JPH0575871B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to concrete leveling, which is mainly used when pouring concrete into a vertically inclined plate shape, for example, to construct the roof of a building. This relates to a block for draining and preventing flow.

[Conventional technology]

2. Description of the Related Art Hitherto, as shown in FIG. 12, roofs of buildings are known that are made of reinforced concrete and slope in the vertical direction. In such a roof, a temporary frame plate 2 is supported on the temporary support column 1 by being tilted in the vertical direction, and a reinforcing bar assembly 3 is arranged on the temporary frame plate 2 to form a plane parallel to these plate surfaces. After that, the reinforcing bar assembly is embedded and the concrete 4 is cast in a vertically inclined board shape on the temporary frame plate 2.
After the concrete has hardened, the temporary supports 1 and the temporary frame plates 2 are removed and a roof plate is sometimes placed on top of the concrete 4.

[Problem to be solved by the invention]

However, in such conventional roofs, the fluidity of the concrete after pouring causes it to flow down to the eaves, and the thickness of the concrete at the lower end of the slope is the first.
The thickness becomes thicker as shown by the chain line in Figure 2. Therefore, a manual ground leveling device commonly known as a dragonfly is used to scrape up the concrete after it has been poured, but although it takes a lot of effort, the concrete after hardening does not reach the lower end of the slope. There was still a problem that it was quite thick.

In addition, in conventional roofs such as those mentioned above, members such as roof plates are sometimes installed on the concrete after the plate-shaped concrete has hardened, and in this case, anchors are used to fix the roof plates etc. to the concrete. Although it is necessary to use metal fittings, there is a problem in that workability is poor, such as the work of embedding and fixing the legs of the anchor metal fittings in concrete is troublesome.

The present invention solves the above-mentioned conventional problems, and
It eliminates or reduces the work of raking up concrete after pouring, and the concrete after hardening is hardly thick even at the bottom of the slope, making it possible to obtain a uniform sloped surface, and furthermore, making the concrete pouring work easier. The purpose of the present invention is to provide a concrete leveling and flow-stopping block that can be used to easily embed and fix anchor fittings for fixing members such as roof plates in concrete with good workability. There is.

[Means to solve the problem]

The concrete leveling and flow-stopping block according to the present invention is formed in a shape in which the cross-sectional area of the vertical middle part is smaller than the cross-sectional area of the upper and lower parts, and the block has a height equivalent to the thickness of the concrete to be poured. The molded product is made of reinforced concrete and is formed in a size such that the middle part fits into the mutual spacing between the parallel reinforcing bars of the reinforcing bar assembly, and a recessed part opening to the upper surface is formed in the upper part and the middle part in the vertical direction. The upper part of the anchor fitting is accommodated in the recess, and the legs of the anchor fitting are buried in the reinforced concrete forming the block.

[Effect]

The leveling and flow prevention blocks according to the present invention can be achieved by installing a large number of blocks vertically and horizontally on a temporary frame plate that is inclined in the vertical direction, with mutual intervals in the reinforcing bar assemblies parallel to the frame plates. Since the thickness of the concrete when poured and the height of the block are the same, it is easy to level the block by using the top surface of the block as a reference, and for this reason, the thickness of the concrete can be made uniform in each part. It is possible,
In addition, the concrete, which has fluidity after pouring, is prevented from flowing down at many points in the vertical direction of the slope by the blocks, and even if the concrete receives a load that tries to flow down, the blocks are supported by the reinforcing bar assembly and keep the slope from flowing down. Since there is almost no downward displacement, the concrete will hardly thicken at the lower end of the slope, and even if there is no or minimal raking work, each part will harden to an almost uniform thickness.Furthermore, since the block is made of reinforced concrete, It integrates with the poured concrete and has a larger cross-sectional area than the middle part between the top and bottom of the block, so the poured concrete gets in between the top and bottom, allowing the block to be poured without lifting up. Can be securely fixed to concrete.

In addition, the leveling and flow prevention block according to the present invention accommodates the upper part of the anchor fitting in the recess that opens on the upper surface, and the legs of the anchor fitting are buried in the reinforced concrete of the block. By installing as described above, the anchor fitting can be installed on the plate-shaped concrete without any trouble at the site where the plate-shaped concrete is placed, and the upper part of the anchor fitting can be placed on this concrete with little or no Since it does not protrude, the anchor metal fittings do not get in the way when concrete is being poured.
The legs of the anchor fittings for fixing members such as roof panels can be easily embedded and fixed in a plate-shaped concrete via the blocks with good workability.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show a leveling and flow stop block according to one embodiment of the present invention. As shown in FIGS. 1 to 3, block 5 of this embodiment
is concrete 7 by connecting relatively thin reinforcing bars 6.
Upper parts 5b and 5c protrude upward and downward from the outer periphery of a columnar vertical intermediate part 5a in the form of flanges, and the outer diameter cross section of the upper and lower parts 5b and 5c is the intermediate part 5c.
It is formed into a vertically symmetrical stepped shape that is larger than the outer diameter cross section of. A recess 5d whose upper surface is open is formed from the upper part 5b to the middle part 5a, and the upper part of the inverted groove-shaped anchor fitting 8 is accommodated in the recess 5d.The leg of the anchor fitting 8 is buried in the concrete 7. is filled with styrene foam 9 with anchor fittings 8 embedded therein. The block 5 is formed to have a height h equivalent to the thickness of the concrete 4 to be poured, and the intermediate portion 5a is formed to a diameter that fits between the reinforcing bars 3a adjacent above and below in the inclination direction of the reinforcing bar assembly 3. has been done. Note that an extending portion 6a extending from the outer periphery of the intermediate portion 5a is formed in a part of the reinforcing bar 6 of the block 5.

Next, the use of one embodiment of the block configured as described above will be explained.

As shown in FIGS. 1 to 6, a large number of temporary supports 1 are erected, and a temporary frame board 2 made of plywood or the like is supported and fixed to these supports 1 while tilting in the vertical direction. The reinforcing bar assembly 3 is installed on the temporary frame board 2 so as to be inclined in the vertical direction so that a plane parallel to the plate surface of the temporary frame board 2 is formed. The reinforcing bar assembly 3 is made up of reinforcing bars 3b extending in the direction of the eaves, reinforcing bars 3a perpendicular to these reinforcing bars, and reinforcing bars 3c in the thickness direction of the concrete to be placed, which are fixed at appropriate intersections.

Inside the reinforcing bar assembly 3, a large number of the blocks 5 of the above-described embodiment are arranged vertically and horizontally with mutual spacing and installed on the temporary frame board 2. In this case, the middle part 5a of the block 5 is connected to the reinforcing bar 3a of the reinforcing bar assembly 3.
and 3b, and position it in each direction.

Thereafter, concrete 4 is poured onto the temporary frame board 2 in the form of a vertically inclined plate, with the reinforcing bar assembly 3 and blocks 5 embedded therein. In this case, the thickness of the concrete 4 is made to be approximately equal to the height of the upper surface of the block 5, so that the concrete 4 does not flow into the recess 5b of the block 5. Although not shown, a temporary weir board is raised from the tip of the eaves of the temporary frame board 2 to prevent the concrete 4 from flowing down.

Concrete 4 immediately after being poured on temporary frame board 2
Although the concrete has fluidity, since the blocks 5 support the falling concrete 4 due to the inclination at multiple locations in the vertical direction, the flowing down is suppressed. The block 5 is supported by the reinforcing bars 3a of the reinforcing bar assembly 3 even when subjected to the load of the concrete 4 trying to flow down, and the block 5 itself is quite heavy, so there is a gap between these and the temporary frame board 2. Since the concrete 4 has a relatively large frictional resistance, even if the concrete 4 is vibrated with a vibrator or the like, it will hardly be displaced down the slope, that is, toward the eaves. Further, since the upper and lower parts 5b and 5c of the block 5 support the reinforcing bars 3a and 3b into which the intermediate portion 5a is fitted, the block 5 does not float up relative to the reinforcing bar assembly 3. In addition, when vibration is applied with a vibrator etc., the middle part 5a between the upper and lower parts 5b and 5c of the block 5, which has a smaller outer diameter than these,
The outer circumferential side is also filled with concrete 4 without any gaps. Further, if the extending portion 6a of the reinforcing bar 6 of the block 5 is fixed in advance to a suitable reinforcing bar of the reinforcing bar assembly 3 by welding or the like, displacement of the block 5 can be more reliably prevented. As mentioned above, since the concrete 4 is hardly thick at the lower end of the slope, it is possible to make each part of almost uniform thickness by leveling the surface after pouring and hardly doing any raking work. Hardens into a disc. After the concrete 4 hardens, the temporary support columns 1 and the temporary frame plates 2 are removed, and the lower surfaces of the blocks 5 and the concrete 4 become flat, forming the lower surface of the roof. After the concrete 4 hardens, since the block 5 is made of reinforced concrete and is made of the same material as the concrete 4, it and the block 5 are securely fixed together, and the upper, lower part 5b,
Since the concrete 4 bites into the outer periphery of the intermediate portion 5a between the blocks 5c, the block 5 will not be displaced in the thickness direction of the concrete 4, such as by lifting up.

After the concrete has hardened, as shown in FIG. 6, at least a portion of the styrene foam 9 filled in the recess 5d of the block 5 is removed, and the hook bolt 11 of the fixture 10 is hooked onto the anchor fitting 8.
By inserting the hook bolt 11 into the upper wall plate 12b of the holding plate 12 and tightening it with the nut 13 from above,
The holding plate 12 is supported and fixed on the block 5. Both legs 12 of a face plate support member 14 such as a rafter are substantially C-shaped and have both legs 14a opened above the presser plate 12.
a, both legs 14a of the face plate support member 14
The support member 14 is fixed onto the block 5 and the concrete 4 by press-fitting the wedge plate 15 thereon.
Inner layer materials 16 and 17 such as wood wool boards having heat and sound insulating properties are supported and laid on the concrete 4 and on both side step portions 14b of the support member 14, and a long iron plate or the like is placed on the upper surface plate 14c of the support member 14. Roof plate 1 consisting of
8 are fixed and horizontally roofed, and a space 19 having inner layer materials 17 and 16 at the upper and lower parts is formed between the roof plate 18 and the concrete 4.

FIG. 7 shows another embodiment of the invention. The block 5 of this embodiment has an upper portion 5b and an intermediate portion 5a in the vertical direction formed in a series of inverted truncated conical shapes, and an intermediate portion 5a.
A lower part 5c is made to protrude from the outer periphery of a in the form of a flange, and a threaded rod-shaped anchor fitting 8 is provided in the inverted truncated cone-shaped recess 5d.

Figures 8 to 10 show different embodiments of the invention having a rectangular cross section. In the block 5 of this embodiment, the upper and lower parts 5b and 5c are connected to an intermediate part 5a in the vertical direction.
Each part 5 is made to protrude like a flange from both sides of the long side.
a, 5b, and 5c are formed into a rectangular cross section, and groove-like recesses 5d are formed along the long sides, and the upper surfaces of the recesses 5d are formed at the upper ends of the pair of rod-shaped anchor fittings 8 whose upper portions are accommodated in the recesses 5d. A cover 21 made of a metal plate with an inverted groove-shaped side cross section that covers the openings on both end faces is welded and fixed. In this embodiment, a member provided on the concrete 4 is attached by welding or the like using the cover 21.

Note that the configurations of each of the embodiments shown in FIGS. 7 and 8 to 10 other than those described above are the same as those shown in FIGS. 1 to 6, and in FIGS. , the same symbols as in FIGS. 1 to 6 indicate corresponding parts.

Further, in the present invention, in the embodiment shown in FIGS. 1 to 3, the styrene foam may be eliminated by removably fitting an inverted plate-shaped cap into the recess. The embodiment shown may be provided with an anchor fitting and a cover welded thereto to enable use similar to that shown in FIGS. 8-10.

Furthermore, in the present invention, as shown in FIG.
By inserting the bolt 20 into the insertion hole 5e from above and passing the bolt 20 through the temporary frame plate 2, the block 5 can be positioned more reliably, and after the temporary frame plate 2 is removed. The bolt 20 is attached to the block 5 and concrete 4, such as by hanging the bolt 20 on the ceiling.
Can be used to attach components installed below. Note that a nut may be fitted to the tip of the bolt 20 and the temporary frame plate 2 or the like may be tightened with the bolt 20 and the nut. In the embodiment shown in FIG. 7, etc.,
The configurations of each embodiment can be selected and used as appropriate, for example, insertion holes and bolts may be provided in the same manner as shown in FIG. 11.

Furthermore, the blocks of the present invention are not limited to roofs, but can also be used on vertically sloping floors of buildings, and can also be applied to horizontal concrete pouring.

〔Effect of the invention〕

As explained above, the concrete leveling and flow prevention blocks according to the present invention are provided by arranging a large number of concrete blocks vertically and horizontally at intervals in a reinforcing bar assembly, and pouring concrete into the reinforcing bar assembly. By embedding it in the concrete, it becomes easier to level the concrete when pouring it.Also, when concrete is poured vertically at an angle, it prevents the concrete from flowing due to the slope, and the lower end of the slope Prevents the part from becoming thicker,
It is possible to easily make each part of the concrete almost uniform in thickness, and the blocks are less likely to be displaced or otherwise lift up relative to the poured concrete and reinforcing bar assembly, and they are reliably integrated with the concrete. is obtained.

Furthermore, the leveling and flow prevention block according to the present invention accommodates the upper part of the anchor fitting in the recess that opens on the upper surface, and the legs of this anchor fitting are buried in the reinforced concrete of the block. By installing as described above, the anchor fitting can be installed on the plate-shaped concrete without any trouble at the site where plate-shaped concrete is placed, and the upper part of the anchor fitting can be placed on this concrete with little or no effort. Since it does not protrude, the anchor metal fittings do not get in the way when concrete is being poured.
Another effect is obtained in that the legs of the anchor fittings for fixing members such as roof panels can be easily embedded and fixed in a plate-shaped concrete via the blocks with good workability.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention.
A line sectional view, Figure 2 is a - line sectional view of Figure 3,
FIG. 3 is a plan view of an embodiment of the present invention, FIG. 4 is a schematic vertical sectional view showing a roof using blocks of an embodiment of the present invention, and FIG. 5 is a plan view of a roof using blocks of an embodiment of the present invention. FIG. 6 is a partial vertical cross-sectional view of a roof using blocks according to an embodiment of the present invention, and FIG. 7 is a vertical cross-sectional view showing another embodiment of the present invention. 8 is a perspective view of different embodiments of the present invention, FIG. 9 is a sectional view taken along the line -- in FIG. 8, FIG. 10 is a perspective view of the cover of the embodiment shown in FIG. 8, and FIG. 12 is a side view showing a block according to a modified example of the present invention, and FIG. 12 is a schematic vertical sectional view of a conventional roof. 3... Reinforcing bar assembly, 3a, 3b, 3c... Reinforcing bars, 4... Placed concrete, 5... Block, 5a... Middle part, 5b, 5c... Upper, lower part,
5d... recess, 5e... insertion hole, 6... block reinforcing bar, 7... block concrete, 8...
Anchor fitting, 9...Styrene foam, 20...
...Bolt, 21...Cover.

Claims (1)

[Scope of Claims] 1. Formed in a shape in which the cross-sectional area of the vertical middle part is smaller than the cross-sectional area of the upper and lower parts, and has a height equivalent to the thickness of the concrete to be poured,
Furthermore, it is made of a reinforced concrete molded product formed to a size such that the intermediate part fits into the mutual spacing between parallel reinforcing bars of the reinforcing bar assembly, and a recessed part opening to the upper surface is formed in the upper part and the vertically intermediate part, and in this recessed part A block for leveling and preventing the flow of concrete, which accommodates the upper part of the anchor fitting and is buried in reinforced concrete with the legs of the anchor fitting forming the block. 2 The recesses provided in the upper part and the vertically intermediate part are
The block for leveling and preventing the flow of concrete according to claim 1, which is filled with styrene foam in which anchor fittings are embedded. 3. The recesses provided in the upper part and the middle part in the vertical direction are
The block for leveling and preventing the concrete from flowing according to claim 1, wherein a cover is attached to cover the opening of the recess.