JP3141058B2 - Formwork device for pillar buried hole and method of constructing pillar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork apparatus for a pillar buried hole for forming a buried hole for erecting a pillar such as a veranda handrail in a concrete structure such as a floor slab of a building or a veranda. Pertaining to the construction method.

[0002]

2. Description of the Related Art Heretofore, in order to erect a pillar on a concrete structure, a formwork is installed in a pillar fixing base at the time of concrete casting to form a pillar embedding hole. Insert the lower end of the pillar into this pillar buried hole and fill the filler such as mortar and fix the pillar, but even after the filler hardens,
Since there is a possibility that the filler may fall out of the support hole together with the support, it is necessary to consider the inner surface of the support hole as an uneven surface to prevent biting with the support. For this reason, a technique called a sheath tube method is used, in which a metal anchor box with inner and outer walls having an uneven surface is buried in a pillar fixing base and the lower end of the pillar is fixed together with a filler such as mortar in the anchor box. (For example, 4-49
No. 3).

In recent years, Japanese Patent Laid-Open No. Hei 3-2289 discloses a technique for forming a pillar buried hole having an uneven inner wall surface in a pillar fixing base without embedding an anchor box in the pillar fixing base.
No. 66 (see FIG. 13) using an elastic core is considered.

[0004]

According to the prior art,
The one that buries the anchor box in the support base is
In long-term use, there is a problem in that the anchor box expands due to corrosion, and cracks are generated in the support base.

In the prior art shown in FIG. 13, a plurality of deformable rubbers 10 are stacked in a tapered cone shape, and these deformable rubbers 10 are sandwiched from above and below by a pressing plate 20 so that the side surfaces are formed in an uneven shape. Core 30
It is installed at the position where the pillar burial hole is formed when casting concrete,
After the concrete is hardened, the pressing plate 20 is loosened, the core is returned to the tapered cone shape, and the core is taken out from the support column fixing base 40. However, a tool or the like is required for tightening the pressing plate, If the concrete is hardened by adhering to it, it will not be easy to pull it out, and the rubber for deformation will be damaged at the time of pulling out, making it difficult to reuse,
There is a problem in workability and cost.

Further, according to the conventional method of constructing a column, after the concrete is hardened and the form is removed,
Until the pillars are buried, the pillar burial holes remain open, so that dirt and rainwater enter, and when burying the pillars, the burial holes need to be cleaned, reducing the work efficiency.

In such a situation, the present invention provides a method of burying an anchor box or the like in a support column fixing base.
Forming device for burying holes of pillars, preventing cracking of concrete base due to expansion of anchor box, and easy to remove from hardened pillar fixing base, and can be constructed at low cost, It is intended to provide a method of constructing the columns.

[0008]

In order to achieve the above-mentioned object, the present invention relates to a formwork apparatus for a pillar buried hole, wherein a pillar buried hole is formed in a pillar fixed base formed by casting concrete. A form material to be installed in the support column fixing base at the time of concrete casting, a surface material to cover an outer side surface and a lower surface of the form material, and an upper surface part of the form material
Cover and a support piece fixed to the base forming outer frame.
More becomes mounting plate formed integrally provided a flat facing surface of the outer surface of the form member, the surface member includes a plurality of hollow composed of an outer surface portion having a smooth inner surface and a plurality of projections The upper edge of the surface material is detachable at the upper end of the form material by forming a protruding part and having a flexible bottomed bag shape.
And the side surface of the lid is
It is configured to hang below the upper edge .

Further, at least the surface of the outer side surface of the form member is formed of an elastic material.

Further, the form material is formed of a form core material made of a hard material, and a form intermediate material made of an elastic material and covering an outer peripheral side surface of the form core. The material, and the mold intermediate material and the surface material are each configured to be detachable.

[0011] Further, the formwork material is formed of a formwork core material made of a hard material, and a formwork intermediate material made of an elastic material and covering an outer peripheral side surface of the formwork core material. projection is projected on the surface of the outer surface portion Rutotomoni longitudinal
The surface material is formed in a bag shape with a bottom by a flexible smooth sheet, and the surface material is deformed along the protrusion of the form intermediate material to form the surface material. The upper surface of the surface material is detachably covered, and the upper edge of the surface material is a mold intermediate material.
Is configured to be held at the upper end of the formwork core material .

In the method of constructing a pillar according to the present invention, a formwork device is installed at a position where a pillar burial hole is formed in a pillar fixing base at the time of concrete casting, and after the concrete is hardened, the formwork device is removed. In a method of forming a buried hole and inserting a lower end of a pillar into the pillar buried hole and embedding and fixing the pillar, the formwork device includes a formwork material installed in a pillar fixed base during concrete casting, and A bottomed bag-shaped surface material that covers the outer side surface and the lower surface of the frame material, a lid attached to the upper surface of the form material, and a base-forming mold.
More becomes mounting plate formed integrally provided on a support piece fixed to, Oyo said surface material after concrete curing
And removing only the mounting plate while leaving the form material in the support hole, and pulling the form material from the surface material when the support is buried.
Punching, then peel off the surface material from the inner surface of the burial hole
And forming a pillar buried hole .

[0013]

According to the above-structured formwork apparatus for supporting column buried holes, the formwork material is covered with the surface material.
There is no direct adhesion of concrete. In addition, since the projecting portion of the surface material is formed with a hollow part, the inner wall surface of the formed pillar burying hole is made uneven so as to increase the biting force of the filler fixed to the pillar, and furthermore, the hollow part has a buffering action Thereby, the pressure at the time of placing the concrete and the shrinkage force at the time of hardening are buffered, the adhesion between the form material and the surface material is reduced, and the work of pulling out the form material is facilitated.

Further, by forming at least the surface of the outer side surface portion of the form material with an elastic material, a buffer effect between the surface material and the form material can be further enhanced, and attachment and detachment can be made easier. .

Further, if the form material is formed from a form core material made of a hard material and a form intermediate material made of an elastic material, the strength of the form material can be increased by the form core material. Even if the resistance at the time of pulling out the material is large, it will not be damaged, and the elasticity of the intermediate material of the mold will absorb the compression force and can be easily pulled out. It can be easily removed due to the deformation and the interposition of the surface material, and the workability can be improved, the damage can be prevented, and the mold core material can be reused.

Further, if a protrusion is formed on the surface of the mold intermediate material and the surface material made of a flexible smooth sheet is covered, the inner wall surface of the support hole is formed by the shape of the protrusion of the mold intermediate material. Irregularities of a shape adapted to the working conditions can be easily formed.

According to the method of constructing a support post in the above-described process, even when the mounting plate is removed after the concrete is hardened, the surface material is left so as to cover the inner wall surface of the support hole, so that the support post is not covered. Even if dirt or rainwater enters, if the surface material is peeled off and pulled out from the support burial hole immediately before the support burial work, the dirt and rainwater that has entered the support burial hole can be removed together with the surface material, and cleaning work can be performed. Can be omitted.

[0018]

An embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a state in which an embodiment A of a column burying hole formwork device according to the present invention is installed in a column fixing base 1.
FIG. 2 is an exploded perspective view showing the configuration of the formwork device A of FIG. 1, and FIG. 3 is a diagram showing the base forming mold 2 and the formwork device A from the state of FIG.
FIGS. 4 and 5 show a modified example of the fixing means of the mounting plate 3 and the form member 4 after removing the mounting plate 3 of FIG. It is a partial expanded sectional view.

As shown in FIGS. 1 and 2, the form device A has both ends attached to a base forming form 2 for forming a column fixing base 1, and the form device A is connected to the base forming form 2. A mounting plate 3 supported between the mounting plate 3 and a frame member 4 having a truncated quadrangular pyramid shape attached to the lower surface of the mounting plate 3 via a fixing bolt 6 and a locking member 7; It is formed of a bottomed bag-shaped surface material 5 that is formed large and covers the outer side surface portion 41 and the lower surface portion 42 of the form material 4.

The mounting plate 3 is integrally formed by assembling a flat bar-shaped support piece 31 and a lid 32 with bolts 33. The support piece 31 is formed to have an appropriate length so that both ends thereof can be attached to the base-forming form 2. The base-forming form 2 has fasteners such as fasteners such as screws and nails or clamps. (Not shown) so as to be removably fixed, and a hole making process or the like is appropriately performed in accordance with the fixing means.

The lid 32 is a frame 3 forming a side surface.
4 is suspended from the lower surface to surround the periphery of the upper end of the form material 4 and the surface material 5 so that concrete does not adhere to the inside of the surface material 5 and the form material 4 at the time of placing concrete. . Further, a receiving portion 35 is formed at the center of the lower surface of the lid portion 32 for fitting and positioning a nut portion 71 projecting from the locking member 7. In FIG. 1 and FIG. 2, the lid 32 is formed by assembling a synthetic resin part 32a for integrally molding the frame part 34 and a metal plate part 32b fixed to the support piece 31 with bolts 36 in consideration of workability and strength. Although it is formed, it may be integrally formed of a hard synthetic resin or metal.

The form member 4 is formed in the shape of a truncated quadrangular pyramid whose cross section becomes smaller downward by styrofoam,
The body 43 is formed with a thickness that does not cause damage due to the pressure during concrete casting. The inside of the body 43 is hollow 4
4 so that the locking member 7 is inserted into the hollow portion 44 from the lower surface. An insertion opening 46 for the locking member 7 is formed in the upper surface portion 45 of the form member 4, and the claw 7 of the locking member 7 is formed.
An upper surface step 47 on which the locking member 2 is locked and a protruding wall 48 abutting on the bottom wall 73 of the locking tool 7 are formed, and the locking tool 7 inserted from the hollow portion 44 is elastically inserted into the insertion opening 46. To be engaged.

As shown in FIG. 6, the surface material 5 includes an inner sheet 5a forming a smooth inner surface 51 and a number of protrusions 53.
Is formed integrally with the outer sheet 5b forming the outer surface portion 52, and a so-called air packing material having a large number of hollow portions 54 on its surface is processed into a bottomed bag shape. When the surface material 5 is processed into a bag shape, it is desirable that the ear (not shown) of the welded portion of the sheet material does not protrude to the outer surface and is processed so as not to bite into the concrete.
Further, the material of the air packing material used for the surface material 5 is such that the inner sheet 5a is made of nylon having high lubricity to facilitate pulling out of the formwork material 4 and the outer sheet 5b is made of polyethylene which is hardly adhered to concrete. It is desirable to facilitate peeling.

The form device A is mounted by covering the surface material 5 from below with the form material 4 in which the locking member 7 is engaged with the insertion opening 46, and the form material 4 covered with the surface material 5. The cover 32 of the mounting plate 3 is covered so that the upper end is surrounded by the frame 34, the fixing bolt 6 is inserted through the insertion hole 37, and screwed into the nut 71 of the locking member 7 to be integrated with the frame member 4. . Then, the mold apparatus A is arranged on the base forming mold 2 assembled in a groove shape at the position where the support fixing base is formed, and both ends of the support piece 31 are fixed to the base forming mold 2 by appropriate means.

A construction procedure for erecting a support such as a veranda handrail using the formwork apparatus A mounted as described above will be described. As shown in FIG. 1, concrete is poured between the base-forming forms 2. Curing for a certain period of time to harden the concrete. After the concrete has hardened, the support pieces 31
Is removed from the base forming frame 2, the fixing bolt 6 is removed, and the mounting plate 3 is removed. Further, when the base forming mold 2 is removed, FIG.
As shown in (1), a column fixing base 1 having a column burying hole 11 is formed. Then, in this state, the form material 4 and the surface material 5 of the form device A are left in the support hole 11.

When the support is buried, first, the form material 4 is extracted from the support burying hole 11. At this time, the form member 4 can be easily pulled out with the surface member 5 interposed therebetween without being bonded to the concrete. Next, when the surface material 5 is peeled off from the inner wall surface of the support hole 11 and taken out,
The dirt and rainwater that have entered the bag-like surface material 5 are taken out together with the surface material 5, and the work of cleaning the inside of the support hole 11 can be omitted. The recesses 1 formed on the inner wall surface by the projections 53 of the surface material 5 are formed in the pillar burial holes 11 after the surface material 5 is taken out.
2 are formed in large numbers. In this state, as shown in FIG. 3B, the base of the support 8 such as a veranda handrail is inserted into the support burial hole 1.
1 and a jig (not shown), a filler 13 such as mortar or the like is filled in the column burial hole 11, the filler 13 is hardened, and the column 8 is embedded and fixed.

FIGS. 4 and 5 show the formwork apparatus A of the above embodiment.
5 shows an example in which the locking member 7 for connecting the form member 4 and the mounting plate 3 is modified. The locking member 7 shown in FIG. 4 has a hollow portion 44 in the form members 4, 4 divided into two vertically.
The bottom wall 73 is fitted and attached to the fitting groove 441 formed at the bottom. Then, the frame members 4 and 4 are adhered to each other with an adhesive material 9 such as a double-sided tape, and the
To form A nut portion 71 having a screw hole is provided in the locking member 7.
The height is formed so as to be substantially the same as or slightly lower than the upper surface portion 45 of the formwork member 4, so that the upper surface portion 45 is in close contact with the lid portion 32 of the mounting plate 3. In addition, an air vent hole 421 is formed in the lower surface portion 42 of the form material 4 to facilitate the removal of the form material 4 from the surface material 5.

Further, the mounting plate 3 shown in FIG. 4 is a modified example in which a metal plate is formed into a hat-shaped cross section, in which a support piece 31 and a lid 32 are integrally formed.
2, an insertion hole 37 for a fixing bolt 6 for fixing the form member 4 is formed. The support piece 31 is hung down
The frame member 4 is set at a position lower than the lid portion 32 via the side surface portion so that the upper side of the form member 4 projects above the upper surface of the support column fixing base 1. It is not necessary to form such as. In this case, the surface material 5 is formed to be shorter than the form material 4, and the upper open end thereof is adhered to the outer surface 41 of the form material 4 with an adhesive tape or the like (not shown). In the above-described step of removing the form member 4 when the pillar is buried, the form member 4 is removed from the surface member 5 by peeling off or cutting off the adhesive tape.

A description will now be given of a modification of the locking member 7 shown in FIG. 5. The locking member 7 is bonded and fixed to the upper surface 45 of the form member 4 with an adhesive material 9 such as a double-sided tape. It is formed by fixing a nut 75 to a substrate 74 made of a metal plate. A locking hole 76 is formed in the center of the substrate 74 so that when the form material 4 is pulled out, a pulling jig (not shown) that matches the locking hole 76 is locked and pulled out. I have. Further, step portions 49 are formed on two sides of the upper surface portion 45 of the formwork member 4, and together with the side wall 77 of the locking member 7, the displacement of the locking member 7 is prevented. Further, the upper surface portion 45
Has a storage hole 491 for the nut 75 and an air vent hole 492
Are formed.

FIGS. 7 and 8 show a formwork apparatus B according to another embodiment of the present invention. In the formwork apparatus B, the form material 4 is made of a hard synthetic resin material such as polypropylene. By using a molded product, the number of parts is reduced without using a special fastener, and the assembling work is simplified.

The mounting plate 3 is formed by shaping a metal plate into a hat-shaped cross section. A support piece 31 and a lid 32 are integrally formed, and the lid 32 is provided with fixing bolts for fixing the frame member 4. 6 is formed, and the support piece 31 is formed with an insertion hole 38 for a fixing bolt 61 to be fixed to the base forming frame 11. The support piece 31
When a fixing tool such as a clamp is used instead of a fixing bolt or the like in the fixing of, there is no need to form the insertion hole 38.

The form member 4 is formed of a hard synthetic resin in the shape of a truncated quadrangular pyramid having an upper opening, and is fixed to the lower surface of the mounting plate 3 around the opening 451 of the upper surface portion 45. The fixing flange 452 protrudes, and through two sides thereof, an insertion hole 453 for the fixing bolt 6 is formed. Further, the tapered outer surface portion 41 has a smooth surface to facilitate attachment and detachment of the surface material 5, and a hook 411 for hooking the surface material 5 protrudes above the surface material 5.
Further, a reinforcing rib 431 is formed on the inner surface of the body 43.

The surface material 5 is opened at two locations facing the hook holes 55 so as to be able to be hooked on the hooks 411 of the form material 4. Then, the surface material 5 is covered with the form material 4, the hook holes 55 are hooked on the hooks 411, and the mounting plate 3 is fixed, and is installed on the base forming mold 2 as shown in FIG. 7. At this time, the hook 411 and the hook hole 55
It is formed at a position above the finishing surface of the support column fixing base 1 so as not to be embedded in concrete.

FIGS. 9 and 10 show a formwork apparatus C according to still another embodiment of the present invention. In the formwork apparatus C, the form material 4 is molded from a hard synthetic resin such as polypropylene. Is formed by combining a mold core material 4a and a mold intermediate material 4b molded from an elastic material such as styrene foam. By combining the strength of the mold core material 4a and the buffer effect of the mold intermediate material 4b, , Corresponding to the pressure and shrinkage force during concrete placement,
To form a three-layer structure, so that the formwork core material 4a
And the frame intermediate member 4b are sequentially pulled out to facilitate removal of the frame member 4 from the support column fixing base 1. In addition,
Since the configurations of the mounting plate 3 and the surface material 5 are the same as those of the above-described formwork apparatus B, the same reference numerals are given to the drawings, and description thereof will be omitted.

The formwork core material 4a constituting the formwork material 4 of the formwork apparatus C has a fixed flange 452 and an insertion hole 453 formed on the upper surface 45 of the upper body 43a. The attachment plate 3 is attached, and a hook 411 for hooking the surface material 5 is provided on the side surface. A step 4 is provided below the upper trunk 43a.
32 having an insertion core 43 inserted into the mold intermediate member 4b
3 are formed. A projection 434 is formed on the surface of the insertion core 433 in the pulling-out direction, and
Insertion into and withdrawal from b is easy.

The mold intermediate member 4b is formed in a cylindrical body having an outer shape of approximately a truncated quadrangular pyramid, and has a hollow portion 44 large enough to insert the insertion core portion 433. Then, in assembling the form device C, the insertion core 4 of the form core material 4a is used.
33 is inserted into the hollow portion 44 of the intermediate mold member 4b,
Is assembled, and the surface material 5 is coated thereon,
Then, the mounting plate 3 is fixed to the upper surface 45 with the fixing bolts 6. In addition, the mold intermediate member 4b may be vertically divided into two parts and molded in addition to being formed into a cylindrical shape, so that attachment and detachment with the mold core member 4a and molding can be facilitated.

After the concrete of the column fixing base 1 is hardened, the formwork device C can be removed by first setting the base forming form 2
When the fixing bolt 61 between the mounting plate 3 and the mounting plate 3 is removed and the mounting plate 3 is lifted upward, the fixed formwork core material 4a is simultaneously pulled out. At this time, the hook hole 55 of the surface material 5 may be detached from the hook 411 in advance, or may be torn off at the time of removal. Further, when removing the form intermediate material 4b remaining in the support column fixing base 1, since the hollow portion 44 is largely open inside the form intermediate material 4b, it can be elastically deformed and easily taken out. Therefore, in the formwork apparatus C, the formwork core material 4a can be reused, and the construction cost can be reduced.

FIGS. 11 and 12 show a formwork apparatus D according to still another embodiment of the present invention.
In the above, a projection 412 is provided on the outer side surface portion 41 of the mold intermediate member 4b constituting the mold member 4, and the surface material 5 is formed of a smooth sheet 5d, so that the production of the surface material 5 is simplified. Thus, the manufacturing cost is reduced. Since the configurations of the mounting plate 3 and the mold core 4a are the same as those of the above-described mold apparatus C, the same reference numerals are given to the drawings and the description is omitted.

The mold intermediate member 4b constituting the mold member 4 of the mold apparatus D is formed of an elastic material such as styrene foam, and is vertically divided into two parts to facilitate removal from the support column fixing base 1. Have been. The mold intermediate member 4b forms a substantially quadrangular truncated pyramid cylindrical body in a state where the divided portions are combined, and a plurality of protrusions 4 are formed on an outer surface portion 41 thereof.
12 protrude integrally.

The surface material 5 of the formwork apparatus D is formed by processing a smooth sheet 5d having a smooth front and back surface into a bag with a bottom, and is preferably made of polyethylene which does not easily adhere to concrete. Is preferably about 40 μm so as to have sufficient flexibility and strength. Above the surface material 5, a hook hole 5 to be hooked on the hook 411 of the form core 4a.
5 are formed. Then, the surface material 5 formed in this way is coated on a form material 4 formed by combining a form core material 4a and a form intermediate material 4b, and is installed on the base forming form 2 via the mounting plate 3, When the concrete is cast, the surface material 5 having flexibility is deformed along with the protrusion 412 of the intermediate mold member 4b due to the pressure of the concrete, and becomes an uneven surface. When the mold intermediate member 4b is removed, the protrusion 412 is protruded, so that it cannot be pulled out upward as it is.
Since it is empty, it can be easily taken out while being deformed.

According to the formwork device D, since the surface material 5 is deformed in accordance with the protrusion 412 on the surface of the formwork intermediate material 4b, the shape and size of the concave portion 12 formed on the inner wall surface of the support hole 11 are formed. Can be freely selected depending on the shape of the projection 412,
It is possible to form the pillar burial hole 11 adapted to the construction conditions.

[0042]

Since the present invention is configured as described above, it has the following effects.

According to the apparatus for forming a pillar buried hole of the present invention,
By covering the form material with the surface material, concrete does not adhere to the form material, and many hollow protrusions are formed on the outer surface of the surface material, forming recesses in the pillar buried holes At the same time, the hollow portion buffers the press-fitting force with the form material, so that the form material can be easily pulled out from the pillar fixing base after the concrete is hardened, thereby improving workability.

Further, by forming at least the outer surface portion of the form material with an elastic material, the buffer effect of the press-bonded portion between the surface material and the form material can be further increased, and the attaching / detaching operation can be facilitated.

Further, the form material is formed of a mold material made of a hard material and a mold material made of an elastic material, and has a three-layer structure with a surface material. A formwork device that can exhibit the buffering effect of the material and can be reused without being damaged even if the pressure at the time of placing concrete, the contraction force at the time of hardening, and the resistance at the time of pulling out the formwork material are large. Can be provided.

Further, a protrusion is formed on the surface of the intermediate member of the form,
By covering with a surface material made of a smooth sheet, the surface material can freely adapt to various shapes and sizes of protrusions.

According to the method of constructing a pillar according to the present invention, the step of leaving the surface material on the inner wall surface of the pillar embedding hole after hardening of the concrete allows the pillar to be removed from the formwork until the pillar is erected. Even if the burial hole is left as it is, if the surface material is peeled off and removed from the burial hole immediately before the burial work, the dirt and rainwater that entered the burial hole can be removed at the same time, so cleaning Work can be omitted to improve work efficiency.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the formwork device of FIG. 1;

FIGS. 3A and 3B are explanatory views showing a construction process, in which FIG. 3A shows a state in which a base forming frame is removed, and FIG. 3B shows a state in which a support is buried.

FIG. 4 is an exploded perspective view showing a modified example of a fixture for a form member.

FIG. 5 is an exploded perspective view showing another modification of the fixture for the form material.

FIG. 6 is a sectional view showing a main part of the surface material.

FIG. 7 is a sectional view showing another embodiment of the present invention.

FIG. 8 is an exploded perspective view showing the formwork device of FIG. 7;

FIG. 9 is a sectional view showing another embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a form material of the form apparatus of FIG. 9;

FIG. 11 is a sectional view showing another embodiment of the present invention.

FIG. 12 is an exploded perspective view showing a form material of the form apparatus of FIG. 11;

FIG. 13 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 support fixing base 11 support burial hole 2 base forming form 3 mounting plate 4 form material 4 a form core 4 b form intermediate material 41 outer surface 412 protrusion 42 lower surface 5 surface material 5 d smooth sheet 51 inner surface 52 outer surface 53 Projecting part 54 Hollow part

Claims (5)

(57) [Claims] 1. A formwork apparatus for forming a pillar burial hole (11) in a pillar fixing base (1) formed by casting concrete,
Formwork material (4) to be installed in the support column fixing base (1) at the time of concrete casting, and a surface material (5) covering the outer side surface (41) and the lower surface (42) of the formwork material (4) A lid (32) attached to an upper surface (45) of the form material (4); and a base-forming outer frame.
A mounting plate (3) integrally provided with a support piece fixed to (2), and an outer surface (4) of the formwork (4).
The surface of (1) is a flat surface, and the surface material (5) has a plurality of hollow portions (54) including a smooth inner surface portion (51) and an outer surface portion (52) having a plurality of protrusions (53). It is formed in a bottomed bag shape having flexibility while projecting, and a surface material (5) is provided on the upper end of the formwork material (4 ).
The upper edge is detachably held, and the lid (32)
The side wall portion of the support member hangs downward from the upper edge of the surface material (5) . 2. The apparatus according to claim 1, wherein at least the surface of the outer side surface portion of the form member is made of an elastic material. 3. A core material for a formwork, wherein the formwork material (4) is made of a hard material.
(4a) and a mold intermediate material (4b) made of an elastic material and covering the outer peripheral side surface of the mold core (4a), and the mold core (4a)
And mold intermediate material (4b), and the mold intermediate material (4b) and surface material
(5) The formwork apparatus for supporting pillar buried holes according to claim 1, wherein each of the (5) is detachable. 4. A formwork device for forming a pillar burying hole (11) in a pillar fixing base (1) formed by casting concrete,
Formwork material (4) to be installed in the support column fixing base (1) when concrete is poured, and surface material (5) covering the outer side surface (41) and the lower surface (42) of the formwork material (4) A lid (32) attached to an upper surface (45) of the form material (4); and a base-forming mold.
And a support plate (3) integrally provided with a support piece (31) fixed to (2) , wherein the mold material (4) is a mold core material made of a hard material. (4a) and a mold intermediate material (4b) made of an elastic material and covering the outer peripheral side surface of the mold core material (4a), and is formed on the surface of the outer surface portion (41) of the mold intermediate material (4b). Is a protrusion
(412) dividable form of the can Rutotomoni longitudinally projecting
The surface material (5) is formed in a bottomed bag shape by a flexible smooth sheet (5d), and the surface material (5) is
It is deformed along the protrusion (412) of (4b) and is detachably covered on the formwork (4), and the upper edge of the surface material (5)
On top of the formwork core (4a) above the formwork intermediate (4b).
A formwork device for a pillar buried hole characterized by being held . 5. A pillar fixing base (1) when placing concrete.
A formwork device is installed at the position where the pillar burying hole (11) is formed, and after the concrete is hardened, the formwork device is removed to form a pillar burying hole (11). 8) In the method of constructing a pillar to be buried and fixed by inserting the lower end thereof, the formwork device includes a formwork material (4) which is installed in a pillar fixing base (1) at the time of placing concrete, and the formwork material (4). ) Outside surface
(41) and a bottomed bag-shaped surface material (5) covering the lower surface (42)
And a lid attached to the upper surface (45) of the form material (4).
(32) and the support piece (31) fixed to the base forming mold (2).
A step of removing only the mounting plate (3) while leaving the surface material (5) and the form material (4) in the support hole (11) after the concrete is hardened, comprising a mounting plate (3) provided physically. When the support is buried, the form material (4) is pulled from the surface material (5).
Then, peel off the surface material (5) from the inner surface of the support hole (11).
A method for constructing a pole, comprising the step of forming a pole burying hole (11) by separating them .