JP4927389B2 - Handrail for repair and handrail repair system - Google Patents

Description

    The present invention relates to a handrail repair system suitable for repairing handrails in balconies, fences and the like provided with existing handrails whose concrete base is installed, and a repair handrail provided by a handrail repair method selected by this handrail repair system. Is.

  Conventionally, metal materials such as iron and aluminum are frequently used for handrails. These can be made into precise shapes. Suitable for mass production. In the case of aluminum, there are advantages such as an appearance that is particularly excellent in design. On the other hand, for example, the lifetime of a frame such as a reinforced concrete building is about 30 to 50 years. However, the metal material corrodes due to environmental load. Since iron corrodes particularly quickly, it corrodes in a considerably shorter period than the building life.

Therefore, replace the handrail. Inventions such as repairing handrails have been made.
JP-A-57-89053 JP 58-1113459 A JP 57-174574 A Japanese Utility Model Publication No. 58-191233 Japanese Patent Publication No. 7-21237

In the repair handrail construction that is performed by removing all the existing handrails, the existing handrails are removed and new handrails are installed.
The dismantling of the existing handrail is a. Lattice, b. Kasagi and Kasagi receptacle, c. It goes through the process of removing the strut and strut reinforcement. However, this method involves embedding work, particularly c. After that, it takes time and money.

    Therefore, various handrail repair methods shown in the above-mentioned patent documents have been proposed using an old support (existing handrail) as a new support. However, the above proposal attempts to renovate the handrail by removing as much as possible from the existing handrail pillars.

    However, in the case of such a renovation, there are often residents, and even if existing struts are used, the residents are relegated to noise. Moreover, when removing a support | pillar, the subject of how generation | occurrence | production of dust noise is further suppressed and the subject of disposal of concrete waste occur.

    The present invention is a method for installing a new handrail while leaving an existing handrail as much as possible. And even if the existing handrail is old enough to be impossible, it is a construction method that can repair the handrail regardless of the existing handrail. And the handrail for repair used for this construction method is provided. By performing this construction method, the construction period can be shortened, the noise of the cutting machine during column removal can be eliminated, and the cost of dismantling can be reduced.

    In addition, in the case where the existing handrail support is not expected to have a durable life, the present invention is a handrail repair that can install a new handrail by removing the lattice and headboard without removing the existing support. System and repair railing is provided.

    The repaired handrail described in the above-mentioned patent document can be generally summarized as a cover member that is reinforced by covering a supporting handrail column. Such a construction method requires a great deal of cost for the production of the cover member. Moreover, the construction is not always easy.

    Accordingly, another object of the present invention is to provide a handrail repair system and a repair handrail that can be easily repaired to a new handrail in repairing a handrail using an existing support.

    In the present invention, the handrail repair system and the repair handrail are variously provided as described above. In particular, in the present invention, there are a repair handrail and a handrail repair method that can be provided regardless of the state of the existing handrail. Further, the other handrails and handrail repair methods of the present invention are significantly different from the conventional examples.

    Therefore, before the handrail is repaired, the housing and the handrail provided in the housing are diagnosed. Since the present invention provides a completely new handrail, a system that shows the process from the diagnosis of the chassis and handrail to the preparation and construction completion of the construction is new and useful.

    It is an object of the present invention to provide a new and useful handrail repair system.

The first invention according to the present application is a handrail refurbishment system having a support column having a root embedded in a concrete support member and fixed.
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. The stage of deciding to remove the existing handrail completely,
d. Providing a new handrail without removing the existing handrail when it is determined that the existing handrail will be completely removed;
A handrail repair system characterized in that a new handrail is erected at a position different from an existing handrail in the expected direction, and a new handrail post and an existing handrail headboard are fixed.

    The second invention according to the present application is a handrail repair system according to the first invention characterized in that the new headboard that covers the existing headboard and supports the new undercut prevention material is fixed to the new support or the existing headboard. It is.

3rd invention which concerns on this application is a renovation system of the handrail which has the support | pillar which embed | buried and fixed the root to the concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. Deciding not to remove the existing handrail completely,
d. A step of removing the existing railing prevention material when it is decided not to completely remove the existing railing and providing a new railing;
A handrail repair system characterized in that a new handrail is erected at a position different from an existing handrail in the expected direction, and a new handrail post and an existing handrail headboard are fixed.

4th invention which concerns on this application is a repair system of the handrail which has the support | pillar which embed | buried and fixed the root to the concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. Deciding not to remove the existing handrail completely,
d. When it is decided not to completely remove the existing handrail, the stage of the existing handrail, removing the underpass prevention material, leaving the support, and providing a new handrail,
This is a handrail refurbishment system characterized in that a new strut is erected at a position different from that of an existing handrail strut, and the new strut supports a new headboard and a new slip-out prevention material.

  According to a fifth aspect of the present application, the handrail of the fourth aspect of the invention is characterized in that a new handrail support is erected on a line connecting the existing support and the new headboard and the existing support are joined and fixed. It is a repair system.

6th invention which concerns on this application is in the repair system of the handrail which has the support | pillar by which the root was embed | buried and fixed to the concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined to be durable,
b. When it is determined that the strength of the support is durable, it is determined whether repairs other than the support are necessary,
c. The stage where it is judged that refurbishment other than the pillar is necessary,
d. The stage other than the support is removed,
e. A process of providing a bracket on the support column and supporting a new slip-out prevention material with the bracket and new headboard,
It is characterized in that the base of the bracket is fixed to the support, the lower edge of the new punching prevention material is supported at the tip of the bracket, and the upper edge of the new punching prevention material is supported by the new headboard fixed to the support. This is a handrail repair system.

The seventh invention according to the present application is a handrail refurbishment system having a post fixed by burying a root in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined to be durable,
b. When it is determined that the strength of the support is durable, it is determined whether repairs other than the support are necessary,
c. The stage where it is judged that refurbishment other than the pillar is necessary,
d. The stage other than the support is removed,
e. A step of providing a plurality of brackets on each of the columns, and supporting a new punch-out prevention material with the brackets;
A handrail refurbishment system characterized in that the base of the bracket is fixed to the support and a new punch-out prevention material is supported at the end of the bracket.

The eighth invention according to the present application is a modified handrail modified from an existing handrail.
a. An existing handrail that is erected and has an existing support that is embedded and fixed in a concrete frame, an undercut prevention material that is fixed to the existing support, and a headboard that is fixed to the existing support. Handrails,
b. A new support erected on the housing at a position different from the expected direction of the handrail,
c. New slip-out prevention material supported by the new prop,
d. A connecting member of the existing handrail and the new handrail that connects the new prop and the existing headboard,
It is a repair railing characterized by having.

The ninth invention according to the present application at the same position in the horizontal direction along the surface in the expected direction both surfaces provided with existing handrails, the new posts that are respectively erected on the skeleton, are respectively erected on the skeleton The repair handrail according to the eighth aspect of the present invention, further comprising: a strut connecting member that connects and fixes the new struts to each other.

    A tenth invention according to the present application includes a new headboard that covers the new support and the upper part of the existing support and is fixed to the new support and supports the upper part of the new undercut prevention material. This is a modified handrail described in the invention.

The eleventh invention according to the present application is a modified handrail modified from an existing handrail.
a. A member of an existing handrail from which an undercut prevention material has been removed from an existing handrail that is erected, and has an existing support that is embedded and fixed in a concrete frame, and a headboard that is fixed to the existing support, An existing handrail without a slip-through prevention material fixed to an existing support;
b. A new support erected on the housing at a position different from the expected direction of the handrail,
c. New slip-out prevention material supported by the new prop,
d. A connecting member of the existing handrail and the new handrail that connects the new prop and the existing headboard,
It is a repair railing characterized by having.

The twelfth invention of the present application at the same position in the horizontal direction along the surface in the expected direction both surfaces provided with existing handrails, the new posts that are respectively erected on the skeleton, are respectively erected on the skeleton The repair handrail according to the eleventh aspect of the present invention, further comprising: a column connection member that connects and fixes two new columns in the expected direction.

    A thirteenth invention according to the present application is characterized in that it has a new headboard that covers the new strut and the upper portion of the existing strut and is fixed to the new strut and supports the upper portion of the new slip-out prevention material. This is a modified handrail described in the invention.

The fourteenth invention according to the present application is a modified handrail modified from an existing handrail.
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A new support erected on the housing at a position different from the existing handrail,
c. New slip-out prevention material supported by the new prop,
d. Shin Kasagi supported by the new prop,
It is a repair railing characterized by having.

    A fifteenth aspect of the present application is the improved handrail according to the fourteenth aspect, wherein the existing support column and the new support column are coupled and fixed via a new headboard.

    A sixteenth aspect of the present application is the improved handrail according to the fifteenth aspect, wherein the existing strut and the new strut are arranged in a straight line.

According to a seventeenth aspect of the present application, in a modified handrail that is a modification of an existing handrail,
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A bracket that is fixed to an existing column and protrudes in the expected direction;
c. A new slip-out prevention material with a lower edge supported at the tip of the bracket,
d. A new headboard that is fixed to an existing column and protrudes above the upper edge of the new undercut prevention material, and supports the upper edge of the new undercut prevention material,
It is a repair railing characterized by having.

According to an eighteenth aspect of the present application, an improved handrail is a modified handrail,
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A plurality of brackets that are fixed in the vertical direction on the existing support columns and project in the expected direction,
c. A new punch-out prevention material whose lower edge is supported at the tip of the lower bracket and whose upper portion is supported by the upper bracket,
It is a repair railing characterized by having.

    The problem to be solved is the environmental load that a great deal of labor and work exert on the surroundings to remove the existing handrail. It is also to increase the effective options for handrail repair.

    The best mode for carrying out the invention is shown in Example 1 described later.

    In the following description, the useful life refers to the physical useful life and does not include the concept of the legal useful life.

    In the following description, the term “prevention material” refers to a member provided in a range surrounded by panels such as a grid, a glass plate, a metal plate, and the like with parallel railings, braces, flats, and slats, and headboards. The through-hole preventing material has a function of preventing a person from passing through, but there are also materials having functions of reinforcing a handrail, shielding the outside of the room from outside, and a design.

    First, the overall structure of the handrail repair method (handrail repair system) will be described. The cause of the handrail renovation is due to aging of the handrails or design changes such as wanting the lattice to be glass.

    FIG. 1 is a flowchart of an embodiment of a handrail repair system. First, in step S1, the body is diagnosed. This diagnosis determines how long the remaining expected life of the building's enclosure is. Then, it is determined whether or not there is a remaining expected useful life, and if it is determined that there is no remaining expected useful life or that the remaining useful life is small to the extent that it is not worth building renovation, the process proceeds to step S-1.

    In step S1-1, it is determined whether or not to repair the handrail. In this case, even if the handrail has a short service life, Example 5 or 6 is employed when the handrail support is durable, otherwise the handrail is left without modification and terminated.

    If it is determined in step S1 that there is a remaining estimated useful life of the chassis, a handrail diagnosis is entered, and the process proceeds to step S2.

    In step S2, the state of the handrail is diagnosed. In step 2, it is diagnosed whether the handrail is sufficiently strong to withstand use.

    In step S2, when the strength of the support is judged and it is estimated that the durability is the limit due to the corrosion or damage of the support, or even if the support is reinforced, the durability period is slightly extended and the remaining durability period is required for reinforcement. If the cost is not met, the process proceeds to step S3. If it is determined in step 2 that the strut strength is durable enough, it proceeds to step S2-1.

In step S2-1, it is determined whether or not the portion other than the handrail support is required to be repaired. Here, the necessity of renovation is judged according to the degree of damage to the lattice and headboard, the remaining durable years, or the desire to change the design. Here, the damage to the lattice and headboard includes those in terms of strength and aesthetics. That is, although it has strength, it bends, and scratches on the surface are considered to be included in the damage. If it is determined in step S2-1 that no repair other than the support is necessary, the handrail is not repaired.

    If it is determined in step S2-1 that repair other than the column is necessary, the process proceeds to step S2-2.

    In step S2-2, whether or not according to the present invention is selected. When handrail repair is performed according to the present invention, the process proceeds to step S2-3. When the handrail is not modified according to the present invention in step S2-2, the conventional construction method is used. Here, according to the conventional construction method, repairing damaged members such as headboards and lattices, repairing by replacement of members or removing the headboards and lattices, leaving only the pillars, for example, the method shown in the above-mentioned patent document is adopted. The

    In step S2-3, it is determined whether or not the existing handrail is to be completely removed. Example 1 or 2 or 7 is selected if it is performed without complete removal. When it is not performed without complete removal, Example 5 or 6 is carried out using the existing struts after removing the lattice and headboard.

    If it is determined in step S2 that the existing strut has no durable strength, in step S3 whether to reproduce the handrail with the construction method to which the present invention is applied or whether to completely remove the handrail by the conventional construction method. to decide. If the handrail is reproduced by the handrail repair method by the conventional method, the handrail is completely removed.

    When the handrail repair work of the present invention is performed in step S3, the process proceeds to steps S4 and S5.

    If it is determined in step S4 that the handrail repair according to the present invention is performed, the process proceeds to step S5.

    In the case where the handrail is completely removed in step S5 (the existing handrail is left as it is), the construction is performed in the embodiment 1, 2 or 7 of the present invention.

    If it is not completely removed in step S5, the process proceeds to step S6.

    In step S6, it is selected whether to remove only the lattice portion. If only the lattice portion is removed in step S6, the construction is performed in the third embodiment of the present invention. When not only removing the lattice part but also removing the headboard, only the support is left and the process proceeds to step S7.

    In step S7, it is selected whether to use an existing support. If it is selected in step S7 that an existing support is used, a conventional method of reinforcing the existing support with a cover member is employed. The conventional construction method is, for example, the construction method shown in the above-mentioned patent document. If it is selected in step S7 that the existing support is left but this support is not used as a support for the new handrail, the handrail is repaired in the fourth embodiment of the present invention.

    In the above description, an example of a lattice is given as the through-hole prevention material. However, the present system is similarly applied to a panel or the like.

(Explanation of handrails that have been installed conventionally)
As shown in FIG. 3, the handrail shown as a whole by the code | symbol 1 has the fastening member which fastens the support | pillar 2, the grating | lattice 3, the coping 4 and these members mentioned later, and unites them. Here, it replaces with the grating | lattice 3, and glass, a nonflammable board | plate material, for example, a thin steel plate etc., is used as a board | plate material. In this specification, any one of the lattice and other plate materials is referred to as a through-hole preventing material.

    The struts 2 are erected on the outer edge 5 after being embedded in the outer edge 5 of the concrete of the veranda having a plurality of housings at intervals and being solidified with concrete or other adhesive. Here, the veranda is reinforced concrete integrated with the outer edge 5.

    As shown in a cross section in FIG. 5, the column 2 includes a main material 6 and a core material 7. The main material 6 of the column is a hollow cylinder having a square cross section, and a tapping hole at the inner corner (a groove or a circular shape with a central angle of about 270 degrees in the cross section, and the diameter of the inscribed circle of the groove at the mouth) (The same applies hereinafter) 6a. A hollow cylindrical core member 7 having a circular cross section is inserted so as to be in contact with the two protrusions 6c provided inside the central portion of each side 6b of the main member 6. The main material 6 and the core material 7 are fastened by driving a blind rivet 11 into a hole penetrating the main material 6 and the core material 7. The position of the rivet 11 is between the two protrusions 6c at the center of one of the sides 6b.

    This material 6 is an aluminum extrusion mold material. The core material 7 is made of stainless steel. As shown in FIG. 4, the core member 7 protrudes downward from the lower end of the main member 6, and the entire protruding portion is embedded in the outer edge 5. The upper end of the core member 7 has the same height as the vicinity of the lower rail 3 b of the lattice 3. The lower end of the main material 6 is in contact with the upper surface 5 a of the outer edge 5, and the upper end is a mold material having the same cross section up to the headboard receiver 15.

    The lattice 3 has a lattice receiver 3a, with both ends of a balustrade 3c extending in the vertical direction between the lattice receiver 3a horizontally mounted on the upper portion and the lower rail 3b horizontally mounted on the lower portion. The balustrade 3c is caulked to the lower rail 3b and fastened by welding or the like. Both ends of the lattice receiver 3a are positioned slightly apart from the end portions of the cap support 15 provided on the adjacent support columns 2 and are shifted upward with respect to the cap support 15 (see FIG. 6). The lower rail 3b has a length extending between the adjacent columns 2. As shown in FIG. 7, in the lattice receiver 3a and the handrail 3c, a tapping screw 16 inserted through the lattice receiver 3a is screwed and fixed into a tapping hole 3c-1 (see FIG. 5) of the handrail 3c. In the lower rail 3b, a tapping screw (not shown) inserted through the lower rail 3b is screwed into the tapping hole 3c-1, and the handrail 3c is fixed. The handrails 3c are arranged in parallel with an interval at which a person or the like cannot pass.

    The construction of the existing handrail 1 is as follows. The core material 7 is inserted into the hole 5 f provided in the outer edge 5, and mortar or an adhesive is filled between the hole 5 f and the core material 7. After the mortar or adhesive is solidified, the main material 6 is inserted into the core material 7. At this time, the round base 8 is inserted from the lower end of the main material 6.

    When the support column 2 is erected on the outer edge 5, the round base 8 is first seated on the outer edge 5 as shown in FIG. 4. The round base 8 is made of nylon (registered trademark). The round base 8 has a circular outer periphery and a hole having substantially the same cross section as the outer shape of the main member 6 of the support column 2 at the center.

    Next, the cap holder 15 is attached to each column 2.

    FIG. 6 is a front view showing attachment of the handrail end portion to the frame upright surface portion 5b. About the structure which attaches the head 4 to the support 2 via the head support 15, it is the same also about the intermediate support 2 other than the illustration close to the frame upright part 5b. FIG. 7 is a cross-sectional view of the upper portion of the handrail cut along a vertical plane in the expected direction. The lower surface of the cap board receiver 15 is in contact with the upper end of the column 2. The middle part of the headboard 15 is in contact with the upper end of the column 2 and protrudes along the headboard 4 on both sides in a limited manner. Any of the headboard receptacles 15 is fixed to the pole 2 by a tapping screw 9 that is inserted into the headboard holder 15 after being in contact with the upper end of the pole 2 and screwed into the tapping hole 6a (see FIG. 5) of the pole 2. ing. The tapping screw 18 for inserting the headboard receiver 15 is screwed into the lower member 4 c of the headboard 4, and the headboard receiver 15 is fixed to the headboard 4.

    FIG. 7 is an enlarged view of the upper part of FIG. The cross section of the lattice receiver 3a is as shown in FIG. 7, and the lattice receiver 3a has a shallow groove shape and is fitted into a recess 4d recessed upward in the center of the lower member 4c of the headboard 4 with the groove side up. ing. The lattice receiver 3a and the headboard 4 are fastened by screwing the tapping screw 17 into the lower member 4c of the headboard 4 through the lattice receiver 3a.

    As shown in FIGS. 4 and 5, the lower rail 3 b is fixed to the main column 6 through angle brackets 13. That is, the main member 6 and the bracket 13 are fastened by the blind rivet 12 with one flange of the bracket 13 abutting against the main member 6. The lower beam 3 b is placed on the other flange of the bracket 13, and the lower beam 3 b and the other flange are fastened with a machine screw 14.

    The headboard 4 is made of a hollow aluminum extruded mold having an arc-shaped top surface whose section is convex upward. The headboard 4 is laid across the space between the left and right facing elevations 5b as viewed from the interior of the veranda. As for the cap 4, there are a case where a single piece of an extruded aluminum material with no joint is used and a case where the end face is abutted. When the end faces are to be abutted, they are abutted so as to coincide with the center of the column 2.

    As shown in FIG. 7, the head member 4 is provided with a recess 4 d so that the lower member 4 c between the side plate parts 4 b on both sides faces upward and does not interfere with the tapping screw 16.

    As shown in FIG. 6, the cap holder 15 extends so as to protrude from the support column 2 to both sides. Although not shown, in the middle support 2, the head rest 15 is similarly protruded on both sides of the support 2.

    After the headboard receiver 15 is mounted on the support column 2, the fitting portion 4 a of the headboard 4 is fitted along both edges of the headboard receiver 15. Accordingly, the lower member 4c between the upper surface 15a of the headboard receiver 15 and the fitting portions 4a on both sides of the headboard comes into contact. Next, as shown in FIG. 6, at a position where the headboard holder 15 is located outside the column 2, the headboard holder 15 is inserted from below to screw the tapping 18 into the lower member 4 c of the headboard 4. Conclude. Next, one grid 3 is attached between adjacent columns 2. The grid 3 is slightly tilted from the vertical state, and the grid support 3a is fitted into the recess 4d of the headboard 4, and the lower bar 3b is moved in the seeing direction so that the lower bar 3b is placed on the bracket 13 in a fast manner. Then, the machine screw 14 is inserted into the bracket 13 through the lower beam 3b. Further, the tapping screw 17 is screwed into the lower member 4c of the headboard 4 through the lattice receiver 3a.

    As shown in FIG. 6, the handrail 1 is attached to the vertical surface portion 5 b by fixing the headboard 4 to the vertical surface portion 5 b via the bracket 19 in this example. As shown in FIG. 6, one flange of an angle bracket 19 having exactly the same width is inserted into the fitting portion 4a (see FIG. 7) which is a wide groove of the headboard 4, and the other flange is used as an upright portion. 5b.

    Then, one flange of the bracket 19 is inserted from the bottom to the top, and the bolt 21 is screwed into a pop nut 22 (see FIG. 6) fixed to the lower member 4c of the headboard 4 so that one end of the bracket 19 is fixed to the headboard 4. . One pop nut 22 is provided at the center of the width of the headboard 4 in the expected direction. The other flange of the bracket 19 is brought into contact with the vertical surface portion 5b, and the other flange is inserted to fix the anchor 23 to the vertical surface portion 5b. The anchor 23 fixes the bracket 19 to the vertical surface portion 5b. is there. An end cap 4 </ b> A is fitted into the end of the cap 4. The end cap 4A has a shape in which the end portion of the cap 4 is just fitted inside. The end cap 4A is fixed to the headboard 4 by a blind rivet 4f that passes through the end cap 4A and the side plate portion 4b of the headboard 4.

In the above description, the attachment of the handrail to the chassis is an elevation wall, but the attachment of the end of the handrail to the chassis is performed according to the form of the chassis. And the attachment member to the housing of a handrail can be unitized, and a handrail can also be attached to a housing.
[Example 1]

    The first embodiment is a handrail repair method in which the existing handrail is completely removed without removing the strut strength in step S2 in the handrail repair system. This is executed when an active determination is made in step S5 (when the strut strength is not strong) in the flowchart. In addition, in the case where the strength of the support is provided, the first embodiment may be executed when it is determined in step S2-3 that the existing handrail (repair other than the support is necessary) is completely removed.

    FIG. 8 shows a cross section in the expected direction of the modified handrail. FIG. 9 is a horizontal sectional view of FIG. The explanation will be explained in the order of the process so that the understanding of the completed repair handrail will be covered.

    As shown in FIG. 8, construction is performed in which the angle-shaped base 24 that contacts the upper surface 5 a and the inner and outer side surfaces 5 c of the outer edge 5 is attached to the outer edge 5.

    First, a base bolt hole is drilled on the upper surface 5a side of the outer edge 5 on the base 24 in accordance with the position of the bolt hole 24b that is previously drilled in the flange 24a of the base 24. At this time, it is preferable to drill the basic bolt hole using a bolt hole 24b or a jig fitted to the bolt hole 24b.

    An anchor 25 is inserted into a hole formed in the upper surface 5a of the outer edge 5 through the bolt hole 24b, and the anchor 25 is fixed to the hole. This anchor 25 is a well-known one, and when the nut screwed into the male screw protruding out of the hole is called in, the anchor 25 expands in the hole, or the anchor expands in the back by striking the core material. Any of these may be used. As a result, the base 24 is fixed to the outer edge 5.

    On the flange 24a of the base 24, a lower end of a hollow cylindrical core member 26 is fixed in advance by welding. Here, the base 24 and the core member 26 are made of stainless steel. Accordingly, when the base 24 is fixed to the outer edge 5, the core member 26 is erected. The position of the core member 26 is close to the existing support 2 as shown in FIG. 9. In other words, the existing handrail 1 is at the approximate center of the width of the outer edge 5 in the expected direction, and the core member 26 is erected at the symmetrical position or substantially symmetrical position on both sides of the existing handrail 1 in the expected direction.

    New columns (called new columns) 27 and 28 having a hollow square cross section are inserted into the core member 26. This fitting is a fitting of a static degree. In other words, the fitting tolerance between the inner rectangle of the new support columns 27 and 28 and the outer diameter of the core member 26 is about a static fit. The new struts 27 and 28 are made of an aluminum extrusion mold material or stainless steel material. In the case of an aluminum extrusion mold, tapping holes are provided at the four corners (not shown) in the same manner as the existing support 2. A blind rivet (not shown) is driven from the center of one side of the new pillars 27 and 28 toward the center of the core member 26 so that the new pillars 27 and 28 do not come out of the core member 26.

    As shown in FIG. 8, the upper ends of the new columns 27 and 28 may be equal to or substantially equal to the height of the existing columns 2. A connecting tool 29 is used to connect the headboard 4 and the new columns 27 and 28. One flange of the angle-shaped connector 29 abuts on the upper ends of the new columns 27 and 28, and the other flange abuts on the side plate portion 4 b of the existing headboard 4. Then, one flange of the connector 29 is fixed to the upper ends of the new columns 27 and 28, and the other flange is abutted against the headboard 4 and fixed.

    When one of the flanges 27 and 28 is an aluminum extrusion die, the tapping screw that passes through the one flange is screwed into the tapping hole of the new pillars 27 and 28. Done. If the new struts 27 and 28 are made of stainless steel, one flange of the connector 29 is fixed to the upper ends of the new struts 27 and 28 by welding, or, for example, a rectangular fitting protrusion provided on the one flange is provided. It is inserted and fixed inside the new columns 27 and 28. The other flange of the connector 29 is screwed and fixed to a pop nut (not shown) in which a machine screw 30 inserted through the other flange is fixed to the side plate portion 4 b of the headboard 4.

The new support 27 and the new support 28 are connected to each other after or before the head 4 and the new support 27 and 28 are joined to the existing support 4. In this connection method, a column connecting member 31 having the same length as the interval between the opposing surfaces of the new columns 27 and 28 is inserted into the connecting portion, and both ends of the column connecting member 31 are brought into contact with the opposing surfaces of the new columns 27 and 28. The screw member 32 is screwed into the column connecting member 31 by inserting through a hole for a small screw that has been opened in advance across the new columns 27 and 28. Here, the column connecting member 31 is provided with a female screw or a tapping hole in the longitudinal direction from its end face. In the case of a female screw, the screw member 32 is a small screw and is screwed into this female screw. When the hole provided in the column connecting member 31 is a tapping hole, the screw member 32 is a tapping screw and is screwed into the tapping hole. Naturally, the position of the column connecting member 31, that is, the positions of the new columns 27 and 28 are between the handrails 3c when viewed from the inside and outside. That is, the connecting member 31 passes through a position where the handrail 3c is not present. When the existing handrail is not a lattice but a panel is provided at the position of the lattice, a hole through which the column connecting member 31 can be inserted is provided in the panel.

    Next, the bracket is attached to the new support 28 on the outside. The bracket includes an upper bracket 33 on the side close to the headboard 4 and a lower bracket 34 on the side close to the base 24. Except for the bottom of the lower bracket 34, the brackets 33, 34 have the same horizontal cross section.

    As shown in FIG. 10 in which a part of FIG. 9 is enlarged, the brackets 33 and 34 are provided with stay portions 33b and 34b whose plate surfaces are perpendicular to the center of the bottom plates of the groove-shaped portions 33a and 34a into which the new support 28 fits. is there. Flange 33c, 34c parallel to the wall surface is provided at the tip of stay portions 33b, 34b.

    As shown in FIGS. 8 and 10, the lower bracket 34 has a bottom 34 d. The bottom 34d is integrally provided over the lower ends of the stay 34b and the flange 34c. The bottom 34d has a horizontal plate shape, and a rib 34e parallel to the flange 34c is provided on the bottom 34d. The upper bracket 33 has flanges 33e parallel to the wall surface extending from the stay portion 33b to both sides in the direction along the wall surface. The height of the flange 33e is equal to the total height of the upper bracket 33.

    The lower bracket 34 is an integral part having a groove 34a, a stay 34b, a flange 34c, a bottom 34d, and a rib 34e. When the upper bracket 33 is an aluminum extrusion mold, the bottom 34d may be welded to the mold to form the lower bracket 34. Further, the lower bracket 34 can be integrally formed by aluminum die casting. The upper bracket 33 is made of aluminum die cast or aluminum extrusion mold material.

    As shown in FIG. 10, the brackets 33, 34 are respectively fitted with the groove portions 33 a, 34 a from the outside to the new support 28, and the holes of the groove 33 a, 34 a, the holes of the new support 28, and the core material 26 (lower bracket 34). The new support 28 and the brackets 33 and 34 are fixed by the through bolts and nuts 35, respectively. The bolt 35a of the through bolt nut 35 has a cylindrical portion 35b whose length below the neck is equal to the outer rectangular dimension in the groove width direction of the groove portions 33a, 34a, and a male screw portion 35c whose diameter is reduced from the cylindrical portion 35b. The nut 35d is screwed into the male screw portion 35c.

    A through-hole preventing material 36 such as a panel or a glass plate is fitted into brackets 33 and 34 fixed to the adjacent new columns 28 and 28. The undercut prevention material 36 has a height of about 1040 millimeters, for example. With the undercut prevention member 36 held vertically, the flanges 33c and 33e of the left and right upper brackets 33 and 33 are inserted and lowered from the lower edge 36a side to lower the lower edge 36a and the flange 34c and rib 34e of the lower bracket 34. It fits in between and is seated on the bottom 34d. Then, a wedge (not shown) is inserted between the upper edge 36 b side of the under-hole prevention material 36 and the new support 28, and the upper edge 36 b side of the under-hole prevention material 36 is pressed against the flange 33 c of the upper bracket 33. Note that the flange 33e of the upper bracket 33 may be omitted when the upper portion of the through-hole preventing material 36 is fixed with a wedge.

    At the position where the side edge 36c of the undercut prevention member 36 is close to the vertical surface portion 5b, the base 24 is fixed to the outer edge 5 in the immediate vicinity of the vertical surface portion 5b, and the new columns 27 and 28 are inserted and fixed to the core material 26. After fixing the new struts 27 and 28 to the existing headboard 4 and connecting the new struts 27 and 28 with the pillar connecting material 31, the brackets 33 and 34 are fixed to the new strut 28. The brackets 33 and 34 support the through-hole preventing material 36. That is, the overall process of erecting the new columns 27 and 28 close to the elevation surface portion 5b is the same as the process of erecting the new columns 27 and 28 serving as intermediate columns. The width in the direction along the wall surface (finding direction) of the base 24 to which the new struts 27 and 28 provided close to the upright portion 5b are attached is appropriately larger than the width of the base 24 to which the new struts 27 and 28 in the middle portion are attached. It may be small.

    FIG. 11 is a front view of the completed handrail of the first embodiment when viewed from the indoor side.

    As described above, according to the first embodiment, a new handrail can be provided over an existing handrail even if the existing handrail is completely removed regardless of the strength of the existing handrail support. It was.

Since the new columns 27 and 28 are erected in parallel in the expected direction and the lower ends are fixed to the housing, and the upper ends of the new columns 27 and 28 are rigidly connected to the existing headboard 4, the new columns 27 and 28 In addition, the strength is high. Further since the coupling of the new posts 27, 28 at the pillar connecting member 31, the strength of the struts together new posts 27 and 28 is extremely large rigidity excellent. Accordingly, even if a person leans on the headboard 4 and the existing support 2 cannot or cannot withstand this load, the support 4 is supported by the new support 27 and 28. The new struts 27 and 28 are rigid and strong because the two in the expected direction receive the load.

    Also, there is no dismantling of existing handrails. Therefore, the man-hour for dismantling the existing handrail is zero. And also when newly installing, the process added to a housing only fixes the base 24 to the outer edge 5 with the anchor 25. FIG. Therefore, the anchor 25 can be attached easily and in a short period of time with almost no dust generated by simply drilling the outer edge 5 with a power tool in which a concrete drill is vertically mounted. Therefore, unlike existing support columns that are erected using mortar or adhesive, it is not necessary to wait for curing. This also means that even when a resident is in a residence having a veranda for constructing a new handrail, the construction time is short, so there is almost no burden associated with construction for the resident.

    Also, even if the existing handrail struts are durable and near the limit of use, the existing handrail struts will not be removed, so when removing the existing handrails, the outer edges around the base of the struts are crushed and removed with a concrete breaker. There is no dust or noise generated. In addition, according to the method of cutting the support column at the time of removal, the noise associated with the use of the cutting machine can be eliminated. In addition, there is very little waste generation.

According to the first embodiment, the main effects are as follows.
(1) There is no cost and time for dismantling existing handrails.
(2) Since the existing handrail is left as it is, there is no noise when cutting and removing the existing handrail. (3) The handrail has a new design.
(4) Work from the veranda side is possible and installation of a scaffold is not required.
(5) The amount of industrial waste is reduced.
(6) Even if the strength of the existing handrail support is not expected to be durable, the existing support is supported by the new support, resulting in the reinforcement of the existing support and the support of the existing support and lattice. Will be secured.
(7) Since the work is performed in a state where there is an existing handrail, it is easy for the worker to work psychologically in repairing the handrail of the veranda on the higher floor.

    In the first embodiment described above, the upper ends of the new columns 27 and 28 are fixed to the headboard 4 first, and then the new columns 27 and 28 are connected by the column connecting member 31, but this order is reversed by the column connecting member 31. After connecting the columns 27 and 28, the upper ends of the new columns 27 and 28 may be fixed to the headboard 4.

    Although the brackets 33 and 34 are attached to the new support 28 at the site, they may be attached in advance at a handrail manufacturing factory or a contractor's office.

    Moreover, you may attach the new support | pillars 27 and 28 and the existing headboard coupling tool 29 to the new support | pillars 27 and 28 previously at a handrail manufacturing factory or a business establishment such as a contractor.

    Further, the column connecting member 31 may be attached in advance to either the new column 27 or 28 at a handrail manufacturing factory or a business establishment such as a construction company.

    As described above, the construction period (subassembly) at the handrail manufacturing factory or the construction site of the contractor can be shortened in advance.

    In the above description, the through-hole preventing material 36 is solid with glass, a panel or the like, but may be a lattice. In the case of a lattice, a lattice lattice type in which a lattice receiver and a lower beam are coupled by a balustrade can be used. In the case of glass used in place of a panel, a groove-shaped strip is fitted into at least the upper edge and the lower edge. It is preferable to use a metal material such as stainless steel, plated iron material or brass material as the material of the groove-shaped strip material.

    When the undercut prevention material 36 is a glass plate, the glass plate may be held by the glazing bead by locking the glazing bead to the bracket where the underpass prevention material 36 is supported by the bracket (see Example 3 described later). The portion of the glass plate supported by the bracket may be filled with a sealing agent that retains elasticity after curing.

The first embodiment is important as a construction method selected in the handrail repair system shown in FIGS. However, as a refurbished handrail, it can be constructed in either case, even if the existing handrail is completely removed (the removed headboard is used), partly removed or not removed.
[Example 2]

    In Example 2, the upper edge of the existing headboard and the penetration prevention material in Example 1 is covered with a single headboard. FIG. 12 is a longitudinal sectional view in the expected direction of the second embodiment and shows the upper part of the handrail.

    As shown in FIG. 12, the width of the new headboard 37 is larger than the distance between the inner side surface (the surface facing the room) of the new column 27 and the outer side surface of the slip-through preventing member 36. Further, the new headboard 37 protrudes from both sides of the through-hole preventing material 36 from the new support column 27 on the inner side. The new headboard 37 is a large circular arc part 37a-3 in which an intermediate part (upper part) connecting the vertical side plates 37a-1 and 37a-2 of the outer member (surface material) 37a is convex upward. Both side plates 37a-1, 37a-2 are smoothly smoothed by the circular arc portion 37a-4 which is continuous with the large circular arc portion 37a-3 and smaller than the large circular arc portion 37a-3. 2 is wider than the existing headboard 4 in the expected direction.

    The lower configuration of the plate-like outer member 37a having a curved configuration on the upper surface and side surfaces of the new headboard 37 is as follows from the inner side (right side in the figure) to the outer side. An inner flange 37b is provided from the inner side plate 37a-2 to the outside. The ribs 37c (two in this example) of the protrusion which contact | connects the upper part of the existing headboard 4 from the lower side of the large circular arc part 37a-3 are provided. A rib 37d is provided on the inner side of the outer side plate 37a-1. The external material 37a, the flange 37b, and the ribs 37c and 37d extend in a direction perpendicular to the paper surface of FIG. The new headboard 37 is made of an aluminum extrusion mold. The other sides of the connecting member 29 whose one side is fixed to the upper ends of the new columns 27 and 28 are in contact with the side plate portion 4b of the existing headboard 4 and fixed by blind screws 56, respectively.

    A connecting member 50 for attaching the new headboard 37 to the existing headboard 4 is attached to the outer connection tool 29. The connecting member 50 is used to lock a flange 50d placed on one horizontal flange of the connecting member 29, a groove member 50a having a cross-sectional groove shape for forming a glass groove, and a rib 37d of the new headboard 37. And a glazing bead for fixing the upper edge of the undercut prevention member 36 when the undercut prevention member 36 is a plate material such as a glass plate. And a locking groove 50f for locking the glazing bead 39. The protrusion 50e and the locking groove 50f are provided to face the mouth of the groove member 50a. The connecting material 50 is an integral aluminum extrusion mold material. The connecting member 50 is disposed over the entire length of the new headboard 37. A gap g necessary for assembly is provided between the connecting member 50 and the side plate 37a-1 on the outer side of the new headboard 37. Further, the engagement between the locking groove 50c and the rib 37d is provided with a backlash (gap) necessary for assembly.

  Before assembling the new headboard 37, the connecting member 50 is attached to the connecting tool 29. At this time, the flange 50d is placed on one flange of the external connector 29, the connector 29 is inserted, and the machine screw 57 is screwed into the flange 50d. As a result, the connecting member 50 is fixed to the existing headboard 4. In addition, the connecting tool 29 of this example has a length in the longitudinal direction larger than the same length of the new columns 27 and 28. The connector 29 protrudes from both sides of the new support columns 27 and 28 in the longitudinal direction. Further, the connecting member 50 may have the same length as the new headboard 37.

  Next, a through-hole preventing material 36 and a new headwood 37 are attached, either of which may be first, and each can be connected to the connecting material 50 separately.

  In the new headwood 37, the outer side is lowered and the inner side is lifted so that the flange 37b is slightly higher than the square circle 4e on the inner side of the existing headboard 4, and the leading end of the rib 37d is engaged with the locking groove 50c. When the new headboard 37 is moved to the inner side in accordance with the mouth portion, the rib 37d is fitted into the locking groove 50c. Here, when the new headboard 37 is rotated clockwise in FIG. 12 around the fitting portion between the rib 37d and the locking groove 50c, the flange 37b becomes the existing headboard 4 and the flange of the inner connection tool 29. It descends without hitting etc., and it sits on the horizontal flange of the connecting tool 29 inside. When the new headboard 37 is pushed to the outside, the edge of the flange 37 b hits the flange of the connector 29 at the corner of the connector 29. Here, the inner connection tool 29 is inserted, the machine screw 58 is screwed into the flange 37b, and the new headboard 37 is fixed to the existing headboard 4.

  There are also the following methods for attaching the new headboard 37. Without attaching the connecting member 50 to the connecting member 29, the locking rib 50 c of the connecting member 50 is fitted into the rib 37 d of the new headboard 37, and the connecting member 50 is supported by the new headboard 37, and is lowered to the existing headboard 4. When coming, the flange 37b of the new headboard 37 is seated on the horizontal flange of the inner connection tool 29. Further, the flange 50d of the connecting member 50 is seated on the horizontal flange of the connecting tool 29 on the outside side. The respective horizontal flanges of the inner side and outer side connection tools 29 are inserted, and the machine screws 57 and 58 are screwed into the flange 50d of the connecting member 50 on the outer side, and the flanges of the new headboard 37 on the inner side. Screw into 37b.

  When the new headboard 37 is attached to cover the existing headboard 4, the rib 37 c contacts the upper part of the existing headboard 4. As a result, the width of the expected direction of the new headboard 37 is widened, but the upper surface of the handrail is prevented from being bent.

    The glass plate is clamped and fixed to the glazing beads 38 and 39 with elasticity. At this time, the glazing bead 38 is locked to the protrusion 50e. Then, after inserting the glass plate into the glass groove, the glazing bead 39 is locked in the locking groove 50f. Alternatively, first, the new headboard 37 may be attached to the latter half of the process of holding the new headboard 37 on the upper edge of the glass plate via the glazing beads 38 and 39 and supporting the glass plate to the brackets 33 and 34.

According to the second embodiment, the appearance of the upper handrail is excellent. Since each member at the upper part of the handrail is directly or indirectly fixed by the new headboard, which is an integral part, the upper part of the handrail becomes strong. When the new headwood 37 is made of an aluminum extrusion mold, the relative position of the upper handrail is accurately determined. The upper bracket 33 used in the first embodiment can be omitted.
[Example 3]

    Example 3 is performed when it is determined in step S6 in the handrail repair system of the present invention that only the lattice portion is to be removed. The other points are the same as in the first or second embodiment. Example 3 in which only the lattice portion is removed will be described.

First, we will discuss the complete removal of the grid from the existing handrail. The tapping screw 17 that fastens the headboard 4 and the lattice receiver 3a is removed.
Next, the lower rail 3b of the lattice 3 is removed by removing the machine screws 14 fastening the bracket 13 and the lower rail 3b (see FIGS. 4 and 5). It should be noted that the order of removal of the lattice receiver 3a and the lower rail 3b can be any order. Finally, the lower side of the grid 3 is moved in the expected direction, and the lower bar 3b is brought to a position where it is detached from the bracket 13. Then, when the lattice 3 is pulled down, the lattice receiver 3a is detached from the recess 4d of the cap 4 and the lattice 3 can be removed.

    Thus, the grid 3 can be removed by removing it from the headboard 4 and the column 2.

    The above-described removal of the grid is a fastening release operation mainly including a screw removing operation. Therefore, there is no generation of noise and dust. Further, the removed grid may be reused or regenerated as it is, or may not be used due to corrosion or the like.

    Next, another method for removing the grating which is effective when the grating is no longer durable due to corrosion or the like will be described. For example, an electric cutter is used. First, the connecting portion between the handrail 3c and the lattice receiver 3a is removed. When the grid 3 is made of iron, most of the connecting portions are welded by abutting the ends of the grid receiver 3a and the handrail 3c. In addition, a small number of iron lattices, most of the aluminum lattices, the lattice receiver 3a and the balustrade 3c are fitted into the holes provided in the lattice receiver 3a and the end of the hollow baluster 3c is enlarged. It is fastened and concluded.

    Therefore, the lattice receiver 3a and the handrail 3c cannot be disassembled from this portion. Therefore, the handrail 3c is cut along the lower surface of the lattice receiver 3a with an electric cutter or the like while the existing handrail is not disassembled and is erected. Then, the machine screw 14 which has fixed the lower rail 3b to the support | pillar 2 via the bracket 13 is removed. Alternatively, the bracket 13 may be cut while leaving the side of the bracket 13 fixed to the column 2 on the column 2 side. After that, a new handrail is erected by the same construction method as in Example 1.

    According to the third embodiment, there is no existing grid as shown in FIG. 13, and the through-hole preventing material 36 can be seen from the indoor side.

According to this method, there is an advantage that the work time for removing the lattice is short. And even if the existing grid is fouled, it can be renewed. Also, even if the existing lattice design becomes obsolete, it can be changed to a novel design lattice.
[Example 4]

    Next, a description will be given of a fourth embodiment of the present invention in which construction is performed while leaving only the pillar. As already described in step S7 of the flowchart, the fourth embodiment of the present invention is applied to the case where the existing support 2 cannot be used due to corrosion or damage from the viewpoint of durability.

    In particular, when the existing support 2 cannot be used from the viewpoint of durability, the support 2 is removed if it is conventional. When the existing support | pillar 2 is embedded in the outer edge 5 of concrete, it is that the concrete of the outer edge 5 around the support | pillar 2 must be destroyed and removed with a concrete breaker. In particular, it must be ensured that this debris does not fall outside the building on the higher floor veranda. For this reason, since a scaffolding is provided and the veranda is blocked at the tent, the construction of handrail repair work is difficult and costly. Also, breakage of the outer edge 5 with a concrete breaker must be done carefully. This is because the outer edge may form a part of the strength member of the veranda, and it must not break down to cause cracks in the veranda. Although it is possible to remove the core material by opening a large number of holes around the core material of the support column 2 without breaking the outer edge 5 with the concrete breaker, it takes a lot of work time.

    Also, the work with the concrete breaker is not suitable for work in a residence where there are residents because significant noise and dust are generated. The method of cutting existing struts generates significant noise and dust.

    In addition, the conventional method of covering the existing strut with the cover member is effective when the existing strut is not durable enough but can be used if it is reinforced, but it is unclear how much the durability is improved. And it cannot be adopted when the column is no longer usable.

    Therefore, in the fourth embodiment, the lattices, the caps, the caps and the like are removed while leaving the existing support 2. Since the method of removing the lattice is a method of removing the above-mentioned lattice completely (see the description in the previous stage of Example 3), the description thereof is omitted here.

    Referring to FIG. 7, after removing the lattice 3, all the tapping screws 18 to which the headboard receiver 15 and the headboard 4 are fastened are unscrewed and removed. Thus, when the headboard 4 is lifted, the fitting portion 4 a fitted to the headboard receiver 15 is detached from the headboard receiver 15. So remove Kasagi 4. Next, the tapping screw 9 that fastens the headboard receiver 15 to the column 2 is screwed back. As a result, the cap stand 15 is removed from the column 2. Only the column 2 remains. However, if the column 2 is supposed to be unstrength in terms of strength, however, if it is removed from the housing, problems will occur as already described. Therefore, the support column 2 is left as it is.

    FIG. 14 is a longitudinal sectional view in the expected direction of the completed handrail according to the fourth embodiment, and shows a cross section taken along the line AA of FIG. FIG. 15 is a horizontal sectional view of the handrail. Hereinafter, the work after only the existing support 2 remains on the outer edge 5 will be described in the order of the construction method.

    The existing handrail is disassembled and the support column 2 is erected on the outer edge 5. In this case, the bracket 13 that fixes both ends of the lower rail 3b of the lattice 3 to the support column 2 may be left as it is, or may be removed (the state where the bracket 13 is removed in FIGS. 14 and 15).

    As shown in FIG. 15, new struts 41 and 41 are erected on the outer edge 5 on a straight line connecting the existing struts 2 and 2 near the existing struts 2 and 2. The standing method of the new struts 41 and 41 is as follows. A hole 5e having a diameter slightly larger than that of the core member 42 is formed in the outer edge 5 from above the outer edge 5 at a position where the new columns 41 and 41 are erected. This drilling is performed by, for example, a concrete cutter (core drill, hole saw, etc.). The core material 42 is inserted into the hole 5e. The core member 42 is a stainless steel round pipe. The length of the core material 42 is inserted into the inside of the following main strut material 43 and is just fitted, but the fitting length is shorter than the length of the main strut material 43. In this example, the upper end of the core member 42 is such that it reaches the upper edge of the lower bracket 44. The cross section of the core material 42 may have the same shape and dimensions as the core material 7 of the hollow pipe constituting the existing support column 2, or may have another shape and dimension. An adhesive is filled in the gap between the core material 42 and the hole 5e before or after the core material 42 is inserted into the hole 5e. Various adhesives are used, for example, epoxy bond (trade name) is used. After the adhesive is solidified, the main column 43 is inserted into the outer periphery of the core member 42. Here, the core material 42 and the main strut member 43 may be the same core material of the existing strut 2 and the same cross-sectional shape as the main member, or may be a strip member having another cross section.

    In addition, although the cross section of the main material 43 of the new support | pillars 41 and 41 shown in FIG. 15 may be a hollow square simply, this example used the thing of the same cross section as the existing main material 6. FIG.

    After the main member 43 is fitted to the core member 42, a round base (see the existing round base) 8 is inserted into the main member 43 and is seated on the outer edge 5. Thereafter, the main material 43 and the core material 42 are coupled with a blind rivet (not shown). This rivet is inserted into a hole in the center of one side of the main material 43 and a radial hole of the core material 42 (similar to rivet connection between the main material 6 and the core material 7 of the existing column 2). The top surfaces of the upright new columns 41 and 41 are at the same height as the top surface of the existing column 2.

    Next, it inserts from the upper end of the new support | pillars 41 and 41, and attaches the bracket 44 to the new support | pillars 41 and 41, respectively. The bracket 44 has a square shape in which the base portion 44 a is fitted to the outer periphery of the new support column 41. A beam portion 44b protrudes from the root portion 44a in a cantilever shape toward the outside. A receiving portion 44c for supporting the through-hole preventing material 36 is erected at the tip of the beam portion 44b. The receiving portion 44c has a groove 44d extending along the wall surface, and this groove 44d is divided by a plate portion 44e as shown in FIG. The bottom on the lower side of the groove 44d is the tip of the beam portion 44b. The plate portion 44e is positioned on a vertical plane whose center is along the center of the new support column 41 in the expected direction.

    The bracket 44 is fixed to the new support 41 by a through bolt nut 45 penetrating the base 44 a, the main material 43 of the new support 41, and the core material 42 after fitting the root 44 a to the outer periphery of the new support 41. The direction of the through-bolt nut 45 is a direction parallel to the wall surface, and a hole penetrating the through-bolt may be previously formed in the bracket 44, the main material 43, and the core material 42, or may be assembled.

    When the undercut prevention material 36 is a water-resistant plywood, an aluminum plate, a refractory material, etc., as shown in FIG. 14A, the both ends of the lower edge 36a of the undercut prevention material 36 are fitted into the groove 44d of the brackets 44, 44. Match.

    The upper edge 36b of the undercut preventing material 36 is fitted into the mouth portion of the groove 48e provided on the lower surface of the new headwood 48 in the direction perpendicular to the paper surface of FIG.

When the through-hole preventing material 36 is a glass plate, (1) an edge is provided on the glass plate. (2) Two methods of attaching with a glazing bead as a single glass plate can be selected.
When the glass plate is provided with an edge, the groove of the strip material having a cross-sectional shape of the grooved steel is fitted exactly to the lower edge of the glass penetration preventing material 36. The edge member of such a strip is made of stainless steel. This edging material just fits into the mouth of the groove 48e of the new headboard 48 and the mouth of the groove 44d of the bracket 44 (not shown).
When the glazing bead is attached as a single glass plate, the glazing beat 46, which is locked to the protrusion 44f provided in the portion constituting the groove 44d, as shown in FIG. The glass plate is sandwiched between glazing beats 47 fitted into 44 g. The glass plate is seated on the bottom of the groove 44d through the glass pillow 44h. The length of the groove 44d shown in FIG. 14B in the direction perpendicular to the paper surface (direction parallel to the wall surface) is set to a length necessary to support the glass plate. Further, a groove 44d may be provided between the brackets 44 provided on the adjacent new columns 41, respectively.

    FIG. 14C shows the case where the upper edge of the glass plate of the undercut prevention material 36 is supported by a glazing bead.

    In the case of attaching the glass plate penetration prevention material 36 to the new headboard 48, the ridge 48f and the groove 48g are provided facing the groove 48e mouth portion of the new headboard 48 shown in FIG. . A glazing bead 46 having the same cross section as that of the glazing bead 46 shown in FIG. Similarly, a glazing bead 47 shown in FIG. 14B is fitted in the groove 48g. Glazing beads 46 and 47 sandwich the upper edge of the glass plate through-hole preventing material 36.

    Each of the through-hole preventing members 36 is supported by inserting the upper edge into a groove 48e that opens downward to the outside of the new headboard 48 and lifting the lower edge down to the groove 44d. In other words, the mounting is a fast type. Further, when the new headboard 48 is attached to the new column 41, the new headboard 48 may be lowered so that the groove 48e is fitted into the upper edge 36b of the undercut preventing member 36 previously supported by the bracket 44.

    The new headboard 48 is made of a hollow cylindrical extruded aluminum material. The attachment part of the new headboard 48 to the new support 41 is the same as the attachment part of the headboard 4 to the existing support 2. However, in the case where the existing support 2 and the new support 41 have different cross sections, the structure of the head support 15 for attaching the new head support 48 to each support is generally different.

    In this example, the existing strut 2 and the new strut 41 have the same cross section. Therefore, when the new headboard 48 is attached to the new support 41 and the existing support 2, a new headboard 49 made of an aluminum extruded mold having the same cross section as that of the existing head support 15 is used. As shown in FIG. 16, the new cap stand 49 has a shallow groove shape. The new headboard receiver 49 is the same as that described in the first to third embodiments. The length of the new headboard receiver 49 is limitedly extended to both sides of the new column 41. When the new strut 41 and the existing strut 2 are close to each other, the new headboard receiver 49 may be provided so as to extend over both struts 2 and 41. Further, since the new headboard 48 continuously extends over the new support 41 and the existing support 2, the existing head support 15 on the existing support 2 is used as the new head support 49 as it is. In addition, the new headboard 48 may be supported (not shown). In addition, a new coping receptacle 49 having the same length as that of the new coping 48 may be provided on each of the columns 2 and 41 and fixed to the respective columns 2 and 41.

    After the new headboard receiver 49 is fixed to the upper end of the new support 41 and the existing support 2 with the tapping screw 9, respectively, the fitting part 48a of the new headboard 48 (same as the fitting part 4a of the existing headboard 4) is provided. It fits on both sides of the upper part of both ends of the Nosagami receptacle 15 and the New Kazaki receptacle 49. Thereafter, the tapping screw 18 is screwed into the new headboard 48 through the headboard receivers 15 and 49.

    FIG. 17 is a front view seen from the inside of the repaired handrail modified by the repair method of the fourth embodiment.

    According to this Example 4, since the existing struts are not removed, there is no dust, noise generation, concrete piece fall prevention work, etc. associated with the removal of the existing struts. Handrails can be renewed just by removing them. The new railing can have a smaller expected width than that of the first embodiment. When the existing strut and the new strut are connected with the cap support, if the strength remains in the existing strut, the strength and rigidity of the handrail support is improved by combining the new strut and the existing strut. In addition, when the existing struts are insufficiently durable, they are reinforced with new struts. In addition, it can be used as a semi-cover method for repairing handrails without connecting existing struts and Shin-Kasagi. In this case, the existing column 2 is left standing on the outer edge 5.

In the fourth embodiment, the new column is set up near the existing column, but the position of the new column can be arbitrarily selected. Further, when the existing strut is not reinforced, the position of the new strut may be provided at a position different from the line connecting the existing struts in the expected direction.
[Example 5]

    The construction method of the present invention is systemized including diagnosis of the body and diagnosis of the handrail. According to this system, any one of the first to fourth embodiments and the fifth or sixth embodiment or the conventional construction method is selected.

    As shown in the flow chart of FIG. 1, in step S2-2, the existing handrail support has strength, but repairs other than the support are not necessary in terms of durability, but we want to change the handrail in terms of design. Alternatively, when the existing handrail support has strength, but the grids other than the support, the caps, etc. need to be repaired from the viewpoint of durability, the repair according to the present invention is selected. Therefore, when a handrail repair method that is not a handrail repair by completely removing an existing handrail is selected in step S2-3, or when a handrail repair method is selected in step S1-1, the new support is not set up. The repair method is Embodiment 5 of the present invention.

    In the conventional construction method, (1) in the case where the existing column is a plate column, a repair method in which the plate column is surrounded from both sides by a split column cover through a base material (see Japanese Patent Laid-Open No. 57-89053). (2) A renovation method in which a pair of strut covers are fitted and fixed from both sides of an existing strut (refer to Japanese Patent Laid-Open No. 58-113659). (3) A refurbishment method in which a fixed auxiliary column is fitted outside the existing column. In this repair method, a reinforcing arm is provided to reinforce the fixed auxiliary column (Japanese Patent Laid-Open No. 57-174574). (4) A pair of left and right mounting bodies are attached to the existing struts facing each other, and the strut body covering the existing struts is fitted into the fitting grooves of the mounting body, and the mounting bodies are attached and fixed to the existing struts 2. (See Japanese Utility Model Publication No. 58-191233). Etc.

    These conventional construction methods cover new pillars with covers. In these conventional examples, it is an indispensable configuration that a cover that covers this support is manufactured according to the existing support and is then applied to the existing support.

    However, when the existing strut can be expected to be durable, or when the existing strut is reinforced to restore the durability, the method of covering the entire strut is expensive. Therefore, in the fifth embodiment of the present invention, it is possible to provide a handrail that is not costly and has a new design when the existing strut can be expected to be durable.

    As already described, in the fifth embodiment, the existing support 2 is an option when it is expected that the existing support 2 is durable enough.

    As already described, the grid 3 and the headboard 4 are removed from the existing handrail 1, and the bracket 13 supporting the grid 3 is removed from the existing support 2. This removal ensures that there are no protrusions on the outer surface of the existing strut 2. Therefore, if there is a protruding object, it is deleted with a disc grinder, for example.

    Thus, in the same manner as in the fourth embodiment, the bracket 44 described in the fourth embodiment is attached to the existing support 2, and after only the existing support 2, the removed head support 15 is attached to the existing support 2. . The lower edge of the panel or glass plate, which is the through-hole preventing material 36, is supported by the bracket 44, and the upper edge of the panel or glass plate is supported by the new headboard 48 used in the fourth embodiment. The new headboard 48 is fitted and fixed to the headboard receiver 15. These detailed explanations use the explanation about the case where the through-hole prevention material 36 of Example 4 is a panel or a glass plate.

According to the fifth embodiment, in the case where all of the lattice, the headboard, etc. are determined to require durable measures due to corrosion, mechanical damage, etc., and only the support columns are determined to be durable enough. Since the exterior plate material such as a panel or a glass plate is supported by the bracket and the new headboard attached to the existing support column, it has the advantages of the above-described embodiments with the characteristic that a new handrail design can be freely selected. There are few members and the cost of the members is low. Also, assembly is easy and assembly costs are low.
[Example 6]

    If there is no service life of the housing, it is of course unnecessary to repair the handrail. However, in the case where the housing must be resident even if it is recognized that the service life of the housing is remarkably short, the handrail has durability in step S1-1. Is judged. If it is determined that the handrail support is at least durable, Example 5 or 6 is adopted. The sixth embodiment is also employed in the same steps as the fifth embodiment.

    The sixth embodiment is the same as the fifth embodiment up to the step of providing only the existing support 2 and providing the bracket 44 below the support 2. In the sixth embodiment, as shown in FIG. 18, after the bracket 44 is attached to the support 2 at the lower part of the handrail, the upper bracket 53 is provided on the upper part of the support 2.

    The upper bracket 53 has a horizontal cross section as shown in FIG. In FIG. 19, the upper bracket 53 has a square shape in which the root portion 53a is fitted to the outer periphery of the support column 2 shown schematically. After the root portion 53 a is fitted to the support column 2, the upper bracket 53 is fixed to the support column 2 by tightening the base portion 53 a and the support column 2 through the bolt nut 54 in the lateral direction. A beam portion 53b protrudes outward from the root portion 53a of the upper bracket 53 in a cantilever shape. At the tip of the beam portion 53b, a receiving portion 53c that supports the through-hole preventing material 36 is provided. The receiving portion 53c has a vertical groove 53d. The left and right edges of the slip-through preventing member 36 can be fitted into the groove 53d. The groove 53d is separated left and right by a partition plate 53e. As already described, the lower bracket 44 has a bottom portion that supports the lower edge of the through-hole preventing material 36.

    After the lower bracket 44 is attached to the support 2, the upper bracket 53 is attached to the support 2. The upper bracket 53 is attached to the support column 2 by fitting the side edge of the through-hole preventing material 36 into the groove 53d and fitting the lower edge of the under-hole preventing material 36 into the groove 44d of the lower bracket 44. Note that a wedge (not shown) is inserted between the support column 2 and the through-hole preventing material 36 above the upper bracket 53 in the same manner as in the first embodiment.

    In the above, when the undercut prevention material 36 is glass, when not supported in FIG. 18 (a), but supported by the bracket 44, the edges of the four circumferences of the glass are grooved steel shaped metal strips to prevent breakage. Cover with. When the undercut prevention material 36 is glass, it may be as shown in FIG. 18B (for details, see the description of FIG. 14B of Example 4).

    In the present example, after fixing the headboard receiver 15 that has been removed to the existing support 2, the headboard 4 that has been removed is attached to the headboard receiver 15. As a result, the existing headboard 4 is restored.

According to the sixth embodiment, when the existing strut is expected to be durable, the lower bracket is attached to the existing strut to support the lower portion of the skip prevention material 36, and the upper portion of the skip prevention material is the upper bracket. Since it only supports, the new grid can be updated easily. There is a feature that the cost is low because only the through-hole preventing material 36 and the brackets 44 and 53 are necessary.
[Example 7]

    In Example 6, when the upper bracket 53 (referred to as 53A) and the lower bracket 44 (referred to as 44A) are divided by two in the vertical plane in the expected direction, There will be no disassembly of the handrails, and it will be renovated to new handrails. This is a construction method by completely removing the existing handrail in step S2-3 of FIG. FIG. 20 is a horizontal cross section of the upper bracket 53A and the lower bracket 44A of the seventh embodiment. In the figure, the pieces divided by the vertical mating surface SL in the expected direction and joined by the bolts and nuts 59 are combined. Others are the same as brackets 53 and 44, respectively.

    In the above description, the headboard is configured using the existing headboard 4.

    Further, the glass plate may be supported by the new headboard 48 as described in the fifth embodiment.

    According to the seventh embodiment, when the existing strut is expected to be durable, the lower bracket is attached to the existing strut to support the lower portion of the skipping prevention material 36, and the upper portion of the skipping prevention material 36 is used as the upper bracket. Or it is not necessary to remove the lattice because it is only supported by Shin-Kasagi. Or, in addition, because the handrail can be refurbished without touching the existing headboards and lattices, the construction period is minimal, and no waste is generated according to constructions that do not touch the headboards and lattices. Is also possible.

    In the embodiment, the slip-through prevention material is provided on the outer side (as viewed from the room) than the existing support column, but may be provided on the inner side (same).

    In each of the embodiments, the new under-hole prevention material is disposed on the outer side of the existing support in the expected direction, but may be disposed on the indoor side of the existing support.

It is a flowchart of the handrail repair system of this invention. It is a flowchart following FIG. It is a front view seen from the inner side of the existing handrail. It is a longitudinal cross-sectional view cut by the surface of the prospective direction of the existing railing. FIG. 5 is a horizontal sectional view of FIG. 4. It is a front view which shows the wall side edge part of a handrail and is seen from an inner side. It is a longitudinal cross-sectional view cut | disconnected by the surface of the expectation direction of a handrail upper part. It is a longitudinal cross-sectional view cut by the surface of the prospective direction of Example 1 of this invention. It is a horizontal sectional view of FIG. FIG. 10 is a partially enlarged view of FIG. 9. It is a front view seen from the inner side of the handrail completed by the repair construction method of Example 1. FIG. It is a longitudinal cross-sectional view which shows the upper part of the handrail of Example 2, and is cut | disconnected by the surface of an expected direction. It is a front view seen from the inner side of the handrail completed by the repair method of Example 3. (A) is the longitudinal cross-sectional view cut in the surface of the expectation direction of Example 4, Comprising: AA sectional drawing of FIG. 15, (b) is a longitudinal cross-sectional view which shows the support of the lower part of a glass plate, (c) is glass It is a longitudinal cross-sectional view which shows the support of the upper part of a board. It is a horizontal sectional view of Drawing 14 (a). It is an enlarged view of the upper part of Fig.14 (a). It is a front view seen from the inner side of the handrail completed by the repair method of Example 4. (A) is a longitudinal cross-sectional view cut by the surface of the expectation direction of Example 6, (b) is a longitudinal cross-sectional view which shows support of the lower part of a glass plate. FIG. 19 is a partially enlarged horizontal sectional view of FIG. It is a horizontal sectional view showing a bracket of Example 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Handrail 2 ... Post 2b ... Side 3 ... Lattice 3a ... Lattice support 3a-1 ... Both sides upper surface 3b ... Lower rail 3c ... Handrail 3c-1 ... Tapping hole 4 ... Kasagi (existing) 4A ... End cap 4a ... Fit Joint part 4b ... Side plate part 4c ... Lower member 4d ... Recess 4e ... Square circle part 4f ... Blind rivet
5 ... Outer edge 5a ... Upper surface 5b ... Body vertical surface 5e ... Hole 5f ... Hole 6 ... Main material 6a ... Tapping hole 6b ... Each side 6c ... Projection 7 ... Core material 8 ... Round base 9 ... Tapping screw 11 ... Blind rivet 12 ... Blind rivet 13 ... Bracket 14 ... Small screw 15 ... Kashiwagi 15a ... Top 16 ... Tapping screw 17 ... Tapping screw 18 ... Tapping screw 19 ... Bracket 21 ... Bolt 22 ... Pop nut 23 ... Anchor 24 ... Base 24a ... Flange 24b ... Bolt hole 25 ... Anchor 26 ... Core 27 ... New prop 28 ... New prop 29 ... Connector 30 ... Small screw 31 ... Pole connecting member 32 ... Screw member 33 ... Upper bracket 33a ... Grooved portion 33b ... Steel -Part 33c ... flange 33e ... flange
34 ... Lower bracket 34a ... Groove 34b ... Steer 34c ... Flange 34d ... Bottom 34e ... Rib
35 ... Through bolt nut 35a ... Bolt 35b ... Cylindrical part 35c ... Male screw 35d ... Nut
36 ... Pass-through prevention material 36a ... Lower edge 36b ... Upper edge 36c ... Side edge
37 ... Shin-Kasaki 37a ... Outer member 37a-1, 37a-2 ... Side plate 37a-3 ... Large arc portion 37a-4 ... Arc portion 37b ... Flange 37c ... Rib 37d ... Rib
38 ... Glazing bead 39 ... Glazing bead 40 ... Screw member 41 ... New strut 42 ... Core material 43 ... Main material 44 ... Bracket 44A ... Lower bracket 44a ... Root portion 44b ... Beam portion 44c ... Receiving portion 44d ... Strip 44e ... Plate 44f ... Projection 44g ... Sleeve 44h ... Glass pillow 45 ... Through bolt nut 46 ... Grazing bead 47 ... Glazing bead 48 ... Shinagasaki 48a ... Fitting part 48b ... Slot 48c ... Strip 48d ... Strip 48e ... Strip Groove 48f ... ridge 48g ... ridge groove 49 ... new cap board 50 ... linking material 50a ... groove profile 50b ... ridge 50c ... locking groove 50d ... flange 50e ... protrusion 50f ... locking groove 51 ... glazing Bead 52 ... Glazing bead 53 ... Upper bracket 53A ... Upper bracket 53a ... Root 53b ... Beam 53c ... receiving portion 53d ... groove 53e ... partition plate 54 ... bolt nut 55 ... bolt nut 56 ... blind screw 57 ... machine screw 58 ... machine screw 59 ... bolt nut S1, S2, S3, S4, S5, S6, S7 ... Step S1-1, S2-1, S2-2, S2-3... Step

Claims (18)

In a handrail refurbishment system having a pillar fixed with a root embedded in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. The stage of deciding to remove the existing handrail completely,
d. Providing a new handrail without removing the existing handrail when it is determined that the existing handrail will be completely removed;
A handrail refurbishment system characterized in that a new handrail is erected at a position different from the existing handrail in the expected direction, and the new handrail support and the existing handrail headboard are fixed. The handrail repair system according to claim 1, wherein a new headboard that covers the existing headboard and supports a new undercut prevention material is fixed to a new support or an existing headboard. In a handrail refurbishment system having a pillar fixed with a root embedded in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. Deciding not to remove the existing handrail completely,
d. A step of removing the existing railing prevention material when it is decided not to completely remove the existing railing and providing a new railing;
A handrail refurbishment system characterized in that a new handrail is erected at a position different from the existing handrail in the expected direction, and the new handrail support and the existing handrail headboard are fixed. In a handrail refurbishment system having a pillar fixed with a root embedded in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined not to be durable,
b. When it is determined that the strength of the support is not durable, it is determined whether or not to remove the existing handrail completely,
c. Deciding not to remove the existing handrail completely,
d. When it is decided not to completely remove the existing handrail, the stage of the existing handrail, removing the underpass prevention material, leaving the support, and providing a new handrail,
A renovation system for handrails, which has a new strut in a position different from that of existing handrail struts, and supports new caps and new slip-out prevention materials with the new struts. 5. The handrail repair system according to claim 4, wherein a new handrail support is erected on a line connecting the existing support and the new headboard and the existing support are joined and fixed. In a handrail refurbishment system having a pillar fixed with a root embedded in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined to be durable,
b. When it is determined that the strength of the support is durable, it is determined whether repairs other than the support are necessary,
c. The stage where it is judged that refurbishment other than the pillar is necessary,
d. The stage other than the support is removed,
e. A process of providing a bracket on the support column and supporting a new slip-out prevention material with the bracket and new headboard,
It is characterized in that the base of the bracket is fixed to the support, the lower edge of the new punching prevention material is supported at the tip of the bracket, and the upper edge of the new punching prevention material is supported by the new headboard fixed to the support. Handrail refurbishment system. In a handrail refurbishment system having a pillar fixed with a root embedded in a concrete support member,
A. Judging whether the strength of the column has durability,
a. The stage where the strength of the column is determined to be durable,
b. When it is determined that the strength of the support is durable, it is determined whether repairs other than the support are necessary,
c. The stage where it is judged that refurbishment other than the pillar is necessary,
d. The stage other than the support is removed,
e. A step of providing a plurality of brackets on each of the columns, and supporting a new punch-out prevention material with the brackets;
A handrail refurbishment system characterized by having a bracket and fixing the base of the bracket to the support and supporting a new punch-out prevention material at the end of the bracket. In the renovated handrail that renovated the existing handrail,
a. An existing handrail that is erected and has an existing support that is embedded and fixed in a concrete frame, an undercut prevention material that is fixed to the existing support, and a headboard that is fixed to the existing support. Handrails,
b. A new support erected on the housing at a position different from the expected direction of the handrail,
c. New slip-out prevention material supported by the new prop,
d. A connecting member of the existing handrail and the new handrail that connects the new prop and the existing headboard,
Refurbished handrail characterized by having At the same position in the horizontal direction along the surface in the expected direction both surfaces provided with existing handrails, the new posts that are respectively erected on the building frame, and the strut connecting member each other and fixed to connecting the new posts, The repaired handrail according to claim 8, wherein: 10. The repaired handrail according to claim 8, further comprising a new headboard that covers the new support and the upper part of the existing support and is fixed to the new support and supports the upper part of the new undercut prevention material. In the renovated handrail that renovated the existing handrail,
a. A member of an existing handrail from which an undercut prevention material has been removed from an existing handrail that is erected, and has an existing support that is embedded and fixed in a concrete frame, and a headboard that is fixed to the existing support, An existing handrail without a slip-through prevention material fixed to an existing support;
b. A new support erected on the housing at a position different from the expected direction of the handrail,
c. New slip-out prevention material supported by the new prop,
d. A connecting member of the existing handrail and the new handrail that connects the new prop and the existing headboard,
Refurbished handrail characterized by having At the same position in the horizontal direction along the surface in the expected direction both surfaces provided with existing handrails, the new posts that are respectively erected on the building frame, and the strut connecting member each other and fixed to connecting the new posts, The improved handrail according to claim 11, characterized in that: The repaired handrail according to claim 11 or 12, further comprising a new headboard that covers the new support and the upper part of the existing support and is fixed to the new support and supports the upper part of the new undercut prevention material. In the renovated handrail that renovated the existing handrail,
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A new support erected on the housing at a position different from the existing handrail,
c. New slip-out prevention material supported by the new prop,
d. Shin Kasagi supported by the new prop,
Refurbished handrail characterized by having The improved handrail according to claim 14, wherein the existing support post and the new support post are joined and fixed via a new headboard. The improved handrail according to claim 15, wherein the existing strut and the new strut are arranged in a straight line. In the renovated handrail that renovated the existing handrail,
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A bracket that is fixed to an existing column and protrudes in the expected direction;
c. A new slip-out prevention material with a lower edge supported at the tip of the bracket,
d. A new headboard that is fixed to an existing column and protrudes above the upper edge of the new undercut prevention material, and supports the upper edge of the new undercut prevention material,
Refurbished handrail characterized by having In the renovated handrail that renovated the existing handrail,
a. The existing struts that have been removed from the standing handrails that have been erected and that have been fixed to the existing struts, and the caps that have been secured to the existing struts, and have been embedded and secured in the concrete frame,
b. A plurality of brackets that are fixed in the vertical direction on the existing support columns and project in the expected direction,
c. A new punch-out prevention material whose lower edge is supported at the tip of the lower bracket and whose upper portion is supported by the upper bracket,
Refurbished handrail characterized by having

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