JP6343046B1 - Repair method for the base of a column in a handrail - Google Patents

Abstract

[PROBLEMS] To discharge stagnant water in a fixed column without using a separate water pump, and to repair the base portion of the fixed column without significant heat generation by using a filler for repairing the base of the fixed column. Provide an excellent repair method.
A lower opening 31 is formed at a lower position in the vicinity of the casing 1 of a cylindrical fixed column 10 having a lower portion embedded in the casing 1. The filler C, which is a mixture of an epoxy resin, a curing agent, and an aggregate, is supplied into the fixed support 10 while flowing down from the height of the lower opening 31 and through the lower opening 31. The staying water B is discharged from the lower opening 31 while the filling material C and the staying water B existing in the fixed column 10 are replaced. The filler C is filled up to the lower end position of the lower opening 31. After a predetermined time, when the upper surface of the filler D in the fixed column 10 is sinking below the lower end position of the lower opening 31, the filler C is additionally filled in the fixed column 10.
[Selection] Figure 4

Description

  The present invention relates to a column base repair method for a fall-preventing handrail.

  A fall-preventing handrail fixed to a housing such as a veranda or a balconi has a structure in which an enclosure member composed of a headboard, a lattice material, or the like is attached to a fixed support whose lower portion is embedded in the housing. The portion of the fixed column that is embedded in the housing is usually cylindrical, and this may cause deterioration of the fixed column due to water intrusion into the fixed column during long-term use. Since the fixed support becomes an important member for ensuring the strength of the fall-preventing handrail, it is desired to reinforce it before the deterioration progresses greatly.

  In Patent Document 1, a hole is formed in a lower position of the fixed support column embedded in the housing in order to repair the hollow fixed column in the fall prevention handrail, and from this hole to the lower part of the fixed column. It is disclosed that after the remaining water is extracted by a suction pump, a curable resin is injected from the hole and filled in the lower part of the fixed support column.

  In Patent Document 2, a hole is formed in a lower position of the fixed column whose lower part is embedded in the housing for repairing the hollow fixed column, and the curable resin is passed through the hole to the bottom of the fixed column. By supplying from the vicinity of the bottom wall of the fixed column through a tube inserted deeply into the vicinity of the wall, while replacing the curable resin and the accumulated water remaining at the bottom of the fixed column, What fills curable resin is disclosed.

JP 2005-213740 A (Patent No. 3743721) JP 2009-270401 A (Patent No. 5130565)

  In the thing described in each patent document mentioned above, since the filler filled in the lower part of a fixed support | pillar is curable resin (epoxy resin), it is said that the progress of deterioration will be weakened by substitution with the stagnant water of a fixed support | pillar. Although it can be expected, it cannot be expected to reinforce the lower part of the fixed column, that is, the base. Also, the use of a curable resin as a filler is not preferable because the amount of heat generated at the time of curing increases and the fixed support column expands, causing damage to the casing surrounding it.

  Further, the one described in Patent Document 2 has an advantage that the accumulated water does not have to be discharged by the water absorption pump as compared with that of Patent Document 1, but the curable resin (epoxy) used as the filler is used. The specific gravity of the resin is not significantly different from the specific gravity of water, so that the replacement with the stagnant water is difficult to perform smoothly. For this reason, it is necessary to fill the curable resin considerably slowly, resulting in poor workability. If the filler is rapidly filled, there is a high possibility that a part of the air or the staying water will be entrained. In other words, the hole of the fixed column is blocked by the expanded curable resin.

  In addition to the above, when filling the filler from the vicinity of the bottom wall of the fixed column using a tube passed through the hole of the fixed column, the filling condition of the filler cannot be visually observed. Filling material was overflowing. Also, when pulling out the tube after filling the filler to the specified height, the portion where the tube is pulled out becomes a space, so carefully pull out the tube while filling the space with the filler. Since it is necessary to do this, workability is poor.

  The present invention has been made in view of the above circumstances, and its purpose is to allow the staying water in the fixed strut to be discharged to the outside without using a separate water absorption pump, and to prevent the generation of large heat generation. An object of the present invention is to provide a column base repair method for a fall-preventing handrail that can sufficiently reinforce the base portion of the rail and has excellent workability.

In order to achieve the above object, the following solution is adopted in the present invention. That is,
It is a column base repair method in a fall prevention handrail in which the lower part of the fixed column made cylindrical is embedded in the housing,
A first step of forming a lower hole for a low position in the vicinity of the housing of the fixed support;
A second step of mixing a main agent mainly composed of an epoxy resin, a curing agent, and an aggregate to obtain a filler having fluidity;
By supplying the filler obtained in the second step into the fixed strut while flowing down from the height position near the lower opening through the lower opening, the stagnant water present in the fixed strut A third step of discharging from the lower aperture while replacing the filler with the filler, and filling the filler to the lower end position of the lower aperture;
After the third step, a fourth step of curing the filler filled in the fixed support column for a predetermined time or more,
During the curing in the fourth step, a fifth step of confirming whether the upper surface of the filler filled in the fixed strut has settled below the lower end position of the lower aperture,
When it is confirmed in the fifth step that the upper surface of the filler filled in the fixed strut has settled below the lower end position of the lower aperture, the filler obtained in the second step, A sixth step of additionally filling through the lower aperture to the lower end position of the lower aperture;
After the fifth step or the sixth step, a seventh step of covering the lower opening with a drainage ventilation cap that has air permeability and can drain the water in the fixed support column;
An eighth step of forming an upper opening with respect to the upper portion of the fixed column and setting the outside air to be circulated through the fixed column through the upper hole and the lower hole;
A ninth step of covering the upper opening with a waterproof ventilation cap that has air permeability and prevents water from entering the fixed support; and
With
The filling of the filler in the third step is performed while confirming the filling state of the filler through the lower opening with the tip of the filling nozzle being inserted shallowly into the lower opening.
It is like that.

  According to the above solution, the staying water is discharged to the outside through the replacement of the filler and the staying water, so that it is not necessary to separately use a water absorption pump for draining the staying water. In addition, since the filler contains aggregate, it has a large specific gravity. For this reason, even if the filler is filled from the vicinity of the height of the lower opening, the filler quickly moves downward, so that air and stagnant water are present. Can be gradually deposited on the bottom wall of the fixed strut without being partly wound, and finally the filler can be smoothly filled up to the lower end position of the lower opening. Further, in the above solution method, the filling state of the filler can be visually observed from the lower opening, the amount of the filler overflowing from the lower opening can be reduced as much as possible, and in addition, the filler is passed through the hole of the fixed column. Compared to filling the filler from the bottom wall of the fixed column using a tube, there is no need to consider the problem of voids formed when the tube is pulled out. This is preferable in terms. Furthermore, in the above-described solution method, the amount of heat generated when the filler is cured can be reduced by the amount of the filler including the aggregate, thereby preventing or suppressing the expansion of the fixed strut (heat damage prevention). It also leads to the prevention of the body damage. Furthermore, since the filler has an aggregate, the strength of the base of the fixed column is increased after the filler is cured, and a reinforcing effect can be expected. In addition to the above, when the filler is in a fluid state, it may enter the cracked portion of the housing and the top surface height of the filler in the fixed column may decrease. By additionally filling the filler, it is possible to reliably fill the filler to the lower end position of the lower opening in the cured state (condensation water, rainwater, etc. in the fixed column after repair) Prevention).

Moreover, about the said support | pillar root repair method, after the said 5th process or the said 6th process, it is the 7th which covers the said lower opening with the drainage ventilation cap which has air permeability and can drain the water in the said fixed support | pillar. Since it is equipped with a process , it is possible to discharge the water generated in the fixed column due to condensation or the like through the lower hole while preventing rainwater from entering the fixed column through the lower hole. .

Furthermore , in the base repair method, an upper opening is formed in the upper part of the fixed support, and the inside of the fixed support is set to be circulated through the upper opening and the lower opening. from that it comprises a step, by the fixed post is held in the utmost dry state by outside air is circulated through the upper and lower through-holes in a fixed post, and preferred on preventing or inhibiting corrosion from the inside Become.

Still further, for the strut root repair method, the on opening, from the fact that e Bei a ninth step of lidding waterproof breathable caps to prevent the ingress of water into the fixed within strut with an air-permeable, This is preferable in preventing a situation where rainwater enters the fixed support through the upper opening.
In addition to the above, the filling of the filling material in the third step is confirmed through the lower opening with the filling nozzle being inserted with the tip of the filling nozzle shallowly into the lower opening. Therefore, the amount of the filler overflowing from the lower opening can be reduced as much as possible.

A preferred mode based on the above solution is as follows.
For the strut base repair method, the curing agent is mainly amine-based,
The aggregate is mainly composed of silica,
Can be. In this case, it can be set as the component structure using an easily available general purpose product as a filler.

  According to the present invention, it is possible to discharge the stagnant water in the fixed column without using a separate water pump, and the workability of filling the filler is excellent, and the fixed column is fixed by the filler used for repair. The base portion is not accompanied by large heat generation and expansion, and a reinforcing effect can be obtained.

The figure which shows an example of the fall prevention handrail containing the fixed support | pillar used as the object repaired by this invention. The partial cross section side view which looked at the fixed support | pillar part in the fall prevention handrail shown in FIG. 1 from the side. The figure which shows the state which formed the lower hole in the lower part of the fixed support | pillar from the state of FIG. The figure which shows the state which fills with a filler through a lower opening from the state of FIG. The figure which shows the state which formed the upper opening in the upper part of the fixed support | pillar from the state of FIG. The figure which shows the state which covered the lower opening and the upper opening with the waterproof ventilation cap, respectively.

  In FIG. 1, a fall-preventing handrail A is installed on a casing 1 such as a balconi. The fall-preventing handrail A includes a plurality of fixed columns 10 whose lower portions are embedded in the frame 1 and a surrounding member 20 attached to the fixed column 10. The enclosure member 20 is disposed on the adjacent fixed column 10, and is composed of a headboard 21 and a lattice material 22 in this embodiment. The headboard 21 is stretched over the upper end portion of the adjacent fixed column 10 and is fixed to the fixed column 10 by a fixture. In addition, the lattice material 22 is disposed between the adjacent fixed columns 10 at a position below the headboard 21 and is fixed to the fixed columns 10 by a fixture. In the present embodiment, the lattice member 22 is used for the enclosing member 20, but a panel member may be used instead of the lattice member 22, or the lattice member and the panel member may be used in combination. Further, the enclosure member 20 may be formed by integrally forming the cap 21 and the lattice material 22 or the like.

  As shown in FIG. 2, the fixed column 10 is composed of a core material 11 and a column body 12. The core material 11 is formed in a cylindrical shape from an iron-based metal (in this embodiment, a square tube having a substantially square cross section). The column main body 12 is formed in a cylindrical shape (in this embodiment, a rectangular tube having a substantially square cross section corresponding to the shape of the core material 11) with an aluminum-based metal.

  In the present embodiment, the upper end portion of the core material 11 reaches the position of the substantially central portion in the vertical direction in the column main body 12, and the lower portion of the core material 11 is inserted deeply into the mounting hole 1 a of the housing 1. . On the other hand, the column main body 12 has its lower part slightly inserted into the mounting hole 1 a, but its lower end is positioned above the lower end of the core 11. In addition, the relationship between the length of the core material 11 and the column main body 12 is not particularly limited, for example, the upper end portion of the core material 11 reaches the upper end portion in the column main body 12. Moreover, the core material 11 and the support | pillar main body 12 are integrated with the housing 1 with the mortar 2 etc. which were filled in the attachment hole 1a.

  Next, a method for repairing the fixed column 10 using the method of the present invention will be described with reference to FIG. In addition, the repair object site | part by this invention is shown by code | symbol (alpha) in FIG. Further, in repairing the fixed column 10, in the embodiment, the enclosure member 20 is attached to the fixed column 10. Furthermore, as shown in FIG. 2, it is assumed that rainwater has entered the bottom of the fixed support column 10 before the repair due to many years of use, and stagnant water B exists.

  First, a lower opening 31 is formed by drilling or the like at a low position in the vicinity of the housing 1 in the fixed column 10. A state immediately after the lower opening 31 is formed is shown in FIG. Thus, the lower opening 31 is preferably formed on the side surface (grid material 22 side) of the fixed support column 10.

  Thereafter, as shown in FIG. 4, the filler is injected into the fixed support 10 through the lower opening 31 by, for example, a manual filling nozzle 41. The filler discharged from the filling nozzle 41 is indicated by the symbol C, the filler C flowing down (falling) in the fixed column 10 is indicated by a one-dot chain line arrow, and the filler deposited in the fixed column 10 is This is indicated by the symbol D. As will be described later, the filler C is a mixture of a main agent mainly composed of an epoxy resin, a curing agent, and an aggregate, and has sufficient fluidity and contains an aggregate. It is sufficiently larger than the specific gravity of the conductive resin (epoxy resin).

  The filler C is preferably prepared immediately before being filled into the fixed column 10. That is, the main agent mainly composed of epoxy resin and the curing agent are mixed, and the aggregate is further mixed with this mixture to obtain the filler C. The filler C is filled into the filler nozzle 41. The filler C will be described later.

  When injecting the filler C into the fixed column 10, it is performed in a state where the tip 41 a of the filling nozzle 41 is inserted shallowly into the lower opening 31. At this time. The height position of the tip 41 a of the filling nozzle 41 is maintained at the same position as the lower end position of the lower opening 31 or higher.

  The filler C discharged from the filling nozzle 41 is gradually deposited on the bottom wall of the fixed support 10 through the staying water B. As the filling of the filler C into the fixed column 10 progresses, the water level of the staying water B in the fixed column 10 gradually rises and eventually begins to be discharged from the lower opening 31 to the outside. The filling state of the filler C from the filling nozzle 41 and the discharge state of the staying water B through the lower opening 31 can be easily confirmed visually from the lower opening 31.

  The supply of the filler C is performed until the upper surface of the filler D filled in the fixed column 10 reaches the lower end position of the lower opening 31. A state in which the filler D is filled up to the lower end position of the lower opening 31 is shown in FIG. The total amount of the staying water B is discharged to the outside through the lower opening 31. When the filler C is supplied into the fixed support column 10, since the specific gravity of the filler C is large, the replacement with the staying water B is smoothly performed without entraining part of the air or staying water. Moreover, the filling condition of the filler D can be visually observed from the lower opening 31, and the amount of the filler overflowing from the lower opening 31 can be reduced as much as possible.

  In the state of FIG. 5 in which the filling of the filler D is completed, curing is performed for a predetermined time or longer (24 hours or longer in the present embodiment). After this curing, the filler D is sufficiently cured. During this curing, the filler D filled in the fixed support column 10 penetrates into the cracked portion of the housing 1 when it has fluidity, and its upper surface height position is lower. It may be lower than the lower end position of the opening 31. Therefore, it is confirmed whether or not the upper surface of the filler D filled in the fixed column 10 has settled below the lower end position of the lower hole 31 during curing. For example, the presence or absence of sedimentation on the upper surface of the filler D is confirmed several hours after the filling of the filler D is completed first. When the sinking of the upper surface of the filling material D is confirmed, the filling material C is filled (replenished) into the fixed support column 10 from the filling nozzle 41 through the lower opening 31 by the amount of the height reduction of the filling material D. Thus, the upper surface of the filler D is the lower end position of the lower opening 31.

In the state where the filler D is cured, as shown in FIG. 5, the upper opening 32 is formed in the upper portion of the fixed support 10 by, for example, drilling or the like. Thus, it is preferable that the upper opening 32 is formed on the side surface (lattice material 22 side) of the fixed column 10. Thereafter, as shown in FIG. 6, the drainage vent cap 33 is attached to the lower opening 31, waterproof breathable cap 34 is Ru attached to UeHirakuana 32. Also, the attachment of the drainage vent cap 33 relative to the lower opening 31, to confirm whether the sediment from the lower end position the upper surface of the lower opening 31 of the filler D filled in the fixed post 10, filler If precipitation of the upper surface of D is not recognized, it can be performed at an appropriate timing.

  The drain ventilation cap 33 and the waterproof ventilation cap 34 are formed by using, for example, a short synthetic resin pipe material having a substantially L shape, and an opening on one end side thereof is fitted in each of the through holes 31 and 32. In this case, it is locked and the opening on the other end side is in a downward state. The state of FIG. 6 in which the drain ventilation cap 33 and the waterproof ventilation cap 34 are attached is a state where the reinforcement of the base of the fixed support 10 is completed. In the embodiment, the through holes 31 and 32 have the same diameter, and the vent caps 33 and 34 have the same diameter.

  The ventilation caps 33 and 34 prevent rainwater from entering the fixed support 10. Since the outside air is circulated through the upper and lower through holes 31 and 32 in the fixed column 10, the inside of the fixed column 10 is kept as dry as possible, and corrosion from the inside is prevented or suppressed. Even if water is generated in the fixed column 10 due to condensation or the like, the water in the fixed column 10 is discharged from the lower opening 31 through the drain ventilation cap 33 to the outside.

  Since the filler C contains aggregate, the reinforcing effect of the base of the fixed support 10 is also obtained. In addition, since the filler C includes aggregate, heat generation in the process in which the filler D in the fixed support 10 is hardened can be suppressed accordingly (expansion prevention or suppression of the fixed support 10).

  Furthermore, since the filler C includes an aggregate having a specific gravity larger than that of a conventional curable resin (epoxy resin), when the filler C is filled into the fixed column 10 from around the height of the lower opening 31. As a result, the replacement with the staying water B is surely performed without moving part of the air and the staying water B without moving in and quickly (smoothly) toward the bottom wall of the fixed column 10.

  Furthermore, in the above-mentioned column base repair method, the filling material can be filled more easily than the method of inserting the tube deeply into the fixed column 10 and filling the filler from the vicinity of the bottom wall of the fixed column 10. Become. That is, when filling the filler from the vicinity of the bottom wall of the fixed column 10 using the tube passed through the lower opening 31, the tube is pulled out when the tube is pulled out after filling the filler to a predetermined height. Therefore, it is necessary to carefully pull out the tube while further filling the filler for the space. However, in the present invention, such a work is not necessary, and Since a large amount of the filler D does not overflow from the lower opening 31, the filling work of the filler C and the cleanup after the work are facilitated. Of course, a large device such as a suction pump for removing the accumulated water B is not required.

  The timing for forming the upper opening 32 can be selected as appropriate. For example, the upper opening 32 can be formed during the period of curing the filler D filled in the fixed column 10 (curing period). Effective opening), the upper opening 32 can also be formed immediately before or after the lower opening 31 is formed (improvement of work efficiency by performing two holes at once).

  Here, the filler C is a mixture of a main agent mainly composed of an epoxy resin, a curing agent mainly composed of an amine, and an aggregate mainly composed of silica. The ratio of the main agent and the curing agent can be, for example, the curing agent 1 with respect to the main agent 2 in weight ratio. Moreover, as an aggregate, what mixed the metal oxide of multiple types with respect to this silica which has silica as a main component can be used. As the plurality of types of metal oxides, for example, a mixture of aluminum oxide, iron oxide, calcium oxide, magnesium oxide, sodium oxide and potassium oxide is used. Such aggregate is in the form of fine powder (for example, the particle size is 0.01 μm to 0.03 μm). The ratio of the mixture of the main agent and the hardener and the aggregate can be set to the aggregate 1 with respect to the total of the main agent and the hardener, for example, by weight ratio.

  From the viewpoint of increasing the specific gravity, the ratio of the aggregate to the filler C is preferably 30% or more, and preferably 40% or more by weight. Moreover, since it is difficult to obtain sufficient fluidity when the proportion of the aggregate is too large, the proportion of the aggregate in the filler C is preferably 70% or less, and preferably 60% or less in weight ratio. .

  Although the embodiment has been described above, the present invention is not limited to the embodiment, and can be appropriately changed within the scope described in the claims.

  INDUSTRIAL APPLICATION This invention can be utilized for repair of the fixed support | pillar of the fall prevention handrail installed in the veranda, the staircase, the corridor, the rooftop.

A: Falling handrail B: Stagnant water C: Filler D: Filler deposited in fixed column 1: Housing 1a: Mounting hole 2: Mortar 10: Fixed column 11: Core material 12: Column body 20: Enclosure member 21 : Kasagi 22: Lattice material 31: Lower opening 32: Upper opening 33: Drainage ventilation cap (lower side)
34: Waterproof ventilation cap (upper side)
41: Filling nozzle 41a: Tip of the filling nozzle

Claims (2)

It is a column base repair method in a fall prevention handrail in which the lower part of the fixed column made cylindrical is embedded in the housing,
A first step of forming a lower hole for a low position in the vicinity of the housing of the fixed support;
A second step of mixing a main agent mainly composed of an epoxy resin, a curing agent, and an aggregate to obtain a filler having fluidity;
By supplying the filler obtained in the second step into the fixed strut while flowing down from the height position near the lower opening through the lower opening, the stagnant water present in the fixed strut A third step of discharging from the lower aperture while replacing the filler with the filler, and filling the filler to the lower end position of the lower aperture;
After the third step, a fourth step of curing the filler filled in the fixed support column for a predetermined time or more,
During the curing in the fourth step, a fifth step of confirming whether the upper surface of the filler filled in the fixed strut has settled below the lower end position of the lower aperture,
When it is confirmed in the fifth step that the upper surface of the filler filled in the fixed strut has settled below the lower end position of the lower aperture, the filler obtained in the second step, A sixth step of additionally filling through the lower aperture to the lower end position of the lower aperture;
After the fifth step or the sixth step, a seventh step of covering the lower opening with a drainage ventilation cap that has air permeability and can drain the water in the fixed support column;
An eighth step of forming an upper opening with respect to the upper portion of the fixed column and setting the outside air to be circulated through the fixed column through the upper hole and the lower hole;
A ninth step of covering the upper opening with a waterproof ventilation cap that has air permeability and prevents water from entering the fixed support; and
With
The filling of the filler in the third step is performed while confirming the filling state of the filler through the lower opening with the tip of the filling nozzle being inserted shallowly into the lower opening.
A pillar base repair method for fall prevention handrails. The curing agent has an amine as a main component,
The aggregate is mainly composed of silica,
The support | pillar root repair method in the fall prevention handrail of Claim 1 characterized by the above-mentioned.

Images