JP2001214511A - Light-weight driven column form with column hoop - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the work needed to install timbering for inhibiting deformation of a driven column form caused by lateral pressure during concrete placement, the work needed to set the driven column form, and the work needed to interconnect steel-plate driven forms. SOLUTION: This driven column form comprises form panels 5 formed in thin panels made of one of metal, resin or fiber, latticed column tie hoop receiving members 7 each having outer peripheral side faces which can be connected to column tie hoops 2 and bonded to the form panels 5, and fiber sheets or folded steel plates 15 for reinforcing the corners of the column form. During formation of the driven column form, a multiplicity of latticed column tie hoop receiving members 7 with the column tie hoops 2 attached thereto are arranged at predetermined intervals to one another (minimum 3 cm and maximum 10 cm) along the axis of the column form inside the column form, and the outer peripheral side faces of the column tie hoop receiving members 7 are bonded to the panel surfaces of the form by use of a resin adhesive 6 to facilitate connection between the form panels at the corners of the form panels. Since the latticed column tie hoop receiving members 7 inhibit deformation of the form by the lateral pressure of concrete placed, the work needed for installing the timbering is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a concrete driving form for placing concrete in a reinforced concrete column.

[0002]

2. Description of the Related Art In order to increase the productivity at a construction site, in order to simplify the erection and support of a formwork, a thin-wall concrete formwork, a steel plate form, and a resin-type formwork have been proposed. I have.

[0003]

However, there is a problem in that the thin concrete driving formwork is relatively heavy and easily damaged, so that it is difficult to transport it to the site over a long distance.

The conventionally proposed steel plate driving form has a problem that it takes time and effort to weld or mechanically connect a thin steel plate form at a construction site.

[0005] In the case of a resin-based driving form, a method using a shoring and a method of suppressing deformation of the form inside the form have been proposed in order to suppress deformation of the form. However, a significant labor saving cannot be expected with the method using the shoring. Also,
In the method of suppressing the deformation of the formwork inside the formwork devised conventionally, the work of assembling the driven column formwork at the construction site is complicated due to the balance between the deformation suppressing member provided inside the column formwork and the column stirrup. It does not lead to labor saving at the construction site.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the construction of the driving formwork according to the present invention is connected to a formwork plate made of a metal, resin, or fiber-based thin plate, and a columnar bar. It is assumed that it is formed of a lattice-shaped column-shaped bar receiving member having an outer peripheral side that is capable of being bonded to the form plate, and a fiber sheet or a folded steel plate that reinforces a corner portion of the column form.

[0007] Since the metal, resin, or fiber-based thin plate is used as the form plate, the weight of the column form is reduced as compared with the conventional thin concrete-filled column form, so that it can be easily carried into the site.

When the column form is formed by using the above-mentioned form plate, a lattice-shaped column streak receiving member having a column streak attached inside the column form is provided at a predetermined interval in the axial direction of the column form. (Minimum 3cm,
A large number of them are arranged at a maximum of 10 cm) and adhered to the outer peripheral side surface of the columnar band receiving member, the mold plate surface and the resin-based adhesive, thereby facilitating the joining between the form plates at the corners of the column form.

During the process of forming the driving form of the present invention,
Because the column stirrups fit inside the driven column form using the column stirrup receiving member, the column formwork for the column length is integrated before being carried into the construction site, and the mold at the construction site The frame assembling work can be largely omitted compared to the conventionally designed driving column formwork.

[0010] When a fiber sheet or a folded steel sheet is attached to the outside of the corner of the column form to reinforce the corner of the form, the integration of the driven column form becomes higher.

[0011] When both the column reinforcement member and the form plate are made of a resin material, the form cylinder portion (the minimum length of the cylinder portion is 3 cm and the maximum length is 10 cm) serving as a concrete form is formed on the outer periphery of the column reinforcement member. A column form unit unit is integrally formed so as to be attached to the portion, and a connection hole is provided at a crossing point of an outer peripheral portion of the lattice-shaped column-shaped bar receiving portion, and a connection protrusion is provided on the thin tube portion. After fixing the column stirrups to the formed column stirrup receiving portion and stacking the column form unit units in the column axis direction by the provided holes and projections, the fiber sheet or folded steel plate is applied to the corners of the column form. A lightly driven pillar formwork with a column stirrup, which is attached with a resin-based adhesive and reinforced in the axial direction of the formwork, also has the above-described workability.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings.

[0013]

Embodiments of the present invention will be described below.

FIG. 1 shows a first embodiment of the present invention. FIG.
(A) is a figure showing the formwork assembling method of Example 1. FIG. 1B is a vertical sectional view of the driving formwork of the first embodiment. FIG. 1C is a plan sectional view of the driving formwork of the first embodiment. As shown in FIG. 1A, the column formwork assembling work base 1 is arranged so as to coincide with the angle of one corner of the column. Two form plates 5 are placed on the work base 1. FIG. 1 (D)
As shown in the figure, the column stirrup 2 is fixed to the columnar streak receiving member 7 formed in a lattice shape by the binding wires 8. A resin-based adhesive material 6 is applied to both sides adjacent to the outer periphery of the lattice-shaped column stirrup receiving member 7 to which the column stirrups are fixed, and is adhered to the two form plates 5 placed on the work base 1. The column reinforcements 7 to which the column reinforcements 2 are fixed are sequentially bonded at predetermined intervals (minimum 3 cm, maximum 10 cm) in the axial direction of the column formwork. After bonding all the column reinforcements 7 for the column form to the two form plates 5, a resin adhesive 6 is applied to the remaining outer peripheral sides of all the column reinforcements 7. Then, the other two form plates 5 are adhered to the column band reinforcing members 7 arranged in a line in the column form axis direction. After the resin-based adhesive 6 has hardened, the column form formed as described above is erected, and a fiber sheet or a folded steel sheet is bonded to the corners of the column form and reinforced.

In the first embodiment, the columnar band receiving member 7 may have various shapes as shown in FIG. In addition, the number of lattices of the column stirrup receiving member is determined by the size of the column formwork. Although the column stirrups in the figure are of the welded closed type, column stirrups with hooks can be used in the same manner.

FIG. 3 shows a second embodiment of the present invention. FIG.
(A) is a sectional view showing a column form unit unit formed integrally with a column streak receiving portion and a tubular portion of Example 2. FIG.
(B) is an elevational view showing a method of assembling the column formwork using the column formwork unit unit of Example 2. FIG. 3C is a plan cross-sectional view of the driving column formwork with a column streak according to the second embodiment.
A column form unit unit 10 having a column-shaped reinforcement receiving part 11 and a form tube part 12 (the form part tube length is a minimum of 3 cm and a maximum of 10 cm) shown in FIG. A connection hole 13 is formed in the column-strip reinforcement receiving portion 11 of the formwork unit 10;
A connection projection is provided on the mold tube portion. After fixing the column stirrup 2 to the column form unit 10 and stacking it to a predetermined length in the column axis direction by the holes 13 and the projections 14 as shown in FIG. Folded steel plate 15 is formed by resin-based adhesive material 6 for column form unit 1 for the column length.
0 are integrated to form a driven pillar formwork with a pillar strip. FIG. 3C is a plan sectional view of the driving column formwork with the column stirrup formed as described above.

In the second embodiment, the columnar strut receiving portion 11 can be of various shapes shown in FIG.

[0018]

According to the present invention having the above-described structure, the column formwork is lightweight and can be easily transported to the site. Since the out-of-plane deformation of the formwork is suppressed by the column-bar reinforcement receiving member in the formwork, the support work can be greatly reduced at the time of placing the column concrete in comparison with the conventional method. Since it is a driven formwork, there is no need to remove it.

[0019]

[Brief description of the drawings]

FIG. 1 is a view showing a configuration and an assembling method of a driving column formwork of Example 1 of the present invention.

FIG. 2 is a view showing an example of the shape of a column-band reinforcing member used in the first embodiment.

FIG. 3 is a view showing a configuration and an assembling method of a driving column formwork of Example 2 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Column formwork assembling base 2 ... Column strap 3 ... Wire mesh 4 ... Metal rod or metal piece having a fixing end 5 ... Form plate 6 ... Resin-based bonding Agent 7 ・ ・ ・ Column strap receiving member 8 ・ ・ ・ Bundling wire 9 ・ ・ ・ Column strap reinforcing member intersection reinforcement part 10 ・ ・ ・ Column frame unit unit 11 ・ ・ ・ Column strap receiving part 12 ・ ・ ・Form tube portion 13 ... Hole for connecting column form unit 14 ... Projection for connecting column form unit 15 ... Fiber sheet or folded steel plate for column form reinforcement 16 ... Connect to column Notch for passing main beam reinforcement

Claims (9)

[Claims] The present invention is characterized in that a column stirrup is fixed to a columnar streak receiving member formed in a lattice shape by a binding wire, and then the columnar streak receiving member is fixed at predetermined intervals (minimum 3 cm, maximum 10 cm) in the column axis direction. It is placed, and a thin metal or resin or fiber-based almost flat plate that forms a concrete form is bonded to the outer peripheral side surface of the column-bar reinforcement member with a resin-based adhesive to be integrated, and stands on the work floor at the construction site. Light-duty cast-in column formwork with column stirrups that can be dropped into the braided bar with only the column main bars installed. There is no need to make a separator hole in the thin plate that will be the concrete formwork in the driven pillar formwork, and there is no need to embed a jig,
It has both the feature of omitting the time and effort of assembling the conventionally designed discarded formwork in the column axis direction at the construction site, and the feature of facilitating the connecting method between the formwork plates at the corners of the column formwork. 2. In order to improve the bonding performance between the buckle reinforcement member and the form plate, the grid intersections of the buckle reinforcement member are reinforced, and the reinforcing portion is also used as a positioning spacer for the buckle reinforcement at the same time. The lightweight driving column formwork with a column stirrup according to claim 1 using a band streak receiving member. 3. A strut support member comprising a wire mesh embedded in the lattice axis of the strut-type strut support member according to claim 1 or 2 to reinforce the axial rigidity of the portion. 2. A lightly driven pillar formwork with column stirrups according to claim 1. 4. A metal rod or metal piece having a fixing end is buried in a part or all of the lattice shafts of the lattice-shaped column-bar reinforcement member according to claim 1 or 2 in order to reinforce the shaft rigidity. 2. The lightly driven pillar formwork with column stirrups according to claim 1, wherein said column streak receiving member is formed. 5. A column-shaped bar receiving member which is a metal rod or a metal piece having a fixing end, except for the outer peripheral portion and the intersection reinforcing portion of the lattice-shaped column-shaped bar receiving member shown in claim 2. Light-duty pillar formwork with column stirrups. 6. A column bar receiving member formed by burying a core bar of a column bar in a column bar receiving member instead of a metal rod or a metal piece having a fixing end according to claim 5. 2. The lightly driven column formwork with column stirrups according to claim 1. 7. A thin plate having a groove for improving the bonding performance between the thin plate and the column-bar reinforcing member is used as the thin plate serving as a concrete formwork according to any one of claims 1 to 6. Light-duty pillar formwork with column stirrups. 8. A joint between the form plates is reinforced by bonding a fiber sheet or a folded steel plate with a resin-based adhesive outside the corners of the column form forms as set forth in claims 1 to 7. Lightly driven column formwork with column stirrups. 9. In the case where both the column-bar reinforcement member and the form plate according to claim 1 are made of a resin material, a form tube part (a tube part having a minimum length of 3 cm, serving as a concrete form) is formed. Up to 10
cm) is attached integrally to the outer periphery of the columnar band receiving member, and a connection hole and a thin plate cylinder are formed at the intersection of the outer peripheral portion of the lattice-shaped columnar band receiving portion. Are provided with connecting projections. The column stirrups are fixed to the column stirrup receiving portion, and the column form unit units are stacked in the column axis direction by the provided holes and protrusions. When the column form becomes a predetermined length, the fiber sheet or the folding is performed. A lightly driven column form with column stirrups in which a steel plate is adhered to the corners of the column form with a resin-based adhesive and reinforced in the axial direction of the column form.