JPS603846Y2 - Double wooden arch truss - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rigid support structure for a double wooden arch truss which is used as the basic structure of the roof of a wooden building, particularly a livestock barn.

Since the double wooden arch truss disclosed in Utility Model Application Publication No. 53-91313, the present applicant has provided various double wooden arch trusses with various improvements.

When a wooden arch truss is used as a roof frame,
It has become a problem that strong lateral loads (lateral pressure) are applied to the sides of the main pillars that connect to the ends of the arch trusses due to earthquakes and wind pressure. Sufficient strength is required for supporting structures such as columns.

In this case, main pillars with a sufficiently large diameter were prepared to take into account the horizontal shaking caused by typhoons and earthquakes, but it was not only difficult to obtain these main pillars, but also caused high costs, so some countermeasures were needed. was desired.

Therefore, the present invention was provided in order to eliminate the above-mentioned drawbacks, and provides a diagonal column in which both ends of the double wooden arch truss are arranged to form a V-shape between the main columns. At the same time, a reinforcing bone opposing the lower laminated arch material is interposed between the main column and the diagonal column to create a rigid structure, increasing the strength against lateral loads on the side of the main column, and creating a double wooden arch truss. The aim is to provide sturdy livestock barns, etc.

The present invention will be described in detail below based on an illustrative embodiment.

The double wooden arch truss 1 consists of an upper laminated arch material 2 which is formed by laminating boards 4 to form an arch shape, and a lower laminated arch material 3 formed by laminating the boards 4 in the same way as the upper laminated arch material 2. , a bundle column 5 is placed between both laminated arch materials 2 and 3.
A triangular frame consisting of a cane and a cane 6 is arranged, and a tightening rod 7 is passed through both the laminated arch materials 2 and 3 and the bundle post 5 and tightened with a nut to make both the laminated arch materials 2 and 3 into an integrated structure, The structure is such that each unit plate material 4 is prevented from peeling off due to restoring force, lateral load, etc.

At that time, the cores of the bundle pillars 5 and the above-mentioned cane 6 are both laminated materials 2 and 3.
They are arranged so as to coincide with the core at a common intersection point, and anti-slip rods 8, 8 are installed between both ends of the bundle pillars and the rod 6 to increase stress strength.

The arch truss 1 has an upper laminated arch material 2 longer than a lower laminated arch material 3 to form an eaves section 2 at both ends thereof, and has main columns on the lower surface of the upper laminated arch material 2 and the end surface of the lower laminated arch material 3. Fixing pillars 9 are fixedly installed, and the side surfaces of the main pillars 10 are attached to the side surfaces of the pillars 9. At the same time, the lower surface of the upper laminated arch material 2 is supported via the eave girder 29 (shown in FIG. 2), and the other side is As shown in the figure, the lower surface of the eave part 2' of the upper laminated arch material 2 is supported at the top of the diagonal column 11 which has a V-shape between the main column 10 and the lower laminated column 11 between the main column 10 and the diagonal column 11. Arch material 3
At least one reinforcing bone 12 is interposed therebetween as shown in FIG. 2 to form a rigid structure.

The main pillar 10 is joined to the lower end of the diagonal pillar 11 by a joint means, supported on a common bundle stone 13 through a base, and the joined part is held together with the base by a metal fitting 14 and secured with bolts 15. It is intended to be integrated with the diagonal column 11.

It is desirable that the reinforcing bone 12 is placed on the outside of the main column 10, where the lateral pressure P1 is concentrated, and the optimal location is to place it on the extension of the center line of the lower laminated arch material 3, so that it is not attached to the main column 10. The configuration is such that the opposing force P2 is most effectively generated by the diagonal pillars 11 and the reinforcing bones 12 against the lateral pressure P1, and the joint portion between the main pillars 10 and the arch material 3 is surely reinforced.

A battledore metal plate 16 passing through the main pillar 10 and the support pillar 9 is attached to the reinforcing bone 12 and the lower surface of the lower laminated arch material 3 to integrate them.

Although not shown, the main pillar 10 can be directly attached to the end face of the lower laminated arch material 3 without using the supporting pillars 9, and the eave girder 2
It is also possible to directly support the lower surface of the upper laminated arch material 2 without using the support 9.

Regardless of the presence or absence of the supporting columns 9, the above-mentioned rigid support structure acts effectively against lateral loads.

Figure 3 shows the main pillar 1 in addition to the reinforcing bones 12 arranged in Figure 2.
A plurality of reinforcing bones 12 are arranged between the main pillar 1 and the main pillar 11, and a cane 17 is arranged between the reinforcing bones 12 to form a triangular frame.
0 and the diagonal pillar 11 are strengthened.

In addition, Fig. 3 shows that the diagonal pillar 11 is replaced by the main pillar 1 for the same purpose as above.
This figure shows the case where the rigid support structure of the double wooden arch truss is constructed by placing it inside the double wooden arch truss.

Since the arch material 3 is not perpendicular to the diagonal pillar 11 but is joined obliquely, there is an advantage that lateral pressure is absorbed in the axial direction of the diagonal pillar.

In this case as well, the reinforcing bone 12 is preferably arranged on an extension of the center line of the lower laminated arch material 3.

FIGS. 1, 4, and 5 show an embodiment in which the joint structure of the double wooden arch truss and columns according to the present invention is used in a livestock barn.

In the figure, reference numeral 18 denotes a pole attached to the lower laminated arch material 3 with metal fittings 19.The pole 18 is provided with a hook 20 to attach one end of a string 21 equipped with a turn baffle 22, and to partition the other end of the string 21. The partition door 2 is attached to the opening/closing end of the door 23 and the tension string 21 is stretched, and the hinge is attached to the pole 18.
The structure was designed to support 3.

In addition, a hoisting machine 24 for a wire 25 is fixed to the pole 18,
The side wall 26 suspended by the wire 25 can be opened and closed up and down.

To be more specific, the side wall 26 is arranged in a step-like manner and includes a plurality of unit wall plates 26a, 26b, . At the bottom thereof, as the wire 26 is wound up, a unit wall plate 2
L-shaped support members 27 are fixedly installed to sequentially support the lower surfaces of each unit wall plate 26a, 26b.
, . . . have a configuration in which the left and right ends are guided by guides 28 provided between the main pillars 11 and 11 to move up and down smoothly, making it convenient for grazing livestock, sunbathing, disposal of excrement, etc.

Therefore, in the present invention, both ends of the double wooden arch truss are supported by the main pillar and the diagonal pillar, and reinforcing bones that oppose the lower laminated arch material are interposed between the main pillar and the diagonal pillar. We can provide a rigid joint structure that provides robustness against the lateral shaking of livestock barns caused by earthquakes and wind pressure, making it possible to construct large livestock barns using the arch truss of the Oharima structure. The reinforced and small-diameter main pillars provide sufficient strength, allowing for effective use of wood.

In addition, the reinforcing bone further strengthens the integral structure of the main pillar and oblique pillar, and evenly distributes the lateral pressure to the main pillar.

[Brief explanation of the drawing]

The drawings show an example of the double wooden arch truss according to the present invention, and Fig. 1 is a front view showing the structure of a livestock barn using the arch truss, and Figs. 2 and 3 show the structure of the arch truss and columns. FIG. 4 is an enlarged side view of the side wall structure of the barn, and FIG. 5 is a plan view of the same. 1...Double wooden arch truss, 2...
Upper laminated arch material, 3...lower laminated arch material,
8... Anti-slip cane, 9... Support pillar, 1
0...Main pillar, 11...Curved oblique pillar, 12...
・Reinforced bone, 17...Hojo.

Claims (2)

[Scope of utility model registration request] (1) A double arch truss is formed by an upper laminated arch material and a lower laminated arch material formed by laminating board materials, and both ends of the double wooden arch truss are connected to the main pillars with a V
A double wooden arch truss, characterized in that it is supported by diagonal pillars exhibiting a letter shape, and that reinforcing bones opposing the lower laminated arch material are interposed between the main pillars and the diagonal pillars to provide rigidity against lateral loads. (2) The double wooden arch truss according to item 1, characterized in that the reinforcing bones are provided on an extension line of the lower laminated arch material.