JPH0433944B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a steel staircase used as an external staircase of an apartment complex.

(Prior Art) Conventionally, the one shown in FIG. 4 is known as an external steel staircase for a building. The structure of this kind of stairs is 1
A book support P is erected, H-shaped steel support beams B are extended from both sides of this support to the left and right, and the floorboard S of the landing D located on one side (left side) is placed on this support beam to support it. , Each staircase section K1, K of the upper and lower floors is attached to this floorboard.
2, K1a, K2a, one side of K3, K4,
It fixes one end of K3a and K4a,
Corridor D of the main building whose other end also serves as a landing on the other side
It is supported on the floorboard of No. 1.

(Problems to be Solved by the Invention) According to this conventional example, the top step boards K1b and K3b of the staircase parts K1 and K3 are located at the same level as the floorboard S of the landing D on one side ( Stairs section K
The same goes for the bottom step board of 2.K4. ), therefore, the width of the floor plate S is substantially the same as that of the step plates K1b and K3.
It will become wider by one space of b, and from the point of view of trying to reduce the installation area of the stairs,
The challenge was to omit the area of this stepped plate.

Furthermore, supporting the floorboard S with the support beams B exposes the support beams to the outside, which is not only unsightly and undesirable in terms of the design of the staircase, but also increases the cost of manufacturing the stairs due to the need for steel frames for the beam members. This leads to a complex structure.

It is an object of the present invention to provide a staircase with a simpler structure, less manufacturing cost, a better design, and a smaller footprint than conventional staircases. Another object of the invention is to provide a structurally integrated staircase.

(Means for Solving the Problems) The first feature of the present invention is to fix the ends of the support pillars of the vertically adjacent staircase parts to the pillars, centering on the landing, and Each end of the upper step plate and the lowermost step plate of the upper staircase section is fixed to the above-mentioned support, and the support is made of H-beam steel.
Both the upper and lower recess plates also serve as support plates for the landing floorboard, and the upper and lower adjacent recess plates across the landing are arranged on the same plane as the web of the support column.

A second feature of the present invention is that the present invention is equipped with supporting posts that face each other, and that both ends of the supporting pillar side of the staircase section are fixed between the two supporting posts, so that the uppermost part of the lower staircase section can be fitted with a recessed board. and a recessed board at the lowest step of the upper staircase are fixed to the pillars, and both the upper and lower recessed boards also serve as support plates for the landing floorboard.

The third feature of the present invention is that the ends of the vertically adjacent staircases centered on the landing are fixed to the pillars, and the top plate of the lower staircase and the top of the upper staircase are fixed to the pillars. Each end of the lowermost recessed board is fixed to the above-mentioned pillar, and both the upper and lower recessed boards also serve as support plates for the landing floorboard, and the upper and lower recessed boards are connected to the upper and lower ends of the lowermost part of the recessed board. It is located around the floorboards of the landing.

(Example) Examples of the present invention will be described below.

As shown in FIGS. 1 and 2, the staircase in this example has two pillars 1 and 2 in the center, and these pillars are made of H-shaped steel. Both pillars 1 and 2 are erected with a distance between them and with their webs 11 and 21 facing each other. Each stair section 3, 4, 5, 6
Inner Sasara 31, 41, 51,
Both ends of 61 are connected to flanges 1 of struts 1 and 2, respectively.
2 and 22 by welding, and the two pillars and the ends 31, 41, and 51 form a truss as shown in FIG. And each staircase part 3~
Recessed plates 32, 33, 42, 4 at the upper and lowermost parts of 6
3, 52, 53, 63 have one end fixed to the outer surface of the flanges 12, 22 of the column by welding,
The mounting positions are the webs 11 and 21 of the struts 1 and 2.
As an extension of this, the recessed boards function as the structure of the stairs. The recessed boards 32, 42, 52 at the top of each stairway 3-5 also serve as support plates for supporting one end of the floorboards 71, 171, 271 of the landings 7, 17, 27 on each floor from below. ing. And Kekomi board 43, 53, 6
Reference numeral 3 also serves as a support plate as a means for supporting one end of the floorboards 71, 171, 271 of the landing of each floor in a suspended manner from above.

The floorboard 71 of the landing 7 at the bottom of FIG.
It is surrounded by a continuous rib plate 81 and supported by a rib plate 9 having one end attached to the flange 12. Floorboards 17 of landings 17 and 27 on the upper floor
The support means of No. 1,271 also has a similar configuration. 1
Reference numerals 8 and 28 are rib plates, and 19 and 29 are rib plates. For this purpose, the staircase consists of two pillars 1 and 2, sasara plates 31, 41, and 51, and sasara plates 8,
18, 28, and 81.

Therefore, when installing the stairs, the stairs can be attached to the building body by simply supporting two stairs to the building body, and the stairs can be easily fixed to the building.

As shown in the above example, since both ends of the suspension are fixed to the two pillars 1 and 2, they are structurally integrated, and the pillars are made of H-shaped steel, so that the flange 1
Sasara 31, 41, 51, on the extension line of 2, 22,
61 is located, and the recessed plates 32, 33, 42, 43, 52, 53 are located on the extension lines of the webs 11, 21, so that stress transmission occurs in a straight line, which is desirable from a structural standpoint.

Of course, the struts may be, for example, box-shaped struts, as shown in FIG. 3, and are not limited to the H-shaped steel mentioned above. In this case, a recessed plate (in the drawing, recessed plates 32, 43
(shown in the figure), and attach the ends of the plates (saras 31 and 41 in the drawing) to the surface perpendicular to the plate mounting surface.
Then, rib plates 9, 9 are attached opposite to this.

The position of the attachment end of the support to the support may be the position shown by the two-dot chain line in FIG. 3, and does not necessarily have to be at the center of the outer surface of the support 1 (the position shown by the solid line in the figure).

Also, the number of pillars for stairs is not limited to two, but if, for example, the pillar on the building body side is omitted and there is only one pillar, the end of the ladder is attached to the corridor side of the building to serve as the pillar. .

Note that the lowermost step plate 33 of the staircase portion 3 is provided as necessary. When the rib plates 9, 19, 29 are used as a structure, the rib plates 8, 18,
28 and 81 are not required.

(Effects of the Invention) As explained above, according to the present invention, the ends of the sasara and recessed boards are attached to the pillars, and both the upper and lower recessed boards also serve as support plates for the landing floorboards. This eliminates the need for supporting beams, which simplifies the structure, reduces manufacturing costs, and minimizes the installation area. According to the present invention, since the recess plate is arranged on the same plane as the web of the H-shaped steel column, the recess plate functions as a structural body of the staircase and is structurally integrated with the constituent members of the staircase. Contribute to Further, according to the present invention, both ends of the suspension are fixed to the opposing pillars, and the ends of the recessed boards are attached to the pillars, so that both the upper and lower recessed boards also serve as landing floor support plates. Stairs will be integrated. Further, according to the present invention, since the ribbed plates surrounding the upper and lower landing floor plates are provided, the integration of the stairs is further strengthened and installation to the building is facilitated.

[Brief explanation of drawings]

1 to 3 relate to the present invention; FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is a view of the staircase portions 4 and 5 seen from below, and
The figure is an enlarged sectional view showing another example of the support column, and FIG. 4 is a longitudinal sectional view showing a conventional example. 1, 2... Support, 11, 21... Web, 1
2, 22...flange, 3-6...stairs, 3
1, 41, 51, 61, 411, 511... Sasara, 32, 42, 43, 52, 53, 63... Kekomi board, 7, 17, 27... Landing, 71, 17
1,271...Landing floorboard, 8,18,28,8
1... Sasara plate.

Claims (1)

[Scope of Claims] 1. With the landing as the center, the ends of the vertically adjacent staircase sections are fixed to supports made of H-beam steel, and the top plate of the lower staircase section and the upper staircase section Each end of the lowermost part of the recessed board is fixed to the above-mentioned pillar, and both the upper and lower recessed boards also serve as support plates for the landing floorboard, and are adjacent to each other vertically with the above-mentioned landing in between. A steel staircase characterized by the fact that the recessed boards are placed on the same plane as the web of the support. 2. Fix both ends of the tops of the stairs that are vertically adjacent to each other around the landing to pillars that are located opposite each other, and connect the top plate of the lower stairs and the top of the upper stairs. A steel-frame staircase characterized in that each end of the lowermost step board is fixed to the above-mentioned support, and both the upper and lower support boards also serve as support plates for the landing floor board. 3 With the landing as the center, the ends of the vertically adjacent staircase sections are fixed to the pillars, and the top step board of the lower step section and the bottom step board of the upper step section are fixed. Each end of the board shall be fixed to the above-mentioned support, and both the upper and lower recessed boards shall also serve as support plates for the landing floorboard, and the upper and lower landing floorboards shall be surrounded by continuous length plates on both sides in the horizontal direction. A steel staircase featuring