JP2000110294A - Building roof structure - Google Patents

Abstract

(57) [Summary] (Modified) [PROBLEMS] To provide a simplified roof joint structure between a roof truss and a corner block, and a ridge roof structure having a simple reinforcement structure for the roof truss. SOLUTION: At a top portion 31 of a girder roof truss 26 formed of a channel steel, a truss top joint metal piece 8a for joining between the left and right upper chord members 5 is brought into contact with a web back surface of left and right upper chord members 5. , Upper chord material 5 and truss top joint hardware 8
The two members are joined by a fixing bracket 25 such as a bolt that penetrates a. On the other hand, at the upper end of the corner block 16 formed of the channel steel, reinforcement of the same cross-sectional shape as the corner block 16 is provided on the back of the web of the left and right corner blocks 16. The back surface of the web of the corner block 27 is contacted with a joining plate 28 projecting from the upper end of each corner block sandwiched therebetween, and the members are joined by a fixing bracket 25 penetrating the contact section. Abuts on the truss top joint metal piece 8a and joins the two members with a fixing bracket, and the inclined plate 32 of the corner joint metal piece 29 and the joint plate 28 of the corner piece 16
And the two members are joined with the fixing bracket 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a roof structure of a building, and more particularly to a girder roof truss in a steel house.
The present invention relates to a roof structure of a building characterized by a joint structure with a corner block and a reinforcing structure of a roof truss.

[0002]

2. Description of the Related Art In a steel house, a thickness of 0.5 mm to 0.5 mm is required.
A channel steel formed by roll forming a thin steel plate having a thickness of about 2.3 mm is used as a frame material, and the frame materials are connected to each other with fixing brackets to form a building frame. In the steel house mentioned above,
There are still points to be improved in the reinforcement structure and joining structure of the wing roof.

[0005] Referring to FIGS. 5 and 6, the ridge roof shown in each figure is separately developed by the present inventor (now unpublished application). The parts are shown. In the figure, a channel steel made of a thin steel plate is used for each member, and two sets of eaves beams 1 and 2 which are in parallel with each other are formed in a rectangular shape. Each eave girder 1, 2 is attached to the upper end of a plurality of pillars 3 (shown in FIG. 7) for mounting the wall of the building. The figure shows a girder roof truss 6 located at an end of an isosceles triangle formed by a lower chord member 4 and two upper chord members 5.

[0004] 2 where eaves 1 and 2 arranged in two directions intersect
From the eaves corner 15 to the top 1 of the girder roof truss 6
A single-piece corner block 16 is erected to extend to 1 and an inclined frame of a ridge roof is constructed.

[0005]

The above-mentioned roof structure has problems in securing the strength of the roof truss and in ensuring the workability and accuracy in the joint structure between the girder roof truss and the corner block. An object of the present invention is to provide a roof structure that solves these problems.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a triangular girder roof truss which is located at the end in the end direction and is composed of a lower chord material and an upper chord material; And a rafter erected on the roof structure, wherein a ridge is constructed, and at the top of the girder roof truss formed of channel steel, the left and right upper chords are provided on the web back surfaces of the left and right upper chord materials. The truss top joints that join between the members are brought into contact with each other, and the two members are joined together by fixing brackets such as bolts that penetrate the upper chord members and the joints. A web back of a reinforcing corner block having the same cross-sectional shape as the corner block is disposed on the web back sides of the left and right corner blocks with a joining plate interposed therebetween so that one end thereof protrudes from the end of the corner block, and the contact portion thereof is provided. Each member is joined by a fixture that penetrates The center part of the corner joint is brought into contact with the truss top joint and the two members are joined with a fixing bracket, and the bent part of the corner joint and the joint plate projecting from the end of the corner are brought into contact to fix both members. It is characterized by a structure joined by metal fittings. Further, the present invention is characterized in that, instead of the corner piece, a corner truss upper chord having the same cross-sectional shape as the corner piece is joined to the truss top joint metal corner piece with the same joining structure as the corner piece. The present invention also relates to a roof structure which is located at the end in the direction of the wife and is constructed of a triangular roof truss composed of lower chord material and upper chord material, a corner bar, an eave girder, and a rafter erected on these. At the top of the roof truss formed of channel steel, the web back of the reinforcing upper chord having the same cross-sectional shape as the upper chord is placed on the web back of the left and right upper chords, and between the left and right upper chords. The truss top joining metal fitting to be connected is sandwiched and abutted, and the above members are joined by a fixing metal fitting penetrating this joining part.

According to the first and second aspects of the present invention, the corner block is reinforced by a reinforcing corner block having the same cross-sectional shape as that of the corner block, and a bolt or the like is connected via a joint plate, a corner joint joint, and a truss top joint joint. The girder roof truss and the corner block can be joined easily by on-site installation with the fixing brackets. According to the third aspect of the present invention, the upper chord of the girder roof truss (the same applies to other king post roof trusses) is reinforced by back-to-back joining with a reinforcing chord having the same cross-sectional shape as that of the truss without changing the others at all. it can.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a frame structure of a wife part of a ridge roof as a first embodiment, and include any one of a chord member 5, a corner piece 16 and a bundle member 12 of a girder roof truss 26 located at an end in the wife direction. Are also made of channel steel made of thin steel plate. At the top 31 of the girder roof truss 26,
The truss top joint metal piece 8a that joins between the left and right upper chord members 5 abuts on the web 20 back surface of the left and right upper chord members 5,
Both members are joined by a fixing bracket 25 such as a bolt penetrating the upper chord member 5 and the top joint metal piece 8a.

In addition, at the upper end of the corner block 16 formed of the channel steel, the web 20 of the reinforcing corner block 27 having the same cross-sectional shape as the corner block 16 is provided on the back of the web 20 of the left and right corner blocks 16.
The back surface is abutted with a joining plate 28 protruding from the upper end of the corner block 16 and each member is joined by a fixing bracket 25 penetrating the contact portion, and the contact surface 30 of the corner joint joint 29 is connected to the truss. The two members and the bundle member 12 are joined by a fixture 25 such as a bolt in contact with the top joint metal piece 8a, and the bent part 32 of the corner joint metal piece 29 and the joint plate 28 of the corner piece 16 are in contact with each other. The space is joined with a fixing bracket 25 such as a bolt.

According to the roof structure of the first embodiment, the corner 1
A joint plate 28 is attached to the reinforcement 6 and the reinforcing corner 27 in advance.
And the truss top joint metal piece 8a are joined by a fixing bracket 25 such as a bolt which is easy to be installed on site, and at the same time, the bundle member 1
2 is also joined, so that the construction is remarkably simplified as compared with the related art.

FIGS. 3 and 4 show a frame structure of a wife part of a ridge roof according to a second embodiment. In the second embodiment, in the girder roof truss 26, the back of the web 20 of the reinforcing upper chord 33 having the same cross-sectional shape as the upper chord 5 is attached to the back of the web 20 of the left and right upper chord 5 by the left and right upper chords. The truss top joints 8a connecting the members 5 are in contact with each other, and both upper chords 5 and the truss top joints 8 are connected to each other.
The above members are joined by a fixing bracket 25 such as a bolt that penetrates a. Further, the back surface of the web 20 of the reinforcing lower chord material 34 having the same cross-sectional shape as the lower chord material 4 abuts on the back surface of the web 20 of the lower chord material 4 with the joining hardware 8 connecting the lower chord material 4 therebetween. Each member is joined by a fixing bracket 25 such as a bolt penetrating the lower chord member 4 and the truss top joint metal piece 8a.

According to the second embodiment, a reinforcing upper chord 33 having the same cross-sectional shape abuts against the back of the web of the upper chord 5 of the girder roof truss 26 via the truss top joint metal fitting 8a. Since it is reinforced by joining at 25, the girder roof truss 26 does not increase the cross section of the upper chord 5 and the girder roof truss is symmetrical and is not eccentric through the center axis in the width direction.
Reinforced while maintaining balance. In addition, this reinforcement structure
Although the girder roof truss 26 has been described, the same applies to king post roof trusses.

[0013]

As described above, according to the first and second aspects of the present invention, in the ridge part of the ridge roof, a corner steel made of channel steel and a reinforcing corner wood having the same cross-sectional shape as this are used. In the field work, the joint plate protruding from the upper end of each corner block and the corner block joint block are fixed with fixing brackets such as bolts, and the contact surface of the corner block joint block is fixed. Can be applied to the side of the truss top joint hardware that joins the left and right upper chord members and the bundle member of the roof truss, and can be joined using fixing brackets such as bolts. In addition, it is possible to greatly improve the construction accuracy and shorten the construction time.

According to the third aspect of the present invention, a reinforcing chord having the same cross-sectional shape is joined to the back of the upper chord of the roof truss made of the channel steel by back-to-back with the truss top joint metal fitting therebetween. And, since the upper chord is reinforced by being connected via fixing members such as bolts, the problem of an increase in the cross section of the channel steel and the problem of eccentricity do not occur as in the conventional case, and basically there is no change in any other components. There is an effect that reinforcement can be easily dealt with simply by adding the same member as the upper chord material and further increasing the thickness of the joint hardware as needed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing a structure for joining a corner truss at the top of a roof truss according to a first embodiment of the present invention.

FIG. 2 is a front view shown by an arrow A in FIG.

FIG. 3 is a cross-sectional view illustrating a reinforcing structure of a roof truss according to a second embodiment.

FIG. 4 is a cross-sectional plan view showing a structure for connecting a corner truss at the top of a roof truss according to a second embodiment.

FIG. 5 is a perspective view of a first construction step when constructing a ridge roof.

FIG. 6 is a perspective view of a second step.

FIG. 7 is a front view of a girder roof truss.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 girder 2 girder 3 pillar 4 lower chord material 5 upper chord material 6 garter roof truss 7 ridge connection 8 joining hardware 8a truss top joining hardware 10 drill screw 11 top 12 bundle member 13 lattice material 14 ceiling joist 15 eaves corner 16 corner wood 17 rafter REFERENCE SIGNS LIST 18 lower corner chord material 19 bolt 20 web 21 first contact surface 22 second contact surface 23 intermediate contact surface 24 corner joint metal 25 fixing bracket 26 girder roof truss 27 reinforcing corner 28 joint plate 29 corner joint 30 central part 31 Top 32 Folding 33 Upper chord for reinforcement 34 Lower chord for reinforcement

Claims (3)

[Claims] 1. A ridge is constructed by a triangular girder roof truss, which is located at the end in the direction of the wife and is composed of lower chord and upper chord, a corner bar, an eave girder, and a rafter erected on these. In the roof structure, at the top of the girder roof truss formed of channel steel, the truss top joint metal fitting between the left and right upper chords is brought into contact with the web back surface of the left and right upper chords, and The two members are joined by a fixing fitting that penetrates the upper chord material and the truss top joint fitting, and at the end of the corner formed by the channel steel, the reinforcement of the same cross-sectional shape as the corner is provided on the back of the web on the left and right corners. The back of the web
The joint plate is disposed so that one end thereof protrudes from the end of the corner block, and each member is joined by a fixing bracket penetrating the contact portion, and the center of the corner joint joint is joined to the truss top section. A structure in which both members abut against a metal and are joined with a fixing metal, and a bent portion of the corner joint metal and a joint plate protruding from an end of the corner wood are abutted to join both members with a fixing metal. Roof structure of building. 2. The building according to claim 1, wherein, instead of the corner block, a truss top chord having the same cross-sectional shape as the corner block is joined to the truss top joint with the same joint structure as the corner block. Roof structure. 3. A roof structure which is located at the end in the direction of the wife and is constructed of a triangular roof truss composed of lower chord material and upper chord material, a corner bar, an eaves girder, and a rafter erected on these. hand,
At the top of the roof truss formed of the channel steel, the web back of the reinforcing upper chord having the same cross-sectional shape as the upper chord is connected to the web back of the left and right upper chords between the left and right upper chords. A roof structure of a building in which a truss top joint metal piece is sandwiched and abutted, and the above members are joined by a fixing metal which penetrates the abutting part.