JPH059582B2 - - Google Patents

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 workability, 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.

For stairs with such landings, 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. It was spanned with supporting girders.

[Problem to be solved by the invention]

However, in the case of a structure in which each corner of the landing is supported by pillars, the number of pillars increases, leading to increased costs, and the appearance of the staircase is degraded 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 provide a staircase structure based on the above-mentioned structure, which can reduce costs and improve appearance.

[Means for solving problems]

In order to achieve the above object, the stair structure of the present invention has a horizontal part for forming a landing on one end of a pair of pillars erected at a distance, and a horizontal part for forming a landing on the other end. Attach one end of the stringer on the outer floor having a sloped part extending upward to the pillar, and have a horizontal part for forming a landing on one end side and a downward sloped part extending downward to the other end on the other end. Moreover, while attaching the one end of the outer lower floor stringer parallel to the upper floor stringer, and connecting the horizontal portions of the outer lower floor stringer and the outer lower floor stringer with a connecting beam, Said one end of the stringer on the inner floor, which has a horizontal part for forming a landing on one end side and a slope part extending upward on the floor on the other end side, and has a horizontal part for forming a landing on one end side and the other end. The one end of the inner downstairs stringer having an inclined part extending downwardly toward the floor on the side is connected to the splicing beam, and the stringer on the outside floor, the outer downstairs stringer, and the inner story A support frame is placed between each horizontal part of the upper stringer and the lower stringer on the inside.

[Effect]

outer storey stringers on each of a pair of columns;
Since the outside stringer on the lower floor is attached and the stringer on the upper floor and the stringer on the lower floor are connected near the pillars, the external structure of the staircase can be formed with the small number of members mentioned above, resulting in a simple structure. can form stairs.

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 time.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings, taking as an example a case where it is formed as a staircase for a multi-story housing complex 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 first-floor earthen floor C on the same level as the entrance and the second-floor floor D, and has a landing B in the middle. .

The stair structure of the present invention includes two pillars 2 and 3, a horizontal part 10, and an inclined part 1 extending upward from the horizontal part 10.
1 and are arranged facing each other, the outer storey stringer 5, the inner storey stringer 6 and the horizontal part 1.
2 and an inclined part 13 extending downward from the horizontal part 12.
The outer lower floor stringers 7, the inner lower floor stringers 9, and the joint beams 4 are arranged facing each other.
and.

The pillars 2 and 3 are arranged at intervals, and in this embodiment, they are arranged independently from the pillars for the frame of the house for constructing stairs, and are erected on the pillar foundation F1. 2 and 3 are formed into hollow rectangular cross sections.

The stringer 5 on the outer floor is connected to one column 2, and the stringer 7 on the outer floor is connected to the other column 3, and the stringer 5 on the outer floor and the stringer 7 on the outer floor are connected to the other column 3. The horizontal parts 10 and 12 are connected by a connecting beam 4, and the connecting beam 4 is connected to an inner storey stringer 6 in parallel with an outer storey stringer 5.
However, in parallel with the outer lower floor stringer 7, the inner lower floor stringer 9 has its respective horizontal parts 10 and 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, and has an L-shape. It is a plate that can be bent. In addition, the inner staircase stringer 6 is located opposite to the outer staircase stringer 5, except that its horizontal portion 10B is shorter than the horizontal portion 10A of the outer staircase stringer 5. It has an inclined part 11 at the top and is formed in a shape that is approximately symmetrical to the stringer beam 5 on the outer floor.

The tips of the sloped parts 11, 11 of the outer and inner upper floor stringers 5, 6 extend near the upper floor beam L.

The floor beam L is made of I-shaped steel with flanges on the top and bottom of the web 26.

The stringer 5 on the outer floor has its horizontal part 10A
A connecting fitting 2 whose one end protrudes from the pillar 2 toward the indoor side.
Bolted to 2.

On the other hand, on the outer surface of the web of the floor beam L, there is a plate connecting fitting 2 at a position facing the connecting fitting 22.
7 is placed.

The stringer connecting fittings 27 are the web 26 of the upper floor beam L.
An overhanging piece 3 that overhangs outward from a mounting piece 29 attached to the web 26 and bolted to the web 26
0, and each end of the sloped part of the stringer on the outer floor, that is, 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 1 extending obliquely downward from the horizontal portion 12A on the other end side.
3, and is a plate body that is bent into an L-shape, and the horizontal portion 12B of the inner downstairs stringer 9 is formed to be smaller than the horizontal portion 12A of the inside downstairs stringer 7. The other has an inclined portion 13 at a position opposite to the outer downstairs stringer 7, and is formed in a substantially symmetrical shape with the outer downstairs stringer 7.

Further, the other ends of the sloping portions 13, 13 of the outside and inside downstairs stringers 7, 9 extend near the ground G.

The outer downstairs stringer 7 has its horizontal part 12A.
A connecting fitting 2 whose one end protrudes from the pillar 3 toward the indoor side.
Bolted to 2.

On the other hand, on the ground G, as shown in FIGS. 1 and 13, a stair foundation F2 for attaching a stringer is provided, and a flat foundation metal fitting 4 is anchored to the stair foundation F2.
1 is attached.

At the other end of the inclined part 13 of the outer, downstairs stringer 7, there is a connecting piece 42 that extends horizontally, as shown in FIG.
At the same time, the other end of the outer downstairs stringer 7 is inserted by inserting a bolt installed vertically into the base metal fitting 41 into the bolt hole provided in the connecting piece 42 and securing it with a nut. It is fixed to the stair foundation F2.

The joint beam 4 is as shown in Figures 1, 2, 3, and 4.
Lug pieces 25, 2 protrude perpendicularly to the substrate 21 at both ends of the substrate 21, which is a vertically oriented rectangular plate, between the stringer 5 on the outer floor and the stringer 7 on the outer floor.
5 is provided, and the lug pieces 25, 25 are placed along the opposing surfaces of the stringer 5 on the outer floor and the stringer 7 on the outer lower floor, and are secured by bolts.

The joint beam 4 protrudes inward from the base plate 21, and has two stringer mounting brackets 23, 23 that connect the ends of the stringer 6 on the upper floor and the stringer 9 on the lower floor.
On the other hand, in this embodiment, a connecting fitting 24 for connecting the landing extension part B1 is provided protruding from the outer surface of the board 21.

The end of the horizontal part 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, while the slanted part 1
1, that is, the other end, is fixed to the upper floor beam L via a stringer connecting fitting 27, similar to the outer upper floor stringer 5.

In addition, the end of the horizontal portion 12B, which is one end of the inner downstairs stringer 9, is fixed to the connecting beam 4 by bolting to the stringer mounting bracket 23 in the same way as the inner upstairs stringer 6. Slanted part 13 which is the end
The end portion of is fixed to the stair foundation F2 via the foundation metal fittings 41, similarly to the outside downstairs stringer 7.

On the inclined part 11 of the stringer 5 on the outer floor, a plurality of tread mounting brackets 33 projecting inward and supporting the end of the tread 44 are horizontally aligned with the stair pitch and attached to the stair. It is provided in a shape.
On the other hand, a plurality of vertically oriented handrail fittings 34 are attached to the outer surface of the inclined portion 11 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 extending inwardly and a handrail mounting bracket 34 projecting outward. will be provided.

In the horizontal part 10A of the stringer 5 on the outer floor,
A support piece 36 projecting inward and horizontally is provided slightly away from the upper edge of the horizontal portion 10A. In addition, in the horizontal part 10B of the stringer 6 on the inner floor, a support piece 37 having the same height as the support piece 36 is attached to the horizontal part 10B.
The supporting piece 3 extends outward from B.
A recess 39 is provided by cutting out the upper part of 7.

Each of the sloped parts 13, 13 of the outside and inside downstairs stringers 7, 9 is provided with tread mounting brackets 33, similar to those of the upstairs stringers 5, 6, facing each other, while the sloped parts 13, Handrail mounting fittings 34 having the above-mentioned configuration are provided on each outer surface of the handrail 13.

The horizontal portions 12A, 12B of the outer and inner downstairs stringers 7, 9 are connected to the upper floor stringers 5,
The support pieces 36 and 37 similar to 6 are extended to the side, and the upper part of the support piece 37 is cut off in the horizontal part 12B of the stringer 9 on the lower floor on the inside, thereby forming a recess similar to that of the stringer 6 on the upper floor. 39 are provided.

In addition, the horizontal part 10B of both girders 6 and 9 is connected between the stringer 6 on the inner floor and the stringer 9 on the inner lower floor.
12B, they are connected by a U-shaped connecting fitting 49 as shown in FIGS. 14 and 15.

The stringers 5 and 6 on the floor and the stringers 7 on the lower floor,
In each inclined portion 11, 13 of 9, a tread plate 44 as shown in FIG. 16 is installed between opposing tread plate mounting fittings 33, 33.

The tread plate 44 is supported at both ends by tread plate mounting brackets and is fixed to the tread plate 45. When the tread plate 46 is suspended, the upper end of the tread plate 46 hangs down from the tread plate 45, and the tread plate 45 is suspended. A rising piece 47 is raised at the other end.

The tread plate 44 includes a raised piece 47 and a tread plate 4 located above the tread plate 44, as shown in FIGS. 1 and 16.
By bolting the lower end of the stub plate 46 of No. 4, they are connected to form a step. Step board 45
Mortar M is placed on top and finished.

String stringers 5 and 6 on the floor, stringers 7 and 9 on the bottom floor
On each of the horizontal parts 10A, 10B, 12A, 12B, both ends are held by support pieces 36, 36 disposed on opposing surfaces of the outer upper floor stringer 5 and the outer lower floor stringer 7. At the same time, the intermediate part is connected to the inner upper floor stringer 6 and the inner lower floor stringer 9.
The support pieces 37, 39 are fitted into the respective recesses 39,
A plurality of receiving frames 16 placed on 37 are bridged.

The receiving frame 16 includes a base plate 17 supported at both ends by the supporting pieces 36, and vertical pieces 19, 19 of a small height that rise and are continuous at both side edges 17a, 17a perpendicular to the stringers 5, 9 of the base plate. It forms a U-shape.

Further, base reinforcing bars 20 are arranged in a grid pattern on the upper surface of the base plate 17 of the receiving frame 16 to reinforce the mortar M placed on the receiving frame 16.

In this way, each of the horizontal parts 10, 12 of the pair of upper stringers 5, 6 and the pair of lower floor stringers 7, 9
A landing B that is integrally connected to the inclined parts 11 and 13 is formed by the receiving frame 16.

Further, the connecting fittings 24 disposed on the outer surface of the joint beam 4 are connected to a landing extension part B1 framed in a Y-shape.

In addition, in the staircase structure of the present invention, by connecting the other ends of the stringers 7 and 9 on the lower floor to the floor beams on the middle floor, it is possible to create a staircase that connects the middle floor and the upper floor of a multi-story house. In addition, it is also possible to use shapes such as channel steel and I-beam steel instead of plates for the joint beams, stringers above stories, and stringers below stories. It can be transformed into various forms.

〔Effect of the invention〕

As described above, the stair structure of the present invention is constructed by constructing 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 attaching the stringer on the inner floor to the joint beam. In addition to attaching the stringers and the stringers on the inside and outside of the lower floors, the stringers are integrally formed with the landing and the stairway, so it is sufficient to erect a pair of pillars, making it possible to easily and inexpensively form a turn-around staircase, reducing the construction period. It is possible to reduce the time and cost, and the simple configuration improves the appearance.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a front view showing the joint beam, Figure 3 is its plan view,
Figure 4 is a side view, Figure 5 is a front view showing the stringers on the outer storey, Figure 6 is its plan view, and Figure 7 shows the connections between the columns, joints, and stringers on the upper floor. Figure 8 is an exploded perspective view showing the connection between the stringer on the floor and the upper floor beam, Figure 9 is a front view showing the outside stringer on the lower floor, and Figure 10 is its plan view. 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. Figure 19 is a front view showing an example of a house in which the structure of the present invention is adopted.
The figure is a cross-sectional view taken along the line XX. 2, 3... Column, 4... Joint beam, 5... String girder on the outside floor, 6... String girder on the inside floor, 7
...Outer downstairs stringer, 9...Inner downstairs stringer, 10A, 10B, 12A, 12B...
Horizontal part, 11, 13... Slope part, B... Landing.

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 upwards on the other end. An outer lower floor with said one end attached to the other column, which has a horizontal part for forming a landing on one end side and a downwardly inclined part extending downstairs on the other end side, and is parallel to the stringers of said outer floor. Attach one end of the stringer, and connect the horizontal parts of the stringer on the outer floor and the stringer on the outer lower floor with a joint beam, and at the same time, install a horizontal part for forming a landing on one end and on the other end. said one end of the stringer on the inner floor which has a sloped part extending upwardly toward the upper floor; and an inner lower floor which has a horizontal part for forming a landing on one end side and a sloped part extending downwardly toward the lower floor at the other end. and the one end of the stringer to the splice beam, and each horizontal stringer of the outside upper story stringer, the outer lower story stringer, the inner story upper stringer, and the inner lower story stringer. A stair structure with a support frame spanning the upper part.