JP4278475B2 - Stairs with handrails, buildings with staircases with handrails, and methods for constructing staircases with handrails - Google Patents

Description

  The present invention relates to a staircase with a handrail, a building including this staircase with a handrail, and a construction method for a staircase with a handrail.

Conventionally, various stairs are known outside and inside a building. Among them, there are some that are sandwiched between walls to form a so-called staircase, but there are also staircases whose side faces are exposed. If such an exposed staircase is employed, the staircase can be brightened by light incident from the side of the staircase. In addition, since the wall occupies a small proportion, it can be an open space without a feeling of pressure, and the stepped shape on the side of the stairs is exposed, which can create a light impression of movement. it can.
Furthermore, in order to make the stairs even brighter, there is one in which the kick plate between the step plates is eliminated (see, for example, Patent Document 1). Such a staircase is called a strip staircase, and the steps between the staircases are pierced, so that the appearance design applied to the staircase and the surroundings of the staircase can be remarkably expressed, and has attracted particular attention in recent years. .
Here, the exposed staircase as described above has a fence-like handrail structure to prevent the fall (see, for example, the patent document). This handrail structure is formed in a fence shape from a bar-shaped handrail along the installation direction of the sagittal girder and a plurality of bar-shaped members (handrails) extending from the handrail toward the sagittal girder and the step board.

JP 2000-257232 A

  However, in such a conventional handrail structure, the handrails are fixed to the sagittal girders and the corrugated boards one by one by welding or using metal fittings. It is only partially supported by the standing part of the handrail. Therefore, when trying to improve the strength of the handrail, a large number of handrails or thick handrails will be formed. The appearance design of the stairs will be damaged. In addition, no matter how the bar-shaped balustrade is erected, there is a limit in strength and it is difficult to say that the appearance design is excellent.

  The object of the present invention is to expose the side of the staircase to brighten the staircase portion, and to improve the strength of the handrail without limiting the appearance design design, a building comprising this handrail staircase, And providing a method for constructing stairs with handrails.

  Referring to the drawings, the staircase 2 with a handrail of the present invention includes a step plate 21 having a tread surface 211, a horizontal girder 51 that supports an end portion in the left-right direction of the step plate 21, and is constructed diagonally. 51 is a staircase in which at least one end of the step board 21 does not come into contact with the wall 11 side of the building 1, and the handrail 52 and the sausage 52 are provided. A translucent surface material 54 provided between the girder 51 is provided, and the translucent surface material 54, the handrail 52, and the weir girder 51 are integrated. A connecting member 6 facing the finishing surface on which the finishing surface is installed is detachably provided, and a spacer S having a thickness substantially equal to the finishing material FL on which the finishing surface is formed is provided below the connecting member 6. Characterized by being able to be placed on the material 12 To.

Here, the stairs 2 with a handrail can be installed both indoors and outdoors. Further, one side of the staircase may be exposed without contacting the wall 11, or both sides may be exposed. When one side abuts against the wall 11, it is preferable that one end of each step plate 21 in the left-right direction is fixed to the wall 11. However, in the case of a floor-fixed staircase, each step plate 21 does not have to be fixed to the wall 11.
As the translucent face material 54, a transparent or translucent resin plate member, a metal mesh member, or the like can be used.
In addition, as the staircase 2 with a handrail of the present invention, a strip staircase in which the step plates 21 are formed in a through shape can also be adopted. Further, the shape of the spar 51 is not limited, and for example, a metal pipe or the like may be used as the spar 51.

According to the present invention, the handrail structure is constituted by a surface by integrating the handrail 52 and the spar 51 with the translucent face material 54, so that the conventional handrail, that is, the standing portion of the handrail The strength of the handrail 52 can be reliably improved in the two-dimensional direction (for example, the width and height in the front-rear direction) compared to the handrail partially supported by the paddle girder 51. Further, it is possible to prevent an object or the like from dropping from below the handrail 52.
Furthermore, since the light from the side of the stairs is introduced into the staircase 2 with the handrail through the translucent face material 54 by adopting the translucent face material 54, the staircase portion can be made bright and open space without direct illumination. In addition, since a handrail or a brace-like member, which has been limited in appearance and design in the past, is unnecessary, the handrail 52, the entire staircase 2 with a handrail observed through the translucent face material 54, and the It is possible to improve the degree of freedom in designing the external design applied to each structure around the stairs.
Moreover, by removing the connecting member 6, it is possible to generate a gap in which the finishing material FL can be inserted below the stairs even after the installation of the stairs 2 with the handrail. Thereby, even if it does not process finishing material FL along the shape of the spar girder lower end 511, it can spread all over and it is excellent also in a finish.
Further, since the spacer SP can be arranged instead of the finishing material FL before the finishing surface is applied, the staircase 2 with a handrail can be used for work upstairs. Thus, since the finishing surface can be constructed at the final stage of the construction of the building 1 with the handrail-equipped staircase 2 installed, it is not necessary to temporarily install the work staircase, and the work efficiency can also be improved in this respect.

In the present invention, it is preferable that a rod-like support member 53 for supporting the handrail 52 is attached to the sheathing girder 51, and the handrail 52, the support member 53, and the sheathing girder 51 are integrally formed into a frame.
According to the present invention, the frame body is configured including the support member 53, the frame body becomes a strong framework, and the translucent surface material 54 provided along the frame body further includes a reinforcing material. Therefore, the strength of the handrail 52 can be further improved.

In this invention, it is preferable to provide the kick board 22 fixed to the said step board 21, and this kick board 22 has translucency.
Here, as the kick plate 22, the space between the step plate 21 and the step plate 21 such as a transparent or translucent resin plate member, a metal mesh, or a skeleton member is transparent. Various aspects can be adopted.
According to the present invention, the step plate 21 is supported by the kick plate 22 and the step plate 21 and the step plate 21 are made continuous so that the step plate 21, the kick plate 22 and the spar 51 are substantially triangular. Since they are combined, they are structurally strong, and the inclination of the step plate 21 can be prevented. Moreover, since this kick board 22 permeate | transmits light, even if between each step board 21 is obstruct | occluded by the kick board 22, it does not become dark and can maintain brightness.

In the present invention, the sheathing girder 71 has two rod-like members 711 and 712 extending along the erection direction, and one of these rod-like members 711 and 712 is adjacent to the front end of the step plate 21. The other end of the step plate 21 is installed from the rear end of the step plate 21 to the rear end of the adjacent step plate 21, and the rod-like members 711 and 712 and the step plate 21. It is preferable that a truss structure is constituted by the kick plate 22.
Here, the truss structure is configured in a lattice beam shape in which the two rod-like members 711 and 712 are used as chords, and the end portions on the side of the staircase side of the step plate 21 and the kick plate 22 are diagonal members. Each contact of the truss structure is pin-joined by riveting or the like.
According to the present invention, by adopting the truss structure, the step plate 21 and the kick plate 22 are balanced with the external force in the axial direction and no bending moment or shear force is generated, so that the overall structure of the staircase 2 with the handrail is robust. Can be.

In the present invention, it is preferable that one end portion of the corrugated plate 21 in the left-right direction is fixed to the wall 11 of the building 1.
According to the present invention, even if the spacer SP is removed, the staircase 2 with the handrail is held at the fixed portion between the wall 11 and the step plate 21, so that no other means for holding the staircase 2 with the handrail is required, and the finished surface is finished. Can be easily performed.

In the present invention, the translucent face material 54 is preferably formed of either tempered glass or an acrylic plate.
According to this invention, since the tempered glass and the acrylic plate have high transparency of the material itself, the staircase 2 with a handrail can be brightened and an open space can be produced. It becomes easy to adjust the brightness and the color tone, such as making the translucent face material 54 translucent by surface processing.
Moreover, when tempered glass is employ | adopted, the intensity | strength of the handrail 52 can be improved further and it is excellent also in fire resistance.
And when an acrylic board is employ | adopted, since the translucent surface material 54 is weight-reduced, the load concerning the sagging girder 51, the corrugated board 21, etc. can be reduced.

The building 1 of the present invention is characterized by including the staircase 2 with a handrail as described above.
According to the present invention, the staircase 2 with a handrail is not surrounded by the wall 11 and the translucent face material 54 is adopted, so that it is easy to go up and down brightly. Moreover, it is not necessary to provide lighting directly on the staircase.
And in the space inside and outside the building 1, the exterior design of the building 1 can be fully exhibited in the vertical direction and the horizontal direction without being blocked by the handrail structure 5.
Therefore, these brightness and appearance design are also attractive features of the building 1, and the user can use the building 1 comfortably.

The construction method of the staircase 2 with a handrail according to the present invention includes a step plate 21 having a tread surface 211, a support girder 51 that supports the step plate 21, and is installed obliquely, and is substantially along the installation direction of the protection girder 51. A bar-shaped handrail 52 extending to the wall, and at least one end in the left-right direction of the stepped plate 21 is a construction method of the staircase 2 with a handrail in which it does not come into contact with the wall 11 side of the building 1, the translucent surface member 54 provided between the sasara digit 51, integrated with the translucent surface member 54 and the handrail 52 and the sasara digits 51, the lower end of the sasara digit 51, staircase 2 is installed A connecting member 6 facing the finished surface is attached, a spacer SP is disposed between the connecting member 6 and the base material 12, and the staircase 2 is temporarily installed. Thereafter, the connection member 6 and the spacer SP are Remove both sides and place on the base material 12 After laying the finish FL whose serial finished surface is formed, characterized in that to complete the handrail stair 2 is attached to the connecting member 6 to the lower end 511.

According to the present invention, since the handrail structure 5 includes the translucent face material 54, the strength can be reliably improved in the two-dimensional direction as described above, and from below the handrail 52. The fall of the thing of can also be prevented.
Furthermore, the translucency of the handrail structure 5 can provide the brightness and openness of the staircase 2 with a handrail as described above, and can improve the degree of freedom in designing the appearance design.
In addition, by removing the connecting member 6 as described above, it is possible to create a gap downward even after the installation of the staircase 2 with the handrail. Can be laid down.
In addition, since the staircase 2 with a handrail is temporarily installed and the finishing surface is constructed at the final stage of the construction of the building 1, the main staircase 2 with a handrail can be installed, which eliminates the need for a dedicated work staircase. Excellent.

[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a downstairs side of a staircase 2 with a handrail of a building 1 according to this embodiment, and FIG. 2 shows an enlarged lower portion of the staircase 2 with a handrail.
The staircase 2 with a handrail is installed so as to be obliquely bridged from a floor surface 12 below the floor to a floor beam (not shown) on the floor. Moreover, the staircase 2 with a handrail is installed so that one side surface is fixed to the indoor wall 11 of the building 1 and the other side surface side is exposed. Here, the floor 12 is left as a base material and is finished with a flooring material as will be described later. In FIG. 1, the stairs 2 with a handrail are installed in the floor surface 12 before finishing.
Here, in the stairs 2 with a handrail, the side facing the floor 12 will be described as the front, and the side facing the floor will be described as the rear. Moreover, the direction of the opposing side to the indoor wall 11 of the staircase 2 with a handrail 2 and the exposed side will be described as the left-right direction.

The staircase 2 with a handrail is a strip staircase provided with a step plate 21, a kick plate 22, a girder 5 with a handrail, and a connecting member 6. In the erection direction of the staircase 2 with a handrail, a plurality of step plates 21 are arranged at predetermined intervals. The step board 21 is formed in a rectangular flat plate shape using an accumulation material, and is disposed horizontally with the floor 12 so that both short sides are end portions in the left-right direction. The side end is fixed to the indoor wall 11. The surface of the stepped plate 21 is a tread surface 211 that is stepped on when raising and lowering the staircase 2 with a handrail, and the back surface is recessed toward the front surface side and has a single groove 212 corresponding to the thickness of the kick plate 22. Is formed along the front edge.
The kick plate 22 extends vertically between the rear end portion of each step plate 21 and the front end portion of the step plate 21 adjacent to the upper side of the step plate 21, and is continuous with the step plate 21. A stepped shape is formed. The kick plate 22 is made of transparent tempered glass, and is formed in a rectangular flat plate shape having long sides substantially equal to the step plate 21. Then, the upper end is inserted into the groove 212 on the back surface of the upper step plate 21, and the lower end is bolted with an overlap margin with the rear end surface of the lower step plate 21, whereby each kick plate 22 replaces each step plate 21. It is fixed to support. Note that only the lowermost step plate 21 is not provided with a kick plate 22 on the back surface, and this step plate 21 faces the floor surface 12.

Next, on the side exposed side of the stairs 2 with a handrail, a handrail girder 5 that prevents falling is formed in a substantially parallelogram shape that reaches the floor from the floor surface 12. The girder with handrail 5 is erected in a direction orthogonal to the longitudinal direction of the step plate 21 along the end surfaces of the step plate 21 and the kick plate 22.
The handrail-equipped girder 5 is integrally formed to include a balance girder 51, a handrail 52, a support member 53, and a glass plate 54 as a translucent surface material.
The spar girder 51 is formed of a bar-shaped member having a substantially U-shaped cross section made of a highly rigid metal or the like. From the rear end of the step plate 21 to the rear end of the adjacent step plate 21, the floor 12 It is installed diagonally up to the floor, and the rear end of the corrugated plate 21 is supported by riveting. That is, the spar girder 51 and the step plate 21 are pin-joined.
In addition, the side facing this floor girder portion 51 to the floor surface 12 is a lower end portion 511, and a screw hole 511A penetrating along the direction perpendicular to the surface of the glass plate 54 is formed in the lower end portion 511. (See FIG. 3B).

The handrail 52 is formed of a wooden bar-like member having a substantially U-shaped cross section, and is installed above the saddle girder 51 so as to be gripped when the stairs are raised and lowered substantially in parallel with the saddle girder 51.
In addition, a pair of support members 53 that extend substantially vertically toward the saddle beam 51 so as to support the handrail 52 are formed integrally with the handrail 52 at both ends of the handrail 52. Similarly to the handrail 52, the support member 53 is also a wooden bar-shaped member having a substantially U-shaped cross section.
Here, a single frame is formed by the handrail 52, the support member 53, and the counter girder 51, and a glass plate 54 corresponding to the shape and dimensions of the frame is fitted inside the frame. . The glass plate 54 is made of transparent tempered glass, and the outer peripheral portion is sandwiched between the recesses 51 of the spar girder 51, the handrail 52, and the support member 53 (the substantially U-shaped section of the rod-shaped member), and the illustration is omitted. However, it is bolted to the end portions of the plurality of step plates 21.
In addition, although this glass plate 54 is made into the transparent specification, frost glass and light control glass are also employable.

On the other hand, on the side opposite to the handrailed girder 5, a plurality of pedestals (not shown) are projected from the indoor wall 11 at predetermined intervals along the installation direction of the spar girder 51, and are supported by these pedestals. Thus, the edge part of the short side of each step board 21 is being fixed, respectively.
Each pier is fixed to a core member embedded in the indoor wall 11. Further, the end portion on the short side of the kick plate 22 fixed between the step plates 21 is in contact with the indoor wall 11.

And the connection member 6 is attached to the lower end part 511 of the balance beam part 51 as FIG. 2 shows. The connecting member 6 is made of a highly rigid material such as metal, and is included in the height dimension of the staircase 2 with the handrail together with the spar girder 51. The connection member 6 has a pair of clamping parts 61 which clamp the lower end part 511 along the inclination, and a flat base part 62. A screw hole is formed in each of the clamping portions 61, and a single screw 611 is screwed into the screw hole and a screw hole 511A (see FIG. 3B) of the counter girder portion 51, so that the lower end The connecting member 6 is detachably attached to the part 511.
These clamping parts 61 are erected on the upper surface of the pedestal part 62, and the lower surface of the pedestal part 62 faces the floor 12 (see FIG. 1). A flat spacer SP is sandwiched between the pedestal 62 and the floor 12. As will be described later, the spacer SP has a thickness dimension substantially equal to the flooring material FL (see FIG. 4C) attached as a finishing material for the floor 12. The spacer SP is formed of a highly rigid metal or the like, but it is also conceivable to substitute a plywood end material or the like used at the construction site of the building 1.
From the above, the staircase 2 with a handrail is installed on the floor 12 via the spacer SP by the connecting member 6 attached to the lower end 511.

(Temporary staircase with handrail)
Next, the construction method of the stairs 2 with a handrail will be described. For example, first, the staircase 2 with a handrail is temporarily installed as follows before finishing the floor surface 12.
(A-1) The rear end portion of each step plate 21 is fixed to the sheathing girder portion 51 with a rivet so that the step plate 21 becomes horizontal when the sheathing beam portion 51 is obliquely installed on the floor. Here, the connecting member 6 is attached to the lower end portion 511 of the sheath beam 51 with screws 611.
(A-2) The spar girder 51 is installed on the floor from the floor 12 together with the corrugated plate 21. At this time, the spacer SP is disposed between the connecting member 6 and the floor surface 12 (see FIG. 3A).
(A-3) Each step board 21 is horizontally fixed to the indoor wall 11 to which the cloth is stuck. Here, each corrugated board 21 is fixed using the above-mentioned pier (illustration omitted). In addition, you may stick the cloth of the indoor wall 11 after the attachment of the corrugated board 21. FIG.
(A-4) The upper and lower ends of the kick plate 22 are fixed to each step plate 21 as described above.
(A-5) After inserting the end portion of the glass plate 54 into the concave portion of the girder portion 51, followed by the concave portion of the handrail 52 and the concave portion of the support member 53 (all concave portions are substantially U-shaped in cross section) The glass plate 54 is bolted to the end portions of the plurality of step plates 21 to be integrated as a handrailed girder 5. The temporary work of the stairs 2 with a handrail is thus completed.

  As described above, when installing the staircase 2 with the handrail, the spacer SP is disposed, and the staircase 2 with the handrail seems to have worn the connecting member 6 at the lower end portion 511 that is the portion facing the floor surface 12. It looks like this. Here, the height dimension of the staircase 2 with a handrail corresponds to the floor height up to the floor in the state where the floor surface 12 is finished with the flooring material FL, but instead of the flooring material FL, spacers SP having substantially equal thickness dimensions are used. Since it is arranged, the structure of the staircase 2 with a handrail is not distorted even before the floor 12 is finished, and the staircase 2 with a handrail can be used as a work staircase (temporary staircase).

Next, with reference to FIG. 3 and FIG. 4 relating to the construction of the floor surface 12, a method of permanently installing the staircase 2 with a handrail temporarily installed as described above will be described.
Here, the staircase 2 with the handrail is installed at the lower end 511 of the spar girder 51 on the side not in contact with the indoor wall 11. When finishing the floor surface 12 in the conventional construction method, the lower end 511 is grounded. However, this problem can be solved by constructing as follows.
In the present embodiment, the flooring material 12 is pasted and finished on the floor surface 12, but tiles, corks, carpets, stones, and the like can also be employed as finishing materials.

(Book setting of stairs with handrail)
The staircase 2 with a handrail is installed as follows, for example.
(B-1) Due to the provisional provision of the staircase 2 with a handrail described above, the connecting member 6 is attached to the lower end portion 511, and the staircase 2 with the handrail is installed on the floor 12 via the spacer SP (FIG. 3). (See (A)).
(B-2) When constructing the floor surface 12, the connecting member 6 and the spacer SP are removed (see FIG. 3B). At this time, when the screw 611 is released, the connecting member 6 can be slid upward and in the front-rear direction, so that the connecting member 6 and the spacer SP can be removed. Here, below the lower end portion 511, a gap corresponding to the removal of the connecting member 6 and the spacer SP is vacant.
(B-3) The flooring material FL is inserted from the gap portion between the floor surface 12 generated below the connecting member 6 and attached to the floor surface 12 (see FIG. 4C). Here, since this gap has a margin with respect to the thickness dimension of the flooring material FL, the flooring material FL can be easily inserted.
(B-4) After finishing the floor 12, the connecting member 6 is arranged to slide to the lower end portion 511 and attached again (see FIG. 4D).
By the above, construction of the staircase 2 with a handrail accompanying the finishing work of the floor surface 12 is completed, whereby the staircase 2 with a handrail is completed.

According to such 1st embodiment, there exist the following effects.
(1-1) One side of the staircase 2 with a handrail is exposed without coming into contact with the indoor wall 11, and a glass plate 54 is formed on a frame formed by the counter girder 51, the handrail 52, and the support member 53. Mated and integrated. Thereby, first, the strength of the handrail 52 is surely improved in the two-dimensional direction (the extending direction of the support member 53 and the installation direction of the spar girder 51) by configuring the handrailed girder 5 to include a surface. Thus, it is possible to prevent small items from dropping from below the handrail 52.
Further, the frame body is configured including the support member 53, and the frame body becomes a strong framework, and further, the glass plate 54 fitted to the frame body becomes a reinforcing material. The strength of the handrail 52 can be improved.

Further, since light enters from the side of the staircase 2 with a handrail through the glass plate 54, the step board 21 and the like can be brightened without providing direct lighting dedicated to the staircase 2 with a handrail. In addition, since it is made through through the glass plate 54, an open space where the presence of the handrailed girder 5 is not felt can be provided.
As described above, sufficient strength is ensured without using a large number of conventional handrails, brace members, etc., so the staircase 2 with handrails observed through the handrail 52 and the glass plate 54 is used. It is possible to improve the degree of freedom of design of appearance designs such as the whole, the interior wall 11 and the floor surface 12.

(1-2) A kick plate 22 that includes a transparent kick plate 22 between the step plates 21 and supports the step plate 21 by extending the vertical direction by supporting the step plate 21 on the kick plate 22; A step plate 21 sandwiched between the kick plate 22 in the front-rear direction, and a counter girder portion 51 that comes into contact with the end surfaces of the step plate 21 and the kick plate 22 from the side surface direction of the staircase 2 with a handrail. Since the crossing angle is formed by combining the substantially triangular shapes, the structure becomes strong and the tread surface 211 can be kept horizontal without the step board 21 being inclined.
Moreover, since this kick board 22 is transparent, even if the space between the step boards 21 is blocked by the kick board 22, light enters and the brightness of the staircase 2 with the handrail can be maintained.

(1-3) The connecting member 6 is detachably attached to the lower end 511 of the spar girder 51, and before finishing the floor surface 12, a spacer SP is disposed between the floor surface 12 and the connecting member 6, thereby It is possible to remove the connecting member 6 and the spacer SP after the attachment staircase 2 is installed, and to apply the flooring material FL to the floor surface 12 using the gap portion formed below the lower end portion 511.
Therefore, the flooring material FL can be easily laid on the floor surface 12 without any work such as cutting along the shape of the lower end portion 511 or pattern matching, and the finish of the cut is not left. Also excellent.
Further, even if the connecting member 6 and the spacer SP are removed, the step 2 with the handrail is held at the end of the step plate 21 fixed to the indoor wall 11, so that no other holding means is required. Furthermore, since not only the spacer SP but also a gap corresponding to the dimension of the connecting member 6 can be generated, the flooring material FL can be easily inserted into the gap portion, and the finishing work of the floor surface 12 is facilitated.
And since the connection member 6 is included in the height dimension of the staircase 2 with the handrail together with the spar girder 51 and the spacer SP is arranged instead of the flooring material FL, even before finishing the floor 12 with the flooring material FL. The stairs 2 with handrail do not wobble and can be moved up and down to work up and down.
As described above, if the staircase 2 with a handrail is installed at the initial stage of construction of the building 1 and the flooring material FL is applied at the final stage of construction, the flooring material FL is prevented from being soiled, and the flooring material FL is not troublesome. Can be finished beautifully. Moreover, since it is not necessary to install a work staircase on the premise of removal after work, work efficiency can also be improved in this respect.

(1-4) By adopting the glass plate 54 made of tempered glass, the strength of the handrailed girder 5 can be further improved and the fire resistance is also excellent.
Moreover, from the high transparency of the material itself of the glass plate 54, the stairs 2 with a handrail and its vicinity can be made brighter and more open.

(1-5) Since the building 1 has the staircase 2 with a handrail as described above, the staircase portion is not surrounded by the indoor wall 11 and becomes open, and it does not become dark without lighting. Easy to move up and down.
Furthermore, since the interior wall 11, the floor surface 12, and the like are not blocked by the handrail girder 5, these appearance designs can be sufficiently expressed through the glass plate 54.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.
In the following description, the same reference numerals are given to the same configurations as those in the embodiment described above, and the description is omitted or simplified.
In 1st embodiment, the staircase 2 with a handrail was equipped with the girder 5 with a handrail on one side. Moreover, the balance beam part 51 by one rod-shaped member was provided.
On the other hand, in 2nd embodiment, while the stairs with a handrail are provided with the girder with a handrail on both sides, the point provided with two rod-shaped members as a balance girder is different. This will be specifically described below.

FIG. 5 shows the downstairs side of the stairs 3 with a handrail of the building 1 according to the present embodiment.
The staircase 3 with a handrail is bridged obliquely from a floor surface 12 below the floor to a floor beam (not shown) on the floor in substantially the same manner as the staircase 2 with handrail of the first embodiment. Here, the stairs 3 with a handrail are exposed without abutting against the wall on both side surfaces, and are provided with girders 5 with a handrail on both side surfaces. That is, each step plate 21 is not fixed to the wall, and both ends in the left-right direction of the step plate 21 are supported by the girder 5 with a handrail.
The saddle girder 71 included in the girder with handrail 5 is a rod-shaped bar arranged substantially in parallel with the first baffle 711 in addition to the first baffle 711 substantially the same as the baffle 51 of the first embodiment. A second sheathing girder 712 is provided and is constituted by these two rod-shaped members.

Similar to the first counter girder 711, the second counter girder 712 is formed of a metal bar member having high rigidity. The second counter girder 712 is installed above the first counter girder 711 from the front end of the step plate 21 to the front end of the adjacent step plate 21, and the rear end of the step plate 21 is riveted. I support it. Note that both ends of the second sheathing girder 712 are fixed to the support member 53.
Here, a truss structure is formed in which the first and second spar girders 711 and 712 are made of chord material, and the end portions of the step plate 21 and the kick plate 22 are made of diagonal materials, and these contact points are pin-joined by riveting. Has been.
In addition, since the construction method of the staircase 3 with a handrail is the same as that of 1st embodiment, description is abbreviate | omitted here, but the lower end part 711A of the 1st rocking girder 711 lower end is substantially the same as the lower end part 511 of 1st embodiment. The connecting member 6 is detachably attached to the lower end portion 711A (see A-1 to A-5 and B-1 to B-4).

According to such a second embodiment, in addition to the effects described in (1-1) to (1-5) of the first embodiment, there are the following effects.
(2-1) Since the truss structure as described above is formed at a position corresponding to the stepped girder as the staircase structure, the step board 21 and the kick board 22 are balanced with the external force in the axial direction, and the bending moment / Since no shearing force is generated, deformation of the step plate 21, the kick plate 22, the counter girder 71, the handrail 52, the support member 53, the glass plate 54, etc. can be prevented, and the overall structure of the staircase 3 with the handrail can be made robust. it can. Moreover, since such a truss structure is a through shape, the stairs 2 with a handrail can be kept bright.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
FIG. 6 is a side view of the stairs 4 with a handrail according to a modification of the present invention. Here, while the counter girder portions 51 and 71 of each of the above embodiments are formed of rod-shaped members, the counter girder portion 81 has the end face shapes of the step plate 21 and the kick plate 22 when viewed from the side. It forms in the continuous step shape which coat | covers, and can support each step board and each kick board firmly along each linear part of this step shape.
The handrail-equipped girder 5 includes a bar-shaped member 92 disposed along the surface of the glass plate 54 in substantially parallel to the handrail 52, and is reinforced by the bar-shaped member 92.
Furthermore, the staircase 4 with a handrail includes a support column 101 that supports the step plate 21 on the upper floor, and the connecting member 6 is detachably attached to the lower end of the support column 101 in the same manner as the lower end of the spar section 81. It has been. Here, by handling the connecting member 6 attached to the support column 101 in substantially the same manner as the connecting member 6 attached to the lower end portion 511 of the first embodiment (the A-1 to A-5 and B-1 to B4 described above). Reference), the floor surface 12 can be finished easily and beautifully without the support column 101 hindering the finishing work of the floor surface 12.

Further, the shape and position of the handrailed girder 5 are not limited to the above embodiments. If the spar girder portions 51, 71, 81 and the handrail 52 are integrated via the glass plate 54, the glass plate 54 is framed by the spar girder portions 51, 71, 81, the handrail 52, and the support member 53. It does not have to be surrounded by
In addition, although the glass plate 54 made from tempered glass was employed as the translucent surface material constituting the girder 5 with a handrail in each of the above embodiments, for example, an acrylic plate, a mesh material, and an aluminum frame having a through hole Etc. can also be adopted.
Further, the shape and the like of the step plate 21 and the kick plate 22 are not limited to the above embodiment, and the kick plate 22 may not be provided.
Furthermore, the installation work of the steps 2, 3, and 4 with the handrail may be performed before or after the floor surface 12 is finished.

  The present invention can be used as a staircase in which at least one side surface is exposed, and the handrail structure of the present invention can also be applied to handrails such as landings and balconies.

The perspective view of the staircase with a handrail in 1st embodiment of this invention. The elements on larger scale which show the lower part of the stairs with a handrail of FIG. The figure explaining the construction method of the stairs with a handrail in the said embodiment. The figure explaining the construction method of the stairs with a handrail in the said embodiment. The perspective view of the staircase with a handrail in 2nd embodiment of this invention. The side view of the stairs with a handrail in the modification of this invention.

Explanation of symbols

1 Building 2, 3, 4 Stairs with handrail 5 Girder with handrail
6 Connecting member 11 Indoor wall 12 Floor surface (surface of base material)
21 Corrugated plate 22 Kicking plates 51, 71, 81
52 Handrail (part of the frame)
53 Support member (part of the frame)
54 Glass plate (translucent surface material)
211 Tread surface 511, 711A Lower end portion (lower end of sasara girders)
711 First sagittal girder (one of two bar-shaped members)
712 Second sagittal girder (one of two bar-shaped members)
FL flooring material (finishing material)
SP spacer

Claims (8)

A step plate having a tread surface, a lateral girder supporting the left and right ends of the step plate, and a slanting girder constructed obliquely, and a bar-shaped handrail extending substantially along the construction direction of the reed girder, A staircase in which at least one end of the board does not contact the wall side of the building,
A translucent surface material provided between the handrail and the spar girder,
The translucent face material, the handrail, and the sagittal girder are integrated,
A connecting member facing the finish surface on which the staircase is installed is detachably provided at the lower end of the sagittal girder, and a thickness approximately equal to the finishing material on which the finish surface is formed is provided below the connection member. A staircase with a handrail, characterized in that spacers of dimensions can be placed on the base material. In the stairs with a handrail according to claim 1,
A staircase with a handrail, characterized in that a bar-like support member for supporting the handrail is attached to the counter girder, and the hand rail, the support member, and the counter girder are integrally formed as a frame. In the stairs with a handrail according to claim 1 or claim 2,
A staircase with a handrail, comprising a kick plate fixed to the step plate, the kick plate having translucency. In the stairs with a handrail according to claim 3,
The scabbard has two rod-shaped members extending along the installation direction,
One of these rod-shaped members is constructed from the front end of the step plate to the front end of the adjacent step plate, and the other is constructed from the rear end of the step plate to the rear end of the adjacent step plate. A stairs with a handrail, wherein the bar-shaped member, the step plate, and the kick plate constitute a truss structure. In the staircase with a handrail according to any one of claims 1 to 4 ,
A staircase with a handrail, wherein one end portion in the left-right direction of the step board is fixed to a wall of a building. In the stairs with a handrail in any one of Claims 1-5 ,
The translucent face material is formed of any one of tempered glass and an acrylic plate. A building comprising the stairs with a handrail according to any one of claims 1 to 6 . A step board having a tread surface, a saddle girder that supports the step board and is installed obliquely, and a bar-shaped handrail extending substantially along the installation direction of the saddle girder, and at least in the left-right direction of the step board It is a construction method of a staircase with a handrail in which one end does not contact the wall side of the building,
A translucent surface material is provided between the handrail and the sagittal girder, the translucent surface material, the handrail and the sagittal girder are integrated,
At the lower end of the sagittal girder, a connecting member facing the finish surface on which the staircase is installed is attached, and a staircase is temporarily installed by placing a spacer between the connecting member and the base material,
Then, remove both the connecting member and the spacer,
A method for constructing a staircase with a handrail, comprising: laying a finishing material on which a finished surface is formed on a base material; and attaching the connecting member to the lower end to complete the staircase.

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