JPH10227038A - Foundation structure for detached house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the instantaneous collapse of a detached house due to an earthquake. SOLUTION: Earthquake proof members 2, 20 are arranged on the upper face of a foundation 1. An integral steel frame 3 is arranged on the base isolation members 2, 20 to form a wholly integral structure and a sill 6 is additionally arranged on the steel frame 3 to construct a detached house thereon. The collapse of the detached house due to an earthquake is therefore prevented by the base isolation members 2, 20 and the frame 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a foundation structure for a detached house.

[0002]

2. Description of the Related Art Conventionally, independent footing foundations, composite footing foundations, and the like for detached houses such as wooden buildings.
A continuous footing foundation (cloth foundation) is known. For example, in the case of a cloth foundation, a foundation 61 is installed on the upper surface of the foundation 11 as shown in FIGS. It is connected with a nut 81.

[0003]

[Problems to be Solved by the Invention] However, during the Great Kansai Earthquake, the single most damaged wooden buildings were destroyed, many wooden buildings collapsed, many assets disappeared, and even lives were lost. . The cause is that the standard of the seismic resistance of the wooden house itself is vague compared to concrete RC and SRC, and it is also true that there are many defects in the walls, columns and joints themselves. In addition, several parts of the footing foundation of a wooden house are destroyed and cut apart, and the wooden structure of the superstructure built on this foundation collapses, causing residents to lose houses and danger to life did.

An object of the present invention is to provide a basic structure capable of improving seismic resistance and preventing collapse of a detached house.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, a first feature of the present invention is to provide a footing foundation and a steel-structured pedestal installed above and integrated with the footing foundation. A seismic isolation member interposed between the footing base and the steel-structured base, and a base installed on the steel-structured base, the footing base, the steel-structured base, and the base And are connected.

[0006] The footing foundation is one of an independent footing foundation, a composite footing foundation, and a continuous footing foundation. In addition, a detached house is a general term for buildings that may collapse due to the destruction of the footing foundation,
Includes so-called prefabricated structures, including wooden structures, two-by-four wooden structures and lightweight steel structures. Also, it is natural that the gantry of the steel structure has sufficient strength to receive the full load of the structure constructed on the upper part.

[0007] A second foundation of the present invention is an independent footing foundation, a gantry of a steel structure installed above and integrated with the independent footing foundation, a gantry of the independent footing foundation and a gantry of the above steel structure. And the base installed on the steel structure base.The independent footing foundation has a large central base located in the center and a small foundation around the base. The large central base, the steel structure base, and the base are connected to each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. An independent footing foundation (hereinafter simply referred to as a "foundation") has a large central foundation 10 at its center. Are arranged, and a plurality of small foundations 1... Are arranged around the bases. Seismic isolation members 2 and 20 are placed on the upper surfaces of the large and small foundations 1 and 10. A gantry 3 having an integrated steel structure is installed on the member. Therefore, between the foundations 1 and 10 and the gantry 3,
20 intervenes. As the seismic isolation members 2 and 20, a laminated rubber isolator, an isolator containing a lead plug, and a fixed isolator are appropriately selected and applied. A plurality of anchor bolts 4 are planted on the upper surface of the large central foundation 10 located at the central part. Of course,
An anchor bolt 4 may be planted on the entire surface of the foundations 1 and 10. The structure of the steel base 3 is of a shape that can be mounted on the entire foundations 1, 1, and 10. Through holes 3a through which the anchor bolts can pass through at the center of the base in a positional relationship corresponding to the anchor bolts 4. Are provided, and anchor bolts 5 are planted around the mount at predetermined intervals. Further, a base 6 of a single-family house is installed on the upper surface of the steel base 3, and through holes 6 a are formed in the base at a size and an interval through which the anchor bolt 5 can penetrate.

The anchor bolts 4 implanted in the large central foundation 10 penetrate through the through holes 3a of the steel base 3.
They are connected by a nut 7. In addition, a steel base 3
Anchor bolt 5 planted in the base 6
And the nut 8 is connected by being fastened to this bolt. Above the base 6, a single-family wooden building, not shown, is constructed in the same manner as in the prior art.

Therefore, a large earthquake occurs,
Even if 10 is broken, the holding of the base 6 is ensured by the steel-structured gantry 3, so that the wooden building is prevented from collapsing.
20 and the collapse is more reliably prevented.

In the above embodiment, the independent footing foundation is referred to, but the same applies to the case of the cloth foundation and the composite footing foundation.

In the present invention, in particular, an independent footing foundation is employed. In this independent footing foundation, a large central base 10 is arranged at the center and a plurality of small foundations 1 are arranged around the center.
When the large central foundation, the steel base 3 and the base 6 are connected by the anchor bolts 4 and 5, the strength against the external force received from the vertical direction and the horizontal direction is sufficient. It can be secured, and furthermore, the formwork work and the reinforcing work at the time of constructing the foundation are easier compared to the conventional cloth foundation. When the work is performed with high accuracy, the absolute value of the work error is reduced, which is effective in shortening the work time. In addition, it is possible to standardize the work of arranging reinforcing bars and dams for other foundation works, which contributes to a reduction in construction work costs.

[0013]

According to the present invention, a steel structure base is interposed between the conventional footing base and the base, and a seismic isolation member is interposed between the base and the base. Even if it breaks and collapses in an instant, the single-family house on this base is prevented from collapsing at the same time, and the security of property and life is ensured for residents. In particular, an independent footing foundation is adopted.This independent footing foundation has a large central foundation located in the center and a plurality of small foundations arranged around it. If it is configured to be connected with anchor bolts, sufficient strength in the vertical direction can be ensured, formwork work and bar arrangement work will be easy, and anchor bolt reinforcement planting will be only at the center foundation, When construction is performed with the same accuracy, the absolute value of the work error is reduced, which is also effective for shortening the construction time. In addition, the work of arranging reinforcing bars and weirs can be standardized, which contributes to the reduction of building construction costs.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the entire basic structure.

FIG. 2 is an enlarged sectional view.

FIG. 3 is an exploded perspective view showing a basic structure of a conventional example.

FIG. 4 is an enlarged sectional view of a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Footing foundation (small foundation around independent footing foundation) 10 Footing foundation (large foundation at the center of independent footing foundation) 2,20 Seismic isolation member 3 Steel structure base 4 Anchor bolt 5 Anchor bolt 6 Base 7 Nut 8 nuts

Claims (2)

[Claims] 1. A footing base, and a steel structure mount installed above and integrated with the footing base,
The seismic isolation member interposed between the footing base and the steel structure mount, and a base installed on the steel structure mount, the footing base and the steel structure mount and the base Is the basic structure of a detached house, which is connected. 2. An independent footing foundation, a steel structure base installed above and integrated with the independent footing foundation, and a seismic isolation member interposed between the independent footing base and the steel structure base. And the base installed on the steel structure base.The independent footing foundation has a large central foundation arranged in the center and a small foundation arranged around it. The base structure of a single-family house, characterized in that the central foundation, the steel structure base, and the base are connected by anchor bolts.