JPH07113245B2 - Formwork construction method of PC board joint and formwork fixing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mold construction method for a joint of a PC plate used for a wall plate and the like, and a mold fixing metal piece.

(Prior Art) In the case of a conventional PC (precast concrete) plate corner joint, T-shaped, cruciform, or straight joint formwork, a plate-shaped formwork and this type are used. It requires members such as a separator and Foam Tie (registered trademark) for supporting the frame, and a tool for assembling and disassembling.

(Problems to be solved by the invention) According to the conventional example, since many members and many tools are required for the work of the PC board joint formwork, it is troublesome and troublesome to assemble and disassemble the joint formwork. However, there is a problem in that the cost of materials and the like is high.

It is an object of the present invention to make it possible to easily and easily perform a formwork for a joint of a PC board and to keep the cost of the member low.

(Means for Solving the Problem) The formwork method of the joint of the PC board according to the present invention is as follows.
Among the plurality of PC plates forming a joint of a predetermined shape, the triangular form is positioned between the PC plates that are in mutually abutting position, and the contact surface of the triangular form is brought into contact with both PC plates, and then the above The pressed surface of the triangular mold opposite to the contact surface is pressed and fixed by using a mold fixing hardware and a wedge.

In the process of pressing and fixing, the base part of the mold fixing metal piece is attached to the PC plate, and a wedge, that is, a pushing body is driven between the tip part of the mold fixing metal piece and the triangular form, and the triangular form is fixed.
It is clamped and fixed between the PC board and the mold fixing hardware. The shape of the joint includes T-shape, L-shape, cross shape, and linear shape.

The mold fixing device used in the mold construction method of the joint of the PC plate according to the present invention includes a holding plate that can come into contact with the pressed surface of the triangular form, and an attachment fixed to the base of the holding plate. It comprises a rod, a mounting hole which is opened in the PC plate and into which the mounting rod can be inserted, and a wedge which can be driven between the triangular form and the holding plate.

(Operation) The members used in the above-mentioned mold construction method are only two members of the mold fixing metal and the wedge in addition to the triangular mold.

The formwork fixing device consists of a formwork fixture, a wedge, and a mounting hole for the PC board.The formwork fixture is supported on the PC board by inserting a mounting rod for the formwork fixture into this mounting hole. To be done.

(Example) First, the form-assembled state of the T-joint will be described, and then the construction method will be described.

In FIGS. 1 to 3, the three PC plates 1, 2, 3 in the T-shaped joint face each other with a predetermined gap, and these gaps form a T-shaped void portion 4. And, between the PC board 1 and the PC board 2, the right-angled part of the triangular form 5 of the plane right-angled triangle shape is set to face the PC board.
The PC board is set so that the right-angled part of the triangular form frame 5 in the shape of a right-angled triangle is facing the PC plate 3, and the contact surface 5 of each triangular form
The ends of a and 5a are in contact with the outer surfaces of the PC plates 1, 2, and 3 to seal the lower side of the void 4 in FIG. Each triangular form 5, 5 is pressed and fixed to the PC plates 1 to 3 side by the form fixing hardware 6, ... And the wedge 7 ,.

5c is a plate for finishing margin.

The mold fixing hardware 6 is a holding plate bent as shown in FIG.
6a, a reinforcing rod 6b connecting both ends of the pressing plate on the bent side (lower side in the figure), and a mounting rod 6 penetrating the base portion 6a1 of the pressing plate 6a.
It consists of c and.

The pressing plate 6a is bent 45 degrees from the base 6a1 toward the tip,
The planar shape is "he".

Further, the reinforcing rod 6b and the mounting rod 6c are formed by cutting deformed bar into a predetermined length. Both ends of the reinforcing rod 6b are fixed to the base portion 6a1 and the tip portion of the holding plate, respectively. The mounting rod 6c penetrates the holding plate base 6a1 in an orthogonal state and is fixed to the base and the connecting rod 6b. And mounting rod
6c is inserted into a mounting hole 1a formed in the PC board 1.

The wedge 7 is driven between the pressing plate 6a and the pressed surface 5b of the triangular frame 5 in the direction of the arrow in FIG.

Reference numeral 8 denotes a U-shaped handle attached to the triangular frame 5, which is used when the triangular frame is disassembled.

Next, the formwork method will be described mainly with reference to FIG.

Formwork construction for PC boards 1 and 2 will be explained.

Build the PC boards 1 and 2 as shown in Fig. 4 (a), then P
The right-angled part of the triangular frame 5 is made to face the butt gap of the C plates 1 and 2 and the contact surface 5a is applied to the outer surface of the PC plates 1 and 2 to stand up the triangular frame, and as shown in FIG. Insert the mounting rod 6c of the mold fixing hardware 6 into the mounting hole 1a of the PC plate 1, and then press the pressing plate 6a and the pressed surface of the triangular form 5 as shown in FIG.
Drive wedge 7 between 5b. As a result, the holding plate 6a serves as a spring to fix the triangular frame 5.

The formwork between the PC board 1 and the PC board 3 is performed in the same procedure as above.

The space between the PC plate 2 and the PC plate 3 is sealed with a plate-shaped frame.

After that, when concrete is placed in the voids 4 of the PC plates 1, 2, and 3, the PC plate joint is constructed.

After the concrete is cured, the triangular form 5 is disassembled in the reverse order of the above-mentioned procedure for assembling the triangular form.

The mounting holes 1a are also provided on the PC boards 2 and 3 side so that the fixed form fittings 6
May be supported on the PC boards 1, 2, and 3, respectively.

The joint to which the triangular frame 5 is applied is not limited to the above example, and may be the joint shown in FIG. 5 (a) (a) (c) (d). That is, the two PC boards 11,1 shown in FIG.
T-shaped one consisting of 2, three PC boards 21, shown in FIG.
T-shaped model consisting of 22,23, two PCs shown in the same figure (c)
For L-shaped (corner) joint consisting of plates 33, 34, straight joint consisting of two PC plates 41, 42 shown in FIG. Can be used.

(Effect of the invention) As described above, according to the present invention, since the joint formwork can be performed by using the triangular formwork, the formwork fixing hardware, and the wedge, the number of members and tools used is smaller than that of the conventional example. The corners and formwork can be easily done, saving time and effort.
The cost required for the members can be kept low. Further, the mold fixing hardware has a simple structure, and since the mold fixing hardware is supported by the PC plate only by inserting the mounting rod into the mounting hole, it is easy to support the mold fixing hardware.

[Brief Description of Drawings] FIG. 1 is a perspective view showing a state where a triangular form is set, FIG. 2 is an enlarged plan view of a mold fixing fixture, and FIG. 3 is between a PC plate 1 and a PC plate 2. 4A to 4C are perspective views showing stepwise steps of the formwork construction, and FIGS. 5A to 5D are various sectional views showing a fixed state of the triangular formwork of FIG. FIG. 6 is a plan view showing an example applied to the joint of FIG. 1,2,3,11,12,21,22,23,31,32,41,42 ... PC plate, 1a ... Mounting hole, 5 ... Triangle frame, 5a ... Abutting surface, 5b ... Pressed surface, 6 ... Mold fixing hardware, 6a ... Holding plate, 6b ... Reinforcing rod, 6c ... Mounting rod,
7 ... Wedge.

Claims (2)

[Claims] 1. A plurality of PCs forming a joint of a predetermined shape.
Among the plates, the triangular form is arranged between the PC plates that are in a position facing each other, and the contact surfaces of the triangular form are brought into contact with both PC plates, and the triangular form on the side opposite to the contact surface is formed. Apply the mold fixing hardware to the surface to be pressed, attach the base of the mold fixing hardware to the PC plate, and fix the triangle mold by driving a wedge between the tip of the mold fixing hardware and the triangle mold. PC characterized by
Forming method of board joints. 2. A holding plate which can come into contact with the pressed surface of the triangular frame, and a mounting rod fixed to the base of the holding plate.
The method for constructing a joint form of a PC plate according to claim 1, comprising a mounting hole which is opened in the PC plate and into which the mounting rod can be inserted, and a wedge which can be driven between the triangular form and the holding plate. Formwork fixing device used for.