JPH11217838A - Execution method of columnar structure and foundation of columnar structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an execution method, by which various points at issue with the transport of heavy articles in a conventional construction method regarding the installation of a columnar structure, installation works by a large- sized heavy machine or the cast-in-place works of concrete are solved, weight is lightened, the terms of works may also be shortened and cost is reduced and which can be applied to the columnar structure within a wide range. SOLUTION: The execution method of the columnar structure consists of a process (a), in which a hole 100 corresponding to the size of the foundation of the columnar structure is excavated to a ground surface, a process (b), in which the shape of the hole 100 is adjusted, a process (c), in which a sill 101 is manufactured on the bottom section of the hole 100 and levelling is conducted, a process (d), in which the columnar structure, in which the foundation 1 composed of a foamed synthetic-resin molded form is fixed onto the base section 2a, is disposed in upright onto the sill 101 in the hole 100, and a process (e), in which the hole 100 is backfilled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pole or pole light, a bollard, a telephone pole, a traffic signal, a support for a display board or an advertising board, a support for an approach light, a support for various fences such as a wire mesh fence, a support for a guardrail, and a post box. And construction methods of various columnar structures such as columns of telephone boxes, and the foundation of the columnar structures.

[0002]

2. Description of the Related Art Currently, poles, pole lights, bollards, telephone poles, traffic signals, display boards and advertising boards, and poles for approler lights, which are currently installed in parks, roads, open spaces, etc.
When pillar structures such as pillars of various fences, pillars of guardrails, pillars of post boxes, and pillars of telephone boxes are installed, concrete or reinforced concrete is used as a foundation for these. In particular,
The foundation part of the structure is hardened with concrete and buried in the ground, or a concrete foundation with an anchor is set in the ground in advance, and poles of columnar structures are connected to anchor bolts set up on it Is adopted.

[0003] In the former method, the lower part of a pole or the like is brought to the site as a form which has been previously hardened with concrete in a factory.
They excavate the ground, place concrete in the holes, and backfill the soil. However, this construction method simplifies on-site construction and shortens the construction period, but usually requires about 4 weeks of curing time in order to secure the specified strength and hardness to concrete with poles etc. Therefore, a place for curing in a factory or the like is also required. further,
In this case, the weight of the concrete itself is very large, and the transportation problem becomes a major obstacle. For example, when installing a pole light 5m above the ground, the foundation is usually 0.6m x 0.6
Although a concrete having a size of about mx 1.2 m is required, the weight of this concrete is about 1 ton, and even when transported by a 10-ton truck, only 10 pieces can be stacked at one time. Moreover, it is necessary to use a large heavy machine to install such heavy poles on site.
Not only is there a problem that the installation cost is increased, but also the impact on the local community due to traffic obstacles caused by the installation of large heavy equipment is great.

On the other hand, in the latter method, only poles such as columnar structures are brought to the site, and the foundation is constructed on the site. Therefore, there is no need to transport heavy objects as described above and use a large heavy machine for installation. However, casting concrete in place requires a concrete mixer truck, which may also cause traffic obstacles and the like. In addition, it is necessary to prepare a concrete formwork at the site, and after the concrete is poured, a curing period of about four weeks is required to secure a predetermined strength and hardness. Removal work and the like are also required, and the harm and cost increase due to the prolonged construction period cannot be avoided.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to various problems associated with the installation of a columnar structure as described above, which involves heavy goods transportation, installation work using large heavy equipment, or concrete casting on site. In view of the above, an object of the present invention is to provide a construction method which is light in weight, requires a short construction period, is inexpensive, and can be applied to a wide range of columnar structures, and a basic structure therefor.

[0006]

Means for Solving the Problems As a result of intensive studies to achieve the above object, the present inventors have found that, instead of concrete, a material which is lighter and does not require curing or the like, that is, expanded polystyrene It has been found that the above object can be achieved by constructing a molded article of a foamed synthetic resin as described above.

According to the study of the present inventors, when a foamed synthetic resin molded article such as expanded polystyrene is used in place of conventional concrete as a foundation of a columnar structure buried underground in civil engineering work, a large It was found that even when used for a long time under a state where a force is applied, surprisingly excellent mechanical properties are exhibited, and the molded article is hardly embrittled. Therefore, utilizing this property, the idea of using a foamed synthetic resin molded article such as the expanded polystyrene as a basis for constructing the various columnar structures as described above, instead of the conventional concrete, was obtained. This is to apply a load or other mechanical force required for holding a columnar structure such as a pole to the foamed synthetic resin molded article, and is a novel idea that has never been considered before.

That is, the first aspect of the method for constructing a columnar structure according to the present invention is: (1) a step of excavating a hole in the ground in accordance with the size of the foundation of the columnar structure; Adjusting step; (3) forming a base at the bottom of the hole to adjust the level; and (4) erecting a columnar structure having a base made of a foamed synthetic resin molded body fixed to the base on the base in the hole. And (5) backfilling the holes.

A second aspect of the method for constructing a columnar structure according to the present invention is: (1) a step of excavating a hole in the ground in accordance with the size of the foundation of the columnar structure; (3) a step of forming a base at the bottom of the hole and performing level adjustment; and (4) a base made of a foamed synthetic resin molded article having a fixing portion for a columnar structure provided on an upper surface, on a base in the hole. (5) a step of backfilling the holes, and (6) a step of erecting and fixing a columnar structure to a fixing part on the upper surface of the foamed synthetic resin molded article.

By the way, the size of the foamed synthetic resin molded article which forms the basis of the above-mentioned columnar structure differs depending on the size of the columnar structure. For example, in the case of a pole of about 5 m, 800 mm × 800 mm A 1 × 100 mm comb or a block having a size of about 1300 mm is required. When molding such a large block-shaped foamed synthetic resin molded article, it is necessary to adopt a structure in which unit molded bodies divided into a plurality are connected in consideration of productivity such as heating efficiency and cooling efficiency at the time of molding. Is taken into account. In the case of a structure in which the base end of the columnar structure is inserted into the inside of the base made of the synthetic resin foam molded body, the molded body is divided into a plurality of unit molded bodies, and the structure is formed by each unit molded body. Is advantageous in terms of workability during construction. In this case, in order to connect each unit molded body in a block shape and use it as the basis of a columnar structure, the unit molded bodies are connected and fixed in a block shape with a wire, reinforcing bar, or bolt that penetrates each unit molded body To be considered.
However, when wires or bolts are connected to each unit molded body and connected to each other, depending on the situation after construction, if there is displacement or rattling between the connected bodies due to swinging of the columnar structure, etc. The strength of the foundation may be reduced due to cracks in the molded body around the portion where the connecting member such as the wire, the reinforcing bar, the bolt, etc., which penetrates and is connected and fixed therebetween, is formed.

Therefore, in the present invention, as a base of the columnar structure made of the above-mentioned foamed synthetic resin molded body, a plurality of unit foams are connected to each other while maintaining a sufficient strength. Provided is a foam synthetic resin base capable of reducing moldability and molding cost during foam molding and improving workability during construction.

That is, the basis of the columnar structure according to the present invention is:
It consisted of a linked body of unit molded bodies made of a foamed synthetic resin and divided into a plurality of units, provided with through holes penetrating the unit molded bodies, fitted a pipe in the through holes, and inserted into the pipes. Each unit molded body is connected and fixed by a connecting member. In this way, by forming the base made of a foamed synthetic resin molded body from a connected body of a plurality of unit foams, the heating efficiency and cooling efficiency at the time of molding are good, the molding cycle can be shortened, and the productivity is improved, Production costs can be reduced. In addition, by connecting and fixing the connecting member in a pipe fitted in a through hole penetrating each unit molded body, after construction of the columnar structure, displacement or rattling between the unit molded bodies due to shaking or the like occurs. Even in the case of the occurrence, since the connecting member is in the pipe and does not directly contact the foamed synthetic resin body, there is no possibility that the molded body cracks or the like from here and the strength is reduced.

As a basis of the columnar structure, a mounting hole for inserting a lower portion of the columnar structure is drilled at a predetermined depth on an upper surface, and is divided and formed with one or a plurality of vertical surfaces passing through the mounting hole. A structure having a through-hole that penetrates each of the unit molded bodies substantially horizontally can be adopted. In the case where the columnar structure is divided and formed on the vertical plane passing through the mounting hole for inserting the foundation of the columnar structure, the columnar structure is attached by enclosing the base end portion of the structure with each divided unit molded body. The work of attaching the foundation to the object becomes extremely easy.

In the foundation of the above structure, a reinforcing plate is joined to the upper and lower surfaces, a through hole is provided to penetrate vertically, a pipe is fitted into the through hole, and the upper and lower members are connected by a connecting member inserted into the pipe. It is preferable that the connecting body of the unit molded body is sandwiched between the reinforcing plates and connected and fixed. As described above, by providing the reinforcing plates on the upper and lower surfaces and sandwiching the linked body of the unit molded body, the strength of the foundation made of the foamed synthetic resin molded body is further improved.

Further, in addition to the above, by providing a reinforcing ring externally fitted to the columnar structure at the upper end opening of the mounting hole, it is possible to reinforce the peripheral edge of the upper end opening and prevent the columnar structure from rotating. . This reinforcing ring may be formed integrally with a reinforcing plate joined to the upper surface.

In the case where a mounting hole is provided by vertically penetrating the linked body of unit molded bodies, a receiving member which comes into contact with the lower end of the columnar structure inserted into the mounting hole at the lower end opening of the mounting hole. Is preferably attached. By attaching this receiving member, the structure can be reliably supported. The receiving member may be formed integrally with a reinforcing plate joined to the lower surface.

Another structure of the foundation of the columnar structure according to the present invention is composed of a connected body of unit molded bodies divided into a plurality of parts along the vertical direction, and fixed on the upper surface of the columnar structure. A plate is joined to a reinforcing plate on the lower surface, a through hole is provided to penetrate vertically, a pipe is fitted into the through hole, and a fixing plate on the upper surface and a reinforcing plate on the lower surface are connected by a connecting member inserted into the pipe. Are connected and fixed by sandwiching a connected body of unit molded bodies.

Further, in the above case, by providing a connecting portion that is fitted into and recessed from each other on one and the other of the unit molded bodies joined to each other, not only the work of connecting and fixing the unit molded bodies is facilitated, but also After the construction, the displacement and rattling between the unit molded bodies due to the swing of the columnar structure and the like are suppressed, and the strength is improved.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the type of base resin of a foamed synthetic resin molded article used as a basis of a columnar structure is not particularly limited, and a foam made of independent foaming can be formed. A wide range of synthetic resins can be used. Specific examples of the base resin include styrene resins such as polystyrene, olefin resins such as polypropylene and polyethylene, and urethane resins such as polyurethane. Further, an oil-resistant synthetic resin, a heat-resistant synthetic resin, or the like can be used depending on the application. As the styrene resin, besides polystyrene obtained by polymerizing only a styrene monomer, high-impact polystyrene partially mixed with synthetic rubber or rubber latex can be used.

The foamed synthetic resin molded article may be a foamed synthetic resin alone, but if synthetic fiber, carbon fiber, inorganic fiber, metal fiber, wood chip or the like is included as a reinforcing material, the reinforcing material becomes a molded article. It is more preferable because it is dispersed inside to improve the mechanical properties and the strength of the molded body is improved.

The foundation of the columnar structure according to the present invention as described above includes poles, pole lights, bollards, telephone poles, traffic lights, display boards and advertising board supports, approach light supports,
It can be used as a base for a wide range of columnar structures such as pillars of various fences such as wire mesh fences, pillars of guardrails, pillars of post boxes, and pillars of telephone boxes. In addition, the approach light refers to a low light installed on a lawn or the like along a passage in a park or a similar structure.

The foam forming method used as the basis of the columnar structure used in the present invention may be a conventional bead foam forming method.
Also, an extrusion molding method may be used. Such synthetic resin foams have high compressive strength and excellent mechanical properties even when formed into a molded body with a high degree of foaming because the cells contained therein are closed cells, but the columnar shape When the base of the structure is used, a high compressive strength is required. Therefore, a foaming degree is a medium foaming degree (generally 10 to 20 times), and a molded article having a further lower foaming degree is preferable depending on the application.

The size of the foundation made of the foamed synthetic resin molded article may be the same as that of the concrete foundation of the conventional method, but it is preferable to make the molding a little larger than that because the stability increases. . In the foundation used in the present invention, the number of columnar structures attached to one foundation is not limited to one, and a plurality of columnar structures may be attached to the same foundation. For example, two adjacent pillars of the guardrail may be mounted side by side on a single horizontally formed foundation at an interval. In this case, the interval between the two columns, that is, the alignment and level adjustment of the two columns becomes extremely easy.

Hereinafter, the present invention will be described in more detail with reference to the drawings. The method of constructing the columnar structure of the present invention is to excavate the ground according to the size of the foundation, and if necessary, provide a base on which the chestnut stone, goethite is grounded with soil or a small amount of mortar, etc. This is a method of burying excavated soil after setting up a foundation.

More specifically, first, as shown in FIG. 1, in a structure in which the base 2a of a columnar structure such as a pole 2 is directly inserted into a base 1 made of a foamed synthetic resin molded body,
After the base 2a of the pole 2 is inserted and fixed in a hole provided in advance inside the base, the foundation 1 is placed together with the base 2a of the pole 2 in a hole excavated according to the size of the foundation 1, and the excavated soil is backfilled. . That is, as a construction procedure in this case, as shown in FIG. 2, a hole 100 is excavated in the ground (FIG. 2).
a), the shape of the hole 100 is adjusted (FIG. 2b), the base 101 is formed at the bottom of the hole 100, the level is adjusted (FIG. 2c), and the base 1 made of a foamed synthetic resin molded body is fixed to the base 2a. The pillar-shaped structure such as the pole 2 is inserted into the hole 100.
(FIG. 2d).
00 is backfilled (FIG. 2e) to complete the construction.

The hole 100 for burying the foundation 1 and erecting the columnar structure 2 has an area corresponding to the size of the foundation 1 by human power using a scoop or the like or by using an earth drill or the like.
And excavate to a depth. In this case, the excavated hole 10
If there are irregularities on the wall surface of No. 0 or irregularities on the bottom surface, it may hinder the erecting work of the columnar structure 1 in a later process. On the bottom of the, a base made of chestnut stone and gothite with soil or a small amount of mortar is provided and the level is adjusted. Base 1 consisting of this chestnut stone, gothic stone, etc.
01 also functions as a drainage structure on the lower surface of the foundation 2.

After excavating and adjusting the hole 100 as described above, and further adjusting the level by providing the base 101 on the bottom surface, the base 1 made of a synthetic foam resin fixed to the base 2a of the columnar structure 2 is removed. It stands on the base 101 in the hole 100. In this case, the foundation 1 may be fixed to the pole 2 at a construction site, or may be fixed in a factory or the like in advance. Even when the foundation 1 is fixed to the pole 2 in a factory or the like in advance, the transportation cost is extremely high because the foundation 1 used in the present invention is made of a foamed synthetic resin molded article which is much lighter than conventional concrete. There is no risk of increase.

Next, as shown in FIG. 3, an anchor bolt 3 for fixing a pole 2 of a columnar structure is embedded in a foundation 1 made of a foamed synthetic resin molded body, and a pole fixing portion 4 is provided on the upper surface. In the case where the pole 2 is installed, the anchor bolt 3 and the installation bolt holes formed in the columnar structure 2 such as the pole 2 are aligned and fixed with a nut to mount the pole 2 on the foundation 1. That is, as a construction procedure in this case, as shown in FIG. 4, a hole 100 is excavated in the ground (FIG. 4a),
The shape of the hole is adjusted (FIG. 4b), a base 101 is formed at the bottom of the hole 100, and the level is adjusted (FIG. 4c).
After the foundation 1 made of a foamed synthetic resin molded body having the pole fixing portion 4 provided on the upper surface is installed on the base 101 in the hole 100 (FIG. 4d), the hole is backfilled (FIG. 4e). Fixed part 4 on the upper surface of base 1 made of a synthetic resin molded body
Then, the columnar structure 2 is erected and fixed (FIG. 4f), and the construction is completed.

As described above, according to the method for constructing a columnar structure according to the present invention, the base 1 for fixing the base 2a of the columnar structure 2 is a foam synthetic resin molded article which is extremely lighter than conventional concrete. It is not only possible to eliminate heavy loads, installation work that requires large heavy equipment, concrete pouring at the site, and the dangers and traffic obstacles associated with it. The construction work of the columnar structure is facilitated without any problems such as prolonging the construction period due to curing, installation and removal of the concrete formwork, and the construction period and economic efficiency can be greatly improved.

Next, the basis of the columnar structure according to the present invention will be described. 5 is an exploded perspective view showing one embodiment of the foundation of the columnar structure according to the present invention, FIG. 6 is a plan view thereof, FIG. 7 is a sectional view taken along the line AA in FIG. 6, and FIG.
FIG. 9 is a sectional view taken along the line CC in FIG. The base 10 is made of a foamed synthetic resin molded body, for example, a foamed polystyrene molded body, and is provided with a mounting hole 11 for inserting the base 2a of the columnar structure 2 vertically through the base 10. The base 10 is composed of a connected body of unit molded bodies 10A and 10B divided into two by a vertical plane passing through the mounting hole 11, and a through hole 12 that substantially penetrates each of the unit molded bodies 10A and 10B. Are provided at a plurality of locations in the vertical direction of the foundation 10 over both unit molded bodies 10A and 10B, and a pipe 13 is fitted in the through hole 12 and a wire 14 as a connecting member inserted through the pipe 13 Thus, the unit molded bodies 10A and 10B are connected and fixed to each other. In the illustrated example, a pipe 13 fitted in a through hole 12 of each of the unit foams 10 and 10B after applying a contact plate 20 such as a metal plate to a side surface of each of the unit foams 10A and 10B.
Both ends of the wire 14 inserted therein are fixed to the outer surface of the contact plate 20 by stoppers 21. Further, an upper reinforcing plate 15A and a lower reinforcing plate 15B each having a hole 15a through which the columnar structure 2 is formed are joined to the upper and lower surfaces of the foundation 10 formed of the unit body 10A and 10B, respectively. At the four corners of the base 10, through holes 16 penetrating the base 10 up and down are provided, a pipe 17 is fitted into the through hole 16, and both ends of a wire 18 as a connecting member inserted into the pipe 17 Are fixed to the outer surfaces of the upper and lower reinforcing plates 15A and 15B by stoppers 22, and the upper and lower reinforcing plates 15A,
The unit molded bodies 10A and 10B are sandwiched between 15B and connected and fixed by the wire 18.

Further, in the illustrated example, a reinforcing ring 23 externally fitted to the columnar structure 2 from above the upper reinforcing plate 15A is fitted to the upper end opening of the mounting hole 11 of the base 10, while the base 10 A receiving member 24 is attached to the lower end opening of the mounting hole 11 vertically penetrating the lower end of the columnar structure 2 inside the lower reinforcing plate 15B. The reinforcing ring 23 is provided with a flange portion 23a abutting on an outer edge of the opening of the hole 15a of the upper reinforcing plate 15A.
And a tubular portion 23b fitted into the mounting hole 10 of the foundation 10, and is formed in an annular shape having a substantially L-shaped cross section.
The cylindrical portion 23b that fits inside has a wedge-like shape whose thickness decreases toward the distal end, thereby facilitating the fitting into the mounting hole 11 and simultaneously firmly fixing the columnar structure 2. Further, the receiving member 24 includes a flange portion 24a that contacts the upper surface of the reinforcing plate 15B, and a support protrusion 2 that fits into the mounting hole 11 of the foundation 10 and contacts the lower end surface of the columnar structure 2.
4b.

As in this embodiment, a base 10 made of a foamed synthetic resin molded body is divided into a plurality of unit foams 10A, 10B.
, The heating efficiency and cooling efficiency during molding are good, the molding cycle is shortened, the productivity is improved, and the production cost can be reduced. Further, when the columnar structure 2 is divided and formed on a vertical plane passing through the mounting hole 11 into which the base 2a of the columnar structure 2 is inserted, each of the divided unit molded bodies 1 is formed.
By attaching the base 10 to the columnar structure 2 so as to enclose the base 2a with 0A and 10B, the work of attaching the foundation 10 to the columnar structure 2 becomes extremely easy. In the case of the base 10 in the illustrated example, the unit is divided into two unit molded bodies 10A and 10B, but it is also possible to divide the unit into four or more. As the number of divisions increases, the size of each unit molded body decreases, and moldability and productivity are improved. However, if the division is too small, the strength of the entire base 10 tends to decrease. It is preferable to limit the number to about four.

Further, as described above, each unit molded body 10A,
By inserting and fixing a wire 14 as a connecting member into a pipe 13 fitted in a through hole 12 penetrating through the 10B, after the columnar structure 2 is constructed, the unit molded bodies 10A, 10B When the wire 14 is displaced or rattled, the wire 14 is in the pipe 13 and does not directly contact the foamed synthetic resin body. . The number of the through holes 12 is not particularly limited, and the size of the base 10, each divided unit molded body 10
The number may be appropriately set according to the size of A, 10B, the divided shape, and the like. The connecting member is not limited to the wire 14 in the illustrated example, but may be a reinforcing bar or a bolt. The pipes 13 fitted in the through holes 12 are fitted in the through holes 12 after forming the unit molded bodies 10A and 10B. In addition, in the thing of a figure example, although the pipe 13 is divided | segmented into each unit molded object 10A, 10B, after joining both unit molded objects 10A, 10B,
One pipe 13 may be provided so as to penetrate across both unit molded bodies. As a material of the pipe 13, a pipe made of synthetic resin such as vinyl chloride, a metal pipe, or the like can be used. The hole diameter of the pipe 13 may be any size as long as the connecting member can be inserted into the inside of the pipe 13. It is preferable from the viewpoint of prevention of occurrence, and it is preferable that there is a gap between the connecting members such as the wire 14 inserted thereinto when the gap or rattling occurs between the unit molded bodies 10A and 10B. This is preferable because the tolerance of the movement of a certain wire 14 increases. The pipe also serves as a reinforcing member for the molded synthetic resin foam 10.

Further, as in this embodiment, reinforcing plates 15A, 15B are provided on the upper and lower surfaces of a base 10 made of a foamed synthetic resin molded body.
Is provided, the strength of the foundation 10 is further improved. It is preferable to use a metal plate as the reinforcing plates 15A and 15B, but a synthetic resin plate may be used depending on the application.

Further, by providing a reinforcing ring 23 which is fitted to the columnar structure 2 at the upper end opening of the mounting hole 11, the mounting hole 11
Can reinforce the periphery of the upper end opening of the columnar structure 2
Can be firmly fixed to the foundation 10 by preventing its rotation. The material of the reinforcing ring 23 may be made of a synthetic resin such as vinyl chloride resin, polypropylene, polyethylene, or polystyrene, or may be made of metal. And may be formed integrally with the reinforcing plate 15A to be joined to the base plate.

In the case where the mounting hole 11 is provided vertically above and below the foundation 10 as shown in the figure, a receiving member 24 which is in contact with the lower end of the structure 2 is mounted on the lower end opening of the mounting hole 11. Thereby, the columnar structure 2 can be reliably supported. The material of the receiving member 24 may be made of a synthetic resin such as vinyl chloride resin, polypropylene, polyethylene, or polystyrene or metal as in the case of the reinforcing ring 23. May be formed integrally with the reinforcing plate 15B joined to the lower surface of the base plate.

Although the columnar structure 2 and the mounting hole 11 of the foundation 10 into which the columnar structure 2 is inserted have a circular cross section, they may have a quadrangular or polygonal cross section.

FIG. 10 is an exploded perspective view of another embodiment of the foundation of the columnar structure according to the present invention.
1 is a plan view thereof, and FIG. 12 is a sectional view taken along line DD in FIG. The foundation 30 of this columnar structure is formed of a connected body of three unit molded bodies 30A to 30C divided and formed in the up-down direction, and a fixing plate 31 for erecting and fixing the columnar structure 2 is joined to the upper surface thereof. A reinforcing plate 32 is joined to the lower surface,
At the four corners of the base 30, through holes 33 are provided which penetrate vertically through the unit molded bodies 30A to 30C.
3 is fixed to the outer surface of the fixing plate 31 and the reinforcing plate 32 by stoppers 36 at both ends of a wire 35 as a connecting member inserted into the pipe 34 so that the fixing plate on the upper surface is fixed. 31 and reinforcing plate 32 on the lower surface
And the unit molded bodies 30A to 30C made of foamed synthetic resin are sandwiched and fixedly connected. In the embodiment shown in the drawings, the mounting portion 2A integrally formed at the lower end of the columnar structure 2 is connected to the fixing plate 31 on the upper surface of the foundation 30 by wires 35.
, The columnar structure 2 is erected and fixed on the foundation 30. Also in this case, as the connecting member,
A reinforcing bar, a bolt, or the like can be used in addition to the wire 35 described above.

Further, in the foundation 30, a connection portion is provided on each of the unit molded bodies 30A to 30C which are vertically joined so as to be fitted into and recessed from each other. That is, a fitting concave portion 37A is provided on the lower surface of the uppermost unit molded body 30A, and a fitting convex portion 37B fitted to the fitting concave portion 37A is provided on the upper surface of the intermediate unit molded body 30B, and on the lower surface thereof. Is provided with a fitting concave portion 38A, and further provided on the upper surface of the lowermost unit molded body 30C with a fitting convex portion 38B which fits into the fitting concave portion 38A, and each of the fitting portions 37A and 37B, and 38A 38B
And three unit molded bodies 30A-3
0C is connected up and down. In this way, by providing the connecting portions that are fitted into each of the unit molded bodies 30A to 30C so that the concave and convex portions are fitted to each other, not only the work of connecting the unit molded bodies 30A to 30C is facilitated, but also the columnar shape after the construction. The displacement and rattling between the unit molded bodies 30A to 30C due to the shaking of the structure 2 and the like are suppressed, and the strength of the foundation 30 made of the foamed synthetic resin molded body is improved.

Also in the case of this embodiment, each unit compact 30
The connecting members such as the wires 35 connecting the A to 30C, the materials and the sizes of the pipe 34, the fixing plate 31, the reinforcing plate 32, and the like are the same as those in the previous embodiment.

As the basic base resin composed of the above-mentioned foamed synthetic resin molded body, polyethylene, polypropylene, polyurethane and the like can be used in addition to the above-mentioned polystyrene. Among them, polystyrene foam is economically advantageous. When the load applied to the foundation is large, such as the weight of a columnar structure such as a pole, or when tear strength is required, a high-impact polystyrene foam can be used. In terms of chemical resistance and the like, it is advantageous to use a foam of a polyolefin-based resin such as polyethylene or polypropylene. The degree of foaming of these foamed synthetic resin molded articles can be appropriately set according to the application. When strength is required, a foam having a low degree of foaming is used. Further, when it is necessary to improve the strength of the foamed synthetic resin molded product, a foamed product in which a reinforcing material having high tensile strength is uniformly dispersed can be used. As the reinforcing material, synthetic fibers, carbon fibers, inorganic fibers such as rock wool, metal fibers such as steel wool and aluminum wool, and wood chips can be used. Further, a wire net or the like may be embedded in the molded body.

[0042]

According to the present invention, there is provided a method for constructing a columnar structure,
Because a foundation made of foamed synthetic resin molding is used instead of the concrete foundation of the conventional method, heavy work involved in the installation work, concrete placement work, installation work that requires large heavy machinery and the danger associated with it It is possible to eliminate traffic obstacles, work is easy, and there is no need for curing, there is no need to create and remove concrete formwork, and the construction period is short, so economic efficiency is greatly improved. Becomes possible.

The foundation of the columnar structure according to the present invention is composed of a linked body of unit molded bodies made of a synthetic resin foam and divided into a plurality of units. A pipe is fitted in the hole, and the unit molded bodies are connected and fixed by a connecting member inserted through the pipe. As described above, by forming the base made of the foamed synthetic resin molded body from the connected body of the plurality of unit foams, the heating efficiency and the cooling efficiency at the time of molding are improved, the molding cycle can be shortened, and the productivity is improved. Thus, production costs can be reduced. In addition, by connecting and fixing the connecting member through a pipe fitted in a through hole penetrating each unit molded body, after construction of the columnar structure, displacement or rattling between the unit molded bodies due to shaking or the like. Even in the case of the occurrence, since the connecting member is in the pipe and does not directly contact the foamed synthetic resin body, there is no possibility that the molded body cracks or the like from here and the strength is reduced. Further, the pipe serves as a base reinforcing material made of a foamed synthetic resin molded article.

A mounting hole for inserting the lower portion of the columnar structure is formed at a predetermined depth on the upper surface, and a unit molded body of unit molded bodies divided and formed on one or a plurality of vertical surfaces passing through the mounting hole. In a structure having a through-hole that penetrates each of the unit molded bodies substantially horizontally, the columnar structure is attached by enclosing the base end portion of the structure with each of the divided unit molded bodies. The work of attaching the foundation to the work becomes extremely easy.

In the foundation of the above structure, reinforcing plates are joined to the upper and lower surfaces, through holes are provided to penetrate vertically, a pipe is fitted in the through holes, and the upper and lower members are connected by a connecting member inserted into the pipe. The strength of the foundation is further improved by sandwiching and fixing the connected body of the unit molded body between the reinforcing plates.

Further, in addition to the above, by providing a reinforcing ring externally fitted to the structure at the upper end opening of the mounting hole, it is possible to reinforce the periphery of the upper end opening and prevent the structure from rotating.

In the case where the mounting hole is vertically penetrated, a receiving member which is in contact with the lower end of the structure is attached to the lower end opening of the mounting hole, so that the structure can be reliably supported. it can.

Also, it is composed of a connected body of unit molded bodies divided into a plurality of parts in the vertical direction, and a fixed plate for standing and fixing the columnar structure is joined to the upper surface thereof, and a reinforcing plate is joined to the lower surface, and the upper and lower surfaces are joined. A through-hole was provided and a pipe was fitted into the through-hole, and a connecting member of the unit molded body was connected and fixed between the fixing plate on the upper surface and the reinforcing plate on the lower surface by a connecting member inserted into the pipe. In the thing, the heating efficiency and the cooling efficiency at the time of molding are good by forming the base made of the foamed synthetic resin molded body from the connected body of the plurality of unit foams,
The molding cycle can be shortened, the productivity is improved, and the production cost can be reduced. In addition, by connecting and fixing the connecting member in a pipe fitted in a through hole penetrating each unit molded body, after construction of the columnar structure, displacement or rattling between the unit molded bodies due to shaking or the like occurs. If that happens,
Since the connecting member is inside the pipe and does not directly contact the foamed synthetic resin body, there is no danger that the molded body will crack or the like from this and the strength will be reduced, and since reinforcing plates are provided on the upper and lower surfaces , Will be a greater foundation of strength.

Further, in the above case, by providing a connecting portion which is fitted into each of the unit molded bodies to be joined in a concave and convex manner, not only the work of connecting and fixing the unit molded bodies can be simplified, but also after the construction is completed. In the method, the displacement and rattling between the unit molded bodies due to the swing of the columnar structure and the like are suppressed, and the strength is improved.

Further, if a reinforcing material such as synthetic fiber, carbon fiber, inorganic fiber, metal fiber, and wood chip is included in the foamed synthetic resin molded article, the strength of the foundation is further improved.

The foundation of the columnar structure according to the present invention as described above includes poles, pole lights, bollards, electric poles, traffic signals, display boards and advertising board supports, approach light supports,
Alternatively, it can be used as the basis for a wide range of columnar structures, such as telephone box columns.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a main part showing an example of a columnar structure constructed by the method of the present invention.

FIG. 2 is a process explanatory view showing one example of the method of the present invention.

FIG. 3 is an explanatory sectional view of a main part showing another example of a columnar structure constructed by the method of the present invention.

FIG. 4 is a process explanatory view showing another example of the method of the present invention.

FIG. 5 is an exploded perspective view of one embodiment of the foundation of the columnar structure of the present invention.

FIG. 6 is a plan view of a foundation of the columnar structure.

7 is a sectional view taken along the line AA in FIG. 6;

FIG. 8 is a sectional view taken along line BB in FIG. 6;

FIG. 9 is a sectional view taken along the line CC in FIG. 6;

FIG. 10 is an exploded perspective view of another embodiment of the foundation of the columnar structure of the present invention.

FIG. 11 is a plan view of a foundation of the columnar structure.

FIG. 12 is a sectional view taken along line DD in FIG. 11;

[Explanation of symbols]

1: foundation, 2: pole (columnar structure), 2A: pole (columnar structure) base, 3: anchor bolt, 4: pole fixing part, 10: foundation, 10A, 10B: unit molded body, 11: mounting hole , 12: through hole, 13: pipe, 14: wire, 15A, 15B: reinforcing plate,
16: through hole, 17: pipe, 18: wire,
20: this plate, 21: stopper, 22: stopper, 23: reinforcing ring, 24: receiving member, 30: foundation,
30A to 30C: unit molded body, 31: fixed plate, 3
2: reinforcement plate, 33: through hole, 34: pipe, 3
5: Wire, 36: Stopper, 37A: Fitting concave, 37B: Fitting convex, 38A: Fitting concave, 38
B: fitting projection, 100: hole, 101: base.

Claims (12)

[Claims] (1) a step of excavating a hole in the ground according to the size of a foundation of a columnar structure; (2) a step of adjusting the shape of the hole; and (3) a base is formed at the bottom of the hole. (4) erecting a columnar structure having a base made of a foamed synthetic resin molded body fixed on a base on a base in the hole, and (5) backfilling the hole. Construction method of columnar structure. 2. A step of excavating a hole in the ground according to the size of the foundation of the columnar structure, a step of adjusting the shape of the hole, and a step of forming a base on the bottom of the hole. (4) placing a foundation made of a foamed synthetic resin molded article having a columnar structure fixing portion on the upper surface on a base in the hole, (5) backfilling the hole,
(6) A method for constructing a columnar structure, comprising: erecting and fixing a columnar structure on a fixing portion on the upper surface of the foamed synthetic resin molded body. 3. A molded product made of a foamed synthetic resin and formed of a plurality of unit molded bodies connected to each other, a through-hole passing through each molded body is provided, and a pipe is fitted into the through-hole. The base of a columnar structure in which each unit molded body is connected and fixed by a connecting member inserted in the column. 4. A connection body of unit molded bodies formed by forming a mounting hole for inserting a lower portion of a columnar structure at a predetermined depth on an upper surface thereof and dividing and forming one or a plurality of vertical surfaces passing through the mounting hole. 4. The foundation of a columnar structure according to claim 3, wherein a through hole is provided to penetrate each unit molded body substantially horizontally. 5. A reinforcing plate is joined to the upper and lower surfaces, a through-hole penetrating vertically is provided, a pipe is fitted in the through-hole, and a unit is inserted between the upper and lower reinforcing plates by a connecting member inserted into the pipe. The foundation of the columnar structure according to claim 4, wherein the connection of the molded bodies is sandwiched and fixed. 6. The foundation for a columnar structure according to claim 4, wherein a reinforcing ring externally fitted to the columnar structure is provided at an upper end opening of the mounting hole. 7. A mounting member is provided which penetrates vertically through a connected body of unit molded bodies, and a receiving member which is in contact with a lower end portion of a columnar structure inserted into the mounting hole is attached to a lower end opening of the mounting hole. A foundation for the columnar structure according to any one of claims 4 to 6. 8. A unit molded body comprising a connected body of unit molded bodies divided into a plurality of parts in a vertical direction, a fixed plate for vertically mounting and fixing a columnar structure on an upper surface thereof and a reinforcing plate on a lower surface thereof. A unit molded body is provided between the fixed plate on the upper surface and the reinforcing plate on the lower surface by a connecting member provided with a through hole vertically penetrating the connecting body of the above and fitting the pipe into the through hole, and being inserted into the pipe. 4. The foundation of a columnar structure according to claim 3, wherein said connecting body is sandwiched and fixed. 9. The foundation of a columnar structure according to claim 8, wherein one and the other of the unit molded bodies joined to each other are provided with connecting portions which are fitted into and recessed from each other. 10. The base resin of the molded article is at least one selected from the group consisting of polystyrene, polypropylene, polyethylene, and polyurethane.
9. The foundation of the columnar structure according to any one of items 9. 11. The molded article comprises a foamed synthetic resin containing at least one reinforcing material selected from the group consisting of synthetic fibers, carbon fibers, inorganic fibers, metal fibers, and wood chips. The basis of the columnar structure described in Crab. 12. The pillar structure is a pole, a pole light, a bollard, a telephone pole, a traffic signal, a support of a display board or a billboard, a support of an approach light, a support of a fence, a support of a guardrail, a support of a post box, or a telephone. The foundation of a columnar structure according to any one of claims 3 to 11, which is a support of a box.