JP2021188330A - Joint structure of folded plate roof plate - Google Patents

Abstract

PURPOSE: To provide a joint structure for a folded plate roof plate which can be easily constructed and has extremely excellent waterproof resistance against ingress of rainwater in a tightening type folded plate roof.CONSTITUTION: In a folded plate roof plate A1 located on a downstream side, a step portion 24 is formed on the upstream side in a longitudinal direction, a step bottom surface portion 21 lower than a bottom surface portion 11 is formed via the step portion 24. In a lower seam portion 14, an excised portion 14c in which an above portion is excised is provided, and a drainage recess 25 formed from the step portion 24 toward the downstream side of the bottom surface portion 11 is provided. A folded plate roof plate A2 located on the downstream side has an upper connecting area portion J2. The upper connecting area portion J2 is superimposed on a lower connecting area portion J1 so that a downstream side end of the folded plate roof plate A2 is placed at a predetermined distance on the downstream side of the bottom surface 11 with the step portion 24 of the folded plate roof plate A1 as a boundary. A strip shaped sealing material 3 is arranged along the width direction orthogonal to the longitudinal direction on the downstream side of the step bottom surface portion 21 of the folded plate roof plate A1 and the folded plate roof plate A2, and is sandwiched between the lower connecting area portion J1 and the upper connecting area portion J2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a joint structure of a folded plate roof plate that can be easily constructed and has extremely excellent waterproof property against the ingress of rainwater in a tightening type folded plate roof.

Conventionally, many folded-plate roofs (including walls) made of metal-tightened-type folded-plate roof plates have been constructed. In the folded plate roof plate constituting such a folded plate roof, generally, inclined rising portions are formed on both sides in the width direction of the valley-shaped portion, and the lower portion is formed on one side in the width direction and the upper portion is formed on the other side. Each is formed. Then, a plurality of the folded plate roof plates are arranged side by side, and the lower and upper parts of the adjacent folded plate roof plates are fastened while being overlapped with each other via a hanger, and the hanger is attached to the receiving metal fitting. A metal folded plate roof will be constructed.

Such a tightening type folded plate roof is often adopted as a roof of a large building. Therefore, many of the folded plate roof plates used are long ones. However, there is a limit to the length of the folded plate roof plate, and in the case of a building that exceeds the limit, it will be necessary to connect the folded plate roof plates in a row in the longitudinal direction. ..

Moreover, in recent years, such folded-plate roof plates are often manufactured in advance at factories, and the folded-plate roof plates manufactured at the factories are often transported to the site for construction. Therefore, the length of the folded plate roof plate that can be transported from the factory to the site is limited to about 20 meters, and usually, it is often 10 meters or more. In such a case, the folded plate roof plates are connected to each other in the longitudinal direction, and it is necessary to form a joint portion there.

Japanese Unexamined Patent Publication No. 2013-213395

As described above, in the case of a tightening type folded plate roof, not only a large-sized or medium-sized building but also folded plate roof plates can be connected to each other to construct a roof frequently. Many such joint structures in the longitudinal direction of the folded plate roof plate have been developed. And of particular importance is waterproofness, followed by workability. Further, it is desired that the joint portion is not so conspicuous from the appearance.

Patent Document 1 is fried as an example of many joint structures. According to this Patent Document 1, the object of waterproofness is achieved. However, in contrast to the ordinary folded plate roof plate, Patent Document 1 still has some problems such as complicated processing and troublesome construction. An object of the present invention is to provide a joint structure of a folded plate roof plate which can be made extremely excellent in waterproofness, can be easily constructed, and is inconspicuous.

Therefore, as a result of diligent research to solve the above problems, the inventor has obtained the invention of claim 1 in which inclined side surface portions are formed on both sides in the width direction of the bottom surface portion, and from the upper ends of both side surface portions. The upper side of the folded plate roof plate in which the top surface portion is formed on the outer side, the lower portion is formed from the outer end of one of the top surface portions, and the upper portion is formed from the outer end of the other top surface portion. In the joint structure on the underwater side, the folded plate roof plate located on the underwater side has a step portion formed on the water upper side in the longitudinal direction and along the width direction orthogonal to the longitudinal direction, and the step portion is formed through the step portion. A step bottom portion lower than the bottom portion is formed, and the lower roof portion is provided with a cut portion in which the upper portion is cut off from the position of the step portion to a position separated by a predetermined distance from the position of the step portion toward the water bottom side. The folded plate roof plate, which has a lower connection region portion and a drainage recess formed from the step portion toward the water bottom side of the bottom surface portion and is located on the water upper side, is on the water underwater side in the longitudinal direction. Both end portions of the side surface portions have an upper connection region portion in which a bent piece inclined downward is formed, and the bottom surface portion is defined by the step portion of the folded plate roof plate located on the underwater side. The upper connection region portion is superimposed on the lower connection region portion so that the underwater side end portion of the folded plate roof plate located on the water upper side is placed at a position separated by a predetermined distance on the underwater side of the above. , The strip-shaped sealing material is arranged along the width direction orthogonal to the longitudinal direction on the bottom surface of the step of the folded plate roof plate located on the underwater side and on the underwater side of the folded plate roof plate adjacent to the upper side of the water. The above problem was solved by adopting a joint structure of a folded plate roof plate having a structure sandwiched between the lower connection region portion and the upper connection region portion.

According to the invention of claim 2, in the joint structure of the folded plate roof plate according to claim 1, the drainage recess has the water upper end as a stepped portion and the same surface as the step bottom surface portion. The above-mentioned problem was solved by adopting a joint structure of a folded plate roof plate having a dented bottom surface having an inclined surface so that the lower end of the water surface is the same surface as the bottom surface portion. According to the third aspect of the present invention, in the joint structure of the folded plate roof plate according to the second aspect, the recessed bottom surface is a joint structure of the folded plate roof plate having a rectangular shape, thereby solving the above-mentioned problems.

According to the fourth aspect of the present invention, in the joint structure of the folded plate roof plate according to the second aspect, the recessed bottom surface is formed into a triangular shape of the folded plate roof plate joint structure to solve the above-mentioned problems. The invention of claim 5 is the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3 or 4, wherein the recessed bottom surface is a flat surface. By doing so, the above problem was solved. The invention of claim 6 is the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3 or 4, wherein the recessed bottom surface is an arcuate surface. As a result, the above problem was solved.

According to the invention of claim 7, in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5 or 6, two drainage recesses are provided and the bottom surface thereof is provided. The above problem was solved by adopting a joint structure of folded plate roof plates arranged on both sides in the width direction of the portion. According to the invention of claim 8, in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5 or 6, three drainage recesses are provided and the bottom surface thereof is provided. The above-mentioned problems have been solved by adopting a joint structure of folded plate roof plates arranged on both sides in the width direction and in the middle in the width direction.

The invention of claim 9 is the folded plate roof located on the water upper side in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8. The underwater end of the plate is placed with a part of the drainage recess of the folded plate roof plate located on the underwater side exposed, and the upper connection region is superimposed on the lower connection region. The above-mentioned problem was solved by adopting a joint structure of a folded plate roof plate.

The invention of claim 10 is the folded plate roof located on the water upper side in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8. The underwater end of the plate is placed so as to cover the entire drainage recess of the folded plate roof plate located on the underwater side, and the upper connection region is superimposed on the lower connection region. The above problem was solved by adopting a joint structure of folded plate roof plate.

According to the invention of claim 11, in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, the step portions are both. The above-mentioned problem is solved by forming a joint structure of a folded plate roof plate formed on the top surface portion and the region above the water side from the step portion is a stepped top surface portion one step lower than the other regions.

The invention of claim 12 is the underwater side in the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11. The joint structure of the folded plate roof plate is provided so that the lower connecting region portion is provided on one side of the folded plate roof plate on the water upper side and the upper connecting region portion is provided on the other side in the longitudinal direction. , The above problem has been solved.

In the invention of claim 1, the underwater of the folded plate roof plate located on the upper side of the water is located at a predetermined interval on the lower side of the bottom portion of the stepped portion of the folded plate roof plate located on the lower side of the water. Due to the configuration in which the upper connection area is overlapped with the lower connection area so that the side end is placed, the joint part between the folded plate roof plates adjacent to each other on the water upper side and the water side side is the bottom part. A gap is formed between the step and the bottom surface. Then, the rainwater infiltrated from the joint portion does not cause a capillary phenomenon due to the void portion, and the infiltration of rainwater can be blocked in the void portion.

In addition, the rainwater that has soaked into the void is gradually discharged to the outside through the drainage recess formed from the stepped portion toward the water bottom side of the bottom surface, and the rainwater collects in the void more than a certain amount. This can prevent rainwater from entering the room. Furthermore, rainwater is generated by arranging the strip-shaped sealing material orthogonally in the longitudinal direction on the bottom surface of the step of the folded plate roof plate located on the underwater side and on the underwater side of the folded plate roof plate adjacent to the upper side of the water. Even if a condition occurs in which a capillary phenomenon occurs due to an increase in water due to continuous infiltration in the void portion, the blocking property of the strip-shaped sealing material can prevent the infiltration of rainwater from the joint portion.

Further, in the invention of claim 1, a cut portion is formed in the upper portion of the lower seaming portion of the region corresponding to the bottom surface portion of the step, and the folded plate roof plate located on the upper side of the water and the folded plate roof plate located on the lower side of the water are formed. When the located folded plate roof plate overlaps, especially in the part where the lower seaming part overlaps with each other, the upper part of the lower seaming part of the folded plate roof plate located on the underwater side becomes the excised part. Therefore, it is possible to minimize the interference between the lower ridges that are in a superposed state on the lower side of the water and the lower side of the water, and to make the joint between the lower ridges in an extremely good state. In this way, it is necessary to construct the joints of the folded plate roof plates located on the upper and lower water sides that can sufficiently withstand the large typhoons that occur particularly frequently in recent years and the torrential rains that accompany them. Can be done.

If the band-shaped water expansion material is provided on the water upper side or the water bottom side of the band-shaped sealing material together with the band-shaped sealing material, the band-shaped water expansion material absorbs the rainwater even if rainwater invades the voids, and the rainwater. As the strip-shaped water expansion material expands due to absorption, it becomes substantially in close contact with the bottom surface portion and the step bottom surface portion, and further intrusion of rainwater can be blocked.

In the invention of claim 2, the drainage recess has a stepped portion at the upper end of the water and has the same surface as the bottom surface of the step, and the lower end of the drainage recess has the same surface as the bottom surface. In the invention of claim 3, the recessed bottom surface of the drainage recess has a rectangular shape, so that rainwater that has entered the gap can be discharged extremely efficiently. In the invention of claim 4, since the bottom surface of the recessed portion of the drainage recess has a triangular shape, it is possible to form a structure in which rainwater does not easily enter the gap and is easily discharged to the outside.

In the invention of claim 5, the bottom surface of the recess is a flat surface, and in claim 6, the bottom surface of the recess is an arcuate surface, so that rainwater that has entered the void can be smoothly discharged to the outside. In the invention of claim 7, two drainage recesses are provided and arranged on both sides in the width direction of the bottom surface portion, and in claim 8, three drainage recesses are provided and the bottom surface portion is provided. By arranging them on both sides in the width direction and in the middle in the width direction, a large amount of rainwater that has entered the void can be discharged to the outside, and it is possible to cope with heavy rain during a typhoon.

In the invention of claim 9, the underwater end portion of the folded plate roof plate located on the water upper side is placed by exposing a part of the drainage recess of the folded plate roof plate located on the water side. By superimposing the upper connecting region portion on the lower connecting region portion, rainwater that has entered the void portion can be discharged extremely efficiently.

In the invention of claim 10, the underwater end portion of the folded plate roof plate located on the water upper side is placed so as to cover the entire drainage recess of the folded plate roof plate located on the water side. Since the upper connection region is superimposed on the lower connection region, it is difficult for rainwater to infiltrate into the void, and even if a small amount of rainwater infiltrates into the void, a small amount of rainwater is discharged from the drain recess to the outside. It can be discharged gradually, and it is possible to prevent dust from entering the gap.

In the invention of claim 11, the stepped portion is formed on both of the top surface portions, and the region above the water side is adjacent to each other on the water upper side and the water bottom side by a configuration in which the stepped top surface portion is one step lower than the other regions. It is possible to easily connect the folded plate roof plates to each other. In the invention of claim 12, the lower connecting area portion is provided on one side in the longitudinal direction and the upper connecting area portion is provided on the other side of the folded plate roof plate on the water surface side and the water surface side, whereby the water surface is provided. It is extremely suitable for constructing a folded plate roof having a large number of joints by connecting a large number of plate roof plates in series from the side toward the underwater folding.

(A) is a schematic plan view of the present invention, and (B) is a schematic side view of a vertical section of the present invention. (A) is a perspective view in which a folded plate roof plate located on the underwater side and a folded plate roof plate located on the water upper side are to be connected at a joint portion, and (B) is a folded plate roof plate located on the underwater side. It is a vertical sectional side view which tries to connect a folded plate roof plate located on the water upper side. (A) is a perspective view in a state where the folded plate roof plate located on the underwater side at the joint portion and the folded plate roof plate located on the water upper side are connected, and (B) is located on the underwater side at the joint portion. A plan perspective view of the folded plate roof plate and the folded plate roof plate located on the upper side of the water connected, (C) is the X1-X1 arrow view of (B), and (D) is a large number of folded plate roof plates on the water. It is a schematic diagram of the state connected in series from the side to the underwater side. (A) is a perspective view of a folded plate roof plate located on the underwater side at the joint portion, (B) is an enlarged view of the (α) portion of (A), and (C) is a (α) portion of (A). It is an enlarged view of another embodiment. (A) is a plan perspective view of a folded plate roof plate located on the underwater side at the joint portion, (B) is a cross-sectional view taken along the line X2-X2 of (A), and (C) is (β) of (B). Part enlarged view, (D) is an enlarged cross-sectional view taken along the line X3-X3 of (A), and (E) and (F) are enlarged cross-sectional views of another embodiment of the view taken by an arrow X3-X3 of (A). (A) is a Y1-Y1 arrow-viewing end view of FIG. 5 (A), (B) is an enlarged view of the Y2-Y2 arrow-viewing end surface of FIG. 5 (A), and (C) is Y3-Y3 of FIG. 5 (A). Enlarged view of the end face of the arrow, (D) shows a state in which the lower part of the folded plate roof plate located on the upper side of the water is superimposed on the cut part of the lower part of the folded plate roof plate located on the lower side of the water at the joint part. The vertical sectional front view, (E) is a vertical sectional front view of a main part in which the folded plate roof plates adjacent to each other in the width direction are joined by tightening the lower and upper sections, and (F) is the joint portion. It is a plan perspective view of the embodiment in which three drainage recesses are provided in the folded plate roof plate located on the lower side of the water. (A) is an X4-X4 arrow cross-sectional view of FIG. 3 (B), (B) is an enlarged view of the (γ) portion of (A), and (C) is an enlarged view of the (δ) portion of (B). (A) is a perspective view of the folded plate roof plate located on the water upper side at the joint portion, and (B) is a plan perspective view of the folded plate roof plate located on the water upper side at the joint portion near the water side, (C). ) Is a perspective view of a folded plate roof plate provided with a lower connection area portion and an upper connection area portion. (A) is a perspective view of a joint portion in the second embodiment of the present invention, (B) is a cross-sectional view taken along the line X5-X5 of (A), and (C) is an enlarged view of portion (ε) of (B). be.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. INDUSTRIAL APPLICABILITY The present invention assumes that a metal folded-plate roof has a slope, and a joint portion when connecting a plurality of folded-plate roof plates in series in the longitudinal direction from the upper side of the water to the lower side of the water. It is related to the structure (joint structure). The main constituent members constituting the joint structure in the present invention are a folded plate roof plate A1 located on the water side adjacent to the water upper side and the water side, and a folded plate roof plate A2 located on the water upper side. It is provided with a strip-shaped sealing material (see FIG. 1).

The longitudinal direction of the folded plate roof plate A1 on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water is the extension when the folded plate roof is arranged from the upper side of the water to the lower side of the water. The existing direction, and the width direction is a direction horizontally orthogonal to the longitudinal direction. The longitudinal direction and the width direction of the folded plate roof plate A1 located below the water and the folded plate roof plate A2 located above the water are described in the main drawings.

The folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water are both a tightening type folded plate roof plate made of a metal material. Further, in construction, a structural material 71, a receiver 72, a hanger 73, and the like are also added as members constituting the present invention. The folded plate roof plate A1 located on the underwater side and the folded plate roof plate A2 located on the upper side of the water are adjacent to each other along the inclination direction of the underwater side and the upper side of the water, and are connected to form a folded plate roof. It is something to do.

The folded plate roof plate A1 on the lower side of the water and the folded plate roof plate A2 on the upper side of the water have a relative positional relationship with each other. That is, any of the folded plate roof plates adjacent to each other from the upper side of the water to the lower side of the water, as long as the other folded plate roof plate adjacent to the arbitrary folded plate roof plate is located on the upper side of the water. The folded plate roof plate is the folded plate roof plate A1 on the underwater side. Further, if the other folded plate roof plate adjacent to the arbitrary folded plate roof plate is located on the water side, the arbitrary folded plate roof plate is the folded plate roof plate A2 on the water side.

Therefore, as shown in FIG. 3D, when three or more folded plate roof plates are connected in series from the upper side of the water to the lower side of the water and a plurality of joint portions are provided, the upper side of the water is used. Except for the folded plate roof plates located at both ends on the underwater side, the folded plate roof plates located in the middle are the folded plate roof plate A1 located on the underwater side and the folded plate roof plate A2 located on the water upper side. It will be a folded plate roof plate that meets both of the requirements. When a large number of folded plate roof plates are connected in series from the upper side of the water to the lower side of the water, most of the folded plate roof plates used are the folded plate roof plate A1 located on the lower side of the water. It is a folded plate roof plate that meets the requirements of both the folded plate roof plate A2 located on the upper side of the water.

Therefore, in the description of the present invention, in the adjacent folded plate roof plate, the folded plate roof plate located on the underwater side is referred to as the folded plate roof plate A1 located on the underwater side in the adjacent folded plate roof plate, and the upper side of the water. The located folded plate roof plate is referred to as the folded plate roof plate A2 located on the upper side of the water. However, does any folded plate roof plate form a joint structure with another folded plate roof plate adjacent to the water upper side, or constitutes a joint structure with another folded plate roof plate on the water side. Depending on the above, the arbitrary folded plate roof plate is either the folded plate roof plate A1 located on the lower side of the water or the folded plate roof plate A2 located on the upper side of the water. Hereinafter, the folded plate roof plate A1 on the underwater side is simply referred to as the folded plate roof plate A1 located on the underwater side, and the folded plate roof plate A2 on the water upper side is simply referred to as the folded plate roof plate located on the water upper side. It is called A2.

There are two embodiments of the present invention. First, the first embodiment will be described with reference to FIGS. 1 to 8. The folded plate roof plate A1 located on the lower side of the water has a lower connecting region portion J1 at the upper end portion on the water side in the longitudinal direction thereof. Further, the folded plate roof plate A2 located on the upper side of the water has an upper connection region portion J2 at the lower end portion in the longitudinal direction thereof. The lower connection area portion J1 and the upper connection region portion J2 overlap each other at the joint portion constituting the joint portion between the folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water. , A region constituting the joint portion [see FIG. 1 (B), FIG. 3, etc.].

And, in most of the folded plate roof plates used in the present invention, except for the folded plate roof plate at the water upper end portion and the folded plate roof plate at the water lower end portion constituting the folded plate roof, substantially. Both the folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water are provided with a lower connecting area portion J1 and an upper connecting area portion J2. That is, the upper connecting area J2 is provided near the lower end of the folded plate roof plate A1 located on the lower side of the water, and the lower connecting area J1 is provided near the upper end of the water [Fig. 8 (Fig. 8). See C)].

As a result, in a large number of folded plate roof plates connected in series from the upper side of the water to the lower side of the water, the large number of folded plate roof plates located in the middle are the lower connecting area portion J1 and the upper connecting area portion J2. By having the above, it is possible to efficiently connect the folded plate roof plates adjacent to each other from the water upper side to the water lower side. In the folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water, the parts other than the lower connecting area portion J1 and the upper connecting area portion J2 are ordinary folding plates. Since it is the same as the roof plate, the code of each part is the same.

First, as shown in FIGS. 4 and 6A, the folded plate roof plate A1 located on the underwater side has inclined side surface portions 12 and 12 formed on both sides of the bottom surface portion 11 in the width direction. Top surface portions 13 and 13 are formed outward from the upper ends of the inclined side surface portions 12, 12, respectively, and a lower roof portion 14 is formed from the outer end of one of the top surface portions 13, and the other top surface portion 13 is formed. The upper face portion 15 is formed from the outer end.

The folded plate roof plate A2 located on the upper side of the water has inclined side surface portions 12 and 12 formed on both sides of the bottom surface portion 11 in the width direction. The folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water form a bottomed V-shape by the bottom surface portions 11 and the inclined side surface portions 12 and 12, respectively. [See FIG. 6 (A)]. Top surface portions 13 and 13 are formed outward from the upper ends of the inclined side surface portions 12 and 12, respectively, a lower face portion 14 is formed from the outer end of one of the top surface portions 13, and the outside of the other top surface portion 13. The upper face portion 15 is formed from the end.

Further, the lower plate 14 of each of the folded plate roof plate A1 located on the underwater side and the folded plate roof plate A2 located on the upper side of the water rises vertically or substantially vertically from one of the top surface portions 13b. Is formed, and the lower tightening portion 14a is formed from the upper end of the neck portion 14b [see FIGS. 6 (A) and 6 (C)]. Similarly, in the upper face portion 15, a face portion 15a that rises vertically or substantially vertically from the other top surface portion 13 is formed, and an upper face portion 15a is formed from the upper end of the face portion 15b [FIG. 6 (FIG. 6). A) See].

Then, in the connection between the folded plate roof plates A1 and A1 located on the underwater side adjacent to each other in the width direction, the folded plate roof plates A1 and A1 are located on another underwater side adjacent to the width direction on the lower seaming portion 14a of the lower seaming portion 14. The folded plate roof plate A1 located on the underwater side is connected to each other in the width direction by being tightened so that the upper tightening portion 15a of the upper plate 15 of the folded plate roof plate A1 overlaps with each other [FIG. 6 (E). )reference〕. Similarly, on the lower part 14a of the lower part 14 of the folded plate roof plates A2 located on the upper side of the water adjacent to each other in the width direction, the upper part 15 of the folded plate roof plate A2 located on the upper side of the other water. The upper tightening portions 15a are tightened so as to overlap each other, and the folded plate roof plates A1 located on the lower side of the water are connected to each other in the width direction.

In the lower connection region portion J1 of the folded plate roof plate A1 located on the lower side of the water, a step portion 24 is formed on the upper side of the water in the longitudinal direction and along the direction orthogonal to the longitudinal direction [FIG. 1 (B), See FIGS. 4, 5 (B), etc.]. The lower connection area portion is a combination of the portion on the water side in the longitudinal direction from the step portion 24 and the portion separated from the step portion 24 by a slight distance from the step portion 24 as a boundary. It is J1 (see FIGS. 2 and 4). The step portion 24 is formed by processing means such as press working, and has a substantially inclined surface. The step portion 24 is continuously formed over the bottom surface portion 11, both side surface portions 12, 12 and both top surface portions 13, 13 (see FIG. 4).

Next, in the region of the lower connection region portion J1, the lower portion 14a, which is the upper portion of the lower portion 14, is cut off. Specifically, the upper portion of the lower ridge portion 14 is excised from the position of the step portion 24 to a position separated by a predetermined interval toward the water bottom side. The region in which the lower tightening portion 14a is excised is referred to as the excised portion 14c [see FIGS. 4 (A) and 5 (A)]. Further, specifically, in the lower connection region portion J1, the cut portion 14c is cut above the center in the height direction of the lower tightening portion 14a, and the lower portion below the center is left [FIG. 4 (FIG. 4). A), (C), see FIG. 6 (B)]. In this way, the range in the longitudinal direction of the cut portion 14c coincides with or substantially coincides with the range in the longitudinal direction of the lower connection region portion J1. Alternatively, the excised portion 14c may be configured such that the lower tightening portion 14a is completely excised in the region of the lower connecting region portion J1.

Further, to explain the cut portion 14c continuously, when the folded plate roof plate A1 located on the lower side of the water and the folded plate roof plate A2 located on the upper side of the water are connected in series along the longitudinal direction, the folded plate roof plate A1 is connected to the upper side of the water. The lower connection area J2 (near the water bottom end) of the located folded plate roof plate A2 is the lower connection area J1 (water upper end) of the folded plate roof plate A1 located on the water side. It overlaps with the inner surface side of the cut portion 14c of the lower roof portion 14 (see FIGS. 3 (A) to (C) and FIG. 6 (D)].

Next, the folded plate roof plate A1 lower connection region portion J1 located on the underwater side has a step bottom surface portion 21, a step side surface portion 22, and a step top surface portion 23. The step bottom surface portion 21 and both step top surface portions 23, 23 are configured to be one step lower than the bottom surface portion 11 and both top surface portions 13, 13 in a normal region with the step portion 24 as a boundary. Further, both step side surface portions 22 and 22 are formed so as to extend one step outward from both sides in the width direction of the normal both side surface portions 12 and 12 via the step portion 24 (see FIG. 4). The step dimension between the bottom surface portion 11 and the step bottom surface portion 21 due to the step portion 24 is equal to or greater than the thickness of the metal material of the folded plate roof plate A1 located on the underwater side, and is preferably about the thickness of the metal material. It is preferably about twice as thick.

The folded plate roof plate A1 located on the underwater side has a drainage recess 25 formed so as to project from 24 steps toward the underwater side of the bottom surface 11 [FIGS. 1 and 2]. 2, see FIGS. 3 (A), 3 (B), 4, 5, 5, 6 (A), (F), etc.]. The drainage recess 25 is formed by overlapping the lower connection region J1 of the folded plate roof plate A1 located on the lower side of the water and the upper connecting region J2 of the folded plate roof plate A2 located on the upper side of the water. The rainwater that infiltrates into the gap portion S during rainfall and is about to accumulate is gradually discharged to the outside (see FIG. 7).

More specifically, the drainage recess 25 has a recessed bottom surface 25a, and the recessed bottom surface 25a has 24 stepped portions of the folded plate roof plate A1 as the water upper starting end and the starting end is the step bottom surface. The surface is the same as the portion 21, and the end of the recessed bottom surface 25a on the underwater side is flush with the bottom surface portion 11, and the recessed bottom surface 25a is an inclined surface (see FIG. 5).

The recessed bottom surface 25a of the drainage recess 25 is formed in a substantially rectangular shape such as a rectangle or a square [see FIGS. 4 (A), 4 (B), 5 (A)]. When the recessed bottom surface 25a is substantially rectangular, it is preferable that the long side thereof is set along the direction connecting the water surface side and the water surface side of the folded plate roof plate A1. Further, the recessed bottom surface 25a may be formed in a substantially triangular shape [see FIG. 4 (C)]. In this case, the triangular concave bottom surface 25a has its bottom portion located at the step portion 24 and the apex of the triangle located at the bottom surface portion 11.

The recessed bottom surface 25a of the drainage recess 25 is an inclined flat surface. Further, the recessed bottom surface 25a may be an arcuate surface. When the concave bottom surface 25a is an arcuate surface, it may be convex upward [see FIG. 5 (E)] or concave downward [see FIG. 5 (F)]. ..

A plurality of drainage recesses 25 are provided in the folded plate roof plate A1 located on the underwater side. Specifically, when two drainage recesses 25 are provided, they are arranged on both sides of the bottom surface portion 11 in the width direction [see FIG. 5 (A)]. At this time, the side surface portions 12 of the folded plate roof plate A1 are also used as the side surfaces of the drainage recess 25 on both sides in the width direction. In this case, the recessed bottom surface 25a is arranged on both sides of the bottom surface portion 11 in the width direction and in the middle in the width direction. Further, the drainage recesses 25 may be provided with 3 to 6 pieces, and may be further provided with a larger number.

Further, the underwater end of the folded plate roof plate A2 located on the upper side of the water is placed by exposing a part of the drainage recess 25 of the folded plate roof plate A1 located on the underwater side, and is placed in the lower connection area. The upper connection region portion J2 is superimposed on the portion J1 [see FIGS. 3 (A) and 3 (B), FIG. 7]. At this time, since a part of the drainage recess 25 is exposed, the rainwater that tends to collect in the gap S is always discharged during the rain [see FIG. 7 (C)].

Further, the underwater end of the folded plate roof plate A2 located on the upper side of the water is placed so as to cover the entire drainage recess 25 of the folded plate roof plate A1 located on the underwater side, and the lower connection area portion J1 is placed. The upper connection region portion J2 is superimposed on the roof (see FIG. 9). At this time, since the drainage recess 25 is completely covered by the folded plate roof plate A2, the rainwater that is about to collect in the gap S is gradually discharged [see FIG. 9C], but the drainage recess 25. It is possible to prevent the inflow of rainwater from the 25 and prevent the intrusion of dust into the gap S.

Then, in the step bottom surface portion 21, both step side surface portions 22, 22 and both step top surface portions 23, 23 in the lower connection region portion J1, the strip-shaped sealing material 3 is located on the underwater side of the folded plate roof plate A1 in the longitudinal direction. It is arranged orthogonally or substantially orthogonally to the relative. Then, when the folded plate roof plate A1 located on the water side and the folded plate roof plate A2 located on the water side are connected in a row in the longitudinal direction to form a joint portion, a step in the lower connection region portion J1 is formed. A substantially closed space is formed by the bottom surface portion 21, the step side surface portion 22, the bottom surface portion 11 of the upper connection region portion J2, and the strip-shaped sealing material 3 or the strip-shaped water expansion material 4. This space is referred to as a gap portion S (see FIGS. 3 and 7). The gap portion S may be provided with a band-shaped water expansion material 4 together with the band-shaped sealing material 3.

The band-shaped sealing material 3 is in the form of a substantially flat band tape, and has a predetermined distance between the intermediate step surface portion 25 and the water upper end portion, so that the step bottom surface portion 21, both step side surface portions 22, 22 and the strip-shaped sealing material 3 have a predetermined distance. It is attached over the top surfaces 23 and 23 of both steps [see FIGS. 4 (A) and 5 (A)]. Further, as will be described later, in the case of the embodiment in which the intermediate step surface portion 25 does not exist, the strip-shaped sealing material 3 has the step bottom surface portion 21, both step side surface portions 22, 22 and both steps at predetermined intervals from the step portion 24. It is attached over the top surface portions 23, 23.

The strip-shaped water expansion material 4 is substantially in the shape of a flat strip tape, similarly to the strip-shaped sealing material 3, and is adjacent to and in close proximity to the strip-shaped sealing material 3 and has a step bottom surface portion 21 and both step side surface portions 22. , 22 and both stepped top surfaces 23, 23 [see FIGS. 4 (A) and 5 (A)]. The band-shaped sealing material 3 and the band-shaped water expansion material 4 have an adhesive adhesive surface on the back surface, and the step bottom surface portion 21, both step side surface portions 22, 22 and both step top surface portions in the lower connection region portion J1. Can be easily attached to 23 and 23.

Alternatively, the strip-shaped sealing material 3 and the strip-shaped water expansion material 4 may not have a sticking surface, and may be of a type to be stuck by using an adhesive. The strip-shaped water expansion material 4 is made of a material capable of absorbing moisture and expanding, and specifically, a non-woven fabric having water absorption and expandability is used. As described above, the strip-shaped sealing material 3 and the strip-shaped water expansion material 4 are provided in the lower connecting region portion J1 of the folded plate roof plate A1 located on the underwater side, and are located on the water upper side on the lower connecting region portion J1. The upper connection region portion J2 of the folded plate roof plate A2 is overlapped.

The band-shaped water expansion material 4 absorbs moisture and expands, so that it adheres more firmly to the step bottom surface portion 21, the step side surface portion 22 and the bottom surface portion 11 in the gap portion S, and the gap is formed. Can be closed, the sealing performance can be improved, and the ingress of rainwater or moisture can be prevented. By using these strip-shaped sealing material 3 and strip-shaped water expansion material 4 in combination, extremely strong waterproofness can be ensured. When the band-shaped water expansion material 4 is provided in the lower connection region portion J1, it is preferable that the band-shaped sealing material 3 is located on the water upper side of the band-shaped water expansion material 4, but the band-shaped water expansion material 4 is used. It may be located above the water side of the band-shaped sealing material 3.

Further, in the folded plate roof plate A1 located on the lower side of the water, the folded plate roof plate A2 located on the upper side of the water, and the joint portion, only the strip-shaped sealing material 3 is used, and the strip-shaped water expansion material 4 may not be used. Further, only the strip-shaped water expansion material 4 may be used, and the strip-shaped sealing material 3 may not be used. When only one of the band-shaped sealing material 3 and the band-shaped water expansion material 4 is used, the selection of either is arbitrarily determined depending on the conditions such as the building and its surrounding environment.

In the first embodiment of the present invention, the folded plate roof plate A2 located on the water upper side is on the water bottom side in the longitudinal direction and on both side surface portions 12, 12 and both top surface portions 13 and 13 in the connection region portion J2 above the folded plate roof plate A2. , Folded pieces 16, 16, ... Are formed. Then, the underwater side of the folded plate roof plate A2 located on the water upper side is placed on the step portion 24 of the folded plate roof plate A1 located on the underwater side, and each bent piece 16 is placed on each step. It is arranged in 24 places. The bent piece 16 is an edge portion that is bent so as to expand outward in the width direction with respect to the side surface portion 12, and is bent downward with respect to the top surface portion 13. It is the edge part.

The bent piece 16 has a length of about 5 mm to about 10 mm, preferably about 7.5 mm, in the direction along the longitudinal direction of the folded plate roof plate A2 located on the upper side of the water. The bending angle of the bent piece 16 with respect to the side surface portion 12 and the top surface portion 13 is about 5 degrees to about 45 degrees with respect to the longitudinal extension line on the surface (upper surface side) side of the side surface portion 12 and the top surface portion 13. The bending angle is preferably about 25 degrees or around this.

Further, as will be described later, there is an embodiment in which the folded piece 16 is also formed on the bottom surface portion 11 of the folded plate roof plate A2 located on the upper side of the water. In this case, the bent piece 16 is bent downward with respect to the bottom surface portion 11, and its longitudinal dimension and bending angle are the same as the above-mentioned dimensions and bending angle. These numerical values are not limited, and are appropriately set according to the situation at the construction site.

Specifically, the tips of the folded pieces 16, 16, ... In the folded plate roof plate A2 located on the water upper side are the step portion 24 and the step side surface portion 22 of the folded plate roof plate A1 located on the water lower side. It is configured to bite into each corner of the step portion 24 and the step top surface portion 23. As a result, the fold located on the underwater side at the joint between the lower connection area J1 of the folded plate roof plate A1 located on the underwater side and the upper connection area J2 of the folded plate roof plate A2 located on the upper side of the water. The gap portion S is formed between the step bottom surface portion 21 of the plate roof plate A1 and the bottom surface portion 11 of the folded plate roof plate A2 located on the water upper side (see FIGS. 3 and 7).

When rainwater enters from the joint portion, the gap portion S touches the bottom surface portion 11 of the upper connection region portion J2 located above even if the rainwater collects on the step bottom surface portion 21 of the lower connection region portion J1. The structure is such that capillarity is unlikely to occur. This prevents rainwater that has entered from the joint portion from passing through the gap portion S and entering the room or leaking out. Further, the band-shaped sealing material 3 or the band-shaped water expansion material 4 can also be used in combination to firmly prevent further intrusion of rainwater.

In FIGS. 1 and 6 (E), reference numeral 71 is a structural material such as a beam and a purlin, reference numeral 72 is a receiver, reference numeral 73 is a tightening hanger, and reference numeral 73a is a hanger tongue piece. Is. FIG. 6E shows a hanger 73 in which the lower seaming portion 14 and the upper seaming portion 15 in the width direction of the underwater side folded plate roof plate A1 or the underwater side folded plate roof plate A2 are attached on the receiver 72. It shows a state of being fastened and fixed together with the hanging tongue piece 73a.

A1 ... Folded roof plate located on the underwater side, A2 ... Folded plate roof plate located on the upper side of the water,
11 ... bottom part, 12 ... side part, 13 ... top surface part, 14 ... lower face part, 14c ... excision part,
15 ... upper face, 16 ... bent piece, 23 ... step top, 24 ... step, 25 ... drainage recess,
25a ... concave bottom surface, 3 ... strip-shaped sealing material, J1 ... lower connection area, J2 ... upper connection area.

Claims (12)

Inclined side surfaces are formed on both sides of the bottom surface in the width direction, a top surface portion is formed outward from the upper ends of both side surface portions, a lower roof portion is formed from the outer end of one of the top surface portions, and the other. It is a joint structure on the water upper side and the water side of the folded plate roof plate in which the upper part is formed from the outer end of the top surface portion, and the folded plate roof plate located on the water side is on the water upper side in the longitudinal direction. Moreover, a step portion is formed along the width direction orthogonal to the longitudinal direction, a step bottom surface portion lower than the bottom surface portion is formed through the step portion, and the lower roof portion is underwater from the position of the step portion. A lower connection area portion provided with an excised portion whose upper portion is excised to a position separated by a predetermined distance toward the side, and a drainage recess formed from the step portion toward the underwater side of the bottom surface portion. The folded plate roof plate located on the upper side of the water has an upper connecting region portion formed on the lower side of the water in the longitudinal direction and at the ends of both side surface portions. , The underwater end of the folded plate roof plate located on the water upper side at a position separated by a predetermined distance on the underwater side of the bottom surface portion with the step portion of the folded plate roof plate located on the underwater side as a boundary. The upper connection area portion is superimposed on the lower connection area portion so that the portion is placed, and the step bottom portion of the folded plate roof plate located on the water bottom side and the folded plate roof adjacent to the water upper side. A folded plate roof characterized in that a strip-shaped sealing material is arranged on the underwater side of the plate along a width direction orthogonal to the longitudinal direction and is sandwiched between the lower connection region portion and the upper connection region portion. Plate joint structure. In the joint structure of the folded plate roof plate according to claim 1, the drainage recess has a stepped portion at the upper end of the water and is flush with the bottom surface of the step, and the lower end of the drainage recess is described above. A joint structure of a folded plate roof plate characterized by having a dented bottom surface having an inclined surface that is flush with the bottom surface portion. The joint structure of a folded plate roof plate according to claim 2, wherein the recessed bottom surface has a rectangular shape. The joint structure of a folded plate roof plate according to claim 2, wherein the recessed bottom surface has a triangular shape. The joint structure of a folded plate roof plate according to any one of claims 1, 2, 3 or 4, wherein the recessed bottom surface is a flat surface. The joint structure of a folded plate roof plate according to any one of claims 1, 2, 3 or 4, wherein the recessed bottom surface is an arcuate surface. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5 or 6, two drainage recesses are provided and arranged on both sides of the bottom surface portion in the width direction. The joint structure of the folded plate roof plate, which is characterized by being made. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5 or 6, three drainage recesses are provided, and both sides and the width of the bottom surface portion in the width direction are provided. A joint structure of a folded plate roof plate characterized by being arranged in the middle of the direction. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8, the underwater end portion of the folded plate roof plate located on the water upper side. Is characterized in that a part of the drainage recess of the folded plate roof plate located on the underwater side is exposed and placed, and the upper connection region portion is superimposed on the lower connection region portion. Joint structure of folded plate roof plate. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7 or 8, the underwater end portion of the folded plate roof plate located on the water upper side. Is placed so as to cover the entire drainage recess of the folded plate roof plate located on the underwater side, and the upper connecting region portion is superimposed on the lower connecting region portion. Roof plate joint structure. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, the step portions are formed on both top surface portions. A joint structure of a folded plate roof plate, characterized in that the region above the water side of the step portion is a step top surface portion that is one step lower than the other regions. In the joint structure of the folded plate roof plate according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, the folded plate on the lower side and the upper side of the water. A joint structure of a folded plate roof plate, characterized in that each of the roof plates is provided with the lower connecting region portion on one side in the longitudinal direction and the upper connecting region portion is provided on the other side.

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