CN106193442A - Floor concrete slab and floor - Google Patents
Floor concrete slab and floor Download PDFInfo
- Publication number
- CN106193442A CN106193442A CN201510217109.5A CN201510217109A CN106193442A CN 106193442 A CN106193442 A CN 106193442A CN 201510217109 A CN201510217109 A CN 201510217109A CN 106193442 A CN106193442 A CN 106193442A
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- Prior art keywords
- floor
- concrete
- reinforcing bar
- cast
- slab
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000004567 concrete Substances 0.000 title claims abstract description 96
- 230000003014 reinforcing effect Effects 0.000 claims description 74
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000009415 formwork Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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- Panels For Use In Building Construction (AREA)
- Building Environments (AREA)
Abstract
It is an object of the invention to provide a kind of floor concrete slab and floor, it is possible to easily electric wire etc. is carried out distribution, it is possible to make the application property of floor improve.A kind of floor is with concrete slab (10), it is adjacent to be configured with multiple between the levels of building in the horizontal direction, and, cast-in-place concrete (5) is poured from top, by being structurally combined with this cast-in-place concrete (5), and construct floor (1), this floor concrete slab (10) including: main part (11), it bottom surface (11a) and upper surface (11b) of cast-in-place concrete to be poured (5) of including constituting the ceiling surface of lower floor；Flange part (12), it forms with the top circumference of main part (11), and, more prominent to side than the side of this main part (11) and be formed as flange shape.
Description
Technical Field
The present invention relates to a concrete slab for a floor (bed スラブ) and a floor.
Background
A floor slab formed by arranging reinforcing bars on a floor (a bed plate) made of precast concrete (プレキャストコンクリート) erected on a beam and pouring (placing) concrete on the concrete plate is known. Like this the concrete slab of pouring cast in situ concrete (a song コンクリート) from the top sets up between the upper and lower floor of building, plays a role as the bottom template when pouring cast in situ concrete to, also play a role as the ceiling (courtyard) part of lower floor.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-044215
Disclosure of Invention
However, when wiring of electric wires or the like is performed on the ceiling side of the floor slab, for example, a space for wiring is formed by disposing the ceiling material below the floor slab to form a double ceiling, or wiring of electric wires or the like is performed on the ceiling side of the floor slab by forming through holes for wiring protruding in a direction lower than the lower surface of the concrete slab and provided in a vertical wall structure (vertical wall structure) provided separately from the beams.
However, in order to wire electric wires and the like, it is necessary to provide a double ceiling or form a suspended wall structure separately, and it takes time and labor to construct a floor slab.
The invention aims to provide a concrete slab for a floor slab and the floor slab, which can easily perform wiring on electric wires and the like and can improve the construction performance of the floor slab.
A first aspect of the present invention is a floor slab concrete panel, for example, as shown in fig. 1 to 8, which is constructed by arranging a plurality of floor slabs adjacent to each other in a horizontal direction between upper and lower floors of a building, pouring cast-in-place concrete from above, and structurally joining the cast-in-place concrete to the cast-in-place concrete, the floor slab concrete panel including:
a main body portion including a bottom surface constituting a ceiling surface of a lower layer and an upper surface on which the cast-in-place concrete is to be poured;
and a flange portion integrally formed with an upper peripheral edge portion of the main body portion, the flange portion projecting laterally beyond a side surface of the main body portion and formed in a flange shape.
According to the invention described in the first aspect of the present invention, since the flange portion is formed integrally with the upper peripheral edge portion of the main body so as to protrude laterally beyond the side surface of the main body, when a plurality of floor slab concrete panels having such flange portions are arranged adjacent to each other in the horizontal direction, a concave space (for example, a concave space) which is surrounded by the side surface of the main body and the lower surface of the flange portion and is open downward is formed between the adjacent floor slab concrete panels. By using such a concave space, it is possible to easily wire electric wires (for example, electric wires) and the like, and for example, it is not necessary to form a double ceiling or a suspended wall structure, and therefore, workability of the floor slab can be improved.
In an invention according to a second aspect of the present invention, as shown in fig. 1, 3 to 8, for example, in a concrete slab for a floor according to the first aspect of the present invention, a through hole penetrating the main body portion in a short side direction is formed in the main body portion.
According to the invention described in the second aspect of the present invention, since the through hole penetrating the main body portion in the short side direction is formed in the main body portion, the wiring can be easily performed in the short side direction of the main body portion only by inserting the electric wire (for example, electric wire) or the like through the through hole. Further, since the concave spaces and the through holes formed between the adjacent concrete slabs for a floor are arranged so as to intersect with each other, if these are used in combination, the convenience in wiring of electric wires and the like is extremely high.
As shown in fig. 3 to 8, for example, in an invention according to a third aspect of the present invention, in a concrete slab for a floor slab according to a second aspect of the present invention, first reinforcing bars and second reinforcing bars are embedded in the main body portion, the first reinforcing bars being elongated in a longitudinal direction of the main body portion; and a second reinforcing bar that is joined to the first reinforcing bar so as to intersect the first reinforcing bar, and that is formed in a zigzag shape in which a joint portion to the first reinforcing bar is a trough portion, wherein the second reinforcing bar includes a protruding portion that protrudes upward from the upper surface of the main body, and the first reinforcing bar and the second reinforcing bar are arranged at positions that do not interfere with the through-hole.
According to the invention described in the third aspect of the present invention, since the first reinforcing bar and the second reinforcing bar are disposed at positions that do not interfere with the through-hole, the first reinforcing bar and the second reinforcing bar do not affect wiring of an electric wire (for example, an electric wire) or the like by the through-hole. Therefore, the electric wire and the like can be reliably wired regardless of the first reinforcing bar and the second reinforcing bar.
Further, the second reinforcing bars are formed in a zigzag shape having a valley portion as a joint portion to be joined to the first reinforcing bars, and include projecting portions projecting upward from the upper surface of the main body portion, so that the joined state between the concrete slab for a floor slab and the cast-in-place concrete can be reinforced by the second reinforcing bars.
In an invention according to a fourth aspect of the present invention, as shown in fig. 2, 5 to 8, for example, in a concrete slab for a floor slab according to the third aspect of the present invention, a peak portion of the protruding portion of the second reinforcing steel bar is joined to a third reinforcing steel bar formed in a lattice shape.
According to the invention described in the fourth aspect of the present invention, since the peak portion of the protruding portion of the second reinforcing bar is joined to the third reinforcing bar formed in the lattice shape, the state of connection between the slab concrete panel for a floor and the cast-in-place concrete can be reinforced by the third reinforcing bar.
A fifth aspect of the present invention is a floor slab, for example, as shown in fig. 1 to 8, in which a plurality of floor slab concrete panels according to any one of the first to fourth aspects of the present invention are arranged adjacent to each other in a horizontal direction between upper and lower floors of a building, and cast-in-place concrete is poured from above, wherein a concave space surrounded by a side surface of the main body and a lower surface of the flange and opened downward is formed between the adjacent floor slab concrete panels.
According to the invention described in the fifth aspect of the present invention, since the concave space surrounded by the side surface of the main body and the lower surface of the flange portion and opened downward is formed between the adjacent concrete slabs for a floor, it is possible to easily wire electric wires (for example, electric wires) and the like by using the concave space, and it is not necessary to form a double ceiling or a suspended wall structure, for example, and it is possible to improve workability of the floor.
As shown in fig. 6, for example, according to a floor slab of a fifth aspect of the present invention, the electric wire is wired in the concave space, and a lighting fixture connected to the electric wire is provided in the concave space.
According to the invention described in the sixth aspect of the present invention, since the electric wire is wired in the concave space, the concave space can be used as a place for accommodating the electric wire. Further, since the lighting fixture connected to the electric wire is provided in the concave space, for example, the amount of projection of the lighting fixture projecting downward can be suppressed as compared with a case where the lighting fixture is provided on the lower surface of the main body. This makes it possible to improve the appearance of the building by keeping the surrounding ceiling of the lower floor of the building located below the floor clean, and to reduce the feeling of pressure from above.
According to the present invention, wires and the like can be easily wired, and the workability of a floor can be improved.
Drawings
Fig. 1 is a plan view showing a part of a building provided with a floor.
Fig. 2 is a sectional view showing a floor in a part of a building.
Fig. 3 is a cross-sectional view of a floor slab concrete slab cut in a short-side direction.
Fig. 4 is a partially enlarged cross-sectional view of a floor slab concrete slab cut in a longitudinal direction.
Fig. 5 is a view illustrating a state before second reinforcing bars and third reinforcing bars of a concrete slab for a floor are joined.
Fig. 6 is a diagram illustrating a state in which cast-in-place concrete is poured.
Fig. 7 is a diagram for explaining an operation of inserting an electric wire through the through hole.
Fig. 8 is a diagram illustrating a state of a floor after wiring of electric wires and the like is completed.
Wherein,
1 floor slab
2 Beam
5 cast-in-place concrete
Concrete slab for 10 floor
11 body part
12 flange part
13 through hole
14 first reinforcing bar
15 second reinforcing bar
20 concave space
21 electric wire
22 Lighting appliance
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
As shown in fig. 1 to 8, a plurality of floor slab concrete panels 10 according to the present embodiment are disposed adjacent to each other in the horizontal direction between the upper and lower floors of the building, and a cast-in-place concrete 5 is poured from above and structurally joined to the cast-in-place concrete 5 to construct a floor slab 1. The upper layer is arranged above the floor slab 1, and the lower layer is arranged below the floor slab.
The floor slab 1 is installed so as to be erected on a plurality of beams 2 constituting a framework of a building. The plurality of beams 2 are supported by the lower-layer-side column 3, and support the upper-layer-side column 3. The plurality of beams 2 and the upper and lower columns 3 are structurally integrated.
The floor slab concrete slab 10 is made of precast concrete, and as shown in fig. 3 to 8, includes a main body portion 11 and a flange portion (フランジ portion) 12.
The main body 11 has a bottom surface 11a constituting a ceiling surface of a lower layer and an upper surface 11b on which the cast-in-place concrete 5 is to be poured.
The flange portion 12 is formed integrally with the upper peripheral edge portion of the main body portion 11, and is formed in a flange shape protruding further to the side than the side surface of the main body portion 11.
The area of the floor slab concrete slab 10 including the flange portion 12 and the upper surface 11b of the body portion 11 is set larger than the area of the bottom surface 11a of the body portion 11. The amount of protrusion of the flange portion 12 from the side surface of the body portion 11 to the side is equal over the entire circumference of the slab concrete panel 10.
Such a floor slab concrete slab 10 is formed in a convex shape (or hat shape) in side view or sectional view.
The main body 11 is formed with a through hole 13 penetrating the main body 11 in the lateral direction. The through hole 13 is an internal hollow portion of the pipe member 13a provided so as to penetrate the body portion 11. In addition, both end portions of the pipe member 13a are opened.
As shown in fig. 1, a plurality of through-holes 13 (tube members 13a) (four in fig. 1) are arranged at intervals in the longitudinal direction of the floor slab concrete panel 10.
Further, a first reinforcing bar 14 elongated in the longitudinal direction of the body 11 and a second reinforcing bar 15 joined to the first reinforcing bar 14 so as to cross the first reinforcing bar 14 are embedded in the body 11.
The first reinforcing bars 14 are straight reinforcing bars, and a plurality of (four in the present embodiment) reinforcing bars are buried at intervals in the short side direction of the body 11.
The second reinforcing bar 15 is a reinforcing bar formed in a zigzag shape (ジグザグ shape) including a peak portion 15b (an inverted V-shaped portion) and a valley portion 15c (a V-shaped portion), the valley portion 15c being a joint portion to the first reinforcing bar 14. The second reinforcing bars 15 are embedded in the main body 11 only in the trough portions 15c, and the portions projecting upward from the upper surface 11b of the main body 11 are projecting portions 15 a. The protruding portion 15a is to be embedded in the cast-in-place concrete 5.
The second reinforcing bars 15 are formed in a state where both ends are cut at the position of the peak portion 15b, and are joined to the second reinforcing bars 15 of the adjacent floor slab concrete plates 10. The height of one end of the second reinforcing bar 15 is set to be lower than the height of the other end and the peak of the peak 15b, and when a plurality of floor slabs 10 are arranged adjacent to each other in the horizontal direction, the other end is set to overlap the one end. The other end portion is formed to slightly protrude laterally from the flange portion 12. These one end portion and the other end portion are joined, so that the mountain portion 15b is formed.
As shown in fig. 4 and the like, the first reinforcing bars 14 and the second reinforcing bars 15 are arranged at positions where they do not interfere with the through-holes 13 (pipe members 13 a). That is, the through-holes 13 are formed so as to penetrate the body 11 in the short-side direction without interfering with the first reinforcing bars 14 and the second reinforcing bars 15.
As shown in fig. 5, 6, and the like, the peak 15b of the projection 15a of the second reinforcing bar 15 is joined to the third reinforcing bar 16 formed in a lattice shape. The third reinforcing bars 16 are also embedded in the cast-in-place concrete 5.
The floor slab 1 can be formed by using a plurality of floor slab concrete slabs 10 having the above-described structure.
That is, as shown in fig. 1 to 8, the floor slab 1 is formed by placing a plurality of floor slab concrete slabs 10 adjacent to each other in the horizontal direction between the upper and lower floors of the building and pouring cast-in-place concrete 5 from above.
In the example of fig. 2, an intermediate beam (beam 2) is provided at an intermediate position between the beams 2 and 2 provided at positions where the columns 3 and 3 are located, two floor slab concrete slabs 10 are erected between the three beams 2, and the floor slabs 1 are formed together. That is, the floor slab 1 is formed with two floor slab concrete plates 10 in a lump. However, the present invention is not limited to this, and as shown in fig. 1, the length of one floor slab concrete slab 10 may be set as the minimum unit of the length of the floor slab 1. The difference between the case of forming the floor slab 1 having the length of two floor slab concrete panels 10 and the case of forming the floor slab 1 having the length of one floor slab concrete panel 10 is whether or not two floor slab concrete panels 10 are continuously arranged by the intermediate beams 2, and there is no particular difference in workability and function of the floor slab 1.
That is, the description of the formation of floor slab 1 described in the present embodiment can be applied to both of floor slab 1 in the form of fig. 1 and floor slab 1 in the form of fig. 2.
To explain the formation of the floor slab 1 in more detail, the plurality of beams 2 on which the floor slab concrete slab 10 is erected have connecting reinforcements 2a projecting upward from the upper surface. The floor slab concrete slab 10 is erected on the plurality of beams 2 so that the flange portion 12 is placed on the upper surfaces of the plurality of beams 2.
A side formwork 4 is provided at a position of the plurality of beams 2 that contacts the outer periphery of the floor slab 1. That is, in forming the floor slab 1, the floor slab concrete slab 10 is used as a formwork on the bottom surface side, and the side formwork 4 is used as a formwork on the side surface side.
The third reinforcing bars 16 are joined to the mountain portions 15b of the second reinforcing bars 15 of the floor slab concrete panel 10 and also to the connecting reinforcing bars 2a of the plurality of beams 2. Thereby, the floor slab concrete slab 10 and the beam 2 are structurally connected.
When the respective reinforcing bars are connected in this manner and the periphery is surrounded by the form, the cast-in-place concrete 5 is poured as shown in fig. 4, and when a predetermined amount of cast-in-place concrete 5 is poured, the surface becomes flush as shown in fig. 5.
On the other hand, on the lower floor side of the building, a concave space 20 surrounded by the side surface of the main body 11 and the lower surface of the flange 12 and opened downward is formed between the adjacent floor slab concrete panels 10, 10.
Concave space 20 is formed to be recessed upward from bottom surface 11a of main body 11 constituting the lower ceiling surface. In the present embodiment, the electric wire 21 is wired in the concave space 20, and the lighting fixture 22 connected to the electric wire 21 is provided in the concave space 20.
Further, since the through holes 13 are also formed in the main body 11, for example, as shown in fig. 1, the concave spaces 20 formed between the adjacent floor slab concrete panels 10, 10 and the through holes 13 are arranged so as to intersect (that is, are arranged in a lattice shape). Since the through-hole 13 is formed to penetrate the body 11, it is not visible from the lower layer side.
The electric wire 2 is wired in the through hole 13 as shown in fig. 5. That is, since the wires 21 can be wired in both the concave space 20 and the through-holes 13, the wires 21 can be distributed over the ceiling of the lower floor.
In the present embodiment, the electric wire 21 is exemplified as the object passing through the through hole 13, but the present invention is not limited to this, and various wires including a communication line, a cell wire, a fluid conduit, a tube, or the like may be passed through the through hole.
As the lighting fixture 22 of the present embodiment, a lighting fixture 22 having an elongated shape is used along the concave space 20, but the lighting fixture 22 may not have an elongated shape, and the type of a fluorescent lamp, LED lighting, or the like is not particularly limited.
The lighting fixture 22 and the electric wire 21 are connected to the concave space 20, and the lower open portion of the concave space 20 is covered with the cover 23.
In maintenance (メンテナンス) of the electric wire 21, the lighting fixture 22, and the like, since the cover 23 can be removed and the work can be easily performed, the work of wiring work on the spot can be reduced.
The floor slab 1 of the above-described form can be formed by erecting a plurality of floor slab concrete panels 10 between a plurality of beams 2 so as to be adjacent to each other in the horizontal direction, and pouring cast-in-place concrete 5 in a formwork surrounded by the floor slab concrete panels 10 and the side formworks 4.
The electric wires 21 or the lighting fixtures 22 are appropriately provided in the concave spaces 20 formed between the plurality of floor slab concrete panels 10. The through-hole 13 is also appropriately wired with the electric wire 21 and the like.
According to the present embodiment, since the flange portion 12 is formed integrally with the upper peripheral edge portion of the main body portion 11 so as to protrude laterally from the side surface of the main body portion 11, when a plurality of floor slab concrete panels 10 having such flange portions 12 are arranged adjacent to each other in the horizontal direction, a concave space 20 surrounded by the side surface of the main body portion 11 and the lower surface of the flange portion 12 and opened downward is formed between the adjacent floor slab concrete panels 10, 10. By using such a concave space, it is possible to easily wire the electric wires 21 and the like, and for example, it is not necessary to form a double ceiling or a suspended wall structure, and therefore, workability of the floor slab 1 can be improved.
Further, since the through-hole 13 penetrating the main body 11 in the short-side direction is formed in the main body 11, the wiring can be easily performed in the short-side direction of the main body 11 only by inserting the electric wire 21 or the like through the through-hole 13. Further, since the concave spaces 20 and the through holes 13 formed between the adjacent floor slab concrete panels 10 and 10 are arranged so as to intersect with each other, the convenience in wiring electric wires and the like is extremely high when these are used in combination.
Further, since the first reinforcing bars 14 and the second reinforcing bars 15 are arranged at positions not interfering with the through holes 13, the first reinforcing bars 14 and the second reinforcing bars 15 do not affect the wiring of the electric wires 21 and the like by the through holes 13. Therefore, the wires and the like can be reliably wired regardless of the first reinforcing bars 14 and the second reinforcing bars 15.
Further, since the second reinforcing bars 15 are formed in a zigzag shape having valley portions 15c as joint portions to be joined to the first reinforcing bars 14, and have projecting portions 15a projecting upward from the upper surface 11b of the main body portion 11, the joint state between the slab concrete panel 10 and the cast-in-place concrete 5 can be reinforced by the second reinforcing bars 15.
Further, since the peak portions 15b of the projecting portions 15a of the second reinforcing bars 15 are joined to the third reinforcing bars 16 formed in a lattice shape, the joined state between the floor slab concrete panel 10 and the cast-in-place concrete 5 can be reinforced by the third reinforcing bars 16.
Further, since the concave space 20 enclosed by the side surface of the main body 11 and the lower surface of the flange portion 12 and opened downward is formed between the adjacent concrete slabs 10 and 10 for a floor, the electric wires 21 and the like can be easily wired by using the concave space 20, and for example, it is not necessary to form a double ceiling or a suspended wall structure, and workability of the floor 1 can be improved.
Further, the electric wire 21 is wired in the concave space 20, and thus the concave space 20 can be used as a housing place for the electric wire 21. Further, since the lighting fixture 22 connected to the electric wire 21 is provided in the concave space 20, for example, a projecting amount of the lighting fixture 22 projecting downward can be suppressed as compared with a case where the lighting fixture 22 is provided on the lower surface of the main body 11. This makes it possible to improve the appearance and reduce the feeling of pressure from above by making the periphery of the ceiling of the lower floor of the building located below floor 1 neat.
Claims (6)
1. A plurality of concrete slabs for floor slabs, which are disposed adjacent to each other in the horizontal direction between upper and lower floors of a building, cast-in-place concrete is cast from above, and the cast-in-place concrete is structurally joined to the cast-in-place concrete to construct a floor slab,
this concrete slab for floor includes:
a main body portion including a bottom surface constituting a ceiling surface of a lower layer and an upper surface to which cast-in-place concrete is to be poured;
and a flange portion integrally formed with an upper peripheral edge portion of the main body portion, the flange portion projecting laterally beyond a side surface of the main body portion and formed in a flange shape.
2. A concrete slab for floor slabs according to claim 1,
the body portion is formed with a through hole penetrating the body portion in the short side direction.
3. A concrete slab for floor slabs according to claim 2,
a first reinforcing bar that is elongated in a longitudinal direction of the body and a second reinforcing bar that is joined to the first reinforcing bar so as to intersect the first reinforcing bar and that is formed in a zigzag shape having a valley portion at a joint portion with the first reinforcing bar, the second reinforcing bar including a protruding portion that protrudes upward from the upper surface of the body,
the first reinforcing bar and the second reinforcing bar are disposed at positions that do not interfere with the through-hole.
4. A concrete slab for floor slabs according to claim 3,
third reinforcing bars formed in a lattice shape are joined to the peaks of the protruding portions of the second reinforcing bars.
5. A floor slab comprising a plurality of floor slab concrete panels according to any one of claims 1 to 4 disposed adjacent to each other in a horizontal direction between upper and lower floors of a building and cast-in-place concrete poured from above,
between adjacent concrete slabs for a floor, a concave space is formed which is surrounded by a side surface of the main body and a lower surface of the flange and is open downward.
6. A floor slab as claimed in claim 5,
an electric wire is wired in the concave space, and a lighting fixture connected to the electric wire is provided in the concave space.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-258236 | 2014-12-22 | ||
| JP2014258236A JP2016118047A (en) | 2014-12-22 | 2014-12-22 | Floor slab concrete plate and floor slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106193442A true CN106193442A (en) | 2016-12-07 |
Family
ID=56242833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217109.5A Pending CN106193442A (en) | 2014-12-22 | 2015-04-30 | Floor concrete slab and floor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2016118047A (en) |
| CN (1) | CN106193442A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219366B (en) * | 2019-03-18 | 2023-11-07 | 江西万和建筑科技有限公司 | Assembled building heat preservation formwork integrated structure and construction method |
| CN114934621A (en) * | 2022-07-21 | 2022-08-23 | 中国船舶重工集团国际工程有限公司 | Composite floor system for box plate assembly type building and installation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462677A (en) * | 1977-10-28 | 1979-05-19 | Ohbayashigumi Ltd | Method and apparatus for installing ceilling lighting device |
| CN2749982Y (en) * | 2004-10-15 | 2006-01-04 | 张国平 | Composite hard plastic floor |
| CN201087492Y (en) * | 2007-08-07 | 2008-07-16 | 曾国华 | Floor structure of combined steel bearing plate |
| CN202416650U (en) * | 2011-11-16 | 2012-09-05 | 宝钢建筑系统集成有限公司 | Self-supporting ribbed reinforced steel bar truss concrete composite slab |
-
2014
- 2014-12-22 JP JP2014258236A patent/JP2016118047A/en active Pending
-
2015
- 2015-04-30 CN CN201510217109.5A patent/CN106193442A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5462677A (en) * | 1977-10-28 | 1979-05-19 | Ohbayashigumi Ltd | Method and apparatus for installing ceilling lighting device |
| CN2749982Y (en) * | 2004-10-15 | 2006-01-04 | 张国平 | Composite hard plastic floor |
| CN201087492Y (en) * | 2007-08-07 | 2008-07-16 | 曾国华 | Floor structure of combined steel bearing plate |
| CN202416650U (en) * | 2011-11-16 | 2012-09-05 | 宝钢建筑系统集成有限公司 | Self-supporting ribbed reinforced steel bar truss concrete composite slab |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016118047A (en) | 2016-06-30 |
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Application publication date: 20161207 |
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