JPH0689588B2 - Installation method of handrails to attached buildings such as balconies and balconies - Google Patents

Description

TECHNICAL FIELD The present invention relates to a construction method for attaching a handrail to an attached building such as a balcony or a balcony constructed of reinforced concrete or the like.

[Conventional technology]

Conventionally, to attach a handrail to a balcony, balcony, etc. constructed of reinforced concrete, etc., a hole of an appropriate size and an appropriate depth has been drilled on the top surface of the concrete structure, stone floor, etc., and placed inside the concrete. Make sure that the reinforcing bars exposed in the inner space of the hole, insert the lower part of the pillar of the handrail made of metal such as stainless steel or aluminum into the hole, and keep the pillar in a vertical position. The lower end of the column is fixed to the exposed reinforcing bar by welding, and then mortar is poured into the hole to hide the connecting portion between the lower end of the column and the reinforcing bar.

However, in such a construction method, the welding process and the mortar filling process are troublesome, resulting in a large number of processes and a correspondingly high cost. In addition, when a few months have passed after the construction, cracks were generated in the mortar, and a slight gap was created at the joint between the mortar and concrete, and rainwater entered the structure through the cracks and gaps.
This may cause rust to occur at the welded portion between the lower end of the column and the reinforcing bar, or rainwater may flow along the reinforcing bar inside the concrete and cause leakage of water to the ceiling or wall surface.

In order to eliminate such a defect, for example, the actual development of Sho 59-1908
The construction method disclosed in Japanese Patent No. 25 has been proposed and partially implemented. This method involves inserting the lower part of the handrail post into the hole drilled in the upper surface of the concrete structure, injecting an adhesive into the hole, and applying the adhesive to the space between the inner wall surface of the hole and the outer surface of the lower part of the post. By filling and hardening it, the lower part of the supporting column of the handrail is held by an adhesive and the supporting column is erected. According to this construction method, the welding step and the mortar filling step are completely unnecessary, the construction is very simple, the construction period is shortened, and the cost is reduced. Also, since the adhesive infiltrates the concrete wall surface in a molten state until it hardens, the inner wall surface of the hole and the adhesive are firmly joined and no gap is created between them, and the outer surface of the lower part of the column In addition, since it is firmly bonded and cracks do not occur at all due to the characteristics of the adhesive, it is possible to completely prevent rainwater from entering the construction site.

[Problems to be solved by the invention]

The construction method disclosed in Japanese Utility Model Laid-Open No. 59-190825 has various advantages as described above, but when the adhesive is completely cured, for example, when an epoxy resin is used as the adhesive, It takes 10 to 12 hours and more than 20 hours in winter. In addition, since it takes a long time for the adhesive to harden in this way, it is necessary to support the handrail from both sides using a splint or the like in order to maintain the handrail support columns in a vertical posture until the adhesive hardens. . For this reason, it is necessary to prepare a special material, a frame process is required before the adhesive is injected, and a frame removal process is required after the adhesive is cured, which is extremely complicated and requires extra work. It also costs money.

The present invention has been made in view of the above circumstances, and improves on the construction method disclosed in Japanese Utility Model Laid-Open No. 59-190825.
There is no need to prepare splints to hold the handrail during construction, no complicated frame process or removal process is required, and the amount of adhesive used is small, and the adhesive curing time A technical issue is to provide a method for removing a handrail from an attached building such as a balcony or a balcony, which can be shortened.

[Means for solving problems]

In order to achieve the above object, the present invention is configured to remove a handrail from an attached building such as a balcony or a balcony through the following steps. That is, first, a mounting hole is formed in an upper surface of a floor structure such as a concrete structure or a stone floor forming an attached building such as a balcony or a balcony. Next, after inserting the lower part of the column of the handrail into the mounting hole, insert a plurality of holders such as wedges between the outer peripheral surface of the column lower part and the inner wall surface of the mounting hole to support the lower part of the column from the surroundings. Hold the column in a vertical position. Then, after filling the mounting hole with an aggregate, an adhesive is injected into the void, or after the adhesive is mixed with the aggregate, an adhesive containing the aggregate is injected into the mounting hole. After that, the adhesive is cured over time. By going through each of the above steps, handrails will be attached to the balcony, balcony, etc.

[Action]

Since the present invention is configured as described above, the support of the handrail with the lower part inserted into the mounting hole is provided on the outer peripheral surface of the support lower part and the mounting hole until the adhesive injected into the mounting hole is cured. A plurality of holders, such as wedges, are inserted between the inner peripheral wall surface and the inner peripheral wall surface to support the lower portion from the surroundings and maintain the vertical posture. Further, since the aggregate is filled in the mounting hole before the adhesive is injected, or the adhesive is injected into the mounting hole after the adhesive is mixed with the aggregate, the amount of the adhesive used is small. The amount of the adhesive is small, and since the amount of the adhesive is small and the adhesive enters the gap between the aggregates to increase the area of the interface of the adhesive, the curing time of the adhesive is shortened.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a partial vertical cross-sectional view showing a state in which a handrail is attached to a veranda, a balcony, etc. by the construction method according to the present invention, and FIG. 2 is a vertical cross-sectional view showing a part of the handrail in an enlarged manner.

First, a mounting hole 4 for fixing the pillar 3 of the handrail 2 is bored at a place where the handrail 2 is to be installed on the upper surface of the concrete structure 1 forming an attached building such as a balcony or a balcony. Next, the fixed portion 5 at the lower part of the column 3 is inserted into the mounting hole 4. An annular ring 6 is formed on the fixed portion 5 below the support column 3 to prevent it from coming off. Then, wedges 7 and 7 ′ are inserted between the outer peripheral surface of the fixed portion 5 and the inner peripheral wall surface of the mounting hole 4. These wedges 7 and 7'are fixed parts 5
There are at least two sets around, for example, four sets in front, back, left and right. By hitting the top surface of one of the wedges 7 of each of these four sets of wedges with a hammer through a batten or the like, one side surface of the wedge 7 is pressed against the circular ring 6 of the fixed portion 5 and the wedge 7 ' One side surface is pressed against the inner peripheral wall surface of the mounting hole 4. In this way, the four sets of wedges 7 and 7'are driven one after another, and the fixed portion 5 is firmly fixed and supported from the surroundings, and the column 3 is held in the vertical posture. By this operation, the support column 3 is held in the vertical posture thereafter until the adhesive is cured, which will be described later. The wedges 7 and 7'are formed of, for example, a metal body, a synthetic resin, a piece of wood, or the like. Further, instead of the wedge, as a holder having the same function as described above, for example, an anchor or the like that can be freely adjusted in the width direction may be used.

Next, the aggregate 8 is filled in the mounting hole 4. The aggregate 8 is made of various materials such as salamic, synthetic resin, wood chips, metal bodies, ores, etc., and is formed into particles of various shapes such as spherical, square, and amorphous. After the filling of the aggregate 8, the adhesive 9 is injected into the void portion formed by the wedges 7 and 7 ′ and the aggregate 8 in the mounting hole 4. As the adhesive 9, for example, epoxy resin, acrylic resin, or the like is used. When the aggregate 8 to be used is a minute particle, instead of filling the adhesive into the mounting hole and then injecting the adhesive 9, the aggregate is mixed in advance with the adhesive. Alternatively, an adhesive mixed with the aggregate may be injected into the mounting hole. The closer the spherical shape of the aggregate 8 is to the spherical shape, the smoother the injection of the adhesive, and the better the mixing with the adhesive. Then, the adhesive 9 injected into the mounting hole 4 is cured over time. As in this method, the aggregate is filled in the mounting hole before the adhesive is injected, or the adhesive is injected into the mounting hole after the adhesive is mixed with the aggregate. The amount of adhesive used is less than 1/3 to 1/4 compared to the case where the adhesive is not used, and the amount of adhesive is small and the adhesive enters the gap between the aggregates. Since the area of the interface of is increased, the curing time of the adhesive is shortened. Through the above steps, the handrail is attached to the veranda, the balcony, etc. in the state as shown in FIGS. 1 and 2. Reference numeral 10 in the drawing is a cover plate that covers the opening of the mounting hole 4. Further, instead of the cover plate 10, an adhesive is injected to a depth of about 2 to 5 cm from the upper edge of the mounting hole 4 and hardened, and then, in the space between the upper surface of the adhesive and the upper edge of the mounting hole 4. It may be filled with mortar or the like so as to be flush with the concrete structure.

〔The invention's effect〕

Since the present invention is configured and operates as described above, when attaching a handrail to an attached building such as a balcony or a balcony by the construction method according to the present invention, it is necessary to maintain the handrail pillars in a vertical posture during construction. There is no need to prepare special materials such as splints, no complicated framework process or removal process is required, and the amount of adhesive used is small, and the curing time of the adhesive can be shortened. it can. The present invention provides a method for attaching a handrail to an attached building such as a balcony or a balcony, which has various advantages such that the work is extremely simple, the work time is relatively short, and no extra cost is required. It was possible.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a state in which a handrail is attached to a veranda, a balcony, etc. by the construction method according to the present invention, and FIG. 2 is a vertical cross-sectional view showing a part of the handrail in an enlarged manner. DESCRIPTION OF SYMBOLS 1 ... Concrete structure, 2 ... Handrail, 3 ... Handrail support, 4 ... Mounting hole, 5 ... Fixed part under the support, 7, 7 '... Wedge, 8 ... Aggregate, 9 ... Adhesive.

Claims (2)

[Claims] 1. A step of forming a mounting hole in an upper surface of a floor structure such as a concrete structure or a stone floor of an attached building such as a veranda or a balcony, and a lower part of a supporting rail of a handrail is inserted into the mounting hole to lower the supporting pillar. A step of inserting a plurality of holders such as wedges between the outer peripheral surface and the inner wall surface of the mounting hole to support the lower part of the supporting column from the surroundings and holding the supporting column in a vertical posture, and filling the mounting hole with aggregate. After that, the process of injecting an adhesive into the void and hardening the adhesive is a method of attaching the handrail to an attached building such as a balcony or balcony. 2. A step of forming a mounting hole on an upper surface of a floor structure such as a concrete structure or a stone floor of an attached building such as a veranda or a balcony, and a lower part of the supporting column of the handrail is inserted into the mounting hole to lower the supporting column. After a plurality of holders such as wedges are inserted between the outer peripheral surface and the inner peripheral wall surface of the mounting hole to support the lower part of the pillar from the surroundings and hold the pillar in a vertical posture, after mixing the aggregate with the adhesive A method of attaching a handrail to an attached building such as a balcony or a balcony, which comprises a step of injecting an adhesive mixed with the aggregate into the attachment hole and curing the adhesive.