JPH0363617B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a method of deforming a large roof chevron having an extremely simple structure that can prevent deformation strain in a direction substantially orthogonal to the longitudinal direction of the roof large chevron. Regarding prevention devices.

[Conventional technology and issues]

Conventionally, large-scale (approximately 1 m to approximately 1.5 m in height) chevron-shaped roofing materials with long spans (approximately 10 meters to approximately several tens of meters in length) that were researched and developed by the applicant have been produced in factories.
These are transported to the site, lifted one by one onto the structure or foundation there by a large crane, etc., and placed and fixed across the opposing beams or foundations at the top of the structure. The roof is made of large chevron-shaped roofing materials arranged in parallel and tied together, and has a simple structure with no beams or the like, and the roof itself is the structure. Recently, large-scale chevron roofs of the so-called mansard type (see Figure 6), which have a stronger construction by installing large chevron-shaped roof members in a roughly symmetrical chevron shape through flanges, have recently become popular. has been done. However, at the same time as the large chevron of the roof at the top is installed at the site, both slopes of the chevron are deformed inward from each other as shown by the dotted line in Figure 4 or the dotted line in Figure 5. As a result, even though they were installed side by side, there were gaps, making it impossible to connect the large chevrons of adjacent roofs in an orderly manner. The inward deformation of the inclined portions is particularly high at the joint between the ridges of the large chevron members of both roofs, where a large amount of self-weight is applied, that is, between the bottom portions of the flange attachment points. This is because the cross-sectional shape is chevron-shaped, the roof's large chevrons are long and heavy, and the roof's large chevrons are connected to each other through flanges so that they are almost symmetrical. This is because the formation of a mountain shape acts synergistically, and a large tensile stress acts on the bottom part of the slope part of the ridge part.

For this reason, even if the cross section of the force bones etc. is enlarged,
It has been difficult to reliably prevent such deformation distortion. Furthermore, it is also possible to increase the thickness of the board, but in this case, even if there is no need to increase the strength against vertical loads, the thickness of the board will be increased just to prevent deformation, and this will improve the roof. Existing bender equipment for bending the outer sheathing material that makes up large angle-shaped timbers cannot be used, and a larger one must be installed, or various attachments may need to be attached to it due to changes in board thickness. Since the dimensions of the members change slightly, it is necessary to change the attached members appropriately each time they are used, resulting in drawbacks such as an increase in the product price of large angle-shaped members.
In addition, after the large-sized chevrons for the roof are constructed on site,
Since this deforms due to its own weight, etc., large-sized jacks, etc. are required to eliminate this deformation, which makes the construction equipment complicated and troublesome, and there is a major drawback that the deformation distortion cannot be completely eliminated. It was hot.

[Means to solve the problem]

Therefore, in order to solve the above problem, the inventor has made extensive research and has developed the invention by connecting large chevron roof members with long spans of the same cross-sectional shape in series in the longitudinal direction. By fixing unit beams oriented in a direction approximately perpendicular to the longitudinal direction between the bottoms of the ridge portion formed in a chevron shape without applying any deflection due to their own weight, the large chevron beams for the roof can be It is possible to prevent deformation distortion in a direction substantially perpendicular to the longitudinal direction, and furthermore, the structure can be made extremely simple and inexpensive, thus solving the above-mentioned problems and achieving the object.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

FIG. 1, FIG. 2, etc. show embodiments of the present invention, and A
is a large chevron-shaped material for the roof, which is made of metal and has a trapezoidal chevron-shaped cross section, with sloped edges formed outward and upward from the bottom of the lower ends on both sides, and with a long span (approximately 10-odd meters to several tens of meters). , the height of the entire cross section is approximately 1 m to
It is formed to have a length of 1.5 m and a width of about 2 m, and a plurality of reinforcing bones 2 are fixed to the back surface of the outer skin material 1 of the large chevron-shaped roof member A at appropriate intervals in the longitudinal direction. L-shaped metal fittings 3, 3 are fixed to both ends of the force bone 2, respectively.

Flanges 4 and 5 are provided at both longitudinal ends of the roof large angle-shaped member A, and a plurality of bolt holes are bored in the flanges 4 and 5. Further, on the back side of the outer skin material 1, heat insulating materials, lighting equipment mounting materials, air conditioning related mounting materials, etc. are previously attached at the factory, but these are omitted in the drawings. The roof portion large-sized chevron members A, A are assembled symmetrically into a chevron shape, and between the bottom portions 1a, 1a of the ridge portions of both roof portion large-sized chevron members A, A, there is a On the other hand, a unit beam member 6 facing in a substantially perpendicular direction is fixed in a state where it is not deflected by its own weight. In the embodiment, one of the large-sized roof chevrons A is tilted onto the center pedestal 7 and the side mounts 8 by a crane, as shown on the right side of FIG. As shown on the left side of Fig. 1, the adjacent large-sized angle-shaped roof members A connected in series are being lifted up by a crane, and the opposing flanges 4, 4 of the adjacent large-sized roof angle-shaped members A, A are bolted together.・
The bolts and nuts are temporarily tightened, and then the other side (the left side in the figure) of the large roof chevron member A is lowered, and the large roof chevron member A is placed on the side frame 8 in an inclined manner, where the bolts and nuts are tightened. are securely tightened and fixed, and the large chevron members A, A of both roof parts are assembled symmetrically into a chevron shape, and the large chevron members A, A of both roof parts are attached to the center pedestal 7, side pedestal 8, etc. The structure is such that the large angle-shaped roof member A does not bend due to its own weight.

In the embodiment, the mounting structure of the unit beam member 6 is as follows:
Lower flanges 9, 9 are provided, to which mounting plates 10, 10 are vertically installed, and vertical wing pieces 6a, 6a provided on the upper side of the outer periphery on both sides of the unit beam member 6 are attached to the bottom of the ridge portion. They are fixed to the mounting plates 10, 10 of 1a, 1a, respectively, with bolts and nuts. Further, vertical wing pieces 6a are provided on the lower side of the outer periphery of both ends of the unit beam member 6.
However, horizontal wing pieces 6b, 6b are fixed to the left and right sides, respectively.

Large chevron members A for both roofs configured as above,
A is placed on the wall large-sized chevrons B, which have the same cross-sectional shape as the roof large-sized chevron A, which are erected facing each other,
After these are repeated and installed in parallel, the ends of the unit beam members 6, 6 adjacent in the installation direction are brought into a substantially abutted shape, and a connecting plate 11 is attached to the vertical wing pieces 6a, 6a and the horizontal wing pieces 6b, 6b. , 11 are polymerized and fixed via bolts and nuts, and these steps are repeated to form beams of a large-sized chevron roof, and in this way, a mansard-shaped large-scale chevron roof is constructed.

Also, the large chevron A of the roof has become long,
When it comes to extremely large and heavy objects, the unit beam members 6 may be provided at both ends of the roof large angle-shaped members A, A, and at intermediate locations between the roof parts and the ridge parts as necessary, as shown by the dotted lines in Figure 1. There is also.

In the figure, reference numeral 12 denotes a tie bar, and both ends of the tie bar are fixed to connecting brackets attached to the appropriate reinforcement bones 2, 2 of the large angle-shaped members A, A of the roof. 13
Reference numeral 14 indicates a foundation or lower wall, 14 indicates a pin sieve, and 15 indicates a decorative board provided on the back side of the large-sized chevron-shaped material A for the roof and the large-sized chevron-shaped material B for the wall.

〔Effect of the invention〕

In the present invention, between the two bottom portions 1a, 1a of the ridge portion, the roof portion large-sized chevron members A, A having the same cross-sectional shape and long span are connected in series in the longitudinal direction to form a substantially bilaterally symmetrical chevron shape. By fixing the unit beam member 6, which faces in a direction substantially perpendicular to the longitudinal direction thereof, without applying any bending action due to its own weight, the first
Second, deformation strain in a direction substantially perpendicular to the longitudinal direction due to the own weight of the roof portion large angle-shaped member A can be prevented, and second, this structure is extremely simple, easy to install, and can be made at low cost.

To explain these effects in detail, in the present invention, the roof portion large-sized chevron-shaped members A, A are connected in series in the longitudinal direction to form a substantially bilaterally symmetrical chevron-shaped portion. By fixing the unit beam 6 that faces in a direction substantially perpendicular to the longitudinal direction without applying any deflection due to its own weight, both ends of the unit beam 6 compress the vicinity of the lower ends of both slopes of the chevron. It is possible to prevent the occurrence of compressive deformation strain in a direction substantially perpendicular to the longitudinal direction of the roof portion large angle-shaped member A by supporting it under stress and using an extremely simple device. Therefore, in the past, the roof part large chevron material A at the top of the large chevron roof of the mansard type (see Figure 6) was used.
At the same time as it is installed on site, due to the weight of the large chevron member A on the roof, both slopes of the chevron part, especially the bottom of the ridge part, will be inside each other as shown by the dotted line in Figure 4 or the dotted line in Figure 5. Deformation strain or, in severe cases, destruction may occur on one side, and for this reason, there is a gap between the adjacent roof parts A and A.
However, all of the above-mentioned drawbacks can be solved simply by attaching the unit beam members 6 without increasing the section modulus of the transverse bones or thickening the plate thickness.

Furthermore, even with these great features,
Unit beam material 6 in a state where no deflection due to its own weight is applied.
By fixing it, no internal stress is applied during connection construction, and there is no need for jacks, etc., and it is just a matter of installation, making it extremely easy to install on site, etc., and can be installed simply and quickly.
Furthermore, there is an advantage that a device for preventing deformation of the large angle-shaped roof member A can be provided at a low cost.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Fig. 1 is a side view showing the assembly and construction state of the present invention, Fig. 2 is a perspective view of the main part of the invention, Fig. 3 is an enlarged perspective view of the main part of the invention, and Fig. 4 is a large angle-shaped roof member. FIG. 5 is a cross-sectional view showing the state of deformation due to its own weight; FIG. 6 is a schematic diagram of a large-scale chevron roof constructed using the present invention; FIG. FIG. 8 is a perspective view of a connecting portion member of unit beam members, and FIG. 9 is a sectional view of a portion where unit beam members are connected. A...Large chevron member for the roof, 1a...Bottom, 6...
...Unit beam material.

Claims (1)

[Claims] 1. A large chevron roof member with the same cross-sectional shape and long span is connected in series in the longitudinal direction to form a substantially symmetrical chevron shape, between the vicinity of both bottoms of the ridge part, approximately perpendicular to the longitudinal direction. A device for preventing deformation of a large chevron-shaped roof part, characterized in that unit beam members facing in the same direction are fixed in a state where they are not deflected by their own weight.