JP2019060165A - Roof construction method and roof structure - Google Patents

Abstract

To provide a roof construction method and a roof structure with an improved floor magnification of the roof construction surface.SOLUTION: A roof construction method in which a first rafter panel comprising a plurality of transverse members arranged substantially in parallel and a plurality of rafters substantially orthogonal to the plurality of lateral members and dropped at the top end are used, and it comprises a step having, on the lower surface of the horizontal rafter of the first rafter panel, drill holes formed in advance, and protrusively pre-arranging a pedestal hardware on the eaves of the roof skeleton, the main house and the top of the vines, and aligning the drill holes of the first rafter panel with the pedestal hardware of the roof skeleton, respectively, and bonding the first rafter panel to the roof skeleton by inserting and fitting the pedestal hardware of the roof skeleton into the drill hole of the first rafter panel.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a roof construction method and a roof structure.

A framework that forms the roof, a structure that supports the roof surface is called a shed. The cabin set supports vertical loads such as roofing materials, ceilings, and snow loads to the support framework and at the same time integrates the building and works to disperse horizontal force.
There are two types of cabins, Japanese-style cabin style and climbing-beam style.

  In the case of the Japanese-style hut system, a hut beam is placed over the eaves, and a shed is placed on top of that, and a main house and purlins are placed. A rafter is hung according to a roof slope on a purlin / rafter, and a blank plywood which is a foundation of a roofing material is pasted thereon (refer to Patent Document 1). The roof load is a mechanism that gathers on the cabin beam through the structural members and is supported entirely by the bending strength of the beam, and the existing floor magnification is low.

  In the climbing beam method, between the eaves girder is omitted the space between the purlins, and a climbing beam of flat rectangular timber is stretched at a pitch of 3 bars (910 mm) in the gradient direction, and structural plywood (24 mm to 30 mm thick) is directly stretched (Patent Document) 2). The climbing beam method is in widespread use in terms of the effective use of indoor spaces such as sloped ceilings and lofts and the rationalization of construction. Existence floor magnification is high.

Japanese Patent Application Laid-Open No. 10-008564 JP, 2017-040070, A

  In the conventional construction method as described above, the roof rolls rafters on eaves-to-gutter beams (horizontal beams) (girders, purlins and rafters are placed on the beams at regular intervals) or half notches (girders, purlins, beams Lower structural magnification is put on top of the structural plywood on top of a half of the rafter), and the transmission of floor rigidity is also reduced because the roof construction surface is nailed to the roof with nails. It will be done.

And with regard to the earthquake resistance of the house, it is necessary to secure the performance of the horizontal structure in addition to the performance of the wall in the seismic rating of the Quality Assurance Method, and it is necessary to satisfy the following equation.
Required floor magnification (conditions) ≦ present floor magnification (ability)
The floor floor of the 1st floor and the 2nd floor has floor beams assembled at intervals of 910 mm, and a thick structural plywood is put on the upper end. Exceed.

  The presence floor magnification of the R floor is evaluated by (floor magnification of the R floor floor + floor floor magnification of the roof floor). In order to secure the ceiling height such as the R-floor floor through the penetration floor and the slope ceiling, it may not be desirable to paste the structural plywood on all the R-floor floor.

  However, in terms of earthquake resistance of a house, it is common to put structural plywood on the R floor structure surface because the roof structure surface alone does not have enough existing floor magnification. In order to apply the structural plywood, it is also necessary to use a joist as a foundation of the plywood, a material for putting a beam, and time and effort.

  As described above, in the conventional construction method, the required floor magnification can not be satisfied only by the existing floor magnification of the roof construction surface, so it is difficult to clear the necessary floor magnification of the R floor construction surface. As a result, the floor joists are attached at regular intervals to the R floor structure surface, or structural plywood is pasted at 910 mm intervals, thick structural plywood is pasted by straddling floor beams at 910 mm intervals, or ceiling height is also hung. You are subject to design restrictions, such as restrictions (see the right side of Fig. 16).

  The present invention has been proposed in view of such conventional circumstances, and an object of the present invention is to provide a roof construction method and a roof structure in which the existing floor magnification of the roof structure is improved. is there.

As a result of intensive investigations to achieve the above object, the present inventors use a pituitary panel having a high ratio of existing floor magnification to drop a rafter into eaves-upper-mabari-headbeam, and a roofing rod of a pituitary panel. The present invention has been accomplished on the assumption that the above object can be achieved by using a pillar base metal (a metal joint for a wall column base) instead of a nail as a bonding method. That is, the present invention is as follows.
[1]
A first rafter panel comprising a plurality of transverse members arranged substantially in parallel and a plurality of rafters substantially orthogonally crossing the plurality of lateral members and dropped at the top end , It is a construction method of the roof,
A hollow hole is drilled in advance on the lower surface of the cross member of the first rafter panel,
A pedestal is pre-arranged on the eaves of the roof, the main house and the top of the vines,
Aligning the anchor holes of the first rafter panel with the column base of the roofing body, respectively;
Bonding the first rafter panel to the roof by inserting and fitting the column base material of the roof into the hollow hole of the first rafter panel. , Roof construction method.
[2]
Lifting the first rafter panel to have a slope substantially equal to the roof slope;
The first rafter panel is lowered onto the roof frame while keeping the lapping hole and the pillar base on the same straight line, the loom hole of the first rafter panel can be removed The roof construction method according to [1], wherein the column footing of the roof frame is inserted.
[3]
Wires are attached to the four corners of the first rafter panel and lifted by a crane,
The lengths of the two wires attached to the upper two corners of the water are fixed, and the lengths of the two wires attached to the two lower corners of the lower water are variable. The roof construction method according to [2], wherein the inclination of the first rafter panel is adjusted to be equal to the inclination of the roof slope by adjusting the lengths of the two side wires.
[4]
The construction method of the roof according to any one of [1] to [3], wherein the pillar base is a hole down pipe.
[5]
The hole down pipe has a through hole at the side surface portion,
An insertion hole is formed in advance on the side surface of the cross member of the first rafter panel at a position corresponding to the through hole of the hole down pipe inserted into the hole.
The roof construction method according to [4], wherein a drift pin is inserted into the through hole from the insertion hole to the hole down pipe inserted into the hollow hole of the first rafter panel.
[6]
In the eaves-girders, purlins and purlins of the roof frame, a notch having a wedge-shaped cross section is formed in accordance with the shape of the rafter of the first rafter panel, and the rafter of the first rafter panel is The roof construction method according to any one of [1] to [5], which is dropped into the main building of the roof frame.
[7]
In the panel joint portion where the two first rafter panels abut each other,
After a circular hole is drilled as a single hole in one plate material, a split plate material divided in the height direction of the circular hole is butted so that the circular hole and the plate material become approximately half. The roof construction method according to any one of [1] to [6], which is used as the purlin of the panel joint portion side of the first rafter panel.
[8]
The following steps;
Applying structural plywood on the first rafter panel joined onto the roof frame:
A second one having a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters which are bridged and further dropped substantially orthogonally between the horizontal members on the structural plywood. Process of constructing rafter panel:
Applying a venting cylinder edge on the second rafter panel: and applying a plywood on the second rafter panel and the venting cylinder edge:
The roof construction method according to any one of [1] to [7], further comprising:
[9]
The following steps;
A step of applying a filling insulation to the gap of the first rafter panel installed on the roof frame: and a filling insulation to the gap of the second rafter panel installed on the structural plywood Process of constructing:
The roof construction method according to [8], further comprising:
[10]
The eaves-girder, the main house and the purlin of the roof frame are constructed on site,
As the first rafter panel and the second panel, those previously manufactured in a factory are used. The construction method of the roof in any one of [1]-[9].
[11]
It has a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters which are bridged substantially orthogonally between the plurality of horizontal members and further dropped at the top end, and installed on the roof frame A first rafter panel,
By fitting the eaves-girder on the roof side, the main building, and the pillars protruding on the upper surface of the vines to the hollow hole drilled on the lower surface of the cross member of the first rafter panel A roof structure, characterized in that the first rafter panel is joined to the roof frame.
[12]
Structural plywood arranged on the first rafter panel installed on the roof frame and fixed with nails or screws;
It has a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters substantially perpendicular to the plurality of horizontal members and dropped, and is disposed on the structural plywood A second rafter panel,
A venting cylinder edge disposed on the second rafter panel;
The roof structure according to [11], further comprising: the second rafter panel; and a field plywood arranged on the venting cylinder edge.
[13]
The roof structure according to [12], wherein a filling insulation is disposed in a gap between the first rafter panel and the second rafter panel.
[14]
The house provided with the roof structure in any one of [11]-[13].

  ADVANTAGE OF THE INVENTION According to this invention, the roof structure which improved the existing floor magnification of a roof construction surface, and its construction method can be provided. As a result, it is possible to freely set the ceiling height, such as a sloped ceiling or a stairwell, without being restricted in design by the R floor structure surface.

It is a perspective view showing an example of 1 composition of a pit tree panel used by the present invention. It is a figure which shows the lower side of a pit tree panel, and is a figure which shows the state in which the mortise hole is formed in the pit tree panel. It is a figure which shows the structure of the split-bar shop in the panel joint part of a pitfall tree panel. It is a perspective view which shows one structural example of the upper rafter panel used by this invention. It is a figure which shows the state which constructed the roof frame. It is a figure which shows the state which installs a pit stop panel on a roof chassis. It is a figure which shows the state which lifted the pituitary panel. It is a figure which shows the state which inserts the pillar base material by the side of a roof rod into the mortise hole by the side of a pit tree panel. It is a figure which shows the state which constructed the filling heat insulating material in the clearance gap of the pitting panel. It is a figure which shows the state which constructed plywood for construction on a pitting panel. It is a figure which shows the state which constructed the upper rafter panel on structural plywood. It is a figure which shows the state which constructed the filling heat insulating material in the clearance gap of the upper rafter panel. It is a figure which shows the state which constructed the ventilation cylinder edge on the upper rafter panel. It is a figure which shows the state which constructed the Noji plywood on a ventilation drum edge. It is the figure which looked at one structural example of the roof structure which concerns on this invention from lower side. It is the figure which compared the design freedom degree of the ceiling by the conventional and the roof structure of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Roof panel
The roof panel used in the roof structure and construction method of the present embodiment will be described.
The roof structure 1 according to the present embodiment has a two-layer rafter structure of a ditch panel 10 (first rafter panel) and an upper rafter panel 20 (second rafter panel). The pituitary panel 10 mainly contributes to the structural performance, and the upper rafter panel 20 mainly contributes to the design and heat insulation performance.

(Pigship tree panel)
FIG. 1 is a perspective view showing one configuration example of a pituitary panel used in the present embodiment.
The pitted tree panel 10 is bridged across the plurality of horizontal members 11 disposed substantially in parallel and the plurality of horizontal members 11 substantially orthogonally, and is dropped into the plurality of horizontal members 11. It has a plurality of rafters 12.
In the pitted tree panel 10, a rafter 12 is dropped into the plurality of horizontal members 11 at the top end. Each of the plurality of horizontal members 11 corresponds to an eaves girder, a purlin and a purlin. By dropping the rafter 12 into the cross member 11, the existing floor magnification and the shear resistance can be increased as compared with the conventional method in which the rafter is simply rolled on the cross member and nailed. In the example shown in FIG. 1, the horizontal mounting member 11 is subjected to a large insertion process, and the rafter 12 is swallowed in the main building 104 by about 15 mm in the horizontal distance.

FIG. 2 is a view showing the lower side (the side to be joined to the roof casing) of the pit stop panel.
In the pitted tree panel 10, the mortise holes 15 for the column metal 110 are previously bored on the lower surface of the cross member 11, and the lateral holes 16 for the drift pin 111 are communicated with the mortise holes 15 on the side. Pre-drilled in advance. Although specifically described later, the mortise hole 15 is a hole for inserting the column base 110 provided on the side of the roof frame 100 when the pit stop panel 10 is installed on the roof frame 100, and the lateral hole 16 is These holes are holes (insertion holes) into which the drift pins 111 are inserted in order to drive the drift pins 111 into the pedestals 110 inserted into the hollow holes 15.

(Panel joint part)
FIG. 3 is a view showing a groin in a panel joint portion of a pituitary panel.
In the panel joint portion where the two pitted tree panels 10 are abutted and joined together, the horizontal mounting member 11 (principles) is a split bar and has a normal half width. That is, as shown in FIG. 3 (a), after a circular hole for pipe (hollow hole 15) is drilled in one plate member 18, the circular hole and the plate become half as shown in FIG. 3 (b). As described above, those divided in the longitudinal direction (the height direction of the circular hole) are used respectively as horizontal members 11 (prosthesis) on the panel joint portion side of the two pitted pit panels 10 to be abutted (breaker). The split bar 12 is swallowed 15 mm horizontally at a horizontal distance, and is put into a large size.

  If it is intended to form a hollow having a semicircular cross-section in two plates and form a circular hole together, it is difficult to perfectly match the position and the shape of the hollow to form a circular hole. After a circular hole (Hozo hole 15) is drilled in one plate (horizontal frame 11), the plate is broken so that the hole is a half (semicircle), so that two plates are cut later. When the plates are put together, a more complete circular hole can be formed easily and reliably.

That is, the two purlins abutted at the panel joint portion are not separate plate members, and those which are originally one plate member are divided into two pieces (divided ramies) are used. The split bar is integrated by sandwiching the support metal 110 from both sides with split bars of the two pit tree panels 10 and fixing them with the drift pins 111.
The circular hole has a center line in the thickness direction of the plate material constituting the split-type house, and the diameter of the circular hole, so that the thickness of the two plate materials after splitting that make up each split-type house 104 is almost the same. It is preferable to drill so as to be substantially the same.

(Top rafter panel)
FIG. 4 is a perspective view showing an example of the configuration of the upper rafter panel used in the present embodiment.
The upper rafter panel 20 is bridged substantially orthogonally between a plurality of horizontal members 21 (equivalent to an eaves girder, a main house and a purlin) arranged substantially in parallel, and the horizontal members 21 and dropped at a ceiling end. And a plurality of rafters 22 incorporated therein.
Since the upper rafter panel 20 is a base of the plywood 70, the rafters 22 are arranged at a pitch of, for example, 910 mm (in the kerf part, the roll also serves as the base). Add rafter 22.

Such roof panels (droplet panel 10 and top rafter panel 20) are constructed in advance at the factory and brought to the site for construction. This can reduce the work load at the site.
The sizes of the pitted tree panel 10 and the top bark panel 20 are preferably sized for riding on a track in consideration of the efficiency of transportation. Specifically, for example, it is about 1820 mm wide × 3640 to 5640 mm long.

<Construction method of roof>
Next, the construction method of the roof of this embodiment using the roof panel (pit stop panel 10 and top rafter panel 20) which was mentioned above is demonstrated.
The construction method of the roof of this embodiment is a construction method combining the Japanese shed method and the climbing beam method. That is, a part of the shed is panelized at the factory and installed and fixed on the roof.

(1) As shown in FIG. 5, the eaves-girder 103 of the roof covering 100, the main house 104, and the purlin 105 are constructed on the site.
The roof frame 100 is constructed on site at the eaves-girder 103, the main house 104, and the purlin 105 similarly to the conventional Japanese-style cabin method. That is, a shed bundle 102 is placed on the shed beam 101, and the eaves-girder 103, the purlin 104 and the purlin 105 are bridged.
In the conventional Japanese-style cabin system, rafters are arranged on the eaves girder, the main house, and the purlins (vultures), but in the present embodiment, roof panels (pitit panel panels) which are unitized in advance in place of rafters. 10 and the upper rafter panel 20) are hung by a crane, and installed and fixed on the roof frame 100 (the eaves beam 103, the main house 104 and the purlin 105).
A portion where the eaves beam 103, the purlin 104 and the purlin 105 which constitute the roof frame 100 intersect with the rafter 12 of the pitted panel 10 forms a notch 108 having, for example, a wedge shape in cross section in accordance with the shape of the rafter 12. It is preferable to keep the When installing the pitted tree panel 10 on the roof frame 100, the strength can be increased by dropping it into the rafter 12 of the pitted tree panel 10 into the eaves beam 103 of the roof frame 100, the main building 104 and the notch 108 of the lumber 105. it can.

Further, as shown in FIG. 2 and FIG. 5, pillars 110 are provided on the upper surfaces of the eaves-girder 103, the main house 104 and the plinth 105 constituting the roofing body 100 at predetermined intervals.
In the present embodiment, the pedestal 110 is, for example, a hole down pipe. The hole down pipe is a cylindrical member made of metal, and usually, a cut steel pipe which is commercially available is used. The hole down pipe has an internal thread at its lower end, which is screwed to the pulling bolt, and has through holes in the upper two places of the internal thread so as to be orthogonal to each other when viewed from directly above . Other than this, it is possible to appropriately select and use a metal, a pipe, a pin or the like generally used as a pedestal.

(2) As shown in FIG. 6, the pituitary panel 10 is lifted up on the roof casing 100.
The pit stop panel 10 of the present embodiment is lifted with four corners as a fulcrum and installed on the roof 100. At this time, the slope of the pitted panel 10 is lifted so as to have a slope substantially equal to that of the roof slope to be constructed, and is lowered substantially vertically to the purlin 104.
The hanging angle of the roof panel is adjusted in advance, and the pitting panel is substantially vertically maintained while the flat hole 15 of the pitting panel 10 and the pedestal 110 of the roofing body 100 are on substantially the same straight line. 10 by dropping 10 on the roof frame 100, inserting the Hoso hole 15 on the lower surface of the cross member 11 (principal) on the pitting panel 10 side and the pin (pillar 110) on the rod side in a straight line Can.

FIG. 7 is a diagram showing a state in which the pituitary panel 10 of the present embodiment is picked up.
Wires 80a to 80d are attached to the four corners of the pitted tree panel 10, respectively, and are lifted using a crane (not shown) with the four corners as a fulcrum.
Two places on the upper side of the water use short equal length wires 80a and 80b (chain). The two points under the water allow the wire length adjustment to be freely changed in the field by means of, for example, a chain block 90 at the tips of the wires 80c and 80d.
As a result, the lengths of the wires 80a and 80b are fixed at the two locations above the water, but since the lengths of the wires can be adjusted at the two locations below the water, the lengths of the wires 80c and 80d below the water It can be adjusted to a gentle slope by shortening (close to the wire length above water) and can be adjusted to a steep slope by increasing the length below water. Adjust the slope of the panel (pit stop panel 10) and lift it so that the slope is almost the same as the roof slope to be constructed.

(2) As shown in FIG. 8, the pituitary panel 10 is joined and fixed onto the roof casing 100.
In the present embodiment, a pin construction method using a column base 110 instead of a nail is employed for joining the roof casing 100 and the pitted panel 10.
Pillars 110 are protrusively provided on the upper surfaces of the eaves-girders 103, the purlins 104, and the purlins 105 constituting the roof frame 100 at regular intervals.
On the other hand, in the lower surface of the horizontal mounting member 11 of the pitted tree panel 10, a horizontal hole 15 is formed in advance and a lateral hole 16 is formed in the side. The hole 15 is a hole for inserting a pillar metal 110 provided on the rod side when the pit stop panel 10 is installed on the roof 100, and the lateral hole 16 is a pillar inserted in the hole 15 This is a hole (insertion hole) into which the drift pin 111 is inserted in order to drive the drift pin 111 into the metal object 110.
When the roof panel is installed on the roof 100, the column base 110 on the roof 100 side and the hole 15 on the roof panel side are aligned and inserted, and the drift pin 111 is inserted and fixed from the side Do. Specifically, for example, the drift pin 111 is inserted from the side hole 16 and fixed to the through hole of the hole down pipe (the pillar 110) inserted into the hollow hole 15.

In the conventional construction method, it is necessary to carry out work such as inclination alignment and alignment while suspending the roof panel with a crane or the like, and the workability is extremely poor, and there is also a problem in safety.
On the other hand, in the present embodiment, the pituitary panel 10 is lifted so as to have a slope substantially equal to the slope of the roof to be constructed, and the mortise hole 15 and the pillar base 110 are kept substantially colinear. By dropping the pituitary panel 10 onto the roof casing 100, the pole foot 110 of the roof casing 100 is inserted into the hole 15 of the pituitary panel 10.
The pitted tree panel 10 is lifted so as to have a slope substantially equal to that of the roof slope to be constructed, and is lowered substantially perpendicularly to the purlin 104 of the roof 100, so that the bottom hole 15 of the lower end of the purlin 104 on the panel side , And can be inserted straight in alignment with the column base 110 on the roof 100 side. In addition, since the entire panel can be positioned only by aligning the pedestals 110 and the mortise holes 15, the on-site operability and safety can be improved.
In the panel joint portion, the pillar base 110 is sandwiched between two split tree panels of pitted tree panels 10 and fixed by the drift pins 111, thereby integrating the split roofs.

For example, the placement standard of pituitary panel 10 is to arrange the centering beam of the uphill beam on the side of the fence, center the split bar in the middle part, and place on the joint in the width direction of pituitary panel 10 , Align the outer surfaces of the pituitary panel 10 with each other.
Furthermore, it is preferable to fix the pituitary panel 10 on the roof 100 by nails or screws. With regard to the nailing or screwing of the pitted tree panel 10, one may be driven in from the both sides, or two from the other side, in the joint between the rafter 12 and the purlin 104 of the pitted tree panel 10. In addition, as for the connection between the uplift beam and the cross member 11 (principles), one may be driven in from each side or two may be driven in from one side.

(Relationship between construction method of pituitary panel and structural strength)
Here, in the present embodiment, the reason why the method of assembling the pituitary panel 10 contributes to the structural strength will be described.
The roof structure 1 of the present embodiment has a two-layered structure of a pitted panel 10 and a top bar panel 20, and the pitted panel 10 is a rafter on the horizontal members 11 (eaves, purlins and purlins). 12 is dropped at the ceiling end and the construction plywood 40 is put on it, and it is the assembly method with the highest floor magnification. Furthermore, as a method of joining the pitted panel 10 to the roof 100, a pillar base 110 is used instead of a nail or a screw as in the conventional method.
For this reason, the roof structure 1 of the present embodiment has not only a tensile force usually required for the roof but also a shear resistance. By joining using the column base 110, the shear resistance is higher than when nails or screws are used, and the rigidity of the entire building can be secured as a roof construction surface.

In addition, although the upper rafter panel 20 mentioned later also contributes a little to rigidity, the effect is excluded in structural calculation. The top rafter panel 20 mainly contributes to the design and heat insulation performance of the roof structure.
Thus, according to the roof structure 1 of this embodiment, the required floor magnification of the R floor can be satisfied only by the existing floor magnification of the roof construction surface. As a result, in order to satisfy the necessary floor magnification of the R floor by using the roof panels (the pit stop panel 10 and the top bar panel 20) according to the present embodiment, the design restriction is not imposed on the R floor floor surface, The ceiling height can be set freely, such as providing a sloped ceiling or a brow on the top floor.

(3) As shown in FIG. 9, the filling heat insulating material 30 is applied to the gap of the pitted panel 10 joined on the roof 100.
The filling heat insulating material 30 can use what is normally used as a heat insulating material of a residential building.
In the present specification, “the gap of the pit tree panel 10” refers to a space surrounded by the plurality of horizontal members 11 and the plurality of rafters 12 which constitute the pit tree panel 10. The same applies to "a gap of the upper rafter panel 20" described later.
The filled heat insulating material 30 may be cut (pre-cut) in advance at a factory according to the size of the gap of the pitted tree panel 10.

(4) As shown in FIG. 10, structural plywood 40 is constructed on the pitted panel 10 joined on the roof 100.
The structural plywood 40 is placed on the pitted panel 10 joined on the roof 100 and fixed with nails or screws.
Structural plywoods 40 are aligned with each other in a direction (horizontal direction) substantially orthogonal to the direction (longitudinal direction) of the rafter 12, and fixed with nails or screws.

(5) As shown in FIG. 11, the upper rafter panel 20 is constructed on the structural plywood 40.
The upper rafter panel 20 is placed on the structural plywood 40 and fixed with nails or screws. The upper rafter panel 20 mainly contributes to the design of the roof and the heat insulation performance.
In the upper part of the outer wall, place a rafter 12 roll, if it is a roll. The upper rafter panel 20 is arranged with the intersection of the eaves side wall core and the upper end of the structural plywood 40 as the arrangement reference line of the rafter, and the arrangement reference line is aligned with the water upper side of the rafter. As the arrangement standard of the upper rafter panel 20, centering is performed on the side of the sash and the middle portion, and the outer surface of the upper rafter panel 20 is aligned at the panel joint portion. At the intersection of the eaves and the temple, give priority to the gang.

  With regard to the nailing or screwing of the upper rafter panel 20, the rafter 22 and the portion of the falling may be driven in one by one from the both sides, or may be driven in two from one side. In addition, as for the part of the roll, it is also possible to drive one from each side or two from one side.

(6) As shown in FIG. 12, the filled heat insulating material 31 is applied to the gap between the upper rafter panels 20.
The heat insulating material 31 is applied to the gap between the upper rafter panel 20 and the anti-rolling member. The filled heat insulating material 30 may be just above the living room portion of the house.
The filling heat insulating material 31 can use what is normally used as a heat insulating material of a residential building.
The filled heat insulating material 31 may be previously cut (pre-cut) in the factory according to the size of the gap of the upper rafter panel 20.
By arranging the filled heat insulating materials 30, 31 in the gaps of the pitted tree panel 10 and the gaps of the upper rafter panel 20, the heat insulating material is double-packed in the upper and lower directions, and the heat insulating performance of the roof is enhanced. it can.

(7) As shown in FIG. 13, a ventilation cylinder edge 50 is applied on the second rafter panel 20.
Ventilation drum edges 50 are arranged at predetermined intervals (for example, 455 mm pitch) on the top of the upper rafter panel 20 and the lower pit panel 10.
Also in the direction of the short side of the plywood 70 to be constructed in the post-process (8), a ventilating cylinder rim 50 is disposed as a base of the plywood 60. In the direction of the short side of the plywood 70, in order to ensure ventilation, predetermined widths on both sides are opened. The ventilation cylinder edge 50 is disposed so that the ground level of the outer periphery of the plywood 70 is aligned. In addition, since there is no foundation immediately below the end of the plywood 70 on the side of the fence, the ventilation cylinder edge 50 may be additionally disposed vertically.
The venting cylinder edge 50 of the roll is only fixed and not fixed.
At the panel joint portion of the upper rafter panel 20, the ventilating cylinder edge 50 is shifted inward and applied. This secures a gap for inserting a gasket after panel construction.

(8) As shown in FIG. 14, the plywood 70 is constructed on the second rafter panel 20 and the ventilation drum edge 50.
Place the plywood 60 on the second rafter panel 20 and the venting cylinder edge 50 and fix it with nails or screws.
In the direction of the rafter 12 (longitudinal direction), structural plywoods 40 are arranged side by side with core sandwiches 60 aligned with each other, and fixed with nails or screws (vertically pasted).
The blank plywood 60 is constructed based on the position shifted inward by a predetermined dimension (for example, 5 mm) from the panel joint portion, as with the ventilation cylinder rim 50.
The outer dimensions of the plywood 70 are to be extended from the outer surface of the nasal protection base and the gauze base.

(9) The roofing material is constructed on the plywood 70.
A roofing material (not shown) such as a tile, a slate, and a metal plate is disposed on the upper surface of the plywood 70, and fixed with nails or screws.
In addition, prior to the construction of the upper covering material, it is possible to lay an asphalt roofing or synthetic polymer sheet, for example, which is mainly used at present, for the purpose of waterproofing on the surface of the plywood 70 for the main purpose. .
Thus, a roof structure 1 as shown in FIG. 15 is completed.

  In the roof structure 1 constructed by the above-described method, the pit stop panel 10 is bridged substantially orthogonally to the plurality of horizontal members 11 arranged substantially in parallel and the plurality of horizontal members 11 Together with a plurality of rafters 12 dropped into the plurality of horizontal members 11 and including a pitted tree panel 10 installed on the roof 100, the lateral members 11 of the pitted tree panel 10 The pitted panel 10 is a roof by fitting an eaves beam 103 on the side of the roof 100, a main building 104, and a pillar base 110 provided on the upper surface of the lumber 105 in a lapping hole 15 drilled on the lower surface. It is joined to the housing 100.

  The roof structure 1 is further disposed on the pitted panel 10, and is provided with a structural plywood 40 fixed by nails or screws, a plurality of transverse members 11 disposed substantially in parallel, and the plurality of lateral members An upper rafter panel 20 having a plurality of rafters 12 bridged substantially orthogonally between the upper and lower rafters 11 and a ventilation drum edge 50 provided on the upper rafter panel 20 disposed on the structural plywood 40 And a rafter plywood 20 disposed on the upper rafter panel 20 and the ventilation cylinder rim 50.

  In the roof structure 1 of the present embodiment, it is preferable that the filled heat insulating materials 30 and 31 be disposed in the gaps between the pitting panels 10 and the top rafter panels 20. The thermal insulation will be doubly filled, which can enhance the thermal insulation performance of the roof.

  The roof structure 1 of the present embodiment has a two-layered structure of a pituitary panel 10 and a top barbed panel 20, and the pituitary panel 10 has a plurality of horizontal members 11 (eaves-main house-purlin) The rafters 12 are dropped and the structural plywood 40 is pasted, which has a high floor magnification. Furthermore, for joining the pitted tree panel 10 to the roof 100, a pedestal 111 is used instead of the conventional nail or screw.

For this reason, the roof structure 1 of the present embodiment has not only a tensile force usually required for the roof but also a shear resistance. By joining using the column base 110, the shear resistance is higher than in the case of using a nail, and the rigidity of the entire building can be secured as a roof construction surface.
Therefore, according to the roof structure 1 of this embodiment and the house provided with the roof structure 1, the required floor magnification of the R floor can be satisfied only by the existing floor magnification of the roof construction surface.

  Thereby, as shown on the left side of FIG. 16, according to the house provided with the roof structure 1 of the present embodiment, the R floor structure surface is not restricted in design, and a sloped ceiling or a stairwell is provided on the top floor, etc. You can freely set the ceiling height. The right side of FIG. 16 is a view showing the conventional roof structure 1. In order to receive the design restriction on the R floor structure surface, the ceiling height is set freely, such as providing a sloped ceiling or a through hole on the top floor. It was difficult to do.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this, It can change suitably in the range which does not deviate from the meaning of invention.

  By using the roof construction method and roof structure according to the present invention, in order to satisfy the required floor magnification of the R floor only with the existing floor magnification of the roof construction surface, there is no design restriction on the R floor construction surface, and a slope A ceiling, a through hole, etc. can be provided, and it can be widely used as a construction method and roof structure of a residential roof.

1 roof structure 10 pit tree panel (1st rafter panel)
11 Horizontal frame 12 Rafter 15 Flat hole 16 Horizontal hole 20 Upper rafter panel (second rafter panel)
21 Cross member 22 Rafter 30, 31 Filled insulation material 40 Structural plywood 50 Attenuated cylinder edge 60 Wild plywood 100 Roofing body 103 House girder 104 Purlin 105 Building lumber 110 Column footing 111 Drift pin

Claims (14)

A first rafter panel comprising a plurality of transverse members arranged substantially in parallel and a plurality of rafters substantially orthogonally crossing the plurality of lateral members and dropped at the top end , It is a construction method of the roof,
A hollow hole is drilled in advance on the lower surface of the cross member of the first rafter panel,
A pedestal is pre-arranged on the eaves of the roof, the main house and the top of the vines,
Aligning the anchor holes of the first rafter panel with the column base of the roofing body, respectively;
Bonding the first rafter panel to the roof by inserting and fitting the column base material of the roof into the hollow hole of the first rafter panel. , Roof construction method. Lifting the first rafter panel to have a slope substantially equal to the roof slope;
The first rafter panel is lowered onto the roof frame while keeping the lapping hole and the pillar base on the same straight line, the loom hole of the first rafter panel can be removed The roof construction method according to claim 1, wherein the column footing of the roof frame is inserted. Wires are attached to the four corners of the first rafter panel and lifted by a crane,
The lengths of the two wires attached to the upper two corners of the water are fixed, and the lengths of the two wires attached to the two lower corners of the lower water are variable. The roof construction method according to claim 2, wherein the inclination of the first rafter panel is adjusted to be equal to the inclination of the roof slope by adjusting the length of the two side wires.   The roof construction method according to any one of claims 1 to 3, wherein the support is a hole down pipe. The hole down pipe has a through hole at the side surface portion,
An insertion hole is formed in advance on the side surface of the cross member of the first rafter panel at a position corresponding to the through hole of the hole down pipe inserted into the hole.
The roof construction method according to claim 4, wherein a drift pin is inserted from the insertion hole into the through hole into the hole down pipe inserted into the hollow hole of the first rafter panel.   In the eaves-girders, purlins and purlins of the roof frame, a notch having a wedge-shaped cross section is formed in accordance with the shape of the rafter of the first rafter panel, and the rafter of the first rafter panel is The roof construction method according to any one of claims 1 to 5, which is dropped into the main building of the roof frame. In the panel joint portion where the two first rafter panels abut each other,
After a circular hole is drilled as a single hole in one plate material, a split plate material divided in the height direction of the circular hole is butted so that the circular hole and the plate material become approximately half. The roof construction method according to any one of claims 1 to 6, wherein each of the first rafter panels is used as the purlin of the panel joint portion side. The following steps;
Applying structural plywood on the first rafter panel joined onto the roof frame:
A second one having a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters which are bridged and further dropped substantially orthogonally between the horizontal members on the structural plywood. Process of constructing rafter panel:
Applying a venting cylinder edge on the second rafter panel: and applying a plywood on the second rafter panel and the venting cylinder edge:
The roof construction method according to any one of claims 1 to 7, further comprising The following steps;
A step of applying a filling insulation to the gap of the first rafter panel installed on the roof frame: and a filling insulation to the gap of the second rafter panel installed on the structural plywood Process of constructing:
The roof construction method according to claim 8, further comprising The eaves-girder, the main house and the purlin of the roof frame are constructed on site,
As the first rafter panel and the second panel, those previously manufactured in a factory are used. The construction method of the roof as described in any one of Claims 1-9. It has a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters which are bridged substantially orthogonally between the plurality of horizontal members and further dropped at the top end, and installed on the roof frame A first rafter panel,
By fitting the eaves-girder on the roof side, the main building, and the pillars protruding on the upper surface of the vines to the hollow hole drilled on the lower surface of the cross member of the first rafter panel A roof structure, characterized in that the first rafter panel is joined to the roof frame. Structural plywood arranged on the first rafter panel installed on the roof frame and fixed with nails or screws;
It has a plurality of horizontal members arranged substantially in parallel, and a plurality of rafters substantially perpendicular to the plurality of horizontal members and dropped, and is disposed on the structural plywood A second rafter panel,
A venting cylinder edge disposed on the second rafter panel;
The roof structure according to claim 11, further comprising: the second rafter panel and a field plywood arranged on the venting cylinder edge.   The roof construction according to claim 12, wherein a filling insulation is arranged in the gap between the first rafter panel and the second rafter panel.   A house provided with the roof structure according to any one of claims 11 to 13.

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