JP3913593B2 - Construction method and earth retaining material for concrete soil in entrance porch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing a concrete soil portion in an entrance porch or the like and a soil retaining material.
[0002]
[Prior art]
For example, as shown in FIG. 5, as a method for constructing a concrete interstitial part in an entrance porch, it is possible to construct a foundation part 55 and an interstitial part 56 by one-time concrete punching. There is a method in which a foamed polystyrene box 51 with at least the upper surface and the surrounding four faces or all six faces closed is installed in the part, and concrete 53 is placed so that the foamed polystyrene box 51 is embedded. A cardboard box may be used in place of the foamed polystyrene box 51.
[0003]
[Problems to be solved by the invention]
However, the styrofoam box 51 and the cardboard box are lightweight. Therefore, it is necessary to take special measures so that the box 51 does not lift up when the concrete 53 is placed, and the construction is troublesome. It was.
[0004]
In addition, since the polystyrene box 51 and the cardboard box are hollow and are fragile in strength, it is necessary to arrange many slab bars on the upper part, and the slab concrete is hit thickly. There was a need.
[0005]
In view of the above-described conventional problems, the present invention can easily perform construction, for example, in the above-described basic soil-integrated construction method, and can reduce the amount of reinforcing bars and the amount of concrete poured. It is an object of the present invention to provide a method for constructing a concrete soil portion in an entrance porch that can be reduced.
[0006]
[Means for Solving the Problems]
The above-mentioned problem has a peripheral wall portion of a predetermined height, the upper surface side of this peripheral wall portion is opened, and a foamed polystyrene or the like that is integrally provided with a protruding portion that projects inwardly from the peripheral wall on the bottom side of the peripheral wall portion. Using lightweight earth retaining material,
After installing the earth retaining material, the earth is filled in the annular peripheral wall of the earth retaining material, and then concrete is placed so that the earth retaining material and the soil are embedded. It is solved by the method of building the concrete soil part in the entrance porch.
[0007]
In this method, since the lightweight earth retaining material is filled with soil, the filling earth is placed on the overhanging portion on the bottom side of the earth retaining material and is firmly fixed on the ground by the filling earth. The Therefore, even if concrete is placed so that the earth retaining material and the soil are embedded, the lightweight earth retaining material will not be lifted, and of course, the soil will not be lifted. The earth retaining material and the soil can be properly embedded in the concrete.
[0008]
The earth retaining material is open on the upper surface side, and simply filling the soil through the upper surface side causes the filling earth to rise on the overhanging part and to be in a regulated state. Therefore, it is not necessary to take any troublesome measures in the construction, and it is possible to easily form the lift regulation state, and it is possible to easily construct the concrete soil portion in the entrance porch or the like.
[0009]
In addition, since the soil retaining material is filled with soil, the soil supports the concrete part from below, so that the amount of concrete can be reduced and the amount of reinforcement is reduced or omitted. It is also possible to do.
Moreover, when employ | adopting said construction method in the construction of a building, what is necessary is just to fill the inside of the earth retaining material with the residual soil which arises in an architecture, and can use the residual soil effectively and can reduce the amount of residual soil.
[0010]
As the above earth retaining material,
The rising wall portion has an angled shape in plan view, and a corner portion with an overhanging portion projecting inward from the rising wall portion on the bottom side;
The rising wall has a straight line shape in plan view, and has a general part with an overhanging part protruding inward from the rising wall on the bottom side,
It is also possible to use one that is formed so as to form an annular peripheral wall part by connecting the four corner parts directly or through general parts.
[0011]
With the earth retaining material having this structure, it is possible to easily produce an earth retaining material having a large planar size by simply selecting the number of general parts used. Moreover, it is possible to form such a large plane-size earth retaining material with a small amount of material. Furthermore, it is possible to easily form earth retaining materials having different sizes.
[0012]
In particular, when the earth retaining material is composed of one kind of corner part and one kind of general part, such an earth retaining material can be advantageously formed in terms of cost.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0014]
The embodiment shown in FIG. 1 to FIG. 4 is a case where the present invention is applied to a method of constructing a concrete soil portion in a front porch of a building such as a house simultaneously with a concrete foundation portion. The foundation, 2 is the earth retaining material, 3 is the filling soil, and 4 is the concrete soil part.
[0015]
The earth retaining material 2 used for the construction of the concrete soil interstitial part 4 is made of polystyrene foam, and has a peripheral wall part 5 having a predetermined height as shown in FIG. 2, and the upper surface side of the peripheral wall part 5 is An overhang portion 6 that is opened and projects inwardly from the peripheral wall portion 5 is integrally provided on the bottom side of the peripheral wall portion 5.
[0016]
The earth retaining material 2 includes one kind of corner part 7 as shown in FIG. 2 (b) and one kind of general part 8 as shown in FIGS. 2 (c-1) and (c-2). It is made using and. The corner portion accessory 7 has a rising wall portion 7a having an angle shape in plan view, and has a protruding portion 7b projecting inwardly from the wall portion 7a on the bottom side. The rising wall portion 8a has a linear shape in plan view, and includes a protruding portion 8b projecting inwardly from the wall portion 8a on the bottom side.
[0017]
The corner portion accessory 7 is provided with connecting projections 7c and 7c at one end, and the other end is provided with connecting recesses 7d and 7d. 8 is also provided with connecting projections 8c and 8c at one end and connecting recesses 8d and 8d at the other end. The earth retaining material 2 as shown in FIG. 2 (a) can be formed by connecting them together.
[0018]
The earth retaining material 2 shown in FIG. 2 (a) has a case where two general parts 8 and 8 are interposed between the corner parts 7 at the four corners, but one general part. A small-sized earth retaining material can be obtained by interposing an object, and a plan view can be obtained by interposing a general part, one sheet on one side and two on the other side. It can also be configured as a rectangular earth retaining material.
[0019]
In the earth retaining material 2 described above, a rising edge 6a is provided at the tip of the bottom-side overhanging portion 6 so as to prevent the overhanging portion 6 from being caught downward by the filling soil.
[0020]
Further, a groove 5a is provided in the top surface portion of the peripheral wall portion 5, and a bar material 9 made of plywood or the like is installed in the groove 5a so that the peripheral wall portion 5 is prevented from being caught outward by the filling soil. In addition, as shown in FIG. 2 (a), by installing the bar material 9 so as to pass between adjacent actors, it is possible to further reduce the interference of the peripheral wall portion 5 due to the filling soil. Not limited to this, the bar material 9 may be installed for each accessory. Also, the bar material 9 may be set in a fixed state by bonding or the like so as to be integrated with the accessory.
[0021]
Construction should be done as follows. That is, as shown in FIGS. 3A and 3B, the earth retaining material 2 is installed on the center side of the ground 10 in the mold 15.
[0022]
Next, as shown in FIGS. 4 (c-1) and (c-2), the soil retaining material 2 is filled with soil 3. If there is soil left, soil 3 should be used. By this filling, the soil 3 is also filled in the upper part of the overhanging portion 6 inside the earth retaining material 2, whereby the earth retaining material 2 receives the weight of the filling earth 3 and is fixed to the ground 10 side. The soil 3 is preferably filled by pressing from above so that the soil retaining material 2 is compressed. Due to the restricting action of the bar 9 and the rising edge 6a, the earth retaining material 2 is not greatly affected.
[0023]
After that, after arranging the bars as necessary, as shown in FIG. 4 (d), the concrete 25 may be driven between the foundations 1 and 1, and the concrete 25 may be cured and cured. Since the earth retaining material 2 receives the weight of the filling soil 3 in the overhanging portion 6 as described above, it does not rise when the concrete 25 is driven. In this way, as shown in FIG. 1, the concrete foundation part 1 and the concrete soil part 4 are constructed integrally at the same time.
[0024]
As described above, according to the construction method described above, the lightweight earth retaining material 2 such as foamed polystyrene is used as the embedding material in the concrete 25, and the soil retaining material 2 is simply filled with soil. Since the lifting of the earth retaining material 2 at the time of driving 25 can be prevented, the lifting of the earth retaining material 2 can be easily prevented without taking any special measures, and the construction of the concrete soil part in the entrance porch is easy. Can be done.
[0025]
Moreover, since the soil retaining material 2 is filled with the soil 3, the concrete soil 4 can be supported by the filled soil 3 from below, whereby the amount of the concrete 25 to be driven can be reduced. It is also possible to reduce the amount of bar arrangement or omit the bar arrangement. In addition, as described above, the amount of remaining soil can be reduced by using the remaining soil at the time of construction as the filling soil 3.
[0026]
Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, as the earth retaining material, the earth retaining material 2 that is divided into the corner part actors 7... And the general part actors 8. In this case, the upper end of the peripheral wall is opened, and a single earth retaining material provided with an inward projecting portion on the bottom side may be used. A closed box-shaped earth retaining material may be used, or an earth retaining material such as cardboard may be used in addition to the foam retaining material 2 made of styrene foam. Needless to say, the term “light weight” in “lightweight earth retaining material” refers to a weight that, by itself, causes a lift in concrete. Further, the concrete inter-soil portion is not limited to that in the entrance porch, and the present invention can be widely applied in various places. Moreover, in said embodiment, although the case where the earth retaining material 2 is used for the method of constructing | assembling the concrete foundation part 1 and the soil part 4 simultaneously is shown, it is not restricted to this, Concrete Needless to say, it can be widely used in various cases where the amount of driving is to be reduced.
[0027]
【The invention's effect】
Since the present invention is as described above, the construction between the concrete soils in the entrance porch or the like can be easily performed, the amount of reinforcing bars can be reduced, and the amount of concrete can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a concrete soil portion in an entrance porch constructed by the method of an embodiment.
[Fig. 2] Fig. 2 shows an earth retaining material. Fig. (A) is an overall perspective view, Fig. (B) is a perspective view of a corner part, and Figs. FIG.
FIGS. 3A and 3B are cross-sectional views sequentially showing a construction method together with FIG.
4 is a cross-sectional view sequentially illustrating a construction method together with FIG. 3; FIG.
FIG. 5 is a perspective view showing a conventional structure.
[Explanation of symbols]
2 ... Earth retaining material 3 ... Soil 4 ... Concrete soil part 5 ... Peripheral wall part 6 ... Overhang part 7 ... Corner part role 8 ... General part role 25 ... Implanted concrete

Claims (3)

An annular peripheral wall portion having a predetermined height is provided, and an upper surface side of the annular peripheral wall portion is opened, and a projecting portion projecting inwardly from the annular peripheral wall is integrally provided on the bottom side of the peripheral wall portion. Using a lightweight earth retaining material such as styrofoam provided with a rising edge that prevents it from being held down by the filled soil at the tip of the
After installing the earth retaining material, the earth is filled in the annular peripheral wall of the earth retaining material, and then concrete is placed so that the earth retaining material and the soil are embedded. Construction method of concrete soil part in entrance porch. The earth retaining material is
The rising wall portion has an angled shape in plan view, and a corner portion with an overhanging portion projecting inward from the rising wall portion on the bottom side;
The rising wall has a straight line shape in plan view, and has a general part with an overhanging part protruding inward from the rising wall on the bottom side,
The construction of the concrete soil part in the entrance porch or the like according to claim 1, wherein the corner parts at the four corners are connected directly or via general parts to form an annular peripheral wall part. Method. The method for constructing a concrete soil portion in an entrance porch or the like according to claim 2, wherein the earth retaining material is composed of one kind of corner part and one kind of general part .

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