JP2745442B2 - Foundation structure of building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation structure of a building.

[0002]

Conventionally, as the basis structure of the building, JP-A-5
There is a precast concrete cloth foundation structure described in 4-47311. In this prior art, a precast panel arranged along a floor beam of a building is placed on a wedge for level adjustment arranged on the ground, and after adjusting the top level of the precast panel by taking in and out the wedge, A foundation footing formwork is attached around the base of the precast panel, and concrete is cast in place to form a foundation footing.

[0003]

However, the prior art has the following problems. Since the width of the foundation footing of the cloth foundation varies depending on the building load, the correspondence to various building plans becomes complicated. That is, plan compatibility is poor.

[0004] The precast panel, which is the rising portion of the fabric foundation, is a large heavy object and requires a large lifting machine. Also, the precast panel is not self-supporting, is difficult to stand up, and is difficult to position in the horizontal direction and adjust the top end level. That is, the installation workability is poor.

[0005] It takes a lot of time to manage the basic footing formwork and to clean up the remaining formwork material. That is, on-site workability is poor.

Due to the above, the construction period of the foundation work is long. Because it is a cloth foundation, it is difficult to deal with soft ground, and poor underfloor piping and underfloor ventilation.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the compatibility with a building plan, installation workability, on-site construction, construction period, compatibility with soft ground, and the like in a foundation structure of a building.

[0008]

Means for Solving the Problems The present invention according to claim 1, in basic structure of the building, the precast concrete beam Ru receiving intensive installation has been building load immediately below the column location in the building floor surface the A side plate that is installed along the outer periphery of the building floor and does not bear the building load, and a solid foundation that is formed by casting concrete in the entire area including the bundle around the side plate. It is.

According to a second aspect of the present invention, in the first aspect of the present invention, the bundle further includes a fixing bar connected to a base reinforcing bar of the solid foundation.

According to a third aspect of the present invention, in the first aspect of the present invention, the bundle further comprises three or more level adjusting bolts which are screwed from the upper end to the lower end. In addition, the lower end of each level adjusting bolt is mounted on a metal receiver arranged on the ground.

According to a fourth aspect of the present invention, in the third aspect of the present invention, a suspension hook is provided at an upper end of the level adjusting bolt.

[0012]

According to the first aspect of the present invention, the following:
Has the effect of Building loads act on the bundles intensively from the columns and are thus supported on solid foundations. At this time, the width of the bundle can be made substantially constant, and the correspondence to various building plans is simplified. That is, plan compatibility is good.

[0013] Precast concrete bundles are small and lightweight
And does not require a large lifting machine.Also, the bunch
In addition to being small and lightweight, it has good autonomy and
Easy, horizontal positioning and top level adjustment
Easy.That is, the installation workability is good.

Since the side plate can be used as a formwork, the work of managing the formwork and clearing the remaining formwork can be omitted. That is, the on-site workability is good.

By the above, the construction period of the foundation work can be shortened. Because it is a solid foundation, building loads can be widely distributed over the ground, and it is suitable for soft ground. In addition, since there is no cloth foundation for dividing the underfloor, the underfloor piping and the underfloor ventilation are good.

The side plates located on the outer periphery of the building floor surface are:
Because it is not made of cast-in-place concrete,
Without using a mortar finish or the like, it can be used as a cosmetic material itself, and the apparent finish quality can be improved.

According to the present invention, the following effects are obtained. The bundle is erected on the solid foundation through the entanglement between the anchors of the bundle and the base reinforcement of the solid foundation. Therefore, the load acting on the bundle can be reliably transmitted to the solid foundation, and the quality is stabilized.

According to the third aspect of the present invention, the following operations are provided. The bundle can be self-supporting with three or more level adjustment bolts like legs. Further, the lower end portion of the level adjusting bolt protruding from the lower end of the bundle can be slid lightly on the receiving metal, and horizontal positioning is easy. Further, by adjusting each level adjusting bolt by screwing and adjusting the amount of projection of the bolt from the lower end of the bundle, adjustment of the top end level becomes easy. Therefore, the installation workability can be improved.

According to the fourth aspect of the present invention, the following operations are provided. By providing the suspension hook at the upper end of the level adjustment bolt, the work of lifting and installing the bundle can be improved. Also,
The screwing operation of the level adjusting bolt can be performed at the level above the top end of the bundle, and the operator can easily adjust the top end level at waist height.

[0020]

FIG. 1 is a schematic view showing an embodiment of the present invention, and FIG.
Is a schematic view showing a precast concrete bundle, FIG. 3 is a sectional view of a main part of FIG. 2, FIG. 4 is a schematic view showing a side plate, FIG. 5 is a schematic view showing an installation process of the precast concrete bundle, and FIG. FIG. 7 is a schematic view showing a building unit, and FIG. 8 is a schematic view showing another embodiment of the present invention.

The foundation 10 shown in FIG. 6 supports a building constructed by combining, for example, the building unit 11 (or a wooden unit) shown in FIG. 7, and transmits the load to the ground.

The building unit 11 includes a floor beam 12 and a ceiling beam 1.
3. A frame structure in which the pillars 14 are joined in a box shape.

However, the foundation 10 is shown in FIGS. 1 (A) and 1 (B).
As shown in the figure, a precast concrete bundle (hereinafter referred to as a PC bundle) 21 installed immediately below the pillar 14 in the building floor surface
And a side plate 22 installed along the outer periphery of the floor of the building, and a solid foundation 23 formed by casting concrete on the entire area including around the PC bundle 21 in the side plate 22. After the PC bundle 21 and the side plate 22 are manufactured in a factory in advance, they are carried to the site and used.

At this time, the PC bundle 21 has a smooth top end as shown in FIG.
1 is provided with an anchor bolt 21 </ b> A which is tightly connected to the anchor bolt 21.

The PC bundle 21 is shown in FIGS.
As shown in FIG. 1A, an anchoring bar 25 is provided which is connected to a base bar 24 of the solid foundation 23. When the PC bundle 21 is placed on the solid base 23 on the whole or a part of the base 10, the fixing streaks 25 are unnecessary.

Further, the PC bundle 21 is shown in FIG.
(B), as shown in FIG. 3, three or more level adjustment bolts 26 are screwed through from the upper end to the lower end, and the lower end of each level adjustment bolt 26 is a flat plate disposed on the ground. It is placed on the receiving money 27 in the shape of a letter. A suspending hook 26A is provided at the upper end of the level adjusting bolt 26.

The level adjusting bolt 26 is screwed to a lower end nut 29 of a bolt insertion pipe 28 embedded in the PC bundle 21. A washer 30 and a nut 29 are welded and integrated at the lower end of the bolt insertion pipe 28 in advance. The washer 30 is for transmitting a hanging load to concrete.

The receiving money 27 can be replaced with a pile-shaped receiving money 31 shown in FIG. The receiving metal 31 is driven into a predetermined position on the ground, and has a concave top surface 32 that supports the lower end of the level adjusting bolt 26 in a centered manner.

The side plate 22 is provided with a ventilation hole 33 shown in FIG.
4B, an inspection hole 34 shown in FIG. 4B, a concrete holder shown in FIG. 4C, etc. can be appropriately selected and used. FIG. 1A is an application example of the side plate 22 having the ventilation hole 33, and FIG. 8 is an application example of the side plate 22 dedicated to the concrete presser.

Next, the procedure for constructing the foundation 10 will be described. (1) The PC bundle 21 is carried in just below the pillar position on the floor of the building. At this time, the hanging hook 26A is used (see FIG. 5A). Then, the lower end of the level adjustment bolt 26 is placed on the receiving metal 27 arranged on the ground.

(2) The horizontal position of the PC bundle 21 is determined by sliding the lower end of the level adjusting bolt 26 on the metal receiving 27. The top end level of the PC bundle 21 is adjusted by screwing the level adjustment bolt 26 (FIG. 5).
(See (B) and (C)).

(3) The side plate 22 is installed along the outer periphery of the building floor. (4) Base on the whole area including around the PC bundle 21 in the side plate 22
Reinforcing bar 24 is installed, concrete is cast in place here ,
The solid foundation 23 is formed. After that, the level adjusting bolt 26 of the PC bundle 21 is removed. In addition, since the cast concrete of the solid foundation 23 is not filled up to the lower end of the PC bundle 21, the level adjustment bolt 26 can be removed.

According to the practice of the present invention, the construction period of the foundation 10 is only two days, and the first day is a plow, a gravel lay, a method of use, and a PC.
The bundle 21 was installed and the side plate 22 was installed. On the second day, the base reinforcement 24 was installed, the solid foundation 23 was placed, and backfilling was performed.

With the floor area of the building of 70 m ² , the number of man-hours required in the field can be reduced to four according to the present invention, compared to the conventional ten man-made.

The operation of this embodiment will be described below. The building load acts on the bundle 21 intensively from the columns 14 and is thus supported by the solid foundation 23. At this time, the width dimension of the bundle 21 can be made substantially constant, and the correspondence to various building plans is simplified. That is, plan compatibility is good.

The precast concrete bundle 21 is small and lightweight, and does not require a large lifting machine. Also,
The bundle 21 is small and lightweight, and has good self-sustainability.
Easy to raise, horizontal positioning, top level
Is easy to adjust. That is, the installation workability is good.

Since the side plate 22 can be used as a mold,
The management of the formwork and the trouble of clearing the remaining formwork material can be omitted. That is, the on-site workability is good.

With the above, the construction period of the foundation work can be shortened. Because of the solid foundation 23, the building load can be widely dispersed on the ground, and it is suitable for soft ground. In addition, since there is no cloth foundation for dividing the underfloor, the underfloor piping and the underfloor ventilation are good.

The side plate 22 located on the outer periphery of the building floor surface
Since is not formed by cast-in-place concrete, it can be used as a decorative material itself without applying mortar finish or the like, and the apparent finish quality can be improved.

The side plate 22 has a ventilation hole 33 and an inspection hole 34.
And the like, the fit is good, and the apparent finish quality can be improved.

The bundle 21 is erected on the solid base 23 through the entanglement between the fixing streaks 25 of the bundle 21 and the base reinforcement 24 of the solid foundation 23. Therefore, the load acting on the bundle 21 can be reliably transmitted to the solid foundation 23, and the quality is stabilized.

The bundle 21 has three or more level adjusting bolts 2
6 can be self-supporting like a leg. Further, the lower end portion of the level adjusting bolt 26 protruding from the lower end of the bundle can be slid lightly on the receiving metal 27, and horizontal positioning is easy. Also, by screwing each level adjustment bolt 26 and adjusting the amount of protrusion of the bolt 26 from the lower end of the bundle,
The top level can be easily adjusted. Therefore, the installation workability can be improved.

By providing the suspension hook 26A at the upper end of the level adjustment bolt 26, the workability of lifting and installing the bundle 21 can be improved. Further, the screwing operation of the level adjusting bolt 26 can be performed at a level above the top end of the bundle 21, and the operator can easily adjust the top level at waist height.

[0044]

As described above, according to the present invention, in the foundation structure of a building, it is possible to improve responsiveness to a building plan, installation workability, on-site workability, construction period, responsiveness to soft ground, and the like. .

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a schematic view showing a precast concrete bundle.

FIG. 3 is a sectional view of a main part of FIG. 2;

FIG. 4 is a schematic view showing a side plate.

FIG. 5 is a schematic view showing an installation process of a precast concrete bundle.

FIG. 6 is a plan view showing a foundation of a building.

FIG. 7 is a schematic diagram showing a building unit.

FIG. 8 is a schematic diagram showing another embodiment of the present invention.

[Explanation of symbols]

 10 Foundation 14 Pillar 21 Precast Concrete Bundle 22 Side Plate 23 Solid Foundation 24 Base Reinforcement 25 Fixing Reinforcement 26 Level Adjustment Bolt 26A Suspension Hook 27 Receipt

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuo Okajima 32-182, Chuchuyama Noda, Nagakute-cho, Aichi-gun, Aichi Prefecture JP-A-4-209234 (JP, A)

Claims (4)

(57) [Claims] In a foundation structure of a building, a building load is installed immediately below a column position in a building floor.
And precast concrete beams Ru received intensive and, Do not bear the building load is placed along the outer periphery of the building floor
Infrastructure of the building, characterized and have side plates, to become and a solid basis is formed by cast-in-place concrete in whole comprising a bundle around the side plate. 2. The foundation structure of a building according to claim 1, wherein the bundle includes anchoring bars connected to a base reinforcement of a solid foundation. 3. The bundle includes three or more level adjustment bolts that are screwed through from the top end to the bottom end, and the lower end of each level adjustment bolt is mounted on a metal receiver disposed on the ground. The foundation structure of a building according to claim 1, which is mounted. 4. The foundation structure of a building according to claim 3, wherein a suspension hook is provided at an upper end of the level adjustment bolt.