JPH0713381B2 - Slab formwork with sound absorption and sound insulation layers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is a floorboard which is excellent in sound absorption and which is also set as a floorboard construction site and concrete is placed on the floorboard and also serves as a lower ceiling base. Slab formwork that can be built.

(Prior Art) Conventionally, the following method has been known as a method for constructing a floorboard using concrete such as an apartment, an apartment house, and a high-rise building.

First, there is a method of supporting a main frame made of beams on a beam from below with several columns, pouring concrete on it, and then removing the columns and the frame.

In addition, as a method to save labor and shorten the construction period by eliminating the work of removing the formwork on site, a precast board (hereinafter referred to as PC board) is manufactured near the factory or construction site, and this manufactured PC board is used. There is a method of setting the floor board at the construction position, then using the set PC board as a driving form, and placing concrete on the upper part.

Furthermore, as a method that does not require the production of PC boards other than on-site and the removal of the formwork on-site, set the steel deck plate such as flat plate, corrugated, concave-convex type to the floor board construction position, then There is also known a method of placing concrete on the upper part of a deck plate as a driving form.

On the other hand, the problem of floor impact sound passing through the floors on the upper and lower floors is also serious, and therefore a floor board having a high level of sound insulation performance is required.

On the other hand, a floor material having a sound insulating effect, such as foamed plastic, is pasted on the concrete floor slab, or other various sound insulating structures are constructed after the floor slab is constructed.

(Problems to be solved by the invention) However, in the conventional floor board construction method, it takes time and effort to construct and remove the formwork and columns, and the joint strength of the joint between the PC board and the upper concrete to be post-cast. However, the problem of reinforcement of this part remains, and the sound insulation method of the floor board is also a work after constructing the concrete floor slab as described above, resulting in a lot of labor and construction time. It was

For this reason, it is desired to provide a floorboard construction means that can be easily constructed on the floorboard construction site and that the floorboard obtained has sound absorbing and sound insulating properties.

(Means for Solving Problems) Therefore, as a result of repeated research to solve the above problems, the present inventor has used one of the deck plates as a concrete formwork and a rib portion between the other surfaces. , The sound absorbing / sound-insulating layers were packed as if they were sandwiched between them, and a ceiling foundation material layer was placed on top of them to develop an integrated formwork, which was used to place concrete on site. The inventors have found that a floor board with sound insulation can be easily obtained, and problems with the conventional floor board construction can be solved at once, and completed the present invention.

That is, the present invention is characterized in that a sound absorbing / sound-insulating material layer is sandwiched between concave portions on one surface between protruding rib portions of a deck plate, and a ceiling base material layer is provided by being superposed on them. It is a slab formwork with.

(Example) Hereinafter, an example of the present invention will be described in more detail with reference to the accompanying drawings.

The accompanying drawings are partial cross-sectional perspective explanatory views showing an embodiment of a slab formwork having a sound absorbing layer / sound insulating layer according to the present invention.

First, the slab formwork main body 1 of the present invention is a deck plate, a flat portion 2 for introducing slab concrete on one surface thereof, and a rib portion 3 protruding from the flat portion 2 on the other surface thereof. There is.

The number of the rib portions 3 may be plural, or may be one or two. In the case of one or two ribs, one unit is used and some units are used in combination.

A sound absorbing material layer 4 made of a sound absorbing material and a sound insulating material layer 5 made of a sound insulating material are sandwiched and provided in the recesses formed between the rib portions 3, as shown in the figure.

The sound absorbing material to be used may be a conventional one, for example, cork, various fiber materials, foamed plastics, various perforated plates and the like. Similarly, sound insulation materials are also used conventionally,
For example, concrete panels, tiles, metals such as iron and copper,
A plaster board or the like may be used.

As a method for sandwiching the sound absorbing material layer 4 and the sound insulating material layer 5 between the rib portions 3, the sound absorbing material layer 4 may be inserted between the two sound insulating material layers 5 as shown in the illustrated example. Even if the sound absorbing material layer 4 and the sound insulating material layer 5 are stacked in several layers, on the contrary, the sound absorbing material layer 4
The sound insulating material layer 5 may be one layer each.

In the illustrated example, another rib member 6 is provided above the inside of the rib portion 3 to further reinforce the slab form 1, but the present invention is not limited to this. Below the sound absorbing material layer 4 and the sound insulating material layer 5 sandwiched between the rib portions 3, a ceiling base material layer 7 is superposed on the entire surfaces thereof.

As a result, even by setting the slab formwork of the present invention at the floorboard construction position and introducing and placing slab concrete on the upper surface, the ceiling basement of the lower floor is completed and the work is greatly shortened.

Furthermore, if a ceiling finishing material is pasted on the surface of the ceiling base material layer 7 in advance, it is preferable to further shorten the construction period.

Next, a method of constructing a floorboard using the slab formwork of the present invention will be described.

First, set the slab formwork of the present invention at the floorboard construction position,
At this time, for example, in order to further reinforce the slab floor board, a reinforcing bar truss 8 is arranged on the flat portion 2 of the slab formwork 1 as shown in the figure, and then concrete is placed on the upper slab concrete placing portion 9
Introduce to and place.

The slab formwork main body 1 of the present invention is a steel deck plate,
Structurally, the concrete poured into the rib portion 3 has a very good strength because it serves as a beam. Therefore, a small amount of concrete to be cast on site is sufficient. The top may be covered with a few cm of concrete. The fact that the amount of concrete to be cast on-site in this way is small is a very favorable structurally because the work and construction period at the site are shortened and the weight of the floor itself is reduced.

Thus, by using the slab formwork provided with the sound absorbing / sound-insulating layer of the present invention, it is possible to easily obtain a floorboard which is excellent in sound insulation and strength and further includes a ceiling base material for the lower floor.

(Effects of the Invention) As is apparent from the above description, the present invention has a sound absorbing / sound-insulating material layer sandwiched between concave portions on one side between protruding rib portions of a deck plate, and is superposed on them to form a ceiling base material layer. Since it is a slab formwork having a sound absorbing / sound-insulating layer with a structure provided with, it is not necessary to remove the slab formwork after construction, which greatly shortens the work procedure and construction period for floorboard construction.

Since it is not necessary to construct the sound absorbing material layer and the sound insulating material layer afterwards, considerable labor saving is achieved.

Since it can be assembled as a unit in a factory or on the ground, it can be widely used from small buildings to large buildings.

Since it also has a ceiling base material on the lower floor, it is extremely advantageous for shortening the construction period and simplifying it.

Many excellent effects are exhibited.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings are partial cross-sectional perspective views of a slab formwork having a sound absorbing / insulating layer according to an embodiment of the present invention. 1: Slab formwork body, 2: Flat part, 3: Rib part, 4: Sound absorbing material layer,
5: Sound insulation layer, 6: Rib member, 7: Ceiling base material, 8: Reinforced truss, 9: Slab concrete placing part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Shimomura 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kazunori Koshida 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Takanori Sato 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kazuhiko Maebayashi 2-16-1 Kyobashi, Chuo-ku, Tokyo Ken Shimizu Incorporated Co., Ltd. (72) Inventor Kazuhiro Ito 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Ken Incorporated Co., Ltd. (56) Bibliographic references Sho 36-32676 (JP, Y1) 1981 (JP, Y1)

Claims (2)

[Claims] 1. A sound absorbing / insulating layer comprising a sound absorbing / insulating material layer sandwiched between concave portions on one side between protruding rib portions of a deck plate, and a ceiling base material layer provided on the sandwiched layers. Slab formwork with. 2. A slab formwork provided with a sound absorbing / sound-insulating layer according to claim 1, wherein the ceiling base material layer is a ceiling finishing material adhered thereto.