JPH04145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for embedding hot water radiating pipes in a floor slab for performing floor heating in a reinforced concrete building.

[Conventional technology]

In the conventional construction of underground heating pipes, as shown in Fig. 5, slab reinforcement 1 is connected to slab concrete 2.
A normal slab floor a with a thickness of, for example, 120 mm is constructed by burying it in the interior, and a welded wire mesh 3 is laid on the top surface of the slab floor a, and hot water heat dissipation pipes 4 are laid and bonded on top of this welded wire mesh 3. A finishing mortar 5 for embedding is cast to a thickness of, for example, 30 mm, and a floor finishing material 6 is further laid on top of the finishing mortar 5.

[Problem that the invention seeks to solve]

In this way, in the conventional construction of a buried floor for heating pipes, the slab concrete 2 and the finishing mortar 5 have to be cast separately, that is, twice, which is complicated. There are various problems such as the laying of 3 and the laying and binding of hot water radiator pipes 4, which requires curing of the slab concrete, prolonging the construction period, and the risk of trampling on the welded wire mesh when laying the hot water radiator pipes. There was a problem.

The inventor of the present invention has conducted extensive research into eliminating the need for finishing mortar by burying hot water heat dissipation pipes in concrete slabs, thereby solving the above-mentioned problems. Regarding the problem of cross-sectional loss, we can improve the crack properties and rigidity by adding more slab concrete to at least the thickness equivalent to the finishing mortar, and by tightly fixing the hot water radiator pipes to the slab reinforcing bars. We have found that there is no need to consider the impact as an issue.

[Means for solving the problem] Arrange slab reinforcing bars, pipe hot water radiating pipes on top of the reinforcing bars, fasten key points of the hot water radiating pipes to the slab reinforcing bars, and then install slab concrete. A method for burying pipes for floor heating, characterized by burying the slab reinforcing bars and hot water radiator pipes in the reinforcing bars by repeatedly hammering them.

[Effect]

According to the present invention, it is not necessary to cast finishing mortar as in the conventional method, that is, it is sufficient to cast slab concrete once, so the construction is simple, the construction period can be shortened, and the construction cost can be reduced.

〔Example〕

Figures 1 and 2 show cross-sectional views of an example of a floor slab obtained by the construction method of the present invention, and the thickness of the floor slab of this example is 150 mm.

7 and 7' are the upper end slab reinforcing bars and the lower end slab reinforcing bars, which are the same diameter as those used in the case of a general reinforced concrete floor slab without piping, that is, a 120 mm thick slab without buried hot water radiator pipes, and are placed in the same position.
In other words, the upper end slab reinforcing bars 7 are arranged at a position 100 mm from the bottom surface of the slab, and the lower end slab reinforcing bars 7' are arranged at a position 20 mm from the bottom surface of the slab.

Reference numeral 8 denotes hot water heat dissipation pipes laid at a pitch of 150 mm on the upper end slab reinforcing bars 7 and fixed to the reinforcing bars 7 at important points with wire, and made of cross-linked high-density polyethylene with an inner diameter of 13 mm and an outer diameter of 17 mm. 9 is a welded wire mesh with a pitch of 150 mm laid over the hot water radiator pipe 8, and 10 is a
These upper and lower end slab reinforcing bars 7, 7', hot water radiating pipes 8 including binding wires, and welded wire mesh 9 are buried in the slab concrete, which is cast once, and the distance from the top surface of the hot water radiating pipes 8 to the top surface of the floor slab Then, the slab concrete covering thickness of the hot water heat dissipation pipe 8 is 33 mm, which is larger than the outer diameter of the heat dissipation pipe 8. 1
1 is a finishing material.

As shown in the diagram in FIG. 4, the hot water radiator pipes 8 are arranged in a meandering manner at predetermined intervals to suit the size of the floor slab, and more precisely, the size of the room to be heated. It is shaped and processed.

This shaping process is performed in advance at the factory, and the processed hot water radiator tubes are stored and shipped in a bundle so that when unpacked at the site, they can be unfolded into the meandering arrangement at the predetermined intervals.

Specifically, the above-mentioned meandering arrangement shape of the hot water heat dissipation pipe 8 is made by folding a cross-linked high-density polyethylene pipe of one circuit length in half and aligning the inlet A and the outlet B, and then forming the pipe as shown in FIG. 4, for example. For 6 tatami mats, the width is 2400 mm, and the depth is 3000 mm (for 4 tatami mats, the width is 3000 mm.
Both the depth is 2400 mm, and for the 8 tatami room, both the frontage and depth are
3000mm, width 3000mm, depth 4200mm for 10 tatami mats,
etc.), and the outgoing path 8' and the incoming path 8'' are formed to be parallel to each other alternately with a pitch of 150 mm, and the outgoing path 8' and the incoming path 8'' are formed into a hairpin curve part 8. are tied together with adhesive tape.

In practice, the construction method of the present invention involves first creating a conventional formwork for constructing a normal floor slab, and
Place the upper and lower slab reinforcing bars 7, 7' at specified positions.
In other words, reinforcement will be placed at 100mm and 20mm from the bottom of the slab.

Next, the above-described shaped and bundled hot water heat dissipation pipes 8 are spread out on the upper end slab reinforcing bars 7, and key points thereof are tightly fixed to the upper end slab reinforcing bars 7 with binding wires. Subsequently, a welded wire mesh 9 is laid over the hot water heat radiation pipe 8.

After that, slab concrete 10 is poured in one step until the hot water radiator pipe 8 has a covering thickness of 33 mm, and the hot water radiator pipe 8 including the upper and lower end slab reinforcing bars 7, 7', the binding wire, and The welded wire mesh 9 is buried.

It is clear that this results in a floor slab having the structure described above and shown in FIGS. 1 and 2.

In the above, it is of course possible to bring a coiled hot water radiator tube to the site, roll it out onto a reinforcing bar, and tie it to the reinforcing bar at important points so as to arrange it in a meandering arrangement at a predetermined pitch. However, in this case, there are disadvantages such as trampling over the reinforcing bars and making the arrangement in a predetermined meandering manner cumbersome and inefficient.

In addition, the hot water radiator pipe 8 is not limited to being laid only on the upper end slab reinforcing bars 7 as described above; for example, if the construction site uses bend reinforcing bars, especially in the central part of the slab, as shown in Fig. 2. It may be laid on the slab reinforcement at the dashed line position.

Furthermore, by laying the welded wire mesh 9 over the hot water radiating pipe 8, the hot water radiating pipe 8 can be prevented from being stepped on directly during construction or being damaged by a shovel or the like during concrete pouring. This has the effect of inhibiting the growth of cracks on the surface of the floor slab, but it is not necessary to install this welded wire mesh 9, as it is possible to ensure the specified structural strength of the floor slab without it. not,
Therefore, this may be omitted.

〔Effect of the invention〕

As is clear from the above, in the construction method of the present invention, slab reinforcing bars and hot water heat radiation pipes are buried by pouring slab concrete once, so finishing mortar is applied separately from pouring slab concrete. Compared to the conventional construction method of pouring and burying hot water radiator pipes, construction is easier, the construction period can be shortened, and construction costs are also lower. In addition, since the hot water radiator pipes are tightly fixed to the slab reinforcing bars at important points, they do not displace or move due to slab concrete placement and maintain their predetermined positions.

Moreover, by fastening the hot water radiator pipes and the slab reinforcing bars as described above, if the total thickness of the slab concrete is sufficient, in other words, at least the cross-sectional loss due to the thickness of the hot water radiator pipes can be covered. By pouring more slab concrete, it is possible to construct a floor slab with the same structural strength as without piping.

[Brief explanation of drawings]

The drawings are for explaining an embodiment of the construction method of the present invention. Figure 1 is a sectional view of a floor slab according to the construction method of the present invention, Figure 2 is an enlarged sectional view of the same main part, and Figure 3 is a plan view of the piping state. 4 are explanatory diagrams showing the expanded state of the hot water heat dissipation pipe, and FIG. 5 is a sectional view of a conventional example. 7, 7'...Top and bottom slab reinforcing bars, 8...
Hot water radiator pipe, 10...Slab concrete, 9...
...Welded wire mesh.

Claims (1)

[Claims] 1. Arrange slab reinforcing bars, pipe hot water radiating pipes on top of the reinforcing bars, fasten key points of the hot water radiating pipes to the slab reinforcing bars, and then pour slab concrete once. A method for burying pipes for floor heating, characterized by burying the above-mentioned slab reinforcing bars and hot water radiating pipes therein. 2 A cross-linked high-density polyethylene pipe of one circuit length is folded in half and the inlet and outlet are aligned, and the pipe is meandered, and the outgoing and incoming routes are set in advance so that they are alternately parallel to each other at a constant pitch except for hairpin curves. 2. A method for burying pipes for floor heating according to claim 1, characterized in that shaped hot water radiating pipes are installed. 3. A method for burying pipes for floor heating according to claim 1 or 2, characterized in that slab concrete is placed over the hot water radiator pipe so that the covering thickness is equal to or greater than the outer diameter of the hot water radiator pipe.