JPS6095063A - Replacement of support 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 its problems to be solved]

The base end of the above-mentioned supports such as handrails is generally buried in the concrete of a building and fixed by appropriate means, but such supports may need to be replaced due to remodeling or corrosion. In this case, the conventional method used is to cut the existing support column leaving only a certain height above the concrete surface, fit the new support column into the remaining part, and fasten and secure both together with fastening materials such as bolts and nands. It is being However, this method of replacing columns requires the use of new columns that are thicker than the existing ones, and the installation position of the columns must be specified, so the work must be made to order and handrails other than standard columns or columns must be installed. It is not possible to use other members, 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 the concrete IJ is also done, but this replacement method is difficult to destroy the concrete IJ and remove the existing support, the construction is expensive, and it does not interfere with other parts of the building. In some cases, construction may not be possible due to the following reasons.

[Disclosure of the present invention]

The present invention was made in view of the above-mentioned circumstances, and it is possible to easily fix a new support without being affected by the thickness, shape, or position of the existing support, and the members for fixing the new support can be small, making it economical. The purpose of this invention is to provide a method for replacing supports such as handrails, etc., which does not cause problems in terms of strength.

In order to achieve this purpose, the method for replacing a post such as a handrail according to the present invention involves cutting an existing post whose base end is embedded and fixed in concrete from a position that is flat with the surface of the concrete, and removing the cut end of the existing post. Cover the top of the bracket with the bottom plate of the bracket, support this bottom plate entirely on the surface of the concrete, insert it into the insertion hole formed near the existing support of the concrete, The bottom plate of the bracket is fixed to the concrete surface, the newly installed column is fitted onto the protrusion fixed on the bottom plate and supported on the bottom plate, and the newly installed column is fastened to the protrusion with a fastening member.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a balcony handrail support will be described below with reference to the drawings.

As shown in Figure 1, the existing pillar (1) is connected to the balcony (2).
) The base end is fixed to a box-shaped filler metal (1a) that is firmly embedded in the concrete outer wall (2a).

First, the side wall (2a) is cut by cutting the existing support column (1) along line A-A in FIG.
After this step, as shown in Figure 2, adhesive anchor bolts (product name: chemical anchors) are installed near the existing main pillar (1) of the side wall (2a) using a drilling machine or the like. After drilling 5 tay insertion holes (8) and cleaning the insertion holes (3), as will be described later, attach the anchor body (8a) of the contact type anchor bolt.
f: Insert. Note that the insertion hole (8) is a long hole (5) drilled in the bottom plate of the bracket (4) shown in Figs.
Place it so that it corresponds to a).

In addition, the bracket (4) has two mounting plates (6a) made of thick plates facing each other and standing upright at the center of the bottom plate (5).
The lower end of the mounting plate (6a) is welded to the bottom plate (5), and a top plate (6b) of the same thickness is attached to the upper surface of the mounting plate (6a).
) is welded to form the entire protrusion (6) of stainless steel.

Next to the above-mentioned process, the adhesive type anchor bolt (6) is inserted into the insertion hole (81) from above the long hole (5a) of the bottom plate (5), and the anchor (81) is inserted into the insertion hole (81). )
Liquid synthetic resin agent (9) A cylindrical anchor body (
8a) Adhesively fix the anchor body (8a) to the concrete surrounding the insertion hole (8) by flowing the synthetic resin agent (9) between the outer peripheral surface and the concrete surrounding the insertion hole (3) and curing it. , the anchor body (8a) is attached to the side wall (2a)
The upper end of the anchor body (8a) is made to protrude above the concrete. In addition, in this process, synthetic resin agent (
It is preferable to infiltrate part and all of the synthetic resin agent (9) into the concrete surrounding the insertion hole (3), and let the other part of the synthetic resin agent (9) come out from the upper opening of the insertion hole (3). side wall (2a)
, the bottom surface of the bottom plate (5), and the anchor body (8a
) and at least one of the periphery of the elongated hole (5a) of the bottom plate (5) may be adhesively fixed.

Next to the above-mentioned steps, as shown in FIG. The bottom plate (5) covers the cut portion of the existing support column (1) and aligns the insertion hole (8) with the elongated hole (5a) of the bottom plate (5).

After this step, as shown in FIGS. 2 and 6, the bracket (4 ) is fixed on the side wall (2J surface).

After this step, the proximal end of the newly installed column (121) is fitted into the protrusion (6) of the bracket (4) to support it on the bottom plate (5), and the newly installed column (121) is inserted from one side of the column ( (2
) and the bolt (1B) that passes through the mounting plate (6a) of the protrusion (6). It is fixed to the protrusion (6).The newly installed support column (12a) is a strength member with a rectangular cross section by fitting and welding a pair of steel parts (12a) with a U-shaped cross section. An outer cylinder (12b) made of an extruded material such as aluminum and having a rectangular cross section is fitted and fixed on the outer periphery of this member, and although not shown, the upper end of the newly installed support column ( It was closed by means of

In this embodiment, as described above, the existing support column (1) is cut from a position that is flat with the surface of the concrete side wall (2a) of the balcony (2), and the cut portion of the existing support column (1) is covered with the side wall. Fix the bottom plate (5) of the bracket (4) to (2a), fit the new support post (12) into the protrusion (6) provided on the bottom plate (5), and connect the protrusion (6) to the new support post (12). ), the thickness and cross-sectional shape of the protrusion (6) can be made to correspond to the thickness and cross-sectional shape of the newly installed strut ((2), and the thickness and cross-sectional shape of the newly installed strut (+21) It is possible to use mass-produced standard products without being affected by the existing pillars (1).

In addition, in this embodiment, the bottom plate (5) of the bracket (4) and the fully bonded anchor bolts (8) can be formed at narrow intervals without damaging the Palcorite.
Unlike other anchors such as hole-in anchors, which expand at the bottom end and can easily damage the concrete, the bracket (4) can be fixed even in places where the installation width is narrow. The bottom plate (5) etc. of the can be made smaller.

In order to use mass-produced standard products for handrail components other than the new support support (2), or to use the existing support support (1) and its filler metal (1a
) etc. on the bottom plate of the bracket (4).
5) can be adjusted within the range that covers the cut part of the existing support column (1), and in this case, a long hole (5a) is formed in the bottom plate (5) through which the adhesive anchor bolt (8) is passed, making adjustment easy. .

From the above, when using the replacement method of this example, construction is easy and mass-produced standard products can be used for newly installed supports (flames, etc.), so it is possible to replace or install supports at a lower cost than with conventional methods. The handrails included can be replaced.

When replacing handrails, it is possible to install new columns in areas where there are no existing columns by following the process described above, excluding cutting the existing columns. In the case of arranging a new support, it is also advantageous to cut an existing support and then mortar the hollow part to install a new support in another position, or to add a new support.

Furthermore, in this embodiment, the bracket (4) is fixed to the side wall (2a) with an adhesive type anchor bolt (8), the new support support (flat) is fixed to the bracket (4), and the existing support support (1) is fixed to the bracket (4).
) Since it is not used to maintain the full strength, even if the strength of the existing support is not sufficient due to corrosion etc., the new support can be fixed to the side wall (2a) where there is no 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 concrete surface that supports the entire 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 area between the bottom plate of the bracket and the concrete surface is covered with a decorative material such as mortar or a caulking material to improve the appearance and prevent water from seeping into the concrete. It's okay.

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 described with respect to the pillars of handrails on balconies, but the present invention can also be applied to existing pillars whose base ends are buried in concrete and have a separate surface, such as handrails on outside corridors and stairs, rooftop fences, garages, and clothesline pillars. In particular, it is widely applicable to replacing 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 concrete, and covering the cut portion of the existing support column with the bottom plate of the bracket. By using an adhesive-type anchor bolt to secure the base and fixing the new support by fitting it into the protrusion fixed on the bottom plate, the support can be replaced more easily and economically than with conventional methods. The effect is that the newly installed pillars can have sufficient strength, and the degree of freedom in selecting the thickness, shape, and position of the newly installed pillars in the north direction can be increased.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view showing the fixed state of an existing support column, and FIG. 2 is a partially longitudinal side view showing the fixed state of a new support column replaced by the method of the present invention. figure,
6 is a sectional view taken along the line ■--■ in FIG. 2, FIG. 4 is a plan view of the bracket, and FIG. 5 is a front view of the bracket. . (1)...Existing pillar, (2)...Balcony, (2
a) Side wall, (8) Insertion hole, (4) Bracket, (5) Bottom plate, (5&) Long hole, (6
)...Protrusion, (7)...Liner, (8)...
Adhesive anchor bolt, (9)...Synthetic resin agent, (1
1)...Natsuto, (12)...Newly installed support, (13)
...Hold, (moderate...Natsuto. Procedural amendment (self-effective December 5, 1988) Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of the case 1981 Patent Application No. 201074 2, Invention Name How to replace pillars such as handrails 3, Relationship with the Nagisa case to be amended Patent applicant address name (500) Fuji Sash Co., Ltd. 4, agent 5, date of amendment order procedure amendment document stamp 1980 12 May 12th, Kazuo Wakasugi, Commissioner of the Japan Patent Office1, Indication of the case, Patent Application No. 201074 of 1982, Title of the invention, Method for replacing pillars of handrails, etc.3, Relationship with the person making the amendment, patent issue immediately Person Address Name (500) Fujisash Co., Ltd. 4, Agent 5, Date of amendment order 6, Number of inventions increased from the amendment 7, Claims column of the specification to be amended', 7゛Drawing (Figure 1) ・Ro, (゛・2 to 8, Contents of amendment as per attached sheet (im'J of claims in the specification) 2, Claims (11 The base end is made of concrete) Cut the existing pillars that were buried and separated by plane from a position flush with the concrete surface,
Cover the cut part of the existing support with two bottom plates, support this bottom plate entirely on the surface of the concrete, insert it into the insertion hole formed near the existing support in the concrete, and insert it into the concrete around the JQI hole. The bottom plate of Bracket C is surface-separated on the concrete surface using a cut-out type anchor hole, and the new support column is supported on the bottom plate by joining the protrusion formed on the bottom plate, and the new support column is attached to the surface of the concrete surface. A handrail post replacement method characterized by fastening with a fastening member. (2) The method for replacing a support for a handrail or the like according to claim 1, wherein the bottom plate of the bracket is supported horizontally on the surface of the concrete that is inclined with respect to the horizontal plane through a liner. (8) Claims 1 or 2 of the present invention, in which the hollow portion of the cut existing support column that remains is filled with a filler such as mortar and the cut portion of the existing support column is covered with the bottom plate of the bracket.
Method for replacing supports such as handrails as described in Section 0(4) Tighten the nut on the part of the adhesive anchor bolt that protrudes above the bottom plate of the bracket, and apply a decorative material such as mortar or Claim 1, in which the surfaces of the first plate are divided by cutting with caulking material. The method for replacing a support for a handrail, etc., as described in paragraph 2 or 3. (5) Replacement of supports for handrails, etc. as set forth in Claims 1, 2, 6, 1, or younger ``4'' with key money long holes into which adhesive anchor bolts are inserted in the bottom plate of the bracket. Method.

Claims (5)

[Claims] (1) cutting an existing support column whose base end is buried and fixed in concrete from a position that is flat with the surface of the concrete;
An adhesive type anchor that covers the cut part of the existing support with the bottom plate of the bracket, supports this bottom plate on the surface of the concrete, inserts it into an insertion hole formed near the existing support in the concrete, and fixes it around the insertion hole in the concrete. Pol II
C. Therefore, fix the bottom plate of the bracket to the concrete surface, fit the newly installed column into the protrusion fixed on the bottom plate and support it on the fixed plate, and fasten the newly installed column with the fastening member around the protrusion V. A method for replacing pillars of handrails, etc., characterized by: (2) The method for replacing a support for a handrail or the like as set forth in claim 1, in which the entire bottom plate of the bracket is supported horizontally on the surface of the concrete that is inclined with respect to a horizontal plane via a liner. (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 bottom plate of the bracket, as claimed in claim 1 or 2.
How to replace supports such as handrails as described in section. (4) A patent claim in which a nut is tightened on the part of the adhesive anchor bolt that protrudes above the bracket bottom plate, and the space between the periphery of the bottom plate and the concrete surface is covered with a decorative material such as mortar or a caulking material to completely fix the bottom plate. range 1
Section. The method for replacing the pillars of handrails, etc. as described in Section 2 or Section 6. (5) Features such as handrails, etc. described in paragraphs 1, 2, 3, or 4 of the special feature i. How to replace pillars.