JP2979117B2 - Building foundation method - 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 method for a warehouse, an apartment house and other reinforced concrete buildings.

[0002]

2. Description of the Related Art In order to form the foundation of a building such as an underground beam and a column foundation with reinforced concrete, a root is cut, a formwork is assembled at the bottom of the root, and concrete is arranged in the formwork and concrete is laid. Casting, demolding and backfilling the sides of the concrete foundation thus formed.

[0003] In some cases, the root is cut with a horizontal sheet pile or the like, but if the width of the upper opening is made wider than the bottom to maintain the angle of repose, the mountain cut may not be necessary. The backfill soil at the time of root cutting is kept in a temporary storage place until the concrete of the foundation is completed.

[0004]

As described above, since backfill cannot be conventionally performed until the foundation is completed, a temporary storage site for backfill soil at the time of root cutting is required. In order to proceed, the working floor is deepened and side scaffolds are required.

[0005] In addition, when viewed in a plan view, the extra dug portion is large, so that it takes up space and it is difficult to secure a working passage and a place to use as a material storage area, and this is supplemented by a passage scaffold, a stage, and the like. Is the current situation.

[0006] Further, after the root is cut, the rebar is assembled. However, since there is no place for supporting the column bar and the place for supporting the main beam rebar, a ground scaffold is required.

[0007] An object of the present invention is to solve the disadvantages of the prior art, and to allow backfill of root excavation to be immediately buried, so that there is no need for a temporary storage site for backfill soil and it is easy to secure a work floor. To provide a foundation method for buildings that can improve safety, eliminate the need for footing for beam main bars and column bars, eliminate waste in process and cost, and streamline construction. It is in.

[0008]

According to the present invention, in order to attain the above object, first, after root cutting is completed, a wave corrugated steel sheet is formed so that wave peaks are continuous in the horizontal direction, and upper and lower portions thereof are lightened. Panels reinforced with channel steel are assembled as formwork materials such as underground beams and column foundations, and this formwork material is used as earth retaining material, and the outside is back-filled. To form a foundation, stand on a light channel steel at the upper part of the panel, and form a pillar support bar by bridging a cross member to this pillar. .

Secondly, the lower part of the panel is welded and fixed to an angle member fixed on a discarded concrete with a hole-in anchor using this as a ruler. Third, the upper part of the panel is formed at a connection corner between the panels. The horizontal fired angle is fixed by welding on the outside, or a beam made of angle material is erected at appropriate intervals between panels, and in the middle of this beam material, a pile made of angled material that is driven in parallel outside the panel is installed. The main point is to connect the head with a reinforcing bar.

According to the first aspect of the present invention, a panel assembled as a formwork material such as an underground beam and a column foundation can be used as a buried foundation formwork that also serves as soil retention. Since it is possible to bury backfill in parallel with root excavation without placing concrete such as beams and removing the formwork, it is not necessary to set up a temporary storage site for backfilled soil and transport costs. In addition, since the backfilled part returns to its original position, it can be used for work passages, material storage, etc., eliminating the need for work passage scaffolding, material storage, stage scaffolding, etc. And the safety is less dangerous.

In addition, the provision of the pillar main support cradle makes it possible to eliminate the need for temporary pillar supporting scaffolds and the like.

According to the second aspect of the present invention, in addition to the above operation, as an example of fixing the lower part of the panel, the lower part of the panel is welded to an angle material fixed on a discarded concrete with a hole-in anchor as a ruler. It can be fixed accurately and easily.

According to the third aspect of the present invention, as an example of fixing the upper portion of the panel, the panel can be easily fixed by using a horizontal firing angle.

According to the fourth aspect of the present invention, the beam material erected at an appropriate interval on the upper portion of the panel not only has a function as a cut beam for fixing the upper portion of the panel, but also has a receiving material for the main beam of the beam. Available as Also, in the middle of the interval between the beams, the entire body moves at the time of backfilling by connecting the head with a pile made of angled material that is driven in parallel outside the panel and a reinforcing bar,
Deformation can be prevented.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a vertical sectional front view showing an embodiment of a construction part of an underground beam in a foundation method of a building according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a side view of the same.

In FIG. 1, reference numeral 1 denotes a root cut, and after the root cut, the panel 2 is assembled inside as a formwork material for an underground beam. This panel 2 is a roof deck plate V-50H,
A square wave steel plate 2a of t = 0.8 is used vertically, that is, the peaks of the waves are continuous in the horizontal direction, and the upper and lower portions of the square wave steel plate 2b are flowed laterally. 2b, the square wave steel plate 2a is sandwiched and screwed from the back-filling side (for each pitch) to be integrated. If the panel length is long and a vertical joint is formed, a light channel steel is also attached vertically to that part and screwed.

At first, the panel 2 is assembled by the root cutting 1
Disposal concrete 3 is arranged at the bottom of the slab, ink is printed thereon, and the angle members 4 previously cut at the beam width are arranged at appropriate intervals along the beam length. Fix with hole-in anchor 5.

Then, the lower portion of the panel 2 is fixed to the end of the angle member 4 by welding using the angle member 4 as a ruler.

On the other hand, the upper portions of the parallel panels 2 are provided at appropriate intervals with beam members 6 each having an angle material and having a cutting edge without a vertical piece at an end, leaving only horizontal pieces.
The edge of the light grooved steel 2b on the upper part of the panel 2 by welding
Fixed to. In addition, in order to take in the main beam of a beam inside the panel 2 and arrange it, it is desirable that one beam member 6 located at the end is detachable.

Further, in the middle of the beam members 6, outside the panel 2 and in parallel with the panel 2, an angle member 1
A pile 7 of about m is driven in, and the pile 7 is connected to the light channel steel 2b at the upper part of the panel 2 by a reinforcing bar 8.

In this way, the form material of the panel 2 is assembled so that the upper and lower sides thereof are fixed, and this is used as a soil retaining material, and a backfill 9 is applied to the outside thereof.

Further, the beam 6 is used as a temporary receiving material, on which a beam main reinforcement 10 at the upper end of the underground beam is placed, and furthermore, it is arranged inside the panel 2 and concrete is cast. To form underground beams. In the figure, reference numeral 11 denotes slab concrete.

In some cases, a pile with an angle material is attached to the panel 2 so as to extend downward, and the pile is driven into the pile. To fix the lower part of the panel 2.

Next, the construction of the foundation of the pillar to which the underground beam is connected will be described with reference to FIGS. 4 to 6. In this case as well, after the root is cut, the waste concrete 3 is disposed at the bottom of the root cut 1. An angle material 4 cut in advance by the length of the beam width is fixed on the end with a hole-in anchor 5 and arranged side by side, and a panel 2 is attached to the end of the angle material 4 using the angle material 4 as a ruler. The lower part is fixed by welding in the same manner as the underground beam.

An opening 12 is formed at a connection portion with the underground beam,
A light channel steel 13 is attached to the side of the opening 12 in order to connect with the panel 2 as a form member for forming the underground beam.

At the upper part of the panel 2, a horizontal firing angle 14 is welded and fixed to the connection corners of the panel 2 on the outside. The end of the horizontal firing angle 14 is fixed to the upper portion of the panel 2 as the form material by welding or the like.

Further, a pillar 15 made of an angle material is erected on the light channel steel 2b on the upper part of the panel 2, and a horizontal member 16 made of an angle material is laid over the pillar 15 to form a column main bar receiving stand having a box structure as a whole. 17 were provided.

After assembling the panel 2 as a form material as described above, the panel 2 is used as a soil retaining material, and a backfill 9 is applied to the outside thereof.
Further, the column main reinforcement 18 is assembled using the column main reinforcement receiving base 17 as a temporary receiving material, and concrete is cast to form a foundation of the column.

FIG. 7 shows a third embodiment of the present invention, in which there is a space between the slab 19 on the first floor and the ground to be buried. In this case, a general plywood formwork 20 is assembled on the panel 2 in the upper space portion, and a column-shaped upper main bar support 21 made of an angle material support and a horizontal member is placed on the beam 6 inside the formwork. Start up, receive the upper main reinforcement of the beam, assemble the lower main reinforcement and the hoop reinforcement, and cast concrete to construct the underground beam.

Also in this case, at the stage of assembling the panel 2, it is possible to perform backfilling 9 on the outside of the panel 2 as a soil retaining material.

[0031]

As described above, the foundation method for a building according to the present invention makes it possible to immediately fill back the excavated portion of the root cutting, so that a temporary storage site for backfill soil is not required, and the work floor is not required. It is also easy to ensure the safety, improve the safety, do not need the footing for supporting the beam main reinforcement and the column reinforcement, and can reduce the waste in the process and the cost and can rationalize the construction.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a first embodiment of a building foundation method according to the present invention.

FIG. 2 is a plan view illustrating a first embodiment of a building foundation method according to the present invention.

FIG. 3 is a side view showing a first embodiment of a building foundation method according to the present invention.

FIG. 4 is a vertical sectional front view showing a second embodiment of the building foundation method of the present invention.

FIG. 5 is a plan view showing a second embodiment of the building foundation method of the present invention.

FIG. 6 is a side view showing a second embodiment of the building foundation method of the present invention.

FIG. 7 is a vertical sectional front view showing a third embodiment of a building foundation method according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Root cutting 2 ... Panel 2a ... Square wave steel plate 2b ... Light channel steel 3 ... Discarded concrete 4 ... Angle material 5 ... Hole-in anchor 6 ... Beam material 7 ... Pile 8 ... Reinforcing bar 9 ... Backfilling 10 ... Beam main reinforcing bar 11 ... Slab concrete 12 ... Opening 13 ... Light channel steel 14 ... Horizontal firing angle 15 ... Strut 16 ... Horizontal member 17 ... Pillar main bar support base 18 ... Pillar main bar 19 ... Slab on the first floor 20 ... Plywood formwork 21 ... Upper main bar receiver

Claims (4)

(57) [Claims] After completion of root cutting, square wave corrugated steel sheets are formed so that wave peaks are continuous in the horizontal direction, and panels whose upper and lower portions are reinforced with light channel steel are used to form underground beams and column foundations. Assembled as a frame material, this mold material is backfilled as earth retaining material,
In addition, the reinforcement is arranged inside the formwork material, the concrete is cast, a foundation is formed, and a support is erected on the light channel steel at the upper part of the panel, and a horizontal member is laid over the support to support the column main reinforcement. A foundation method for buildings characterized by forming a gantry. 2. The method according to claim 1, wherein the lower part of the panel is welded and fixed to an angle member fixed on a discarded concrete with a hole-in anchor, using this as a ruler. 3. A horizontal firing angle is welded and fixed to the outside of the upper part of the panel at the connection corner between the panels.
Or the foundation method of a building according to claim 2. 4. An upper part of the panel is formed by arranging beam members made of an angle material at appropriate intervals between the panels, and in the middle of the beam members, a head made of an angle material pile and a reinforcing bar driven in parallel outside the panel. The foundation method for a building according to any one of claims 1 to 3, wherein the connection is performed.