JP2002348883A - Structure of foundation and construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of foundation and a construction method thereof capable of flattening the upper surface of a concrete foundation even if special flatting work is not carried out, carrying out sill stable supporting, corrosion prevention and accurate positioning of an anchor bolt planted in the foundation. SOLUTION: An upper surface mounting shape steel 19 is placed on the upper surface 2 of the foundation 1 of a concrete construction and, at the same time, when a foundation concrete is placed, the upper surface 2 is flattened by bringing the concrete into contact with the upper surface mounting shape steel 19 placed to a position of the upper surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation structure and a method for constructing a foundation in various buildings such as a wooden house and a steel house (steel house).

[0002]

2. Description of the Related Art Conventionally, in the case of a concrete cloth foundation, the top end face is often not flat, for example, uneven or wavy. Here, Conventional Examples 1 and 2 shown in FIGS. 13 and 14 will be described. In the conventional example 1 of FIG.
The support plate 3 is placed on the top end surface 2 having irregularities, and a wooden (square) base 4 is attached to the support plate 3. The foundation 1 and the base 4 are fixed with anchor bolts 8, and the lower part of the building is placed on the base 4. The horizontal wall frame 5 is installed, the column 6 is installed on the lower horizontal wall frame 5, and the column 6, the lower horizontal wall frame 5, and the base 4 are fixed by fixing bolts 10 through the hole-down hardware 7 fixed to the column 6. Are combined.

In the foundation structure shown in FIG. 13, when the support plate 3 is placed on the top end surface 2 of the concrete foundation 1, the support plate 3 (and the base 4) tends to be unstable because of the irregularities.

In the conventional example 2 shown in FIG. 14, a channel steel 13 as a base is placed on the top end face 2 of a concrete foundation 1 with its U-shaped opening sideways. A reinforcing metal fitting 14 is installed on the bottom of the channel steel 13 and the bottom plate of the reinforcing metal fitting 14, and an anchor bolt 15
Is cast on the foundation 1 to fix the channel steel 13 to the foundation 1. A lower wall frame 16 made of a channel steel is fixed to an upper flange 13 a of the channel steel 13 with fixing bolts 17, and a vertical column frame 18 stands upright from the lower wall frame 16.

In the foundation structure shown in FIG. 14, since the top end face 2 of the concrete foundation 1 is not necessarily flat, the lower flange 13b of the channel steel 13 as a base to be mounted on the top end face 2 is There is a problem that it does not adhere to the top end surface 2 and tends to be unstable.

[0006]

(1) As described above,
The top end face of the foundation remains the concrete at the time of casting, and skill is required to flatten this top end face,
Otherwise, special concrete such as self-leveling concrete is required.

(2) Anchor bolts buried in the foundation concrete are often displaced from a predetermined position due to the pressure at the time of concrete driving or the fluidity of the concrete. Failures may occur and must be corrected.

(3) In the case where the support plate shown in FIG. 7 is not used, when the wooden base comes in contact with the concrete of the foundation, the base is easily corroded due to moisture contained in the concrete.

(4) Regarding concrete foundation,
There is a technique disclosed in Japanese Patent Application No. 0-195885, which makes the base horizontal, but does not contribute to the flattening of the base top end surface because the horizontal reference member is not continuous with the base top end.

(5) Further, regarding the concrete foundation,
There is a technique disclosed in Japanese Patent Application Laid-Open No. 7-173874, in which the upper surface of a foundation formed by casting concrete is leveled with mortar and then a waterproof plate is attached. It is not technology related to

The present invention is characterized in that the above-mentioned prior art has not solved the problem, that is, it is possible to easily flatten the top end face of the foundation, and to dispose a section steel on the flattened top end face, An object of the present invention is to provide a foundation structure and a method for constructing a foundation in which a base to be arranged is stably supported and corrosion and the like are not generated.

[0012]

To achieve the above object, the present invention is configured as follows.

According to a first aspect of the present invention, a top-mounting shaped steel is provided on a top surface of a concrete foundation, and the top surface is disposed at a top position before the foundation concrete is hardened. The foundation structure is characterized by being flattened by being brought into contact with the top-end-mounted shaped steel.

According to a second aspect of the present invention, in the first aspect, the anchor bolt is installed in the unconsolidated foundation concrete through an anchor bolt installation hole formed in the top-end mounting steel. It is characterized by being positioned and being planted in foundation concrete.

According to a third aspect of the present invention, in the first or second aspect, the top-end mounting shaped steel also functions as a form-fitting form member at the time of placing the foundation concrete.

According to a fourth aspect of the present invention, a pair of molds for forming a continuous rising portion of a foundation are arranged in parallel at a predetermined interval and at a predetermined height inside the mold. A shaped steel receiver is provided, and concrete is poured into the inside of the formwork, filled to a predetermined height position, and then covered with a top mounted shaped steel so as to cover the upper part of the concrete, and received by the shaped steel receiver. After the concrete hardens,
A method for constructing a foundation on which a shaped steel is disposed on a top end surface, wherein the formwork is removed.

According to a fifth aspect of the present invention, a pair of formwork for forming a continuous rising portion of a foundation is arranged in parallel at a predetermined interval, and a shaped steel is placed at a predetermined height inside the formwork. Using a shaped steel support to support, place the top-end mounted steel in the formwork, pour concrete inside the formwork,
A method for constructing a foundation having a shape steel disposed on a top end surface thereof, comprising removing the form after hardening of concrete.

According to a sixth aspect of the present invention, in the fifth aspect, the top-end-mounted shaped steel is suspended and supported by the shape steel support by a magnet fixed to the lower surface of the shape steel support.

According to a seventh aspect of the present invention, in the fourth to sixth aspects, the anchor bolts are positioned before pouring concrete, or are in a flowing state, through the bolt insertion holes provided in the top mounting steel. It is characterized in that it is inserted and positioned in concrete and is held in this state until the concrete hardens.

<Operation> In the present invention, since the top face of the concrete foundation is constructed in a state where the section steel is previously installed on the top face of the concrete foundation, the top face is not subjected to any special flattening work. Both are in close contact with the inner surface of the section steel web and are flat from the beginning, so there is no need for skilled techniques for flattening the top end face when casting concrete as in the past, or omit the flattening work There is no need for special concrete such as self-leveling concrete.

Further, the anchor bolts embedded in the concrete of the foundation are passed through bolt insertion holes provided in the top end mounting channel formed so as to cover the top end face of the foundation.
Anchor bolts are positioned before pouring concrete, or are inserted and positioned in concrete that is in a flowing state in the formwork, so that they can be buried in the correct position, and the anchor bolts can be used at the time of concrete driving as in the past. The pressure and the fluidity of the concrete cause the displacement from a predetermined position, and further, the problems caused by the displacement at the time of joining with the upper structure and the necessity of correction are solved.

Still further, according to the present invention, since the base is not in direct contact with the concrete of the foundation due to the presence of the top-mounted steel, the conventional wooden base and the concrete of the foundation are in contact with each other. In addition, the problem that the base is easily corroded by the moisture and the like contained in the concrete is also solved.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment 1> FIG. 1 is an exploded perspective view of a foundation of the embodiment 1, FIG. 2 (A) is a sectional view of the foundation, and FIG. 2 (B).
FIG. 2 is a perspective view of a top-end mounted steel shape. FIG.
(E) is an explanatory view of a foundation construction procedure of Embodiment 1.

1 and 2, on the top end surface 2 of a concrete foundation 1, a top-end mounting steel (channel steel) 19 having a U-shaped cross section is placed downward.
Web 19a is in surface contact with the top end face 2 of the foundation 1 over the entire length in the longitudinal direction, and both flanges 19b sandwich the top end of the foundation 1 therebetween. Top mounted steel 19
Is formed by forming a thin steel plate by roll forming.

From the top end face 2 of the foundation 1, anchor bolts 20 that are integrally planted on the foundation 1 when concrete is cast
Protrude at predetermined intervals in the longitudinal direction of the foundation 1. On the other hand, the web 19a of the top-end mounting steel 19 has
A plurality of elongated bolt insertion holes 21 are provided at predetermined intervals in the length direction, and the above-described anchor bolt 20 projects upward through the bolt insertion hole 21.

The top-end-mounted steel 19 has a lower wall frame 2
2 is placed. The lower wall frame 22 is attached to the top end of the shaped steel 1
9, the anchor bolts 20 are inserted into the bolt insertion holes 23 of the lower wall framework 22, and the nuts are fastened to fix the vertical wall framework 24 and the lower wall framework 22 to the foundation 1. The other parts of the top end mounting steel 19 and the lower wall frame 22 are also fixed by the anchor bolts 20 in substantially the same manner.

In the first embodiment, the top-mounted steel member 1
9 is not placed on the top end face 2 of the foundation 1 after the concrete of the foundation 1 is cast, but is placed in advance on the top end face at the time of placing the concrete, and the concrete to be cast is placed in advance. Is placed in close contact with the groove.
Therefore, when the poured concrete is hardened, the top end face 2 of the foundation 1 is flat, and the foundation 1 is built in close contact with the channel steel 19 without any gap.

The construction procedure of the first embodiment will be described with reference to FIG. In order to form a continuous rising portion 1a of a predetermined width of the foundation (cloth foundation) 1, a pair of molds 27 are arranged in parallel at a predetermined interval. As shown in FIG.
Inside the formwork 27 and at a predetermined height position, a protruding shaped steel receiver 28 is provided by bonding and ensuring horizontal accuracy in the left and right directions. Next, as shown in FIG. 3 (B), concrete 29 is poured into the inside of the formwork 27,
The filling is performed to a predetermined height position above the shape steel receiver 28.
Next, as shown in FIG. 3 (C), the channel steel 19 is covered so as to cover the upper part of the concrete 29, and the ends of both flanges are received by the shape steel receiver 28. At this point, the concrete 29 in the flowing state closely adheres to the channel steel 19 without any gap, and therefore, when the concrete hardens, the top end surface 2 becomes a smooth surface.

Next, as shown in FIG.
9, the anchor bolt 20 is inserted into the flowing concrete 29 through the bolt insertion hole 21 and the positioning nut 30 is installed to position the anchor bolt 20. In this state, the concrete 29 has a predetermined hardness. Wait for Next, as shown in FIG. 3E, when the concrete 29 has hardened to a predetermined hardness, the formwork 27 is removed and the foundation 1 is completed. At this time, the shaped steel receiver 28 remains on the hardened concrete.

3A to 3E, the foundation 1 on which the top-end mounting shaped steel 29 is disposed on the top end face 2 at the time of completion of the foundation 1 is constructed. You. Therefore, the top end surface 2 of the foundation 1 is smoothed by the web surface of the channel steel 19 without performing the work of smoothing the top end surface by the conventional self-level concrete.

In the following embodiments, the same elements as those of the other embodiments are denoted by the same reference numerals, and description thereof will be omitted.

<Embodiment 2> FIGS. 4 and 5 show Embodiment 2 of the present invention, and show an example in which a crown-mounted steel shape can also be used as a joist or large-scale receiving member. In the second embodiment, a large-scale (or joist) 3
In order to support the first embodiment, the channel steel 19c is used in the first embodiment.
However, other configurations are the same as those of the first embodiment.

In the top end mounting shaped steel 19c of the second embodiment, one side flange is formed as a long flange 19d and extends downward along one side surface of the foundation 1, and the long flange 19d has a U-shape. A notch with an opening facing sideways is made, and the cut portion is cut and raised at a right angle toward you.
2 are provided at predetermined intervals in the longitudinal direction. Further, a horizontal bent portion 33 formed by bending the lower end outward at a right angle is provided at the lower end of the long flange 19d. Then, the end of a large (or joist) 31 made of a channel steel and having a U-shaped opening arranged sideways is applied to the long flange 19d, and the lower flange 31a.
Is placed on the horizontal bent portion 33, the cut and raised joint piece 32 at a predetermined portion is overlapped with the web 31b, and the overlapped portion is screwed together with a drill screw 34, whereby a large pull (or joist) is obtained. ) 31 is fixed to the long flange 19c.

The construction procedure for constructing the foundation of the second embodiment is as follows.
Although the construction procedure is substantially the same as that of the first embodiment, the assembly of the formwork is slightly different because the configuration of the long flange 19d and the horizontal bent portion 33 of the top end-mounted steel 19c is different from that of the first embodiment. Specifically, in the second embodiment, the top-end mounting shaped steel 19c is used as a part of a form-filling formwork, and is applied to the long flange 19d, the web 19a, the other flange b, and other parts. By forming a concrete formwork with the formwork member and filling the inside of the formwork with the concrete, the foundation 1 on which the top end face 2 is a closed end and the top end mounting shaped steel 19c is placed on the top end face 2 is placed. Is constructed.

Third Embodiment FIGS. 6 and 7 show a third embodiment of the present invention. In the third embodiment, when the foundation concrete is poured into the formwork 27, the top-end mounting shaped steel 19 is placed on the protruding shaped steel receiver 28 bonded to the formwork 27 as in the first embodiment. However, the present embodiment is different from the first embodiment in that the top-end mounting shaped steel 19 is supported by the shaped steel support 40 arranged on the formwork 27.

Shaped steel support 40 used in Embodiment 3
As shown in FIG. 7 (A), a mounting tool 41 having an L-shaped section
And a shape steel support member 42 having an L-shaped cross section, the upright portion of which is longer than the attachment a. For example, a thin steel plate is used for the attachment 41 and the shaped steel support member 42.

Further, fastener holes 41b and 42b are formed in the upright portions (41a and 42a) of the mounting member 41 and the shaped steel support member 42, respectively. Positions of these fasteners are adjusted (horizontal bent portions 42 of the shaped steel support members 42).
One or both of them are preferably long holes so that horizontal accuracy between c is easily ensured. The mounting member upright portion 41a and the shaped steel support member upright portion 42a are back-to-back, and are joined by fasteners 43 such as bolts, thereby forming the shaped steel support member 40.

The construction procedure of the third embodiment will be described with reference to FIG. First, as shown in FIG. 6 (A), a template 44 supporting the anchor bolts 20 is arranged on a pair of molds 27 arranged in parallel at a predetermined interval. While placed in the concrete 2
9 is filled in the mold 27. Then, after the concrete 29 in the mold 27 has hardened, the mold 44 is removed.

Next, as shown in FIG. 6 (B), after adjusting the mounting position of the section steel support 40 so as to secure the horizontal accuracy between the horizontal bent portions 42c, the section steel support 40 is removed. A pair is placed on the mold 44 in a unit. At this time, the horizontal bent portion 41c of the attachment 41 is placed on the upper end of the mold 27,
The horizontal bent portion 42c of the shaped steel support member 42 is
It is located inside. Further, the shaped steel support 40 is fixed to the formwork 27 with tape or the like as necessary.

Next, the horizontal bent portion 4 of the section steel support member 42
A top-end mounting shaped steel 19 is arranged on 2c (FIG. 6).
(C)). In the third embodiment, the top-mounted steel member 19 is used.
Are provided with holes for mortar removal as appropriate. And
Inside the top-mounted steel 19, add concrete 29
(See FIG. 6 (D)), and after the concrete 29 in the section steel 19 has hardened, the formwork 27 and, if necessary, the section steel support 40 are removed to construct the foundation 1 ( FIG.
(E)).

<Fourth Embodiment> FIGS. 8 and 9 show a fourth embodiment of the present invention. The fourth embodiment is substantially the same as the third embodiment, but in the fourth embodiment, a magnet 47 is fixed to the lower surface of the horizontal bent portion 46c of the shaped steel support member 46, and the top end mounting steel 19 is fixed by the magnet 47. Is different from that of the third embodiment in that it is suspended and supported.

Shaped steel support 45 used in Embodiment 4
As shown in FIG. 9 (A), the mounting tool 41 and the shaped steel support member 46 are combined, and the mounting tool upright portion 41a and the shaped steel support member upright portion 46c are back-to-back and joined by the fastener 43. It is composed of The section steel support member 46 is different from the section steel support member 42 in that a magnet 47 for suspending the top-end mounted section steel 19 is fixed to the lower surface of the horizontal bent portion 46c. Is the same as the shape steel support member 42.

The construction procedure of the fourth embodiment will be described with reference to FIG. First, as shown in FIG. 8A, a template 44 supporting the anchor bolts 20 is arranged on a pair of molds 27 arranged in parallel at a predetermined interval. The concrete 29 is filled in the formwork 27 while being placed in the mold 27. Then, after the concrete 29 in the mold 27 has hardened, the mold 44 is removed.

Next, as shown in FIG. 8 (B), the mounting position of the section steel support 45 is adjusted in order to secure the horizontal accuracy between the horizontally bent portions 46c. Then, as shown in FIG. 8 (C), a pair of shaped steel supports 45 are placed on the formwork 27, and the magnets 47 fixed to the lower surface of the horizontal bent portion 46c.
This suspends and supports the top-end mounted shaped steel 19 (see FIG. 6C). In the fourth embodiment, the top-mounted steel member 1
9 is provided with holes for mortar removal as appropriate.

Then, concrete 29 is further filled into the inside of the shape steel 19 attached to the top end (see FIG. 8 (D)).
Then, the foundation 1 is constructed by removing the shape steel support 45 (see FIG. 8E).

FIG. 9 (C) shows another embodiment of the shaped steel support 45 in the fourth embodiment.
And a section steel support having a U-shaped cross section and a section steel support member 48 made of a thin steel plate.

The web portion 48a of the section steel support member 48
Is slightly shorter than the interval between the molds 27, and the web portion 48
a fits between the molds 27. And
A magnet 45 for suspending the section steel 19 is fixed to the lower surface of the web portion 48a (outer surface of the web portion).
A hole 48b for inserting an anchor bolt is formed at the center of a. Also, the flange portion 48c of the shaped steel support member 48
Is provided with a fastener hole (elongated hole) 48d.
The shape steel support in FIG. 9 (C) is configured by arranging the opening of the shape steel support member 48 facing upward, and joining a pair of attachments 41 to the outside of the flange portion 48c by fasteners 43, respectively.

<Fifth Embodiment> FIGS. 10 to 12 show a fifth embodiment of the present invention. In the fifth embodiment, a pair of L-section steels 19e is used as the top-end mounting section steel (FIG. 1).
0). At the time of construction of the fifth embodiment, the L-shaped steel 19e
Is suspended and supported in the formwork 27 by a magnet 47 fixed to the lower surface of the web portion 50a of the shaped steel support member 50.

Shaped steel support 49 used in Embodiment 5
As shown in FIG. 12, a section steel support member 50 made of a thin steel plate having a U-shaped cross section and a fixture 51 are combined.

Here, the web portion 50 of the section steel support member 50
The length of the web part 50 is slightly shorter than the interval of the
a fits between the molds 27. And
The L-shaped steel 19e is provided on the lower surface of the web portion 50a (the outer surface of the web portion).
A magnet 47 for suspending the anchor is fixed, and an anchor bolt insertion hole 50b is opened at the center of the web portion 50a. Also, the flange portion 50 of the shaped steel support member 50
A fastener hole (elongated hole) 50d is opened in c.

On the other hand, the fixture 51 has an upwardly-facing rectangular convex portion 51a at the center, and has outwardly bent horizontal bent portions 5 at both ends.
1b is formed. Rectangular convex portion 51a in the fixture
Is slightly longer than the width of the shaped steel support member 50, so that the shaped steel support member 50 fits inside the rectangular convex portion 51a. Anchor bolt insertion holes 51c are formed in the rectangular convex portion 51a in correspondence with the positions of the anchor bolt insertion holes 50b of the shaped steel support member 50.

A fastener hole 51d is formed on the side surface of the rectangular projection 51a of the fixture. The length of the side surface of the rectangular convex portion 51a is equal on both sides,
The horizontal bent portions 51b are located at the same height. And the shape steel support member 49 arrange | positions the opening part of the shape steel support member 50 upward, and joins the flange part 50c of the shape steel support member 50 and the side surface of the rectangular convex part 51a of the attachment tool 51 with the fastener 43. It is constituted by.

The construction procedure of the fifth embodiment will be described with reference to FIG. First, as shown in FIG. 11A, in order to secure horizontal accuracy between the web portions 50a, the shaped steel support 49 is used.
Is mounted on a pair of molds 27 arranged in parallel at a predetermined interval. Here, a pair of L-section steels 19e are suspended and supported by magnets 47 at both ends of the lower surface of the web portion 50a (outer surface of the web portion) of the shaped steel support member 50 in an opposed state. In the fifth embodiment, the shaped steel support 49 serves as a template for supporting the anchor bolt.

Next, as shown in FIG. 11B, concrete 2 is placed inside the formwork 27 up to the lower end position of the L-shaped steel 19e.
Fill 9 Then, after the concrete 29 is hardened, L
The self-leveling concrete 52 is filled up to the position of the upper end (the height of the top end surface) of the section steel 19e (see FIG. 11C). That is, in the fifth embodiment, the L-shaped steel 19e functions as a ruler for positioning the top end surface 2.

Then, self-leveling concrete 5
After the 2 has hardened, the formwork 27 and the shaped steel support 49 are removed, and the foundation 1 is constructed (see FIG. 11D). The L-section steel 19e is in close contact with the top end face 2 of the foundation 1 in surface contact over the entire length in the length direction, and remains in hardened concrete and contributes to smoothing the top end face 2 (see FIG. 10).

[0057]

According to the present invention, the shaped steel placed on the top face of the concrete fabric foundation is constructed in a state where it is installed at the top face position before the concrete is hardened. Can be adhered over the entire length in the longitudinal direction, and a foundation capable of stably supporting the upper structure can be constructed. Therefore, after the concrete of the foundation is hardened as in the past, such as the case where the foundation is installed on the top end face of the foundation, there are problems such as unstable support of the upper structure due to poor adhesion to the base due to unevenness of the top end face. Will be resolved.

Further, the problem that the anchor bolt buried in the foundation concrete is displaced from a predetermined position due to the pressure at the time of concrete casting and the fluidity of the concrete is solved. Inconveniences such as forced operation are eliminated. Further, by providing the channel steel at the top end, contact between the wooden base and the concrete of the foundation can be avoided, and the problem that the base is corroded by moisture and the like contained in the concrete is solved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a basic structure according to a first embodiment of the present invention.

FIG. 2A is a cross-sectional view at the time of construction of FIG. 1;
(B) is a perspective view of the top end mounting steel and the anchor bolt.

FIG. 3 is an explanatory diagram of a construction procedure of a foundation according to the first embodiment.

FIG. 4 is an exploded perspective view of a basic structure according to a second embodiment of the present invention.

FIG. 5A is a cross-sectional view at the time of construction of FIG. 4;
(B) is a perspective view of the top end mounting steel and the anchor bolt.

FIG. 6 is an explanatory diagram of a construction procedure of a foundation according to a third embodiment.

FIG. 7A is an exploded perspective view of a shaped steel support of the third embodiment, and FIG. 7B is a completed perspective view of the shaped steel support of the third embodiment.

FIG. 8 is an explanatory diagram of a construction procedure of a foundation according to a fourth embodiment.

FIG. 9A is an exploded perspective view of the shaped steel support of the fourth embodiment, and FIG. 9B is a completed perspective view of the shaped steel support of the fourth embodiment. (C) is an exploded perspective view of another mode in the shaped steel support of (A).

FIG. 10 is a perspective view of a basic structure according to a fifth embodiment of the present invention.

FIG. 11 is an explanatory diagram of a foundation construction procedure according to a fifth embodiment.

FIG. 12 is an exploded perspective view of a shaped steel support according to a fifth embodiment.

FIG. 13 is an exploded perspective view of a basic structure according to Conventional Example 1.

FIG. 14 is an exploded perspective view of a basic structure according to Conventional Example 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Foundation 2 Top end surface 3 Support plate 4 Base 5 Lower horizontal wall frame 6 Column 7 Hole-down hardware 8 Anchor bolt 10 Fixing bolt 12 Depression 13 Channel steel 14 Reinforcement metal 15 Anchor bolt 16 Lower wall frame 17 Fixing bolt 18 Column frame 19 Top-end mounting steel (channel steel) 19a Web 19b flange 19c Top-end mounting steel 19d Long flange 19e L-shaped steel (top mounting steel) 20 Anchor bolt 21 Bolt insertion hole 22 Wall frame 23 Bolt insertion hole 24 Vertical wall frame 25 Gusset plate 26 Bolt insertion hole 27 Formwork 28 Shaped steel receiver 29 Concrete 30 Locating bolt 31 Large pull 32 Joint piece 33 Horizontal bent part 40 Shaped steel support 41 Mounting tool 41a Upright part 41b Fastener hole 41c Horizontal Bent part 42 Shaped steel support member 42a Upright Part 42b Fastener hole 42c Horizontal bent part 43 Fastener 43a Nut 44 Type plate 45 Shaped steel support tool 46 Shaped steel support member 46a Upright part 46b Fastener hole 46c Horizontal bent part 47 Magnet 48 Shaped steel support member 48a Web part 48b Anchor bolt insertion hole 48c Flange part 48d Fastener hole 49 Shaped steel support tool 50 Shaped steel support member 50a Web part 50b Anchor bolt insertion hole 50c Flange part 50d Fastener hole 51 Mounting tool 51a Rectangular convex part 51b Horizontal bent part 51c Hole for anchor bolt insertion 51d Hole for fastener 52 Self-leveling concrete

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) E04B 1/58 510 E04B 1/58 510C (72) Inventor Jun Shimizu 2-6-3 Otemachi, Chiyoda-ku, Tokyo New Japan F term (reference) in Steel Corporation 2D046 AA03 AA18 BA12 BA24 2E125 AA45 AB05 AC14 BA07 BA22 BD01

Claims (7)

[Claims] Claims: 1. A top-end mounting section steel is provided on a top-end face of a concrete foundation, and the top-end face is
A foundation structure, wherein the foundation concrete is flattened before being hardened by contacting the top mounting steel section located at the top position. 2. Anchor bolts are installed in the unhardened base concrete through anchor bolt installation holes formed in the top-end mounting shaped steel, whereby the anchor bolts are positioned and planted in the base concrete. The structure of a foundation according to claim 1, characterized in that: 3. The structure of a foundation according to claim 1, wherein the top-end-mounted shaped steel also functions as a form-fitting form member at the time of placing the foundation concrete. 4. A pair of formwork for forming a continuous rising portion of a foundation is arranged in parallel at a predetermined interval, and a shaped steel receiver is provided inside the formwork and at a predetermined height position. It is provided, concrete is poured into the inside of the formwork, after filling to a predetermined height position, the top end mounting shaped steel is covered so as to cover the upper part of the concrete, received by the shaped steel receiver, and the concrete is hardened. A method of constructing a foundation having a shape steel disposed on a top end face, wherein the formwork is removed. 5. A pair of formwork for forming a continuous rising portion of a foundation is arranged in parallel at a predetermined interval,
Using a shaped steel support that supports the shaped steel at a predetermined height position inside the formwork, place a top-end mounting shaped steel inside the formwork, pour concrete inside the formwork, and harden the concrete. A method of constructing a foundation having a shape steel disposed on a top end face, wherein the formwork is removed. 6. The shape steel is mounted on the top end face according to claim 5, wherein the shape steel mounted on the top end is suspended and supported by the shape steel support by a magnet fixed to the lower surface of the shape steel support. How to build the established foundation. 7. Anchor bolts are positioned before pouring concrete or inserted and positioned in concrete in a flowing state, through bolt insertion holes provided in the top end mounting shaped steel, and the concrete hardens in this state. 7. The method according to claim 4, wherein the holding is performed until the operation is performed.
The method for constructing a foundation on which a shaped steel is disposed on a top end surface according to any one of the above.