JPS60123655A - Replacement of pillar of handrail - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for replacing the supports of balconies, exterior corridor handrails, rooftop fences, etc. of residential buildings.

[Prior art and issues to be resolved] As a support for a handrail or the like as mentioned above, the base end of the support is buried in a protruding part of the concrete of a building, such as the outer wall of a balcony. There are some that have been installed and fixed, but such supports may need to be replaced due to remodeling or corrosion. In this case, the conventional method is to cut the existing support column leaving a certain height above the concrete surface, fit the new support column into the remaining part, and then fasten and secure both by removing the fastening parts such as bolts and nuts. It is used. However, this method of replacing pillars requires the use of new pillars that are thicker than the existing ones, and the position of the pillar to be removed is specified, so the work must be made to order, and non-standard pillars or pillars must be used. It is not possible to use handrails, etc., and it is expensive.

Furthermore, the corrosion of the existing pillars is significant in the areas where they come into contact with the concrete surface, so the new pillars will have to be fixed to the existing pillars where these areas remain, which poses a problem in terms of strength.

Therefore, in some cases, the concrete was broken, the entire existing support support was removed from the building, and the base end of the new support support was buried.
Fixing them in place is also done, but this replacement method involves breaking the concrete and removing the existing supports, which is difficult.
L is expensive and may be impossible to construct due to its relationship with other parts of the building. In particular, if the thickness of the protruding part to the concrete upper blade is thin, the protruding part of the part where the existing support is buried will be destroyed throughout the thickness direction.
Removing the existing support pillars will be extremely difficult.

[Disclosure of the present invention]

The present invention has been made in view of the above-mentioned circumstances, and it is possible to easily fix a newly installed column without being affected by the thickness, shape, or position of the existing column, and it is possible to firmly fix the newly installed column, while being economical. The purpose of the present invention is to provide a method for replacing a support for a handrail or the like installed on a concrete protrusion that has a step in the vertical direction.

In order to achieve this objective, the method for replacing a post such as a handrail according to the present invention replaces an existing post whose base end is buried and fixed in an upwardly protruding part of concrete with a step in the vertical direction. Cut it from a position that is flat with the surface and attach it to the existing support.
4. A bottom plate with a step in the vertical direction of the bracket above the section.
The bottom plate is supported on the surface of the concrete in a manner similar to the second stage, and the protrusion and protrusion of this concrete]
Insert anchor bolts into the insertion holes formed in each part of the racket, fix the anchor bolts to the concrete around these insertion holes, and use the anchor bolts to complete the racket. 1) Fix the upper and lower parts of the bottom plate to the concrete surface, fit the newly installed struts to the protrusions fixed to the bottom plate ``2'', support them on the bottom plate ``2'', and attach the new columns to the protrusions 1) It is characterized in that it is fastened by removing the fastening part.

Hereinafter, an embodiment in which the present invention is applied to a support for a balcony handrail will be explained with reference to the drawings.

As shown in Figure 1, the existing support column (1) is a box that is embedded and fixed in the outer wall (2d) that protrudes from the concrete floor (+)5) of the balcony (2) in two directions. The proximal end is fixed to a shaped metal insert (]a,).

First, cut the existing support column (1) along the line A-A in Figure 1 by fusing it, and cut the cut section using a σ1 saw in an appropriate manner to cut the side i+! (
Cut it flat with the surface 11 of 2a).

After this upper P1), as shown in FIG.
I) O, k hi 1, 1, (21)) ノIW i' Drill insertion holes (Aa) and (3b) for the anchor bolts near the post (1) using a drilling machine, etc., and insert them (:+a
), (3b), then attach the adhesive anchor bolt (product name: Chemical Anchor) (8a) as described below.
+ Insert (811). In addition, the insertion hole (3J, (
: (b) is arranged 6' so as to correspond to the hole (5J, (51)) drilled in the bottom plate (5) of the bracket (lIt).

The bracket (/1) is shown in Figure 2.
Always install steps - also steel or stainless steel jI7
The upper part (5) of the bottom plate (5) is made of a bent plate.
In the center of C), install two (A) boards made of the same A quality as the bottom plate ((ia)) and stand them upright with (IA) facing the surface.
The lower end of the J plate (6a) is welded to the bottom plate (5), and two plates (31) of the same material and the same thickness are welded to the upper surface of the J plate (3a). In addition, the bottom plate (5) is provided with a hole (5a) in the first step part (5C) and a hole (51) in the lower step part (51). Opposite lower part (5d) of upper part (5a)
At the side end, insert the engaging part (5c) of the positioning rod at right angles to the lower blade.
J〒Bend and form the first step part (5c) to the lower step part (5d)
On the other hand, it is placed upward so as to correspond to the height of the side wall (2a) protruding from the floor (2l).

And the -1 step of the bottom plate (5) of the bracket (4)!
((5c) is supported on the outer wall (2a), the lower part (5d) is supported on the floor (', 2 +)), and the engaging part (5e) is supported on the side wall (2a) K. ) side to engage the bottom plate (
5) Position. From the upper blade to the hole (5a) in the bottom plate (5)
, (51)) through the adhesive type anchor bolt (8a)
, (81)) is inserted into the insertion hole, the liquid synthetic resin agent (92), (9b) of the anchor bolts (8a), (8b) is inserted into the hole. (Anchor body (8c) in original shape, (8d) outer peripheral surface and insertion hole C
(a), (3L)) By letting the synthetic resin agent (ria), (9b) harden between the surrounding concrete, insert the anchor body (8c), (8d) into the insertion hole (3a).
), (3b) are glued and fixed to the surrounding concrete, and the anchor bodies (8c) and (8d) are attached to the side wall (2a) and the floor (2b).
), and the upper ends of the anchor bodies (8c) and (8d) protrude into the concrete. In addition, in this step, insert the synthetic resin agent (Da) and (gb) into the insertion hole C.
(a), (:3b) It is preferable to soak it into the surrounding concrete IJ - synthetic resin agent "")y (!J
l)) Insert the other part of the insertion hole (3r+), (3b) into the upper end opening [overflowing from 1 to the side wall (2a) and the floor (2+)].
, the bottom surface of the bottom plate (5), and the anchor body (8c).
).

(8d) and hole (5a) in bottom plate (5) + (5b) circumference u
'3 No less You may fix one of the legs with adhesive.

Also, during this process, the lower part (5d
) is supported on the floor (21)) through the liner (7) so that the upper part (5c) of the bottom plate (5) is placed horizontally on the surface of the inclined outer wall (2a), and the bottom plate (5) At the second stage section (5C), look over the cut section of the existing support column (1).

After this, the main body of the anchor (8c), (sd
) by tightening the nuts (II) through the washers (1o) to the two ends protruding from the bottom plate (5) of the bracket (4), the bottom plate (5) of the bracket (4) is attached to the side wall (2a) 2+3).

Furthermore, after this process, the newly installed support (12) is fitted into the protrusion (6) of the bracket (4) at the proximal end and supported by the first step (5C) J: of the bottom plate (5). 12)
Remove this support (12) and the protrusion (6) from the - side.Insert washer 04 into bolt 03) which passes through plate (6a) 1'
) to secure the newly installed column (12) to the protrusion (6) of the bracket (4). In addition, the new 1-throw support (12) has a strength section 1111 whose cross section is a rectangular shape by fitting and welding a pair of steel shaped sections 4'A (12a). , 11 cylinders (1-2b) made of an extruded aluminum assembly with a rectangular cross section are attached and fixed around the circumference of this subassembly (not shown). of"
The ends are closed by suitable means.

In this example, as described above, the existing support column (1) is cut from a position flat with the concrete side '+t (2'') of the balcony (2), and the cut portion of the existing support column (1) is cut. The upper part (5a) and the lower part (51) of the bottom plate (5) of the bracket (4) are fixed using the side wall (2a) and the floor (21y), and the upper part (5a) of the bottom plate (5) is ), the newly installed branch (12) is fitted into the protrusion (6) provided above, and the protrusion (6) and the newly installed support post Q2) are fastened together.
The thickness and cross-sectional shape of the protrusion (6) can be made to match the thickness and cross-sectional shape of the new pillar (121), and the thickness and cross-sectional shape of the new pillar (12) can be made equal to that of the existing pillar (f). It is possible to use mass-produced standard products without being affected by

In addition, in this embodiment, the upper part (5c) of the bottom plate (5) of the bracket (4) is not fixed to the side wall (2a) with an adhesive type anchor pole (8;
) (81)
) is fixed to the floor (21)), and the insertion hole (:3a) of the adhesive type anchor bolt (8a) is inserted into the side wall (3a).
2a) does not damage the concrete, and unlike other anchors such as pole-in anchors, which expand at the bottom and can easily damage the concrete, the side wall with a narrow width (2a) In addition to fixing the bracket (4) to the side wall, by using the bottom plate (5) with a step downward and fixing the lower part (5d) to the floor (21), the bottom plate can be attached to the side wall. The bottom plate (5) can be firmly fixed to the concrete of the balcony compared to the case where the base plate (5) is fixed to the concrete of the balcony. In addition, since the floor (2b) has a large area, this floor (21)
) The anchor bolt that fixes the lower part (5d) to the hole-in anchor may be the jth hole-in anchor.

Furthermore, in this embodiment, the bottom plate (5) of the bracket (4)
By engaging the engaging part (5e) provided on the side wall (2a) from the side, the bracket (4) can be easily and accurately positioned in the direction of the inside and outside of the balcony building.

In order to use mass-produced standard products for the handrail components of the newly established branch office (121-Year), we also used the existing pillar (1) and its filler metal (
Ia) Bracket (7I) to avoid position 3j7
) The bottom plate (5) of the existing support (1+) has been adjusted in position to a similar extent, and in this case it is an anchor pole (8a).

(81)) through holes (5a) and (5b) in the bottom plate (5)
It is easier to make adjustments if the holes are made long.

From the above, using the replacement method of this embodiment, it is easy to construct, and used standard products such as the newly installed support column 02 can be used. It's time to replace the handrail, including the bottom plate of the bracket (4).
5) is fixed to both the side wall (2a) and the floor (2b), so the bracket (4) can be firmly fixed.

When replacing handrails, it is possible to install a new branch in the area where there is no existing support by performing the process described above, excluding cutting the existing support. It is also advantageous when installing a new support at another position by cutting an existing support and then filling the hollow part with mortar or the like, or when additionally installing a new support.

Furthermore, in this embodiment, the side wall (2a) is attached to the adhesive type anchor pole (8a), (81)).
, is fixed to the floor (2b), and the new column (12) is fixed to the bracket (4), and the existing column (1) is not used to maintain its strength, so the strength of the existing column is reduced due to corrosion etc. Even if the strength is not sufficient, the newly installed support column (12) can be fixed to the side wall (2a) without any problem in terms of strength.

In the present invention, after cutting the existing pillar, the hollow portion of the remaining part of the existing pillar may be filled with mortar or the like, and then the cut portion of the existing pillar may be covered with the bottom plate of the bracket. Further, in the present invention, if the surface of the bracket supported by the bottom plate of the bracket is horizontal, it is not necessary to use a liner as in the above-described embodiment. Furthermore, in the present invention, the space between the bottom plate of the bracket and the concrete surface is covered with a dead force such as mortar or caulking 41 to improve visibility and prevent water from seeping into the concrete. However, it is preferable to provide a rounded part at the lower corner of the bottom plate of the bracket to prevent danger. It is preferable to cover it with a com or synthetic resin cap to prevent danger.

In the present invention, the order of the steps may be changed from the above-described embodiment, and the bottom plate of the bracket may be fitted to the anchor and supported on the concrete surface at the same time as the adhesive anchor bolt is inserted into the insertion hole.

The above-mentioned embodiments have been explained about the pillars of handrails on balconies, but the present invention can be applied to the handrails of outside corridors, stairs, rooftop fences, garages, clothes drying pillars, etc., where the base end is buried and fixed in a protruding part of concrete. It can be widely applied to replacing existing supports, especially existing metal supports.

〔Effect of the invention〕

- As explained above, the present invention involves cutting an existing support column so that its base end is flush with the surface of the upwardly protruding part of the fixed concrete, and then cutting the bottom plate of the bracket with a step in the vertical direction. Then, cover the cut part of the existing support with the upper part of the bottom plate, attach the step part to the - of the bottom plate [11J, and attach the lower part to the part other than the protruding part, such as the concrete floor, with anchor bolts. By fitting and fixing the new 1-throw support into the protrusion fixed to the upper part of the bottom plate, the support can be replaced easily and economically compared to the conventional method. Since the protruding part of the bottom plate is fixed to a separate part of the part other than the protruding part, the bottom plate can be firmly and reliably fixed, and the newly installed column can have sufficient strength. Increased flexibility in selecting column thickness, shape, and position

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cross-sectional side view showing the fixed state of the existing support column, and FIG. 2 is a partially vertical cross-sectional view showing the fixed state of the new submerged support column replaced by the method of the present invention. FIG. 13 is a cross-sectional view taken along line III-In in FIG. 2. (1)...Il&support, f2)...c/l/ :I
= −, (2a)...side wall, (21))...floor,
(3a), (3b)...insertion hole, (4)...bracket, (5)...bottom plate, (5a), (5b) = one hole, (5C)...] two-stage part , (5d)...lower section,
(6)...Protrusion, (force...liner, (8a),
(81))...Anchor bolt, (9)...Synthetic resin agent, ((0...Nara l-, (12)...Newly established branch, 03)...Bolt, (151...・Natsuto. Patent applicant Fujisash Co., Ltd.

Claims (7)

[Claims] (1) An existing support column whose base end is buried and fixed in an upward protrusion of concrete with a step downward is cut from a position that is flat with the surface of the protrusion, and the top of the cut portion of the existing support is cut. The bracket is covered with the upper part of the bottom plate having a step in the vertical direction, and is supported on the surface of the concrete, which is the bottom plate, and anchor bolts are inserted into the insertion holes formed in the protruding part and the part other than the protruding part of this concrete. The anchor bolts are fixed to the concrete around these insertion holes, the upper and lower parts of the bottom plate of the bracket are fixed to the concrete surface by these anchor bolts, and the newly installed support is attached to the protrusion fixed on the bottom plate. A method for replacing a handrail, etc., characterized in that the newly installed support is fitted to the bottom plate and supported by the bottom plate, and the newly installed support is fastened to the protrusion using a fastening member. (2) According to claim 1, an adhesive type anchor bolt is inserted into an insertion hole in a protruding part of the concrete, and an adhesive type anchor bolt or a hole-in anchor is inserted into an insertion hole in a part other than the protruding part of the concrete. How to replace supports such as handrails. (3) Filling the hollow part of the cut existing support post with a filling material such as mortar, and covering the cut part of the existing support support with the two-step portion of the bottom plate of the bracket (Claim 1) Or the method for replacing supports such as handrails as described in Section 2. (4) A nut is tightened to a portion of the anchor bolt protruding above the bracket bottom plate, and the space between the periphery of the bottom plate and the concrete surface is covered with a cosmetic material such as mortar or caulk to fix the bottom plate. Section ”,
The method for replacing a support for a handrail, etc., as described in paragraph 2 or 3. (5) A method for replacing a post of a handrail or the like as set forth in claim 1, 2, 3, or 4, wherein the hole into which the anchor bolt of the bottom plate of the bracket is inserted is a long hole. (6) The bottom plate of the bracket is supported on the surface of the concrete via a liner, and the upper part of the bottom plate is horizontally fixed on the protrusion table 1aj that is inclined with respect to the horizontal plane of the concrete. A method for replacing a support such as a handrail according to claim 1, 2, 3, 4, or 5. (7) The bottom plate of the bracket has an engaging part of a positioning river that engages with the end face of a concrete protrusion at the end opposite to the lower part of the upper stage, and projects downward.Claim #'l' Claim 1 A method for replacing a support for a handrail, etc., as described in Section 2, Section 2, Section 3, Section 4, Section 5, or Section 6.