JPH02128069A - Form device - Google Patents

Abstract

PURPOSE:To facilitate operation, and to reduce the cost of materials by constituting a housing supporting a plurality of panels from the rear sides in an extensible manner in the horizontal direction and enabling re-shoring as the panels are left as they are connected to the housing. CONSTITUTION:A plurality of panels 1 setting the wall surfaces of the internal space (a) of a structure A are supported by a housing 2 from the rear sides. The housing 2 is brought to an extensible state in the horizontal direction while re-shoring is possible as the panels 1 are left as they are connected. When corner sections are rounded slightly in the internal spaces (a)... of the structure A, the panels 1 are shaped of plane panels 11 and corner panels 12, beams 14 are connected continuously to the rears of the plane panels 11, and the housing 2 is coupled with the beams 14. The housing 2 is composed of a plurality of vertical members 21 and lateral members 22, and expansible expansion regulating members 3 are disposed at the end sections of separate lateral member 22 in the horizontal direction.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a formwork apparatus that is optimal for constructing structures having a specially shaped inner space, such as reinforced concrete (hereinafter referred to as RC) silos. Regarding.

(Prior art and its problems) Various formwork devices have been provided for constructing RC structures, but none of them are suitable for constructing structures with specially shaped inner spaces such as silos. In many cases, it is rather inconvenient to use formwork equipment for general structures.

However, as shown in Fig. 6, recent silos are so-called built-in type, in which a number of inner spaces a for silos are erected inside one structure A, which is partitioned like a honeycomb core. It is proposed to be formed as follows.

Under such a proposal, in order to make the structure A an RC structure, it is necessary to prepare a formwork device for constructing the special-shaped inner space a.

It is also important that the formwork device for constructing this special-shaped inner space a is formed so that it can be reused.

However, no formwork apparatus has been proposed to date that meets such requirements;

When constructing the structure A having the special-shaped inner space a as described above, the necessary formwork was prepared and used each time.

This invention was invented in view of the above-mentioned circumstances, and its purpose is to continuously construct an internal space of a special shape divided inside an RC structure upwards. Our goal is to provide the most suitable formwork equipment.

(Means for Solving Problem ! It has a plurality of panels that define the walls of the space, and a support frame that supports the panels from the back side, and the support frame is expandable and contractable in the horizontal direction, and the panels are connected to the support frame. It is characterized by the fact that it can be rearranged at any time.

When the inner space of the structure has a substantially rectangular planar shape with rounded corners,
The panel has a flat panel that sets a flat part of the wall surface and a corner panel that sets a corner part of the wall surface, and a beam is connected to the back of the flat panel,
It is assumed that a support frame is connected to the beam.

Further, the support rod includes a plurality of vertical members disposed in the vertical direction within the inner space, and a plurality of horizontal members in the horizontal direction fixedly connected to the vertical members. It is assumed that a telescopic adjustment member that can be expanded and contracted in the horizontal direction is held at the end of each of the panels, and a panel is connected to the end of the telescopic adjustment member.

Further, when the support frame is composed of vertical members and horizontal members, the support frame is reinforced by horizontal presses and diagonal presses, which are reinforcing members.

When necessary, a working stage is provided in series with the upper end or lower end of the support frame.

(Function) Therefore, by supporting the panel from the back side with the support frame, a wall surface that forms a predetermined inner space in the RC structure is set.

At this time, the panel supporting force in the support frame is borne by the horizontal members in the support frame, and the magnitude of the panel supporting force is adjusted by a screw jack, which is a telescopic member held by the horizontal members.

By contracting the support frame in the horizontal direction, the panel is separated from the wall surface forming the inner space, and the support frame can be replaced.

At this time, since the panel is integrally held in series with the support frame, the formwork apparatus can be replaced by suspending and moving the support frame.

Then, the formwork device is replaced by, for example, a lifting operation using a crane.

Further, during the above-mentioned repositioning work, concrete pouring work, wall surface finishing work, etc., a work stage that is connected to the support frame will be used.

[Example] Hereinafter, the present invention will be described in detail based on the illustrated example.

The formwork device according to this embodiment is proposed to form a RC-built silo, and as shown in FIG. The inner space a for the silo is made to stand upright, so that it is formed like a so-called built-in type.

Therefore, as shown in FIGS. 1 and 2UA, the formwork device is designed to partition the inner space a inside the RC structure 'PRA' and to form this space continuously above it. It has a plurality of panels 1 that define wall surfaces that partition the inner space a, and a support frame 2 that supports the panels 1 from the back side.

The panel l defines a wall surface that partitions a predetermined inner space a in the structure A, and therefore the inner space a
It is formed to correspond to the planar shape of.

In the illustrated example, since the planar shape of the inner space a is a substantially rectangular shape with rounded corners, the inner space a
It is said that it is made up of a flat panel 11 that sets a flat part of a wall surface that partitions a wall, and a corner panel 12 that sets a corner part.

Therefore, the panel l in this invention has the above-mentioned inner space a.
If the planar shape of is circular, there will be four arc-shaped panels.

Incidentally, the flat panel 11 in this embodiment is formed by arranging relatively long and narrow panel bodies 13 in the so-called left and right direction in the number of panel bodies 13 that can obtain a predetermined surface area. 14 are integrally connected.

That is, the flat panel 11 is made up of a plurality of panel bodies 13 integrated with a beam 14 on the back surface thereof.

In this embodiment, the flat panel 11 includes a load conversion panel 16 in addition to the panel main body 1, and the load conversion panel 16 will be described later.

The beams 14 are arranged in several stages at appropriate intervals in the vertical direction on the back side of the flat panel 11 when the panel bodies 13 are aligned in the left-right direction.

Therefore, in this embodiment, the flat panel 11 has the following features:
The beam 14 can be so-called suspended by the suspension force applied to it.

As described above, the L flat panel 11 is formed by arranging a plurality of so-called regular length panel bodies 13, so depending on the setting of the flat part of the inner space a, the auxiliary panel 15 may also be installed. .

Corner panel 12 in this example.

This arrangement is necessary because the planar shape of the inner space a is a substantially rectangular shape with rounded corners, and only one side of the corner panel 12 is connected to one side of the adjacent flat panel 11. It is said to be held integrally.

Incidentally, for holding the corner panel 12 to the flat panel 11, well-known means such as bolts and nuts are employed.

In principle, the support frame 2 supports the panel l whose back faces face each other from its back side, and is horizontally expandable and retractable.

First, in this embodiment, the support frame 2 has a vertical member 21 and a horizontal member 22, and the horizontal member 22 holds the expansion/contraction adjustment member 3.

In this embodiment, the vertical member 21 and the horizontal member 22 are the 31st member.
It is constructed as shown in 1m.

That is, the vertical member 21 consists of two pipe-shaped main bodies, and has flanges 24 at appropriate intervals.

Further, the horizontal member 22 consists of a pipe-shaped main body 25, and has claws 26 at both ends thereof.

A wedge 27 is fitted into the wind 26.

That is, the E air distribution 26 is formed to have a hole 26c in its base end 26a parallel to its distal end claw 26b.

The wedge 27 is fitted into the hole 26c.

Therefore, by hooking the distal end claw portion 26b of the claw 26 into the hole 24a of the flange 24 and driving the wedge 27 into the hole 26c of the claw 26 from this state, the vertical member 2
1 and the transverse member 22 can be fixedly connected.

In this embodiment, the expansion/contraction adjustment member 3 is a screw jack, and includes a beam 14 arranged on the back side of the panel I, a horizontal member 22 via a flange 24 on the vertical member 21, The arrangement is maintained between the two.

The extensible adjustment member 3 is horizontally extensible and retractable.

It should be noted that each of the expansion/contraction adjustment members 3 is expanded and contracted independently, and this operation is performed repeatedly.

In this embodiment, the support frame 2 is reinforced with a reinforcing member 4.

This embodiment consists of a horizontal brace 41 and a diagonal brace 42.

The horizontal brace 41 is provided to prevent the rectangular frame formed by the plurality of horizontal members 22 from being deformed by horizontal force.

Further, the diagonal brace 42 is provided to prevent the rectangular frame formed by the plurality of vertical members 21 from being deformed by vertical forces.

In the illustrated embodiment, it is assumed that a work stage 5 is connected to the support frame 2 so that the operator can perform predetermined work safely and reliably.

The work stage 5 is composed of a stage 51 connected to the upper end of the support frame 2 and a stage 52 connected to the lower end of the support frame 2.

For example, the stage 51 is used to perform work such as pouring concrete, and the stage 52 is used to perform finishing work on the wall surface of the inner space a that has already been launched, or this formwork, which will be described later. Enables equipment replacement work.

Therefore, it is desirable that the stage 5 for the above-mentioned work is normally disposed on the support frame 2.

By the way, the formwork device according to the present invention has a stopper structure 6 for the refilling operation.

That is, the stopper structure 6 is incorporated into the load conversion panel 16, as shown in FIG.
are formed together with the panel body 13 and are arranged at both ends of the flat panel 11 (see FIG. 1).

The stopper structure 6 includes the load conversion panel 16
It is assumed that these are respectively arranged near the upper and lower ends of .

The stopper structure 6 also includes a frame 61, a tongue 62, an arm 63, and a stopper 64.

The frame 61 is integrally held in series with the load conversion panel 16, and has 6 arms, which will be described later, in a freely rotatable manner.

The pin 62 has both ends pivotally attached to the frame 61 and rotatably holds the arm 6.

The arm 63 has the pin 62 inserted through its vertical center, and rotates about the pin 62 in the direction indicated by the arrow in FIG. 4.

The stopper 64 prevents the L arm 63 from rotating and protruding its protruding end 6]a toward the inner space a of the structure A. That is, the retracted end 63b of the arm 63 is
This functions to prevent the top of the eJA from protruding upward.

The stopper 64 is also formed to prevent further rotation of the arm 63 when the arm 63 rotates around the pin 52 and reaches a horizontal state.

Therefore, when the outer surface of the frame 61 does not come into contact with an obstacle, that is, a wall surface defining the inner space a of the structure A, the striker structure 6 can move the protruding end 63a of the arm 6. It can protrude above the outer surface of the frame 61, that is, the top end of the structure A.

The formwork device according to this embodiment formed as described above is
It is used as follows.

First, the formwork apparatus is assembled on-site.

In this case, the support frame 2 is first assembled and the panel 1 is held therein.

When assembling the support frame 2, a plurality of vertical members 21 are erected by appropriate means, and a plurality of horizontal members 22 are connected to these.

In this case, at the end of the horizontal member 22, a telescopic adjustment member 3,
That is, the screw jack is retained.

Then, the beam 14 is connected to the screw jack to connect the flat panel 11 in the panel 1 to the horizontal member 22.

Furthermore, corner panels 12 are held at both ends of a selected one of the two flat panels 11.

The screw jack, which is the expansion/contraction adjustment member 3, is contracted to shorten the horizontal member 22 so that the formwork device is made smaller than the inner space a of the predetermined structure vsA.

The assembled formwork device is lifted by a crane or the like and moved to a predetermined location, and then fixedly installed at the predetermined location.

That is, when the formwork device is installed for the first time at a predetermined design position, it is installed at the so-called foot of the formwork device or at the predetermined design position, and is fixed there by means such as temporary fixing. be done.

Then, the upper end side of the formwork device is fixed by appropriate means so that it is positioned at the designed position.

When fixing the formwork device at a predetermined position, the screw jack serving as the expansion/contraction adjustment member 3 is extended to adjust the magnitude of the panel supporting force in the support frame 2.

Therefore, the panel 1 can be installed with just the minimum necessary support capacity.
The durability of the support frame 2 itself is not reduced unnecessarily.

In addition, when the formwork ill is lifted and moved by a crane or the like, wires etc. from the crane are connected to the work stage 5 connected to the upper end of the support frame 2, that is, the vertical member 2I of the support frame 2. Ru.

After a plurality of formwork devices are assembled adjacently as described above, a predetermined amount of concrete is placed between the adjacent formwork devices, that is, between adjacent panels 1.

During the concrete 1 pouring work, work stage 5
Of these, a stage 51 connected to the upper end of the support frame 2 is used.

After the concrete poured between the adjacent panels 1 has hardened, the formwork apparatus is repositioned to extend the concrete structure in both directions, as shown in FIG.

That is, the above-mentioned formwork device is raised and the raised formwork device is reused, and the repositioning of the formwork device is as follows:
It is possible to carry out lifting work using the above-mentioned crane, etc. (Fig. 5 (
b) see).

During the lifting operation, the formwork device is deformed so that it is smaller than the wall surface dimension that partitions the inner space a of the structure A.

That is, the screw jack, which is the expansion/contraction adjustment member 3 in the support frame 2, is contracted and the formwork device is made smaller, so that the panel 1 is separated from the wall surface that partitions the inner space a of the structure A. The above modification is made for the purpose of making it possible to reuse the formwork apparatus and to enable smooth lifting of the support frame 2 by the crane or the like.

When repositioning the formwork 'tc, the formwork device is slightly lifted to the upper end side of the structure A using a crane or the like, and the stopper structure 6 provided at the upper end side of the formwork device is used. Then, the upper end side of the formwork device is once locked onto the top end of the structure A (see FIG. 5(a)).

At this point, the bracket B that has been locking the lower end side of the formwork device is removed from the wall surface forming the inner space a of the structure A, making it possible to reuse it.

For the removal work from the wall surface of the bracket B, a stage 5 of the working stages 5 connected to the lower end side of the support frame 2 is used.
2 is used.

Next, a substantial work of replacing the formwork device is performed.

That is, after the formwork device is hoisted by the crane or the like, and the formwork device is lifted greatly above the top of the structure A, and the formwork device is lifted to a predetermined height, The stopper structure 6 disposed on the lower end side of the formwork device is used to temporarily lock the lower end side of the formwork device on the top end of the structure A (Fig. 5 (0) )
reference).

Then, in this state, the bracket B is arranged at a predetermined wall surface position below the lower end of the formwork device (see FIG. 5 (b)), the formwork device is slightly lowered, and the above-mentioned bracket B is B supports the formwork device.

As a result, the work of replacing the formwork device is completed, and therefore, it becomes possible to continue the upper end of the structure ¥kA upward (see FIG. 5(A)).

At that time, it goes without saying that the screw jack, which is the expansion/contraction adjustment member 3, is adjusted to extend as appropriate, so that the formwork device has a predetermined size, and the strength of the panel supporting force in the support frame 2 is adjusted. be.

Incidentally, when using the formwork device, if the wall surface formed by the panel l is a so-called outer wall, a conventional formwork device is installed on the outside.

In the above-mentioned embodiment, the flat panel 11 forming the support frame 2 is formed by arranging the relatively narrow and long panel bodies 13 in the so-called left-right direction in such a number that a predetermined area can be obtained. Instead, it may be composed of one large panel having a predetermined area, and in this case as well, it is of course possible to use the auxiliary panel 15 in combination, and the load conversion panel having the stopper structure 6. Of course, the incorporation of 16 is not prevented.

(Effects of the Invention) As described above, according to the present invention, a formwork device for forming an inner space in an RC structure includes a plurality of panels that define the wall surface of the inner space of the structure, and a formwork device that forms the inner space of an RC structure. The panel has a support frame that supports it from the back side, and the support frame is horizontally expandable and retractable, and the panel can be rearranged while it is connected to the support frame. RC by supporting it from the back side with a support frame.
It is possible to set the wall surface that forms a predetermined inner space in an RC structure, and when constructing walls in an RC structure, separators are used only in the minimum necessary parts, and other parts are not used. This means that usage can be significantly reduced. S! There are advantages such as it becomes possible to reduce material costs and the work required for this purpose.

Further, according to the present invention, the panel supporting force in the support frame when setting the wall surface forming a predetermined inner space in the RC structure is borne by the horizontal members in the support frame, and the panel supporting force Since the size of is adjusted by a screw jack, which is an expansion/contraction adjustment member held on the horizontal member,
It becomes possible to support the panel with just the right amount of optimal support force, which has the advantage of not unnecessarily reducing the durability of the support frame itself, but also requiring minimal working force.

Further, according to the present invention, the panel is integrally connected and held by the support frame, and the support frame is shrunk in the horizontal direction so that the panel can be separated from the wall surface forming the inner space. Not only does it become possible to rearrange the support frame, but by lifting and moving the support frame, the entire formwork apparatus can be rearranged in less than 1 ms, for example, by lifting work using a crane.
There are advantages that are possible.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the state of use of a formwork device according to the most preferred embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view thereof indicated by the line ■-■ in Fig. 1, and Fig. 3 is a support FIG. 4 is a partially broken and enlarged perspective view showing the state of connection between the vertical member and the horizontal member in the frame, and FIG. , Figure 5 (a),
Figure 5 (0) and Figure 5 (8) are schematic diagrams 4 and 6 showing the procedures for replacing the M-frame device and the status of its use.

Claims (5)

[Claims] (1) A formwork device for forming an inner space in a reinforced concrete structure, comprising a plurality of panels that define the wall surface of the inner space of the structure, and a support frame that supports the panels from the back side. A formwork device characterized in that the support frame is horizontally expandable and retractable, and the panel can be rearranged while it is connected to the support frame. (2) The panel has a flat panel that sets the flat part of the wall surface and a corner panel that sets the corner part of the wall surface, and a beam is connected to the back of the flat panel, and the beam is connected to the flat panel. Claim 1: The support frames are connected.
Formwork equipment described (3) The support frame has a plurality of vertical members arranged in the vertical direction within the inner space, and a plurality of horizontal members in the horizontal direction fixedly connected to the vertical members, and the horizontal member Claim 1, wherein telescopic adjustment members that are horizontally expandable and contractible are held at the ends of the panels, and a panel is connected to the telescopic adjustment members.
Formwork equipment described (4) The formwork device according to claims 1 and 3, wherein the support frame is reinforced with a reinforcing member. (5) The formwork device according to claims 1, 3, and 4, wherein a work stage is connected to the support frame.