JP2004044082A - Extension working method of roof truss - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extension working method for a roof truss, enabling labor-saving for construction, and reduction in cost and debris in extension work for building an enlargement to the whole surface of a cross beam surface of an existing dwelling house of a hip roof type. <P>SOLUTION: One end part 101 of a new hip rafter beam 100 is installed on the extension of an existing hip rafter beam 1 using a hip rafter beam extension fitting 102 having a corner top main house receiving connecting part 103 and a hip rafter connecting part 105, thereby extending the hip rafter beam from the end of the existing large building to the end of a new large building. One end part 201 of a new ascending beam 200 is installed on the extension of an existing ascending beam 8 using an ascending extension fitting 202 having a flat part 206, a top main house receiving connecting part 205 and an ascending beam connecting part 207. A new ascending beam strut 203 is vertically erected between the new ascending beam 200 and an enlargement side existing ascending beam 11 using the beam strut 203 having an ascending beam strut connector 204 mounted on the existing ascending beam 11 on the enlargement part side at the lower end and a new ascending beam connecting part 210 connected to the new beam 200 at the upper end. Thus, the asending beam of the middle part of an existing large building is extended toward the end of a new large building. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an extension work at the time of extension of a house with a built-in ridge, and relates to an extension construction method of a hut group for constructing a hut group of an extension part without completely dismantling a hut group of an existing house.
[0002]
[Prior art]
When an extension is added to the entire girder surface of an existing house with a built-in ridge, the height of the ridge or the direction of the ridge changes after the extension, and the entire hut frame structure often changes ((Fig. 1)).
[0003]
In such a case, in accordance with the new hut group, another member is added to the existing members of the existing hut group, or the existing members are removed and replaced with new members, and the existing hut group is replaced with new members. Need to be changed. For this reason, the existing hut group was conventionally completely dismantled and reconstructed into a new hut group.
[0004]
[Problems to be solved by the invention]
However, the existing hut group was completely dismantled and rebuilt into a new hut group, which required a lot of time and labor, not only lengthening the construction period but also causing poor workability. .
[0005]
Also, when each member of the hut assembly is made of metal such as steel, it is possible to add another member to the existing member by welding. In consideration of living as usual, there was a problem that it was difficult to ensure sufficient safety.
[0006]
Furthermore, there is a problem that a large amount of industrial waste is generated by completely dismantling the existing hut group, and it is costly to transport and dispose of the waste.
[0007]
Further, as described above, in many cases, it is desirable that the extension work be completed in a short period of time because the customer lives in the existing house even during the extension work. Accordingly, there has been a problem that a period in which the inconvenience is imposed on the customer is lengthened and the burden on the customer is increased.
[0008]
The present invention has been made in view of the above-mentioned problems, and is a shack that aims to save labor, reduce costs, and reduce waste in an extension work when expanding the entire girder surface of an existing house with a built-in ridge. The purpose is to provide a set of extension construction methods.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a method for constructing a truss group according to claim 1 of the present invention, and a method for constructing a truss group in an extension construction when extending over the entire girder surface of an existing house with a built-in ridge. A corner-top purlin receiving connection installed on a corner-top purlin receiver provided at an upper end of a vertical member below an end of an existing large building, and an existing corner beam rising from one edge of the corner-top purlin receiving connection. An end of a new corner beam connected to the corner beam connection portion using a corner beam extension fitting having a corner beam connection portion rising at an angle substantially equal to the angle, and the corner top purlin receiving connection portion being connected to the corner top purlin support. Is fixed, and one end of the new corner beam is installed on the extension of the existing corner beam, so that the corner beam is extended from the end of the existing large building toward the end of the new large building. A flat part installed on the top of a vertical member below the middle part of the building, A top purlin receiving connection installed on the top purlin receiver installed at the upper end of the member, and a climbing beam rising from a central portion of one side of the purlin receiving connection at a rising angle substantially equal to the rising angle of the existing climbing beam. Using a climbing beam extension fitting having a connection portion, connecting one end of the new climbing beam to the climbing beam connection portion, fixing the flat portion to the top of the vertical member, and connecting the top purlin receiving connection portion to the vertical member. By fixing to the top purlin support, one end of the new climbing beam is installed on the extension of the existing climbing beam, and the climbing beam bundle fitting and the upper end are installed at the lower end of the existing climbing beam on the extension side. Using a new climbing beam bundle having a new climbing beam connection portion connected to the new climbing beam, fixing the climbing beam bundle connection fitting to the existing climbing beam, and connecting the new climbing beam bundle connection portion to the new climbing beam connection portion Connect to the climbing beam of the new climb By vertically arranging the bundle between the new climbing beam and the existing climbing beam on the extension side, the climbing beam in the middle of the existing large building is extended toward the end of the new large building. It is assumed that.
[0010]
The method for constructing an extension of a hut group according to claim 2 is the method for constructing an extension of a hut assembly according to claim 1, wherein the extension is installed on a purlin receiving bracket installed on an existing corner beam located at a boundary between an existing house and an extension. A purlin extension fitting having a purlin receiving connection part to be made and a purlin connection part making an angle of approximately 90 ° with the purlin receiving connection part, fixing the purlin receiving connection part to the purlin receiving fitting, and forming a new purlin of the extension part. By installing on the extension of the existing main building installed in the main building receiving bracket, the installation direction of the main building on the extension unit side of the existing house is changed by approximately 90 °, and the new main building of the expansion unit is abbreviated as the existing main building. It is characterized by being arranged on the same surface.
[0011]
The method for constructing an extension of a truss set according to claim 3 is an extension work on a girder side of a house having a truss eaves part extending diagonally downward from one end of a truss of the hut, A method of installing an eaves beam to add a new eaves beam along the edge of the existing house, cutting off the eaves side of the truss eaves on the side of the girder to which the eaves beam is added, and adjoining the eaves end of the adjacent truss In this section, the eaves beam connection brackets are arranged facing each other, and the eaves beam mounting brackets are arranged respectively, and both ends of the eaves beam are connected to these opposing eaves beam connection parts. It is.
[0012]
The method for constructing an extension of a truss set according to claim 4 is an extension of a truss extension of a truss eaves part extending diagonally downward from one end of a truss of the truss set, and the eaves on the side of the girder of an existing house. A method of installing an eaves beam to add a new eaves beam along the truss eaves part of the side of the girder to add the eaves beam of the existing house, at the end of the adjacent truss eaves side, An eaves beam connecting fitting having a web straddling portion that straddles the web of the truss and an eaves beam connecting portion projecting in a direction perpendicular to the web straddling portion is disposed with the eaves beam connecting portions facing each other. The invention is characterized in that both ends of the eaves beam are connected to the facing eaves beam connection portions.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
First, as shown in FIG. 1, the existing corner beam 1 is extended to the end of the new large building. As shown in FIG. 2, the extension of the existing corner beam 1 is performed by adding a new corner beam 100 to a corner top purlin support 4 provided at the upper end 3 of the existing ridge bundle 2 which is a vertical member below the end of the existing large building. By using a corner beam extension metal fitting 102 to connect one end 101 of the end piece.
[0014]
As shown in FIG. 3, the existing corner beam 1 is formed by fastening two C-shaped steel members 5 with bolts, opening the openings to face each other, and securing a gap at a desired interval. It is installed at the upper end 3 of the existing bundle 2 at a rising angle θ determined by being provided so as to be taken out in the direction of 45 ° from the end of the main building toward the exit corner of the existing eaves (see FIG. 1). It is connected to the beam connection fitting 6.
[0015]
As shown in FIG. 3, the existing ridge bundle 2 is formed by fastening two C-shaped steel members 5 with bolts so that the openings face outward, similarly to the existing corner beams 1. A corner top purlin receiver 4 and a beam connection fitting 6 are provided at the lower end, and a climbing beam bundle connection fitting is provided at the lower end.
[0016]
As shown in FIG. 3, the corner top purlin receiver 4 is a metal fitting having a substantially L-shaped cross section, and a through hole 7 a for fixing the purlin to the corner top purlin receiver 4 is formed in the receiving section 7 for receiving the purlin. Have been.
[0017]
As shown in FIG. 4, the new corner beam 100 has the same configuration as the existing corner beam 1, and has a pair of through holes 100 a at both ends.
[0018]
As shown in FIG. 4, the corner beam extension metal fitting 102 is bent from one end edge 104 of the corner top purlin receiving connection portion 103 in which the through-hole 103 a is formed, and is bent from the one edge 104 of the existing corner beam 1. It rises at a rising angle substantially equal to the rising angle θ (hereinafter, “rising angle θ”), and has a corner beam connecting portion 105 having a through hole 105a formed at an end.
[0019]
As shown in FIG. 3 or FIG. 5, the height of the corner top purlin receiving connection part 103 is substantially equal to the height of the receiving part 7 of the corner top purlin receiver 4, and the length thereof is the receiving part of the corner top purlin receiving 4. 7, when the corner-top purlin receiving connection 103 is applied to the receiving section 7 of the corner-top purlin receiving 4, the one edge 104 of the corner-top purlin receiving connection 103 becomes longer than the long axis L of the existing corner beam 1. (See FIG. 6). The through-hole 103a is formed at a position substantially coincident with the through-hole 7a of the receiving portion 7 when the corner-top purlin receiving connection portion 103 is applied to the receiving portion 7 of the corner-top purlin receiving portion 4.
[0020]
The length of the corner beam connecting portion 105 is not particularly limited as shown in FIG. 4, but the thickness thereof is set to be substantially equal to the gap between the two C-shaped steels 5 of the new corner beam 100. I have. The two through-holes 105a are formed at positions where a line connecting their centers forms a rising angle θ with respect to the horizontal direction, and the interval is substantially equal to the pair of through-holes 100a of the new corner beam 100. . In plan view, as shown in FIG. 5, an angle of approximately 135 ° is formed with the corner top purlin receiving connection portion 103. Thereby, as shown in FIG. 6, when the corner top purlin receiving connection portion 103 is fixed to the upper end portion 3 of the existing ridge bundle 2, an axis of 45 ° from the center of the existing ridge bundle 2 with respect to the direction of the existing large ridge. The corner beam connecting portion 105 is located on the line.
[0021]
Hereinafter, the connection of one end 101 of the new corner beam 100 to the upper end 3 of the existing ridge bundle 2 will be described. First, as shown in FIG. 4, the corner beam connecting portion 105 of the corner beam extension metal fitting 102 is inserted between the two C-beams 5 constituting the new corner beam 100, and one end 101 of the new corner beam 100 is inserted. By fastening the through-hole 100a and the through-hole 105a of the corner beam connecting portion 105 with the fastener 50 composed of a bolt and nut, one end 101 of the new corner beam 100 is connected to the corner beam extension fitting 102.
[0022]
Then, as shown in FIG. 5, the corner top purlin receiving connection part 103 of the corner beam extension metal fitting 102 is applied to the receiving part 7 of the corner top purlin receiving part 4 on the extension part side, and the through hole 7a of the receiving part 7 and the corner top purlin are fitted. By fastening the through hole 103a of the receiving connection portion 103 with the fastener 50, the corner beam extension metal fitting 102 is fixed to the corner top purlin receiver 4 on the extension portion side.
[0023]
As described above, as shown in FIGS. 2 and 3, one end 101 of the new corner beam 100 is connected to the upper end 3 of the existing ridge bundle 2, and the new corner beam 100 is installed on the extension of the existing corner beam 1. That is, as shown in FIG. 1, the existing corner beam 1 is extended toward the end of the new large building on the extension side.
[0024]
In the present embodiment, one end 101 of the new corner beam 100 and the corner beam connection portion 105 of the corner beam extension fitting 102 are connected by bolting at the construction site, but the invention is not limited to this. At the factory, one end 101 of the new corner beam 100 and the corner beam connecting portion 105 of the corner beam extension fitting 102 may be connected by welding. Thereby, the work on the construction site can be reduced.
[0025]
Further, in the present embodiment, the existing hut group is a truss hut group. However, as shown in FIG. 7, the same applies to a case where the existing hut group is a Japanese hut group. One end 101 of the new corner beam 100 is connected to the upper end 3 of the existing ridge bundle 2 by using the same.
[0026]
Second, as shown in FIG. 1, an existing climbing beam (truss) 8 installed in the middle of the existing large building is extended toward the end of the new large building on the side of the extension. As shown in FIG. 8, the extension of the existing climbing beam (truss) 8 is such that one end of a new climbing beam 200 is attached to the upper end 10 of the existing climbing beam (truss) bundle 9 which is a vertical member below the middle part of the existing building. The section 201 is fixed using the climbing beam extension fitting 202, and a new climbing beam bundle 203 is provided between the existing climbing beam (truss) 11 and the new climbing beam 200 on the extension section side by using the climbing beam bundle connection fitting 204. Perform by installing.
[0027]
As shown in FIG. 8, the existing climbing beam (truss) 8 and the existing climbing beam (truss) 11 on the side of the extension section are fastened by fastening two C-shaped steel members 5 with bolts, and the openings face outward. And a gap at a desired interval, which is supported by the existing ascending beam (truss) true bundle 9 and the existing ascending beam bundle 12 so as to descend diagonally downward from the existing large building toward the end of the existing large beam. ing.
[0028]
At the upper end 10 of the existing ascending beam (truss) bundle 9, a top purlin support 13 having a substantially L-shaped cross section is provided, and the upper surface of the ascending beam (truss) 8 and the existing ascending beam (truss) 11 on the extension part side. Are provided with purlin receivers 14 each having a substantially L-shaped cross section. Further, through holes 15a, 16a for fixing the purlin are formed in the receiving portions 15, 16 for receiving the purlin (see FIG. 15 or FIG. 17).
[0029]
As shown in FIG. 8, the new climbing beam 200 has the same configuration as the existing climbing beam (truss) 8 and the existing climbing beam (truss) 11 on the extension part side, and the climbing beam extension fitting is provided at a predetermined interval. A through-hole 200a is formed to connect to the 202 and the new climbing beam bundle 203 (see FIG. 17).
[0030]
As shown in FIG. 9, the climbing beam extension fitting 202 has a substantially rectangular top purlin receiving connection portion 205 having through holes 205a formed at both ends, and a substantially rectangular shape having through holes 206a formed at both ends. A rising angle (hereinafter referred to as “rising”) substantially equal to an angle α formed between the girder shown in FIG. 8 and the existing climbing beam (truss) 8 with respect to the horizontal direction from the center of the back side of the flat part 206 and the top purlin receiving connection part 205. At the angle α ”), the climbing beam connecting portion 207 having two through holes 8a formed at the end facing the top purlin receiving connection portion 205, the top purlin receiving connecting portion 205, and the flat portion 206. And a reinforcing part 208 connecting the two.
[0031]
As shown in FIG. 10 or FIG. 11, the length of the top purlin receiving connection part 205 is substantially equal to the length of the receiving part 15 of the top purlin receiver 13, and the through hole 205 a is formed by connecting the top purlin receiving connection part 205 to the top purlin. It is drilled at a position substantially matching the through hole 15 a of the top purlin receiver 13 when applied to the receiver 15 of the receiver 13.
[0032]
The flat portion 206 has a length substantially equal to the length of the top purlin receiving connection portion 205, and the through-hole 206 a has an existing climbing beam when the top purlin receiving connection portion 205 is applied to the receiving portion 15 of the top purlin receiver 13. The truss is drilled at a position substantially coincident with a through hole 17a drilled at the top 17 of the true bundle 9.
[0033]
Although the length of the climbing beam connecting portion 207 is not particularly limited, the thickness thereof is substantially equal to the gap between the two C-shaped steel members 5 of the new climbing beam 200, and the two through holes 8a are formed by connecting the centers of the two through holes 8a. Form a rising angle α with respect to the horizontal direction, and are formed at positions where the interval is substantially equal to the through hole 200 a of the new climbing beam 200. Thus, when the climbing beam extension fitting 202 is fixed to the existing climbing beam (truss) bundle 9, the climbing beam connecting portion 207 is located on the extension of the existing climbing beam (truss) 8.
[0034]
The reinforcing portion 208 has one end fixed to the edge of the top purlin receiving connection portion 205 and the lower end fixed to the edge of the flat portion 206, respectively. The top purlin receiving connection portion 205 and the flat portion 206 are connected while securing a gap 209 therebetween.
[0035]
As shown in FIG. 12, the new climbing beam bundle 203 has the same configuration as the existing climbing beam bundle 12, and has a new climbing beam connecting portion 210 having a through hole 210a formed at the upper end. The portion is provided with a climbing beam bundle connection fitting 204. The two through-holes 210a of the new climbing beam connecting portion 210 are positioned such that the line connecting the centers forms a rising angle α with respect to the horizontal direction, and the interval is substantially equal to the through-hole 200a of the new climbing beam 200. (See FIG. 17).
[0036]
As shown in FIG. 12, the climbing beam bundle connection fitting 204 has a substantially rectangular installation part 211, and a predetermined rising angle on the upper surface of the installation part 211 substantially parallel to the longitudinal direction of the installation part 211 and at the center in the width direction. an ascending beam bundle connecting portion 212 installed at β, and protruding from the lower surface of the installing portion 211 at substantially 90 ° to a central portion in a direction substantially parallel to the longitudinal direction of the installing portion 211 and in the width direction. An existing climbing beam connecting portion 213 having a through hole 213a formed at an end opposite to the above, and a purlin support having approximately 90 ° rising from one end of the installation portion 211 and having a through hole 214a formed at both ends thereof. It has a connecting portion 214 and a reinforcing portion 215 that rises at approximately 90 ° from both side edges of the installation portion 211 and has one end to which the side edge of the purlin receiving connection portion 214 is fixed.
[0037]
As shown in FIG. 13 or FIG. 14, the installation portion 211 is installed on the upper surface of the existing climbing beam (truss) 11 on the extension portion side, and has a width substantially equal to the width of the receiving portion 16 of the purlin support 14. The length is shorter than the installation interval of the purlin receiver 14. Further, an unevenness adjusting portion 216 having a thickness substantially equal to the thickness of the purlin support 14 is provided on the lower surface of the end portion facing the purlin receiving connection portion 214.
[0038]
The climbing beam bundle connection portion 212 is for connecting the lower end of the new climbing beam bundle 203 to the climbing beam bundle connection fitting 204, and is provided at the center of one side surface thereof to reinforce the climbing beam bundle connection portion 212. A rib 217 is provided. The length of the ascending beam bundle connection portion 212 in the longitudinal direction is determined by the fact that when the ascending beam bundle connection fitting 204 is installed on the existing ascending beam (truss) 11 on the extension portion side, the new ascending beam bundle 203 becomes the true position of the existing ascending beam bundle 12. The upper position. In addition, the rising beam β is connected to the existing climbing beam (truss) on the extension portion side by setting the rising angle β to 90 ° and the angle α formed by the girder 11 and the existing climbing beam (truss) 8 shown in FIG. ) When installed at 11, the ascending beam bundle connection portion 212 is erected vertically on the existing ascending beam (truss) 11 on the extension portion side. As a result, by simply fixing the climbing beam bundle connection fitting 204 to the existing climbing beam (truss) 11 on the extension portion side, the new new climbing beam bundle 203 connected to the climbing beam bundle connection portion 212 becomes the existing climbing beam bundle. 12, it will be erected vertically.
[0039]
In the present embodiment, the connection between the new climbing beam bundle 203 and the climbing beam bundle connection portion 212 is performed by welding, but the present invention is not limited to this. Alternatively, a through-hole may be formed at the upper end of the section and the ascending beam bundle connection portion 212, and the new ascending beam bundle 203 may be connected to the ascending beam bundle connection portion 212 by bolting.
[0040]
The existing climbing beam connection portion 213 is for installing the climbing beam bundle connection fitting 204 on the existing climbing beam (truss) 11 on the extension portion side, and has a thickness of the existing climbing beam (truss) 11 on the extension portion side. Is substantially equal to the gap between the two C-shaped steels 5, and the length thereof is longer than the length of the web of the C-shaped steel 5.
[0041]
The purlin receiving connection portion 214 is fixed to the receiving portion 16 of the purlin receiving portion 14 and fixes the climbing beam bundle connection fitting 204 to the existing climbing beam (truss) 11 on the extension portion side. The width of the receiving portion 16 is substantially equal to the height of the receiving portion 16 of the purlin receiver 14. The through hole 214a is formed at a position substantially coincident with the through hole 213a of the receiving portion 16 of the purlin receiver 14 when the installation portion 211 is placed on the upper surface of the existing climbing beam (truss) 11 on the extension portion side. .
[0042]
The reinforcing portion 215 is for reinforcing the climbing beam bundle connection fitting 204, and is a part of an edge in contact with the lower corner so that water does not collect in the lower corner of the purlin receiving connection 214 of the installation portion 211. Is cut out to provide a drainage portion 218.
[0043]
Hereinafter, connection of the end 201 of the new climbing beam 200 to the upper end 10 of the existing bundle 9 of truss beams will be described. First, as shown in FIG. 15, the climbing beam connecting portion 207 of the climbing beam extension metal fitting 202 is inserted between two C-beams 5 constituting the new climbing beam 200, and one end 201 of the new climbing beam 200 is connected to the C beam 5. By fastening the through hole 200a and the through hole 8a of the climbing beam connecting portion 207 of the climbing beam extension fitting 202 with the fastener 50 composed of a bolt and a nut, one end 201 of the new climbing beam 200 is climbed to extend the beam. Connect to fitting 202.
[0044]
Then, the top purlin receiver 13 on the extension part side is fitted into the gap 209 of the climbing beam extension fitting 202, and the top purlin receiving connection part 205 of the climbing beam extension fitting 202 is applied to the receiving part 15 of the top purlin receiver 13 on the extension part side. Then, the through hole 15a of the receiving portion 15 and the through hole 205a of the top purlin receiving connecting portion 205 are fastened with the fastener 50, and the flat portion 206 of the climbing beam extension metal fitting 202 is attached to the top 17 of the existing climbing beam (truss) true bundle 9. Is mounted, and the through hole 17a of the top portion 17 and the through hole 206a of the flat portion 206 are fastened by the fastener 50, so that the climbing beam extension metal fitting 202 is attached to the top purlin receiver 13 on the extension portion side and the existing climbing beam (truss). ) Fix to the top 17 of the bundle 9. Thereby, as shown in FIGS. 10 and 11, one end 201 of the new climbing beam 200 is connected to the upper end 10 of the existing climbing beam (truss) true bundle 9, and extends on the extension of the existing climbing beam (truss) 8. Will be located.
[0045]
Next, the installation of the new climbing beam bundle 203 on the existing climbing beam (truss) 11 on the extension side will be described. First, as shown in FIG. 16, the existing climbing beam connection portion 213 of the climbing beam bundle connection fitting 204 is inserted between the two C-beams 5 of the existing climbing beam (truss) 11 on the extension portion side, and the climbing beam bundle is inserted. The installation portion 211 of the connection fitting 204 is placed on the upper surface of the existing climbing beam (truss) 11 on the extension portion side, and the existing climbing beam connection portion 213 projecting from the lower surface of the existing climbing beam (truss) 11 on the extension portion side. Two bent plates 219 each having a through hole 219a formed on one side thereof are applied to both sides of the portion, and the through hole 219a of each plate 219 and the through hole 213a of the existing climbing beam connecting portion 213 are connected with the fastener 50. By fastening, the climbing beam bundle connection fitting 204 is installed on the upper surface of the existing climbing beam (truss) 11 on the extension part side.
[0046]
As shown in FIG. 17, the purlin receiving connection portion 214 of the climbing beam bundle connection fitting 204 is applied to the receiving portion 16 of the purlin receiver 14 near the existing climbing beam bundle 12, and the through hole 214 a of the purlin receiving connection portion 214 is received. By fixing the purlin receiving connection part 214 to the purlin receiving part 14 by fastening the through hole 16a of the part 16 with the fastener 50, the climbing beam bundle connection fitting 204 is connected to the upper surface of the existing climbing beam (truss) 11 on the extension part side. Fixed to. Thus, as shown in FIGS. 13 and 14, the climbing beam bundle connection fitting 204 is fixed to the existing climbing beam (truss) 11 on the extension portion side.
[0047]
Then, as shown in FIG. 17, the new climbing beam connecting portion 210 is inserted between the two C-beams 5 of the new climbing beam 200, and the penetration hole 200 a of the new climbing beam 200 and the penetration of the new climbing beam connecting portion 210 are formed. The new climbing beam connecting portion 210 is connected to the new climbing beam 200 by fastening the hole 210a with a fastener (not shown). Accordingly, as shown in FIG. 13, the new climbing beam bundle 203 is erected vertically right above the existing climbing beam bundle 12.
[0048]
As described above, as shown in FIG. 8, the new climbing beam bundle 203 is vertically installed between the existing climbing beam (truss) 11 and the new climbing beam 200 on the extension side to support the new climbing beam 200. A new climbing beam 200 is installed on the extension of the existing climbing beam (truss) 8 at a rising angle α, that is, as shown in FIG. It has been extended toward the end.
[0049]
As shown in FIG. 18, when the new climbing beam bundle 203 is provided so as to be shifted from directly above the existing climbing beam bundle 12 for the sake of design, a purlin receiving connection portion 214 is provided at the other end of the installation portion 211. By using the provided climbing beam bundle connection fitting 220 and fixing the purlin receiving connection portion 214 of the climbing beam bundle connection fitting 220 to the purlin support 14, the new climbing beam bundle 203 can be connected to the existing climbing beam (truss) on the extension unit side. ) Set at 11.
[0050]
Further, in the present embodiment, the new climbing beam bundle 203 is one C-beam 5, but it is also possible to use two C-beams 5 like the existing climbing beam bundle 12. In this case, as shown in FIG. 19, the climbing beam bundle connection fitting 230 has a length of the installation portion 211 substantially equal to an installation interval of the purlin receiver 14, and a purlin receiving connection portion 214 is provided at both ends of the installation portion 211. I have.
[0051]
As shown in FIG. 20, the connection between the climbing beam bundle connection fitting 230 and the existing climbing beam (truss) 11 on the extension part side is performed by fitting the climbing beam bundle connection fitting 230 between the two purlin supports 14, This is performed by fastening the receiving part 16 of each purlin receiver 14 and each purlin receiving connection part 214 with the fastener 50. The connection between the new climbing beam bundle 203 and the climbing beam bundle connection fitting 230 is performed by forming through holes in the lower end portion of the new climbing beam bundle 203 and the upper end portion of the climbing beam bundle connection portion 212, respectively. This is performed by fastening the hole with the fastener 50.
[0052]
Furthermore, in the embodiment of the present invention, the hut group of the existing house is a truss group. However, as shown in FIG. 21, the same applies when the existing hut group is a Japanese hut group. One end 201 of the new climbing beam 200 is connected to the upper end 10 of the existing climbing beam (truss) true bundle 9 by using the beam extension metal fitting 5, and the new climbing beam bundle 203 is formed by using the climbing beam bundle fitting 204. It is erected vertically between the existing climbing beam (truss) 11 and the new climbing beam 200 on the extension side.
[0053]
Third, as shown in FIG. 8, the new ridge bundle 250 is erected vertically on the existing climbing beam (truss) 11 on the extension part side. When the new ridge bundle 250 is erected, the lower end portion of the new ridge bundle 250 is fixed to the purlin support 14 installed on the existing climbing beam (truss) 11 on the extension part side using the climbing beam bundle connection fitting 204. It is done by doing.
[0054]
The new ridge bundle 250 has the same configuration as the existing ridge bundle 2 shown in FIG. 3, and is formed by fastening two C-shaped steel members 5 with bolts so that the openings face outward. The top is provided with a top purlin receiver 13 and a beam connection fitting 251, and the lower end is provided with a climbing beam bundle connection fitting 204.
[0055]
The other end of the new corner beam 100 and the other end of the new climbing beam 200 are connected to the beam connection fitting 251 of the new bundle 250. This connection is performed in the same procedure as described above, that is, by inserting the corner beam connecting portion of the beam connecting bracket 251 between the two C-beams 5 constituting the new corner beam 100, and connecting the other corner beams of the new corner beam 100. The other end of the new corner beam 100 is connected to the beam connection fitting 251 by bolting the end and the beam connection fitting 251, and a beam is provided between the two C-shaped steel members 5 constituting the new climbing beam 200. This is performed by inserting the climbing beam connection portion of the connection fitting 251 and bolting the new climbing beam 200 and the beam connection fitting 251 (see FIG. 8).
[0056]
As described above, as shown in FIG. 1, the new corner beam 100 is installed between the existing ridge bundle 11 and the new ridge bundle 250, and the new climbing beam 200 and the existing climbing beam (truss) true bundle 9 and the new The existing corner beam 10 and the existing climbing beam (truss) 8 are provided between the ridge bundle 250 and the existing corner beams 10 and the existing climbing beams (trusses) 8 are respectively extended to the extension part side corresponding to the hut group after the extension.
[0057]
Fourth, as shown in FIG. 22, the installation direction of the main building on the side of the extension of the existing house is changed by approximately 90 °, and the new main building of the extension is arranged on substantially the same plane as the existing main building of the existing house. First, the new eaves main building 400 of the extension unit is arranged on substantially the same plane as the existing eaves main building 18 of the existing house. Specifically, as shown in FIG. 23, an eaves prefabricated house installed at the tip of an existing eaves beam 20 (not shown) provided at the eaves of an existing corner beam 19 located at the boundary between the existing house and the extension. The new eaves purlin 400 is installed on the extension of the existing eaves purlin 18 by fixing the eaves purlin extension metal fitting 401 to the receiving metal fitting 21 and connecting the end 402 of the new eaves green purlin 400 to the eaves main purse receiving metal fitting 401. In addition, the existing corner beam 19 and the existing eave beam 20 shown in each of the embodiments have the same configuration as the existing corner beam 1 shown in FIG. 3, and are obtained by fastening two C-shaped steel members by bolting. Thus, it is provided so as to be taken out at an angle of 45 ° from the end of the existing large building toward the protruding corner of the eaves (see FIG. 22).
[0058]
As shown in FIG. 24, the existing eaves purlin 18 is a long wooden timber having a tip formed in a predetermined shape, and the end of the existing eaves purlin 18 is attached to an eaves purlin receiving bracket 21 provided at the end of the existing eaves beam 20 by bolts and nuts. Is installed on the existing eaves beam 20 by being fastened and fixed by the fastener 50 composed of (see FIG. 1).
[0059]
As shown in FIG. 24, the eaves front purse receiving bracket 21 is bent at an angle of about 90 ° at the center, and a chevron plate 22 having through holes 22a formed at both ends, and a bend of the chevron plate 22. A substantially rectangular connection plate 24 having one edge fixed to the inside corner of the portion 23 is provided. To fix the eaves purlin receiving bracket 21 to the existing eaves beam 20, the other end of the connection plate 24 is inserted between the two C-shaped steels of the existing eaves beam 20 from the tip of the existing eaves beam 20, and the other end of the connection plate 24 is inserted. To the tip of the existing eaves beam 20 by bolting.
[0060]
As shown in FIG. 23, the fixing of the existing eaves purlin 18 to the eaves purlin receiving bracket 21 is performed such that the tip of the existing eaves purlin 18 and the tip of the existing eaves purlin 25 on the extension part side substantially match. The end of the existing eaves purlin 18 and the end of the existing eaves purlin 25 on the extension part side are respectively applied to both outer surfaces of the angled plate 22 of the metal fitting 21 and fastened and fixed by the fastener 50. As a result, the existing eaves main house 18 and the existing eaves main house 25 on the extension part side are arranged on the same surface and at an end of the existing eaves front beam 20 at an angle of about 90 °.
[0061]
The new eaves purlin 400 is, like the existing eaves purlin 18 shown in FIG. 24, a long wooden timber having a tip formed in a predetermined shape, and a through hole 402a is formed in the end 402 (see FIG. 24). (See FIG. 5).
[0062]
As shown in FIG. 24, the eaves purlin extension metal fitting 401 is formed by twisting a single plate having through holes 403a and 404a formed at both ends at a central portion so as to form an angle of about 90 °. One of them is an eaves front purlin connection 403, and the other is an eaves front purlin connection 404.
[0063]
As shown in FIG. 25, the eaves purlin extension fitting 401 is fixed to the eaves purlin extension fitting 21 on the side of the extension section side of the chevron plate 22 of the eaves purlin extension fitting 401, as shown in FIG. 25. The side surface of 403 is applied so that the bent portion 23 of the eaves purlin receiving bracket 21 substantially matches the bent portion 405 of the eaves purlin extension bracket 401, and the through hole 22 a of the chevron plate 22 of the eaves purlin receiving bracket 21 and the eaves front purlin. It is performed by fastening the through hole 403 a of the eaves front purlin receiving connection portion 403 of the extension metal fitting 401 with the fastener 50. As a result, as shown in FIG. 25, the eaves purlin connection portion 404 of the eaves purlin extension metal fitting 401 and the side surface of the chevron plate 22 of the eaves purlin receiving metal fitting 21 on the side of the existing eaves purlin 18 are substantially flush with each other. Placed in
[0064]
As shown in FIG. 26, the end 402 of the new eaves purlin 400 is connected to the eaves purlin extension fitting 401 by fixing the eaves purlin extension fitting 401 to the eaves purlin receiving fitting 21, and then connecting the end of the existing eaves purlin 18 with a new one. The end 402 of the new eaves purlin 400 is applied to the eaves purlin connecting portion 404 of the eaves purlin extension metal fitting 401 so that the tip of the eaves purlin 400 substantially matches the end of the eaves purlin 400. This is performed by fastening the through hole 404 a of the eaves purlin connecting portion 404 of the eaves purlin extension fitting 401 with the fastener 50. Accordingly, as shown in FIG. 23, the new eaves purlin 400 is installed on the extension of the existing eaves purlin 18.
[0065]
As described above, as shown in FIG. 22, the installation direction of the main house on the extension part side of the existing house is changed by approximately 90 °, and the new eaves main house 400 is arranged on the same plane as the existing eaves main house 18, that is, the existing eaves main house 18 is arranged. The main building 18 has been extended to the extension part side.
[0066]
Next, as shown in FIG. 22, the new first main building 410 of the extension is placed on the same plane as the existing first main building 26 of the existing house. Specifically, as shown in FIG. 27, the first purlin extension metal fitting 411 is fixed to the first purlin receiving metal fitting 27 installed at the end of the existing eave beam 20 on the side of the existing corner beam 100 (not shown). Then, by connecting the end 412 of the new first purlin 410 to the first purlin extension metal fitting 411, the new first purlin 410 is installed on an extension of the existing first purlin 26. The new first purlin 410 is a long wooden timber and has a through hole 412a at an end 412 (see FIG. 10).
[0067]
The existing first purlin 26 has the same configuration as the existing eaves front purlin 18, and has a fastener 50 attached to a first purlin receiving bracket 27 provided at a predetermined position of the existing eaves front beam 20, as shown in FIG. 27. It is installed one step above the existing eaves 100 by being fastened and fixed (see FIG. 1).
[0068]
As shown in FIG. 28, the first purlin receiving bracket 27 has a substantially trapezoidal flat portion 28 whose oblique side forms an angle of approximately 45 ° with the long side, and an angle of approximately 90 ° from the long side of the flat portion 28. And a first purlin receiving portion 29 having a through hole 29a formed at an end thereof. The first purlin receiving bracket 27 is fixed to the existing eave beam 20 by welding, and the two first purlin receiving members 27 are arranged such that each first purlin receiving portion 29 is aligned with the long axis L of the existing eave beam 20. The first eaves receiving portions 29 are provided on both sides of the existing eaves beam 20 so as to be symmetrical, that is, so that the first purlin receiving portions 29 form an angle of about 90 °.
[0069]
As shown in FIG. 27, the fixing of the existing first purlin 26 to the first purlin receiving fitting 27 is performed by bringing the tip of the existing first purlin 26 into contact with the side of the extension section of the existing eaves beam 20, as shown in FIG. Is placed on the flat portion 28 of the first purlin receiving bracket 27 and fastened to the first purlin receiving section 29 of the first purlin receiving bracket 27 with the fastener 50. As a result, the existing first main building 26 and the existing first main building 30 on the extension side are arranged on the existing eave beam 20 at the same plane and at an angle of about 90 °.
[0070]
As shown in FIG. 29, the first purlin extension fitting 411 has a substantially trapezoidal lid 413 whose oblique side forms an angle of about 45 ° with the long side, and an angle of about 90 ° from the short side of the lid 413. And a first purlin receiving connection member 415 having a first purlin receiving connection portion 414 having a through hole 414a drilled in a lower corner portion, and an oblique side having an angle of approximately 45 ° with respect to the long side. And a first purlin connection portion 417 that rises upward at an angle of approximately 90 ° from a short side of the bottom portion 416 and has a through hole 417a formed in an upper corner portion. It has a first purlin connection member 418, a substantially rectangular attachment part 419, and a substantially rectangular reinforcing part 420 fixed to the edge of the lid 413 facing the oblique side and the edge of the first purlin receiving connection part 414. And the oblique side of the bottom 416 and the It is obtained by forming by fixing the edge and the hypotenuse of the lid portion 413 of the main house connection portion 417.
[0071]
As shown in FIG. 30, the first purlin extension metal fitting 411 is fixed to the first purlin receiving metal fitting 27 on the extension part side by connecting the first purlin extending connecting piece 415 of the first purlin extending metal fitting 411 to the first purlin receiving metal fitting 27. Of the first purlin receiving portion 29 of the first purlin extension fitting 411 on the side of the flat portion 28 of the first purlin receiving portion 29 of the first purlin receiving fitting 27. In addition to applying the receiving connecting portion 414, the back side of the attachment portion 419 of the first purlin extension metal fitting 411 is applied to the side of the extension part of the existing eaves beam 20, and the first purlin extending to the first purlin receiving portion 29 of the first purlin receiving metal fitting 11. This is performed by fastening and fixing the first purlin receiving connection portion 414 of the metal fitting 411 with a fastener.
[0072]
At this time, if the length of the bent portion of the first purlin receiving connection member 415 of the first purlin extension metal fitting 411 is set substantially equal to the upper edge of the first purlin receiving part 29 of the first purlin receiving metal fitting 27, When the first purlin extension metal fitting 411 is fixed to the first purlin receiving metal fitting 27, the first purlin receiving connecting member 415 of the first purlin extending metal fitting 411 is connected to the existing eave beam 20 and the reinforcing portion 420 of the first purlin extending metal fitting 411. Thus, the first purlin extension metal fitting 411 can be stably installed on the first purlin receiving metal fitting 27 (see FIG. 31).
[0073]
Thereby, as shown in FIG. 31, the bent portion 421 of the first purlin connecting member 418 of the first purlin extension metal fitting 411 is connected to the bent portion 31 of the first purlin receiving bracket 27 of the existing first purlin 26. They are arranged on substantially the same plane and on an extension thereof.
[0074]
The end 412 of the new first purlin 410 is connected to the first purlin extension 411 by fixing the first purlin extension 411 to the first purlin receiving bracket 27 and then extending the first purlin as shown in FIG. The end 412 of the new first purlin 410 is placed on the first purlin connection member 418 of the metal fitting 411, and the through hole 412 a of the end 412 of the new first purlin 410 is connected to the first purlin extension metal fitting 411. This is performed by fastening the through hole 417 a of the portion 417 with the fastener 50. Thereby, as shown in FIG. 27, the new first purlin 410 is installed on an extension of the existing first purlin 26.
[0075]
As described above, as shown in FIG. 22, the installation direction of the main building on the extension unit side of the existing house is changed by approximately 90 °, and the new first main building 410 is arranged on the same plane as the existing first main building 26, that is, This means that the existing first main building 26 has been extended to the extension unit side.
[0076]
Next, as shown in FIG. 22, the new second main building 430 of the extension is arranged on the same plane as the existing second main building 32 of the existing house. Specifically, as shown in FIG. 32, the second purlin extension bracket 431 is fixed to the second purlin receiving bracket 33 installed near the connection between the existing corner beam 19 and the existing eaves beam 20, and the second purlin extension 431 is fixed. The new second purlin 430 is installed on the extension of the existing second purlin 32 by connecting the end 432 of the new second purlin 430 to the purlin extension fitting 431. The new second purlin 430 is a long wooden timber, and has a through hole 432a at the end 432 (see FIG. 36).
[0077]
The existing second main house 32 has the same configuration as the existing eaves main house 18 and the existing first main house 26. As shown in FIG. 32, the end of the existing second main house 32 is near the connection between the existing corner beam 19 and the existing eaves beam 101. By being fastened and fixed to the provided second purlin receiving bracket 33 with the fastener 50, it is installed two steps above the existing eaves purlin 18 (see FIG. 1).
[0078]
As shown in FIG. 33, the second purlin receiving bracket 33 forms a substantially hexagonal flat portion 34 having two edges forming substantially 90 ° with each other, and forms approximately 90 ° from the edge of each flat portion 34. It has a second purlin receiving portion 35 that rises upward and has a through hole 35a formed at the upper end. The fixing of the second purlin receiving bracket 33 to the existing corner beam 19 is performed by welding, and the two second purlin receiving portions 35 of the second purlin receiving bracket 33 are mutually symmetrical with respect to the long axis L of the existing corner beam 19. It is provided on the upper surface of the existing corner beam 19 so that
[0079]
As shown in FIG. 32, the fixing of the existing second purlin 32 to the second purlin receiving bracket 33 is performed such that the tip of the existing second purlin 32 substantially matches the tip of the existing second purlin 36 on the extension part side. At the same time, the end of the existing second purlin 32 and the end of the existing second purlin 36 on the extension part side are respectively placed on the flat part 34 of the second purlin receiving bracket 33 and fastened to each second purlin receiving part 35. This is performed by fastening and fixing with the tool 50. Thus, the existing second main house 32 and the existing second main house 36 on the extension side are arranged on the existing corner beam 19 at the same plane and at an angle of about 90 °.
[0080]
As shown in FIG. 34, the second purlin extension 431 has the same configuration as the first purlin extension 411 of the second embodiment, and has a lid 4333 and a second purlin support in which a through hole 434a is formed. A second purlin connection member 435 having a connection portion 434, a second purlin connection member 438 having a bottom portion 436 and a second purlin connection portion 437 having a through hole 437a, an attachment portion 439, and a reinforcing portion 440, and is formed by fixing the oblique side of the bottom 436, the edge of the second purlin connecting portion 34, and the oblique side of the lid 4333 to the surface of the attachment portion 439.
[0081]
The fixing of the second purlin extension metal fitting 431 to the second purlin receiving metal fitting 33 is the same as that of the second embodiment, as shown in FIG. 35, and the second purlin extending metal fitting 431 has the second purlin receiving connecting member 435. Over the second purlin receiving portion 35 of the second purlin receiving bracket 33 from above, and fasten the second purlin receiving connection portion 434 of the second purlin extension bracket 431 to the second purlin receiving portion 35 of the second purlin receiving bracket 33. This is performed by fastening and fixing with a tool (not shown).
[0082]
At this time, the length of the bent portion of the second purlin extension connecting member 435 of the second purlin extension fitting 431 is set to the second value from the attachment portion 439 when the second purlin extension fitting 431 is fixed to the second purlin receiving fitting 33. When the distance to the edge of the purlin receiving portion 35 facing the existing corner beam 19 is substantially equal to that of the second purlin extension 431, when the second purlin extension 431 is fixed to the second purlin receiving bracket 33, the length of the second purlin extension 431 is reduced. Since the second purlin receiving connection member 435 is sandwiched between the attachment part 40 and the reinforcing part 440 of the second purlin extension fitting 431, the second purlin extension fitting 431 is stably installed on the second purlin receiving fitting 33. (See FIG. 36).
[0083]
Thereby, as shown in FIG. 36, the bent portion 441 of the second purlin connecting member 438 of the second purlin extension fitting 431 is substantially flush with the bent portion 37 of the existing second purlin 32, and It is arranged on the extension line.
[0084]
As shown in FIG. 36, the end 432 of the new second purlin 430 is connected to the second purlin extension 431 by fixing the second purlin extension 431 to the second purlin receiving bracket 33 and then extending the second purlin. The end 432 of the new second purlin 430 is placed on the second purlin connecting member 438 of the metal fitting 431, and the through hole 432 a of the end 432 of the new second purlin 430 is connected to the second purlin extension metal fitting 431. This is performed by fastening the through hole 437a of the portion 437 with the fastener 50. Thereby, as shown in FIG. 32, the new second purlin 430 is installed on an extension of the existing second purlin 32.
[0085]
By the above, as shown in FIG. 22, the installation direction of the main building on the extension part side of the existing house is changed by approximately 90 °, and the new second main building 430 is arranged on the same plane as the existing second main building 32, that is, This means that the existing first main building 120 has been extended to the extension unit side.
[0086]
Next, as shown in FIG. 22, the new general purlin 450 of the extension is placed on the same plane as the existing general purlin 38 of the existing house. Specifically, as shown in FIG. 37, the general purlin extension metal fittings 451 are fixed to the general purlin receiving metal fittings 39 installed on the existing corner beams 19, and the end 452 of the new general purlin 450 is fixed to the general purlin extending metal fittings 451. Are connected, the new general purlin 450 is installed on the extension of the existing general purlin 38. The new general purlin 450 is a long wooden timber, and has a through hole 452a at an end 452 (see FIG. 41).
[0087]
The existing general purlin 38 has the same configuration as the existing eaves main purlin 18, the existing first purlin 26, and the existing second purlin 32, and as shown in FIG. It is installed at three or more levels of the existing eaves purlin 18 by being fastened and fixed to the receiving fitting 39 with the fastener 50 (see FIG. 1).
[0088]
As shown in FIG. 38, the general purlin receiving bracket 39 has the same configuration as that of the second purlin receiving bracket 33 of the third embodiment, and has a substantially hexagonal flat portion having two edges forming substantially 90 ° with each other. And a general purlin receiving portion 41 which rises upward at an angle of approximately 90 ° from the edge of each flat portion 40 and has a through hole 41a formed in the upper end portion. The fixing of the general purlin receiving bracket 39 to the existing corner beam 19 is performed by welding, so that the two general purlin receiving portions 41 of the general purlin receiving bracket 39 are mutually symmetrical with respect to the long axis L of the existing corner beam 19. Is provided on the upper surface of the existing corner beam 19.
[0089]
As shown in FIG. 37, similarly to the third embodiment, the fixing of the existing general purlin 38 to the general purlin receiving bracket 39 also includes the end of the existing general purlin 38 and the end of the existing general purlin 42 on the extension unit side. Is mounted on the flat portion 40 of the general purlin receiving fitting 39, and is fixed to each general purlin receiving portion 41 by fastening with a fastener 50. As a result, the existing general purlin 38 and the existing general purlin 42 on the side of the extension part are arranged on the existing corner beam 19 at the same plane and at an angle of about 90 °.
[0090]
As shown in FIG. 39, the general purlin extension fitting 451 has a substantially trapezoidal general purlin receiving connection portion in which the oblique side forms an angle of approximately 45 ° with the long side and a through hole 453a is formed in the upper corner. 453, a substantially rectangular bottom 454, and an upwardly rising side at an angle of about 90 ° from the long side of the bottom 454, and a hypotenuse in which a through hole 455 a is drilled in the upper corner is formed with respect to the long side. It has a general purlin connection member 456 having a substantially trapezoidal general purlin connection part 455 forming an angle of approximately 45 °, and a reinforcing part 457 fixed to an edge of the general purlin receiving connection part 56 facing the oblique side. It is formed by fixing the oblique side of the general purlin receiving connecting portion 453 and the oblique side of the general purlin connecting portion 455 so as to substantially coincide with each other.
[0091]
As shown in FIG. 40, the general purlin extension 451 is fixed to the general purlin receiving bracket 39 by attaching the general purlin extending bracket 451 to the side of the flat part 40 of the general purlin receiving section 41 on the extension side of the general purlin receiving bracket 39. The general purlin receiving connection portion 453 is applied, and the general purlin receiving connection portion 453 of the general purlin extension metal fitting 451 is fastened and fixed to the general purlin receiving portion 41 of the general purlin receiving metal fitting 39 with a fastener (not shown). .
[0092]
At this time, when the length of the upper edge of the general purlin extension fitting 451 of the general purlin extension fitting 451 is fixed to the general purlin extension fitting 451 to the general purlin receiving fitting 39, the oblique side of the general purlin receiving fitting 453 is an existing one. If it is set to a length that abuts on the tip of the general purlin 38, the edge of the general purlin receiving bracket 39, which faces the existing corner beam 19, of the general purlin receiving part 41 comes into contact with the reinforcing portion 457 of the general purlin extension metal fitting 451, Since the general purlin extension fitting 451 has the general purlin receiving connection portion 453 sandwiched between the existing general purlin 38 and the reinforcing part 457 of the general purlin extending metal fitting 451, the general purlin extension fitting 451 is connected to the general purlin receiving fitting 39. It can be installed stably (see FIG. 41).
[0093]
Thereby, as shown in FIG. 41, the bent part 458 of the general purlin connecting member 456 of the general purlin extension metal fitting 451 is substantially flush with the bent part 43 of the general purlin receiving metal fitting 39 toward the existing general purlin 130. And it is arranged on the extension of that.
[0094]
As shown in FIG. 41, the end 452 of the new general purlin 450 is connected to the general purlin extension 451 by fixing the general purlin extension 451 to the general purlin receiving bracket 39, and then connecting the general purlin extension 451 to the general purlin. The end 452 of the new general purlin 450 is placed on the connecting member 456, and the through hole 452 a of the end 452 of the new general purlin 450 and the through hole 455 a of the general purlin connecting part 455 of the general purlin extension 451 are fastened. It is performed by fastening at 50. Thereby, as shown in FIG. 37, a new general purlin 450 is installed on an extension of the existing general purlin 38.
[0095]
As described above, as shown in FIG. 22, the installation direction of the main house on the extension part side of the existing house is changed by approximately 90 °, and the new general house 450 is arranged on the same plane as the existing general house 38, that is, the existing general house 38 is arranged. The main building 38 is extended to the extension part side.
[0096]
Fifth, as shown in FIG. 42, an eave beam is newly added along the eave on the side of the girder of the existing house. In the first embodiment of the installation of the eaves beam, an eaves beam 1001 is installed on both sides of an existing truss 1000 along the eaves on the side of the girder of an existing house, and the eaves beam 1001 is installed on the extension side. This is a method of installing an eaves beam in a case where it is necessary to install an orthogonal beam 1002 in a direction substantially orthogonal to the above. In the procedure shown in FIG. 43, a truss eaves portion 1003 is subjected to a pretreatment, and a web as shown in FIG. The eaves beam connection part 501, the orthogonal beam connection part 502, and the eaves beam installation metal fitting 504 having the bottom part 503 are attached to the eaves end side of the adjacent truss 1000, and the eaves beam connection part 501 is relatively positioned. This is done by connecting both ends of the eaves beam 1001 to the eaves beam connection portion 501 facing each other. Hereinafter, this will be described in more detail.
[0097]
When the eaves beam mounting bracket 504 is installed at the eaves end of the truss 1000, the truss eaves 1003 and the plate 1004 provided at the eaves end of the truss 1000 are obstructed. Requires a pretreatment step. FIG. 43 shows the procedure of this pre-processing step, and FIGS. 44 and 45 show the state after the work for each procedure.
[0098]
In procedure 1, the truss eaves tip 1003 is cut off. This is because the truss eaves tip portion 1003 is appropriately shortened to facilitate subsequent operations. Here, FIG. 44A shows a state before the work in this procedure, and FIG. 44B shows a state after the work. As a tool used for cutting, for example, a reciprocating saw (not shown) can be used, and the same applies to a cutting operation described later.
[0099]
In step 2, in order to remove the plate 1004 having a substantially inverted L-shaped cross section provided at the end of the eaves side of the truss 1000 facing the eaves, the truss 1000 must be along the joint surface between the plate 1004 and the truss 1000. And the truss eaves portion 1003 is cut in the vertical direction. At this time, if the plate 1004 and the truss 1000 are avoided from being welded to each other and cut slightly inside the joint surface between the plate 1004 and the truss 1000, the cutting is easy. Here, FIG. 44C shows a state after the operation of this procedure.
[0100]
In step 3, the truss eaves tip 1003 is cut slightly to the eaves end from the tip of the C-shaped steel 1005 of the truss 1000 until it reaches the web 1006 of the truss 1000. This is to remove a part that hinders the installation of the eaves beam installation metal fitting 504. Here, FIG. 44D shows a state after the operation of this procedure.
[0101]
In procedure 4, the plate 1004 is cut off from the truss 1000 by cutting the lower part of the plate 1004 horizontally from the eaves side. Here, FIG. 45A shows a state after the operation of this procedure.
[0102]
In step 5, for example, by using a tool such as a sander (not shown), the remaining pieces of the plate 1004 remaining in the lower part of the truss 1000 in step 4 are removed. Thereby, there is an advantage that the eaves beam installation metal fitting 504 can be easily accommodated in the portion. Here, FIG. 44B shows a state after the operation of this procedure.
[0103]
In step 6, the joint surface between the truss 1000 and the truss eaves portion 1003 is cut along the slope of the web 1006 of the truss 1000 from the eaves side to the position cut in step 3, and the eaves side of the truss eaves portion 1003 is cut. Has been removed. Here, FIG. 45C shows a state after the operation of this procedure.
[0104]
46. A pair of left and right web straddling portions 501 which stand vertically from the bottom portion 503 of the eaves beam mounting bracket 504 shown in FIG. 46 are arranged substantially in parallel with a slightly larger interval than the thickness of the web 1006 of the truss 1000. . When the eaves beam mounting bracket 504 is installed, as shown in FIGS. 47 and 48, the web straddling portion 501 straddles the eaves end side of the web 1006 of the truss 1000 subjected to the pretreatment as described above. The eaves beam mounting bracket 504 is applied, the eaves beam mounting bracket 504 is pushed in until the eaves side end of the web 1006 of the truss 1000 reaches the orthogonal beam connection portion 502, and the through hole 505 provided in the web straddling portion 501, and the bottom portion In the through hole 506 provided in the 503, the truss 1000 and the frame 1007 are fixed by bolting.
[0105]
The eaves beam connecting portions 501 projecting from both sides of the eaves beam mounting bracket 504 form an angle of approximately 90 ° with both the web straddling portion 501 and the bottom portion 503, and as shown in FIG. The web 1008 of the eaves beam 1001 made of H-shaped steel is brought into contact with the beam connection portion 501, and is fixed by bolting in a through hole 507 provided in the eaves beam connection portion 501, so that the eaves beam 1001 extends along the eaves. Has been installed.
[0106]
The orthogonal beam connecting portion 502 is provided at an angle of approximately 90 ° with both the web straddling portion 501 and the bottom portion 503, and the eaves side surface is formed as a flat surface. As a result, when the eaves beam mounting bracket 504 is installed, the flat surface of the orthogonal beam connection portion 502 faces the eaves, and as shown in FIGS. The orthogonal beam 1002 can be easily installed by joining one end of the beam 1002 via a joining plate 1009 and fixing the beam 1002 with a bolt in a through hole 508 provided in the orthogonal beam connection portion 502.
[0107]
Also, in the case where an extension is provided by providing a roofing beam 1010 on the eaves side, it is necessary to newly install an eaves beam 1001 along the eaves on the side of the girder of the existing house. In this case, the pretreatment of the truss eaves portion 1003, the installation of the eaves beam installation bracket 504, and the installation of the eaves beam 1001 are performed in the same procedure as the case of the installation of the orthogonal beam 1002, and as shown in FIG. The base 1011 of the beam 1010 can be joined to the beam connecting portion 502 and fixed by bolting.
[0108]
Next, in the second embodiment of the installation of the eaves beam, as shown in FIG. 42, the eaves beam 1001 is installed on one side of the existing truss 1000 along the eaves on the side of the girder of the existing house, and This is a method of installing an eaves beam 1002 in a case where it is necessary to install an orthogonal beam 1002 in a direction orthogonal to the eaves beam 1001 on the extension side, and pre-treats the truss eaves part 1003 in the same procedure as in the first embodiment. 51 (a), the web straddling portion 510, the eave beam connection portion 511, the orthogonal beam connection portion 512, and the eave beam mounting bracket 514 having the bottom portion 513 as shown in FIG. The eaves beam mounting bracket 519 having a web straddling portion 515, an eaves beam connection portion 516, an orthogonal beam connection portion 517, and a bottom portion 518 as shown in FIG. Beam connection part 511 or 516 Respectively arranged to face, the eaves beam connecting portion 511 or 516 opposed, is performed by connecting the both end portions of the eaves beam 1001. Hereinafter, this will be described in more detail.
[0109]
The web straddling portion 510 and the web straddling portion 515 have the same shape as the web straddling portion 501 of the eaves beam installation metal fitting 504 of the first embodiment, and are installed on the eaves edge of the truss 1000. Is the same as in the first embodiment.
[0110]
The eaves beam connecting portion 511 provided on the right side of the eaves beam mounting bracket 514 forms an angle of approximately 90 ° with both the web straddling portion 510 and the bottom portion 513, and as shown in FIG. The web 1008 of the eaves beam 1001 made of H-shaped steel is brought into contact with the connection portion 511, and the eaves beam 1001 is installed along the eaves by fixing it with bolts in the through holes 520 provided in the eaves beam connection portion 511. are doing. Further, the eaves beam installation fitting 519 has an eaves beam connection part 516 on the left side, and the other structure and the method of connecting the eaves beam 1001 are the same as those of the eaves beam connection fitting 26. The above two eaves beam mounting brackets 514 and 519 may be properly used depending on the positional relationship between the truss 1000 and the newly added eaves beam 1001.
[0111]
The orthogonal beam connection portion 512 and the orthogonal beam connection portion 517 have the same shape as the orthogonal beam connection portion 502 of the eaves beam mounting bracket 504 of the first embodiment, and are formed by the same procedure as that of the first embodiment. The orthogonal beam 1002 or the roof down beam 1010 can be installed on the extension side.
[0112]
Next, in the third embodiment of the installation of the eaves beam, as shown in FIG. 42, the eaves beams 1001 are installed on both sides of the existing truss 1000 along the eaves on the side of the girder of the existing house, and This is an eaves beam installation method in a case where it is not necessary to install the orthogonal beams 1002 in a direction orthogonal to the eaves beam 1001 on the extension side, and after performing pre-processing on the truss eaves portion 1003 as shown in FIG. As shown in FIG. 54, a pair of left and right blade members having a slope portion 530, a lid member 532 having a reinforcing plate 531, an eave beam connection portion 533, a slope portion 534, a web joining portion 535, and a bottom portion 536. 537, and an eaves beam mounting bracket 538 having an eaves beam connecting portion 533 protrudingly arranged at an eaves end side of the adjacent truss 1000. In connection part 533, eaves Both end portions of the 1001 is performed by connecting the. Hereinafter, this will be described in more detail.
[0113]
In the case of the present embodiment, as a pre-process applied to the truss eaves portion 1003, as shown in FIG. 53, the truss eaves portion 1003 is cut at a position slightly closer to the extension portion than the eaves, and the eaves side is removed. This is because, in the present embodiment, since there is no need to provide the orthogonal beam 1002 on the extension part side, even if the truss eaves part 1003 slightly protrudes toward the extension part side, it does not interfere. Of course, in this case, the pre-processing may be performed according to the procedure of the first embodiment, and the eaves beam mounting bracket 504 may be installed. However, as in the present embodiment, the pre-processing is simplified, and the eaves beam mounting bracket is provided. The use of 538 has the advantage that work efficiency can be improved.
[0114]
The blade member 537 shown in FIG. 54 has an eave beam connection portion 533 extending to one side thereof, and the eave beam connection portion 533 forms an angle of about 90 ° with both the bottom portion 536 and the web connection portion 535. ing. When connecting the eaves beam 1001, the web 1008 of the eaves beam 1001, which is an H-shaped steel, is brought into contact with the eaves beam connection portion 533 as shown in FIG. The eaves beam 1001 is installed along the eaves by fixing with bolts.
[0115]
The lid member 532 has a function of connecting and integrating the blade members 537 at the upper portions thereof, and is provided to prevent the blade member 537 from wobbling against the action of an external force and falling off. As shown in FIG. 54, a reinforcing plate 531 is provided inside the cover member 532 in order to reinforce the structural weakness.
[0116]
The inclined portion 534 of the blade member 537 and the inclined portion 530 of the lid member 532 have the same inclination angle. As shown in FIG. 57, both are joined, and the blade member 537 and the lid member 532 are bolted to each other. It is fixed. In the case of the present embodiment, the inclination angle is equal to the inclination angle of the truss eaves tip 1003. This makes it possible to arrange the blade members 537 on the eaves side of the truss 1000 so as to fit therein.
[0117]
When installing the eaves beam mounting bracket 538, as shown in FIGS. 56 and 57, first, each of the blade members 537 is joined to the eaves end of the truss 1000, and the bottom 536 is joined to the flange 1012 of the truss 1000. Further, the web joining portion 535 is provided so as to be joined to the web 1006 of the truss 1000, and is fixed by bolting in a through hole 540 provided in the bottom portion 536. Next, the lid member 532 is put on from above the truss eaves portion 1003, and each inclined portion 530 of the lid member 532 is joined to each inclined portion 534 of the blade member 537. Further, the position of the through hole 541 provided in the inclined portion 530 of the lid member 532 and the position of the through hole 542 provided in the inclined portion 534 of each of the blade members 537 may be adjusted, and then fixed by bolting.
[0118]
In this embodiment, the case where the eaves beam 1001 is installed on both sides of the truss 1000 along the eaves on the side of the girder has been described. However, the eaves beam 1001 may be installed only on one side of the truss 1000. The eaves beam mounting bracket 538 may be installed in a similar procedure, and one of the eaves beam connection portions 533 of the blade member 537 may be left unused. In this case, if only one of the blade members 537 is installed, the lid member 532 may not be stable, and may wobble or fall off. Therefore, it is preferable to always use the blade member 537 in a state where the left and right pairs are aligned. .
[0119]
In any of the three embodiments described above, when installing the eaves beam 1001, as shown in FIG. 58, between the truss 1000 and the truss 1000, between the truss 1000 and the corner beam 1013, and between the truss 1000 and the climbing beam 1014. Between the climbing beams 1014 and the corner beams 1013, and whether the metal fittings to be installed at the eaves-side end of the truss 1000 are those of the first to third embodiments. Therefore, it is necessary to appropriately change the longitudinal dimension of the eaves beam 1001 and the shape of the end.
[0120]
In particular, when there is an existing corner beam 1013 at one end side of the eave beam 1001, by providing the corner beam connecting beam 550 at the end of the eave beam 1001 on the side of the corner beam 1013, the eave beam 1001 becomes the corner beam 1013. Prevents contact.
[0121]
As shown in FIG. 59, the corner beam connecting beam 550 is fixed to the vertical plate 551, the upper edge of the vertical plate 551, the upper surface plate 552 orthogonal to the vertical plate 551, and the lower edge of the vertical plate 551. A bottom plate 553 orthogonal to the vertical plate 551, a box portion 554 having a substantially rectangular parallelepiped shape fixed on the bottom plate 553, and a reinforcing plate 555 provided inside the box portion 554. As shown in FIG. 61, the ends of the top plate 552, the bottom plate 553, and the vertical plate 551 are fixed to the eave beam 1001 via the joining plate 1015, and are provided on the bottom surface of the box portion 554. In the through hole 556, it is fixed to the shaft set 1007 by bolting.
[0122]
The upper surface plate 552 and the vertical plate 551 have a shape obtained by diagonally cutting off a part of a substantially rectangular flat plate. This prevents the upper surface plate 552 and the vertical plate 551 from coming into contact with the corner beam 1013 extending from obliquely above the corner beam connecting beam 550 to obliquely below.
[0123]
When it is necessary to provide a roofing down beam 1010 on the extension portion side at the connection portion between the corner beam 1013 and the corner beam connection beam 550, and to add the extension, as shown in FIG. The base 1011 of the roofing beam 1010 may be joined and fixed by bolting in a through hole 557 provided on the side surface of the box portion 554 on the side of the extension portion. Further, when the roofing down beam 1010 is not connected, the side surface of the extension portion side of the box portion 554 does not need to be a flat surface, and the shape of the box portion 554 is not limited to a hollow substantially rectangular parallelepiped, but may be another shape. It does not matter.
[0124]
Further, as shown in FIG. 58, when it is necessary to connect one end of the eaves beam 1001 to the climbing beam 1014, it may be connected using an existing climbing beam connection fitting 1016 or the like.
[0125]
【The invention's effect】
As described above, according to the method for expanding a hut set according to claim 1 of the present invention, a new hut can be constructed from the end of an existing hut without completely dismantling the hut set of an existing house. There is an advantage that the corner beam can be extended toward the end and the climbing beam in the middle of the existing large building can be extended toward the end of the new large building.
[0126]
Further, since the existing hut group is not completely dismantled, there is an advantage that not only the construction period can be shortened, but also the workability can be improved while reducing labor.
[0127]
Furthermore, since the connection of each member is performed by fastening with a fastener, there is an advantage that not only the workability can be improved, but also sufficient safety can be secured as compared with welding.
[0128]
Furthermore, since the existing hut is not completely dismantled, there is an advantage that not only the amount of industrial waste generated can be reduced, but also the cost for transporting and processing the waste can be reduced. .
[0129]
In addition, there is an advantage that the shortening of the construction period shortens the period of inconvenience to the customer, thereby reducing the burden on the customer.
[0130]
According to the method for constructing an extension of a hut group according to claim 2, in addition to the advantage of claim 1, the installation direction of the main building on the extension section side of the existing house can be substantially reduced without removing all the existing main buildings of the existing house. There is an advantage that the new main house of the extension can be arranged on the same plane as the existing main house of the existing house by changing the angle by 90 °.
[0131]
According to the method for constructing an extension of a hut set according to the third aspect, there is an advantage that an eave beam can be easily installed without completely disassembling a hut set or the back of an eave of an existing house.
[0132]
In addition, since it is not necessary to completely dismantle the existing house, such as the hut and eaves, it is possible to save labor and significantly shorten the construction period. In addition, since unnecessary truss generated at the time of dismantling is not generated, it is possible to reduce costs required for processing.
[0133]
According to the method for constructing a hut group according to claim 4, similar to the method for constructing a hut group according to claim 3, without completely dismantling the hut group or the back of the eaves of the existing house, Eaves beams can be easily installed.
[0134]
In addition, since it is not necessary to completely dismantle the existing house, such as the hut and eaves, it is possible to save labor and significantly shorten the construction period. In addition, since unnecessary truss generated at the time of dismantling is not generated, it is possible to reduce costs required for processing.
[0135]
That is, according to the method for expanding and constructing a hut group of the present invention, there is an advantage that labor saving of construction, cost reduction and waste reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing an entire hut assembly according to an embodiment of the present invention.
FIG. 2 is a side view showing a hut group including a new corner beam.
FIG. 3 is an enlarged view of a part A of FIG. 2;
FIG. 4 is an explanatory diagram showing a connection procedure between a corner beam extension bracket and a new corner beam.
FIG. 5 is a plan view showing a procedure for fixing a corner beam extension fitting to a corner top purlin receiver.
FIG. 6 is a plan view of FIG. 3;
FIG. 7 is a side view showing a hut group including a new corner beam in the Japanese hut group.
FIG. 8 is a side view showing a hut set including a new climbing beam.
FIG. 9 is a perspective view showing a climbing beam extension fitting.
FIG. 10 is an enlarged view of a part B of FIG. 8;
FIG. 11 is a plan view of FIG. 10;
FIG. 12 is a perspective view showing a new climbing beam bundle and a climbing beam bundle connection fitting.
FIG. 13 is an enlarged view of a part C of FIG. 8;
FIG. 14 is a plan view of FIG.
FIG. 15 is an explanatory diagram showing a procedure for connecting a climbing beam extension fitting to a top purlin receiver.
FIG. 16 is an explanatory view showing a procedure for fixing the climbing beam bundle connection fitting to an existing climbing beam on the extension portion side in a portion D in FIG.
FIG. 17 is an explanatory view showing a procedure for fixing the climbing beam bundle connection fitting to the existing climbing beam on the extension portion side.
FIG. 18 is a side view showing a climbing beam bundle connection fitting of another embodiment.
FIG. 19 is a plan view showing a climbing beam bundle connection fitting of another embodiment.
FIG. 20 is a side view showing a climbing beam bundle connection fitting of another embodiment.
FIG. 21 is a side view showing a hut group including a new climbing beam in a Japanese hut group.
FIG. 22 is a plan view schematically showing the entire hut assembly according to the embodiment of the present invention.
FIG. 23 is a plan view showing an embodiment of an eaves purlin.
FIG. 24 is a perspective view showing an eaves front purlin receiving bracket and an eaves front purlin extension bracket.
FIG. 25 is an explanatory diagram showing a procedure for fixing an eaves front purlin extension bracket to an eaves front purlin receiving bracket.
FIG. 26 is an explanatory diagram showing a procedure for connecting a new eaves front purlin to an eaves front purlin extension fitting.
FIG. 27 is a plan view showing an embodiment of the first purlin.
FIG. 28 is a plan view showing a first purlin receiving fitting.
FIG. 29 is a perspective view showing a first purlin extension fitting.
FIG. 30 is an explanatory diagram showing a procedure for fixing the first purlin extension metal fitting to the first purlin receiving metal fitting.
FIG. 31 is an explanatory view showing a procedure for connecting a new first purlin to a first purlin extension.
FIG. 32 is a plan view showing an embodiment of the second purlin.
FIG. 33 is a plan view showing a second purlin receiving fitting.
FIG. 34 is a perspective view showing a second purlin extension.
FIG. 35 is an explanatory diagram showing a procedure for fixing the second purlin extension metal fitting to the second purlin receiving metal fitting.
FIG. 36 is an explanatory diagram showing a procedure for connecting a new second purlin to a second purlin extension.
FIG. 37 is a plan view showing an embodiment of a general purlin.
FIG. 38 is a plan view showing a general purlin receiving fitting.
FIG. 39 is a perspective view showing a general purlin extension fitting.
FIG. 40 is an explanatory diagram showing a procedure for fixing a general purlin extension bracket to a general purlin receiving bracket.
FIG. 41 is an explanatory diagram showing a procedure for connecting a new general purlin to a general purlin extension.
FIG. 42 is a plan view schematically showing an entire hut assembly according to an embodiment of the present invention.
FIG. 43 is an explanatory diagram for describing a flow of pre-processing for a truss eaves tip portion.
FIG. 44 is an explanatory diagram for describing a pre-process for a truss eaves tip portion for each procedure.
FIG. 45 is an explanatory diagram for describing pre-processing for a truss eaves tip portion for each procedure.
FIG. 46 is a schematic perspective view of an eaves beam installation fitting.
FIG. 47 is a schematic perspective view for explaining a method of installing an eaves beam installation fitting.
FIG. 48 is a schematic side view showing an installation state of an eaves beam installation fitting.
FIG. 49 is a schematic plan view showing a connecting portion between an eaves beam installation bracket and an eaves beam.
FIG. 50 is a schematic side view showing a connection portion between an eaves beam installation fitting and a roof down beam.
FIG. 51 is a schematic perspective view of an eaves beam installation fitting.
FIG. 52 is a schematic plan view showing a connection portion between the eaves beam installation bracket and the eaves beam.
FIG. 53 is an explanatory diagram for describing pre-processing for a truss eaves tip portion.
FIG. 54 is a schematic perspective view of an eaves beam installation fitting.
FIG. 55 is a schematic plan view showing a connecting portion between the eaves beam installation bracket and the eaves beam.
FIG. 56 is a schematic perspective view for explaining a method of installing an eaves beam installation fitting.
FIG. 57 is a schematic side view showing an installation state of an eaves beam installation fitting.
FIG. 58 is a schematic plan view for explaining a connection portion between a truss, a corner beam, a climbing beam, and an eave beam.
FIG. 59 is a schematic perspective view of a corner beam connecting beam.
FIG. 60 is a schematic plan view showing a joint portion between a corner beam joint beam and a roof down beam.
FIG. 61 is a schematic perspective view showing a joint portion between a corner beam joint beam and a corner beam.
[Explanation of symbols]
1 Existing corner beams
8 Existing climbing beams
100 new corner beams
200 New climbing beam

Claims (4)

It is a construction method of a hut set in an extension work when expanding the entire girder face of an existing house with a built-in ridge,
A corner-top purlin receiving connection installed on a corner-top purlin receiver installed at the upper end of a vertical member below the end of the existing large building, and a rising angle of an existing corner beam from one edge of the corner-top purlin receiving connection. Using a corner beam extension fitting having a corner beam connecting portion rising at an equal angle, connecting one end of a new corner beam to the corner beam connecting portion, fixing the corner top purlin receiving connection portion to the corner top purlin receiver. By installing one end of the new corner beam on the extension of the existing corner beam, extending the corner beam from the end of the existing building toward the end of the new building,
A flat part installed on the top of the vertical member below the middle part of the existing large building, a top purlin receiving connection installed on the top purlin receiver installed on the upper end of the vertical member, and one of the purlin receiving connection Using a climbing beam extension fitting having a climbing beam connecting portion that rises at a rising angle substantially equal to the rising angle of the existing climbing beam from the side central portion, connecting one end of the new climbing beam to the climbing beam connecting portion, By fixing the flat part to the top of the vertical member and fixing the top purlin receiving connection to the top purlin receiver, installing one end of the new climbing beam on an extension of the existing climbing beam, A climbing beam bundle connection having a climbing beam bundle connection fitting installed on an existing climbing beam on the extension section side at a lower end and a new climbing beam connection portion connected to the new climbing beam at an upper end portion. Fix the bracket to the existing climbing beam, An existing large building is constructed by connecting a connecting section of the new climbing beam to the new climbing beam and vertically erecting the new climbing beam bundle between the new climbing beam and the existing climbing beam on the extension side. The extension method of the hut group, characterized by extending the climbing beam in the middle of the new building toward the end of the new building. A purlin extension fitting having a purlin receiving connection installed on a purlin receiving fitting installed on an existing corner beam located at a boundary between an existing house and an extension part, and a purlin connecting part forming approximately 90 ° with the purlin receiving connection. Use, fixing the purlin receiving connection portion to the purlin receiving bracket, and installing a new purlin of the extension section on an extension of the existing purlin installed in the purlin receiving bracket, thereby providing the main house on the extension section side of the existing house. 2. The method according to claim 1, wherein the installation direction is changed by approximately 90 [deg.], And the new main building of the extension section is arranged on substantially the same plane as the existing main building. Eaves beam construction method to add a new eaves beam along the eaves on the side of the girder of an existing house in the extension work on the side of the girder of a house where the truss eaves are extended diagonally downward from one end of the truss of the hut. Then, cut off the eaves side of the truss eaves on the side of the girder to which the eaves girder of the existing house is added, and oppose the protruding eaves beam connection at the eaves end of the adjacent truss 3. The extension construction of the hut assembly according to claim 1 or 2, wherein the eaves beam installation metal fittings are respectively arranged, and both ends of the eaves beam are connected to these opposing eaves beam connection portions. Law. An eaves beam installation method that adds a new eaves beam along the eaves on the side of the girder of an existing house during the extension work on the girder side of a house where the truss eaves extend diagonally downward from one end of the truss of the hut. And cutting off the truss eaves portion on the side of the girder where the eaves beam of the existing house is added, and at the end of the eaves side of the adjacent truss, a web bridging portion bridging the web of the truss, and the web bridging portion An eaves beam connection fitting having an eaves beam connection portion projecting at right angles to the eaves beam connection portion is disposed with the eaves beam connection portions facing each other. The method for constructing an extension of a hut group according to any one of claims 1 to 3, wherein

Images