JP5965205B2 - Building beam structure - Google Patents

Description

  The present invention relates to a beam structure of a building.

  A building such as a house has a configuration in which a ceiling portion and a floor portion are supported by a large beam connected to a pillar and a small beam connected to the large beam (for example, Patent Document 1). In this configuration, a plurality of large beams are connected to the column, and a plurality of small beams are connected to the large beam. Here, when the connection between the column and the large beam or the connection between the large beam and the small beam is made by welding, the plurality of small beams are individually welded to the large beam one by one.

JP 2011-241548 A

  Here, in a configuration in which a plurality of small beams are welded to a large beam, if it is necessary to move the small beam in accordance with a renovation of a building, etc., the welding between the large beam and the small beam is canceled to reduce the small beam. The beam is moved, and the welding work of the large beam and the small beam is performed at the movement destination. However, the welding work performed on the existing building involves a work for ensuring safety and is a large-scale work and is not realistic. Even if the beam can be welded, moving the beams one by one increases the workload and increases the number of man-hours when multiple beams need to be moved. Resulting in.

  An object of the present invention is to provide a beam structure of a building that can suitably change the positions of a plurality of small beams with respect to a large beam.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary.

  The beam structure of the building of the first invention is a beam structure of a building comprising a pair of large beams provided in parallel to each other and a plurality of small beams provided across the pair of large beams. The end portions of the plurality of small beams are connected to each other by a long connecting plate to form a small beam unit, and the connecting plate is shorter in the longitudinal direction than the beam length of the large beam. In the connecting plate, a mounting hole for mounting to the large beam is provided through the connecting plate in the thickness direction, and the pair of large beams have a plurality of holes along the longitudinal direction thereof. Through holes are provided side by side, and the small beam unit has a plate surface of the connecting plate abutting on the large beam, and one of the plurality of through holes of the large beam and the mounting hole of the connecting plate. By inserting the fixture, it is fixed to the girder. It is characterized by being defined.

  According to the first invention, since the small beam unit is formed including a plurality of small beams, the plurality of small beams can be fixed to the large beam by fixing the small beam unit to the large beam. . For this reason, compared with the case where a small beam is fixed to a large beam one by one, the work burden and work man-hour at the time of fixing a plurality of small beams to a large beam can be reduced.

  Further, in the small beam unit, since the connecting plate is overlapped on the circumferential surface of the large beam, the small beam unit can be firmly fixed to the large beam. Moreover, since the small beam unit is fixed to the large beam with a fixing tool such as a bolt, it is easy to attach and detach a plurality of small beams to the large beam. Furthermore, since the connecting plate is shorter than the beam length of the large beam, that is, the width dimension of the small beam unit is shorter than the beam length of the large beam, the small beam unit can be slid along the large beam. Thereby, in the structure which unitized the some small beam, the position change of the small beam unit with respect to a large beam can be performed easily.

  As described above, the position change of the plurality of small beams with respect to the large beam can be suitably performed.

  In the second invention, the pair of large beams are made of a steel material having a web and a flange, and the plurality of through holes are provided in at least one of the web and the flange. Are fixed to the girder in a state where the plate surface of the connecting plate is in contact with either the web or the flange.

  According to the second invention, since the through-holes are provided in the web and flange of the large beam, the connecting plate and the web and flange of the large beam can be brought into contact with each other between the plate surfaces. Thereby, the structure which penetrated the fixing tool through the attachment hole of the connecting plate and the through hole of the large beam can be realized.

  In the third invention, a groove is formed in the pair of large beams by the web and the flange, and the pair of large beams are arranged so that the respective groove portions face each other. The unit is fixed to the beam with the plate surface of the connecting plate in contact with the inner surface of the groove.

  According to the third invention, when the small beam unit is attached, the small beam unit is temporarily placed in a state where the small beam unit is placed on the lower flanges of the pair of large beams, and the position of the small beam unit is slightly lifted with respect to the large beam. The beam beam unit can be fixed. Also, when changing the beam position, after unfixing the beam unit to the beam, temporarily place the beam unit with the beam unit placed on the lower flange of the pair of beam beams. The position of the beam unit can be changed by an easy operation of moving along the lower flange.

  In the fourth invention, each small beam of the small beam unit is placed on the lower flange of the large beam in the groove portion of the large beam, and in this state, the connecting plate and the large beam are It is fixed by a fixture.

  According to the fourth invention, when the small beam unit is attached, the small beam unit can be fixed to the large beam with the small beam unit placed on the lower flanges of the pair of large beams. In this case, it is not necessary for the operator to support the beam unit by hand or the like, and the beam can be easily attached. Similarly, when changing the position of the small beam, the position can be changed by releasing the fixation of the small beam unit while the small beam unit is mounted on the lower flanges of the pair of large beams. Also in this case, it is not necessary for the operator to support the beam unit by hand or the like, and the beam changing operation can be easily performed.

  In the fifth invention, a plurality of the small beam units are arranged between the pair of large beams along the longitudinal direction of the large beams.

  According to the fifth invention, since the plurality of beam units are arranged side by side, the size of the area where no beam is present can be freely changed by changing the interval between the beam units. . Thereby, when providing an opening part in the floor part or ceiling part of a building, a change becomes easy about the position and magnitude | size of the opening part.

  In the sixth invention, the pair of large beams is made of a steel material in which a groove portion is formed by a web and a flange, and each groove portion is disposed so as to face each other, and the height dimension of the groove portion is H1, When the height dimension of the beam unit is H2, H1> H2 × 2.

  According to the sixth aspect of the present invention, the small beam units can be arranged in two upper and lower stages in the groove portion of the large beam. Therefore, the beam units that are not necessary for forming the floor and ceiling surfaces of the building can be placed above or below other beam units (ie, stacked in two upper and lower stages). The layout change of floor beams or ceiling beams can be further diversified.

  Moreover, about two small beam units provided side by side in the longitudinal direction of a pair of large beams, it is also possible to replace both of them in the longitudinal direction of the large beam.

  In 7th invention, the face material which forms a ceiling surface or a floor surface is attached to each small beam of the said small beam unit, Between the said small beams of the said small beam unit, and the said small beam unit At least one of them is provided with an opening that penetrates the face material up and down.

  According to the seventh aspect, the position and size of the opening can be easily changed by moving the small beam unit along the large beam. For example, when an opening is formed between the small beams of the small beam unit, the position of the opening can be changed by displacing the small beam unit. Further, when an opening is formed between adjacent beam units, the position and size of the opening can be changed by changing the separation distance between the beam units.

  According to an eighth aspect of the present invention, a building unit is formed that includes a plurality of columns, a ceiling beam, and a floor beam, and is applied to a unit building constructed by the building unit, and the beam unit includes the ceiling beam and the floor. At least one of the large beams is fixed to a pair of large beams which are parallel to each other.

  According to the eighth invention, in the building unit, the position of the plurality of small beams relative to the large beam can be easily changed. Therefore, at the time of new construction, the work load and work man-hour at the construction site can be reduced by using the building unit, and also the work load and work man-hour are reduced at the time of renovation such as renovation. be able to.

  In a ninth invention, the large beam has a long hole provided so as to extend along the longitudinal direction of the large beam as the through hole.

  According to the ninth aspect, the long hole-shaped through hole can be moved along the longitudinal direction of the long hole (longitudinal direction of the large beam) with the fixture inserted in the through hole. For this reason, since it is not necessary to extract a fixture from the through-hole of a large beam, the operation | work which moves a small beam unit along a large beam can be facilitated.

Perspective view of building unit Top view of the ceiling of the building unit Perspective view of the beam unit AA line sectional view of FIG. Exploded perspective view of ceiling beam and beam unit Sectional view around the ceiling as seen along the longitudinal direction of the ceiling beam Top view of the ceiling of the building unit Top view of the ceiling of another building unit Perspective view around the connection part of another beam unit and ceiling beam Cross section around another ceiling beam Perspective view of another beam unit

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In this embodiment, the building to which the present invention is applied is a unit building constructed by connecting a plurality of building units. First, the building unit will be described with reference to FIG. FIG. 1 is a perspective view of the building unit 20.

  As shown in FIG. 1, the building unit 20 includes columns 21 arranged at the four corners, a ceiling beam 22 connected to the upper end (upper end) of the column 21, and the lower end (lower end) of the column 21. The column 21, the ceiling beam 22 and the floor beam 23 form a rectangular parallelepiped skeleton (frame). The column 21 is made of a square tube-shaped square steel. Further, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are arranged toward the inside of the unit so that the groove opening sides face each other.

  In the building unit 20, a plurality of small ceiling beams 25 are bridged at predetermined intervals between a pair of large ceiling beams 22 that extend along the long side portion (girder surface) and face each other. Similarly, a plurality of floor beams 26 are bridged at a predetermined interval between a pair of large floor beams 23 that extend along the long side portion and face each other. The ceiling beam 25 and the floor beam 26 extend in parallel to the ceiling beam 22 and the floor beam 23 on the short side (wife side) at the same interval. The ceiling beam 25 and the floor beam 26 are each made of lip groove steel. A ceiling member 28 is supported by the ceiling beam 25 and a floor member 29 is supported by the floor beam 26.

  In the building unit 20 of the present embodiment, a beam unit 31 is configured including the ceiling beam 25, and the beam unit 31 is attached in a state of being bridged between a pair of ceiling beams 22 extending in parallel. As a result, the ceiling beam 25 is fixed to the ceiling beam 22.

  Here, the configuration of the beam unit 31 will be described with reference to FIGS. 2 is a plan view of the ceiling portion of the building unit 20, FIG. 3 is a perspective view of the beam unit 31, FIG. 4 is a cross-sectional view taken along the line AA in FIG. It is a disassembled perspective view. In FIG. 4, a cross section around the ceiling beam 22 that extends along the longitudinal direction of the building unit 20 is illustrated.

  As shown in FIGS. 2 and 3, the beam unit 31 includes a pair of ceiling beams 25 extending in parallel to each other and a connecting plate 32 for connecting the ceiling beams 25, and has a rectangular frame as a whole. It is formed in a shape. For example, in the beam unit 31, the ceiling beam 25 is longer than the connecting plate 32, and the beam unit 31 has a rectangular frame shape in which the direction in which the ceiling beam 25 extends is the longitudinal direction.

  Each of the pair of ceiling beams 25 is formed of channel steel having a U-shaped cross section, and is disposed in a state where the groove portions face each other. Each ceiling beam 25 has a pair of flanges extending in parallel and a web connecting the flanges, and a groove is formed by the flanges and the web. In the ceiling beam 25, the flange extends toward the inside of the beam unit 31, and the groove is open to the side.

  A pair of connecting plates 32 are provided across the ceiling beam 25 in the longitudinal direction of the ceiling beam 25. Each connecting plate 32 is a long metal plate extending along the direction in which the pair of ceiling beams 25 are arranged, and is arranged with the plate surfaces facing each other. Each connecting plate 32 is fixed to the ceiling beam 25 by welding or the like in a state where each facing surface also faces the end surface of the ceiling beam 25 and each facing surface is in contact with the end surface of the ceiling beam 25. Has been.

  A plurality of beam units 31 are arranged along the long side of the building unit 20. In each of the beam units 31, as described above, the ceiling beam 25 extends along the short side portion (the shorter ceiling beam 22) of the building unit 20, while the connecting plate 32 corresponds to the building unit 20. It extends along the long side (longer ceiling beam 22). Further, in the small beam unit 31, the width dimension of the small beam unit 31 is substantially the same as the length dimension of the connecting plate 32, and the length dimension of the connecting plate 32 is equal to the long side portion of the building unit 20. It is made smaller than the beam length of the ceiling girder 22 to be formed. In the adjacent beam units 31, the respective ceiling beam 25 is arranged in contact with or close to each other, and the ceiling beam 25 is in a state in which the outer side surfaces of the web are overlapped with each other.

  In the building unit 20, the pair of ceiling beams 22 extending along the long side portions extend in parallel to each other, and the end portions in the longitudinal direction of the respective beam units 31 enter the groove portions of the ceiling beams 22. It is out. In this case, in each small beam unit 31, each connection plate 32 is arranged in series along the longitudinal direction of the ceiling large beam 22 in the groove portion of the ceiling large beam 22, and The end portion enters the groove portion of the ceiling beam 22.

  As shown in FIG. 4, the ceiling girder 22 has a pair of flanges 22a and 22b extending in parallel and a web 22c connecting the flanges 22a and 22b, and a groove portion is formed by the flanges 22a and 22b and the web 22c. Is formed. In the ceiling girder 22, the web 22c extends in the vertical direction, and the flanges 22a and 22b extend sideways, whereby the groove portion is opened sideways.

  The small beam unit 31 enters the inside of the groove portion of the ceiling beam 22 from the open side of the groove portion, and is placed on the lower flange 22 b of the ceiling beam 22. In the small beam unit 31, the lower flange of the ceiling beam 25 is overlapped with the lower flange 22 b of the ceiling beam 22 from above, and the connecting plate 32 is a groove portion with respect to the web 22 c of the ceiling beam 22. It is stacked from the inside. In this case, the connecting plate 32 and the web 22c are in contact with each other on the plate surfaces.

  The height dimension H1 of the groove portion of the ceiling beam 22 is larger than the height dimension H2 of the beam unit 31, so that the beam unit 31 can enter the groove portion of the ceiling beam 22. Yes. Further, the height dimension (the separation distance between the upper flange 22a and the lower flange 22b) H1 of the groove portion of the ceiling beam 22 is larger than twice the height dimension H2 of the small beam unit 31 (H1> H2). × 2) In the groove portion of the ceiling girder 22, the small beam units 31 can be stacked in two upper and lower stages.

  In the small beam unit 31, the width dimension (vertical dimension) of the connecting plate 32 is the same as or slightly smaller than the height dimension of the ceiling small beam 25, and the connecting plate 32 includes the ceiling beam. It is being fixed with respect to the ceiling beam 25 in the state which does not protrude in any of upper and lower sides from 25. In this case, the height dimension of the ceiling beam 25 is the height dimension H2 of the beam unit 31. In the beam unit 31, the vertical dimension of the connecting plate 32 may be larger than the height dimension of the ceiling beam 25. In this case, the vertical dimension of the connecting plate 32 becomes the height dimension H2 of the beam unit 31.

  In the beam unit 31, the connecting plate 32 and the web 22 c of the ceiling beam 22 are bolted in a state where the plate surfaces are in contact with each other, whereby the beam unit 31 is fixed to the ceiling beam 22. Has been.

  A connecting plate hole 35 and a large beam hole 36 into which a bolt 41 as a fixture can be inserted are formed in the connecting plate 32 and the web 22c of the ceiling beam 22 respectively. The connecting plate hole 35 and the large beam hole 36 penetrate the connecting plate 32 and the web 22c in the respective thickness directions. The connecting plate hole 35 and the large beam hole 36 are opposite to the connecting plate 32 (the ceiling large beam). The bolt 41 is inserted from the side opposite to the groove portion 22, and the nut 42 is screwed to the bolt 41 from the connection plate 32 side (groove portion side of the ceiling beam 22). The bolt 41 may be inserted into the connecting plate hole 35 and the large beam hole 36 from the connecting plate 32 side.

  The connecting plate hole 35 and the large beam hole 36 are respectively formed in two upper and lower stages (two vertically arranged), the upper connecting plate hole 35 and the large beam hole 36 communicate with each other, and the lower connecting plate hole 35 and The large beam hole 36 communicates. In this case, in the connecting plate hole 35 and the large beam hole 36, the bolt 41 is inserted into the communicating holes 35, 36, and the communication and the web 22 c are fixed by the bolt 41. The connecting plate hole 35 corresponds to an attachment hole for attaching the connecting plate 32 to the ceiling beam 22, and the large beam hole 36 corresponds to a through hole provided in the ceiling beam 22.

  As shown in FIG. 5, in the connecting plate 32, a plurality of connecting plate holes 35 are arranged vertically along the longitudinal direction of the connecting plate 32 so as to form a pair in two upper and lower stages. In the web 22 c of the ceiling beam 22, the large beam hole 36 is provided in two upper and lower stages, and the upper beam hole 36 a of the upper and lower two stages is a plurality arranged in the longitudinal direction of the ceiling beam 22. The lower large beam hole 36 b is a single long hole formed so as to extend along the longitudinal direction of the ceiling large beam 22. In this case, with respect to the upper large beam hole 36a, the bolt 41 is inserted into a round hole communicating with the connection plate hole 35 of the connection plate 32 among the plurality of round holes. The bolt 41 is also inserted into one long hole.

  Here, the manufacturing procedure of the building unit 20 will be briefly described. First, a plurality of small beam units 31 are arranged in parallel, and the ceiling large beam 22 is placed on each of both end sides of each small beam unit 31 with the end of each small beam unit 31 inserted into the groove. In this state, the small beam unit 31 is bolted to the ceiling large beam 22. Then, the ceiling girder 22 to which the beam unit 31 is fixed is further connected to the upper end portion of the column 21.

  If the column 21 has a column mouth and a column body, the column mouth is fixed to the ceiling beam 22 in advance, and the column mouth is attached to the ceiling beam 22 to which the small beam unit 31 is fixed. It may be connected to the pillar body. Even in this case, the small beam unit 31 is attached to the ceiling beam 22, and then the ceiling beam 22 is attached to the column 21.

  In addition, the ceiling beam 22 may be fixed to the column 21 before the beam unit 31 is fixed to the ceiling beam 22, and then the beam unit 31 may be attached to the ceiling beam 22. In this case, since the height dimension H2 of the small beam unit 31 is equal to or less than ½ of the height dimension H1 of the groove portion of the ceiling beam 22, a gap generated above and below the beam unit 31 in the groove portion of the ceiling beam 22. Is used. Specifically, one end of the small beam unit 31 is inserted into one groove portion of the pair of ceiling large beams 22 in a state where the small beam unit 31 is tilted up and down, and then the small beam unit 31 is horizontally While shifting to the state, the other end of the small beam unit 31 is inserted into the groove portion of the other ceiling large beam 22. Thereby, the small beam unit 31 can be made into the state by which the both ends were inserted in each groove part of a pair of ceiling large beam 22. FIG.

  In the present embodiment, in the building unit 20, the plurality of beam units 31 are arranged without gaps. If there is a separated portion between the beam units 31, at least 1 is obtained by using the separated portions. The two beam units 31 can be slid along the direction in which the beam units 31 are arranged (the longitudinal direction of the ceiling beam 22 to which the beam units 31 are fixed).

  Here, the procedure for sliding the beam unit 31 will be described with reference to FIGS. FIG. 6 is a cross-sectional view of the periphery of the ceiling portion 51 viewed along the longitudinal direction of the ceiling beam 25, and FIG. 7 is a plan view of the ceiling portion 51 of the building unit 20. FIG. 7 is a view of the air conditioning duct 55 and the chamber 56 as viewed from above, in addition to the building unit 20.

  As shown in FIG. 6A, in the building unit 20, a ceiling portion 51 is formed including the ceiling surface material 28. The ceiling portion 51 includes a ceiling base material 52 such as a field edge in addition to the ceiling surface material 28. The ceiling face material 28 is disposed below the ceiling beam 25 with the ceiling foundation material 52 interposed therebetween, and is fixed to the ceiling beam 25 via the ceiling foundation material 52. The ceiling member 28 is formed of a plaster board or the like.

  In a building, a living space such as a living room or kitchen and a ceiling back space of the living space are vertically divided by a ceiling portion 51, and air conditioning air is provided in the ceiling back space (above the ceiling face material 28). An air conditioning duct 55 through which the outside air flows and a chamber 56 connected to the air conditioning duct 55 are provided. The air-conditioning duct 55 is a flexible duct formed of a synthetic resin material or a metal material in a bellows shape.

  The chamber 56 has an air conditioning port 57 that blows out and takes in air. A ceiling opening 61 that opens the ceiling member 28 is formed in the ceiling 51, and the air conditioning port 57 of the chamber 56 communicates with the living space through the ceiling opening 61. The air conditioning port 57 can supply, for example, conditioned air generated by an air conditioner such as an air conditioner or outside air taken from outside to the living space, or take in air from the living space. A grill 62 as a cover member that covers the ceiling opening 61 from below is attached to the air conditioning port 57.

  The chamber 56 and the ceiling opening 61 are disposed between the adjacent ceiling beams 25 spaced apart from each other. In other words, any one of the plurality of beam units 31 is arranged between the pair of ceiling beams 25. The chamber 56 is attached to the ceiling beam 25 via a bracket 63. In the arrangement direction of the ceiling beam 25, the width dimension of the air conditioning port 57 and the ceiling opening 61 of the chamber 56 is made smaller than the distance between the pair of ceiling beams 25 in the beam unit 31.

  Here, the chamber 56 is slid along with the beam units 31 in the direction in which the ceiling beam 25 is arranged. For example, as shown in FIG. 7A, the movement destination P of the chamber 56 is a position straddling the boundary between the small beam unit 31A to which the chamber 56 is attached and the adjacent small beam unit 31B. In this case, first, an operation for moving the beam unit 31B is performed.

  In this operation, as shown in FIG. 6B, the portion of the ceiling member 28 fixed to the beam units 31A and 31B is cut, and the ceiling base material 52 is fixed to the beam unit 31B. Remove the part that was left. Then, the small beam unit 31B is moved to a height position higher than the other small beam units 31 and is slid toward the small beam unit 31C on the side opposite to the chamber 56 while maintaining the height position. Move.

  By moving the beam unit 31B, the beam unit 31B is placed on the beam unit 31C as shown in FIG. 6C. In this case, the small beam unit 31A with the chamber 56 and the small beam unit 31C are separated by the width dimension of the small beam unit 31B. The beam unit 31B may be placed on another beam unit 31 that is further away from the beam unit 31A than the beam unit 31C.

  Thereafter, the small beam unit 31A with the chamber 56 is slid along the longitudinal direction of the ceiling large beam 22 to which the small beam unit 31 is fixed, toward the space between the small beam unit 31C. 7B, the beam unit 31A is moved to a position where the movement destination P is disposed between the pair of ceiling beams 25 while the air conditioning duct 55 is extended. Subsequently, the fixing of the beam unit 31 </ b> A by the bracket 63 is released, and the chamber 56 is slid along the ceiling beam 25 while the air conditioning duct 55 is extended. By performing the moving operation of the chamber 56, the chamber 56 is moved to the position of the movement destination P as shown in FIG.

  Thereafter, at the destination P, as shown in FIG. 6D, the chamber 56 is again fixed to the beam unit 31A by the bracket 63, and a new ceiling surface material is removed at the portion where the ceiling surface material 28 is cut off. 68 is attached to the other beam units 31 including the beam unit 31A and the beam unit 31C. In this case, a ceiling opening 61 is also formed in the newly installed ceiling member 68 in accordance with the air conditioning opening 57 of the chamber 56, and the grill 62 is attached to the air conditioning opening 57 so as to cover the ceiling opening 61 from below. Even in this case, the ceiling opening 61 is disposed between the pair of ceiling beams 25 in the beam unit 31A.

  Since the beam units 31 can be stacked in two upper and lower stages in the groove portion of the ceiling beam 22, the beam unit 31 B that has become unnecessary as described above is placed on the other beam units 31. In addition to this, the positions of the beam units 31 can be interchanged. For example, the small beam unit 31A is moved to the upper position, is moved to the small beam units 31B and 31C with the height position, and is temporarily placed at a position passing over the small beam units 31B and 31C. Then, the small beam unit 31B and the small beam unit 31C are moved to the side that has become an empty space by moving the small beam unit 31A, and separated from the small beam unit 31B across the small beam unit 31C. A part is formed, and the beam unit 31A is moved to the separated part. Thereby, the chamber 56 can be moved together with the beam units 31A without removing the chamber 56 from the beam units 31A.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  Since the small beam unit 31 is formed including the pair of ceiling beams 25, the plurality of ceiling beams 25 can be fixed to the ceiling beam 22 by fixing the beam units 31 to the ceiling beam 22. Can do. For this reason, compared with the case where the ceiling beam 25 is fixed to the ceiling beam 22 one by one, the work load and the work man-hour when the plurality of ceiling beams 25 are fixed to the ceiling beam 22 can be reduced.

  Further, in the small beam unit 31, since the connecting plate 32 is overlapped on the peripheral surface of the ceiling large beam 22 (inner peripheral surface of the groove), the small beam unit 31 can be firmly fixed to the ceiling large beam 22. it can. Moreover, since the small beam unit 31 is fixed to the ceiling large beam 22 by the bolt 41, it becomes easy to attach and detach the plurality of ceiling small beams 25 to the ceiling large beam 22 collectively. Furthermore, since the width dimension of the small beam unit 31 is shorter than the beam length of the ceiling large beam 22, the small beam unit 31 can be slid along the ceiling large beam 22. Thereby, in the structure which united the several ceiling beam 25, the position change of the beam unit 31 with respect to the ceiling beam 22 can be performed easily.

  As described above, the position of the plurality of ceiling beams 25 can be suitably changed with respect to the ceiling beam 22.

  In the configuration in which the large beam hole 36 is formed in the web 22c of the ceiling large beam 22 and the connection plate hole 35 is formed in the connection plate 32, the connection plate 32 is overlapped with the web 22c. The bolt 41 can be inserted into the connecting plate hole 35 and the large beam hole 36. Thereby, the web 22c of the ceiling large beam 22 and the connecting plate 32 of the small beam unit 31 can be bolted.

  Since the end portion of the small beam unit 31 enters the groove portion of the ceiling large beam 22, the end portion of the small beam unit 31 is inserted into the groove portion of the ceiling large beam 22 when the small beam unit 31 is attached. At the same time, it is possible to temporarily place the beam on the lower flange 22b of the ceiling beam 22 and then fix the beam unit 31 to the ceiling beam 22 at that position or slightly lifted position. Further, when the position of the ceiling beam 25 is changed, after the bolt fixing of the beam unit 31 to the ceiling beam 22 is released, the beam unit 31 is moved to the lower flange 22b in the groove portion of the ceiling beam 22. The position of the small beam unit 31 can be changed by an easy operation of temporarily placing it on and then moving along the lower flange 22b of the ceiling girder 22.

  Since the small beam unit 31 is placed on the lower flange 22b in the groove portion of the ceiling large beam 22 and its connecting plate 32 is fixed to the web 22c of the ceiling large beam 22, When the beam unit 31 is fixed, it is not necessary to support the beam unit 31 by hand. For this reason, the work of attaching the ceiling beam 25 to the ceiling beam 22 can be facilitated. Further, when the position of the ceiling beam 25 is changed, the operator does not need to support the beam unit 31 by hand, and the fixing of the beam unit 31 by the bolt 41 is released. The position can be changed. For this reason, the movement work of the ceiling beam 25 can be facilitated.

  Further, for example, when the beam unit 31 is fixed to the ceiling beam 22 at a position spaced upward from the lower flange 22b of the ceiling beam 22, the beam unit 31 is temporarily placed on the lower flange 22b. After placing, the fixing work to the ceiling beam 22 is performed in a state where the small beam unit 31 is lifted upward, and the work load is considered to be large. On the other hand, in the present embodiment, it is not necessary to lift the beam unit 31 upward during the fixing operation, so that the work burden can be reduced.

  Since the large beam hole 36 for fixing the small beam unit 31 to the bolt in the ceiling large beam 22 is formed in the web 22c, the bolt 41 is not projected above or below the large ceiling beam 22 and the small beam unit 31 is mounted on the ceiling. It can be fixed to the girder 22. For example, when the large beam hole 36 is formed in the lower flange 22b in the ceiling large beam 22, the tip or the head of the bolt 41 protrudes below the lower flange 22b, and the ceiling face material 28 is connected to the ceiling large beam 22 or the small ceiling beam. When attaching to the lower side of the beam 25, there is a concern that the tip or the head of the bolt 41 may become an obstacle. On the other hand, in this embodiment, since the large beam hole 36 is formed in the web 22c of the ceiling large beam 22, the said concern can be eliminated.

  In the configuration in which the connecting plate 32 of the small beam unit 31 is fixed to the web 22c of the ceiling beam 22 by the upper and lower two-stage bolts 41, the lower stage of the upper and lower two-stage large beam holes 36a and 36b is a long hole. Therefore, when the left and right positions of the upper connecting plate hole 35 and the large beam hole 36a are aligned with the small beam unit 31 placed on the lower flange 22b of the ceiling large beam 22, the lower The bolts 41 can be inserted into both the upper and lower two stages without performing the horizontal alignment of the connecting plate hole 35 and the large beam hole 36b. For this reason, the operation | work which fixes the small beam unit 31 and the ceiling large beam 22 with the volt | bolt 41 can be facilitated.

  Moreover, even if the bolt 41 is not removed from the long beam hole 36b, which is a long hole, the connecting plate 32 is placed in the longitudinal direction of the ceiling large beam 22 while the bolt 41 is inserted into the large beam hole 36b and the connecting plate hole 35. Can be moved along. Thereby, the operation | work which moves the beam unit 31 can be made easy.

  Since the small beam unit 31 is formed in a rectangular frame shape as a whole, when the small beam unit 31 is slid along the ceiling large beam 22, the longitudinal direction of the ceiling large beam 22 and the longitudinal direction of the connecting plate 32 are Therefore, the moving direction of the small beam unit 31 is not easily deviated from the longitudinal direction of the large ceiling beam 22. In this case, since the detachment of the beam unit 31 from the groove portion of the ceiling beam 22 is restricted by the length of the connecting plate 32, the operator simply presses the beam unit 31 to the side on which the beam unit 31 is moved. The beam unit 31 can be moved by an easy operation. On the other hand, for example, when the ceiling beam 25 is moved one by one along the ceiling beam 22, the movement direction of the ceiling beam 25 is easily shifted from the longitudinal direction of the ceiling beam 22. The problem that it is easy to detach | leave from the groove part of 22 will arise.

  In the building unit 20, since the plurality of beam units 31 are arranged side by side, the distance between the beam units 31, that is, the ceiling beam 25, can be increased by moving the adjacent beam units 31 closer to or away from each other. Can be freely changed. As a result, in the configuration in which the ceiling opening 61 is formed in the ceiling 51 of the building, the position and size of the ceiling opening 61 can be easily achieved by moving the beam unit 31 along the ceiling beam 22. Can be changed.

  In addition, since the relationship between the height dimension H1 of the groove portion of the ceiling girder 22 and the height dimension H2 of the small beam unit 31 is H1> H2 × 2, the small beam unit 31 is connected to the groove portion of the ceiling large beam 22. It can be stacked in two upper and lower stages. For this reason, when there is a small beam unit 31 that is not necessary for forming the ceiling portion 51, the small beam unit 31 can be arranged above the other small beam units 31. Thereby, the arrangement change of the ceiling beam 25 can be further diversified.

  In addition, the small beam unit 31 is temporarily placed on the upper side of the other small beam units 31, and in this state, another small beam unit 31 is moved to empty the temporarily placed small beam unit 31. By installing in the space, the positions of the beam units 31 can be interchanged.

  Since the building unit 20 includes the beam unit 31, the position of the ceiling beam 25 can be easily changed. Therefore, the work load and work man-hours at the construction site can be reduced by using the building unit 20 at the time of new construction, as well as the work load and work man-hours at the time of renovation such as renovation. be able to.

[Other Embodiments]
The present invention is not limited to the description of the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the plurality of beam units 31 are arranged without gaps, but the beam units 31 may be arranged with a predetermined interval. For example, as shown in FIG. 8A, the plurality of beam units 31 are arranged such that the distance between the ceiling beam 25 in the beam unit 31 is the same as the distance between adjacent beam units 31. Are arranged. Even in this configuration, the ceiling beam 25 can be arranged so as not to be dense.

  Further, the ceiling opening 61 may be disposed between the adjacent beam units 31 instead of between the pair of ceiling beams 25 in the beam unit 31. Even in this case, the chamber 56 can be installed in the ceiling opening 61. The chamber 56 is preferably fixed to the respective beam units 31 arranged on both sides thereof by brackets 63 or the like.

  Further, since there is a separation portion between adjacent beam units 31, the beam unit 31 is moved toward the separation portion without overlapping the beam units 31 in two stages as in the above embodiment. Only the distance between the beam units 31 can be changed.

  For example, when the ceiling opening 61 is disposed between the beam units 31, the size and shape of the ceiling opening 61 can be changed by increasing or decreasing the separation distance between the beam units 31. It becomes possible. For this reason, as shown in FIGS. 8 (a) and 8 (b), by moving at least one of the small beam units 31 in a direction away from the other with respect to the adjacent small beam units 31 across the ceiling opening 61. The width dimension of the ceiling opening 61 between the beam units 31 (the length dimension in the direction in which the ceiling beam 25 is arranged) can be increased.

  (2) In the above embodiment, the connecting plate 32 is fixed to the end surface of the ceiling beam 25 in the beam unit 31, but the connecting plate 32 may be fixed to the lower surface and the upper surface of the ceiling beam 25. Good. For example, as shown in FIG. 9, at the end of the beam unit 31, the connection plate 32 is disposed below the ceiling beam 25 with the plate surface facing the vertical direction. In a state where the plate surface and the lower surface of the ceiling beam 25 are in contact with each other, the connecting plate 32 and the ceiling beam 25 are connected by welding or the like.

  Also in this configuration, the end portion of the small beam unit 31 enters the groove portion of the ceiling large beam 22. In this case, each ceiling beam 25 of the beam unit 31 is placed on the lower flange 22b of the ceiling beam 22 across the connecting plate 32, and the connecting plate 32 overlaps the upper surface of the lower flange 22b. It has been. In the ceiling girder 22, a plurality of girder holes 36 are formed not in the web 22c but in the lower flange 22b. These girder holes 36 are formed in the longitudinal direction of the ceiling girder 22 in the same manner as the large beam holes 36a in the above-described embodiment. They are arranged at predetermined intervals. The connecting plate hole 35 of the connecting plate 32 communicates with any one of the plurality of large beam holes 36 in the vertical direction, and the bolt 41 is inserted into the communicating connecting plate hole 35 and the large beam hole 36, whereby the small beam A unit 31 is fixed to the ceiling beam 22.

  In the beam unit 31, the connecting plate 32 may be fixed to opposing surfaces of the pair of ceiling beams 25 facing each other. For example, the end face of the connection plate 32 is fixed to the inner side surface of the web 22c of the ceiling beam 25 by welding or the like in a state where the connection plate 32 is inserted into the groove portion of the ceiling beam 25. Even in this case, if the outer plate surface of the connection plate 32 and the end surface of the ceiling beam 25 are flush with each other at the fixed portion between the ceiling beam 25 and the connection plate 32, the outer plate surface of the connection plate 32 is A part of the peripheral surface of the rectangular frame-shaped small beam unit 31 can be formed. Thereby, even if the connecting plate 32 is fixed to the facing surface of the ceiling beam 25, the outer plate surface of the connecting plate 32 is brought into contact with the inner surface of the web 22c of the ceiling beam 22 as in the above embodiment. Can do.

  (3) In the above embodiment, the connecting plate 32 of the small beam unit 31 is in contact with the inner surface of the web 22 c of the ceiling beam 22, but the connecting plate 32 is in contact with the inner surface of the groove portion of the ceiling beam 22. What is necessary is just to contact | abut to the lower surface of the upper side flange 22a, and the upper surface of the lower side flange 22b. In the small beam unit 31, the connecting plate 32 only needs to enter the groove portion of the ceiling large beam 22, and the ceiling small beam 25 does not have to enter the groove portion of the ceiling large beam 22. For example, in the longitudinal direction of the ceiling beam 25, the connecting plate 32 is provided so as to extend outward from the end surface of the ceiling beam 25 in a state where the plate surface is directed up and down. The structure currently fixed in the state piled up on the upper surface of 22 lower flange 22b is mentioned.

  (4) In the above embodiment, the small beam unit 31 is inserted into the groove portion of the ceiling large beam 22, but the small beam unit 31 may be disposed on the upper side or the lower side of the ceiling large beam 22. For example, as in (2) above, a configuration in which the beam unit 31 in which the connecting plate 32 is disposed below the ceiling beam 25 is placed on the upper surface of the upper flange 22 a of the ceiling beam 22. And Even in this case, if the large beam hole 36 is formed in the upper flange 22a, the connection plate 32 can be bolted to the upper flange 22a using the large beam hole 36 and the connection plate hole 35.

  (5) In the above embodiment, the ceiling girder 22 is made of channel steel. However, if the girder such as the ceiling girder 22 has a web and a flange that form a groove, the lip-shaped channel steel ( C-shaped steel) or steel materials such as H-shaped steel. Further, the large beam may be formed of a steel material such as a Z-shaped steel or an L-shaped steel even if the groove is not formed by a web, a flange, or the like. Even in this case, as described in the above (4), the small beam unit 31 can be fixed to the upper surface and the lower surface of the large beam.

  (6) In the above embodiment, the beam unit 31 is formed including the ceiling beam 25, but the beam unit may be formed including the floor beam 26. For example, a pair of floor beams 26 extending in parallel is connected by a connecting plate 32 so that the beam unit 31 is formed.

  In this configuration, as shown in FIG. 10, the small beam unit 31 is inserted into the groove portion of the floor large beam 23, and the upper surface of the floor small beam 26 is in contact with the lower surface of the upper flange 23 a of the floor large beam 23. At the same time, the connecting plate 32 is in contact with the inner surface of the web 23 c of the floor girder 23. The large beam hole 36 is formed in the web 23c of the floor large beam 23, and the small beam unit 31 is inserted into the connection plate hole 35 of the connection plate 32 and the large beam hole 36 of the web 23c so that the small beam unit 31 is connected to the floor large beam 23. It is fixed against.

  The large beam hole 36 may be formed in one step as described above, or may be formed in three or more steps. In the above embodiment, the upper large beam hole 36a is a plurality of round holes and the lower large beam hole 36b is a long hole. However, either the upper large beam hole 36a or the lower large beam hole 36b is a round hole. Or it may be a long hole. A plurality of large beam holes 36 may be arranged along the longitudinal direction of the large beam in a state where non-long holes such as round holes and long holes are mixed.

  Since the small beam unit 31 is in contact with the upper flange 23 a in the groove portion of the floor large beam 23, the high positions of the upper surfaces of the floor small beam 26 and the floor large beam 23 become substantially the same. For this reason, in the configuration in which the floor member 29 is installed on the floor beam 26 with a floor base material such as joists, the beam unit 31 is placed on the lower flange 23b of the floor beam 23. The thickness dimension of the floor base material can be reduced as compared with the configuration.

  The girder may be a beam material connected to the column 21 such as the ceiling girder 22 or the floor girder 23, and the girder is a beam connected to the girder such as the ceiling girder 25 or the floor girder 26. Any material can be used.

  Further, the small beam unit 31 can be moved downward in the groove portion of the floor large beam 23 by releasing the bolt fixing to the floor large beam 23. Even in this case, it is possible to stack the beam units 31 in two upper and lower stages by stacking the moved beam units 31 below the other beam units 31. Therefore, it is possible to move the small beam unit 31 along the ceiling large beam 22 and to exchange the positions of the small beam units 31.

  (7) The beam unit may include three or more beam beams such as the ceiling beam 25. Even in this case, since three or more small beams are connected by the connecting plate 32, the small beams can be collectively fixed to the large beam such as the ceiling large beam 22 via the connecting plate 32.

  Further, in the small beam unit, the small beams may be arranged so that the groove portions are in the same direction, and each small beam may be formed of a steel material that does not have the groove portions.

  (8) In the beam unit 31, the connection plate 32 only needs to have a plate portion extending along the direction in which the ceiling beam 25 is arranged. For example, the connection plate 32 is formed of a steel material such as channel steel. It may be. Even in this case, the grooved steel flange, web, or the like serves as a connecting plate for connecting the pair of ceiling beams 25.

  (9) In the above embodiment, the relationship between the height dimension H1 of the groove portion of the ceiling beam 22 and the height dimension H2 of the small beam unit 31 is H1> H2 × 2, but H2 <H1 < It may be H2 × 2. That is, as long as the small beam unit 31 can be inserted into the groove portion of the ceiling large beam 22, the small beam unit 31 does not have to be stacked in the upper and lower stages in the groove portion of the ceiling large beam 22.

  (10) As shown in FIG. 11, the beam unit 31 may be provided with a reinforcing member 75 that connects the pair of ceiling beams 25 at an intermediate position in the longitudinal direction of the ceiling beam 25. The reinforcing member 75 is formed in a long shape with a channel steel having a U-shaped cross section, and an end plate 76 extending in the short direction of the reinforcing member 75 is attached to an end portion in the longitudinal direction. The reinforcing member 75 is spanned between the pair of ceiling beams 25, and each end portion enters the groove portion of the ceiling beam 25.

  In the groove portion of the ceiling beam 25, the end plate 76 of the reinforcing member 75 is overlapped with the inner surface of the web of the ceiling beam 25, and the end plate 76 and the web are bolted. Bolt holes 77 are formed in the end plate 76, and bolt holes 78 are formed in the web of the ceiling beam 25. In the web of the ceiling beam 25, a plurality of bolt holes 78 are arranged along the longitudinal direction of the ceiling beam 25, and one of these bolt holes 78 communicates with the bolt hole 77 of the end plate 76. Bolts (not shown) are inserted through the bolt holes 77 and 78. In this case, it is possible to move the reinforcing member 75 along the longitudinal direction of the ceiling beam 25 by releasing the bolt fixing, and the reinforcing member 75 is located at a position where the bolt holes 77 and 78 communicate with each other even at the moving destination. By arranging, the reinforcing member 75 can be bolted to the ceiling beam 25.

  In the ceiling beam 25 provided with the reinforcing member 75, when the ceiling opening 61 is formed between the pair of ceiling beams 25, the reinforcing member 75 is extended so as to extend along the ceiling opening 61. By arranging and fixing the ceiling base material 52 and the ceiling surface material 28 to the reinforcing member 75, it is possible to suppress a decrease in the support strength of the ceiling portion 51 around the ceiling opening 61.

  Further, when the beam unit is formed including the floor beam 26, the reinforcing member 75 is attached to the beam unit, and the floor member 29 is supported from below by the reinforcing member 75. Support strength of (floor part) can be increased. Accordingly, when a heavy object such as furniture is placed on the floor, the heavy object can be suitably supported by the reinforcing member 75 by setting the placement location above the reinforcing member 75.

  (11) The fixture that fixes the small beam unit 31 to the ceiling beam 22 may be not the bolt 44 as long as it can be inserted into the connection plate hole 35 of the connection plate 32 and the large beam hole 36 of the ceiling beam 22. Further, it may be a rod-like or pin-like member.

  (12) In the above embodiment, the configuration in which the beam unit 31 is fixed to the beam such as the ceiling beam 22 is realized in the building unit 20 forming the unit type building, but the beam unit is fixed to the beam. As long as it has a pair of large beams provided in parallel to each other, the configuration may be realized in a building constructed by a steel frame assembling method or a wooden conventional method.

  DESCRIPTION OF SYMBOLS 20 ... Building unit, 22 ... Ceiling girder as large beam, 22a ... Upper flange as flange, 22b ... Lower flange as flange, 22c ... Web, 25 ... Ceiling girder as small beam, 28 ... Ceiling surface material, DESCRIPTION OF SYMBOLS 31 ... Small beam unit, 32 ... Connecting plate, 35 ... Connecting plate hole as attachment hole, 36 ... Large beam hole as through-hole, 36b ... Large beam hole as long hole, 41 ... Bolt as fixing tool, 61 ... Opening Ceiling opening as part.

Claims (8)

A beam structure of a building comprising a pair of large beams provided in parallel to each other and a plurality of small beams provided across the pair of large beams,
A small beam unit is configured by connecting ends of the plurality of small beams with a long connecting plate,
The connecting plate is shorter in the longitudinal direction than the beam length of the large beam,
In the connection plate, an attachment hole for attachment to the girder is provided through the connection plate in the thickness direction,
The pair of large beams is made of a steel material having a web and a flange,
In the pair of large beams, a plurality of through holes are arranged in the longitudinal direction of the large beam in at least one of the web and the flange ,
The small beam unit is fixed to one of the plurality of through holes of the large beam and the mounting hole of the connecting plate in a state where the plate surface of the connecting plate is in contact with either the web or the flange. A beam structure of a building which is fixed with respect to the girder by being inserted. In the pair of large beams, a groove is formed by the web and the flange,
The pair of large beams are arranged so that the respective groove portions face each other,
The building beam structure according to claim 1 , wherein the small beam unit is fixed to the large beam in a state where a plate surface of the connecting plate is in contact with an inner surface of the groove portion. Each small beam of the small beam unit is placed on the lower flange of the large beam in the groove portion of the large beam, and in this state, the connecting plate and the large beam are fixed by the fixture. The building beam structure according to claim 2 . The building beam structure according to any one of claims 1 to 3 , wherein a plurality of the small beam units are arranged between the pair of large beams along a longitudinal direction of the large beam. The pair of large beams is made of a steel material in which a groove is formed by a web and a flange, and each groove is disposed so as to face each other.
When the height dimension of the groove is H1, and the height dimension of the beam unit is H2,
H1> H2 × 2,
The building beam structure according to claim 4 . A face material that forms a ceiling surface or a floor surface is attached to each beam of the beam unit.
The joists unit of the joists between the adjacent, and at least one of between the adjacent said joists unit, any one of claims 1 to 5 is provided with an opening which penetrates the surface material down Beam structure of the building described in 1. It is equipped with a building unit formed by a plurality of pillars, ceiling beams and floor beams, and is applied to unit buildings constructed by this building unit.
The beam structure of the building according to any one of claims 1 to 6 , wherein the small beam unit is fixed to a pair of large beams parallel to each other in at least one of the ceiling large beam and the floor large beam. The beam structure of a building according to any one of claims 1 to 7 , wherein the large beam has a long hole provided as the through hole so as to extend along a longitudinal direction of the large beam.

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