JP2003082852A - Form holding fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form holding fixture which holds a form for integrally constructing a reinforced concrete continuous footing consisting of a base portion and a rise portion, can be set at the form without pouring leveling concrete, and holds the height of the form with high accuracy. SOLUTION: The form holding fixture 1 for holding the form K1 is formed of a substrate portion 2, a holding portion 3, and a height adjusting mechanism 4. The substrate portion 2 is fixed to a horizontal bar R1 of the continuous footing, which is built in at a predetermined location. The holding portion 3 holds the form K1. The height adjusting mechanism 4 adjusts the installation height of the holding portion 3. According to the form holding fixture, the holding portion 3 is mounted on the substrate portion 2 via the height adjusting mechanism 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form holder for holding a form for integrally constructing a reinforced concrete cloth foundation consisting of a base portion and a rising portion.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG. 4, a cloth foundation for a house consisting of a base portion B1 and a rising portion B2,
When integrally building with reinforced concrete, the formwork holders 21 and 31 installed on the discarded concrete S1 hold the formwork K1 of the upright B2 in the air and hold the concrete in this state. Install the base part B
1 and the rising part B2 were constructed integrally. Form holder 2
1 is a base portion 22 installed on the discarded concrete S1
And a holding portion 23 that is erected on the base portion 22 so as to be opposed to each other at a predetermined interval and that has a fitting portion 23a having a U-shaped cross-section into which the mold K1 is fitted, and a holding portion 23 that faces the holding portion 23. Is constituted by a width stop portion 24 that keeps a predetermined distance. Further, the mold holder 31 for holding the molds K1 and K2 of the rising portion B2 at the outermost periphery also has substantially the same configuration.

[0003]

However, in the case of using the conventional form holder, it is necessary to pour abandoned concrete in advance at each installation location in order to position and fix the form holder. Therefore, it has the following problems. Until the discarded concrete hardens to the specified strength,
Not only can the form holder be installed, but also the rebar assembly work cannot be done, leading to a longer construction period. In order to install the formwork in a state where the top end of the formwork does not have an inclination or a step with other formwork, it is necessary to accurately align the heights of the top ends of the discarded concrete, which is a great work It took labor and time.

Further, when the heights of the tops of the discarded concrete are not uniform, the installation heights of the holding portions of the form holders are also uneven, that is, the tops of the forms held by the holding parts are not uniform. Since the longitudinal direction of the formwork and a step with other formwork are generated, the top and bottom of the cloth foundation constructed by placing concrete in this state also has an inclination and a step, and the foundation is placed on the upper surface of the foundation. Occasionally, there was a problem that it could not be installed.

From this point of view, the present invention relates to a mold holder for holding a mold for integrally constructing a reinforced concrete cloth foundation consisting of a base portion and a rising portion,
It is an object of the present invention to provide a mold holder that can be installed without placing waste concrete for positioning and fixing, and that can also accurately hold the height of the mold.

[0006]

In order to solve the above-mentioned problems, the frame holder according to claim 1 is for integrally constructing a reinforced concrete cloth foundation comprising a base portion and a rising portion. A form holder for holding a form, a base part fixed to a reinforcing bar of the cloth foundation assembled at a predetermined position, a holding part for holding the form, and an installation height of the holding part. And a height adjusting mechanism for adjusting the height, and the holding unit is attached to the base unit via the height adjusting mechanism.

According to such a form holder, the base portion is positioned on the basis of the rebar of the cloth foundation assembled at a predetermined position and is fixed to this rebar, so that the waste concrete for positioning and fixing is discarded. There is no need to cast. Further, since the holding portion is attached to the base portion via the height adjusting mechanism, the installation height of the holding portion can be adjusted to a predetermined height even if there is an error in the installation height of the reinforcing bar. That is,
Since the installation heights of the holders of the mold holders arranged to hold the molds can be made uniform, the top end of the molds held by the holders can be tilted in the longitudinal direction and other molds can be installed. There is no step with the frame, and by placing concrete in this formwork, it is possible to construct a cloth foundation with no slope or step at the top.

The mold holder according to claim 2 is the same as claim 1.
In the frame holder according to the item (1), the height adjusting mechanism includes a threaded rod that is inserted into an insertion hole formed in the base body and stands upright, and a nut screwed to the threaded rod. It is characterized by

According to a third aspect of the present invention, in the mold holder according to the first aspect, the height adjusting mechanism is erected by being inserted into an insertion hole formed in the holding portion. It is characterized by comprising a threaded rod to be installed and a nut screwed to the threaded rod.

In the mold holder according to claim 2 or 3, the height adjusting mechanism is composed of simple members such as a screw rod and a nut, so that it is easy to handle and can be manufactured at low cost.

According to a fourth aspect of the present invention, there is provided a mold holder according to the first aspect.
The mold holder according to any one of claims 1 to 3, wherein a width stop member that holds a space between the holder and another mold installed facing the mold is hooked. It is characterized in that a hooking hole is formed.

According to this formwork holder, since the holding hole for holding the width stop member is formed in the holding portion of the formwork holder,
When holding a pair of molds facing each other with a pair of mold holders, the width of the width stop member can be set between the locking holes of the pair of mold holders to determine the lower width of the molds. Can be held in the width of.

According to a fifth aspect of the present invention, there is provided the frame holder according to the first aspect.
The mold holder according to any one of claims 1 to 4, wherein the holding portion includes a fitting portion having a U-shaped cross section into which the mold is fitted, and the fitting portion includes the cloth. It is characterized in that a recess is formed so that a portion exposed from the foundation can be broken off.

According to such a mold holder, even when the fitting portion is exposed from the cloth foundation when the construction of the cloth foundation is completed, this portion can be removed only by bending the concave portion. You can Therefore, when the holding portion is made of a steel member, it is possible to prevent the rust generated at this portion from reaching the inside of the concrete.

According to a sixth aspect of the present invention, there is provided a mold holder according to the first aspect.
The mold holder according to any one of claims 1 to 5, wherein at least one of the base portion, the holding portion, and the height adjusting mechanism is made of a hard resin material.

According to such a mold holder, since rust does not occur in a portion constructed of a hard resin material, a highly durable cloth foundation can be constructed. Also, because it is lighter than the mold holder made of metal material,
Easy to carry and handle.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The same elements will be denoted by the same reference symbols, without redundant description.

In the following embodiments, as shown in FIG. 1, among the cloth foundations of a house consisting of a base portion B1 and a rising portion B2, a damp-proof type in which the base portion B1 is constructed under the entire floor. Although the cloth foundation will be described as an example, the range of application of the mold holder according to the present invention is not limited to this, and may be a cloth foundation having an inverted T-shaped cross section. Further, even other structures are cloth foundations made of a reinforced concrete structure consisting of a base portion and a rising portion, and can be widely applied when constructing the base portion and the rising portion at the same time.

(First Embodiment) The mold holder 1 according to the first embodiment is preferably used when the mold K1 of the rising portion B2 is held in a state of being floated in the air (see FIG. 1). As shown in FIG. 2, the base portion 2 fixed to the horizontal stripe R1 of the base portion B1 assembled at a predetermined position.
And a height adjusting mechanism 4 including a holding portion 3 for holding the mold K1 and a screw rod 4a and a nut 4b screwed to the screw rod 4a.

The base portion 2 is, in this embodiment, a rod-shaped member 2.
c and the lower end of the rod-shaped member 2c protruding from the lower end of the horizontal stripe R1.
Plate having a reinforcing bar fixing portion 2a cut out in an inverted U-shape according to the diameter of the plate and a through hole that is horizontally projected from the rod member 2c and through which the screw rod 4a of the height adjusting mechanism 4 is inserted. And a mounting portion 2b made of a strip-shaped member.

The shape of the base portion 2 is not limited to the illustrated embodiment, but the mounting portion 2b may directly project from the reinforcing bar fixing portion 2a. Further, a plurality of reinforcing bar fixing portions 2a may be formed in accordance with the pitch of the horizontal reinforcing bar R1, and the base 2 may be bridged between the reinforcing bars to be fixed. Further, the reinforcing bar fixing portion 2a may have a role as a reinforcing bar spacer for ensuring the covering of the horizontal reinforcing bar R1. That is, the reinforcing bar spacer such as a donut is used as the reinforcing bar fixing portion 2a, and the mounting portion 2b is mounted on the reinforcing bar spacer. As a result, it is possible to save the labor of separately installing the reinforcing bar spacer, and thus the workability is improved.

In the present embodiment, the holding portion 3 is a fitting portion 3a made of a plate-like member formed in a U-shaped cross section in accordance with the thickness of the mold K1 and extending from the fitting portion 3a. Screw rod 4
and an attachment portion 3b rotatably attached to the upper end of a. Further, a hooking hole 3c for hooking the width stop member 5 is formed in the mounting portion 3b. Furthermore, a recess 3d is formed on the side surface of the fitting portion 3a.

The shape of the holding portion 3 is not limited to the illustrated embodiment, but the holding portion 3 may be rotatably attached to the lower end of the screw rod 4a, for example.

Base portion 2, holding portion 3 and height adjusting mechanism 4
Is preferably made of a hard resin material or the like. If a hard resin material is used, rust does not occur, so the durability of concrete can be improved. It may also be made of a metal material such as iron or aluminum. When a metal material is used, the metal plate may be formed into the above-mentioned shape by press forming, welding, or the like, or an extruded shape member formed in advance into a predetermined shape may be used.

The height adjusting mechanism 4 has its upper end rotatably attached to the attaching portion 3b of the holding portion 3 and the base portion 2
It is constituted by a screw rod 4a which is inserted into an insertion hole formed in the mounting portion 2b and stands upright, and a nut 4b whose upper portion is rotatably mounted on the mounting portion 2 and which is screwed into the screw rod 4a.

(Second Embodiment) As shown in FIG. 1, the mold holder 11 according to the second embodiment is suitable for holding a mold K2 outside the outermost rising portion B2. Yes, as shown in FIG. 3, the rising part B assembled in place
The main body 12 is fixed to the two main bars R2, the holding portion 13 that holds the mold K2, and the height adjusting mechanism 14 that includes the screw rod 14a and the nut 14b screwed to the screw rod 14a.

The base 12 is, in this embodiment, a form K.
A first rod-shaped member 12c which also serves as a width stopping member for K1 and K2,
A reinforcing bar fixing portion 12a protruding from the lower surface of the first rod-shaped member 12c and having a lower end cut out in an inverted U shape in accordance with the diameter of the main bar R2, and a lower end of the screw rod 14a of the height adjusting mechanism 14 are fixed. And a second rod-shaped member 12 whose lower end is fixed to the mounting portion 12b and whose upper end is inserted through an insertion hole provided in the first rod-shaped member 12c in a height-adjustable manner.
It consists of d and. Note that the mounting portion 12b is placed on the split stone S2 that has been laid and rolled (see FIG. 1).

The base portion 12 is the same as in the first embodiment.
The shape and the like can be changed as appropriate. Further, the reinforcing bar fixing portion 12a may have a role as a reinforcing bar spacer for ensuring the covering of the main bar R2. That is, a reinforcing bar spacer such as a donut is used as the reinforcing bar fixing portion 12a. As a result, it is possible to save the labor of separately installing the reinforcing bar spacer, and thus workability is improved. Further, the reinforcing bar fixing portion 12
a is not only the main muscle R2 but also the horizontal muscle R1 and the standing muscle R3
(See FIG. 1).

The holding portion 13 is, in this embodiment, a form K2.
Of the plate-shaped member having a U-shaped cross-section in accordance with the thickness of the above, and a mounting portion 13b of the plate-shaped member rotatably mounted on the nut 14b. In addition, on the side surface of the fitting portion 13a, the concave stripe 13d
Are formed.

The height adjusting mechanism 14 is inserted into an insertion hole formed in the mounting portion 13b of the holding portion 13 to stand upright, and a lower end portion thereof is fixed to the mounting portion 12b of the base portion 12 and a screw rod 14a. The nut 14b is rotatably attached to the holding portion 13 and is screwed into the threaded rod 14a.

Next, the mold holders 1 according to the first embodiment and the mold holder 11 according to the second embodiment configured as described above move the molds K1 and K2 to predetermined positions. The procedure of installation will be described below, and the operation of each component of the mold holders 1 and 11 will be described.

As shown in FIG. 1, the mold holders 1,
Since 11 is fixed to each rebar of the cloth foundation assembled in advance at a predetermined position, in the following, each rebar of the cloth foundation is placed at a predetermined position on the split stone S2 that has been spread and leveled. Shall be assembled. That is, the horizontal stripes R1 are assembled in the base portion B1 in a grid pattern,
The rising portion B2 is assembled with a main reinforcement R2 arranged horizontally along the longitudinal direction and a rising reinforcement R3 arranged perpendicularly to the main reinforcement R2.

The formwork holder 1 is fixed at a predetermined position by fitting the reinforcing bar fixing portion 2a of the base 2 into the horizontal line R1 at an appropriate position on the horizontal line R1. Although illustration is omitted, the base body portion 2 is tightly connected by a tie wire as necessary so as not to move during the formwork installation work or the concrete placing work, or if the base body portion 2 is made of steel. Secure by welding. In addition, a bolt is inserted into a portion of the reinforcing bar fixing portion 2a projecting below the horizontal reinforcing bar R1, and the bolt is tightened to narrow the lower end of the reinforcing bar fixing section 2a so that the horizontal reinforcing bar R1 is clamped. Good. These may be appropriately changed in consideration of the weight of the mold K1 to be held by the mold holder 1.

Next, the nut 4b screwed into the screw rod 4a is rotated to adjust the holding portion 3 to a predetermined height position. Further, since the holding portion 3 is rotatably attached to the upper end of the screw rod 4a, the holding portion 3 is attached to the screw rod 4a.
By rotating about the axis of a, the fitting portion 3a of the holding portion 3
Can be matched as in the form K1.

After that, an appropriate number of mold holders 1 are installed at the positions where the mold K1 is installed, and the height of the holder 3 is adjusted. When the installation of the mold holder 1 is completed, the lower end of the mold K1 is fitted into the fitting portion 3a of the holder 3 to install the mold K1.

Similarly, the frame holder 11 is fixed at a predetermined position by fitting the reinforcing bar fixing portion 12a of the base portion 12 at an appropriate position of the main bar R2. The mold holder 11
Then, the mounting portion 12b is placed on the split stone S2,
The holding part 13 is supported by this, but the planar position of the mounting part 12b is determined by fitting the reinforcing bar fixing part 12a into an appropriate position of the main bar R2. That is, the reinforcing bar fixing portion 12a
Is fixed to an appropriate position of the main bar R2, the first rod-shaped member 12c is fixed to a predetermined position, and the first rod-shaped member 12c is fixed.
The second rod-shaped member 12d attached to the mounting portion 1
The installation position of 2b is determined. In addition, the first rod-shaped member 12
The distance between c and the split stone S2 is not always constant, but the second
Since the rod-shaped member 12d is attached to the first rod-shaped member 12c in a height-adjustable manner, the attachment portion 12b attached to the second rod-shaped member 12d can be always installed on the split stone S2.

Although not shown in the drawing, as in the case of the mold holder 1, the base portion 12 is provided with a numbered line as necessary so as not to move during the mold setting work or the concrete placing work. It is tightly bonded or welded if the base 12 is made of steel. In addition, a bolt is inserted into a portion of the reinforcing bar fixing portion 12a that protrudes below the main reinforcing bar R2, and the bolt is tightened to narrow the lower end of the reinforcing bar fixing portion 12a.
You may fix so that it may pinch.

Further, in order to install the formwork holder 11 in a more stable state, discarded concrete may be placed on the split stone S2, but the formwork holder 11 has a height adjusting mechanism 1
Since 4 is provided, it is not necessary to strictly align the heights of the top surfaces of the discarded concrete, and the construction management as with the discarded concrete that is placed when installing the conventional form holder is not required. Alternatively, a nail hole may be formed in the mounting portion 12b, and the nail may be nailed to be fixed to the concrete.

Next, the nut 14b to which the holding part 13 is attached is rotated to adjust the holding part 13 to a predetermined height position. After the holding portion 13 has a predetermined height, the holding portion 13 is rotated around the axis of the screw rod 14a, and the fitting portion 13a of the holding portion 13 is aligned with the mold K2.

After that, an appropriate number of mold holders 11 are installed at the installation positions of the mold K2, and the heights of the holders 13 are adjusted. When the installation of the mold holder 11 is completed, the holder 1
3, the lower end of the mold K2 is fitted into the fitting portion 13a
Install 2.

The molds K1 and K2 may be of a type that is removed from the mold after the concrete is hardened, or may be a discard mold that is not removed.

When the molds K1 and K1 are arranged to face each other, the width stop member 5 is bridged between the hooking holes 3c and 3c of the mold holders 1 and 1 installed adjacent to each other. , Formwork K
The lower width of 1, K1 may be retained.

In addition, after the separator K3, the width stop member K4, the anchor bolts K5 for fixing the base, etc. are properly installed, concrete is simultaneously placed on the base B1 and the rising part B2 in the same manner as in the conventional form installation work. To do.

After the concrete is poured, the fitting portions 3a,
Even when 13a is exposed from concrete, the recesses 3d,
Since 13d are formed respectively, the recessed stripes 3d, 13
This part can be removed simply by bending at the position of d. Therefore, when the holding portions 3 and 13 are made of steel members, it is possible to prevent the rust generated in the holding portions 3 and 13 from reaching the inside of the concrete.

As described above, according to the mold holders 1 and 11, the base members 2 and 12 are assembled at predetermined positions and positioned and fixed on the basis of the reinforcing bars.
It is not necessary to cast waste concrete for positioning and fixing 11. Therefore, it is possible to save the trouble of placing waste concrete and the time required for curing,
Labor saving and shortening of construction period can be achieved.

Further, since the holding parts 3 and 13 are attached to the base parts 2 and 12 via the height adjusting mechanisms 4 and 14, respectively, the installation heights should be the same as the holding parts of other formwork holders. It is possible to install the molds K1 and K2 at the top end thereof without causing an inclination or a step with another mold.
Therefore, since a cloth foundation having no slope or step is constructed at the top end, if a member such as a base is to be installed on the cloth foundation, the mounting is sure and easy.

Further, since the height adjusting mechanisms 4 and 14 are composed of the screw rods 4a and 14a and the nuts 4b and 14b, the structure is very simple, the construction is easy, and the cost is low. can do.

[0048]

Since the formwork holder according to the present invention is configured to be fixed to the rebar assembled at a predetermined position, it is not necessary to use waste concrete for positioning or fixing the formwork holder. It is possible to reduce the construction period and the construction cost.

Further, since the installation height of the holding portion for holding the mold can be adjusted by the height adjusting mechanism, the mold can be adjusted in a state where there is no inclination at its top end or a step with other molds. Can be installed. That is, since it is possible to construct a cloth foundation without an inclination or a step at the top end, if a member such as a base is installed on the cloth foundation, its attachment is sure and easy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a mold holder is held by a mold holder of the present invention.

FIG. 2 is a perspective view of a mold holder according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a mold holding tool according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a state in which a mold is held by a conventional mold holder.

[Explanation of symbols]

1,11 Form holder 2,12 Base part 3,13 Holding part 4,14 Height adjustment mechanism 5 width stop member 2a, 12a Reinforcing bar fixing part 2b, 12b mounting part 12c First rod-shaped member 12d second rod-shaped member 3a, 13a Fitting part 3b, 13b mounting part 3c Hook hole 3d, 13d concave line R1, R2, R3 rebar K1, K2 formwork B1 base B2 rising S1 Abandoned concrete S2 split stone

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Claims (6)

[Claims] 1. A formwork holder for holding a formwork for integrally constructing a reinforced concrete fabric base consisting of a base portion and a rising portion, wherein the rebar of the fabric base is assembled at a predetermined position. A base part fixed to the holding part, a holding part for holding the mold, and a height adjusting mechanism for adjusting the installation height of the holding part. The holding part is provided with the height adjusting mechanism. A form holder, which is attached to a base portion. 2. The height adjusting mechanism is configured by a screw rod that is inserted into an insertion hole formed in the base body and stands upright, and a nut that is screwed into the screw rod. The mold holder according to claim 1. 3. The height adjusting mechanism is configured by a screw rod that is inserted into an insertion hole formed in the holding portion and stands upright, and a nut that is screwed into the screw rod. The mold holder according to claim 1. 4. The retaining portion is formed with a retaining hole into which a width retaining member that retains a space between the retaining member and another form frame that faces the form frame is retained. The mold holder according to any one of claims 1 to 3. 5. The holding section has a fitting section having a U-shaped cross section into which the mold is fitted, and the fitting section has a recessed line that allows a portion exposed from the cloth foundation to be broken off. 2. The structure according to claim 1, wherein
The mold holder according to claim 4. 6. The method according to claim 1, wherein at least one of the base portion, the holding portion, and the height adjusting mechanism is made of a hard resin material. Formwork holder.