JPH02300459A - Stairs structure - Google Patents

Abstract

PURPOSE:To increase workability, by fitting open strings of both inside upstairs and downstairs to a splicing beam erected between outside upstairs open strings and downstairs open strings of a couple of columns and by forming the open strings combined by a landing and stair. CONSTITUTION:A splicing beam 4 is erected between an outside upstairs open strings 5 and an outside downstairs open strings 7 fitted to each of a couple of columns 2, 3. Next, an inside upstairs open string 6 and an inside downstairs open string are fitted to the splicing beam 4. Each of horizontal spaces, 10A, 10B, 12A, 12B to form a landing B and each of slanting parts 11, 13 to form a stairs are formed as a unit respectively in each of open strings 5, 6 for the upstairs and open strings 7, 9 for the downstrings. In this way, the time of construction can be decreased.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention makes it possible to form a folding staircase having a landing in the middle easily and with good construction efficiency, shorten the construction period of the staircase, and reduce costs. Regarding stair structure.

[Prior art]

To form a turning staircase connecting the lower and upper floors of a multi-story house, a landing is provided at the turning section.

In a staircase with such a landing, columns supporting the landing are erected at each corner of the landing, and treads are installed between the landing and the beams on the lower floor and between the landing and the beams on the upper floor. The bridge had stringers supporting it.

[Problem to be solved by the invention]

However, in a structure in which each corner of the ceremony area is supported by pillars, the number of pillars increases, which increases costs, and the appearance of the stairs deteriorates due to the large number of pillars. Furthermore, since the framework of the landing is formed by beams connecting the pillars, the structure of the framework is complicated and requires time and effort to process.

In order to solve the above-mentioned problem, the inventor conducted intensive research and, by integrally forming a horizontal part for forming a landing and a slope part for forming a staircase part on each stringer for ascending and descending, They discovered a staircase structure with a small number of components.

The present invention aims to reduce costs based on the above configuration,
The purpose is to provide a staircase structure that can also improve its appearance.

[Means for solving problems]

In order to achieve the above object, in the stair structure of the present invention, one of a pair of pillars erected at a distance has a horizontal part for forming a landing on one end side and a horizontal part for forming a landing on the other end side. Attach said one end of the stringer on the outer floor having an upwardly extending sloped part, and have a horizontal part for forming a landing on one end side and a downwardly sloped part extending downwards on the other end side to the other column. Moreover, while attaching the one end of the stringer on the outer lower floor which is parallel to the stringer on the upper floor, and connecting the horizontal parts of the stringer on the outer floor and the stringer on the outer lower floor with a splice, one end is attached. A horizontal part for forming a landing on one side and extending upwardly on the floor at the other end (one end of the stringer on the inner floor having a diagonal part, a horizontal part for forming a landing on one end side, and the other end) The one end of an inner downstairs stringer having an inclined portion extending downwardly toward the floor is connected to the connecting beam.

[Effect]

Since the stringer on the outer floor and the stringer on the outer lower floor are attached to each of the pair of pillars, and the stringers on the upper floor and the stringer on the lower floor are connected near the pillars, The outer structure of the staircase can be formed by the members, and a staircase with a simple structure can be formed.

In addition, each stringer on the upper and lower floors has a horizontal part for forming a landing and an inclined part for forming a staircase part, so it is possible to assemble the landing and stairs by simply erecting a pair of pillars. It is possible to form folded stairs easily and in a short period of time.

[Embodiment] Hereinafter, an embodiment of the present invention will be described based on the drawings, taking as an example a case where the staircase is formed as a staircase for a multi-story apartment building as shown in FIGS. 18 and 19.

In this embodiment, the staircase S is arranged in the center of the house, and is formed as a bending staircase that connects the upper first floor C, which is on the same plane as the entrance, and the second floor floor, and has a landing B in the middle. be done. ``The stair structure of the present invention has two pillars 2.3, a horizontal part 10, and an inclined part 11 extending upward from the horizontal part 10, and has stringers 5 on the outer floor facing each other, and stringers 5 on the inner floor. An outer downstairs stringer 7 and an inner downstairs stringer 9, which have an upper floor stringer 6, a horizontal part 12, and an inclined part 13 extending downward from the horizontal part 12, are arranged facing each other.
and a connecting beam 4.

The columns 2.3 are arranged at intervals, and in this embodiment, they are arranged independently from the pillars for the frame of the house for the purpose of constructing stairs, and are erected on the column foundation Fl. 2.3 is formed into a hollow square cross section.

On one column 2 there is a stringer 5 on the outer floor, and on the other column 3
The stringers 7 on the outer floor below are connected to the stringers 7 on the outer floor, respectively, and the horizontal parts 10 and 12 of the stringers 5 on the outer floor and the stringers 7 on the outer floor are connected by the connecting beam 4. 4, the inner upper storey stringer 6 runs parallel to the outer upper storey stringer 5, and the inner lower storey stringer 9 runs parallel to the outer lower storey stringer 7 in each horizontal section 10. .12
One end of the is connected.

As described above, the stringer 5 on the outer floor has a horizontal portion 10A on one side of the pillar 2, and an inclined portion 11 extending diagonally upward from the horizontal portion 10A on the other end side, forming an L-shape. It is a plate that can be bent. In addition, the stringer 6 on the inner floor is opposite to the stringer 5 on the outer floor, except that its horizontal portion 10B is shorter than the horizontal portion 10A of the stringer 5 on the outer floor. It has an inclined portion 11 at a position and is formed in a shape substantially symmetrical to the stringer beam 5 on the outer floor.

The stringers 5.6 on the outer and inner floors have their slopes 11
．． Each tip of 11 extends near the upper floor beam.

The upper floor beam is made of square steel with flanges at the top and bottom of the web 26.

The stringer 5 on the outer floor is bolted at one end of its horizontal portion 10A to a connecting fitting 22 projecting indoors from the pillar 2.

On the other hand, the connection fitting 2 is attached to the outer surface of the web of the floor beam.
A temporary connecting fitting 27 is disposed at a position facing 2.

The stringer connection fitting 27 is attached to the web 26 of the floor beam and has a T-shape with an overhang piece 30 extending outward from a mounting piece 29 bolted to the web 26. Each end of the sloped portion of the upper stringer, ie, the other end, is fixed to the overhang piece 30 by bolts as shown in FIG.

As described above, the outer downstairs stringer 7 has a horizontal portion 12A on the other pillar 3 side and an inclined portion 13 extending obliquely downward from the horizontal portion 12A on the other end side, and is folded into an L shape. It is a bendable plate body, and the horizontal part 12B of the inner downstairs stringer 9 is the same as the horizontal part 12A of the inner downstairs stringer 7.
Apart from being smaller in size than the stringer 7 on the outer floor, it has an inclined portion 13 at a position opposite to the stringer 7 on the outer floor, and is formed in a substantially symmetrical shape with the stringer 5 on the outer floor.

Further, the other ends of the sloped portions 13.13 of the outside and inside downstairs stringers 7.9 extend near the ground G.

One end of the horizontal portion 12A of the outer downstairs stringer 7 is bolted to a connecting fitting 22 that projects from the pillar 3 toward the indoor side.

On the other hand, a stair base RF2 for attaching a stringer is provided on the ground G as shown in FIG. 1.13, and a flat base metal fitting 41 anchored to the stair base F2 is attached.

At the other end of the inclined part 13 of the stringer 7 on the outer floor, there is a first
As shown in FIG. 3, the connecting piece 42 extending horizontally is pushed out to the side, and the bolt provided upright on the base metal fitting 41 is inserted into the bolt hole provided in the connecting piece 42, and then secured with a nut. The other end of the outside lower-stair stringer 7 is fixed to the stair foundation F2.

As shown in Fig. 1.2.3.4, the connecting beam 4 includes a substrate 210 made of a vertically oriented rectangular plate between the stringer 5 on the outer floor and the stringer 7 on the outer lower floor. A lug 25.25 is provided that protrudes in a direction perpendicular to the lug 25.25.
It is constructed by aligning the stringer 5 on the outer floor and the stringer 7 on the outer floor along each opposing surface and fixing it with bolts.

In addition, the joint beam 4 protrudes inward from the base plate 21 and connects the ends of the stringers 6 on the upper floor and the stringers 9 on the lower floor.
In this embodiment, a connecting fitting 24 for connecting the landing extension portion Bl is provided protruding from the outer surface of the TE slope 21.

The end of the horizontal portion 10B, that is, one end of the stringer 6 on the inner floor is fixed to the connecting beam 4 by bolting to the stringer mounting bracket 23 as shown in FIG. 7, while the end of the inclined portion 11 That is, the other end is fixed to the upper floor beam via the stringer connecting fittings 27 in the same way as the stringer 5 on the outer floor.

Also, the horizontal part 12B which is one end of the inner downstairs stringer 9
The end of the slanted part 13 is fixed to the connecting beam 4 by bolting to the stringer mounting bracket 23 in the same way as the stringer 6 on the inner floor, and the other end of the sloped part 13 is fixed to the stringer 4 on the outside downstairs. Like the girder 7, it is fixed to the stair foundation F2 via the foundation metal fittings 41.

On the inclined part 11 of the stringer 5 on the outer floor, a plurality of tread mounting brackets 33, which protrude inward and support the ends of the treads 44, are arranged horizontally to match the stair pitch and It is provided in a shape. On the other hand, on the outer surface of the inclined portion 11,
A plurality of vertically oriented handrail fittings 34-- are attached at intervals, and the handrail K can be attached using the handrail fittings 34.

The sloped part 11 of the stringer 6 on the inner floor is formed symmetrically with the stringer 5 on the outer floor, and has a tread mounting bracket 33- projecting inward and a handrail mounting bracket 34 projecting outward. provided.

A support piece 36 projecting inward and horizontally is provided on the horizontal portion 10A of the stringer 5 on the outer floor at a distance slightly from the upper edge of the horizontal portion 10A. In addition, in the horizontal part 10B of the stringer 5 on the inner floor, the structural support piece 37 is attached to the horizontal part 1.
A recess 39 is provided by protruding outward from 0B and cutting out the upper part of the locking piece 37.

The above-mentioned inclined parts 13 of the outside and inside downstairs stringers 7.9
．． 13 is provided with tread plate mounting brackets 33.
A handrail mounting fitting 34- having the above configuration is provided on each outer surface of the handrail.

Each of the horizontal parts 12 of the outside and inside downstairs stringers 7.9
A, 12B has supporting pieces 36.37 similar to those of the stringers 5.6 on the upper floor extending to the side, and in the horizontal part 12B of the inner stringer 9 on the lower floor, the upper part of the locking piece 37 is cut out. By doing so, a recess 39 similar to the stringer 6 on the floor is provided.

In addition, between the stringers 6 on the inner upper floor and the stringers 9 on the lower floor on the inside, there is a connecting metal fitting in the horizontal part 10B, 12B of the double fold 6.9, which forms a mouth shape as shown in Fig. 14.15. 49
Connect by.

At each inclined part 11.13 of the stringer 5.6 on the upper floor and the stringer 7.9 on the lower floor, the opposing tread mounting brackets 33.
A step board 44 as shown in FIG. 16 is installed between the steps 33.

The tread plate 44 is supported and fixed by the tread plate mounting brackets at both ends, and once the plate 46 is inserted into the step F245, the upper end of the inserted temporary 46 hangs down from the step plate 45, and the other part of the step plate 45 is suspended. A rising piece 47 is raised at the end.

The treads 44 are connected to each other by fixing the treads 7+N←to and 1.16 to form steps.

Mortar M is placed on top of the nine-tier plate 45 and finished.

are held by the locking pieces 36, 36 arranged on opposing surfaces of the outer upper floor stringer 5 and the outer lower floor stringer 7, and the upper floor stringer 6, with the middle part inside. A plurality of receiving frames 16 are fitted into respective recesses 39, 39 of the outer, downstairs stringer 9 and placed on the support pieces 37, 37.
・But the rack is handed over.

The receiving frame 16 includes a board part 17 supported at both ends by the support pieces 36, and an M side edge 17 that is perpendicular to the stringers 5.9 of the M board part.
a, standing piece L9.1 with a small elevation that rises and continues at 17a
It has a 9 in the shape of a mouth.

In addition, the support frame 16 has base reinforcing bars 2 arranged in a grid pattern on the top surface of the base plate 17.
0 is arranged to reinforce the mortar M placed on the receiving frame 16.

In this way, a landing B that is integrally connected to the inclined part 11.13 is formed by each of the horizontal parts 10.12 and the receiving frame 16 of the pair of upper-floor stringers 5.6 and the pair of lower-floor stringers 7.9.

Further, the joint beam 4 is connected to the Wc connecting metal fittings 4 arranged on the outer surface.
- is connected to a landing extension part B1 framed in a Y-shape.

In addition, in the staircase structure of the present invention, the stringer girder 7.9 on the lower floor
By connecting the other end to the middle floor beam, it can be used for stairs connecting the middle and upper floors of multi-story houses, and can also be used for connecting beams, stringers above floors, For the stringers, it is also possible to use shape +4 such as channel steel or I-beam steel instead of the plate, and the present invention can be modified into various embodiments.

〔Effect of the invention〕

The stair structure of the present invention, like a ridge, is constructed by installing a joint beam between the stringer on the outer floor extending from each of a pair of columns and the stringer on the lower floor on the outside, and In addition to attaching the stringer girder, the stringer girder on the inside and outside of the lower floor, the stringer girder is formed as one piece with the landing and the staircase part, so it is sufficient to erect a pair of pillars, making it possible to easily and inexpensively form a turn-around staircase. It is possible to shorten the construction period and reduce costs, and the simplicity of the structure improves visibility.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a front view showing a joint beam, Fig. 3 is a plan view thereof, Fig. 4 is a side view thereof, and Fig. 5 is an outside floor view. Figure 6 is a plan view of the stringer, Figure 7 is an exploded perspective view showing the connections between the columns, splices, and the stringer on the floor above, and Figure 8 is the stringer on the floor and the stringer on the floor above. Fig. 9 is an exploded perspective view showing the connection with the beam, Fig. 9 is a front view showing the outside downstairs stringer, Fig. 10 is its plan view, Fig. 1
Figure 1 is a front view showing the horizontal part of the inner stringer on the lower floor, Figure 12 is its plan view, Figure 13 is an exploded perspective view showing the connection between the stringer on the lower floor and the stair foundation, and Figure 14 is the connection. FIG. 15 is a front view showing the metal fittings, FIG. 15 is a plan view thereof, FIG. 16 is a sectional view showing the attachment of the stringer and the tread, FIG. 17 is a plan view showing the staircase formed by the structure of the present invention, and FIG. The figure is a front view showing an example of a house in which the structure of the present invention is adopted;
FIG. 9 is a cross-sectional view taken along the XX line. 2.3.-Column, 4.--Connection beam, 5-.Stringer girder on the outer floor, 6-.Stringer girder on the inner floor, 7-..Stringer girder on the outer floor below.9-. - Inner downstairs stringer, 10A, IOB, 12A, 12B - Horizontal part, 11.1
3.--Slope part, B.--.Landing. Patent Applicant National Housing Industry Co., Ltd. Agent Patent Attorney Tadashi Naemura Figure 6〆゛! 1' 1δA Raku 7 Figure 1 F 1115 Figure 14 Figure 1116 Figure 18r: 1A x41 X+I Figure 19 G

Claims (1)

[Claims] 1 A stringer on an outer floor that has a horizontal part for forming a landing on one end of a pair of pillars erected at a distance and a sloped part extending upward to the floor on the other end. An outer lower-floor stringer that is attached to one end and has a horizontal part for forming a landing on one end side and a downwardly inclined part extending downstairs on the other end side, parallel to the above-mentioned upper-story stringer. At the same time, the horizontal part of the stringer on the outer floor and the stringer on the outer lower floor are connected by a joint beam, while the horizontal part for forming a landing is attached on one end, and the stringer on the outer floor is attached on the other end. said one end of the inner staircase stringer having a sloped part extending upward to the bottom; and an inner downstairs stringer having a horizontal part for forming a landing on one end side and a sloped part extending downward to the bottom floor on the other end side. and the one end of the stairway connected to the joint beam.