JP2021165496A - Roof structure, and construction method of roof structure - Google Patents

Abstract

To provide a roof panel capable of being easily constructed while keeping structural resistance required for a roof, a structure using a roof panel, and a construction method of the same.SOLUTION: A roof structure 11 comprises: a plurality of horizontal substrates 2; and a plurality of roof panels 40 arranged in a gradient direction on the horizontal substrate 2 to be laid all over. The roof panel 40 includes: a roofboard 6; and a rafter material 5 fixed to a lower face of the roofboard 6 and being perpendicular to the horizontal substrate 2. Of the two roof panels 40 neighboring in the gradient direction, the rafter material 5 of one roof panel 40a includes a projection portion 53 protruding from an end edge of the roofboard 6. The projection portion 53 is disposed between the rafter materials 5 of the other roof panel 40b, and fixed to the roofboard 6 of the other roof panel 40b. A protruding length of the projection portion 53 is shorter than a distance between neighboring horizontal substrates 2. The projection portion 53 and the other roof panel 40b are fixed to the same horizontal substrate 2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a roof structure formed by roof panels forming a roof slope and a construction method thereof.

Conventionally, when forming a sloping roof, a roof panel in which a plate material to be a base material for a roof finishing material is fixed to a hanging timber erected on a horizontal base material such as a main building may be used (for example, Patent Document 1 and Patent Documents). 2). Since these roof panels are carried into the construction site in a state where the hanging timber and the plate material to be placed and fixed on it are integrated in advance at the factory, each member is lifted to the height of the roof and individually constructed. It is not necessary to do this, and workability can be improved.

Japanese Patent Application Laid-Open No. 10-46737 JP-A-7-286394

By the way, in a wooden roof structure, the proof stress (horizontal proof stress) of the entire roof structure surface may be secured by combining the joint strength between the main building material and the hanging timber and the joining strength between the hanging timber and the field board. However, in the roof panels described in Patent Document 1 and Patent Document 2, adjacent roof panels are arranged on the horizontal base material in a state where the seams are matched in both the horizontal direction and the roof slope direction. The position is a structural weakness, and there is a high possibility that the horizontal strength of the entire roof cannot be secured without installing reinforcements such as horizontal braces. It is also possible to arrange the joint positions of the roof panels in a staggered arrangement, but there is a problem that the allocation of the roof panels becomes complicated and it takes time and effort for construction.

On the other hand, when forming a large sloped roof with a long length such as a large roof between beams or a one-sided roof, wooden hanging timbers that slope along the roof slope may be joined to each other. Since it is not possible to form a smooth roof surface unless it is connected accurately, high-precision construction is required. However, it is very difficult to accurately connect the slanted long hanging timbers, and the construction accuracy depends largely on the skill of the builder, so that the construction quality may differ depending on the construction site.

Therefore, the present invention has been made in view of the above-mentioned problems, and is a roof panel that can be easily constructed while maintaining the structural strength required for the roof, a structure using the roof panel, and its construction. The purpose is to provide a method.

The first roof structure of the present invention is fixed on a plurality of horizontal base materials that are parallel to each other at intervals and have a height difference forming a roof slope, and the horizontal base material. The roof structure includes a plurality of roof panels arranged side by side in a slope direction, and the roof panels are fixed in parallel to the field plate and the lower surface of the field plate at intervals from each other, and the horizontal base plate is provided. Of the two roof panels adjacent to each other in the slope direction, the roof panel has a hanging wood orthogonal to the material, and the hanging wood of one roof panel has a carry-out portion protruding from the edge of the field board and is said to be said. The carry-out portion is arranged between the hanging timbers of the other roof panel and fixed to the field plate of the other roof panel, and the protruding length of the carry-out portion is the distance between the adjacent horizontal base materials. It is characterized in that the carry-out portion and the other roof panel are fixed to the same horizontal base material.

In the second roof structure of the present invention, the one roof panel is fixed to the horizontal base material with the carry-out portion facing the water side, and the other roof panel is the one roof panel. It is characterized in that it is arranged on the water upper side of the roof and fixed to the horizontal base material.

The third roof structure of the present invention is characterized in that the take-out portion of the one roof panel and the hanging timber of the other roof panel are alternately arranged at equal intervals.

The fourth roof structure of the present invention is a roof structure in which three or more of the roof panels are arranged side by side in the gradient direction, and the roof panels on the underwater side excluding the roof panels on the ridge side are on the water, respectively. It is characterized in that it has the carry-out portion protruding to the side, and the carry-out portion is arranged and fixed between the hanging timbers of the roof panel adjacent to the water upper side.

The fifth roof structure of the present invention is a roof structure in which three or more roof panels are arranged side by side in a slope direction, and the roof panel on the water side has the carry-out portion protruding to the water side and has a carry-out portion. The roof panel on the underwater side has the carry-out portion protruding to the upper side of the water, and between the roof panel on the upper side of the water and the roof panel on the lower side of the water, the upper side and the lower side ends of the hanging wood. The roof panel in the middle is arranged so that the portion does not protrude from the edge of the field plate.

The roof structure construction method of the present invention is a roof structure construction method for constructing any of the first to fifth roof structures, in which one of the roof panels is fixed to the horizontal base material and then the other. The other roof panel is arranged so that the field plate of the roof panel covers the carry-out portion of the one roof panel, and the ends of the field plate of the one roof panel and the other roof panel are arranged with each other. The roof panel of the other roof panel and the roof panel of the other roof panel are fixed by driving a fixture into the carry-out portion from above the field plate of the roof panel of the other roof panel.

According to the first roof structure of the present invention, of the two roof panels adjacent to each other in the slope direction, one roof panel has a carry-out portion in which the hanging wood protrudes from the edge of the field board, and the carry-out portion. Is placed between the hanging timbers of the other roof panel and fixed to the field board of the other roof panel, so that the hanging timber of one roof panel and the field board of the other roof panel are joined. , The roof panels are joined together. Then, by arranging the carry-out portion of the hanging timber protruding from one roof panel between the hanging timbers of the other roof panel, it is possible to increase the distance between the hanging timbers at the joints between the roof panels. can. Therefore, it is not necessary to connect the ends of the hanging timber of each panel as in the conventional case, and the workability can be improved, and the structural strength borne by the hanging timber can be strengthened. Since the seams of the field boards of each panel and the seams of the hanging wood do not match, structural weaknesses can be compensated for, and by maintaining the joint strength between the hanging wood and the field boards, the roof structure surface The required horizontal strength as a whole can be secured. The protruding length of the carry-out portion is shorter than the length of the adjacent horizontal base materials, and the take-out portion and the other roof panel are fixed to the same horizontal base material, so that the roof panels are joined to each other. It is possible to minimize the protruding length of the carry-out portion and facilitate the handling of the roof panel without lowering the strength.

According to the second roof structure of the present invention, one roof panel is fixed to the horizontal base material with the take-out portion facing the water side, and the other roof panel is arranged on the water side of the one roof panel. Since it is fixed to the horizontal base material, one roof panel placed on the underwater side during construction is first fixed on the horizontal base material, and then the other roof panel on the water side is fixed to the horizontal base material. Since it is fixed on the material, the work can be performed facing the upper side of the water, and the workability can be improved.

According to the third roof structure of the present invention, the take-out portion of one roof panel and the hanging timber of the other roof panel are alternately arranged at equal intervals, so that the joint strength between the roof panels can be made uniform. can.

According to the fourth roof structure of the present invention, the roof structure is such that three or more roof panels are arranged side by side in the slope direction, and the roof panels on the underwater side excluding the roof panel on the most ridge side are on the water side, respectively. In addition to having a protruding part, the take-out part is arranged and fixed between the hanging timbers of the roof panel adjacent to the water side, so even if the roof becomes large, it can be handled by arranging multiple roof panels in the slope direction. be able to.

According to the fifth roof structure of the present invention, it is a roof structure in which three or more roof panels are arranged side by side in a slope direction, and the roof panel on the water side has a carry-out portion protruding to the water side and underwater. The roof panel on the side has a carry-out portion that protrudes to the upper side of the water, and between the roof panel on the upper side of the water and the roof panel on the lower side of the water, the upper and lower ends of the hanging wood are the edge of the field board. Since the intermediate roof panel that does not protrude from the roof is arranged, even if the roof becomes large, it is possible to cope with it by arranging a plurality of roof panels in the slope direction.

According to the roof structure construction method of the present invention, one roof panel is fixed to a horizontal base material, and then the other roof panel is arranged so that the field plate of the other roof panel covers the carry-out portion of one roof panel. Then, the ends of the field boards of one roof panel and the other roof panel are butted against each other, and the fixture is driven into the carry-out part from the top of the field board of the other roof panel, and one roof panel and the other roof panel are driven. Since the roof panels are fixed, the roof panels can be easily joined to each other, and the workability can be improved.

The perspective view which shows the whole structure of the roof structure of 1st Embodiment. The perspective view which shows the structure of one roof panel. The perspective view which shows the structure of the other roof panel. The figure explaining the state which attaches one roof panel to a horizontal base material in a roof structure construction method. The figure which shows the state before attaching the hanging timber of one roof panel to the eaves girder. The figure which shows the state after attaching the hanging timber of one roof panel to the eaves girder. The figure which shows the state which the hanging timber of a roof panel is attached to a purlin. The figure which shows the state which arranges the hanging timber of the other roof panel between the carry-out part of one roof panel, and drives a joint fixture. The figure explaining the state which pierces the field board and the rafters and hits the purlin joint to the purlin. The figure explaining the state which attaches the other roof panel to the horizontal base material in the roof structure construction method. The figure explaining the state which completed the roof structure of 1st Embodiment. The exploded view explaining the whole structure of the roof structure of 2nd Embodiment. An exploded view illustrating the overall configuration of the roof structure of the third embodiment.

<First Embodiment>
Hereinafter, the first embodiment of the roof structure of the present invention will be described with reference to each figure. The roof structure 11 of the present embodiment is a roof structure 11 having a slope such as a gable roof, a one-sided roof, and a hipped roof. The roof structure 11 is, for example, a roof structure 11 supported by a wooden hut structure, but may be a roof structure 11 partially or wholly supported by a steel hut structure. As shown in FIG. 1, the roof structure 11 includes a plurality of horizontal base materials 2 that are parallel to each other at intervals and perpendicular to the gradient direction, and a plurality of roof panels 40 that are fixed on the horizontal base material 2. , Is equipped.

The horizontal base material 2 is a plurality of long wooden materials. The horizontal base material 2 is supported by a pillar or a bundle of sheds (not shown) and extends in the horizontal direction. The plurality of horizontal base materials 2 are parallel to each other, and the horizontal base materials 2 have a height difference from each other so that the horizontal base material 2 on the water side is high and the horizontal base material 2 on the water side is low. It is arranged along the slope of the roof. In the illustrated example, the horizontal base material 2 is arranged parallel to the eaves girder 21 arranged on the lowermost side of the water, the purlin 22 arranged on the uppermost side of the water, and between the eaves girder 21 and the purlin 22. It is composed of three purlins 23. The number of each horizontal base material 2 and the distance between each horizontal base material 2 are calculated by structural calculation in consideration of factors such as the shape of the roof, the climate of each region, and the load acting on the roof. The horizontal base material 2 may have a horizontal distance of, for example, 1000 mm to 1500 mm if it is between adjacent purlins 23. The arrangement of the horizontal base material 2 in FIG. 1 shows an example, and the type and shape of the horizontal base material 2 and the number of purlins 23 are not particularly limited.

As shown in FIGS. 1 and 5, the eaves girder 21 and the purlin 22 are long wooden timbers having a rectangular cross section. A rafter stand 24 for receiving the rafters 5 of the roof panel 40, which will be described later, is fixed to the upper surfaces of the eaves girder 21 and the rafters 22. In the rafter stand 24, a groove-shaped notch 25 formed so that the bottom surface has a slope equal to the roof slope is formed at a place where each rafter 5 is fixed. As shown in FIG. 6, the lower side of the rafter 5 is inserted into the notch 25, and the rafter 5 is in contact with the bottom surface of the notch 25 with the eaves girder 21 or the eaves girder 21 or It is fixed to the purlin 22. Although FIGS. 5 and 6 show the joints between the eaves girder 21 and the rafters 5, the joints between the ridges 22 and the rafters 5 have the same configuration as shown in FIGS. 4 and 10. be.

As shown in FIGS. 1 and 7, in the purlin 23, a rafter hanging 26 whose upper surface is inclined according to the roof slope is fixed to the side surface on the underwater side by nails 27, and the rafters 5 of the roof panel 40 are fixed. By abutting the lower surface of the rafter hanging 26 on the upper surface of the rafter hanging 26, each rafter 5 can be stabilized in a state of being inclined along the roof slope, and the rafter 5 and the purlin 23 can be fixed.

The roof panel 40 is a composite panel formed by fixing a plywood field board 6 and a hanging timber 5 made of square timber in advance at a factory with a fixing tool 43 made of screws or nails. A plurality of roof panels 40 are laid out side by side in the slope direction to form a roof slope, and roofing materials such as asphalt roofing and roof tiles (not shown) are laid on the field plate 6 of the roof panel 40. In the first embodiment, in the roof panel 40, two roof panels 40a and 40b are arranged so as to be butted against each other in the gradient direction. Of the roof panels 40, one roof panel 40a is arranged on the water side, and the other roof panel 40b is arranged on the water side.

As shown in FIG. 2, one roof panel 40a has a field board 6 and a plurality of hanging timbers 5 fixed in parallel to the lower surface of the field board 6 at intervals. The field board 6 is a structural plywood having a thickness of 12 mm, and is formed in a rectangular shape having a width of 2000 mm or less and a length of 3000 mm or more and 4000 mm or less. With such a size, the roof panel 40a can be lifted by a crane and placed at a predetermined position without any trouble at the time of construction, and can be easily transported. The hanging timber 5 is fixed to the field board 6 by a fixture 43 such as a nail that is driven from above the field board 6. On the other hand, the roof panel 40a has a carry-out portion 53 in which the hanging timber 5 projects from the edge of the field board 6. The protruding length L of the carry-out portion 53 in the first embodiment is 500 mm. The protruding length L of the carry-out portion 53 is at least shorter than the distance between the adjacent purlins 23. Further, the protruding length L of the carry-out portion 53 is longer than a length that allows the take-out portion 53 to be fixed to the field plate 6 of the other roof panel 40b by striking a joint fixture 44 such as a nail. The joint fixture 44 is, for example, a thick iron round nail having a length of 50 mm, and by driving three joint fixtures 44 from the top of the field plate 6 of the other roof panel 40b into the carry-out portion 53 of the hanging timber 5, respectively. , The strength is higher than that required for joining the roof panels 40 to each other. If the projecting length of the carry-out portion 53 is 500 mm, three joint fixtures 44 can be driven into the carry-out portion 53 from above the field plate 6 at an appropriate distance.

By setting the carry-out portion 53 to the minimum protruding length L required for joining the roof panels 40 to each other in this way, one roof panel 40a can be easily handled during construction, and the construction work can be performed efficiently. Can be done.

Further, one roof panel 40a is formed with the hanging timber 5 protruding from the underwater end edge of the field board 6. The portion of the hanging timber 5 protruding downward from the water is fixed to the eaves girder 21. As shown in FIGS. 5 and 6, reference ink 54 is marked on the side surface of the hanging timber 5 at a position where it comes into contact with the eaves girder 21 in order to align the eaves. The protrusion width of the hanging timber 5 of one roof panel 40a from the field board 6 is determined by the size of the protrusion of the roof eaves. As for the hanging timber 5, the hanging timber 5 of the roof panel 40 other than the roof panel 40a installed on the underwater side does not protrude from the field board 6 to the underwater side.

The hanging timber 5 of one roof panel 40a has a length spanned over the eaves girder 21 and the two purlins 23. The length of the hanging timber 5 of one roof panel 40a is not limited to this, and may be one that is laid over three or more purlins 23.

The distance between the adjacent hanging timbers 5 of the roof panel 40 shall be 500 mm or less in accordance with the placement standard for the horizontal base material 2 specified in "Allowable stress design of wooden frame construction method housing (2017 version)". Is desirable. Further, it is desirable that the intervals between the plurality of hanging timbers 5 are equal in consideration of ease of allocation and workability, but it is not always necessary to make the intervals equal to 500 mm or less.

Of the roof panels 40, the other roof panel 40b arranged on the water side is a composite panel in which the field board 6 and the hanging timber 5 are integrated in advance at the factory, similarly to the one roof panel 40a. As shown in FIG. 3, the other roof panel 40b has a field board 6 and a plurality of hanging timbers 5 fixed in parallel to the lower surface of the field board 6 at intervals. The hanging timber 5 is connected and fixed to the field board 6 by a plurality of fixtures 43 driven from above the field board 6. The hanging timber 5 of the other roof panel 40b is arranged so as to be aligned with the edge of the field board 6 without protruding from both end edges of the field board 6.

As shown in FIGS. 1 and 8, the field plate 6 of the other roof panel 40b is arranged on the carry-out portion 53 of the one roof panel 40a and covers the carry-out portion 53 from above. The carry-out portion 53 of one roof panel 40a and the hanging timber 5 of the other roof panel 40b are arranged so as to overlap each other when viewed from the side, and the carry-out portion 53 is arranged between the hanging timber 5 of the other roof panel 40b. Will be done. The carry-out portion 53 of one roof panel 40a and the hanging timber 5 of the other roof panel 40b are arranged so as to be alternately arranged at equal intervals, and one roof panel is arranged on the field plate 6 of the other roof panel 40b. When the carry-out portion 53 of 40a is fixed, the joint strength between the roof panels 40 can be made uniform, and it is possible to prevent an excessive load from being applied to a part of the roof panels 40.

Three nail joint fixtures 44 are driven into the respective carry-out portions 53 of the one roof panel 40a at intervals of 150 mm from the top of the field plate 6 of the other roof panel 40b, and the one roof panel 40a is taken out. The part 53 and the field plate 6 of the other roof panel 40b are joined. Further, as shown in FIG. 9, the purlin 23 at the position where the carry-out portion 53 is arranged penetrates the field board 6 of the other roof panel 40b and the carry-out portion 53 of the one roof panel 40a, and is long. One rafter joint 55 of screws is driven in, and the carry-out portion 53 of one roof panel 40a and the purlin 23 are joined. The joint strength between the carry-out portion 53 of one roof panel 40a by the three joint fixtures 44 and the field plate 6 of the other roof panel 40b is the joint strength between the carry-out portion 53 of one roof panel 40a and the purlin by the rafter joints 55. It has a bonding strength equal to or higher than the bonding strength with 23.

With the above configuration, one roof panel 40a and the other roof panel 40b can be integrated as a whole roof panel 40 without connecting the respective hanging timbers 5, and the structural strength is enhanced. be able to.

As shown in FIG. 4, the roof structure is constructed by erection of eaves girders 21, purlins 23, and purlins 22 on pillars or shed bundles (not shown) to form a shed structure, and then one roof panel 40a. Is arranged and fixed on the eaves girder 21 and the two purlins 23 adjacent to the eaves girder 21. As described above, one of the roof panels 40a is placed on the rafter stand 24 on the upper part of the eaves girder 21 and the rafter hanging 26 fixed to the purlin 23 with the take-out portion 53 of the rafter 5 facing the water side. NS. Then, as shown in FIG. 5, the underwater end of the rafter 5 is fitted into the notch of the rafter stand 24. Then, after the reference ink 54 and the corner of the rafter stand 24 on the underwater side are aligned and the protrusion width from the eaves girder 21 at the end on the underwater side is aligned, as shown in FIG. 6, from above. , The rafter joint 55 of the long screw is driven in, and the end portion of the rafter 5 on the underwater side and the eaves girder 21 are integrally connected and fixed. At this time, since the reference ink 54 is not concealed by the field plate 6, the reference ink 54 can be easily aligned with the predetermined position of the eaves girder 21, and the workability can be improved. Then, as shown in FIG. 7, a long screw rafter joint 55 penetrates the purlin 5 from above the field board 6 and is driven into the purlin 23 at a portion of the purlin 23 that abuts on the rafter hanging 26. The roof panel 40a is fixed to the eaves girder 21 and the purlin 23.

Next, as shown in FIG. 10, the other roof panel 40b is placed on the water side of the one roof panel 40a and placed on the rafter hanging 26 fixed to the purlin 23 and the rafter stand 24 above the purlin 22. do. At this time, a part of the hanging timber 5 on the underwater side is arranged between the carry-out portions 53 of one roof panel 40a, and the field plate 6 of one roof panel 40a and the field plate 6 of the other roof panel 40b are arranged. Butt against each other. Then, the water upper end of the rafter 5 is fitted into the rafter stand 24 of the ridge 22 in the same procedure as the one roof panel 40a, and the other roof panel is used from above the field board 6 with the rafter joint 55 of the long screw. The 40b and the purlin 22 are integrally connected and fixed. Then, as shown in FIG. 9, the rafter joint 55 of the long screw is driven into the rafter 5 at the position where it abuts on the rafter hanging 26 of the purlin 23 from above the field board 6, and the other roof panel 40b is mounted on the purlin 23. And fixed to the purlin 22.

In this way, the roof panel 40 fixed on the horizontal base material 2 composed of the eaves girder 21, the purlin 23, and the purlin 22, is one with the field plate 6 of the other roof panel 40b, as shown in FIG. By driving a plurality of joint fixtures 44 from above at positions where they are aligned with the carry-out portion 53 of the roof panel 40a of the roof panel 40a, they are connected to each other. Then, as shown in FIG. 11, each roof panel 40 is installed in the horizontal direction in the same procedure, the eaves purlin 34 is fixed to the end of the eaves side of the hanging wood 5 with screws, and the eaves projecting from the eaves. The eaves field base plate 51 for the eaves is installed at the end of the wood 5 and the upper part of the eaves purlin 34. Finally, the end field board 52 is installed between the edge of the other roof panel 40b located at the end of the roof surface on the gable side and the edge of the purlin 23 and the purlin 22 in the longitudinal direction. Then, the roof structure 11 is completed.

As described above, in the roof structure 11 of the first embodiment, the hanging timber 5 of one roof panel 40a and the hanging timber 5 of the other roof panel 40b are partially staggered so that the hanging timbers 40a and 40b of the roof panels 40a and 40b are hanging. The distance between the wood 5 can be increased. Therefore, the structural strength of the joint portion of each hanging timber 5 can be strengthened without joining the ends of each hanging timber 5, and the workability can be significantly improved. Further, since the seams of the field board 6 and the hanging timber 5 do not match, structural weaknesses can be compensated for, and a roof structure 11 that can be easily constructed while maintaining the structural strength required for the roof is constructed. be able to.

<Second Embodiment>
Next, the roof structure 12 of the second embodiment will be described. The same components as those of the roof structure 11 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The roof structure 12 of the second embodiment is a roof structure 12 in which three roof panels 40 are arranged side by side in the slope direction. In the present embodiment, the two roof panels 40c and 40d excluding the roof panel 40e on the most ridge side have a field board 6 and a plurality of hanging timbers 5 as shown in FIG. Projects from the water upper edge of the field board 6 to form a carry-out portion 53. These carry-out portions 53 have a protruding length of 500 mm.

Of the two roof panels 40c and 40d on the underwater side, the roof panel 40c on the eaves side is formed by projecting the hanging timber 5 from the underwater end edge of the field board 6. The portion of the hanging timber 5 protruding downward from the water is fixed to the eaves girder 21. In the roof panel 40d between the roof panel 40e on the most ridge side and the roof panel 40c on the eaves side, the hanging timber 5 does not protrude from the field board 6 to the underwater side, and the carry-out portion 53 is provided only on the water upper side. It is formed. Further, the roof panel 40e on the most ridge side has the same form as the other roof panel 40b in the first embodiment, and the hanging timber 5 of the roof panel 40e does not protrude from both end edges of the field board 6, respectively. It is arranged so as to be aligned with the edge of the field board 6.

On the carry-out portion 53 formed on the water side of the roof panel 40c on the most eave side, the field plate 6 of the intermediate roof panel 40d is arranged so as to cover the carry-out portion 53, and the intermediate roof panel 40d The hanging wood 5 is arranged so as to sandwich the carry-out portion 53, and the joint fixing tool 44 is driven into the carry-out portion 53 of the roof panel 40c on the eaves side from the top of the field plate 6 of the intermediate roof panel 40d. The carry-out portion 53 of the roof panel 40c on the eaves side and the field plate 6 of the roof panel 40d in the middle are joined. Further, on the carry-out portion 53 formed on the water side of the intermediate roof panel 40d, the field plate 6 of the roof panel 40e on the ridge side is arranged so as to cover the carry-out portion 53, and the ridge side is the most. The hanging wood 5 of the roof panel 40e is arranged so as to sandwich the carry-out portion 53, and the joint fixture 44 is attached to the carry-out portion 53 of the intermediate roof panel 40d from above the field plate 6 of the roof panel 40e on the most ridge side. After driving, the take-out portion 53 of the intermediate roof panel 40d and the field plate 6 of the roof panel 40e on the most ridge side are joined. The rafters 5 of each roof panel 40, the eaves girder 21, the purlin 23, and the ridges 22 are joined by a long screw rafter joint 55 driven from above the field board 6 as in the first embodiment. ing.

In the roof panel 40 of the present embodiment, in the relationship between the roof panel 40c on the most eaves side and the roof panel 40d in the middle, the roof panel 40c on the eaves side is the "one roof panel" in the present invention. , The intermediate roof panel 40d corresponds to the "other roof panel" in the present invention. Further, in the relationship between the intermediate roof panel 40d and the roof panel 40e on the most ridge side, the intermediate roof panel 40d corresponds to "one roof panel" in the present invention, and the roof panel 40e on the most ridge side corresponds to the present invention. Corresponds to "the other roof panel" in.

As described above, the roof panels 40c and 40d on the underwater side excluding the roof panel 40e on the most ridge side each have a carry-out portion 53 projecting to the upper side of the water, and the hanging timber 5 of the roof panel 40 adjacent to the upper side of the water. Since the take-out portion 53 is arranged and fixed between them, even if the roof becomes large, it is possible to deal with it by arranging a plurality of roof panels 40 in the gradient direction. In the second embodiment, the embodiment in which the three roof panels 40 are arranged side by side in the slope direction is illustrated, but four or more roof panels 40 may be arranged side by side in the slope direction. In this case, a plurality of intermediate roof panels 40d in the present embodiment are arranged between the roof panel 40e on the most ridge side and the roof panel 40c on the most eaves side.

<Third Embodiment>
Next, the roof structure 13 of the third embodiment will be described. The same components as those of the roof structures 11 and 12 of the first embodiment and the second embodiment are designated by the same reference numerals, and the description thereof will be omitted. The roof structure 13 of the third embodiment is a roof structure 13 in which three roof panels 40 are arranged side by side in the gradient direction as in the second embodiment. In the present embodiment, the roof panel 40h on the water side, which is arranged on the ridge side most, has a carry-out portion 53 protruding from the field board 6 to the water side. Further, the roof panel 40f on the underwater side, which is arranged on the eaves side most, has a carry-out portion 53 protruding upward from the field plate 6. Then, between the roof panel 40h on the water upper side and the roof panel 40f on the water side, a roof panel 40 g is arranged between the edge of the field board 6 and the water upper side and the water side end of the hanging timber 5. ..

On the carry-out portion 53 of the roof panel 40f on the underwater side, which projects upward on the water side, the field plate 6 of the intermediate roof panel 40 g is arranged so as to cover it, and the hanging wood 5 of the intermediate roof panel 40 g is taken out. Arranged so as to sandwich the portion 53, the joint fixture 44 is driven into the take-out portion 53 of the roof panel 40f on the underwater side from above the field plate 6 of the roof panel 40 g on the underwater side, and the roof panel 40f on the underwater side is driven. The carry-out portion 53 of the above and the field plate 6 of the roof panel 40 g in the middle are joined. Further, on the carry-out portion 53 projecting to the underwater side of the roof panel 40h on the water upper side, a field plate 6 of the intermediate roof panel 40 g is arranged so as to cover the roof panel 40 g of the intermediate roof panel 40 g, and the hanging wood 5 of the intermediate roof panel 40 g. Is arranged so as to sandwich the carry-out portion 53, and the joint fixture 44 is driven into the carry-out portion 53 of the roof panel 40h on the water side from above the field plate 6 of the roof panel 40 g on the water side, and the roof panel 40h on the water side is driven. The carry-out portion 53 of the above and the field plate 6 of the roof panel 40 g in the middle are joined.

As described above, in the roof structure 13 of the present embodiment, the hanging timbers 5 are partially arranged alternately, and the end portions of the hanging timbers 5 are subjected to complicated processing as in the conventional case to join the hanging timbers 5 to each other. Since it is not necessary to match the roof, the workability can be greatly improved even with a long roof. Further, since the seams of the field board 6 and the hanging timber 5 do not match, structural weaknesses can be compensated for, and a roof structure 13 that can be easily constructed while maintaining the structural strength required for the roof is constructed. be able to. Then, after positioning the bottom and top of the water with the roof panel 40f on the water side and the roof panel 40h on the water side, the middle roof panel 40 g is dropped from above, so that the roof panel 40 around the eaves and ridges is dropped. It is possible to prevent the deviation.

2 Horizontal base material 5 Lumber 6 Field board 11, 12, 13 Roof structure 40 Roof panel 53 Take-out part

Claims (6)

A plurality of horizontal base materials that are parallel to each other and are arranged with a height difference forming a roof slope.
A roof structure including a plurality of roof panels fixed on the horizontal base material and laid out side by side in a gradient direction.
The roof panel has a field board and a lumber that is fixed in parallel to the lower surface of the field board at intervals and orthogonal to the horizontal base material.
Of the two roof panels adjacent to each other in the slope direction, the hanging timber of one roof panel has a carry-out portion protruding from the edge of the field board, and the carry-out portion is of the hanging timber of the other roof panel. Arranged in between and fixed to the field board of the other roof panel,
The protruding length of the carry-out portion is shorter than the distance between the adjacent horizontal base materials.
A roof structure characterized in that the carry-out portion and the other roof panel are fixed to the same horizontal base material. The one roof panel is fixed to the horizontal base material with the carry-out portion facing upward on the water.
The roof structure according to claim 1, wherein the other roof panel is arranged on the water upper side of the one roof panel and fixed to the horizontal base material. The roof structure according to claim 1 or 2, wherein the take-out portion of the one roof panel and the hanging timber of the other roof panel are alternately arranged at equal intervals. It is a roof structure in which three or more roof panels are arranged side by side in a gradient direction.
The roof panels on the underwater side, excluding the roof panel on the ridge side, each have the take-out portion protruding to the water side, and the take-out portion is provided between the hanging timbers of the roof panel adjacent to the water side. The roof structure according to any one of claims 1 to 3, wherein the roof structure is arranged and fixed. It is a roof structure in which three or more roof panels are arranged side by side in a gradient direction.
The roof panel on the water side has the carry-out portion protruding to the water side, and the roof panel on the water side has the carry-out part protruding to the water side, and the roof panel on the water side and the underwater portion. The first aspect of claim 1, wherein an intermediate roof panel is arranged between the side roof panels so that the water upper side and the water lower side ends of the hanging wood do not protrude from the edge of the field plate. The roof structure according to any one of Item 3. A roof structure construction method for constructing the roof structure according to any one of claims 1 to 5.
The one roof panel is fixed to the horizontal base material, and then the other roof panel is arranged so that the field plate of the other roof panel covers the carry-out portion of the one roof panel. The ends of the one roof panel and the field board of the other roof panel are butted against each other.
A roof structure construction method, characterized in that a fixture is driven into the carry-out portion from above the field plate of the other roof panel to fix the one roof panel and the other roof panel.

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