JP2012241465A - Staircase structure of unit building, building unit and unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a staircase structure of a unit building in which a landing of staircase with sufficient structural strength can be simply formed at an intermediate part in the longitudinal direction of a building unit on an upper floor.SOLUTION: A first frame bar 5 is installed projecting from the inside surface of a floor girder 3A on the long side of a building unit on the second floor in the axial direction of a floor girder 3B on the short side, and a second frame bar 6 is installed projecting from the side face on the side of an open ceiling space 2 of a floor beam 4 located to face the open ceiling space 2 in the axial direction of the floor girder 3A on the long side. The tip of the first frame bar 5 and the tip of the second frame bar 6 are connected so that a floor frame of a landing 7 is formed, and side faces of the floor beam 4 in which the second frame bar 6 is installed and adjacent floor beam 4 are connected with a reinforcement beam 8 as a reinforcement member.

Description

  The present invention relates to a staircase structure of a unit building, a building unit used for the staircase structure, and a unit building including the building unit.

  Conventionally, in a unit building, a staircase is provided in an open space formed in a building unit constituting the unit building (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 05-179713 JP 2008-291425 A

  Conventionally, in many cases, as in the staircase structure of a unit building as described in Patent Document 1 described above, a landing uses the floor of an upper-floor building unit adjacent to the upper-floor building unit provided with stairs. It is configured.

  However, in such a configuration, direct transportation from the stairs to the room space in the upper floor building unit where the stairs are provided is not possible.

  On the other hand, in the staircase structure of a unit building as described in Patent Document 2, a landing is provided in the upper floor building unit so as to protrude at the height of the floor of the upper floor building unit.

  However, in order to ensure structural strength, this landing is usually constructed by projecting the frame material from the floor beams that form the floor of this upper floor building unit, so the location provided is the building unit on this upper floor. It will be limited to the inner corner.

  Therefore, it is still impossible to go directly from the stairs to the living room space in the building unit on the upper floor where the stairs are provided.

  Here, even if one frame material is projected from the floor beam and this landing is formed in the middle part in the longitudinal direction of the building unit on the upper floor, the floor beam on which the frame material is provided is the material. It rotates about the axial direction, and sufficient structural strength cannot be ensured.

  In addition, even if you try to support the landing protrusion by supporting it with pillars, in the unit building, due to restrictions on transportation of the building unit on the upper floor, it is necessary to perform complicated post-construction work on the site to construct the pillar As a result, the precious feature of the unit building having the advantage of shortening the construction period is ruined.

  Therefore, the present invention is a unit building staircase structure that can easily form a stair landing with sufficient structural strength in the middle part of the upper floor building unit in the longitudinal direction, a building unit used in this staircase structure, And it aims at providing the unit building provided with this building unit.

  In order to achieve the above object, the staircase structure of a unit building according to the present invention is provided with a staircase in an open space formed inside a lower floor building unit and an upper floor building unit placed on the upper floor. The above-mentioned building unit on the upper floor has a pair of long side floor beams and a pair of short side floor beams arranged in a substantially rectangular shape. A plurality of floor beams are laid in the axial direction of the floor beams on the short side between the floor beams to form a floor frame, and the floor beams are omitted in the portion where the blowout space is formed, The floor beam in a position where a first frame material is provided to project in an axial direction of the floor beam on the short side from an inner surface of the floor beam on the long side of the building unit on the upper floor, and faces the blowout space The second frame material extends in the axial direction of the long side floor girder from the side surface of the blowout space side of The floor beam provided with the second frame material is formed by connecting the tip of the first frame material and the tip of the second frame material to form a floor frame of a landing The side surfaces of the floor beam adjacent to each other are connected by a reinforcing member.

  Here, the reinforcing member may be a reinforcing beam that connects the floor beams on an extension line of the second frame material.

  The waist wall panel may be supported by a column raised from the floor beam at a position facing the blowout space, and a waist wall for preventing the fall may be provided.

  Further, the support column is provided on the side surface of the floor beam on the side of the blowout space at a position facing the blowout space through an attachment member in which nuts are respectively fixed in accordance with the positions of the bolt holes. It should be fixed with bolts.

  The building unit of the present invention is a building unit used as the building unit on the upper floor in the staircase structure of the unit building of the present invention.

  The unit building of the present invention includes the building unit of the present invention.

  Such a staircase structure of a unit building according to the present invention includes a unit building in which a staircase is provided in an open space formed inside a lower-floor building unit and an upper-floor building unit placed thereon. It is a staircase structure.

  In the building unit on the upper floor, a pair of long side floor beams and a pair of short side floor beams are assembled in a substantially rectangular shape, and a plurality of floor beams are short between the long side floor beams. A floor frame is formed by erection in the axial direction of the side floor girder, and the floor beam is omitted in the portion where the blow-out space is formed.

  Further, the first frame material is provided so as to protrude in the axial direction of the floor large beam on the short side from the inner surface of the floor large beam on the long side of the building unit on the upper floor, and the blowout of the floor beam at the position facing the blown space The second frame material is provided so as to protrude in the axial direction of the long side floor girder from the side surface on the space side, and the leading edge of the first frame material and the leading edge of the second frame material are joined to form a floor frame of the landing Is formed.

  In addition, the side surfaces of the floor beam on which the second frame material is provided and the adjacent floor beam are connected by a reinforcing member.

  Because of this structure, the floor beam on which the second frame material is provided is reinforced by the reinforcing member so that it does not rotate about the direction of the material axis, so the stair landing with sufficient structural strength can be connected to the building unit on the upper floor. It can be easily formed in the middle part in the longitudinal direction.

  Here, in the case where the reinforcing member is a reinforcing beam that connects the floor beam on the extension line of the second frame member, the floor beam can be reinforced with a small number of members.

  In addition, when the waist wall panel is supported by the pillars raised from the floor beam at the position facing the blowout space and the waist wall for fall prevention is provided, the floor beam at the position facing the blowout space Is reinforced by the reinforcing member, it is possible to provide the waist wall for preventing the fall with high strength and in a stable state.

  Furthermore, the column is bolted to the side of the floor beam on the side of the blowout space at the position facing the blowout space via an attachment member in which nuts are respectively fixed in accordance with the positions of the bolt holes. When fixed, the column can be provided in a state where it is easily raised from the floor beam at the position facing the blown-out space.

  Such a building unit of the present invention is configured as a building unit used as an upper floor building unit in the staircase structure of the unit building of the present invention.

  With such a configuration, if the first frame material, the second frame material, and the reinforcing member are provided in advance in a building unit on the upper floor at a factory or the like, the workability of the unit building can be further improved.

  Such a unit building of the present invention is configured to include the building unit of the present invention.

  With such a configuration, it is possible to construct a unit building that enjoys the above-described effects of the staircase structure of the unit building of the present invention.

It is explanatory drawing which shows schematic structure of the unit building of Example 1. FIG. FIG. 2 is an enlarged cross-sectional view taken along line AA in FIG. 1 and is an explanatory diagram illustrating a schematic configuration of a staircase structure of a unit building according to the first embodiment. It is the elements on larger scale which show the junction part of the floor large beam and floor floor beam of a long side. It is the elements on larger scale which show the junction part of the floor large beam of a long side, and a 1st frame material. It is the elements on larger scale which show the junction part of a floor beam and a 2nd frame material. It is the elements on larger scale which show the junction part of the 1st frame material and the 2nd frame material. It is the elements on larger scale which show the joining state between the floor beams of a reinforcement beam. It is explanatory drawing which shows schematic structure of the staircase structure of the unit building of Example 2. FIG. It is the elements on larger scale which show the junction part of a floor beam and a support | pillar. FIG. 10 is a cross-sectional view taken along line B-B in FIG. 9. It is CC sectional view taken on the line of FIG.

  Hereinafter, the form for implementing this invention is demonstrated based on Example 1, 2 shown to drawing.

  First, the configuration of the first embodiment will be described.

  FIG. 1 shows a schematic configuration of a unit building U1 according to the first embodiment.

  In this unit building U1, a building main body 1A is constructed by assembling a building unit 1b on the first floor as a building unit on the lower floor and a building unit 1a on the second floor as a building unit on the upper floor on the foundation 1B. Has been.

  Here, the building unit 1b on the first floor and the building unit 1a on the second floor are building units having a short side length of approximately 2500 mm and a long side length of approximately 5400 mm.

  Moreover, as shown in FIG. 2, the ventilation space 2 is formed in the interior of the building unit 1b on the first floor and the building unit 1a on the second floor constituting the building body 1A.

  Here, in order to form this blow-off space 2, in the building unit 1b on the first floor, although not shown, a pair of long-side grooved steel ceiling beams and a pair of short-sided grooved steel ceiling beams Of rectangular steel ceiling beams that are rigidly joined together by welding and assembled into a substantially rectangular shape, and are installed in a plurality of rigidly joined via welding pieces between the long side ceiling beams. The ceiling beam at the position corresponding to the blowout space 2 is omitted.

  Further, in the building unit 1a on the second floor, as shown in FIG. 2, the pair of grooved steel floor beams 3A, 3A on the long side and the pair of grooved steel floor beams 3B, 3B on the short side are welded. The floor beams 4 are formed in a substantially rectangular shape by being rigidly joined to each other and are rigidly joined by welding between the long side floor beams 3A and 3A via the attachment pieces 31 to form a floor frame. Among them, the floor beam 4 at a position corresponding to the blowout space 2 is omitted (see also FIG. 3).

  Then, the first frame member 5 made of square steel is welded from the inner side of the floor side beam 3A on the long side of the building unit 1a on the second floor so as to protrude in the axial direction of the floor side beam 3B on the short side through the attachment piece 31. (See also FIG. 4), and the second frame member 6 made of square steel is provided on the long side of the floor beam 3A from the side surface of the floor beam 4 at the position facing the blown space 2 on the side of the blown space 2 side. The tip of the first frame member 5 and the tip of the second frame member 6 are rigidly joined by welding (see also FIG. 5). 6), the floor frame of the landing 7 is formed.

  Furthermore, in the staircase structure of the unit building of Example 1, the space between the side surfaces of the floor beam 4 adjacent to the floor beam 4 provided with the second frame material 6 is on the extension line of the second frame material 6, Both ends of a square steel reinforcing beam 8 as a reinforcing member are connected by being rigidly joined by welding (see also FIG. 7).

  In addition, a floor material 9 indicated by a two-dot chain line is affixed to the upper surfaces of the first frame material 5 and the second frame material 6 and the upper surfaces of the floor beams 4,. The floor 10 is formed.

  And, as shown by the broken line, a folding staircase K as a stairway having an intermediate landing is provided between the landing 7 and the floor 11 on the first floor, and it can travel between the first floor and the second floor. It is said that.

  The folding staircase K may be attached in advance to the building unit 1b on the first floor at a factory or the like.

  In this way, the main construction work of the staircase structure at the site is only the work of connecting the landing 7 and the upper end of the folded staircase K.

  Next, the effect of Example 1 is demonstrated.

  Such a staircase structure of a unit building of Example 1 is composed of a first-floor building unit 1b as a lower-floor building unit and a second-floor building unit 1a as an upper-floor building unit placed thereon. This is a staircase structure of a unit building U1 in which a folding staircase K as a staircase is provided in an atrium space 2 formed inside.

  The building unit 1a on the second floor has a pair of long side floor beams 3A, 3A and a pair of short side floor beams 3B, 3B assembled in a substantially rectangular shape, and the long side floor beams 3A, 3A, A plurality of floor beams 4,... Are installed between 3A in the axial direction of the floor large beam 3B on the short side to form a floor frame, and the floor beams 4 are omitted in the portion where the blowout space 2 is formed. ing.

  Furthermore, the first frame material 5 is provided so as to protrude in the axial direction of the floor large beam 3B on the short side from the inner side surface of the floor large beam 3A on the long side of the building unit on the second floor, and the floor at the position facing the blowout space 2 A second frame member 6 is provided so as to protrude from the side surface of the small beam 4 on the blow-off space 2 side in the axial direction of the long-side floor large beam 3A, and the first frame member 5 and the second frame member 6 Are joined together to form the floor frame of the landing 7.

  In addition, the side surfaces of the floor beam 4 provided with the second frame member 6 and the adjacent floor beam 4 are connected by a reinforcing beam 8 as a reinforcing member.

  With such a configuration, the floor beam 4 on which the second frame material 6 is provided is reinforced by the reinforcing beam 8 as a reinforcing member so as not to rotate around the axial direction of the material, so that the staircase has sufficient structural strength. The landing 7 of the folding staircase K can be easily formed in the middle part in the longitudinal direction of the building unit 1a on the second floor.

  Here, the reinforcing member is a reinforcing beam 8 that connects the floor beams 4 and 4 on an extension line of the second frame member 6.

  For this reason, since the floor beam 4 can be reinforced with few members, it can implement at low cost.

  Such a building unit 1a on the second floor according to the first embodiment has the above-described structure, and is configured to be used for the unit building U1 according to the first embodiment.

  With such a configuration, if the first frame material 5, the second frame material 6, and the reinforcing beam 8 as a reinforcing member are provided in advance in the building unit 1a on the second floor at a factory or the like, the workability of the unit building U1 can be improved. Can be increased.

  Such a unit building U1 of Example 1 is configured to include the building unit 1a on the second floor of Example 1.

  Since it is such a structure, the unit building U1 which enjoyed the above-mentioned effect of the staircase structure of the unit building of Example 1 can be constructed.

  Next, Example 2 will be described.

  In addition, the description which attaches | subjects the same code | symbol about the description of the same thru | or equivalent part as the content demonstrated in Example 1, and demonstrates.

  FIG. 8 shows a schematic configuration of the staircase structure of the unit building of the second embodiment.

  In the staircase structure of the unit building according to the second embodiment, the waist wall panels 12A and 12A are supported by the column 13 raised from the side surface of the floor beam 4 at the position facing the blowout space 2 on the blowout space 2 side, and dropped. The prevention wall wall 12 is mainly different from the staircase structure of the unit building of the first embodiment.

  Here, as shown in FIGS. 9 and 10, the lower end of the support column 13 is fixed to the bolt holes 13 a and 13 a of the support column 13 and the side surface of the floor beam 4 on the side of the blowout space 2 by welding. Bolts 15 and 15 are screwed into the bolt holes 14 a and 14 a of the mounting member 14.

  The mounting member 14 is provided with nuts 16 fixed to the positions of the bolt holes 14a and 14a in the inside thereof, whereby the support column 13 is firmly fixed to the floor beam 4. .

  For this reason, the support | pillar 13 can be provided as the state which stood up easily from the floor beam 4 of the position which faces the ventilation space 2. FIG.

  Further, as shown in FIG. 11, a crosspiece 17 is fixedly provided by screw nails 18,... On the side surface of the floor beam 4 on the side of the blowout space 2 excluding the portion where the column 13 is provided. And supports an extended portion of the floor surface material 9 composed of the floor base material 91 and the floor finishing material 92, and the extended portion of the floor surface material 9 supports the lower surface of the waist wall panel 12A. .

  In addition, as shown in FIG. 9, the inner wall ends of the waist wall panels 12 </ b> A and 12 </ b> A are fixed to the lip portion of the support column 13 with screws 19,. As shown in FIG. 8, one is fixed to a vertical beam member 20 erected at the end of the second frame member 6, and the other is fixed to an inner wall (not shown).

  For this reason, the waist wall panels 12A and 12A are supported by the support column 13, and the waist wall 12 for preventing the fall can be easily provided.

  Further, since the floor beam 4 at the position facing the blowout space is reinforced by the reinforcing beam 8 as a reinforcing member, the waist wall 12 for preventing the fall can be provided with high strength and in a stable state.

  Other configurations and functions and effects are substantially the same as those in the first embodiment, and thus description thereof is omitted.

  As mentioned above, although the form for implementing this invention has been explained in detail based on Examples 1 and 2 with reference to the drawings, the specific configuration is not limited to Examples 1 and 2 described above. Design changes that do not depart from the gist of the invention are included in the present invention.

  For example, in the first and second embodiments, the unit building U1 has a simple two-story structure so that the description is simple.

  Moreover, in the said Example 1, 2, although the folding staircase K was provided and implemented as a staircase, it is not limited to this, For example, you may implement by a linear staircase etc.

  Furthermore, in the said Example 1, 2, it implemented using the reinforcement beam 8 as a reinforcement member which reinforces between the floor beam 4, 4, but it is not limited to this, For example, using a some reinforcement beam, You may implement using a brace material.

  Moreover, in the said Example 1, 2, although implemented using square steel like the other floor beam 4 as the floor beam 4 of the position which faces the ventilation space 2, it is not limited to this, For example, You may implement using a channel steel etc. with smaller intensity | strength.

  Furthermore, in the said Example 1, 2, although implemented without reinforcing the lower surface of the floor surface material 9 of the landing 7, it is not limited to this, You may implement by reinforcing with a crosspiece.

U1 unit building 1A building body 1B foundation 1a building unit on the second floor (building unit on the upper floor)
1b 1st floor building unit (lower floor building unit)
2 Vented space 3A Floor side beam 3B on the long side Side floor beam 31 on the short side Mounting piece 4 Floor beam 5 First frame material 6 Second frame material 7 Landing place 8 Reinforcement beam (reinforcement member)
9 Floor material 91 Floor base material 92 Floor finishing material 10 2nd floor floor 11 1st floor floor 12 Waist wall 12A Waist wall panel 13 Post 13a Bolt hole 14 Mounting member 14a Bolt hole 15 Bolt 16 Nut 17 Horizontal beam 18 Screw Nail 19 Screw (fastening member)
20 Vertical beam K Folding stairs

Claims (6)

A staircase structure of a unit building in which a staircase is provided in an open space formed inside a lower floor building unit and an upper floor building unit placed thereon,
In the upper floor building unit, a pair of long side floor beams and a pair of short side floor beams are assembled in a substantially rectangular shape, and a plurality of floor beams are between the long side floor beams. A floor frame is formed by laying in the axial direction of the floor beam on the short side, and the floor beam is omitted in the portion where the blowout space is formed,
The first frame material is provided so as to protrude in the axial direction of the floor girder on the short side from the inner surface of the floor girder on the long side of the building unit on the upper floor, and the small floor in a position facing the blow-out space. A second frame member is provided so as to project in the axial direction of the long side floor girder from the side surface on the blow-out space side of the beam, and the leading end portion of the first frame member and the leading end portion of the second frame member are joined together. And the landing floor frame is formed,
A staircase structure of a unit building, characterized in that a side surface of the floor beam adjacent to the floor beam provided with the second frame material is connected by a reinforcing member.   2. The staircase structure of a unit building according to claim 1, wherein the reinforcing member is a reinforcing beam that connects the floor beams on an extension line of the second frame material.   The waist wall panel is supported by a column raised from the floor beam at a position facing the blow-out space, and a waist wall for preventing fall is provided. Stair structure of unit building.   The support column is bolted to the side of the floor beam on the side of the blowout space at a position facing the blowout space via an attachment member in which nuts are respectively fixed to the positions of the bolt holes. The staircase structure of a unit building according to claim 3, wherein the step structure is fixed at the unit.   5. A building unit which is a building unit used as the building unit on the upper floor in the staircase structure of a unit building according to any one of claims 1 to 4.   A unit building comprising the building unit according to claim 5.