JP2019011655A - Building unit and building - Google Patents

Abstract

To provide a building unit that eliminates junction structure formed by welding from joint parts between columns and beams, while securing sufficient structural resistance.SOLUTION: The present invention relates to a building unit 1 having a rectangular unit frame 1a which connects between upper end portions of four columns 3 by four floor girders 5, and connects between lower end portions of four columns 3 by four floor girders 5. In the rectangular unit frame, an end portion or a side surface of end portion of a ceiling girder 4 is joined to the upper end portion or a vicinity of upper end portion of each column 3 by bolts 6, 7; and an end portion or a side surface of vicinity of end portion of the floor girder 5 is joined to the lower end portion or the vicinity of lower end portion of each column 3 by the bolts 6,7. The column 3, the ceiling girder 4 and the floor girder 5 are respectively C-shaped channel steels having a pairs of flange parts 3b to 5b, 3c to 5c at both ends of web parts 3a to 5a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a building unit and a building.

  For example, some buildings such as detached houses are built by the unit method. In the unit construction method, a plurality of building units manufactured in advance in a factory are transported to a building site, and a plurality of building units are assembled on the building site so that a building can be constructed in a short period of time.

  The building unit described above includes a steel frame system having a rectangular parallelepiped unit frame in which the upper ends of the four columns are connected by four ceiling beams and the lower ends of the four columns are connected by four floor beams. (For example, refer to Patent Document 1).

JP-A-51-111716 JP 2006-200823 A JP 58-94545 A Japanese Patent Publication No. 61-60282

  However, since the building unit described in Patent Document 1 is fixed between the side surface of the column and the end surface of the ceiling beam or between the side surface of the column and the end surface of the floor beam by butt welding or the like, There was a problem that a large-scale welding facility was required. In addition, for example, when fixing between the side of the column and the end face of the ceiling beam or between the side of the column and the end face of the floor beam by butt welding, the required route gap is required. There was a problem that alignment and positioning were difficult.

  On the other hand, in wooden buildings, as shown in Patent Document 2, some wooden columns and beams are fixed with bolts using mounting brackets, but mounting brackets are required. Therefore, the number of parts increases, and the parts cost and the labor of attaching the mounting bracket are increased. Also, do not connect the wooden column and beam directly with bolts, but install two mounting brackets at the diagonal positions where the wooden column and beam intersect, and connect the column and beam. Since it is fixed indirectly via the mounting bracket, there is a problem that it is difficult to obtain accuracy. Further, since the mounting bracket is attached to the outer surface of the column or beam, there is a possibility that the mounting bracket may protrude from the outer surface of the column or beam depending on the way of mounting, and there is a problem that it is difficult to use. In addition, there is a problem in that long through bolts that pass through the columns and beams must be used to fix the mounting brackets to the wooden columns and beams.

  Further, as shown in Patent Document 3, a roof structure is configured by connecting a pair of left and right metal beams integrally with a mounting bracket having a gap between which a column can be inserted, and a roof structure. Is mounted on the upper end of the metal pillar, and there is also a joint between the side face of the metal pillar inserted into the gap and the end face of the beam with a bolt extending in the longitudinal direction of the beam However, the mounting bracket becomes indispensable for constituting the roof structure, and the mounting bracket has a reinforcing rib protruding upward from the joint portion between the column and the beam. There was a problem that the reinforcing ribs) were in the way.

  Furthermore, as shown in Patent Document 4, there are also simple buildings and the like in which metal columns and beams are fixed using a bolt joint or the like that is tightened in a fitted state. In the unit, it is structurally not permitted to use such bolt joints for the main part of structural strength.

  Therefore, the present invention mainly aims to solve the above-described problems.

  In order to solve the above-mentioned problem, the present invention is a rectangular parallelepiped in which the upper ends of four columns are connected by four ceiling beams and the lower ends of the four columns are connected by four floor beams. In the building unit having a unit frame, the end of the ceiling beam or a side surface near the end is joined to the upper end or the vicinity of the upper end of each column with a bolt, and the lower end or the lower end of each column In the vicinity, the end of the floor girder or the side surface near the end is joined with a bolt. Thereby, as for a building unit, the junction part of a pillar, a ceiling girder, and a floor girder becomes a junction structure by a bolt.

  According to the present invention, with the above configuration, the building unit can eliminate the joint structure by welding from the joint portion between the column and the beam while ensuring sufficient structural strength.

It is a whole perspective view which shows the structure of the building concerning this Embodiment. It is a whole perspective view of the unit frame which comprises the building unit of FIG. It is an expansion perspective view which shows the upper end part of the pillar of FIG. It is an expansion perspective view which shows the lower end part of the pillar of FIG. It is the elements on larger scale similar to FIG. 3 which shows the suspension structure of a building unit. It is a partial side view which shows the reinforcement plate of FIG. 5A. It is a top view of the unit frame of a building unit. It is an enlarged plan view of the corner part (A part of FIG. 6A) of a building unit. It is sectional drawing along the BB line of FIG. 6B. It is sectional drawing along CC line of FIG. 6A. It is a disassembled perspective view which shows the corner part of a building. It is a perspective view which shows the attachment state of the horizontal joint plate for connecting a building unit sideways. It is sectional drawing of the girder direction which shows the state which connected between the said building units adjacent on the same floor. It is sectional drawing of the wife direction which shows the state which connected between the said building units adjacent on the same floor.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 8C are for explaining this embodiment.

  <Configuration> The configuration will be described below.

  For example, a building such as a detached house is built by a unit method. As shown in FIG. 1, the unit construction method constructs a building 2 in a short period of time by transporting a plurality of building units 1 manufactured in advance in a factory to a construction site and assembling the plurality of building units 1 at the building site. Is.

  As shown in FIG. 2, the building unit 1 described above connects the upper ends of the four pillars 3 with the four ceiling beams 4 and connects the lower ends of the four columns 3 with the four floor beams. It is assumed that the steel frame system has the rectangular parallelepiped unit frames 1 a connected at 5.

  In addition to the basic or overall configuration as described above, this embodiment has the following configuration.

  (1) As shown in FIG. 3, the end of the ceiling beam 4 or the side surface near the end is joined to the upper end of each column 3 or the vicinity of the upper end with bolts 6 and 7. Similarly, as shown in FIG. 4, the end of the floor beam 5 or the side surface near the end is joined to the lower end or the vicinity of the lower end of each column 3 with bolts 6 and 7.

  Here, as shown in FIG. 3, the four ceiling beams 4 each have a pair of a long ceiling beam 41 and a short ceiling girder 42 (see FIG. 2).

  The long ceiling girder 41 has a side surface in the vicinity of the end thereof joined to a side surface of the upper end portion of the column 3 with a first bolt 6 in a plane. In addition, the side of the end portion of the short ceiling beam 42 is joined to the side surface in the vicinity of the upper end portion of the column 3 with the second bolt 7.

  Similarly, as shown in FIG. 4, the four large floor beams 5 each have a pair of a long floor girder beam 51 and a short floor girder beam 52 (see FIG. 2).

  The long floor girder beam 51 has a side surface in the vicinity of its end portion joined to a side surface of the lower end portion of the column 3 with a first bolt 6. Further, the short floor girder beam 52 has its side face joined to the side face near the lower end of the column 3 with the second bolt 7 in a plane.

  At this time, the first bolt 6 and the second bolt 7 extend in directions orthogonal to each other when viewed from above. The pillar 3, the ceiling beam 4, and the floor beam 5 are provided with bolt holes 9 through which bolts 6, 7 and the like are passed.

  (2) The pillar 3 may be a C-shaped channel steel having a pair of flange portions 3b and 3c at both ends of the web portion 3a. The ceiling girder 4 may be a C-shaped channel steel having a pair of flange portions 4b and 4c at both ends of the web portion 4a. And the floor girder 5 is good also as C-shaped channel steel which has a pair of flange parts 5b and 5c in the both ends of the web part 5a.

  Here, the pillar 3, the ceiling girder 4 and the floor girder 5 may be the same size of groove steel, or may be different sizes of groove steel, but at least the flange portions 3b to 5b and 3c to 5c. Are preferably aligned to the same width dimension. In this embodiment, the pillar 3, the ceiling girder 4 and the floor girder 5 are each made of groove steel having the same size. Moreover, ratio of the width dimension of the web parts 3a-5a and the flange parts 3b-5b, 3c-5c is set to 2: 1, respectively. For example, when the height of the building unit 1 is 2833 mm, the pillar 3, the ceiling girder 4 and the floor girder 5 are respectively 100 mm in width dimension of the web parts 3a to 5a and width dimensions of the flange parts 3b to 5b and 3c to 5c. Can be 50 mm, and the wall thickness can be 3.2 mm.

  And the edge part vicinity of the pillar 3, the ceiling girder 4, and the floor girder 5 is made into the position etc. which shifted | deviated by the width dimension of web part 3a-5a, flange part 3b-5b, 3c-5c, respectively from the edge part.

  As shown in FIG. 5A, the upper flange portion 4b of the ceiling girder 41 has a bolt hole 13 in which an eyebolt 12 to be hung by the hanging wire 11 can be attached and detached when the building unit 1 is transported. . The bolt holes 13 can be provided at the positions of the columns 3 at both ends of the ceiling beam 41.

  At this time, as shown in FIG. 5B, the upper and lower flange portions 4b, 4c are provided on both sides of the mounting position of the eyebolt 12 inside the ceiling beam 41 to prevent partial deformation of the ceiling beam 41. You may make it attach a pair of parallel reinforcement plate 14 which connects between. The reinforcing plate 14 can be welded and fixed to the web portion 3a and the flange portions 3b and 3c of the ceiling beam 41 (welded portion 15).

  (3) More specifically, as shown in FIG. 3, the web portion 3 a of the column 3 and the web portion 4 a of the ceiling beam 4 may be brought into surface contact and joined with bolts 6. Further, as shown in FIG. 4, the web portion 3 a of the pillar 3 and the web portion 5 a of the floor beam 5 may be brought into a surface contact state and joined with a bolt 6.

  Here, as shown in FIG. 3, the pillars 3 are arranged in a C-shape that opens outward with respect to the building unit 1. The column 3 is installed at a position closer to the center in the girder direction 17 than the corner portion of the building unit 1 by the width dimension of the flange portions 4b and 4c of the ceiling girder 42. With this arrangement, the girder direction 17 becomes the strong axis direction of the column 3, and the wife direction 18 becomes the weak axis direction of the column 3.

  The ceiling girder 4 is a ceiling girder 41. The ceiling girder 41 is arranged so as to have a C-shape that is open to the inside with respect to the building unit 1. And the upper end part of the web part 3a of the column 3 and the vicinity of the end part of the web part 4a of the ceiling girder 41 (by the width dimension of the flange parts 4b and 4c of the ceiling girder 42, closer to the center in the girder direction 17 The position shifted) is fastened to the wife direction 18 (direction perpendicular to the contact surface) with the first bolt 6. The first bolt 6 may be one or more.

  Similarly, the floor girder 5 is a floor girder 51 as shown in FIG. The floor girder beam 51 is arranged so as to have a C-shape that opens inward with respect to the building unit 1. And the lower end part of the web part 3a of the column 3 and the vicinity of the end part of the web part 5a of the floor girder beam 51 (by the width dimension of the flange parts 5b and 5c of the floor girder beam 52, closer to the center in the girder direction 17 The position shifted) is fastened to the wife direction 18 (direction perpendicular to the contact surface) with the first bolt 6. The first bolt 6 may be one or more.

  (4) Then, as shown in FIG. 3, the flange portion 3 b of the column 3 and the web portion 4 a of the ceiling beam 4 may be brought into surface contact and joined with bolts 7. Further, as shown in FIG. 4, the flange portion 3 b of the column 3 and the web portion 5 a of the floor beam 5 may be brought into a surface contact state and joined with a bolt 7.

  Here, as shown in FIG. 3, the ceiling girder 4 is a ceiling twill beam 42. The ceiling girder 42 is arranged so as to have a C-shape that opens outward with respect to the building unit 1. Then, the vicinity of the upper end portion of the flange portion 3b outside the column 3 (the position shifted downward by the width dimension of the web portion 4a of the ceiling beam 41) and the end portion of the web portion 4a of the ceiling girder 42 are The second bolt 7 is fastened in the girder direction 17 (direction perpendicular to the contact surface). The second bolt 7 can be one or more.

  Similarly, as shown in FIG. 4, the floor girder 5 is a floor girder 52. The floor girder 52 is arranged in a C shape that opens outward with respect to the building unit 1. Then, the vicinity of the lower end portion of the flange portion 3b outside the pillar 3 (the position shifted upward by the width dimension of the web portion 5a of the floor beam 51) and the end portion of the web portion 5a of the floor girder beam 52 are The second bolt 7 is fastened in the girder direction 17 (direction perpendicular to the contact surface). The second bolt 7 can be one or more.

  (5) Further, as shown in FIG. 3, the ceiling beams 4 orthogonal to each other may be overlapped with each other and joined with bolts 8. Similarly, as shown in FIG. 4, the floor beams 5 that are orthogonal to each other may be overlapped with each other and joined with bolts 8.

  Here, as shown in FIG. 3, the ceiling beams 4 orthogonal to each other are a ceiling beam 41 and a ceiling beam 42. The ceiling girder 41 is disposed on the upper side of the ceiling girder 42, and the vicinity of the end of the ceiling girder 41 and the end of the ceiling girder 42 (the width direction of the flanges 3b and 3c of the column 3 is 18 in the direction of the girth 18). Are fastened in the vertical direction 19 (in a direction perpendicular to the contact surface) with the third bolt 8. The third bolt 8 can be one or more.

  Similarly, as shown in FIG. 4, the floor beams 5 orthogonal to each other are a floor girder beam 51 and a floor girder beam 52. The floor girder beam 51 is arranged below the floor girder beam 52, and the vicinity of the end of the floor girder beam 51 and the end of the floor girder beam 52 (the width direction of the flange portions 3b and 3c of the column 3 is the wife direction). The position shifted toward the center of 18) is fastened in the up-down direction 19 (direction orthogonal to the contact surface) with the third bolt 8. The third bolt 8 can be one or more.

  (6) As shown in FIG. 3, the ceiling beams 4 orthogonal to each other may be joined with bolts 8 in a surface contact state between the opposing flange portions 4 b and 4 c. Similarly, as shown in FIG. 4, the floor beams 5 orthogonal to each other may be joined by bolts 8 with the flange portions 5 b and 5 c facing each other in a surface contact state.

  Here, as shown in FIG. 3, in the vicinity of the end of the lower flange portion 4c of the ceiling girder 41 positioned on the upper side and the end of the upper flange portion 4b of the ceiling girder 42 positioned on the lower side ( The third bolt 8 is fastened in the up-down direction 19 between the flange 3b and 3c of the column 3 and the flange 3b, 3c.

  Similarly, as shown in FIG. 4, the end of the upper flange portion 5b of the floor girder beam 51 positioned on the lower side and the vicinity of the end of the lower flange portion 5c of the floor girder beam 52 positioned on the upper side ( The third bolt 8 is fastened in the up-down direction 19 between the flange 3b and 3c of the column 3 and the flange 3b, 3c.

  (7) As shown in FIGS. 6A to 6D (mainly refer to FIGS. 6C and 6D), a ceiling beam 21 may be provided between a pair of opposed ceiling beams 4.

  Here, the ceiling beam 21 (or ceiling joist) is a member extending in the wife direction 18. A plurality of the ceiling beam 21 is arranged along the ceiling beam 41 at intervals in the beam direction 17. For the ceiling beam 21, steel, wood, or the like can be used as appropriate. For example, a two-by-four material or the like may be used for the ceiling beam 21. A ceiling surface material 22 is attached to the lower surface side of the ceiling beam 21.

  (8) In addition, a floor beam 23 may be installed between a pair of opposing floor beams 5.

  Here, the floor beam 23 is a member extending in the wife direction 18. A plurality of floor beams 23 are arranged along the floor beam 51 at intervals in the beam direction 17. For the floor beam 23, steel, wood, or the like can be used as appropriate. For example, a square steel pipe having a width of 75 mm, a height of 125 mm, and a thickness of 1.6 mm may be used for the floor beam 23. A floor material 24 is attached to the upper surface side of the floor beam 23.

  (9) Further, between the ceiling girder 4 and the floor girder 5 positioned above and below, the studs 25 and 26 may be attached.

  Here, the spacers 25 and 26 are members extending in the vertical direction 19. A plurality of the studs 25 can be arranged at intervals in the girder direction 17 along the ceiling girder beam 41 and the floor girder beam 51. Further, a plurality of studs 26 can be arranged along the ceiling girder 42 and floor girder 52 at intervals in the wife direction 18. A steel material (such as a stud material) or wood having a U-shaped cross section or a hat-shaped cross section, wood, or the like can be used as appropriate for the intermediate columns 25 and 26. An outer wall 27 can be attached to the outer portions of the spacers 25 and 26. An inner wall 28 (see FIGS. 6C and 6D) can be installed inside the outer wall 27. If necessary, a member 25a (such as a corner stud material) for attaching the outer wall 27 to the column 3 can be attached to the column 3 (see FIG. 6B). A fastener 29 such as a screw, a nail, or a bolt is appropriately used for attaching the above-described members.

  Hereinafter, the building 2 will be described.

  (10) As shown in FIG. 1, the building 2 of this embodiment may include the building unit 1.

  Here, the building 2 becomes a unit building by including the building unit 1. The unit building may be constituted by only the building unit 1 described above, or an existing part 31 using an existing building unit 1 in which the column 3, the ceiling beam 4 and the floor beam 5 are joined by welding. On the other hand, it is good also as what added the above-mentioned building unit 1 and provided the extension part 32. FIG.

  (11) As shown in FIG. 7, the floor girder 5 of the building unit 1 may be connected to the foundation 33.

  Here, the foundation 33 is a reinforced concrete structure installed on the ground in order to fix the building 2 to the ground. From the foundation 33, an anchor bolt 34 projects upward. The anchor bolt 34 is connected to the foundation 33 by passing through the through hole 35 provided in the lower flange portion 5c of the floor beam 51 and screwing a nut from above.

  (12) The ceiling girder 4 of the building unit 1 on the lower floor 36 and the floor girder 5 of the building unit 1 on the upper floor 37 may be coupled.

  Here, the upper flange portion 4b of the ceiling girder 4 (ceiling girder 41) of the building unit 1 on the lower floor 36 and the lower flange of the floor girder 5 (floor girder 51) of the building unit 1 on the upper floor 37. The part 5c is connected to the part 5c by directly or indirectly fastening with the connecting bolt 38.

  Bolt holes 39 for passing connection bolts 38 are provided in the flange portion 4b of the ceiling beam 4 on the lower floor 36 and the flange portion 5c of the floor beam 5 on the upper floor 37.

  (13) As shown in FIGS. 8A to 8C, the adjacent building units 1 may be connected on the same floor.

  Here, between adjacent building units 1, adjacent ceiling beams 4 and floor beams 5 are connected using horizontal joint plates 61 and 62. The horizontal joint plates 61 and 62 can be installed at a plurality of positions at intervals in the longitudinal direction of the ceiling beam 4 and the floor beam 5.

  As shown in FIGS. 8A and 8B, the horizontal joint plate 61 on the girder side is provided between the lower part of the lower flange part 4 c of the ceiling girder beam 41 and the upper part of the upper flange part 5 b of the floor girder beam 51. It is installed in

  Further, as shown in FIGS. 8A and 8C, the horizontal joint plate 62 on the side of the wife is between the upper part of the upper flange part 4b of the ceiling girder 42 and between the lower part of the lower flange part 5c of the floor girder 52. It is installed in

  In addition, a connecting ceiling plate 63 may be installed between the ceiling surface materials 22 in the building units 1 adjacent on the same floor so that the ceiling surfaces are continuous. Further, a connecting floor board 65 may be installed between the floor materials 24 in the building units 1 adjacent on the same floor so that the floor surfaces are continuous.

  <Effect> According to this embodiment, the following effects can be obtained.

  (Effect 1) The end of the ceiling beam 4 or the side surface near the end of the column 3 is joined with bolts 6 and 7 to the upper end or the vicinity of the upper end of the column 3, and the floor beam 5 is connected to the lower or lower end of the column 3. A unit frame 1a of the building unit 1 having a rectangular parallelepiped shape is constructed by joining the end portions or side surfaces in the vicinity of the end portions with bolts 6 and 7. Thereby, the building unit 1 does not have a joining structure by welding in the connection part or joining part (joint part) of the pillar 3 and the ceiling girder 4 or the floor girder 5.

  Therefore, a large-scale welding facility can be made unnecessary or the welding facility can be reduced. Alternatively, the building unit 1 can be manufactured even in a factory without welding equipment. And the joining structure by the bolts 6 and 7 is simply provided with bolt holes in the pillar 3, the ceiling beam 4 and the floor beam 5, and the bolt holes of the pillar 3, the ceiling beam 4 and the floor beam 5 are aligned. Accurate positioning at the time of total assembly is easy (compared to the case by welding), and workability is good. In addition, even at the time of extension and renovation, if the joint portion of the building unit 1 has a joint structure with the bolts 6 and 7, the work at the site is simplified. The building unit 1 having such a joint portion joined to the bolts 6 and 7 is particularly suitable for a small unit or an expansion unit.

  Then, the end of the ceiling beam 4 or the side surface near the end of the column 3 is directly joined to the upper end of the column 3 with the bolts 6 and 7, and the end of the floor beam 5 is connected to the lower end of the column 3 or near the lower end. Alternatively, by directly joining the side surfaces in the vicinity of the ends with bolts 6 and 7, there is no need for mounting brackets or the like at the joint of the building unit 1, and the number of parts can be reduced by that amount to reduce the component cost and mounting bracket mounting. Time and effort can be reduced.

  In particular, the longitudinal direction of the ceiling girder 4 and the floor girder 5 with the side surface of the ceiling girder 4 in surface contact with the column 3 (side surface) and the side surface of the floor girder 5 in surface contact with the column 3 (side surface) By joining using bolts 6 and 7 extending in the orthogonal direction, for example, the end surface of the ceiling beam 4 is abutted against the column 3 (side surface), and the end surface of the floor beam 5 is abutted against the column 3 (side surface). In this state, a stronger joining state can be obtained as compared with the case of joining using the bolts extending in the longitudinal direction of the ceiling girder 4 and the floor girder 5.

  (Effect 2) The pillar 3, the ceiling beam 4 and the floor beam 5 may be channel steel. Thereby, it becomes easy to directly join the pillar 3, the ceiling beam 4, and the floor beam 5 with the bolts 6 to 8 without using the mounting bracket, and it becomes easy to secure and improve the bonding accuracy. In addition, bolts 6 to 8 are accommodated in the space between the grooved steel web portions 3a to 5a and the left and right or upper and lower flange portions 3b to 5b and the flange portions 3c to 5c. 6-8 can be prevented from protruding, and the web portions 3a-5a, flange portions 3b-5b, and flange portions 3c-5c are firmly fastened and fixed using short bolts 6-8. Is possible.

  (Operation effect 3) The web portion 3a of the pillar 3 and the web portions 4a and 5a of the ceiling beam 4 (ceiling beam 41) and the floor beam 5 (floor beam 51) are brought into surface contact (contact each other). You may join directly with the volt | bolt 6 (it extends in the direction orthogonal to a surface). Accordingly, the column 3 and the ceiling beam 4 and the floor beam 5 can be fastened and fixed with high accuracy and strength.

  (Operational Effect 4) The flange portion 3b of the column 3 and the web portions 4a and 5a of the ceiling girder 4 (ceiling girder 42) and the floor girder 5 (floor girder 52) are brought into a surface contact state (contact with each other). You may join directly with the volt | bolt 7 (it extends in the direction orthogonal to a surface). Accordingly, the column 3 and the ceiling beam 4 and the floor beam 5 can be fastened and fixed with high accuracy and strength.

  (Effect 5) In addition to the connection between the column 3 and the ceiling girder 4 and between the column 3 and the floor girder 5 as described above, the ceiling girder 4 (the ceiling girder 41 and the ceiling wife) that are orthogonal to each other. The beams 42) and the large floor beams 5 (floor beam 51 and floor girder beam 52) perpendicular to each other are vertically overlapped (extend in a direction perpendicular to the contact surfaces). You may join directly with the volt | bolt 8. Thereby, the ceiling girder 4 (ceiling girder beam 41 and ceiling girder 42) and the floor girder 5 (floor girder beam 51 and floor girder beam 52) can be fastened and fixed with high accuracy and strength. .

  And three orthogonally formed between the column 3 and the ceiling beam 4 and between the column 3 and the floor beam 5, between the ceiling beam 4 orthogonal to each other and between the beam beams 5 orthogonal to each other. By combining the joining with the three types of bolts 6 to 8 extending in the direction orthogonal to the contact surface, the joining portion becomes a truss structure. By this joint portion of the truss structure, the building unit 1 can obtain sufficient structural strength only by bolting the column 3 to the ceiling beam 4 and the floor beam 5, such as bracing and mounting brackets. It becomes possible to make it unnecessary.

  (Function 6) Between the ceiling beams 4 orthogonal to each other and between the floor beams 5 orthogonal to each other, the bolts 8 directly connect between the upper and lower flange portions 4b and 4c and between the flange portions 5b and 5c. You may make it join. As a result, the ceiling beams 4 orthogonal to each other and the floor beams 5 orthogonal to each other can be fastened and fixed more firmly using the short bolts 8 in a state where they are stacked one above the other.

  (Effect 7) You may lay the floor beam 23 between a pair of facing ceiling beams 4 (for example, between the ceiling beam beams 41). Thereby, a ceiling surface can be comprised by sticking the ceiling surface material 22 on the ceiling beam 21.

  (Effect 8) The floor beam 23 may be installed between a pair of opposed large floor beams 5 (for example, between floor beams 51). Thereby, a floor surface can be comprised by sticking the floor material 24 to the floor beam 23. FIG.

  (Effect 9) You may attach the studs 25 and 26 between the ceiling beam 4 and the floor beam 5 located up and down. Thereby, the outer wall 27 etc. can be installed using the studs 25 and 26.

  (Effect 10) You may provide the building 2 provided with said building unit 1. FIG. Thereby, the building 2 can acquire the effect similar to the above by providing the above-mentioned building unit 1. FIG.

  (Effect 11) You may connect the said building unit 1 to the foundation 33. FIG. Thereby, the building unit 1 can be installed on the ground.

  (Operation Effect 12) The ceiling girder 4 of the building unit 1 on the lower floor 36 and the floor girder 5 of the building unit 1 on the upper floor 37 may be connected. Thereby, the building 2 of the multi-story formed by laminating | stacking the building unit 1 up and down can be constructed | assembled.

  (Effect 13) You may connect between the building units 1 which adjoin on the same floor. Thereby, the building 2 can be connected horizontally.

DESCRIPTION OF SYMBOLS 1 Building unit 1a Unit frame 2 Building 3 Column 3a Web part 3b Flange part 3c Flange part 4 Ceiling girder 4a Web part 4b Flange part 4c Flange part 5 Floor large beam 5a Web part 5b Flange part 5c Flange part 6 Bolt 7 Bolt 8 Bolt 21 Ceiling beam 23 Floor beam 25 Spacer 26 Spacer 33 Foundation 36 Lower floor 37 Upper floor

Claims (13)

In the building unit having a rectangular parallelepiped unit frame in which the upper ends of the four columns are connected by four ceiling beams and the lower ends of the four columns are connected by four floor beams.
While joining the end of the ceiling beam or the side surface near the end with a bolt at the upper end or the vicinity of the upper end of each column,
A building unit characterized in that an end of the floor beam or a side surface in the vicinity of the end is joined with a bolt to the lower end or the vicinity of the lower end of each column. The building unit according to claim 1,
The building unit, wherein each of the pillar, the ceiling beam and the floor beam is a C-shaped channel steel having a pair of flange portions at both ends of the web portion. The building unit according to claim 2,
The building unit, wherein the web portion of the column and the web portion of the ceiling beam and the floor beam are joined in a surface contact state with the bolt. The building unit according to claim 2 or 3,
The building unit, wherein the flange portion of the column and the web portion of the ceiling beam and the floor beam are joined in a surface contact state with the bolt. The building unit according to any one of claims 1 to 4,
The ceiling beams that are orthogonal to each other are joined together with the bolts in a state of being stacked one above the other,
A building unit characterized in that the floor beams that are orthogonal to each other are joined together with the bolts in a state of being stacked one above the other. A building unit according to claim 5 quoting any one of claims 2 to 4.
The ceiling beams that are orthogonal to each other are joined with the bolts in a surface contact state between the opposing flange portions,
The building floor unit characterized in that the floor beams that are orthogonal to each other are joined with the bolts in a state of surface contact between the opposing flange portions. The building unit according to any one of claims 1 to 6,
A building unit characterized in that a ceiling beam is installed between a pair of opposing ceiling beams. The building unit according to any one of claims 1 to 7,
A building unit characterized in that a floor beam is erected between the pair of opposed floor beams. The building unit according to any one of claims 1 to 8,
A building unit characterized in that a stud is attached between the ceiling beam and the floor beam positioned above and below.   A building comprising the building unit according to any one of claims 1 to 9. The building according to claim 10,
A building comprising a floor beam of the building unit connected to a foundation. A building according to claim 10 or claim 11,
A building comprising a ceiling beam of the building unit on the lower floor and a floor beam of the building unit on the upper floor. A building according to any one of claims 10 to 12,
The building which connected between the said building units adjacent on the same floor.