JP5953016B2 - Attached structures and unit buildings - Google Patents

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, in this type of unit building, there is an overhang unit that is joined to the side part of the lower floor unit installed on the foundation or joined to the side part of the upper floor unit mounted on the upper part of the lower floor unit. The overhang unit is composed of a frame structure in which columns, floor beams and ceiling beams are joined. And this overhang unit is joined to the side part of the lower floor unit installed on the foundation, and the unit building is constituted (for example, refer to patent documents 1).

JP-A-4-360933

  An overhang unit used in a unit building configured as described above is a frame structure in which a column, a floor beam, and a ceiling beam are joined as described above, and the column, floor beam, and ceiling, which are structural materials, are used. Since the beam is joined by welding, etc., the same manufacturing process as the standard building unit is required, which increases costs and the strength of the rigid joint surface is high. There is a problem that it is difficult to follow. In addition, in this type of incidental structure, there are those in which the cross-sectional shape of the four column members is constituted by a substantially U-shaped grooved steel or C-shaped steel. When building in a fire prevention area, it is necessary to apply a fireproof coating to the pillar facing the outer wall.

  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. Moreover, it is providing the incidental structure of a flexible structure which is easy to follow the building unit connected and is flexible. Furthermore, it can also be divided and transported, and it is possible to provide an incidental structure that can reduce transportation costs by assembling at a construction site. It is another object of the present invention to provide a unit building that allows a heavy appearance by connecting the incidental structures to change the appearance. And even if it builds in a fire prevention area using this incidental structure, it is providing the incidental structure which does not need to carry out a fireproof covering to the pillar material which faces an outer wall.

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 auxiliary structure includes four column members, four lower beams that connect the lower ends of the column members in the horizontal direction, and four links that connect the upper ends of the column members in the horizontal direction. A rectangular parallelepiped shape is formed from an upper beam, and is connected and fixed to a member constituting the one elevation surface of the building unit. The auxiliary structure has two columns on two opposite sides of the rectangular parallelepiped. This is a rigid joint surface in which the material and the upper and lower beams are rigidly joined. The other two opposite side surfaces are the two column members, and the upper and lower beams are connected via a joint member by a fixture such as a bolt and nut. Of the four pillars, the two pillars on the building unit side are connected The cross-sectional shape is made of groove-shaped steel or C-shaped steel having a substantially U-shaped cross section, and the other two pillars on the side away from the building unit are made of a round-shaped steel having a substantially cross-sectional shape, the joint The member connects the two column members, the upper beam and the lower beam, and is fixed so as to close a part of the opening of the grooved steel or C-shaped steel, and is attached to the back side of the joint member. Is characterized in that a fastening space for a fixture such as a bolt and nut is formed.

  The incidental structure of the present invention configured as described above can be expanded to the internal space of the basic building unit by being connected to one elevation surface of the rectangular parallelepiped building unit constituting the unit building. Moreover, the internal space of a building unit can be easily expanded only by connecting and fixing two pillar materials of an incidental structure to two pillar materials of a building unit. Furthermore, by connecting an incidental structure to the unit building, the appearance of the unit building can be changed, and a heavy and uneven appearance can be obtained. In addition, because two of the four pillars are made of closed-section steel with a closed cross-sectional shape with a substantially cross-sectional shape, the two pillars made of round-shaped steel are placed outside. By doing so, even when building a unit building in which the incidental structure and the building unit are combined in a fire prevention area, the fireproof coating can be omitted, and the construction can be simplified.

As another aspect of the incidental structure according to the present invention, two opposing side faces of a rectangular parallelepiped composed of two column members adjacent to the incidental structure, an upper beam, and a lower beam are an upper beam or a lower beam. One of which is rigidly joined to two pillars, and the other is connected and fixed to two pillars via a joint member by a fixture such as a bolt and nut, and the building unit of the four pillars The two pillars on the side are made of channel steel or C-shaped steel having a substantially U-shaped cross-section, and the other two pillars on the side away from the building unit are substantially in a cross-section. The joint member connects the two column members, the upper beam and the lower beam, and closes a part of the opening of the grooved steel or C-shaped steel. It is fixed, on the back side of the joint member, especially that engagement space fasteners such as bolts and nuts are formed It is set to. According to the incidental structure configured as described above, in addition to the above-described operational effects, the structure has a lower strength and a flexible structure compared to the side surface where the four corners are rigid joints. It is easy to follow the unit and can absorb flexibly even when a displacement such as an earthquake is applied.

Further, as another aspect of the incidental structure according to the present invention, the four lower beams and the four upper beams constituting the incidental structure include a fixture such as a bolt nut on the two column members. Are connected via a joint member, and are connected to the other two pillars by a fixture such as a bolt and nut, and the two pillars on the building unit side of the four pillars are cross-sectioned. The other two pillars on the side away from the building unit are made of a rod-shaped steel having a substantially square-shaped cross section, and the joint member is made of a substantially U-shaped channel steel or C-shaped steel. Is to connect the two column members to the upper beam and the lower beam, and is fixed so as to close a part of the opening of the grooved steel or C-shaped steel, and on the back side of the joint member It is characterized in that the fastening space fasteners such as bolts and nuts are formed. According to the incidental structure configured as described above, in addition to the above-described effects, the four lower beams and the four upper beams are connected to the four column members by a fixture such as a bolt nut. Therefore, it is configured flexibly, easily follows the connected building units, and can be absorbed flexibly even when a displacement such as an earthquake is applied. That is, it is integrated with the building unit when connected to the building unit, and wind pressure and seismic force (external force) acting on the part are transmitted to the building unit of the main body, and the incidental structure itself does not oppose the external force. Yes. For this reason, it can suppress that an excessive force is applied to the junction part etc. of a building unit and an incidental structure.

Before the two vertical surfaces adjacent at least one end portion of the upper and lower kilo-shaped steel is formed flat connecting portion continuous to the opening and the opening is connected to the other two pillar It is preferable that at least one of the upper beam and the lower beam is connected to the connecting portion through a fixture such as a bolt and nut through the opening. According to this configuration, when the incidental structures are stacked up and down through the openings of the column members, the column members can be easily connected to each other. Further, 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 preferable specific aspect of the incidental structure according to the present invention, the incidental structure is characterized in that the upper beam on the side connected to the building unit is L-shaped steel. According to this configuration, it is possible to further reduce the weight and reduce the cost by simplifying the configuration of the upper beam on the side of the building unit that has relatively little influence on the strength.

The accessory structures, among upper beams and four lower beams of the four, lower beam the supplementary structure to attach the direction of projecting from the mounting surface of the two upper beams and two of the building units and Two sleeve frames are formed by two pillar members connecting both ends of the two upper beams and the two lower beams . According to this configuration, horizontal forces such as earthquakes and wind forces applied to the incidental structure can be applied to the building unit and can be borne by the building unit, which is a load-bearing structure. The indoor space can be easily expanded by connecting this incidental structure to a building unit.

  The connection by the fixture is characterized in that it is detachably connected to the column member by a bolt and nut via a joint member. According to this configuration, the upper beam or the lower beam to be joined by bolts and nuts is connected and fixed to the two column members via the joint members, so that the bolts and nuts can be joined easily, and the production of the incidental structure is facilitated. .

  The column member is fixed with a horizontal reinforcing plate that closes the upper and lower openings of the channel steel or C-shaped steel, and a horizontal reinforcing plate that supports the joint member is fixed together with the reinforcing plate. Preferably it is. According to this configuration, the openings at the upper and lower ends of the column member are closed with the horizontal reinforcing plate, and the joint member is fixed with the reinforcing plate fixed at a distance corresponding to the height of the joint member together with the reinforcing plate. The strength of the upper and lower ends of the column material can be improved.

  It is preferable that a triangular reinforcing plate for reinforcing the ribs of the grooved steel or the C-shaped steel is fixed to the column material. According to this configuration, the ribs of channel steel or C-shaped steel can be reinforced with the triangular reinforcing plate.

  The joint member has a flat plate shape, and an upper and lower wide portion and a central narrow portion are connected by an inclined side, and a through hole into which a bolt for connecting the lower beam and the upper beam is inserted is formed in the wide portion. Preferably, the joint member includes a flat portion that closes the longitudinal openings of the upper beam and the lower beam, and upper and lower ends that are bent at the upper and lower ends of the flat portion and fixed to the upper and lower flanges of the beam member. A bent portion and a central bent portion that is bent and fixed to a web of a beam member by bending the central portion of the flat portion, and a bolt for connecting the lower beam and the upper beam is inserted into the flat portion. It is preferable that a through hole is formed.

  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.

  It is preferable that the incidental structure includes a horizontal brace material that connects at least upper portions of the four column members. According to this structure, the intensity | strength of the surface which comprises the ceiling surface of an incidental structure can be improved.

  In addition, 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. It is preferable that the building unit is a load bearing structure in which a column member and a beam member are all 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. By connecting an incidental structure 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 can have a simple configuration, and can be connected and fixed to a building unit constituting the unit building, so that 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. And when constructing a unit building in a fire prevention district, construction of fireproof coating can be omitted.

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 of the building unit of FIGS. 1 and 2 show a joint between a reinforcing plate and a beam member, in which (a) is a horizontal sectional view of the main part, (b) is a front view of the main part, and (c) is a d0-d0 line of (b). FIG. (A) is a perspective view of one Embodiment of the incidental unit connected and fixed to the building unit of FIG. 1, (b) is a perspective view which shows the example of a change of an incidental unit. The perspective view which shows the decomposition | disassembly state of the incidental unit of FIG. FIGS. 1 and 5 show a state in which the incidental unit shown in FIG. 1 is connected and fixed to a building unit, (a) is a side view of a main part where the incidental unit is connected to a building unit on the second floor, and (b) is a building unit on the first floor. The principal part side view which connected the incidental unit to. (A) is a principal part perspective view of the state which decomposed | disassembled the A section of FIG. 5, (b), (c) is a perspective view which shows the modification of the joint plate of (a). 5A is a perspective view of a main part in a state where part B of FIG. 5 is disassembled, FIG. 5B is a perspective view of a main part showing a modification of the connecting part of FIG. 5A, and FIG. Perspective view. (A) is sectional drawing which follows the d1-d1 line of FIG. 9, (b) is d2-d2 sectional view taken on the line of FIG. The d3-d3 line arrow directional view of FIG. D4-d4 sectional view taken on the line of FIG. D5-d5 sectional view taken on the line of FIG. 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 short side direction of the second floor of the unit building The main part perspective view which connected one incidental unit, (d) is the principal part perspective view which connected two auxiliary units up and down in the short side direction of the 1st floor of a unit building, and the 2nd floor, (e) is a unit building's perspective view The main part perspective view which connected one incidental unit to the long side direction of the 1st floor, (f) is the principal part perspective view which connected one auxiliary unit to the long side direction of the 2nd floor of a unit building, (g) is ( f) Perspective view of the main part connected with an accessory unit shorter than the accessory unit of f) . (A), (b) is explanatory drawing which shows transmission of the vertical load and horizontal load of a unit building corresponding to FIG.14 (b), (c), (d) is the unit building corresponding to FIG.14 (d). Explanatory drawing which shows transmission of a vertical load and a horizontal load, (e), (f) is explanatory drawing which shows transmission of the vertical load and horizontal load of a unit building equivalent to FIG.14 (c). Explanatory drawing which connects an incidental structure to a unit building and bears an external force with the horizontal surface of a floor or a ceiling when external force acts on a unit building. The state which connected the incidental unit which concerns on this invention to the unit building is shown, (a) is the principal part which overlapped and connected the incidental unit on the 1st and 2nd floor in the long side direction of the unit building which made two building units into two layers. A perspective view, (b) is a perspective view of a main part in which one auxiliary unit is connected in the long side direction of the first floor of a unit building, and a balcony is installed thereon, and (c) is a two-layer structure with two building units. In addition, a perspective view of the main part in which one auxiliary unit is connected in the short side direction of the first floor of the unit building in which the building units are arranged on the first floor, (d) is the first floor of the unit building having two building units in two layers. The main part perspective view which connected the incidental unit for short sides to the long side direction of a building unit, (e) is continuous in the short side direction of two building units on the first floor of the unit building which made two building units into two layers. Connect the accessory units to Partial perspective. The state which connected the other incidental unit which concerns on this invention to the unit building is shown, (a) The principal part perspective view which connected the incidental unit to the short side direction of one building unit, (b) is d6 part of (a) The arrow view seen from d7-d7 direction of (b), (c) is the arrow view seen from d8-d8 direction of (b). The state which connected the other incidental unit which concerns on this invention to the unit building is shown, (a) is the principal part perspective view which connected the short incidental unit along the long side direction of the building unit of the first floor, (b) is The arrow view seen from d9-d9 direction of (a), (c) is the arrow view seen from d10-d10 direction of (b). The disassembled perspective view which shows the principal part structure of other embodiment of an incidental structure. The disassembled perspective view which shows the principal part structure of other embodiment of an incidental structure. (A) is a perspective view of the state which decomposed | disassembled the principal part which shows the connection part of the column material of an incidental structure of FIG. 20, an upper beam, and a lower beam, (b) is the state of the state which decomposed | disassembled the principal part of the example of a change. Perspective view. (A) is the d11-d11 sectional view taken on the line of FIG. 22, (b) is the d12-d12 sectional view taken on the line. The principal part perspective view which shows the modification of the connection structure of a column material and a beam material. The principal part perspective view which shows other embodiment of an incidental structure. The principal part perspective view which shows the modification of the connection structure of an incidental structure and a building unit. The top view which made a part of FIG. 25 a 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 other embodiment of an incidental structure is shown, (a) is a perspective view which shows the state attached to the 2nd floor part of the unit building which accumulated two building units, (b) is a connection of a building unit and an incidental structure The principal part disassembled perspective view which shows a part. 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 which connects the incidental unit as an incidental structure of this embodiment is demonstrated in detail. 1-4, 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 made of rectangular columns (b-shaped steel). 2 ..., lower beams (floor beams) 3, 3 in the long side direction connecting the lower ends of the column members in the horizontal direction, lower beams (floor beams) 4, 4 in the short side direction, and four columns It is 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 that connect the upper ends of the materials 2, 2. .

  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-s4 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.

  The incidental unit 10 connected and fixed to the building unit 1 has a small rectangular parallelepiped shape, and is provided on one side of the building unit 1 having a rectangular parallelepiped shape having six surfaces (YZ plane). It has the same rectangular side surface as the short side surface, and the length along the long side direction of the building unit 1 is set to be 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.

  The accessory unit 10 has a thin rectangular parallelepiped shape as shown in FIGS. 5 to 7, and the four column members 11 </ b> A, 11 </ b> A, 11 </ b> B, and 11 </ b> B that are parallel to each other and the lower ends of these column members are arranged in the X direction. Two lower beams 12, 12 connected to each other, two lower beams 13, 13 connected in the Y direction, two upper beams 14, 14 connecting the upper ends of the column members in the X direction, and Y It consists of upper beams 15 and 15 connected in the direction. Of the four pillars, the two pillars 11A, 11A on the building unit 1 side are formed from a grooved steel or C-shaped steel having an open section with a substantially U-shaped cross-section, and are separated from the building unit 1 The column members 11B and 11B on the eaves-end side are formed of a closed section B-shaped steel having a substantially R-shaped section. Further, the lower beams 12 and 13 and the upper beams 14 and 15 are formed of grooved steel or C-shaped steel having an open cross section with a substantially U-shaped cross section. As shown in FIG. 5B, the upper beam 15A facing the building unit 1 may be formed with an angle having an L-shaped cross section and connected with a bolt nut or the like. By forming the upper beam with an angle, the weight can be further reduced.

  In the present embodiment, the side unit rectangle of the building unit 1 in the YZ direction and the side unit rectangle of the auxiliary unit 10 in the YZ direction have the same shape. 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 no protrusion or stepped portion is formed. It will expand the internal space.

  The accessory unit 10 is a sleeve frame formed by upper beams 14 and 14 and lower beams 12 and 12 and four column members 11A and 11B extending in a direction protruding from the mounting surface to which the accessory unit 10 of the building unit 1 is attached, that is, in the X direction. Two surfaces 16 and 16 are formed. The two sleeve frames 16, 16 are formed of opposed parallel surfaces and are synonymous with side surfaces 16, 16 described later. In addition, a floor construction surface is formed as a horizontal construction surface by the four lower beams 12, 12, 13, and 13, and a ceiling construction surface is formed as a horizontal construction surface by the four upper beams 14, 14, 15, and 15. . Although the floor construction surface is not shown in detail, as shown in FIG. 6, it is composed of lower beams 13 and 13 and a plurality of floor joists connecting them. Further, the ceiling construction surface is composed of upper beams 15 and 15 and a plurality of ceiling joists connecting them as shown in FIG. The ceiling construction surface may be composed of four upper beams 14, 14, 15, 15 and horizontal brace members 17, 17 as shown in FIG.

  Two of the four pillars constituting the accessory unit 10 are formed of channel steel or C-shaped steel having a substantially U-shaped cross section, and the other two pillars are The cross-sectional shape is formed from B-shaped steel having a substantially B-shape, and the four column members of the building unit 1 are different from the column material formed from a cross-section (B) -shaped square column steel material. The cost of the unit 10 can be reduced. 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.

  Of the members constituting the accessory unit 10, the upper beams 14, 14 along the X direction are rigidly joined to the upper ends of the column members 11A, 11B by welding or the like, and the lower beams 12, 12 are welded to the lower ends of the column members 11A, 11B. The sleeve frames (side surfaces in the XZ direction) 16 and 16 are formed by the upper and lower beam members and the two column members. The sleeve frames 16 and 16 on the two sides are connected to each other by two lower beams 13 and 13 in the Y direction and two upper beams 15 and 15 using a fixture such as a bolt and nut. The unit 10 is used. For this reason, the two side surfaces of the accessory unit 10 in the YZ direction are pin joint surfaces connected by a fixture. In the present embodiment, brace members 17 and 17 are fixed to the rigid joint surfaces 16 and 16 in the XZ direction and further reinforced. Further, horizontal brace members 18 and 18 for connecting the four column members 11A, 11B... Are fixed to the upper portion of the incidental unit 10 in a cross state.

  For example, as shown in FIG. 7A, the incidental unit 10 is overlaid by being attached and fixed to the second floor building unit 1 on the first floor building unit 1A. It is connected and fixed to the state. In this case, you may comprise so that the auxiliary pillar h may be provided under the incidental unit 10. FIG. In FIG. 7B, the building unit 1 is installed and fixed above the foundation K, and the incidental unit 10 is connected and fixed to the building unit 1. In any case, the incidental unit 10 is connected and fixed to a pillar material or a beam material constituting the building unit 1 with bolts and nuts or the like as will be described later.

  Here, the detail of the incidental unit 10 is demonstrated based on FIGS. The lower beams 13 and 13 and the upper beams 15 and 15 constituting the auxiliary unit 10 are bolted to the column members 11A and 11B as described above. That is, the two reinforcing plates 20 and 20 are formed so as to close the opening of the C-shaped steel at the lower end of the grooved steel or C-shaped steel having a substantially U-shaped cross section constituting the column member 11A on the building unit 1 side. Are fixed horizontally by welding or the like, and the interval between the two reinforcing plates coincides with the height of the lower beam 13. In addition, two reinforcing plates 21 and 21 are horizontally fixed to the upper end of the column member 11A made of C-shaped steel having a U-shaped cross section by welding or the like so as to close the opening of the C-shaped steel. In addition, the interval between the two reinforcing plates matches the height of the upper beam 15.

  And the joint plates 22, 22,... Are fixed vertically by welding or the like so as to connect the two reinforcing plates 20, 20, 21, 21, and the outer end face of the C-shaped steel. This joint plate connects the column and the upper and lower beams, and is fixed so as to block a part of the opening of the channel steel or C-shaped steel. The upper and lower wide portions and the central narrow portion are Are formed on the back side of the joint plate by the narrow portion. The through holes 24, 24... Are inserted into the wide portion and the bolts 23 for connecting the lower beam 13 and the upper beam 15 are inserted. The bolts and nuts can be inserted as fixtures in the C-shaped steel of the column member 11A. As shown in FIGS. 8B and 8C, the joint plate 22 has a triangular portion at a portion welded to the reinforcing plates 20 and 20, and a joint plate 22A constituted by a thin plate portion connecting the upper and lower triangles, The shape of the joint plate 22B divided into two triangles may be used.

  The reinforcing plates 20 and 21 and the joint plate 22 fixed to the upper and lower ends of the two column members 11A and 11A facing the building unit 1 are used to connect the lower beams 13 and 13 and the upper beams 15 and 15 along the Y direction. A connecting part is configured. End plates 13a and 15a that are in contact with the joint plate 22 are fixed to the lower beams 13 and 13 and the upper beams 15 and 15 so that bolts 23 can be inserted into the through holes 24, 24. Holes 13b and 15b are formed. As described above, the upper beams 15 and 15 and the lower beams 13 and 13 are joined by the bolt 23 and the nut via the joint plate 22.

  On the other hand, as shown in FIG. 9A, the eaves-side column member 11B that is not on the building unit 1 side is formed of a B-shaped steel having a cross-sectional shape, and is formed at upper and lower ends of the B-shaped steel. The reinforcing plates 20 and 21 are fixed to each other. A through-hole is formed in the upper and lower ends of the column member 11B as a connecting portion for connecting the lower beam 13 and the upper beam 15 adjacent to the reinforcing plates 20 and 21 to the surface of the column member facing the beam member. 11c and a nut 11d fixed inside by welding or the like. Further, an end plate 13a is fixed to the lower beam 13 at an end facing the column member 11B, and a through hole 13b is formed at a position corresponding to the through hole of the column member. Similarly, an end plate 15a is fixed to the upper beam 15 to form a through hole 15b. In this way, through holes 11c and nuts 11d are provided in the upper and lower ends of the columnar steel 11B, and the lower beam 13 and the upper beam 15 in the Y direction can be connected and fixed with a fixture such as a bolt and nut. It has become.

  The connecting portion of the pillar material 11B can be changed as shown in FIG. 9B, the reinforcing plates 20 and 21 are fixed to the upper and lower end portions of the column member 11B, and at least one of the upper and lower ends of the column member 11B is adjacent to these reinforcing plates. An opening for connecting the lower beam 13 and the upper beam 15 and a flat connection portion are formed. In the present embodiment, an opening 11e and a flat connecting portion 11f are formed at the lower end, and a through hole 11g is formed in the connecting portion 11f. A flat connecting portion having no opening similar to that in FIG. 9A is formed at the upper end, but an opening and a connecting portion may also be provided at the upper end. . Here, the opening part 11e, the connection part 11f, and the connection hole 11g which connect the lower beam 13 below are demonstrated.

  The opening 11e is formed at a right angle over a surface connecting the lower beam 13 and a surface facing the lower beam 12 adjacent to this surface, and has a width equivalent to the flange of the lower beam 13 at the same height as the lower beam 13. The height of the connecting portion 11f is left, and the flat connecting portion 11f is formed with a through hole 11g. An end plate 13a is fixed to the lower beam 13 by welding or the like so as to face the column member 11B, and a through hole 13b through which two bolts 23 are inserted is formed in the end plate 13a. The through hole 13b formed in the end plate 13a is formed at a position corresponding to the through hole 11g formed in the connecting portion 11f of the column member 11B. Then, the end plate 13a is brought into contact with the flat connecting portion 11f, the bolt 23 is inserted from the opening portion 11e, passed through the through hole 11g of the column 11B and the through hole 13b of the end plate, and the protruding end portion of the bolt 23 The lower beam 13 can be connected to the column 11B by screwing a nut into the column 11B.

  In addition, you may comprise the connection part of the lower beam and the lower end part of column material 11B like the lower beam 13A shown by FIG.9 (c). The end plate 13c fixed to the lower beam 13A includes a flat portion that closes the longitudinal opening of the upper beam and the lower beam, and upper and lower ends that are bent at the upper and lower ends of the flat portion and fixed to the upper and lower flanges of the beam material. A through hole into which a bolt for connecting the lower beam and the upper beam is inserted into the flat portion, the bent portion having a central bent portion that is bent and fixed to the web of the beam material. Is formed. Then, the bolt 23 inserted from the opening 11e is inserted into the through hole 11g at the lower end of the pillar 11B and the through hole 13b of the end plate 13c, and a nut is screwed into the protruding end of the bolt 23, thereby making the pillar 11B. And the lower beam 13A are connected by bolts and nuts. This end plate 13c is fixed to the lower beam 13A by the upper and lower bent portions and the central bent portion, and since the flat portion can be elastically deformed, the lower end of the column member 13B and the lower beam 13 can be flexibly connected. The incidental unit 10 can be configured to be flexible.

  Although the upper end portion of the column member 11B shown in FIGS. 9B and 9C is not shown, a flat connection portion without an opening portion is formed as in FIG. A hole 11c and a nut 11d are provided. A through hole 11c is formed on the surface of the column member 11B facing the upper beam 15 on the top, and a nut 11d is fixed to the inner surface of the through hole 11c by welding or the like. The nut 11d is welded before welding the reinforcing plate 21 that closes the upper opening of the B-shaped steel, and the upper opening is closed with the reinforcing plate 21 after the nut is welded. On the other hand, an end plate 15a is fixed to the end of the upper beam 15 by welding or the like, and a through hole 15b through which two bolts are inserted corresponding to the two through holes 11c is formed. As described above, the upper beam 15 can be connected to the upper portion of the column member 11B by screwing the nut 11d in the through hole 11c of the column member through the bolt into the through hole of the end plate 15a of the upper beam 15. .

  In the incidental unit 10 configured in this way, the two pillar members 11B that constitute the elevation surface on the eaves side opposite to the side connected to the building unit 1 are the B-shaped steel having a closed cross section. Even when constructed in fireproof, the fireproof coating can be omitted. Further, by forming a connecting portion 11f having an opening 11e and a through hole 11g at the lower end of the columnar steel 11B, anchor bolts (not shown) and a reinforcing plate are used to fix the accessory unit 10 on the foundation. 20 can be connected through the opening 11e. Furthermore, also when connecting the incidental unit on the second floor on the incidental unit on the first floor, the pillar members can be connected through the opening 11e at the lower end of the pillar member 11B. By forming the opening in only one of the upper and lower ends of the column member 11B, it is possible to reduce the strength reduction and prevent deformation such as buckling of the column member.

  Further, as shown in FIGS. 11 and 12, triangular reinforcing plates 25, 25... For reinforcing the ribs inside the C-shaped steel are welded between the reinforcing plates 21 and 21 at the upper part of the column member 11A. And so on. .. Are connected to the ribs of the column member 11A reinforced by the reinforcing plate by welding or the like, and the connecting plate is fixed to the connecting plate and an equivalent position of the column member 11B located diagonally. The horizontal brace members 18, 18 are connected to each other. The horizontal brace members 18 and 18 may be configured such that the length and tension can be adjusted by interposing a turnbuckle at an intermediate position.

  In the column members 2 and 2 of the building unit 1, two attachment holes 30 are provided in each of the upper and lower ends facing the incidental unit 10 of the column members 2 and 2 as a configuration for connecting the incidental unit 10 to the building unit 1. , 30 are formed, and nuts 32, 32 to which bolts 31, 31 for connecting and fixing the accessory unit 10 to the building unit 1 are screwed are fixed by welding or the like. A guide pin 33 is fixed via a nut or the like in the middle of the mounting hole in which the two nuts are welded. The guide pin 33 is for positioning so as to facilitate bolting when the accessory unit 10 is connected and fixed to the building unit 1, and the tip of the guide pin 33 is tapered.

  In the incidental unit 10, three through holes 27 are formed on the surfaces of the pillar members 11 </ b> A and 11 </ b> A facing the building unit 1 corresponding to the mounting holes 30 of the building unit 1 and the guide pins 33. Bolts 31 are inserted into the upper and lower two through holes, and a guide pin 33 is inserted into the central through hole. A spacer 35 is interposed between the column member 2 of the building unit 1 and the column member 11A of the incidental unit 10. The spacer 35 is formed with a through hole into which the bolts 31 and 31 and the guide pin 33 can be inserted.

  The accessory unit 10 formed in this way is a sleeve frame 16, 16 in which only two side surfaces (XZ plane) are rigidly joined to the building unit 1 in which all the column members and beam members are rigidly joined. Since the rigid joint surfaces 16 and 16 are connected by the four beam members 13, 13, 15 and 15 with the bolts 23, the weights of the column members and the beam members constituting the incidental unit 10 are reduced. The cost can be reduced as well as the cost. In addition, the accessory unit 10 is transported by being divided into two rigid joint surfaces 16 and 16 and four beam members 13, 13, 15, and 15, which are constituted by column members 11 A and 11 B, a lower beam 12 and an upper beam 14. The construction is such that beam materials are fixed and assembled locally. In the illustrated embodiment, as the two rigidly joined surfaces of the rectangular parallelepiped constituting the accessory unit 10, two surfaces in the XZ direction are used, but two surfaces in the YZ direction are used as the rigidly joined surfaces. Of course, it is good.

  Through holes 2A are formed in the upper and lower end surfaces of the column members 2, 2... Constituting the building unit 1, and nuts are fixed to the inner surfaces of the through holes by welding or the like. The upper through holes of the four column members of the building unit 1 are fitted with eyebolts (not shown) for lifting the building unit 1 when transporting the building unit 1 or installing it on the foundation. Further, through holes 21a are similarly formed in the reinforcing plates 20 and 21 fixed to the upper and lower end surfaces of the column members 11A, 11A... Constituting the auxiliary unit 10, and a nut 28 (see FIG. 11) is formed on the inner surface of the through holes. ) Is fixed by welding or the like. As shown in FIG. 8, a balcony column B constructed on the incidental unit 10 can be connected and fixed to the upper end of the column 11 </ b> A using the nut 28.

  The assembly of the accessory unit 10 of the present embodiment configured as described above will be described below. As described above, the accessory unit 10 is transported by being divided into two rigid joint surfaces (sleeve frames) 16 and 16 and four beam members (lower beams 13 and 13 and upper beams 15 and 15). Assembled. In this assembly, the through holes 24, 24... Of the joint plates 22, 22... Fixed to the upper and lower ends of the column members 11A, 11A constituting the rigid joint surface, the end plates 13a of the lower beam 13 and the upper beam 15,. The bolts 23 are inserted by aligning the through holes 13b and 15b of 15a, and the nuts are screwed and fixed. Bolts and nuts can be inserted into the column member 11 </ b> A through the narrow portion of the joint plate 22. Thereby, the rigid joint surfaces 16 and 16 are joined by the four beam members, and the rectangular parallelepiped auxiliary unit 10 is completed.

  The accessory unit 10 configured in this way is small and is divided into two face members (sleeve frames 16 and 16) and four beam members (lower beams 13 and 13 and upper beams 15 and 15). Easy to transport. In addition, since the incidental unit 10 does not require strength, the column members 11A and 11B and the beam members 12, 13, 14, and 15 can be small and light, and the weight of the incidental unit 10 can be reduced, thereby reducing the cost. . Further, the rigid joint surfaces (sleeve frames) 16 and 16 can be manufactured by welding, and the sleeve frames 16 and 16 can be connected by four beam members to form a rectangular parallelepiped accessory unit, which is large like a building unit. A large-scale manufacturing facility is not required and can be easily manufactured.

  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 assembled as described above is opposed to the mounting surface of the building unit 1, the spacer 35 is sandwiched between the column members 2, 2 and the column members 11 A, 11 A, and both units are brought into close contact with each other. Let By inserting guide pins 33, 33 protruding from the upper and lower ends of the column members 2, 2 of the building unit 1 into the through holes 27, the mounting holes 30, 30 of the column members 11 A, 11 A of the building unit 1, and the incidental unit 10 The through holes 27, 27 are in close contact so that they communicate with each other. Then, the bolt 31 is inserted from the through hole 27 side of the column member 11 </ b> A, screwed into the nut 32 fixed inside the column member 2, and tightened. The bolt 31 can be easily inserted through the space beside the joint plate 22.

  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. 14A, 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 10A is connected in the short side direction (Y direction). May be extended. The accessory unit 10A is basically the same configuration as the accessory unit 10, and the lengths of the four beam members connecting the two side surfaces (sleeve frames) 16a and 16a (YZ plane) are different. Only.

  In FIG. 14 (b), 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, it is desirable that a base portion (not shown) on which the building unit 1 is placed is also formed in the incidental unit portion. Moreover, in the incidental unit by 2nd or 3rd invention mentioned later, the incidental unit can follow the building unit 1 and can absorb a load flexibly by making the sleeve frame which comprises a side surface into a flexible structure.

  In FIG. 14C, similarly, four building units 1 are combined to form a unit building H, and the incidental unit 10 is connected and fixed to the unit on the right of the second floor of the unit building H. Also in this example, the appearance of the unit building H can be changed, and the incidental unit 10 can be protruded from the building unit 1 on the second floor in an overhanged state so that the internal space can be expanded and used effectively. The accessory unit 10 shown in this example is mounted on the second floor portion, and the accessory unit preferably has an auxiliary column h as shown in FIG.

  In FIG. 14 (d), four building units 1 are combined to form a unit building H, and two incidental units 10 are vertically stacked and connected and fixed to the left and right floor units of this unit building H. Yes. Also in this example, the appearance of the unit building H can be changed, and the internal space of the building units 1 and 1 on the first and second floors can be expanded and used effectively. In particular, the staircase that penetrates the upper and lower floors Can be used as The incidental unit 10 shown in this example can expand the internal space of the building units 1 and 1 by the incidental units 10 and 10 continuing vertically. In addition, the incidental unit according to the second or third invention described later can follow the building unit and have a flexible configuration.

  In FIG.14 (e), the unit building H is comprised by combining the four building units 1, and it is for the long side directions connected along the long side direction (X direction) of the building unit 1 which comprises this unit building H Is attached 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 accessory unit 10A shown in this example is mounted on the first floor portion, and the accessory unit is preferably installed on the foundation. Moreover, in the incidental unit by the below-mentioned 2nd or 3rd invention, it can follow a building unit flexibly.

  In FIG.14 (f), the unit building H is comprised by combining the four building units 1, and the long side direction connected along the long side direction (X direction) of the building unit 1 which comprises this unit building H Is attached and fixed to the second-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 second floor can be expanded and used effectively. The incidental unit 10A shown in this example is attached to the second floor portion, and the incidental unit may be provided with auxiliary pillars h as shown in FIG. In FIG. 14 (g), an accessory unit 10A 'shorter in the X direction than the accessory unit 10A of FIG. 14 (f) is connected and fixed to the building unit 1 on the second floor.

  In this way, each unit building H shown in FIG. 14 is configured by stacking or juxtaposing a plurality of building units 1, and the incidental unit 10 is connected and fixed to one elevation surface of the building unit on the outer peripheral side. Yes. And in the unit building H, the building unit 1 which is a load bearing structure has sufficient structural strength even if the incidental unit which is a non-bearing structure is connected, and is deformed even if seismic force or wind force acts. It has a structure with a comfortable living environment.

  The accessory units 10 and 10A shown in FIGS. 14 (a), 14 (b), 14 (d), and 14 (e) have lower and upper beams that form a sleeve frame shown in FIGS. The accessory units 10E and 10F having the specifications of the sleeve frames 16A and 16B connected to the material by a fixing tool such as a bolt are optimal. Further, the incidental units 10, 10A, 10A ′ shown in FIGS. 14 (c), (f), and (g) are incidental structures protruding from the second floor, and are Chianti installations. As shown in FIG. 9A and the like, it is optimum that the lower beam 13 and the upper beam 15 constituting the sleeve frame 16 are fixed to the column member by welding.

  15 (a) and 15 (b) are connected and fixed to the first floor portion of the two-story unit building in the same manner as the accessory unit shown in FIG. 14 (b) is connected to the building unit. It is a thing. In this example, the vertical load on the ceiling surface of the accessory unit 10 is transmitted to the columnar material of the sleeve frame (corresponding to the side surface 16 in the above embodiment) via the eaves beam and the eaves beam as shown in FIG. The vertical load on the floor is also transmitted to the pillar material of the sleeve frame via the eaves beam and the eaves beam, and finally to the foundation K. Further, the horizontal load on the first floor resulting from the seismic force and wind pressure applied to the accessory unit 10 is transmitted from the ceiling frame (ceiling structure) on the first floor to the building unit 1 and finally transmitted to the foundation K. The Thus, since the vertical load and 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 has a flexible structure although the side surfaces 16 and 16 are rigidly joined, and is configured to easily follow the building unit 1. That is, the sleeve frames 16, 16 bear a vertical load only, and the horizontal load is transmitted to the building unit 1.

  15 (c) and 15 (d) show a two-story unit building similar to the case where the incidental units 10 and 10 connected to the first and second floors shown in FIG. 14 (d) are connected to the building unit 1. The accessory units 10 are connected and fixed to the first and second floor portions. In this example, the vertical load on the ceiling surface of the incidental unit 10 on the first floor and the second floor is, as shown in (c), a sleeve frame through the eaves beam and the eaves beam (corresponding to the side surface 16 in the above embodiment). The vertical load on the floor surface is also transmitted to the columnar material of the sleeve frame via the eaves end beam and the eaves end beam, and finally transmitted to the foundation K. Further, the horizontal load on the second floor due to the seismic force and wind pressure applied to the incidental unit 10 is transmitted from the ceiling frame (ceiling structure) on the second floor to the building unit 1 on the second floor, and the horizontal load on the first floor. The load is transmitted from the ceiling frame (ceiling structure) on the first floor to the building unit 1 on the first floor, and finally transmitted to the foundation 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 of the present embodiment has a flexible structure on the side surfaces 16 and 16, and thus the building unit 1. Easy to follow.

  15 (e) and 15 (f) are attached to the second floor part of the two-story unit building in the same manner as the accessory unit 10 shown in FIG. 14 (c) connected to the second floor building unit 1. The unit 10 is connected and fixed. In this example, the vertical load on the ceiling surface of the incidental unit 10 on the second floor is a pillar material of a sleeve frame (corresponding to the side surface 16 in the above embodiment) via the eaves beam and the eaves beam as shown in (e). The vertical load on the floor surface is also transmitted to the columnar material of the sleeve frame via the eaves beam and the eaves beam, and finally transmitted to the foundation K. Further, the horizontal load on the second floor caused by the seismic force and wind pressure applied to the incidental unit 10 is transmitted from the ceiling frame (ceiling structure) on the second floor to the building unit 1 on the second floor, and further on the building on the first floor. It is transmitted to unit 1 and finally transmitted to foundation 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 of the present embodiment has a flexible structure on the side surfaces 16 and 16, and thus the building unit 1. Easy to follow.

  Here, with reference to FIG. 16, an explanation will be given of the external force acting on the incidental unit being borne by the connected building unit. As shown in FIG. 16A, the external force is connected in parallel to the long side of the first floor. In the incidental unit 10, when a horizontal force such as a wind force or an earthquake acts, this horizontal force is supported by the floor construction surface P1 on the second floor. For this reason, even if the incidental unit 10 is a non-bearing structure, it can counter external forces on the floor construction surface P1 of the building unit 1 that is a bearing structure, and the accompanying unit 10 having a flexible structure is connected to the room. Can be expanded at low cost. That is, the building unit 1 that is a load bearing structure is a structure that has sufficient strength even when the incidental unit 10 that is a non-bearing structure is connected.

  As shown in FIG. 16B, in the incidental unit 10 connected in parallel to the long sides of the first and second floors, when a horizontal force such as wind force or earthquake acts, the horizontal structure P1 on the second floor similarly Support the power. For this reason, even if the incidental units 10 and 10 are non-bearing structures, they can counter external forces on the floor construction surface P1 of the building unit 1 which is a bearing structure, and connect the incidental units 10 having a flexible structure. The interior space of the room can be expanded at a low cost.

  As shown in FIG. 16C, in the incidental unit 10 connected in parallel to the long side of the second floor, when a horizontal force such as wind or earthquake acts, this horizontal force is similarly applied to the floor construction surface P1 of the second floor. To support. For this reason, even if the incidental unit 10 is a non-bearing structure, it can counter external forces on the floor construction surface P1 of the building unit 1 that is a bearing structure, and the accompanying unit 10 having a flexible structure is connected to the room. Can be expanded at low cost.

  Further, as shown in FIG. 16 (d), in a unit building in which three building units are stacked one above the other and the incidental unit 10 is connected and fixed on the first floor, when a horizontal force such as wind or earthquake acts, the floor on the second floor This horizontal force is supported by the construction plane P1 and the floor construction plane P2 on the third floor. In addition, as shown in FIG. 16 (e), horizontal forces such as wind and earthquake are applied to unit buildings in which three building units are stacked one above the other and the auxiliary units 10 and 10 are connected and fixed to the first and second floor parts. Then, the horizontal force is supported by the second floor construction surface P1 and the third floor construction surface P2. Furthermore, as shown in FIG. 16 (f), even in a unit building in which three building units are stacked one above the other and the incidental unit 10 is connected and fixed on the second floor, the floor on the second floor is affected by a horizontal force such as wind or earthquake. This horizontal force is supported by the construction plane P1 and the floor construction plane P2 on the third floor. For this reason, even if the incidental unit 10 is a non-bearing structure, it can counter external forces on the floor construction surface of the building unit 1 which is a bearing structure, and the accompanying unit 10 having a flexible structure can be connected to The internal space can be expanded at low cost.

  In FIG. 17 (a), four building units 1 are combined to form a unit building H, and are connected along the long side direction (X direction) of the building unit 1 constituting the unit building H. The incidental unit 10A is connected and fixed to the first and second floor building units 1 and 1. In this example, the internal space of the building units on the first and second floors can be greatly expanded. Further, this extended portion can be used as a blow-through.

  In FIG. 17 (b), 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 10A is connected and fixed to the first-floor building unit 1, and a balcony BL is installed above the incidental unit 10A. In this example, as shown in FIGS. 8 and 10 (b), a fixing tool such as a bolt is passed through a through hole 21a formed in the upper end surface of the pillar member 11A of the accessory unit 10A, and screwed into an inner nut 28 to be balconyd. The pillar B can be fixed.

  In FIG. 17 (c), a unit building H is constructed by combining four building units 1 up and down and arranging five building units by arranging one building unit 1 on the first floor in the X direction. 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. 17 (d), four building units 1 are combined to form a unit building H, and an accessory unit for a short side along the long side direction (X direction) of the building unit 1 constituting the unit building H. 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 incidental unit.

  In FIG. 17 (e), 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 10B is connected and fixed so as to be continuous with the units 1 and 1. This incidental unit 10B has the same configuration as the aforementioned incidental units 10 and 10A, and is configured by connecting two side surfaces 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.

  Next, another embodiment of the present invention will be described with reference to FIG. In 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 as compared with the embodiment described above, and the column on one side of the building unit and the column on one side of the incidental unit Are matched, the other side pillar of the building unit and the other side pillar of the incidental unit are slightly shifted by the thickness of the outer wall panel PL. In this case, the pillar material of the building unit and the pillar material of the incidental unit can be bolted or connected by a beam portion. Other substantially equivalent configurations are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 18, the incidental unit 10 </ b> C connected to the building unit 1 includes four column members 11 </ b> A and 11 </ b> B and four lower beams 12 that connect the lower ends of the column members in the horizontal direction in the same manner as in the above embodiment. , 12, 13, 13 and four upper beams 14, 14, 15, 15 that connect the upper ends of the column members in the horizontal direction. The upper beam 14 is rigidly attached to the column members 11A, 11B. The lower beam 12 is bolted to the column members 11A and 11B. The incidental unit 10C has a length in the y direction that is slightly shorter than the length in the y direction of the building unit 1 by the thickness of the outer wall panel PL. Therefore, when the column member on one side is combined with the column member of the building unit 1, the other side The column material on the side does not match the column material on the other side of the building unit, and a shift occurs.

  That is, as shown in FIGS. 10 and 12, etc., the pillar material on one side is connected to the pillar material 2 of the building unit 1 and the pillar material 11A of the incidental unit 10C by the bolt 31 and the nut 32. On the other side, the pillar 2 and the pillar 11A do not match. For this reason, in the state which does not correspond, it connects with a bolt nut, or it connects with a beam part. When connecting at the beam portion, as shown in FIG. 18, the spacer 40 is sandwiched between the column member 2 and the column member 11A, and the lower beam 4 of the building unit 1 and the lower beam 13 of the auxiliary unit 10C are connected to the connecting plate 41. And connect with bolts and nuts. Although not shown, the upper plate side is similarly connected with bolts and nuts by passing a connecting plate. Also in this embodiment, the auxiliary unit 10C has a simple structure because the lower beam 12 and the upper beam 14 constituting the two side surfaces are rigidly connected, and the indoor space can be expanded at low cost. In addition, in this embodiment, it is preferable that the long side floor beam apart from the building unit 1 of the incidental unit 10C is fixed to a foundation (not shown) with an anchor bolt.

  Furthermore, still another embodiment of the present invention will be described with reference to FIG. In this embodiment, the length in the direction of the incidental unit is smaller than the length in the long side direction (horizontal direction) of the building unit as compared with the above-described embodiment, and the length of the building unit corresponds to the column material of the incidental unit. An intermediate column is provided as a reinforcing member between the upper beam and the lower beam, and the intermediate column and the column material of the incidental unit are connected and configured. Other substantially equivalent configurations are denoted by the same reference numerals and description thereof is omitted.

  In FIG. 19, the incidental unit 10D connected to the building unit 1 includes four column members 11A and 11B and four lower beams 12 that connect the lower ends of the column members in the horizontal direction, as in the above-described embodiment. , 12, 13, 13 and four upper beams 14, 14, 15, 15 that connect the upper ends of the column members in the horizontal direction. The upper beam 14 is rigidly attached to the column members 11A, 11B. The lower beam 12 is rigidly joined to the column members 11A and 11B in the same manner.

  In the building unit 1, an intermediate column 45 (reinforcing member) made of C-shaped steel is erected vertically between the lower beam 3 and the upper beam 5 in accordance with the column material 11A of the incidental unit 10D. A spacer 46 is sandwiched between the intermediate column 45 and the column material 11 </ b> A of the incidental unit 10 </ b> D and connected by a bolt nut 47. Also in this embodiment, the auxiliary unit 10D has a simple structure and a low cost because the lower beam 12 and the upper beam 14 constituting the two side surfaces are rigidly joined to the upper and lower ends of the column members 11A and 11B. The internal space of the unit can be expanded. In this embodiment, since the intermediate column 45 is erected between the lower beam 3 and the upper beam 5 in the long side direction of the building unit 1, the ceiling unit beam 48 is provided as an auxiliary beam to reinforce the building unit 1. It is preferable.

  In the incidental unit 10 described above, two pillars 11A and 11B, and the upper beam 14 and the lower beam 12 are rigidly joined to two opposed vertical surfaces (sleeve frames 16 and 16 in the XZ direction) of the rectangular parallelepiped. The other two standing surfaces (YZ direction) are two rigid joint surfaces, the two column members 11A and 11A, the two column members 11B and 11B, and the upper beams 15 and 15 and the lower beam 13 , 13 are connected to each other through a joint plate 22 by a fixture such as a bolt and nut. However, in another embodiment of the accessory unit shown below, two adjacent column members 11A, 11B and an upper beam 14 are connected. And two opposite side surfaces (sleeve frame in the XZ direction) of the rectangular parallelepiped composed of the lower beam 12, one of the upper beam or the lower beam is rigidly joined to the two column members, and the other is a bolt nut or the like It is connected and fixed to two column members by a fixture.

  That is, in the incidental unit 10E shown in FIG. 20, as shown in FIGS. 22 and 23, the two side surfaces (sleeve frames) 16A and 16A are adjacent to the two pillar members 11A and 11B, the upper beam 14 and the lower beam. 12, the lower beam 12 is rigidly joined to the lower ends of the two column members 11A and 11B by welding or the like, and the upper beam 14 is an upper end portion of the two column members 11A and 11B with a bolt nut or the like as a fixture. It is connected to. In the incidental unit 10E, the upper beams 14, 14 are rigidly joined to the upper ends of the two column members by welding or the like, and the lower beams 12, 12 are bolt nuts or the like as shown in FIG. Although not shown in the drawing, the upper beams 14 and 14 may be rigidly connected to each other by a fixing tool connected to the lower ends of the two column members. In the incidental unit 10E of this embodiment, one of the upper beam 14 and the lower beam 12 constituting the two sleeve frames 16A and 16A is rigidly joined by welding or the like, and the other is pin-joined by a fixture such as a bolt and nut. Therefore, the configuration is more flexible than the incidental unit of the above-described embodiment, and the configuration is easier to follow the building unit when connected and fixed to the building unit 1.

  Further, as an additional embodiment of the incidental unit, the incidental unit 10F shown in FIG. 21 has four lower beams 12, 13 and four upper beams 14, 15 that are bolted to the four column members 11A, 11B. The two side faces (sleeve frames in the XZ direction) 16B, 16B are composed of two adjacent pillar members 11A, 11B, the upper beam 14 and the lower beam 12 which are connected by a fixture such as a nut. The lower beam 12 is connected to the lower ends of the two column members 11A and 11B by a fixture such as a bolt and nut, and the upper beam 14 is also connected to the upper ends of the two column members 11A and 11B by a fixture such as a bolt and nut. It is connected. The upper beam 15 and the lower beam 13 in the long side direction are connected to the upper and lower ends of the two column members 11A and 11B through a joint plate (not shown) with a fixture such as a bolt and nut. That is, the accessory unit 10F is configured by connecting the four column members constituting the rectangular parallelepiped, the four lower beams, and the four upper beams, all by a fixture such as a bolt and nut. The structure has no rigid joint.

  In the incidental units 10E and 10F shown in FIGS. 20 to 23, the two columnar members 10B and 10B on the eaves side are made of lo-shaped steel (square steel pipe) having a substantially square cross-sectional shape as in the above-described embodiment. It is a closed cross-sectional shape, and the column material on the eaves side, that is, the column material 10A, 10A on the side connected to the building unit 1, is an open cross-sectional shape made of channel steel or C-shaped steel having a substantially U-shaped cross-section. is there. And although the connection part by a bolt nut etc. is not illustrated in detail, it is connected using the joint plate to the pillar material of an open cross-sectional shape similarly to the said embodiment. That is, as shown in FIG. 9A, the lower beam 13 and the upper beam 15 can be connected and fixed by the bolts 23 by the through holes 11c and the nuts 11d provided at the upper and lower ends of the column member 11B. Further, as shown in FIGS. 22 and 23, the upper beam 15 is connected and fixed by a through hole 11c and a nut 11d provided in the upper portion of the column member 11B, and an opening 11e formed in the lower portion of the column member 11B. The lower beam 13 can be connected and fixed by the connecting portion 11f and the through hole 11g.

  Even in these incidental units 10E and 10F, since the two pillar members 10B and 10B facing the outer wall side have a closed cross-sectional shape, the fire-resistant coating of the pillar member on the outer wall side is omitted even when constructed in a fire prevention area or the like. can do. Further, in these incidental units, the sleeve frames 16A and 16B forming the opposite side surfaces are more flexible than the rigidly connected side surfaces, and are transmitted to the connected building units when a horizontal force is applied. Therefore, it is configured to compete.

  Another embodiment of the present invention will be described with reference to FIG. The connection between the column member and the beam member by the bolts and nuts constituting the accessory unit of the present invention may show a structural property similar to a fixed joint or a semi-fixed joint, depending on the specifications. In this embodiment, a connection structure that avoids a state close to fixed joining is adopted (pin joining). In FIG. 24, the plate 12c is welded to the end portion of the beam material (lower beam 12), the connecting plate 12d is further welded to the center portion of the plate 12c, and the interval between the through holes through which the bolts and nuts are inserted is reduced. . By comprising in this way, the plate 12c is easy to deform | transform and the softness | flexibility of the connection part of a pillar and a beam can be improved.

  FIG. 25 shows still another embodiment of the accessory unit. In the above-described embodiment, the accessory unit has four pillars with four lower beams and four upper beams formed as pillar winning specifications, but in this embodiment, the beam winning specifications are as follows. It is formed. In the incidental unit 10G of FIG. 25, the four upper beams 14a, 14a, 15a, and 15a are connected to each other by a fixture such as a bolt and nut inserted into the through hole, and formed into a rectangular shape. Below the four beam members, four column members 11h are connected by a fixture such as a bolt and nut. The connection between the lower part of the column 11h and the four lower beams is not shown, but the four lower beams are similarly connected to each other in a rectangular shape by a fixing device such as a bolt and nut, and formed into a rectangular shape. The lower end of the four column members is connected to the upper part of the lower beam. As described above, the incidental structure according to the present invention can be applied with an appropriate structure such as a column winning structure, a beam winning structure, or a combination of pillar winning and beam winning.

  Furthermore, the modification of the connection part of the incidental structure of this invention and a building unit is demonstrated with reference to FIGS. 26-28, the incidental unit 10H is connected along the long side direction of the building unit 1 as described above, and the length of the incidental unit 10H in the long side direction (horizontal direction) is the same as that of the building unit 1. It is set shorter than the length in the long side direction. For this reason, when the pillar of the incidental unit 10H and the pillar of the building unit 1 are matched on one side, they do not match on the other side, and the other pillar of the incidental unit 10H is located in the middle of the long side direction of the building unit 1. .

  In the example shown in FIGS. 26 to 28, a joining attachment 51 is welded to an intermediate portion of the upper beam (ceiling beam) 5 of the building unit 1, and an auxiliary beam 52 is connected to the attachment as a reinforcing member. Although not shown, the attachment 51 is similarly welded to the upper beam on the opposite side of the upper beam 5, and the auxiliary beam 52 is connected between both beams. The attachment 51 is formed from a steel material 51a 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 51b. A through hole for connecting the auxiliary beam 52 is formed on the back surface of the steel material 51a, and two nuts 53 are fixed inside. Furthermore, a connecting plate 52a is welded to both ends of the auxiliary beam 52, and two connecting holes for inserting bolts are formed in this connecting plate.

  The steel plate 51b is formed with three through holes through which bolts connecting the accessory unit 10H are inserted, and three nuts 53 are fixed inside. In this case, it is necessary to weld the nut 53 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 being broken by using a nut combined body 54 accommodated in a metal case 54a as shown in FIG. 28 and welding the metal case 54a.

  In the connection structure configured as described above, the auxiliary beam 52 is connected to the upper beam 5 of the building unit 1 and the upper beam facing the building unit 1 by connecting the bolts 56 to the nuts 53 via the attachments 51 and 51. The auxiliary unit 10H is connected to the outer side of the upper beam 5 of the reinforced portion with a spacer 55 interposed therebetween. That is, the connecting bolt 56 is inserted from the inside of the joint plate of the column member 11A of the accessory unit 10H located outside the upper beam 5, and the spacer 55 is penetrated to be screwed into the nut 53 in the attachment 51 to be fixed.

  In the connection structure of the incidental units configured as described above, the intermediate portion of the beam material (upper beam 5) of the building unit 1 where the pillar of the incidental unit 10H is located can be reinforced, and the incidental unit is an intermediate portion of the beam material. Even if connected to each other, the building unit 1 is reinforced so that 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.

  Further, in another embodiment shown in FIG. 29, the building unit 1 connecting the incidental unit 10I is reinforced by the auxiliary beam 52A and the intermediate column 45A as a reinforcing member. The auxiliary beam 52A in this example is similarly formed of C-shaped steel, and the intermediate column 45A is also formed of C-shaped steel. And the attachment 51A for joining for connecting the auxiliary beam 52A is the shape which cut | disconnected C-shaped steel, and is welded to the upper beam 5 similarly to the attachment 51 mentioned above. The auxiliary beam 52A is connected between the upper beams 5 and 5 by bolts 56 and nuts 53 via attachments 51A and 51A. Further, the intermediate column 45A 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 that connect the accessory unit 10I having a short length are reinforced by the auxiliary beam 52A and the intermediate column 45A. It has the feature of being stable.

  The incidental unit 10J which is an incidental structure of another embodiment shown in FIG. 30 is configured as a balcony unit. As shown in FIG. 30B, the accessory unit 10J is illustrated as a sleeve frame F1 in which the lower ends of the two pillar members 11A and 11B are connected by the lower beam 12 and the upper ends are connected by the upper beam 14. A floor frame F2 in which the lower beams 13 and 13 are welded to the floor joists, and a ceiling frame F3 in which the upper beams 15 and 15 are welded to the ceiling joists. Are connected by a fixture such as a bolt and nut through a joint plate or an opening and a connecting portion to form a rectangular parallelepiped rectangular unit.

  Although the sleeve frame F1 is not shown in detail, the lower beam 12 and the upper beam 14 are rigidly joined to the two column members 11A and 11B, or the lower beam 12 and the upper beam, as in the previous embodiment. One of 14 is rigidly joined to the column members 11A and 11B by welding, and the other is connected to the column members 11A and 11B by bolts and nuts. Alternatively, the lower beam 12 and the upper beam 14 are both connected to the column members 11A and 11B by bolts and nuts. Further, a balcony handrail 19 is connected and fixed to a middle stage in the long side direction on the eaves side by a fixing tool such as a bolt and nut. In this way, the upper surface, the lower surface, and both side surfaces of the rectangular parallelepiped composed of the plurality of frames F1 to F3 are covered with the outer wall material (not shown), and the incidental unit 10J is configured.

  The incidental unit 10J in this example is connected and fixed to the pillars 2 and 2 which are members constituting one elevation of the building unit 1, and is connected to the mounting hole 30 through bolts in the same manner as in the above embodiment. Fixed. Then, by connecting and fixing the accessory unit 10J to the unit building, a balcony surrounded by the second floor portion of the unit building can be formed.

  Further, the incidental structure of the embodiment shown in FIG. 31 is an incidental unit 10K, which is connected and fixed to an elevation surface (YZ plane) on the long side of the building unit on the first floor. The incidental unit 10K is configured with a length shorter than the length of the long side of the building unit 1 and does not coincide with the column members 2 and 2 at both ends constituting the long side of the building unit 1, and the upper beam The column material of the incidental unit is aligned and fixed to an intermediate column (not shown) connected between the lower beams. In this short incidental unit 10K, by connecting the incidental unit 10K having a length shorter than the long side of the building unit 1, it is possible to achieve diversification of the appearance by changing the appearance of the unit building. .

  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, an example in which two column members out of four column members constituting an incidental structure are formed of a closed cross-section steel with a substantially cross-sectional shape is shown. As a matter of course, a section steel made of a prism 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 channel steel or C-shaped steel has been described as the column material constituting the accessory unit, steel materials of other shapes such as H-shaped steel may be used.

  In the above-described embodiment, the side unit (sleeve frame) 16 and 16 whose main parts are shown in FIG. 6 are rigidly joined by welding or the like, and the accessory unit 10 is shown in FIGS. 14 (c), (f), (g), and the like. This is suitable for a Chianti-type unit building in which there is no accessory unit in the lower floor part and the accessory unit is connected to the second floor. Further, as in the side surfaces (sleeve frames) 16A and 16A shown in FIG. 20, one of the upper beam and the lower beam is welded, and the other is pin-joined with a bolt nut or the like, as shown in FIG. As in the side surfaces (sleeve frames) 16B and 16B, the incidental unit 10F in which the pillar material, the upper beam, and the lower beam are pin-joined with bolts and nuts or the like is suitable for being placed on the foundation. However, as a matter of course, it can be applied to the Chianti on the second floor by reinforcing the more flexible side units 10E, 10F with braces.

  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, 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I, 10J, 10K: Additional unit (Attachment structure), 11A, 11B: pillar material, 11c: through hole, 11d: nut, 11e: opening, 11f: connecting part, 11g: through hole, 11h: pillar material, 12, 13: lower beam, 12a : Joint plate (joint member), 12b: bolt and nut, 13a, 15a: end plate (joint member), 14, 14a, 15, 15a: upper beam, 16, 16B: side face (sleeve frame) in which a part is rigidly joined , 16A: bolted side surfaces (sleeve frame), 18: horizontal brace material, 20, 21: reinforcing plate, 22: joint plate (joint member), 23: bolt, 23a: 24: Through hole, 25: Reinforcement plate, 26: Connection plate, 30: Mounting hole, 31: Bolt (fixing tool), 32: Nut (fixing tool), 33: Guide pin, 45, 45A: Intermediate pillar (Reinforcing member), 51, 51A: Attachment for joining, 52, 52A: Auxiliary beam (reinforcing member), H: Unit building, BL: Balcony, B: Balcony pillar

Claims (16)

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 four column members, four lower beams that connect the lower ends of the column members in the horizontal direction, and four upper beams that connect the upper ends of the column members in the horizontal direction. Is formed in a rectangular parallelepiped shape, and is connected and fixed to a member constituting the one elevation surface of the building unit,
In the incidental structure, two opposite side surfaces of the rectangular parallelepiped are two column members and a rigid joint surface in which an upper beam and a lower beam are rigidly joined, and the other two opposite side surfaces are two column members. The upper beam and lower beam are connected via a joint member by a fixture such as a bolt and nut,
Of the four pillars, two pillars on the building unit side are made of channel steel or C-shaped steel having a substantially U-shaped cross section, and the other two parts on the side away from the building unit. The column of the book is made of a round steel with a cross-sectional shape that is approximately
The joint member connects the two column members and the upper beam and the lower beam, and is fixed so as to block a part of the opening of the grooved steel or C-shaped steel. An accessory structure characterized in that a fastening space for a fixture such as a bolt and nut is formed on the back side. 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 four column members, four lower beams that connect the lower ends of the column members in the horizontal direction, and four upper beams that connect the upper ends of the column members in the horizontal direction. Is formed in a rectangular parallelepiped shape, and is connected and fixed to a member constituting the one elevation surface of the building unit,
The two opposite side faces of the rectangular parallelepiped composed of two adjacent column members of the incidental structure and the upper beam and the lower beam, one of the upper beam or the lower beam is rigidly joined to the two column members, One side is connected and fixed to two pillars via a joint member by a fixture such as a bolt and nut,
Of the four pillars, two pillars on the building unit side are made of channel steel or C-shaped steel having a substantially U-shaped cross section, and the other two parts on the side away from the building unit. The column of the book is made of a round steel with a cross-sectional shape that is approximately
The joint member connects the two column members and the upper beam and the lower beam, and is fixed so as to block a part of the opening of the grooved steel or C-shaped steel. An accessory structure characterized in that a fastening space for a fixture such as a bolt and nut is formed on the back side. 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 four column members, four lower beams that connect the lower ends of the column members in the horizontal direction, and four upper beams that connect the upper ends of the column members in the horizontal direction. Is formed in a rectangular parallelepiped shape, and is connected and fixed to a member constituting the one elevation surface of the building unit,
The four lower beams and the four upper beams are connected to the two column members via a joint member by a fixing member such as a bolt and nut, and are fixed to the other two column members such as a bolt and nut. Connected by tools,
Of the four pillars, two pillars on the building unit side are made of channel steel or C-shaped steel having a substantially U-shaped cross section, and the other two parts on the side away from the building unit. The column of the book is made of a round steel with a cross-sectional shape that is approximately
The joint member connects the two column members and the upper beam and the lower beam, and is fixed so as to block a part of the opening of the grooved steel or C-shaped steel. An accessory structure characterized in that a fastening space for a fixture such as a bolt and nut is formed on the back side. An opening and a flat connecting portion continuous to the opening are formed on two adjacent vertical surfaces of at least one of the upper and lower ends of the rod-shaped steel,
Claim 1-3 wherein at least one of the on the beam and lower beam connected to the other two pillars material, characterized in that is connected to the connecting portion with fasteners such as bolts and nuts through the opening The incidental structure as described in any one of. The accessory structures, accessory structure as claimed in any one of claims 1 to 4, wherein the beam on the side to be connected to the building unit is L-shaped steel. Of the four upper beams and the four lower beams, two upper beams, two lower beams, and two upper beams in a direction protruding from a mounting surface to which the auxiliary structure of the building unit is attached. The accessory structure according to any one of claims 1 to 5 , wherein two sleeve frames are formed by two pillar members connecting both ends of the two lower beams. The accessory structure according to any one of claims 1 to 6 , wherein the connection by the fixture is detachably connected to the column member by a bolt and nut via a joint member. The column member is fixed with a horizontal reinforcing plate that closes the openings at the upper and lower ends of the channel steel or C-shaped steel, and a horizontal reinforcing plate that supports the joint member is fixed together with the reinforcing plate. The incidental structure according to claim 7 , wherein: The incidental structure according to claim 7 or 8 , wherein a triangular reinforcing plate that reinforces the ribs of the channel steel or the C-shaped steel is fixed to the column material. The joint member has a flat plate shape, and an upper and lower wide portion and a central narrow portion are connected by an inclined side, and a through-hole into which a bolt for connecting the lower beam and the upper beam is inserted into the wide portion. accessory structure as claimed in any one of claims 7-9, characterized in that it is formed. The incidental structure according to any one of claims 1 to 10 , 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 11 , wherein the incidental structure includes a horizontal brace material that connects at least upper portions of the four column members. A unit building, wherein the incidental structure according to any one of claims 1 to 12 is connected and fixed to the building unit. The unit building according to claim 13 , 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 13 or 14 , 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 13 to 15 , wherein the unit building is reinforced by a reinforcing member.

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