JP2018178573A - Staircase structure and method of manufacturing steel staircase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steel staircase that can facilitate assembling work.SOLUTION: In a single stage unit 48, a rising plate 52 is attached to a step board 50, and a pair of leg plates 56 is attached to a support plate 54, and the support plate 54 is attached to the step board 50. In the single stage unit 48, a stairway module 36 is arranged so that the support plate 54 is bridged between a pair of force girders 46, and the leg plate 56 is fixed to the force girder 46. In the stairway module 36, one or more single stage units 48 are fixed to form part or all of the stairs. At this time, since the single stage unit 48 is made lightweight, it is easy to manufacture the steel staircase.SELECTED DRAWING: Figure 4

Description

    The present invention relates to a staircase structure of a building and a method of manufacturing a steel staircase.

  In the steel stairs of Patent Document 1, a step board member is supported by a supporting and reinforcing hardware and a step board unit is used, and in the step board unit, the supporting and reinforcing metal work is spanned between a pair of cage bars and fixed. It is done. Moreover, the steel stairs of patent document 1 are installing the decorative board on the surface of a step board member by using the step board member of the step board unit fixed to the bracing girder as a foundation.

  By the way, the tread plate member is made into a substantially L-shaped cross section by bending of the surface-treated steel plate to form a tread surface portion and a riser portion, and a lip grooved steel is used as the base reinforcing metal. Further, each of the step board member and the base reinforcing metal is fixed in a bridge-like manner between the pair of sliding rails, with a length adapted to the step width.

  When constructing the stairs, it is necessary for a worker to carry the deck unit by hand and install it between the bracing girder. However, the work of manually carrying the step board unit in which the step board member and the base reinforcing metal are integrated becomes a heavy labor for the worker. In addition, it is conceivable to use heavy equipment etc. in order to eliminate the work of carrying the step plate unit by hand by workers, but the work using heavy equipment etc. becomes a large-scale work, especially when constructing the indoor stairs. It will Furthermore, after attaching a step-plate unit to a slide girder, it is necessary to perform the work of attaching a decorative board, and the operation man-hour until finishing a steel stairway increases.

JP, 2014-177762, A

  The present invention has been made in view of the above-mentioned facts, and an object of the present invention is to provide a staircase structure capable of facilitating the assembling work of stairs and a method of manufacturing a steel staircase.

  A step structure according to a first aspect of the present invention for achieving the above object comprises: a decorative member including a step board forming a step tread surface; and a pair of force girders disposed at intervals shorter than a longitudinal length of the step board. The length in the longitudinal direction is shorter than the length of the step board, and is attached to the surface of the step board opposite to the step surface, and is spanned between the pair of force girders, thereby the decorative member And a steel support member for supporting the force girder on the power girder.

  In the first aspect, the support member is attached to the decorative member including the step board. Also, the support member is attached to the power girder. Thus, the cosmetic member is supported by the power girder via the support member. The number of the power girder may be one, but is more preferably two from the viewpoint of support stability of the decorative member and weight reduction of the decorative member.

  Here, the distance between the pair of force girders is shorter than the step width, and the support member can be lighter than when the longitudinal length is the step width, and the step board of the decorative member is used. It can be made lighter because it only needs to be supported. Therefore, the support member can be made light, and even if the support member and the cosmetic member are integrated, it can be easily carried, and the work of attaching the support member having the cosmetic member attached thereto to the power girder can be facilitated.

  The staircase structure of the second aspect is, in the first aspect, provided on side wall surfaces of the stairs positioned on both sides of the pair of force girders, and the longitudinal end of the tread board is placed on the side walls of the tread board. It has the positioning member by which height direction position is positioned.

  In the second aspect, the positioning member is attached to the side wall surface of the stairs to which the power girder is attached. The positioning member is attached to the side wall surface such that the height (height of the top surface) of the step board when the step board is placed is the height (vertical position) according to the dimension of the stairs. Thus, by placing the step board of the decorative member on the positioning member of the side wall surface, the vertical position of the supporting member together with the decorative member can be easily positioned, and the assembling work of the stairs can be facilitated.

  According to a third aspect, in the second aspect, the plurality of positioning members on which the plurality of treads adjacent in the raising and lowering direction are mounted are integrally connected.

  In the third aspect, positioning members for positioning each of the treads adjacent in the raising and lowering direction are integrally connected. For this reason, compared with the case of positioning and positioning a plurality of positioning members on the side wall surface one by one, the mounting operation is facilitated, and the assembling operation of the stairs provided with a plurality of treads can be further facilitated.

  In the method of manufacturing a steel staircase according to the fourth aspect of the present invention, a longitudinal length of the step board is the length of the step board in a force beam assembling step of assembling a pair of force bars in a building and a decorative member including a step board forming a step tread surface. A single-step member assembly which is shorter than the longitudinal length and is mounted on the opposite side of the tread surface of the step board to a steel support member which is bridged between the pair of force girders to form a single-step member And a single-step attachment step of attaching the support members to a pair of the force beams and supporting the single-step members on the force beams.

  In the fourth aspect, in the power girder assembling step, the force girder is assembled to the building. Further, in the end step member assembling step, a steel supporting member which is shorter than the length of the step board and which can be bridged between a pair of force girders on the decorative member including the step board is opposite to the step tread surface of the tread plate. It is attached to the surface of the (back side) to form a single-stage member.

  Further, in the single-stage attachment process, the support members of the single-stage member are attached to the pair of force girders, and the cosmetic members of the single-stage member are supported by the force girders. By repeating this single-step mounting process, it is possible to easily manufacture the stairs provided with a predetermined number of treads.

  Furthermore, in the fourth aspect, when the building is a unitary building, the decorative member may be attached to the unit together with the power girder at a manufacturing plant for manufacturing the unit of the building. As a result, since the units may be arranged and fixed at the construction site of the building, the assembling work of the stairs after arranging the units can be omitted, and the construction work of the building can be facilitated.

  In the method for manufacturing a steel stairway according to the fifth aspect, in the fourth aspect, the longitudinal direction end of the tread plate is provided on the side wall surface of the steps located on both sides of the pair of force beams prior to the single-stage attachment step. There is provided a positioning member attaching step of attaching a positioning member, on which the height direction position of the tread plate is positioned, to the side wall surface by mounting the portion.

  In the fifth aspect, in the positioning member attaching step, the positioning member is attached to the side wall surface of the step located on the super side of the pair of force girders. Thereby, when attaching a single-stage member to a power girder, positioning of the up-down direction position of a step board can be made easy.

  In the method of manufacturing a steel stairway according to the sixth aspect, in the fifth aspect, the plurality of positioning members on which the plurality of treads adjacent in the elevating direction are mounted are integrally connected.

  In the sixth aspect, the plurality of positioning members used for positioning each of the plurality of step boards adjacent in the elevation direction are integrally formed in advance. Thereby, prior to the single-stage attachment process, the operation of attaching the plurality of positioning members to the side wall surface can be facilitated, and the operation of attaching the plurality of single-stage members can be further facilitated.

  A seventh aspect is according to any one of the fourth aspect to the sixth aspect, wherein the uppermost single-stage member is assembled under a floor above a floor to which a ceiling board of a floor is attached. Adjacent to

  In a building, for example, when providing stairs between the second floor and the third floor, it is necessary for the ceiling of the second floor to meet the requirements of the quasi-refractory structure. From here, in the seventh aspect, a steel ceiling base frame is assembled under the floor above the floor. The uppermost single-stage member is adjacent to the ceiling base frame.

  Such a steel undercarriage frame may be assembled at a position adjacent to the uppermost single-stage member. If a steel ceiling base frame is assembled in advance, it may be heavy and difficult to lift. In such a case, the ceiling may be assembled at a position adjacent to the uppermost single-tiered member, thereby easily forming a floor base of the floor under the floor above the floor and satisfying the definition of the quasi-refractory structure Can be formed.

  As described above, according to the first aspect, by using a supporting member whose length is shorter than the tread plate included in the decorative member, even if the supporting member is attached to the decorative member, the weight can be increased. Since it can be restrained, there is an effect that the assembling work of the stairs can be facilitated.

  Further, according to the second aspect, the vertical positioning of the decorative member can be facilitated, and the assembling work of the stairs can be facilitated. Further, according to the third aspect, the vertical positioning of each of the plurality of decorative members can be facilitated, and the assembling work of the stairs can be further facilitated.

  According to the fourth aspect, there is an effect that the mounting operation of the step board to the power girder can be facilitated and the assembling operation of the stairs can be facilitated.

  Further, according to the fifth aspect, the single-stage member can be easily positioned in the vertical direction, and the assembling work of the stairs can be facilitated. Further, according to the sixth aspect, the vertical positioning of each of the plurality of single-stage members can be facilitated, and the assembling work of the stairs can be further facilitated.

It is a perspective view which shows schematic structure of the unit for buildings which concerns on this Embodiment. It is a perspective view showing the principal part of the unit for buildings concerning a 1st embodiment. It is a top view which shows the stairs concerning a 1st embodiment. (A) is a perspective view showing a single-tiered unit, and (B) is an elevation view of the single-tiered unit viewed from the side of the power girder. (A) is an elevation view of the side wall surface which shows a positioning member, (B) is an elevation view of a stairway module. (A) is an elevation view of the side wall surface which shows another example of a fixing member, (B) is an elevation view of the stairway module using the fixing member of (A). It is an elevation view which shows the principal part of the stairs concerning a 2nd embodiment. It is a top view showing the stairs concerning a 2nd embodiment. It is a perspective view showing the groundwork frame concerning a 2nd embodiment. Each of (A) and (B) is sectional drawing of the principal part seen from the side opposite to the step side which shows attachment of a foundation | substrate flame | frame. (A)-(C) are schematic sectional drawings of the principal part which shows the outline of attachment of a base frame and a ceiling board.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Composition of a building]

  The building 10 according to the present embodiment is a unit-type house (unit-type building) that meets the requirements of the quasi-refractory structure. In FIG. 1, a building unit 12 used for the building 10 is shown in a perspective view.

  As shown in FIG. 1, the building unit 12 is formed in a rectangular frame shape, and the building unit 12 is provided with four frame columns 14 each having a rectangular shape. Each of the frame support columns 14 is arranged parallel to each other, with the longitudinal direction being up and down. A ceiling frame 16 is formed on the top of the four frame columns 14, and a floor frame 18 is formed on the bottom of the four frame columns 14.

  The ceiling frame 16 is provided with a pair of girder ceiling girder 20A and a pair of wife ceiling girder 20B, and the ceiling frame 16 has an upper end of the frame support 14 at each end of the girder girder 20A and the wife ceiling girder 20B. It is rigidly joined to the joint portion 14A of the above, and is formed in a rectangular frame shape. Moreover, between girder ceiling girder 20A of ceiling frame 16, a plurality of ceiling girder 20C each made parallel to wife ceiling girder 20B is arranged, and each end of ceiling girder 20C is girder ceiling It is joined to the girder 20A. Thus, the ceiling frame 16 is formed in a substantially ladder shape.

  The floor frame 18 is provided with a pair of girder floor girder 22A and a pair of end floor girder 22B, and in the floor frame 18, each end of the girder floor girder 22A and the gutter floor girder 22B is the lower portion of the frame support 14 It is rigidly joined to the joint portion 14B of the above, and is formed in a rectangular frame shape. In addition, a plurality of floor beams 22C, each of which is parallel to the end floor beam 22B, is disposed between the beam floor beams 22A of the floor frame 18, and each end of the floor beam 22C is a beam floor. It is joined to the girder 22A. Thereby, the floor frame 18 is formed in a substantially ladder shape.

  In the building 10, a plurality of building units 12 are arranged horizontally (vertically and horizontally) and vertically arranged, and by connecting the building units 12 adjacent vertically and horizontally and vertically, a steel frame rigid frame structure Is formed. In the building 10, a first floor portion is constituted by building units 12 arranged horizontally on the ground, and a second floor portion is constituted by a plurality of building units 12 stacked on the first floor portion 12 There is. In the building 10, a third floor portion is configured by a plurality of building units 12 stacked on the second floor portion of the building unit 12. Thereby, the building 10 is formed in two floors (including a part of two floors) or three floors (including a part of three floors) by stacking a plurality of building units 12 .

  In the building unit 12, the ceiling board 24 is attached to the ceiling base provided as the ceiling base 20C of the ceiling frame 16 as a ceiling base or suspended from the ceiling base 20C to form a ceiling. Further, in the building unit 12, the floor plate 26 is attached on the floor foundation with the floor joists 22C of the floor frame 18 as the floor foundation or the joists (not shown) disposed on the floor joists 22C as the floor foundation to form a floor. Be done. The floor may be formed by laying a heat insulating material between joists disposed on the floor frame 18, and stacking a plurality of plate members (floor plate 26) on the heat insulating material.

  In the building unit 12, a framework is formed in a manufacturing plant, and a partition (partition wall) and the like are formed based on the indoor layout of the building 10. At this time, an outer wall material (an outer wall panel, not shown) is attached to the building unit 12 facing the outside. In addition, in the building 10, a living room or the like, which becomes a living space wider than one building unit 12, is obtained by removing and communicating the partition walls between the plurality of building units 12 arranged in the horizontal direction in advance. It is formed. Furthermore, by dividing the interior of the building unit 12 by the partition walls, small rooms such as a corridor and a storage are formed. Also, the building unit 12 manufactured in the manufacturing plant is transported to the building site of the building 10 and assembled to form the building 10.

On the other hand, in the two- and three-story building 10, stairs connecting the lower and upper floors are installed. The stairs are provided in the building unit 12 below the floor.
Here, in the first embodiment, an example of the stairs connecting the first floor portion and the second floor portion will be described, and in the second embodiment, an example of the stairs connecting the second floor portion and the third floor portion will be described. explain.

First Embodiment
FIG. 2 is a perspective view of the main part of the building unit 12A provided with the stairs 30 according to the first embodiment. Further, in FIG. 3, the stairs 30 according to the first embodiment are shown in a plan view.

  As shown in FIG. 2, in the building unit 12A according to the first embodiment, a step room 28 is formed on the side of one end of the large beam (the wife's ceiling beam 20B and the floor beam 22B). In the unit 12A, the ceiling girder 20C of the staircase 28 is removed in advance, and the staircase 28 is a so-called blow through. In addition, in the building unit 12 (not shown) of the second floor portion to be stacked on the building unit 12A, the floor girder 22C of the blow-through portion is removed in advance. Thereby, the staircase room 28 communicated from the first floor to the second floor is formed.

  As shown in FIG. 2 and FIG. 3, the stairs 30 are in the form of broken stairs, and the stairs 30 are installed in the staircase room 28. As shown in FIG. 3, in the staircase room 28, three sides except the rising and falling sides of the stairs 30 are surrounded by the partition walls 28A, 28B, and 28C, and a partition is formed between the rising and falling sides A wall 28D is provided. In FIG. 2, partition walls and the like are omitted. Further, in the following description, the surfaces of the partition walls 28A, 28D or partition walls 28C, 28D on both sides in the width direction of the stairs 30 will be referred to as a side wall surface 32.

  As shown in FIG. 2, in the stairs 30, flat modules 34 </ b> A and 34 </ b> B are disposed in the middle in the vertical direction. In the stairs 30, the stairs module 36A is disposed between the flat module 34A and the floor plate of the first floor, and the stairs between the flat module 34B and the floor side of the second floor (the ceiling side of the first floor) Module 36B is arranged. That is, the staircase 30 is constituted by four modules of a staircase module 36A, flat modules 34A and 34B, and a staircase module 36B.

  As shown in FIG. 2, in the building unit 12A, a middle pillar 38 is disposed at an intermediate position between the two frame pillars 14 on the wife side, and the middle pillar 38 has its upper end connected to the gable ceiling girder 20B. The lower end is connected to the end floor cross beam 22B. A bracket 40 is attached to the middle column 38 at the middle in the vertical direction. The bracket 40 is attached to each of the flat module 34A side surface of the inner column 38 and the flat module 34B side surface, and the bracket 40 is mounted at a position where the flat module 34B side is higher than the flat module 34A side. There is.

  The flat modules 34A, 34B are provided with a frame 42 assembled in a rectangular frame shape using light grooved steel or the like, and each of the frames 42 is fastened and fixed to the bracket 40. Thereby, the flat module 34A is lowered by the flat module 34B and supported by the center post 38, and the step between the flat module 34A and the flat module 34B is dimensioned so as to raise the stairs 30. .

  On each frame 42 of the flat modules 34A and 34B, a plurality of foundations are attached in a rectangular frame, and a steel plate (not shown) is laid on the foundation, and a tread plate 44 (see FIG. 3) is on the steel plate. The steel plate and the tread 44 are fixed to the base by screws or screw nails. Thereby, in the stairs 30, each of the flat modules 34A and 34B is covered by the step board 44, and a two-step landing is formed by the step of the rising dimension. Further, a kick board (not shown) is attached to the flat module 34B on the surface on the flat module 34A side.

  On the other hand, as shown in FIG. 2 and FIG. 3, the step module 36A is provided with a steel power girder 46A, and the step module 36B is provided with a steel power girder 46B. Each of the force girders 46A, 46B is provided in a pair between the side wall surfaces 32.

  The upper side of the power girder 46A is connected to the frame 42 of the flat module 34A, the lower side is attached to the floor of the building unit 12A, and the flat module 34A side is inclined upward. The lower side of the power girder 46B is connected to the frame 42 of the flat module 34B, and the upper side is fastened and fixed to the ceiling girder 20C of the building unit 12A, and the flat module 34B side is inclined downward. ing. Further, as shown in FIG. 3, in plan view, the pair of force beams 46A are connected so as to be linearly continuous from both edges of the frame 42 of the flat module 34A, and the pair of force beams 46B are The flat modules 34B are connected in a straight line from both edges of the frame 42 of the flat module 34B.

  The step module 36A and the step module 36B have a single-stage unit 48 as a single-stage member attached to each of the force beams 46A and 46B.

  Here, the single-stage unit 48 according to the first embodiment will be described with reference to FIGS. 4 (A) and 4 (B). FIG. 4 (A) shows the single-stage unit 48 in an exploded perspective view, and FIG. 4 (B) is an elevation view of the single-stage unit 48 seen from the back side of the stairs (steps 30). Shown. In the description of the single-stage unit 48, the stair module 36A and the stair module 36B are collectively referred to as the stair module 36, and the force girder 46A and the force girder 46B are collectively referred to as the force girder 46.

  The single-stage unit 48 is provided with a wooden tread plate 50 and a riser 52 as decorative members. The treads 50 and the risers 52 are rectangular in plan view, and the length thereof is the same as the distance between the side wall surfaces 32 (the width dimension of the stairs 30) in the stairs 30. Further, the width of the step board 50 is slightly longer than that of the steps 30 (the size of the step surface), and the width of the risers 52 is slightly longer than that of the steps 30 (rise dimension). .

  The riser 52 is attached to one end side in the width direction of the step board 50 on the lower surface side of the step board 50 and is suspended downward from the step board 50. The riser 52 is attached to the tread 50 by, for example, forming a narrow groove along the longitudinal direction on one end side in the width direction of the tread 50, and inserting and bonding the riser 52 in the narrow groove. There is. In the step board 50, a part or the whole of the surface may be resin-coated, and an anti-slip or the like may be provided on an end of the upper side of the step board 50 on the side of the riser 52.

  The single-stage unit 48 is provided with an elongated substantially flat support plate 54 made of steel (made of steel plate) as a support member and a pair of leg plates 56. The length of the support plate 54 is shorter than the length of the step board 50, and the width (width dimension) is shorter than the width of the step board 50 and a width that can be used for lifting by a person without the step board 50 ing. Further, as shown in FIG. 4B, the support plate 54 has a length in the longitudinal direction which can be bridged between the pair of force beams 46.

  The leg plates 56 are disposed in pairs at both longitudinal end portions of the support plate 54 and fixed to the lower side surface of the support plate 54, and the pair of leg plates 56 project downward in parallel from the support plate 54. . The distance between the inner side surfaces (the surfaces facing each other) of the pair of leg plates 56 is substantially the same as the distance between the outer surfaces (the surfaces opposite to each other) of the pair of force beams 46. The distance between the outer surfaces of the pair of leg plates 56 may be the distance between the inner surfaces of the pair of force beams 46.

  In the single-stage unit 48, the longitudinal direction of the support plate 54 is the longitudinal direction of the tread plate 50, and a screw or the like is used to fasten and fix the support plate 54 to the lower surface of the tread plate 50. Also, the single-stage unit 48 is disposed such that the support plate 54 is stretched between the pair of force beams 46. Further, in the single-stage unit 48, for example, bolts and nuts are used, and each of the pair of leg plates 56 is fastened and fixed to the power girder 46.

  The stair module 36 is configured by fixing one or more single stage units 48 to the power girder 46. As shown in FIGS. 2 and 3, in the step 30, five single-stage units 48 are attached to the power girder 46A to form a stair module 36A, and six single-stage units 48 are attached to the force girder 46B. A staircase module 36B is configured. Also, the top step of the stair module 36A is mounted at a position lowered by the kicking-up dimension than the flat module 34A, and the top step of the step module 36B is by the kicking-up dimension rather than the floor surface of the upper floor (the second floor) It is mounted in the lowered position.

  On the other hand, in FIG. 5A, the side wall surface 32 to which the step module 36 (36A, 36B) is attached is shown in elevation. Moreover, in FIG. 5 (B), the stairway module 36 (36A, 36B) to which the single-stage unit 48 was attached is shown by the elevation view of a side view.

  As shown in FIGS. 5A and 5B, a fixing member 60 as a positioning member is provided on the side wall surface 32 to which the step module 36 (36A, 36B) is attached. The fixing member 60 is formed of a plurality of transverse members 62 and a plurality of longitudinal members 64 each made into a long rectangular solid, and the transverse members 62 are made the same number as the single-stage unit 48 attached to the power girder 46. , The number of longitudinal members 64 is one less than that of the lateral members 62. Further, in the first embodiment, the length of the horizontal member 62 is slightly shorter than the tread surface (the dimensions of the tread surface and the width dimension of the tread plate 50) of the stairs 30 and the length of the vertical member 64 is the stairs 30. (Eg, a length similar to the length of the cross member 62 plus the thickness of the cross member 62).

  As shown in FIG. 5A, the fixing member 60 is joined to one end of the upper surface of the horizontal member 62 in the longitudinal direction with one end surface of the vertical member 64 in the longitudinal direction being abutted. One longitudinal side of the next transverse member 62 is abutted and joined to the other longitudinal end. Thus, the fixing member 60 is integrated in a step-like shape in which a plurality of the fixing members 60 are sequentially connected such that the horizontal members 62 and the vertical members 64 are substantially perpendicular to each other.

  The fixing members 60 are attached to the side wall surfaces 32 on both sides of the stair module 36. At this time, in the fixing member 60, the longitudinal direction of each of the cross members 62 is horizontal, and the upper surface of the cross member 62 is in contact with the lower surface of the tread plate 50 when the stairs are formed by a plurality of single-stage units 48. It is in the contact position. The fixing member 60 is positioned such that the vertical member 64 is on the back side of the riser 52 when the stairs are formed by the plurality of single-stage units 48. As a result, as shown in FIG. 5B, in each single-stage unit 48, the longitudinal end of the tread plate 50 is placed on the cross member 62 of the fixing member 60 so that each of the plurality of single-stage units 48 is Positioning in the vertical direction in the elevating direction can be performed.

Next, as an operation of the first embodiment, assembling of the stairs 30 to the building unit 12A will be described.
The building unit 12A is manufactured together with the other building units 12. At this time, the staircase room 28 is formed in the building unit 12A, and the bracket 40 is protruded from the partition wall 28B of the staircase room 28.

  The attachment of the step 30 to the building unit 12A is performed by attaching the frame 42 of the flat module 34A, 34B to the bracket 40 and attaching the power girder 46A of the step module 36A to the frame 42 of the flat module 34A and the frame of the flat module 34B. Attach the power girder 46B of the stair module 36B to 42.

  In addition, a fixing member 60 in which the cross member 62 and the longitudinal member 64 are assembled and integrated in advance is positioned and attached to the outside of each of the force girders 46A and 46B. This allows for the attachment of a single stage unit 48 to each of the stair modules 36A, 36B.

  The single-stage unit 48 manufactures each of the step board 50, the kick board 52, the support board 54, and the leg board 56, and while attaching the kick board 52 to the step board 50, the leg board 56 is attached to the support board 54 by a pair.

  After that, a plurality of single-stage units 48 are attached to each of the power girders 46A and 46B in order. The mounting of the single-stage unit 48 places the both end portions of the tread plate 50 in the longitudinal direction (the width direction of the stairs) on the cross member 62 of the fixing member 60. Thereby, positioning of the single-stage unit 48 in the vertical direction (height direction of the stairs) is performed. In this state, by adjusting the horizontal position (for example, the exit surface from the partition wall 28A on the back side of the step chamber 28) of the step board 50, each single step unit 48 is positioned and positioned. The leg plate 56 of is fixed to the power girder 46A, 46B. As a result, the lower end portion of the upper riser 52 is stacked on the back side of the stairs of the lower tread 50, and the stairs 30 in which each of the tread 50 and the riser 52 is fixed to the power girders 46A and 46B are manufactured. The steps 30 can be easily manufactured.

  At this time, the single-stage unit 48 is preferably attached in order from the upper side portion to the lower side portion of the power girder 46A, 46B. Thereby, the single-stage unit 48 can be attached in order, making the lower end part of the upper end side riser 52 into the stairs back of the step board 50 on the lower side. That is, when the single-stage unit 48 is disposed from the lower side, the lower end of the riser 52 of the single-stage unit 48 on the upper side may hit the upper surface of the tread 50 on the lower side. Although the work of shifting the position of the single-stage unit 48) is required twice, it is possible to eliminate the need for the work of double operations.

  The building unit 12A manufactured in this manner is carried along with the other building units 12, and arranged and connected horizontally and horizontally to form a housing of the building 10. Further, since the stairs 30 are installed in advance in the building unit 12A, the work of assembling the stairs 30 can be made unnecessary at the 10 work places.

  In the first embodiment, the fixing member 60 in which the plurality of horizontal members 62 and the vertical members 64 are integrally connected is used as the positioning member, but the positioning member is not limited to this. 6A and 6B show a positioning block 66 as another example of the positioning member. 6 (A) and 6 (B) are shown in the same elevation as each of FIGS. 5 (A) and 5 (B).

  The positioning block 66 as a fixing member is formed in a rectangular parallelepiped shape shorter than the cross member 62, and the positioning block 66 is attached to the side wall surface 32 for each single-stage unit 48. The position of each positioning block 66 is a position corresponding to the cross member 62 in the fixing member 60.

  As shown in FIG. 6B, when the positioning block 66 is used, the step board 50 of the single-stage unit 48 is placed between the positioning blocks 66 attached to each of the side wall surfaces 32 on both sides of the step module 36. Temporarily arrange the single-stage unit 48. Thereby, the single-stage unit 48 is positioned in the vertical direction of the step board 50.

  Thereafter, the step boards 50 of the single-stage units 48 are positioned in the front-rear direction of the stairs 30 to fasten and fix each of the single-stage units 48 to the power girder 46. Thereby, the single-stage unit 48 can be easily attached to the power girder 46, and the assembling operation of the stair module 36 is facilitated.

Second Embodiment
Next, a second embodiment will be described. In the second embodiment, the same functional parts as in the first embodiment are given the same reference numerals as in the first embodiment, and the description thereof is omitted.

  In FIG. 7, the stairs 70 according to the second embodiment are shown in an elevation view seen from one side in the width direction, and in FIG. 8, the stairs 70 are shown in a plan view .

  The stairs 70 according to the second embodiment are provided in the building unit 12B on the second floor, and connect the second floor and the third floor. In the building unit 12B, a part of the ceiling girder 20C of the ceiling frame 16 is removed in advance to form a rectangular blowout, and a step room 68 is formed in the blowout. In the building unit 12 (not shown) on the third floor superimposed on the building unit 12B, the floor beam 22C (see FIG. 1) hanging on a part of the staircase room 68 is removed in advance, and 2 A part of the staircase room 68 of the floor portion is in communication with the third floor portion.

  As shown in FIGS. 7 and 8, the stairs 70 are in the form of a round staircase and are installed in the staircase room 68. The stairs 70 are configured by the stairs module 36 (36C) and the stairs modules 72A and 72B, and are arranged in the order of the stairs modules 36C, 72A and 72B from the lower side of the stairs 70.

  A frame 42 is provided to the stair modules 72A, 72B. The frame 42 of the staircase module 72A is lower than the frame 42 of the staircase module 72B, and the vertical position of the frame 42 of the staircase module 72B corresponds to the frame 42 of the staircase module 72A and the ceiling of the building unit 12B. It is in the middle position.

  As shown in FIG. 8, in the building unit 12B, an intermediate column 38 is provided between the frame 42 of the stair module 72A and the frame 42 of the stair module 72B, and the bracket 40 of the central column 38 incorporates the stair module 72A. , 72B are fastened and fixed. In addition, in the building unit 12B, a middle column 38A is provided on the opposite side of the stair module 72A of the stair module 72B, and the middle column 38A includes the girder girder 20A and gir floor girder 22A of the building unit 12B ( All are connected to (not shown). A bracket 40 is attached to the middle post 38A, and a frame 42 of the stair module 72B is fastened and fixed to the bracket 40. Thus, the stair module 72A is supported by the center post 38 and attached to the building unit 12B, and the step module 72B is supported by the center posts 38 and 38A and attached to the building unit 12B. In the second embodiment, the difference in height between the frame 42 of the stair module 72A and the frame 42 of the stair module 72B is set to a three-step equivalent rise height.

  As shown in FIG. 7, the step module 36C is provided with a force gage 46C. The power girder 46C is provided in a pair between the side wall surfaces 32, and the upper end side is connected to the frame 42 of the stair module 72A via the bracket 40, and the lower side is the second floor floor (building unit 12B Is fastened and fixed to the floor plate 26). Further, the pair of force beams 46C are provided so as to be continuous in a straight line from both edges of the frame 42 of the stair module 72A in plan view.

  Seven single-stage units 48 are attached to the power girder 46C of the stair module 36C. A fixing member 60 in which a cross member 62 corresponding to each tread plate 50 of seven single-stage units 48 is integrated on the side wall surface 32 on which the stair module 36C is provided, or seven single-stage units 48 A positioning block 66 corresponding to each step board 50 is attached (not shown).

  The step module 36C is attached to the power girder 46c with the step board 50 of each single-stage unit 48 positioned by the fixing member 60 (cross member 62) or the positioning block 66. Thus, seven steps are formed in the stair module 36C, and the step board 50 of the uppermost single-stage unit 48 is formed at a position lower than the stair module 72A by the kicking dimension.

  On the other hand, each of the stair modules 72A, 72B is provided with a step board 74A and two single-stage units 76A, 76B. The tread plate 74A is formed in a substantially triangular shape, and the single-stage unit 76B is provided with a tread plate 74C having a substantially triangular shape. Further, the single-step unit 76A is provided with a step board 74B, and the step board 74B is formed between the step board 74A and the step board 74C to be formed in a rectangular shape which becomes rectangular in plan view. .

  The single-stage units 76A and 76B are provided with steel support plates 78A and 78B whose planar shapes are substantially similar to the step plates 74B and 74C and whose area is smaller than that of the step plates 74B and 74C. Plates 78A, 78B are attached to the treads 74B, 74C. Furthermore, each of the leg plates 80A, 80B is attached to each of the support plates 78A, 78B, and by fixing the leg plates 80A, 80B to the frame 42, the step plates 74B, 74C are frames together with the support plates 78A, 78B. It is supported by 42. Further, the leg plate 80A of the single-stage unit 76A is shorter than the leg plate 80B of the single-stage unit 76B by a kicking dimension.

  In the stair modules 72A and 72B, a tread plate 74A and single stage units 76A and 76B are disposed in order from the lower floor side to the upper floor side. Thus, the stairs module 72A, 72B is formed with stairs for every three stairs, and the top board 74C of the top of the stairs module 72B kicks up more than the floor surface of the upper floor (the third floor) It is located at a lower position by the dimension. Although illustration is omitted, each of the treads 74A to 74C is provided with a riser.

  Thereby, the stairway 70 is made into the steel stairway which satisfy | fills the prescription | regulation of a quasi-refractory structure by stairway module 36C, 72A, 72B. Further, also in the stairs 70, as in the case of the stairs 30, since the single-stage unit 48 is used, the assembling work of the stairs module 36C can be facilitated.

  On the other hand, as shown in FIG. 7 and FIG. 8, the stairs 70 are turned in the direction of about 180 degrees between the step board 74A of the step module 72A and the step board 74C of the step module 72B. Therefore, in the building unit 12 on the upper side (upper floor (third floor) side of the stairs 70) of the building unit 12B, a floor (hereinafter referred to as a walkway floor 82) at a position adjacent to the staircase module 36C in plan view. Is formed. In the building unit 12 overlapping the building unit 12B, a floor base is formed of steel material in advance at the manufacturing plant in accordance with the passage floor 82, and the floor plate 26 is attached to the floor base to form the passage floor 82. It is done.

  Here, the ceiling on the second floor below the aisle floor 82 needs to satisfy the requirements of the quasi-refractory structure, and in the building unit 12B, the area under the aisle floor 82 is included in the blow through The ceiling girder 20C is removed, and it is necessary to form a ceiling base satisfying the definition of the quasi-refractory structure in the on-site work of the building 10 in the building unit 12B. The ceiling base according to the second embodiment is shown in a perspective view in FIG.

  In the building unit 12B provided with the stairs 70, a ceiling base frame 84 as a ceiling base frame is used, and the ceiling base frame 84 is attached to the lower side of the aisle floor 82. For the ceiling base frame 84, a pair of frame members 86A and 86B and a plurality of base members 86C using light grooved steel or the like are used.

  In the ceiling base frame 84, a rectangular frame 88 is formed by the pair of frame members 86A and the pair of frame members 86B. In the frame body 88, a plurality of base materials 86C are arranged at predetermined intervals substantially parallel to the frame material 86B between the frame materials 86B, and respective end portions of the base materials 86C are connected to the frame material 86A. . Thus, the ceiling base frame 84 is formed in a substantially ladder shape. The frame members 86A and 86B and the base member 86C are assembled by being fastened and fixed using bolts, nuts, tapping screws or the like.

  Here, the attachment of the ceiling base frame 84 and the ceiling plate 24 to the blow-by portion of the building unit 12B will be described with reference to FIGS. 10 and 11. FIG. 10 (A) shows a schematic cross section along the line AA of FIG. 8, and FIG. 10 (B) shows a schematic cross section of a configuration different from FIG. 10 (A). ing. Further, FIGS. 11A to 11C show the attachment procedure of the ceiling base frame 84 in the form of a cross-sectional view of the main part of FIG. 10A.

  As shown in FIGS. 8 and 10A, a partition wall 90 is formed on the side of the staircase module 36C of the aisle floor 82, and a partition wall 92 is formed on the side opposite to the staircase module 36C of the aisle floor 82. Is provided. In FIG. 10A, the partition walls 90 and 92 of the building unit 12B are the partition walls 90A and 92A, and the partition walls 90 and 92 of the upper building unit 12 of the building unit 12B are the partition walls 90B and 92B. And

  In the partition walls 90 (90A, 90B), 92 (92A, 92B), a plurality of backing materials 94A are disposed between the partition plates (inner wall materials) 94, and a not-shown heat insulator such as rock wool is disposed. It has a semi-refractory structure. Further, between the partition wall 92A and the partition wall 92B, the girder girder girder 20A of the building unit 12B and the girder girder girder 22A of the third floor building unit 12 are stacked. In the third floor building unit 12, the aisle floor frame 96 is attached in advance as a floor base of the aisle floor 82 in the manufacturing plant, and the foundation material 96A of the aisle floor frame 96 includes the partition wall 90A and the partition wall 90B. It is placed between. Thus, the passage floor 82 is formed by attaching the floor plate 26 to the base material 96A of the passage floor frame 96 with screws or the like.

  The ceiling base frame 84 is attached between the girder ceiling girder 20A and the partition wall 90A. At this time, the base material 98A is attached to the girder large cross beam 20A, and the base plywood 98B is attached in the partition wall 90A, and the frame 88 of the ceiling base frame 84 is attached to the base material 98A with a tapping screw or the like. While being fastened and fixed, it is fastened and fixed to the base plywood 98B by a bind drill screw or the like. In the ceiling base frame 84, the base material 86C is fastened and fixed to the frame 88 using a bind drill screw or the like.

  In the ceiling base frame 84, the base plate 100 using steel plate or the like is fastened and fixed to the base material 86C, and a field using MDF (medium density fiber board) or the like around the base plate 100 is used. The rim 102 is attached. Further, a ceiling plate 24 using reinforced gypsum board or the like is fastened and fixed to the field edge 102 and the base plate 100 by a flat tapping screw or the like.

  Here, the weight of the ceiling base frame 84 formed of steel is about ten kg in a state where the base material 86C is attached to the frame 88 (frame members 86A and 86B) and assembled. There is. For this reason, the work of attaching the ceiling base frame 84 in the assembled state becomes heavy labor.

  From this point, in the second embodiment, the ceiling base frame 84 is dismounted (in a state before assembly), and is assembled and attached between the girder girder 20A and the partition wall 90A.

  As shown in FIG. 11A, in assembling the ceiling base frame 84, first, the frame body 88 is assembled between the girder girder 20A and the partition wall 90A. At this time, after attaching the frame member 86A to each of the girder ceiling girder 20A and the partition wall 90A, the frame member 86B may be attached to the frame member 86A, and the frame members 86A and 86B are connected and fixed in advance. The frame 88 may be lifted and attached in advance.

  Next, the base material 86C is inserted between the frame members 86A on one side, and the base material 86C is fastened and fixed to the frame 88 one by one. At this time, by using light grooved steel as the frame members 86A and 86B and forming the frame 88 with the opening sides (opposite side of the web) facing each other, the base member 86C can be easily formed between the frames 88. Can be inserted into and fixed. As a result, as shown in FIG. 11B, the ceiling base frame 84 can be attached between the girder girder 20A and the partition wall 90A. Thereafter, as shown in FIG. 11C, the base plate 100 and the edge 102 are attached, and the ceiling plate 24 is attached.

  As described above, since the frame members 86A and 86B and the base material 86C constituting the ceiling base frame 84 can be separately lifted and attached, attachment of the ceiling base frame 84 to the ceiling side becomes a heavy labor for the worker You can control the

  On the other hand, in FIG. 10A, the case where the passage floor 82 hangs on a floor girder such as the girder floor girder 22A is taken as an example. In this case, by mounting the ceiling girder of the building unit 12B on the lower side of the floor girder, the ceiling foundation frame 84 may be attached between the ceiling girder (girder girder 20A, wife's ceiling girder 20B) and the partition wall 90A. it can.

  Here, as shown in FIG. 10 (B), when the aisle floor 82 does not hang on the floor girder, the ceiling foundation frame 84 may be attached using the ceiling girder 20C of the building unit 12B. That is, the ceiling base frame 84 may be attached between the ceiling beam 20C and the partition wall 90A by using the ceiling beam 20C facing the partition wall 90A.

  In the first and second embodiments described above, the stairs 30 or the stairs 70 are attached in advance to the building units 12A and 12B manufactured in a manufacturing plant. However, in existing buildings, it may be applied to the renovation of stairs. In this case, the power girder 46 is attached to the stairway of the existing building. At this time, it is preferable to attach the fixing member 60 to the side wall surface. Thereafter, by attaching and fixing the plurality of single-stage units 48 to the power girder 46, it is possible to manufacture the stairs of the quasi-refractory structure.

  Moreover, you may apply not only to the repair of the stairs but in the new construction of the stairs. In this case, since the single-stage unit 48 is reduced in weight, it can be easily carried by the operator, and the workability can be improved.

  Further, in the first and second embodiments, the building 10 in which the steel frame rigid frame structure is formed using the plurality of building units 12 has been described as an example. However, the present invention can be applied to a quasi-refractory structure such as a building in which a steel frame frame structure is formed.

10 Building 12, 12A, 12B Building Units 30, 70 Stairs (Steel Stairs)
32 side wall surface 36 (36A, 36B, 36C) stair module 46 (46A, 46B, 46C) power girder 48 single-stage unit (single-stage member)
50 step board (makeup member)
52 Kick board (makeup member)
54 Support plate (support member)
56 Leg plate (supporting member)
60 Fixing member (positioning member)
66 Positioning block (Positioning member)
82 aisle floor 84 ceiling basement frame (ceiling basement frame)
88 frame

Claims (7)

A decorative member including a tread plate forming a tread surface of the stairs;
A pair of force beams disposed at intervals shorter than the longitudinal length of the tread plate;
The length in the longitudinal direction is shorter than the length of the step board, and is attached to the surface of the step board opposite to the step surface, and is spanned between the pair of force girders, thereby the decorative member A supporting member made of steel for supporting the force girder
Stair structure with.   The positioning member is provided on the side wall surface of a step located on both sides of the pair of force girders, and the longitudinal end of the step board is placed thereon to have a positioning member for positioning the height direction position of the step board. Stair structure described in.   The staircase structure according to claim 2, wherein a plurality of the positioning members on which a plurality of the step boards adjacent in the elevating direction are placed are integrally connected. A power girder assembling process for assembling a pair of force girders into a building;
A decorative member including a step board forming a step tread surface, and a steel support member whose length in the longitudinal direction is shorter than the length in the longitudinal direction of the step board and which can be bridged between the pair of force girders A single-step member assembling step of forming a single-step member by attaching the step board to the side opposite to the step surface;
Attaching the supporting members to the pair of power girders to support the single-stage members on the power girder;
A method of manufacturing a steel staircase having:   Prior to the single-step mounting step, the longitudinal end of the tread plate is placed on the side wall surface of the stairs positioned on both sides of the pair of force beams, thereby positioning the height direction position of the tread plate The method for manufacturing a steel staircase according to claim 4, further comprising a positioning member attaching step of attaching a member to the side wall surface.   The method for manufacturing a steel staircase according to claim 5, wherein the plurality of positioning members on which the plurality of step boards adjacent in the elevating direction are mounted are integrally connected.   The steel according to any one of claims 4 to 6, wherein the single-stage member of the uppermost stage is adjacent to a steel ceiling base frame assembled under a floor above a floor and to which a ceiling board below the floor is attached. How to make stairs made.