JP2001152561A - Installation method of roof truss, and joint metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installation method of a roof truss and a joint metal fitting to facilitate the carry-out/carry-in work, and facilitate the installation on a pole plate. SOLUTION: In the installation method in which the roof truss 10 comprising a pair of top chords 18 arranged at a predetermined pitch of roof, bottom chords 19 with both ends thereof respectively joined with a pair of the top chords 18 which are arranged therebelow, diagonals 20 and 21 which are interposed between the top chords 18 and the bottom chords 19 to from a plurality of triangles together therewith, are placed above the pole plate 11, the roof truss 10 is carried in a two-split condition by a division line 22 passing through a joining part 25 of the top chords 18 and a joining part 26 of the bottom chords 19, the two-split roof truss 10 is integratedly joined with each other using joint elements 28 and 29 covering the division line 22 and respectively fitted to the joining part 25 of the top chords 18 and the joining part 26 of the bottom chords 19, and lifted, and placed above the pole plate 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a truss member for placing a truss member above a eaves beam provided in a building, and to a metal fitting for the truss member.

[0002]

2. Description of the Related Art A hut structure is a frame structure provided below a roof to support the roof. For example, the hut structure is mounted on an eave girder material provided in a building by a frame structure method. It will be installed along the roof slope with the eaves girder supporting it. As shown in FIG. 5, the hut set 50 includes a pair of eaves girders 5 arranged in parallel with each other.
A horizontal member 52 such as a hut beam, a bamboo beam, or the like is erected between them, a plurality of bundle members 53 are erected on the horizontal member 52, and a purlin, a purlin 54, a rafter 55, and the like are arranged on the bundle member 53. In general, the roof material 56 is attached to the upper surface of the hut set 50.

On the other hand, a trussed truss member composed of a number of rod-shaped members assembled in a truss shape in which a plurality of triangles are connected is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-2 filed by the present applicant.
No. 36745. According to such a trussed truss member, basically each bar-shaped member is pin-connected to each other, and has a structure for supporting a load by a compressive force and a tensile force in the axial direction. Therefore, it is possible to form the hut assembly while reducing the member cross section of each bar-shaped member to achieve economy.

Since such a trussed truss member requires a lot of time and labor to assemble at a construction site, it is generally assembled in advance in a factory or the like into a predetermined truss shape using a large number of rod-like members, and this is assembled at the construction site. The method of carrying in, mounting on eaves girder material and mounting is adopted.

[0005] However, the truss truss member is a member having a considerable width of, for example, 7 to 8 m or more so that it can be placed over a pair of eaves girder members. And carrying-in work is difficult, and handling at the construction site is inconvenient. Therefore, there is a problem that the assembled truss truss member is easily damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and a truss member truss member capable of facilitating a carrying work and a carrying-in work, and enabling an installation work on an eaves girder material to be easily performed. It is an object of the present invention to provide a method of installing a truss member and a metal joint for a truss member.

[0007]

According to the present invention, there is provided a pair of upper chords which are arranged at a predetermined roof inclination and which are joined to each other at upper ends thereof, and both ends of which are joined to the pair of upper chords, respectively. A truss truss comprising a lower chord material disposed below the upper chord material and a diagonal member interposed between the upper chord material and the lower chord material and forming a plurality of triangles with the upper chord material and the lower chord material. A method for installing a trussed member for placing a member above an eaves girder material provided in a building,
The shed truss member is carried in a state where it is divided into two by a dividing line passing through a joint at the upper end of the upper chord and a joint at the middle part of the lower chord, and the divided shed truss is And joining and integrating the joining members of the upper chord material and the joining portions of the lower chord material by covering the parting line, and lifting the integrated shed truss member, The above object has been achieved by providing a method for installing a trussed member truss member, which is mounted above the truss member.
Described invention).

Further, in the installation method according to the present invention, the lower chord member is disposed under the pair of upper chord members so as to be inclined at a gentler gradient than the roof gradient, and one ends thereof are joined to each other at an upper end portion. It is preferable that the other end is constituted by a pair of lower chord members joined to the upper chord member, respectively, and the dividing line passes through a joint at an upper end portion of the lower chord member. .

Further, in the installation method according to the present invention, it is preferable that the joining bracket is attached so as to cover the dividing line from both front and back surfaces of the truss member (the invention according to claim 3).

Still further, in the installation method according to the present invention, a vertical bundle member is interposed between a joint at an upper end portion of the upper chord member and a joint portion at an intermediate portion of the lower chord member, and the dividing line corresponds to the vertical bundle. When the halved truss member divided into two is joined and integrated through the center of the member, it is preferable that a metal fitting is attached to an intermediate portion of the vertical bundle member so as to cover the dividing line (Claim 4). Invention).

On the other hand, the present invention provides a first flat metal fitting which is attached to the joint of the upper chord material so as to cover the dividing line, and a flat metal material which is attached to the joint of the lower chord material so as to cover the dividing line. And a stopper metal having a U-shaped cross section which is fixed to an intermediate portion of the vertical bundle member so as to cover the dividing line, and wherein the first metal member and the second metal member are numerous. The above object has been achieved by providing a metal joint having the above-mentioned nail hole (the invention according to claim 5).

Preferably, in the metal joint according to the present invention, the plurality of nail holes are formed asymmetrically on both sides of the dividing line, respectively (the invention according to claim 6).

[0013] Further, the joint metal of the present invention may be a straight line or a corner which serves as a positioning guide portion when the two divided truss members are joined and integrated with the first joint metal and the second joint metal. Is preferably formed on the periphery thereof (the invention according to claim 7).

[0014]

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. According to the present embodiment, for example, a roof truss member, which is a component member of a roof group that is placed on an eave girder material of a building by a wooden frame construction method, has a roof attached to the upper surface, and supports the roof, is provided with an eave girder. The method of installation according to the present invention is employed when attaching to a material.

As shown in FIG. 1, the hut group 12 has a frame structure composed of a large number of rod-like members, and is provided at both ends of a pair of gantry members 11 arranged in parallel with each other. Is a pair of end frame panels 14 erected on a pair of horizontal members 13 erected in the vertical direction, and between the end frame panels 14, for example, 45 to 45 in the extension direction of the eave girder material 11. It is composed of a plurality of trussed truss members 10 arranged in parallel at a pitch of about 100 cm. Each of the plurality of truss truss members 10 is attached to the eave girder member 11 by the installation method of the present invention.

That is, in the method of installing the truss member 10 according to the present embodiment, a pair of upper chord members 18 which are arranged to be inclined at a predetermined roof gradient and whose upper ends are joined to each other, A lower chord member 19 joined to the pair of upper chord members 18 and disposed below the upper chord member 18,
A first diagonal member 2 interposed between the upper chord member 18 and the lower chord member 19 and forming a plurality of triangles with the upper chord member 18 and the lower chord member 19
Shed truss member 10 composed of zero and second diagonal member 21
Is installed above the eaves girder material 11 provided in the building.

In the installation method of this embodiment, as shown in FIG. 2, the shed truss member 10 passes through the joint 25 at the upper end of the upper chord 18 and the joint 26 at the middle of the lower chord 19. As a unit truss member 40 divided into two by the dividing line 22 (see FIG.
As shown in (a) and (b), the pair of left and right unit truss members 40 are joined to the joint 2 of the upper chord material 18 by covering the dividing line 22.
5 and the first chord attached to the joint 26 of the lower chord material 19, respectively.
Using the joint hardware 28 and the second joint hardware 29, the integrated truss member 10 is lifted by joining and integrating,
It is configured by being placed above the eaves girder material 11.

Also, according to the present embodiment, the lower chord material 19
A pair of lower chord members arranged below the pair of upper chord members 18 and inclined at a gentler slope than the roof slope, and having one end joined to each other at the upper end and the other end joined to the upper chord 18 respectively. The dividing line 22 traverses the upper ends of the pair of lower chord members 19 ′, 19 ′ as a joining portion 26 at an intermediate portion of the lower chord member 19.

Further, according to the present embodiment, the first metal joint 28 and the second metal joint 29 are formed by the truss member 10
Is attached so as to cover the dividing line 22 from both the front and back surfaces.

Furthermore, according to the present embodiment, the joint 25 at the upper end of the upper chord member 18 and the lower chord member 19 ',
Between the joint 26 at the upper end of the 19 '
7 are interposed. And the dividing line 22 is
Of the vertical bundle member 27, the vertical bundle member 27 is divided into two parts, and when the pair of left and right unit truss members 40 are joined and integrated, the vertical bundle member 27 is tightly integrated along the division line 22. After that, the metal fitting 42 is attached to the middle part of the vertical bundle member 27 so as to cover the dividing line 22.

According to the present embodiment, the upper end of the upper chord member 18 is joined to the upper chord member 18 and the lower end of the upper chord member 18 is joined to the eave girder member 11. A supplementary column 16 that is installed and holds the truss member truss member 10 in a state of being lifted upward from the eaves girder 11, and is interposed between the joint of the upper chord member 18 and the lower chord member 19 and the lower end of the supplementary column 16 Then, a supplemental diagonal member 24 that forms a triangle with the supplementary column 16 and the upper chord member 18 is attached (see FIG. 2).

According to this embodiment, the unit truss members 40 constituting the trussed truss member 10 are each manufactured in advance at a factory or the like. That is, the upper chord member 18, the lower chord member 19 ′, the first diagonal member 20, the second diagonal member 21, the two-piece vertical bundle member 27, the supplementary column 16, and the supplemental diagonal member 24, which are rod-shaped members, are used as joining means. Nail plate 30
By jointing and fixing these ends and the like to each other, the unit truss member 40 having a truss structure having a plurality of triangles is formed. In addition, the upper chord material 18,
The lower chord member 19 ′, the first diagonal member 20, the second diagonal member 21, the vertical bundle member 27, the supplementary column 16, and the supplementary diagonal member 24 can be used in a state where a plurality of plate members are stacked.

Here, the upper chord material 18 is 38 × 184 mm
Is a bar-shaped plate member having a rectangular cross section, and the upper end surface is notched obliquely, so that when the end surfaces are brought into close contact with each other to form the joint portion 25, a pair of upper chord members 18 are formed. Are integrated into a mountain shape with a roof gradient of, for example, 10: 6.

The lower chord member 19 'is a rod-shaped plate member having a rectangular cross section of 38.times.89 mm, and has an upper end face cut off obliquely so that the end faces are brought into close contact with each other to form a joint. When the structure 26 is formed, the lower chord material 19 composed of a pair of lower chord members 19 ′ is integrated into a mountain shape with a roof gradient of, for example, 10: 6. The lower chord material 19
Are arranged in a state where the lower chord is horizontally disposed by being arranged at a gentler gradient than the roof chord of the upper chord 18 so as to protrude upward toward the inside of the upper chord 18. In comparison, the attic space is enlarged by the amount of the upward convex.

The first diagonal member 20 and the second diagonal member 21 are 38 ×
A rod-shaped plate member having a rectangular cross section of 89 mm,
One end of the diagonal member 20 has a lower chord member 19 ′ and a vertical bundle member 27.
The other end is joined to the joint between the upper chord member 18 and the second diagonal member 21, and the one end of the second diagonal member 21 is joined to the joint part between the upper chord member 18 and the first diagonal member 20. And the other end is the lower chord member 1
By being joined to the intermediate portion of 9 ', a plurality of triangles having the joints as vertices are formed together with the upper chord material 18 and the lower chord member 19'.

The supplementary column 16 is a bar-shaped plate member having a rectangular cross section of 38 × 140 mm, and the upper end thereof is an upper chord material 18.
In a state of being in close contact with the lower side surface, the upper chord member 18 is joined to a side end portion thereof, and the lower end thereof is joined to the eave girder member 11 in a state of being placed in close contact with the upper surface of the eave girder member 11. Eaves girder 1 with the truss member 10 raised upward
1 and is vertically arranged above.

The supplemental diagonal member 24 is a bar-shaped plate member having a rectangular cross section of 38 × 89 mm, one end of which is the upper chord member 18.
And the other end of the supplementary column 16
10:15 by being joined to the lower end of
Are arranged diagonally at an inclination of. And form a triangle with the supplementary column 16 and the upper chord 18. As a result, the unit truss member 40 has a truss structure that is entirely stable including the supplementary columns 16 and the supplemental diagonal members 24.

The unit truss member 40 manufactured in advance in a factory or the like is transported and carried into the building site of the building, joined and integrated to assemble into the truss member 10 having a caesar strass shape. Eave girder material 1
1 above. As shown in FIGS. 3A and 3B, the work of joining and integrating the pair of unit truss members 40 is a first plate-like joining that is attached to the joining portion 25 of the upper chord member 18 so as to cover the dividing line 22. A metal member 28, a flat plate-shaped second metal member 29 covering the dividing line 22 and attached to the joint portion 26 of the lower chord member 19 ', Using a metal joint formed of the U-shaped stopper metal member 42, it is quickly and easily performed as follows.

That is, first, the unit truss member 4 carried in
0, lay it down and align it, then close the vertical bundle 2
7 so that the metal fittings 42 can be fitted from the back side.
Is attached, and nails are driven into a plurality of nail holes 44 formed in both side portions 43 of the metal fitting 42 to fix the metal fitting 42 to the intermediate portion of the vertical bundle member 27. After that, upper chord material 1
The first metal fitting 28 or the second metal fitting 29 is attached to the bonding part 25 of No. 8 and the bonding part 26 of the lower chord member 19 ′.

The first metal fitting 28 has a thickness of, for example, 2.3.
A plate member made of a zinc iron plate having a thickness of up to 4.5 mm, and as shown in FIGS.
8 has an octagonal shape large enough to integrally cover the lower half portion of the joining portion 25 and the upper end portion of the vertical bundle member 27 joined to the joining portion 25, and the lower corner portion of the octagonal side. Reference numeral 45 is formed so as to coincide with the lower side of the upper chord material 18, and constitutes a guide portion when aligning the unit truss member 40. Also, a large number of nail holes 46 are formed in advance in the first metal joint 28, and nails are driven into each of the nail holes 46, thereby securing a nail interval and avoiding forgetting to nail. The first metal fitting 28 can be easily and firmly fixed to the joint 25 while the rigidity of the joint 25 is sufficiently secured. Furthermore, a large number of formed nail holes 46 are formed asymmetrically on both sides of a symmetric axis 47 that coincides with the dividing line 22, so that a pair of first metal fittings 28 can be connected to the front and back surfaces of the bonding portion 25. The nails driven into the nail holes 46 do not collide with each other even when they are attached to the nail.

The second metal joint 29 is also a plate member made of a zinc-iron plate having a thickness of, for example, 2.3 to 4.5 mm, and as shown in FIGS. 3B and 4B, the lower chord. It has a tail fin shape large enough to integrally cover the joint part 26 of the member 19 ′ and the lower end part of the vertical bundle member 27 joined to the joint part 26, and the inclined sides 48 on both sides of the lower end of the tail fin shape, It is formed so as to coincide with the lower side of the lower chord member 19 ′, and constitutes a guide portion when aligning the unit truss member 40. Also, the second metal fitting 2
9, a large number of nail holes 49 are formed in advance, and by driving nails into the nail holes 49, the rigidity of the joint portion 26 is ensured while securing the interval between the nails and avoiding forgetting to strike the nails. The second metal fitting 29 can be easily and firmly fixed to the bonding portion 26 in a state in which is sufficiently secured.
Further, a large number of nail holes 49 are formed asymmetrically on both sides of the symmetric axis 37 which coincides with the dividing line 22, so that the pair of second metal fittings 29 can be connected to both surfaces of the bonding part 26. The nails driven into the nail holes 49 do not collide with each other.

After the first metal fitting 28 or the second metal fitting 29 is attached to the trussed truss member 10 composed of the pair of unit truss members 40, the trussed member 10 is turned upside down and the joints 25 and 26 are attached to the front side. By attaching the first metal fitting 28 or the second metal fitting 29 from the back side in the same manner as described above, the truss member 10 that is firmly joined and integrated can be obtained. That is, the joint 25 and the lower chord member 1 of the upper chord material 18 to which the bending load is intensively applied during the lifting operation or when the roof is installed above.
The joint 26 of 9 'is effectively reinforced by the first metal fitting 28 or the second metal fitting 29, and the strong truss member 10 can be obtained quickly and easily. In order to attach the first metal joint 28 and the second metal joint 29 so as to cover the dividing line 22 from both the front and back surfaces of the truss-assembled truss member 10, a pair of unit truss members are attached by attaching the stopper metal 42 to the vertical bundle member 27. After temporarily fixing the first metal fitting 40, the first metal fitting 28 and the second metal fitting 29 may be attached from both sides.

The shed truss members 10 integrated in this manner are each lifted by, for example, a crane, and are placed at predetermined positions above the eaves girder member 11, and together with the end frame panel 14 and the like. And a hut group 12 for supporting the roof. The integrated shed truss member 10 includes:
A lifting hook or the like may be attached in advance so that the lifting operation by the crane becomes easy. Also, a trussed truss member 1 installed on an eave girder material 11
On the outer side of the supplementary column 16 of “0”, a leg anti-slip 17 is installed and supported between the two end frame panels 14 along the eaves girder 11 and above the eaves girder 11 (FIG. 1). reference). The leg stoppers may be disposed inside the supplementary column or between the supplementary columns.

According to the present embodiment, the trussed truss member 10 is composed of a pair of unit truss members 40 manufactured in advance in a factory or the like, and these are joined together at a building site of a building using a predetermined joining hardware. Since it is integrated and attached to the eaves girder material 11, it is easy to carry and carry in the work, and it is possible to easily perform the installation work on the eaves girder material 11.

Further, according to this embodiment, since the truss member 10 has a truss structure, it can stably support the roof load with an inexpensive configuration, and the lower chord member 19 can be moved upward. The truss body 22 is formed using the trussed truss member 10 because the truss body 22 is held upward by the supplementary columns 16 and the supplemental diagonal members 24 from the eaves girder material 11. Hut set 12
Can easily secure a sufficient attic space.

The present invention can be variously modified without being limited to the above embodiment. For example, the shed truss member divided into two is not necessarily required to have a Caesar strass shape, and the lower chord material does not necessarily need to be provided so as to be convex upward. The truss truss member is not necessarily required to be symmetrical, and the vertical member is not necessarily required. Further, the first metal joint and the second metal joint do not necessarily need to be attached to both front and back surfaces of the truss member.

[0037]

As described in detail above, according to the method for installing a truss member and the metal fittings of the truss member of the present invention, the carrying work and the carrying-in work can be facilitated and the eaves girder material can be easily mounted. Installation work can be performed easily.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a hut group formed by installing a truss member truss member by an installation method according to an embodiment of the present invention.

FIG. 2 is a front view showing a trussed truss member according to an embodiment of the present invention.

FIGS. 3A and 3B are front views showing a situation in which a pair of unit truss members are integrated into a truss truss member.

FIG. 4A is an enlarged front view of a first metal joint, and FIG. 4B is an enlarged front view of a second metal joint.

FIG. 5 is a front view showing a configuration of a conventional hut group.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Hut group truss member 11 Eave girder member 12 Hut group 16 Supplementary column 18 Upper chord material 19 Lower chord material 19 'Lower chord member 20 First diagonal material 21 Second diagonal material 22 Dividing line 24 Supplemental diagonal material 25 Joining of upper end of upper chord material Part 26 Joining part at upper end of lower chord member 27 Vertical bundle member 28 First joining hardware 29 Second joining hardware 37, 47 Symmetry axis (parting line) 40 Unit truss member 42 Brace metal fittings 44, 46, 49 Nail hole 45 Angle Part (guide part) 48 Inclined side (guide part)

Claims (7)

[Claims] 1. A pair of upper chords which are arranged at a predetermined roof slope and whose upper end portions are joined to each other, and both ends are respectively joined to the pair of upper chords and arranged below the upper chord. A trussed truss member comprising a lower chord material to be provided and a diagonal member interposed between the upper chord material and the lower chord material and forming a plurality of triangles with the upper chord material and the lower chord material is provided in the building. A method of installing a truss truss member for mounting above an eaves beam, wherein the truss truss member passes through a joint at an upper end of the upper chord and a joint at an intermediate portion of the lower chord. The truss member which is divided into two by the dividing line is carried in, and the halved truss members are joined by using metal fittings which cover the dividing line and are respectively attached to the joint portion of the upper chord material and the joint portion of the lower chord material. Before joining and joining A method of setting up a truss member that includes a truss member, wherein the truss member is lifted and placed above the eaves girder member. 2. The lower chord member is disposed below the pair of upper chord members and is inclined at a gentler gradient than the roof slope, and one end is joined to an upper end portion and the other end is the upper chord member. 2. The method according to claim 1, wherein the pair of lower chord members are joined to each other, and the dividing line passes through a joint at an upper end of the lower chord member. 3. 3. The method of installing a trussed truss member according to claim 1, wherein the joining fitting is attached so as to cover the dividing line from both front and back surfaces of the trussed truss member. 4. A vertical bundle member is interposed between a joint at an upper end portion of the upper chord member and a joint portion at an intermediate portion of the lower chord member, wherein the dividing line passes through the center of the vertical bundle member, 4. The method according to claim 1, wherein, when joining the two divided shed truss members together, a stopper metal is attached to an intermediate portion of the vertical bundle member so as to cover the dividing line. The installation method of the truss member described in the above description. 5. A metal joint used in the method for installing a truss member according to claim 4, wherein the metal plate is a first metal plate that covers the parting line and is attached to a joint of the upper chord member. A plate-shaped second metal fitting covering the dividing line and attached to the joint of the lower chord material, and a U-shaped cross-section metal fitting covering the dividing line and fixed to an intermediate portion of the vertical bundle member Wherein the first metal fitting and the second metal fitting have a large number of nail holes. 6. The metal joint according to claim 5, wherein the plurality of nail holes are formed asymmetrically on both sides of the dividing line. 7. A straight line or a corner serving as a positioning guide portion for joining and integrating a split truss member with two halves is formed on the peripheral edge of the first metal joint and the second metal joint. The metal joint according to claim 5, wherein the metal joint is formed.