JP2013221295A - Roof structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof structure of a building capable of reducing the number of man-hours for construction associated with construction of an attic boundary wall.SOLUTION: A plurality of roof trusses 30 supporting a sheathing roof board 40 from below is horizontally arranged on a building body 11 of a building 10. Between two roof trusses 30 adjacent to each other, an attic boundary wall 20 is arranged in parallel to the roof trusses 30 in plan view. The attic boundary wall 20 includes: a boundary wall 41; and a pair of gypsum boards 42 arranged on both sides respectively across the boundary wall 41. Two roof trusses 30A and 30B adjacent to each other across the attic boundary wall 20 are connected with each other via a plurality of lateral frame members 67. Each of the lateral frame members 67 is provided over an upper part of the attic boundary wall 20. Each of the lateral frame members 67 is connected to the boundary wall 41 of the attic boundary wall 20.

Description

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

  As a roof structure of a building, a plurality of roof trusses are arranged side by side on the main body of the building at predetermined intervals, and roofs such as field boards are installed on the plurality of roof trusses. (See, for example, Patent Document 1). In this type of roof structure, the roof trusses are connected to each other via a connecting material such as a connecting material or a cloud line for the purpose of preventing the roof trusses from falling. Such a connecting material is connected to each roof truss inside the truss so as not to obstruct the installation of the field plate on the roof truss.

  By the way, when a building consists of an apartment house having a plurality of dwelling units, a boundary wall is provided between adjacent dwelling units. The boundary wall is for ensuring fireproof performance that suppresses the spread of fire between dwelling units, soundproof performance that suppresses sound leakage between dwelling units, and the like, and is provided not only in the living room space but also in the attic space. Here, in the above-described roof structure including the roof truss, when a boundary wall is provided in the attic space, it is considered that the boundary wall (hereinafter referred to as the attic boundary wall) is constructed using, for example, a roof truss. Specifically, it is conceivable that an attic wall is constructed by affixing a gypsum board having fire resistance on both sides sandwiching a roof truss.

JP 2008-223299 A

  In the attic wall using the roof truss described above, since the connecting material is arranged inside the truss, when attaching the gypsum board on both sides of the roof truss, the gypsum board should not be interfered with the connecting material. A machining operation for providing a notch occurs. For this reason, there is a concern that the number of construction man-hours will increase. In addition, after the gypsum board is attached to the roof truss, there is a risk that a gap will occur between the gypsum board and the connecting material in the notch, in which case the gap is closed with a fireproof material such as rock wool. Can occur. For this reason, there is a concern that the number of man-hours for construction will increase.

  This invention is made | formed in view of the said situation, and makes it the main objective to provide the roof structure of the building which can aim at reduction of a construction man-hour when constructing an attic boundary wall.

  In order to solve the above-described problem, the roof structure of the building of the first invention is provided side by side on the building body, and includes a plurality of roof trusses that support the ground plate placed thereon and two adjacent roof trusses. An attic wall disposed between and at least in parallel with the roof truss in a plan view, the roof structure of the building is provided across the attic wall and the attic wall A truss connecting member that connects the two roof trusses adjacent to each other, and the attic boundary wall includes a boundary wall frame and a pair of wall members provided on both sides of the boundary wall frame, The truss connecting material is connected to the field wall frame.

  According to the present invention, the roof trusses adjacent to each other with the attic wall interposed therebetween are connected to each other through the truss connecting material, and the field wall frame of the attic boundary wall is connected to the truss connecting material. That is, the three members of the two roof trusses and the attic wall are connected to each other via the truss connecting material. Therefore, these three parties are prevented from falling. And since this truss connection material is provided straddling the upper part of an attic boundary wall, in attaching a wall surface material, such as a gypsum board, to a field wall frame in an attic boundary wall, a truss connection material does not become obstructive. Therefore, when attaching the wall material to the field wall frame, it is not necessary to perform a processing operation to form a notch in the wall material to avoid interference with the truss connecting material. Can be reduced.

  By the way, usually, a room boundary wall is provided below the attic boundary wall. That is, the living room boundary wall that partitions the living room spaces of the adjacent dwelling units and the attic boundary wall that partitions the attic spaces of the adjacent dwelling units are provided side by side. Here, even when the above-described truss connecting material is arranged below the attic wall, it is possible to avoid the truss connecting material from interfering with the wall surface material. However, in this case, since the truss connecting material is disposed at the boundary between the living room boundary wall and the attic boundary wall, the continuity of each boundary wall is cut by the truss connecting material. Therefore, it is disadvantageous in terms of fire resistance. In this regard, according to the above-described configuration in which the truss connecting material is disposed above the attic boundary wall, the continuity between the attic boundary wall and the living room boundary wall can be ensured. Can be obtained.

  In the roof structure of the building of the second invention, in the first invention, the roof truss includes an upper chord material and a lower chord material, and the field board is placed on an upper surface portion of the upper chord material, The field wall frame includes a diagonal member extending in parallel with the upper chord member and having an upper surface portion set at a position lower than an upper surface portion of the upper chord member, and the truss connecting member is disposed on the diagonal member. It is mounted and connected to the diagonal member, and both end portions are respectively connected to the side portions of the upper chord members of two adjacent roof trusses across the attic wall.

  According to the present invention, both ends of the truss connecting material are connected to the side portions of the upper chord material of the two roof trusses adjacent to each other across the attic wall, so that the truss connecting material is at the same height position as the upper chord material. It becomes possible to arrange in. Therefore, for example, it is possible to install the field board across the upper chord material and the truss connecting material.

  The roof structure of a building according to a third aspect is the mounting structure according to the second aspect, wherein the upper surface portion of the truss connecting material is located on the same plane as the upper surface portion of the upper chord material, and the field board is placed thereon. It is a mounting surface part.

  ADVANTAGE OF THE INVENTION According to this invention, the truss connection material which is a connection member which connects an attic wall and a roof truss can be combined as a support member for mounting a field board. Therefore, it becomes possible to achieve multi-functionality of the truss connecting material. Moreover, since the load of a field board can be transmitted to an attic wall through a truss connection material, a part of load of a field board can be supported also by an attic wall. Therefore, it can suppress that the support strength of a field board falls only in the installation location of an attic wall.

  In the roof structure of the building of the fourth invention, in the second or third invention, the side chords facing each other in the upper chord material of each roof truss adjacent to each other across the attic wall are respectively along the upper chord material. In this embodiment, the inclined frame member extending in the roof inclination direction is fixed, a plurality of the truss connecting members are arranged at predetermined intervals along the roof inclination direction, and both end portions are respectively connected to the inclined frame members. It is characterized by that.

  According to the present invention, the inclined frame members are fixed to the side portions of the upper chord members of the roof trusses adjacent to each other with the attic wall interposed therebetween, and a plurality of truss connecting members are arranged at predetermined intervals between the inclined frame members. It is laid over. In this case, both ends of each of the truss connecting members are connected to the inclined frame member, and a roof frame is constructed by the plurality of truss connecting members and the inclined frame members. Upper chords are connected together. Therefore, roof trusses can be firmly connected. In addition, since the roof frame is also connected to the field wall frame of the attic boundary wall, the support strength of the attic boundary wall can be increased.

  The roof structure of a building according to a fifth aspect of the present invention is the roof structure of any one of the second to fourth aspects, wherein the base plate is supported from below on a portion different from the connecting portion where the truss connecting material is connected on the diagonal member. The base plate support material to be attached is attached.

  According to the present invention, in order to place the truss connecting material on the diagonal of the attic wall, in the configuration where the upper surface of the diagonal is lower than the upper surface of the upper chord of the roof truss on which the field plate is placed, Since the base plate support member is provided on the diagonal member, the base plate can be supported by the support member. In other words, the load of the field board can be supported by the attic wall through the field board support material. Therefore, it can suppress that the support strength of a field board falls only the installation part of an attic wall.

  The roof structure of the building of the sixth invention is the roof structure of the fifth invention, wherein a plurality of the base plate support members and the truss connecting members are provided on the diagonal member, respectively. A plurality of truss connecting members are alternately arranged along the longitudinal direction of the diagonal member.

  According to the present invention, a plurality of truss connecting members and a plurality of base plate support members are alternately arranged along the longitudinal direction of the diagonal member (in other words, the inclined direction of the roof) on the diagonal member of the field wall frame. Therefore, the arrangement interval (pitch) of each truss connecting member can be defined by the length of the base plate support member (specifically, the length in the roof inclination direction). In this case, when installing each base plate support material on the diagonal material of the field wall frame at the time of construction, and then placing each truss connecting material between adjacent base plate support materials on the diagonal material, The installation position of the truss connecting material is automatically determined. This eliminates the need for positioning the connecting member when installing the truss connecting member. Thereby, in the structure which installs a some truss connection material, the installation operation | work of a truss connection material can be made easy.

  In addition, a roof panel on the boundary wall is configured to include a plurality of truss connecting members and a base plate provided across the truss connecting members, and the roof panel is bridged between adjacent roof trusses. Thus, in a configuration in which a plurality of truss connecting materials are arranged between the roof trusses, the roof panels on the boundary walls are bridged between the roof trusses. Therefore, it is possible to prevent the roof panel on the boundary wall from slipping down along the slope of the roof. For this reason, when installing the roof panel on the boundary wall, there is no need to support the roof panel so as not to slip off, and the installation work can be suitably performed.

  A roof structure of a building according to a seventh aspect of the present invention is the roof structure of any one of the second to sixth aspects, wherein a plurality of the truss connecting members are arranged at predetermined intervals in the roof inclination direction along the upper chord material of the roof truss. And a roof panel on the field wall is configured including the plurality of truss connecting materials and a field plate provided on the truss connecting materials, and in the roof panel on the field wall, The field plate has a pair of hook portions extending laterally with respect to both ends of the truss connecting material and hooked on the upper chord material of the two roof trusses adjacent to each other across the attic wall. Each of the hook portions is hooked on the upper chord member, and the roof panel on the field wall is bridged between the two roof trusses.

  According to the present invention, because the roof panel on the boundary wall is configured to include a plurality of truss connecting materials and the field plate, by manufacturing the roof panel on the boundary wall in advance in the manufacturing factory, A plurality of truss connecting members can be arranged at a time between the roof trusses simply by installing the roof panel on the boundary wall between two adjacent roof trusses with the attic boundary wall in between. Thereby, it is in the structure which uses multiple truss connection materials, and can reduce a construction man-hour greatly.

  In addition, it is possible to bridge the roof panel on the wall between the roof trusses by hooking each hook part provided on the base plate of the roof panel on the wall on each roof truss. It is possible to connect the roof panel on the boundary wall to the roof truss or the attic boundary wall in the handed state. Thereby, construction work can be made even easier.

  The roof structure of a building according to an eighth aspect of the present invention is the structure according to any one of the second to seventh aspects, wherein the truss connecting material is the first truss connecting material, and two adjacent roof trusses without sandwiching the attic wall. It has the 2nd truss connection material which connects the side parts of upper chord material.

  According to the present invention, the side surfaces of the upper chord members of adjacent roof trusses are connected via the second truss connecting material without sandwiching the attic wall. That is, with respect to the connection of adjacent roof trusses without sandwiching the attic boundary wall, the side portions of the upper truss members of the truss are connected via the coupling material in the same manner as the connection of the adjacent roof trusses with the attic boundary wall interposed therebetween. It has a configuration. In this case, since the connection structure of adjacent roof trusses can be made the same regardless of whether an attic wall exists between them, it can be said that it is an advantageous structure from the viewpoint of construction workability.

The front view which shows the roof part periphery in a building. The perspective view which shows the structure of a roof part. (A) is a front view which shows the structure of an attic wall, (b) is a cross-sectional view which shows the structure. The rear view of a roof panel on a boundary wall. Sectional drawing which shows the installation structure of a roof panel on a boundary wall. The front view which shows the state in which the roof truss and the attic wall were located in a line. The perspective view which shows the structure of the roof part in other embodiment. The rear view of the roof panel on a field wall in other embodiments.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, an apartment house such as an apartment having a plurality of dwelling units is assumed as a building. In the present embodiment, the building is embodied as a steel house constructed by a framed wall construction method. 1 is a front view showing the periphery of the roof portion in the building, and FIG. 2 is a perspective view showing the configuration of the roof portion 12. FIG.

  As shown in FIG. 1, the building 10 includes a building main body 11 and a roof portion 12 provided above the building main body 11. A plurality of dwelling units 14 are provided in the building 10, and each dwelling unit 14 is arranged side by side along the column direction of the building 10 (hereinafter also referred to as a building column direction). Each dwelling unit 14 includes a living room space 15 formed in the building main body 11 and an attic space 16 formed in the roof portion 12 as a dwelling unit space.

  A boundary wall 18 (door boundary wall) is provided between the adjacent dwelling units 14. The boundary wall 18 partitions adjacent dwelling units 14 from each other. The boundary wall 18 ensures fire resistance and soundproof performance between the adjacent dwelling units 14. The boundary wall 18 is provided so as to extend vertically from the floor surface of the living room space 15 to the attic space 16, and the living room boundary wall 19 that partitions the living room spaces 15 of the adjacent dwelling units 14 and the attic space of the adjacent dwelling units 14. And an attic barrier wall 20 that partitions 16 from each other.

  As shown in FIG. 2, the building body 11 is provided with a plurality of outer wall panels 21 along the outer periphery thereof. In addition, illustration of the outer wall panel 21 is abbreviate | omitted in FIG. The outer wall panel 21 includes an outer wall surface material 22 and an outer wall frame 23 fixed to the back surface side thereof. The outer wall frame 23 includes a plurality of studs 24 extending in the vertical direction and a pair of runners (not shown) that connect the upper and lower ends of the studs 24 in the horizontal direction. On the outer wall panel 21, an eaves girder 25 extending in the building girder direction is placed across the plurality of outer wall panels 21.

  The roof portion 12 is configured as a gable roof. The roof portion 12 includes a plurality of roof trusses 30 provided side by side along the building girder direction on the building main body 11, and a plurality of field boards 40 provided over the roof trusses 30. In FIG. 2, for the sake of convenience, the field plate 40 is not shown for the inclined roof portion 28 on one side (the front side of the drawing in FIG. 2) of the inclined roof portions 28 on both sides of the roof portion 12 across the ridge 27. ing.

  The roof truss 30 includes a pair of upper chord members 31 extending in different directions along the inclination direction of the roof, a lower chord member 32 extending over the lower portions of the upper chord members 31, and an upper chord member 31 and a lower chord member 32. And the truss members 31 to 34 are connected to each other. The roof truss 30 has a substantially isosceles triangular shape as a whole, and is configured as a so-called king post truss.

  The upper chord member 31, the lower chord member 32, the diagonal member 33, and the bundle member 34 are all made of lip groove steel (so-called C-shaped steel). The upper chord member 31 and the lower chord member 32 are arranged with the groove openings in the lateral direction (in other words, the short direction of the roof truss 30), and are connected to each other via a gusset plate 35. Each upper chord member 31 has a lower end extending obliquely downward from the lower chord member 32, and the extended portion constitutes an eave portion of the roof portion 12. The roof truss 30 having such a configuration is installed in a state where the lower chord material 32 is placed on the eaves girder 25, and the lower chord material 32 is fixed to the eaves girder 25 via a connecting metal fitting 39.

  On the building main body 11, the end walls 37 are respectively installed at both ends of the building girder direction. The end wall 37 is installed in a state of being placed on the outer wall panel 21, and is arranged in a direction parallel to the roof truss 30 in plan view. The end wall 37 is formed in a substantially isosceles triangular shape similar to the roof truss 30, and its size (size in front view) is slightly smaller than that of the roof truss 30.

  The attic wall 20 is provided between two adjacent roof trusses 30 and is arranged in a direction parallel to the roof truss 30 in plan view. FIG. 3 shows the configuration of the attic wall 20. 3A is a front view showing the configuration of the attic wall 20 and FIG. 3B is a cross-sectional view showing the same configuration. FIG. 3B corresponds to a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 2 and 3, the attic wall 20 is formed in the same isosceles triangle shape as the roof truss 30. The size of the attic wall 20 (the size of the wall front view) is slightly smaller than that of the roof truss 30 and is formed in the same size as the end wall 37.

  The attic boundary wall 20 includes a boundary wall frame 41, a pair of gypsum boards 42 provided on both sides of the boundary wall frame 41, and rock wool 43 provided inside the boundary wall frame 41. The boundary wall frame 41 includes a pair of diagonal members 45 that extend in different directions along the inclination direction of the roof, and a cross member 46 that extends across the lower end of each diagonal member 45. The cross members 46 are connected to each other to form a substantially isosceles triangle shape as a whole. The diagonal members 45 and the cross members 46 are each made of channel steel, and are arranged with the respective groove openings facing inward. In the boundary wall frame 41, unlike the roof truss 30, the diagonal member 45 does not extend obliquely downward than the cross member 46.

  The boundary wall frame 41 further includes a plurality of vertical members 47 provided between the diagonal members 45 and the cross members 46 and connecting the diagonal members 45 and the cross members 46 up and down. The vertical member 47 is made of lip groove steel (so-called C-shaped steel), and its width dimension (specifically, the length of the web portion) is greater than the width dimension of the cross member 46 and the diagonal member 45 (specifically, the length of the web portion). Is also getting smaller.

  The longitudinal member 47 is composed of two longitudinal members 47a and 47b provided with the web portions facing each other, and a plurality of sets of longitudinal members 47a and 47b are arranged in the transverse width direction of the attic wall 20 (of the transverse member 46). Are arranged at predetermined intervals along the longitudinal direction. In this case, the two vertical members 47 a and 47 b are arranged with their positions shifted in the thickness direction of the attic wall 20.

  The gypsum board 42 has excellent fireproof performance and sound insulation performance, and is formed to have the same size and the same shape as the field wall frame 41. One of the gypsum boards 42 on both sides of the boundary wall frame 41 is fixed to the flange portion of the vertical member 47a in the boundary wall frame 41 with a screw or the like, and the other is fixed to the flange portion of the vertical member 47b with a screw or the like. ing. Here, the gypsum board 42 corresponds to a wall material.

  The rock wool 43 is a fibrous member having excellent fire resistance and soundproof performance. The rock wool 43 is arranged in a plurality of frame spaces partitioned by the frame members 45 to 47 in the boundary wall frame 41. Thereby, the fireproof performance and soundproof performance of the attic wall 20 are improved. In addition, in FIG. 2, illustration of the rock wool 43 is abbreviate | omitted for convenience.

  On the diagonal member 45 of the boundary wall frame 41, a plurality (specifically, four) of base plate support members 49 are provided along the diagonal member 45 at a predetermined interval. The base plate support member 49 is made of a lip groove steel (so-called C-shaped steel) and has a long shape along the diagonal member 45. Each base plate support member 49 is arranged on the diagonal member 45 with the groove opening directed to one side in the thickness direction of the attic wall 20 and fixed to the upper surface of the diagonal member 45 with screws or the like. Yes. In addition, among the field plate support members 49, a part of the field plate support member 49 arranged closest to the eaves side extends obliquely downward from the lower end portion of the diagonal member 45, and this extended portion An eaves portion of the roof portion 12 is configured.

  The attic wall 20 is installed on the living room wall 19 as described above. Here, the room boundary wall 19 will be briefly described. The room boundary wall 19 is formed in a rectangular plate shape having the same lateral width as the attic wall 20. The living room boundary wall 19 includes a boundary wall frame 51, a pair of gypsum boards 52 provided on both sides of the boundary wall frame 51, and rock wool (not shown) incorporated in the frame of the boundary wall frame 51. The boundary wall frame 51 includes a plurality of vertical members 55 provided side by side, and a pair of horizontal members 56 that are respectively bridged between the upper and lower ends of the vertical members 55. 56 are connected to each other. Specifically, each vertical member 55 is arranged directly below the vertical member 47 of the attic wall 20 and is provided side by side with each vertical member 47.

  The gypsum board 52 has excellent fire resistance and sound insulation performance. Each gypsum board 52 has the same size and the same shape as the field wall frame 51, and is fixed to the field wall frame 51 with screws or the like. A wall finishing material such as a cloth (not shown) is attached to the surface of the gypsum board 52, and the finished surface of the living room boundary wall 19 is formed by this wall finishing material.

  In the state where the attic boundary wall 20 is installed on the living room boundary wall 19, the cross member 46 of the boundary wall frame 41 and the cross member 56 of the boundary wall frame 51 (specifically, the cross member 56 at the upper end of the boundary wall frame 51) Are fixed to each other with screws or the like, whereby the attic wall 20 and the living room wall 19 are connected to each other. In this case, the living room boundary wall 19 and the attic boundary wall 20 are continuously arranged in the vertical direction, and the boundary wall 18 extending continuously from the floor surface of the living room space 15 to the attic space 16 is constructed.

  Further, in the installed state of the attic boundary wall 20, the diagonal member 45 of the boundary wall frame 41 is arranged in a direction extending in parallel to the upper chord member 31 of the roof truss 30. Further, the height position of the upper surface of the diagonal member 45 (specifically, the upper flange portion) is lower than the height position of the upper surface of the upper chord material 31 (specifically, the upper flange portion). The upper surface of the diagonal member 45 (specifically, the upper flange portion) is positioned below the upper surface of the upper chord member 31 in the direction orthogonal to the inclined surface (roof inclined surface) (see FIG. 5). In addition, the upper surface of the base plate support member 49 (specifically, the flange portion) of the boundary wall frame 41 is positioned at the same height as the upper surface of the upper chord member 31 of the roof truss 30, and more specifically, the upper surface of the upper chord member 31. doing.

  As described above, on the building body 11, the plurality of roof trusses 30, the pair of end walls 37, and the plurality of attic walls 20 are provided side by side along the building girder direction. These members 20, 30, and 37 are arranged in parallel to each other. These members 20, 30, and 37 are arranged at a predetermined interval, and specifically, are arranged at equal intervals. However, these members 20, 30, and 37 are not necessarily arranged at equal intervals, and the arrangement interval (pitch) of the members 20, 30, and 37 may be arbitrary as long as the strength of the roof can be secured. A field board 40 is bridged over these members 20, 30 and 37, and a wiping material such as a tile (not shown) is provided on the field board 40.

  The roof trusses 30, the end walls 37, and the attic walls 20 provided side by side in the roof portion 12 are connected to each other via a connecting material for the purpose of preventing falls. Hereinafter, such a connection structure will be described in detail.

  Among the plurality of roof trusses 30, adjacent roof trusses 30 without sandwiching the attic wall 20 are connected to each other via a connecting member 61 and a cloud line 62. The connecting member 61 is a long connecting member that connects adjacent roof trusses 30 in the horizontal direction. The connecting members 61 are respectively disposed on the upper and lower portions of the roof truss 30. Both ends of the connecting member 61 a arranged on the upper portion of the roof truss 30 are connected to the lower surface of the upper chord member 31 of each roof truss 30, and the connecting member 61 b arranged on the lower portion of the roof truss 30 is the lower chord of each roof truss 30. It is connected to the upper surface of the material 32.

  The cloud crossing 62 is a long connecting material that connects the adjacent roof trusses 30 obliquely. Both ends of the cloud cross 62 are connected to the vertical members 47 of the roof trusses 30, respectively. In this case, both the connecting material 61 and the cloud line crossing 62 are connected to the roof truss 30 inside the truss.

  Similarly, the roof truss 30 and the end wall 37 that are arranged adjacent to each other are also connected to each other via the connecting material 61 and the cloud line 62. On the end wall 37, a support member 38 for supporting the field board 40 is provided so as to extend in the direction of the building girder. One end of the support member 38 is connected to the roof truss 30 and the other end is the roof. It extends to the loose side of the part 12. The support plate 38 supports the base plate 40 on the loose side.

  Between the two roof trusses 30 that are adjacent to each other with the attic wall 20 sandwiched therebetween, an upper roof panel 65 is bridged over the attic wall 20. These roof trusses 30 are connected to each other via a ceiling wall panel 65, and the roof wall 20 is connected to the roof panel 65. Hereinafter, the connection configuration of each roof truss 30 and the attic wall 20 through the upper roof panel 65 will be described with reference to FIGS. 4 and 5. 4 is a rear view of the roof panel 65 on the field wall, and FIG. 5 is a sectional view showing an installation configuration of the roof panel 65 on the wall. 5 is a cross-sectional view cut in a direction orthogonal to the inclination direction of the roof (in other words, the longitudinal direction of the upper chord member 31 and the diagonal member 45), and corresponds to a cross-sectional view taken along line BB in FIG.

  In the following description, for the sake of convenience, A and B are attached to the reference numerals of the two roof trusses 30 that are connected via the roof panel 65 on the boundary wall. Further, these roof trusses 30A and 30B are arranged in a state in which the web portions of the upper chord member 31 and the lower chord member 32 face each other.

  As shown in FIG. 4, the field wall top roof panel 65 has a rectangular shape as a whole. The upper roof panel 65 includes a rectangular plate-like base plate 40 and a plurality (specifically, two) roof frames 66 provided on the back side thereof. The ceiling roof panel 65 on the boundary wall is manufactured in advance in a manufacturing factory, thereby reducing the work burden at the construction site. In the following description, for the sake of convenience, A is attached to the reference numeral of the field plate 40 that constitutes the upper roof panel 65 of the boundary wall.

  The roof frame 66 has a rectangular frame shape, and a pair of horizontal frame members 67 extending in parallel with each other along the width direction of the field board 40 and a pair of inclined frames that connect ends of the horizontal frame members 67 to each other. Material 68. Both the horizontal frame material 67 and the inclined frame material 68 are made of lip groove steel (so-called C-shaped steel). Each of the horizontal frame members 67 is arranged with the groove openings directed to one side in the arrangement direction of the horizontal frame members 67, and the inclined frame members 68 are arranged with the groove openings facing each other (FIG. 5). See also). The horizontal frame member 67 and the inclined frame member 68 are connected to each other via a connecting member such as an angle (not shown). Here, the horizontal frame member 67 corresponds to a truss connecting member.

  The two roof frames 66 are arranged at a predetermined interval in the arrangement direction of the horizontal frame members 67. In this case, the horizontal frame members 67 of the respective roof frames 66, a total of four horizontal frame members 67, are arranged side by side, and the inclined frame members 68 of the respective roof frames 66 are arranged in a line.

  The base plate 40A is made of, for example, a particle board. The lateral width of the base plate 40 </ b> A, specifically, the lateral width in the longitudinal direction of the lateral frame member 67 is larger than the lateral width of the roof frame 66 in the same direction. The field board 40A is fixed to the frame 66 with screws or the like in a state in which both end portions in the horizontal width direction extend laterally with respect to the roof frame 66, respectively. In this case, the above-mentioned portion extending from the roof frame 66 in the base plate 40A is an extended portion 70, and this extended portion 70 corresponds to a hook portion. The base plate 40A may be divided into a plurality of pieces as shown in the figure.

  As shown in FIGS. 2 and 5, in the roof panel 65 on the boundary wall, the horizontal frame material 67 extends along the building girder direction, and the inclined frame material 68 is the inclination direction of the roof (the inclined roof portion 28). In a direction extending along the longitudinal direction of the upper truss 31 of the roof truss 30, it is bridged between the adjacent roof trusses 30 </ b> A and 30 </ b> B. In this case, the roof panel 65 on the boundary wall is bridged in a state where the extended portions 70 of the base plate 40A are respectively placed on the upper surfaces of the upper chord members 31 (specifically, the flange portions) of the roof trusses 30A and 30B. Yes.

  In the state where the roof panel 65 on the boundary wall is bridged, the roof frames 66 are respectively disposed between the roof trusses 30A and 30B. In this case, the web portion 68a of each inclined frame member 68 in the roof frame 66 is disposed opposite to the web portion 31a (corresponding to the side surface portion) of the upper chord member 31 of the roof trusses 30A and 30B, and the opposed web portions 31a. 68a are connected to each other by screws or the like. As a result, the roof frame 66 is fixed to the roof trusses 30A and 30B, and the roof trusses 30A and 30B are fixed to each other via the roof frame 66. Each extended portion 70 of the base plate 40A is fixed to the upper surface of the upper chord member 31 of the roof trusses 30A and 30B with screws or the like.

  In the installed state of the roof panel 65 on the boundary wall, the roof frames 66 are arranged on both sides of the diagonal members 33 and the bundle members 34 in the roof trusses 30A and 30B, respectively. That is, in the main wall upper roof panel 65, the position of each roof frame 66 is set at a position where it does not interfere with the diagonal member 33 and the bundle member 34.

  Moreover, the roof panel 65 on the boundary wall is installed in a state of being placed on the attic boundary wall 20. In this case, each horizontal frame member 67 of each roof frame 66 is placed on the diagonal member 45 of the boundary wall frame 41 in the upper roof panel 65. Specifically, the horizontal frame members 67 are disposed on the diagonal members 45 between the base plate support members 49. In this case, the horizontal frame members 67 and the base plate support members 49 are alternately arranged on the diagonal member 45 along the longitudinal direction of the diagonal member 45.

  The horizontal frame member 67 and the base plate support member 49 arranged in a direction intersecting with each other (specifically, orthogonal) are connected to each other via an L-shaped angle member 71. In the angle member 71, one of the two plate portions 71a and 71b having a right angle is fixed to the web portion 67a of the horizontal frame member 67 with a screw or the like, and the other plate portion 71b is fixed to the base plate support member 49. The web portion 49a is fixed with screws or the like. As a result, the horizontal frame member 67 and the base plate support member 49 are connected to each other through the angle member 71. As a result, the roof frame 66 (and thus the upper roof panel 65 on the field wall) and the field wall are connected to each other through the base plate support member 49. The frame 41 is connected.

  In addition, the field plate 40A of the upper roof panel 65 is placed on the upper surface of each field plate support 49 of the attic wall 20 and is fixed to the upper surface of each field plate support 49 with screws or the like. ing.

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

  A horizontal frame member 67 (and thus a roof frame 66) for connecting two adjacent roof trusses 30A and 30B across the attic wall 20 is provided across the upper part of the attic wall 20 and the horizontal frame member 67 is provided for the attic. The wall 20 is connected to the boundary wall frame 41. That is, the three members of the two roof trusses 30 </ b> A and 30 </ b> B and the attic wall 20 are connected to each other via the horizontal frame member 67. For this reason, the horizontal frame member 67 prevents these three members from falling. And since this horizontal frame material 67 is provided straddling the upper part of the attic wall 20, the horizontal frame material 67 may become an obstacle when attaching the gypsum board 42 to the wall frame 41 in the attic wall 20. Absent. Therefore, when attaching the gypsum board 42 to the field wall frame 41, it is not necessary to perform a processing operation for forming a cutout in the gypsum board 42 to avoid interference with the horizontal frame material 67, so that the attic wall 20 is constructed. Therefore, the number of construction steps can be reduced.

  Further, even if the horizontal frame material 67 is arranged below the attic wall 20, it is possible to avoid the horizontal frame material 67 from interfering with the gypsum board 42. Since it will be arranged at the boundary between the boundary wall 19 and the attic boundary wall 20, the continuity of each boundary wall 19, 20 may be broken by the horizontal frame material 67. In that case, it becomes disadvantageous in terms of fire resistance. In this regard, in the configuration in which the horizontal frame member 67 is disposed above the attic boundary wall 20, continuity between the attic boundary wall 20 and the living room boundary wall 19 can be secured, and the gypsum board 42 of each of the boundary walls 19, 20, 52 can be arranged seamlessly up and down. Therefore, the construction man-hour can be reduced when the attic wall 20 is constructed while avoiding the above-mentioned disadvantages.

  The upper surface of the diagonal member 45 of the boundary wall frame 41 is set at a position lower than the upper surface of the upper chord member 31 of the roof truss 30, and the horizontal frame member 67 is placed on the diagonal member 45 and connected to the diagonal member 45. The both end portions were respectively connected to the web portion 31a (corresponding to the side surface portion) of the upper chord member 31 of each roof truss 30A, 30B. In this case, since the horizontal frame member 67 can be disposed at the same height as the upper chord member 31, the base plate 40 can be installed across the upper chord member 31 and the horizontal frame member 67. It becomes.

  By placing the upper surface of the horizontal frame material 67 on the same plane as the upper surface of the upper chord material 31 of the roof truss 30, a mounting surface on which the base plate 40A is mounted was provided. In this case, the horizontal frame member 67 for connecting the attic wall 20 and the roof trusses 30A, 30B can be used as a support member for placing the field board 40A. Multiple functions can be achieved. Moreover, since the load of the field board 40A can be transmitted to the attic wall 20 through the horizontal frame member 67, the attic wall 20 can also support a part of the load of the field board 40A. Therefore, it can suppress that the support strength of the field plate 40 falls only in the installation location of the attic wall 20.

  A plurality of horizontal frame members 67 are arranged at predetermined intervals along the roof inclination direction (longitudinal direction of the upper chord member 31), and the ends of the respective horizontal frame members 67 are connected to each other via the inclined frame member 68. A frame 66 was formed. And each inclination frame material 68 of the roof frame 66 was fixed to the web part 31a of the upper chord material 31 of each roof truss 30A, 30B, respectively. In this case, since the upper chord members 31 of the adjacent roof trusses 30A and 30B are connected via the roof frame 66, the roof trusses 30A and 30B can be firmly connected. Moreover, since the roof frame 66 is connected also to the field wall frame 41 of the attic boundary wall 20, the support strength of the attic boundary wall 20 can also be improved.

  A field board support member 49 that supports the field board 40A from below is attached to a part different from the connection part to which the horizontal frame material 67 is connected on the diagonal member 45 of the boundary wall frame 41. In this case, the upper surface of the diagonal member 45 is lower than the upper surface of the upper chord member 31 on which the field board 40 is placed, and the load of the field board 40A is caused by the attic wall 20 via the field board support member 49. Can be supported. Thereby, it can suppress that the support strength of the field board 40 falls only the installation part of the attic wall 20.

  Since the field wall roof panel 65 is configured to include the plurality of horizontal frame members 67 and the base plate 40A provided across the horizontal frame members 67, the field wall roof panel 65 is manufactured at the manufacturing plant. Then, at the time of construction, a plurality of horizontal frame members 67 can be formed at once by simply installing the roof panel 65 on the boundary wall between two adjacent roof trusses 30A and 30B with the attic boundary wall 20 in between. 30B. Thereby, in the structure which uses the multiple horizontal frame material 67, a construction man-hour can be reduced significantly.

  Further, in the upper roof panel 65 in the boundary wall, the base plate 40A extends laterally with respect to both ends of the horizontal frame member 67 and is paired with the upper truss member 31 of each roof truss 30A, 30B. A portion 70 (corresponding to a hook portion) was provided. Thereby, since each extended part 70 is hooked on the upper chord material 31 of each roof truss 30A, 30B, respectively, the roof panel 65 on the field wall can be bridged between each roof truss 30A, 30B. In some cases, it is possible to connect the upper roof panel 65 to the roof trusses 30A and 30B and the attic wall 20 (the boundary wall frame 41) in such a bridged state. Thereby, construction work can be made even easier.

  A plurality of field plate support members 49 and a plurality of horizontal frame members 67 are provided on the diagonal member 45, and the plurality of field plate support members 49 and the plurality of horizontal frame members 67 are provided along the longitudinal direction of the diagonal member 45. Alternating. In this case, in a state where the roof panel 65 on the field wall is bridged between the roof trusses 30A and 30B, the horizontal frame members 67 are disposed between the adjacent base plate support members 49, so It is possible to prevent the roof panel 65 from slipping along the slope of the roof. For this reason, when installing the roof panel 65 on the boundary wall, it is not necessary to perform a troublesome work of supporting the roof panel 65 so as not to slip off, and the installation work can be suitably performed.

  Since the upper roof panel 65 includes the roof frame 66 formed by connecting the horizontal frame member 67 and the inclined frame member 68 in a rectangular frame shape, the rigidity of the upper roof panel 65 can be increased. Thereby, it can suppress that the trouble that the said roof panel 65 deform | transforms at the time of the installation operation of the roof panel 65 on a boundary wall, or conveyance is produced.

  The horizontal frame member 67 and the base plate support member 49 are arranged so as to intersect (orthogonal) each other, and the web portions 49a and 67a (side portions) of both the members 49 and 67 are interposed via an L-shaped angle member 71. Connected. In this case, the horizontal frame member 67 and the field wall frame 41 are connected to each other through the field board support member 49. Here, the roof panel 65 on the boundary wall is manufactured at the manufacturing factory, and the panel 65 is installed at the construction site to arrange the plurality of horizontal frame members 67 between the roof trusses 30A and 30B. After installing the roof panel 65 on the wall, when the horizontal frame member 67 is connected to the field wall frame 41 (slanting member 45) from above, it is conceivable that the work is difficult because the field plate 40 becomes an obstacle. In this regard, in the configuration in which the horizontal frame member 67 and the field plate support material 49 are connected via the angle member 71, the horizontal frame material 67 and the field plate support material 49 are located below the field plate 40 (attic space). Since the connection work can be performed from the side, it can be said to be a preferable configuration in terms of workability.

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

  (1) In the above embodiment, the horizontal frame member 67 as the truss connecting member is connected to the web portion 31a (corresponding to the side portion) of the upper chord member 31 of each roof truss 30A, 30B. You may connect with the lower surface part (namely, lower flange part) of the upper chord material 31 of roof truss 30A, 30B. If the size of the attic wall 20 is made smaller than that of the above-described embodiment, such a connection configuration can be obtained. That is, it is possible to arrange the horizontal frame member 67 so as to straddle the upper part of the attic wall 20 even in such a connection configuration.

  In this configuration, since the upper surface of the horizontal frame member 67 is disposed at a position lower than the upper surface of the upper chord member 31 of the roof truss 30, a separate baseboard support member is provided on the horizontal frame member 67. The base plate 40 may be placed on the support material. If it does so, even if it is this structure, the baseplate 40 can be supported by the horizontal frame material 67 from the downward direction. Moreover, it is good also as a structure which does not support the baseplate 40 from the downward direction by the horizontal frame material 67, without providing this support material.

  (2) In the above embodiment, the field board support material 49 that supports the field board 40A from below is provided on the attic wall 20, but the field board support material 49 is not necessarily provided. That is, if the field plate 40A can be sufficiently supported only by the horizontal frame member 67, the field plate support material 49 may be omitted. However, since the horizontal frame member 67 is not provided on the eaves side of the roof portion 12, if the field plate 40A is supported only by the horizontal frame member 67, the field plate 40A cannot be sufficiently supported on the eaves side. There is a fear. In view of this point, it is desirable to provide at least the base plate support material 49 on the eaves side among the base plate support materials 49.

  (3) In the above embodiment, the field wall frame 41 of the attic boundary wall 20 is configured differently from the roof truss 30, but the field wall frame may be configured by a roof truss. For example, it is conceivable that the boundary wall frame is constituted by the same king post truss as the roof truss 30 and the size thereof is slightly smaller than that of the roof truss 30. Even in this case, the horizontal frame member 67 that connects the roof trusses 30A and 30B can be arranged across the attic wall and can be connected to the field wall frame of the attic wall.

  (4) In the above embodiment, the distance between the attic wall 20 and the roof truss 30A, and the distance between the attic wall 20 and the roof truss 30B (without the attic wall 20) are adjacent to each other. Although it is the same as the interval, this may be changed. Specifically, as shown in FIG. 6, the distance between the attic wall 20 and the roof truss 30A is P1, the distance between the attic wall 20 and the roof truss 30B is P2, and the adjacent roofs without sandwiching the attic wall 20 therebetween. Assuming that the distance between the trusses 30 is P, the sizes of P1 and P2 may be arbitrary as long as the conditions of P1 + P2 ≦ 2P and 0.5P ≦ P1, P2 ≦ 1.0P are satisfied. As long as this pitch condition is satisfied, the supporting strength of the roof trusses 30A and 30B and the attic wall 20 can be suitably secured. In addition, you may set the magnitude | size of P1 and P2 in the range which does not satisfy | fill this pitch condition.

  (5) In the above embodiment, each horizontal frame member 67 is connected to the web portion 31 a of the upper chord member 31 of the roof trusses 30 </ b> A and 30 </ b> B via the inclined frame member 68, but each horizontal frame is not provided with the inclined frame member 68. The material 67 may be directly connected to the web portion 31a of the upper chord material 31 via an angle member or the like.

  (6) In the above embodiment, the base plate 40, the horizontal frame member 67, and the inclined frame member 68 are unitized as the roof panel 65 on the boundary wall, and the panel 65 is manufactured in advance at the manufacturing factory. Then, the base plate 40, the horizontal frame material 67, and the inclined frame material 68 may be individually installed at the construction site. That is, at the construction site, first, the inclined frame material 68 is attached to the upper chord material 31 of each roof truss 30A, 30B, and then both end portions of each horizontal frame material 67 are connected to the opposing inclined frame materials 68 and the horizontal sides thereof. The frame material 67 may be connected to the field wall frame 41 of the attic boundary wall 20, and finally the base plate 40 may be installed and fixed so as to straddle the horizontal frame material 67. Also in this case, the roof trusses 30A and 30B and the attic wall 20 can be connected to each other through the horizontal frame member 67.

  Even in the case where the members 40, 67, 68 are individually installed in this way, a plurality of field plate support members 49 and a plurality of horizontal frame members 67 are arranged on the diagonal member 45 in the longitudinal direction of the diagonal member 45. In the configuration in which the base plate support members 49 are first arranged on the diagonal member 45 at the time of construction, each side plate support member 49 is then mounted between the adjacent base plate support members 49 on the diagonal member 45. If the frame members 67 are respectively arranged, the installation positions of the horizontal frame members 67 are automatically determined, so that the positioning work of the horizontal frame members 67 can be made unnecessary. Therefore, an increase in construction man-hours can be suppressed.

  In this case, a frame support member that supports the end portion of the horizontal frame member 67 may be provided on the web portion 31a of the upper chord member 31 of each roof truss 30A, 30B. Then, the horizontal frame material 67 can be bridged between the roof trusses 30A and 30B by placing both ends of the horizontal frame material 67 on the frame support members of the roof trusses 30A and 30B. The installation work of the frame material 67 can be facilitated.

  (7) In the above embodiment, the adjacent roof trusses 30 without the attic wall 20 being connected to each other are connected via the connecting material 61 and the cloud line 62 arranged inside the truss. As for the connection, similarly to the connection between the adjacent roof trusses 30A and 30B across the attic wall 20, the web portions 31a (side surfaces) of the upper chord members 31 of the trusses 30 are connected to the horizontal frame material (second truss connection). (Corresponding to the material). If it does so, since the connection structure of the adjacent roof truss 30 can be made the same irrespective of whether the attic wall 20 exists between both 30, it is convenient from the point of construction workability | operativity.

  (8) As shown in FIG. 7, for example, the roof trusses 30A and 30B adjacent to each other with the attic wall 20 sandwiched between the diagonal members 33 and the bundle members 34 of the trusses 30A and 30B are opposite to each other (outside). If it is installed so as to face, it is not necessary to consider the interference with the diagonal material 33 and the bundle material 34 for the roof frame 66 of the roof panel 65 on the boundary wall, so that the roof frame 66 has a configuration as shown in FIG. It becomes possible to do. Unlike the roof panel 65 on the wall according to the above embodiment, the roof panel 75 on the wall shown in FIG. 8 is provided with only one roof frame 80. The roof frame 80 has a rectangular frame shape, and a pair of horizontal frame members 81 extending in parallel with each other along the width direction of the field board 40, and a pair of inclined frames that connect ends of the horizontal frame members 81 to each other. Material 82. As shown in FIG. 7, the roof panel 75 on the boundary wall is bridged between the roof trusses 30 </ b> A, 30 </ b> B. It is fixed to the side surface portion of the upper chord member 31 of 30B. That is, in this case, the roof panel 75 on the boundary wall is installed without the inclined frame member 82 interfering with the diagonal member 33 and the bundle member 34. In this case, the configuration of the roof frame 80 can be simplified.

  (9) In recent years, for example, refurbishing and renting empty rooms previously used as children's rooms etc. on the second floor of a building has been performed. In this case, it may be necessary to install a field wall in the attic space afterwards. Therefore, in such a case, the roof structure wall 20 may be constructed afterwards by applying the roof structure of the above embodiment to an existing building.

  (10) In the above embodiment, the present invention is applied to a gable roof. However, the present invention may be applied to a roof having another shape such as a roof-type roof. For example, the roof structure of the present invention can be applied to the lower part of the large building in the case of a group building type roof. Moreover, in the said embodiment, although the application example to the building of a steel house was demonstrated, this invention is applied to the building of other structures, such as the building constructed | assembled by the steel frame construction method, the building constructed | assembled by the conventional wooden construction method May be applied.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Building body, 12 ... Roof part, 14 ... Dwelling unit, 20 ... Attic wall, 30 ... Roof truss, 31 ... Upper chord material, 32 ... Lower chord material, 41 ... Border wall frame, 42 ... As wall material Gypsum board, 40 ... field plate, 45 ... diagonal material, 49 ... field plate support material, 65 ... roof panel on the field wall, 67 ... horizontal frame material as truss connection material and first truss connection material, 68 ... inclined frame Wood.

Claims (8)

A plurality of roof trusses that are provided side by side on the building body and that support the base plate in a state of being placed;
In a roof structure of a building provided between two adjacent roof trusses and an attic wall arranged in a direction parallel to the roof truss in plan view,
A truss connecting member that is provided across the attic boundary wall and connects the two roof trusses adjacent to each other across the attic boundary wall;
The attic boundary wall includes a boundary wall frame, and a pair of wall materials provided on both sides of the boundary wall frame,
The roof structure of a building, wherein the truss connecting material is connected to the field wall frame. The roof truss is configured to include an upper chord material and a lower chord material, and the field plate is placed on the upper surface portion of the upper chord material,
The boundary wall frame has a diagonal material that extends in parallel to the upper chord material and whose upper surface portion is set at a position lower than the upper surface portion of the upper chord material,
The truss connecting member is placed on the diagonal member and connected to the diagonal member, and both end portions are respectively disposed on side surfaces of the upper chord members of the two roof trusses adjacent to each other with the attic wall interposed therebetween. The building roof structure according to claim 1, wherein the building roof structure is connected.   The upper surface portion of the truss connecting member is located on the same plane as the upper surface portion of the upper chord member, and is a placement surface portion on which the field board is placed. The roof structure of the building. An inclined frame material extending in the roof inclination direction along the upper chord material is fixed to each side portion facing each other in the upper chord material adjacent to each other across the attic wall,
4. The building according to claim 2, wherein a plurality of the truss connecting members are arranged at predetermined intervals along the roof inclination direction, and both end portions are respectively connected to the inclined frame members. Roof structure.   The field board support material which supports the said field board from the downward direction in the site | part different from the connection site | part with which the said truss connection material was connected on the said diagonal member is characterized by the above-mentioned. The roof structure of the building according to one item.   A plurality of the base plate support members and the truss connecting members are provided on the diagonal member, and the plurality of field plate support members and the plurality of truss connecting members are alternately arranged along the longitudinal direction of the diagonal member. The building roof structure according to claim 5, wherein the building roof structure is arranged side by side. A plurality of the truss connecting members are arranged at predetermined intervals in the roof inclination direction along the upper chord member of the roof truss,
A roof panel on the boundary wall is configured including the plurality of truss connecting materials and a field board provided over the truss connecting materials.
In the roof panel on the wall, the base plate extends to the sides of the truss connecting member, and is hooked on the upper chord members of two adjacent roof trusses sandwiching the attic wall. Has a hook,
7. Each of the hook portions is hooked on the upper chord member, so that the roof panel on the field wall is bridged between the two roof trusses. The roof structure of the building described in the section. The truss connecting material is a first truss connecting material;
The building according to any one of claims 2 to 7, further comprising a second truss connecting member that connects side portions of upper chord members of two adjacent roof trusses without sandwiching the attic wall. Roof structure.

Images