JPH1122016A - Method for constructing staircase and floor panel equipped with staircase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staircase constructing method such that construction work can be performed efficiently on-site and the installed position of a staircase is not limited by the structure of a building. SOLUTION: An opening 11 is provided through the floor panel 1 of a third story, and a staircase-equipped floor panel A such that a staircase 2 is mounted in the opening 11 in such a way as to become coplanar with the floor panel 1 is shop fabricated. At a construction site, the building unit B of the second story is laid on top of the building unit C of the first story, and after the staircase-equipped floor panel A is installed on the building unit B of the second story, the staircase 2 is rotated downward using the upper end of the staircase 2 as the rotation axis, to join the lower end of the staircase 2 with the upper landing B4 of the building unit B of the second story.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for constructing a staircase and a floor panel with a staircase.

[0002]

2. Description of the Related Art Generally, stairs in a building such as a house are supported on a lower floor, but in a building having a height of three stories or more, two stairs are arranged at the same position in plan view. In this case, a stairwell is formed below the stairs on the upper floor, so that the stairs on the upper floor cannot be supported by the floor.
Therefore, the support structure for the stairs on the upper floor has a structure that bridges the stairs between the floor on the upper floor and the floor on the lower floor. In the case of this bridging structure, most of the stairs are assembled at the construction site, or the stairs are assembled in the factory in advance,
After installing the upper floor on the lower structure at the construction site,
The assembled stairs were put into the stairwell and attached.

[0003] However, if the stairs are assembled on the construction site, the number of construction steps on the site increases, which is inefficient. On the other hand, if the assembled stairs are inserted into the stairwell, the stairs may collide with the floor and be damaged.

Therefore, in a box-shaped building unit in which four pillars are connected by an upper beam and a lower beam, the upper end of the stair is connected to the upper beam of the building unit, and the lower end of the stair is connected to the lower beam. (See JP-A-7-292779).

[0005]

However, such a conventional stair construction method cannot be applied to a building unit having no upper beam, and even if the building unit has an upper beam, There was a problem that the position of the stairs was restricted by the position of the upper beam.

Therefore, the present invention focuses on the above-mentioned problems, and can efficiently perform construction on site, and furthermore, the position of the stairs is not restricted by the structure of the building. An object of the present invention is to provide a construction method and a floor panel with stairs that can be suitably used in the construction method.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, an opening is provided in a floor panel on an upper floor, and a stair is formed in the opening so as to be flush with the floor panel. At the construction site, install the upper floor panel on the lower floor structure at the construction site, rotate the stairs downward around the upper end of the stairs, and move the lower end of the stairs to the lower floor structure. According to a second aspect of the present invention, an opening is provided in the floor panel, and a stair is mounted in the opening so as to be rotatable around an upper end thereof.
According to the invention as set forth in claim 2, in the invention as set forth in claim 2, a stair holding means for holding a state of the stair is provided so that the stair is flush with the floor panel.

[0008]

According to the first aspect of the present invention, the stairs can be assembled in the factory and the upper end of the stairs can be attached to the floor panel. After installation on the stairs, it is only necessary to pivot the stairs downward about the upper end of the stairs and join the lower end of the stairs to the structure below.

In the construction site, the floor panel with stairs is installed on a structure on a lower floor at a construction site, and then the stairs are rotated downward about the upper end of the stairs, and the lower ends of the stairs are positioned on the lower floor. Construction on site is completed simply by joining to the structure.

In the floor panel with stairs according to the third aspect, if the stairs are held in the same plane as the floor panel by the stair holding means, stacking becomes possible, so that the space efficiency in storage and transportation is reduced. Good.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method for constructing a staircase according to an embodiment will be described in detail with reference to FIGS. 1 is a perspective view showing a floor panel with stairs used in the construction method of the embodiment, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is a plan view showing an upper end structure of the stairs, and FIG. 5 is a front view showing the mounting structure at the upper end of the stairs, FIG. 6 is a cross-sectional view showing the mounting structure at the upper end of the stairs, FIG. 7 is a perspective view showing the stacked state of the units, 8 is a perspective view showing a construction state of the stairs, FIG. 9 is a front view showing a winding state of the rope, FIG. 10 is a side view showing a positioning tool at the lower end of the stairs, and FIG. In the figure, 1 is a floor panel, and 2 is a stair.

First, the structure of a floor panel with stairs used in this construction method will be described with reference to FIGS. As shown in FIGS. 1 and 2, the floor panel with stairs A is provided with an opening 11 in the floor panel 1, in which the stairs 2 are rotatably mounted around the upper end thereof. Have been.

An iron plate 3 is slidably provided on the floor panel 1, and the lower end of the staircase 2 is held by the iron plate 3 so as to be flush with the floor panel 1. The position of the iron plate 3 is fixed by screws 31. That is, if the stairs 2 are held on the same plane as the floor panel 1, a plurality of staircase-equipped floor panels A can be stacked, so that space efficiency during storage and transportation is improved.

The stairs 2 are constituted by fixing a step plate 22 and a riser 23 between a pair of left and right slabs 21 and 21. The step 23 and the steps 22 and the riser 23 for several steps from the bottom are assembled at the construction site. Further, pipes 12 and 24 are fixed to the lower end of the staircase 2 and the opening 11 of the floor panel 1 in parallel at positions close to each other.

The mounting structure at the upper end of the staircase 2 is as shown in FIGS. 3 to 6, and the fixing bracket 1 welded to the floor beam 13.
4 and a fixing bracket 25 screwed to the slab girder 21 are rotatably fastened and fixed by bolts 15 and nuts 16. In addition, in the figure, 4 is a main pillar and 5 is a handrail.

Next, a method of constructing the stairs 2 in the three-story unit building will be described with reference to FIGS. In the figure, B is a building unit on the second floor, C is a building unit on the first floor, and an opening B1 is provided in a floor panel B1 of the building unit B on the second floor.
A lower landing B2, a staircase B3, and an upper landing B4 are provided continuously. A positioning metal fitting B5 for the staircase 2 is fixed to an edge of the upper landing B2 via a joint member B6.

At the construction site, the floor panel with stairs A
Is the building unit B on the second floor above the building unit C on the first floor
Are stacked and then installed on the building unit B on the second floor. Next, the rope 6 is passed through the pipe 12 fixed to the opening 11, and the rope 6 is wound around the pipe 24 fixed to the stairs 2. Then, while keeping the tension state of the rope 6 by the operator grasping the rope 6,
The iron plate 3 provided on the floor panel 1 is slid to a position away from the stairs 2, and then the rope 6 is gradually loosened, and the stairs 2 are slowly rotated downward. When the lower end of the stairs 2 contacts the upper landing B4 of the building unit B on the second floor in this way, the sasara girder 21 is fixed to the wall B7 of the building unit B on the second floor, and the stairs 2
And the upper landing B4 are fixed with screws. And
The steps 22 and risers 23 of several steps from above and the steps 22 and risers 23 of several steps from below are fixed to the slab 21 to complete the stairs 2.

In the above-described method of constructing the stairs 2, most of the stairs 2 can be assembled in the factory and the upper end of the stairs 2 can be attached to the floor panel 1. At the site, it is only necessary to rotate the stairs 2 downward about the upper ends of the stairs 2 and join the lower ends of the stairs 2 to the building units C on the first floor. That is, there is almost no need to assemble the stairs 2 at the construction site, and it is not necessary to put the stairs 2 into the stairwell, so that the construction at the site can be performed efficiently. Moreover, the upper end of the stairs 2 is attached to the floor panel 1 on the third floor in the factory, and the lower end of the stairs 2 is joined to the building unit B on the second floor at the construction site.
The mounting position of the stairs 2 is not restricted by the structure of the building.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and a design change or the like may be made without departing from the gist of the present invention. Even if present, it is included in the present invention. For example,
In the embodiment, the case where the stairs 2 are installed on the second floor portion of the three-story building has been described. However, the present invention is applied to the case where the stairs 2 are installed on the floor higher than the second floor in a building having a height of four stories or more. You may. Further, in the embodiment, the case where the stair holding member is the iron plate 3 slidable along the floor panel 1 has been described. However, the structure of the stair holding member is not limited to the embodiment. It may be constituted by a hook or the like rotatably attached. Further, in the embodiment, the example in which the lower end of the stairs 2 is joined to the upper landing B4 of the building unit B on the second floor is shown, but the lower end of the stairs 2 may be joined to the floor of the building unit B on the second floor. Good. Also, the joining structure is not limited to the embodiment.

[0020]

As described above, according to the first to third aspects of the present invention, there is no need to assemble the stairs at the construction site, and it is not necessary to put the stairs into the atrium, so that the construction at the site is not required. Can be performed efficiently. Moreover, since the upper end of the stairs is attached to the floor panel on the upper floor in the factory, and the lower end of the stairs is joined to the lower floor structure at the construction site, the mounting position of the stairs may be restricted by the structure of the building The effect that there is not is obtained.

According to the third aspect of the present invention, if the stairs are held on the same plane as the floor panel by the stair holding means, stacking becomes possible, so that space for storage and transportation can be provided. The effect that efficiency is improved is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a roof panel with stairs according to an embodiment.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view showing an upper end structure of the stairs.

FIG. 4 is a front view showing a mounting structure at the upper end of the stairs.

FIG. 5 is a plan view showing a mounting structure at the upper end of the stairs.

FIG. 6 is a sectional view showing a mounting structure of an upper end of a stair.

FIG. 7 is a perspective view showing a stacked state of units.

FIG. 8 is a perspective view showing a construction state of the stairs.

FIG. 9 is a front view showing a wound state of the rope.

FIG. 10 is a side view showing a positioning tool for stairs.

FIG. 11 is a perspective view showing a positioning tool for stairs.

[Explanation of symbols]

 A Floor panel with stairs 1 Floor panel 11 Opening 2 Stairs 3 Iron plate (stair holding means) B Second floor building unit C Third floor building unit

Claims (3)

[Claims] 1. An opening is provided in an upper floor panel, and a stair is installed in the opening so as to be flush with the floor panel. A method of constructing a stair, comprising: setting the upper end of the stair, rotating the stair downward about the upper end of the stair, and joining the lower end of the stair to a structure on a lower floor. 2. A floor panel with stairs, wherein an opening is provided in the floor panel, and a stair is rotatably mounted in the opening about an upper end thereof. 3. The floor panel with stairs according to claim 2, further comprising stair holding means for holding the state of the steps so that the steps are flush with the floor panel.