JPH02213545A - Floor construction of house - Google Patents

Abstract

PURPOSE:To reduce the weight of a floor and facilitate floor member placing work by filling light-weight foam concrete into the underfloor space surrounded by a base, after constructing a surrounding base, to form an underfloor section, and placing floor member directly on it. CONSTITUTION:A surrounding base 1 is formed of concrete and a rising section 12 is provided on a base 11. Next, light-weight foam concrete is filled into an underfloor space surrounded by the surrounding base 1 to form an underfloor section 2. The upper surface 21 of the underfloor section 2 and the top end of surface 13 of the surrounding base 1 are made in a flat surface of the same height, i.e., flush with each other. Thus workability can be increased and inconveniences such as floor noise, etc., can be eliminated.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a building floor structure.

(Prior art) Conventionally, a medium foundation (in addition to a block foundation, a cloth foundation may be used) d is provided in the underfloor space surrounded by a peripheral foundation a, and a medium foundation d is provided.
A floor structure of a building is known in which a floor plate (a concrete plate made of ALC plate or the like) C is laid on top of the floor plate (see Fig. 2). Note that the floorboard C is fixed to the outer peripheral foundation a using fasteners e.

(Problem to be solved by the invention) The floor structure of such buildings had the following problems.

■ Floor plates made of concrete are very heavy and difficult to install.

■ The construction cost of the medium foundation that supports this floorboard is high;
Construction takes a long time.

■ It is difficult to adjust the top of a medium foundation, and in most cases, the floorboards move or make floor noises after completion.

■ Also, when constructing a medium foundation, excavated soil is generated, and the cost of moving and dumping this excavated soil is large.

The floor structure of a building according to the present invention has been developed in view of the problems of the prior art.

(Means for Solving the Problems) In the floor structure of the building of the present invention, the lower part of the floor is formed by filling lightweight foamed concrete into the underfloor space surrounded by the outer peripheral foundation made of concrete, and the lower part of the floor is made of this lightweight foamed concrete. The upper surface of the floor and the top surface of the outer peripheral foundation are made into a plane with almost the same height, and the floor members are laid on the lower part of this floor.

(Operation) After constructing the outer peripheral foundation of concrete, the lower part of the floor is formed by filling the space under the floor surrounded by the outer peripheral foundation with lightweight foamed concrete.

The top surface of this lower part of the floor and the upper surface of the outer peripheral foundation are made into a plane with approximately the same height, and the floor members are laid directly on this lower part of the floor.

(Example) FIG. 1 is a longitudinal sectional view showing the floor structure of a building according to the present invention.

The outer foundation 1 is made of concrete, and the base 1
A rising portion 12 is provided on top of the top portion 1 .

Reference numeral 13 indicates the top end surface of the outer peripheral foundation 1.

A lower part of the floor 2 is formed by filling the space under the floor surrounded by the outer peripheral foundation 1 of concrete with lightweight foamed concrete.

The upper surface 21 of this lower floor 2 made of lightweight foamed concrete
The top surface 13 of the outer peripheral foundation 1 is a plane having approximately the same height (they are flush with each other).

Lightweight foamed concrete contains a large amount of fine air bubbles in a cement matrix. This lightweight foamed concrete will be constructed on-site using a plant equipped with slurry equipment and foaming equipment. Examples of the composition of lightweight foamed concrete are shown in Table 1 below.

(The following is a blank space) Table 1 The compressive strength and other performances of the lightweight foamed concrete with this mixture were analyzed and shown in Table 2 below.

Table 2 As shown above, lightweight foam concrete has a lighter unit volume weight than soil. Therefore, the load from the lower part of the floor 2 to the ground 6 is greatly reduced, and subsidence is prevented. In addition, the outer peripheral foundation l
Since the rising portion 12 is integrated with the lower floor 2, the strength of the outer foundation 1 is improved.

The floor member 3 is laid on the floor lower part 2 thus constructed.

The floor member 3 includes a heat insulating material 3 such as styrofoam, a floor finishing material 32. Although it is composed of joists 33 and the like, this configuration is not limited to this. That is, the floor member 3 may include tatami mats, carpets, and the like.

Note that level finishing is performed using cement mortar 4 or the like over the top surface 21 of the lower floor 2 which is flush with the top surface 13 of the outer peripheral foundation 1 made of concrete.

Reference numeral 5 in the figure is the framework of the building.

(Effects of the Invention) The floor structure of the building of the present invention is as described above, so it has good workability and does not cause any inconvenience such as floor noise.

Additionally, the lower part of the floor is made of lightweight foamed concrete, which provides excellent insulation. The upper surface of the lower floor serves as a platform and can be used as a construction floor for steel frame assembly or other building construction work.

Because the lower part of the floor made of lightweight foamed concrete and the rising part of the outer peripheral foundation made of concrete are integrated, the strength of the outer peripheral foundation is high. Uneven settlement of each is prevented.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing one embodiment of the floor structure of a building according to the present invention, and FIG. 2 is a vertical cross-sectional view of a conventional example. ... Perimeter foundation 11 ... Base 13 ... Top surface ... Floor lower part 21 ... Top surface ... Flooring work 2 ... Rising part Fig. 1

Claims (1)

[Claims] 1) The lower part of the floor is formed by filling the space under the floor surrounded by the outer peripheral foundation made of concrete with lightweight foamed concrete, and the upper surface of the lower part of the floor made of lightweight foamed concrete is at almost the same height as the top surface of the outer peripheral foundation. A building floor structure characterized by being flat and having a floor member laid on top of the lower part of the floor.