JP2004225301A - Eaves edge structure of corner section or trough section and eaves edge construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new eaves edge structure capable of facilitating the adjustment of dimensions of extrusive part of an eaves in a corner section or a trough section to increase efficiency of roof construction. <P>SOLUTION: The eaves edge structure is so constituted that a corner rafter 2 is diagonally erected between a projected corner angle section A of a pole plate 1 or the like and a strut 6 or the like on a building body side, and after the lower end section of the corner rafter 2 is connected to the projected corner angle section A so as not to project it to the eaves side rather than the projected corner angle section A, an eaves corner rafter 20 supporting a roof load for an eaves part is connected to the lower end section of the corner rafter 2 in the extended direction of the corner rafter 2. The eaves corner rafter 20 comprises a main material 21 having sectional dimensions of the same width as that of the corner rafter 2 and reinforcing materials 22 attached to both sides thereof, and each reinforcing material 22 is extended to the building body side rather than the main material 21 to fix the extended part to both sides of the corner rafter 2 with a screw or a nail. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to an eaves structure and an eaves construction method at a corner or a valley of a roof frame having a wooden structure or a wooden structure similar thereto.
[0002]
[Prior art]
In a roof frame of a wood-based industrialized house, a corner or a valley of a sloped roof is generally structured as shown in FIG. The illustrated example is a corner formed on a roof of a ridge or the like, but a protruding corner A where two eaves girder 1 (1a, 1b) or a similar horizontal member is joined in an orthogonal state. A corner block 2 extending to the eaves is placed diagonally on top and fixed. An upper end portion (not shown) of the corner block 2 is joined to a purlin, a ridge bundle or a shed bundle (a pillar if the roof is a lower roof of a lower floor) or the like. Then, a plurality of rafters 3 along the slope direction of the roof are attached at appropriate intervals from both sides of the corner block 2 to the eaves girder 1. The rafters 3 are also extended to the eaves, and the ends of the corner trees 2 and the rafters 3 are connected horizontally by eaves purlins 4 or the like. Further, a field board, a roof panel, and the like are attached to these rafters 3.
[0003]
In such a roof structure, the cross section of the corner block 2 is usually not a simple rectangle but a mountain shape in which the top end and the bottom end are inclined downward on both sides with respect to the vertical center plane. Therefore, when fixing such a corner block 2 to the protruding corner A of the eaves girder 1, the joining surfaces of the two members are cut out into a special shape and engaged with each other, or are joined via a special joining hardware. are doing. Such a joint structure is proposed in Patent Documents 1 to 5, for example.
[0004]
[Patent Document 1]
JP-A-7-34585 [Patent Document 2]
JP-A-7-34586 [Patent Document 3]
JP-A-7-34587 [Patent Document 4]
JP-A-11-1986 [Patent Document 5]
JP-A-11-247345
[Problems to be solved by the invention]
In the roof structure as described above, it is necessary to precisely adjust the protrusion dimension of the eaves in order to finish the eaves with high accuracy. This projection dimension is based on the position of the eaves girder. At the time of adjusting the extension of the eaves, a black ink X is struck at the top of the eaves girder 1 at the site, and a black ink Y on the side of the corner 2 is determined based on the eaves. Align with black X as eaves digit 1. If the corner piece 2 is correctly positioned, then the rafter 3 is similarly positioned.
[0006]
In such a positioning operation, naturally, the operation of moving the corner block 2 itself by minute dimensions in the material length direction in a state where the corner block 2 is mounted on the protruding corner A of the eaves girder 1 occurs. However, positioning the large-sized corner block 2 at a high place where the scaffold is difficult and in a diagonal direction is an operation with considerable labor and difficulty.
[0007]
In particular, in recent years, in the field of industrialized housing, unitization and panelization of members have been advanced, and reasonable hardware has been frequently used for joints, so that the span of a cabin frame structure and the cross-sectional dimensions of structural members have increased. There is a tendency. For this reason, corners and the like are also becoming longer and larger in cross section, and the positioning work as described above requires more man-hours.
[0008]
In addition, it is not possible to proceed to the next step of attaching the rafter 3, the eaves purlin 4 and the like until the fixing of the corner block 2 is completed. If it takes time to position the corner block 2, a wasteful waiting time for other workers is generated, and the construction efficiency is reduced. The same is true not only for the corners of the roof but also for the valleys.
[0009]
Therefore, an object of the present invention is to provide a new eaves structure in which the eaves can be easily adjusted at corners and valleys to improve the efficiency of roof construction.
[0010]
[Means for Solving the Problems]
In the eaves structure at the corner of the present invention, a corner block is diagonally erected between an eave girder or a similar horizontal member and a purlin, ridge bundle, hut bundle, pillar or similar structural material on the building body side. The lower end of the corner block is connected to the eaves girder or the cross member, and the lower end of the corner block is connected to an eaves corner supporting the roof load of the eaves portion in the extending direction of the corner block. It is characterized by the following.
[0011]
Further, the eave corner block is composed of a main member having the same cross-sectional dimension as the corner block, and additional members attached to both side surfaces of the main member. Each of the additional members extends closer to the building body than the main member. It is taken out, and this extension part is fixed to each corner with screws or nails in a state of being superimposed on each side of the corner, and the top of the main material and the top of the corner are through a reinforcing strip in the form of a flat strip. It is characterized by being connected.
[0012]
Further, the valley eaves structure of the present invention is such that a valley is inclined between an eaves girder or a similar horizontal member and a ridge, ridge, shed, pillar or similar structural material on the building body side. The lower end of the valley is connected to the eave girder or the cross member, and the lower end of the valley is provided with an eave valley that supports the roof load of the eaves portion. It is characterized by being connected in a direction.
[0013]
Further, the eaves valley is composed of a main material having the same cross-sectional dimension as the valley, and additional materials attached to both sides of the main material. To the valley with screws or nails attached to the valley in a state where the extended portion overlaps each side of the valley, and the top of the main material and the top of the valley are flat strip-shaped. It is characterized by being connected via a reinforcing metal.
[0014]
Further, the corner / valley eaves construction method of the present invention comprises an eaves girder facing the eaves or a transverse member similar thereto, and a purlin, a bundle, a shed bundle, a pillar or a similar structure provided on the building body side. A corner or a valley is erected diagonally between the timber and the lower end of the corner or the valley is connected to the eaves girder or the cross member. An eaves corner or an eaves valley supporting a load is connected in the extension direction of the corners or the valleys.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that common names and reference numerals are used for parts and members common to the configuration of the eaves tip shown in the conventional roof structure (FIG. 7).
[0016]
<Roof frame>
FIG. 1 is a plan view of a deformed gradient roof according to an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing a hut frame structure of the roof shown in FIG.
[0017]
1 and 2, reference numeral 1 (1a, 1b, 1c,...) Denotes a transverse member such as an eaves girder or a beam corresponding thereto. Reference numeral 5 denotes a hut beam, and reference numerals 6a, 6b, and 6c denote a shed bundle and a ridge bundle standing on the hut beam. However, in the present description, the ridge bundles 6a and 6c that support the ridge portion and the other hut bundles 6b are collectively referred to as a bundle material 6 unless otherwise distinguished. The ridge bundles 6a and the ridge bundles 6c are connected to each other via ridges 7 (7a, 7b).
[0018]
This roof has three corners and one valley. Corner trees 2 (2a, 2b) are installed at the corners, and valleys 8 are installed obliquely at the valleys. Then, rafters 3 are erected from the purlin 7, the corner block 2 or the valley 8 to each eave girder 1. Hereinafter, the structures of the corners and the valleys will be described in detail.
[0019]
<Corner>
3 and 4 show the detailed structure of the corner. In the illustrated embodiment, the corner block 2 is divided into an upper corner block 2a and a lower corner block 2b. The upper corner block 2a is between the ridge bundle 6a and the shed bundle 6b, and the lower corner block 2b is connected to the shed bundle 6b. Each is erected between the corner A. Further, in this embodiment, the ridge bundle 6a and the shed bundle 6b connected to the corner block 2 are rotated by 45 degrees around the axis with respect to the direction of the center of the building, so that the side surfaces of the bundle 6 are the center of the corner block 2. It is erected so as to be orthogonal to.
[0020]
The corner block 2 and the bundle member 6 and the eaves girder 1 are connected via metal joints 9 (9a, 9b, 9c) made of steel plates as shown in the figure. The metal fittings 9a and 9b on the side of the bundle 6 are formed by projecting two connecting plates from both side edges of the back plate. The back plate is fastened to the bundle 6 with bolts and nuts, and the connecting plate is connected to the corner block 2. By inserting a drift pin from the side of the corner block 2 into the slit formed at the end of the corner block 2, the corner block 2 and the bundle 6 are connected. In addition, the joint metal 9c on the eaves girder 1 side is formed by projecting a piece of a connecting plate at one end of a tenon girder pipe. The tenon girder pipe is inserted into a tenon hole formed on the eaves girder 1 and fixed with a drift pin. The connecting plate is inserted into a slit formed at the end of the corner block 2 and fixed with a drift pin.
[0021]
Thus, in the present invention, the lower end of the corner block 2 is formed to the length of the eaves girder 1 and does not extend to the eaves tip. Therefore, if a small clearance is provided between the eaves girder 1 and the bundle material 6 by means of the above-mentioned joint hardware 9, and the corner block 2 is connected, the work of positioning the corner block 2 in accordance with the extension of the eaves is unnecessary. Thus, the corner block 2 can be easily and quickly erected.
[0022]
Further, in this structure, the corner block 2 is supported only by the eaves girder 1 and the bundle 6, and the corner block 2 is not joined to a lateral member such as a purlin beam. Therefore, as shown in the cross-sectional view attached in FIG. 4, the cross-sectional shape of the corner block 2 can be such that the lower end can be flat and the mountain-shaped inclined surface is formed only at the top end. As a result, the processing of the members of the corner block 2 is facilitated, and the connection portion with the eaves girder 1 is significantly simplified as compared with the complicated joining form described in the above-mentioned conventional technology.
[0023]
An eaves corner 20 which is a main part of the present invention is added to the lower end of the corner eaves 2 fixed on the eaves girder 1, and the eaves corner 20 supports the roof load of the eaves tip.
[0024]
The eave corner block 20 includes a main member 21 having the same cross-sectional dimension as the corner block 2, and additional members 22 attached to both side surfaces of the main member 21, respectively. The main material 21 and the additive 22 are firmly joined by bonding or screwing. As shown in the cross-sectional view of FIG. 4, the cross-sectional shape of the main material 21 and the additive 22 is such that the top end and the lower end each form a mountain-shaped inclined surface.
[0025]
The length of the main material 21 is preliminarily processed based on the protruding dimension from the protruding corner A to the eaves line Z, and the tips of the main material 21 and the auxiliary material 22 are aligned so as to match the eaves line Z. ing. The other end of the additional material 22 is extended toward the building body side from the main material 21, and this extended portion is overlapped on both side surfaces of the corner block 2 and fixed to the corner block 2 with screws or nails (not shown). These nails and screws can be hammered in the area of the extension of the attachment 22. Further, a flat band-shaped reinforcing metal member 23 is superimposed on the top end of the main member 21 and the top end of the corner block 2 and is screwed to the main member 21 and the corner block 2 to reinforce the joint between the two.
[0026]
<Tanibe>
5 and 6 show the detailed structure of the valley. The valley 8 according to the illustrated embodiment is a single continuous member that is installed between the ridge bundle 6 a and the corner B. The same joint metal 9 as that at the corner is used also at the joint between the valley 8 and the ridge bundle 6a or the eaves girder 1. Also at the valley, since the lower end of the valley 8 is formed up to the length of the eaves girder 1, it is not necessary to adjust the eaves dimension of the eaves when the valley 8 is erected.
[0027]
Then, after the valley 8 is fixed on the eaves girder 1, the eaves valley 80 is added to the lower end of the valley 8. The eaves valley 80 also includes a main material 81 having the same cross-sectional dimension as the valley 2, similarly to the eaves corner wood 20, and additional materials 82 attached to both side surfaces of the main material 81, respectively. As shown in the cross-sectional view attached to FIG. 6, the cross-sectional shapes of the main material 81 and the additive 82 are such that the top end and the lower end each form an inclined surface having an inverted mountain shape.
[0028]
The length of the main material 81 is preliminarily processed based on the outgoing dimension from the corner B to the eaves line Z, and the ends of the main material 81 and the auxiliary material 82 are aligned so as to match the eaves line Z. ing. The other end of the additional material 82 extends toward the building body side from the main material 81, and this extended portion is overlapped on both side surfaces of the valley 8 and fixed with screws or nails. Further, a flat band-shaped reinforcing metal member 23 is superimposed on the top of the main material 81 and the top of the valley 8, and this is screwed to the main material 81 and the valley 8 to reinforce the joint between them.
[0029]
As described above, in the present invention, the outgoing dimensions of the eaves at the corners and the valleys are adjusted by the eaves corners 20 and the eaves valleys 80 that are added to the corners 2 and the valleys 8. These eaves corners 20 and eaves valleys 80 are shorter and lighter than the corners 2 and the valleys 8, so that the positioning and fixing work can be performed easily and quickly. Further, as soon as the corner block 2 and the valley 8 are mounted on the eaves girder 1, the process of laying the rafters 3 and the hut reinforcements can be immediately proceeded, so that unnecessary waiting time at the site can be eliminated. As a result, construction efficiency is improved.
[0030]
【The invention's effect】
In the present invention, after the corners and valleys are formed to a length that does not protrude from the eaves and fixed on the eaves girder, a structure is employed in which the eaves corners and eaves valleys are added to the lower end thereof. This eliminates the need for positioning long corners and valleys, making it easier to adjust the eaves dimension. Thereby, the construction efficiency on site is improved.
[Brief description of the drawings]
FIG. 1 is a plan view of a deformed roof according to an embodiment of the present invention.
FIG. 2 is a perspective view schematically showing a cabin frame structure with a deformed roof shown in FIG.
FIG. 3 is a side view showing a structure of a corner in the modified roof of FIG. 1;
FIG. 4 is also a top view showing the structure of the corner.
FIG. 5 is a side view showing a structure of a valley in the modified roof in FIG. 1;
FIG. 6 is a top view showing the structure of the valley.
FIG. 7 is a perspective view showing a structure of a corner in a conventional roof frame.
[Explanation of symbols]
1 eaves girder 2 corner wood 20 eaves corner 21 main material 22 additional material 23 reinforcing hardware 6 bundle material 7 purlin 8 valley 80 eaves lower tree 81 main material 82 additional material

Claims (5)

A corner block is installed diagonally between the eaves girder or similar horizontal member and the purlins, ridges, shed bundles, columns or similar structural materials on the building body side, and the lower end of this corner is the eaves girder. Or, while being connected to the horizontal member,
An eaves corner structure in which an eaves corner supporting a roof load of the eaves portion is connected to a lower end portion of the corners in an extending direction of the corner eaves. An eaves corner is composed of a main material having the same cross-sectional dimensions as the corner wood, and additional materials attached to both sides of the main material, and each additional material is extended toward the building body side from the main material. , While this extension part is fixed to the corner block with screws or nails in a state of overlapping on each side of the corner block,
2. The eaves structure at a corner according to claim 1, wherein the top of the main material and the top of the corner are connected via a flat band-shaped reinforcing metal. A valley is installed diagonally between the eaves girder or similar horizontal member and the ridge, ridge, shed, pillar or similar structural material on the building body side, and the lower end of the valley is attached to the eave. Connected to the girder or the horizontal member,
An eaves valley structure in which an eaves valley supporting a roof load of an eaves portion is connected to a lower end portion of the valley in an extending direction of the valley. An eaves valley consists of a main material having the same cross-sectional dimensions as the valley, and additional materials attached to both sides of the main material. Then, with this extension part fixed to the valley with screws or nails in a state of overlapping on each side of the valley,
The eaves structure of a valley part according to claim 1, wherein the top end of the main material and the top end of the valley are connected via a flat band-shaped reinforcing hardware. A corner or valley is installed diagonally between an eaves girder facing the eaves or a similar horizontal material and a ridge, ridge, shed, pillar or similar structural material provided on the building body side. After connecting the lower end of the corner block or valley to the eave girder or the cross member,
A corner / valley eaves construction method, wherein an eaves corner or eaves valley for supporting a roof load of an eaves part is connected to a lower end of the corners or valley in an extending direction of the corners or valley.

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