JP2665930B2 - How to assemble the formwork - Google Patents

Description

The present invention relates to a method for assembling a formwork.

<Prior Art> A formwork for placing concrete must support the concrete so that it does not fall down by pressure from inside after the concrete is put into the inside.

However, since the pressure from inside does not act until the concrete is cast, it is necessary to prevent the inside of the form from falling down by some means.

It is a separator that is used to prevent such inward and outward falls, and has a structure that connects and restrains the molds on both sides.

<Problems of the Related Art> For example, when assembling a beam formwork, as shown in FIG. 8, both sides of the formwork c are restrained by the separator b prior to assembling the reinforcing bar and hanging down the reinforcing bar cage a. I can't keep it.

After the space inside the mold c is opened, and the reinforcing cage a is hung and set in the internal space, the mold can be held by first traversing the separator b. (9th
(Fig.) This is because if the separator b is traversed first, the reinforced basket a cannot be suspended.

For this reason, the separator b is installed by reaching out from above the form c. However, since the reinforcing cage a has already been set in a complicated manner, the mounting work of the separator b is very difficult and time-consuming.

Further, when the height of the beam is high, it is impossible to arrange the separator b since the hand does not reach below the internal space.

<Object of the present invention> The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide the following method of assembling a mold.

<B> A method of assembling a formwork in which a separator can be attached from the side even in a beam where the separators need to be arranged after assembling the surrounding formwork first.

<B> How to assemble a formwork that is easy to install.

<C> A method for assembling a mold that can solve the conventional problems at low cost.

<Configuration of the Present Invention> Next, an embodiment of the present invention will be described with reference to the drawings.

<A> Structure of Separator Used (FIG. 1) The overall structure of the separator is the same as the conventional one.

That is, reference numeral 2 denotes a separator steel bar that crosses between the molds 1.

Screws are provided at both ends of the separator steel rod 2 so that the P-con 3 can be screwed.

This P-con 3 is a low frustum-shaped conical member,
A bolt 4 projects from the center of the outer diameter (the bottom surface side of the truncated cone).

The form holding material 5 is a long cylindrical nut that can be screwed to the bolt 4.

A horizontal pipe for fixing the side frame is attached to the form holding material 5 using a fixing tool.

<B> Penetrating cover The penetrating cover 6 is a member for closing the form hole 7 of the form 1.
The disk 61 includes a disk 61 and a column 62 protruding from one side of the disk 61 concentrically with the disk 61, and is integrally formed of synthetic resin or the like.

The through cover 6 has one through hole 63 for inserting the bolt 4.

The through hole 63 is located within the range of the cylindrical portion 62 and the through cover 6.
Formed at an eccentric position deviated from the center of.

This is because when the P-con 3 is installed on the mold 1 as described later, a part of the P-con 3 is brought into contact with the inner surface of the mold to prevent the mold 1 from falling down.

Therefore, the opening position of the through hole 63 is basically
What is essential is that a hole is formed at a position where a part of the P-con 3 can be brought into contact with the inner surface of the mold 1 when the penetration cover 6 is inserted through the bolt 4 of the P-con 3.

<Method of Use> Next, a method of assembling the formwork will be described.

<B> Forming hole of formwork hole As shown in FIG.
Then, form holes 7 are formed.

The form hole 7 has a diameter substantially equal to the diameter of the cylindrical portion 62 of the through cover 6.

<B> Insertion of separator steel rod Next, as shown in FIG.
Pcon 3 is installed on the inner surface of the other formwork 1b facing 1a,
A form holding material 5 is screwed onto a bolt 4 (not shown) integral with the P-con 3 protruding from the outer surface of the form 1b.

As a method for attaching the PC 3, a known attaching method can be adopted in addition to a method for attaching using the penetrating cover 6 described later.

Next, the left end of the separator steel rod 2 is screwed into the P-con 5 of the other mold 1b through the mold hole 7 of one mold 1a.

<C> Installation of P-con As shown in FIGS. 4 and 5, the right end of the separator steel rod 2 supported by being screwed to the other mold 1b is inside the mold hole 7 of one mold 1a. Located in.

Then, a separate P-conn 3 inserted through the form hole 7 is screwed and connected to the right end of the separator steel rod 2.

Thereby, the bolt 4 of the P-con 3 projects outside the form hole 7 as shown in FIG.

<D> Attaching the through cover As shown in FIG. 6, the column portion 62 of the through cover 6 is fitted into the form hole 7 of one of the mold forms 1a from the outside, and the form hole 7 is closed.

At this time, the through holes 63 of the through cover 6 are made to penetrate through the bolts 4 protruding from the one mold 1a.

Since the through hole 63 is eccentric with respect to the center of the through cover 6, a part of the PC 3 can be brought into contact with the inner surface of the one mold 1a.

That is, the cylindrical portion 62 of the penetrating cover of the P-con 3 and the mold 1a
And straddle the inner surface of

<E> Attachment of form holding material As shown in FIG.
A form holding member 5 is screwed to a bolt 4 protruding outward from one of the forms 1a in a state of contacting the inner surface of the form.

As a result, the inner surface of the mold 1a is supported by the P-con 3.
Further, the outer surface of the mold 1a is provided with a mold holding material 5 through a penetrating cover 6.
Supported by

After the screwing of the form holding material 5 is completed, a horizontal flap such as a pipe is attached to the form holding material 5 protruding to the outside of the form using a known fastener or the like, and the assembling of the form is completed.

Although the case where the present invention is applied to the beam formwork has been described above, it is needless to say that the present invention can be applied to a column or wall formwork.

<Effects of the Present Invention> Since the present invention has the above-described configuration, the following effects can be expected.

<A> When assembling a beam formwork, it has conventionally been necessary to attach the separator after the formwork is completed, and thus it has been difficult to mount the separator from the side surface of the formwork.

By using the method of the present invention, since accurate positioning is not required, the separator can be easily attached to the beam from the side surface of the mold.

<B> When assembling a beam formwork, conventionally, it was sometimes impossible to attach a separator because the lower part of the interior space of the formwork was not accessible from above.

Using the method of the present invention, separators can be mounted at all required locations, no matter how tall the beam is.

<C> In the case of pillars, one side of the formwork can be assembled last, but even in that case, drill the hole by anticipating the penetration position of the separator and go through the separator by groping from the opposite side, or both. They had to struggle with arranging another person in a position where they could see and giving a signal to penetrate the separator.

In the present invention, the separator can be easily attached even in the case of a pillar without such inconvenience.

<D> No special tool is required for attaching and detaching the through cover, and the through cover can be easily attached and detached.

<E> Since the through cover with the through hole formed at the eccentric position is used, the mold can be reliably supported by the P-container abutting on the inner surface of the mold, and the position of the bolt protruding outward from the mold changes. We can respond even if we do.

[Brief description of the drawings]

 FIG. 1... Explanation of an apparatus used in the method of the present invention FIG. 2 to FIG. 7...

Claims (1)

(57) [Claims] 1. A truncated cone-shaped P-conn is screwed into an end of a separator steel rod disposed to penetrate a mold, and a bolt protruding outside the P-conn is projected out of the mold. In a method for assembling a formwork in which a form holding material is screwed from a form outside to a bolt to prevent the inside and outside of the form from falling, a cylindrical portion is integrally formed on a disk portion, and a through hole eccentric to the disk portion. A through hole having a diameter larger than the cylindrical portion of the through cover is opened in at least one of the pair of facing frames using a through cover formed with a through hole, and a P-conn is screwed into an end portion and connected. The separator steel rod is inserted into the mold through the mold hole of the mold, and the bolt of the P-container projecting outward from the mold hole penetrates the through hole of the through cover and the cylindrical portion of the through cover is inserted. To close the form hole, and use bolts that protrude outward from the disc The frame holding material is screwed in to prevent the form from falling to the outside, and the P-con formed by straddling the cylindrical portion of the through cover and the inner surface of the form to contact the inside of the form. A method for assembling a formwork, characterized in that it prevents overturning.