JP3727320B2 - Ground reinforcement, foundation structure and foundation structure construction method - Google Patents

Description

  The present invention relates to the prevention of uneven settlement of the ground, and in particular, a ground reinforcement body, a foundation structure, and a foundation structure capable of preventing the uneven settlement of the foundation and the consolidation settlement of the foundation foundation board, which are biased by the load of the structure. It relates to the construction method of the foundation structure.

  Conventionally, there is a problem of uneven settlement and consolidation settlement caused by uneven loads of structures such as tombstones and stone monuments. In addition, there is a problem that the structure itself tilts or falls due to the uneven settlement and consolidation settlement.

  On the other hand, when constructing a structure including a tombstone, a foundation is constructed in order to disperse the load applied to the ground by the structure, thereby achieving some degree of uniform settlement. However, when the load of the structure is biased to the foundation surface and the foundation ground, or when soft ground exists under the foundation, even if a foundation is provided, uneven settlement and consolidation settlement may occur. On the other hand, as a technique for preventing uneven settlement of general structures, by replacing part of the foundation foundation board with drainage material, non-uniformity caused by moisture in the ground is prevented, and at the same time a lightweight foundation structure There has been proposed a ground replacement technique for providing a surface (for example, Patent Document 1).

  Moreover, as a technique for preventing the fall of structures such as tombstones, grave markers and the like that have improved the earthquake resistance of the tombstones by passing through supporting bolts through the laminated tombstones have been proposed (for example, Patent Document 2 and Patent Document 3). .

Japanese Patent Laid-Open No. 9-273160 JP-A-64-33372 JP-A-9-209610

  However, a structure represented by a tombstone having a graveyard structure has a unique property that is not found in a general structure, and this unique property also induces uneven settlement and consolidation settlement. That is, the structure of the grave is generally a structure in which the front part is provided with stairs and paving stones, or no structure is placed on the upper surface of the grave foundation, while the gravestone is provided at the back part. The tombstone load greatly deviates from the center of the grave foundation surface and is biased toward the upper part of the upper surface of the grave foundation and the base part of the rear part of the foundation surface. Furthermore, tombstones are constructed by stacking several stones from several kilograms to several hundred kilograms, and it is not uncommon for the total weight to be several hundred kilograms to several tens of t. In the general grave structure as described above, the load of the gravestone on the foundation surface and foundation foundation is significantly biased, and the weight per fixed area supported by the foundation is very heavy compared to a residential structure. . As a result, in the entire graveyard, subsidence occurs around the foundation of the bottom of the gravestone and the foundation foundation board, while in the front part of the graveyard, subsidence occurs because the influence of the load of the gravestone is small. It is.

  The same can be said of the above-mentioned properties not only in tombstones but also in structures that apply a remarkably biased load on foundations such as stone monuments and foundation foundation boards.

  The technology for preventing the uneven settlement of structures such as the above-mentioned general houses cannot solve the uneven settlement caused by the characteristics peculiar to the grave structure and the like, and is not sufficient as a technique for preventing the uneven settlement of the tombstone.

  Also, even if the above-mentioned tombstone fall prevention technology is used, it is not possible to prevent uneven settlement of foundations and foundation foundations where structures are subjected to uneven loads. May not be able to support its own weight and may break and fall.

  As described above, in a grave where an uneven load of a structure is applied to the foundation and the foundation foundation board, the unsettled settlement and consolidation settlement occur due to the unsettled settlement generation factor and the specific generation factor of the general structure. If there is uneven settlement or consolidation settlement in a grave, etc., the structure itself will be tilted, toppled or damaged, which is very dangerous and the economic problems related to the labor and cost of repairing or replacing stone are serious. is there. The above-mentioned uneven settlement and consolidation settlement and problems arising therefrom tend to be further promoted by the influence of vibrations such as earthquakes or softening of the ground due to poor drainage in the ground.

  In addition, as seen in general graves, structures are constructed very closely adjacent to each other, and there are cases where passages are provided in a very narrow area compared to general roads. Under such circumstances, there is a problem that heavy machinery for construction of the foundation of the structure cannot enter and a construction method that relies on heavy machinery cannot be used.

  Therefore, in order to provide a foundation structure for preventing uneven settlement in the environment as described above, construction is possible without relying on heavy machinery, and a simple construction method is desired.

  The purpose of the present invention is to adjust the uneven load applied to the foundation surface and the ground below it by structures such as tombstones, and to stabilize the ground by absorbing ground vibrations such as earthquakes and so on. The present invention provides a ground reinforcing body for preventing consolidation settlement and a foundation structure having the ground reinforcing body.

  Another object of the present invention is to provide a construction method for the foundation structure that can be constructed without using heavy equipment for construction.

  As a result of earnest research on the above problems, the present inventor has found that the above problems can be solved by a ground reinforcing body having the following configuration.

  That is, the present invention is a ground reinforcing body provided below the base portion, wherein the foamed resin molded body and the concrete molded body are integrally formed, and the foamed resin molded body is formed on a part of the lower surface of the base portion. The ground is characterized in that the upper surface of the base is in contact, the upper surface of the concrete molded body is in contact with the other part of the lower surface of the foundation portion, and the foamed resin molded body and the concrete molded body are in contact at an inclined interface. The gist of the reinforcing body.

  Furthermore, according to the present invention, a foamed resin wall can be disposed on a part or all of the side surface of the ground reinforcing body, and further, the foamed resin wall can have a drainage function.

  Moreover, this invention makes a summary the foundation structure characterized by consisting of the said foundation part and the said ground reinforcement body.

  Furthermore, the present invention includes a step of excavating and forming a hole in a region where the foundation is constructed, a step of embedding a foamed resin molded body in a part of the hole, and placing concrete in the remaining portion of the hole Then, a concrete structure is formed, and subsequently, a foundation structure construction method characterized in that it includes a step of placing concrete for a foundation portion to form a foundation portion.

  The ground reinforcing body of the present invention prevents uneven settlement and consolidation settlement by adjusting the uneven load of the structure on the foundation surface and foundation foundation board. That is, the present invention embeds a foamed resin molded article having a specific gravity lighter than the ground below the foundation where the structure is planned to be placed, and a concrete molded article having a higher specific gravity than the ground below the foundation where the structure is not planned. And further adjusting the bias of the load on the ground located under the ground reinforcing body of the present invention by providing the interface between the foamed resin molded body and the concrete molded body in a slanted shape, and as a result, the grave foundation It prevents consolidation settlement of the ground below, and at the same time, prevents uneven settlement of the foundation.

  Furthermore, since foamed resin is used in the present invention, it has the effect of absorbing the seismic waves of earthquakes and other vibrations to reduce the effects of vibrations on structures such as tombstones or to make them seismic-isolated. It has the effect of preventing the situation where the ground becomes soft due to, etc., causing uneven settlement.

  As described above, as a result of preventing the uneven settlement, it is possible to prevent the structure from being inclined, toppled and damaged. As a result, the safety of structures such as tombstones can be increased, and the labor and cost required for repairing tombstones or exchanging stones can be reduced, resulting in a great economic effect.

  When the foamed resin wall is provided on a part or all of the side surface of the ground reinforcing body of the present invention, the ground reinforcing body is prevented from being inclined in the ground, and the volume of the foamed resin molded body is increased. The vibration absorption effect is further improved.

  Furthermore, when the foamed resin wall is provided with a drainage function, the ground becomes stronger by promoting drainage of the ground around the foamed resin wall, which is effective in preventing uneven settlement and consolidation settlement.

  According to the foundation structure which is the second invention of the present invention, by using the foundation structure of the present invention comprising the foundation portion and the ground reinforcement body in a grave where the load of the structure is biased toward the foundation. In addition, it is possible to prevent the uneven settlement and consolidation settlement caused by the uneven load of the structure.

  Moreover, if the basic structure of the present invention is used, the following further effects can be obtained. That is, a general structure such as a house is stable and difficult to fall because the ratio of the height of the structure to the bottom area is small and the center of gravity of the structure is low. Since the height ratio of the structure is large and the structure is long in the vertical direction, the center of gravity is high and unstable, and it is easy to fall over when a subsidence occurs. However, by using the foundation structure of the present invention, the foundation and the ground reinforcement body of the present invention are integrated, and further, a structure such as a tombstone or a stone monument is provided thereon, so that it is like a conventional structure. The structure standing on the foundation structure of the present invention has an effect that the center of gravity is low and stable and is not easily toppled over the foundation provided with only the foundation on the ground.

  According to the foundation structure construction method of the third invention of the present application, it is possible to easily construct the foundation structure of the present invention without using heavy equipment for construction. The foundation structure of the present invention can be constructed even in a narrow passage.

  1st invention in this application is related with the ground reinforcement body for preventing the uneven settlement of the foundation which the load of a structure biases, and the consolidation settlement of a foundation ground board.

  2nd invention in this application is related with the foundation structure which consists of a foundation part and the said ground reinforcement body.

  3rd invention in this application is related with the construction method of constructing | assembling the said foundation structure which can be easily constructed, without using the heavy equipment for construction.

  The invention is explained in more detail below with the aid of exemplary drawings. FIG. 1 shows an embodiment of the present invention. The ground reinforcing body of the present invention is formed by integrally forming a foamed resin molded body 1 and a concrete molded body 2 in contact with a stepped interface in the ground. The foundation part 3 is provided in contact with the upper surface of the ground reinforcing body to constitute the foundation structure of the present invention. In FIG. 1, a structure 4 is provided on the upper part of the basic structure of the present invention. The structure 4 is provided at a position deviated from the center of the upper surface of the base portion 3 and above a region where the upper surface of the foamed resin molded body 1 and the lower surface of the base portion 3 are in contact with each other.

  In the present invention, the foamed resin molded body 1 and the concrete molded body 2 are integrally molded in contact with each other at an inclined interface. The inclined interface may be smooth as shown in FIG. 2A, may be stepped as shown in FIG. 2B, or may be uneven as shown in FIG. 2C. Alternatively, another arbitrary shape may be provided.

  FIG. 3 shows the shape of the foamed resin molded body 1 in the present invention used in another embodiment. The foamed resin molded body 1 in this embodiment is formed by providing a space portion 7 that communicates from the upper surface to the lower surface in the vertical direction in the central portion.

  FIG. 4 shows an embodiment of the present invention in which a foamed resin wall 8 is provided. In this embodiment, the foamed resin molded body 1 and the concrete molded body 2 are in contact with each other at a stepped interface to integrally form the ground reinforcing body of the present invention, and the upper surface of the ground reinforcing body and the lower surface of the foundation portion 3 are in contact with each other. Thus, the basic structure of the present invention is formed. A plate-like foamed resin wall 8 is provided in contact with one side surface of the foundation structure which is entirely formed by the foamed resin molded body 1. Furthermore, on the basic structure of the present invention, a structure 4 is provided above the contact surface between the upper surface of the foamed resin molded body 1 and the lower surface of the base portion 3.

  FIG. 5 shows an embodiment of the foamed resin wall 8 in the present invention. In this embodiment, a groove 9 is formed on one side surface of the plate-like foamed resin wall 8 so as to cross in the horizontal direction and the vertical direction.

  Note that GL indicates a ground line.

  As the foamed resin used in the foamed resin molded body 1, resin foam particles such as polystyrene resin foam particles, polyethylene resin foam particles, and polypropylene resin foam particles can be used. Specifically, styrene homopolymer resin, styrene copolymer resin produced from styrene and other monomers, styrene homopolymer resin or / and styrene copolymer resin and styrene-butadiene block copolymer. A mixture with a polymer, a rubber-modified styrene resin (impact polystyrene) obtained by polymerizing a styrenic monomer in the presence of a rubbery polymer, or the above-mentioned styrenic resin and another resin or / and Polystyrene resin or polystyrene resin composition having a styrene component ratio of 50% by weight or more, such as a mixture with a rubbery polymer; an ethylene homopolymer resin, an ethylene copolymer prepared from ethylene and other monomers Polymer resins, ethylene homopolymer resins and / or ethylene copolymer resins with vinyl monomers such as styrene monomers A graft-modified ethylene resin obtained by polymerizing by impregnating a polymer, or a polyethylene-based resin having a ethylene component ratio of 50% by weight or more, such as a mixture of the above-mentioned ethylene-based resin and another resin or / and a rubber-like polymer Resin or polyethylene resin composition; propylene homopolymer resin, propylene copolymer resin produced from propylene and other monomers, propylene homopolymer resin and / or propylene copolymer resin and styrene Propylene component ratio of a graft-modified propylene resin obtained by impregnating and polymerizing a vinyl monomer such as a monomer, or a mixture of the above-mentioned propylene resin and another resin or / and a rubber-like polymer is 50% by weight or more. Polypropylene resin or polypropylene resin composition; thermoplastic polyester resin; poly Boneto resin; polyamide resin; polyphenylene ether resin; or a mixture of two or more resins mentioned above and the like. In particular, in the case where the synthetic resin foam 4 is made of a polypropylene resin (including a polypropylene resin composition) foam, it is lightweight and the compression stress and compression set at the time of 5% compression are within the above ranges. It is most preferable because it is easy.

  The foamed resin molded body 1 according to the present invention has a hole 5 formed by excavating the ground in order to embed the ground reinforcing body of the present invention. It embeds in contact with the whole or part of the bottom surface 5 a, in contact with the concrete molded body 2 at the inclined interface, and with the remaining side surface in contact with the side surface of the hole 5.

  The interface of the foamed resin molded body 1 may be a smooth inclined surface 6a as illustrated in FIG. 2A, or may be a stepped inclined surface 6b as shown in FIG. Alternatively, as shown in FIG. C, it may be an inclined surface 6c having uniform or non-uniform irregularities, and may have a shape other than the above shape. The area of the lower surface is larger than the upper surface of the foamed resin molded body 1 of the present invention, and in particular, the lower surface of the foamed resin molded body 1 is in contact with the entire surface of the hole bottom surface 5a, thereby increasing the proportion of the foamed resin molded body in the present invention. In addition, the effect of absorbing earthquakes such as earthquakes is improved.

  The foamed resin molded body 1 in the present invention can be formed into a desired shape and size using any foamed resin forming method. For example, resin foam particles such as the above-mentioned polystyrene resin foam particles, polyethylene resin foam particles, and polypropylene resin foam particles as the material of the foamed resin molded body 1 are filled in a mold for molding into a predetermined shape, and foamed in-mold. Thus, a foamed resin molded body having a desired shape can be produced. As another example, a resin foam obtained by an extrusion foaming method using a resin such as the above-mentioned polystyrene-based resin expanded particles, polyethylene-based resin expanded particles, and polypropylene-based resin expanded particles is formed into a predetermined shape and size. The target foamed resin molded body 1 can be formed by cutting.

  The foamed resin molded body 1 in the present invention may be a single molded body processed in advance by the above-described method, or may be a combination of a plurality of molded bodies. For example, in a ground reinforcing body in which the inclined interface between the foamed resin molded body 1 and the concrete molded body 2 shown in FIG. 1 has a stepped shape, one foamed resin molded body 1 having three stepped portions is provided. You may shape | mold and embed in the hole part 5, or form the foamed resin molding body member of a plate-shaped body from which each area differs, respectively, and embed | buy it in the hole part 5 in an order from a thing with a large area, on a staircase. You may form the foaming resin molding 1 which has the inclined surface 6b.

  In the foamed resin molded body 1 according to the present invention, necessary processing may be arbitrarily performed on the structure of the structure 4 provided on the base portion 3. For example, the ossuary cavity that is in contact with the ground is generally provided inside the gravestone, but when the ground reinforcement body of the present invention is used in a graveyard, the ossuary cavity provided in the gravestone is communicated with the ground. Therefore, the space part 7 as shown in FIG. 3 can be processed into the foamed resin molded body 1.

  In the concrete molded body 2 according to the present invention, the foamed resin molded body 1 is embedded in a hole 5 formed by excavating the ground in order to embed the ground reinforcing body of the present invention. It can be formed by placing concrete so that the upper surface of the concrete molded body 2 is positioned below the foundation 3 in a space portion where 1 is not buried.

  The shape of the concrete molded body 2 is determined by the wall surface of the hole 5 not in contact with the foamed resin molded body and the inclined side surface of the foamed resin molded body 1. Therefore, when placing the concrete, it is easy to form the concrete simply by pouring the concrete into the hole 5 in which the foamed resin molded body 1 is embedded, without providing a formwork generally provided when placing the concrete. The body 2 can be formed. Moreover, you may form a concrete molded object 2 by providing a form as needed. For example, the foamed resin molded body 1 having the space 7 is embedded in the hole 5, and then a mold is provided to form an extended surface that continues from the side surface of the space 7 to the height of the upper surface of the base portion 3 in the vertical upward direction. Place concrete. Thereby, the space which continues from the space part 7 to the upper surface of the foundation part in the vertically upward direction can be formed in the foundation structure of the present invention. If the upper surface of the space and the lower surface of the gravestone ossuary cavity are configured to coincide with each other, even when the foundation structure of the present invention is provided at the graveyard, the ossuary cavity is provided with the base portion 3, the foamed resin molded body 1 and The concrete molded body 2 can communicate with the ground without being shielded.

  In the basic structure of the present invention, as shown in FIG. 1, the upper surface of the foamed resin molded body 1 is in contact with the lower surface of the base portion 3 on which the structure 4 is planned to be arranged, and on the other hand, it is out of the planned arrangement position of the structure 4. The upper surface of the concrete molded body 2 is in contact with the lower surface of the base portion 3 where the influence of the load on the structure 4 is small, and the foamed resin molded body 1 and the concrete molded body 2 are in contact with each other through an inclined interface. It is comprised so that the volume of the concrete molded object 2 may increase as the volume of decreases. According to the said structure, the bias | inclination of the load of the structure 4 with respect to the foundation part 3 and the ground located thereunder is stepwise by the foamed resin molded body 1 having a smaller specific gravity than the ground and the concrete molded body 2 having a larger specific gravity than the ground. Adjusted. As a result, the load due to the uneven load on the ground can be made substantially equal to prevent the uneven settlement of the ground, thereby preventing the uneven settlement of the foundation 3.

  Therefore, in the present invention, the foamed resin molded body 1 is disposed below the planned structure 4, the concrete molded body 2 is disposed at a position side by side with the foamed resin molded body 1, and the foamed resin molded body 1 and the concrete molded body are disposed. It is particularly important to provide the interface with 2 in an inclined manner.

  Although the ground reinforcement body of this invention can be suitably determined in consideration of the shape, weight, etc. of the structure, the preferred shape is a cubic or rectangular parallelepiped shape. The preferred dimensions of the ground reinforcing body of the present invention can be appropriately determined in consideration of the shape and weight of the structure 4, but preferably the cross-sectional area is about 0.5 times the area of the foundation. To about 2.0 times, and the vertical length is between about 20 cm to about 150 cm. Moreover, the volume of the foamed resin molded body 1 and the concrete molded body 2 in the present invention can be appropriately adjusted in the hole 5. Since the volume of the concrete molded body 2 is substantially determined by the volume of the foamed resin molded body 1 in the hole 5, the volume of the foamed resin molded body 1 is adjusted in consideration thereof. Although the volume ratio of the foamed resin molded body 1 and the concrete molded body 2 can be determined as appropriate, it is preferably 0.5: 1 to 4: 1.

  Next, the basic part 3 in the present invention will be described. The foundation 3 located on the upper surface of the ground reinforcement body is generally formed using concrete. The shape and size of the base portion 3 are appropriately determined depending on the shape, size, weight, and the like of the structure 4 provided on the base portion 3. Any foundation suitable for structural calculation as the foundation of the structure 4 can be used as the foundation 3 in the present invention.

  The concrete used for the foundation 3 can be the same as the concrete of the concrete molded body 2 in the present invention. Therefore, after embedding the foamed resin molded body 1, if the reinforcing bars for the foundation part 3 are assembled in advance and an outer frame is provided, then concrete for forming the concrete molded body 2 is placed, and then the foundation part 3 Since the concrete can be placed on the upper surface of the ground reinforcement body, the forming process is smooth and simple.

  Furthermore, the ground reinforcement body which has arrange | positioned the foamed resin wall in part or all of the side surface of the ground reinforcement body of this invention can also be formed. The shape of the foamed resin wall 8 is generally a plate body having a substantially uniform thickness. The thickness of the foamed resin wall 8 can be adjusted as appropriate, but is preferably about 20 mm to about 100 mm. Further, the length of the foamed resin wall 8 in the vertical direction can be appropriately adjusted, but is preferably about 30 cm or more and up to about 1.5 times the vertical length of the ground reinforcing body of the present invention, more preferably the present invention. About 1.0 to 1.5 times the vertical length of the ground reinforcement is desirable. The horizontal length of the foamed resin wall 8 can be adjusted as appropriate depending on the nature of the ground, the location environment, and the load balance of the structure. However, the horizontal length of the ground reinforcement body facing the foamed resin wall is not limited. It is desirable that the length is substantially the same. By providing the foamed resin wall 8, the ground reinforcing body of the present invention is prevented from being tilted in the ground, and the effect of improving the vibration absorption such as an earthquake is improved.

  As the foamed resin material and forming method used for the foamed resin wall 8 in the present invention, the same materials and forming methods as those of the foamed resin molded body 1 can be used. Moreover, in one ground reinforcement body, the foamed resin used for the foamed resin wall 8 and the foamed resin used for the foamed resin molded body 1 may be the same or different.

  Further, the foamed resin wall 8 in the present invention can be provided with a drainage function. In the present invention, the drainage function means a function capable of draining moisture contained in the ground existing around the side surface of the ground reinforcement body of the present invention below the ground reinforcement body. In order to exhibit this drainage function, a cut groove or the like is formed in the foamed resin wall 8, and the foamed resin wall 8 can be provided on the ground reinforcing body so that the side surface having the cut groove or the like faces the ground. As a result, moisture contained in the ground facing the ground reinforcing body 8 can be drained to the lower side of the ground reinforcing body through a kerf or the like. Alternatively, the foamed resin wall 8 having a drainage function can be formed by foaming in-mold foamed resin particles having a cylindrical shape or other shapes on the chip.

FIG. 5 shows an example of the foamed resin wall 8 having a drainage function. The foamed resin wall 8 is formed with a groove 9 that crosses vertically and horizontally on one side surface thereof. The depth of the groove 9 is preferably 10 mm to 20 mm, and the width is preferably 10 mm to 25 mm, but is not limited thereto. The interval at which the groove 9 is provided is usually between 100 mm and 300 mm, and may be appropriately formed depending on the area of the foamed resin wall 8 or the like, but is preferably formed so as to be about 1 per 10 cm ^2. . The depth, width, and interval of the groove 9 are desirably provided in a range that does not reduce the strength of the foamed resin wall 8.

  When a structure is constructed on soft ground with poor drainage, uneven settlement and consolidation settlement tend to occur, but the ground reinforcement of the present invention provided with the foamed resin wall 8 having a drainage function is disposed below the structure. As a result, the problem of drainage is improved, the ground becomes stronger, and the effect of preventing uneven settlement and consolidation settlement can be further improved. Moreover, even if it is the ground where drainage is not bad, the moisture content of the ground rises when it rains, but by placing the ground reinforcement body of the present invention provided with the foamed resin wall 8 having a drainage function below the structure. It is possible to promptly drain the ground, and is effective in reinforcing the ground.

  Furthermore, the periphery of the foamed resin wall 8 having the drainage function can be covered with a water-permeable sheet. As the water-permeable sheet, a woven fabric, a non-woven fabric, or a synthetic resin mesh sheet having a hole diameter through which soil, sand, gravel, etc. in the ground cannot pass is used. A resin nonwoven fabric is preferable, and a polypropylene or polyester nonwoven fabric is particularly preferable. Nonwoven fabrics containing polyethylene in polypropylene or polyester are preferable for use in the present invention because the melting temperatures of the components are different, so that the strength of the fused portion between the fibers is improved during the production of the nonwoven fabric.

  By covering the foamed resin wall 8 having the drainage function with the water permeable sheet, it is possible to prevent clogging due to earth and sand flowing into the drainage grooves 9 provided in the foamed resin wall 8, and This is a desirable mode because the water-permeable pores of the water-permeable foamed resin wall 8 formed by foaming a chip-like foamed resin or a cylindrical foamed resin can be prevented from being clogged with earth and sand, and drainage can be performed smoothly.

  Finally, the foundation structure construction method of the present invention in which the foamed resin wall 8 is provided will be described. First, in order to embed the ground reinforcing body and the foamed resin wall 8 of the present invention, the ground is excavated to form the hole 5. At this time, in the case where the vertical length of the foamed resin wall 8 is longer than the vertical length of the ground reinforcing body, the hole is formed in order to bury the upper surface of the foamed resin wall 8 in alignment with the upper surface of the ground reinforcing body. The periphery of the bottom surface 5a of the portion 5 is further excavated to form a recess. Next, the hole bottom surface 5a is rolled, and a stone material such as sand or cobblestone is drawn on the bottom surface 5a.

  Next, the ground reinforcing body of the present invention is embedded in the hole 5 and the recess. First, the foamed resin wall 8 is embedded in the side surface of the predetermined hole 5 or the concave portion, and then the foamed resin molded body 1 processed into a desired shape is embedded in a predetermined position in the hole 5. Next, an outer frame for the foundation part 3 concrete, and an inner frame for securing a space communicating with the tombstone ossuary cavity if necessary, etc. are provided, and then the reinforcement for the foundation part 3 is assembled, for the concrete molded body 2 Concrete is placed, then concrete for forming the foundation 3 is placed, and then the outer frame and the inner frame are removed.

  According to the foundation structure construction method of the present invention, the foundation structure of the present invention can be easily constructed without using heavy equipment for construction, and thus can be employed even in a narrow land where a structure is adjacent. Moreover, in this construction method, it is possible to form the concrete molded body 2 without providing a formwork, and furthermore, the concrete molded body 2 and the concrete of the foundation portion 3 can be continuously placed, so that work is performed. It is simple.

FIG. 1A is a perspective view, and FIG. 1B is a schematic longitudinal sectional view taken along line XY of FIG. 1A. The interface shape between the foamed resin molded body and the concrete molded body in the present invention is exemplified, and FIG. 2A is a schematic longitudinal sectional view of the ground reinforcement body of the present invention in which the interface between the foamed resin molded body and the concrete molded body is smooth, FIG. Fig. 2C is a schematic longitudinal sectional view of the ground reinforcing body of the present invention in which the interface between the foamed resin molded body and the concrete molded body is stepped, and Fig. 2C is an uneven surface in the interface between the foamed resin molded body and the concrete molded body. It is a longitudinal cross-sectional schematic diagram of a ground reinforcement body. It is a perspective view which shows an example of the foaming resin molding in this invention provided with the space part. An example of the basic structure of the present invention in which a foamed resin wall is provided on one side of the ground reinforcing body is shown, FIG. 4A is a perspective view, and FIG. 4B is a schematic vertical sectional view taken along line V-W in FIG. It is a perspective view which shows an example of the foamed resin wall in this invention which has a drainage function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foamed resin molded body 2 Concrete molded body 3 Base part 4 Structure 5 Hole part 5a Hole part bottom face 6a Smooth inclined surface 6b Stair-like inclined surface 6c Uneven-shaped inclined surface 7 Space part 8 Foamed resin wall 9 Groove

Claims (5)

  A ground reinforcing body provided below the base portion, wherein the ground reinforcing body is formed by integrally forming a foamed resin molded body and a concrete molded body, and the foamed resin molded body is formed on a part of the lower surface of the base portion. The ground is characterized in that the upper surface of the base is in contact, the upper surface of the concrete molded body is in contact with the other part of the lower surface of the foundation portion, and the foamed resin molded body and the concrete molded body are in contact at an inclined interface. Reinforcing body.   The ground reinforcement body according to claim 1, wherein a foamed resin wall is disposed on a part or all of the side surface of the ground reinforcement body.   The ground reinforcing body according to claim 2, wherein the foamed resin wall has a drainage function.   A foundation structure comprising the foundation portion and the ground reinforcement body according to any one of claims 1 to 3. A step of forming a hole by drilling in a region for constructing a foundation, a step of embedding a foamed resin molding in a part of the hole, and a concrete molding by placing concrete in the remaining portion of the hole Forming a foundation part by placing concrete for a foundation part on the upper surface of a ground reinforcement body formed of a foamed resin molding and a concrete molding.

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