JP4591384B2 - Unit building - Google Patents

Description

  The present invention relates to a unit building capable of forming a large space without a column by removing a temporary column and reinforcing this portion.

  In general, a unit house is constructed by transporting a required number of building units, which are produced by assembling pillars and beams in a box shape at a factory, to a building site and installing them sequentially using a crane. In this case, a part where the pillars of adjacent building units are gathered in one place is generated, which has been an obstacle to creating a wide space.

Therefore, in recent years, a column-less type unit house called a wide span construction method has been proposed. In the case of this type of wide span method, transportability is ensured by attaching temporary columns to the building units in advance at the time of factory shipment, and the temporary columns are removed after the building units are sequentially installed in the building area. When the temporary column is removed, the strength of the part decreases, so a reinforcement beam is inserted between adjacent ceiling beams to make up for it, and the load that the temporary column should receive is borne (example) (See Patent Document 1 below).
Japanese Patent No. 3260266

  However, in the case of the above prior art, the reinforcing beam connects the columns on the outside of the adjacent building unit, so that the span length is long and the reinforcing beam extends from the ceiling beam on the lower floor side to the floor beam on the upper floor side. As described above, since the beam formation is high, the reinforcing beam is very large and heavy as a member. For this reason, the transportability by the transport vehicle from the factory to the building site is poor, and the installation work with the crane is also performed in the building site, so positioning is difficult and work efficiency is lowered.

  In view of the above facts, the present invention has an object to obtain a unit building that can secure a wide space beyond the unit boundary and can improve the transportability and assembly workability of the reinforcing beam.

In the first aspect of the present invention, in a unit building constituted by a plurality of building units by a plurality of building units, some columns of some building units are removable from the plurality of building units on the lower floor side. A large space that is continuous on the lower floor side by arranging a plurality of building units composed of temporary columns so that the temporary columns are adjacent to each other and forming a temporary column assembly removal part from which the temporary columns are removed Above the temporary column assembly removal part of the lower floor building unit in the upper floor building unit placed on the lower floor building unit forming the temporary pillar assembly removal unit The upper floor side reinforcement beam is fixed to the floor floor beam so as to connect the floor floor beam of the upper floor side building unit disposed opposite to each other with a predetermined gap therebetween , and further from the upper floor side reinforcement beam. Is the bracket height above There is provided a reinforcing beam side bracket that is lower than the height of the side reinforcing beam and the seating surface is oriented in the horizontal direction, and the bracket height is lower than the height of the floor large beam and the seating surface is A floor large beam side bracket oriented in the horizontal direction is provided, and by dropping the upper floor side reinforcing beam from above the gap, the reinforcing beam side bracket is locked to the floor large beam side bracket and the upper floor side reinforcing beam The assembling position is positioned .

  According to a second aspect of the present invention, in the unit building according to the first aspect, the beam formation of the upper floor side reinforcing beam is set substantially the same as the beam formation of the large floor beam.

  According to a third aspect of the present invention, in the unit building according to the first aspect, the beam formation of the upper floor side reinforcement beam is set longer than the beam formation of the floor large beam, and the upper floor side reinforcement beam The edge does not protrude on the floor on the upper floor side, and the lower edge of the upper floor side reinforcing beam protrudes downward from the lower edge of the floor large beam of the building unit on the upper floor side. Yes.

  According to a fourth aspect of the present invention, in the unit building according to any one of the first to third aspects, the span length of the upper floor side reinforcing beam is equal to the floor beam of the upper floor side building unit. It is set to be longer than the length that can be connected and shorter than the length of two sides of adjacent building units, and further, the upper floor side reinforcing beam is at least above the temporary column assembly removal part and near the middle part of the floor beam. It is characterized by being fixed in two places.

According to a fifth aspect of the present invention, in the unit building according to any one of the first to fourth aspects, the reinforcing beam side bracket and the floor large beam side bracket that are stacked one above the other are disposed above the gap. Or it is characterized by having fastened with the fastener from the downward side.

According to a sixth aspect of the present invention, in the unit building according to any one of the first to fifth aspects, the building unit on the lower floor side passes through the vicinity of the temporary column assembly removal portion and opposes with a predetermined gap. In the gap between the ceiling beams arranged in this way, the beam formation is set to be substantially the same as the beam formation of the ceiling beam, and in the state after assembly, it is arranged in a non-contact manner with respect to the upper-level reinforcing beam. It is characterized in that a lower-level reinforcement beam is inserted and fixed to the ceiling beam.

The present invention is claimed in claim 7, wherein, in the unit building according to claim 6, wherein a span length of the lower floor side reinforcing beam is not less than the length and the adjacent can be connected to the ceiling girder-building units of the lower floor side building It is set shorter than the length of two sides of the unit, and further, the lower floor side reinforcing beam is fixed at at least two places near the temporary column assembly removal portion and the middle portion of the ceiling beam. Yes.

  According to the first aspect of the present invention, in a unit building composed of a plurality of floors by a plurality of building units, some of the building units among the plurality of building units on the lower floor side can be detached. It has a temporary column. A plurality of building units are arranged so that these temporary pillars are adjacent to each other. In this state, the upper floor side reinforcing beam is connected so as to connect the upper floor side beams of the upper floor side building unit that are arranged to face each other with a predetermined gap passing through the upper part of the temporary column assembly removing portion in the upper floor side building unit. Is fixed to the floor girder. Thereby, the floor girder which passes above the temporary column assembly removal part of the building unit on the upper floor side is reinforced. After that, if the temporary pillars are removed from the temporary pillar assembly removal section, a unit building in which a large continuous space is formed on the lower floor side is constructed.

As described above, in the present invention, in the configuration in which the temporary column assembly removal portion is provided on the lower floor side, the upper floor side of the building unit passes through the upper portion of the temporary column assembly removal portion and is disposed to face each other with a predetermined gap. By fixing the upper floor side reinforcing beam to the floor beam so as to connect the floor beam of the floor side building unit, the load from the upper floor side building unit is prevented from entering the temporary column assembly removal portion.
According to the present invention, the upper floor side reinforcing beam is provided with a reinforcing beam side bracket whose bracket height is lower than the height of the upper floor side reinforcing beam and whose seating surface is oriented in the horizontal direction. From the girder, there is a floor girder side bracket whose bracket height is lower than the height of the floor girder and the seating surface is horizontally oriented, and by dropping the upper floor side reinforcing beam from above the gap, Since the reinforcement beam side bracket is locked to the floor large beam side bracket, the assembly position of the upper floor reinforcement beam is positioned, so the assembly work of the upper floor reinforcement beam is performed on the building unit side on the upper floor side. Can be done in a downward direction.

  According to the second aspect of the present invention, since the beam formation of the upper floor side reinforcement beam is set to be substantially the same as the beam formation of the large floor beam, the conventional structure in which the reinforcement beam having the beam formation over the upper and lower floors is installed. Compared to, the reinforcing beam is reduced in size and weight. Accordingly, there are fewer restrictions on transportation using the transport vehicle, and transportability (transport efficiency) is improved. In addition, assembling work becomes easier due to the reduction in size and weight.

  According to the third aspect of the present invention, the beam formation of the upper floor side reinforcement beam is set longer than the beam formation of the floor large beam, and the upper edge of the upper floor side reinforcement beam protrudes above the floor on the upper floor side. First, since the lower edge of the upper floor side reinforcing beam protrudes downward from the lower edge of the upper floor beam of the upper floor side building unit, the section modulus of the upper floor side reinforcing beam can be increased. Therefore, the reinforcing performance can be improved.

  According to this invention of Claim 4, the span length of the upper floor side reinforcement beam is more than the length which can connect the floor big beam of the upper floor side building unit, and is longer than the length of two sides of an adjacent building unit. In addition, the upper floor side reinforcement beam is fixed at at least two locations above the temporary column assembly removal part and near the middle part of the floor girder, so the span length connecting the outside columns of adjacent building units Compared to a conventional structure using a reinforcing beam having a size, the reinforcing beam is further reduced in size and weight.

  In addition, since the upper floor side reinforcing beams are fixed at least at two locations above the temporary column assembly removal portion and near the middle portion of the floor large beam, sufficient mounting strength can be secured.

According to the fifth aspect of the present invention, the reinforcing beam side bracket and the floor large beam side bracket, which are stacked one above the other, are fastened with the fasteners from above or below the gap so that the upper floor side reinforcing beam is connected to the floor large beam. Can be fixed to. Therefore, for example, when fastening from above the gap, the insertion direction of the upper floor side reinforcing beam and the fastening direction of the fastener are the same.

According to the sixth aspect of the present invention, in the building unit on the lower floor side, the girder is formed in the gap between the ceiling girder that is arranged to face each other with a predetermined gap passing through the vicinity of the temporary column assembly removal portion. The lower floor side reinforcement beam set to be almost the same as the beam construction of the building was inserted and fixed to the ceiling beam, so that the temporary column assembly removal part of the ceiling beam in the building unit on the lower floor where the temporary column assembly removal part is formed The neighborhood is directly reinforced.

  Moreover, in the state after assembly, the lower floor side reinforcement beams are arranged in a non-contact manner with respect to the upper floor side reinforcement beams, so the load on the upper floor side building unit is removed from the temporary column assembly of the lower floor side building unit. It is not transmitted directly to the department. Therefore, the strength of the lower floor side reinforcing beam can be reduced accordingly, and the weight of the lower floor side reinforcing beam can be reduced.

According to this invention of Claim 7, the span length of a lower floor side reinforcement beam is more than the length which can pass the temporary column assembly removal part vicinity, and two sides of the building unit adjacent to the longitudinal direction of a clearance gap Since the length is set shorter than the minute length, the reinforcing beam is further reduced in size and weight as compared with the conventional structure using the reinforcing beam having a span length that connects the outer columns of adjacent building units.

  In addition, since the lower floor side reinforcing beams are fixed at at least two locations near the temporary column assembly removal portion and near the middle portion of the ceiling beam, sufficient mounting strength can be secured.

As described above, the unit building according to the first aspect of the present invention can ensure a wide space beyond the unit boundary, and can improve the transportability and assembly workability of the reinforcing beam. Have
Moreover, the unit building according to the first aspect of the present invention can perform the assembling work of the upper floor side reinforcing beam by the downward work from the building unit side of the upper floor side. It has an excellent effect that it can be further improved.

  The unit building according to the second aspect of the present invention has an excellent effect that it is possible to improve transportability (transport efficiency) and assembly workability.

  The unit building according to the third aspect of the present invention has an excellent effect that it is possible to achieve both reduction in size and weight of the upper floor side reinforcing beam and improvement in reinforcing performance.

  The unit building according to the fourth aspect of the present invention has the excellent effect of further improving the transportability and assembly workability of the reinforcing beams because the upper floor side reinforcing beams are further reduced in size and weight. Have.

  In the unit building according to the sixth aspect of the present invention, for example, if the reinforcing beam side bracket and the floor large beam side bracket are fastened with a fastener from above the gap, the insertion direction of the upper floor side reinforcing beam and the fastener Since the fastening direction is the same, there is an excellent effect that the assembling work of the upper floor side reinforcing beams can be efficiently and quickly performed in a narrow gap.

The unit building according to the sixth aspect of the present invention has an excellent effect that the temporary column assembly removal portion can be sufficiently reinforced with the minimum necessary weight.

The unit building according to the present invention described in claim 7 has an excellent effect that the transportability and assembly workability of the reinforcing beam can be further improved because the lower-level reinforcing beam is further reduced in size and weight. Have.

  Hereinafter, an embodiment of a unit building according to the present invention will be described with reference to FIGS.

(Basic configuration)
FIG. 1 shows a basic configuration (a prerequisite configuration) of a unit building 10 according to the present embodiment. FIG. 2 shows a basic configuration of a unit building 12 according to a conventional example in comparison with FIG.

  As shown in FIG. 2, in the conventional unit building 12, a plurality of building units 14 in which frames are arranged in a box shape are arranged adjacent to each other in a wife direction and a girder direction, and a foundation 16 composed of a cloth foundation and an independent foundation. It is configured by installing them sequentially. In this case, a column aggregate portion 20 is formed in which four columns 18 arranged on the indoor center side of each building unit 14 are collected. Therefore, in the case of the conventional unit building 12, it is the structure which cannot obtain a wide space without a pillar.

  Therefore, in the unit building 10 according to the present embodiment shown in FIG. 1 (only the first floor portion 10A of the unit building 10 is shown in FIG. 1), the unit building 10 is erected at the four corners. One of the columns 32 (column arranged on the indoor center side) is divided into three parts vertically. That is, a temporary pillar 38 (see FIG. 3) is detachable between the ceiling joint portion 34 and the floor joint portion 36 by bolting or the like, so that the temporary pillar 38 can be removed in a building area. . However, in this case, since the strength of the column-less portion 40 is reduced, as described later, the gap 46 between the adjacent ceiling beams 44 of the building unit 30 of the first floor portion (lower floor side) 10A and the second floor portion (upper floor). Side) A straight type lower floor side reinforcing beam 48 and upper floor side reinforcing beam 58 are respectively inserted and fixed in a gap 56 between adjacent large floor beams 54 of the building unit 30 of 10B, thereby supplementing the strength. As a result, a column-less wide space 50 (a space surrounded by a thick line in FIG. 1) is formed on the lower floor side of the unit building 10.

  The above is the basic configuration of the unit building 10 according to the present embodiment. For convenience of explanation, names are given to the members of the building unit 30. The building unit 30 includes three normal pillars 32 arranged on the outer wall surface side of the building and a temporary pillar 38 arranged on the indoor center side, two sets of long and short ceiling beams 42 and 44 arranged in parallel to each other, A pair of long and short floor beams 52, 54 arranged vertically in parallel to the ceiling beams 42, 44 are provided, and the ends of the beams are welded to the ceiling and floor joints to form a ramen structure. It is configured as. However, the unit configuration is not limited to the above, and another box-shaped frame structure may be used.

(Time series of building units)
FIG. 3 shows the state of the building unit 60 in time series. Fig. 3 (A) shows the situation during factory assembly, Fig. 3 (B) shows the situation during transportation, and Fig. 3 (C) shows the situation during assembly of the building. Is. As shown in FIG. 3A, the building unit 60 is assembled in the factory. At this time, the temporary pillar 38 is also included. The assembled building unit 60 is transported to a building site by a transport vehicle in the state shown in FIG. At this time, the building unit 60 is transported with the temporary pillars 38 attached, so that the shape of the unit is maintained and stable transportation is possible. As shown in FIG. 3C, the building unit 60 conveyed to the building site is sequentially installed on the building site with a crane, and the straight lower floor reinforcing beam 48 and the upper floor reinforcing beam 58 are installed. Is inserted and arranged, the temporary pillar 38 is removed and the final shape is obtained.

  The building unit 60 shown in FIG. 3 is different from the building unit 30 shown in FIG. 1 in that the ceiling and floor are panelized, so that the supplementary explanation will be given briefly and the names of the members will be given again. .

  The building unit 60 shown in FIG. 3 includes a ceiling frame 62 and a floor frame 64 assembled in a rectangular frame shape, and three pillars 32 and one temporary pillar 38 are erected between them. It is the composition which becomes. The ceiling frame 62 includes ceiling joints (columns) 66 at the four corners, and ends of the ceiling beams 42 and 44 having different lengths are welded to the ceiling joint 66. Similarly, the floor frame 64 includes floor joints (columns) 68 at four corners, and the longitudinal ends of the floor beams 52 and 54 having different lengths are welded to the floor joint 68. The upper and lower ends of the pillar 32 and the temporary pillar 38 are rigidly joined by welding and temporarily fixed with bolts between the ceiling joint part 66 and the floor joint part 68 that are arranged facing each other vertically. A building unit 60 is configured. The temporary pillar 38 is fixed to the ceiling joint portion 66 and the floor joint portion 68 by bolt joints that can be removed in the building area.

(Overall configuration of unit building according to this embodiment)
FIG. 4 is an exploded perspective view showing the overall configuration of the unit building 10 according to the present embodiment. As shown in this figure, the first floor portion 10 </ b> A of the unit building 10 is configured by a total of four building units 60. In addition, although the four building units 60 are arrange | positioned adjacently, in order to make drawing easy to see, the building units 60 adjacent in the digit direction are drawn apart.

  When the building units 60 are arranged, the building units 60 are installed on the foundation 16 so that the temporary pillars 38 included in the building units 60 are arranged in the center of the building. In the state where the four building units 60 are arranged adjacent to each other, a gap 46 having the wife direction as a longitudinal direction is formed between two sets of opposed ceiling beams 44, and the lower floor side reinforcing beams are formed in the gap 46. 48 is inserted and fixed to the ceiling beam 44.

  The second floor portion 10B is configured similarly to the first floor portion 10A. However, in the second-floor portion 10B, a building unit 60 in which four normal pillars 32 that are not provided with the temporary pillars 38 are erected is used. In a state where four such building units 60 are arranged adjacent to each other, a gap 56 having the wife direction as a longitudinal direction is formed between two sets of opposing floor beams 54, and upper floor side reinforcement is formed in the gap 56. A beam 58 is inserted and fixed to the floor girder 54.

(Main part configuration: Configuration of reinforcing beams)
Next, the configuration of the reinforcing beam, which is a main part of the present embodiment, will be described in detail.

  FIG. 4 shows an exploded perspective view of the unit building 10 according to the present embodiment. FIG. 5 is a longitudinal sectional view showing a state where the unit building 10 is assembled in the unit height direction. Furthermore, the top view which looked down at the pillar-less part 40 of 10 A of 1st floor parts is shown by FIG.

  As shown in these drawings, a straight type lower floor side reinforcing beam 48 is inserted into a gap 46 formed between the ceiling large beams 44 of the first floor portion 10A. The beam formation of the lower floor side reinforcement beam 48 is set to be slightly higher than the beam formation of the ceiling large beam 44. In addition, the lower end part of the lower floor side reinforcement beam 48 is located slightly above the upper surface of the ceiling member 80 (see FIG. 5). The span length of the lower floor side reinforcing beam 48 is set to be slightly shorter than the span length of the ceiling large beam 44 and is inserted so that the middle portion in the longitudinal direction is disposed above the column-less portion 40. (See FIG. 6).

  Further, as shown in FIG. 5, a U-shaped lower floor side connection bracket 82 in a plan view is fixed to both surfaces of the central portion side and the longitudinal end portion side of the lower floor side reinforcing beam 48 by welding. Has been. The lower floor side connection bracket 82 is integrated by welding the end portions of both side portions 82A to the side surface of the lower floor side reinforcing beam 48, and in the assembled state, the center portion 82B substantially contacts the ceiling beam 44. They are arranged in contact with each other. That is, the length obtained by adding the plate thickness of the lower floor side reinforcing beam 48 and the protruding amount of the two lower floor side connection brackets 82 substantially matches the gap dimension of the gap 46 of the ceiling beams 44 arranged opposite to each other. The dimensions are set so that Note that weld nuts 84 are welded in advance at two locations on the upper and lower sides of the inner surface of the central portion 82B. Correspondingly, a bolt insertion hole is formed coaxially with the weld nut 84 in the web of the ceiling beam 44 made of channel steel, and a bolt 86 is inserted from the ceiling beam 44 side and screwed into the weld nut 84. By being combined, the lower floor side reinforcing beam 48 is fixed to the ceiling beam 44 arranged adjacent to the beam direction.

  On the other hand, a straight type upper floor side reinforcing beam 58 is inserted into a gap 56 formed between the floor large beams 54 of the second floor portion 10B. The beam formation of the upper floor side reinforcement beam 58 is set to be slightly higher than the beam formation of the floor large beam 54. Note that the upper end portion of the upper floor side reinforcement beam 58 is located slightly below the lower surface of the floor material 88. The span length of the upper floor side reinforcing beam 58 is set slightly shorter than the span length of the large floor beam 54 (the span length is the same as the span length of the lower floor side reinforcing beam 48 described above), The middle part of the direction is inserted so as to be arranged above the pillar-less part 40.

  In addition, a U-shaped upper floor side first connection bracket 90 is fixed to each of both the central portion side of the upper floor side reinforcing beam 58 and the end portion side in the longitudinal direction by welding in a side view. Further, the upper floor side first connection bracket 90 is disposed offset from the upper part of the upper floor side reinforcing beam 58. The upper floor side first connection bracket 90 is integrated by welding the end portions of both side portions 90A to the side surface of the upper floor side reinforcing beam 58, and in the assembled state, the central portion 90B becomes the floor large beam 54. It is arranged so that it is almost in contact. That is, the plate thickness of the upper floor side reinforcement beam 58 (note that the plate thickness of the upper floor side reinforcement beam 58 is set slightly smaller than the plate thickness of the lower floor side reinforcement beam 48) and the two upper floor sides. The dimension is set so that the length obtained by adding the protruding amount of the first connection bracket 90 substantially coincides with the gap dimension of the gap 56 of the floor girder 54 arranged to face each other. Note that bolt insertion holes that are coaxial with each other in the unit height direction are formed on both side portions 90A.

  Corresponding to the upper floor side first connection bracket 90 having the above-described configuration, the upper floor side second connection bracket 92 having a U-shape in a side view is fixed to the web of the floor beam 54 by welding. The protrusion amount of the upper floor side second connection bracket 92 is set to be smaller than the protrusion amount of the upper floor side first connection bracket 90. Further, the upper floor side second connection bracket 92 is disposed at the intermediate portion of the web of the floor girder 54. The upper floor side second connection bracket 92 is integrated by welding the end portions of both side portions 92A to the side surface of the floor large beam 54, and in the assembled state, the central portion 92B becomes the upper floor side reinforcing beam 58. It is arranged so as to be spaced apart in an opposed state. Further, on both side portions 92A, bolt insertion holes are formed in the unit height direction coaxially with the bolt insertion holes formed in the upper floor side first connection bracket 90. Furthermore, a weld nut 94 is welded in advance around the bolt insertion hole on the lower surface of the lower side portion 92A of the upper floor side second connection bracket 92.

  In the state after the unit is assembled, the upper surface (seat surface) of the upper side portion 92A of the upper floor side second connection bracket 92 is directed horizontally, and the upper floor side first connection bracket 90 is below the upper surface. When the lower surface of the side portion 90A comes into contact, the assembly position of the upper floor side reinforcing beam 58 is positioned. Further, when the upper floor side reinforcing beam 58 is assembled, the bolt 96 is inserted into the bolt insertion holes of the upper floor side first connection bracket 90 and the upper floor side second connection bracket 92 from above the gap 56 so as to weld. By being screwed into the nut 94, the nut is fixed to the floor beam 54. Further, in the state after the lower floor side reinforcing beam 48 and the upper floor side reinforcing beam 58 are assembled, there is a slight gap 98 between the lower end portion of the upper floor side reinforcing beam 58 and the upper end portion of the lower floor side reinforcing beam 48. The beam formation of the lower floor side reinforcing beam 48 and the upper floor side reinforcing beam 58 is set so as to be formed.

(Action / Effect)
Next, the operation and effect of this embodiment will be described.

  The unit building 10 according to the present embodiment is constructed by the following procedure.

  First, as shown in FIG. 3, the building unit 60 is transported from the factory to the building site with the provisional pillar 38, and in this state, the crane is used to sequentially place on the foundation 16 (see FIGS. 1 and 4). It will be installed. Thereby, the first floor portion 10A of the unit building 10 is constructed. At this time, the building unit 60 is arranged so that the temporary pillars 38 gather on the center side of the building. Further, in a state after the unit is installed, a predetermined gap 46 is formed between the ceiling beams 44 of the building units 60 adjacent in the girder direction.

  Next, as shown in FIG. 4, the lower floor side reinforcing beam 48 is inserted into the gap 46 between the large ceiling beams 44 of the first floor portion 10 </ b> A from the upper side (in any direction in the lower and lateral directions) and fixed. Specifically, four lower floor side connection brackets 82 are attached in advance to each side surface of the lower floor side reinforcing beam 48 at each factory, and the lower floor side reinforcing beam 48 is connected to the lower floor side of both surfaces. The weld nut 84 on the back surface of the central portion 82B of the connection bracket 82 is inserted into the gap 46 so as to be coaxial with the bolt insertion hole of the ceiling large beam 44, and the bolt 86 is screwed into the weld nut 84 from the ceiling large beam 44 side. By doing so, the lower floor side reinforcing beam 48 is fixed to the ceiling large beam 44 arranged to face each other. In addition, as described above, after the lower floor side reinforcing beam 48 is inserted into the gap 46 and fixed to the ceiling beam 44, the ceiling joint portions 34 of the column-less portion 40 are horizontally aligned by the connecting member (docking plate). Connected to each other.

  Next, the second floor portion 10B of the unit building 10 is constructed. That is, the same number of ordinary building units 60 that are not provided with the temporary pillars 38 are installed on the building unit 60 of the first floor portion 10A by the required number. In a state after the unit is installed, a predetermined gap 56 is formed between the floor beams 54 of the building units 60 adjacent in the girder direction. In addition, the upper floor side 2nd connection bracket 92 is previously attached to the outer surface of the floor big beam 54 of the building unit 60 arrange | positioned at the 2nd floor side at a factory.

  Next, as shown in FIG. 4 and FIG. 5, the upper floor side reinforcing beam 58 in which the upper floor side first connection bracket 90 is attached to both surfaces in advance at the factory in the gap 56 between the floor large beams 54 of the second floor portion 10B. Is dropped (inserted) from above. When the upper floor side reinforcing beam 58 is inserted from above the gap 56, the upper floor side first connection bracket 90 fixed to the upper floor side reinforcing beam 58 is locked to the upper floor side second connection bracket 92 of the floor large beam 54. At the same time, the assembly position of the upper floor side reinforcing beam 58 is positioned. Thereafter, the bolt 96 is screwed into the weld nut 94 from the upper side of the upper floor side first connection bracket 90, whereby the upper floor side reinforcing beam 58 is fixed to the opposed floor large beam 54.

  Thereafter, the temporary pillars 38 are sequentially removed. As a result, a continuous wide space 50 (wide span) beyond the unit boundary is formed in the first floor portion 10A.

  As described above, in the unit building 10 according to the present embodiment, in the configuration in which the column-less portion 40 is provided in the first floor portion 10A, the upper floor side reinforcing beams 58 are inserted and fixed in the gaps 56 between the large floor beams 54 of the second floor portion 10B. By doing so, the load from the building unit 60 of the second floor portion 10 </ b> B is prevented from entering the pillar-less portion 40.

  In addition, since the beam formation of the upper floor side reinforcement beam 58 is set to be substantially the same as the beam formation of the floor large beam 54, the reinforcement beam is less than the conventional structure in which the reinforcement beam having the beam formation over the upper and lower floors is installed. Smaller and lighter. Accordingly, there are fewer restrictions on transportation using the transport vehicle, and transportability (transport efficiency) is improved. In addition, assembling work becomes easier due to the reduction in size and weight.

  Summarizing the above, according to the unit building 10 according to the present embodiment, it is possible to secure a wide space 50 beyond the unit boundary, and to improve the transportability and assembly workability of the reinforcing beams.

  In addition, according to the unit building 10 which concerns on this embodiment, the effect enumerated below is acquired.

  (1) The span length of the upper floor side reinforcing beam 58 is not less than the length that allows the upper portion of the column-less portion 40 to pass (the length that allows the opposing floor beams 54 to be connected to each other) and the gap 46 Since the length is set shorter than the length of two sides of the building unit 60 adjacent in the longitudinal direction (more specifically, the span length of the upper floor side reinforcing beam 58 is set on both sides in the vicinity of the column-less portion 40 and each floor. This is set to a length that can be fixed at a total of four locations in the middle of the longitudinal direction of the girder 54), compared to the conventional structure that uses a reinforcing beam with a span length that connects the columns on the outside of adjacent building units. In addition, the reinforcing beam is further reduced in size and weight. As a result, according to the present embodiment, the transportability and assembly workability of the reinforcing beam can be further improved.

  In addition, since the upper floor side reinforcing beams 58 are fixed at a total of four places above the column-less portions 40 (on both sides in the vicinity) and the middle portion in the longitudinal direction of each floor beam 54 as described above, even if the span length is short, The mounting strength of the upper floor side reinforcing beam 58 is sufficiently secured.

  (2) The upper floor side reinforcing beam 58 is provided with an upper floor side first connection bracket 90, and the upper floor side beam 54 is provided with an upper floor side second connection bracket 92. By dropping 58 from the upper side of the gap 56, the upper floor side first connection bracket 90 is locked to the upper floor side second connection bracket 92, and the assembly position of the upper floor side reinforcing beam 58 is positioned. Therefore, the assembling work of the upper floor side reinforcing beam 58 can be performed downward from the inside of the building unit 60 of the second floor portion 10B. As a result, according to this embodiment, the workability of assembling the upper floor side reinforcing beam 58 can be further improved.

  (3) Further, the upper floor side first connection bracket 90 and the upper floor side second connection bracket 92, which are stacked one above the other, are fastened with bolts 96 and weld nuts 94 from the upper side of the gap 56, so that the upper floor side The reinforcing beam 58 can be fixed to the floor beam 54. Therefore, the insertion direction of the upper floor side reinforcing beam 58 and the fastening direction of the bolt 96 are the same. As a result, according to the present embodiment, the assembling work of the upper floor side reinforcing beam 58 in the narrow gap 56 can be performed efficiently and promptly. However, the fastening operation may be performed from the building unit side on the lower floor side.

  (4) Not only is the upper floor side reinforcing beam 58 inserted and fixed in the gap 56 between the large floor beams 54 of the second floor portion 10B, but also the lower floor side where the plate thickness is thick in the clearance 46 between the ceiling large beams 44 of the first floor portion 10A. Since the reinforcing beam 48 is inserted and fixed, that is, the reinforcing beam is divided into two parts on the upper and lower floors to be completely independent, the column-less portion 40 of the ceiling beam 44 in the first floor portion 10A where the column-less portion 40 is formed. Is directly reinforced.

  Moreover, in the state after assembly, the lower floor side reinforcing beam 48 is arranged in a non-contact manner with a slight gap 98 set against the upper floor side reinforcing beam 58, so that the load of the building unit 60 of the second floor portion 10B is reduced. It is not directly transmitted to the pillar-less portion 40 of the building unit 60 of the first floor portion 10A. Therefore, the strength of the lower floor side reinforcing beam 48 can be reduced correspondingly, and the weight of the lower floor side reinforcing beam 48 can be reduced.

  Therefore, according to the present embodiment, the column-less portion 40 can be sufficiently reinforced with the minimum necessary weight.

  (5) Further, the span length of the lower floor side reinforcing beam 48 is equal to or longer than the length that allows the column-less portion 40 to pass (the length that allows the opposing ceiling beams 44 to be connected), and the gap 46. Is set shorter than the length of two sides of the building unit 60 adjacent to each other in the longitudinal direction (more specifically, the total of both sides in the vicinity of the column-less portion 40 and the intermediate portion in the longitudinal direction of each ceiling beam 44) Because it is set to a length that can be fixed at four locations), the reinforcing beam is further reduced in size and weight compared to the conventional structure that uses a reinforcing beam with a span length that connects the outer columns of adjacent building units. The As a result, according to the present embodiment, the transportability and assembly workability of the reinforcing beam can be further improved.

  Since the lower floor side reinforcement beams 48 are fixed at a total of four locations on both sides in the vicinity of the column-less portion 40 and the longitudinal middle portion of each ceiling beam 44 as described above, even if the span length is short, the lower floor side The mounting strength of the reinforcing beam 48 is sufficiently secured.

[Supplementary explanation of this embodiment]
Below, supplementary explanation of this embodiment is given.

  (1) In this embodiment, the present invention is applied to a general house. However, the present invention is not limited to this, and other uses (commercial use, industrial use, agricultural use, non-profit such as welfare facilities / public facilities, etc.) The present invention may be used for (including intended administrative uses).

  (2) In this embodiment, the span length of the lower floor side reinforcement beam 48 and the upper floor side reinforcement beam 58 is shortened. However, the span length between the outer pillars 32 of the adjacent building units 60 is not limited to this. You may use the reinforcing beam which has.

  (3) In the present embodiment, the present invention is applied to the two-story unit building 10. However, the present invention is not limited thereto, and the present invention may be applied to a three-story unit building.

  (4) In this embodiment, the beam formation of the upper floor side reinforcement beam 58 is set to be substantially the same as the beam formation of the floor large beam 54, but not limited to this, the beam formation of the upper floor side reinforcement beam 54 It is set longer than the beam, and the upper edge of the upper floor side reinforcing beam does not protrude upward from the upper surface of the floor material 88 on the upper floor side, and the lower edge of the upper floor side reinforcing beam is the building on the upper floor side. You may make it arrange | position so that it may protrude below the lower edge (lower flange) of the floor big beam 54 of the unit 60. FIG. That is, using FIG. 5, in the embodiment shown in FIG. 5, the upper floor side beam 54 and the lower floor side ceiling beam 44 are arranged close to each other in the vertical direction. In some cases, a certain gap (for example, a space of about 200 mm) is provided between the upper floor beam 54 and the lower ceiling beam 44. In such a case, it is also possible to extend the beam formation of the upper floor side reinforcing beam downward and extend into the space. By doing so, since the section modulus of the upper floor side reinforcing beam is increased, there is a merit that the reinforcing performance of the upper floor side reinforcing beam is improved. Furthermore, if the lower-level reinforcing beam 48 is lower than the configuration shown in FIG. 5, the lower edge of the upper-level reinforcing beam is extended downward regardless of whether the above space exists. It is also possible to arrange them in a state of entering the gap between the ceiling beams 44 on the lower floor side.

It is a perspective view which shows the basic composition (premise composition) of the unit building concerning this embodiment. It is a perspective view which shows the basic composition of the unit building which concerns on a prior art example in contrast with FIG. It is a perspective view which shows the mode of the building unit shown by FIG. 1 in a time series, (A) at the time of a factory assembly, (B) at the time of transport, (C) represents the time at the time of construction site assembly, respectively. It is a disassembled perspective view which shows the whole structure of the unit building which concerns on this embodiment. It is a longitudinal cross-sectional view which shows the state which cut | disconnected the assembly state of the unit building which concerns on this embodiment in the unit height direction. It is the top view which looked down at the pillar less part of the 1st floor part of an assembly state.

Explanation of symbols

10 Unit building 10A 1st floor (lower floor)
10B Second floor part (upper floor side)
30 Building unit 32 Column 38 Temporary column 40 Column-less part (Pole assembly removal part)
44 ceiling beam 46 gap 48 lower floor reinforcement beam 50 space 54 floor beam 56 gap 58 upper floor reinforcement beam 60 building unit 90 upper floor side first connection bracket (reinforcement beam side bracket)
92 Second floor side second connection bracket (floor beam side bracket)
94 Weld Nut (Fastener)
96 bolts (fasteners)
98 Clearance

Claims (7)

In a unit building composed of a plurality of floors by a plurality of building units, a building unit composed of temporary pillars in which some of the building units of the plurality of building units on the lower floor side are removable. A unit building in which a plurality of temporary columns are arranged adjacent to each other, and a continuous space is formed on the lower floor side by forming a temporary column assembly removal part from which the temporary columns are removed. ,
The upper-floor building unit placed on the lower-floor building unit that forms the temporary-pillar assembly removal section is opposed to the lower-floor building unit above the temporary-column assembly removal section with a predetermined gap. the upper floor side reinforcing beam so as to connect the floor girder Kaigawa building units after being arranged Te secured to the floor girder,
Further, the upper floor side reinforcing beam is provided with a reinforcing beam side bracket whose bracket height is lower than the height of the upper floor side reinforcing beam and the seat surface is directed in the horizontal direction,
From the floor girder, there is provided a floor girder side bracket in which the bracket height is lower than the height of the floor girder and the seating surface is horizontally oriented,
By dropping the upper floor side reinforcing beam from the upper side of the gap, the reinforcing beam side bracket is locked to the floor large beam side bracket, and the assembly position of the upper floor side reinforcing beam is positioned.
A unit building characterized by that. The beam formation of the upper floor side reinforcing beam is set to be substantially the same as the beam formation of the floor large beam,
The unit building according to claim 1. The beam of the upper floor side reinforcing beam is set longer than the beam of the floor large beam, and the upper edge of the upper floor side reinforcing beam does not protrude on the floor of the upper floor side, and the upper floor side reinforcing beam The lower edge of the beam is arranged to protrude downward from the lower edge of the floor beam of the building unit on the upper floor side.
The unit building according to claim 1. The span length of the upper floor side reinforcing beam is set to be equal to or longer than the length capable of connecting the floor beams of the upper floor side building unit and shorter than the length of two sides of the adjacent building unit,
Furthermore, the upper floor side reinforcing beam was fixed at least two places above the temporary column assembly removal part and near the middle part of the floor beam.
The unit building according to any one of claims 1 to 3, wherein the unit building is characterized. The reinforcing beam side bracket and the floor large beam side bracket, which are stacked one above the other, are fastened with a fastener from above or below the gap,
The unit building according to any one of claims 1 to 4, wherein the unit building is characterized. In the building unit on the lower floor side, the beam formation is set to be approximately the same as the beam formation of the ceiling beam in the gap between the ceiling beams arranged in the vicinity of the temporary column assembly removal portion and facing each other with a predetermined gap. And in the state after assembly, the lower floor side reinforcing beam arranged in a non-contact manner with respect to the upper floor side reinforcing beam is inserted and fixed to the ceiling beam.
The unit building according to any one of claims 1 to 5 , wherein the unit building is characterized in that The span length of the lower floor side reinforcing beams is set to be equal to or longer than the length capable of connecting the ceiling beams of the lower floor side building units and shorter than the length of two sides of adjacent building units,
Further, the lower floor side reinforcing beams were fixed at least in two places near the temporary column assembly removal portion and the middle portion of the ceiling beam.
The unit building according to claim 6 .

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