JPH0748754Y2 - Independent foundation structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an independent foundation which is a support portion for suspending and installing foundation beams in foundation construction in the form of an independent foundation.

[0002]

2. Description of the Related Art In order to construct a building in a stable state, it is necessary to first construct a foundation on the ground in a stable and appropriate manner. In the construction of this foundation, there are so-called independent foundation type and cloth foundation type. Are known. The type of cloth foundation is such that a groove having a predetermined depth is formed continuously in the ground where the building is installed, and a continuous foundation is constructed in this groove. On the other hand, in the form of independent foundation, predetermined points in the building construction area,
For example, an excavation hole with a predetermined depth is formed at a position such as a corner of a building and an intersection of walls, an independent foundation is constructed for each excavation hole, and a foundation beam is hung on the independent foundation to construct the entire foundation. Is configured.

The independent foundation type as described above is widely adopted in regions where it is difficult to excavate the ground, such as in cold regions because it is not necessary to continuously excavate the ground.

Regarding construction of an independent foundation in the form of the above-mentioned independent foundation, JP-A-63-251527 discloses "construction method of independent foundation and basic block used therefor" and the like.

[0005]

The applicant of the present invention constructs a foundation in the form of an independent foundation by straddling a concrete foundation beam, which is formed in a bridge shape by cutting out the central portion of the bottom between the independent foundations. We are proposing a method to build.

To install such a foundation beam on an independent foundation, it is necessary to always set the installation surface of the independent foundation at an accurate position and to secure a stable state. That is, the part of the independent foundation is a point that supports the entire building, and after each foundation beam is installed, it is necessary to fix the part completely by pouring concrete.

Therefore, the part of the independent foundation is required to have a structure capable of performing accurate positioning and effective placement of concrete. However, under the present circumstances, a configuration related to an independent foundation capable of accurately and stably installing the foundation beam as described above is not disclosed, and a configuration for effectively placing concrete is also disclosed. It has not been.

The above-mentioned conventional technique, Japanese Patent Laid-Open No. 63-251
Also for the independent foundation disclosed in Japanese Patent No. 527, a foundation block having a reinforcing bar projecting downward is installed in an excavation hole. However, in such a concrete block,
It is difficult for the applicant to stably install the bridge-shaped foundation beam on the upper surface side thereof.

Therefore, it is a problem to construct an independent foundation part which can stably and accurately support the foundation beams bridged between the independent foundations and can effectively perform concrete pouring. It was.

[0010]Purpose of devising  The present invention has been made to solve the above problems.
Stable and accurate independent foundations that accurately support foundation beams
To provide an independent foundation that can be built
It

[0011]

In order to achieve the above object, an independent foundation structure according to claim 1 of the present invention is constructed in an excavation hole formed at a predetermined location of a building installation area, and is composed of foundation constituent members. In an independent foundation structure that constitutes a support portion for installing and installing a certain foundation beam, at least three or more are installed at predetermined locations on the bottom of the excavation hole, and the height at which the protruding height from each upper surface can be adjusted is adjustable. A spacer block provided with an adjusting tool, a precast concrete plate having a predetermined thickness in which reinforcing bars are arranged inside, and a base bottom plate placed on the height adjusting tool of the spacer block,
It is characterized by including.

According to a second aspect of the present invention, in the first aspect, the foundation surface plate is formed with one or a plurality of holes for driving, and the spacer block is provided with the foundation bottom plate. The chamfered portion is formed from the side surface located on the center side to the upper surface.

[0013]

According to the independent foundation structure having the above construction, at least three spacer blocks are installed at the bottom of the excavation hole formed at the installation location of the independent foundation. This requires three or more in order to stably install the foundation bottom plate placed on this upper part. Each of these spacer blocks is provided with a height adjuster for varying the height of protrusion from the upper surface thereof. Then, the base bottom plate is installed on this height adjusting tool, and by adjusting the protruding height thereof, the installation height of the base bottom plate can be finely adjusted.

Therefore, even when the bottom of the excavation hole is not kept perfectly horizontal, it is possible to make the installation surface (head of the bolt) of the foundation bottom plate horizontal by adjusting the height of the spacer block. .

Therefore, the base bottom plate can be installed substantially horizontally. Since the foundation bottom plate is a precast concrete plate in which reinforcing bars are incorporated, it is possible to stably mount the foundation beam on the upper surface thereof.

Further, one or a plurality of pouring holes penetrating in the thickness direction are formed in the foundation bottom plate, and when pouring concrete from above, concrete flows in through the pouring holes. However, concrete can be poured into the spacer block at the bottom of the foundation floor.
At this time, if the spacer block is provided with a chamfer, concrete can smoothly flow into a gap of several cm between the upper surface of the block and the lower surface of the bottom plate. by this,
Concrete can be poured sufficiently from the bottom side of the excavation hole on the lower side of the foundation floor, and stable construction of the independent foundation can be performed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an independent foundation structure according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an explanatory view showing the overall structure of an independent foundation structure according to an embodiment, which is excavated at a predetermined location in a building installation area, such as a corner of a building or a crossing position of a wall. A spacer block 14 is installed on the root 12 of the hole 10. The root cutting bottom 12 is formed substantially horizontally, but is constructed by laying crushed stone or gravel and rolling it. The spacer block 14 needs to be installed at least at three or more places.
Individual spacer blocks 14 are installed.

Then, the base 16 is installed on the spacer block 14. These spacer blocks 1
4 and the base 16 are the main components of the independent foundation,
The end portions of two or more foundation beams 18 are installed on the foundation bottom plate 16, a concrete frame is formed around the foundation beam joint portion, and then concrete is poured, whereby the independent foundation is fixed. That is, the entire foundation is constructed in such a manner that the foundation beam 18 is bridged between the independent foundations having such a configuration.

FIGS. 2A and 2B show examples of the structure of the spacer block 14, and the spacer block 14 shown in FIG. 2A is such that the bolt 20 is screwed into the upper surface of the rectangular block. It is configured by The bolt 20 is screwed into an internal thread portion 22 formed inward from the upper surface 14a of the block body. In this embodiment, the female screw portion 22 is formed by embedding a nut in the block body from the upper surface 14a side. By rotating the bolt 20, the screwing amount can be adjusted, and by adjusting the screwing amount, the height position of the bolt head can be finely adjusted. In addition, marking lines 24a and 24b are provided on the upper surface 14a of the block body.
By setting the position of the spacer block 14 itself and the base plate 16 installed on the spacer block 14,
Is easily adjusted (for example, the end of the base floor 16 is aligned with the marking line 24).

Next, the spacer block 14 shown in FIG.
The configuration is performed as a square pole block having a substantially square horizontal sectional shape. Then, one chamfer on the upper surface side is cut off to form a chamfered portion 14b.
The configurations of the bolt 20 and the female screw portion 22 are the same as the configuration of FIG. Also, the upper surface 1 of the block body
A marking line 24 for positioning is attached to 4a similarly to the configuration of FIG.

Next, FIGS. 3 (A) and 3 (B) are a plan view and a side view showing the structure of the base bottom plate 16 used in the embodiment of FIG. As shown in the figure, the base 16 is made of a precast concrete plate having a predetermined thickness h, and a reinforcing bar 26 is arranged inside the plate. A hole 28 for concrete pouring is formed at a substantially central portion thereof so as to penetrate therethrough in the thickness direction. The concrete pouring hole 28 has a configuration in which the opening width is gradually widened toward the lower surface side in a state of being installed on the spacer block 14 and is tapered. In addition,
A scribing line 27 is also attached to the upper surface of the foundation surface plate 16,
The positioning work is facilitated.

4 (A) and 4 (B) show other examples of the construction of the foundation bottom board 16, and the foundation bottom board 16 in FIG. 4 (A) has four concrete pouring holes 28. An example of the configuration is shown. In the same figure (B), the foundation bottom plate 16 is formed in a circular shape, and the concrete pouring hole 28 is also formed as a circular hole.

Reinforcing bars are arranged inside each of the base floors 16 (not shown) similarly to the base floors shown in FIG. 3, and the concrete pouring holes 28 have the same configuration as shown in FIG. In addition, it has a tapered configuration in which the opening width is widened toward the lower surface side.

Next, the function of the independent basic structure composed of the above-mentioned components will be described.

First, the spacer block 14 includes the bolt 2
By adjusting the screwing amount of 0
Since the installation height of 6 can be finely adjusted, the foundation base 1
6 can always be installed horizontally even if the root cutting bottom 12 does not maintain horizontality.

Since the upper surface of the connected base bottom plate 16 is a horizontal plane, the installation legs of the two base beams 18, for example, can be stably placed on the upper surface. After the installation of the foundation beam 18 is completed, the portion of the independent foundation is solidified with concrete, so that concrete is poured after forming a form around the foundation beam joint portion. In this concrete pouring, concrete flows into the concrete pouring hole 28 of the foundation bottom plate 16 from above and concrete flows into the bottom of the foundation bottom plate 16. At this time, a gap of about several cm is formed between the upper surface 14a of the spacer block 14 and the bottom surface of the base bottom board 16 by the amount of the protrusion of the bolt 20. Therefore, the concrete also flows into the gap, so that the lower side of the foundation bottom plate 16 is sufficiently hardened by the concrete.

Further, according to the spacer block 14 shown in FIG. 2 (B), by arranging the chamfered portion 14b side toward the center, the concrete flowing in from the concrete pouring hole 28 of the foundation floor 16 is prevented. Chamfer 1
It flows in more smoothly from the part 4b, and the base 16
The concrete can flow into the gap between the spacer block 14 and the spacer block 14 better.

As described above, according to the independent foundation structure formed with the spacer block 14 and the foundation bottom plate 16 as main constituent portions, the foundation beam 18 can be stably installed by the constituent members having few simple structures. In addition, concrete can be poured smoothly and satisfactorily, and the stability of its fixed state is secured.

The present invention is not limited to the configuration shown in the above embodiment, but various modifications can be made within the scope of the invention. For example, the configuration of the spacer block can be modified in various ways to improve the inflow of inflowing concrete.

[0031]

As described above, according to the independent foundation structure of the present invention, the independent foundation portion can be accurately constructed with a simple structure, and the stable foundation beam can be installed, and the foundation beam can be installed. It can also be satisfactorily fixed with concrete after installing beams. As a result, it is possible to speed up and stabilize the construction of the foundation of the building that is composed of the independent foundation and the foundation beam bridged between the independent foundation.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of an independent basic structure according to an embodiment.

2 (A) and 2 (B) respectively show an example of the structure of a spacer block which is a part of the independent basic structure of the present invention.

3 (A) and 3 (B) are a plan view and a side view of a base bottom plate used in the embodiment of FIG.

4 (A) and 4 (B) show other structural examples of the base plate.

[Explanation of symbols]

10 Drilling Hole 12 Root Cutting Bottom 14 Spacer Block 16 Foundation Bottom 20 Bolt 22 Female Threaded Section 24 Marking Line 26 Reinforcing Bar 28 Concrete Placing Hole
MH018402

Claims (2)

[Scope of utility model registration request] 1. An independent foundation structure, which is constructed in a drilling hole formed at a predetermined location in a building installation area, and which constitutes a support portion for mounting and installing a foundation beam, which is a component of the foundation, in the drilling hole. Pre-cast concrete with a predetermined thickness in which at least three or more are installed at predetermined locations on the bottom of the base and each of which has a height adjuster capable of adjusting the protruding height from the upper surface of the base, and reinforcing bars are arranged inside. An independent foundation structure comprising: a base plate placed on the height adjusting tool of the spacer block. 2. The base plate according to claim 1, wherein
Alternatively, a plurality of driving holes are formed so as to penetrate through the upper and lower surfaces, and the spacer block is formed with a chamfered portion extending from the side surface located on the center side of the foundation bottom plate to the upper surface. Independent foundation structure.