Sleeve unit

Abstract

To reinforce a sleeve unit while preventing concrete installed on an upper surface of a steel plate from being damaged.SOLUTION: A sleeve unit 100 is provided with: a steel plate 110 with an upper surface 110U installed between beams on which concrete is installed; a piping sleeve 120 connected to an upper surface of an outer edge part 115 of a through hole 114 formed in the steel plate 110; reinforcement ribs 130A, 130B, 130C, 130D, 130E and 130F reinforcing the steel plate 110 connected to a lower surface of the steel plate 110; and a reinforcement plate 150 connected on an upper surface of an edge part 116 placed on the beams of the steel plate 110 and overlapping on end parts of deck receivers placed at end parts of the beams or at beams in a plan view.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a sleeve unit.

Background Art

[0002] Patent Document 1 discloses a technique related to a vertical pipe sleeve floor unit for risers, which enables smooth placement of floor concrete by accurately installing a sleeve for inserting a riser at a predetermined position before the reinforcement work for concrete placement at the floor portion where various risers penetrate in the piping work of medium and high-rise buildings. In this prior art, the vertical pipe sleeve floor unit includes a floor slab surrounded by a frame erected between beams and fixed to the beams, and a pipe sleeve erected at a predetermined position of the floor slab and through which the riser can penetrate, and the floor slab and the pipe sleeve are provided in an integral structure in advance.

[0003] Patent Document 2 discloses a technique related to a floor sleeve unit used when ducts or pipes and wirings used for air conditioning equipment, sanitary equipment, etc. in medium and high-rise buildings are communicated between floors. In this prior art, the floor sleeve unit is attached between beams, and a through-hole is opened at a required position of a floor panel on which concrete is placed on the upper surface, and a sleeve is fixed to the through-hole in a penetrating state or facing the through-hole.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In some cases, concrete is placed on the upper surface of the steel plate of the sleeve unit installed on the beam to construct a concrete slab. Further, in order to cope with the enlargement of the sleeve unit or the like, a reinforcing rib extending to the end portion installed on the beam may be joined to the upper surface of the steel plate. However, in this case, the reinforcing rib is embedded in the concrete. Therefore, in order to prevent the concrete from being damaged by the embedded reinforcing rib, for example, it may be necessary to increase the slab thickness.

[0006] In view of the above facts, an object of the present invention is to reinforce the sleeve unit while suppressing the loss of concrete placed on the upper surface of the steel plate.

Means for Solving the Problems

[0007] A first aspect is a sleeve unit including a steel plate installed between beams and having concrete placed on its upper surface, a pipe sleeve joined to the upper surface of the outer edge portion of a through hole formed in the steel plate, a reinforcing rib joined to the lower surface of the steel plate to reinforce the steel plate, and a reinforcing member joined to the upper surface of the side portion of the steel plate where the steel plate is installed on the beam and overlapping the end portion of the beam or the end portion of a deck receiver provided on the beam in a plan view.

[0008] In the sleeve unit of the first aspect, a reinforcing rib is joined to the lower surface of the steel plate on which concrete is placed on the upper surface. It is not easy to join a reinforcing rib to the end portion of the steel plate installed on the beam, but a reinforcing member overlapping the end portion of the beam or the end portion of a deck receiver provided on the beam is joined and reinforced to the upper surface of the side portion of the steel plate. Therefore, the sleeve unit is reinforced while suppressing the loss of concrete placed on the upper surface of the steel plate.

[0009] A second aspect is the sleeve unit according to the first aspect, wherein, in a plan view, the reinforcing member overlaps the reinforcing rib.

[0010] In the sleeve unit of the second aspect, since the reinforcing member overlaps the reinforcing rib, the sleeve unit is further reinforced.

Effects of the Invention

[0011] According to the present invention, the sleeve unit can be reinforced while suppressing the defect of the concrete placed on the upper surface of the steel plate.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0013] <Embodiment> A sleeve unit according to an embodiment of the present embodiment will be described. Here, two orthogonal horizontal directions are defined as the X direction and the Y direction, which are indicated by arrow X and arrow Y respectively. The vertical direction orthogonal to the X direction and the Y direction is defined as the Z direction, which is indicated by arrow Z. Also, when explaining each direction, it is the up-and-down direction in the state where the sleeve unit is installed.

[0014] [Structure] First, the structure of the sleeve unit according to an embodiment will be described.

[0015] As shown in FIGS. 5, 6, and 7, the sleeve unit 100 is installed on the beams 10 and 20 made of H-shaped steel.

[0016] As shown in FIGS. 1, 2, and 3, the sleeve unit 100 includes a steel plate 110, a pipe sleeve 120, reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G, and a reinforcing plate 150 (see FIGS. 1 and 3) as an example of a reinforcing member. Note that the thickness of the steel plate 110 in this embodiment is thinner than the thicknesses of the pipe sleeve 120 and the reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G, but it is not limited thereto.

[0017] A through hole 114 through which a pipe (not shown) is inserted is formed in the steel plate 110 constituting the sleeve unit 100. Note that the through hole 114 in this embodiment is rectangular in plan view (see FIG. 1), but it is not limited thereto. Also, the position and number of the through holes 114 formed are not limited.

[0018] The pipe sleeve 120 is formed in a rectangular frame shape in plan view (see FIG. 1), is joined to the outer edge portion 115 of the through hole 114 on the upper surface 110U of the steel plate 110, and protrudes upward.

[0019] In this embodiment, the reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G are made of angle members (channel steel) having an L-shaped cross section, but are not limited thereto (see also FIG. 4). Note that when it is not necessary to distinguish the reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G, they are referred to as the reinforcing rib 130. Also, in FIG. 4(A), in order to make the reinforcing ribs 130A and 130C easier to understand, the steel plate 110 and the reinforcing plate 150 described later are illustrated by imaginary lines.

[0020] In addition, in the present embodiment, a portion of the L-shaped reinforcing rib 130 joined to the lower surface 110L of the steel plate 110 is defined as a joint portion 132, and a portion protruding downward from the lower surface 110L is defined as a rib portion 134. Also, a boundary portion between the joint portion 132 and the rib portion 134 is defined as a corner portion 133.

[0021] The reinforcing rib 130 is joined to the lower surface 110L (see FIGS. 2 and 3) of the steel plate 110. Specifically, the reinforcing ribs 130A and 130B (see FIGS. 1 and 3) are joined to the short side portions of the outer peripheral portion (see also FIG. 4), and the reinforcing ribs 130C and 130D are joined to the long side portions of the outer peripheral portion (see also FIG. 4).

[0022] The reinforcing rib 130E is joined along the Y direction outside the X direction of the through hole 114. Note that the reinforcing rib 130E is joined between the reinforcing rib 130A and the reinforcing rib 130B. Also, the aforementioned reinforcing rib 130D is joined outside the X direction of the through hole 114.

[0023] The reinforcing ribs 130F and 130G are joined along the X direction on both sides in the Y direction of the through hole 114. The reinforcing ribs 130F and 130G are joined between the reinforcing rib 130E and the reinforcing rib 130D.

[0024] Note that such joining locations of the reinforcing rib 130 are merely examples and are not limited thereto. The joining locations of the reinforcing rib 130 may be appropriately joined to appropriate locations for reinforcing the steel plate 110 according to the specifications of the steel plate 110 (such as size and plate thickness) and the specifications of the through hole 114 (such as number, position, shape, and size). The reinforcing rib 130 reinforces, for example, to such an extent that no deflection occurs due to its own weight or to such an extent that an operator can stand on it when the sleeve unit 100 is installed on the beams 10 and 20 (see FIG. 5, etc.).

[0025] The reinforcing ribs 130A, 130B, 130C, 130D on the outer peripheral portion of the lower surface 110L of the steel plate 110 are joined such that the joints 132A, 132B, 132C, 132D extend outward from the corners 133A, 133B, 133C, 130D (see FIGS. 1 and 3 for the reinforcing ribs 130A, 130B, and see FIGS. 1 and 2 for the reinforcing ribs 130A, 130B).

[0026] In the present embodiment, the reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G are close to or in contact with each other and are not joined to each other. However, the reinforcing ribs 130A, 130B, 130C, 130D, 130E, 130F, 130G may be joined to each other.

[0027] As shown in FIG. 6, the joints 132A, 132B of the reinforcing ribs 130A, 130B joined to the side portions 116 on the short side erected on the beams 10, 20 are joined such that the width end portions 132AT, 132BT are spaced apart from the end surface 110T of the steel plate 110. Note that the end portion 112 is defined between the end surface 110T of the steel plate 110 and the width end portions 132AT, 132BT of the reinforcing ribs 130A, 130B.

[0028] As shown in FIGS. 1, 3, 5, and 6, the reinforcing plate 150 is joined to the side portions 116 on both outer sides in the Y direction, that is, on the short side erected on the beams 10, 20 on the upper surface 110U of the steel plate 110.

[0029] As shown in FIGS. 5 and 6, the width end portions 150T of the reinforcing plate 150 in the present embodiment are located at positions overlapping the joints 132A, 132B of the reinforcing ribs 130A, 130B and further slightly inside the corners 133A, 133B in a plan view.

[0030] As shown in FIG. 5, in this embodiment, one beam 10 (see FIG. 6(A)) is lower than the other beam 20 (see FIG. 6(B)). Therefore, in order to align the levels of the two, a deck receiver 30 is joined to the upper flange 22 of the other beam 20 (see FIG. 6(B)). The deck receiver 30 is adjusted such that the upper portion 32 is at the same height as the upper flange 12 of the beam 10. In this embodiment, the deck receiver 30 is composed of an angle material (angle steel) with an L-shaped cross section, but it is not limited thereto.

[0031] Then, by placing the end 112 of the steel plate 110 constituting the sleeve unit 100 on the upper flange 12 of one beam 10 (see FIG. 6(A)) and the upper portion 32 of the deck receiver 30 of the other beam 20, the sleeve unit 100 is installed between the beam 10 and the beam 20 (see also FIG. 7).

[0032] As shown in FIGS. 5, 6, and 7, in plan view, the reinforcing plate 150 overlaps the end 12T of the upper flange 12 of the beam 10 and the end 32T of the upper portion 32 of the deck receiver 30 provided on the beam 20.

[0033] As shown in FIG. 7, in this embodiment of the sleeve unit 100, a unit-side reference line 102 is drawn on the upper surface 110U of the steel plate 110 and the upper surface of the reinforcing plate 150, and a sticker 104 is attached to the upper surface 110U of the steel plate 110.

[0034] The unit-side reference line 102 is drawn along the Y direction, which is the erection direction, at a position of a reference distance L from the through hole 114. The sticker 104 describes the installation information for installing the sleeve unit 100. The installation information is, for example, information such as the floor, location, and orientation where the sleeve unit 100 is installed. In this embodiment, the sticker 104 is marked with "3F-1 ↓". This "3F-1" indicates installation in the first block on the third floor. The arrow direction indicates the orientation of the sleeve unit 100.

[0035] [Construction Method] Next, an example of the construction method will be described.

[0036] The sleeve unit 100 of this embodiment is prefabricated at a location different from a construction site such as a factory. Further, it is transported to the construction site with the unit side reference line 102 drawn and the sticker 104 attached.

[0037] Then, the carried-in sleeve unit 100 is placed on the upper flange 12 at the longitudinal end 112 of the steel plate 110 and the upper part 32 of the deck receiver 30 of the other beam 20, and installed between the beam 10 and the beam 20. At this time, this sleeve unit 100 is installed and its orientation is confirmed according to the description of "3F-1 ↓" on the sticker 104 for installation in the first block on the third floor.

[0038] The beam side reference line 14 is pre-drawn on the upper surface of the upper flange 12 of the beam 10. Then, the sleeve unit 100 is placed so that the unit side reference line 102 coincides with the beam side reference line 14.

[0039] Note that existing deck plates (not shown) are spanned between the beams 10 and 20 on both sides of the sleeve unit 100. Then, upper end bars, lattice bars, lower end bars, etc. are arranged on the sleeve unit 100 and the deck plate (not shown), and the concrete 50 (see FIGS. 2 and 3) is placed. Also, drain pipes or the like are piped into the pipe sleeve 120 of the sleeve unit 100.

[0040] [Function] Next, the function of this embodiment will be described.

[0041] In the sleeve unit 100, the reinforcing rib 130 is joined to the lower surface 110L of the steel plate 110 on which the concrete 50 is placed on the upper surface 110U. Therefore, since the reinforcing rib 130 is not embedded in the concrete 50 placed on the upper surface 110U of the steel plate 110, the loss of the concrete 50 is suppressed as compared with the case where the reinforcing rib 130 is joined to the upper surface 110U of the steel plate 110.

[0042] Further, although the reinforcing rib 130 is not joined to the end portion 112 of the steel plate 110 laid on the beams 10 and 20, a reinforcing plate 150 sized to overlap the end portion 12T of the upper flange 12 of the beam 10 and the end portion 32T of the upper portion 32 of the deck receiver 30 provided on the beam 20 is joined and reinforced to the side portion 116 on the upper surface 110U of the steel plate 110. Note that since the reinforcing plate 150 is joined only to the side portion 116, there is no or little influence on the loss of the concrete 50.

[0043] Therefore, the sleeve unit 100 is reinforced while suppressing the loss of the concrete 50 placed on the upper surface 110U of the steel plate 110.

[0044] Also, in the sleeve unit 100, since the reinforcing plate 150 overlaps the joint portion 132 of the reinforcing rib 130, it is effectively reinforced. Note that in the present embodiment, since the reinforcing plate 150 overlaps the rib portion 134 of the reinforcing rib 130, it is further effectively reinforced.

[0045] Further, a unit-side reference line 102 is drawn on the sleeve unit 100 manufactured at a factory or the like, and a sticker 104 is attached. Therefore, the sleeve unit 100 carried into the construction site can be easily installed in the correct position by the unit-side reference line 102 and the sticker 104.

[0046] <Modification Example> Next, a modification example of the present embodiment will be described.

[0047] [Construction Structure] In the modification example, the sleeve unit 100 is the same, but its installation structure is different.

[0048] As shown in Fig. 8(A), in the modified example, the deck receiver 40 is joined to the upper flange 22 of the lower beam 20. The upper part 42 of the deck receiver 40 is adjusted to be lower by the thickness of the joint 132 of the reinforcing rib 130 than the upper flange 12 of the beam 10. In other words, the upper part 42 of the deck receiver 40 is adjusted so that the steel plate 110 becomes horizontal with the joints 132A, 132B, 132C, 132D (see Fig. 8(B), Fig. 2, Fig. 3, Fig. 6, etc.) of the reinforcing ribs 130A, 130B, 130C, 130D placed thereon.

[0049] Also, as shown in Fig. 8(B), a slit-shaped notch 44 into which the rib portion 134C of the reinforcing rib 130C (see also Fig. 6) is inserted is formed in the upper part 42 of the deck receiver 40. Although not shown, a notch 44 into which the rib portion 134D of the reinforcing rib 130D (see Fig. 2, etc.) is inserted is similarly formed in the upper part 42 of the deck receiver 40. Further, in Fig. 8(B), the reinforcing plate 150 is not shown for clarity. Also, the joints 132A, 132C are shown by phantom lines.

[0050] [Operation] Next, the operation of the modified example will be described.

[0051] The joints 132A, 132C, 132D of the reinforcing ribs 130A, 130C, 130D are placed on the upper part 42 of the deck receiver 40. Therefore, the rigidity of the side portion 116 on the side where the deck receiver 40 is placed in the installed sleeve unit 100 is improved.

[0052] Note that a reinforcing plate 150 may not be joined to the side portion 116 on the side where the joints 132A, 132C, 132D of the reinforcing ribs 130A, 130C, 130D are placed.

[0053] [Others] Note that the present invention is not limited to the above-described embodiments.

[0054] For example, in the above embodiment, a rectangular through-hole 114 in plan view was formed, but the present invention is not limited to this. The shape of the through-hole may be other than rectangular, for example, circular, or a plurality of through-holes may be formed.

[0055] Also, for example, in the above embodiment, the reinforcing rib 130 was joined only to the lower surface 110L of the steel plate 110, but the present invention is not limited to this. Reinforcing ribs may be joined to both the lower surface 110L and the upper surface 110U of the steel plate 110. In this case as well, since the reinforcing rib joined to the upper surface 110U can be made smaller or the number of joining locations can be reduced compared to the case where the reinforcing rib is joined only to the upper surface 110U, the loss of the concrete 50 is suppressed accordingly.

[0056] Also, for example, in the above embodiment, the reinforcing rib 130 was composed of an L-shaped angle, but the present invention is not limited to this. The reinforcing rib may be composed of other than an L-shaped angle, for example, U-shaped steel, H-shaped steel, I-shaped steel, etc.

[0057] Also, for example, in the above embodiment, the width end portions 150T of the reinforcing plate 150 overlap the joining portions 132A, 132B of the reinforcing ribs 130A, 130B in plan view, and further, coincide with the corner portions 133A, 133B or are located slightly inside the corner portions 133A, 130B, but the present invention is not limited to this. In plan view, the reinforcing plate 150 only needs to overlap at least the end of the beam or the end of the deck receiving portion.

[0058] Also, for example, in the above embodiment, the pipe sleeve 120, the reinforcing rib 130, and the reinforcing plate 150 were pre-joined at the factory, but the present invention is not limited to this. For example, the reinforcing plate 150 may be joined as needed at the construction site. Alternatively, the reinforcing rib 130 and the reinforcing plate 150 may be joined as needed at the construction site.

[0059] Also, for example, in the above-described embodiment, the reinforcing member joined to the side portion 116 of the steel plate 110 was the reinforcing plate 150, but the present invention is not limited thereto. A member having a rib-shaped portion, for example, an L-shaped steel, a U-shaped steel, an H-shaped steel, etc. may be used. Further, a configuration in which rib-shaped portions along the erection direction (Y direction) are arranged at intervals in the orthogonal direction (X direction) may be employed. However, the rib-shaped portion of the reinforcing member should not protrude from the upper surface of the concrete 50.

[0060] Furthermore, the present invention can be implemented in various modes without departing from the gist thereof. Embodiments and modification examples can be implemented in appropriate combinations.

Explanation of Reference Numerals

[0061] 10 Beam 20 Beam 30 Deck Support 32T End 40 Deck Support 42T End 50 Concrete 100 Sleeve Unit 110 Steel Plate 110U Upper Surface 110L Lower Surface 112 End 114 Through Hole 115 Outer Edge Portion 116 Side Portion 120 Pipe Sleeve 130A Reinforcing Rib 130B Reinforcing Rib 130C Reinforcing Rib 130D Reinforcing Rib 130E Reinforcing Rib 130F Reinforcing Rib 132T End 150 Reinforcing Plate (an example of a reinforcing member)

Claims

1. A steel plate installed between beams and having concrete placed on its upper surface, A pipe sleeve joined to the upper surface of the outer edge of a through-hole formed in the steel plate, A reinforcing rib joined to the lower surface of the steel plate to reinforce the steel plate, A reinforcing member joined to the upper surface of the side portion of the steel plate installed on the beam and overlapping, in plan view, the end of the beam or the end of a deck receiver provided on the beam, A sleeve unit comprising the above.

2. In plan view, the reinforcing member overlaps the reinforcing rib, The sleeve unit according to claim 1.

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