JP3877062B2 - Extension construction method of hut assembly - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an extension work at the time of extension of a dormitory house, and relates to an extension construction method of a hut assembly in which a hut assembly of an extension part is constructed without completely dismantling the hut assembly of an existing house.
[0002]
[Prior art]
If a part of the girder face of a dormitory structure is expanded, the height of the ridge and the direction of the ridge will be higher after the expansion, and the entire structure of the hut will often change.
[0003]
In such a case, it is necessary to add another member to the existing member of the existing shed, or remove the existing member and replace it with a new member. Need to be changed. For this reason, in the past, the existing hut assembly was completely dismantled and reconstructed into a new hut assembly.
[0004]
[Problems to be solved by the invention]
However, since the existing hut assembly was completely dismantled and reconstructed into a new hut assembly, it took a lot of time and labor, and not only the construction period was lengthened, but also the workability was poor. .
[0005]
In addition, when each component of the hut is made of a metal such as steel, it is possible to add another member to the existing member by welding. In consideration of living as usual in the past, there is a problem that it is difficult to ensure sufficient safety.
[0006]
Furthermore, there is a problem in that a large amount of industrial waste is generated by dismantling the existing hut assembly, and it is expensive to transport and process the waste.
[0007]
Furthermore, as mentioned above, in many cases, it is desirable that the extension work be completed in a short period because the customer lives in the existing house even during the extension work. As a result, the period of inconvenience to the customer becomes longer and the burden on the customer increases.
[0008]
The present invention has been made in view of the above-described problems, and is intended to save labor, reduce costs, and reduce waste in an extension work when adding to a part of a girder face of a dormitory existing house. The purpose is to provide an extension construction method for huts.
[0009]
[Means for Solving the Problems]
Specific means for solving the technical problem is as follows. That is, according to the method for extending a hut assembly according to claim 1, a part of the existing hut assembly of the existing house and a part of the new hut assembly of the extension section are arranged on a part of the girder surface of the existing house of the dormitory structure. It is a method of extension of a hut assembly in extension work when extending the height of the extension part lower than the height of the existing house on the same surface, and the existing corner wooden beam located at the boundary between the existing house and the extension part Using a purlin extension fitting having a purlin receptacle connection portion installed on the installed purlin receptacle fitting and a purlin connection portion forming approximately 90 ° with the purlin receptacle connection portion, and fixing the purlin receptacle connection portion to the purlin receptacle fitting Then, by installing the new purlin of the extension part on the extension of the existing purlin installed in the purlin bracket, the installation direction of the main part on the extension part side of the existing house is changed by approximately 90 °, Arrange the new purlin in the same plane as the existing purlin At the upper end of the new valley wooden beam installed along the valley that occurs at the boundary of the extension part, Tanigi beam fittings Fixing the valley beam mounting part of the above, and forming an angle of approximately 90 ° with the valley tree beam mounting part, and rising at an angle substantially equal to the rising angle of the existing corner tree beam, Tanigi beam fittings The corner wood beam mounting portion is fixed to the middle portion in the longitudinal direction of the existing corner wood beam.
[0010]
The extension construction method of the hut assembly according to claim 2 is the same as the extension construction method of the hut assembly according to claim 1, in which the truss eaves on the side of the girder side of the existing house is cut out and the eaves side of the adjacent truss At the end, there is a web straddling portion that straddles the web of the truss, and an eaves beam connecting portion that protrudes perpendicularly from the web straddling portion Eaves beam installation bracket The eaves beam connecting portions are arranged opposite to each other, and by connecting both ends of the eaves beam to the opposed eaves beam connecting portions, the eaves beam is formed along the eaves on the side surface of the existing house. It is characterized by adding new.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hut assembly extension method according to the embodiment of the present invention is a case where extension is performed on a part of a girder surface of an existing house, and the extension part and a part of the hut assembly of the existing house are the same surface. And the height of the ridge of the extension part is lower than the height of the ridge of the existing house. In this case, first, the direction of the main building on the extension part side of the existing house is approximately 90 degrees change, the main building on the side of the extension is arranged on the same plane as the main buildings 2, 21, 43, and 65 of the existing house that forms approximately 90 degrees with this, and on the extension line, secondly, A new eaves beam 84 is added along the eaves on the side of the girders of the existing house. Third, the upper end of the new valley beam 127 installed in the valley generated between the existing house and the extension part is the existing corner tree of the existing house. It is necessary to connect to the middle part of the beam 3. Hereinafter, each will be described in more detail.
[0012]
1stly, as shown in FIG. 1, the installation direction of the main building by the side of the extension part of an existing house is changed about 90 degrees, and the new main part of an extension part is arrange | positioned in the substantially same surface as the existing main building of an existing house. First, the new eaves purlin 1 of the extension part is arranged on substantially the same plane as the existing eaves purlin 2 of the existing house. Specifically, as shown in FIG. 2, the eaves main building installed at the tip of the existing eaves beam 4 provided at the eaves part of the existing corner wooden beam 3 (not shown) located at the boundary between the existing house and the extension part. The eaves purlin extension metal fitting 6 is fixed to the receiving metal fitting 5, and the end 7 of the new eaves main house 1 is connected to the eaves main purlin extension metal 6, thereby installing the new eaves main house 1 on the extension of the existing eaves main house 2. The existing corner wooden beam 3 and the existing eaves beam 4 shown in each of the embodiments have the same configuration as that of the existing corner wooden beam 3 shown in FIG. 3, and are obtained by fastening two C-shaped steels with bolts. In addition, it is provided so as to be taken out in the direction of 45 ° from the end of the existing large building toward the corner of the eaves (see FIG. 1).
[0013]
As shown in FIG. 3, the existing eaves purlin 2 is a long timber with a tip formed in a predetermined shape, and the end is bolt nuts to the eaves purlin bracket 5 provided at the tip of the existing eaves beam 4. It is installed on the existing eaves beam 4 by being fastened and fixed with a fastener 8 composed of (see FIG. 1).
[0014]
As shown in FIG. 3, the eaves purlin bracket 5 is bent at an angle of about 90 ° at the center, and has a chevron plate 10 having through holes 9 at both ends, and a bend of the chevron plate 10. It has a substantially rectangular connecting plate 12 with one edge fixed to the corner of the portion 11. The eaves purlin bracket 5 is fixed to the existing eaves beam 4 by inserting the other end of the connection plate 12 from the tip of the existing eaves beam 4 between the two C-shaped steels of the existing eaves beam 4. Is fixed to the tip of the existing eaves beam 4 by bolting.
[0015]
As shown in FIG. 2, the existing eaves purlin 2 is fixed to the eaves purlin bracket 5 so that the front end of the existing eaves purlin 2 and the front end of the existing eaves purlin 13 on the extension side substantially coincide with each other. The end of the existing eaves purlin 2 and the end of the existing eaves purlin 13 on the extension part side are assigned to both outer side surfaces of the angle plate 10 of the metal fitting 5, and are fastened by fastening with the fasteners 8. As a result, the existing eaves purlin 2 and the existing eaves purlin 13 on the extension part side are arranged on the same surface and at the tip of the existing eaves beam 4 at an angle of approximately 90 °.
[0016]
As with the existing eaves purlin 2 shown in FIG. 3, the new eaves purlin 1 is a long wooden square member having a tip formed in a predetermined shape, and a through hole 14 is formed in the end 7 ( (See FIG. 5).
[0017]
As shown in FIG. 3, the eaves purlin extension metal fitting 6 is bent so that an angle of about 90 ° is formed by twisting one plate having through holes 15 and 16 at both ends at the center. One of them is an eaves purlin receiving connection part 17 and the other is an eaves purlin connection part 18.
[0018]
As shown in FIG. 4, the eaves purlin extension metal fitting 6 is fixed to the eaves purlin extension fitting 6 on the side surface of the eaves purlin extension metal plate 10 on the side of the extension portion 10. The side surface 17 is arranged so that the bent portion 11 of the eaves purlin bracket 5 and the bent portion 19 of the eaves purlin extension bracket 6 are substantially matched, and the through hole 9 of the angle plate 10 of the eaves purlin bracket 5 and the eaves purlin This is performed by fastening the through-hole 15 of the eaves purlin receiving connection portion 17 of the extension fitting 6 with the fastener 8. As a result, as shown in FIG. 4, the eaves purlin connecting portion 18 of the eaves purlin extension bracket 6 and the side surface of the eaves purlin support 5 on the side of the existing eaves purlin 2 of the mountain-shaped plate 10 are substantially flush with each other. Placed in.
[0019]
As shown in FIG. 5, the end 7 of the new eaves purlin 1 is connected to the eaves purlin extension bracket 6 after the eaves purlin extension bracket 6 is fixed to the eaves purlin support bracket 5. The end 7 of the new eaves purlin 1 is applied to the eaves purlin connecting portion 18 of the eaves purlin extension metal fitting 6 so that the front end of the eaves purlin 1 substantially coincides with the through hole 14 of the end 7 of the new eaves purlin 1 This is performed by fastening the through hole 16 of the eaves purlin connecting portion 18 of the eaves purlin extension metal fitting 6 with the fastener 8. Thereby, as shown in FIG. 2, the new eaves purlin 1 is installed on the extension of the existing eaves purlin 2.
[0020]
As described above, as shown in FIG. 1, the installation direction of the main building on the extension part side of the existing house is changed by approximately 90 °, and the new eaves main building 1 is arranged on the same plane as the existing eaves main building 2, that is, the existing eaves Purlin 2 will be extended to the extension.
[0021]
Next, as shown in FIG. 1, the new first purlin 20 of the extension part is arranged on the same plane as the existing first purlin 21 of the existing house. Specifically, as shown in FIG. 6, the first purlin extension bracket 23 is fixed to the first purlin support bracket 22 installed at the end of the existing corner beam 3 (not shown) of the existing eaves beam 4. Then, the new first purlin 20 is installed on the extension of the existing first purlin 21 by connecting the end 24 of the new first purlin 20 to the first purlin extension metal fitting 23. The new first purlin 20 is a long wooden timber, and a through hole 25 is formed in the end 24 (see FIG. 10).
[0022]
The existing first purlin 21 has the same configuration as that of the existing eaves purlin 2, and as shown in FIG. 6, the end 8 is fastened to the first purlin bracket 22 provided at a predetermined position of the existing eaves eaves beam 4. It is installed on the first level of the existing eaves purlin 2 by fastening and fixing at (see FIG. 1).
[0023]
As shown in FIG. 7, the first purlin bracket 22 has a substantially trapezoidal flat portion 26 whose oblique side forms an angle of approximately 45 ° with respect to the long side, and an angle of approximately 90 ° from the long side of the flat portion 26. And a first purlin receiving portion 28 having a through hole 27 formed at an end thereof. The first purlin support bracket 22 is fixed to the existing eaves beam 4 by welding, and each of the two first purlin support members 22 is arranged such that each first purlin support portion 28 is relative to the long axis L of the existing eaves beam 4. It is provided on both side surfaces of the existing eaves beam 4 so as to be symmetrical, that is, so that the first purlin receiving portions 28 form an angle of approximately 90 °.
[0024]
The fixing of the existing first purlin 21 to the first purlin bracket 22 is as shown in FIG.
The tip of the existing first purlin 21 is brought into contact with the side surface of the extension part of the existing eaves beam 4, the end of the existing first purlin 21 is placed on the flat part 26 of the first purlin bracket 22, and the first purlin bracket This is done by fastening the first purlin receiving portion 28 of 22 with the fastener 8. Thereby, the existing first purlin 21 and the existing first purlin 29 on the extension part side are arranged on the existing eaves beam 4 at an angle of about 90 ° on the same plane.
[0025]
As shown in FIG. 8, the first purlin extension metal 23 has a substantially trapezoidal lid portion 30 whose oblique side forms an angle of about 45 ° with respect to the long side, and an angle of about 90 ° from the short side of the lid portion 30. And a first purlin receiving connection member 33 having a first purlin receiving connection portion 32 having a through-hole 31 formed in the lower corner and a hypotenuse with an angle of approximately 45 ° with respect to the long side. And a first purlin connection portion 36 that rises upward at an angle of approximately 90 ° from the short side of the bottom portion 34 and has a through hole 35 formed in the upper corner portion. The first purlin connection member 37, the substantially rectangular attachment portion 38, the edge opposite to the oblique side of the lid portion 30, and the substantially rectangular reinforcing portion 39 fixed to the edge of the first purlin receiving connection portion 32. In addition, the oblique side of the bottom 34, the edge of the first purlin connection portion 36, and the oblique side of the lid portion 30 on the surface of the attachment portion 38. It is obtained by forming by sticking.
[0026]
As shown in FIG. 9, the first purlin extension fitting 23 is fixed to the first purlin support fitting 22 on the side of the extension, as shown in FIG. 9. The first purlin of the first purlin receiving connection member 33 of the first purlin extension fitting 23 is placed on the side surface of the flat portion 26 of the first purlin receiving portion 28 of the first purlin receiving bracket 22. Along with the receiving connection portion 32, the back surface of the appendage 38 of the first purlin extension bracket 23 is applied to the side of the extension portion of the existing eaves beam 4, and the first purlin extension is extended to the first purlin receiving portion 28 of the first purlin bracket 22. This is performed by fastening and fixing the first purlin receiving connection portion 32 of the metal fitting 23 with a fastener (not shown).
[0027]
At this time, if the length of the bent portion of the first purlin receiving connection member 33 of the first purlin extension fitting 23 is substantially equal to the upper edge of the first purlin receiving portion 28 of the first purlin receiving bracket 22, When the first purlin extension bracket 23 is fixed to the first purlin support bracket 22, the first purlin support connection member 33 of the first purlin extension bracket 23 is connected to the existing eaves beam 4 and the reinforcing portion 39 of the first purlin extension bracket 23. Therefore, the first purlin extension bracket 23 can be stably installed on the first purlin support bracket 22 (see FIG. 10).
[0028]
As a result, as shown in FIG. 10, the bent portion 40 of the first purlin connecting member 37 of the first purlin extension bracket 23 is connected to the bent portion 41 of the first purlin bracket 22 toward the existing first purlin 21. It arrange | positions on the substantially identical surface and its extension line.
[0029]
As shown in FIG. 10, the end 24 of the new first purlin 20 is connected to the first purlin extension bracket 23 after the first purlin extension bracket 23 is fixed to the first purlin support bracket 22, as shown in FIG. The end 24 of the new first purlin 20 is placed on the first purlin connection member 37 of the metal fitting 23, and the through hole 25 of the end 24 of the new first purlin 20 and the first purlin connection of the first purlin extension metal fitting 23 are connected. This is performed by fastening the through hole 35 of the portion 36 with the fastener 8. Thereby, as shown in FIG. 6, the new first purlin 20 is installed on the extension of the existing first purlin 21.
[0030]
As described above, as shown in FIG. 1, the installation direction of the main building on the extension part side of the existing house is changed by approximately 90 °, and the new first main building 20 is arranged on the same plane as the existing first main building 21. The existing first purlin 21 is extended to the extension part side.
[0031]
Next, as shown in FIG. 1, the new second purlin 42 of the extension part is arranged on the same plane as the existing second purlin 43 of the existing house. Specifically, as shown in FIG. 11, a second purlin extension bracket 45 is fixed to a second purlin support bracket 44 installed in the vicinity of the connecting portion between the existing corner beam 3 and the existing eaves beam 4, and the second The new second purlin 42 is installed on the extension of the existing second purlin 43 by connecting the end 46 of the new second purlin 42 to the main purlin extension metal 45. The new second purlin 42 is a long wooden timber, and a through hole 47 is formed in the end 46 (see FIG. 15).
[0032]
The existing second purlin 43 has the same configuration as that of the existing eaves purlin 2 and the existing first purlin 21, and its end is located near the connection portion of the existing corner wooden beam 3 with the existing eaves beam 4 as shown in FIG. 11. By being fastened and fixed to the provided second purlin bracket 44 by the fasteners 8, it is installed on the second level of the existing eaves purlin 2 (see FIG. 1).
[0033]
As shown in FIG. 12, the second purlin bracket 44 includes a substantially hexagonal flat portion 48 having two edges that form approximately 90 ° with each other, and approximately 90 ° from the edges of each flat portion 48. It has a second purlin receiving part 50 that rises upward and has a through hole 49 formed in the upper end part. The second purlin support bracket 44 is fixed to the existing corner wooden beam 3 by welding, and the two second purlin support portions 50 of the second purlin support bracket 44 are symmetrical with respect to the long axis L of the existing corner wooden beam 3. It is provided on the upper surface of the existing corner wooden beam 3 so as to become.
[0034]
As shown in FIG. 11, the fixing of the existing second purlin 43 to the second purlin bracket 44 is such that the tip of the existing second purlin 43 substantially matches the tip of the existing second purlin 51 on the extension part side. In addition, the end portion of the existing second purlin 43 and the end portion of the existing second purlin 51 on the extension portion side are respectively mounted on the flat portion 48 of the second purlin bracket 44 and fastened to each second purlin receiving portion 50. This is done by fastening and fixing with the tool 8. Thereby, the existing second purlin 43 and the existing second purlin 51 on the extension part side are arranged on the existing corner wooden beam 3 at an angle of about 90 ° on the same plane.
[0035]
As shown in FIG. 13, the second purlin extension fitting 45 has the same configuration as the first purlin extension fitting 23 of the second embodiment, and a second purlin support in which a lid 52 and a through hole 53 are formed. A second purlin connection member 59 having a second purlin receiving connection member 55 having a connection portion 54, a second purlin connection portion 58 having a bottom portion 56 and a through-hole 57, an attachment portion 60, and a reinforcement portion 61 is formed by fixing the oblique side of the bottom portion 56, the edge of the second purlin connection portion 58, and the oblique side of the lid portion 52 to the surface of the attachment portion 60.
[0036]
The fixing of the second purlin extension fitting 45 to the second purlin support fitting 44 is the same as in the second embodiment, as shown in FIG. 14, and the second purlin extension fitting 45 has a second purlin receiving connection member 55. Is attached to the second purlin receiving portion 50 of the second purlin receiving bracket 44 from above, and the second purlin receiving connection portion 54 of the second purlin extension fitting 45 is fastened to the second purlin receiving portion 50 of the second purlin receiving bracket 44. This is done by fastening and fixing with a tool (not shown).
[0037]
At this time, the length of the bent portion of the second purlin support connection member 55 of the second purlin extension fitting 45 is changed from the appendage 60 when the second purlin extension fitting 45 is fixed to the second purlin support fitting 44 to the second. When the second purlin extension bracket 45 is fixed to the second purlin support bracket 44 when the distance to the edge facing the existing corner wooden beam 3 of the purlin receiver 50 is substantially equal, Since the second purlin support connecting member 55 is sandwiched between the attachment portion 60 and the reinforcing portion 61 of the second purlin extension fitting 45, the second purlin extension fitting 45 is stably installed on the second purlin support fitting 44. (See FIG. 15).
[0038]
Accordingly, as shown in FIG. 15, the bent portion 62 of the second purlin connecting member 59 of the second purlin extension fitting 45 is substantially flush with the bent portion 63 of the existing second purlin 43, and It is arranged on the extension line.
[0039]
The connection of the end 46 of the new second purlin 42 to the second purlin extension bracket 45 is performed as shown in FIG. 15, after the second purlin extension bracket 45 is fixed to the second purlin support bracket 44, the second purlin extension The end 46 of the new second purlin 42 is placed on the second purlin connection member 59 of the metal fitting 45, and the through hole 47 of the end 46 of the new second purlin 42 and the second purlin connection of the second purlin extension metal fitting 45 are connected. This is performed by fastening the through hole 57 of the portion 58 with the fastener 8. Accordingly, as shown in FIG. 11, the new second purlin 42 is installed on the extension of the existing second purlin 43.
[0040]
As described above, as shown in FIG. 1, 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 42 is arranged on the same plane as the existing second main building 43, that is, The existing second purlin 43 is extended to the extension part side.
[0041]
Next, as shown in FIG. 1, the new general purlin 64 of the extension part is arranged on the same plane as the existing general purlin 65 of the existing house. Specifically, as shown in FIG. 16, a general purlin extension metal fitting 67 is fixed to a general purlin bracket 66 installed on the existing corner wooden beam 3, and an end 68 of the new general purlin 64 is attached to the general purlin extension metal 67. To connect the new general purlin 64 on the extension of the existing general purlin 65. The new general purlin 64 is a long timber material, and a through hole 69 is formed in the end 68 (see FIG. 20).
[0042]
The existing general purlin 65 has the same configuration as the existing eaves purlin 2, the existing first purlin 21 and the existing second purlin 43, and as shown in FIG. By fastening and fixing to the metal fitting 66 with the fastener 8, it is installed in three or more steps of the existing eaves purlin 2 (see FIG. 1).
[0043]
As shown in FIG. 17, the general purlin bracket 66 has the same configuration as the second purlin bracket 44 of the third embodiment, and is a substantially hexagonal flat portion having two edges that form approximately 90 ° with each other. 70 and a general purlin receiving portion 72 that rises upward from the edge of each flat portion 70 at an angle of approximately 90 ° and has a through hole 71 formed at the upper end. The general purlin bracket 66 is fixed to the existing corner wooden beam 3 by welding so that the two general purlin receiving portions 72 of the general purlin bracket 66 are symmetrical with respect to the major axis L of the existing corner wooden beam 3. Are provided on the upper surface of the existing corner wooden beam 3.
[0044]
As shown in FIG. 16, the fixing of the existing general purlin 65 to the general purlin bracket 66 is similar to the third embodiment, and the end of the existing general purlin 65 and the end of the existing general purlin 73 on the extension portion side. Are placed on the flat part 70 of the general purlin bracket 66 and fastened to each general purlin receiver 72 with the fasteners 8 and fixed. Thereby, the existing general purlin 65 and the existing general purlin 73 on the extension part side are arranged on the existing corner wooden beam 3 at an angle of about 90 ° on the same plane.
[0045]
As shown in FIG. 18, the general purlin extension metal fitting 67 has a substantially trapezoidal general purlin receiving connection portion in which the oblique side forms an angle of about 45 ° with respect to the long side and the upper corner portion has a through hole 74 formed therein. 75, a substantially rectangular bottom 76, and an oblique side having a through-hole 77 formed in the upper corner of the long side with respect to the long side. A general purlin connection member 79 having a general trapezoidal general purlin connection portion 78 having an angle of approximately 45 °; and a reinforcing portion 80 fixed to an edge opposite to the oblique side of the general purlin receiving connection portion 75. The slant side of the general purlin receiving connection part 75 and the slant side of the general purlin connection part 78 are substantially matched and fixed.
[0046]
As shown in FIG. 19, the general purlin extension bracket 67 is fixed to the side surface of the flat portion 70 of the general purlin support portion 72 on the extension portion side of the general purlin bracket 66, as shown in FIG. 19. The general purlin receiving connection portion 75 is applied, and the general purlin receiving connection portion 75 of the general purlin extension metal fitting 67 is fastened and fixed to the general purlin receiving portion 72 of the general purlin receiving bracket 66 with a fastener (not shown). .
[0047]
At this time, when the length of the upper edge of the general purlin receiving connection portion 75 of the general purlin extension fitting 67 is fixed to the general purlin receiving fitting 67 to the general purlin receiving fitting 66, the hypotenuse of the general purlin receiving connection portion 75 is already present. If the length is in contact with the tip of the general purlin 65, the edge facing the existing corner wooden beam 3 of the general purlin receiving portion 72 of the general purlin receiving bracket 66 will be in contact with the reinforcing portion 80 of the general purlin extension metal fitting 67. Since the general purlin receiving connection portion 75 of the general purlin extension metal fitting 67 is sandwiched between the existing general purlin 65 and the reinforcing portion 80 of the general purlin extension metal fitting 67, the general purlin extension fitting 67 is replaced with the general purlin support fitting 66. It can be installed stably (see FIG. 20).
[0048]
Accordingly, as shown in FIG. 20, the bent portion 81 of the general purlin connecting member 79 of the general purlin extension fitting 67 is substantially flush with the bent portion 82 of the general purlin bracket 66 toward the existing general purlin 65. And it arrange | positions on the extension line.
[0049]
As shown in FIG. 20, the end 68 of the new general purlin 64 is connected to the general purlin extension bracket 67 after the general purlin extension bracket 67 is fixed to the general purlin support bracket 66 and then the general purlin of the general purlin extension bracket 67 is fixed. The end portion 68 of the new general purlin 64 is placed on the connection member 79, and the through hole 69 of the end portion 68 of the new general purlin 64 and the through hole 77 of the general purlin connection portion 78 of the general purlin extension metal fitting 67 are fastened. This is done by fastening at 8. Thereby, as shown in FIG. 16, the new general purlin 64 is installed on the extension of the existing general purlin 65.
[0050]
As described above, as shown in FIG. 1, the installation direction of the main building on the extension part side of the existing house is changed by approximately 90 °, and the new general main building 64 is arranged on the same plane as the existing general main building 65. The main building 65 is extended to the extension part side.
[0051]
Second, a new eaves beam will be added along the eaves on the side of the girder of the existing house. As shown in FIG. 21, in the first embodiment of the eaves-end beam, eaves-end beams 84 are installed on both sides of the existing truss 83 along the eaves of the side of the existing house. 25, it is necessary to install the orthogonal beam 85 in a direction substantially orthogonal to the eaves beam 84. In the procedure shown in FIG. 22, the truss eaves part 86 is pretreated and the web as shown in FIG. The eaves beam connection part 88 is positioned relative to the eaves side end of the adjacent truss 83 with the eaves beam connection part 88, the cross beam part 88, the orthogonal beam connection part 89, and the bottom part 90. This is performed by connecting both end portions of the eaves beam 84 to the eaves beam connection portions 88 that are arranged to face each other and face each other. This will be described in more detail below.
[0052]
When installing the eaves beam mounting bracket 91 at the end of the truss 83 on the eaves side, the truss eaves part 86 and the plate 92 provided at the end of the eaves side of the truss 83 are obstructive, so they are removed. A pretreatment step is required. FIG. 22 shows the procedure of this pretreatment process, and FIGS. 23 and 24 show the state after the work for each procedure.
[0053]
In the procedure 1, the truss eaves part 86 is excised. This is for facilitating the subsequent work by shortening the truss eaves portion 86 appropriately. Here, FIG. 23A shows a state before this procedure, and FIG. 23B shows a state after the procedure. In addition, as a tool used for a cutting | disconnection, a reciprocating saw (not shown) can be used, for example, and it is the same also about the cutting operation mentioned later.
[0054]
In step 2, in order to remove the plate 92 having a substantially inverted L-shaped cross section provided at the end of the truss 83 on the eaves side, facing the eaves end, the plate 92 and the truss 83 are aligned along the joint surface. In addition, the truss eaves portion 86 is cut in the vertical direction. At this time, it is easy to cut by avoiding the welded portion between the plate 92 and the truss 83 and cutting slightly inside the joint surface between the plate 92 and the truss 83. Here, FIG.23 (c) represents the state after the operation | work of this procedure.
[0055]
In procedure 3, the truss eave portion 86 is cut until the web 94 of the truss 83 is reached slightly on the eave end side from the tip of the C-shaped channel 93 of the truss 83. This is in order to remove a portion that hinders the installation of the eaves-end beam mounting bracket 91. Here, FIG. 23D shows a state after the operation of this procedure.
[0056]
In step 4, the plate 92 is separated from the truss 83 by cutting the lower portion of the plate 92 from the eaves side in the horizontal direction. Here, FIG. 24A shows a state after the operation of this procedure.
[0057]
In the procedure 5, for example, by polishing with a tool such as a sander (not shown), the remaining pieces of the plate 92 remaining in the lower portion of the truss 83 in the procedure 4 are removed. Thereby, there exists an advantage that the accommodation to the site | part of the eaves beam installation metal fitting 91 becomes good. Here, FIG. 24B shows a state after the operation of this procedure.
[0058]
In step 6, along the inclination of the web 94 of the truss 83 from the eaves side to the position cut in step 3, the joining surface of the truss 83 and the truss eaves part 86 is cut, and the eaves side part of the truss eaves part 86 is It has been removed. Here, FIG. 24C shows a state after the operation of this procedure.
[0059]
A pair of left and right web straddling portions 87 that rise in the vertical direction from the bottom portion 90 of the eaves beam installation metal fitting 91 shown in FIG. 25 are arranged substantially in parallel with an interval slightly wider than the thickness of the web 94 of the truss 83. . When installing the eaves beam installation fitting 91, as shown in FIGS. 26 and 27, the web straddling portion 87 straddles the end portion of the web 94 of the truss 83 subjected to the pretreatment as described above. The eaves beam installation metal fitting 91 is applied, and the eaves beam installation metal fitting 91 is pushed in until the end of the web 94 of the truss 83 on the eave edge side reaches the orthogonal beam connection part 89, and the through hole 95 provided in the web straddling part 87, and the bottom part A through hole 96 provided in 90 is fixed to the truss 83 and the shaft set 97 by bolting.
[0060]
The eaves beam connecting portions 88 projecting on both sides of the eaves beam installation metal fitting 91 form an angle of approximately 90 ° with both the web straddling portion 87 and the bottom portion 90. As shown in FIG. A web 98 of an eaves beam 84, which is an H-shaped steel, is brought into contact with the beam connection part 88, and is fixed by bolting in a through hole 99 provided in the eaves beam connection part 88. It is installed.
[0061]
The orthogonal beam connecting portion 89 is provided at an angle of approximately 90 ° with both the web straddling portion 87 and the bottom portion 90, and the eaves side surface is formed as a flat surface. Thereby, when the eaves end beam installation metal fitting 91 is installed, the flat surface of the orthogonal beam connecting portion 89 faces the eave end, and as shown in FIGS. 27 and 28, this flat surface is orthogonal to the H-shaped steel. The orthogonal beam 85 can be easily installed by joining one end portion of the beam 85 via the bonding plate 100 and fixing the beam 85 with a bolt in the through hole 101 provided in the orthogonal beam connection portion 89.
[0062]
In addition, when the extension beam 102 is extended on the eaves side, it is necessary to newly install the eaves beam 84 along the eaves on the side face of the existing house. In this case, the pre-processing of the truss eave portion 86, the arrangement of the eaves beam installation metal fitting 91, and the installation of the eaves beam 84 are performed in the same procedure as in the case of the installation of the orthogonal beam 85, and as shown in FIG. The base 103 of the lowered beam 102 may be joined to the beam connecting portion 89 and fixed by bolting.
[0063]
Next, as shown in FIG. 21, the second embodiment of the installation of the eaves-beams is to install an eaves-beam 84 on one side of the existing truss 83 along the eaves of the side of the existing house. FIG. 30 shows a case where the orthogonal beam 85 needs to be installed in a direction orthogonal to the eaves beam 84 on the extension part side, and the truss eaves part 86 is pre-processed in the same procedure as in the first embodiment. As shown in FIG. 30 (b), as shown in FIG. 30 (b), the web straddling portion 104, the eaves end beam connecting portion 105, the orthogonal beam connecting portion 106, and the eaves end beam installation metal fitting 108 having the bottom 107. An eaves beam connection fitting 105 having an eaves beam connecting portion 113, an eaves beam connection portion 110, an orthogonal beam connection portion 111, and a bottom portion 112 is connected to an eaves end beam connection portion 105 at an end portion on the eaves side of the adjacent truss 83. Alternatively, 110 are arranged opposite to each other, and opposite each other The eaves beam connecting portion 105 or 110 that is to perform by connecting the two ends of the eaves beam 84. This will be described in more detail below.
[0064]
The web straddling portion 104 and the web straddling portion 109 have the same shape as the web straddling portion 87 of the eaves end beam installation fitting 91 of the first embodiment, and the method of installing the truss 83 at the end portion on the eaves end side. Is the same as in the first embodiment.
[0065]
The eaves beam connecting portion 105 provided on the right side of the eaves beam installation metal fitting 108 forms an angle of approximately 90 ° with both the web straddle portion 104 and the bottom portion 107. As shown in FIG. A web 98 of an eaves beam 84 made of H-shaped steel is brought into contact with the connection part 105, and is fixed by bolting in a through hole 114 provided in the eaves beam connection part 105, thereby installing the eaves beam 84 along the eaves. is doing. Moreover, the eaves beam installation metal fitting 113 has the eaves beam connection part 110 in the left side part, The structure of the other than that and the connection method of the eaves beam installation metal 84 are the same as that of the eaves beam installation metal fitting 108. The two eaves beam installation metal fittings 108 and the eaves beam installation metal fittings 113 are preferably used in accordance with the positional relationship between the truss 83 and the newly added eaves beam installation metal 84.
[0066]
The orthogonal beam connection part 106 and the orthogonal beam connection part 111 have the same shape as the orthogonal beam connection part 89 of the eaves beam installation metal fitting 91 of the first embodiment, and by the same procedure as the first embodiment, The orthogonal beam 85 or the hanging beam 102 can be installed on the extension part side.
[0067]
In either case of the two embodiments described above, when the eaves beam 84 is installed, as shown in FIG. 32, between the truss 83 and the truss 83, between the truss 83 and the corner wooden beam 115, and between the truss 83 and the climbing beam 116, It is necessary to appropriately change the longitudinal dimension of the eaves beam 84 and the shape of the end depending on whether it is installed between the climbing beam 116 and the corner wooden beam 115. In particular, when there is an existing corner wood beam 115 on one end side of the eaves beam 84, the eaves beam 84 becomes the corner wood beam 115 by providing a corner wood beam connection beam 117 at the end of the eaves beam 84 on the corner wood beam 115 side. Preventing contact.
[0068]
As shown in FIG. 33, the corner beam connecting beam 117 is fixed to the vertical plate 118, the upper edge of the vertical plate 118, the upper surface plate 119 orthogonal to the vertical plate 118, and the lower edge of the vertical plate 118. A bottom plate 120 orthogonal to the vertical plate 118, a box part 121 having a substantially rectangular parallelepiped shape fixed on the bottom plate 120 and having a hollow inside, and a reinforcing plate 122 provided inside the box part 121. 35, end portions of the top plate 119, the bottom plate 120, and the vertical plate 118 are fixed to the eaves beam 84 through the joining plate 123, and provided on the bottom surface of the box 121. The through-hole 124 is fixed to the shaft set 97 with bolts.
[0069]
The upper surface plate 119 and the vertical plate 118 have a shape in which a part of a substantially rectangular flat plate is cut off obliquely. Thereby, the upper surface plate 119 and the vertical plate 118 are prevented from coming into contact with the corner wooden beam 115 extending from the diagonally upper side to the diagonally lower side of the corner wooden beam connecting beam 117.
[0070]
In the connecting portion between the corner wooden beam 115 and the corner wooden beam connecting beam 117, when it is necessary to extend and install the lowering beam 102 on the extension portion side, as shown in FIG. 34, on the side of the extension portion side of the box portion 121, What is necessary is just to join the base part 103 of the rolling-down beam 102, and fix by bolting in the through-hole 125 provided in the extension part side side surface of the box part 121. FIG. Further, when the hanging beam 102 is not connected, the side surface of the extension portion side of the box portion 121 does not need to be a flat surface, and the shape of the box portion 121 is not limited to a hollow, substantially rectangular parallelepiped, and other shapes. It doesn't matter.
[0071]
In addition, as shown in FIG. 32, when one end of the eaves beam 84 needs to be connected to the climbing beam 116, the existing climbing beam fitting 126 may be used for connection.
[0072]
Third, as shown in FIG. 36, the upper end portion of the new valley tree beam 127 installed along the valley portion generated at the boundary portion between the existing house and the extension portion is connected to the existing corner tree beam 128 of the existing house. This is to provide a new valley wooden beam 127 that rises from the entrance corner 129 to the existing house side at an angle substantially equal to the rising angle α of the existing corner wooden beam 128, and forms an angle of about 90 ° with the existing corner wooden beam 128. 37. A trough beam connecting bracket comprising a trough beam connecting member 130, a first ridge purlin receiving member 131, and an auxiliary member 132, as shown in FIG. 37, at the top end of a new trough beam 127 having a bottom end fixed to a corner 129. The trough beam mounting portion 134 of the trough beam connecting bracket 133 is fixed to the trough beam mounting portion 134 of 133, and forms an angle of approximately 90 ° with the trough beam mounting portion 134 and rises at an angle β substantially equal to the rising angle α of the existing corner beam 128 The new valley tree beam 127 is connected to the existing corner tree beam 128 by fixing 135 to the intermediate portion in the longitudinal direction of the existing corner tree beam 128. Furthermore, one end of the first building purlin 136 is fixed to the first purlin receiving member 131 of the valley beam connecting fitting 133, and the second building purlin receiving member 139 and the mounting member are attached to the standing portion 138 of the existing purlin receiving member 137. 140, the vertical member 141, and the auxiliary member 142 are fixed to the ridge purlin bracket 143, and one end of the second ridge purlin 144 is fixed to the second ridge purlin receiving member 139 of the ridge purlin bracket 143. ing.
[0073]
Here, as shown in FIG. 40, the existing corner wooden beam 128 shown in the present embodiment is obtained by fixing two C-shaped steels 145 by bolting so that their openings face each other. As shown in FIG. 4, the building is provided so as to be taken out in the direction of 45 ° from the end of the large building 146 of the existing house toward the exit corner 147 of the eaves. Also, the new valley wooden beam 127 has the same structure as the existing corner wooden beam 128.
[0074]
As shown in FIG. 37, the valley-beam connecting member 130 is formed by bending one plate having through holes 148 at both ends so as to form an angle of about 90 °, and twisting one of the plates. The corner wooden beam mounting portion 135 and the other side are the valley wooden beam mounting portion 134. Further, as shown in FIG. 40, notches 149 are provided at the end of the corner wooden beam mounting portion 135 on the valley wooden beam mounting portion 134 side, as shown in FIG. This prevents the valley beam mounting part 134 from coming into contact with the existing corner tree beam 128 when the corner tree beam mounting part 135 of the valley tree beam connection fitting 133 is mounted to the existing corner tree beam 128.
[0075]
The first building purlin receiving member 131 is formed by bending a single plate with a through-hole 150 formed at an angle of approximately 90 °, and the bent portion 151 is substantially horizontal. And, it is fixed on the valley beam attachment portion 134 of the valley beam connection fitting 133 so as to form an angle of about 45 ° with the valley beam attachment portion 134 of the valley beam connection member 130. As a result, as shown in FIG. 39, when the trough beam connecting fitting 133 is installed, the bent portion 151 becomes substantially parallel to the new large building 152, and the first building main building receiving member 131 is made of a wooden square. The first building main building 136 that is substantially parallel to the new large building 152 is newly installed on the top of the new large building 152 by placing one end of the single building main building 136 and fixing it by bolting.
[0076]
The auxiliary member 132 has a substantially triangular shape, and one side thereof is fixed to the side portion of the valley beam mounting portion 134 and the other side is fixed to the bottom surface of the first building main building receiving member 131. It plays a role of structurally reinforcing the metal fitting 133.
[0077]
When installing the valley beam connecting metal 133, as shown in FIGS. 39 and 40, the valley beam connecting part 134 of the valley beam connecting metal 133 is inserted into the gap formed between the two C-shaped steels 145 constituting the new valley beam 127. The corner wooden beam attachment portion 135 is brought into contact with the web 153 of the existing corner wooden beam 128 and fixed by bolting.
[0078]
As shown in FIG. 38, the ridge purlin bracket 143 has the second ridge purlin receiving member 139 fixed to one side surface of the vertical member 141 and a reinforcing plate 154 at the center on the other side surface of the vertical member 141. It is formed by fixing the mounting member 140 having it. Further, by fixing one side of the substantially trapezoidal auxiliary member 142 to the vertical member 141 and fixing the other two sides to the mounting member 140, the weakness of the fixing portion between the vertical member 141 and the mounting member 140 is reinforced. Yes.
[0079]
The attachment member 140 is formed by bending a single plate with a through-hole 155 in opposite directions at the first bent portion 156 and the second bent portion 157. Yes, it has a substantially S-shaped cross section. Here, the first bent portion 156 is bent so as to form an angle of 90 °. Thereby, it has a shape that substantially matches the bent portion 158 of the existing purlin bracket 137.
[0080]
The second ridge purlin receiving member 139 is formed by bending one plate having a through hole 159 at one end thereof at the third bending portion 160 so as to form an angle of approximately 90 °. The cross section has a substantially L-shaped shape. Here, the third bent portion 160 forms an angle of approximately 90 ° with the second bent portion 157 of the attachment member 140.
[0081]
When the ridge purlin bracket 143 is installed on the existing purlin bracket 137, as shown in FIGS. 39 and 41, the first bent portion 156 of the mounting member 140 and the bent portion of the existing purlin bracket 137 are provided. The attachment member 140 is applied from below the existing purlin bracket 137 so as to substantially match 158, and is fixed by bolting. As a result, the third bent portion 160 of the second building purlin receiving member 139 is approximately 90 ° with the bent portion 158 of the existing purlin receiving bracket 137, that is, substantially parallel to the new large building 152, and the second building purlin The second building main building 144 that is substantially parallel to the new large building 152 is placed on the top of the new large building 152 by placing one end of the second building main building 144, which is a wooden square, on the receiving member 139 and fixing it by bolting. 144 is newly installed. Thus, by installing the ridge purlin bracket 143 using the existing purlin bracket 137, compared with the case where the ridge purlin bracket 143 is directly installed on the existing corner beam 128, labor for opening the bolt holes is reduced. There is an advantage that can be reduced.
[0082]
In the present embodiment, the case where the first building main building 136 and the second building main building 144 are installed at positions substantially symmetrical to the new large building 152 at the top of the new large building 152 has been described. This form is not limited to this, and a single purlin (not shown) having a shape straddling the top of the new large building 152 may be installed. In this case, as in the present embodiment, the trough beam connection fitting 133 and the ridge purlin support bracket 143 are installed, and one side of the purlin is placed on the first ridge purlin support member 131 of the trough beam connection fitting 133. Then, the other side of the purlin is placed on the second ridge purlin receiving member 139 of the ridge purlin bracket 143 and fixed by bolting.
[0083]
【The invention's effect】
As described above, according to the method for extending a roof set according to claim 1, the existing house is not dismantled without completely dismantling the existing house and the existing main house is not removed. The orientation of the main building on the side of the extension can be changed by approximately 90 °, and the new main building can be placed on the same plane as the existing main building of the existing house. There is an advantage that the upper end part of the new valley wooden beam installed along the part can be connected to the middle part in the longitudinal direction of the existing corner wooden beam.
[0084]
Moreover, since the existing hut assembly 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.
[0085]
Furthermore, since each member is connected by fastening with a fastener, not only the workability can be improved, but also there is an advantage that sufficient safety can be ensured as compared with welding joining.
[0086]
Furthermore, since the existing cabin 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. .
[0087]
And the shortening of a construction period shortens the period which inconveniences a customer, and there exists an advantage that a customer's burden can be reduced.
[0088]
According to the extension construction method of a roof set according to claim 2, in addition to the above-mentioned effect, the eaves beam along the eaves of the existing house without completely dismantling the roof set, the back of the eaves, etc. of the existing house There is an advantage that can be newly installed.
[0089]
In addition, since it is not necessary to completely dismantle sheds and eaves of existing houses, labor can be saved and the construction period can be greatly shortened. Conventionally, it has been treated as industrial waste. There is an advantage that the cost required for processing can be reduced by eliminating unnecessary trusses generated during dismantling.
[Brief description of the drawings]
FIG. 1 is a plan view showing an outline of an entire cabin set according to an embodiment of the present invention.
FIG. 2 is a plan view showing an embodiment of an eaves purlin.
FIG. 3 is a perspective view showing an eaves purlin bracket and an eaves purlin extension bracket.
FIG. 4 is an explanatory view showing a procedure for fixing an eaves purlin extension bracket to an eaves purlin bracket.
FIG. 5 is an explanatory diagram showing a procedure for connecting a new eaves purlin to an eaves purlin extension fitting.
FIG. 6 is a plan view showing an embodiment of a first purlin.
FIG. 7 is a plan view showing a first purlin bracket.
FIG. 8 is a perspective view showing a first purlin extension fitting.
FIG. 9 is an explanatory view showing a procedure for fixing the first purlin extension bracket to the first purlin bracket.
FIG. 10 is an explanatory view showing a procedure for connecting the new first purlin to the first purlin extension fitting.
FIG. 11 is a plan view showing an embodiment of a second purlin.
FIG. 12 is a plan view showing a second purlin bracket.
FIG. 13 is a perspective view showing a second purlin extension fitting.
FIG. 14 is an explanatory view showing a procedure for fixing the second purlin extension bracket to the second purlin support bracket;
FIG. 15 is an explanatory diagram showing a procedure for connecting the new second purlin to the second purlin extension fitting.
FIG. 16 is a plan view showing an embodiment of a general purlin.
FIG. 17 is a plan view showing a general purlin bracket.
FIG. 18 is a perspective view showing a general purlin extension fitting.
FIG. 19 is an explanatory diagram showing a procedure for fixing the general purlin extension bracket to the general purlin bracket.
FIG. 20 is an explanatory diagram showing a procedure for connecting a new general purlin to a general purlin extension fitting.
FIG. 21 is a diagram showing roof covering of a roof set according to an embodiment of installation of eaves-end beams.
FIG. 22 is an explanatory diagram for explaining a flow of pre-processing for the truss eaves part according to the first embodiment of eaves eaves beam installation;
FIG. 23 is an explanatory diagram for explaining pre-processing for the truss eaves part according to the first embodiment of eaves eaves beam installation for each procedure;
FIG. 24 is an explanatory diagram for explaining pre-processing for the truss eaves part according to the first embodiment of eaves eaves beam installation for each procedure;
FIG. 25 is a schematic perspective view of the eaves beam installation metal fitting according to the first embodiment of eaves beam installation.
FIG. 26 is a schematic perspective view for explaining an installation method of the eaves beam installation metal fitting according to the first embodiment of installation of the eaves beam.
FIG. 27 is a schematic side view showing an installation state of the eaves beam installation metal fitting according to the first embodiment of installation of the eaves beam.
FIG. 28 is a schematic plan view showing a connecting portion between the eaves beam installation fitting and the eaves beam according to the first embodiment of the installation of the eaves beam.
FIG. 29 is a schematic side view showing a connecting portion between an eaves-end beam installation bracket and a hanging beam according to the first embodiment of eaves-end beam installation.
FIG. 30 is a schematic perspective view of an eaves beam installation fitting according to a second embodiment of eaves beam installation.
FIG. 31 is a schematic plan view showing a connecting portion between an eaves beam installation fitting and an eaves beam according to a second embodiment of installation of the eaves beam.
FIG. 32 is a schematic plan view for explaining a connection portion between the truss, the corner beam, the climbing beam, and the eaves beam according to the embodiment of the eaves beam installation.
FIG. 33 is a schematic perspective view of a corner wooden beam connecting beam.
FIG. 34 is a schematic plan view showing a joint portion between a corner-timber beam joint beam and a hanging beam according to an embodiment of the present invention.
FIG. 35 is a schematic perspective view showing a joint portion between a corner wooden beam and a corner wooden beam according to the embodiment of the present invention.
FIG. 36 is a diagram showing roofing of a cabin set according to an embodiment of connection of a new valley wooden beam to an existing corner wooden beam.
FIG. 37 is a schematic perspective view of a valley beam connecting metal fitting.
FIG. 38 is a schematic perspective view of a ridge purlin bracket.
FIG. 39 is a schematic plan view showing the installation state of the valley beam connecting metal fittings and the ridge purlin receiving metal fittings.
FIG. 40 is a schematic side view showing a connection portion between a new valley wooden beam and an existing corner wooden beam.
FIG. 41 is a schematic side view for explaining a state where the ridge purlin bracket is attached to the existing purlin bracket.
[Explanation of symbols]
1 New eaves purlin
2 Existing eaves purlin
3 Existing corner wooden beams
4 Existing eaves beams
20 New first purlin
21 Existing first purlin
42 New second purlin
43 Existing second purlin
64 New general purlin
65 Existing general purlin
83 truss
84 eaves
127 New Valley Tree Beam

Claims (2)

A part of the girder face of the existing house in the dormitory structure, a part of the existing hut assembly of the existing house and a part of the new hut assembly of the extension part are substantially flush with the height of the existing part of the existing house It is an extension construction method of the hut assembly in the extension work when extending below the ridge height,
A purlin extension fitting having a purlin receiving connection portion installed on a purlin receiving bracket installed on an existing corner wooden beam located at the boundary between the existing house and the extension portion, and a purlin connecting portion forming approximately 90 ° with the purlin receiving connection portion. Use, fixing the purlin support connection to the purlin bracket, and installing the new purlin of the extension on the extension of the existing purlin installed on the purlin bracket, The installation direction is changed by approximately 90 °, and the new purlin of the extension part is arranged on substantially the same plane as the existing purlin,
At the upper end of a new trough beam installed along the trough that occurs at the boundary between the existing house and the extension, the trough beam mounting portion of the trough beam connecting bracket is fixed, forming an angle of approximately 90 ° with the trough beam mounting portion, and existing An extension construction method for a cabin set, wherein a corner beam mounting portion of the valley beam connecting bracket , which rises at an angle substantially equal to a rising angle of a corner beam, is fixed to a longitudinal intermediate portion of the existing corner beam. Cut off the truss eaves on the side of the spar of the existing house, at the eaves side end of the adjacent truss, the web straddling part straddling the web of the truss, and the eaves projecting perpendicularly from the web striding part The eaves beam installation brackets having the beam connection parts are respectively arranged with the eaves beam connection parts facing each other, and the opposite ends of the eaves beam are connected to these opposite eaves beam connection parts, thereby The extension construction method for a cabin set according to claim 1, wherein a new eaves beam is added along the eaves on the side surface of the girder.

Images