Deck plate support material

Abstract

To provide a deck plate receiving material etc. capable of reducing the labor required for installing a mounting material for mounting a horizontal net etc. [Solution] The deck plate support material 1 has a deck plate mounting part 2 having a vertical part 21 fixed to the side surface 101 of a precast beam 100 and a horizontal part 22 on which the edge of a deck plate 200 is placed, and a mounting material 3 provided on the deck plate mounting part 2 for mounting a horizontal net 5. The mounting material 3 has a hook part 32 for hanging the horizontal net 5 below the deck plate mounting part 2.

Description

[Technical field]

[0001] The present invention relates to a deck plate support material for laying a deck plate. [Background technology]

[0002] A deck slab may be constructed by laying a deck plate between a pair of precast beams and pouring concrete on top of it. In this case, deck plate supports are fixed to the sides of each precast beam, and both edges of the deck plate are placed on these deck plate supports. This allows the deck plate to span between the pair of precast beams.

[0003] Until the deck plates are laid and the work scaffolding is completed, a horizontal net must be stretched between a pair of precast beams below the deck plates to prevent workers and materials from falling. Hanging fittings are provided on the precast beams as mounting materials for the horizontal net. The horizontal net is held in place by being hooked onto the hooks of the hanging fittings.

[0004] Examples of such hanging fittings are described in Patent Documents 1 and 2. The hanging fitting in Patent Document 1 is fixed to the side of a beam with screws, while the hanging fitting in Patent Document 2 is fixed by clamping the flange of a steel beam with a tightening bolt. Other hanging fittings include RC Net Hanger (registered trademark), which is fixed by screwing it into an insert installed in the side of a precast beam. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3247889 [Patent Document 2] Publication number 6-36170 Summary of the Invention [Problem to be solved by the invention]

[0006] Normally, many hanging jigs are required to place a horizontal net, and fixing these hanging jigs to the beams increases the amount of work required on-site and causes delays in the process.

[0007] The present invention has been made in consideration of the above problems, and aims to provide a deck plate support material etc. that can reduce the effort required to install mounting materials for attaching horizontal nets etc. [Means for solving the problem]

[0008] To achieve the above-mentioned objectives 1. The invention includes a deck plate mounting section having a vertical section fixed to the side of a precast beam and a horizontal section on which the edge of a deck plate is placed, and a mounting member for mounting a surface material for preventing falling, which is provided on the deck plate mounting section, and the mounting member has a hook portion for hanging the surface material below the deck plate mounting section. The deck plate mounting portion is an angle material having an L-shaped cross section, the mounting material is a J-shaped steel bar, and has a configuration in which the hook portion is continuous from the lower end of the straight portion, and an upper portion of the straight portion is welded to the vertical portion of the deck plate mounting portion. This is a deck plate support material characterized by the above.

[0009] In the deck plate support of the present invention, a mounting material for hooking and holding a surface material for preventing falls, such as a horizontal net, is provided on the deck plate mounting part on which the edge of the deck plate is placed. Therefore, the installation of the mounting material is completed at the same time as the deck plate mounting part is fixed to the side of the precast beam, reducing the labor required for installing the mounting material. In addition, the hooking part is located sufficiently far below the deck plate, so that the surface material hooked on the hooking part can be prevented from being burned by welding sparks during welding work on the deck plate.

[0010] The mounting material is ,before It is fixed to the deck plate mounting portion and cannot be removed. If the mounting material is to be left in the ceiling after the deck slab is constructed, or if the mounting material can be easily cut and removed, the manufacturing costs of the deck plate support material can be reduced by fixing the mounting material to the deck plate mounting portion so that it cannot be attached or removed.

[0011] The second invention has a deck plate mounting section having a vertical section fixed to the side of a precast beam and a horizontal section on which an edge of a deck plate is placed, and a mounting material for mounting a surface material for preventing falling, which is provided on the deck plate mounting section, and the mounting material has a hook section for hanging the surface material below the deck plate mounting section, The mounting material J The straight portion is a steel rod having a hook portion that is continuous with the lower end of the straight portion, and the upper portion of the straight portion is welded to the vertical portion of the deck plate mounting portion. 、 The upper end of the straight portion but The deck plate is abutted against the horizontal portion of the deck plate mounting portion. This is a deck plate support material characterized by the above. . By making the mounting material a J-shaped steel bar having the above-mentioned straight section and hook section, it becomes easy to manufacture the mounting material and fix it to the deck plate mounting section. Also, by butting the upper end of the straight section against the horizontal section of the deck plate mounting section, it becomes easy to manage the vertical position of the hook section.

[0012] The third invention is a deck plate mounting part having a vertical part fixed to the side of a precast beam and a horizontal part on which an edge of a deck plate is placed, and a mounting material for mounting a surface material for preventing falling, which is provided on the deck plate mounting part, and the mounting material has a hook part for hanging the surface material below the deck plate mounting part, The mounting material is detachably attached to a mounting jig fixed to the deck plate mounting portion. ,before The above mounting fixture is ,before The mounting member is disposed through the mounting jig, and the mounting member has a retaining portion for preventing the mounting member from falling off the mounting jig. This is a deck plate support material characterized by . If it is desired to remove the mounting material after the construction of the deck slab, the mounting material can be made detachable from the mounting jig fixed to the deck plate mounting part. The removed mounting material can be reused at another site. Furthermore, by providing the above-mentioned retaining part, it is possible to reliably prevent the mounting material from falling off the mounting jig. Effect of the Invention

[0013] According to the present invention, it is possible to provide a deck plate support material etc. that can reduce the effort required for installing mounting materials for attaching horizontal nets etc. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a diagram showing an outline of a deck plate support material 1. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Diagram 3] A figure showing the state in which the horizontal net 5 is hooked onto the hook portion 32 of the mounting material 3. [Figure 4] 13 is an example in which the tip of the hook portion 32 is inclined toward the straight portion 31. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] A diagram showing a deck plate support material 10b. [Figure 8] A diagram showing a deck plate support material 10c. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0016] [First embodiment] Fig. 1 is a schematic diagram of a deck plate receiving material 1 according to a first embodiment of the present invention. The deck plate receiving material 1 is fixed to a pair of concrete precast beams 100 when a deck slab is constructed by laying a deck plate 200 between the precast beams 100 and pouring concrete thereon. Fig. 1 shows a cross section of the deck plate receiving material 1 perpendicular to the beam axis direction of the precast beams 100. The beam axis direction of the precast beam 100 corresponds to the normal direction to the paper surface of Fig. 1.

[0017] The deck plate support material 1 is fixed to each of a pair of precast beams 100, and the deck plate 200 is bridged between the deck plate support materials 1 fixed to both precast beams 100. While Fig. 1 shows one of the pair of precast beams 100 and the deck plate support material 1 fixed to that precast beam 100, the other precast beam 100 and the deck plate support material 1 fixed to that precast beam 100 have a similar configuration.

[0018] As shown in FIG. 1, the deck plate receiving material 1 has a deck plate mounting portion 2 and a mounting material 3.

[0019] The deck plate mounting portion 2 is a member for mounting the edge of the deck plate 200. The deck plate mounting portion 2 has a vertical portion 21 fixed to the side surface 101 of the precast beam 100 in the beam axis direction, and a horizontal portion 22 on which the edge of the deck plate 200 is mounted.

[0020] In this embodiment, an angle iron is used as the deck plate mounting portion 2. The angle iron is a long steel material, and is arranged so that its longitudinal direction is aligned with the beam axis direction of the precast beam 100. The cross section of the angle iron perpendicular to the longitudinal direction is L-shaped, one side of which becomes the vertical portion 21 and the other side becomes the horizontal portion 22. The edge of the deck plate 200 is fixed to the horizontal portion 22 by welding.

[0021] Fig. 2 shows a cross section taken along line AA in Fig. 1. The vertical portion 21 of the deck plate mounting portion 2 is fixed to a side surface 101 in the beam axis direction of the precast beam 100 by a fixing device 4. The fixing device 4 is, for example, a headed bolt, the shaft of which is passed through a hole (not shown) in the vertical portion 21 and screwed into an insert (not shown) embedded in the side surface 101 of the precast beam 100. This makes it possible to tighten and fix the deck plate mounting portion 2 to the side surface 101 of the precast beam 100. The interval between the fixing devices 4 in the beam axis direction of the precast beam 100 is determined by factors such as the load acting on the deck plate 200 when pouring concrete.

[0022] The mounting material 3 is used to attach the horizontal net 5. As shown in Fig. 1, the mounting material 3 is made by bending a steel bar such as a reinforcing bar into a J shape, and has a configuration in which a hook portion 32 is continued from the lower end of a straight portion 31. The hook portion 32 is a portion in which the end of the steel bar is folded back into a hook shape, and is used to hook and hold the horizontal net 5. The mounting material 3 can be easily manufactured by performing ordinary bending processing on a steel bar.

[0023] The straight portion 31 extends vertically, and its upper portion is welded to the vertical portion 21 of the deck plate mounting portion 2. This fixes the mounting material 3 so that it cannot be detached from the deck plate mounting portion 2. As shown in Fig. 2, multiple mounting materials 3 are fixed to the precast beam 100 at intervals in the beam axis direction.

[0024] The welding work of the straight section 31 is carried out, for example, in a processing plant on the premises of the construction site of a building using the precast beam 100. Fixing of the deck plate mounting section 2 to the precast beam 100 is also carried out in a processing plant on the premises of the site, and the precast beam 100 with the deck plate support material 1 (deck plate mounting section 2 and mounting material 3) fixed thereto is lifted by a crane or the like and erected at the intended location. However, the work procedure is not limited to this. For example, the straight section 31 of the mounting material 3 may be welded to the deck plate mounting section 2 in advance in a factory outside the site.

[0025] The upper end of the straight portion 31 is abutted from below against the horizontal portion 22 of the deck plate mounting portion 2. This makes it possible to position the straight portion 31 during welding work of the straight portion 31, and makes it easy to manage the vertical position of the hook portion 32.

[0026] The hooking portion 32 is located below the deck plate mounting portion 2. The vertical length L1 of the hooking portion 32 is set so as to prevent the horizontal net 5 hooked on the hooking portion 32 from easily slipping off. The length L2 of the straight portion 31 is, for example, about 250 mm, and the hooking portion 32 continues from the straight portion 31 at a position about 250 mm lower than the horizontal portion 22 of the deck plate mounting portion 2. However, the length L2 is not limited to the above and can be determined in various ways as long as the hooking portion 32 is located below the deck plate mounting portion 2.

[0027] The horizontal net 5 is a fall prevention surface material for preventing workers and materials from falling, and is made of wire rods made of resin or the like combined into a net shape. The horizontal net 5 is installed after a pair of precast beams 100 are erected at the desired locations and before starting the installation work of the deck plate 200.

[0028] As shown in a perspective view in FIG. 3, the horizontal net 5 is hooked through the hook portions 32 into the mesh and placed between a pair of precast beams 100 at a height below the deck plate 200.

[0029] In this way, in the deck plate receiving material 1 of this embodiment, the mounting material 3 that hooks and holds the horizontal net 5 is provided on the deck plate mounting portion 2 on which the edge of the deck plate 200 is placed. Therefore, the installation of the mounting material 3 is completed at the same time as the deck plate mounting portion 2 is fixed to the side surface 101 of the precast beam 100, reducing the labor required for installing the mounting material 3. In addition, the hook portion 32 is positioned sufficiently far below the deck plate 200, so that the horizontal net 5 hooked on the hook portion 32 can be prevented from being scorched by welding sparks or the like during welding work performed on the deck plate 200.

[0030] Furthermore, by making the mounting material 3 a J-shaped steel bar having a straight portion 31 and a hook portion 32, it becomes easy to manufacture the mounting material 3 and fix it to the deck plate mounting portion 2. Furthermore, by arranging the upper end of the straight portion 31 so that it abuts against the horizontal portion 22 of the deck plate mounting portion 2, it becomes easy to manage the vertical position of the hook portion 32.

[0031] However, the present invention is not limited to the above embodiment. For example, the shape of the mounting material 3 is not limited to that shown in Fig. 1 etc. As an example, as shown in Fig. 4, the tip of the hook portion 32 of the mounting material 3 may be inclined so as to approach the straight portion 31. This makes it difficult for the horizontal net 5 to slip out of the hook portion 32.

[0032] Furthermore, the shape of the deck plate mounting portion 2 is not particularly limited as long as it has a vertical portion 21 that is fixed to the side surface 101 of the precast beam 100 and a horizontal portion 22 on which the edge of the deck plate 200 is placed.

[0033] In addition, in this embodiment, a mesh-like horizontal net 5 is provided as a surface material for preventing falls, but the surface material for preventing falls is not limited to the horizontal net 5, and it is sufficient if it has the function of preventing workers from falling or materials from falling.

[0034] Furthermore, in this embodiment, the mounting material 3 is fixed to the deck plate mounting portion 2 and cannot be detached from the deck plate mounting portion 2, but the mounting material may be detachably attached to the deck plate mounting portion 2. An example of a detachable mounting material will be described below as the second embodiment. The second embodiment will be mainly described in terms of configurations that differ from the first embodiment, and similar configurations will be denoted by the same reference numerals in the drawings, etc., and description thereof will be omitted.

[0035] [Second embodiment] Fig. 5(a) is a diagram showing a cross section of a deck plate receiving material 10 according to a second embodiment of the present invention, perpendicular to the beam axis direction of a precast beam 100. The beam axis direction of the precast beam 100 corresponds to the normal direction to the paper surface of Fig. 5(a).

[0036] As shown in Figure 5(a), the deck plate receiving material 10 has a deck plate mounting portion 2 and a mounting material 30. In addition to the straight portion 31 and hook portion 32, the mounting material 30 has a protruding portion 33 that protrudes horizontally from the upper end of the straight portion 31. The protruding portion 33 is provided on the opposite side of the hook portion 32 in a plan view.

[0037] As shown in Fig. 5(b), the protruding portion 33 is passed through the mounting jig 23 fixed to the underside of the horizontal portion 22 of the deck plate mounting portion 2. Fig. 5(b) shows a cross section taken along line BB in Fig. 5(a). The mounting jig 23 has a U-shaped cross section, and the protruding portion 33 of the mounting material 30 is passed through its interior.

[0038] The tip of the protruding portion 33 protrudes from the mounting jig 23 towards the precast beam 100. A retaining portion 34 is provided at the tip of the protruding portion 33 to prevent the mounting material 30 from falling off from the mounting jig 23. The retaining portion 34 is a plate-shaped member that protrudes downward from the tip of the protruding portion 33, and prevents the mounting material 30 from falling off by getting caught on the mounting jig 23.

[0039] The retaining portion 34 is rotatable within a vertical plane around an axis 331 passed through the tip of the protruding portion 33. When attaching or detaching the mounting member 30, the retaining portion 34 is rotated as shown by reference symbol 34' in Fig. 5(a) and positioned so as to extend in the same direction as the protruding portion 33. This allows the protruding portion 33 and the retaining portion 34 to be inserted into and removed from the mounting jig 23, thereby allowing the mounting member 30 to be attached or detached.

[0040] In this embodiment, the same effects as those of the first embodiment can be obtained. Moreover, by detachably attaching the mounting material 30 to the mounting jig 23, the mounting material 30 can be removed after the deck slab is constructed and can be reused at another site. Moreover, in this embodiment, by providing the above-mentioned slip-out prevention portion 34, the mounting material 30 can be reliably prevented from falling off the mounting jig 23.

[0041] On the other hand, in the first embodiment, the mounting material 3 is fixed to the deck plate mounting portion 2 and made non-detachable from the deck plate mounting portion 2, thereby making it possible to simplify the configuration relating to the fixing, such as by eliminating the need for the above-mentioned mounting jig 23. In cases where the mounting material 3 is to be left inside the ceiling after the deck slab is constructed, or where the mounting material 3 can be easily cut and removed, the manufacturing costs of the deck plate receiving material 1 can be reduced by fixing the mounting material 3 so that it is non-detachable from the deck plate mounting portion 2. Whether the mounting material is non-detachable or detachable from the deck plate mounting portion 2 can be determined taking into consideration the cost of the mounting material and its construction, the need to remove the mounting material, the number of times the mounting material can be reused, etc.

[0042] The removable mounting material is not limited to the example shown in Fig. 5(a). Fig. 6(a) shows a deck plate support 10a using another removable mounting material 30a in a cross section perpendicular to the beam axis direction of a precast beam 100. The mounting material 30a has a configuration in which protruding portions 33 and hooking portions 32 are continuous from above and below a straight portion 31, similar to the mounting material 30 described above, but a headed pin 35 that penetrates the protruding portion 33 and the mounting jig 24 is provided as a retaining portion to prevent the mounting material 30a from falling off the mounting jig 24.

[0043] Figure 6(b) shows a cross section taken along line CC in Figure 6(a). The mounting jigs 24 are a pair of plates arranged on both sides of the protruding portion 33 with a gap in the beam axis direction of the precast beam 100 (corresponding to the left-right direction in Figure 6(b)), and are fixed to the underside of the horizontal portion 22 of the deck plate mounting portion 2. A pin 35, which serves as a retaining portion, is provided so as to pass through the mounting jigs 24 and the protruding portion 33 that is passed between the mounting jigs 24.

[0044] A fall-prevention member 36 such as a clip is removably provided on the tip of pin 35 to prevent pin 35 from falling off from mounting jig 24 and protruding portion 33. Fall-prevention member 36 prevents pin 35 from falling off by getting caught on mounting jig 24. When removing mounting material 30a from mounting jig 24, fall-prevention member 36 is removed from pin 35, and pin 35 is pulled out from mounting jig 24 and protruding portion 33.

[0045] 7 shows a deck plate receiving material 10b using a detachable mounting material 30b in a cross section perpendicular to the beam axis direction of a precast beam 100. The mounting material 30b is a J-shaped steel bar having a straight portion 31 and a hook portion 32, and a male screw is provided on the upper portion of the straight portion 31. The male screw is screwed into a mounting jig 27 fixed to the underside of the horizontal portion 22 of the deck plate mounting portion 2, so that the mounting material 30b is detachably attached to the mounting jig 27.

[0046] The mounting jig 27 is a long nut, and is welded to the horizontal part 22 at a position away from the precast beam 100 so that the hook part 32, which rotates in a horizontal plane when the male screw is screwed in, does not interfere with the precast beam 100. If there is no problem with interference between the hook part 32 and the precast beam 100, it is also possible to fix the mounting jig 27 to the vertical part 21 of the deck plate mounting part 2.

[0047] 8 is a perspective view showing deck plate receiving material 10c using detachable mounting member 30c. In deck plate receiving material 10c, mounting jig 28 is fixed by welding or the like to vertical portion 21 of deck plate mounting portion 2. Mounting jig 28 is a cylindrical steel member having a C-shaped cross section with slit 281 provided in part of the circumferential direction.

[0048] Similar to the mounting members 30 and 30a, the mounting member 30c has a configuration in which the protruding portion 33 and the hook portion 32 are continuous from above and below the straight portion 31, but the protruding portion 33 is provided on the same side as the hook portion 32 in a plan view.

[0049] The mounting material 30c is inserted into the mounting jig 28 through the slit 281. The protrusion 33 is used as a retaining portion that prevents the mounting material 30c, which has been passed through the mounting jig 28, from falling off from the mounting jig 28. That is, a concave cutout 282 is provided at a portion of the upper end of the mounting jig 28 in the circumferential direction excluding the slit 281, and by accommodating the protrusion 33 of the mounting material 30c within the cutout 282, the mounting material 30c is prevented from falling off from the mounting jig 28.

[0050] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the technical ideas disclosed in this application, and it is understood that such examples also naturally belong to the technical scope of the present invention. [Explanation of symbols]

[0051] 1, 10, 10a, 10b, 10c: Deck plate support material 2: Deck plate placement area 3, 30, 30a, 30b, 30c: Mounting material 4: Fixtures 5: Horizontal net 21: Vertical section 22:Horizontal part 23, 24, 27, 28: Mounting fixture 31: Straight section 32: Hook section 33:Protrusion 34: Anti-slip part 35: Pin 36: Anti-falling parts 100: Precast beam 101: Side 200: Deck plate

Claims

1. A deck plate mounting portion having a vertical portion fixed to a side surface of the precast beam and a horizontal portion on which an edge portion of the deck plate is mounted; A mounting member for mounting a fall prevention surface material provided on the deck plate mounting portion; having The mounting material has a hook portion for hooking the face material below the deck plate mounting portion, The deck plate mounting portion is an angle material having an L-shaped cross section, The attachment member is a J-shaped steel rod having a configuration in which the hook portion is continuous with the lower end of the straight portion, A deck plate support material characterized in that the upper part of the straight portion is welded to the vertical portion of the deck plate mounting portion.

2. A deck plate mounting portion having a vertical portion fixed to a side surface of the precast beam and a horizontal portion on which an edge portion of the deck plate is mounted; A mounting member for mounting a fall prevention surface material provided on the deck plate mounting portion; having The mounting material has a hook portion for hooking the face material below the deck plate mounting portion, The attachment member is a J-shaped steel rod having a configuration in which the hook portion is continuous with the lower end of the straight portion, An upper portion of the straight portion is welded to the vertical portion of the deck plate mounting portion, A deck plate support material, characterized in that the upper end of the straight portion is abutted against the horizontal portion of the deck plate mounting portion.

3. A deck plate mounting portion having a vertical portion fixed to a side surface of the precast beam and a horizontal portion on which an edge portion of the deck plate is mounted; A mounting member for mounting a fall prevention surface material provided on the deck plate mounting portion; having The mounting material has a hook portion for hooking the face material below the deck plate mounting portion, The mounting material is detachably attached to a mounting jig fixed to the deck plate mounting portion, The mounting jig is disposed through the mounting material, The deck plate support material is characterized in that the mounting material has a stopper portion to prevent it from falling off the mounting jig.

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