Temporary fixing structure and method for roof panels

Abstract

This invention provides a temporary fixing structure and method for roof panels that allows for easy temporary fixing of a roof panel fixed to the eaves side of a roof structure and another roof panel fixed above the first roof panel. [Solution] The temporary fixing structure is used to temporarily fix a roof truss, a first roof panel fixed to the eaves, and a second roof panel fixed above the first roof panel. The roof truss has a purlin, a beam, and a ridge beam. The first roof panel has a plurality of first rafters and a first roof sheathing that are erected on the purlin and the beam. The second roof panel has a plurality of second rafters and a second roof sheathing that are erected on the beam or the ridge beam. The purlin has a groove that supports the first rafter via a joint surface that connects with the first rafter, and the groove is provided with a projection that protrudes from the joint surface. The first rafter has a recess that can be fitted into the projection.

Description

TECHNICAL FIELD

[0001] The present invention relates to a temporary fixing structure and a temporary fixing method for roof panels, and in particular, to a temporary fixing structure and a temporary fixing method for a plurality of roof panels to a roof truss.

BACKGROUND ART

[0002] Conventionally, roof panels have been used to improve the work efficiency of construction work for wooden houses. The roof panel is a roof base material that includes a plurality of rafters, a sheathing board covering the rafters, and a waterproof sheet called roofing. The roof panel is manufactured in a factory or the like, then transported to a construction site, and fixed to a roof frame called a roof truss. Therefore, there is no need to manufacture roof panels at the construction site, and the work burden at the construction site can be reduced.

[0003] Patent Document 1 describes a temporary fixing structure for roof panels, in which a protrusion is formed on a ridge purlin located at the uppermost part of a roof truss, a recessed groove is provided at the upper end of the rafter of the roof panel, and the two are engaged to temporarily fix the roof panel to the roof truss. By using the temporary fixing structure for roof panels described in Patent Document 1, it is possible to temporarily fix the roof panel pre-manufactured in a factory to the roof truss before performing permanent fixing, so that the work burden related to the installation of roof panels can be reduced.

PRIOR ART DOCUMENTS

PATENT DOCUMENTS

[0004]

PATENT DOCUMENT 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0005] Although the temporary fixing structure for roof panels described in Patent Document 1 can reduce the workload at construction sites, it had the following problems. Specifically, the roof panels described in Patent Document 1 are installed on the ridge beam at the top and the eaves beam at the bottom of the roof structure. As a result, the dimensions and weight of the roof panels increased, making them difficult to handle. Therefore, it was conceivable to divide the roof panels to make them smaller, but in this case, it would be necessary to provide protrusions for temporarily fixing the roof panels not only on the ridge beam but also on the purlins, which could reduce work efficiency.

[0006] The present invention has been made in view of the above problems, and the object of the present invention is to provide a temporary fixing structure and temporary fixing method for roof panels that can easily temporarily fix a roof panel fixed to the eaves side of a roof structure and a roof panel fixed above the said roof panel. [Means for solving the problem]

[0007] The aforementioned problem is solved by the temporary fixing structure of the present invention, which provides a temporary fixing structure for temporarily fixing a roof truss, a first roof panel fixed to the eaves of the roof truss, and a second roof panel fixed above the first roof panel, wherein the roof truss has a eaves beam arranged at the eaves, purlins and ridge beams arranged above the eaves beam, and the first roof panel has a plurality of first rafters erected on the eaves beam and the purlins adjacent to the eaves beam, and a first covering that covers the plurality of first rafters The second roof panel comprises a plurality of second rafters erected on the purlin or ridge beam, and a second roof panel covering the plurality of second rafters, the eaves beam having a groove that supports the first rafter via a joint surface that joins with the first rafter, the groove being provided with a projection that protrudes above the joint surface, and the first rafter having a recess formed on the joined surface that joins with the joint surface that can be fitted with the projection.

[0008] According to the above configuration, the roof panel is divided into a first roof panel fixed to the eaves side of the roof structure and a second roof panel fixed above the first roof panel (towards the ridge of the roof structure). Therefore, compared to a single roof panel installed from the eaves to the ridge, the increase in size and weight can be suppressed, and the workload related to transporting and temporarily fixing the roof panel can be reduced. Furthermore, the eaves beam has a groove that connects to the first rafter of the first roof panel, and the groove has a projection that protrudes upward from the joint surface. On the other hand, the joint surface of the first rafter that connects to the joint surface has a recess that can be fitted into the projection. Therefore, the first roof panel can be temporarily fixed to the roof structure by fitting the first rafter into the eaves beam. Also, the second roof panel can be temporarily fixed by having the first roof panel support the second roof panel. As a result, the first roof panel, which is fixed to the eaves side of the roof structure, and the second roof panel, which is fixed above the first roof panel, can be easily temporarily fixed to the roof structure.

[0009] Furthermore, the joint surface of the groove is an inclined surface that slopes downward in the direction of the eaves, and the protruding portion is preferably at the same height as the upper surface of the eaves beam without descending in the direction of the eaves. According to the above configuration, the eaves beam is machined to slope downwards towards the eaves, while the protruding portion is not machined. This makes it possible to provide a temporary fixing structure with a protruding portion without increasing the number of parts.

[0010] Furthermore, the roof structure may have a plate-like body that covers the groove, and the protruding portion may be provided on the plate-like body. According to the above configuration, a protrusion can be created on the groove by the simple operation of covering the groove with a plate-like body, which makes it possible to easily temporarily fix the roof panel on the eaves side to the roof structure.

[0011] Furthermore, the truss structure may have an insertion member having a body portion having a substantially cylindrical shape and a head portion having a larger diameter than the body portion, the groove may have an insertion hole into which the body portion can be inserted, and the protrusion may be the head portion of the insertion member into which the body portion is inserted. With the above configuration, a protrusion can be created on the groove by simply inserting the insertion member into the groove, which makes it possible to easily temporarily fix the roof panel on the eaves side to the roof structure.

[0012] Furthermore, it is preferable that the upper end of the first rafter is provided with a support portion that connects to the lower end of the second rafter of the second roof panel and supports the second roof panel. According to the above configuration, by providing a support at the upper end of the first rafter, it becomes possible to easily temporarily fix the roof panel, which is fixed above the first rafter, to the roof structure.

[0013] The aforementioned problem is addressed by the present invention's temporary fixing method, which provides a method for temporarily fixing a roof truss, a first roof panel fixed to the eaves side of the roof truss, and a second roof panel fixed above the first roof panel, comprising: a first lifting step of lifting the first roof panel above the roof truss; a first temporary fixing step of lowering the first roof panel and placing the joint surface of the first rafter of the first roof panel on the joint surface of the groove provided on the eaves beam of the roof truss, thereby temporarily fixing the first roof panel by supporting the first roof panel on the eaves beam; and a second temporary fixing step of lowering the second roof panel The first temporary fixing step includes a second lifting step of lifting the roof truss above the roof structure, and a second temporary fixing step of lowering the second roof panel and placing the joint surface of the second rafter of the second roof panel on the joint surface of the groove provided in the purlin of the roof structure, thereby temporarily fixing the second roof panel by supporting the second roof panel with the purlin and the first roof panel. The first temporary fixing step makes it possible to fit the recess formed on the joint surface of the first rafter into the protruding portion of the purlin that protrudes above the joint surface of the purlin when placing the first rafter on the groove provided in the eaves beam.

[0014] According to the above configuration, a first roof panel fixed to the eaves of the roof structure and a second roof panel fixed above the first roof panel (towards the ridge of the roof structure) are temporarily fixed. The eaves beam has a groove that connects to the first rafter of the first roof panel, and the groove has a projection that protrudes upward from the joint surface. On the other hand, the first rafter has a recess that can be fitted into the projection. Therefore, the first roof panel can be temporarily fixed to the roof structure by fitting the first rafter into the eaves beam. In addition, the second roof panel can be temporarily fixed by having the first roof panel support the second roof panel. Thus, the first roof panel fixed to the eaves side of the roof structure and the second roof panel fixed above the first roof panel can be easily temporarily fixed to the roof structure.

[0015] Furthermore, after the second temporary fixing step, it is preferable to have a covering step in which at least a portion of the first waterproof sheet covering the first rafters and first roof deck of the first roof panel is covered with a second waterproof sheet covering the second rafters and second roof deck of the second roof panel. According to the above configuration, waterproofing of the roof can be easily achieved by covering the first waterproof sheet of the first roof panel with the second waterproof sheet of the second roof panel. [Effects of the Invention]

[0016] According to the temporary fixing structure and temporary fixing method for roof panels of the present invention, it is possible to easily temporarily fix a roof panel fixed to the eaves side of the roof structure and a roof panel fixed above the said roof panel to the roof structure. [Brief explanation of the drawing]

[0017] [Figure 1] This is a diagram illustrating the basic structure of a roof. [Figure 2] This is a perspective view of the roof panel from above. [Figure 3]It is a perspective view of the roof panel as viewed from the back side. [Figure 4] It is a perspective view of the eave girder and the notch recess. [Figure 5] It is a front view of the eave girder and the notch recess. [Figure 6] It is a side view showing a state where the roof panel is temporarily fixed to the roof truss. [Figure 7] It is a diagram showing the steps of the temporary fixing method for the roof panel. [Figure 8] It is a perspective view of the protruding part of the temporary fixing structure according to the first modified example. [Figure 9] It is a perspective view of the protruding part of the temporary fixing structure according to the second modified example. [Mode for Carrying Out the Invention]

[0018] Hereinafter, with reference to Fig. 1 to Fig. 7, the temporary fixing structure and temporary fixing method for roof panels according to one embodiment of the present invention (hereinafter referred to as the present embodiment) will be described. However, the embodiment described below is merely an example for facilitating understanding of the present invention, and does not limit the present invention. That is, the present invention may be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

[0019] <Overview of Roof R> First, the overview of the roof R will be described with reference to Fig. 1. The roof R of a wooden house covers the house and serves to protect the house from rain, wind and ultraviolet rays. The roof R mainly includes a roof truss 2, a roof panel 10 fixed on the roof truss 2, and a roofing material not shown in the drawings.

[0020] The roof truss 2 includes a roof beam 3, a roof post 4, an eave girder 5, a purlin 6, and a ridge purlin 7, and forms the skeleton of the roof R. The roof beam 3 is a horizontally extending transverse member, which is arranged at the lowermost position of the roof truss 2 and supports the roof truss 2. The roof post 4 is a vertical member extending upward from the roof beam 3, and supports the purlin 6 and the ridge purlin 7 which will be described later.

[0021] The eaves beam 5, purlin 6, and ridge beam 7 are horizontal members that extend perpendicular to the roof beam 3 and are parallel to each other. The eaves beam 5 is positioned at the eaves of the roof structure 2. In other words, it is positioned at the very bottom of the roof structure 2 and connects to the ends of the roof beams 3. The purlins 6 are positioned above the eaves beam 5 and are supported by the roof trusses 4. The ridge beam 7 is positioned at the very top of the roof structure 2 and is supported by the roof trusses 4.

[0022] The eaves beam 5 and the purlin 6 have grooves 51 and 61 that support the roof panel 10. The groove 51 formed on the eaves beam 5 has an inclined surface that slopes downward from the upper surface 52 of the eaves beam 5 toward the eaves. Similarly, the groove 61 formed on the purlin 6 has an inclined surface that slopes downward from the upper surface 62 of the purlin 6 toward the eaves. Details of the grooves 51 will be described later with reference to Figure 4.

[0023] The roof panel 10 is a base material fixed to the roof truss 2, and comprises a first roof panel 10A fixed to the eaves of the roof truss 2, and a second roof panel 10B (see Figure 6) fixed above the first roof panel 10A (towards the ridge) of the roof truss 2. By using the first roof panel 10A and the second roof panel 10B, which are divided from each other in this way, the roof panel 10 can be made smaller and lighter compared to using a single roof panel. Therefore, it is possible to improve the transportability and ease of installation of the roof panel 10. In the following description, the first roof panel 10A and the second roof panel 10B are collectively referred to as the roof panel 10.

[0024] Figure 1 shows one first roof panel 10A temporarily fixed to the truss 2. As indicated by the dashed line in Figure 1, multiple first roof panels 10A are temporarily fixed under the eaves of the truss 2. Similarly, multiple second roof panels 10B are temporarily fixed above the first roof panels 10A. The first roof panels 10A and the second roof panels 10B are permanently fixed to the truss 2 by nailing.

[0025] <Overview of the first roof panel 10A> Next, the first roof panel 10A will be described with reference to Figures 2 and 3. The first roof panel 10A comprises a first rafter 11A, a first roof sheathing board 12A, and a first waterproof sheet 13A, and is a base material fixed to the eaves of the roof structure 2.

[0026] The first rafter 11A is a long member that is installed diagonally between the eaves beam 5 and the purlin 6. More specifically, the first rafter 11A rests on the groove 51 of the eaves beam 5 and the groove 61 of the purlin 6, and is supported by the eaves beam 5 and the purlin 6. As shown in Figures 2 and 3, the first roof panel 10A is provided with five first rafters 11A spaced apart from each other, but the spacing and number of the first rafters 11A are not limited to those shown in Figures 2 and 3.

[0027] A recess 112A is provided on the joining surface 111A of the first rafter 11A that connects to the eaves beam 5 when the first roof panel 10A is fixed to the roof structure 2. The recess 112A is a temporary fixing structure 1 that temporarily fixes the first roof panel 10A to the roof structure 2 by fitting into a projection 54 (see Figure 4) formed on the eaves beam 5. Details of the temporary fixing structure 1 will be described later.

[0028] Furthermore, when the first roof panel 10A and the second roof panel 10B are fixed to the roof structure 2, a support portion 113A is provided at the joint where the first rafter 11A connects with the lower end portion 111B of the second rafter 11B to support the second rafter 11B. The support portion 113A has a stepped shape and supports the second rafter 11B of the second roof panel 10B, which will be described later, from below (see Figure 6).

[0029] The first roof sheathing board 12A is a wooden underlayment fixed to the first rafter 11A. The first roof sheathing board 12A supports the roofing material (tiles, slate, etc.) and is covered by the roofing material. The first roof sheathing board 12A is made of plywood, but is not limited to plywood.

[0030] The first waterproof sheet 13A is a sheet material that covers the first roof decking 12A and serves to prevent rainwater from seeping in through the gaps in the roofing material. The first waterproof sheet 13A is called asphalt roofing and is a waterproof paper manufactured by impregnating cardboard with asphalt, but is not limited to this. The first waterproof sheet 13A may also be a breathable waterproof roofing with excellent moisture permeability.

[0031] <Overview of the second roof panel 10B> Next, I will explain the second roof panel 10B. The second roof panel 10B comprises a second rafter 11B, a second roof sheathing board 12B, and a second waterproof sheet 13B, and is a base material fixed to the upper side of the first roof panel 10A (towards the ridge beam 7 of the roof truss 2) (see Figure 6).

[0032] The second rafter 11B is a long member that is installed diagonally between the purlin 6 and the ridge beam 7. The second rafter 11B rests on a groove 61 formed in the purlin 6 and is supported by the purlin 6 and the ridge beam 7. The second rafter 11B differs from the first rafter 11A in that it does not have a recess 112A.

[0033] The second roof sheathing board 12B is a wooden underlayment that is fixed to the second rafter 11B. The second roof sheathing board 12B supports the roofing material and is covered by the roofing material, just like the first roof sheathing board 12A. The second waterproof sheet 13B is a sheet material that covers the second roof decking 12B, and, like the first waterproof sheet 13A, is an asphalt roofing that prevents rainwater from entering.

[0034] <Temporary Fixing Structure 1> Next, a temporary fixing structure 1 for temporarily fixing the first roof panel 10A and the second roof panel 10B to the roof structure 2 will be described with reference to Figures 4 to 6. The temporary fixing structure 1 has a projection 54 provided on the eaves beam 5 of the roof structure 2 and a recess 112A formed in the first rafter 11A of the first roof panel 10A.

[0035] Figure 4 shows a perspective view of the groove 51 and projection 54 of the eaves beam 5, and Figure 5 shows a front view. Figure 6 shows the state in which the first roof panel 10A and the second roof panel 10B are temporarily fixed to the roof structure 2. As shown in Figure 4, the eaves beam 5 has a groove 51 that supports the first rafter 11A via a joint surface 53 that connects to the first rafter 11A. The joint surface 53 is an inclined surface that slopes downward from the upper surface 52 of the eaves beam 5 in the direction of the eaves (indicated by arrow A in Figure 4).

[0036] Furthermore, the groove 51 is provided with a projection 54. The projection 54 has a roughly semicircular shape when viewed from above and protrudes upward from the joint surface 53. While the groove 51 is formed by cutting the upper surface 52 of the eaves beam 5, the projection 54 is not cut. Therefore, as shown in Figure 5, the projection 54 does not descend in the direction of the eaves and is at the same height as the upper surface 52 of the eaves beam 5.

[0037] On the other hand, as explained with reference to Figure 3, a recess 112A is formed in the first rafter 11A. The recess 112A has dimensions and a shape that allows it to fit with the projection 54. Therefore, when a worker places the first rafter 11A on the groove 51, the projection 54 and the recess 112A can be fitted together. This allows the worker to easily temporarily fix the first roof panel 10A to the roof frame 2 by hooking it onto it.

[0038] Furthermore, after temporarily fixing the first roof panel 10A to the truss 2, when the second roof panel 10B is placed on the purlins 6 and ridge beam 7, the support portion 113A at the upper end of the first rafter 11A and the lower end of the second rafter 11B join together. The support portion 113A and the lower end of the second rafter 11B have a stepped difference that allows them to join together. Therefore, as shown in Figure 6, when a worker places the second roof panel 10B on the purlins 6 and ridge beam 7, the first roof panel 10A can support the second roof panel 10B from below via the support portion 113A. This allows the second roof panel 10B to be easily temporarily fixed to the truss 2.

[0039] <Method for fixing roof panel 10> Next, we will explain how to fix the roof panels 10 to the roof frame 2. Prior to fixing the roof panels 10, we will assume that the construction of the roof frame 2 has been completed and that the first roof panel 10A and the second roof panel 10B, manufactured in a factory or similar facility, have been transported to the construction site. Figure 7 shows the procedure for fixing the first roof panel 10A and the second roof panel 10B to the roof structure 2. As shown in Figure 7, the roof panel 10 is first lifted above the roof structure 2 (step S10, corresponding to the first lifting step and the second lifting step of the present invention). Lifting machinery such as a crane is used when lifting the first roof panel 10A and the second roof panel 10B.

[0040] Next, the roof panel 10 at the eaves (the first roof panel 10A) is lowered and temporarily fixed to the roof structure 2 (step S11, corresponding to the first temporary fixing step of the present invention). When the first roof panel 10A is lowered, the surface to be joined 111A of the first rafter 11A is placed on the joint surface 53 of the groove 51 provided on the eaves beam 5 of the roof structure 2 and the joint surface (not shown) of the groove 61 provided on the purlin 6. At this time, the recess 112A formed in the first rafter 11A fits into the protrusions 54 provided on each of the grooves 51. As a result, the first roof panel 10A is hooked onto the eaves beam 5 and supported from below by the eaves beam 5 and the purlin 6, and is temporarily fixed.

[0041] Next, the upper roof panel 10 (second roof panel 10B) above the eaves is lowered and temporarily fixed to the roof structure 2 (step S12, corresponding to the second temporary fixing step of the present invention). When the second roof panel 10B is lowered, the surface to be joined of the second rafter 11B is placed on the joint surface (not shown) of the groove 61 provided in the purlin 6 of the roof structure 2. Also, the lower end of the second rafter 11B is joined to the support portion 113A at the upper end of the first rafter 11A, and is supported from below by the first rafter 11A. In this way, the second roof panel 10B is supported and temporarily fixed by the purlin 6 and the first roof panel 10A. At this point, the second waterproof sheet 13B is placed on top of the first waterproof sheet 13A (corresponding to the covering step of the present invention). As a result, at least a portion of the first waterproof sheet 13A is covered by the second waterproof sheet 13B.

[0042] Next, the upper roof panel 10 (second roof panel 10B) is lowered and temporarily fixed to the truss 2 (step S13). The temporary fixing of the second roof panel 10B is repeated until the second roof panel 10B is temporarily fixed to the ridge beam 7 at the top of the truss 2.

[0043] Finally, the worker permanently fixes the roof panel 10 to the truss 2 by nailing it in place (step S14). Furthermore, workers can construct the roof R by installing roofing materials such as tiles or slates on top of the roof panels 10 and covering the roof panels 10 with the roofing materials.

[0044] In the method of fixing the roof panel 10 described above, the first roof panel 10A can be easily temporarily fixed to the roof structure 2 by fitting together the recess 112A of the first rafter 11A, which constitutes the temporary fixing structure 1, and the protruding part 54 of the eaves beam 5 of the roof structure 2. Furthermore, by placing the second rafter 11B on the purlin 6 or ridge beam 7 and supporting the second roof panel 10B from below with the support part 113A of the first roof panel 10A, the second roof panel 10B can be easily temporarily fixed to the roof structure 2.

[0045] The above describes a temporary fixing structure 1 and temporary fixing method for a roof panel 10 according to one embodiment of the present invention. However, the above-described embodiment is merely an example to facilitate understanding of the present invention and does not limit the present invention. In the embodiments described above, a groove 51 having a joint surface 53 is formed by cutting the eaves beam 5, while a protrusion 54 is formed by partially not cutting it. However, the embodiments are not limited to this. A joint plate 8 provided with a protrusion 82 may be attached to the groove 51.

[0046] <First Torture> Figure 8 shows a perspective view of the groove 151 of the eaves beam 105 according to the first modified example, and a joint plate 8 attached to the groove 151 and having a protruding portion 82. As shown in Figure 8, a metal connecting plate 8 is attached to the groove 151 of the eaves beam 105. More specifically, the connecting plate 8 is attached to the groove 151 by driving in nails 83. However, screws may be used instead of nails 83.

[0047] The joining plate 8 has a joining surface 81 that connects to the first rafter 11A and can support the first rafter 11A. The joining surface 81 is an inclined surface that slopes downward from the upper surface 152 of the eaves beam 105 in the direction of the eaves (indicated by arrow A in Figure 8). Furthermore, the joining plate 8 is provided with a protrusion 82. The protrusion 82 has a substantially semicircular shape when viewed from above and protrudes upward from the joining surface 81. The protrusion 82 has a substantially semicircular shape when viewed from above. The protrusion 82 is formed by press working on the joining plate 8. However, the joining plate 8 is not limited to being made of metal. The joining plate 8 may be made of synthetic resin. The joining plate 8 corresponds to the plate-like body of the present invention.

[0048] The protruding portion 82 of the connecting plate 8 and the recessed portion 112A of the first rafter 11A described above can be fitted together, forming a temporary fixing structure 1 for temporarily fixing the first roof panel 10A to the roof frame 2. Therefore, similar to the embodiment described above, the first roof panel 10A can be easily temporarily fixed to the roof frame 2 by fitting the two together.

[0049] <Second variation> The protruding portion 54 may be the head 91 of the fastening bolt 9. Figure 9 shows a perspective view of the rafter 251 of the eaves beam 205 according to the second modified example, with the body portion (not shown) inserted into the rafter 251 and the head portion 91 protruding upward from the rafter 251.

[0050] As shown in Figure 9, fastening bolts 9 are inserted into the eaves beam 205. The fastening bolts 9 have a roughly cylindrical shape and consist of a body with screw grooves formed on its outer surface and a head 91 that is larger in diameter than the body. The groove 251 has an insertion hole pre-formed into which the body of the fastening bolt 9 can be inserted. Therefore, by inserting the body into the insertion hole, the head 91 of the fastening bolt 9 can be made to protrude upward from the joint surface 253 of the groove 251. Note that the member inserted into the insertion hole is not limited to the fastening bolt 9. It is sufficient if the member protrudes upward from the joint surface 253 when inserted into the insertion hole and can fasten the first roof panel 10A to the roof frame 2. The fastening bolt 9 corresponds to the insertion member of the present invention.

[0051] The head 91 of the fastening bolt 9 and the recess 112A of the first rafter 11A can be fitted together, forming a temporary fixing structure 1 for temporarily fixing the first roof panel 10A to the roof frame 2. Therefore, similar to the embodiment described above, the first roof panel 10A can be easily temporarily fixed to the roof frame 2 by fitting the two together.

[0052] In the embodiment described above, the roof panel 10 was described as having a first roof panel 10A and a second roof panel 10B located above the first roof panel 10A (towards the ridge beam 7 of the roof structure 2). However, it may also have a third roof panel located further above. [Explanation of Symbols]

[0053] 1. Temporary fixing structure 2. Roof structure 3 shed beams 4 hut bundle 5, 105, 205 eave girder 51, 151 shuffling 52, 152 top surface 53, 253 joint surface 54 Protrusion 6 Main house 61. Scooping 62 Top 7 Buildings 8. Joining plate (plate-shaped body) 81 Joint surface 82 Protrusion 83 Nail 9. Fastening bolts (insertion members) 91 Head 10 Roof Panels 10A First roof panel 11A First rafter 111A Surface to be joined 112A Recess 113A Support part 12A First roof sheathing 13A First waterproof sheet 10B Second roof panel 11B Second rafter 111B Lower end 12B Second roof sheathing 13B Second waterproof sheet R roof

Claims

1. A temporary fixing structure for temporarily fixing a roof truss, a first roof panel fixed to the eaves of the roof truss, and a second roof panel fixed above the first roof panel, The aforementioned roof structure comprises a purlin installed at the eaves, and a rafter and ridge beam installed above the purlin. The first roof panel comprises a plurality of first rafters erected on the eaves beam and the purlin adjacent to the eaves beam, and a first roof sheathing that covers the plurality of first rafters. The second roof panel comprises a plurality of second rafters erected on the purlin or ridge beam, and a second roof sheathing covering the plurality of second rafters. The eaves beam has a groove that supports the first rafter via a joint surface that connects with the first rafter, The aforementioned groove is provided with a projection that protrudes upward from the joining surface. The first rafter is a temporary fixing structure characterized in that a recess capable of fitting with the protruding portion is formed on the surface to be joined to the joint surface.

2. The joint surface of the aforementioned groove is an inclined surface that slopes downward in the direction of the eaves, The temporary fixing structure according to claim 1, characterized in that the protruding portion does not descend in the direction of the eaves but has a height equal to the upper surface of the eaves beam.

3. The aforementioned roof structure has a plate-like body that covers the aforementioned groove, The temporary fixing structure according to claim 1, characterized in that the protruding portion is provided on the plate-like body.

4. The aforementioned roof structure has an insertable member having a body portion having a roughly cylindrical shape and a head portion having a larger diameter than the body portion. The aforementioned scoop has an insertion hole into which the body portion can be inserted, The temporary fixing structure according to claim 1, characterized in that the protruding portion is the head of the insertion member into which the body portion is inserted.

5. The temporary fixing structure according to claim 1, characterized in that the upper end of the first rafter is provided with a support portion that connects to the lower end of the second rafter of the second roof panel and supports the second roof panel.

6. A temporary fixing method for temporarily fixing a roof truss, a first roof panel fixed to the eaves side of the roof truss, and a second roof panel fixed above the first roof panel, A first lifting step involves lifting the first roof panel above the roof structure, A first temporary fixing step involves lowering the first roof panel, placing the surface of the first rafter of the first roof panel that is to be joined onto the joint surface of the groove provided on the eaves beam of the roof structure, and temporarily fixing the first roof panel by supporting it on the eaves beam, A second lifting step involves lifting the second roof panel above the roof structure, The process includes a second temporary fixing step, in which the second roof panel is lowered, the connecting surface of the second rafter of the second roof panel is placed on the joint surface of the groove provided in the purlin of the roof structure, and the second roof panel is temporarily fixed by supporting the second roof panel with the purlin and the first roof panel, The first temporary fixing step is a temporary fixing method characterized by placing the first rafter on the groove provided on the eaves beam, and fitting a recess formed on the joined surface of the first rafter into a protruding portion of the eaves beam that protrudes above the joint surface.

7. The temporary fixing method according to claim 6, further comprising a covering step of covering at least a portion of the first waterproof sheet covering the first rafter and first roof deck of the first roof panel with a second waterproof sheet covering the second rafter and second roof deck of the second roof panel after the second temporary fixing step.

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