JPH06185153A - Floor concrete placing form and execution method for constructing floor - Google Patents

Abstract

PURPOSE:To prevent chipping of a form for concrete placing and enhance the workability. CONSTITUTION:In the center across the thickness of the slide face alongside the longer edge of each member in the attitude that the main plate surface 10a lies horizontal, a ridge 12 is extended in the longitudinal direction of the side face. The side face area above the ridge 12 is made a slope 13 with the over-part retreating. The foremost of the ridge oversurface in the protruding direction is made a slope 14 which is in down gradient toward the foremost, while the base end 15 except this foremost part remains level. The tip face 16 of the ridge 12 is made plumb, and the tip faces 16, 16 of forms 10, 10 are tightly attached to each other. The undersurface 17 of the ridge 12 is made a slope extending to the bottom edge of the side face, so that no chipping occurs at all or substantially even if a through hole 18 is bored. Because of the slope 14, a V-shaped groove is formed at the butted part of the ridges 12, 12 with each other, and therewith the drill tip is aligned to facilitate boring works.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor driving formwork and a floor construction method. More specifically, the present invention relates to a floor driving formwork provided with a structure for suspending hanging metal fittings and a floor construction method using the same.

[0002]

2. Description of the Related Art The formwork used for placing concrete has been mainly made of wood such as veneer, but cement-based extrusion is used from the viewpoint of environmental damage and reduction of the amount of wood resources used. A driving form made of wood is becoming popular. This driving formwork is used as a formwork when pouring concrete. This driving formwork is supported by an appropriate supporting member until the concrete hardens, but when the strength of the concrete develops to a predetermined level,
This support member is removed. Then, the driving form is left as it is as a surface material of the concrete placing surface. If necessary, a decorative plate such as a tile or a stone material may be attached to the surface of the remaining driving form, or a finishing treatment such as painting may be performed.

An example of a conventional driving form is shown in FIG.
The driving mold 1 is a long plate made of a cement-based extrusion molding material, and has a plurality of recesses 2 extending in the longitudinal direction of the driving mold 1 on the surface in contact with the concrete to be cast.
Is provided. Recessed ridges 2 There are ridges 3 between the two. These concave ridges 2 and convex ridges 3 have a function of strengthening the bonding force between the driving form 1 and the cast concrete.

When a floor is constructed using this driving mold 1, a plurality of driving molds 1 are bridged between the beams, and the longitudinal side surfaces of each driving mold 1 are butted. Then, concrete is placed on the driving forms 1, 1, ... After the reinforcement.

It is common to hang a pipe or the like on the ceiling surface below the floor. In order to hang the hanging metal fittings between the pipe hangers, a casting type is used prior to placing concrete. There is a case in which the abutting surfaces of the frame 1 are drilled from above.

[0006]

When a hole is formed in a conventional driving form using a drill, a chip 5 is formed at the lower edge of the hole 4 as shown in FIG.

[0007]

A floor driving form according to claim 1 is a rectangular floor driving form horizontally bridged between beams, and a main plate surface of the floor driving form is horizontal. At the central portion in the thickness direction of the side faces along both long side edges in the posture, a ridge is provided extending in the longitudinal direction of the side face, and the side face above the ridge is an inclined surface whose upper side recedes. The projecting top end side of the ridge is a slope that slopes downward toward the tip, and the base end side except this tip side is a horizontal surface. Is a vertical surface, and the lower side surface of the ridge is an inclined surface extending to the lower end edge of the side surface.

According to a second aspect of the present invention, there is provided a floor construction method, wherein a plurality of the floor driving molds according to the first aspect are abutted on the side faces of the long sides and bridged between the beams. From this, a through hole is made with a drill, then a suspending metal fitting is passed through this through hole, and after that, concrete is placed after the reinforcement is arranged on the upper side of the floor casting formwork.

According to a third aspect of the present invention, there is provided a floor driving formwork which is a rectangular floor driving formwork that is horizontally bridged between beams. A ridge is provided in the center of the side surface along the side in the thickness direction, and a ridge having a size that can be fitted with the ridge is provided in the center of the other side in the thickness direction. It is characterized in that it is extended in the longitudinal direction of the side surface, and that the ridge is provided with a hole or a notch that extends vertically.

According to a fourth aspect of the floor construction method, the floor driving formwork of the third aspect is bridged between a plurality of beams, and the tip end side of the convex strip on the long side is made into a concave strip of the adjacent floor driving formwork. Fit and expose the through hole or notch of the convex strip, then pass a hanging metal fitting through the through hole or notch, and then place concrete after reinforcement on the upper surface of the floor casting formwork. It is characterized by that.

[0011]

In the floor driving form and the floor construction method according to the first and second aspects, when the holes are formed by the drill, the lower surface side of the ridge is an inclined surface, and chipping is unlikely to occur. In addition, since a V-shaped groove is formed on the upper surface of the abutting portion of the ridge,
Positioning (centering) of the cutting edge of the drill can be performed easily.

In the floor casting form and the floor construction method of the billing holes 3 and 4, it is not necessary to make a hole for passing the hanging metal fitting after laying the placing forms.

[0013]

EXAMPLES Examples will be described below with reference to the drawings. FIG. 1 is an enlarged view of a main part of a floor driving formwork 10 according to an embodiment. The driving form 10 is horizontally bridged between the beams so that the main plate surface 10a having the unevenness faces upward. The driving mold 10 is a rectangular plate made of a hollow extruded material, and a reinforcing bar 11 is embedded in the lower side surface thereof.

A ridge 12 extends in the longitudinal direction of the side surface at the central portion in the thickness direction of the side surface along both long side edges in a posture in which the main plate surface 10a is horizontal.

The side surface 13 on the upper side of the ridge 12 is an inclined surface 13 whose upper side recedes. The top surface of the ridge 12 on the tip side in the projecting direction is a slope 1 that has a downward slope toward the tip.
4, and the base end side 15 excluding the tip end side is a horizontal surface. The front end surface 16 of the ridge 12 is a vertical surface, and the front end surfaces 16 and 16 of the molds 10 and 10 are in close contact with each other. The lower side surface 17 of the ridge 12 is an inclined surface extending to the lower edge of the side surface.

A plurality of the driving molds 10 are bridged between the beams, and the projecting ridges 12 are laid out so that the tip surfaces 16 of the ridges 12 abut each other. Then, a through hole 18 is drilled from above along the abutting surface of the tip end surface 16 of the ridge 12 as shown in FIG. 2, and then the hanging fitting 19 is passed through the through hole 18. After that, concrete is placed on the upper side of the driving form 10, 10 ...

According to this construction method, the lower surface 1 of the ridge 12 is
Since 7 is an inclined surface, even if the through hole 18 is drilled, no chipping or almost no chipping occurs. Further, since the tip end side of the upper surface of the ridge 12 is the inclined surface 14, a V-shaped concave ridge is formed at the abutting portion of the ridges 12, 12. With this groove, the cutting edge of the drill is centered, which facilitates drilling. The angle α (angle of the slope 17) shown in the figure is preferably 60 ° or less.

FIGS. 3 and 4 show a driving form 20 according to another embodiment and a floor construction method using the same. Driving formwork 20
A ridge 21 is provided at a central portion in the thickness direction of a side surface along one long side in a posture in which the main plate surface 20a having the unevenness is horizontal and upward. At the central portion in the thickness direction of the other side surface, a concave stripe 22 having a size capable of fitting with the convex stripe 22 is formed.
Are extended in the longitudinal direction of the side surface. In the ridge 21,
A through hole 23 or a notch 24 is provided which vertically extends in the vertical direction. Note that only one of the through hole 23 and the notch 24 may be provided, or both of them may be provided. Reference numeral 25 indicates a reinforcing bar. This driving formwork 20 is bridged between a plurality of beams.
Then, the tip side of the ridge 21 is fitted into the ridge 22 of the adjacent driving form 20, and at this time, the through hole 23 of the ridge 21 is fitted.
Alternatively, only the tip side of the convex strip 21 is fitted into the concave strip 22 so that the notch 24 is exposed.

Next, as shown in FIG. 4, the suspending metal fitting 26 is passed through the through hole 23 or the notch 24, and then the driving form 20.
Concrete is placed on the upper surface of the. According to the driving form 20 of FIGS. 3 and 4 and the construction method using the same, it is not necessary to provide holes or notches on site, and the efficiency of construction work is significantly improved.

[0020]

As described above, according to the floor casting formwork of the first aspect of the present invention and the floor construction method of the second aspect, the through holes can be easily drilled and no chipping occurs during the drilling.

According to the floor driving formwork of claim 3 and the floor driving formwork and floor construction method of claim 4, it is not necessary to make holes or notches at the site, and construction work is not required. Good nature.

[Brief description of drawings]

FIG. 1 is an enlarged view of a main part of a floor driving formwork according to an embodiment.

FIG. 2 is a cross-sectional view showing a floor construction method using the floor driving mold of FIG.

FIG. 3 is a perspective view of an essential part of a floor driving form according to another embodiment.

FIG. 4 is a cross-sectional view showing a floor construction method using the floor driving form of FIG. 3.

FIG. 5 is a perspective view showing a conventional floor driving formwork.

FIG. 6 is a cross-sectional view showing a conventional floor construction method.

[Explanation of symbols]

 1, 10 and 20 Floor driving form 12, 12 Convex strip 22 Concave strip 23 Through hole 24 Notch

Claims (4)

[Claims] 1. In a rectangular floor driving form horizontally spanned between beams, in the thickness direction center of side faces along both long side edges in a posture in which the main plate surface of the floor driving form is horizontal. A ridge extending in the longitudinal direction of the side surface, and the side surface above the ridge is a slope whose upper side recedes, and the tip end side in the protruding direction of the upper surface of the ridge is The slope is a downward slope toward the tip, the base end side except this tip side is a horizontal plane, the tip end surface of this ridge is a vertical surface, and the lower side surface of this ridge is A floor driving formwork having a slope extending to the lower edge of the side surface. 2. A plurality of the floor driving molds according to claim 1, the side faces of the longer sides are butted and bridged between the beams, and a through hole is drilled from above along the butted face of the tip end face of the ridge. A floor construction method, in which a hanging metal fitting is passed through the through hole, and after that, concrete is placed on the upper side of the floor-driving formwork after arranging. 3. A rectangular floor driving form horizontally spanned between beams, in the thickness direction center of a side surface along one long side in a posture in which the main plate surface of the floor driving form is horizontal. A convex strip extending in the longitudinal direction of the side surface, and a concave strip having a size large enough to fit with the convex strip extending in the longitudinal direction of the side surface in the central portion in the thickness direction of the other side surface. A floor driving formwork characterized in that a hole or a notch vertically extending in the vertical direction is provided in the convex strip. 4. The floor driving form according to claim 3 is bridged between a plurality of beams, and the leading end side of the convex strip on the long side is fitted into the concave strip of the adjacent floor driving form, and the convex The through hole or notch of the strip is exposed, then the hanging metal fitting is passed through the through hole or notch, and then
A floor construction method characterized by placing concrete on the upper surface of a flooring formwork after reinforcement.