps of: removing an existing column material erected on the existing waterproof floor material; removing the existing waterproof floor material from the structural frame of the outdoor floor section; fixing the receiving bracket to the structural frame; laying the waterproof floor material on the structural frame so that the upper plate portion of the receiving bracket overlaps the opening; attaching the waterproof sheet to cover the opening; fixing the bottom plate portion of the lower mounting bracket by sandwiching the waterproof sheet between the upper plate portion of the receiving bracket; and connecting a connecting bracket protruding from the lower end of the newly installed column material to the rising portion of the lower mounting bracket.

[0048] According to this, when replacing existing waterproof flooring with new waterproof flooring, the support bracket is fixed to the structural frame, the waterproof flooring is laid so that the upper plate of the support bracket overlaps the opening, a waterproof sheet is attached to cover the opening, and then the waterproof sheet is sandwiched between the upper plate of the support bracket and the bottom plate of the lower mounting bracket is fixed, thereby ensuring waterproofing of the column base with simple construction during renovations. [Industrial Applicability]

[0049] The column base fixing structure according to the present invention is suitable as a column base fixing structure for a column installed on an outdoor floor part such as a balcony of a house and supporting an eaves formed above. [Explanation of symbols]

[0050] 1 Pillar base fixed structure 2 Pillars 3 Pillar base 4 Structural Frame 5 Connecting fittings 7 Bracket 8 Lower mounting bracket 9. Waterproof flooring 10. Tarpaulin 70 Upper plate 72 Fixation part 75 Fixed hole 76 Bolt 80 Bottom plate part 81 Upright part 90 Opening

Claims

1. A method for renovating an outdoor floor by replacing an existing waterproof floor material with a new waterproof floor material and replacing an existing column base fixing structure with a new column base fixing structure, The new column base fixing structure is: A receiving bracket having a fixing portion fixed to an upper surface of a structural frame of an outdoor floor portion formed on an upper floor, and an upper plate portion formed horizontally and spaced upward from the upper surface of the structural frame; a lower mounting bracket having a bottom plate portion fixed to the upper plate portion and a rising portion extending upward from the bottom plate portion to receive a base portion of a column; a connecting metal fitting that protrudes downward from a lower end of a column that is erected on the outdoor floor portion and is connected to the rising portion of the lower mounting metal fitting; A waterproof floor material is laid on the structural frame, The waterproof flooring has an opening that exposes the upper plate portion upward, A waterproof sheet is formed, which is attached so as to cover the entire opening, is sandwiched between the upper plate portion and the bottom plate portion, and has an insertion hole into which a bolt for fixing the upper plate portion and the bottom plate portion is inserted, The upper plate portion of the receiving metal fitting is provided with a fixing hole penetrating the upper plate portion, The bolt protruding upward is inserted into the fixing hole and welded, A sealing treatment is performed between the bolt and the fixing hole, The bolt protruding from the fixing hole of the upper plate portion of the receiving bracket is inserted into the insertion hole formed in the waterproof sheet and the receiving hole formed in the bottom plate portion of the lower mounting bracket, and a nut is fastened from above the bottom plate portion to fix the lower mounting bracket to the receiving bracket. The reform method includes: A step of removing an existing pillar material erected on the existing waterproof floor material; Removing the existing waterproof floor material from the structural frame of the outdoor floor section; Fixing the bracket to the structural frame; laying the waterproof flooring on the structural frame so that the upper plate portion of the receiving bracket overlaps the opening; A step of attaching the waterproof sheet so as to cover the opening; a step of fixing the bottom plate portion of the lower mounting metal fitting by sandwiching the waterproof sheet with the upper plate portion of the receiving metal fitting; A step of connecting a connecting metal fitting protruding from the lower end of the newly installed pillar material to the rising portion of the lower mounting metal fitting; A remodeling method comprising the steps of:

2. The method for remodeling according to claim 1, characterized in that the upper surface of the waterproof flooring is formed at the same height as the upper surface of the upper plate portion.

3. The remodeling method according to claim 1, characterized in that the upper surface of the waterproof flooring material is lower than the upper surface of the upper plate portion.

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