JPH0734628A - Staircase and construction method therefor - Google Patents

Abstract

PURPOSE:To use a steel staircase as a temporary staircase at the time of constructing a building and to accomplish wood finishing for the staircase without any influence of the manufacturing accuracy of the steel staircase. CONSTITUTION:A wooden staircase 14A is provided on a steel staircase 3A. The string 15A of the wooden staircase 14A is supported on a building frame independently from the steel staircase 3A, and the respective step plates 5 of the steel staircase 3A are covered with the step plates 16 of the each step. The upper and lower ends of the inclined staircase frame 4A of the steel staircase 3 are joined to the building frame in such a manner as to be removed downward. The steel staircase 3A is previously installed and used as a temporary staircase for the subsequent work. At the time of a carpenter's work, the wooden staircase 14A is installed on the building frame to complete a staircase 2A. The steel staircase 3A is hereafter removed from the building frame below the wooden staircase 14A, and reused for constructing a staircase for another building. At the time of erection, in the case of carrying a large-sized material to the upper stage, the steel staircase 3A used as a temporary staircase is removed so as to facilitate a carry-in work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor staircase provided in a steel structure house or other buildings and a method for constructing the same.

[0002]

2. Description of the Related Art Conventionally, in a building such as a house having a steel frame structure, an indoor staircase may be a wooden staircase, and a wooden decorative stepboard or a riser board may be provided on a steel staircase. In the case of wooden stairs, in order to prevent damage and stains during construction, it will be constructed during the woodworking process of the building. In the case of steel stairs, the steel part is constructed at the time of erection, and the decorative plate is attached during woodworking.

[0003]

In the case of wooden stairs, it is not provided until the construction progresses to a certain degree as described above.
A ladder must be used to move between the upper and lower floors during construction up to that point. Therefore, the construction is inconvenient, the work efficiency is low, and the safety of the worker is poor. In the case of steel stairs, since it is installed during construction, it is convenient to move up and down floors during construction, and workability and safety of construction work are good. However, since the decorative stairs and riser plates are attached to the stairs of each step of the steel stairs, the decorative stairs cannot be mounted as they are unless the steel stairs are manufactured with high accuracy. For this reason, in many cases, a correction process is required at the site when the decorative plate is attached, and the finishing process such as attaching the decorative plate is troublesome. Further, in the case of a conventional steel staircase, the staircase is attached to the building frame at the time of erection. Therefore, when carrying a large-sized material to the upper floor, the staircase may be an obstacle and difficult to carry in.

An object of the present invention is to provide a stairway which can be used as a temporary staircase during construction, and which can finish the woodwork of the staircase without being affected by the manufacturing accuracy of the steel staircase, and a method for constructing the staircase. is there. Another object of the present invention is to
To provide a staircase that can reuse steel stairs and that can carry in large materials from the floor opening of the stairway part by temporarily removing the steel staircase even after the steel staircase is once installed, and a construction method therefor. Is.

[0005]

The staircase of the present invention comprises a wooden staircase provided above a steel staircase. The wooden stairs shall have side girders that are supported by the building frame independently of the steel stairs, and have step plates that cover the step plates of each step of the steel stairs.

In the stairs, the upper and lower ends of the inclined stair frame of the steel stairs may be detachably joined downward to the building frame.

The method for constructing a staircase according to the present invention comprises the steps of installing a steel staircase in a building frame, providing a wooden staircase over the steel staircase, and moving the steel staircase down to the wooden staircase. And the process of removing from. Wooden stairs shall have side girders supported by the building frame independently of steel stairs.

[0008]

In this staircase, only the steel staircase can be attached to the building frame at the time of erection, and this can be used as a temporary staircase for subsequent work, so that workability and safety are improved. Further, since the steel stairs and the finished wooden stairs are installed in the building frame independently of each other, the finish does not depend on the manufacturing accuracy of the steel stairs. Since the steps of the wooden stairs are provided so as to cover the steps of the steel stairs, the steel stairs and the wooden stairs are vertically stacked, but no extra installation space is required. If the steel staircase can be removed downwards, the steel staircase can be reused in another building.
In addition, when a large-sized material is carried in to the upper floor, the carrying-in work can be easily performed by temporarily removing the steel stairs from the building frame.

In addition, the method of constructing this staircase is independent from the steel staircase previously installed in the building frame, a wooden staircase is subsequently installed in the building frame structure, and finally the steel staircase is placed below the wooden staircase from the building frame structure. Since it is removed, the installation work is easy, and as described above, the steel stairs before mounting the wooden stairs can be used as temporary stairs. Also, the steel stairs that are removed after the wooden stairs are installed can be reused to build another staircase.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. The stairs of this embodiment are indoor stairs installed from the first floor 1F to the second floor 2F in the stairwell in the building as shown in the plan view in FIG. 3, and FIG. 1 shows the landings 1 to 2F. 2 shows the upper half staircase 2A, and FIG. 2 shows the lower half staircase 2B from the first floor 1F to the landing 1.

In the upper half staircase 2A of FIG. 1, 3A is a steel staircase, which is constructed by welding a step plate 5 of each step between a pair of left and right inclined staircase frames 4A, 4A made of channel steel. It The step plate 5 may be joined to the stair frames 4A, 4A so as to be disassembled with the bolt 6 as shown in FIG.
The upper end of the staircase frame 4A is joined to the stairwell floor beam 8 on the second floor, which is a part of the building frame, via a connecting fitting 7.
That is, as shown in the side sectional view and the front sectional view in an enlarged manner in FIGS.
The L-shaped mounting board 7a is joined to the floor beam 8 for stairs on the second floor made of channel steel by bolts 9 and 10, and the L-shaped mounting board 7a has a mounting piece 7b projecting from the lower end thereof. The upper end of the staircase frame 4A is joined by a bolt 6.

The lower end of the stair frame 4A is shown in FIG.
As shown in an enlarged side sectional view in (C), it is joined to a landing frame 12 made of channel steel, which is a part of the building frame, through an L-shaped connecting fitting 11. L-shaped connecting fitting 11
1 piece 11a is joined to the lower end of the staircase frame 4A by welding, and another piece 11b of the connecting fitting 11 is joined to the end portion of the landing frame 12 by a bolt 13.

On the other hand, in the upper half staircase 2A of FIG.
A is a wooden staircase, which is arranged above the steel staircase 3A. This wooden staircase 14A is a pair of left and right side girders 15A, 15A which are supported by the building frame independently of the steel staircase 3A.
And a step plate 16 and a riser plate 17 for covering the step plates 5 of the respective steps of the steel staircase 3A. The upper end of the side girder 15A of the wooden stairs 14A is fixed to the end of the second floor panel 18 which is a part of the building frame as shown in FIG. 4 (A), and the lower end of the side girder 15A is shown in FIG.
Landing floor panel 1 which is a part of the building frame as in (C)
It is fixed to the end of 9.

The structure of the lower half staircase 2B in FIG. 2 is almost the same as that of the upper half staircase 2A, and is composed of a steel staircase 3B and a wooden staircase 14B arranged above it. Steel stairs 3B
Is a pair of left and right inclined stair frames 4 made of channel steel
It is configured by welding or joining the step plates 5 of each step between B and 4B, and the upper end of the stair frame 4B is an end of the landing frame 12 which is a part of the building frame through the connecting metal fitting 20. Joined to the section. That is, FIG.
As shown in the enlarged front and side sectional views of FIGS. 5A and 5B, the connecting fitting 20 is joined to the lower end of the landing frame 12 by welding, and the connecting fitting 20 is connected to the stair frame. The upper end of 4B is joined by a bolt 21.

The lower end of the staircase frame 4B is connected to the first floor floor base 23, which is a part of the building frame, through a connecting fitting 22.
To be joined to. That is, as shown in an enlarged side sectional view in FIG. 5C, the connecting fitting 22 has a lower end lateral piece 22a.
Is joined to the first floor floor bundle base 23 by anchor bolts 24, and the lower end of the stair frame 4B is joined by bolts 25 to the upper end of the vertical piece 22b of the connecting fitting 22. On the second floor and above, the lower end of the staircase frame 4B has a connecting fitting 22A welded to the stairwell floor beam 7 as shown in an enlarged side sectional view of FIG. 5D.
Are joined by bolts 25A.

Also, the wooden staircase 1 of the lower half staircase 2B in FIG.
4B has the same structure as that of the upper half staircase 2A. That is, the wooden stairs 14B include a pair of left and right side girders 15B and 15B that are supported by the building frame independently of the steel stairs 3B, and a staircase 16 and staircases that cover the staircases 5 of the respective steps of the steel staircase 3B. It has a plate 17. The upper end of the side girder 15B of the wooden stairs 14B is fixed to the end of the landing floor panel 19 which is a part of the building structure as shown in FIG. 5 (B), and the lower end of the side girder 15B is shown in FIG. 5 (C). As shown in FIG. 5 (D), it is fixed to the first floor panel 18A or the end of the floor panel 18 concerned.

Next, the procedure for constructing the stairs will be described. As for the upper half staircase 2A, first, as shown in FIG. 7, the steel staircase 3A is moved from the floor beam 8 for the stairwell on the second floor to the landing frame 12.
Install over. In this case, the landing frame 12
Is supported by an external pillar 26 and an independent pillar 28 that hangs from the blow-out barrel difference 27 on the second floor.

Similarly, for the steel staircase 3B of the lower half staircase 2B, the landing frame 12 to 1 as shown in FIG. 8 (A).
Install over the floor bundle base 23. In the case of the steel staircase 3B of the lower half staircase 2B of the second floor and above, the steel staircase 3B is attached from the blowout floor beam 8 on the lower floor to the landing frame 12 as shown in FIG. 8B.

In this way, the steel stairs 3A, 3B can be attached every time each floor is assembled during building, so that the workability of constructing these steel stairs 3A, 3B is good. The steel staircases 3A and 3B thus mounted can be used as a temporary staircase even in the subsequent work, for example, during woodworking, and workability and safety are improved. Also, when it becomes necessary to bring in large materials to the upper floor, these steel staircases 3A and 3B can be easily removed from the stairwell space by unfastening the bolts, so use this space. And large materials can be easily brought upstairs.

Next, at the time of wood construction, the above-mentioned steel stairs 3
The wooden stairs 14A and 14B corresponding to A and 3B are independently mounted above the steel stairs 3A and 3B and attached to the building frame.
These wooden stairs 14A and 14B are provided so as to cover the respective step plates 5 of the corresponding steel stairs 3A and 3B. Wooden stairs 1
4A and 14B are attached to the building frame independently of the steel stairs 3A and 3B, and because the edges are cut off from each other, it is difficult to ensure the accuracy of the steel stairs 3A and 3B. The finish of 14B is not affected.

Finally, by breaking the bolt joint,
Remove each steel staircase 3A, 3B from the building frame. In this case, the wooden stairs 14A and 14B can be easily removed by pulling them down. The removed steel stairs 3A and 3B can be reused as stairs in another building. In this case, if the steel stairs 3A, 3B have a structure in which the step plate 5 is bolted as in the example of FIG. 6, the step plate 5 can be disassembled with the stair frames 3A, 4A for recovery and transportation. The steel stairs 3A and 3B may be attached as they are without being removed. In this case, even if it is used as a temporary staircase and is soiled, it does not spoil the appearance of the staircase because it is covered with the wooden staircases 14A and 14B.

In the case of this embodiment, as shown in FIG. 7, the landing frame 12 is hung from the body difference 27,
Since the structure is independent of the staircase frame 4A, the span of the staircase frame 4A becomes short. Therefore, even if the staircase frame 4A has a small section modulus, the strength can be secured and the amount of steel frame used can be reduced. Further, also in the first floor portion, since the structure is such that the stair frame 4B of the lower staircase 2B is hung and supported, it is not necessary to provide a stair foundation, and the foundation construction is simplified.

[0023]

According to the staircase of the present invention, a wooden staircase is provided above the steel staircase, and the wooden staircase has side girders supported by the building frame independently of the steel staircase, and is made of steel. The steel stairs can be used as temporary stairs during construction because they have step plates that cover the stairs of each of the above steps, and workability and safety can be improved, and the manufacturing accuracy of the steel stairs is not affected. You can finish the woodwork of stairs. In the case of the configuration of claim 2,
Since the steel stairs can be removed downward, the steel stairs can be reused in another building. In addition, when a large-sized material is carried in to the upper floor, the carrying-in work can be easily performed by temporarily removing the steel stairs from the building frame.

Further, in the method of constructing stairs according to the present invention, a step of installing a steel stair in a building frame and a wooden stair supported by the building frame independently of the steel stair are installed above the steel stair. Since it is a method including the process of providing and the process of removing the steel stairs downward from the building frame, the installation work is easy, and as described above, the steel stairs before the wooden stairs can be used as temporary stairs, In addition, the steel stairs that are removed after installing the stairs can be reused for building stairs in another building.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an upper half of a staircase which is an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing a lower half portion of the staircase.

FIG. 3 is a plan view of the stairs.

4A is a side sectional view showing an upper end portion of the upper half staircase, FIG. 4B is a front sectional view showing an upper end portion of the upper half staircase, and FIG. 4C is a lower end portion of the upper half staircase. It is a side sectional view shown.

5A is a front sectional view showing an upper end portion of the lower half staircase, FIG. 5B is a side sectional view showing an upper end portion of the lower half staircase, and FIG. 5C is a lower end portion of the lower half staircase. A side sectional view showing a portion, (D) is a side sectional view showing a modified example of the lower end of the lower half staircase.

FIG. 6 is a perspective view showing a modified example of a steel staircase in the same staircase.

FIG. 7 is an explanatory diagram showing a steel stair attaching process in the upper half staircase of the staircase construction method of the present invention.

FIG. 8 (A) is an explanatory view showing a mounting process of the steel stairs in the lower half stairs of the construction method, and FIG. 8 (B) shows another mounting revision of the constituent stairs in the lower half stairs of the construction method. FIG.

[Explanation of symbols]

3A ... Stair stairs, 4A ... Stair frame, 5 ... Stairs, 6,
9, 10, 13 ... Bolts, 7, 11 ... Connection fittings, 12 ...
Landing frame, 14A ... Wooden stairs, 15A ... Side girder, 1
6 ... corrugated board, 17 ... riser board, 18 ... 2nd floor panel, 18A
… First floor floor panel, 19… Landing floor panel

Claims (3)

[Claims] 1. A wooden staircase is provided above a steel staircase, and the wooden staircase has a side girder supported by a building frame independently of the steel staircase, and each of the steps of the steel staircase. A staircase with a step board covering the board. 2. The staircase according to claim 1, wherein the upper and lower ends of the inclined staircase frame of the steel staircase are detachably joined downward to the building frame. 3. A process of installing steel stairs in a building frame,
A step of providing a wooden staircase having a side girder supported independently of the steel staircase by the building frame and covering the upper side of the steel staircase;
A step of removing the steel stairs from the building structure below the wooden stairs.