JPH0376929A - Steel-framed foundation - Google Patents

Abstract

PURPOSE:To improve work efficiency by a method wherein an underground soil cement column is placed perpendicularly into the ground from the earth surface and a long steel column is inserted therein along thereto from the upper end face thereof, and the soil cement column is hardened afterward with the front end of the steel column projecting a specified length above the soil cement column. CONSTITUTION:A hole 2a is dug with an earth auger perpendicularly into the earth 2 and cement milk is poured therein and an H shape steel column 3 is erected thereto with its upper part projecting a specified length above the surface of a soil cement column 1 while the column is still unhardened, then a steel footing 4 is constructed therewith after the hardening. A foundation 6 for a house is formed by arranging the steel footings 4 on principal positions and by making the projecting tops of the H shape steel columns spanned with H shape steel beams 5 that are welded and fixed thereto. A house foundation is then constructed by fixing floor panels 7 and wall panels 8 only by welders and assemblers. Thereby economized execution of work can be achieved with simplified work process.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a steel frame foundation suitable for general housing.

[Conventional technology]

BACKGROUND ART Conventionally, as foundations for general houses, independent foundations made of concrete and continuous foundations called cloth foundations have been applied, and these are constructed as follows, for example.

In other words, the foundation of the house to be built is laid with chestnuts, and concrete is poured on top to form the base. Next, tie the horizontal reinforcements to the vertical reinforcements erected from this base with binding wires, formwork is erected on both sides of these reinforcements with a certain width, concrete is poured into this formwork, and the vertical reinforcements are erected. form a section. After the concrete hardens, the formwork is removed and the foundation of the house is formed.

[Problem to be solved by the invention]

However, in the conventional foundations mentioned above, in order to maintain the distance between the formwork at a predetermined interval by taking the dimensions on site, the formwork must be constructed using spacers, clampers, etc. The concrete must be strong enough to withstand pouring, so this work is not something that just anyone can do, and requires workers from various professions such as formwork carpenters, earthworkers, and reinforcing steel workers. Due to the limited time period, the construction requires manpower and time.

The inventors of the present invention have conducted various studies in order to obtain a housing foundation that can be constructed by a small number of workers and that does not take much time, and as a result, they have found that it is advantageous to use steel as a foundation that is exposed above ground. Ta.

The present invention has been made based on the above idea, and an object of the present invention is to provide a steel frame foundation that can be formed mainly by welding steel materials after the foundation piles are driven into the soil.

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the steel foundation of the present invention is constructed by installing a long steel column from approximately the center of the upper end surface of an unhardened soil cement column that is cast perpendicularly into the ground from the ground surface. While being inserted, the tip thereof is made to protrude by a predetermined distance from the upper end surface of the column to harden the soil cement.

Alternatively, a lid body with a steel column erected thereon is fixed to the upper end surface of a soil cement column containing reinforcing bars driven perpendicularly into the ground from the ground surface with anchor bolts protruding from the upper surface.

[Effect]

Since the steel frame foundation of the present invention has the above-mentioned configuration, if it is placed at the main part of the residential site based on the house blueprint, the above-mentioned steel columns protruding upward from the above-mentioned steel frame foundation can be used. , the foundation of a house is formed only by welding.

〔Example〕

FIG. 1 shows an embodiment of a steel frame foundation according to the present invention, and reference numeral 1 in the figure indicates a soil cement column. There are no particular restrictions on the method of forming this soil cement column (hereinafter referred to as column) l, but it is usually made by drilling a vertical hole 2a in the ground 2 with an earth auger and pouring cement milk into the hole 2a. When the soil cement is in an unhardened state, the H-shaped steel column 3 is pushed in from the upper surface of the column and allowed to settle, protruding by a predetermined distance from the upper surface of the column 1 and solidified to form a steel foundation 4.

Alternatively, the H-shaped steel column 3 can be appropriately settled to harden the soil cement, and then the tips of the protruding portions of the H-shaped steel column 3 are cut by melting so that they are at the same height.

As shown in FIG. 2, the steel frame foundation 4 is placed in its main part according to the design drawing, and an H-shaped steel beam 5 is welded and fixed across the tip of the protruding H-shaped steel column to form a housing foundation 6. .

Floor panels 7, wall panels 8, etc. are attached to the house foundation 6 thus formed in the same manner as conventional concrete foundations, and a house is constructed.

After the above-mentioned steel frame foundation 4... is placed on the site corresponding to the main part of the residential building, the residential foundation is constructed only by welders.
The anchor bolts (not shown) for attaching the floor panels 7, etc. are also welded and the construction progresses, so there is no need to cure the concrete, and most of the work can be done by skilled welders and housing assemblers. I can proceed.

3 and 4 show other embodiments of the steel foundation according to the present invention, and the same parts as in FIG. 1 are given the same reference numerals and their explanations will be omitted.

The soil cement column 11 of the steel foundation 4' has holes 2
It is formed by injecting cement milk into a, but at that time,
A reinforcing bar is placed in the hole 2a, and at the same time an anchor bolt 12 protruding from the top surface is inserted. As shown in FIG. 4, on the upper surface of this reinforcing column 11, an H-shaped steel column 13 of a predetermined length is vertically installed approximately in the center, and a bolt hole 14 that matches the anchor bolt 12 is installed. A plate-shaped lid 14 with a hole a is pushed through the bolt hole 14a by the anchor bolt, and is fixed by a nut 12a.

The steel frame foundation 4° constructed in this way has exactly the same external shape as the above-mentioned steel frame foundation, and if it is placed in the same way at the main part, subsequent construction can be carried out efficiently by fewer workers.

In addition, 15 in the figure is concrete poured to prevent the H-shaped steel column or the lid from touching directly on top and corroding.

An example of the construction procedure for constructing the above-mentioned steel frame foundation is shown in FIGS. 4(a) to 4(f). That is, first, as shown in FIGS. 4(a) and 4(b), while drilling the hole 2a with the earth auger 21, the holes 2a in FIGS.
), pour cement milk to form column 1. An H-shaped steel column 3 is inserted into the column 1 so that its tip protrudes by a predetermined distance and is allowed to sink, thereby solidifying the flamm 1. A steel frame foundation is constructed according to the above construction procedure, and as shown in Figure 4(f), the H-shaped steel column 3 protruding from the column L is placed on the
A shaped steel beam 5 is installed, then a floor panel 7 and a wall panel 8
will be organized.

In the above description, the columns and beams are made of H-shaped steel; however, the present invention is not limited to this, and angular or U-shaped steel materials may be used as long as they have sufficient strength.

〔Effect of the invention〕

As described above, by placing the steel frame foundation according to the present invention on the ground corresponding to the main part of the building, subsequent construction can be carried out efficiently by a small number of workers.
Furthermore, since the soil cement column is deep underground, it has sufficient strength as a general residential foundation, and does not require formwork, root cutting, or curing, and is superior to conventional concrete foundations. The economic effects in construction are extremely large, such as the ease of construction.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of a steel foundation according to the present invention, and FIG. Figure 3 shows another example of the steel frame foundation, a view equivalent to Figure 1, Figure 4 is a plan view of the lid body with an H-shaped steel column attached, Figures 4 (a), (b), (C),
(d), (e), and (f) are diagrams showing an example of a construction procedure for a steel frame foundation. 1... Soil cement column (column), 2.
...Ground, 2a...hole, 3...
H-shaped steel column, 4, 4... Steel foundation, 5... H-shaped steel beam, 6... House foundation, 7... Floor panel, 8... Wall panel, 11... Soil cement column with reinforcing bar, 12... Anchor bolt, 12a... Nut, 13...
H-type steel column, 14... Lid body, 14a...
Bolt hole, 21... Earth auger

Claims (2)

[Claims] (1) Insert a long steel column along the column from approximately the center of the upper end of an unhardened soil cement column that is driven perpendicularly into the ground from the ground surface, and insert its tip from the upper end of the column. A steel frame foundation, characterized in that it is made by protruding a predetermined dimension and hardening the soil cement. (2) A steel frame foundation characterized by having a lid body with steel columns erected fixed to the upper end surface of a soil cement column containing reinforcing bars driven perpendicularly into the ground from the ground surface.