JP2004143751A - Method for installing balcony and positioning jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve workability and safety when a PC balcony is mounted on forms regarding a method for installing the balcony. <P>SOLUTION: A balcony positioning jig 1 is composed of: a base section 2 placed on the forms after slab forms and a support for the balcony are secured; a marking arm section 3 being slidably set up to the base section 2 in the horizontal direction and having a scale section given a size up to a front end section; and an abutting plate 4, which is fitted at the front end section of the arm section 3 and against which the end face of the balcony is abutted and positioned. The marking arm section is marked in conformity with specified return marking ink and positioned and fixed to the base section in the positioning jig, and a pair of the jigs are set at the required places of the slab forms at a proper interval. The PC balcony 11 is suspended obliquely by a crane so that the tail section of the balcony is positioned at a slightly lower place, and installed on the support, abutting the end face 11a of the tail section against the abutting plate 4. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a balcony installation method and a positioning jig, and more particularly, to a balcony installation method for improving workability and safety when a factory-made precast (hereinafter, PC) balcony is installed on a formwork. And positioning jig.
[0002]
[Prior art]
Conventionally, in a corridor, a condominium, or the like, in order to mainly install a PC balcony 11 in a RC building in a formwork, a conventional example (1); as shown in FIG. Similarly, the slab formwork 12a is provided, the balcony installation position is marked on the slab formwork 12a, and the PC balcony 11 is suspended and installed by a crane or the like. Conventional example {circle around (2)} As shown in FIG. 3 (B), the PC balcony 11 is directly suspended and directly received by the support 14 of the balcony receiver. A return ink is previously put on the slab formwork 12 on the conventional side, and the hanging work is performed while adjusting the access with the scale 15 or the like based on the return ink (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-2002-146900 (pages 2 to 3, FIG. 1, FIG. 7)
[0004]
[Problems to be solved by the invention]
However, in the above method of hanging a PC balcony, for example, in the conventional example (1), the number of slab formwork increases, the cost increases, the construction period also increases, and the external scaffold is further required, which increases the cost. There are issues. Further, in the conventional example (2), once the PC balcony is left in the support, it cannot be easily moved, so that the hanging is repeated a plurality of times, which is troublesome and requires a large number of workers. There is. The present invention has been proposed to solve such a problem.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the gist of the balcony installation method according to the present invention is to provide a base placed on a form after installing a slab form and a balcony support, and to be horizontally slidable on the base. A balcony provided with a graduation portion provided with a dimension up to a tip portion provided at a tip end thereof, and a hit plate provided at the tip portion of the bleeding arm portion and having a balcony end face abutting and positioned. A positioning jig is formed, and in the positioning jig, the inking arm portion is blacked out in accordance with a predetermined return black to fix the position with respect to the base. And set it in the required position of the slab formwork. Then, lift the PC balcony diagonally with the crane so that its tail is slightly below, and carry in the PC balcony. The end surface of is to place on the support while in contact with the contact plate.
[0006]
The gist of the positioning jig for a balcony according to the present invention is a marking arm having a base mounted on a formwork, and a scale portion provided on the base so as to be slidable in the horizontal direction and having a dimension up to a tip. And a contact plate provided at the tip end of the ink arm and positioned at the end of the balcony in contact with and positioned.
[0007]
An inclined guide portion is provided on an upper portion of the contact plate; a balancer for preventing a fall is provided on a rear end portion of the inking arm portion;
The base portion is provided with a horizontal anti-shake plate that engages a part of the formwork to prevent run-out in a horizontal plane;
Is included.
[0008]
According to the balcony installation method and the positioning jig according to the present invention, by extending the black arm from the return core by a predetermined distance by the positioning jig and setting it on the slab formwork, the entry / exit position of the PC balcony is obtained. Is set. By setting the PC balcony on the formwork while bringing the end surface of the PC balcony into contact with the contact plate of the positioning jig, the PC balcony can be reliably and quickly installed. In addition, the beam width dimension is calculated backward, the dimension of the beam from the inner formwork is determined, and a PC balcony can be similarly installed.
[0009]
In addition, by providing the guide portion on the hit plate, the work becomes a guide when the PC balcony lifted by the crane is dropped on the formwork, thereby improving workability. Furthermore, the stability of the positioning jig installed on the formwork is improved by the balancer for preventing overturning. The horizontal vibration preventing plate prevents the positioning jig from being twisted in the horizontal plane.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a balcony installation method according to the present invention and a balcony positioning jig 1 used therein will be described with reference to the drawings.
[0011]
As shown in FIG. 1, the balcony positioning jig 1 is inserted through a base 2 placed on a formwork such as a slab formwork and a through hole provided on an upper portion of the base 2 and slid in a horizontal direction. An ink arm 3 having a scale 3b freely provided and having a dimension up to the tip 3a on the side wall surface, and an end surface 11a of a balcony 11 provided at the tip 3a of the ink arm 3 (FIG. 2) (See FIG. 2) and the contact plate 4 which is positioned in contact with the contact plate 4.
[0012]
At an upper portion of the contact plate 4, a guide portion 4a inclined inward is provided. In addition, a balancer 5 for preventing overturning is provided at the rear end of the inking arm 3, a leveling device 6 is provided on the upper surface, and a rough surface for fixing screws is provided on one side wall surface. 7 is provided in the required range. The scale of the scale portion 3 b indicates the distance from the hit plate 4.
[0013]
The base 2 is provided with horizontal anti-vibration plates 8 on both left and right sides which engage with a part of the formwork to prevent runout in a horizontal plane. A fixed butterfly screw 9 for fixing the position of the ink arm 3 is provided on the side wall of the through hole at the upper part of the base 2. Further, a handle 10 is provided on the upper surface. The width of the base 2 is set to, for example, about 40 mm so as not to be obstructed by taking into consideration the arrangement interval of the reinforcing bars for securing the cover thickness of the beam or the like.
[0014]
The balcony positioning jig 1 is designed to be lightweight in order to facilitate handling, and is made of, for example, a lightweight material such as aluminum. In addition, a nail hole 3c may be provided at the rear end of the arm 3 in preparation for temporary nailing. The horizontal damping plate 8 has a left-right length of, for example, about 200 to 300 mm.
[0015]
A construction method when the PC balcony 11 is installed in, for example, an RC building using the balcony positioning jig 1 according to the present invention will be described. As shown in FIG. 2, the balcony positioning jig 1 is formed and prepared, the positioning jig 1 is placed on a slab form 12, and the base 2 is positioned on the beam form 13 by a horizontal vibration plate. Set together.
[0016]
In order to match the scale of the scale portion 3b with the returned black on the slab formwork 12, the black arm 3 is appropriately slid. Then, the fixed butterfly screw 9 is tightened to fix the position of the ink arm 3 to the base 2. Thus, the hit plate 4 is set in accordance with the color of the balcony.
[0017]
The balancer 5 does not need to be fixed, but in some cases, the balcony positioning jig 1 may be fixed by nailing the slab formwork 12 with the nail hole 3c. The horizontal accuracy of the formwork is checked by the leveling device 6.
[0018]
As described above, two balcony positioning jigs 1 are installed on both sides of one PC balcony 11 in the slab formwork 12. After that, the PC balcony 11 is lifted and carried by a crane diagonally so that the tail portion 11b is slightly lower as shown in FIG.
[0019]
And it hangs so that it may become a little beam side from a predetermined installation position. Then, the operator pushes the PC balcony 11 back slightly to bring the end surface 11a of the tail portion 11b into contact with the guide portion 4a. As a result, the center of gravity of the PC balcony 11 is shifted toward the beam side, so that the end face 11a of the tail portion 11b easily comes into contact with the guide portion 4a and the contact plate 4.
[0020]
In the left and right shifts, the PC balcony 11 is lowered while the end face 11a is in contact with the guide portion 4a of the hit plate 4 with a board having a joint width inserted. Since the PC balcony 11 is slightly inclined, its center of gravity is deviated toward the beam side, and the end surface 11a and the guide portion 4a and the contact plate 4 naturally come into contact with each other, and descend while maintaining this.
[0021]
In this way, the PC balcony 11 is set on the support 14 exactly once at a predetermined position (black ink for a balcony). In this operation, the worker pulling the balcony can be covered by one person except for the signer.
[0022]
【The invention's effect】
As described above, the balcony installation method and the positioning jig according to the present invention include a base placed on the form after the slab form and the balcony support are installed, and the base is slidable horizontally in the base. A balcony provided with a graduation portion provided with a dimension up to a tip portion provided at a tip end thereof, and a hit plate provided at the tip portion of the bleeding arm portion and having a balcony end face abutting and positioned. A positioning jig is formed, and in the positioning jig, the inking arm portion is blacked out in accordance with a predetermined return black to fix the position with respect to the base. , And set it in the required position of the slab formwork. Then, lift the PC balcony diagonally with the crane so that its tail is slightly below, and carry in the PC balcony. Since it is installed on the support while the end face of the part is in contact with the contact plate, an excellent effect that the PC balcony can be quickly and accurately installed at a predetermined position with a small number of workers is achieved. It is.
[0023]
A balcony positioning jig of the present invention includes a base placed on a formwork, a mark-out arm having a scale portion provided on the base slidably in a horizontal direction and having a dimension up to a tip end, The balcony can be quickly and accurately installed because it is provided with a hit plate which is provided at the tip of the inking arm and is positioned so that the balcony end face abuts.
[0024]
Since the inclined guide portion is provided on the upper portion of the contact plate, the work of descending the balcony is facilitated. In addition, since a balancer for preventing a fall is provided at the rear end of the ink-marking arm, it can be set stably. The base is provided with a horizontal vibration-preventing plate that engages with a part of the formwork to prevent run-out in a horizontal plane, so that the positioning jig shakes due to contact when the PC balcony descends. Work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a balcony positioning jig 1 according to the present invention.
FIG. 2 is an explanatory view showing a balcony installation method according to the present invention.
FIG. 3 is an explanatory diagram (A) according to Conventional Example (1) and an explanatory diagram (B) according to Conventional Example (2).
[Explanation of symbols]
1 balcony installation method and positioning jig, 2 bases,
3 Ink arm, 3a Tip,
3b scale, 4 per plate,
5 balancer, 6 level,
7 rough surface, 8 horizontal vibration plate,
9 fixed butterfly screw, 10 handle,
11 PC balcony,
12, 12a slab formwork, 13 beam formwork,
14 support, 15 scale.

Claims (5)

After installing the slab formwork and balcony support,
A base mounted on a mold, a marking arm provided with a scale slidably provided in the base in a horizontal direction and having a dimension up to a tip, and provided at a tip of the marking arm; And forming a balcony positioning jig composed of a hitting plate which is positioned by abutting the balcony end face, and performing the blackout of the blackout arm in accordance with a predetermined return black in the positioning jig. The position is fixed to the base, and the balcony positioning jig is set at a required position of the slab form at a suitable interval in a pair,
After that, lift the PC balcony diagonally with the crane so that its tail is slightly below, and carry it in.
Installing on the support while the end face of the tail portion is in contact with the contact plate,
A balcony installation method characterized by the following. A base mounted on a mold, a marking arm provided with a scale slidably provided in the base in a horizontal direction and having a dimension up to a tip, and provided at a tip of the marking arm; And the end plate of the balcony is positioned in contact with the end plate,
A balcony positioning jig. At the top of the contact plate, an inclined guide section is provided,
The balcony positioning jig according to claim 2, characterized in that: At the rear end of the inking arm, a balancer is provided to prevent falls,
The balcony positioning jig according to claim 2, characterized in that: The base is provided with a horizontal anti-shake plate that engages a part of the formwork to prevent run-out in a horizontal plane,
The balcony positioning jig according to claim 2, characterized in that:

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