JP5284749B2 - Dust concrete support structure and construction method - Google Patents

Description

  The present invention relates to a soil concrete support structure and a construction method thereof.

  For the purpose of moisture-proofing under the floor of a building, it is common to place interstitial concrete on top of backfilled soil that is backfilled on the inner side surrounded by an inverted T-shaped fabric foundation consisting of a rising part and a base part Has been done.

  In addition, the soil concrete is used as a base part that supports a bundle that supports the large pulling of the first floor.

JP 2003-253856 A

  However, even if the backfilled soil is fully compacted and solidified prior to the construction of the soil concrete, the soil concrete will be affected by the load transmitted from the bundle that supports the subsidence or large pulling of the ground due to insufficient rolling pressure or creep over time. Also sunk. The subsidence of the soil concrete caused a drop in the level of bundles and pulling, and as a result, the first floor was uneven.

  In particular, when the soil concrete is a base that supports the bundle that supports the large pull, when the soil concrete sinks, it is necessary for a person to enter the floor and adjust the height of the bundle.

  This invention makes it a subject to provide the support structure which does not sink soil concrete, and its construction method in view of the above problems.

  The above-mentioned problem is a support structure for interstitial concrete that is placed on top of backfill soil that is backfilled on the inner side surrounded by an inverted T-shaped fabric foundation composed of a rising part and a base part. The support for supporting concrete is solved by a soil concrete support structure characterized in that the base portion of the fabric foundation is disposed as a support portion.

  In this interstitial concrete support structure, the support body that supports the interstitial concrete is disposed with the base portion of the cloth foundation as the support portion, and the support body that receives the load of the interstitial concrete uses the base portion of the cloth foundation as the support portion. Therefore, it is possible to prevent the soil concrete from sinking due to a load transmitted from a bundle supporting the large pull.

  The soil concrete support structure may be made of concrete in which the soil concrete and the support are integrated.

  Because the soil concrete and the support are made of integrated concrete, there is no need to prepare a separate support during construction, and the soil concrete and the support can be installed at the same time when placing the soil concrete. Can be achieved. In addition, since the support and the soil concrete are integrated, the support of the soil concrete by the support can be stably and reliably performed.

  Further, it is preferable that a reinforcing bar for supporting body reinforcement is arranged on the support, a reinforcing steel rod for reinforcing concrete between the soil is arranged on the soil concrete, and the reinforcing steel for reinforcing the support body and the reinforcing steel for reinforcing the soil concrete are tightly connected.

  Reinforcing bars for reinforcing the support are placed on the support body, and interstitial concrete reinforcing steel bars are placed on and tightly connected to the concrete between the soil. Concrete can be supported stably and reliably.

  Also, it is a soil concrete support structure, which is a soil concrete support structure placed on top of the backfill soil that is backfilled on the inner side surrounded by an inverted T-shaped fabric foundation consisting of a rising part and a base part. In addition, a base provided on the inner side surrounded by the cloth foundation may be disposed as a support portion, which supports the soil concrete.

  Since the support that supports the concrete between the foundations is provided as a support provided on the inner side surrounded by the cloth foundation, the support is placed at the place where the support is provided. Therefore, the support is not limited to the position where the base portion of the fabric foundation is located, and the support can be disposed at a structurally appropriate place for supporting the soil concrete.

In addition, the above-described problem is a process of constructing an inverted T-shaped fabric foundation including a rising portion and a base portion,
Placing a tube with a removable lid at one end with the end with the lid up on the inner base surrounded by the fabric foundation;
Backfilling the backfilling soil on the inner side surrounded by the fabric foundation;
Rolling the backfill soil;
Removing the lid attached to the tube;
A process of laying down the soil concrete reinforcement,
Inserting one side of the L-shaped bars into the tube and binding the other side to the soil concrete reinforcement;
Placing concrete and covering the space between the pipe and soil with concrete;
It can also be solved by a method for constructing a soil concrete support structure characterized by comprising the following.

  Since this invention is as above, the support structure which does not sink soil concrete, and its construction method can be provided.

  Next, the best mode for carrying out the present invention will be described with reference to the drawings.

  In the soil concrete support structure 1 of the first embodiment shown in FIG. 1, 2 is a cloth foundation, 3 is crushed stone, 4 is backfill soil, 5 is a support, 6 is a pipe, 7 is soil concrete, and 8 is support reinforcement. Reinforcing bar, 9 is a soil concrete reinforcing bar.

  The fabric foundation 2 to be constructed on the crushed stone 3 has a rising portion 2a that stands upright with respect to the ground surface and an upper end portion that supports the building, and a rising portion 2a that is located on the lower end side of the rising portion 2a and supports the rising portion 2a. It consists of the base part 2b which conveys to the ground surface via the crushed stone 3. On the inside of the building, there are backfill soil 4 to be backfilled after the construction of the fabric foundation 2 and soil concrete 7 to be placed on top of the backfill soil 4. In addition, 10 is a bundle which supports the large drawing arrange | positioned on soil concrete. Reference numeral 8 denotes an L-type reinforcing bar disposed inside the support 5 and the interstitial concrete 7 to reinforce the support 5 and to integrate the support 5 and the interstitial concrete 7, and 9 is a reinforcement of the interstitial concrete 7. For this reason, the reinforcing bars arranged inside the interstitial concrete 7 are well-shaped reinforcing bars, and the L-type reinforcing bars 8 and the reinforcing bars 9 are tightly connected.

  The support 5 that supports the soil concrete is arranged with the upper end surface of the base portion 2a of the fabric foundation 2 as a support portion, and supports the building load transmitted through the bundle 10 and the soil concrete 7.

  The construction of the support structure is performed as follows. As shown in FIG. 2, at the stage where the fabric foundation 2 is constructed, the tube 6 with the removable lid 6a on the inner base portion 2b surrounded by the fabric foundation 2 is connected to the end with the lid 6a. Place them at regular intervals with the part up.

  Here, the pipe 6 is a cylindrical pipe made of, for example, a VU pipe having a diameter of 150 mm as shown in FIG. 7, and the height dimension is from the upper end of the base portion 2a of the fabric foundation 2 as shown in FIG. 7 to the lower end. A removable cover 6 a is attached to one side of the tube 6. The central projection 6b is used when the lid 6 is removed. Reference numeral 6 c denotes an engaging portion for positioning for fitting the lid 6 a to the tube 6.

  After the pipe 6 is placed, as shown in FIG. 3, the backfill soil 4 is backfilled on the inner side surrounded by the fabric foundation 2, and the backfill soil is sufficiently leveled up to the same level as the upper end of the pipe 6 with a compactor or the like. Compress.

  After completion of the rolling, the lid 6a is removed from the tube 6 as shown in FIG. What is necessary is just to utilize the projection part 6b of the lid | cover 6a as a handle at the time of removing, when removing with the lid | cover 6a.

  Next, as shown in FIG. 5, a well-shaped reinforcing bar 9 is arranged on the backfilling soil 4, and one side of the L-shaped hand metal is inserted into the pipe 6, and the other side is backfilled. Tightened with reinforcing steel bars 9 arranged on the soil 4.

  Then, as shown in FIG. 6, the concrete 7 is placed inside the pipe 6 and on the backfill soil 4 to form an integral concrete structure that covers the inside of the pipe 6 and the backfill soil 4.

  In this interstitial concrete support structure, the support body that supports the interstitial concrete is disposed with the base portion of the cloth foundation as the support portion, and the support body that receives the load of the interstitial concrete uses the base portion of the cloth foundation as the support portion. Therefore, it is possible to prevent the soil concrete from sinking due to a load transmitted from a bundle supporting the large pull.

  In addition, because the soil concrete and the support are made of integrated concrete, there is no need to separate the support during construction, and the soil concrete and the support can be constructed simultaneously when placing the soil concrete, saving labor in construction. Can be achieved. In addition, since the support and the soil concrete are integrated, the support of the soil concrete by the support can be stably and reliably performed.

  Since the support reinforcing bars are arranged on the support, and the soil concrete reinforcing reinforcing bars are arranged and tightly connected to the soil concrete, the support and the soil concrete are reinforced by the reinforcing bars, and the support is more integrated. It is possible to stably and reliably support the soil concrete.

  In the second embodiment of the present invention shown in FIG. 7, the support 5 is not only arranged with the upper end surface of the base portion 2 a of the fabric foundation 2 as a support portion, but also on the inner side surrounded by the fabric foundation 2. The bases 11, 11... Provided separately from 2 are arranged as support parts.

  Since the support that supports the concrete between the foundations is provided as a support provided on the inner side surrounded by the cloth foundation, the support is placed at the place where the support is provided. Therefore, the support is not limited to the position where the base portion of the fabric foundation is located, and the support can be disposed at a structurally appropriate place for supporting the soil concrete.

  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 embodiment, the support has been shown in which a pipe is disposed on the base portion of the cloth foundation, the support is integrally formed with the soil concrete, and the support supports the soil concrete. The concrete does not need to be integral, and a support that supports the soil concrete may be provided separately. In this case, it is only necessary to place a support prepared in advance on the base portion of the fabric foundation, backfill the backfill soil, and then place soil concrete.

  In the above embodiment, the case where the support is formed by using a cylindrical tube is shown. However, the tube to be used does not have to be a cylindrical shape, and a low-end tube with one end closed. Needless to say, it may be. In addition, the specific shape of the tube is not limited, and in short, it may function as a mold for forming the support, and may be in any form that is required to form the shape required for the support. It may be a body, may be a cylinder with a triangular cross section, and the form may be different depending on the cross section.

It is a front view which shows the dirt concrete support structure of 1st Embodiment. It is explanatory drawing which shows the construction condition of a soil concrete structure with FIGS. It is explanatory drawing which shows the construction condition of a soil-concrete concrete structure with FIG. It is explanatory drawing which shows the construction condition of a soil concrete structure with FIG. It is explanatory drawing which shows the construction condition of a soil concrete structure with FIGS. It is explanatory drawing which shows the construction condition of soil concrete structure with FIGS. The figure (b) is a tube, the figure (b) is a lid attached to the pipe, and the figure (c) is a perspective view showing a situation where the lid is attached to the pipe. It is a front view which shows the dirt concrete support structure of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Interstitial concrete support structure 2 ... Cloth foundation 2a ... Rising part 2b ... Base part 3 ... Crushed stone 4 ... Backfill soil 5 ... Support body 6 ... Pipe 7 ... concrete concrete 8 ... support reinforcing steel bars 9 ... concrete concrete reinforcing steel bars 10 ... bundle 11 ... base

Claims (5)

A structure for supporting concrete between soils placed on top of backfilled soil backfilled on the inner side surrounded by an inverted T-shaped fabric foundation consisting of a rising part and a base part,
A support structure for supporting concrete between soil is provided with a base portion of the cloth foundation as a support portion.   The soil-concrete support structure according to claim 1, wherein the soil-concrete and the support are made of integrated concrete. Support reinforcement bars are arranged on the support,
Reinforcing concrete reinforcement bars are arranged in the dirt concrete,
3. The soil concrete support structure according to claim 2, wherein the support reinforcing steel reinforcing bars and the soil concrete reinforcing steel bars are tightly coupled. A structure for supporting concrete between soils placed on top of backfilled soil backfilled on the inner side surrounded by an inverted T-shaped fabric foundation consisting of a rising part and a base part,
A soil-concrete support structure characterized in that a support body that supports soil-concrete is arranged with a base provided on the inner side surrounded by the cloth foundation as a support part. A process of constructing an inverted T-shaped fabric foundation composed of a rising portion and a base portion;
Placing a tube with a removable lid at one end with the end with the lid up on the inner base surrounded by the fabric foundation;
Backfilling the backfilling soil on the inner side surrounded by the fabric foundation;
Rolling the backfill soil;
Removing the lid attached to the tube;
A process of laying down the soil concrete reinforcement,
Inserting one side of the L-shaped rebar into the tube and binding the other side to the soil concrete reinforcement;
Placing concrete and covering the space between the pipe and soil with concrete;
A method for constructing a soil concrete support structure characterized by comprising:

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