JP2015117502A - Ceiling structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling structure of a building capable of restraining the occurrence of wrinkles and a cut in ceiling cloth, without increasing the number of part items.SOLUTION: The building is constituted by combining a plurality of building units 20. A ceiling joist 33 is fixed to respective under surfaces on adjacent respective ceiling girders 22 of the adjacent building unit 20. The ceiling joist 33 is provided along the ceiling girders 22, and is formed wider than the ceiling girders 22. Adjacent upper side ceiling face bar 27 and upper side ceiling tying face bar 37 are respectively fixed to the under surface side of the ceiling joist 33. Adjacent lower side ceiling face bar 28 and lower side ceiling tying face bar 38 are fixed to the under surface side of the ceiling joist 33 in a state of dislocating a mutual boundary part in the ceiling juxtaposition direction to a boundary part between the adjacent upper side ceiling face bar 27 and the upper side ceiling tying face bar 37.

Description

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

  In unit-type buildings, the ceiling structure of the building unit is to install a field edge along the ceiling beam on the bottom surface of each ceiling beam and ceiling beam of the building unit, and use a screw or the like as the ceiling material on the bottom surface of these field edges. A fixing structure is often used. The field edge is formed of, for example, long wood and is formed with the same width as the ceiling beam to which the field edge is attached.

  For example, a gypsum board is used as the ceiling surface material. The ceiling surface material may be provided in a state where two upper and lower surfaces are stacked (see, for example, Patent Document 1). In that case, an upper ceiling surface material (hereinafter referred to as an upper ceiling surface material) and a lower ceiling surface material ( Hereinafter, the lower ceiling surface material) is arranged in parallel along the same direction, for example, the longitudinal direction of the building unit. Then, each upper ceiling member and each lower ceiling member are fixed with screws or the like on the lower surface side of the field edge extending along the boundary portion between the adjacent upper ceiling members (or lower ceiling members), for example. The In addition, a ceiling cloth is attached to the lower surface of each lower ceiling member with an adhesive across the lower surfaces. Note that the upper ceiling member and the lower ceiling member are assembled in advance in the building unit in the unit manufacturing factory.

  In such a ceiling structure, there are cases where the upper ceiling member and the lower ceiling member are shifted from each other in the direction in which the ceiling members are arranged (the ceiling arrangement direction). In this case, the adjacent upper ceiling surface material and the adjacent lower ceiling surface material are fixed to different field edges at the respective boundary portions. In such a configuration, since the adjacent lower ceiling surface materials are respectively arranged on the lower surface side of the one upper ceiling surface material, it is possible to make it difficult for vertical displacement between the lower ceiling surface materials to occur. Therefore, it is possible to suppress the occurrence of breaks and wrinkles in the ceiling cross due to such a shift at the boundary portion of each lower ceiling member.

  At the boundary between adjacent building units, an upper ceiling joint is provided between the upper ceiling members of the adjacent building units, and the lower ceiling joint is provided between the lower ceiling members of the adjacent building units. Is provided. Each of the upper ceiling joint material and the lower ceiling joint material is assembled between each upper ceiling member and each lower ceiling member after each building unit is installed at the construction site. The upper ceiling joint material and the lower ceiling joint material are respectively disposed across the field edges fixed to the lower surfaces of adjacent ceiling beams of adjacent building units, and screws are provided on the lower surface side of each field edge. Fixed with etc. Therefore, the upper ceiling joint material and the upper ceiling surface material are fixed to each other on the lower surface side of the field edge under the ceiling beam, and the lower ceiling joint material and the lower ceiling surface material are provided. They are fixed next to each other.

JP 2010-126945 A

  By the way, in the above configuration in which the upper ceiling connecting material and the upper ceiling surface material adjacent to the field edge under the ceiling beam and the adjacent lower ceiling connecting material and the lower ceiling surface material are respectively fixed, the adjacent upper ceiling It becomes difficult to dispose the boundary portion between the face material and the upper ceiling joint material and the boundary portion between the adjacent lower ceiling surface material and the lower ceiling joint material in the ceiling arrangement direction. Therefore, in the state in which these boundary portions are aligned at the same position in the ceiling arrangement direction, the adjacent upper ceiling surface material and upper ceiling connecting material, and the adjacent lower ceiling surface material and lower ceiling connecting material are field edges. It is possible to be fixed to. In that case, a vertical shift occurs between the adjacent lower ceiling surface material and the lower ceiling joint material (and between the adjacent upper ceiling surface material and the upper ceiling joint material), and the ceiling cloth is wrinkled. There is a risk of breakage.

  Therefore, as a countermeasure, it is conceivable to newly provide a new field edge at a position that is lined up inside the unit with respect to the field edge under the ceiling beam. The field edge is provided, for example, between two field edges extending in a direction orthogonal to the field edge and facing each other. In this case, the adjacent upper ceiling surface material and the upper ceiling joint material are respectively fixed to the field edge under the ceiling beam, and the adjacent lower ceiling surface material and the lower ceiling joint material are newly provided to the field edge. By fixing, the boundary part of the adjacent upper ceiling surface material and the upper ceiling connecting material and the boundary part of the adjacent lower ceiling surface material and the lower ceiling connecting material can be shifted in the ceiling arrangement direction. Therefore, it is possible to prevent the ceiling cloth from being wrinkled or cut.

  However, if a new field edge is provided, the number of parts increases accordingly, which may increase the number of manufacturing steps and the cost of members. In particular, when a new field edge is provided at the boundary between adjacent building units with their girder faces facing each other, it is necessary to provide a new field edge between the field edges under adjacent ceiling beams. Therefore, there is a risk that the number of parts will increase significantly.

  The present invention has been made in view of the above circumstances, and mainly aims to provide a ceiling structure of a building that can suppress the occurrence of wrinkles and cuts in the ceiling cloth without increasing the number of parts. It is the purpose.

  In order to solve the above problems, the ceiling structure of the building of the first invention is fixed to a plurality of ceiling beams arranged side by side and the lower surface of each ceiling beam, and extends along the longitudinal direction of the ceiling beam. A plurality of field edges, a plurality of first ceiling surface materials arranged in parallel in the direction in which the field edges are arranged below each field edge, and respectively fixed to the field edges, and the first ceiling surface material A plurality of second ceiling surface materials arranged in parallel in the ceiling arrangement direction in which the respective first ceiling surface materials are arranged on the lower surface side of the first ceiling surface materials, and fixed to the field edges via the first ceiling surface materials, respectively, A ceiling cross provided across the lower surface of the second ceiling surface material, wherein at least one of the field edges is fixed to the field edge It is a wide field edge wider than the ceiling beam, on the lower surface side of the wide field edge The adjacent first ceiling members are fixed to each other, and the adjacent second ceiling members are arranged in the ceiling arrangement direction with respect to the boundary portions of the adjacent first ceiling members. It is characterized by being fixed in a shifted state.

  According to the present invention, on the lower surface side of the wide field edge that is wider than the ceiling beam, the adjacent first ceiling surface material and the adjacent second ceiling surface material are arranged so that their boundary portions are aligned in the ceiling arrangement direction. It is fixed in a shifted state. In this case, since the adjacent second ceiling surface materials are respectively arranged on the lower surface side of the one first ceiling surface material, it is possible to make it difficult for vertical displacement between these second ceiling surface materials to occur. . Therefore, it is possible to prevent the ceiling cloth from being cut or wrinkled at the boundary between the adjacent second ceiling members.

  Moreover, since the adjacent first ceiling surface material and the adjacent second ceiling surface material are fixed to a common field edge (wide field edge), the second ceiling surface adjacent to the adjacent first ceiling surface material. Unlike the case where the material is fixed to different field edges, there is no need to provide a new field edge. As a result, it is possible to suppress the occurrence of wrinkles or breaks in the ceiling cloth without increasing the number of parts.

  The first ceiling surface material and the second ceiling surface material are fixed to the field edge by hitting a fixing tool such as a screw or a nail from below. In this case, the fixing tool (first fixing tool) for fixing the first ceiling surface material is struck to the field edge while penetrating the first ceiling surface material. Moreover, the fixing tool (second fixing tool) for fixing the second ceiling surface material is driven against the field edge in a state of penetrating both the first ceiling surface material and the second ceiling surface material.

  The ceiling structure of the building of the second invention is applied to a unit type building constructed by combining a plurality of building units each having a floor girder, a ceiling girder and a column in the first invention. The adjacent ceiling beams in the matching building unit are the plurality of ceiling beams arranged side by side, and the wide field edges that are wider than the ceiling beams are fixed to the lower surfaces of the ceiling beams. Below the wide field edges, the plurality of first ceiling surface materials are juxtaposed with the direction in which the wide field edges are arranged as the ceiling arrangement direction, and the plurality of second ceiling surface materials are arranged in parallel. The plurality of first ceiling members include a first unit ceiling member provided in each of the adjacent building units, and a first unit ceiling member of each of the adjacent building units. In between A plurality of second ceiling surface materials, the second unit ceiling surface material provided in each of the adjacent building units, and the adjacent building. A second ceiling connecting surface material provided between each second unit ceiling surface material of the unit, and on the lower surface side of the wide field edge, the adjacent first unit ceiling surface material and the first 1 ceiling connection surface material is fixed, respectively, and the adjacent second unit ceiling surface material and the second ceiling connection surface material are adjacent to each other at the boundary between the first unit ceiling surface material and the The first ceiling connecting face material is fixed in a state of being shifted in the ceiling arrangement direction with respect to the boundary portion.

  In the unit type building, the first ceiling joint surface material is provided between the first unit ceiling members of the adjacent building units, and the second ceiling joint material is provided between the second unit ceiling members of the adjacent building units. Provided. In this case, the first ceiling joint surface material and the second ceiling joint surface material are fixed across the lower surface side of the field edge fixed to the lower surface of each adjacent ceiling beam of the adjacent building unit. In such a configuration, the first ceiling connecting surface material and the first unit ceiling surface material adjacent to the field edge under the ceiling beam are fixed to the adjacent second ceiling connecting surface material and the second unit ceiling surface material, respectively. Therefore, the boundary portion between the adjacent first ceiling connecting surface material and the first unit ceiling surface material and the boundary portion between the adjacent second ceiling connecting surface material and the second unit ceiling surface material are shifted in the ceiling arrangement direction. It will be difficult to do. In that case, there is a possibility that vertical displacement occurs between the adjacent second ceiling joint surface material and the second unit ceiling surface material, and the ceiling cloth is wrinkled or cut.

  Therefore, in the present invention, in the unit boundary portion, the field edge under the ceiling beam is a wide field edge, and the first ceiling connecting surface material and the first unit ceiling surface material adjacent to the wide field edge are adjacent to the second edge. The ceiling connecting surface material and the second unit ceiling surface material are each fixed in a state where the mutual boundary portions are shifted in the ceiling arrangement direction. Thereby, it is possible to prevent the ceiling cloth from being wrinkled or cut at the unit boundary without increasing the number of parts.

  In the ceiling structure of the building of the third invention, in the second invention, the adjacent building units are arranged so that their girder faces face each other, and the adjacent building units are arranged on the long side adjacent to each other. The wide field edges are fixed to the lower surfaces of the ceiling beams, respectively, and below the wide field edges, the first unit ceiling surface material and the The first ceiling connecting surface material is provided side by side, and the second unit ceiling surface material and the second ceiling connecting surface material are provided side by side, and are adjacent to the lower surface side of the wide field edge. The first unit ceiling surface material and the first ceiling joint surface material are respectively fixed, and the adjacent second unit ceiling surface material and the second ceiling joint surface material each have a boundary portion between each other. next to Characterized in that to the first unit ceiling surface material and the boundary portion of the first ceiling connecting surface material fits and is fixed in a state shifted to the ceiling arrangement direction.

  According to the present invention, the effect of the second invention can be obtained at a boundary portion between adjacent building units facing each other's girder surfaces (hereinafter also referred to as a unit boundary portion on the girder surface side). At the unit boundary on the girder side, if a new field edge is provided separately at a position that is lined up inside the unit with respect to the field edge under the ceiling beam, the new field edge is located under the adjacent ceiling beam. Since it is necessary to provide each at intervals, the number of parts may increase significantly. In this respect, according to the present invention, it is possible to suppress the occurrence of wrinkles and breakage of the ceiling cross without increasing the number of parts. Therefore, the ceiling structure of the second invention is applied to the unit boundary on the side of the girder. This can be said to have great significance.

  The ceiling structure of the building of the fourth invention is the inside of the building unit according to the second or third invention, wherein the wide field edge has the ceiling large beam with respect to the ceiling large beam to which the wide field edge is fixed. However, it does not extend to the outside of the building unit.

  According to the present invention, since the wide field edge is fixed to the large beam so as not to extend outside the building unit from the ceiling beam, a part of the wide field edge extends from the ceiling beam. Thus, it is possible to avoid that the extended portion obstructs the transportation of the building unit.

  The ceiling structure of a building according to a fifth aspect is the invention according to any one of the second to fourth aspects, wherein the second ceiling joint surface material has a length in the ceiling arrangement direction that is greater than the length of the first ceiling joint surface material. It is characterized by being fixed to each said wide field edge of the said adjacent building unit in the state which protruded from the said 1st ceiling joint surface material, respectively in the said ceiling arrangement direction.

  For example, when the length of the first ceiling connection surface material is larger than the length of the second ceiling connection surface material, both sides (or one side) of the first ceiling connection surface material in the ceiling alignment direction are connected to the second ceiling connection surface material. It protrudes from the face material and is disposed on the upper surface side of the second ceiling face material. In that case, at the time of construction, when the first ceiling joint surface material is assembled between the first unit ceiling surface materials of adjacent building units, the first ceiling joint surface material is assembled after removing the second ceiling surface material once. There is a risk of trouble.

  In that respect, in the present invention, the length of the second ceiling connection surface material is made longer than the first ceiling connection surface material, and both sides of the second ceiling connection surface material in the ceiling alignment direction are first. It is fixed to the wide field edge of the adjacent building unit in a state of protruding from the ceiling connecting face material. In this case, since the first ceiling joint surface material is not arranged on the upper surface side of the second ceiling surface material, when assembling the first ceiling joint surface material between the first unit ceiling surface materials of adjacent building units at the time of construction The trouble of once removing the second ceiling member does not occur. For this reason, the effect of said 2nd invention can be acquired, avoiding the increase in a construction man-hour.

  The ceiling structure of the building of the sixth invention is any one of the first to fifth inventions, wherein the wide field edge has one end in the width direction the same as one end in the width direction of the ceiling beam. It is fixed to the ceiling beam in a state aligned with the position.

  According to the present invention, when the wide field edge is fixed to the ceiling beam, it is possible to fix the wide field edge in a state where one end portion in the width direction of the wide field edge is aligned with the one end portion in the width direction of the ceiling beam. Thereby, in the structure which fixes a field edge wider than a ceiling beam to the said ceiling beam, the fixing operation | work can be made easy.

  According to a ceiling structure of a building of a seventh invention, in the sixth invention, the wide field edge is disposed immediately below the ceiling beam and fixed to the ceiling beam, and extends from the ceiling beam in the width direction. And the adjacent first ceiling surface material is fixed to the lower surface side of the beam lower portion, and the adjacent second ceiling surface material is respectively connected to the lower surface side of the extension portion. It is fixed.

  In the configuration of the sixth aspect of the invention, a part (lower part of the beam) is arranged directly below the ceiling beam at the wide field edge, and the remaining part (extending part) is extended from the ceiling beam to the side. In the present invention, in such a configuration, the adjacent first ceiling surface materials are fixed to the beam lower portions, and the adjacent second ceiling surface materials are fixed to the extending portions, respectively. In this case, since the adjacent first ceiling member is fixed to the lower part of the beam where bending is unlikely to occur, it can be supported in a stable state with respect to the wide field edge (lower part of the beam). Moreover, since the downward bending of the extension part can be restricted by the stably supported first ceiling surface material, the second ceiling surface material fixed to the extension part is also supported in a stable state. It becomes possible.

  The ceiling structure of a building according to an eighth aspect of the present invention is the construction according to any one of the first to seventh aspects, wherein the wide field edge extends in the width direction more than the ceiling beam to which the wide field edge is fixed. The extension part is set so that the extension length from the ceiling beam is less than or equal to half the width of the wide field edge.

  According to the present invention, since the extension length of the extension part is set to be less than or equal to half the width of the wide field edge, the extension part is bent downward by the weight of the ceiling surface material fixed to the extension part. It is possible to suppress the leakage. Thereby, it becomes possible to support a ceiling surface material in the stable state.

The perspective view which shows the outline | summary of a unit type building. The perspective view of a building unit. The top view which shows the building unit arranged in the 1st floor part. The longitudinal cross-sectional view which shows the structure of the ceiling part of a building unit. The top view which shows the arrangement | positioning state of the field edge in a ceiling part. The top view which shows the arrangement | positioning state of the ceiling surface material in a ceiling part. The longitudinal cross-sectional view which shows the structure of the ceiling part in the boundary part of an adjacent building unit. The top view which shows the pillar assembly part periphery where each pillar of an adjacent building unit gathers.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an outline of a unit type building.

  As shown in FIG. 1, the building 10 includes a building body 12 provided on a foundation 11 and a roof portion 13 provided above the building body 12. The building body 12 is a two-story building having a first floor portion 14 as a lower floor portion and a second floor portion 15 as an upper floor portion, and is configured by connecting a plurality of building units 20 to each other. The building unit 20 is manufactured in advance in a manufacturing factory, and then transported to a construction site by a truck or the like.

  FIG. 2 shows a perspective view of the building unit 20. As shown in FIG. 2, the building unit 20 includes four columns 21 disposed at the four corners thereof, and four ceiling beams 22 and floor beams 23 that connect the upper end portion and the lower end portion of each column 21, respectively. And. A rectangular frame (frame) is formed by the pillars 21, the ceiling beams 22 and the floor beams 23. The column 21 is made of a square tube-shaped square steel. The ceiling girder 22 and the floor girder 23 are made of channel steel having a U-shaped cross section, and are installed so that their openings face each other.

  A plurality of small ceiling beams 25 are bridged between the large ceiling beams 22 on the long sides of the building unit 20 at predetermined intervals. Similarly, a plurality of floor beams 26 are bridged between the large floor beams 23 on the long sides of the building unit 20 at predetermined intervals. The ceiling beam 25 and the floor beam 26 are provided at the same interval and at positions corresponding to the upper and lower sides, respectively. For example, the ceiling beam 25 is made of lip groove steel, and the floor beam 26 is made of square steel. Ceiling members 27 and 28 are supported by the ceiling beams 25, and a floor material 29 is supported by the floor beams 26.

  Next, the structure of the ceiling part in the 1st floor part 14 is demonstrated based on FIG. 3 thru | or FIG. FIG. 3 is a plan view showing the building units 20 arranged on the first floor portion 14. FIG. 4 is a longitudinal sectional view showing the configuration of the ceiling portion of the building unit 20. FIG. 5 is a plan view showing an arrangement state of the field edges in the ceiling portion. FIG. 6 is a plan view showing an arrangement state of the ceiling surface material in the ceiling portion. 4 corresponds to a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 3, in the first floor portion 14, a plurality (specifically, four) of building units 20 are installed with their longitudinal directions (specifically, longitudinal directions in plan view) oriented in the same direction. Specifically, four building units 20 are installed side by side in 2 rows × 2 rows. In this case, the building units 20 adjacent to each other in the longitudinal direction of the building unit 20 are arranged so that their wife faces (side surfaces on the short side) face each other, and the short direction of the building unit 20 (specifically, short in plan view) The building units 20 adjacent to each other in the (direction) are arranged with their girder surfaces (side surfaces on the long side) facing each other.

  As shown in FIGS. 4 and 5, in the ceiling portion of the building unit 20 in the first floor portion 14, the field edges 31 are respectively fixed to the lower surfaces of the respective ceiling beams 25. The field edge 31 is arranged along the longitudinal direction of the ceiling beam 25 and is fixed to the lower surface of the ceiling beam 25 with a screw or the like. Field edges 32 and 33 are fixed to the lower surface of each ceiling beam 22 respectively. The field edges 32 and 33 are disposed along the longitudinal direction of the ceiling beam 22 and are fixed to the lower surface of the ceiling beam 22 with screws or the like. Each field edge 31-33 consists of a long particle board, for example.

  In the ceiling portion of the building unit 20, ceiling surface materials 27 and 28 are provided side by side on the lower surface side of these field edges 31 to 33. The ceiling members 27 and 28 are made of gypsum board, and are provided in a state where two pieces are stacked one above the other. Each of the ceiling members 27 and 28 is formed in a rectangular plate shape (rectangular plate shape) having the same thickness. 6A shows an arrangement state of the upper ceiling surface material 27 (hereinafter referred to as the upper ceiling surface material 27) among the ceiling surface materials 27 and 28, and FIG. The arrangement state of the lower ceiling member 28 (hereinafter referred to as the lower ceiling member 28) is shown.

  As shown in FIG. 4 and FIG. 6A, a plurality of upper ceiling members 27 are provided side by side along the longitudinal direction of the building unit 20, in other words, the direction in which the ceiling beam 25 is arranged (the direction in which the beam is arranged). It has been. Each upper ceiling member 27 is provided across the lower surfaces of the plurality of field edges 31 to 33 arranged in the longitudinal direction of the building unit 20, and is fixed to the field edges 31 to 33 by screws 41. . Further, each upper ceiling member 27 is provided across the lower surfaces of the field edges 32 and 33 of the respective ceiling beams 22 on the long side facing each other. 41 is fixed. These screws 41 (corresponding to the first fixing tool) are driven against the field edges 31 to 33 in a state of passing through the upper ceiling member 27. The upper ceiling member 27 corresponds to the first ceiling member and the first unit ceiling member.

  As shown in FIG. 4 and FIG. 6B, a plurality of lower ceiling members 28 are provided side by side along the longitudinal direction of the building unit 20. That is, the lower ceiling member 28 is provided side by side in the same arrangement direction as the upper ceiling member 27. Each of the lower ceiling members 28 is provided across the lower surfaces of the plurality of field edges 31 to 33 arranged in the longitudinal direction of the building unit 20, and the upper ceiling member 27 is arranged with respect to the field edges 31 to 33. And is fixed by a screw 42 (corresponding to a second fixing tool). In addition, each lower ceiling member 28 is provided across the lower surfaces of the field edges 32 and 33 of each ceiling beam 22 on the long side, and the upper ceiling with respect to each field edge 32 and 33. It is fixed with screws 42 through a face material 27. All of these screws 42 are struck against the field edges 31 to 33 while penetrating the lower ceiling surface material 28 and the upper ceiling surface material 27. The lower ceiling member 28 corresponds to the second ceiling member and the second unit ceiling member.

  Each lower ceiling member 28 is provided across the lower surface of the adjacent upper ceiling member 27. Thereby, the boundary part of the adjacent lower ceiling surface material 28 and the boundary part of the adjacent upper ceiling surface material 27 are shifted from each other in the direction in which the ceiling surface materials 27 and 28 are arranged. More specifically, in such an arrangement direction, each boundary portion of the adjacent upper ceiling member 27 is located at the approximate center of the lower ceiling member 28.

  The upper ceiling member 27 and the lower ceiling member 28 are assembled to the building unit 20 in advance at the manufacturing factory.

  A ceiling cross 34 is provided on the lower surface of the lower ceiling member 28. The ceiling cloth 34 is a ceiling finishing material formed of vinyl chloride resin. The ceiling cloth 34 is provided across the lower surface of each lower ceiling surface material 28, and is attached to the lower surface of each lower ceiling surface material 28 with an adhesive.

  The other configuration shown in FIG. 4 will be described. The outer wall panel 45 is fixed to the outer surface of the ceiling beam 22 with bolts 48. An inner wall panel 46 is provided on the indoor side of the outer wall panel 45, and an in-wall heat insulating material 47 made of glass wool is provided between the outer wall panel 45 and the inner wall panel 46.

  Next, the structure of the ceiling part in the boundary part of the adjacent building unit 20 is demonstrated, referring FIG.7 and FIG.8 in addition to FIG.5 and FIG.6. FIG. 7 is a longitudinal sectional view showing a configuration of a ceiling portion at a boundary portion between adjacent building units 20. FIG. 8 is a plan view showing the vicinity of a column assembly portion where the columns 21 of adjacent building units 20 are assembled. Note that FIG. 7 shows a boundary portion between adjacent building units 20 with the faces facing each other, and corresponds to a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 7, the ceiling beams 22 (on the short side) of the building units 20 are adjacent to each other at the boundary between adjacent building units 20 facing each other. The ceiling girder 22 is arranged with the webs 22a facing each other. As described above, the field edge 33 is fixed to the lower surface of each ceiling beam 22. These field edges 33 are wide field edges whose width (length in the short direction) is larger (wider) than the width of the ceiling beam 22 (lower flange 22b).

  Each field edge 33 is fixed to the lower surface of the ceiling beam 22 (lower flange 22b) in a state where one end portion is aligned with the one end portion of the ceiling beam 22 in the width direction. Specifically, the field edge 33 is fixed to the ceiling beam 22 in a state where one end portion is aligned with the outer surface of the web 22a of the ceiling beam 22 in the width direction. In this case, the field edge 33 extends to the inside of the building unit 20 having the ceiling girder 22 with respect to the ceiling girder 22 (hereinafter also simply referred to as the unit inside), while the outside of the building unit 20 ( Hereinafter, it does not extend to the outside of the unit.

  A portion extending from the ceiling beam 22 at the field edge 33 is an extended portion 33a. In the extending portion 33 a, the extending length L from the ceiling beam 22 is set to be equal to or less than half the width W of the field edge 33. However, the extension length L of the extension portion 33 a may be greater than half the width W of the field edge 33. Further, in the field edge 33, a portion other than the extending portion 33a, that is, a portion disposed directly under the ceiling beam 22 is a beam lower portion 33b. The beam lower portion 33b is fixed to the lower surface of the ceiling beam 22 with screws.

  Between the upper ceiling members 27 of the adjacent building units 20, an upper ceiling joint member 37 is provided so as to connect the two ceiling members 27. Further, a lower ceiling connecting surface material 38 is provided between the lower ceiling surface materials 28 of the adjacent building units 20 so as to connect the two ceiling surface materials 28. In this case, the lower surface of the lower ceiling surface member 38 is flush with the lower surface of the lower ceiling member 28. The upper ceiling connecting surface material 37 corresponds to the first ceiling surface material and the first ceiling connecting surface material, and the lower ceiling connecting surface material 38 corresponds to the second ceiling surface material and the second ceiling connecting surface material. In FIGS. 6A and 6B, for convenience, the upper ceiling joint surface material 37 and the lower ceiling joint surface material 38 are hatched.

  Each ceiling connecting surface material 37, 38 is made of gypsum board like the ceiling surface materials 27, 28, and is provided in a state where two pieces are stacked one above the other. Each of the ceiling connecting surface materials 37 and 38 is formed in a rectangular plate shape (rectangular plate shape) having the same thickness, and the thickness thereof is the same as that of the ceiling surface materials 27 and 28.

  The upper ceiling connecting surface material 37 is provided over the lower surface of the field edge 33 of each adjacent building unit 20, and more specifically, provided over the lower surface of the beam lower portion 33 b of each field edge 33. Yes. In this case, an upper ceiling connecting surface material 37 and an upper ceiling surface material 27 are provided adjacent to each other on the lower surface side of the beam lower portion 33 b of each field edge 33. The adjacent upper ceiling surface material 37 and the upper ceiling surface material 27 are respectively fixed to the beam lower portion 33b by screws 41 (corresponding to a first fixture). In addition, the screw 41 is hit | damaged to the beam lower part 33b in the state which penetrated the upper ceiling connecting surface material 37 (or upper ceiling surface material 27).

  The width of the lower ceiling connecting surface material 38, that is, the length in the direction in which the field edges 33 of adjacent building units 20 are arranged (in other words, the longitudinal direction of the building unit 20) is larger than that of the upper ceiling connecting surface material 37. It has become. The lower ceiling connecting surface material 38 is provided across the lower surface side (directly below position) of each field edge 33 of the adjacent building unit 20, and specifically, the lower surface side of the extending portion 33 a of each field edge 33. It is provided across. Therefore, the lower ceiling joint surface member 38 is provided in a state where both sides in the direction in which the field edges 33 are arranged protrude from the upper ceiling joint member 37 to the side. In this case, the lower ceiling connecting surface material 38 and the lower ceiling surface material 28 are provided adjacent to each other on the lower surface side of the extending portion 33 a of each field edge 33. The adjacent lower ceiling joint surface material 38 and lower ceiling surface material 28 are fixed to the extending portion 33a by screws 42 (corresponding to a second fixture) via the upper ceiling surface material 27, respectively. . In addition, the screw 42 is hit | damaged to the extension part 33a in the state which penetrated the lower ceiling connecting surface material 38 (or lower ceiling surface material 28) and the upper ceiling surface material 27, respectively.

  In this way, at the boundary between adjacent building units 20 facing each other, the wide field edge 33 is fixed to the lower surface of the adjacent (short side) ceiling beam 22, In the lower side, the upper ceiling surface material 37 and the upper ceiling surface material 27 of the adjacent building unit 20 are provided side by side along the direction in which the field edges 33 are arranged, and are adjacent to the lower ceiling surface material 38. Each lower ceiling member 28 of the building unit 20 is provided side by side. In this case, the direction in which the upper ceiling connecting member 37 and the upper ceiling member 27 of the adjacent building unit 20 are arranged, and the lower ceiling member 28 of the building unit 20 adjacent to the lower ceiling connecting member 38 are arranged. The direction in which is aligned corresponds to the “ceiling alignment direction”. The adjacent upper ceiling surface material 37 and the upper ceiling surface material 27, and the adjacent lower ceiling surface material 38 and the lower ceiling surface material 28 are shifted from each other in the ceiling arrangement direction. It is fixed to the field edge 33. In this case, the ceiling arrangement direction is the same as the longitudinal direction of the building unit 20.

  A ceiling cloth 34 is attached to the lower surface of the lower ceiling joint surface member 38. The ceiling cloth 34 is provided across the lower surface of the lower ceiling connecting surface material 38 and the lower surface of the lower ceiling surface material 28, and is attached to each of the lower surfaces with an adhesive. The above is description of the structure of the ceiling part in the boundary part (henceforth the unit boundary part of the wife face side) of the adjacent building unit 20 which faces wife faces.

  The structure of the ceiling part in the boundary part of the building units 20 that are adjacent to each other with their girths facing each other (hereinafter also referred to as the unit boundary part on the girder side) This is basically the same as the configuration of the ceiling part. That is, the wide edge 33 is fixed to the lower surface of the adjacent (long side) ceiling beam 22 at the boundary between adjacent building units 20 facing each other. Below the field edges 33, along the direction in which the field edges 33 are arranged, the upper ceiling joint surface material 37 and each upper ceiling surface material 27 of the adjacent building unit 20 are provided side by side, and the lower ceiling joint is provided. The face material 38 and each lower ceiling face material 28 of the building unit 20 adjacent to each other are provided side by side. In this case, the direction in which the upper ceiling connecting member 37 and the upper ceiling member 27 of the adjacent building unit 20 are arranged, and the lower ceiling member 28 of the building unit 20 adjacent to the lower ceiling connecting member 38 are arranged. The direction in which is aligned corresponds to the “ceiling alignment direction”. The adjacent upper ceiling surface material 37 and the upper ceiling surface material 27, and the adjacent lower ceiling surface material 38 and the lower ceiling surface material 28 are shifted from each other in the ceiling arrangement direction. It is fixed to the lower surface side of the field edge 33. In addition, in the unit boundary part on the side of the girder, the ceiling arrangement direction is the same as the short direction of the building unit 20.

  Incidentally, at the unit boundary portion on the side of the girder side, the upper ceiling joint surface material 37 and the lower ceiling joint surface material 38 are each divided into a plurality (specifically three) along the longitudinal direction of the building unit 20. (See FIGS. 6A and 6B). In this case, the boundary part of the adjacent upper ceiling joint surface member 37 and the boundary part of the adjacent lower ceiling joint member 38 are set at positions shifted in the dividing direction. However, the upper ceiling joint surface material 37 and the lower ceiling joint surface material 38 do not necessarily have to be configured separately, and may be configured as a single body.

  The upper ceiling joint surface material 37 and the lower ceiling joint surface material 38 are assembled between the ceiling surface materials 27 and 28 of adjacent building units 20 after each building unit 20 is installed at the construction site. It is supposed to be Then, after the assembly of the ceiling connecting surface materials 37 and 38 is finished, the ceiling cloth 34 is pasted over the lower surface of the lower ceiling surface material 28 and the lower surface of the lower ceiling connecting surface material 38.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  In the boundary part (unit boundary part) of the adjacent building units 20, the field edges 33 are respectively fixed to the lower surfaces of the adjacent ceiling beams 22 of the adjacent building units 20 along the ceiling beams 22, and below the field edges 33. Then, a plurality of first ceiling members (upper ceiling member 27 and upper ceiling member 37) are arranged in parallel with the direction in which the field edges 33 are arranged as the ceiling arrangement direction, and a plurality of second ceiling members ( A lower ceiling member 28 and a lower ceiling connecting member 38) are arranged side by side. In the above embodiment, in this configuration, the field edge 33 is formed wider than the ceiling beam 22, and the upper ceiling surface material 27 and the upper ceiling joint surface material 37 adjacent to the lower surface side of the field edge 33. And the adjacent lower ceiling surface material 28 and the lower ceiling joint surface material 38 are arranged in the ceiling direction with respect to the boundary portions of the upper ceiling surface material 27 and the upper ceiling joint surface material 37 adjacent to each other. It was fixed in a shifted state. In this case, since the adjacent lower ceiling surface material 28 and lower ceiling connecting surface material 38 are respectively arranged on the lower surface of one upper ceiling surface material 27, the upper and lower ceiling surface materials 28, 38 are vertically Deviation in the direction can be made difficult to occur. For this reason, it is possible to prevent the ceiling cloth 34 from being cut or wrinkled at the boundary between the lower ceiling members 28 and 38.

  Further, the adjacent upper ceiling member 27 and upper ceiling connecting member 37 and the adjacent lower ceiling member 28 and lower ceiling connecting member 38 are respectively fixed to a common field edge 33 (wide field edge). Therefore, unlike the case where the adjacent upper ceiling members 27 and 37 and the adjacent lower ceiling members 28 and 38 are fixed to different field edges, there is no need to provide a new field edge. Thereby, it is possible to prevent the ceiling cloth 34 from being wrinkled or cut without increasing the number of parts.

  Moreover, in the boundary part of the adjacent building unit 20, the upper ceiling connecting surface material 37 and the lower ceiling connecting surface material 38 straddle the lower surface side of the field edge 33 fixed to the lower surface of each adjacent ceiling beam 22 respectively. And are provided respectively. In such a configuration, the upper ceiling surface material 27 and the upper ceiling joint surface material 37 adjacent to the field edge 33 and the adjacent lower ceiling surface material 28 and the lower ceiling joint surface material 38 are fixed, respectively. The boundary portion between the adjacent upper ceiling surface material 27 and the upper ceiling connecting surface material 37 and the boundary portion between the adjacent lower ceiling surface material 28 and the lower ceiling connecting surface material 38 are shifted in the ceiling arrangement direction. It will be difficult. In that case, the ceiling cross 34 may be wrinkled or cut at the unit boundary. In this regard, in the above-described embodiment, since the above-described ceiling structure is applied at the unit boundary, it is possible to prevent the ceiling cloth 34 from being wrinkled or cut at the unit boundary without increasing the number of parts. be able to.

  Moreover, the above-mentioned ceiling structure was applied to the unit boundary part in the unit boundary part, especially on the side of the beam face. In the unit boundary portion on the side of the girder, when a new field edge is separately provided at a position that is arranged side by side inside the unit with respect to the field edge 33 below the ceiling beam 22, the new field edge is located below the adjacent ceiling beam 25. It is necessary to provide for each between the field edges 31. Therefore, there is a possibility that the number of parts may be significantly increased. In that respect, according to the above-described ceiling structure, it is possible to suppress the occurrence of wrinkles and breakage of the ceiling cross 34 without increasing the number of parts, and therefore the above-described ceiling structure is applied to the unit boundary portion on the side of the beam face The significance of this has been great.

  Furthermore, the above-mentioned ceiling structure was applied also to the unit boundary part on the end face side. That is, the above-described ceiling structure was applied to both the unit boundary part on the girder side and the unit boundary part on the wife side. Thereby, it is possible to prevent the ceiling cloth 34 from being wrinkled or cut over the entire ceiling portion of the first floor portion 14.

  In addition, in the configuration in which a new field edge is separately provided at a position that is lined up inside the unit with respect to the field edge 33 under the ceiling beam 22, the ceiling joint surface material fixed to the new field edge is located inside the building unit 20. Since it will be provided (relatively large), it will be connected to the ceiling of the unit boundary on the girder side around the intersection (corner) between the unit boundary on the girder side and the unit boundary on the gable side. It is assumed that the face material and the ceiling joint face material at the unit boundary portion on the end face side interfere with each other. In that case, there is a possibility that it is difficult to allocate the ceiling connecting face material well. In that respect, in the above-described ceiling structure, the ceiling connecting surface members 37 and 38 are respectively fixed to the field edge 33 under the ceiling beam 22, so that the ceiling connecting surface members 37 and 38 do not protrude greatly to the inside of the unit. . Therefore, interference between the ceiling connecting surface materials 37 and 38 at the unit boundary portion on the girder face side and the ceiling connecting surface materials 37 and 38 at the unit boundary portion on the wife surface side is unlikely to occur, and the ceiling connecting surface materials 37 and 38 (and the ceiling surface materials). The face materials 27 and 28) can be easily allocated.

  The field edge 33 was fixed in a state in which it extends to the inside of the unit with respect to the upper ceiling beam 22 but not to the outside of the unit. Thereby, in the structure provided in the state in which a part of the field edge 33 extended from the ceiling girder 22, it can avoid that the extension part obstructs conveyance of the building unit 20.

  About the lower ceiling joint surface material 38, the width (length in the ceiling arrangement direction) is made larger than that of the upper ceiling joint surface material 37, and both sides in the width direction (ceiling arrangement direction) of the lower ceiling joint surface material 38 are arranged. Each was fixed to each field edge 33 of the adjacent building unit 20 in a state of protruding from the upper ceiling connecting surface material 37. In this case, since the upper ceiling connecting surface material 37 (the whole) is not arranged on the upper surface side of the lower ceiling surface material 28, the upper ceiling is interposed between the upper ceiling materials 27 of the adjacent building units 20 at the time of construction. When assembling the connecting face material 37, there is no need to remove the lower ceiling face material 28 once. Therefore, it is possible to obtain the above-described effect of suppressing the occurrence of wrinkles and breaks in the ceiling cloth 34 without increasing the number of parts while avoiding an increase in the number of construction steps.

  About the field edge 33, the one end part of the width direction was fixed to the said big beam 22 in the state aligned with the one end part of the width direction of the ceiling big beam 22. FIG. In this case, when the field edge 33 is fixed to the ceiling beam 22, it can be fixed while being aligned as described above. Therefore, when the field edge 33 wider than the ceiling beam 22 is fixed to the beam 22, the fixing work is performed. Can be made easier.

  At the field edge 33, the upper ceiling member 27 and the upper ceiling joint member 37 adjacent to the lower surface side of the beam lower portion 33b are respectively fixed, and the lower ceiling member 28 and the lower member adjacent to the lower surface side of the extending portion 33a are fixed. The side ceiling connecting face material 38 was fixed. In this case, since the adjacent upper ceiling member 27 and the upper ceiling joint member 37 are fixed to the beam lower portion 33b which is not easily bent, the ceiling member 27 and 37 are fixed to the field edge 33 in a stable state. It becomes possible to support. Further, the downwardly-curved bending of the extending portion 33a can be regulated by the both stably supported ceiling surface materials 27 and 37 (specifically, the upper ceiling surface material 27), and therefore, the fixed to the extending portion 33a. The lower ceiling member 28 and the lower ceiling joint member 38 can be supported in a stable state.

  Since the extension length L of the extension portion 33a is set to be equal to or less than half the width W of the field edge 33, the extension ceiling 33 is fixed to the extension portion 33a by the weight of the lower ceiling surface material 28 and the lower ceiling joint surface material 38. It can suppress that the extension part 33a bends below. Thereby, it becomes possible to support the ceiling surface materials 27, 28, 37, and 38 in a stable state.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the field edge 33 is fixed to the large beam 22 in a state where the field edge 33 extends only to the inside of the unit with respect to the ceiling large beam 22. You may fix in the state extended to both the outer sides. That is, you may provide an extension part in the both sides of the width direction of the field edge 33, respectively. In this case, when the width of the field edge 33 is compared with the same width, the extension length L of the extension portion can be made smaller than the field edge 33 of the above-described embodiment. It is possible to further suppress the portion from bending downward.

  Further, the field edge 33 may be fixed in a state where it extends only to the outside of the unit with respect to the ceiling beam 22. However, in order to avoid the extension portion of the field edge 33 from interfering with the transportation of the building unit 20, the field edge 33 is extended only inside the unit with respect to the ceiling beam 22 as in the above embodiment. It is preferable.

  (2) In the above embodiment, the width of the lower ceiling connecting surface member 38 (the length in the ceiling arrangement direction) is made larger than the width of the upper ceiling connecting surface member 37. The width of the face material 38 may be the same as the width of the upper ceiling joint surface material 37, or the width of the lower ceiling joint surface material 38 may be smaller than the width of the upper ceiling joint surface material 37. Even in these cases, the upper ceiling surface material 27 and the upper ceiling joint surface material 37 adjacent to each other, and the lower ceiling surface material 28 and the lower ceiling joint surface material 38 that are adjacent to each other are arranged on the ceiling. If it fixes to the field edge 33 in the state shifted to the direction, it can suppress that wrinkles and cutting | disconnection generate | occur | produce in the ceiling cross 34, without accompanying the increase in a number of parts.

  (3) The beam lower portion 33b and the extension portion 33a of the field edge 33 are formed separately, and the beam lower portion 33b and the extension portion 33a formed by these separate bodies are integrated by bonding or the like to form the field edge 33. May be formed.

  (4) In the above embodiment, the field edge 33 provided on the lower surface of each adjacent ceiling beam 22 of the adjacent building unit 20 is a wide field edge, but each field provided on the lower surface of the ceiling beam 25 is provided. Any one of the edges 31 may be formed wider than the ceiling beam 25 to form a wide field edge. In that case, on the lower surface side of the field edge 31, the adjacent upper ceiling member 27 and the adjacent lower ceiling member 28 are arranged in the direction in which the ceiling members 27, 28 are arranged in the boundary direction (in the ceiling arrangement direction). It is possible to fix in a shifted state. Thereby, since it becomes unnecessary to provide the field edge 31 for each ceiling beam 25, it is possible to prevent the ceiling cloth 34 from being wrinkled or broken while reducing the number of parts.

  (5) Although the application example to the unit type building has been described in the above embodiment, the present invention is applied to a building having another structure such as a building constructed by a steel frame construction method or a building constructed by a conventional wooden construction method. May be applied.

  DESCRIPTION OF SYMBOLS 10 ... Building, 20 ... Building unit, 22 ... Large ceiling beam as ceiling beam, 25 ... Ceiling beam, 27 ... First ceiling surface material and upper ceiling surface material as first unit ceiling surface material, 28 ... Second ceiling Lower ceiling surface material as a surface material and second unit ceiling surface material, 33 ... Field edge as a wide field edge, 33a ... Extension part, 33b ... Beam lower part, 34 ... Ceiling cloth, 37 ... First ceiling surface material And an upper ceiling joint surface material as a first ceiling joint surface material, 38... A second ceiling joint surface material and a lower ceiling joint surface material as a second ceiling joint surface material.

Claims (8)

A plurality of ceiling beams arranged side by side;
A plurality of field edges that are fixed to the lower surface of each ceiling beam and extend along the longitudinal direction of the ceiling beam,
A plurality of first ceiling members arranged in parallel in the direction in which the respective field edges are arranged below each field edge, and fixed to each of the field edges,
A plurality of second ceilings arranged in parallel in the direction in which the first ceiling members are arranged on the lower surface side of the first ceiling member, and fixed to the field edge via the first ceiling member, respectively. Face material,
A ceiling cloth provided across the lower surface of each second ceiling member;
A ceiling structure of a building comprising:
At least one of the field edges is a wide field edge wider than the ceiling beam to which the field edge is fixed,
The first ceiling surface material adjacent to each other is fixed to the lower surface side of the wide field edge, and the second ceiling surface material adjacent to each other has a boundary between the first ceiling surface materials adjacent to each other. A ceiling structure of a building, wherein the ceiling structure is fixed in a state of being shifted in the ceiling arrangement direction with respect to a boundary portion. It is applied to a unit type building constructed by combining multiple building units with floor beams, ceiling beams and columns.
In the adjacent building unit, the adjacent ceiling beams are the plurality of ceiling beams arranged side by side, and the lower edge of each of the ceiling beams is fixed with the wide field edge that is wider than the ceiling beam. And
Below each of the wide field edges, the plurality of first ceiling surface materials are juxtaposed with the direction in which the wide field edges are arranged as the ceiling arrangement direction, and the plurality of second ceiling surface materials are juxtaposed. Has been
The plurality of first ceiling members are provided between first unit ceiling members provided in the adjacent building units and first unit ceiling members of the adjacent building units. 1st ceiling joint surface material is included,
The plurality of second ceiling members are provided between the second unit ceiling members provided in the adjacent building units and the second unit ceiling members of the adjacent building units. 2nd ceiling joint surface material is included,
The first unit ceiling surface material and the first ceiling connecting surface material adjacent to each other are fixed to the lower surface side of the wide field edge, and the second unit ceiling surface material and the second ceiling adjacent to each other are fixed. The connecting surface material is fixed in a state where the boundary portions of the connecting surface materials are shifted in the ceiling arrangement direction with respect to the boundary portions of the adjacent first unit ceiling surface material and the first ceiling connecting surface material, respectively. The ceiling structure of the building according to claim 1. The adjacent building units are arranged with their facets facing each other,
In the adjacent building units, the wide field edge is fixed to the lower surface of each of the ceiling beams on the long sides adjacent to each other,
Below each of the wide field edges, the first unit ceiling surface material and the first ceiling joint surface material are provided side by side with the direction in which the wide field edges are arranged as the ceiling alignment direction, and the second The unit ceiling surface material and the second ceiling joint surface material are provided side by side,
The first unit ceiling surface material and the first ceiling connecting surface material adjacent to each other are fixed to the lower surface side of the wide field edge, and the second unit ceiling surface material and the second ceiling adjacent to each other are fixed. The connecting surface material is fixed in a state where the boundary portions of the connecting surface materials are shifted in the ceiling arrangement direction with respect to the boundary portions of the adjacent first unit ceiling surface material and the first ceiling connecting surface material, respectively. The ceiling structure of the building of Claim 2.   The wide field edge extends to the inside of the building unit having the ceiling beam with respect to the ceiling beam to which the wide field edge is fixed, but does not extend to the outside of the building unit. The ceiling structure of the building according to claim 2 or 3, characterized by the above-mentioned.   The second ceiling joint surface material has a longer length in the ceiling arrangement direction than the first ceiling joint surface material, and both sides in the ceiling arrangement direction protrude from the first ceiling connection surface material, respectively. 5. The ceiling structure of a building according to claim 2, wherein the building ceiling structure is fixed to each of the wide field edges of the adjacent building units.   The wide field edge is fixed to the ceiling beam in a state where one end portion in the width direction is aligned with the one end portion in the width direction of the ceiling beam. The ceiling structure of the building as described in any one of thru | or 5. The wide field edge has a beam lower portion that is arranged directly below the ceiling beam and fixed to the ceiling beam, and an extending portion that extends in the width direction from the ceiling beam,
The adjacent first ceiling member is fixed to the lower surface side of the beam lower part,
The building ceiling structure according to claim 6, wherein each of the adjacent second ceiling members is fixed to a lower surface side of the extending portion. The wide field edge has an extending part extending in the width direction from the ceiling beam to which the wide field edge is fixed,
The extension portion of the building according to any one of claims 1 to 7, wherein an extension length from the ceiling beam is set to be equal to or less than half of a width of the wide field edge. Ceiling structure.

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