JP2670732B2 - Floor concrete placement method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor concrete separating method capable of separately separating floor concrete and concrete such as beams in the construction of a reinforced concrete structure.

[0002]

2. Description of the Related Art In reinforced concrete construction, since concrete is generally placed on one floor at a time, concrete of columns, beams, walls and floors is of the same type (same strength).

Even when the horizontal and vertical members are separately cast, the vertical member portion (panel zone) to which the beam component is applied.
Since it is difficult to separate the timber with the horizontal timber, it is inevitable that the first floor will have the same strength.

However, when the strength of concrete is dramatically increased, the workability of the concrete is different from the conventional one, and the viscosity is generally high, and the workability is unfavorable as concrete for floor members. Become.

On the other hand, since the floor member bears the load corresponding to the number of floors, the strength does not depend on the number of floors of the building. This can be understood from the fact that, even when the half PCa plate is used as the floor plate, the concrete strength of the half PCa plate does not necessarily have to be the same as that of the concrete of the pillar or the beam.

Although a method of driving such a floor member into concrete of a beam / column member has never been carried out, when attempting to do this, conventionally, a material used for temporarily fixing concrete to another portion is used. Will be done. As these materials, there are a wire mesh such as rib lath and an air bag (a bar-shaped bag by air pressure).

[0007]

However, in the case of a rib lath, it is troublesome to stretch the rib lath, and it takes a lot of time and labor to penetrate the floor slab muscle. Further, in the case of an air bag, a large amount of concrete debris is produced after the air bag is removed, and cleaning of the concrete debris requires a great deal of labor. Therefore, there is a difficulty in realization in any case.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to easily install a weir plate for splicing, and to easily insert the slab anchoring muscle into this weir plate, thereby making it possible to remove the floor slab muscle. A penetration state can be obtained, and the top end of the damping board can be used as a level ruler for beam / floor concrete.On the other hand, concrete with different properties can be cast at the damping board. Yes, for example, use only high-strength concrete to be cast on the beam, and use ordinary concrete for the floor with a larger volume than this, so that significant cost reduction can be achieved. An object of the present invention is to provide a method for placing floor concrete, which is highly integrated even if different concretes are used.

[0009]

Means for Solving the Problems In order to achieve the above object, the present invention provides a method of joining a beam form and a floor form, and placing concrete in the beam form and on the floor form.
On the floor formwork, a horizontal flange for nailing is provided at the lower end on the boundary line with the beam formwork, and a damming plate for joining having reinforcing bar through holes is raised above the left and right beam formworks, A slab anchoring bar having a length that straddles the beam part through the reinforcing bar through-hole is passed through so as to extend between the opposing cuffs, and the end of the slab anchoring bar is wrapped around the upper slab bar. Arrange the
Placing concrete with different properties on the border of the weir, or, in addition to this configuration, a weir for jointing,
The gist is that a bulge portion for a cotter having a concave portion on the opposite side is formed.

[0010]

According to the first aspect of the present invention, the damping plate for the joint can be easily formed on the boundary between the beam form and the floor form only by nailing the lower horizontal flange to the floor form. Can be installed in this way, after raising the cough plate above the left and right beam formwork in this way,
A slab anchorage having a length that straddles the beam portion through the reinforcing bar through-hole is pierced so as to hang it over the opposing dams, and the end of the slab anchorage is wrapped around the slab upper bar. Since the slab anchoring bars allow the floor slab reinforcing bars to exhibit continuity in both the floor concrete portion and the beam concrete portion. In addition, the top end of the weir board can be used as a level ruler for the beam / floor concrete.

On the other hand, it is possible to cast concrete having different properties at the boundary of the weir. For example, only high-strength concrete to be cast at the beam portion is used, and a floor portion having a larger volume is usually used. The cost can be reduced significantly by using concrete. Even if concrete with different properties is used, since the continuity is exhibited by the slab anchoring streak, the integrity of the concrete cast on the floor and the concrete cast on the beam can be increased. .

If a ladder-shaped unit in which the slab anchoring streak and the dam are combined in advance is prepared and set on the formwork, the reinforcing work can be rationalized.

According to the second aspect of the present invention, in addition to the above action, the joint between the dam and the concrete is strengthened by the bulging portion for the cotter, and the opposite side of the bulging portion for the cotter is provided. Since it is a recess, the joint between the dam and the concrete is similarly strengthened on the opposite side, and the bondability between the floor concrete portion and the beam concrete portion is increased.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional side view showing one embodiment of the method for separating floor concrete according to the present invention.

First, the weir plate 1 for splicing used in the method of the present invention will be described. As shown in FIGS. 2 and 3, the vertical plate 1a is made of metal such as steel or hard synthetic resin. Forming a horizontal flange 1b at the lower end of the, and forming a nail hole 2 in the horizontal flange 1b to form a nail fastening flange,
A horizontal flange 1c is also provided on the upper end. The horizontal flange 1c is narrower than the horizontal flange 1b in order to improve the filling property of concrete.

Further, reinforcing bar through holes 3 are formed at appropriate positions at the upper position of the vertical plate 1a, and swelling portions 4 for a cotter are formed on the vertical plate 1a by pressing or other means.
The bulging portion 4 is preferably located between the reinforcing bar through holes 3, and a concave portion is formed on the opposite side.

In FIG. 1, 5 is a beam form, 6 is a floor form, 7 is a beam main bar, 8 is a beam stirrup bar, 9 is a slab upper bar, and 10 is a slab lower bar, but the beam frame 5 It is the same as the conventional method that the end of the floor formwork 6 is placed on the upper end of the, and these are combined to form a formwork.

According to the present invention, the horizontal flange 1b is nailed at the edge of the floor formwork 6 on the boundary line between the beam formwork 5 and the weir plate 1 for splicing is raised. In the figure, reference numeral 12 is a pier arranged at the joint between the beam form 5 and the floor form 6, and the pier 12 is interposed for the nailing.

Further, the slab anchoring muscle 11 was penetrated through the dam 1 through the reinforcing-bar through-hole 3. The slab fixing streak 11 penetrates through the opposing weir plates 1 rising above the left and right beam form frames 5, and has a length that straddles the beam portion.

Although the end portion of the slab anchoring muscle 11 is wrapped around the upper slab muscle 9, the presence of this prevents the floor muscle from increasing.

In this way, since the floor concrete placing portion and the beam concrete placing portion are partitioned to the upper side by the weir board 1, it becomes possible to place concrete having different properties with the weir board 1 as a boundary. . At that time, the top end of the weir plate 1 having the horizontal flange 1c can be used as a level ruler for the beam / floor concrete. When the floor formwork is a half PC plate or the like and the level accuracy is poor, the horizontal flange 1C can be used as a level ruler by interposing a level adjusting bolt or the like in the horizontal flange 1b.

Further, as shown in FIG. 4, a ladder-shaped unit in which the slab fixing streak 11 and the dam 1 are combined in advance may be prepared and set on the mold.

FIG. 5 shows a second embodiment of the present invention.
As shown in FIGS. 6 and 7, in the weir plate 1 for splicing, reinforcing bar through holes 13 are formed in the lower position in addition to the reinforcing bar through holes 3 in the upper position of the vertical plate 1a. The reinforcing bar through hole 13 may be a cutout hole reaching the horizontal flange 1b.

In this way, the lower slab reinforcing bar 10 was made to penetrate through the reinforcing bar through hole 13 so that the end portion was projected to the beam portion.

[0025]

As described above, the method for splitting floor concrete according to the present invention can be applied to a case where a beam form and a floor form are joined and concrete is cast in the beam form and on the floor form. Since floor concrete and concrete such as beams can be separately punched, a splint for splicing can be easily installed, and the slab anchoring streak can be easily inserted through this splint to penetrate the floor slab streak. In addition to the condition being obtained, the top end of this splint for splicing can be used as a level ruler for beams and floor concrete. In addition, if a ladder-shaped unit in which the slab anchoring streak and the dam are combined in advance is prepared and set on the formwork, the work of arranging can be rationalized.

On the other hand, it becomes possible to place concrete having different properties on the basis of a weir board. For example, only concrete having a high strength is used for placing a beam portion, and a floor portion having a larger volume than this is generally used. The cost can be reduced significantly by using concrete. Even if concrete with different properties is used in this manner, the slab anchorage bars are pierced so as to hang between the opposing dams, and the ends of the slab anchorage bars are laid on the upper slab muscles for reinforcement. , The floor slab reinforcement can show continuity in both the floor concrete part and the beam concrete part by this slab anchorage bar, so that the integrity of the concrete poured into the floor part and the concrete poured into the beam part is increased. Is something that can be done.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional side view showing a first embodiment of a floor concrete placing method according to the present invention.

FIG. 2 is a front perspective view showing an example of a splicing plate for splicing used in the method of the present invention.

FIG. 3 is a back side perspective view showing an example of a splicing plate for splicing used in the method of the present invention.

FIG. 4 is a perspective view of a unit showing an application example of the method of the present invention.

FIG. 5 is a vertical cross-sectional side view showing a second embodiment of the floor concrete placing method according to the present invention.

FIG. 6 is a front side perspective view showing another example of a splice plate for splicing used in the method of the present invention.

FIG. 7 is a back side perspective view showing another example of a splicing board for splicing used in the method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cushion board 1a ... Vertical board 1b ... Horizontal flange 1c ... Horizontal flange 2 ... Nail hole 3 ... Reinforcing bar through hole 4 ... Bulging part 5 ... Beam form frame 6 ... Floor form frame 7 ... Beam main bar 8 ... Beam stirrup bar 9 ... Slab upper muscle 10 ... Slab lower muscle 11 ... Slab anchor muscle 12 ... Pier

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Ito 2-14, Shin-eicho, Naka-ku, Nagoya-shi, Aichi Kashima Construction Co., Ltd., Nagoya Branch (56) Reference JP-A-62-37465 (JP, A) Kaihei 4-155058 (JP, A) JP-A-2-101259 (JP, A) JP-B 2-44974 (JP, B2)

Claims (2)

(57) [Claims] When a beam form and a floor form are joined and concrete is cast in the beam form and on the floor form, a lower end is provided on a boundary between the beam form and the beam form on the floor form. It has a horizontal flange for nailing, raises a damming plate for joining with reinforcing bar through holes above the left and right beam formwork, and spans the beam part through the reinforcing bar through holes. The slab anchoring streak is pierced so as to span the opposing dams, and the end of the slab anchoring bar is wrapped around the slab upper bar to arrange the reinforcement, and concrete having different properties with the dam as the boundary is used. A method for placing floor concrete, which is characterized by placing it. 2. The method for striking a floor concrete according to claim 1, wherein the weir for splicing is formed with a bulge for a cotter having a recess on the opposite side.