JP6285740B2 - Building roof structure - Google Patents

Description

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

  In buildings such as houses, the roof portion may be configured as a flat roof (see, for example, Patent Document 1). The flat roof is formed, for example, by laying a field board on a roof frame provided side by side, and laying an underlaying material, a roof finishing material, or the like on the field board.

  The building may have a balcony. In a building including a balcony, a part of a flat roof is projected outward from the outer wall, and the balcony may be covered from above by the protruding part (hereinafter referred to as a roof protruding part).

  In such a roof overhanging part, the roof frame may be supported by the overhanging frame constituting the skeleton (framework). The overhang frame includes, for example, a pair of overhang beams provided to extend from the outer wall to the outdoor side, and a plurality of connection beams that connect the overhang beams. In this case, for example, the roof frames are arranged side by side in the extending direction of the roof extending portion, and are arranged so that the connecting beam is located at the boundary portion between the adjacent roof frames. In such an arrangement state, it is conceivable that adjacent roof frames (end portions) are supported in common by being placed on the connecting beams.

JP 2011-214322 A

  Here, in the structure mentioned above, when a solar panel is installed on a roof overhang | projection part, it is possible that the support member which supports the load of a solar panel from the downward direction is provided on an overhang | projection frame. For example, it is conceivable that the support member is provided on the connecting beam.

  However, in the above-described configuration in which the adjacent roof frames are supported on the connecting beams, the adjacent roof frames (the ends thereof) are respectively placed on the connecting beams. It is assumed that there is no space for installation. In this case, even if it is going to arrange | position a support member on a connection beam, a support member may interfere with the roof frame on a connection beam, and there exists a possibility that a support member cannot be arrange | positioned in a stable state. Therefore, there is a possibility that the installation of the solar panel has to be abandoned.

  The present invention has been made in view of the above circumstances, and has a configuration in which adjacent roof frames are each supported by a common support beam, and further supports members other than the roof frame on the support beam. The main purpose is to provide a roof structure of a building that can.

  In order to solve the above problems, the roof structure of the building of the first invention is provided side by side, and extends along the boundary between the plurality of roof frames that support the field plate from below and the adjacent roof frames, and each of them. A roof structure of a building including supporting beams that respectively support the load of the roof frame, and brackets are fixed to the supporting beams so as to protrude from the supporting beams in the direction in which the roof frames are arranged. The roof frame is supported on the bracket in a mounted state.

  According to the present invention, each of the roof frames is supported by the support beam provided along the boundary between the adjacent roof frames. In such a configuration, the bracket is fixed to the support beam so as to protrude from the support beam in the direction in which the adjacent roof frames are arranged, and the roof frame is placed on the bracket. It is supported. In this case, since the roof frame is not placed on the support beam, it is possible to secure a wide area (non-placed portion) where the roof frame is not placed on the support beam. Accordingly, adjacent roof frames are supported by (common) support beams, and members other than the roof frame can be supported on the support beams.

  In the roof structure of the building of the second invention, in the first invention, the bracket is fixed to the support beam so as to protrude from the support beam to one side of the arrangement direction, Of the adjacent roof frames, one roof frame is supported while being placed on the bracket, and the other roof frame is supported while being placed on the support beam. To do.

  According to the present invention, one of the adjacent roof frames is supported while being placed on the bracket, and the other roof frame is supported while being placed on the support beam. In this case, since it is only necessary to provide the support beam with a bracket that supports one of the adjacent roof frames, the number of brackets is smaller than when the brackets that support both roof frames are provided on the support beams. Can be reduced. Therefore, the effects of the first invention can be obtained while reducing the number of parts.

  Here, as a support structure of the roof frame by the bracket, a plurality of brackets are arranged at predetermined intervals along the longitudinal direction of the support beam, and the roof frame is placed and supported so as to straddle the plurality of brackets. Configuration is conceivable. If the present invention is applied to such a configuration, the number of parts (brackets) can be greatly reduced.

  The roof structure of a building of a third invention is applied to a building in which equipment is installed on the roof in the first or second invention, and a part of the upper surface of the support beam is the adjacent roof frame. None of these is a non-mounting portion on which no device is placed, and a device support portion for supporting the load of the device from below is provided on the non-mounting portion.

  In buildings such as houses, equipment such as solar panels may be installed on the roof. Since such devices generally have a large weight, it is conceivable that a device support portion that supports the load of the device from below is provided on a framework (frame) that constitutes the roof portion. In that case, it is conceivable that the device support portion is provided on a support beam, for example. In this regard, in the present invention, by forming at least one of the adjacent roof frames on the bracket, a non-mounting portion in which none of the roof frames is mounted on the upper surface of the support beam, A device support portion is provided on the non-mounting portion. As a result, the adjacent roof frames are supported by the common support beam, and it is possible to further support the equipment support portion and thus the load of the equipment on the support beam.

  A roof structure of a building according to a fourth aspect of the present invention is the roof structure according to any one of the first to third aspects, wherein a part of the roof portion is a roof overhanging portion projecting outward from the outer wall. The section includes the adjacent roof frames and an overhanging frame that supports each of the roof frames, and the overhanging frame is provided with a plurality of overhanging beams that are provided so as to protrude outward from the outer wall. A plurality of connecting beams that are respectively connected to the overhanging beams, and the plurality of connecting beams are provided at positions separated from the outer wall, and are located closest to the outer wall among the connecting beams. The connecting beam is the support beam, and the adjacent roof frames are arranged side by side in the extending direction of the roof extending portion, and the connecting beam is positioned at the boundary portion of each roof frame. Arranged And which, in the connecting beam the bracket is fixed, characterized in that the roof frame on the bracket is mounted.

  In the roof overhanging portion, an overhanging frame having an overhanging beam and a connecting beam is provided, and the roof frame may be supported by the overhanging frame. Here, when a device such as a shutter device is attached to the outer wall, it should be attached so that at least a part of the device is embedded in the roof overhang for the purpose of effectively using the dead space in the roof overhang. Can be considered. In this case, in order to avoid such an apparatus from interfering with the connecting beam (close to the outer wall), it is conceivable that the connecting beam is arranged away from the outer wall to the outdoor side.

  Here, in such a configuration, when the roof frame is supported by the overhanging frame, there may be a case where the roof frame needs to be divided (divided) into a plurality at the position of the connecting beam. In this case, since the separated roof frames are arranged so that the connecting beams are located at the boundary portions of each other, there is a situation in which these roof frames are supported with respect to the common connecting beam. To do. Therefore, in the present invention, in view of such a point, the first invention is applied to such a configuration (specifically, the connecting beam). In this case, each roof frame divided (adjacent) at the roof overhanging portion can be supported by a common connecting beam, and another member other than the roof frame is supported on the connecting beam. If it occurs, the other member can be supported.

  According to a roof structure of a building of a fifth invention, in the fourth invention, the outer wall is provided with a shutter device that opens and closes an opening provided in the outer wall, and at least a part of the shutter device is the roof. It is arrange | positioned so that it may be embedded in the overhang | projection part, and in the arrangement | positioning state, it is located between the said connection beam near the said outer wall, and the said outer wall, It is characterized by the above-mentioned.

  According to the present invention, since the shutter device is provided so that at least a part thereof is embedded in the roof overhanging portion, the shutter device can be installed while effectively utilizing the space in the roof overhanging portion. In addition, since the shutter device is embedded in this way, the connecting beam (close to the outer wall) is arranged away from the outer wall to avoid interference with the shutter device, and the roof frame is accordingly connected to the connecting device. However, in this regard, by applying the fourth aspect of the present invention, the adjacent roof frames are supported by the connecting beams while the other members are supported by the connecting beams. Can be made.

  A roof structure of a building according to a sixth aspect of the present invention is the structure according to any one of the first to fifth aspects, further comprising a support frame that supports the adjacent roof frame, and the support frame is provided at a boundary between the adjacent roof frames. The support beam is provided, and the bracket is fixed to the support beam so as to protrude from the support beam on either side of the arrangement direction, and the adjacent roof frame One roof frame is supported in a state of being placed on the bracket, and the other roof frame is supported in a state of being placed on the support beam. The part where the other roof frame is not placed is provided with an equipment support part that supports the load of the equipment installed on the roof from below, and the equipment support part is located in the manufacturing factory. The other roof frame is fixed to the support beam in advance, and the other roof frame is assembled to the support frame in a state of being previously mounted on the support beam in a manufacturing factory, and the one roof frame is In the construction site, it is installed by being placed on the bracket.

  In a configuration including a support frame that supports adjacent roof frames, one of the roof frames may be assembled (attached) to the support frame at a manufacturing factory, and the other may be installed (retrofit) at a construction site. Here, when the roof frame is retrofitted at the construction site, it can be considered that the roof frame is retrofitted while being supported by hanging with a crane or the like. For this reason, when the retrofitted roof frame is placed on the support beam, there is a risk that the roof frame may interfere with the device support portion provided on the support beam and the device support portion may be damaged. . Therefore, in the present invention, in view of this point, the front roof frame (the other roof frame) is placed on the support beam, and the rear roof frame (one roof frame) is placed on the bracket. Yes. Thereby, when installing the roof frame of a retrofit on the spot, it can suppress that a roof frame interferes with an apparatus support part.

The perspective view which shows the whole unit type building. The perspective view of a building unit. The longitudinal cross-sectional view which shows the structure of the roof part periphery above a balcony. The top view which shows the roof frame provided in the roof part. The top view which shows the state by which the overhang | projection frame was connected with the building unit. The longitudinal cross-sectional view which shows the structure of the boundary part periphery of each overhang | projection roof frame. Explanatory drawing for demonstrating the manufacturing procedure of a roof overhang | projection part.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. In the present embodiment, the building is a unit type building constructed by a plurality of building units. FIG. 1 is a perspective view showing the entire unit type building.

  As shown in FIG. 1, the building 10 includes a building body 12 provided on the 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. The building body 12 is configured by combining a plurality of building units 20 with each other.

  A balcony 16 is provided on the second floor portion 15 of the building body 12. The balcony 16 has two side surfaces surrounded by an outer wall 17 and the other two side surfaces are open to the outdoors. The outer wall 17 is formed with a window portion 18 composed of a sweep window. It is possible to enter and exit the balcony 16 through the window 18 from the living room 24 (see FIG. 3). In addition, a waist wall 19 is provided at the outdoor open portion of the balcony 16.

  In addition, the balcony 16 is formed using the space on the building unit 20 of the first floor portion 14 formed by not providing a part of the building unit 20 in the second floor portion 15. In place of this, the building unit 20 of the second floor portion 15 is placed back (retracted) with respect to the building unit 20 of the first floor portion 14 and is formed on the building unit 20 of the first floor portion 14. These spaces may be used for forming the balcony 16.

  The roof portion 13 is configured as a land roof (flat roof), and a parapet 31 is provided on the periphery thereof. The roof portion 13 is provided with a roof overhanging portion 32 (eave portion) that projects outward from the building body 12 and covers the balcony 16 from above. A part of the load of the roof overhanging portion 32 is supported by a support column 33 erected on the protruding corner portion of the balcony 16.

  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. The ceiling member 27 is supported by the ceiling beam 25 and the floor member 28 is supported by the floor beam 26.

  Next, the structure of the roof part 13 is demonstrated based on FIG.3 and FIG.4. FIG. 3 is a longitudinal sectional view showing a configuration around the roof portion 13 above the balcony 16. FIG. 4 is a plan view showing a roof frame provided on the roof portion 13.

  As shown in FIG. 3, the balcony 16 is separated from the living room 24 by the outer wall 17. The outer wall 17 is constituted by a plurality of outer wall panels 35 provided side by side, and these outer wall panels 35 are attached to the side surface of the building unit 20. The outer wall panel 35 includes an outer wall surface material 36 provided facing the balcony 16 (outdoor), and a base frame 37 fixed to the back surface side of the outer wall surface material 36. The outer wall surface material 36 is configured by ceramic siding.

  A ceiling member 27 is provided on the ceiling of the living room 24. The ceiling surface material 27 is made of a double-layered gypsum board and is attached to the lower surface of the ceiling beam 22 via a field edge 29. A ceiling heat insulating material 47 is provided in the upper space (ceiling back space) of the ceiling surface material 27, and a beam heat insulating material 48 is provided in the groove portion of the ceiling beam 22. Both the ceiling heat insulating material 47 and the beam heat insulating material 48 are made of glass wool.

  As shown in FIGS. 3 and 4, a unit roof frame 40 is provided above the building unit 20. The unit roof frame 40 is formed by combining a plurality of beam members in a rectangular frame shape, and is provided so as to be bridged on the ceiling large beam 22 on each long side of the building unit 20. In FIG. 4, the building unit 20 is indicated by a two-dot chain line (virtual line) for convenience.

  The unit roof frame 40 includes a pair of opposed beams 41 (beam materials) provided to face each other, and a plurality of small beams 42 (beam materials) provided between the opposed beams 41. Prepare. Each counter beam 41 is made of a steel material having an L-shaped cross section, and the small beam 42 is made of square steel or groove steel. Each small beam 42 is bridged and fixed between the opposing beams 41 in a direction orthogonal to the opposing beams 41.

  The unit roof frame 40 is installed by placing each facing beam 41 on the ceiling beam 22 (on the long side) of the building unit 20. The facing beam 41 is fixed to the ceiling beam 22 by a plurality of bolts 81. As a result, the unit roof frame 40 is fixed to each ceiling beam 22 and, by extension, is fixed to the building unit 20.

  Then, the structure of the roof extension part 32 is demonstrated.

  An eaves top plate 51 is provided at the bottom of the roof overhanging portion 32. The eaves top plate 51 is made of a plate-like incombustible material having predetermined fire resistance. The eaves top plate 51 is provided so as to be bridged between the outer wall 17 and the front end portion (outdoor side end portion) of the roof overhang portion 32.

  A shutter device 52 is provided on the outer wall 17 above the window 18. The shutter device 52 includes a shutter curtain 53 that opens and closes the window 18 by moving up and down, and a shutter box 54 that houses the shutter curtain 53 in a wound state. The shutter curtain 53 is a slat type shutter curtain 53, for example. The shutter box 54 is attached to the outer wall 17 so that almost the entire shutter box 54 is embedded in the roof overhanging portion 32. Therefore, only a part of the lower surface side of the shutter box 54 is exposed downward. In this case, in addition to enabling the installation of the shutter device 52 by effectively using the space above the eaves top plate 51 (eave top back space), the window 18 formed on the outer wall 17 is expanded upward. Is possible.

  The roof overhang portion 32 includes an overhang frame 55 that constitutes a skeleton (framework) of the roof overhang portion 32. One end portion (end portion on the indoor side) of the extension frame 55 is connected to the building unit 20, and is provided so as to protrude to the outdoor side (above the balcony 16) in the connected state. The overhang frame 55 corresponds to a support frame.

  FIG. 5 shows a state in which the overhang frame 55 is connected to the building unit 20. As shown in FIGS. 3 and 5, the overhanging frame 55 has a rectangular shape as a whole, and the length in the longitudinal direction is substantially the same as the length in the longitudinal direction of the building unit 20. The extension frame 55 has a pair of extension beams 56 having one end fixed to the column 21 of the building unit 20 and the other end extending toward the outdoor side, and two connections connecting the extension beams 56. And a beam 57. Each overhanging beam 56 is made of channel steel having a U-shaped cross section. Each overhanging beam 56 is provided in a direction orthogonal to the outer wall 17 (outer wall surface), and is disposed in a state where the groove portions face each other.

  Each connecting beam 57 is made of channel steel having a U-shaped cross section. Each connecting beam 57 extends in a direction orthogonal to the overhanging beam 56, and is disposed in a state where the groove portions face each other. One of the connecting beams 57 (hereinafter, the symbol “a” is attached) connects between the distal ends (outdoor end portions) of the projecting beams 56, and the other connecting beam 57 ( In the following, b is added to the reference numeral), and the intermediate portions of the overhanging beams 56 are connected.

  The shutter device 52 described above is disposed between the outer wall 17 and the indoor connecting beam 57b. In the present embodiment, the connecting beam 57b is arranged away from the outer wall 17 to the outdoor side so that the shutter device 52 can be arranged at the same height position as the overhanging frame 55, and is formed thereby. A shutter device 52 is disposed in a space between the outer wall 17 and the connecting beam 57b.

  A plurality of small beams 58 are bridged between the connecting beams 57 a and 57 b in a direction parallel to the extending beam 56. The small beam 58 is made of a steel material having a smaller cross-sectional dimension than the projecting beam 56 and the connecting beam 57, and is made of, for example, a grooved steel or a square steel.

  As shown in FIG. 3, a suspension support member 67 extending downward from the small beam 58 is fixed to each small beam 58. A base material 68 of the eaves top plate 51 is fixed to the lower ends of the suspension support members 67. In addition, a suspension support member 69 different from the suspension support member 67 is fixed to the connecting beam 57b. The suspension support material 69 extends to the indoor side and extends downward from the suspension support material 69, and a base material 68 is fixed to the lower end thereof. Each of these base materials 68 is made of a long material extending in a direction orthogonal to the beam 58, and an eaves top plate 51 is attached to the lower surface of these base materials 68 with screws or the like.

  As shown in FIGS. 3 and 4, the extended frame 55 is provided with two extended roof frames 60 and 70. These overhanging roof frames 60 and 70 are provided side by side in the overhanging direction (indoor / outdoor direction) of the roof overhanging portion 32, and are divided and arranged in the indoor / outdoor direction by connecting beams 57b. That is, each of these extended roof frames 60 and 70 is arranged so that the connecting beam 57b is located at the boundary between each other. Among the extended roof frames 60 and 70, the extended roof frame 60 on the outdoor side is provided between the connecting beams 57a and 57b of the extended frame 55, so that the extended roof frame on the indoor side is provided. 70 is provided between the connecting beam 57b on the indoor side and the large ceiling beam 22 of the building unit 20. In FIG. 4, for the sake of convenience, the overhang frame 55 is indicated by a two-dot chain line (virtual line).

  Each of the extended roof frames 60 and 70 is formed by combining a plurality of beam members into a rectangular frame shape. The lengths of the extended roof frames 60 and 70 in the longitudinal direction (the width direction of the roof extending portion 32) are the same, and are slightly smaller than the length of the extended frame 55 in the longitudinal direction. .

  The extended roof frame 60 includes a pair of opposed beams 61 (beam materials) provided to face each other, and a plurality of small beams 62 (beam materials) provided between the opposed beams 61. Is provided. Each of the opposing beams 61 is made of a steel material having an L-shaped cross section, and is arranged in a direction parallel to each other. Each of the opposed beams 61 includes a supported portion 64 supported on the connecting beams 57a and 57b, and a rising portion 65 that rises upward from an end of the supported portion 64 inside the frame.

  The small beam 62 is made of a steel material, for example, a square steel or a channel steel. Each small beam 62 is bridged between the opposing beams 61 in a direction orthogonal to the opposing beams 61, and both ends thereof are fixed to the rising portions 65 of the opposing beams 61 by welding or the like.

  The extended roof frame 60 is installed by placing the opposing beams 61 on the connecting beams 57a and 57b of the extended frame 55, respectively. The opposing beams 61 are arranged along the connecting beams 57a and 57b, respectively, and the supported beams 64 are placed on the connecting beams 57a and 57b, respectively, with bolts 66 on the connecting beams 57a and 57b. It is fixed. A plurality of bolts 66 are arranged at predetermined intervals along the opposing beam 61 (the connecting beams 57a and 57b). Thus, the extended roof frame 60 is installed in a state where it is supported by the connecting beams 57 a and 57 b, and as a result, is installed in a state where it is supported by the extended frame 55. Further, in the following description, among the opposing beams 61, a is assigned to the sign of the outdoor facing beam 61, and b is assigned to the sign of the indoor facing beam 61.

  The overhanging roof frame 70 has basically the same configuration as the overhanging roof frame 60. That is, the extended roof frame 70 is provided so as to be bridged between a pair of opposed beams 71 (beam members) provided to face each other and the opposite beams 71, similarly to the extended roof frame 60. A plurality of small beams 72 (beam materials). The facing beam 71 is made of a steel material having an L-shaped cross section like the facing beam 61, and has a horizontally supported portion 74 and a vertically rising portion 75.

  The small beam 72 is made of the same steel material as the small beam 62. A plurality of small beams 72 are bridged between the opposing beams 71 at the same pitch as the small beams 62, and both ends thereof are fixed to the rising portions 75 of the opposing beams 71 by welding or the like.

  The overhanging roof frame 70 is placed on a bracket 76 in which the outdoor facing beam 71 a is fixed to the connecting beam 57 b, and the indoor facing beam 71 b is fixed to the ceiling large beam 22 of the building unit 20. It is installed by mounting on 83. The opposed beam 71a on the outdoor side is disposed along the connecting beam 57b, and the supported portion 74 is placed on the bracket 76 fixed to the indoor side of the connecting beam 57b, and the bracket 76 is bolted to the bracket 76. It is fixed.

  On the other hand, the indoor facing beam 71 b is arranged along the ceiling beam 22 of the building unit 20, and the supported portion 74 is placed on the bracket 83 fixed on the ceiling beam 22. It is fixed with bolts 85. The bracket 83 is a long material extending along the ceiling beam 22 and is fixed on the ceiling beam 22 together with the opposing beam 41 of the unit roof frame 40 by bolts 81 (co-fastening). A plurality of bolts 85 are arranged at predetermined intervals along the opposing beam 71b.

  In this manner, the overhanging roof frame 70 is fixed to the opposing beam 71b and the ceiling beam 22 via the brackets 76 and 83, respectively. As a result, the overhanging roof frame 70 is installed in a state of being supported by the opposing beam 71b and the ceiling large beam 22 via the brackets 76 and 83, and in the state of being supported by the overhanging frame 55 and the building unit 20. is set up.

  In the installation state of the unit roof frame 40 and the extended roof frames 60, 70 described above, the roof frames 40, 60, 70 are arranged side by side. The upper surfaces of these roof frames 40, 60, and 70 (specifically, the small beams 42, 62, and 72) are all located on the same plane, and a plurality of field plates are placed on the roof frames 40, 60, and 70. 77 are provided side by side. These base plates 77 are fixed to the small beams 42, 62, 72 with screws or the like in a state where they are placed on the small beams 42, 62, 72 of the roof frames 40, 60, 70. A roof heat insulating material 78 is laid on the base plate 77. The roof heat insulating material 78 is made of hard urethane foam or the like. A roofing material 79 is laid on the roof heat insulating material 78. The brazing material 79 is made of a steel plate provided with a water-resistant coating. The thatched material 79 forms the roof surface of the roof portion 13 and further rises upward at the end portion on the parapet 31 side to form the inner surface of the parapet 31.

  Here, as described above, the connecting beam 57b of the extended frame 55 is located at the boundary between the extended roof frames 60 and 70, and the extended roof frames 60 and 70 are connected to the connected beam 57b. Are supported. Below, the support structure of each extended roof frame 60 and 70 with respect to this connection beam 57b is demonstrated in detail, using FIG. 6 in addition to FIG. FIG. 6 is a longitudinal sectional view showing a configuration around the boundary portion of each of the extended roof frames 60 and 70.

  As shown in FIGS. 4 and 6, a bracket 76 is fixed to the outdoor side of the connecting beam 57b. The bracket 76 is formed of a steel plate to have an L-shaped cross section, and is provided so as to protrude from the connecting beam 57b to the indoor side. The bracket 76 has a fixing portion 76a that is welded and fixed to the indoor side surface (of the web) of the connecting beam 57b, and a support portion 76b that extends (extends) indoors from the upper end portion of the fixing portion 76a. In addition, you may fix the fixing | fixed part 76a to fasteners, such as a volt | bolt, to the connection beam 57b.

  The upper surface of the support portion 76b is set at the same height as the upper surface of the connecting beam 57b. The width of the support portion 76b, specifically, the length in the indoor / outdoor direction (in other words, the length in the direction in which the two extended roof frames 60 and 70 are arranged) is smaller than the width of the connecting beam 57b. Is about half the width of the connecting beam 57b.

  Further, the bracket 76 is provided with triangular plate-shaped reinforcing portions 76c (reinforcing ribs) that connect the fixing portion 76a and the supporting portion 76b to both ends in the width direction. The support strength of the bracket 76 is enhanced by the reinforcing portion 76c.

  A plurality of brackets 76 are arranged at predetermined intervals along the longitudinal direction of the connecting beam 57b. On the support portion 76b of each bracket 76, an opposing beam 71a of the extended roof frame 70 is provided. The supported portions 74 of the opposing beams 71a are placed in a state of straddling the support portions 76b of the brackets 76, and are fixed to the support portions 76b by bolts 84 in the placed state. Specifically, the bolt 84 is inserted into a hole 74a formed in the supported portion 74 and a hole 94 formed in the support portion 76b, and is welded and fixed to the back surface of the support portion 76b in the inserted state. The nut 95 (welding nut) is fastened.

  On the other hand, the opposing beam 61b (supported portion 64) of the overhanging roof frame 60 is provided on the connecting beam 57b. The supported portion 64 is placed on the outdoor side portion of the upper surface of the connecting beam 57b (upper flange), and the indoor side portion of the upper surface of the connecting beam 57b is supported by the supported portion 64 (and the supported beam 71a). The portion 74) is a non-mounting portion 97 on which no portion is placed. More specifically, the supported portion 64 is placed so as to occupy approximately half of the upper surface of the connecting beam 57b on the outdoor side, and therefore approximately half of the indoor side of the upper surface of the connecting beam 57b is not mounted. It has become.

  Here, the non-mounting portion 97 is formed by placing the facing beam 71a of the overhanging roof frame 70 on the bracket 76 that protrudes indoors from the connecting beam 57b. That is, in this building 10, since one of the extended roof frames 60 and 70 (the opposed beam 71a) is not placed on the connecting beam 57b, each of the extended roof frames 70 and 70 is extended on the connecting beam 57b. An area in which neither of the roof frames 60 and 70 is placed is generated, and the area is a non-placed portion 97.

  The supported portion 64 is fixed to the connection beam 57b by a plurality of bolts 66 while being placed on the connection beam 57b (non-mounting portion 97). Specifically, the bolt 66 is inserted into a hole 64a formed in the supported portion 64 and a hole 92 formed in the upper flange of the connecting beam 57b, and welded to the lower surface of the upper flange in the inserted state. Fastened to a fixed nut 93 (welding nut).

  Incidentally, in the building 10 of the present embodiment, a solar panel (not shown) is installed on the roof portion 13, and a support bracket 98 that supports the load of the solar panel (corresponding to equipment) from below is provided on the connecting beam 57b. Is provided. That is, in this building 10, in addition to the above-mentioned two overhanging roof frames 60 and 70 being supported by the connecting beam 57b, the support bracket 98 is supported.

  The support bracket 98 has a vertical plate portion 98a and a horizontal plate portion 98b formed of a steel plate having an L-shaped cross section. The lower end portion of the vertical plate portion 98a is fixed to the upper surface of the connecting beam 57b by welding. The horizontal plate portion 98b extends from the upper end portion of the vertical plate portion 98a toward the outdoor side. Further, the support bracket 98 is provided with a pair of rectangular flat plate-like reinforcing plate portions 98c that connect the vertical plate portion 98a and the horizontal plate portion 98b to both ends in the width direction. The support strength of the support bracket 98 is enhanced by these reinforcing plate portions 98c. The lower end portion of each reinforcing plate portion 98c is fixed to the upper surface of the connecting beam 57b by welding. The support bracket 98 corresponds to a device support portion.

  The support bracket 98 is disposed on the non-mounting portion 97 on the upper surface of the connecting beam 57b. In this case, the support bracket 98 is arranged side by side in the width direction of the facing beam 61 (supported portion 64) of the overhanging roof frame 60 and the connecting beam 57b, and interferes with the facing beam 61 (supported portion 64). Has been avoided. Specifically, the support bracket 98 is disposed at a substantially central portion in the width direction (short direction) on the connecting beam 57 b and is in a position close to the supported portion 64. The support bracket 98 may be disposed in contact with the supported portion 64.

  A plurality of support brackets 98 are arranged on the connecting beam 57b at a predetermined interval along the longitudinal direction thereof. Specifically, the support bracket 98 is disposed at the same position as the small beams 62 and 72 of the extended roof frames 60 and 70 in the longitudinal direction of the connecting beam 57b.

  The lower part of the anchor bolt 101 extending vertically is fixed to the horizontal plate part 98 b of the support bracket 98. A base 99 provided on the brazing material 79 is fixed to the upper portion of the anchor bolt 101. The gantry 99 is provided at a plurality of locations on the wood 79. On the plurality of mounts 99, support rails 102 are provided so as to be bridged. A plurality of support rails 102 are arranged so as to be parallel to each other, and a solar panel (not shown) is installed so as to span the plurality of support rails 102.

  Note that a hole 104 is formed in the base plate 77 and the roof heat insulating material 78 above the connecting beam 57 so as to correspond to the location of the support bracket 98 in order to avoid interference with the support bracket 98.

  Next, the manufacturing procedure of the building 10 will be described. Here, it demonstrates based on FIG. 7 focusing on the manufacture procedure regarding the roof overhang | projection part 32. As shown in FIG. FIG. 7 is an explanatory diagram for explaining the manufacturing procedure of the roof overhanging portion 32.

  First, in a manufacturing factory, each building unit 20 which comprises the building main body 12 is manufactured. At this time, the unit roof frame 40 is installed on each building unit 20 constituting the second floor portion 15. A bracket 83 is attached on the ceiling beam 22 of the building unit 20 that is arranged adjacent to the balcony 16 (in other words, forms the living room 24).

  In the manufacturing factory, as shown in FIG. 7A, in addition to the building unit 20, the overhang frame 55 and the overhang roof frames 60 and 70 constituting the roof overhang portion 32 are manufactured. The brackets 76 are welded and fixed to the connecting beam 57b of the overhang frame 55, and the support brackets 98 are welded and fixed. Of the extended roof frames 60 and 70, the extended roof frame 60 on the outdoor side is assembled in advance to the extended frame 55.

  After manufacturing the building unit 20, the overhang frame 55 (including the overhang roof frame 60), and the overhang roof frame 70, they are transported to a construction site by a truck or the like.

  At the construction site, each building unit 20 is first installed at a predetermined position, and each building unit 20 is connected to each other via a connecting member (such as a docking plate). After finishing the work, as shown in FIG. 7B, the work of assembling the overhanging frame 55 to the building unit 20 is performed. This operation is performed while the overhang frame 55 is suspended and supported by a crane.

  After assembling the overhanging frame 55 to the building unit 20, an operation of installing the overhanging roof frame 70 on the overhanging frame 55 is performed as shown in FIG. This operation is also performed while the extended roof frame 70 is suspended and supported by a crane. At the time of this installation, the facing beam 71b of the extended roof frame 70 is placed so as to straddle on the support portion 76b of each bracket 76, and the bolts 84 are placed on each bracket 76 (support portion 76b) in the placed state. Fix it. Further, the facing beam 71 a is placed on the bracket 83 fixed to the ceiling beam 22 of the building unit 20, and is fixed to the bracket 83 with a bolt 85 in the placed state. Thereby, the extended roof frame 70 is assembled to the extended frame 55 (and the building unit 20).

  Thereafter, an operation of assembling the eaves top plate 51 and the like to the overhanging frame 55 is performed. In addition, the base plate 77 is spread on the roof frames 40, 60, and 70, and the roof heat insulating material 78 and the roofing material 79 are laid on the base plate 77. Furthermore, the operation | work which installs the parapet 31 is performed. By performing these operations, the roof portion 13 is formed, and the building 10 is constructed. The base plate 77 and the roof heat insulating material 78 may be assembled on the roof frames 40, 60, 70 in advance at the manufacturing factory.

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

  Adjacent overhanging roof frames 60 and 70 are each supported by the connecting beam 57b of the overhanging frame 55, and the bracket 76 is fixed to the connecting beam 57b so as to protrude from the connecting beam 57b to the indoor side. . The overhanging roof frame 70 (corresponding to one roof frame) is supported on the bracket 76, and the overhanging roof frame 60 (corresponding to the other roof frame) is mounted on the connecting beam 57b. It was made to support in the mounted state. In this case, as the extended roof frame 70 is not placed on the connecting beam 57b, a wide area (the non-placed portion 97) where the extended roof frames 60 and 70 are not placed on the connecting beam 57b is secured. can do. Accordingly, the adjacent extended roof frames 60 and 70 are supported by the common connecting beam 57b, and members other than the extended roof frames 60 and 70 can be supported on the connecting beam 57b. It becomes.

  Specifically, a support bracket 98 that supports the load of the solar panel installed on the roof portion 13 is placed and supported on the non-placement portion 97 in the connecting beam 57b. Thereby, the adjacent extended roof frames 60 and 70 are each supported by the common connecting beam 57b, and the load of the solar panel can be further supported by the connecting beam 57b.

  One of the adjacent extended roof frames 60 and 70 is placed on and supported by the bracket 76, and the other extended roof frame 60 is placed and supported on the connecting beam 57b. Therefore, only the bracket 76 that supports one of the adjacent extended roof frames 60 and 70 need be provided on the connecting beam 57b. Therefore, the number of brackets can be reduced as compared with the case where the brackets supporting the both extended roof frames 60 and 70 are provided on the connecting beams 57b. Thereby, each effect mentioned above can be acquired, aiming at reduction of a number of parts.

  In particular, in the above embodiment, since a plurality of brackets 76 are arranged in the longitudinal direction of the connecting beam 57b, and the overhanging roof frame 70 is supported in a state of straddling the plurality of brackets 76, a configuration is adopted. The effect of reducing the number of parts can be obtained as a great effect.

  The overhanging roof frame 60 is assembled to the overhanging frame 55 at the manufacturing factory (advanced), and the overhanging roof frame 70 is installed (retrofitted) at the construction site. The overhanging roof frame 60 is placed and supported on the connecting beam 57b. In this case, when installing the extended roof frame 70 while suspending and supporting it with a crane or the like at the construction site, the opposing beam 71a of the extended roof frame 70 may be placed on the bracket 76, so that the opposing beam 71a is connected. It is possible to suppress the occurrence of inconvenience such as causing the support bracket 98 to be damaged due to interference with the support bracket 98 fixed in advance on the beam 57b.

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

  (1) In the above-described embodiment, the bracket 76 is provided so as to protrude from the connecting beam 57b to the indoor side, and the extended roof frame 70 (opposite beam 71a) on the indoor side is supported on the bracket 76. By changing this, the bracket 76 may be provided so as to project outward from the connecting beam 57 b, and the outdoor roof frame 60 (opposing beam 61 b) may be supported on the bracket 76. Even in that case, since the extended roof frame 60 is not placed on the connecting beam 57b, the non-mounting portion 97 can be widely secured on the connecting beam 57b. As a result, the support bracket is provided on the connecting beam 57b. 98 can be supported.

  Further, the bracket 76 may be provided on each of the indoor side and the outdoor side of the connecting beam 57b, and the both extended roof frames 60 and 70 may be supported by the brackets 76, respectively. In this case, since neither of the extended roof frames 60 and 70 is placed on the connecting beam 57b, the non-placed portion 97 can be secured more widely on the connecting beam 57b.

  (2) In the above embodiment, the bracket 76 is formed in a short shape, and a plurality of the brackets 76 are arranged at predetermined intervals in the longitudinal direction of the connecting beam 57b. However, by changing this, the bracket 76 is arranged in the longitudinal direction of the connecting beam 57b. You may form in the elongate shape along. In that case, the number of brackets 76 can be reduced.

  (3) Although the bracket 76 is formed in an L shape in the above embodiment, the form of the bracket 76 is not necessarily limited to this. For example, it is conceivable that the bracket 76 is formed in a square tube shape or a U shape.

  (4) In the above embodiment, the overhanging roof frame 70 is assembled to the roof frame 55 (and the building unit 20) at the construction site. You may make it assemble | attach to the roof frame 55. FIG. For example, if the small beams 72 at both ends of the extended roof frame 70 are connected and integrated with the extended beams 56 of the extended frame 55 via connecting members, the extended roof frame 70 is extended at the manufacturing factory. It can be assembled to the frame 55. In this case, since it is not necessary to install the overhanging roof frame 70 at the construction site, the number of construction man-hours can be reduced accordingly.

  (5) In the above embodiment, the support bracket 98 that supports the load of the solar panel is provided on the connecting beam 57b. However, a member other than the support bracket 98 may be provided on the connecting beam 57b. For example, it is conceivable that an outdoor unit (corresponding to a device) of an air conditioner is installed on the roof portion 13, and in that case, a support bracket (corresponding to a device support unit) that supports the load of the outdoor unit is connected. It may be provided on the beam 57b.

  (6) The solar panel may be installed on the roof portion 13 after installation of the building 10. Even in such a case, if the non-mounting portion 97 is formed on the connecting beam 57b by mounting the overhanging roof frame 70 on the bracket 76 at the time of construction, the connecting beam 57b ( A support bracket 98 can be arranged on the non-mounting part 97).

  (7) In the above embodiment, the roof structure of the present invention is applied to the two overhanging roof frames 60 and 70 that are provided side by side in the roof overhanging portion 32, but the two units that are provided side by side on the building unit 20. The present invention may be applied to the roof frame 40. For example, as a roof configuration on the building unit 20, a support beam is bridged between a pair of facing (long side) ceiling beams 22 of the building unit 20, and two adjacent roof frames 40 are sandwiched between the support beams. A configuration in which the supporting beams are commonly supported can be considered. Therefore, the present invention may be applied to such a configuration.

  (8) In the said embodiment, although the roof structure of this invention was applied to the roof part 13 which comprises a land roof, for example, this invention is applied to the roof part (slope roof part) which comprises inclined roofs, such as a gable roof and a dormitory roof. May be applied. In the inclined roof portion, it is conceivable that the roof frames are provided side by side along the roof inclination. In this case also, when the support beam is arranged between the roof frames, the roof structure of the present invention is provided. Can be applied.

  (9) Although the application example to the unit type building has been described in the above embodiment, the present invention can be applied to a building having another structure such as a building constructed by a steel frame assembling method.

  DESCRIPTION OF SYMBOLS 10 ... Building, 13 ... Roof part, 17 ... Outer wall, 18 ... Window part as opening part, 20 ... Building unit, 32 ... Roof overhang part, 40 ... Unit roof frame, 52 ... Shutter device, 55 ... As support frame , Overhanging frame, 56 ... overhanging beam, 57 ... linking beam, 57b ... linking beam as support beam, 60 ... overhanging roof frame as roof frame, 70 ... overhanging roof frame as roof frame, 76 ... bracket , 97... Non-mounting portion, 98... Support bracket as a device support portion.

Claims (5)

Applies to buildings with solar panels on the roof,
A plurality of roof frames that are provided side by side and support the base plate from below,
A roof structure of a building that includes a supporting beam that extends along a boundary between adjacent roof frames and supports the load of each of the roof frames,
A bracket is fixed to the support beam so as to protrude from the support beam in the direction in which the roof frames are arranged.
On the bracket is supported in a state where the roof frame is placed ,
A part of the upper surface of the support beam is a non-mounting portion where none of the adjacent roof frames is mounted,
On the non-mounting portion, a roof structure for a building is provided, wherein a device support portion for supporting the load of the solar panel from below is provided . The bracket is fixed to the support beam so as to protrude from the support beam on either side of the arrangement direction,
One of the adjacent roof frames is supported in a state of being placed on the bracket,
The roof structure of a building according to claim 1, wherein the other roof frame is supported in a state of being placed on the support beam. A part of the roof part is a roof overhanging part projecting to the outdoor side from the outer wall,
The roof overhang includes the adjacent roof frames and overhang frames that support the roof frames, respectively.
The overhang frame has a plurality of overhanging beams provided on the outdoor side of the outer wall, and a plurality of connecting beams provided in connection with the overhanging beams, respectively.
The plurality of connecting beams are provided at positions separated from the outer wall, and the connecting beam located closest to the outer wall among the connecting beams is the support beam,
The adjacent roof frames are arranged side by side in the extending direction of the roof extending portion, and are arranged so that the connecting beam is located at the boundary portion of each roof frame,
The building roof structure according to claim 1 or 2 , wherein the bracket is fixed to the connecting beam, and the roof frame is placed on the bracket. The outer wall is provided with a shutter device that opens and closes an opening provided in the outer wall,
The shutter device is disposed so that at least a part thereof is embedded in the roof overhanging portion, and is positioned between the connection beam and the outer wall closest to the outer wall in the disposed state. The building roof structure according to claim 3 . A support frame for supporting the adjacent roof frame;
The support frame has the support beam provided at the boundary between the adjacent roof frames,
The bracket is fixed to the support beam so as to protrude from the support beam on either side of the arrangement direction,
One of the adjacent roof frames is supported in a state of being placed on the bracket,
The other roof frame is supported in a state of being placed on the support beam ,
The device support part is fixed to the support beam in advance in a manufacturing factory,
The other roof frame is assembled to the support frame in a state of being previously placed on the support beam in a manufacturing factory,
The building roof structure according to any one of claims 1 to 4 , wherein the one roof frame is installed by being placed on the bracket at a construction site.

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