JPH04366273A - Application process of double floor and production of supporting block by use thereof - Google Patents

Abstract

PURPOSE:To construct simply and stably a low double floor with low cost and easily obtain a supporting block with flatness and accuracy in dimensions, having flexibility and further, facilitate the adhesion by adaption with the substrate. CONSTITUTION:An intermediate net partition made of foamable plastic is inserted into a mold made of steel plates. Foamable plastic is poured therein and a supporting block 11 having a shoulder at the lower level by one step at the end is formed. This supporting block 11 is placed separately on the ground under the floor and a floor panel 21 or the like is placed between the shoulders 13 of the supporting blocks to form a double floor.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a double floor and support blocks used therein.

0002

[Prior Art] In recent years, office automation (O
A) As the technology advances, many small electronic devices such as office computers and word processors are being installed in general offices, leading to the adoption of double floor structures (free access floors).

[0003] In the conventional double floor structure, a number of supports equipped with a height adjustment mechanism using screw members or the like are fixed to the subfloor surface such as a slab, and the flooring material is laid on top of these. The entire underside of the flooring can be used as a wiring space, and wiring devices can be attached to desired locations on the flooring. However, such a double-bed structure usually has a
Each of the four corners of a 50 to 600 mm square flooring material is supported by supports, which requires time to install and increases construction costs. Furthermore, the flooring material had to be laid at a relatively high position from the subfloor level, which wasted the height space in the room.

[0004] As a double floor structure for low floors, it has been proposed to place comparatively simple leveling supports at intervals without fixing them on the subfloor, and to support the four corners of the flooring with these supports. There is. However, with this method, the flooring material was prone to rattling, and its strength was limited, making it difficult to place heavy objects on it.

[0005]

[Problems to be Solved by the Invention] The present invention provides a method for constructing a double floor structure that enables a double floor structure with a low floor height, is easy to increase strength, and can reduce construction costs. It is something to do. The present invention also provides a method for manufacturing a support block that is suitably used in the construction method described above.

[0006]

[Means for Solving the Problems] The method for constructing a double floor according to the present invention is to install support blocks having shoulders that are lowered one step at the ends on the subfloor surface at a distance from each other, and to span the shoulders. The feature is that a floor panel is laid down to cover the space between the shoulders of adjacent blocks, and a space is formed on the lower surface of the floor panel.

[0007] Furthermore, the method of manufacturing a support block for a double floor according to the present invention is a method of manufacturing a base block used in the above construction method, and includes a formwork that defines the outer surface of the support block including the shoulder portion. A mesh structure that partitions the formwork into small chambers in the horizontal direction of the formwork is housed inside, and cement concrete is poured into the formwork including the small rooms, and the formwork, mesh structure, and cement concrete are poured into the formwork. It is characterized by being integrated.

[0008]

Embodiment FIG. 2 is a plan view showing an embodiment of the construction method of the present invention, and FIG. 1 is a sectional view taken along the line Y--Y. FIG. 3 is also an exploded perspective view. Note that, for convenience of illustration, there are some parts where the scale and comparative dimensions do not match.

[0009] On the floor base 41 such as a concrete slab,
The support blocks 11 are laid out a distance B apart from each other and fixed to the floor base 41 with adhesive or the like. The support block 11 is made of cement concrete, etc., and has a side of A and a height of J.
It is a flat block, and the periphery (four sides) is lowered by K to form a shoulder portion 13. This support block 1
The space between 1 and 11 (width B, height J) is used as a double floor space, and a floor panel is provided on top of it to cover it. Therefore, most of the area of the formed double floor is occupied by the support blocks 11, and the space is smaller than that of a double floor structure using conventional leveling supports.

Various types of floor panels can be used, but at an intersection formed by the corners of four support blocks 11, a flat plate-shaped intersection floor panel 31 is used as the shoulder section 13 of the four support blocks 11. Build the structure so that it is supported by the corners. In the portion where the sides of the two support blocks face each other, a flat construction panel 21 can be spanned between the shoulders 13 of the two support blocks 11, as indicated by 21 in the figure. In this embodiment, one construction panel 21 is constructed, but it may be divided into a plurality of panels. Also, 23 in the figure
, 25, a floor panel 23 for wiring section with support legs having two support legs 25 on one side is used, and one side of this floor panel 23 is placed over the shoulder 13 of the support block 11. , a part (half) of the space between the support blocks 11, 11 can be covered. The remaining part is covered with a floor panel 27 for wiring equipment with support legs that has a similar erection function. By separating the functions in this way, you can attach wiring devices such as outlets to the floor panel 27, and
The bottom surface of 3 can be used as a space for electrical wiring.

To give an example of actual construction, one side (A
=) 1220 mm x 1220 mm, height 40 mm, width (C =) 10 mm, depth (K =) 20 mm shoulder parts are laid side by side at intervals (B =) 380 mm and glued on the floor base 41. did. One side (G=) 400
Intersection floor panel 3, mm x 400mm, thickness 20mm
1 at the intersection, and the opposite part has a size of 400 mm x 200 mm.
A double floor was constructed by placing three floor panels 23 for wiring parts with support legs and a thickness of 20 mm (E x D) and three floor panels 27 for wiring equipment with support legs of the same size. By laying interior materials on top of this, a comfortable office space can be realized.

In the above embodiment, the support block 11 has shoulder portions 13 on four sides, but it may have shoulders on only two opposing sides, or may have shoulders on one or three sides. Good too. Furthermore, it is not necessary to have a shoulder over the entire length of the side; for example, as shown in FIG.
3 may be combined to form a double bed. Such a support block 11 is effective in positioning the deformed floor panel 33 and preventing it from rattling.

[0013] The base block can be manufactured at low cost using cement concrete or the like, and by using foamed cement concrete, weight and cost can be reduced. Furthermore, a base block can also be created using a formwork and a mesh structure.

FIG. 6 is a plan view illustrating an example of this manufacturing method, and FIG. 5 is a sectional view taken along the line Z--Z. The formwork 51 is a box-shaped body having a shoulder portion 13 formed from a thin steel plate, and defines the outer shape of the support block 11 . A network structure 53 made of semi-rigid foamed plastic is placed in this, and foamed cement concrete 55 is poured into the void and hardened to integrate the formwork 51, network structure 53, and foamed cement concrete 55.

Since the obtained support block 11 uses the formwork 51, its surface 11a constitutes a clean plane, and the overall external dimensions and tolerances of the shoulder portion 13 can be accurately determined. . In addition, since the formwork 51 is relatively thin and the foamed cement concrete 55 is divided into cubes by the flexible network structure 53, the support block 11 as a whole has a certain degree of flexibility. The back surface 11b can be fixed onto the floor base 41 with an adhesive, adapting to the unevenness of the floor base 41. In order to promote the integration of the formwork 51 and the cement concrete 55, the formwork 51
A rib may be made to protrude from the inner surface side. Further, embedding of the mesh structure 53 can also be omitted.

[0016]

[Effects of the Invention] According to the double floor construction method of the present invention, even a low-height double floor can be constructed easily and stably. Since the blocks can be constructed from inexpensive materials such as concrete, increases in construction costs can be prevented.

Further, according to the support block of the present invention, it exhibits flexibility as a whole and adapts to the unevenness of the subfloor, facilitating reliable adhesion. Furthermore, since it is easy to achieve surface flatness and precision in external dimensions, it is possible to easily construct a solid double floor.

[Brief explanation of drawings]

[Fig. 1] Line Y- in Fig. 2 showing an example of the construction method of the present invention.
It is a sectional view along Y.

FIG. 2 is a plan view showing an embodiment of the construction method of the present invention.

FIG. 3 is an exploded perspective view showing an embodiment of the construction method of the present invention.

FIG. 4 is a perspective view showing another embodiment of the support block used in the present invention.

FIG. 5 is a longitudinal cross-sectional view along the line Z-Z in FIG. 6;

FIG. 6 is a plan view showing an example of manufacturing a support block.

[Explanation of symbols]

11 Support block 13 Shoulder 21 Erection panel 23 Floor panel for wiring section with support legs 25 Support legs 27 Floor panel for wiring equipment with support legs 29 Support legs 31 Floor panels for intersections 33　Deformed floor panel 41　Floor base 51 Formwork 53 Network structure 55 Foamed cement concrete

Claims (6)

[Claims] Claim 1: Support blocks having shoulders that are lowered one step at their ends are provided on the subfloor at a distance from each other, and a floor panel is laid so as to span these shoulders so that the shoulders of adjacent blocks are connected. A double floor construction method characterized by covering and forming a space on the underside of the floor panel. 2. The method according to claim 1, wherein the floor panel is constructed between the shoulders of adjacent support blocks. 3. The floor panel according to claim 1, wherein a floor panel having support legs on the lower surface of the panel is used, one end of the panel is hung on the shoulder of the support block, and the floor panel is supported by the support legs and the shoulder. Construction method for heavy floors. 4. A method for manufacturing a base block used in the method for constructing a double floor according to claim 1, wherein the base block is provided in a formwork that defines the outer surface of the support block including the shoulders. It is characterized by housing a mesh structure that partitions the planar expansion direction into small rooms, pouring cement concrete into the formwork including the small rooms, and integrating the formwork, the mesh structure, and the cement concrete. A method for manufacturing a base block. 5. The method for manufacturing a base block according to claim 4, wherein the formwork is formed from a metal plate. 6. The method for manufacturing a base block according to claim 4, wherein the network structure is formed from a thin plate made of flexible plastic.