JPH0751813B2 - Roof structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a roof structure, and more particularly to a roof structure in which a plurality of suspension strips and a plurality of holding strips are installed so as to cross each other in a net shape.

《Prior art》 Recently, as a roof structure of a large span structure without columns inside, NIKKEI ARCHITECTURE 173 (April 23, 1984 issue)
Alternatively, as shown in Japanese Patent Laid-Open No. 60-258376, tension is applied to one or both of the upper and lower cables crossed in a grid pattern, and the cable is erected, and a roof finishing material is mounted on the cable. A cable net roof has been proposed.

The roof of this structure uses the cable tension, so
Compared with the conventional truss type roof structure, it is said that the whole weight is lighter and it can be applied to a roof with a large span.

However, the above-mentioned cable net structure roof has the following problems.

<< Problems to be solved by the invention >> That is, at the intersection of the cables, it is necessary to lock the upper and lower cables, but since the cables normally used in this type of roof structure have a circular cross section, The intersecting point is a contact between the curved surfaces, and it is difficult to firmly bond them unless a specially prepared bonding tool such as a U bolt is used.

Also, when attaching a roof finishing material such as thin steel plate to the cable, it cannot be directly attached to the cable,
There is also a problem that a separate member must be interposed to support the finishing material, which complicates the mounting structure and also increases the weight of the roof.

Furthermore, in a normal roof structure, the same amount of stress does not act on one cable at any place, and the required stress differs depending on the place. Therefore, if the cross-sectional diameter of the cable is changed according to the stress, the material will be less wasted and it will be most economical, but since the cable cannot be easily joined to such an economical design, only a small stress is actually required Even if there is a place where it does not, it is inevitable to use a thick cable for a place that requires a large stress.

The present invention has been made in view of such conventional problems, and an object thereof is to easily connect members for introducing tension to each other and to easily attach a roof finishing material, and It is an object of the present invention to provide a roof structure that enables one of the tension introducing materials to be used also as a roof finishing material, and that can easily cope with a design corresponding to stress.

<< Means for Solving the Problems >> In order to achieve the above-mentioned object, the present invention provides a plurality of suspension strips that are installed at a predetermined interval, and is disposed on the upper surface side of the suspension strips that intersects with the suspension strips. It consists of multiple presser strips,
A roof structure in which tension is introduced into the suspension strips by tensioning the strips, and the strips are composed of wide thin plates, and the longitudinal direction of the strips adjacent to each other. Along with each other to form a roof finishing material adjacent to each other, and each one of the suspension strips according to the tension generated differently for each part corresponding to each pressing strip. The cross-sectional area of each portion is set to a value at which the stresses acting on the respective portions are substantially equal.

<< Operation >> According to the roof structure having the above-described configuration, the intersecting portions of the suspension strips and the holding strips are in surface contact with each other, so that they can be easily joined by, for example, bolt connection or spot welding.

Further, since the pressing strips are formed as wide thin plates and are closely arranged, the pressing strips can also serve as the roof finishing material.

Furthermore, when changing the cross-sectional area of each one suspension strip plate in the middle to correspond to the stress required in each part,
By joining and connecting strip members with different widths and thicknesses by welding, bolt fastening, etc., it is possible to easily obtain a lightweight suspension strip with a cross section that corresponds to the stress required at each part and that is lean. .

<Example> Hereinafter, a preferred example of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show an embodiment of a roof structure according to the present invention.

As shown in FIG. 1 as a whole, the roof structure shown in FIG. 1 is applied to a horse-saddle-shaped roof that covers the outer peripheral wall 10 of an oval-shaped building structure. At the upper end of the outer peripheral wall 10, an outer peripheral frame 12 is formed along the shape thereof.
Is provided.

FIG. 2 is a cross-sectional view of the main part of FIG. 1, in which the roof is a suspension strip 14 erected in the left-right direction of the outer peripheral frame 12 and a suspension strip.
Presser strip 16 installed so as to be orthogonal to the upper surface of 14
And the intersections are connected by spot welding or bolt connection.

The suspension strip 14 has a width of about 100 mm in this embodiment,
A flat metal plate (iron plate, stainless steel plate, aluminum plate) commonly referred to as a flat bar having a thickness of 9 to 12 mm is used.
The outer peripheral frame 12 is spaced from the outer peripheral frame 12 at a predetermined interval so as to be parallel to each other, and both ends of the outer peripheral frame 12 are connected by bolts.
Installed on.

The holding strip plate 16 is a wide thin plate which is wider and thinner than the hanging strip plate 14 of the flat bar, and the thin plate is closely arranged and also serves as a roof finishing material. Also,
Each pressing strip 16 is bent at its both ends in the longitudinal direction upward so as to have a substantially concave cross section and closely adheres to each other, and the bent portions 16a are welded or joined by a stopper to prevent rainwater from entering. At the same time, it has strength and rigidity in the lateral direction. In this case, the holding strip plate 16 may be formed in a flat plate shape, and end portions in the longitudinal direction of the holding strip plate 16 may be overlapped with each other and joined together.

To erection the roof with the above configuration, first, suspending strips 14,14
.. is fixed between the outer perimeter frames 12, and then the presser strips 16, 16 are arranged so as to be substantially orthogonal to this, and the intersections are joined by spot welding or the like.

Then, while tightening the ends of the presser strips 16, 16, ..., both ends are fixed to the outer frame 12 by bolting. As a result, the suspension strips 14, 14, ... Are pushed downward, so that tension is also introduced into the suspension strips 14.

When the tension is introduced as described above, as shown schematically in FIG. 3, the suspension strips 14, 14 ...
Tension against each other, and presser strips 16 and 16 against upward load.
The tension of …… opposes and the stability of the roof structure is secured.
At this time, different tensions are generated in each of the suspension strips 14 at the portions corresponding to the pressing strips 16.

By the way, as shown in FIGS. 4 and 5, each of the suspension strips 14 has its cross-sectional area in the middle thereof changed depending on the stress required at each portion. In other words, as described above, different tensions are generated in each of the suspension strips 14 corresponding to the respective holding strips 16, but the tensions act on the respective portions in accordance with the tensions of the respective portions. The cross-sectional area of each part is set to a value at which the stresses are substantially equal.

Here, in changing the cross-sectional area of each of the suspension strips 14 in the middle thereof, for example, strip plate members having different widths and thicknesses may be joined by welding, bolt fastening, etc. It is possible to easily form the hanging strip 14 having a different cross-sectional area for each portion corresponding to the holding strip 16. That is, FIG. 4 (a) shows a place where two kinds of strip plate members 14 'having different widths corresponding to the stresses required in the above respective parts are butted and welded together, and FIG. 4 (b) is shown by bolting. It shows the case of connecting and connecting, and both can be easily connected and the weight can be reduced.

Now, in the roof structure configured as described above, unlike the conventional cable having a circular cross section, since the strips 14 and 16 are used, the connection of these intersections becomes a surface contact, and it is easy to use without using a special connecting tool. Moreover, it can be firmly bonded.

Further, since the roof can be constructed by the suspension strip 14 and the pressing strip 16 which also serves as a finishing material, the structure is extremely simple and the weight of the roof is significantly reduced.

In addition, although the case where the present invention is applied to the saddle-shaped roof of a horse was illustrated in the above-mentioned embodiment, the present invention is not limited to this shape and can be applied to other shapes.

In addition, when the roof slope is relatively gentle, the presser strip 16
It is also possible to cut and use a folded plate bent in a corrugated form as a narrow width.

<Effects of the Invention> As described in detail in the above embodiments, according to the roof structure of the present invention, the members for introducing tension are the suspension band plate and the pressing band plate as compared with the conventional cable net structure. Therefore, the contact between both members becomes a surface contact, and the connecting structure between both members can be simplified, for example, bolt connection or spot welding.

In addition, when changing the cross-sectional area of one suspension strip in accordance with the stress required in each part on the way, strip members with different widths and thicknesses are joined and joined by welding or bolt fastening. As a result, it is possible to easily obtain a lightweight suspension strip having a cross section that is lean and that corresponds to the stress required in each part.

In addition, since the presser strip can be used as a roof finishing material by making it a wide thin plate, the number of members can be reduced and the weight can be reduced as much as possible in combination with the lightweight suspension strip. It is possible to provide a highly durable roof structure, and it is particularly useful for application to large span building structures.

[Brief description of drawings]

FIG. 1 is an overall view showing a first embodiment of a roof structure according to the present invention, FIG. 2 is a perspective view of a main part of FIG. 1, and FIG. 3 is an explanatory view showing transmission of force of the roof structure. FIG. 4 is a perspective view showing a main part of the suspension strip, and FIG. 5 is a plan view of FIG. 10 …… Outer wall, 12 …… Outer frame 14 …… Suspension strip, 16 …… Presser strip

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masei Tominaga 1 Kawasaki-cho, Chiba City, Chiba Prefecture Inside the Kawasaki Steel Co., Ltd. (72) Inventor Hiroyuki Takemoto 1 Kawasaki-cho, Chiba City Chiba Prefecture Kawasaki Steel Co., Ltd. Chiba Inside the steel mill (72) Inventor Atsushi Shoko 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Co., Ltd. Tokyo main office (72) Inventor Ryuji Okuda 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Head Office (56) References Japanese Patent Publication Sho 55-47182 (JP, B2)

Claims (1)

[Claims] 1. A tension band plate comprising a plurality of suspension band plates installed at predetermined intervals and a plurality of holding band plates which are arranged on the upper surface side of the hanging band plates so as to intersect with the hanging band plates. In the roof structure in which tension is introduced to the suspension strips, the pressing strips are made of wide thin plates, and both end portions of the pressing strips adjacent to each other in the longitudinal direction are While being joined to each other to form a roof finishing material, each one of the suspension strips has a cross-sectional area of each portion according to the tension generated differently for each portion corresponding to each pressing strip plate, A roof structure characterized in that stresses acting on the respective parts are set to values which are substantially equal to each other.