Earthen floor concrete support structure

Abstract

To reduce the amount of soil placed on the base of strip footing foundation.SOLUTION: An earthen floor concrete support structure 100 includes a strip footing foundation 101 that has a base portion 102 and a rising portion 103, a first tubular portion 10 that is positioned on the base portion 102 and forms a cavity C inside, backfill soil 104 that is backfilled in the space surrounded with the strip footing foundation 101, and earthen floor concrete 110 cast on top of the backfill soil 104.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a dirt floor concrete support structure.

Background Art

[0002] There is known a support structure for dirt floor concrete placed on top of backfill soil filled within an area surrounded by an inverted T-shaped fabric foundation composed of a rising portion and a base portion. In this support structure, a pipe is arranged on the base portion inside the fabric foundation, steel bars are inserted into the pipe, and concrete is placed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the height of the soil placed on the base portion of the fabric foundation increases, it is necessary to widen the base portion, leading to an increase in cost.

[0005] An object of the present invention is to provide a dirt floor concrete support structure capable of reducing the amount of soil placed on the base portion of the fabric foundation.

Means for Solving the Problems

[0006] One aspect of the dirt floor concrete support structure according to the present invention is a fabric foundation having a base portion and a rising portion, a first cylindrical portion arranged on the base portion and forming a cavity inside, backfill soil filled within the space surrounded by the fabric foundation, and dirt floor concrete placed on the backfill soil, and is characterized by comprising these.

[0007] According to this aspect, a first cylindrical portion is disposed on the base portion, and a cavity is formed in the first cylindrical portion, so that backfill soil is not disposed in the region where the first cylindrical portion is disposed. According to such a ground concrete support structure, a cavity in which backfill soil is not disposed is formed on the base portion, so that the amount of soil placed on the base portion can be reduced.

[0008] Also, in another aspect of the present invention, the axial direction of the first cylindrical portion is arranged along the vertical direction, and an upper opening of the first cylindrical portion is closed.

[0009] According to this aspect, since the upper opening of the first cylindrical portion is closed, ground concrete can be disposed on the opening of the first cylindrical portion. Further, intrusion of backfill soil into the inside of the first cylindrical portion can be suppressed.

[0010] Also, in another aspect of the present invention, a plurality of second cylindrical portions are provided which are disposed on the base portion and in which concrete is placed, and the first cylindrical portion is disposed between the plurality of second cylindrical portions in the direction in which the fabric foundation extends.

[0011] According to this aspect, by placing concrete inside the second cylindrical portion, the ground concrete can be supported by the concrete placed inside the second cylindrical portion.

[0012] Also, in another aspect of the present invention, a plurality of the first cylindrical portions are disposed between the plurality of second cylindrical portions in the direction in which the fabric foundation extends.

[0013] According to this aspect, a plurality of first cylindrical portions each having a cavity formed therein can be disposed between a plurality of second cylindrical portions in which concrete is placed.

[0014] Also, in another aspect of the present invention, The axial direction of the first cylindrical portion is arranged along the direction in which the fabric base extends.

[0015] According to this aspect, the first cylindrical portion can be arranged horizontally along the direction in which the fabric base extends.

[0016] In another aspect of the present invention, The first cylindrical portion is characterized by being a cylinder or a square cylinder.

[0017] In this aspect, a cylinder or a square cylinder with high versatility can be used as the first cylindrical portion.

Effect of the Invention

[0018] As can be understood from the above description, according to the present invention, it is possible to provide a soil-concrete support structure capable of reducing the amount of soil placed on the base portion of the fabric base, and a construction method of the soil-concrete support structure.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0020] Hereinafter, the dirt-concrete support structure according to the embodiment will be described with reference to the accompanying drawings. In the present specification and drawings, substantially the same components may be denoted by the same reference numerals, and redundant descriptions may be omitted.

[0021] [Dirt-Concrete Support Structure 100 According to the First Embodiment] FIG. 1 is a perspective view showing the fabric foundation 101, the first cylindrical portion 10, and the second cylindrical portion 20 of the dirt-concrete support structure 100 according to the first embodiment. FIG. 2 is a perspective view showing the fabric foundation 101, the first cylindrical portion 10, the second cylindrical portion 20, and the backfill soil 104 of the dirt-concrete support structure 100 according to the first embodiment. FIG. 3 is a cross-sectional view of the dirt-concrete support structure 100 according to the first embodiment. FIG. 4 is a cross-sectional view of the dirt-concrete support structure 100 according to the first embodiment. In FIGS. 1 to 4, arrows indicating the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other are illustrated. The X-axis direction and the Y-axis direction are along the horizontal direction. The Z-axis direction is along the vertical direction.

[0022] As shown in FIGS. 3 and 4, the dirt-concrete support structure 100 includes a fabric foundation 101, a first cylindrical portion 10, a second cylindrical portion 20, a lid 30, backfill soil 104, and dirt-concrete 110. In FIG. 1, the state before the lid 30, the backfill soil 104, and the dirt-concrete 110 are constructed is illustrated. In FIG. 2, the state before the dirt-concrete 110 is constructed is illustrated.

[0023] [Fabric Foundation 101] As shown in FIG. 3, the fabric foundation 101 is constructed on the crushed stone 105. The fabric foundation 101 has a base portion 102 and a rising portion 103. The rising portion 103 stands perpendicular to the ground surface. The upper end portion of the rising portion 103 supports the building. The base portion 102 is connected to the lower end portion of the rising portion 103 and supports the rising portion 103. The base portion 102 projects in the width direction of the rising portion 103. The base portion 102 transmits the load of the building to the ground surface via the crushed stone 105.

[0024] [First Cylindrical Portion 10] The first cylindrical portion 10 shown in FIGS. 1 to 3 is disposed on the upper surface 102a of the base portion 102. The upper surface 102a is continuous in the longitudinal direction of the base portion 102 and is formed so as to project in the width direction of the rising portion 103. When the longitudinal direction of the base portion 102 is along the Y-axis direction, the width direction of the rising portion 103 is along the X-axis direction.

[0025] The first cylindrical portion 10 is, for example, a vinyl chloride pipe (VU pipe) having a cylindrical shape. The axial direction of the first cylindrical portion 10 is along the vertical direction. The inner diameter of the first cylindrical portion 10 may be, for example, 150 mm. The inner diameter of the first cylindrical portion 10 is smaller than the width of the upper surface 102a. The width of the upper surface 102a is the width along the X-axis direction when the rising portion 103 extends in the Y-axis direction.

[0026] A cavity C is formed inside the first cylindrical portion 10. As shown in FIG. 3, the opening at the lower end of the first cylindrical portion 10 is covered from below by the upper surface 102a of the base portion 102. The opening at the upper end of the first cylindrical portion 10 is covered by the lid 30. The lid 30 has a disk shape and closes the opening of the first cylindrical portion 10.

[0027] Since the opening at the upper end of the first cylindrical portion 10 is closed by the lid 30, the intrusion of the backfill soil 104 and the concrete 113 into the first cylindrical portion 10 is suppressed.

[0028] [Second cylindrical portion 20] The second cylindrical portion 20 shown in FIGS. 1, 2, and 4 is disposed on the upper surface 102a of the base portion 102. The second cylindrical portion 20 is, for example, a vinyl chloride pipe (VU pipe) having a cylindrical shape. The axial direction of the second cylindrical portion 20 is along the vertical direction. The inner diameter of the second cylindrical portion 20 may be, for example, 150 mm. The inner diameter of the second cylindrical portion 20 is smaller than the width of the upper surface 102a. The second cylindrical portion 20 may be a cylindrical body having the same structure as the first cylindrical portion 10. A cavity C is formed inside the first cylindrical portion 10, and concrete is placed inside the second cylindrical portion 20. A support 115 made of reinforced concrete is formed inside the second cylindrical portion 20.

[0029] As shown in FIG. 4, a support reinforcing bar 116 is inserted inside the second cylindrical portion 20. The support reinforcing bar 116 is an L-shaped reinforcing bar, and the vertical portion of the support reinforcing bar 116 extends in the Z-axis direction. The horizontal portion of the support reinforcing bar 116 extends, for example, in the X-axis direction and is fastened to the ground concrete reinforcing bar 111.

[0030] [Backfill soil 104] As shown in FIGS. 2 to 4, the backfill soil 104 is backfilled into the space surrounded by the fabric foundation 101 after the construction of the fabric foundation 101. The backfill soil 104 is arranged on the inner side of the building in plan view. The backfill soil 104 is compacted, for example, by a compactor. The height of the backfill soil 104 after compaction is, for example, the same as the upper ends of the first cylindrical portion 10 and the second cylindrical portion 20.

[0031] [Ground concrete 110] The ground concrete 110 is placed so as to cover the backfill soil 104, the first cylindrical portion 10, and the second cylindrical portion 20. The ground concrete 110 is also called a concrete slab. The ground concrete 110 is made of reinforced concrete. The ground concrete 110 has a ground concrete reinforcing bar 111 and concrete 113.

[0032] The ground concrete reinforcing bar 111 is assembled in a grid pattern on the backfill soil 104. The ground concrete reinforcing bar 111 is arranged on spacers. The ground concrete reinforcing bar 111 is arranged inside the concrete 113 for the reinforcement of the ground concrete 110. As described above, the support reinforcing bar 116 is fastened to the ground concrete reinforcing bar 111. The concrete 113 is placed on the backfill soil 104. A part of the concrete is placed inside the second cylindrical portion 20 as described above. The support 115 inside the second cylindrical portion 20 supports the ground concrete 110.

[0033] [Operation and effect of the ground concrete support structure 100 according to the first embodiment] The earthen concrete support structure 100 according to the first embodiment includes a fabric foundation 101 having a base portion 102 and a rising portion 103, a first cylindrical portion 10 disposed on the base portion 102 and forming a cavity inside, a backfill soil 104 backfilled in the space surrounded by the fabric foundation 101, and an earthen concrete 110 placed on the backfill soil 104.

[0034] According to such an earthen concrete support structure 100, since the first cylindrical portion 10 is disposed on the base portion 102 and a cavity C is formed in the first cylindrical portion 10, the backfill soil 104 is not disposed in the region where the first cylindrical portion 10 is disposed. According to such an earthen concrete support structure 100, since a cavity C in which the backfill soil 104 is not disposed is formed on the base portion 102, the amount of soil placed on the base portion 102 can be reduced. In the earthen concrete support structure 100, the load acting on the base portion 102 can be suppressed. Thereby, the expansion of the width of the base portion 102 can be suppressed.

[0035] In the earthen concrete support structure 100, the axial direction of the first cylindrical portion 10 is arranged along the Z-axis direction (vertical direction), and the upper opening of the first cylindrical portion 10 is closed. The upper opening of the first cylindrical portion 10 is covered by a lid 30.

[0036] According to the earthen concrete support structure 100 having this configuration, since the upper opening of the first cylindrical portion 10 is closed, the earthen concrete 110 can be disposed on the opening of the first cylindrical portion 10. Further, the intrusion of the backfill soil 104 into the inside of the first cylindrical portion 10 can be suppressed.

[0037] The earthen concrete support structure 100 includes a plurality of second cylindrical portions 20 disposed on the base portion 102 and having concrete placed inside, and the first cylindrical portion 10 is disposed between the plurality of second cylindrical portions 20 in the direction in which the fabric foundation 101 extends.

[0038] According to the dirt-floor concrete support structure 100 of this configuration, by placing concrete inside the second cylindrical portion 20, the dirt-floor concrete 110 can be supported by the concrete placed inside the second cylindrical portion 20.

[0039] Further, in the dirt-floor concrete support structure 100, in the direction in which the fabric foundation 101 extends, a plurality of first cylindrical portions 10 are arranged between the plurality of second cylindrical portions 20. According to the dirt-floor concrete support structure 100 of this configuration, a plurality of first cylindrical portions 10 that form a cavity C inside can be arranged between the plurality of second cylindrical portions 20 into which concrete is placed inside.

[0040] Also, in the dirt-floor concrete support structure 100, the first cylindrical portion 10 is a cylinder. In the dirt-floor concrete support structure 100 of this configuration, a highly versatile cylinder can be used as the first cylindrical portion 10. Thereby, in the dirt-floor concrete support structure 100, an increase in manufacturing cost can be suppressed.

[0041] [Dirt-floor Concrete Support Structure 100B According to the Second Embodiment] Next, the dirt-floor concrete support structure 100B according to the second embodiment will be described. FIG. 5 is a perspective view showing the fabric foundation 101, the first cylindrical portion 10, and the second cylindrical portion 20 of the dirt-floor concrete support structure 100B according to the second embodiment. The difference between the dirt-floor concrete support structure 100 according to the second embodiment and the dirt-floor concrete support structure 100 according to the first embodiment is that it includes first and second cylindrical portions 10 and 20 that are longer than the first and second cylindrical portions 10 of the dirt-floor concrete support structure 100. In the description of the second embodiment, the same description as in the description of the first embodiment above will be omitted.

[0042] In the second embodiment, the lengths of the first cylindrical portion 10 and the second cylindrical portion 20 along the Z-axis direction may be slightly shorter than the length of the rising portion 103 in the Z-axis direction. For example, the lengths of the first cylindrical portion 10 and the second cylindrical portion 20 along the Z-axis direction may be 50% or more and 90% or less of the length of the rising portion 103.

[0043] In the dirt floor concrete support structure 100B, a plurality of first cylindrical portions 10 are arranged among a plurality of second cylindrical portions 20 arranged in the longitudinal direction of the fabric foundation 101. The dirt floor concrete support structure 100B may include two to three first cylindrical portions 10 for one second cylindrical portion 20. Further, a second cylindrical portion 20 may be arranged at a corner where a fabric foundation 101 extending in the Y-axis direction and a fabric foundation 101 extending in the X-axis direction intersect.

[0044] Also in the dirt floor concrete support structure 100B according to such a second embodiment, the same operational effects as those of the dirt floor concrete support structure 100 according to the above-described first embodiment are exhibited. In the dirt floor concrete support structure 100B, the ratio of the installation quantity of the first cylindrical portion 10 with respect to the second cylindrical portion 20 can be appropriately changed. By increasing the installation quantity of the first cylindrical portion 10, the amount of soil placed on the base portion 102 can be reduced. Further, in the dirt floor concrete support structure 100B, even if backfill soil 104 is constructed to a higher position compared to normal, the load applied to the base portion 102 can be suppressed.

[0045] [Dirt Floor Concrete Support Structure 100 According to the First Modification Example] Next, the dirt floor concrete support structure 100 according to the first modification example will be described. In the dirt floor concrete support structure 100, the direction in which the axis of the first cylindrical portion 10 extends is not limited to the vertical direction. The axial direction of the first cylindrical portion 10 may be arranged along the direction in which the fabric foundation 101 extends.

[0046] In the dirt floor concrete support structure 100, for example, the first cylindrical portion 10 may be arranged among a plurality of second cylindrical portions 20 along the direction in which the fabric foundation 101 extends. For example, when the base portion 102 is formed along the Y-axis direction, a first cylindrical portion 10 whose axial direction is along the Y-axis direction may be arranged between a pair of second cylindrical portions 20 arranged apart in the Y-axis direction.

[0047] [Dirt Floor Concrete Support Structure 100 According to the Second Modification Example] Next, the ground concrete support structure 100 according to the second modification will be described. In the ground concrete support structure 100, the first cylindrical portion 10 is not limited to a cylinder and may be a square cylinder. Similarly, in the ground concrete support structure 100, the second cylindrical portion 20 is not limited to a cylinder and may be a square cylinder. For example, in a box-shaped square cylinder, the inside may be partitioned into a plurality of spaces by a plurality of walls. The square cylinder may be a square pipe. Also, the axial direction of the square cylinder may be arranged along the direction in which the cloth foundation 101 extends.

[0048] In the ground concrete support structure 100, the axial direction of the first cylindrical portion 10 and the axial direction of the second cylindrical portion 20 may be the same or different. In the ground concrete support structure 100, the length in the axial direction of the first cylindrical portion 10 may be the same as or different from the length in the axial direction of the second cylindrical portion 20. Also, in the ground concrete support structure 100, the inner diameter of the first cylindrical portion 10 may be the same as or different from the inner diameter of the ground concrete support structure 100.

[0049] In addition, other embodiments in which other components are combined with the configurations and the like described in the above embodiments may be possible, and the present invention is not limited to the configurations shown here at all. In this regard, it is possible to make changes without departing from the spirit of the present invention, and it can be appropriately determined according to the application form.

Explanation of Reference Numerals

[0050] 100, 100B: Ground concrete support structure 10: First cylindrical portion 20: Second cylindrical portion 30: Lid 101: Cloth foundation 102: Base portion 103: Upright portion 104: Backfill soil 110: Ground concrete C: Cavity X: X-axis direction (horizontal direction) Y: Y-axis direction (horizontal direction) Z: Z-axis direction (vertical direction)

Claims

1. A fabric foundation having a base portion and a rising portion, A first cylindrical portion disposed on the base portion and forming a cavity inside, Backfill soil backfilled into the space surrounded by the fabric foundation, A dirt floor concrete cast on the backfill soil, characterized by a dirt floor concrete support structure comprising the same.

2. The axial direction of the first cylindrical portion is arranged along the vertical direction, The dirt floor concrete support structure according to claim 1, characterized in that the upper opening of the first cylindrical portion is closed.

3. Comprising a plurality of second cylindrical portions disposed on the base portion and having concrete cast therein, The dirt floor concrete support structure according to claim 1, characterized in that the first cylindrical portion is disposed between the plurality of second cylindrical portions in the direction in which the fabric foundation extends.

4. The dirt floor concrete support structure according to claim 3, characterized in that a plurality of the first cylindrical portions are disposed between the plurality of second cylindrical portions in the direction in which the fabric foundation extends.

5. The dirt floor concrete support structure according to claim 1, characterized in that the axial direction of the first cylindrical portion is arranged along the direction in which the fabric foundation extends.

6. The dirt floor concrete support structure according to claim 1 or 2, characterized in that the first cylindrical portion is a cylinder or a square cylinder.

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