Deck plate joining structure

Abstract

The present invention provides a deck plate joining structure that connects the raised portion of a deck plate to an installed object, and that can suppress the pulling out of the joining member connecting the deck plate and the installed object. [Solution] The deck plate joining structure 100 according to the embodiment is a deck plate joining structure 100 for joining an object 7 to the raised portion 11 of a deck plate 1 having a raised portion 11, inclined portions 13 that are connected on both sides of the raised portion 11 and inclined in different directions from each other, and a valley portion 12 connected to the inclined portion 13, and comprises a joining member 2 for joining the raised portion 11 and the object 7. The structure is characterized in that when the distance o is the distance from the top corner portion 11a in the width direction of the raised portion 11 to the joining member 2 and the thickness of the deck plate is t, the structure satisfies o / t ≤ 25.

Description

Technical Field

[0001] The present invention relates to a joining structure of a deck plate for joining a fixture to the mountaintop portion of a deck plate having a mountaintop portion, inclined portions that are continuous on both sides sandwiching the mountaintop portion and inclined in different directions from each other, and a valley portion continuous with the inclined portions.

Background Art

[0002] As a technique for installing fixtures such as a pedestal foundation of a solar panel on the upper side of a corrugated deck plate, for example, Patent Document 1 is disclosed. In the roof pedestal installation structure of Patent Document 1, the raised pedestal is disposed on a receiver from above a heat insulating material and a waterproof sheet, and is fixed to a deck plate that is a roof base by a screw member that penetrates the heat insulating material, the waterproof sheet, and the receiver from above.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a structure for installing a fixture such as a pedestal foundation of a solar panel on the mountaintop portion of a deck plate as in the disclosed technique of Patent Document 1, when an upward blowing load due to wind or the like is generated on the fixture, an upward out-of-plane deformation may occur in the mountaintop portion of the deck plate. If the out-of-plane deformation of the mountaintop portion of the deck plate progresses, the screw member that joins the deck plate and the fixture may be pulled out prematurely, and there is a risk that the deck plate and the fixture cannot be fixed.

[0005] This invention has been made in view of the above circumstances, and its purpose is to provide a deck plate joining structure that can suppress the pulling out of the joining member that joins the deck plate and the installed object, in a deck plate joining structure that joins the upper part of the deck plate and the installed object. [Means for solving the problem]

[0006] The deck plate joining structure according to the present invention is a deck plate joining structure for joining an object to the raised portion of a deck plate having a raised portion, inclined portions connected on both sides of the raised portion and inclined in different directions from each other, and valley portions connected to the inclined portions, and is characterized in that it comprises a joining member for joining the raised portion and the object to be installed, and when the distance o is the distance from the corner of the raised portion in the width direction of the raised portion to the center of the joining member and the thickness t of the deck plate, the structure satisfies o / t ≤ 25. [Effects of the Invention]

[0007] According to the present invention, a connecting member is provided to join the crest portion and the installed object. When the distance from the crest corner in the width direction of the crest portion to the connecting member is o, and the thickness of the deck plate is t, the condition o / t ≤ 25 is met. That is, the center of the shaft portion of the connecting member is positioned close to the crest corner. This improves the initial rigidity of the load (for example, the secant stiffness of the crest portion at 1 kN) compared to the case where o / t = 30. Therefore, even when an upward blowing load associated with the installed object is applied, out-of-plane deformation of the crest portion 11 of the deck plate 1 can be suppressed. As a result, the pulling out of the connecting member due to out-of-plane deformation of the crest portion can be suppressed. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view showing the joint structure of the deck plate according to the first embodiment, and the joint structure between the deck plate and the beam material in the first embodiment. [Figure 2] Figure 2 is a front view showing the deck plate joining structure according to the first embodiment and the joining structure between the deck plate and the beam member in the first embodiment. [Figure 3] Figure 3 is a plan view showing the deck plate joining structure according to the first embodiment and the joining structure between the deck plate and the beam material in the first embodiment. [Figure 4] Figure 4 is a plan view showing the joint structure of the deck plate according to the second embodiment. [Figure 5] Figure 5 is a plan view showing the joint structure of the deck plate according to the third embodiment. [Figure 6] Figure 6 is a front view showing the joint structure between the deck plate and the beam according to the second embodiment. [Figure 7] Figure 7 is a plan view showing the joint structure between the deck plate and the beam according to the second embodiment. [Figure 8] Figure 8 is a plan view showing the joint structure between the deck plate and the beam according to the third embodiment. [Figure 9] Figure 9 is a plan view showing the joint structure between the deck plate and the beam according to the fourth embodiment. [Figure 10] Figure 10 is a front view showing the joint structure between the deck plate and the beam according to the fifth embodiment. [Figure 11] Figure 11 is a plan view showing the joint structure between the deck plate and the beam according to the fifth embodiment. [Figure 12] Figure 12 is a plan view showing the joint structure between the deck plate and the beam according to the sixth embodiment. [Figure 13] Figure 13 is a plan view showing the joint structure of the deck plate according to the fourth embodiment. [Figure 14] Figure 14 is a plan view showing the joint structure between the deck plate and the beam in the seventh embodiment. [Figure 15] Figure 15 is a plan view showing the joint structure between the deck plate and the beam in the eighth embodiment. [Figure 16] Figure 16 is a plan view showing the joint structure between the deck plate and the beam in the ninth embodiment. [Figure 17] Figure 17 is a diagram illustrating the 1kN secant stiffness at the top of the mountain. [Figure 18] Figure 18 is a diagram showing the relationship between the distance o and the secant stiffness at 1 kN of the upper part of the mountain [Figure 19] Figure 19(a) is a diagram showing the relationship between the distance o and the ratio of the secant stiffness at 1 kN of the upper part of the mountain with o / t = 30 as a reference. Figure 19(b) is a diagram showing the relationship between the distance o and the ratio of the secant stiffness at 1 kN of the upper part of the mountain with o / t = 30 as a reference when the upper limit value of the vertical axis in Figure 19(a) is 4.0 (kN / mm). [Figure 20] Figure 20 is a diagram showing the relationship between o / t and the ratio of the secant stiffness at 1 kN of the upper part of the mountain with o / t = 30 as a reference. [Figure 21] Figure 21 is a photograph showing the specimens of Example 2. Figure 21(a) shows Specimen No. 1, and Figure 21(b) shows Specimen No. 2. [Figure 22] Figure 22 is a diagram showing the results of Example 2. [Figure 23] Figure 23 is a diagram for explaining the secant stiffness at 1 kN of the valley part [Figure 24] Figure 24 is a diagram showing the relationship between the distance v and the secant stiffness at 1 kN of the valley part [Figure 25] Figure 25 is a diagram showing the relationship between v / t and the ratio of the secant stiffness at 1 kN of the valley part [Figure 26] Figure 26 is a diagram showing the relationship between v / t and the ratio of the secant stiffness at 1 kN of the valley part with v / t = 15.8 as a reference. [Figure 27] Figure 27 is a diagram showing the results of Example 4.

Mode for Carrying Out the Invention

[0009] Hereinafter, some embodiments of this invention will be described while referring to the drawings.

[0010] (First Embodiment: Deck Plate Joint Structure 100) As shown in Figure 1, the deck plate joining structure 100 constitutes, for example, the roof of a structure. Installations 7, such as solar panels, are joined to the upper side of the deck plate 1. In addition, sheet materials 9, such as insulation and waterproofing materials, are provided on the upper side of the deck plate 1.

[0011] As shown in Figures 2 and 3, the deck plate joining structure 100 comprises a deck plate 1, an installation 7 joined to the upper side of the deck plate 1, and a joining member 2 that joins the deck plate 1 and the installation 7. The deck plate joining structure 100 may also comprise a beam member 8 positioned below the deck plate 1 and a joining member 3 that joins the deck plate 1 and the beam member 8.

[0012] The installed object 7 is, for example, the foundation for a solar panel mounting frame. The installed object 7 consists of a base plate 71 on which the connecting members 2 are provided, and support columns 72 provided on the base plate 71 for supporting the solar panel mounting frame, etc. The base plate 71 is formed, for example, in a rectangular shape in plan view.

[0013] The deck plate 1 is positioned above the beam member 8. The beam member 8 is, for example, a main body 81 made of H-shaped steel.

[0014] The deck plate 1 is a well-known deck plate having a wave shape in the width direction. The deck plate 1 has a peak portion 11, inclined portions 13 that are connected on both sides of the deck plate 1 in the width direction with the peak portion 11 in between and inclined in different directions from each other, and valley portions 12 connected to the inclined portions 13. The deck plate 1 may have fitting portions on both sides in the width direction for fitting with other deck plates 1.

[0015] The peak portion 11 has a pair of horizontal portions 111 and a downwardly curved V-shaped portion 112 between the pair of horizontal portions 111. The peak portion 11 may also consist only of the horizontal portions 111. The width of the peak portion 11 in the width direction of the deck plate 1 is, for example, 112 mm or more and 147 mm or less.

[0016] The valley section 12 has a horizontal section 121 and a bent section 122 that bends upward from the horizontal section 121. The valley section 12 may also consist only of the horizontal section 121. The bent section 122 may be provided with a fitting section for, for example, fitting with another deck plate 1.

[0017] The connecting member 2 connects the upper part 11 and the base plate 71 of the installed object 7. The connecting member 2 is driven into the upper part 11 and the base plate 71, for example, using screws. The connecting member 2 is positioned vertically above the beam member 8. By positioning the connecting member 2 vertically above the beam member 8, the stress acting on the connecting member 2 can be easily transmitted from the deck plate 1 to the beam member 8. This allows it to resist larger uplift loads. The connecting member 2 is positioned symmetrically in a plan view at the center of the base plate 71. By positioning the connecting member 2 symmetrically, it can resist the load more effectively.

[0018] The connecting members 2 are provided, for example, at two locations along the longitudinal direction of the deck plate 1. By arranging multiple connecting members 2, the load can be resisted more effectively. The connecting members 2 arranged along the longitudinal direction of the deck plate 1 are arranged symmetrically on both sides of the center of the width direction of the beam member 8 in a plan view. In the longitudinal direction of the deck plate 1, the length of the base plate 71 is T. In the longitudinal direction of the deck plate 1, the number of connecting members 2 is T / 15 or less. It is preferable that the connecting members 2 are provided at three or more locations along the longitudinal direction of the deck plate 1. The length T of the base plate 71 is, for example, 100 mm or more and 350 mm or less.

[0019] The connecting members 2 are arranged in a single row on both sides of the center of the width direction of the mountain portion 11.

[0020] The distance o from the top corner 11a in the width direction of the top section 11 to the joining member 2 is defined as the thickness t of the deck plate 1.

[0021] In this embodiment, the condition o / t ≤ 25 is satisfied. That is, the center of the shaft portion of the joining member 2 is positioned close to the peak corner portion 11a. As a result, the initial rigidity of the load (for example, the secant stiffness of the peak portion at 1kN) can be improved by 1.3 times or more compared to the case where o / t = 30. Therefore, even when an upward blowing load is applied due to the installed object 7, out-of-plane deformation of the peak portion 11 of the deck plate 1 can be suppressed. As a result, the pull-out of the joining member 2 due to out-of-plane deformation of the peak portion 11 can be suppressed.

[0022] In this embodiment, o / t ≤ 15 is satisfied. This makes it possible to improve the initial rigidity (e.g., the secant stiffness at 1kN on the crest) by more than three times compared to the case where o / t = 30. Therefore, even when an upward blowing load is applied due to the installed object 7, out-of-plane deformation of the crest portion 11 of the deck plate 1 can be further suppressed. As a result, the pull-out of the joint member 2 due to out-of-plane deformation of the crest portion 11 can be further suppressed.

[0023] In this embodiment, o / t ≤ 10 is satisfied. This makes it possible to improve the initial rigidity (e.g., the secant stiffness at 1kN on the crest) by more than seven times compared to the case where o / t = 30. Therefore, even when an upward blowing load is applied due to the installed object 7, out-of-plane deformation of the crest portion 11 of the deck plate 1 can be further suppressed. As a result, the pull-out of the joint member 2 due to out-of-plane deformation of the crest portion 11 can be further suppressed.

[0024] In this embodiment, o / t ≤ 6 is satisfied. This makes it possible to improve the initial rigidity (e.g., the secant stiffness at 1kN on the crest) by more than 19 times compared to the case where o / t = 30. Therefore, even when an upward blowing load is applied due to the installed object 7, out-of-plane deformation of the crest portion 11 of the deck plate 1 can be further suppressed. As a result, the pull-out of the joint member 2 due to out-of-plane deformation of the crest portion 11 can be further suppressed.

[0025] (First embodiment: Joint structure 200 between deck plate and beam member) As shown in Figure 1, the joint structure 200 between the deck plate and the beam constitutes, for example, the roof of the structure.

[0026] As shown in Figures 2 and 3, the joint structure 200 between the deck plate and the beam member comprises a deck plate 1, an installation 7 joined to the upper side of the deck plate 1, a joining member 2 that joins the deck plate 1 and the installation 7, a beam member 8 positioned below the deck plate 1, and a joining member 3 that joins the deck plate 1 and the beam member 8.

[0027] As shown in Figures 2 and 3, the connecting member 3 connects the horizontal section 121 of the valley 12 to the beam member 8. The connecting member 3 is driven into the horizontal section 121 and the beam member 8, for example, using screws.

[0028] The connecting members 3 are provided, for example, at three locations along the longitudinal direction of the deck plate 1. By arranging multiple connecting members 3, the load can be resisted more effectively. The connecting members 3 arranged along the longitudinal direction of the deck plate 1 are positioned in a plan view at the center of the width direction of the beam member 8 and symmetrically with respect to this center. By arranging the connecting members 3 symmetrically, the load can be resisted more effectively. The connecting members 3 are provided on the horizontal sections 121 on both sides of the installed object 7 in a plan view. By arranging the connecting members 3 on both sides of the installed object 7, the load can be resisted more effectively.

[0029] The connecting member 3 is preferably positioned close to the end of the beam member 8 in the width direction. Let B be the width of the beam member 8 in the width direction. The connecting member 3 positioned close to the end of the beam member 8 in the width direction is preferably positioned at a distance of less than B / 4 from the end of the beam member in the width direction. By positioning the connecting member 3 close to the end of the beam member 8 in the width direction, the load can be resisted more effectively.

[0030] The trough portion 12 has a trough end portion 12a on the side of the inclined portion 13 in the width direction of the trough portion 12, a horizontal portion 121 extending in the width direction from the trough end portion 12a, and a second end portion 12b on the side opposite to the trough end portion 12a in the horizontal portion 121. The bent portion 122 is bent toward the horizontal portion 111 side, and a part of the horizontal portion 121 is covered above by this bent portion 122 in plan view. The second end portion 12b is the end portion of the horizontal portion 121 of the portion not covered by the bent portion 122 in plan view.

[0031] Let the distance v from the trough end portion 12a to the joining member 3, the length L from the trough end portion 12a to the second end portion 12b, and the plate thickness t of the deck plate 1.

[0032] <​​​​​​​​​​

[0035] In this embodiment, v / t ≤ 8.3 is satisfied. This makes it possible to improve the initial rigidity of the load (for example, the secant stiffness of the valley section at 1kN) by more than 4.7 times compared to the case where v / t = 15.8. Therefore, even when an upward blow-up load is applied due to the installed object 7, out-of-plane deformation of the valley section 12 of the deck plate 1 can be further suppressed. As a result, the pull-out of the joint member 3 due to out-of-plane deformation of the valley section 12 can be further suppressed.

[0036] Although not shown in the diagram, the beam member 8 may consist of a main body 81 made of H-shaped steel and a support member provided above the main body 81. For example, the support member may be a channel steel with a U-shaped cross-section having a pair of flanges and a web connected to the pair of flanges. The support member is placed on the main body 81 made of H-shaped steel with the open side of the U-shape facing downwards. In this case, the valley portion 12 of the deck plate 1 is joined to the web of this support member via a connecting member 3.

[0037] (Second embodiment: Deck plate joining structure 100) Next, the deck plate joining structure 100 in the second embodiment will be described. Detailed explanations of configurations similar to those in the above-described embodiment will be omitted.

[0038] As shown in Figure 4, in the deck plate joining structure 100 of the second embodiment, the joining members 2 are arranged in two rows on each side of the center of the base plate 71 in the width direction of the deck plate 1.

[0039] The connecting members 2 are provided, for example, at four locations along the longitudinal direction of the deck plate 1.

[0040] The connecting members 2 are arranged in two rows on each side, with the center of the mountain-top portion 11 in the width direction in between.

[0041] In addition, in the deck plate joining structure 100, the joining member 3 that joins the deck plate 1 and the beam member 8 may be in any position.

[0042] (Third embodiment: Deck plate joining structure 100) As shown in Figure 5, in the deck plate joining structure 100 of the third embodiment, the joining members 2 are arranged in multiple rows in the width direction of the deck plate 1.

[0043] The connecting members 2 are arranged, for example, in a staggered pattern along the longitudinal direction of the deck plate 1. The connecting members 2 arranged along the longitudinal direction of the deck plate 1 are arranged symmetrically on both sides of the center of the width direction of the beam member 8 in a plan view.

[0044] The connecting members 2 are arranged in two rows on each side, with the center of the mountain-top portion 11 in the width direction in between.

[0045] (Second embodiment: Joint structure 200 between deck plate and beam) As shown in Figures 6 and 7, in the second embodiment of the joint structure 200 between the deck plate and the beam member, the joint members 3 are provided at, for example, three locations along the longitudinal direction of the deck plate 1. The joint members 3 arranged along the longitudinal direction of the deck plate 1 are positioned symmetrically with respect to the center of the beam member 8 in the width direction in a plan view. The joint members 3 are spaced apart from the ends of the beam member 8 in the width direction, and are positioned, for example, at a position B / 4 from the end of the beam member in the width direction.

[0046] In addition, in the joint structure 200 between the deck plate and the beam, the joint member 2 that connects the deck plate 1 and the base plate 71 may be in any position.

[0047] (Third embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 8, in the third embodiment of the joint structure 200 between the deck plate and the beam member, the joint member 3 is provided at, for example, one location along the longitudinal direction of the deck plate 1. The joint member 3 is positioned in the center of the beam member 8 in the width direction in a plan view. The joint member 3 is spaced apart from the end of the beam member 8 in the width direction, and is positioned, for example, at a position B / 2 from the end of the beam member in the width direction.

[0048] (Fourth embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 9, in the fourth embodiment of the joint structure 200 between the deck plate and the beam member, the joint members 3 are provided at, for example, three locations along the longitudinal direction of the deck plate 1. The joint members 3 arranged along the longitudinal direction of the deck plate 1 are positioned symmetrically with respect to the center of the beam member 8 in the width direction in a plan view. The joint members 3 are spaced apart from the ends of the beam member 8 in the width direction, for example, at a position less than B / 4 from the ends of the beam member in the width direction.

[0049] (Fifth embodiment: Joint structure 200 between deck plate and beam) As shown in Figures 10 and 11, in the fifth embodiment of the joint structure 200 between the deck plate and the beam member, the joint members 3 are arranged in a staggered pattern along the longitudinal direction of the deck plate 1. The joint members 3 arranged along the longitudinal direction of the deck plate 1 are positioned symmetrically with respect to the center of the beam member 8 in the width direction in a plan view. The joint members 3 are spaced apart from the ends of the beam member 8 in the width direction, for example, at a position less than B / 4 from the ends of the beam member in the width direction.

[0050] Of the connecting members 3 provided along the longitudinal direction of the deck plate 1, there are, for example, three connecting members 3 located close to the valley end 12a, and for example, two connecting members 3 located spaced apart from the valley end 12a.

[0051] The connecting members 3 may be arranged in two rows in the width direction of the deck plate 1.

[0052] (Sixth embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 12, in the joint structure 200 between the deck plate and the beam in the sixth embodiment, the joint members 3 are provided at three locations along the longitudinal direction of the deck plate 1. The joint members 3, which are arranged along the longitudinal direction of the deck plate 1, are positioned symmetrically with respect to the center in the width direction of the beam 8 in a plan view. The joint members 3 are spaced apart from the ends of the beam 8 in the width direction, for example, at a position less than B / 4 from the ends of the beam in the width direction.

[0053] Of the connecting members 3 provided along the longitudinal direction of the deck plate 1, there are, for example, three connecting members 3 located close to the valley end 12a, and there are, for example, three connecting members 3 located spaced apart from the valley end 12a.

[0054] The connecting members 3 may be arranged in two rows in the width direction of the deck plate 1.

[0055] (Fourth embodiment: Deck plate joining structure 100) As shown in Figure 13, in the deck plate joining structure 100 of the fourth embodiment, the base plate 71 and the beam member 8 may be offset from each other in the longitudinal direction of the deck plate 1.

[0056] (Seventh embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 14, in the seventh embodiment, the joint structure 200 between the deck plate and the beam member may be offset from the base plate 71 in the longitudinal direction of the deck plate 1. The joint member 3 is provided at, for example, one location along the longitudinal direction of the deck plate 1. The joint member 3 is spaced apart from the widthwise end of the beam member 8 and is positioned, for example, at a position B / 2 from the widthwise end of the beam member. The joint member 3 is provided at one location on each side of the base plate 71 in the widthwise direction of the deck plate 1.

[0057] (Eighth embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 15, in the eighth embodiment of the joint structure 200 between the deck plate and the beam member, the base plate 71 and the beam member 8 may be offset from each other in the longitudinal direction of the deck plate 1. The joint members 3 are provided at, for example, two locations along the longitudinal direction of the deck plate 1. The joint members 3 are arranged symmetrically with respect to the center of the beam member 8 in the width direction in a plan view. The joint members 3 are spaced apart from the ends of the beam member 8 in the width direction, and are positioned, for example, at a position less than B / 4 from the ends of the beam member in the width direction. The joint members 3 are provided at two locations on each side of the center of the base plate 71 in the width direction of the deck plate 1.

[0058] (9th embodiment: Joint structure 200 between deck plate and beam) As shown in Figure 16, in the joint structure 200 between the deck plate and the beam member in the ninth embodiment, the base plate 71 may be positioned vertically above the beam member 8. The joint members 3 are provided, for example, at two locations along the longitudinal direction of the deck plate 1. The joint members 3 are arranged symmetrically with respect to the center of the beam member 8 in the width direction in a plan view. The joint members 3 are spaced apart from the ends of the beam member 8 in the width direction, for example, at a position less than B / 4 from the ends of the beam member in the width direction. The joint members 3 are provided at two locations on each side of the center of the base plate 71 in the width direction of the deck plate 1.

[0059] Although some embodiments of this invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Furthermore, these embodiments can be combined as appropriate. In addition, this invention can be implemented in various novel forms other than those described above. Therefore, each of the above embodiments can be omitted, replaced, or modified in various ways without departing from the spirit of this invention. Such novel forms and modifications are included in the scope and spirit of this invention, as well as in the claims and equivalents of the claims. [Examples]

[0060] In Example 1, an analytical model was constructed in which the raised portion of the deck plate and the installed object were joined with screws, and the out-of-plane displacement of the raised portion of the deck plate was measured when an upward load was applied to the analytical model.

[0061] As shown in Figure 17, in Example 1, based on the relationship between the load and the displacement of the mountaintop (out-of-plane displacement of the mountaintop), the slope connecting the plot at a load of 1 kN and the origin was calculated as the secant stiffness of the mountaintop at 1 kN, as an example of the stiffness in the initial stage of loading.

[0062] In the analysis model, the distance o from the crest corner to the center of the screw was used as a parameter, and the secant stiffness at the crest corner at 1kN was calculated for each case. The analysis model was performed for deck plates with thicknesses t of 1.0 mm and 1.2 mm. Tables 1 and 2 show the results for deck plates with a thickness t of 1.0 mm, and Tables 3 and 4 show the results for deck plates with a thickness t of 1.2 mm.

[0063] [Table 1]

[0064] [Table 2]

[0065] [Table 3]

[0066] [Table 4]

[0067] As shown in Tables 1-4, Figures 18, 19(a), 19(b), and 20, the secant stiffness of the crest improved as the distance o from the crest corner to the screw core decreased.

[0068] In this embodiment, the condition o / t ≤ 25 is satisfied. That is, the position of the joint member is positioned close to the peak corner 11a. As a result, the secant stiffness of the peak section at 1kN can be improved by more than 1.3 times compared to the case where o / t = 30. Therefore, even when an upward uplift load is applied due to the installed object, out-of-plane deformation of the peak section of the deck plate can be suppressed. As a result, the pull-out of the joint member due to out-of-plane deformation of the peak section can be suppressed.

[0069] In this embodiment, the condition o / t ≤ 15 is met. This allows for a more than threefold improvement in the secant stiffness of the crest portion at 1kN compared to the case where o / t = 30. Therefore, even when an upward uplift load is applied due to the installed object, out-of-plane deformation of the crest portion of the deck plate can be further suppressed. As a result, the pull-out of the joint members due to out-of-plane deformation of the crest portion can be further suppressed.

[0070] In this embodiment, the condition o / t ≤ 10 is met. This allows for a more than seven-fold improvement in the secant stiffness of the crest portion at 1kN compared to the case where o / t = 30. Therefore, even when an upward uplift load is applied due to the installed object, out-of-plane deformation of the crest portion of the deck plate can be further suppressed. As a result, the pull-out of the joint members due to out-of-plane deformation of the crest portion can be further suppressed.

[0071] In this embodiment, the condition o / t ≤ 6 is met. This allows for a 1kN secant stiffness of the crest portion to be improved by more than 19 times compared to the case where o / t = 30. Therefore, even when an upward uplift load is applied due to the installed object, out-of-plane deformation of the crest portion of the deck plate can be further suppressed. As a result, the pull-out of the joint member 2 due to out-of-plane deformation of the crest portion 11 can be further suppressed. [Examples]

[0072] In Example 2, a test specimen was prepared by joining the raised portion of the deck plate to the installed object with screws, and the out-of-plane displacement of the raised portion of the deck plate was measured when an upward load was applied to the test specimen.

[0073] In Example 2, based on the relationship between the load and the displacement of the mountaintop (out-of-plane displacement), the slope connecting the plot at a load of 1 kN and the origin was calculated as the secant stiffness at 1 kN, as an example of stiffness in the initial stage of loading.

[0074] As shown in Figures 21(a) and 21(b), both specimen No. 1 and specimen No. 2 had 10 screws. The o / t values ​​were different for specimen No. 1 and specimen No. 2. In addition, specimen No. 1 had more screws near the ridged corner than specimen No. 2. The thickness t of the deck plate was 1.0 mm. Table 5 shows the results of Example 2.

[0075] [Table 5]

[0076] As shown in Table 5, the 1kN secant stiffness at the top of specimen No. 1 was higher than that of specimen No. 2. This indicates that the 1kN secant stiffness at the top of the crest can be improved by reducing the o / t value.

[0077] As shown in Figure 22, a comparison of the relationship between load and out-of-plane displacement for specimen No. 1 and specimen No. 2 revealed that specimen No. 1 could withstand a greater load than specimen No. 2. [Examples]

[0078] In Example 3, an analytical model was constructed in which the valleys of the deck plate and the beam members were joined with screws, and the out-of-plane displacement of the valleys of the deck plate was measured when an upward load was applied to the analytical model.

[0079] As shown in Figure 23, in Example 3, based on the relationship between the load and the displacement of the valley (out-of-plane displacement of the valley), the slope connecting the plot at a load of 1 kN and the origin was calculated as the secant stiffness of the valley at 1 kN, as an example of the stiffness in the initial stage of loading.

[0080] In the analysis model, the distance v from the end of the trough to the screw was used as a parameter, and the secant stiffness at 1 kN of the trough in each case was calculated. In the analysis model, the plate thickness t of the deck plate was analyzed for a thickness of 1.2 mm. Also, the cases of 1, 2, and 3 screws in the width direction of the beam material were analyzed. Tables 6 and 7 show the results of Example 3. Note that v / t = 15.8 is the center in the width direction of the trough.

[0081] [Table 6]

[0082] [Table 7]

[0083] As shown in Tables 6 and 7, Figures 24, 25, and 26, as the distance v from the end of the trough to the screw decreased, the secant stiffness at 1 kN of the trough improved.

[0084] In this embodiment, v < L / 2 is satisfied. That is, the position of the joining member is arranged closer to the end of the trough. Thereby, the secant stiffness at 1 kN of the trough can be improved. Therefore, even when an upward blowing load associated with the installed object acts, the out-of-plane deformation of the trough of the deck plate can be suppressed. As a result, the pulling out of the joining member due to the out-of-plane deformation of the trough can be suppressed.

[0085] In this embodiment, v / t ≤ 12.5 is satisfied. Thereby, compared with the case of v / t = 15.8, the secant stiffness at 1 kN of the trough can be improved by 2.0 times or more. Therefore, even when an upward blowing load associated with the installed object acts, the out-of-plane deformation of the trough of the deck plate can be further suppressed. As a result, the pulling out of the joining member due to the out-of-plane deformation of the trough can be further suppressed.

[0086] In this embodiment, v / t ≤ 10.4 is satisfied. This allows the secant stiffness of the valley section at 1kN to be improved by more than 2.6 times compared to the case where v / t = 15.8. Therefore, even when an upward uplift load is applied due to the installed object, out-of-plane deformation of the deck plate's valley section can be further suppressed. As a result, the pull-out of the joint members due to out-of-plane deformation of the valley section can be further suppressed.

[0087] In this embodiment, v / t ≤ 8.3 is satisfied. This makes it possible to improve the secant stiffness of the valley section at 1kN by more than 4.7 times compared to the case where v / t = 15.8. Therefore, even when an upward blow-up load is applied due to the installed object 7, out-of-plane deformation of the valley section of the deck plate can be further suppressed. As a result, the pull-out of the joint members due to out-of-plane deformation of the valley section can be further suppressed. [Examples]

[0088] In Example 4, a specimen was prepared by joining the valley section of a deck plate to a beam member with screws, and the out-of-plane displacement of the valley section of the deck plate was measured when an upward load was applied to the specimen. In addition, an installation object was attached to the ridge section of the specimen with screws.

[0089] In Example 4, based on the relationship between the load and the displacement of the valley (out-of-plane displacement of the valley), the slope connecting the plot at a load of 1 kN and the origin was calculated as the secant stiffness of the valley at 1 kN, as an example of stiffness in the initial stage of loading.

[0090] In the test specimens, the number of screws and the value of v / t were varied. The thickness t of the deck plate was set to 1.2 mm. Table 5 shows the results of Example 2.

[0091] [Table 8]

[0092] As shown in Table 8 and Figure 27, the stiffness of the secant line at 1kN in the valley can be improved by reducing the value of v / t. [Explanation of symbols]

[0093] 100: Deck plate joining structure 200: Joint structure between deck plate and beam material 1: Deck Plate 11: Upper part of the mountain 11a: Mountain top corner 111:Horizontal part 112: Bending section 12: Tanibe 12a: Valley end 12b: Second end 121:Horizontal part 122: Bent section 13: Inclined part 2: Joining member 3: Joining member 7:Installation 71: Base plate 72: Strut 8: Beam material 81: Main body o: Distance from the top corner to the joint member t: Thickness of the deck plate v: Distance from the end of the valley to the connecting member

Claims

1. A deck plate joining structure for joining an object to the raised portion of a deck plate having a raised portion, inclined portions on both sides of the raised portion that are connected and inclined in different directions from each other, and valley portions connected to the inclined portions, The mountain portion and the installed object are connected by a connecting member, When the distance from the top corner of the top of the mountain in the width direction to the joining member is o, and the thickness of the deck plate is t, The condition must be that o / t ≤ 25 A deck plate joining structure characterized by the following.

2. The condition 0 / t ≤ 15 must be met. The deck plate joining structure according to claim 1, characterized by the above.

3. The condition o / t ≤ 10 must be met. The deck plate joining structure according to claim 1, characterized by the above.

4. The condition must be that o / t ≤ 6 The deck plate joining structure according to claim 1, characterized by the above.

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