JP2964277B2 - Discarded formwork for columns and frame plate members used for each - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form for a pillar used for building a pillar at a construction site.

[0002]

2. Description of the Related Art Conventionally, steel reinforced concrete (SRC)
When a structural skeleton is built in a building such as a reinforced concrete structure (RC structure) or the like, the pillar P is usually constructed by casting concrete 3 inside a formwork of a veneer plywood P1 assembled as shown in FIG. Have been.

However, in the above-described conventional column construction method, the veneer plywood P1 is accurately positioned, the support members 2 are arranged around the plywood P1, and the opposing support members 2 are connected and fixed by the separator 18 or the like. It is necessary to secure the veneer plywood P1 by doing
This series of operations cannot be performed quickly and accurately due to deterioration of labor conditions such as lack of skilled workers.

For this reason, a precast concrete formwork (PC board formwork) P2 is supported and fixed by a support member 2 as shown in FIG. 13, or a steel pipe form is used to cope with the shortage of skilled workers. However, these methods have a problem in that the weight and weight of these methods limit the planning and setup of the lifting crane.

[0005]

Therefore, there is a need to be able to easily and accurately build columns of a structural skeleton.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and has one side extending from a corner on the front surface or the back surface of one side end of a plate-like member. An L-shaped angle member provided along the flat plate portion, and a connecting flat plate portion connecting the two parallel flat plate portions on the front surface or the back surface of one side end of another plate-like member provided along the flat plate portion. The side end portions of the adjacent plate members are connected to each other via the Z-shaped angle member to form a concrete casting portion, and the concrete casting surface of the plate member is formed unevenly. It is a discarded formwork for pillars,
At least one of an L-shaped angle member and a Z-shaped angle member is supplied as a frame plate member used as the discarding frame for the pillar, and is supplied as a separate member from a plate-shaped member having a concrete-casting surface formed in an uneven shape, and attached. A frame plate member characterized in that it is provided.

[0007]

FIG. 1 shows an example of a frame plate member 1 according to the present invention, which is manufactured at a factory, and has an adhesive property with concrete on a concrete casting surface 10A of a frame plate body 10 which is a plate-like member. A large number of vertical grooves 11 are formed in parallel. Numeral 12 denotes a notch serving as a joint with the beam, which is formed facing the upper end.

An L-shaped angle 13 is provided along one of the flat portions extending from the corners on the concrete casting surface 10A at one end of the frame plate body 10, and the other side end is provided. The two parallel flat plate portions 14a, 14a in which the Z-shaped angle 14 is parallel to the opposite surface of the concrete casting surface 10A
Are provided along the connecting flat plate portion 14b connecting them, thereby forming assembling means. The L-shaped angle 13 and the Z-shaped angle 14 may be attached at a construction site.

The frame plate member 1 has rigidity which is not substantially deformed by the pressure of the concrete to be cast by reinforcing ribs of a conventional corrugated folded plate or other types of ribs. It must not corrode for a long time. Specific examples of such materials include iron (coated with anticorrosion paint, etc.), stainless steel,
Various metals such as aluminum, rigid plastics such as phenolic resin, polyvinyl chloride resin and ABS resin, semi-rigid plastics such as polyethylene resin, reinforced glass fiber concrete, and the like can be mentioned, and these materials are appropriately selected and used.

As shown in FIG. 2, four frame plate members 1 having the above structure are combined, and the adjacent L-shaped angle 13 and Z-shaped angle 14 are connected and fixed by screws, etc. The disposable formwork F for pillars according to the present invention, which is provided with C and has a rectangular horizontal section, is assembled.

The discard frame F for columns is supported and fixed from the periphery by the support member 2 as shown in FIG. 3, for example. In this case, the support member 2 has one large through hole 21 at one end and a plurality of wedge holes 22 at a predetermined interval at the end.
The through-hole 21 and the wedge hole 22 are provided in a direction orthogonal to each other, and the through-hole 21 is formed in such a size that the other end can penetrate. Then, 4
The two support members 2 are arranged, the respective support holes 2 are made to pass through the through holes 21 through the wedge holes 22 of the other support members 2, and the wedges 23 are driven into the wedge holes 22 at the end portions, thereby disposing of the post-type frame F Is pressed from the outside to the inside by the support member 2, and the pillar frame F of the present invention is securely supported and reinforced.

When concrete 3 is poured into the concrete placing portion C inside the discarding formwork F for column and the concrete 3 is solidified, the wedge 23 is removed and the support member 2 is removed.
A concrete pillar P whose periphery is surrounded by the frame plate member 1 is constructed.

Concrete casting surface 10 of frame plate body 10
A has a large number of vertical grooves 11 formed therein, and one parallel flat plate portion 14a of a Z-shaped angle 14 provided at one side end thereof protrudes into a concrete placing portion C as shown in FIG. The concrete 3 to be cast in this part
One parallel plate portion 14a of the Z-shaped angle 14 is in a state of being bitten inside the column P formed by the above. For this reason, it is difficult to separate the column P and the discarded frame F for a column. In addition,
If the reinforcing bars are appropriately arranged before the concrete 3 is cast, the columns P to be built will be reinforced concrete structures.

Incidentally, in the actual construction of the pillar P, it is necessary to consider the connection with walls, floors, beams, and the like.

FIG. 4 is a horizontal sectional view showing an assembly procedure when the wall W is built by a conventional construction method, wherein W1 is a veneer plywood of a formwork, and an end of the veneer plywood W1. A connection fitting (corner fitting) W2 is connected to and fixed to the wall fitting portion of the post-removal formwork F. W3 is a support member for the veneer plywood W1.

FIG. 5 is a horizontal cross-sectional view showing an assembly procedure when the wall W is constructed by the thin wall form W4. The end of the thin wall form W4 and the column disposing form F L-shaped connection fitting (corner fitting) W5 is connected to and fixed to the wall fitting portion of FIG.

FIG. 6 is a horizontal sectional view showing an assembly procedure when the beam B is constructed by the precast concrete beam form B1, and the end of the precast concrete beam form B1 is discarded for columns. A connection hardware B2 is connected and fixed to an end face of the beam connection portion 12 of the frame F.

FIG. 7 is a horizontal cross-sectional view showing the connection procedure when the beam B is built by the conventional method, and the end of the veneer plywood B3 forming the form is replaced with a column-shaped formwork F. Beam joint 1
2, a connection hardware B4 is connected and fixed.

As the frame plate member 1, a lateral groove 15 can be formed on the concrete casting surface 10A of the frame plate body 10 by the same means as the vertical groove 11 as shown in FIG. Further, ribs (regardless of continuous / interrupted) 16 are provided in the vertical direction on the concrete casting surface 10A of the frame plate body 10 as shown in FIG. 9 to form vertical grooves 111, or as shown in FIG. Rib 1 on concrete casting surface 10A of main body 10
6 may be provided in the horizontal direction to form a horizontal groove 151.

When the frame plate member 1 has the lateral groove 15 shown in FIG. 8, the adjacent ends are connected by an L-shaped connecting hardware 17 as shown in FIG. After the fixing, a method of connecting and fixing the frame plate members 1 facing each other with the separator 18 may be adopted.

Incidentally, a series of on-site construction may be performed according to the following procedure. Ink marking and nemaki wood set Pillar and wall reinforcement Frame board members building and fixing Wall form assembly Beam form assembly Floor form assembly Beam reinforcement Floor arrangement Concrete placement

[0022]

As described above, the frame plate member manufactured at the factory is composed of an L-shaped angle member provided at one side end and a Z-shaped angle member provided at the other side end as assembling means. Since the frame for the pillar is formed only by connecting the screws with screws or the like, the assembly can be performed without a skilled worker, and the man-hour itself is greatly reduced.

Further, since the rigidity is higher than that of a conventional mold using a veneer plywood, ancillary work such as a support member is simplified. In addition, by using the frame plate member having the shape shown in FIG. 2, a large number of irregularities formed on the concrete casting surface of the frame plate main body portion and one parallel flat plate of the Z-shaped angle protruding into the concrete casting portion. The joint action with the parts makes it more difficult to separate the pillar, which is constructed by casting concrete, from the cast frame for the pillar. Furthermore, since the weight of the formwork is lighter than that of the PC plate formwork or the steel tube formwork, the lifting crane can be miniaturized and the operability is remarkably improved.

For the reasons described above, it is extremely easy to assemble the disposable formwork for the pillar, and it is not necessary to remove the formwork. In addition, since plywood is not used, it is a preferable technology from the viewpoint of protecting the forest resources and protecting the global environment.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a frame plate member used in the present invention.

FIG. 2 is an explanatory diagram of a discarded formwork for a pillar used in the present invention.

FIG. 3 is an explanatory view of a discarding formwork for a column supported and fixed by a support member.

FIG. 4 is an explanatory view showing an assembled state with a wall constructed by a conventional construction method.

FIG. 5 is an explanatory view showing an assembled state with a wall built by a thin wall form.

FIG. 6 is an explanatory view showing an assembled state with a beam built by a PC plate beam formwork.

FIG. 7 is an explanatory view showing an assembled state with a beam constructed by a conventional construction method.

FIG. 8 is an explanatory view of a frame plate member having a lateral groove on a concrete casting surface.

FIG. 9 is an explanatory view of a frame plate member in which ribs are formed on a concrete casting surface to form vertical grooves.

FIG. 10 is an explanatory view of a frame plate member in which a rib is formed on a concrete casting surface to form a lateral groove.

FIG. 11 is an explanatory diagram in which a frame for a pillar is formed by a frame plate member having a lateral groove on a concrete casting surface.

FIG. 12 is an explanatory diagram showing a conventional example.

FIG. 13 is an explanatory diagram showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame plate member 10 Frame plate main body 10A Concrete casting surface 11 Vertical groove 12 Notch 13 L-shaped angle 14 Z-shaped angle 14a Parallel flat plate portion 14b Connecting flat plate portion 15 Horizontal groove 16 Rib 17 Connection hardware 18 Separator 2 Support member 21 Penetration Hole 22 Wedge hole 23 Wedge 3 Concrete B Beam C Concrete casting part D Flat type deck F Dip frame for column P Column S Floor W Wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E04B 1/16

Claims (2)

(57) [Claims] 1. An L-shaped angle member provided along one of a flat plate portion extending from a corner on the front surface or the back surface of one end of a plate member, and one side of another plate member. Side ends of adjacent plate members are connected to each other via a Z-shaped angle member provided along a connecting flat plate portion connecting two parallel flat plate portions to the front surface or the back surface of the end portion. A concrete casting part is formed by this, and the concrete casting surface of the plate-shaped member is formed unevenly. 2. A frame plate member used for the discarding formwork for a pillar according to claim 1, wherein at least one of the L-shaped angle member and the Z-shaped angle member has a concrete casting surface formed in an uneven shape. A frame plate member supplied and attached as a separate member from the plate member.