JP2853395B2 - Heat insulation floor panel and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-insulating floorboard for roads, bridges, buildings and the like, in which a hot-water pipe for heat insulation is buried, and particularly to a heat-insulating floorboard suitable for a bridge in a cold region and a method of constructing the same. It is.

[0002]

2. Description of the Related Art Generally, a hot water pipe is buried in a concrete floor plate of a building in a cold region or a floor plate of a road or a bridge in a cold region with a lot of snow for the purpose of heat insulation and melting of snow when casting concrete. That is being done. Especially when there is snow on the road surface and on the bridge, the snow melts relatively quickly on the geothermal road surface, but the snow melting is slow on the unopened bridge without heat source, which causes a traffic accident due to slippage. Many construction methods are used.

[0003]

However, in this type of conventional construction method, ordinary concrete having a high thermal conductivity is used as the concrete for burying the hot water pipe, so that the heat of the hot water pipe is reduced to the surface side of the concrete. And distributed to the back side
As a result, there is a problem that the amount of heat transfer to the surface side is small, so that snow melting is delayed and a traffic accident due to slip cannot be avoided.

The present invention has been made in view of the above points, and an object of the present invention is to provide a high-strength heat retaining floor plate capable of improving heat conduction to a surface and a method of constructing the same.

[0005]

Means for Solving the Problems] According to the heat insulating floor according to the present invention in order to achieve the above object, an upward co by supported precast lightweight concrete supporting member
A lower floor plate in the shape of a letter , and hot water
JP that has been formed by laminating an upper layer floor by ordinary Concrete pouring while buried pipe
Sign. Further, according to the method for constructing a heat retaining floor panel according to the present invention,
Lever, the laying the lower floor fabricated in precast construction method using a light-weight concrete Erection hot water pipes above the lower floor, to pouring the upper floor using conventional concrete so as to bury the hot water pipe Characterized by
You.

[0006]

According to the present invention, an upward U-shape manufactured by a precast method using lightweight concrete at a factory or the like is used.
The lower floor slab presented is fixed on a supporting member such as a bridge girder, a hot water pipe is erected above the lower floor slab, and ordinary concrete is cast as the upper floor slab while embedding the hot water pipe to obtain a heat retaining floor slab. be able to. Soshi
According to the heat retaining floor panel obtained in this way, heat transfer and heat diffusion to the lower floor panel made of lightweight concrete with low thermal conductivity are small. The surface is quickly transferred to the surface of the upper floor plate made of the material, that is, the surface of the heat retaining floor plate, and the surface is heated.

[0007]

1 and 2 show an embodiment in which a heat insulating floor plate according to the present invention is applied to a bridge floor plate for explaining a method of constructing a heat insulating floor plate according to the present invention. FIG. 1 is a sectional view of the heat insulating floor plate.
FIG. 2 is a perspective view of the lower floor plate. In these figures,
1 is a girder bridge formed cross section I-shape, on the upper surface of the girder 1, a cross section which constitutes the heat insulating floor, generally indicated at 2 is an upward U-shaped lower floor panel 3 is fixed
You. The lower floor panel 3 is manufactured in a factory, transported to the site, and laid. Further, the lower layer floor 3, the coal ash has been precast this as a raw material by lightweight concrete using structural artificial lightweight aggregate comprising granulated firing at the factory, the lightweight concrete is small thermal conductivity. Since the thermal conductivity increases when concrete absorbs water, it is desirable that the aggregate used for this lightweight concrete has as low a water absorption as possible, such as aggregate made of coal ash. It is also effective to apply a means for reducing the water absorption of the lightweight concrete, that is, applying a water repellent, impregnating, waterproof coating, or the like.

A plurality of stainless steel hot water pipes 4 connected to a hot water source (not shown) are supported on the bridge girder 1 above the lower floor plate 3 fixed to the bridge girder 1 in this manner. In the recess 3a of the lower floor plate 3, an upper floor plate 5 made of ordinary concrete is cast with a hot water pipe 4 embedded therein.

[0009] A method of constructing the heat retaining floor panel configured as described above will be described. In the factory, since the lower floor slab 3 made of lightweight concrete having the above-described composition is manufactured by precasting, the lower floor slab 3 is transported to the site and fixed to the bridge girder 1 with bolts or the like. Next, a hot water pipe 4 supported on the bridge girder 1 is erected in the recess 3a of the lower floor plate 3, and the upper bottom plate 5 made of ordinary concrete is buried with the hot water pipe 4 buried in the recess 3a of the lower floor plate 3.
After the concrete is hardened, the construction is completed by connecting the hot water pipe 4 to a hot water source.

When the hot water is passed through the hot water pipe 4 after the construction as described above, in this case, the lower floor plate 3 is formed of lightweight concrete having a low thermal conductivity, and the upper floor plate 5 is formed of the low thermal conductivity. By being formed of large ordinary concrete, the heat of the hot water pipe 4 is
The temperature of the surface of the upper floor plate 5 is quickly raised, and the surface of the upper floor plate 5 can be quickly melted when there is snowfall because the light is not transmitted much to the side and is transmitted to the upper floor plate 5 side . Especially the lower floor
The board 3 is directed upward so as to cover the lower side and the side of the upper floor board 5.
Because it has a U-shape, it is buried in the upper floor plate 5
The heat from the hot water pipe 4 goes down and to the side.
Instead of facing the surface of the upper floor 5
Is quickly raised.

Now, as shown in the conventional example, let NN denote a heat-insulating floor panel whose entire floor panel is made of ordinary concrete, and LL denote a heat-insulating floor panel whose entire floor panel is made of lightweight concrete. The following experiment was performed using NL as a heat retaining floor plate in which the lower floor plate was formed of lightweight concrete and the upper floor plate was formed of ordinary concrete. That is, the surface of each of the heat retaining floor boards is asphalt-paved, the outside air temperature is kept constant at 5 ° C., and the temperature of the hot water passing through the hot water pipe buried in each of the heat retaining floor boards is 20 °.
When the surface temperature of asphalt is measured as C, N
L>NN> LL, and the temperature at the bottom of the floorboard is always NN
>NL> LL. The surface temperature after 6 hours is 10 ° C. for NL, 8 ° C. for NN, and 5 ° C. for LL, and it has been proved that the surface temperature is highest in the case of this apparatus.

In this embodiment, an example in which the present invention is applied to a floor plate of a bridge is shown. However, the present invention can be applied to a floor plate in a road or a building, and the same effect can be obtained.

[0013]

As is apparent from the above description, according to the present invention, a heat insulating floor plate is provided in a lower U-shaped lower floor plate made of precast lightweight concrete supported by a support member, and in a concave portion of the lower floor plate. Buried hot water pipe
Formed by by pouring the plain concrete while laminating the upper floor, and as the construction method of the heat insulating floor, laying the lower floor fabricated in precast construction method using a light-weight concrete hot water pipes above the lower floor panel The following excellent effects can be obtained by adopting a method of laying the upper floor plate using ordinary concrete while burying the hot water pipe . sand
That is, according to the present invention, the heat of the hot water is supplied to the area below the heat retaining floor plate.
It is difficult to release to the side and it is easy to be transmitted toward the surface of the heat retaining floor plate, improving the heat retaining effect on the heat retaining floor plate surface, in the case of snow , melting this snow quickly and preventing traffic accidents due to slip can do. Further, since the lower floor plate is manufactured by precasting, the dimensional accuracy is improved, and the joining with the support member is facilitated. Furthermore, the recess of the lower floor plate in the field of ordinary concrete the upper floor plate
Since pouring within, with striking設作industry easily,
The connection between the lower floor boards divided into several pieces becomes stronger,
The rigidity of the entire heat retaining floor is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a heat retaining floor panel according to the present invention, for explaining a method of constructing a heat retaining floor panel according to the present invention.

FIG. 2 is a perspective view of a lower floor panel in the thermal floor panel according to the present invention, for explaining a method of constructing a thermal floor panel according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bridge girder 2 Heat insulation floor board 3 Lower floor board 4 Hot water pipe 5 Upper floor board

Claims (2)

(57) [Claims] [Claim 1] above by precast lightweight concrete
Directing a U-shaped lower floor plate and a hot water pipe embedded in the recess of the lower floor plate
A heat retaining floor plate formed by laminating an upper layer floor plate made of ordinary concrete. 2. A method of laying a lower floor slab made of lightweight concrete by a precast method, laying a hot water pipe above the lower floor slab, and casting an upper floor slab made of ordinary concrete so as to bury the hot water pipe. Characteristic method of construction of heat retaining floor boards.