JPH0224824Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a plate-like structure such as a slab, wall, concrete barge, etc. made of precast concrete or cast-in-place reinforced concrete.

Conventionally, this type of plate-shaped structure requires a large amount of concrete, which increases the material cost, requires laborious reinforcing and takes a long time to construct, and if the thickness is large, temperature stress occurs, the conductivity is poor, and the weight is high. Due to the large size of the concrete, strong formwork and shoring are required, and the amount of concrete to be placed requires a long time for concrete pump trucks, and there are other problems such as poor insulation and condensation. It was hot.

The present invention has been proposed in order to eliminate the problems of the above-mentioned prior art. A reinforcing bar assembly tool in which columnar porous or hollow buried formwork pieces are arranged in a honeycomb shape on the formwork, the spacers are connected to the formwork via anchors, and reinforcing bar connecting pipes branch out radially. between the bottom surface of the buried formwork piece and the formwork,
Reinforcement is arranged to be located in the gap between the adjacent fill-in formwork pieces, and concrete is poured in the gap between the same formwork pieces and the gap between the same formwork pieces, as well as on the top surface of the same formwork piece. This invention relates to a honeycomb structured concrete plate characterized by the following.

As described above, the honeycomb structure concrete plate according to the present invention has a honeycomb-like body formed by arranging hexagonal column-shaped porous or hollow lightweight burying form pieces embedded therein. Since concrete is poured between the upper and lower and adjacent formwork pieces, a hollow plate-like concrete structure is constructed in which the upper and lower plates are connected by honeycomb-shaped vertical members, and the structure has the same strength as the conventional one. Furthermore, the weight is significantly reduced, the mass-to-strength ratio is greatly improved, and the generation of temperature stress is negligible, allowing the use of richly mixed concrete with peace of mind. It also has large ductility and has excellent properties as a structural member, making it suitable for earthquake-resistant walls.

Since the ridgeline portion of the burying form piece is formed into a curved surface, concentrated stress is prevented from acting on the concrete at the ridgeline portion.

In addition, since the bottom surface of the buried formwork piece is formed into a gentle bottom surface, when pouring concrete,
Since air bubbles are avoided from remaining in the concrete, and the spacer protruding from the bottom surface is connected to the formwork via an anchor,
The lightweight formwork pieces are prevented from floating during concrete pouring.

In addition, since the honeycomb structure concrete plate according to the present invention is lightweight, the burden on formwork and shoring is reduced, and the burden on columns and beam members in structures to which the honeycomb structure concrete plate of the present invention is applied is reduced. This in turn makes it possible to make the entire structure lighter and taller, and because less concrete is used,
Concrete pump truck usage time is reduced.

Furthermore, inside the honeycomb structured concrete plate according to the present invention, a honeycomb-like body is formed by connecting a large number of hexagonal columnar formwork pieces of the same shape, so that the reinforcing bars with reinforcing bar connecting pipes branch out radially. The hexagonal reinforcing bars assembled using an assembly tool are arranged so as to be located between the bottom surface of the burying formwork piece and the formwork, and in the gap between the adjacent burying formwork pieces. Then,
Unit reinforcement is now possible, reducing the manpower required for reinforcement.
It saves time and does not require skilled labor.

Furthermore, since the plate-like structure according to the present invention has voids inside, the present invention has many advantages, such as being rich in heat insulation and sound insulation, and being completely isotropic, making it suitable for two-way slabs. It is something.

The present invention will be described below with reference to the illustrated embodiments.

1 is an embedded frame piece made of polystyrene foam or vinyl chloride hollow body shaped into a hexagonal column whose weight is almost negligible considering the weight of the entire member. In order to avoid the stress concentration that occurs, the curved surface portion 1a is formed. Further, spacers 2 are protruded at several places on the bottom surface 1b, and the bottom surface 1b is formed into a gently curved surface in order to avoid air bubbles remaining in the concrete during concrete pouring.

Then, the hexagonal pillar-shaped filling mold piece 1 is turned into a mold 3.
Parallel to the honeycomb above. At this time, by anchoring the spacer 2 to the formwork 3 via an anchor 4, the lightweight buried formwork piece 1 is prevented from floating up during concrete pouring.

Then, the reinforcing bars 6 are assembled into a hexagonal shape using the reinforcing bar assembling tool 5 branched out radially from the reinforcing bar connecting pipe 5a,
The hexagonal reinforcing bars are arranged so that each reinforcing bar 6 is located in the gap between adjacent formwork pieces 1 and the gap between the same formwork piece 1 and formwork 3, and is placed in each gap and on the upper surface of the formwork piece 1. A slab is constructed by pouring concrete 7.

The porosity can be arbitrarily adjusted by changing the cell thickness t and the thickness t' of the upper layer concrete of the cells of the honeycomb-shaped slab formed by each of the formwork pieces 1, and the cell height H and cell The ratio to the radius R is appropriately selected depending on the conditions of use.

In addition, since the clearance between formwork pieces 1 is small,
Mortar is used in building slabs because the aggregate size must be kept small to prevent clogging. Furthermore, in order to ensure concrete and mortar are richly mixed and to ensure workability, it is desirable to use a high performance water reducing agent and to add it in portions. Furthermore, since the ion permeability of concrete is proportional to the water-cement ratio, it is possible to suppress carbonation by using rich mix concrete even if the reinforcing bars have a small coverage.

Furthermore, it is effective to use a formwork vibration type vibrator.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the honeycomb concrete structure plate according to the present invention with the upper layer of concrete removed, Fig. 2 is an enlarged view of the part shown in Fig. 1, Fig. 3 is an enlarged longitudinal sectional view of the part, and Fig. 4 5 is a vertical cross-sectional view of the lower end thereof, and FIG. 6 is a slope view of the reinforcing bar joint. 1... Filling formwork piece, 1a... Curved surface part, 1b
...Bottom, 2...Spacer, 3...Formwork, 4...
Anchor, 5...Reinforcement assembly tool, 5a...Reinforcement connection pipe, 6...Reinforcement, 7...Concrete.

Claims (1)

[Scope of utility model registration request] The ridgeline portion is formed into a curved surface, and the spacer is provided protruding from the bottom surface which is formed into a gently curved surface.
A reinforcing bar assembly in which prismatic porous or hollow buried formwork pieces are arranged in a honeycomb shape on the formwork, the spacers are connected to the formwork via anchors, and reinforcing bar connecting pipes branch out radially. The hexagonal reinforcing bars assembled using tools are arranged so as to be located between the bottom surface of the burying formwork piece and the formwork, and in the gap between the adjacent burying formwork pieces, and A honeycomb structure concrete plate characterized by pouring concrete into the gaps between the frame pieces and the formwork, the gaps between the same formwork pieces, and the upper surfaces of the same formwork pieces.