JPH0319343B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a method for leveling and flowing concrete, which is mainly used when pouring concrete into a plate shape that is inclined in the vertical direction, for example, when constructing the roof of a building. This relates to a stop block.

[Background technology and issues to be solved]

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 tilting 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 concrete 4 is cast on the temporary frame plate 2 in the shape of a vertically sloping board, and after the concrete 4 has hardened, the temporary support column 1 and the temporary frame plate 2 are removed. .

However, in such conventional roofs, the fluidity of the concrete after pouring causes it to flow down to the eaves side, and the thickness of the concrete at the lower end of the slope is about 12.
The thickness becomes thicker as shown by the chain line in the figure. 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. I still had the problem that it was quite thick.

The present invention solves the above-mentioned conventional problems, eliminates or reduces the work of raking up concrete after pouring, and makes the concrete hardly thicker even at the lower end of the slope after hardening, resulting in a uniform slope surface. To provide a block for leveling and preventing the flow of concrete, which enables the concrete to be obtained and further facilitates concrete pouring work.

[Disclosure of the invention]

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. It is made of a reinforced concrete molded product having a size such that the intermediate portion fits into the mutual spacing between the parallel reinforcing bars of the reinforcing bar assembly.

The blocks according to the present invention can be installed in large numbers on a vertically inclined temporary frame plate and arranged vertically and horizontally with mutual spacing within reinforcing bar assemblies parallel to the frames. Since the thickness of the concrete and the height of the block are the same, it is easy to level the concrete by using the top surface of the block as a reference, which makes it possible to make the concrete thickness uniform in each part, and also to The flowable concrete is prevented from flowing down the slope at many points by the blocks, and even if the concrete receives a load that would cause it to flow down, the blocks are supported by the reinforcing bar assembly and will not flow down the slope. Since there is almost no 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,
In addition to being integrated with the poured concrete, the top and bottom of the block have a larger cross-sectional area than the middle part, so the poured concrete enters between the top and bottom, allowing the block to be poured without lifting up. Can be securely fixed to concrete.

〔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.
An upper part 5b and a lower part 5c protrude upward and downward from the outer periphery of a cylindrical vertical intermediate part 5a in a flange shape, and the outer diameter cross section of the upper and lower parts 5b and 5c is the intermediate part. It is formed into a vertically symmetrical stepped shape larger than the outer diameter cross section of 5c. A recess 5d whose upper surface is open is formed from the upper part 5b to the middle part 5a, and the recess 5d
The upper part of an inverted groove-shaped anchor fitting 8 is accommodated therein, the leg portions of the anchor fitting 8 are buried in the concrete 7, and the anchor fitting 8 is embedded in the recess 5d and filled with styrene foam 9. 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 has a diameter that fits between the reinforcing bars 3a adjacent above and below in the inclination direction of the reinforcing bar assembly 3. is formed. Note that a part of the reinforcing bar 6 of the block 5 has an intermediate portion 5a.
An extending portion 6a extending from the outer periphery is formed.

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 cast onto the temporary frame board 2 in the form of a board that is inclined in the vertical direction, embedding the reinforcing bar assembly 3 and the block 5 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 5d 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. When vibration is applied using a vibrator or the like, the concrete 4 is also filled without any gaps on the outer circumferential side of the intermediate portion 5a between the upper and lower portions 5b and 5c of the block 5, which has a smaller outer diameter than these.
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 has hardened, the temporary supports 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, the block 5 and the block 5 are securely fixed together, and the upper and lower parts 5b and 5b of the block 5 are fixed together.
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 hardens, 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, and both legs 14a of a rafter-like face plate support member 14 are provided with substantially C-shaped legs 12a opening above the holding plate 12.
The support member 14 is fixed onto the block 5 and the concrete 4 by engaging the wedge plate 15 and press-fitting the wedge plate 15 onto both legs 14a of the face plate support member 14. Steps 1 on both sides of concrete 4 and support member 14
Inner layer materials 16 and 17 such as wood wool boards having heat-insulating and sound-insulating properties are supported and laid on the top plate 14c of the support member 14, and a roof plate 18 made of a long iron plate or the like is placed on the top plate 14c of the support member 14.
In addition to fixing these and horizontally roofing them, roof shingles 1
8 and the concrete 4, a space 19 having inner layer materials 17 and 16 at the upper and lower portions is formed.

In the present invention, when a roof plate or the like is not installed on vertically sloping concrete, that is, when anchor fittings are not required, a recess or a styrene foam filled in the recess is used as an anchor as shown in Fig. 7. The leveling and flow stopper block 5 that was removed along with the metal fittings can be used. 7th
Since the block 5 of the embodiment shown in the figure has an insertion hole 5e for a bolt 20 formed in the lower part 5c, the position of the block 5 can be determined by passing the bolt 20 inserted into the insertion hole 5e from above through the temporary frame plate 2. This can be done more reliably, and after the temporary frame board 2 is removed, the bolts 20 can be used to attach members to be installed below the block 5 and concrete 4, such as hanging from the ceiling. 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.

FIG. 8 shows yet another embodiment of the invention.
The block 5 of this embodiment has an upper part 5b and an intermediate part 5a in the vertical direction formed in a series of inverted truncated conical shapes, a lower part 5c protruding from the outer periphery of the intermediate part 5a in the form of a flange, and a concave part 5d of the inverted truncated cone shape with a screw thread. A rod-shaped anchor fitting 8 is provided.

9 to 11 show an embodiment of the present invention having a rectangular cross section. Block 5 of this example is:
The upper and lower parts 5b and 5c are made to protrude like flanges from both sides of the long side of the vertically intermediate part 5a, and each part 5a, 5
b, 5c are formed into a rectangular cross section, and groove-like recesses 5d are formed along the long sides, and the upper surfaces and both ends of the recesses 5d are attached to 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 opening of the surface is fixed by welding. In this embodiment, cover 2
1 is used to attach members to be provided on the concrete 4 by welding or the like.

In addition, FIGS. 7, 8, and 9 to 11
The configurations of each embodiment shown in the figures other than those described above are as follows.
It is similar to that shown in Figures to Figures 6 and 7.
1 to 10, the same reference numerals 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. 9-11, and the embodiment shown in FIGS. In the embodiment shown in the figure, the same insertion holes and bolts as in the embodiment shown in FIG. 7 may be provided, and the configuration of each embodiment can be selected and used as appropriate.

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

〔Effect of the invention〕

As explained above, the blocks according to the present invention can be obtained by arranging a large number of blocks vertically and horizontally within a reinforcing bar assembly with mutual spacing, pouring concrete, and embedding the blocks together with the reinforcing bar assembly in the concrete. It makes it easier to level the concrete when pouring it, and when pouring concrete vertically at an angle, it prevents the concrete from flowing due to the slope and prevents the lower end of the slope from becoming thicker. This makes it easy to make each part of the concrete almost uniform in thickness, and the block is less likely to be displaced or otherwise lifted from the poured concrete and reinforcing bar assembly, and it is reliably integrated with the concrete. This effect can be obtained.

[Brief explanation of drawings]

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 sectional view of a roof using blocks according to an embodiment of the present invention, and FIG. 7 is a side view showing another embodiment of the present invention. , FIG. 8 is a vertical sectional view showing still another embodiment of the present invention, FIG. 9 is a perspective view of a different embodiment of the present invention, and FIG.
11 is a perspective view of the cover of the embodiment shown in FIG. 9, 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, there is provided a block for leveling and preventing the flow of concrete, which is made of a molded reinforced concrete whose intermediate portion is sized to fit into the mutual spacing between parallel reinforcing bars of the reinforcing bar assembly. 2. The concrete leveling and flow-stopping block according to claim 1, wherein the upper and lower parts protrude like flanges from the outer periphery of the intermediate part in the vertical direction, and have a circular cross section together with the intermediate part. 3. The block for leveling and blocking concrete according to claim 1, wherein the upper and lower parts protrude like flanges from both sides of the intermediate part in the vertical direction, and have a rectangular cross section together with the intermediate part. 4. The concrete leveling and flow stopper according to claim 1, wherein the upper part and the vertically intermediate part are formed into a series of inverted truncated cones, and the lower part is projected like a flange from the outer periphery of the intermediate part. block. 5. The concrete leveling and flow stopper block according to claim 2, 3 or 4, wherein the lower part projecting like a flange from the vertically intermediate part has a bolt insertion hole formed therein. .