KR0128809B1 - Support structure for the railing of stairs and a method for consturcting the railing by utilizing the same - Google Patents

Abstract

The balustrade constructing method is comprised of (a) fixing a bottom plate of an inner pillar(21) comprised of a bottom plate(23) and a vertical extension part(25) in a flat surface of a respective up-down step board part of a staircase of a building; the step of (b) fixing one side of the scaffold pipe(24) in the vertical extension part(25) of the respective inner pillar(21) to install a temporary balustrade; the step of (c) separating the scaffold pipe(24) from the vertical extension part(25); the step of (d) fitting an outer pillar(31) comprised of a main body part(32) which can be fitted in the inner pillar, a wing part(33) and a bolt supporting part(34) in the circumference of the inner pillar; the step of (e) fixing terminal part of a span(41) in the outer pillar(31).

Description

Strut structure for machine railing and handrail construction method

1 is a perspective view showing a temporary handrail of a staircase constructed by a conventional method.

2 is a perspective view of a permanent rail constructed by a conventional method.

3 is a perspective view of a permanent handrail made of a colored steel sheet constructed by a conventional method.

Figure 4 is a perspective view of the inner post used in the handrail construction method of the present invention.

5 is a perspective view of a temporary handrail constructed in accordance with the method of the present invention.

6 is a perspective view of an outer post according to the invention.

FIG. 7 is a cross-sectional view showing a state in which the outer support shown in FIG. 6 is fitted around the inner support shown in FIG.

8 is a perspective view of a permanent handrail made of colored steel sheets constructed in accordance with the present invention.

＊ Explanation of symbols on main parts of drawing

2, 8: Shoring 4, 15, 27: Fixture

6, 24, blanking pipe 11: pillar

21: inside holding 23: bottom plate

25: vertical extension parts 23a, 25a, 32a, 34a: bolt holes

33a: bolt insertion hole 31: outer support

33 wing 34 bolt support

35: cover 36: plug

37 bolt 43 railing structure

The present invention relates to a railing of a building staircase, and more particularly, to a construction method and a strut structure using a temporary guardrail to be installed on a stairway under construction for the safety of an operator during work as part of a permanent railing structure.

In most construction sites, when the framing and slab construction is completed, various internal constructions are performed inside the building. At this time, temporary staircases are installed on the stairs to promote worker safety.

After finishing the internal finishing work inside the building, all temporary railings are dismantled and removed, and permanent railings are installed in place.

That is, railings made of steel, stainless steel, and aluminum, which are installed for safety in stairs of apartments and office buildings, are permanent rails permanently installed in the construction completion stage of the building.

With reference to FIG. 1 and FIG. 2, the conventional construction method of temporary handrails and permanent handrails is eliminated.

In order to install temporary handrails on the staircases of the completed frame and slab constructions, handrails (2) with clamps (1) attached to one end are installed in the upper and lower parts of the stairs and, if necessary, in the middle of the stairs. do. Using a fixture 4 such as a bolt or a clamp, the hollow pipe 6 is fixed at two or more parallel to the inclined surface of the stairs at a predetermined height and used as a temporary handrail. When the interior work of the building is finished, the temporary balustrade is dismantled and drilled using a drill, etc. at a certain position on the side surface or side wall of the stairway, with appropriate numbers in the upper and lower parts of the stairway and, if necessary, in the middle part. A rebar or the like is then inserted into the hole with its tip slightly protruding onto the surface or sidewall of the stairs. This part is finished by plastering the floor and side of the staircase with cement. The lower end of the handrail strut 8 is welded to the reinforcing bar projected onto the surface of the staircase or the side wall, and the span 9 is welded to the top of the strut and the liver and then painted and finished.

In the past, permanent railings were made using iron, stainless or aluminum products. However, when the stair railings are made of these products, there are the following problems.

In other words, when constructing railing of iron products, it is necessary to weld all the pillars, span and liver of railing at the construction site where the stairs are constructed. Therefore, the construction site is complicated and there is a risk of safety accident. Due to the painting work, the painting state is not good, and there is a problem in that even if the painting, the welded portion is easily corroded and rust occurs in this portion.

When the railing of stainless steel is constructed, the color of the railing is not uniform because it is not painted, and it is impossible to make a beautiful colored railing that meets the taste of the consumer.

When the handrail is constructed of aluminum products, since the rivets or screws are coupled to the support post, the span, and the liver, there is a problem that the bonding strength is weak and the durability is short.

Therefore, at present, a method of installing a railing made of color steel sheet manufactured at a railing structure manufacturing plant is used at a construction site. Here, the color steel sheet is made by plating a zinc layer on both surfaces of the substrate, coating phosphate thereon, coating an epoxy resin, and then coating polyethylene on the surface to be the outer surface. In the method of manufacturing a handrail structure using such a color steel sheet, the color steel sheet is cut to a width suitable for forming the span and liver meat forming the handrail structure, and then each of them is bent as many times as necessary to form a span and liver meat. It is known in the art to form holes along the length of the span in the lower face (which is the upper face in the case of the lower span) to join the livers in this hole.

Handrails made of such a color steel sheet are used at a high temperature of about 250 ° C., so they are well painted, beautiful in color, and relatively good in bonding strength such as props, spans, and liver meat.

However, there are various problems in constructing such a step railing made of color steel sheet.

Referring to Figure 3 as an example the procedure for constructing the handrail made of color steel plate as follows.

First, fix the struts with clamps at the appropriate positions of the upper and lower parts of the stairs where the slab construction is completed, and use the temporary handrails by fixing the pipes by the fasteners in the upper and middle portions of the struts. Then, the temporary balustrade is dismantled and removed, and the dripping construction works on the bottom surface of the end side of the staircase, a hole is drilled on the side of the staircase, and a pillar 11 to be a pillar of the permanent balustrade is planted. In the last step, in order to fix the railing structure 12 to the pillar 11, the lower span 13 and the liver 14 of the railing structure is fastened to the pillar with a fixture 15 such as a screw. The balustrade thus completed is shown in FIG.

In this method, the railings are contaminated or damaged since the steps are to be changed or the sidewalls are painted after the railings are constructed. In order to prevent this, if the temporary railing is dismantled and the permanent railing is constructed, the water change work or the side wall painting work must be performed without the stair railing, which may harm the safety of the worker.

In addition, since the temporary guardrail is completely dismantled and removed, a hole is required to be drilled in the side wall of the stairs, and a new post and the like must be inserted and fixed.

The present invention is to solve the above-mentioned problems in the construction of the stair railings, when the temporary railings are installed in the upper and lower inverted part of the staircases are reused as permanent railings, and handrails made in advance in the factory By simply assembling the structure at the construction site and completing the construction, the work time can be shortened and the cost can be saved.

It is therefore an object of the present invention to provide a strut structure for fixing the span of a building staircase, the strut structure comprising a bottom plate and a bottom plate having a plurality of bolt holes for fixing to a bottom surface of an upside down portion of a building staircase. An inner strut consisting of a vertical extension extending upwardly integrally with the plate and having a plurality of bolt holes for fixing the hollow pipe of the temporary handrail, and fitted around the vertical extension of the inner strut and of the same length as the vertical extension; A hollow body portion having a plurality of bolt holes for extending and joining the span of the handrail structure, and a plurality of bolt insertions extending from two sides of the body portion to be curved to surround the ends of the span and coincident with the bolt holes. Wings with holes formed, and the cross section is in the shape of the inside of the wing, and a plurality of bolt holes are formed. It includes an outer strut with a built-in bolt support.

Another object of the present invention is to provide a railing construction method of a building staircase, the construction method comprising the steps of fixing the bottom plate of the inner strut consisting of a bottom plate and a vertical extension on the bottom surface of each up and down inverted portion of the building stairs; And fixing temporary ends of the hollow pipes to the vertical extensions of the respective inner struts, and installing temporary railings; dismantling the hollow pipes from the vertical extensions; and a main body, a wing, and a bolt support. Fitting an outer strut around the inner strut so as to be fitted to the inner strut, and fixing the end of the span to the outer strut.

EMBODIMENT OF THE INVENTION Preferred embodiment of this invention is described with reference to an accompanying drawing.

4 shows the inner post 21 used in installing the temporary handrail of the present invention, and FIG. 5 shows the temporary handrail 22 installed using the inner post 21. As shown in FIG.

The inner post 21 is a steel pillar and has a height of about 1 m. Although the cross-sectional shape is illustrated in FIG. 4 in a rectangular shape, the cross-sectional shape and dimensions of the internal support 21 are appropriately determined in accordance with the shape of the step reversal portion to which the handrail is to be constructed. The inner strut 21 is a bottom plate 23 formed with a plurality of bolt holes 23a for fixing to the bottom surface of the top and bottom inverted portions of a building staircase, and is integrally extended upwardly with the bottom plate 23, and the handrail is empty. The vertical extension part 25 in which the some bolt hole 25a for fixing the pipe 24 (FIG. 5) is formed. On the left and right sides of the vertical extension 25, an appropriate number of bolt holes 25a are formed, which are used in engagement with the outer posts and spans of the present invention which will be described later.

The bottom plate 23 may be rectangular or any other shape and is larger than the cross section of the vertical extension 25, and a plurality of bolt holes 23a are formed at the periphery thereof. These bolt holes 23a are used when fixing the inner post 21 to the bottom surface of the stairs.

As shown in FIG. 5, the temporary handrail according to the present invention has an inner support 21 fixed to the bottom surface of the upper and lower inverted portions of the stairs, and a clamp on the upper and middle portions of the inner support 21 parallel to the inclined surface of the stairs. It consists of two emptying pipes 24 fixed to the back. The inner support 21 drills a hole in the bottom surface of the upper and lower inverted portions of the stairs by a drill or the like corresponding to the position of the bolt hole 23a formed at the periphery of the bottom plate 23, and the bolt of the bottom plate 23 is inserted into this hole. It is fixed to the bottom surface of the stairs by matching the holes 23a and fixing them with a hook bolt or the like.

The temporary handrail is completed by fixing the pipe 24 with a fixture 27 such as a clamp by using a bolt hole 25a formed on the side of the vertical extension 25 of the inner support 21 of the upper and lower inverted portions. do.

When the finishing work inside the building is completed, only the concrete work is done, and the floor and side walls of the rough stairs are plastered with cement. At this time, the drip tray is also installed at the end of the stairs. The bottom plate 23 of 21 is embedded. After cement plastering, change the water and / or paint the side walls of the stairs.

After finishing all the steps on the stairs, the temporary balustrade is dismantled and the permanent balustrade is constructed. When dismantling the temporary railings, the internal struts 21 are left intact, and only the empty pipe 24 fixed to the struts is separated and removed.

A method of constructing a permanent railing will be described with reference to FIGS. 6, 7, and 8.

6 shows an outer strut 31 according to the invention. FIG. 7 shows a cross section of the outer strut 31 and FIG. 8 shows a finished permanent rail 40. The outer struts 31 shown in FIGS. 6 and 7 are extruded aluminum and have a columnar shape like the inner struts 21 and are fitted around the vertical extension 25 of the inner struts 21. A hollow body portion 32 which is fitted and extends the same length as this vertical extension 25 and is formed with a plurality of bolt holes 32a for engagement with the span 41 (Fig. 8) of the handrail structure, A plurality of bolt insertion holes 33a are formed, which extend from two side surfaces of the main body portion and enclose the ends of the span 41 and 8, are coaxial with the bolt holes 32a, and the bolts are entirely inserted. Wing portion 33 and a bolt support portion 34 having a plurality of bolt holes 34a formed coaxially with the bolt insertion hole 33a so as to have a bolt-shaped cross section inside the wing portion and to support the bolt head; do. The inner dimension of the body portion 32 is equal to or slightly larger than the outer dimension of the inner strut 21 so that it fits around the inner strut 21. The state in which the outer strut 31 is fitted around the inner strut 21 and fixed is shown in cross section in FIG. As shown in FIG. 6, a plurality of bolt holes 32a and 34a are formed in the left and right sidewalls of the main body portion 32 of the outer support 31 and the sidewalls of the bolt support part 34. As shown in FIG. These bolt holes 32a and 34a are formed at positions corresponding to the bolt holes 25a formed in the vertical extension portion 25 of the inner support 21, and the span 41 of the railing structure to be described later will be described. It is used to fix it to the strut structure. In the open side of the wing portion 33 of the outer support 31, a portion into which the span 41 of the handrail structure is fitted is closed by a cut cover 35. The bolt insertion hole 33a formed in the wing portion 33 of the outer support 31 is sealed by the plug 38.

A method of constructing a permanent railing using the inner strut 21 and the outer strut 31 constructed at the time of temporary railing installation will be described.

Outer posts around each of the upper and lower inner posts 21 fixed with the bottom plate 23 embedded in the top and bottom inverted bottoms of the stairs in the state of finishing the finishing work, namely, cement plastering, floor changing and painting work. (31) The two are fitted so that the open portions of the wings 33 face each other. Then, both ends of the upper and lower spans 41 of the factory-prefabricated handrail structure 43 (Fig. 8) are inserted between the main body 32 and the bolt support part 34 in the opening of the outer support 31. And fix using bolts 37. That is, the bolt hole 25a formed in the both sides of the vertical extension part 25 of the inner support 21, the bolt hole 32a formed in the both side walls of the main-body part 32 of the outer support 31, Match the positions of the bolt hole 34a formed in the bolt support part 34 and the bolt hole (not shown) formed at both ends of the span 41, and penetrate the bolt through the inner strut 21 and the outer strut. The 31 and the span 41 can be integrally and firmly fixed.

After fixing both ends of the span 41 to the outer support 31, the lid 35 is placed on the opening of the wing 33 of the outer support 31 and the hole of the wing 33 of the outer support 31 is provided. After inserting the plug 38 into 33a, the cover 44 (FIG. 8) is put on the top of the strut structure, and the railing is completed.

The embodiment is for the case that the staircase reversal portion is 180 ° rotated to show the shape of the inner strut 21 and the outer strut 31 so that the handrail structure 43 is installed on the left and right sides of the strut structure, but the inner strut And changing the shape of the external struts can be used even when the step reversal portion is not 180 degrees.

For example, when the step reversal portion is rotated by 90 °, instead of forming bolt holes 21a on the left and right sides of the inner support 21, it is formed on two side surfaces contacting at one corner, and likewise the outer support 31 Instead of forming the wing portions 33 on both the left and right sides of the main body portion 32) of the main body portion 32 may be used by forming the wing portion on the two side surfaces in contact with one corner.

The construction of the handrail according to the above method has the following effects.

By using the pillars constructed at the time of installing temporary railings as internal pillars of the permanent railings, the time and cost required for railing construction can be reduced.

In the handrail construction site, after dismantling the empty handrail pipe and assembling the outer support and the railing structure to the inner support immediately with bolts or screws, the construction period from the dismantling of the temporary handrail to the completion of the permanent handrail can be minimized. It can reduce worker's safety accidents by working without handrails.

After fixing the inner strut to the bottom of the staircase with a hook bolt or the like, since the bottom of the strut is buried at the time of cement cementing of the staircase, the inner strut can be firmly fixed, thereby firmly fixing the entire railing structure.

As mentioned above, although the present invention has been described with reference to preferred embodiments, those skilled in the art may add various changes or modifications to the above embodiments within the scope of the present invention. For example, the outer pillar is not formed of aluminum extrusion tongues, but the hollow body portion and the wing portion are separately molded and joined, or only the wing portion is formed in the shape of a rib to be fixed to the rear of the inner pillar by rivets or screws. It may be. The outer strut can also be used as a metal molding other than an aluminum extrusion. It is also possible for each bolt hole of the main body portion of the outer support and the bolt support to provide a reinforcement portion having increased wall thickness around the bolt hole in order to increase the bearing capacity of the bolt. Accordingly, the invention is not limited to the embodiments described above, but only by the appended claims.

Claims (6)

In the strut structure for fixing the span of a building staircase, the bottom plate 23 in which the several bolt hole 23a for fixing to the bottom surface of the up-down inversion part of a building staircase is integrated with this bottom plate 23 An internal strut 21 consisting of a vertical extension 25 extending upwardly and having a plurality of bolt holes 25a for fixing the hollow pipe 24 and the span 41; A plurality of bolt holes 32a are fitted around the vertical extension 25 of the inner strut 21 and extend the same length as the vertical extension 25 and for engagement with the span 41 of the handrail structure. The hollow body portion 32 formed, and extending from two side surfaces of the body portion 32 to bend to surround the end of the span 41 and formed coaxially with the bolt hole 32a and inserting a plurality of bolts. Wing portion 33 having a hole 33a formed therein, and a bolt support portion 34 having a plurality of bolt holes 34a formed coaxially with the bolt insertion hole 33a and having a cross-section thereof in an L-shape. A strut structure, characterized in that it comprises an outer strut 31. The cover 35 which covers the open side of the wing part 33 of the outer support 31, the plug 38 which blocks the bolt insertion hole 33a, the inner support 21, and the external support. A strut structure, characterized in that it further comprises a lid (44) covering the upper surface of the (31). The strut structure according to claim 1 or 2, wherein the main body portion (32) and the wing portion (33) are integral metal moldings. 4. The strut structure according to claim 3, wherein a reinforcement portion having increased wall thickness is provided around the bolt hole (32a) of the body portion (32) and around the bolt hole (34a) of the bolt support portion (34). A method of constructing a handrail of a building staircase, the method comprising: fixing a bottom plate of an internal support 21 made of a bottom plate 23 and a vertical extension part 25 to a bottom surface of each upside down part of a building staircase, respectively; Fixing one end of the emptying pipe 24 to the vertical extension 25 of the inner support 21 of the installation to install a temporary handrail, dismantling the emptying pipe 24 from the vertical extension 25; An outer strut 31 is formed around the inner strut 21, which is composed of a body portion 32, a wing portion 33, and a bolt support portion 34, and configured such that the body portion 32 can be fitted to the inner strut 21. Handrail construction method comprising the step of fitting, and fixing the end of the span 41 to the outer support (31). 6. The method of claim 5, further comprising the step of securing the span (41) to the outer support (31) by covering the cover (35), the plug (38) and the cover (44) to the support structure. Railing construction method.