JP2005307536A

JP2005307536A - Grooved building board

Info

Publication number: JP2005307536A
Application number: JP2004125029A
Authority: JP
Inventors: Haruaki Kuragami; 治明倉上; Takao Kakishima; 孝男柿島; Takeshi Saito; 武斎藤
Original assignee: Sanko Metal Industrial Co Ltd
Current assignee: Sanko Metal Industrial Co Ltd
Priority date: 2004-04-21
Filing date: 2004-04-21
Publication date: 2005-11-04

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grooved building board which is prevented from curling and formation of pocket waves caused by residual stress distortion etc. <P>SOLUTION: The grooved building board is laterally asymmetrically formed, and set up by arranging a rise portion 2 on one side of a flat main board 1 and a covering rise portion 3 on the other side so as to cover at least an upper edge of the rise portion 2. In the grooved building board, the flat main board 1 has transverse ribs 1a serially formed thereon orthogonally to a longitudinal direction of the main board except banded flat portions 1b, 1b on both sides of the flat main board 1, and the rise portion 2 has longitudinal ribs 2c serially formed thereon. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、ねじれ（カーリング）を防止するとともに、残留応力歪み等によるポケットウェーブの発生を防止することができる溝型建築用板に関する。 The present invention relates to a grooved building board capable of preventing twisting (curling) and preventing generation of pocket waves due to residual stress distortion or the like.

従来より、溝型建築用板を成形後、並べ葺き、隣接する立上り部を溶接しながら施工していくと、該溝型建築用板内の残留応力歪みにより、主に溝底部に、不規則な通称「ポケットウェーブ」が発生する。該ポケットウェーブとは、簡単に言うと、溝底部のベコ付き現象である〔図６（Ｂ）参照〕。この図６（Ｂ）に示すポケットウェーブを符号ｗと称し、該ポケットウェーブｗの発生を防止するために、溝底部全体に、その長手方向に直交する横リブを連続的に形成していた。この連続的な横リブを、通称「さざ波」という。この横リブを深く入れる程、ポケットウェーブｗは改善されるが、リブが深くなる程、リブ加工後、溝型建築用板が幅方向にカールし始め、１０ｍ前後以上に長くなると、１回転以上カールし、それをフラット状に修正しながら並べ葺き（カール状の歪みとなっている為、元のカール状態に戻ろうとする作用が強い）、強引に仮止めし、本溶接していくのは至難の作業であった。従って、あまり深いリブ付与ができず、ポケットウェーブｗの改善という観点からすると、中途半端なリブ加工しかできなかった。 Conventionally, after forming a grooved building board, arranging it and welding it while welding adjacent rising parts, due to residual stress distortion in the grooved building board, mainly at the groove bottom, irregular Popular name "Pocket Wave" occurs. In short, the pocket wave is a phenomenon with a groove at the bottom of the groove (see FIG. 6B). The pocket wave shown in FIG. 6B is referred to as a symbol w, and in order to prevent the generation of the pocket wave w, a transverse rib perpendicular to the longitudinal direction is continuously formed on the entire groove bottom. This continuous lateral rib is commonly called “ripple wave”. The deeper the side ribs, the better the pocket wave w. However, the deeper the ribs, the more the ribbed building board begins to curl in the width direction after rib processing. Curling and arranging it while correcting it to a flat shape (because it has a curled distortion, it has a strong effect of trying to return to the original curled state) It was a difficult task. Therefore, it was not possible to give a very deep rib, and from the viewpoint of improving the pocket wave w, only halfway rib processing was possible.

一般に、溝型建築用板としては左右の立上り部形状が非対称に形成されたものが使用されることが多い。この場合、溝底部に対して横リブを付与すると、その結果、溝底部は縮みの状態（縮みの歪み）となり、立上り部を上とすると、下側へ湾曲化する。つまり、成型材は下方向に湾曲化する。そして、左右の立上り部はこの湾曲化を抑止する働きをする。そして、この抑止力と湾曲化の力とがバランスを保った位置で湾曲形状が維持される。ここで、左右の立上り部形状が非対称である場合、両立上り部の断面強度が異なることとなり、断面強度がより大きい側の立上り部（図２（Ａ）の左側）と、断面強度が小さい側の立上り部（図２（Ａ）の右側）とで湾曲化の曲率半径が相違することとなる。 In general, a grooved building board is often used in which left and right rising portions are formed asymmetrically. In this case, when the lateral rib is applied to the groove bottom, as a result, the groove bottom is in a contracted state (constriction of contraction), and when the rising part is up, the groove is curved downward. That is, the molding material is curved downward. The left and right rising parts serve to suppress this bending. The curved shape is maintained at a position where the balance between the deterring force and the curving force is maintained. Here, when the left and right rising part shapes are asymmetrical, the cross-sectional strengths of the compatible rising parts are different, and the rising part on the side where the cross-sectional strength is larger (the left side of FIG. 2A) and the side where the cross-sectional strength is low The curvature radius of curving is different from the rising portion (right side of FIG. 2A).

その結果、断面強度の大きい立上り部分での湾曲化程度は、断面強度の小さい立上り部分でのそれより小さくなる。従って、溝型建築用板の左右で湾曲化状態が異なり、湾曲化の大きい方（換言すれば、立上り部断面強度が小さい端部側）へねじれ（カーリング）が発生するのである〔図６（Ａ）参照〕。つまり、両立上り部の断面強度が異なる程、カーリングはひどくなる。そこで、左右立上り部の形状を同じにして、断面強度を同じとすれば良いのだが、一般に、図２（Ａ）のように、立上り部を重ねる（嵌合する）形状では、内側立上り部（図２（Ａ）右側）上部の曲げが外側立上り部（図２（Ａ）左側）上部の曲げより小さくなる為、内側立上り部の断面強度の方が小さい。その結果、ねじれが発生する。 As a result, the degree of bending at the rising portion where the cross-sectional strength is high is smaller than that at the rising portion where the cross-sectional strength is low. Therefore, the curved state is different between the right and left of the grooved building board, and twisting (curling) occurs toward the larger curved side (in other words, the end portion side where the rising portion cross-sectional strength is small) [FIG. See A)]. In other words, the more the cross-sectional strength of the compatible upward portion is different, the more curling becomes. Therefore, the shape of the left and right rising portions should be the same and the cross-sectional strength should be the same. Generally, in the shape of overlapping (fitting) the rising portions as shown in FIG. 2 (A) right side) Since the bending of the upper part is smaller than the bending of the upper part of the outer rising part (left side of FIG. 2A), the cross-sectional strength of the inner rising part is smaller. As a result, twisting occurs.

さらに、ポケットウェーブｗ防止の為、前記さざ波なる横リブの深さをより深く、ピッチをより大きくすると、溝底部は上下により大きく湾曲化する力が作用し、断面強度が小さい側の立上り部に対し、著しいカーリング（ねじれ）が発生し、長手方向に長尺な場合には、前記溝型建築用板を並設することができなくなり、施工できないものであった。このシ−ム溶接用の溝型建築用板は、一般に１０ｍ以上と長く、施工するには、このカーリングをフラットな状態に直し、葺いていくので、このカーリングがひどいと、フラット状に葺けなくなるのである。 Furthermore, in order to prevent pocket waves w, when the depth of the rippled lateral ribs is made deeper and the pitch is made larger, the groove bottom part acts to bend more and more vertically, and the rising part on the side where the cross-sectional strength is small is applied. On the other hand, when significant curling (twisting) occurs and the length is long in the longitudinal direction, the grooved building boards cannot be juxtaposed and cannot be constructed. This groove-type building plate for seam welding is generally longer than 10 m, and for installation, this curling is flattened and rolled, so if this curling is bad, it will burn flat. It will disappear.

このため、ねじれ（カーリング）を最小限にするには、前記全面横リブの深さを浅くして溝型建築用板に成形加工していた。今度は、このため、溝底部の横リブ形成の効果が減少して前記ポケットウェーブｗは発生しがちになっているのが現状である。つまり、ポケットウェーブｗ対策として十分な横リブ形成ができず、該横リブの深さをより深く、且つ、より大きいピッチで付与することは従来ではできなかった。また、特許文献１でも、従来の方法でも無理であった。
特開平１０−２３７５９１ For this reason, in order to minimize twisting (curling), the depth of the entire lateral ribs is reduced to form the grooved building board. This time, the current situation is that the effect of forming the lateral rib at the bottom of the groove is reduced and the pocket wave w tends to be generated. That is, it is impossible to form a sufficient horizontal rib as a countermeasure against pocket waves, and it has not been possible to apply the horizontal rib more deeply and at a larger pitch. Further, neither Patent Document 1 nor the conventional method is possible.
JP-A-10-237591

本発明が解決しようとする課題（技術的課題又は目的等）は、ねじれ（カーリング）防止とポケットウェーブ発生防止とをより確実にできるようにすることである。つまり、本願は、このカール発生を大幅に抑制でき、より深いリブ加工を可能とし、その結果、ポケットウェーブ発生を大幅に防止した溝型建築用板を提供するものである。 The problem to be solved by the present invention (technical problem or object) is to make it possible to more reliably prevent twisting (curling) and prevent generation of pocket waves. That is, the present application provides a grooved construction board that can greatly suppress the occurrence of curling, enables deeper rib processing, and, as a result, significantly prevents the generation of pocket waves.

そこで、発明者は上記課題を解決すべく鋭意，研究を重ねた結果、本発明を、平坦状主板の一側に立上り部が、その他側に前記立上り部の上端を少なくとも覆うような被覆立上り部がそれぞれ形成された左右非対称の溝型建築用板において、平坦状主板に長手方向に直交する横リブが連続的に形成されると共に、前記立上り部は縦リブを連続的に形成したことを特徴とする溝型建築用板としたことにより、前記課題を解決した。また、平坦状主板の一側に立上り部が、その他側に前記立上り部の上端を少なくとも覆うような被覆立上り部がそれぞれ形成された左右非対称の溝型建築用板において、平坦状主板の両側側部の帯状平坦部を除いて、該平坦状主板に長手方向に直交する横リブが連続的に形成されると共に、前記立上り部は縦リブを連続的に形成したことを特徴とする溝型建築用板としたことにより、前記課題を解決した。 Therefore, as a result of intensive researches to solve the above-mentioned problems, the inventors have devised a covering rising portion in which the rising portion covers at least one upper end of the rising portion on one side of the flat main plate and the upper end of the rising portion on the other side. In each of the left and right asymmetric groove-type building boards, horizontal ribs perpendicular to the longitudinal direction are continuously formed on the flat main plate, and vertical ribs are continuously formed in the rising portion. By solving the above problems, the above problems were solved. Further, in the left and right asymmetric groove-type building board in which a rising portion is formed on one side of the flat main plate and a covering rising portion is formed on the other side so as to cover at least the upper end of the rising portion, both sides of the flat main plate Except for the belt-like flat portion of the portion, a transverse rib perpendicular to the longitudinal direction is continuously formed on the flat main plate, and the rising portion has a continuous continuous rib. The above-mentioned problem has been solved by using a plate.

また、前記構成において、前記平坦状主板と前記帯状平坦部とが、帯状平坦部幅／平坦状主板幅の比率で約０．０２〜約０．１２であることを特徴とする溝型建築用板としたことにより、前記課題を解決した。また、前記構成において、前記立上り部と縦リブとが、縦リブ長／立上り部高さの比率で、約０．４以上であることを特徴とする溝型建築用板としたことにより、前記課題を解決した。また、前記構成において、前記横リブのピッチは約１０〜約４０mmで且つ該横リブの深さは約１〜約４mmであることを特徴とする溝型建築用板としたことにより、前記課題を解決した。また、前記構成において、前記縦リブのピッチは約５〜約３０mmで且つ該縦リブの深さは約１〜約４mmであることを特徴とする溝型建築用板としたことにより、前記課題を解決した。さらに、前記構成において、前記立上り部に対して、該立上り部の長手方向を向く膨出条が形成されてなることを特徴とする溝型建築用板としたことにより、前記課題を解決したものである。 Moreover, in the said structure, the said flat main board and the said strip | belt-shaped flat part are about 0.02-about 0.12 in the ratio of a strip | belt-shaped flat part width / flat main plate width, It is for groove type construction characterized by the above-mentioned. The problem was solved by using a plate. Further, in the above-described configuration, the rising portion and the vertical rib have a ratio of vertical rib length / rising portion height of about 0.4 or more. Solved the problem. Moreover, in the said structure, it is said that the said rib was pitched about 10 to about 40 mm, and the depth of the said horizontal rib is about 1 to about 4 mm, It was set as the said groove-type building board, Solved. Further, in the above-mentioned configuration, the above-mentioned problem is achieved by providing a grooved building board characterized in that the pitch of the vertical ribs is about 5 to about 30 mm and the depth of the vertical ribs is about 1 to about 4 mm. Solved. Furthermore, in the above-mentioned configuration, the above-mentioned problem is solved by providing a grooved building board characterized in that a bulging strip facing the longitudinal direction of the rising portion is formed with respect to the rising portion. It is.

請求項１の発明においては、ねじれ（カーリング）を防止するとともに、残留応力歪み等によるポケットウェーブの発生を防止することができるという効果を奏する。請求項２又は３の発明においては、ねじれ（カーリング）防止とポケットウェーブ発生防止とをより確実にできる。さらに、請求項４，５，６又は７の発明においても、請求項１と略同様な効果を奏する。 According to the first aspect of the invention, it is possible to prevent twisting (curling) and to prevent generation of pocket waves due to residual stress distortion or the like. In the invention of claim 2 or 3, it is possible to more reliably prevent twisting (curling) and prevent occurrence of pocket waves. Further, the invention of claim 4, 5, 6 or 7 has substantially the same effect as that of claim 1.

以下、本発明の第１実施形態について図面に基づいて説明すると、図１は本発明の溝型建築用板の斜視図であり、図２は断面図である。該溝型建築用板は、平坦状主板１の一側〔図２（Ａ）において右側〕に立上り部２が、その他側〔図２（Ａ）において左側〕に被覆立上り部３がそれぞれ形成され左右非対称に形成されている。前記平坦状主板１は幅方向に平坦に形成されているが、後述の横リブ１ａを多数形成することによって、平坦状主板１の底面側が幅方向に縮まり僅かに湾曲化する〔図２（Ａ）鎖線部〕。また、平坦状主板１の長手方向は長尺であって、平坦に形成されたり、適宜の曲率にて湾曲して形成されることもある。また、前記被覆立上り部３の上端箇所で前記立上り部２の上端を覆うように構成されている。前記平坦状主板１の両側を残して、該平坦状主板１に長手方向に直交する横リブ１ａ，１ａ，…が連続的に形成されるとともに、前記平坦状主板１の両側は帯状平坦部１ｂ，１ｂとして形成されている。 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a grooved building board of the present invention, and FIG. 2 is a cross-sectional view. The grooved building board is formed with a rising portion 2 on one side (right side in FIG. 2 (A)) of the flat main plate 1 and a covering rising portion 3 on the other side (left side in FIG. 2 (A)). It is formed asymmetrical. The flat main plate 1 is formed flat in the width direction, but by forming a large number of lateral ribs 1a to be described later, the bottom surface side of the flat main plate 1 shrinks in the width direction and is slightly curved [FIG. ) Chain line portion]. Further, the longitudinal direction of the flat main plate 1 is long and may be formed flat or curved with an appropriate curvature. The upper end portion of the covering rising portion 3 is configured to cover the upper end of the rising portion 2. .. Are formed continuously on the flat main plate 1 while leaving both sides of the flat main plate 1, and both sides of the flat main plate 1 are strip flat portions 1b. , 1b.

また、前記立上り部２は前記被覆立上り部３よりは断面強度（断面係数）が小さく形成されている。ここで、本願は、断面強度をより大きくして溝底部の湾曲状態をより平坦状にしたい場合や、左右立上り部の断面強度をバランスよく調整したい場合等は、その他側立上り部に縦リブを付与することがある。また、本願で、溝底部の幅方向全域に横リブを付与することが可能であるが、両側部を平坦状に残すのが好ましい。この側部は、溝底部がリブ付与に伴い湾曲化するのを抑制し、湾曲状態をより小さくできるとともに、カーリングを抑制する作用として働くことが判ったのである。さらに、前記溝型建築用板の材質としては、シ−ム溶接可能であって、ステンレス鋼，チタン鋼等の不銹鋼材である。 The rising portion 2 is formed to have a smaller cross-sectional strength (section modulus) than the covering rising portion 3. Here, in the present application, when it is desired to increase the cross-sectional strength and make the curved state of the groove bottom flat, or to adjust the cross-sectional strength of the left and right rising parts in a balanced manner, vertical ribs are provided on the other side rising parts. May be granted. Further, in the present application, it is possible to apply a lateral rib to the entire width direction of the groove bottom, but it is preferable to leave both sides flat. It has been found that this side part acts to act as an action of suppressing curling while suppressing the curvature of the groove bottom part with the provision of ribs, making the curved state smaller. Further, the material of the grooved building plate can be seam welded and is a stainless steel material such as stainless steel or titanium steel.

前記立上り部２の上端は、単に垂直状に形成されたり〔図２（Ｄ）参照〕、或いは前記溝型建築用板の位置の内方に折返し片２ａが屈曲形成されたり〔図２（Ａ）及び（Ｂ）参照〕又はその外方に折返し片２ａが屈曲形成されている〔図２（Ｃ）参照〕。また、前記被覆立上り部３の上端には、前記溝型建築用板の位置の外方に被覆折返し片３ａが屈曲形成されている〔図１及び図２（Ａ）等参照〕。このように折返し片２ａ付き立上り部２であっても、前記被覆折返し片３ａ付き被覆立上り部３に対して常時、断面強度（断面係数）が小さく形成されているものである。 The upper end of the rising portion 2 is simply formed in a vertical shape (see FIG. 2D), or the folded piece 2a is bent inward of the position of the grooved building board [see FIG. ) And (B)] or the bent piece 2a is bent outward (see FIG. 2 (C)). In addition, a coating folded piece 3a is bent at the upper end of the coating rising portion 3 outside the position of the grooved building board (see FIG. 1 and FIG. 2A, etc.). Thus, even in the rising portion 2 with the folded piece 2a, the cross-sectional strength (section modulus) is always smaller than that of the covered rising portion 3 with the coated folded piece 3a.

また、前記立上り部２及び被覆立上り部３の下部側に外方、又は内方に広がるような開き状部２ｓ，３ｓが形成されている。具体的には、単なる傾斜状をなしたり〔図２（Ａ）参照〕、大円弧状〔図２（Ｅ）参照〕又は逆円弧状をなしたり〔図２（Ｆ）参照〕、或いは小円弧状〔図２（Ｇ）参照〕をなしている。さらには、単に直角状にすることもある。また、前記平坦状主板１の両側には帯状平坦部１ｂ，１ｂが形成され、且つ前記平坦状主板１の略中央位置（横リブ１ａ箇所の略中央位置）にも帯状平坦部１ｂが形成されることもある。 Opening portions 2s and 3s are formed on the lower side of the rising portion 2 and the covering rising portion 3 so as to spread outward or inward. Specifically, it has a simple inclination (see FIG. 2A), a large arc shape (see FIG. 2E) or a reverse arc shape (see FIG. 2F), or a small circle. It has an arc shape (see FIG. 2G). Furthermore, it may be simply a right angle. In addition, belt-like flat portions 1b and 1b are formed on both sides of the flat main plate 1, and a belt-like flat portion 1b is also formed at a substantially central position of the flat main plate 1 (substantially central position of the lateral rib 1a). Sometimes.

また、図５（Ａ）及び（Ｃ）に示すように、前記立上り部２に対して、該立上り部２の長手方向を向く膨出条２ｂが形成されることもある。該膨出条２ｂは、前記立上り部２の下側に位置し、且つ前記溝型建築用板の位置の内方〔図５（Ａ）において左方向〕に膨出形成されている。つまり、前記立上り部２と隣接する溝型建築用板の被覆立上り部３を接合した場合に前記膨出条２ｂが邪魔にならないように形成されている。 Further, as shown in FIGS. 5A and 5C, a bulging strip 2 b facing the longitudinal direction of the rising portion 2 may be formed with respect to the rising portion 2. The bulging strip 2b is located below the rising portion 2 and bulges inward (leftward in FIG. 5A) from the position of the grooved building board. That is, when the rising part 2 and the covering rising part 3 of the adjacent grooved building board are joined, the bulging strip 2b is formed so as not to get in the way.

さらに、図４（Ａ），図５（Ａ）及び（Ｃ）に示すように、前記立上り部２には、該立上り部２の長手方向に直交する縦リブ２ｃ，２ｃ，…が連続的に形成されている。前記立上り部２には前記縦リブ２ｃのみが形成されることもあるし、或いは前記膨出条２ｂとともに形成されることもある。さらに、前記立上り部２には前記膨出条２ｂのみが形成されることもある。この縦リブ２ｃ又は前記膨出条２ｂ付きの前記立上り部２であっても、前記被覆立上り部３に対して常時、断面強度（断面係数）は同等又は小さく形成されているものである。 Further, as shown in FIGS. 4A, 5A and 5C, the rising portion 2 is continuously provided with vertical ribs 2c, 2c,... Perpendicular to the longitudinal direction of the rising portion 2. Is formed. Only the vertical rib 2c may be formed on the rising portion 2, or may be formed together with the bulging strip 2b. Furthermore, only the bulging strip 2b may be formed on the rising portion 2. Even in the rising portion 2 with the vertical rib 2c or the bulging strip 2b, the cross-sectional strength (section modulus) is always equal to or smaller than that of the covering rising portion 3.

まず、ピッチｐについて具体的に説明すると、前記平坦状主板１の横リブ１ａのピッチｐは約１０〜４０mm、好ましくは、約１５〜３０mmとしてなるとともに、該横リブ１ａの深さｈは約１〜４mm、好ましくは、約１．５〜３mmである。また、リブ形成のない帯状平坦部１ｂは、該両帯状平坦部１ｂの幅／平坦状主板１の幅の比率で、約０．０２〜０．１２、好ましくは、０．０３〜０．０６である。また、前記縦リブ２ｃのピッチｐは、約５〜３０mm、好ましくは、約６〜１２としてなるとともに、該縦リブ２ｃの深さは約約１〜４mmとして、好ましくは、約１．５〜３mm、さらに、前記立上り部２と縦リブ２ｃの長さ（高さ）が、縦リブ長／立上り部高さの比率で０．４以上であることが好ましい。なお、従来の、横リブピッチは約１０mm、深さは約１mmでは、ポケットウェーブｗ防止の観点では、中途半端なリブ形成であった。 First, the pitch p will be described in detail. The pitch p of the lateral rib 1a of the flat main plate 1 is about 10 to 40 mm, preferably about 15 to 30 mm, and the depth h of the lateral rib 1a is about It is 1 to 4 mm, preferably about 1.5 to 3 mm. Further, the strip-shaped flat portion 1b without rib formation is a ratio of the width of the two strip-shaped flat portions 1b / the width of the flat main plate 1 of about 0.02 to 0.12, preferably 0.03 to 0.06. It is. The pitch p of the vertical ribs 2c is about 5-30 mm, preferably about 6-12, and the depth of the vertical ribs 2c is about 1-4 mm, preferably about 1.5- Further, the length (height) of the rising portion 2 and the vertical rib 2c is preferably 0.4 or more in the ratio of vertical rib length / rising portion height. Conventionally, when the horizontal rib pitch is about 10 mm and the depth is about 1 mm, the rib formation is halfway from the viewpoint of preventing pocket waves.

以上のように前記平坦状主板１に横リブ１ａ及び前記立上り部２に縦リブ２ｃを成形すると、カーリングは著しく改善され、施工上、何ら問題ない程度に改善できた。これは、前記立上り部２の断面強度が縦リブ付与により大きくなり、前記被覆立上り部３の断面強度と同等となったものと推定できる。さらに、前記縦リブ２ｃは前記立上り部２の垂直部の高さ全面に付与しても良いが、高さの４０〜８０％の範囲でリブ形成でよい。また、前記横リブ１ａのピッチとして約１０〜４０mmとし、且つその深さとして、約１〜４mmとすることでポケットウェーブｗの発生を防止できる。このようにカーリングの改善と、ポケットウェーブｗの発生を同時に満足させることができるのは、前記平坦状主板１の両側の帯状平坦部１ｂ，１ｂの存在も大きく寄与している。 As described above, when the horizontal rib 1a is formed on the flat main plate 1 and the vertical rib 2c is formed on the rising portion 2, the curling is remarkably improved, and can be improved to the extent that there is no problem in construction. This can be presumed that the cross-sectional strength of the rising portion 2 is increased by the provision of the longitudinal ribs, and is equivalent to the cross-sectional strength of the covering rising portion 3. Further, the vertical rib 2c may be applied to the entire height of the vertical portion of the rising portion 2, but the rib may be formed within a range of 40 to 80% of the height. Further, the occurrence of pocket waves w can be prevented by setting the pitch of the lateral ribs 1a to about 10 to 40 mm and the depth to about 1 to 4 mm. Thus, the presence of the band-like flat portions 1b and 1b on both sides of the flat main plate 1 contributes greatly to the improvement of curling and the generation of the pocket wave w at the same time.

この点について詳述すると、前記平坦状主板１の横リブ１ａ及び前記立上り部２の縦リブ２ｃをそれぞれ成形しても、前記平坦状主板１の両側には帯状平坦部１ｂ，１ｂが存在しているために、前記平坦状主板１は湾曲化（縮み）の歪みがこの部分でも吸収される。これによって、前記立上り部２が前記被覆立上り部３よりは断面強度が小さく形成されていても、縦リブと側部帯状平坦部との効果で、ねじれ（カーリング）が殆ど発生しなくなるとともに、前述したように横リブ１ａのピッチ及び深さを大きくしたことでポケットウェーブｗの発生を完全に防止できるというものである。 This point will be described in detail. Even if the horizontal rib 1a of the flat main plate 1 and the vertical rib 2c of the rising portion 2 are respectively formed, the belt-like flat portions 1b and 1b exist on both sides of the flat main plate 1. For this reason, the flat main plate 1 absorbs the bending (shrinkage) distortion even in this portion. As a result, even if the rising portion 2 is formed to have a cross-sectional strength smaller than that of the covering rising portion 3, the effect of the vertical rib and the side belt-like flat portion hardly causes torsion (curling). As described above, the generation of the pocket wave w can be completely prevented by increasing the pitch and depth of the lateral ribs 1a.

本願は、少なくとも前記立上り部２の断面強度をより大きくして溝底部なる前記平坦状主板１の湾曲状態をより平坦状にしたい場合や、左右の立上り部２及び被覆立上り部３の断面強度バランスをより調整したい場合等は、その被覆立上り部３にも縦リブを付与し、左右の立上り部２及び被覆立上り部３にそれぞれ縦リブを付与することがある。但し、前記被覆立上り部３の縦リブは、前記立上り部２の縦リブ２ｃよりも軽度なリブ付与が条件である。また、本願で、溝底部なる前記平坦状主板１の幅方向全域に横リブ１ａを付与することが可能であるが、両側部を平坦状に残して帯状平坦部１ｂとして形成されている。該帯状平坦部１ｂは、前記平坦状主板１がリブ付与に伴い湾曲化するのを抑制し、湾曲状態をより小さくできるとともに、カーリングを抑制する作用として働くことが判ったのである。 In the present application, the cross-sectional strength balance between the right and left rising portions 2 and the covering rising portion 3 is used when it is desired to increase the sectional strength of at least the rising portion 2 to make the flat main plate 1 curved at the bottom of the groove more flat. When it is desired to adjust the height, the vertical ribs may be provided to the covering rising portion 3 and the vertical ribs may be provided to the left and right rising portions 2 and the covering rising portion 3, respectively. However, it is a condition that the vertical rib of the covering rising portion 3 is lighter than the vertical rib 2c of the rising portion 2. Further, in the present application, it is possible to provide the lateral rib 1a over the entire width direction of the flat main plate 1 serving as the groove bottom portion, but it is formed as a belt-like flat portion 1b leaving both side portions flat. It has been found that the belt-like flat portion 1b functions as an action of suppressing the curling of the flat main plate 1 as it is restrained from being curved as the rib is applied, and further reducing the curving state.

このように成形した溝型建築用板は、カーリングが改善されており、屋上等の施工現場上で並設する作業を能率的にできるし、さらに、屋上等の施工現場上で並設して、溝型建築用板の前記立上り部２の上端を、隣接する溝型建築用板の前記被覆立上り部３の被覆折返し片３ａにて被覆するとともに、前記立上り部２と被覆立上り部３と接合して、適宜な箇所の仮葺き時のスポット溶接止め、また前記立上り部２と被覆立上り部３とのシーム溶接箇所からの高温の熱発生による熱歪み等があっても、横リブ１ａのピッチ及び深さを大きくしたことでポケットウェーブｗの発生を防止できる。つまり、溝型建築用板自体のみならず、施工中又は施工後であっても、カーリングの改善と、ポケットウェーブｗの発生を同時に満足させることができるという極めて有用なる発明である。さらに、シーム溶接による溝型建築用板として、外観としても優れ、見せる屋根として好適である。 The grooved building board formed in this way has improved curling, can be efficiently installed side by side on the construction site such as the rooftop, and can be installed side by side on the construction site such as the rooftop. The upper end of the rising part 2 of the grooved building board is covered with the covered folded piece 3a of the covering rising part 3 of the adjacent grooved building board, and the rising part 2 and the covering rising part 3 are joined. The pitch of the lateral ribs 1a is fixed even when there is a thermal welding or the like due to high temperature heat generation from the seam welded portion between the rising portion 2 and the covering rising portion 3 when spot welding is stopped at an appropriate portion. And generation of pocket waves w can be prevented by increasing the depth. That is, the invention is extremely useful in that it can satisfy the improvement of curling and the generation of the pocket wave w at the same time, not only during the grooved construction board itself, but also during or after construction. Furthermore, as a grooved construction board by seam welding, it is excellent in appearance and suitable as a roof to be shown.

（Ａ）は本発明の斜視図、（Ｂ）は要部拡大斜視図、（Ｃ）は（Ｂ）の断面図、（Ｄ）は（Ｃ）とは別の実施形態の断面図である。(A) is a perspective view of the present invention, (B) is an enlarged perspective view of a main part, (C) is a sectional view of (B), and (D) is a sectional view of an embodiment different from (C). （Ａ）は本発明の略示断面図、（Ｂ）は（Ａ）の立上り部及び被覆立上り部の要部の断面図、（Ｃ）は（Ｂ）とは別の実施形態の断面図、（Ｄ）は（Ｂ）とはさらに別の実施形態の断面図、（Ｅ），（Ｆ）及び（Ｇ）は被覆立上り部箇所の別の実施形態の断面図である。(A) is a schematic cross-sectional view of the present invention, (B) is a cross-sectional view of the main part of the rising portion and the covering rising portion of (A), (C) is a cross-sectional view of an embodiment different from (B), (D) is a cross-sectional view of another embodiment different from (B), and (E), (F) and (G) are cross-sectional views of another embodiment of the coating rising portion. （Ａ）は本発明を底面側から見た底面斜視図、（Ｂ）は（Ａ）のＸ₁−Ｘ₁矢視端面図、（Ｃ）は（Ａ）のＸ₂−Ｘ₂矢視端面図である。(A) is a bottom perspective view of the present invention from the bottom, (B) is X ₁ -X ₁ arrow end view, (C) is X ₂ -X ₂ arrow end face of (A) of (A) FIG. （Ａ）は本発明の別の実施形態の斜視図、（Ｂ）は（Ａ）のＸ₃−Ｘ₃矢視端面図、（Ｃ）は（Ａ）のＸ₄−Ｘ₄矢視端面図である。(A) is a perspective view of another embodiment of the present invention, (B) is X ₃ -X ₃ arrow end view, (C) is X ₄ -X ₄ arrow end view of (A) of (A) It is. （Ａ）は本発明の別の実施形態の略示断面図、（Ｂ）は（Ａ）の（ア）部拡大底面図、（Ｃ）は（Ａ）の（ロ）部拡大斜視図である。(A) is a schematic cross-sectional view of another embodiment of the present invention, (B) is an enlarged bottom view of (A) part of (A), and (C) is an enlarged perspective view of (B) part of (A). . （Ａ）はねじれ（カーリング）が発生している従来公知の溝型建築用板の斜視図、（Ｂ）はポケットウェーブが発生している従来公知の溝型建築用板の斜視図である。(A) is a perspective view of the conventionally well-known groove type building board in which the twist (curling) has generate | occur | produced, (B) is a perspective view of the conventionally well-known groove type building board in which the pocket wave has generate | occur | produced.

Explanation of symbols

１…平坦状主板
１ａ…横リブ
１ｂ…帯状平坦部
２…立上り部
２ｂ…膨出条
２ｃ…縦リブ
３…被覆立上り部 DESCRIPTION OF SYMBOLS 1 ... Flat main plate 1a ... Horizontal rib 1b ... Strip-shaped flat part 2 ... Rising part 2b ... Swelling strip 2c ... Vertical rib 3 ... Covering rising part

Claims

In a right and left asymmetrical groove type building board in which a rising portion is formed on one side of the flat main plate and a covering rising portion is formed on the other side so as to cover at least the upper end of the rising portion, the flat main plate is perpendicular to the longitudinal direction. The groove-type building board is characterized in that horizontal ribs are continuously formed, and vertical ribs are continuously formed in the rising portion.

In the left and right asymmetric groove-type building board in which a rising portion is formed on one side of the flat main plate and a covering rising portion is formed on the other side so as to cover at least the upper end of the rising portion. Except for the belt-like flat part, a transverse rib perpendicular to the longitudinal direction is continuously formed on the flat main plate, and the rising part is formed with a continuous vertical rib. .

3. The grooved building board according to claim 2, wherein the flat main plate and the belt-like flat portion have a ratio of belt-like flat portion width / flat main plate width of about 0.02 to about 0.12. .

3. The grooved building board according to claim 1, wherein the rising portion and the vertical rib have a ratio of vertical rib length / rising portion height of about 0.4 or more.

3. A grooved building board according to claim 1 or 2, wherein the pitch of the lateral ribs is about 10 to about 40 mm and the depth of the lateral ribs is about 1 to about 4 mm.

3. A grooved building board according to claim 1 or 2, wherein the pitch of the vertical ribs is about 5 to about 30 mm and the depth of the vertical ribs is about 1 to about 4 mm.

3. A grooved construction board according to claim 1 or 2, wherein a bulging strip that faces the longitudinal direction of the rising portion is formed on the rising portion.