Joining structure for deck plates and method for joining deck plates

Abstract

To provide a junction structure of a deck plate capable of stably realizing rigidity and yield strength against centrifugal distortion of support members between the deck plate and a support member.SOLUTION: A junction structure of a deck plate is provided with: a support member; a deck plate mounted on the support member and corrugated in a first direction; a plate-like member with thickness thicker than that of the deck place, placed opposite to the support member of the deck plate and extending in a second direction vertical to the first direction in a horizontal surface; and a welded part penetrating the deck plate and coming in contact with an inner wall surface of a through hole in a vertical direction formed in the plate-like member and the support member.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a joining structure of a deck plate and a method for joining a deck plate.

Background Art

[0002] A dry roof structure in which a corrugated deck plate is placed on a roof base material is known. For example, Patent Document 1 describes a technique in which a roof base material is attached to the lower surface side of a deck plate to form a roof body, and the roof base material is attached to a beam of a building covered with fireproof coating. In the technique described in Patent Document 1, drilling tapping screws are used to attach the deck plate to the roof base material. In addition to this, burn-out plug welding or drive-in studs can also be used to attach the deck plate to the roof base material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional technology as described above, the joint between the roof base material and the deck plate is not required to have a function other than fixing the deck plate to the roof base material. Specifically, the joint only needs to withstand the uplift load acting on the deck plate. On the other hand, in recent years, it has been considered to make the joint between the support member and the deck plate bear a greater load, specifically, for example, to function as a member that prevents rotational deformation of the deck plate.

[0005] However, in the conventional joints as described above, for example, when rotational deformation of the support member occurs, the deck plate may be locally pulled at the joint, and the joint structure may not be able to exhibit sufficient rigidity and strength stably.

[0006] Therefore, the present invention aims to provide a deck plate joining structure and a deck plate joining method that can stably exhibit rigidity and load-bearing capacity against rotational deformation of the support member between the deck plate and the support member. [Means for solving the problem]

[0007] [1] A deck plate joining structure comprising a support member, a deck plate placed on the support member and corrugated in a first direction, a plate-like member positioned on the opposite side of the deck plate from the support member, extending in a second direction perpendicular to the first direction in the horizontal plane, and having a plate thickness greater than that of the deck plate, and a welded portion that penetrates the deck plate and is in contact with the inner wall surface of a vertical through hole formed in the plate-like member and the support member. [2] The deck plate joining structure according to [1], wherein the plate-shaped member has a plurality of through holes arranged in a direction perpendicular to the corrugation direction of the deck plate, and the welded portion is formed in each of the plurality of through holes. [3] The deck plate joining structure according to [2], wherein the plate-shaped member is arranged across the joint of the deck plate in a direction perpendicular to the corrugation direction of the deck plate, and the through hole and the welded portion are arranged on both sides of the joint, respectively. [4] The deck plate joining structure according to [1], wherein the plate-shaped members include a plurality of plate-shaped members arranged in a direction perpendicular to the corrugation direction of the deck plate, and the welded portion includes a plurality of welded portions that are in contact with the inner wall surface of the through hole formed in each of the plurality of plate-shaped members and the support member. [5] The deck plate joining structure according to [4], wherein the plurality of plate-like members are arranged on both sides of the joint of the deck plate in a direction perpendicular to the corrugation direction of the deck plate. [6] The deck plate joining structure according to any one of [1] to [5], wherein the support member is an H-shaped steel extending in the direction of the corrugation of the deck plate and including first and second flanges and a web, the deck plate is placed on the face of the first flange opposite to the web, and the through hole and the weld are respectively positioned on the first flange on both sides of the web. [7] The deck plate joining structure according to any one of [1] to [5], wherein the support member is an H-shaped steel extending in the direction of the corrugation of the deck plate and including first and second flanges and a web, the deck plate is placed on the side of the first flange opposite to the web, and the through hole and the weld are positioned on the first flange only on one side of the web. [8] The deck plate joining structure according to [6] or [7], wherein the plate-shaped member is positioned at the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate. [9] The deck plate joining structure according to [1], wherein the plate-shaped member extends beyond the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate, and further comprises an additional welded portion in contact with the inner wall surface of a vertical through hole formed in the portion of the plate-shaped member that extends beyond the end of the deck plate and the support member.

[10] The deck plate joining structure according to [1], wherein the plate-shaped member extends beyond the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate, and further comprises an additional welded portion in contact with the end face of the plate-shaped member extending beyond the end of the deck plate and the support member.

[11] The deck plate joining structure according to any one of [1] to

[10] , wherein the welded portion is formed by the weld metal filled inside the through hole.

[12] A method for joining deck plates, comprising the steps of: placing a corrugated deck plate in a first direction on a support member; arranging a plate-shaped member on the opposite side of the deck plate from the support member, extending in a second direction perpendicular to the first direction in a horizontal plane, and having a plate thickness greater than the deck plate; and forming a welded portion that penetrates the deck plate and contacts the inner wall surface of a vertical through-hole formed in the plate-shaped member and the support member.

[13] The method for joining deck plates according to

[12] , wherein the welded portion is formed by a plug welding process in which weld metal is filled into the through-hole.

[14] The method for joining deck plates according to

[12] or

[13] , wherein the welded portion is formed by filling the holes and through holes in the deck plate with weld metal. [Effects of the Invention]

[0008] According to the above configuration, welds are formed not only between the deck plate and the support member, but also between the support member and the plate-like member. By forming welds between the plate-like member, which has a thicker plate thickness than the deck plate, and the support member, it is possible to prevent the deck plate from being locally pulled at the joint when the support member rotates and deforms, and the support member can stably exhibit rigidity and strength against rotational deformation. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of a deck plate joining structure according to one embodiment of the present invention. [Figure 2A] This is a cross-sectional view along line AA in Figure 1. [Figure 2B] This is a cross-sectional view along line BB in Figure 1. [Figure 2C] This is a cross-sectional view along the CC line in Figure 1. [Figure 3] This figure shows the state in which the support member has undergone rotational deformation in the example shown in Figure 1. [Figure 4A] This figure shows a modified example of an embodiment of the present invention. [Figure 4B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 5A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 5B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 6A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 6B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 7] It is a diagram showing a modification of an embodiment of the present invention. [Figure 8] It is a diagram showing a modification of an embodiment of the present invention. [Figure 9A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 9B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 10] It is a diagram showing a modification of an embodiment of the present invention. [Figure 11A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 11B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 12] It is a diagram showing a modification of an embodiment of the present invention. [Figure 13] It is a diagram showing a modification of an embodiment of the present invention. [Figure 14A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 14B] It is a diagram showing a modification of an embodiment of the present invention. [Figure 15A] It is a diagram showing a modification of an embodiment of the present invention. [Figure 15B] It is a diagram showing a modification of an embodiment of the present invention.

Modes for Carrying Out the Invention

[0010] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. In this specification and drawings, components having substantially the same functional configuration are denoted by the same reference numerals, and redundant descriptions will be omitted.

[0011] Figure 1 is a perspective view of a deck plate joint structure according to one embodiment of the present invention, and Figures 2A to 2C are cross-sectional views along lines AA, BB, and CC in Figure 1, respectively. In the illustrated example of the joint structure, the deck plate 1 is placed on the H-shaped steel 2, and the joint is formed by a bearing plate 3 and a welded part 4. The deck plate 1 is a corrugated thin plate with alternately arranged trapezoidal peaks 11 and groove bottoms 12 extending parallel to each other. The thickness of the deck plate 1 is, for example, 0.8 mm to 1.6 mm, but is not limited to this example. Multiple deck plates 1 may be laid side by side in the longitudinal or transverse direction of the H-shaped steel 2.

[0012] An example of a support member, the H-shaped steel beam 2, includes flanges 21A, 21B, and a web 22. The H-shaped steel beam 2 constitutes, for example, a purlin or beam in a building. In the illustrated example, the groove bottom 12 of the deck plate 1 rests on the side of the flange 21A opposite to the web 22. In each figure, the x-direction is the direction of the corrugation of the deck plate 1 (coinciding with the material axis direction of the H-shaped steel beam 2), the y-direction is perpendicular to the x-direction in the horizontal plane (coinciding with the width direction of the H-shaped steel beam 2), and the z-direction is the vertical direction. Note that the support member is not limited to an H-shaped steel beam; various types of structural steel, such as channel steel or angle steel, can be used as support members.

[0013] The bearing plate 3 is an example of a plate-shaped member that extends in a direction perpendicular to the corrugation direction (x direction) of the deck plate 1 (y direction), that is, parallel to the peaks 11 and groove bottoms 12. The thickness of the bearing plate 3 is greater than the thickness of the deck plate 1. The bearing plate 3 is positioned on the opposite side of the deck plate 1 from the H-shaped steel 2, which is a support member of the deck plate 1. More specifically, the bearing plate 3 is placed on the side of the deck plate 1 opposite to the side that contacts the flange 21A of the H-shaped steel 2 at the groove bottom 12. A vertical through hole 31 is formed in the bearing plate 3, and a welded portion 4 is formed by filling the inside of the through hole 31 with weld metal, for example, by snap-through plug welding. The welded portion 4 penetrates the groove bottom 12 of the deck plate 1 and contacts the inner wall surface of the through hole 31 and the flange 21A of the H-shaped steel 2. This welded joint 4 joins the inner wall surface of the through hole 31, the groove bottom 12 of the deck plate 1, and the upper surface of the flange 21A.

[0014] As already mentioned, since the deck plate 1 is a thin plate, the welded portion 4 can be formed by, for example, melting the deck plate 1 by plug welding and drilling a hole that connects the inside of the through hole 31 to the surface of the flange 21A. Therefore, in this embodiment, it is not necessary to pre-drill holes in the deck plate 1 at the joint. However, holes may be drilled in the deck plate 1 in places where alignment with support members is easy, such as the ends of the deck plate 1 or overlapping parts with other deck plates, or in places where more reliable welding is required. In this case, the welded portion 4 is formed by filling the pre-drilled holes and the inside of the through hole 31 in the deck plate 1 with weld metal.

[0015] In the embodiment described above, the welded joint 4 is formed not only between the deck plate 1 and the H-shaped steel 2, but also between the H-shaped steel 2 and the bearing plate 3. By forming the welded joint 4 between the bearing plate 3, which has a plate thickness greater than that of the deck plate 1, and the H-shaped steel 2, it is possible to prevent the deck plate 1 from being locally pulled at the joint when the H-shaped steel 2, which is a support member, rotates around the material axis, as shown in Figure 3, for example, and to stably exhibit rigidity and strength against rotational deformation of the support member.

[0016] This allows, for example, multiple deck plates 1 joined in the middle of the span of an H-beam 2 to be used as members that prevent rotational deformation of the H-beam 2 (e.g., lateral buckling stiffeners). This eliminates or reduces the need for additional stiffeners, offering advantages in terms of materials and processes. Although the above describes the case where deck plates 1 form a roof, deck plates can also be used as floors, for example. Furthermore, the support structure at both ends of the deck plate 1 shown in Figure 3 is schematic and does not necessarily limit the support structure of the actual deck plate. In addition, although the through-holes and welds 4 are positioned on the flange 21A directly above the web 22, similar effects can be obtained when the through-holes and welds are positioned on both sides of the web on the flange, as in the example described later, or when the through-holes and welds are positioned on only one side of the web on the flange.

[0017] The following describes modified examples of the embodiments of the present invention described above.

[0018] In the example shown in Figures 4A and 4B, the bearing plate 3 has a plurality of through holes 31A, 31B arranged in a direction perpendicular to the corrugation direction of the deck plate 1 (y-direction), and welded joints 4A, 4B are formed in each of the through holes 31A, 31B. In this case, by forming a plurality of welded joints 4A, 4B between the H-shaped steel 2, which is the supporting member, and the bearing plate 3, the supporting member can exhibit higher rigidity and strength against rotational deformation.

[0019] In the examples shown in Figures 5A and 5B, a bearing plate 3 having multiple through holes 31A, 31B, similar to Figure 4, is positioned across the joint J of deck plates 1A, 1B in a direction perpendicular to the corrugation direction of the deck plates (y-direction). The through holes 31A, 31B and welded joints 4A, 4B are positioned on both sides of the joint J, respectively. This configuration maintains the load transmission performance for each of the deck plates 1A, 1B, and allows for stable rigidity and strength against rotational deformation of the support member. Furthermore, it allows for stable maintenance of the butted state of deck plates 1A, 1B at the joint J.

[0020] In the example shown in Figures 6A and 6B, multiple bearing plates 3A and 3B are arranged in a direction perpendicular to the corrugation direction of the deck plate 1 (y-direction). In the illustrated example, a vertical through hole 31A is formed in bearing plate 3A, and a vertical through hole 31B is also formed in bearing plate 3B. Furthermore, a welded joint 4A is formed that penetrates the groove bottom 12 of the deck plate 1 and contacts the inner wall surface of the through hole 31A and the flange 21A of the H-shaped steel 2, and similarly, a welded joint 4B is formed that contacts the inner wall surface of the through hole 31B and the flange 21A. Even when multiple bearing plates 3A and 3B are arranged separately in this way, and welded joints 4A and 4B are formed between each bearing plate and the support member, local deformation around the welded joints is prevented, and the rigidity and load-bearing capacity can be stably exhibited against rotational deformation of the support member.

[0021] In the example described above with reference to Figures 4 to 6, the through holes 31A, 31B and welds 4A, 4B are positioned on the flange 21A of the H-shaped steel 2, which is the support member, on both sides of the web 22. With this configuration, joints are formed on both sides of the axis of symmetry in the width direction of the H-shaped steel 2, which is the support member, and the support member can exhibit stable rigidity and strength against rotational deformation. Note that the arrangement of the through holes 31A, 31B and welds 4A, 4B on the H-shaped steel 2 is not limited to these examples, and for example, as in the example described below, the through holes and welds may be positioned only on one side of the flange 21A with respect to the web 22.

[0022] In the example shown in Figure 7, a bearing plate 3B is positioned at the end of the deck plate 1A in the direction perpendicular to the corrugation direction (y-direction), and a welded joint 4B is formed in contact with the inner wall surface of the through hole 31B and the flange 21A. In this case as well, local deformation around the welded joint is prevented between the deck plate 1A and the H-shaped steel 2 which is the support member, and the rigidity and load-bearing capacity can be stably exhibited against rotational deformation of the support member.

[0023] In the example shown in Figure 8, a bearing plate 3 is positioned at the end of the deck plate 1A in a direction perpendicular to the corrugation direction (y-direction), and welded joints 4A and 4B are formed in each of the multiple through holes 31A and 31B in the bearing plate 3. The formation of a joint structure at the end of the deck plate 1A is the same as in the example in Figure 7, but in the example in Figure 8, multiple welded joints 4A and 4B are formed between the H-shaped steel 2, which is the support member, and the bearing plate 3, thereby enabling the support member to exhibit higher rigidity and strength against rotational deformation.

[0024] In the examples shown in Figures 9A and 9B, a fillet weld 5 is formed instead of the through hole 31A and weld 4A' in the example in Figure 8. The fillet weld 5 is an additional weld that contacts the end face of the portion of the bearing plate 3 that extends beyond the end of the deck plate 1B with the flange 21A. In this case as well, as in the example in Figure 8 above, the formation of the weld 4B and the fillet weld 5 between the H-shaped steel 2 and the bearing plate 3 allows the support member to exhibit stable rigidity and load-bearing capacity against rotational deformation.

[0025] In the example shown in Figure 10, the weld metal forming the welded joint 4C, which penetrates the deck plate 1 and is in contact with the inner wall surface of the through-hole 31 and the flange 21A of the H-shaped steel 2, is not filled to the upper end of the through-hole 31. Thus, even when the welded joint is formed by filling the inside of the through-hole 31 with weld metal, it is not always necessary to fill the weld metal to the upper end of the through-hole. As long as there is a sufficient area of ​​contact between the inner wall surface of the through-hole 31 and the weld metal, the support member can stably exhibit rigidity and load-bearing capacity against rotational deformation.

[0026] In the examples shown in Figures 11A and 11B, the welded portion 4D that penetrates the deck plate 1 and is formed in contact with the inner wall surface of the through hole 31 and the flange 21A of the H-shaped steel 2 is a fillet weld in contact with the inner wall surface of the through hole 31 and the flange 21A. In the embodiments of the present invention, the welded portion formed only needs to be in contact with the inner wall surface of the through hole 31 formed in the bearing plate 3 and the flange 21A, and does not necessarily need to be formed by filling the inside of the through hole 31 with weld metal. In the illustrated examples, the welded portion 4D, which is a fillet weld, is formed around the entire circumference of the through hole 31, but the welded portion 4D may be formed only on a part of the circumferential direction of the through hole 31 as long as there is a sufficient area for the inner wall surface of the through hole 31 and the weld metal to be in contact.

[0027] In the example shown in Figure 12, the groove bottoms 12 of the deck plates 1A and 1B are joined to the channel steel 6, which is joined to the flange 21A of the H-beam 2, via the bearing plate 3 and the weld 4. The channel steel 6 is positioned so that its bottom surface faces the deck plates 1A and 1B, and the deck plates 1A and 1B are joined to the bottom surface of the same channel steel 6 via the bearing plate 3 and the weld 4. The channel steel 6 is joined to the flange 21A of the H-beam 2 by a weld, for example, not shown. The channel steel 6 may be a lip channel steel. In this case, the H-beam 2 and the channel steel 6 constitute the support members for the deck plates 1A and 1B. The weld 4 penetrates the deck plates 1A and 1B respectively and contacts the inner wall surface of the through hole formed in the bearing plate 3 and the bottom surface of the channel steel 6. Furthermore, in the example shown in Figure 12, multiple bearing plates 3 are arranged perpendicular to the corrugation direction of deck plates 1A and 1B, and are positioned on both sides of the joint between deck plates 1A and 1B.

[0028] In the example shown in Figure 13, in a joint structure similar to that in Figure 12, instead of the ends of deck plates 1A and 1B butting together at the joint, a lap joint is formed where the ends overlap. Note that the lap joint can also be applied to the examples shown in Figures 5A and 5B above.

[0029] In the example shown in Figures 14A and 14B, the end of the deck plate 1B in the direction perpendicular to the corrugation direction (y-direction) lies on the surface of the flange 21A of the H-shaped steel 2. In this example, only the bearing plate 3B as in the example shown in Figure 6 is placed, and a welded joint 4B is formed that contacts the inner wall surface of the through hole 31B and the flange 21A. Even in this case, local deformation around the welded joint is prevented between the deck plate 1B and the H-shaped steel 2 which is the supporting member, and the rigidity and load-bearing capacity can be stably exhibited against rotational deformation of the supporting member.

[0030] In the examples shown in Figures 15A and 15B, similar to the example in Figure 14, the bearing plate 3 extends beyond the end of the deck plate 1B in a joint structure formed at the end in a direction perpendicular to the corrugation direction (y-direction). While a welded portion 4B similar to the example described above is formed in the through hole 31B on the part of the bearing plate 3 that is on the deck plate 1B, the welded portion 4A' formed in the through hole 31A on the part of the bearing plate 3 that extends beyond the end of the deck plate 1B contacts the inner wall surface of the through hole 31A and the flange 21A, but does not penetrate the deck plate. In this way, the bearing plate 3 extends beyond the end of the deck plate 1B, and multiple welded portions 4A', 4B are formed between the H-shaped steel 2 and the bearing plate 3, thereby enabling stable rigidity and load-bearing capacity against rotational deformation of the support member.

[0031] Preferred embodiments of the present invention have been described in detail above with reference to the attached drawings, but the present invention is not limited to these examples. It will be obvious to those skilled in the art to which the present invention belongs that various modifications or alterations can be conceived within the scope of the technical idea described in the claims, and these will naturally also be understood to fall within the technical scope of the present invention. [Explanation of symbols]

[0032] 1, 1A, 1B... Deck plate, 11... Ridge section, 12... Groove bottom section, 2... H-beam, 21A, 21B... Flange, 22... Web, 3, 3A, 3B... Bearing plate, 31, 31A, 31B... Through hole, 4, 4A, 4B, 4C, 4D... Welded section, 5... Fillet weld, 6... Channel steel.

Claims

1. Support member and A deck plate is placed on the support member and is corrugated in a first direction, A plate-shaped member is positioned on the opposite side of the deck plate from the support member, extending in a second direction perpendicular to the first direction in the horizontal plane, and having a plate thickness greater than the deck plate. The welded portion that penetrates the deck plate and contacts the inner wall surface of the vertical through hole formed in the plate-shaped member and the support member. A deck plate joining structure equipped with [a specific feature].

2. The plate-like member has a plurality of through holes arranged in a direction perpendicular to the corrugation direction of the deck plate, The deck plate joining structure according to claim 1, wherein the welded portion is formed in each of the plurality of through holes.

3. The plate-like member is positioned across the joints of the deck plates in a direction perpendicular to the corrugation direction of the deck plates. The deck plate joining structure according to claim 2, wherein the through hole and the welded portion are arranged on both sides of the joint, respectively.

4. The plate-like member includes a plurality of plate-like members arranged in a direction perpendicular to the corrugation direction of the deck plate, The deck plate joining structure according to claim 1, wherein the welded portion includes a plurality of welded portions that are in contact with the inner wall surface of the through hole formed in each of the plurality of plate-shaped members and the support member.

5. The deck plate joining structure according to claim 4, wherein the plurality of plate-like members are arranged on both sides of the joint of the deck plate in a direction perpendicular to the corrugation direction of the deck plate.

6. The support member is an H-shaped steel beam extending in the direction of the corrugation of the deck plate and including first and second flanges and a web. The deck plate is placed on the side of the first flange opposite to the web, The deck plate joining structure according to claim 1, wherein the through hole and the welded portion are respectively positioned on the first flange at positions on both sides with respect to the web.

7. The support member is an H-shaped steel beam extending in the direction of the corrugation of the deck plate and including first and second flanges and a web. The deck plate is placed on the side of the first flange opposite to the web, The deck plate joining structure according to claim 1, wherein the through hole and the welded portion are located on the first flange at a position on one side with respect to the web.

8. The deck plate joining structure according to claim 6 or claim 7, wherein the plate-shaped member is arranged at the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate.

9. The plate-like member extends beyond the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate, The deck plate joining structure according to claim 1, further comprising an inner wall surface of a vertical through hole formed in the portion of the plate-shaped member extending beyond the end of the deck plate and an additional welded portion in contact with the support member.

10. The plate-like member extends beyond the end of the deck plate in a direction perpendicular to the corrugation direction of the deck plate, The deck plate joining structure according to claim 1, further comprising an additional welded portion in contact with the end face of the plate-shaped member extending beyond the end of the deck plate and the support member.

11. The deck plate joining structure according to claim 1, wherein the welded portion is formed by weld metal filled inside the through hole.

12. A step of placing a corrugated deck plate in a first direction onto a support member, A step of arranging a plate-shaped member on the side of the deck plate opposite to the support member, which extends in a second direction perpendicular to the first direction in the horizontal plane and has a plate thickness greater than that of the deck plate, The process involves forming a welded portion that penetrates the deck plate and contacts the inner wall surface of the vertical through hole formed in the plate-shaped member and the support member. A method for joining deck plates, including [the specified element].

13. The method for joining deck plates according to claim 12, wherein the welded portion is formed by a plug welding process in which weld metal is filled into the through-hole.

14. The method for joining deck plates according to claim 12, wherein the welded portion is formed by filling the inside of pre-formed holes and through holes in the deck plate with weld metal.

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