JP2013108228A - Ancillary structure and unit building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ancillary structure which: is additionally connected to a building unit configuring a unit building; is capable of expanding an interior space of the building unit; and has flexibility in easily following the building unit.SOLUTION: An ancillary structure 10 comprises: two column materials 11 parallel to a Z axis representing a vertical direction; two beam materials 12 and 13 which are extended in a Y axis direction orthogonal to the Z axis and connect an upper end portion and a lower end portion of the two column materials arranged one above the other; four beam materials 14A, 14B, 15A and 15B which are extended from intersection portions of the two column members and the two beam members in an X axis direction orthogonal to both Z and Y axes; a lower connection beam 16 which connects free ends of the two lower beam materials among the four beam materials; and an upper connection beam 17 which connects the free ends of the two upper beam materials among the four beam materials. The two beam materials extended in a Y direction are fixed to the two column materials with fixtures such as bolts and nuts. The four beam materials extended in an X direction are rigidly fixed to the two column materials. The lower connection beam and the upper connection beam are fixed to the four beam materials with the fixtures such as the bolts and nuts.

Description

  The present invention relates to a small incidental structure connected to a building unit constituting a unit building, and in particular, an incidental structure capable of expanding the internal space of the unit building by being connected, and the same. Regarding unit buildings.

  Conventionally, a small building unit as an incidental structure of this type has four columns, two girder floor beams, two girder floor beams, two girder ceiling beams, and two wives ceilings. A standard building unit, which is a box-shaped ramen with rigidly joined beams, is divided at approximately half of the end face, and the two columns, the girder floor beam connecting the lower ends of both columns, and the upper ends of both columns are connected. It has a girder ceiling beam, a wife floor beam joined to the lower end portion of each column, and a wife ceiling beam joined to the upper end portion of each column. The small building unit further includes a connecting floor beam that connects the tip ends of the both ends floor beams and a connecting ceiling beam that connects the end portions of the both ends ceiling beams (see, for example, Patent Document 1).

JP 2006-77468 A

  By the way, the small building unit having the above-mentioned structure rigidly joins each of the girder beam and the end floor beam to the lower end portion of the column and rigidly connects each of the girder ceiling beam and the end ceiling beam to the upper end portion of the column. The connecting floor beam is pin-joined to the tip of the floor beam, and the connecting ceiling beam is pin-joined to the tip of the both ends ceiling beam. Thus, since the beam material is rigidly joined to the upper and lower ends of the column, large-scale equipment such as welding equipment is required. In addition, since the small building unit has four beam members projecting, there is a problem that loading on a loading platform such as a truck is complicated during transportation and the transportation cost also increases.

  The present invention has been made in view of such problems, and the object thereof is an incidental structure that can be connected to a building unit and connected to expand an indoor space, has a simple configuration, and can reduce costs. Is to provide. It is another object of the present invention to provide an incidental structure that is easy to manufacture and can be easily transported. It is another object of the present invention to provide a unit building capable of providing a heavy appearance by changing the appearance by connecting the incidental structure to a building unit.

  In order to achieve the above object, the incidental structure according to the present invention is a small incidental structure that is connected to one elevation surface of a rectangular parallelepiped building unit constituting the unit building and expands the internal space of the building unit. The incidental structure connects two pillars parallel to the Z-axis indicating the vertical direction and the upper and lower ends of the two pillars extending in the Y-axis direction perpendicular to the Z-axis. The four beam members extending in the X-axis direction orthogonal to the Z-axis and the Y-axis from the intersection of the two column members and the two beam members; A lower connecting beam that connects the free ends of the two lower beams among the two beams, and an upper connecting beam that connects the free ends of the upper two beams of the four beams The lower connecting beam and the upper connecting beam are opposed and connected to a member constituting the one elevation surface of the building unit. The two beam members extending in the Y direction are fixed to the two column members by a fixture such as a bolt and nut, and the four beam members extending in the X direction are the two beam members. The lower connecting beam and the upper connecting beam are rigidly joined to a column member, and are fixed to the four beam members by a fixture such as a bolt and nut.

  The incidental structure of the present invention configured as described above is connected to one elevation of a rectangular parallelepiped building unit that constitutes a unit building, so that the internal space of the basic building unit can be expanded. , The appearance of the unit building can be changed, and a solid appearance with unevenness can be obtained. Also, it is composed of two column members in the Z direction, two beam members in the Y direction, four beam members in the X direction, an upper connecting beam and a lower connecting beam, and is formed with a small number of parts. Can do. Furthermore, two column members in the Z direction and two beam members in the Y direction constitute one elevation surface, the upper beam member in the Y direction, the two upper beam members in the X direction, and the upper connecting beam. The upper surface is composed of the lower beam material in the Y direction, the lower two beam materials in the X direction, and the lower connecting beam, and the upper surface and the lower surface are connected to the upper and lower sides of the vertical surface, and the side view is omitted. Since the U-shaped body is formed as an incidental structure, the structure is easy to follow the building unit when connected to the building unit with a flexible structure. For this reason, when external force acts on an incidental structure, it can suppress that an excessive force is applied to a junction part with a building unit, etc.

  Moreover, as a preferable specific aspect of the incidental structure according to the present invention, the two columnar members are formed of a rod-shaped steel having a substantially square cross section, and at least one of upper and lower end portions thereof. An opening and a flat connecting portion continuous to the opening are formed, and at least one of the two beam members extending in the Y direction via the connecting portion is fixed by the fixture. It is a feature.

  In the incidental structure configured as described above, the column material is formed of the B-shaped steel having a closed cross-sectional shape having a substantially R-shaped cross section, and therefore, the two column materials formed of the B-shaped steel are disposed outside. Thus, even when a unit building combining this incidental structure and a building unit is constructed in a fire prevention area, the fireproof coating can be omitted, and the construction can be simplified. Moreover, when connecting an auxiliary | assistant structure up and down through the opening part of a pillar material and connecting it, pillar materials can be connected easily. Furthermore, by forming the opening at the lower end of the column member, the incidental structure can be easily connected and fixed to the foundation or the like.

  Furthermore, as another preferred specific aspect of the incidental structure according to the present invention, the two beam members extending in the Y direction have end members joined to the end portions, and the two column members are connected to the two column members. It is characterized by being connected with a fixture. In the incidental structure configured in this way, end members are joined to the ends of the two beam members extending in the Y direction, and two bolt members are attached to the two column members via the end members. Since the beam members can be connected and fixed, the construction can be facilitated.

  As a preferred embodiment, two beam frames having a U-shape in side view are formed by the four beam members extending in the X direction and the two column members, and the sleeve frame bears only a vertical load. According to this configuration, when a horizontal external force is applied to the incidental structure, the horizontal force is transmitted to the building unit main body through the horizontal surface composed of four upper beams or lower beams, and the sleeve frame is vertically Since only the load is borne, the configuration can be simplified, and the weight can be reduced and the cost can be reduced.

  As another preferred embodiment, the four beam members extending in the X direction are formed of channel steel or C-shaped steel, and two of the four beam members positioned below are A floor material mounting portion is provided that has a horizontal protruding portion that rises from an end portion of the upper flange and protrudes horizontally from an upper end of the rising portion. According to this configuration, the floor material can be easily fixed to the upper surface of the floor material mounting portion, and therefore the construction of the floor material can be simplified.

  The upper connecting beam is preferably formed of L-shaped steel. According to this configuration, it is possible to further reduce the weight and reduce the cost by forming the upper connecting beam on the building unit side that has relatively little influence on the strength with the L-shaped steel and simplifying it. Further, it is preferable that a horizontal reinforcing plate for closing the upper and lower openings of the rod-shaped steel is fixed to the column material. According to this configuration, the openings at the upper and lower ends of the column member are closed by the horizontal reinforcing plate, and the beam member is connected in the vicinity of the reinforcing plate, so that the strength of the upper and lower end portions of the column member can be improved.

  Moreover, it is preferable that the length along the said long side direction of the said incidental structure is short rather than the length along the long side direction of the said building unit. According to this configuration, along the length in the long side direction of the building unit, an incidental structure shorter than the length in the long side direction is connected, and the indoor space in the long side direction is reinforced without reinforcing the strength of the building unit. Can be efficiently expanded, and the appearance of the unit building can be diversified.

  Furthermore, it is preferable that the two upper and lower beam members extending in the X direction are connected and fixed by a temporary column parallel to the column material. According to this configuration, the open ends of the four beam members projecting in the X direction from the upper and lower ends of the two column members are connected by the temporary columns parallel to the column members, so that it can be used during transportation. It is possible to prevent the open end of the beam material from being deformed by the applied external force.

  The unit building according to the present invention is characterized in that any of the incidental structures described above is connected and fixed to the building unit. And it is preferable that the said building unit is a load bearing structure to which all the column materials and beam materials are rigidly joined. The unit building configured as described above has a flexible structure in which the attached and fixed structures are flexible, and the flexible structure can absorb the displacement in the event of an earthquake or strong wind together with the building unit that is a load-bearing structure. Furthermore, the incidental structure is connected and fixed to an outer surface of the building unit. A unit building that connects multiple building units, and by connecting incidental structures to the outer surface, that is, the outer peripheral side, rather than the joint surface between building units, the appearance of the unit building can be undulated, and a simple design Can be changed.

  In the unit building according to the present invention, the incidental structure connected to one elevation of the building unit is formed to be shorter in the horizontal direction than the one elevation, and the building unit is formed of the incident structure. The beam member facing the column member is reinforced by a reinforcing member. In a unit building constructed in this way, the horizontal length of the incidental structure is shorter than the building unit, and the beam of the building unit is reinforced even if the column of the building unit and the column of the incidental structure do not match. Since it is reinforced by the member, the connected state is stabilized.

  The incidental structure of the present invention is configured with a small number of components and is connected and fixed to a building unit constituting the unit building, whereby the internal space of the building unit can be expanded with a slight increase in cost. In addition, by connecting and fixing the incidental structure of the present invention to a unit building formed by juxtaposing or overlapping a plurality of building units, the appearance of the unit building can be changed, and the appearance of the uneven and heavy appearance can be increased. Unit buildings can be formed. Further, the incidental structure is configured with its own strength suppressed, and has a flexible structure that easily follows the connected building units. It can also be easily transported to the construction site.

The perspective view of the building unit to which the incidental unit which is an incidental structure which concerns on this invention is connected and fixed. The principal part perspective view which shows the junction part of the column material and beam material of the building unit of FIG. The principal part perspective view which shows the junction part of the column material and reinforcement plate of the building unit of FIG. 1 shows a joint between a reinforcing plate and a beam of the building unit of FIG. 1, (a) is a plan view of the main part, (b) is a front view of the main part, and (c) is along the d0-d0 line of (b). Sectional drawing. (A) is a perspective view of one embodiment of an accessory unit connected and fixed to the building unit of FIG. 1, (b) is a schematic diagram showing the surface configuration, and (c) is a perspective view of a modification of the accessory unit. The perspective view of the state which decomposed | disassembled the incidental unit shown to Fig.5 (a). The principal part side view which shows the state which connected and fixed the incidental unit shown by Fig.5 (a) to the building unit shown by FIG. (A) is a principal part perspective view of the state which decomposed | disassembled A part of Fig.5 (a), (b) is a principal part perspective view which shows the example of a change of a lower beam. Sectional drawing which follows the d1-d1 line | wire of FIG. Sectional drawing which follows the d2-d2 line | wire of FIG. The principal part perspective view of the state which decomposed | disassembled the B section of Fig.5 (a). The top view which follows the d3-d3 line | wire of FIG. D4-d4 sectional view taken on the line of FIG. D5-d5 sectional view taken on the line of FIG. D6-d6 sectional view taken on the line of FIG. (A) is the d7-d7 sectional view taken on the line of FIG. 15, (b) is sectional drawing equivalent to (a) which shows the example of a change of a lower beam. 5A shows details of a sleeve frame on the left side of the accessory unit shown in FIG. 5A, FIG. 5A is an elevation view on the left side, FIG. 5B is a plan view of FIG. 5A, and FIG. 5C is a left side of FIG. (D) is a right side view of (a), (e) is a bottom view of (a), and (f) is a side view of an essential part of a modification of part f of (a). The state which connected the incidental unit which concerns on this invention to the unit building is shown, (a) is a principal part perspective view which connected the incidental unit to the short side direction and long side direction of one building unit, (b) is two buildings A perspective view of the main part in which one accessory unit is connected in the short side direction of the first floor of a unit building using four building units with two layers, (c) is in the long side direction of the first floor of the unit building The main part perspective view which connected one incidental unit, (d) is a unit which arranged two building units in two layers and arranged the building units on the first floor. FIG. The state which connected the incidental unit which concerns on this invention to the unit building is shown, (a) connects the incidental unit for short sides in the long side direction of the building unit of the first floor of the unit building which made two building units into two layers. The principal part perspective view which was made, (b) is the principal part perspective view which connected the incidental unit so that it might continue in the short side direction of the two building units of the 1st floor of the unit building which made two building units into two layers. (A), (b) is explanatory drawing which shows transmission of the vertical load and horizontal load of a unit building corresponded to FIG.18 (b). The state which connected the other incidental unit which concerns on this invention to the unit building, (a) The principal part perspective view which connected the incidental unit to the short side direction of one building unit, (b) is d8 part of (a) The arrow view seen from d9-d9 direction of (b), (c) is the arrow view seen from d10-d10 direction of (b). The example of a change of the lower beam of FIG. 21 is shown, (a), (b) is an arrow line view equivalent to FIG.21 (b), (c), respectively. The perspective view of the state which decomposed | disassembled the principal part which shows the other example of the connection structure of the beam material of a building unit, and the beam material of an incidental unit. The top view which made a part of FIG. 23 the cross section. The front view and side view which show the modification of the nut used by FIG. Sectional drawing which shows the principal part which shows the other modification of the connection structure of an incidental structure and a building unit. The perspective view which shows the state which connected other embodiment of the incidental structure to the unit building.

  Hereinafter, one embodiment of an incidental structure concerning the present invention is described in detail based on a drawing. First, the building unit to which the incidental structure of this embodiment is connected and fixed will be described with reference to FIGS. FIG. 1 is a perspective view showing a main part configuration of a building unit, FIG. 2 is a main part perspective view showing a joint part between the column member and the beam member of FIG. 1, and FIG. 3 is a joint part between the pillar member and the reinforcing plate. FIG. 4 is a main part plan view, a main part front view, and a cross-sectional view showing a joint part between a reinforcing plate and a beam member.

  First, the building unit which can connect the incidental unit which is an incidental structure, and can expand the internal space is demonstrated. 1 and 2, the building unit 1 has a box ramen structure formed by joining steel structural members into a rectangular parallelepiped shape by welding, and includes four column members 2, 2,. Long side direction lower beams (floor beams) 3, 3 connecting the lower ends of the column materials in the horizontal direction, short side direction lower beams (floor beams) 4, 4, and four column materials 2, 2, ... Are formed in a rectangular parallelepiped shape from upper beams (ceiling beams) 5 and 5 in the long side direction and upper beams (ceiling beams) 6 and 6 in the short side direction. In the building unit 1, floor joists 7, 7... Are installed between the lower beams 3 and 3 at a predetermined interval, and ceiling joists 8, 8. Each column member and each beam member are welded with reinforcing plates 9, 9... Interposed at the corners to enhance the rigidity of the building unit 1. The building unit 1 is a load-bearing structure whose structure is calculated. Then, a horizontal floor construction surface along the XY plane is formed by the lower beams 3, 3, 4, 4 and the floor joists 7, 7..., And the upper beams 5, 5, 6, 6 and the ceiling joists 8, 8... Form a horizontal ceiling structure along the XY plane.

  Specifically, in the building unit 1, as shown in FIGS. 2 to 4, a reinforcing plate 9 is interposed at the joint between the column member 2 and the beam member (lower beam 3, 4, upper beam 5, 6). In addition, the rigidity is enhanced by reinforcing the joint between the column member 2 and the beam member. As shown in FIG. 3, the upper plate portion 9a is welded by the weld portion w1 and the vertical plate portion 9b is welded by the weld portion w2. The lower plate portion 9c is welded and welded at the weld portion w3. The other reinforcing plates 9, 9... Are similarly firmly welded. In addition, as shown in FIG. 4, the joint portion between the beam member 3 and the reinforcing plate 9 is firmly welded to the upper and lower plate portions of the beam member by weld portions w4 to w6. The plate portion is firmly welded at the weld portions w7 and w8. In addition, as shown with a dashed-two dotted line, you may comprise so that it may weld firmly by the spot parts s1-s3 by spot welding. Thus, the building unit 1 has a highly rigid structure in which the column member and the beam member are firmly joined with the reinforcing plate interposed.

  In the rectangular parallelepiped of the building unit 1, the long side direction will be described as the X direction, the short side direction as the Y direction, and the height direction as the Z direction. The building unit 1 has a long length of about 2 to 5.6 meters in the long side direction (X direction), for example, and a length of about 1.3 or 2.5 meters in the short side direction (Y direction). And the length in the height direction (Z direction) is about 2.5 to 3 meters. That is, the building unit 1 has two elevation surfaces (XZ plane) along the long side direction, two elevation surfaces (YZ plane) along the short side direction, an upper surface, and a bottom surface (XY plane). It is comprised from these six surfaces.

  As shown in FIGS. 5 to 7, the incidental unit 10 connected and fixed to the building unit 1 includes two column members 11 and 11 parallel to the Z axis indicating the vertical direction, and a Y axis direction orthogonal to the Z axis. As the two beam members that extend and connect the upper and lower ends of the two column members 11, 11, the lower beam 12 and the upper beam 13, the two column members 11, 11, and the two beam members 12, Four beam members 14A, 14B, 15A, and 15B extending from the intersection with 13 in the X-axis direction orthogonal to the Z-axis and the Y-axis, and two lower beam members among the four beam members The lower connecting beam 16 connects the free ends of 14A and 14B, and the upper connecting beam 17 connects the free ends of the two upper beam members 15A and 15B out of the four beam members. That is, the incidental unit 10 is basically composed of ten column members and beam members, and has a small number of parts.

  The incidental unit 10 includes upper beams 15A and 15B and lower beams 14A and 14B extending in the direction protruding from the attachment surface to which the incidental unit 10 of the building unit 1 is attached, that is, the X direction, and one column member 11, and is omitted in side view. A U-shaped sleeve frame 18 is formed, and two surfaces are formed so that the sleeve frames face each other. The two sleeve frames 18 and 18 are synonymous with side surfaces 18 and 18 to be described later. In addition, a floor construction surface is formed as a horizontal construction surface by the four lower beams 14A, 14B, 12, and 16, and a ceiling construction surface is formed by the four upper beams 15A, 15B, 13, and 17 as a horizontal construction surface. Is formed. The floor construction surface may be composed of lower beams 12 and 16 and a plurality of floor joists connecting them. The ceiling construction surface may be composed of the upper beams 13 and 17 and a plurality of ceiling joists connecting them, and the four upper beam members 15A, 15B, 13, and 17 and these beam members are paired. You may comprise with the horizontal brace material connected to a corner.

  And the incidental unit 10 has four beam members 14A and 14B so as to be connected to the side surface (YZ plane) on the short side which is one elevation surface of the rectangular parallelepiped building unit 1 having six surfaces. , 15A and 15B are formed in the same rectangular shape as the side surface on the short side of the building unit 1, and the length along the long side direction of the building unit 1 is set short. For example, while the length of the long side direction of the building unit 1 is about 2 to 5.6 meters, the length of the accessory unit 10 in the X direction is about 0.45 to 2 meters. Is set. With this configuration, when the incidental unit 10 is connected and fixed to the building unit 1, the building unit 1 is extended in the longitudinal direction (X direction) and has a shape in which no protruding portion or stepped portion is generated.

  As described above, the incidental unit 10 of the present embodiment includes a sleeve frame 18 having a U-shaped side view in which the beam members 14A and 14B extending in the X direction are rigidly joined to the upper and lower ends of the column member 11, and A side-view U-shaped sleeve frame 18 in which beam members 14A and 14B extending in the X direction are rigidly joined to the upper and lower ends of one pillar member 11 and the sleeve frames 18 and 18 are connected to each other. The lower beam 12 and the upper beam 13 in the Y direction are connected to each other by the lower connecting beam 16 and the upper connecting beam 17 in the Y direction. The lower beam 12 and the upper beam 13 in the Y direction are connected and fixed to the column member 11 by a fixture 23 such as a bolt and nut, and the lower connection beam 16 and the upper connection beam 17 in the Y direction are fixed by a fixture such as a bolt and nut. It is connected and fixed to the free ends of the materials 14A, 14B, 15A and 15B. For this reason, the accessory unit 10 can be transported by being divided into two substantially U-shaped sleeve frames 18, 18 and four beams as a lower beam 12, an upper beam 13, a lower connecting beam 16 and an upper connecting beam 17. Therefore, it can be done easily.

  Further, the accessory unit 10 of the present embodiment is substantially the same as described above, in which the two sleeve frames 18 and 18 that are substantially U-shaped in a side view are connected by the four beam members 12, 16, 13, and 17 in the Y direction. It is comprised by the U-shaped body, the structure is simple and cost reduction is possible. That is, as shown in FIG. 5B, the incidental unit 10 of the present embodiment has one elevation surface with two column members 11 and 11 in the Z direction and two beam members 12 and 13 in the Y direction. P1 is configured, and the upper beam P2 is configured by the beam member 13 above the Y direction, the two beam members 15A and 15B above the X direction, and the upper connecting beam 17, and the beam member 12 below the Y direction and the X direction A lower surface P3 is formed by the two beam members 14A and 14B below the lower connecting beam 16 and the lower connecting beam 16, and the upper surface P2 and the lower surface P3 are connected to the upper and lower sides of the upright surface P1 to form a substantially U-shaped body in side view. To make an incidental structure.

  The column members 11 and 11 constituting the accessory unit 10 are formed of a rod-shaped steel having a substantially square cross section, the beam members 12 and 13 in the Y direction, the beam members 15A and 15B in the upper direction in the X direction, and the lower connection. The beam 16 is formed of channel steel or C-shaped steel having a substantially U-shaped cross section. The beam members 14A and 14B below the X direction, as will be described in detail later, are a rising part extending upward from the tip of the upper flange having a U-shaped cross section, and a horizontal extending from the tip of the rising part in the horizontal direction. Although it has a protruding portion, it may be composed of beam members 14C and 14D having a U-shaped cross section, as in the accessory unit 10A shown in FIG.

  Since this incidental unit 10 is basically connected and fixed to one elevation surface of the adjacent building unit 1, it has a structure of a non-bearing structure depending on the strength of the basic building unit 1. Even if the strength of 10 itself is loose, there is no problem. That is, the incidental unit 10 does not require the strength calculated for the structure, but only requires the strength for maintaining the space, and thus can achieve a cost reduction. As described above, the incidental unit 10 has a flexible structure with an open side, and when an external force is applied to the incidental unit 10 connected to the building unit 1, an unreasonable force is applied to the joint portion with the building unit 1. Can be suppressed.

  Hereinafter, details of the accessory unit 10 will be described with reference to FIGS. The column members 11 and 11 are formed of rod-shaped steel having a substantially square cross section, and the Y direction beam members 12 and 13, the X direction beam members 14A, 14B, 15A and 15B, and the lower connecting beam 16 are cross sections. The shape is formed from a substantially U-shaped grooved steel or C-shaped steel. The upper connecting beam 17 is formed of an angle member having an L-shaped cross section. By forming the upper connecting beam 17 from an angle member, the incidental unit 10 can be reduced in weight and cost can be reduced without any problem in strength. The accessory unit 10 is connected and fixed to a member constituting one elevation surface of the building unit 1. Specifically, the lower connecting beam 16 of the accessory unit 10 is opposed to the lower beam 4 of the building unit 1, and the upper connecting beam 17 is opposed to the upper beam 6 of the building unit 1, so that the four beam members 14 </ b> A, 14 </ b> B, The end portions of 15A and 15B are brought into contact with the column members 2 and 2 to be connected and fixed. Details of the connection and fixing of the incidental unit 10 to the building unit 1 will be described later.

  First, the A part of FIG. 5A which shows the principal part structure of the incidental unit 10 is demonstrated with reference to FIGS. Reinforcing plates 20 and 21 are fixed to the upper and lower ends of the column members 11 and 11 in the Z direction, respectively, and the four beam members 14A, 14B, 15A and 15B extending in the X direction are the two column members 11 and 11, respectively. 11 are rigidly joined to the upper and lower ends by welding or the like. The two beam members 12 and 13 extending in the Y direction are fixed to the two column members 11 and 11 by a fixture such as a bolt and nut. Specifically, the upper end portion of the column member 11 is adjacent to the reinforcing plate 20 as a connecting portion for connecting the upper beam 13 and the column member 1 to the surface facing the upper beam 13 of the column member 11. Two through-holes 11c and two nuts 11d fixed inside by welding or the like are provided.

  Further, an end plate 13a is fixed to the upper beam 13 at an end facing the column member 11, and two through holes 13b are formed at positions corresponding to the through holes 11c of the column member. In this way, the reinforcing plate 20 is fixed to the upper end portion of the rod-shaped steel column 11, and a connecting portion including the through hole 11c and the nut 11d is provided in the vicinity of the reinforcing plate, and the upper beam in the Y direction is provided. The upper beam 13 can be connected and fixed to the column member 11 by screwing it into the nut 11d through a bolt 22 as a fixture such as a bolt and nut in a through hole 13b of the end plate 13a.

  Moreover, as a connection part which connects the lower beam 12 and the column material 11, the opening part 11e for connecting the lower beam 12 and the column material 11 adjacent to the lower reinforcement board 21, and the flat connection part 11f are provided. Is formed. The opening 11e is formed at a right angle across the surface connecting the lower beam 12 and the surface facing the beam member 14B adjacent to this surface, and has a width equivalent to the flange of the lower beam 12 at the same height as the lower beam 12. The height of the connecting portion 11f is left, and the flat connecting portion 11f is formed with two through holes 11g.

  An end plate 12a is fixed to the lower beam 12 by welding or the like so as to face the column member 11, and a through hole 12b through which two bolts 22 are inserted is formed in the end plate 12a. The through hole 12 b formed in the end plate 12 a is formed at a position corresponding to the through hole 11 g formed in the connecting portion 11 f of the column member 11. Then, the end plate 12a is brought into contact with the flat connecting portion 11f, the bolt 22 is inserted from the opening 11e, passed through the through hole 11g of the column member 11 and the through hole 12b of the end plate, and the protruding end portion of the bolt 22 The lower beam 12 can be connected to the column member 11 by screwing the nut 23 into the column member 11. The lower beam 14B rigidly joined in the X direction at the lower end of the column 11 is a lower beam 14D made of C-shaped steel or channel steel having a substantially U-shaped cross section as shown in FIG. 8B. It is good. This modified example corresponds to the incidental unit 10A shown in FIG.

  Next, a portion B of FIG. 5A showing the configuration of the main part of the accessory unit 10 will be described with reference to FIGS. The X-direction beam members 14A, 14B, 15A, and 15B rigidly joined to the upper and lower ends of the column members 11 and 11 in a cantilever state by welding or the like have their free ends in the Y direction as shown in FIG. The lower connecting beam 16 and the upper connecting beam 17 are connected by a fixture such as a bolt and nut. Specifically, an end plate 25 is fixed to the end portion of the upper beam member 15B by welding or the like, and the end plate 25 can come into contact with the column member 2 of the building unit 1.

  A joint plate 26 is fixed to the upper beam member 15B in the vicinity of the end plate 25. The joint plate 26 is positioned at a right angle to the end plate 25, and is fixed so as to face the end plate 17 a fixed to the end of the upper connecting beam 17. Two through holes 26a are formed in the joint plate 26, and a through hole 17b is also formed in the end plate 17a at a position corresponding to the through hole 26a. By passing the bolt 22 through the through hole 17b and the through hole 26a and tightening with the nut 23, the upper beam member 15B and the upper connecting beam 17 can be connected and fixed. The connection between the other end of the upper connecting beam 17 and the upper beam member 15A is not shown, but has the same configuration.

  The beam members 14A and 14B below the X direction are basically formed of C-shaped steel or channel steel having a substantially U-shaped cross section, and this steel material has a rising portion 14c rising from the end of the upper flange, A flooring attachment portion having a horizontal protruding portion 14d protruding horizontally from the upper end of the rising portion is provided. As shown in FIG. 16A, a flooring 19 is placed on the upper surface of the horizontal protrusion 14d that rises at a predetermined height from the upper flanges of the beam members 14A and 14B, and screws or the like are placed from above the flooring 19. The flooring 19 can be easily fixed to the incidental unit 10 by screwing. Further, as shown in the lower beams 14C and 14D of FIG. 16B, in the case of a beam material having a substantially U-shaped cross-section, the support material 28B is fixed to the receiving material 28A, and the flooring 19 is fixed to screws, nails or the like. Secure with.

  Next, the connection and fixing of the free ends of the lower beam members 14A and 14B and the lower connection beam 16 will be described. As shown in FIGS. 11, 14, and 15, end plates 27 and 27 are fixed to the free ends of the lower beam members 14 </ b> A and 14 </ b> B by welding or the like, and the end plate 27 is a lower part of the column member 2 of the building unit 1. It is comprised so that it may contact | connect. Joint plates 28 and 28 are fixed to the lower beam members 14A and 14B in the vicinity of the end plates 27 and 27, respectively. The joint plate 28 is positioned at a right angle to the end plate 27 and is fixed so as to face the end plate 16 a fixed to the end of the lower connecting beam 16.

  The joint plate 28 is formed of a substantially U-shaped steel plate in a side view, and upper and lower parallel portions are fixed to upper and lower flanges of the beam member 14B by welding or the like. Two through holes 28a are formed in the joint plate 28, and two through holes 16b are also formed in the end plate 16a of the lower connecting beam 16 at positions corresponding to the through holes 28a. The bolt 22 is passed through the through-hole 16b and the through-hole 28a, and the lower beam member 14B and the lower connecting beam 16 can be connected and fixed by tightening with a nut 23. The connection between the other end of the lower connecting beam 16 and the lower beam member 15A is not shown, but has the same configuration.

  The lower beams 14A and 14B rigidly joined in the X direction at the lower ends of the column members 11 and 11 are formed on the lower surface adjacent to the column member 11 at the end portion on the free end side, as shown in FIGS. Spacers 29 and 29 are fixed. The spacer 29 is formed from a rectangular steel plate and is configured to contact the upper surface of the foundation when the accessory unit 10 is installed on the foundation K. With this configuration, the weight of the incidental unit 10 is supported by the two column members 11 and 11 and the spacers 29 and 29.

  Here, the structure which connects the incidental unit 10 to the building unit 1 is demonstrated. As an upper connecting portion, a connecting portion for connecting the upper part of the incidental unit 10 to the building unit 1 is formed on the end plate 25 fixed to the ends of the beam members 15A and 15B. Three through holes 25a are formed in the end plate 25, and three through holes 30 are similarly formed in the column member 2 of the building unit 1 so as to oppose these through holes. A nut 31 is fixed inside the three through holes 30 by welding or the like.

  A tapered guide pin 32 is screwed into one of the three through holes 30 of the column 2 and the guide pin is inserted into one through hole 25a, whereby the other two through holes 30 and the end plate are inserted. The two through holes 25a can be aligned. For this reason, the structure which can connect the upper part of the incidental unit 10 to the upper part of the building unit 1 by passing the volt | bolt 22 through the other two through-holes 25a, and screwing in the nut 31 in the through-hole 30 of the pillar material 2. It has become.

  The connecting portion below the incidental unit 10 and the building unit 1 is configured to connect the lower connecting beam 16 and the lower beam 4 of the building unit 1 with two connecting plates 33 and 33. The connection plate 33 is made of a steel plate, is formed in a horizontal rectangular shape straddling the lower connection beam 16 and the upper flange of the lower beam 4, and has four through holes. A through-hole having the same diameter is formed in the lower connecting beam 16 and the upper flange of the lower beam 4 in accordance with the four through-holes. Bolts 22 are passed through through holes formed in the through holes of the connecting plates 33, 33, the lower connecting beam 16, and the upper flange of the lower beam 4, and fixed with nuts 23, so that the lower part of the accessory unit 10 is attached to the building unit 1. It is configured to connect to the lower part.

  The accessory unit 10 of this embodiment has two substantially U-shaped sleeve frames 18 and 18 in a side view, and these sleeve frames have a shape that easily deforms during transportation, for example. For this reason, it is preferable to attach a temporary column 35 as shown in FIG. 17 between the upper beam 15B and the lower beam 14B of the sleeve frame 18. The temporary column 35 is formed of C-shaped steel or grooved steel having a substantially U-shaped cross section, and end plates are fixed to upper and lower ends by welding or the like, and through holes, upper beams 15B, and lower beams formed in the end plates are formed. It is structured to be connected and fixed with bolts and nuts through through holes formed in the flange of the beam 14B. The temporary column connecting the upper beam and the lower beam can be a temporary column 35A having a dividing portion 36 in the middle as shown in FIG. In this temporary column 35A, the dividing portion 36 is connected by two bolts and nuts, and can be easily attached and detached by removing the bolts and nuts.

  Next, the operation of connecting and fixing the accessory unit 10 of the present embodiment to the building unit 1 will be described below. The mounting surface of the accessory unit 10 configured as described above is opposed to the mounted surface of the building unit 1. By inserting guide pins 32 projecting from the upper parts of the column members 2 and 2 of the building unit 1 into the through holes 25 a of the incidental unit 10, the mounting holes 30 and 30 of the column members 2 and 2 of the building unit 1 and the incidental unit 10 The end plates 25, 25 fixed to the upper beams 15A, 15B are in close contact so that the through holes 25a, 25a communicate with each other. Then, the bolt 22 is inserted from the end hole 25 a side of the end plate 25, and is screwed into the nut 31 fixed inside the column member 2 and tightened. The bolt 22 can be easily inserted through the space behind the joint plate 26, and the upper part of the accessory unit 10 can be connected to the building unit 1. In this state, the lower connecting beam 16 of the incidental unit 10 and the lower beam 4 of the building unit 1 face each other with a predetermined interval.

  Next, a rectangular connecting plate 33 is placed between the lower connecting beam 16 of the accessory unit 10 and the lower beam 4 of the building unit 1 facing the auxiliary unit 10, and the through hole of the connecting plate 33 and the through hole of the lower beam 4 The nuts 23 are tightened through the four bolts 22 in the through holes of the lower connecting beam 16 to connect and fix the lower connecting beam 16 and the lower beam 4. Thereby, the upper part and the lower part of the incidental unit 10 are connected and fixed to the building unit 1 in the X-axis direction.

  Thus, when the incidental unit 10 is connected and fixed to the building unit 1, the internal space of the building unit 1 is expanded by the amount of the incidental unit 10, and the internal space can be used effectively. For example, as shown in FIG. 18A, when the accessory unit 10 is connected and extended in the long side direction (X direction) of the building unit 1, or the accessory unit 10B is connected in the short side direction (Y direction). May be extended. The accessory unit 10B is basically the same as the accessory unit 10 except that the length of the four beam members connecting the two sleeve frames 18a and 18a (YZ plane) is long. .

  In FIG. 18B, two building units 1 are stacked in two layers, and four unit units are combined to form a unit building H, and the incidental unit 10 is connected and fixed to the unit on the left of the first floor of the unit building H. . In this example, the incidental unit portion protrudes from the shape of the rectangular parallelepiped of the unit building H to change the appearance, and this incidental portion can be used as, for example, an entrance portion. Moreover, it is not restricted to a front door part, For example, the interior space of a living room can be expanded and it can utilize as a storage space. In the incidental unit 10 shown in this example, a base portion (not shown) on which the building unit 1 is placed is also formed in the incidental unit portion, and the incidental unit 10 can flexibly absorb the load following the building unit 1.

  In FIG. 18 (c), four building units 1 are combined to form a unit building H, and the long side direction connected along the long side direction (X direction) of the building unit 1 constituting the unit building H is used. The incidental unit 10B is connected and fixed to the first-floor building unit 1. Also in this example, the appearance of the unit building H can be changed, and the internal space of the building unit 1 on the first floor can be expanded and effectively used. The incidental unit 10B shown in this example is mounted on the first floor, and the incidental unit 10B is installed on the foundation and can flexibly follow the building unit.

  In FIG. 18D, a unit building H is constructed by combining four building units 1 up and down and arranging one building unit 1 on the first floor in the X direction and combining five building units. The incidental unit 10 connected along the short side direction (Y direction) is connected and fixed to a portion obtained by combining four H building units and a corner portion of the first floor of one building unit. Also in this example, the incidental unit 10 can be effectively used for the entrance space or the like.

  In FIG. 19A, four building units 1 are combined to form a unit building H, and along the long side direction (X direction) of the building unit 1 constituting the unit building H, an accessory unit for a short side. 10 is connected and fixed to the building unit 1 on the first floor. In this example, a part of the internal space of the building unit 1 on the first floor can be enlarged. In addition, the appearance of the unit building H can be changed. In addition, in this example, it is preferable to install an intermediate column in the middle part of the long side direction of the building unit 1 connecting the incidental unit 10 according to the beam members 14A, 14B, 15A, 15B of the incidental unit 10.

  In FIG. 19B, four building units 1 are combined to form a unit building H, and two buildings on the first floor are formed along the short side direction (Y direction) of the building unit 1 constituting the unit building H. The accessory unit 10 </ b> C is connected and fixed so as to be continuous with the units 1 and 1. This accessory unit 10C is also configured in the same manner as the accessory units 10 and 10A, and is configured by connecting two sleeve frames with four beam members. In this example, the internal space can be expanded continuously to the two building units 1 and 1 on the first floor, and the appearance of the unit building H can be changed.

  20 (a) and 20 (b), the incidental unit 10 is connected to the first floor portion of a two-story unit building in which two building units 1 are stacked on the first and second floors shown in FIG. 18 (b). It is fixed. In this example, as shown in (a), the vertical load on the ceiling surface of the incidental unit 10 is a columnar material 11 of a sleeve frame (corresponding to the side surface 18 in the above-described embodiment) via the eaves end beam and the eaves end beam, The vertical load on the floor surface is also transmitted to the lower beam 4 of the eaves side of the sleeve frame 18 and the lower beam 4 of the building unit 1 via the lower connection beam 16 of the eaves side. , And finally transmitted to the foundation K.

  Further, the horizontal load on the first floor due to the seismic force and wind pressure applied to the incidental unit 10 is transmitted to the building unit 1 from the ceiling frame (ceiling structure) on the first floor, and the column material 2 of the building unit 1 is And finally transmitted to the base K. Thus, since the vertical load and the horizontal load applied to the incidental unit 10 are transmitted to the building unit 1 and the foundation K, the incidental unit 10 preferably follows the building unit 1 with a flexible structure. The accessory unit 10 of the present embodiment has a structure in which the side sleeve frames 18 and 18 are flexible and can easily follow the building unit 1. That is, since the sleeve frames 18 and 18 bear a vertical load and the horizontal load is transmitted to the building unit 1, it is possible to suppress an excessive force from being applied to the connecting portion with the building unit 1. .

  Next, another embodiment of the incidental structure according to the present invention will be described with reference to FIG. In the incidental unit 10D of this embodiment, the width in the direction of the incidental unit is slightly smaller than the width in the short side direction of the building unit 1 as compared with the above-described embodiment, and the columnar material 2 and the incidental on one side of the building unit are included. When the beam material on one side of the unit is matched, the column material 2 on the other side of the building unit and the beam materials 14A and 15A on the other side of the accessory unit 10 are slightly shifted by the thickness of the outer wall panel PL. It is. In this case, the column member 2 and the beam member of the matching building unit are connected in the same configuration as in the above embodiment, but the column member 2 and the upper beam member are connected on the shifted side. The bolt 22 is screwed into the nut 31 and connected to the nut 31 in a state where the center is shifted from 15A, and the lower beam 4 and the lower connecting beam 16 are connected by the bolt nuts 22 and 23 using the connection plate 33. Other substantially equivalent configurations are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 21, the incidental unit 10D connected to the building unit 1 includes two column members 11, X-direction beam members 14A, 14B, 15A, and 15B, and Y-direction beam members as in the above-described embodiment. 12 and 13, a Y-direction lower connecting beam 16, and an upper connecting beam 17. The beam members 14 A, 14 B, 15 A, and 15 B are rigidly joined to the top and bottom of the column members 11, 11, and the beam members 12, 13 are formed. Are bolted to the column members 11 and 11, and the lower connecting beam 16 and the upper connecting beam 17 are also bolted. Since the incidental unit 10D has a length in the Y direction slightly shorter than the length in the Y direction of the building unit 1 by the thickness of the outer wall panel PL, the beam member on one side is combined with the column member 2 of the building unit 1 The beam members 14A and 15A on the other side are not aligned with the column material 2 on the other side of the building unit 1 and are displaced.

  That is, as shown in FIG. 12 and the like, the beam member 15B on one side is connected to the column member 2 of the building unit 1 and the beam member 15B of the incidental unit 10C by the bolt 22 and the nut 31 at the same center. The lower connecting beam 16 and the lower beam 4 are connected via the connection plate 33, but the column member 2 and the beam members 14A and 15A do not coincide with each other on the other side. For this reason, the upper beam member 15 </ b> A is connected by the bolt nuts 22 and 31 in a state where the centers do not coincide with each other, and the lower beam member 14 </ b> A is connected by the connection plate 33.

  When connecting at the beam portion, as in FIG. 15, the connecting plate 33 is placed on the lower beam 4 of the building unit 1 and the lower beam 16 of the accessory unit 10D, and through holes of both beam members are provided. The bolts 22 are connected to the through holes of the connection plate 33 by the nuts 23. Also in this embodiment, the incidental unit 10D has a flexible structure because the sleeve frames constituting the two side surfaces are rigidly joined in a substantially U shape by the column member 11 and the beam members 14A and 15A, and is connected to the building unit 1 to be connected. It is possible to flexibly absorb displacement and the like. In the incidental unit 10D of this embodiment, a unit building can be configured by aligning the outer wall panel PL with the building unit 1 of the main body. In this embodiment, it is preferable that the lower beam on the eaves side away from the building unit 1 of the accessory unit 10D is fixed to the foundation (not shown) with an anchor bolt.

  FIG. 22 shows an accessory unit 10E as a modification of the accessory unit 10D of FIG. In the incidental unit 10E of this modified example, the lower beams 14C and 14D shown in FIG. 5C are formed of C-shaped steel or channel steel. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted. This accessory unit 10E can provide the same effects as those of the accessory unit 10D.

  Furthermore, the modification of the connection part of the incidental structure of this invention and a building unit is demonstrated with reference to FIGS. 23 to 25, the incidental unit 10F is connected along the long side direction of the building unit 1 as shown in FIG. 19A, and the length of the incidental unit 10F in the long side direction (horizontal direction). The length is set to be shorter than the length of the building unit 1 in the long side direction. Therefore, when the beam member 15A of the incidental unit 10F and the column 2 of the building unit 1 are aligned on one side, they do not match on the other side, and the other beam member 15B of the incidental unit 10F is in the middle of the long side direction of the building unit 1. Will be located.

  In the example shown in FIGS. 23 to 25, a joining attachment 41 is welded to an intermediate portion of the upper beam (ceiling beam) 5 of the building unit 1, and an auxiliary beam 42 is connected to the attachment as a reinforcing member. Although not shown, the attachment 41 is similarly welded to the upper beam on the opposite side of the upper beam 5, and the auxiliary beam 42 is connected between both beams. The attachment 41 is formed from a steel material 41a having a C-shaped or U-shaped cross section, and the upper and lower dimensions of this steel material are cut between both ribs of the upper beam 5, and the opening of the steel material is joined by a steel plate 41b. A through hole for connecting the auxiliary beam 42 is formed on the back surface of the steel material 41a, and two nuts 43 are fixed inside. Furthermore, a connecting plate 42a is welded to both ends of the auxiliary beam 42, and two connecting holes for inserting bolts are formed in this connecting plate.

  The steel plate 41b has three through holes through which bolts connecting the accessory unit 10F are inserted, and three nuts 43 are fixed inside. In this case, it is necessary to weld the nut 43 to the inside of the through-hole, but in the case of a high-strength nut, there is a possibility that it will break by welding. For this reason, the nut can be prevented from breaking when the nut is made into a nut combined body 44 housed in a metal case 44a as shown in FIG. 25 and the metal case 44a is welded.

  In the connection structure configured as described above, the auxiliary beam 42 is connected to the upper beam 5 of the building unit 1 and the upper beam facing the building unit 1 via the attachments 41 and 41 by screwing the bolt 46 into the nut 43. The auxiliary unit 10 </ b> F is connected to the outside of the upper beam 5 of the reinforced portion with a spacer 45 interposed therebetween. That is, the connecting bolt 46 is inserted from the inside of the joint plate of the beam member 15B of the incidental unit 10F positioned outside the upper beam 5, and the spacer 45 is penetrated to be screwed into the nut 43 in the attachment 41 to be fixed.

  In the connection structure of the incidental units configured as described above, an intermediate portion of the beam material (upper beam 5) of the building unit 1 where the beam material of the incidental unit 10F is located can be reinforced, and the incidental unit is in the middle of the beam material. Even if connected to the part, since the building unit 1 is reinforced, it can be stably connected and fixed. Although not shown, it is preferable that the lower beam of the building unit 1 is also reinforced by welding a joint attachment having a similar configuration and connecting a floor beam between the lower beams as an auxiliary beam. is there.

  In another embodiment of the connection structure shown in FIG. 26, the building unit 1 that connects the accessory unit 10 </ b> F is reinforced by auxiliary beams 42 </ b> A and intermediate columns 47 as reinforcement members. The auxiliary beam 42A in this example is similarly formed of C-shaped steel, and the intermediate column 47 is also formed of C-shaped steel. And the attachment 41A for joining for connecting the auxiliary beam 42A is the shape which cut | disconnected the C-shaped steel of the same direction as the upper beam 5, and is welded to the upper beam 5 similarly to the above-mentioned attachment 41. The auxiliary beam 42A is connected between the upper beams 5 and 5 by bolts 46 and nuts 43 via attachments 41A and 41A. Furthermore, the intermediate pillar 47 is connected between the upper beam 5 and the lower beam (not shown), and the building unit 1 is reinforced. In the building unit 1 of this embodiment, the upper beam 5 and the lower beam of the portion connecting the accessory unit 10F having a short length are reinforced by the auxiliary beam 42A and the intermediate column 47. It has the feature of being stable.

  Furthermore, the incidental structure of the embodiment shown in FIG. 27 is an incidental unit 10G, which is connected and fixed to an elevation surface (YZ plane) on the long side of the building unit 1 on the first floor. The incidental unit 10G is configured with a length shorter than the length of the long side of the building unit 1 and does not coincide with the pillars 2 and 2 at both ends constituting the long side of the building unit 1, and the upper beam The beam members 14A, 14B, 15A, 15B of the incidental unit are combined and fixed to the intermediate columns 48, 48 connected between the lower beams. In this unit building H, by connecting the incidental unit 10G having a length shorter than the long side in the Y direction of the building unit 1, it is possible to change the appearance of the unit building and achieve diversification of the appearance. it can.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed. For example, although an example of a bolt and nut is shown as a fixture for fixing a column material and a beam material, or a beam material and a beam material, it is needless to say that other fixtures such as rivets may be used.

  Although the example which used four or five building units as a unit building was shown, the thing using two or three building units may be used, and many building units can be used. Of course, a plurality of incidental units may be connected and fixed to a unit building on the third floor or higher. Furthermore, although the example of B-shaped steel was demonstrated as a column material which comprises an incidental unit, you may use steel materials of other shapes, such as H-shaped steel.

  As an application example of the present invention, the appearance of a unit building constructed by assembling a building unit using this accessory unit can be changed to a heavy design, and by connecting and fixing the accessory unit, The internal space can be expanded, and a flexible configuration that can easily follow the building unit of the main body can be obtained.

  1: Building unit, 2: Column material, 3, 4: Lower beam, 5, 6: Upper beam, 9: Reinforcement plate, 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G: Additional unit (accompanying structure Material), 11: pillar material, 12: lower beam (beam material in Y direction), 13: upper beam (beam material in Y direction), 12a, 13a, 16a, 17a: end plate (end member), 14A, 14B , 14C, 14D, 15A, 15B: X-direction beam material, 14e: rising portion, 14f: horizontal protruding portion, 16: lower connection beam, 17: upper connection beam, 18: sleeve frame (side surface), 19: floor material 20, 21: reinforcing plate, 22: bolt (fixing tool), 23: nut (fixing tool), 25, 27: end plate, 26, 28: joint plate, 30: through hole, 31: nut, 32: guide Pin 33: Connecting plate 35 Auxiliary pillar (temporary posts) 42, 42A: Auxiliary Beam (reinforcing member), 47: intermediate pillar (reinforcing member), H: Unit building

Claims (13)

A small incidental structure connected to one elevation of a rectangular parallelepiped building unit constituting a unit building and expanding the internal space of the building unit,
The incidental structure includes two pillars parallel to the Z-axis indicating the vertical direction and two pillars extending in the Y-axis direction orthogonal to the Z-axis and connecting the upper and lower ends of the two pillars. 4 beams extending in the X-axis direction perpendicular to the Z-axis and the Y-axis from the intersection of the two column members and the two beam members, and the four beams A lower connecting beam that connects the free ends of the two lower beams among the members, and an upper connecting beam that connects the free ends of the upper two beams of the four beams And
The lower connecting beam and the upper connecting beam are opposed to and fixed to a member constituting the one elevation surface of the building unit,
The two beam members extending in the Y direction are fixed to the two column members by a fixture such as a bolt and nut, and the four beam members extending in the X direction are the two column members. The accessory structure is characterized in that the lower connecting beam and the upper connecting beam are fixed to the four beam members by a fixture such as a bolt and nut.   The two columnar members are formed of a rod-shaped steel having a substantially square cross-sectional shape, and at least one of upper and lower ends thereof is formed with an opening and a flat connecting portion continuous to the opening, The incidental structure according to claim 1, wherein at least one of the two beam members extending in the Y direction via a connecting portion is fixed by the fixture.   The two beam members extending in the Y direction have end members joined to end portions thereof and are connected to the two column members by the fixture. Structure. Side face-shaped sleeve frames are formed on two sides with the four beam members extending in the X direction and the two column members,
The incidental structure according to any one of claims 1 to 3, wherein the sleeve frame bears only a vertical load.   The four beam members extending in the X direction are formed of channel steel or C-shaped steel, and two of the four beam members positioned below rise from the end of the upper flange. The incidental structure according to any one of claims 1 to 4, further comprising a floor material mounting portion having a rising portion and a horizontal protruding portion that protrudes horizontally from an upper end of the rising portion.   The auxiliary structure according to any one of claims 1 to 5, wherein the upper connecting beam is formed of L-shaped steel.   The incidental structure according to any one of claims 1 to 6, wherein a horizontal reinforcing plate that closes upper and lower openings of the rod-shaped steel is fixed to the column material.   The incidental structure according to any one of claims 1 to 7, wherein a length along the long side direction of the incidental structure is shorter than a length along the long side direction of the building unit.   The incidental structure according to any one of claims 1 to 8, wherein the two upper and lower beam members extending in the X direction are connected and fixed by a temporary column parallel to the column material.   A unit building, wherein the incidental structure according to any one of claims 1 to 9 is connected and fixed to the building unit.   The unit building according to claim 10, wherein the building unit is a load-bearing structure in which a column member and a beam member are all rigidly joined.   The unit building according to claim 10 or 11, wherein the incidental structure is connected and fixed to an outer surface of the building unit.   The incidental structure connected to one elevation surface of the building unit is formed to be shorter in the horizontal direction than the one elevation surface, and the building unit has a beam member facing the column material of the incidental structure. The unit building according to any one of claims 10 to 12, wherein the unit building is reinforced by a reinforcing member.

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