JPS6133173Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a support device for formwork, and more specifically, it is used when pouring concrete to form the framework of ceiling beams, floors, etc. of steel-framed reinforced concrete structures, such as high-rise buildings. The present invention relates to a formwork support device particularly suitable for supporting side plates.

Generally, the design of formwork for concrete pouring is related to shoring, and it is necessary to ensure sufficient safety against the load until the concrete structure is completed, taking into consideration the shape and dimensional errors of the completed structure and the structure of the formwork. It must be designed firmly so that it does not go awry. The loads that formwork and shoring receive during construction include loads from the formwork itself, concrete, workers, construction equipment, etc., vertical loads due to impact, wind pressure, slope, water pressure, vibrations during work, etc. The resulting lateral loads and
and concrete lateral pressure, and it is extremely difficult to construct a formwork support device that can sufficiently support these loads. Furthermore, horizontal tightening shoring uses separators and clamps called form ties, but the work of attaching and detaching them is troublesome and difficult.
The large number of parts causes an increase in costs, and there is a desire to develop a support device that is easy to attach and detach, and is easy to construct and inexpensive.

In other words, when holding the formwork, multiple rods that serve as separators that are embedded into the building frame are installed horizontally, and these rods are tightened with clamps, which makes the work of attaching the separators and clamps cumbersome, and parts The number of points increased, which caused an increase in costs. In addition, after the formwork is removed, the ends of the separators are exposed on the outer surface of the building frame, and these ends must be cut and finished, which significantly reduces work efficiency and reduces building efficiency. This is also a cause of increased construction costs.

Therefore, the purpose of the present invention is to support formwork such as side plates, which has a small number of parts, is easy to install and remove, and can significantly reduce construction costs when forming the frames of ceiling beams, floors, etc. of steel-framed reinforced concrete structures. The purpose is to provide equipment.

In order to achieve this objective, the configuration of the present invention is such that the top part of the vertical end member is directly connected to the steel beam via the connecting member, and the lower part of the end member is connected to the main member, and the end member is connected directly to the steel beam through the connecting member. A side plate fixing member is arranged in a direction perpendicular to this, a hole is bored in the end member on the side facing the side plate fixing member, a protrusion is provided in the other side plate fixing member to face the hole, and the protrusion The shaft member and the side plate fixing member are removably connected by fitting into the hole.

An example of implementing the present invention will be described below with reference to the drawings.

Shoring using the formwork support device of the present invention 16
is shown in FIG.

According to FIG. 1, when forming a frame 9 such as a floor 35 and beams 8 in a steel reinforced concrete structure such as a high-rise building by pouring concrete, the concrete pouring forms 10, 11,
12 is supported by the shoring 16, and at the same time, steel studs are placed on the scaffolding 17 suspended from the shoring 16.
Welding, reinforcing work, assembling and dismantling formwork, pouring concrete, and finishing work can also be performed continuously.

The shoring 16 consists of a horizontal rectangular parallelepiped or hollow quadrangular column-shaped beam extension member 5, thick members 18 standing on both sides of the extension member 5, and a direction intersecting the extension member 5. Joist supports 19a and 19b extending to
, side plate fixing members 20 and 21 that are detachably connected to the end thick member 18 and the side plates 10 and 11, and a mounting member 22 that attaches and detaches the large pull member 5 to the steel beam 3 side.
It consists of 23. In some cases, it is possible to provide a support member for a support beam on the upper part of the thick member 18.

The tops of the end members 18, 18 are removably connected to a rod or other connecting member 24, and this connecting member 24
is connected to the top of the steel beam 3 by welding, bolts and nuts, or other means, thereby connecting the end member 1 to the top of the steel beam 3.
8 and the main pull member 5 are connected to the steel beam 3.

In FIG. 1, the method of attaching the large tension member 5 and the hanging scaffold 17 is to first connect the large tension member 5 to the steel beam 3 on the ground surface via bolts 26 and attachment members 22 and 23, and then A hanging scaffold 17 is connected in advance to the arm or bracket 2 of this large pull member 5, and the steel beam 3, the large pull member 5, and the hanging scaffold 17 are connected in advance.
The three members are hoisted together by a crane or the like, and in this state, the steel beams 3 are temporarily fixed to install the large tension members 5 and the suspended scaffolding 17 at the frame forming position.

Next, details of the formwork support 16 will be explained.

Thick members 18 are removably connected to both sides of the large tension member 5 through sockets 25 having a U-shaped cross section, bolts 27, and nuts 28, and the thick end members 18, 18
When it is fixed to the large tension member 5 and assembled, the end members 18, 18 will stand up on both sides of the large tension member 5.

Joist supports 19a and 19b are disposed approximately at the center and on both sides of the large tension member 5 in a direction perpendicular thereto.

The central joist support material 19a has a pin on the bottom surface of the end.
A projection 29 such as a hook is provided in a protruding manner, and by inserting this projection 29 into a hole formed on the upper surface of the extension member 5, the joist support material 19a is connected to the upper surface of the extension member 5.

Similarly to the central support member 19a, the support members 19b for the joists on both sides are made of a steel material having an L-shaped cross section, for example, and have their lower end surfaces in contact with the upper surface of the large tension member 5, and the side surfaces of the end portions are A protrusion 37 such as a pin or a hook is provided to protrude laterally, and this protrusion 37 is inserted into a gourd-shaped hole 3 formed inside the lower part of the thick member 18.
8 so that the support material 19b for the joist is connected to the end member 18.

The gourd-shaped hole 38 consists of a part with a large inner diameter and a part with a small inner diameter.If the protrusion 37 is inserted into the part with the larger inner diameter and then lowered to the part with the smaller inner diameter, the flange at the tip of the protrusion 37 will adjust to the inner diameter. Since the diameter of the joist support material is larger than the diameter of the small part of the joist, the support material for the joist is prevented from falling out.

This joist support material 19b is the formwork barrel plate 1 at the lower end.
2 and the side plate 11, it also serves as a side plate fixing member. Therefore, the relationship between the protrusion 37 and the hole is included in the support device of the present invention.

One or more hollow pipe-shaped attachment members 23 pass through the main member 5 and protrude upward, and the lower end of the steel beam 3 has a threaded tube facing the attachment member 23. A bolt 26 inserted from the lower end of the large tension member 5 passes through the attachment member 23, and its threaded end is screwed into the screw of the attachment member 22 on the steel beam 3 side. As a result, the large tension member 5 is detachably connected to the H steel beam 3 via the attachment members 22 and 23 and the bolt 26.

However, the mounting members 22 and 23 are hollow bodies 40 and 41 made of metal, synthetic resin, rubber, etc., respectively.
The bolts 26 are inserted into the hollow bodies 40 and 41. Therefore formwork 1
When concrete is placed in areas 0, 11, and 12, steel beams 3 and attachment members 2 are placed inside this concrete.
2. Although the hollow bodies 40 and 41 are embedded, concrete does not adhere to the bolts 26 and can be removed once the concrete has hardened. (1st
Figure) The thick member 18 is composed of a hollow rectangular body, etc.
This top part may be directly connected to the connecting member 24, but the connecting members 18a, 18b, 18n, which are made up of intermediate columns for adjusting the length in the vertical direction.
It is possible to connect them by inserting them or by welding, joints, etc. (Fig. 4) When connecting the connecting member 24 to the thick member 18, insert the cylinder 42 into the top, fix the support plate 43 to the cylinder 42, and attach the support plate 44 to the upper surface of the support plate 43. It is possible to abut them and connect them using bolts 45 and nuts 46 or other methods, and connect the connecting member 24 to the upper end support plate 44 by welding or other methods. A bracket 49 is connected to the support plate 44 via bolts 47 and nuts 48, and a beam 50 is connected to the bracket 49. (Fig. 4) Next, to explain the support device of the present invention in detail, side plate fixing members 20 and 21, which are horizontal thick parts, are disposed inside the thick end member 18 in a direction perpendicular thereto. The fixing members 20 and 21 are made of elongated frames having an L-shaped cross section, each having a notch 51 formed at its end, and a protrusion 52 protruding from the inside thereof.

On the other hand, gourd-shaped holes 38 are bored in the vertical end member 18 at arbitrary intervals.
The projection 52 is inserted into the hole. That is, when the protrusion 52 of each side plate fixing member 20, 21 is inserted from the large diameter part of the hole 38, and then the protrusion 52 is lowered and fitted into the small diameter part, the flange of the protrusion 52, which has a larger diameter than the small diameter part, will not come out. As a result, each side plate fixing portion 20, 21 is removably connected to the thick member 18. In this case, since there is a notch 51, even if the side plate fixing members 20 and 21 are L-shaped frames, they can be inserted into the thick member 18 through this notch 51, so that they are surely held in the perpendicular direction. .

Next, screw holes are bored in the side plates 10 and 11, which are the formwork, and an L-shaped hook member 55 is hooked to one of the side plate fixing members 21 via a hook 54, and the vertical piece of this hook member 55 is A hole is drilled, and a bolt 58 inserted through this hole is screwed into the screw hole, whereby the side plates 10 and 11 are drawn to and held by the side plate fixing member 21 via the hook member 55. There is. (Figures 2 and 3) In the above-mentioned shoring 16, the scaffolding device 17 performs the reinforcement work of reinforcing bars 59 and 60, rivets and welding of the steel frame parts, and also performs all the work from assembling to dismantling the formwork. perform the work.

To assemble the formwork, first, hold the end members 18, 18 and the support members 19a, 19b for the joists on the large pull member 5, and then attach the side plate fixing members 20, 21, which are the horizontal end members, to the end members 18, 18. Keep it fixed. Next, the bottom plate, which is the formwork 12, is placed horizontally on the support materials 19a and 19b for the joists, and then the side plates, which are the formworks 10 and 11, are placed inside the end members 18 and 18, and the hook members 55 are placed on the side plates. It is held on the side of the end thick members 18, 18 through it.

From this state, concrete is poured into the formworks 10, 11, 12, and when it hardens, the formworks 10, 1
A frame 9 having a shape divided into sections 1 and 12 is molded. Next, when disassembling this, remove the support plate 43 and the end member 18 from the support plate 44, remove the lower end of the end member 18 from the large pull member 5, and further remove the end member 18 from the support plate 44. Then, remove the side plate fixing members 20, 21 and the side plates forming the formworks 10, 11. Also, when the bolt 26 of the large pull member 5 is removed, the formwork 12
The barrel bottom plate and the main pull member 5 are removed from the steel beam 3 side.

In the above case, when all the formworks 10, 11, 12 are dismantled, the connecting rod 24, the mounting members 22, 2
3. The hollow bodies 40 and 41 are embedded in the frame 9.

As described above, the effects of the formwork supporting device according to the configuration of the present invention are as follows.

Since the end member is connected to the main member at the bottom and the steel beam at the upper part via the connecting member, even if a lateral load is applied from the formwork due to concrete pouring, this load will be transferred to the steel beam. It is supported by the beam, the thick member, the connecting member, and the main member.

Therefore, it is not necessary to erect a separator in concrete and tighten the separator with a clamp as in the conventional method.

Since there is no need for a large number of separators as in the conventional method, there is no need to cut the exposed portions of the separators after forming the frame, or to perform other operations such as forming.

Since the end member is fixed to the main member and connected to the steel beam via the connecting member, there is no need to provide supporting members such as supports from the ground or subfloor surface to support the end member, and the formwork There is a large space below the support device, allowing smooth work on the subfloor surface.

Since the end member and the side plate fixing member can be attached and detached through the hole and the protrusion, the work of attaching and detaching them is significantly improved.

Unlike conventional methods, there are no separators or clamps, and there is no need for supports to support the end members, etc. Furthermore, there is no need for separate connection devices between the end members and the side plate fixing members, so workability is good. In addition, the number of parts is small, saving labor and reducing costs.

[Brief explanation of the drawing]

Figure 1 is a front view of shoring using the formwork support device of the invention, Figure 2 is a side view of Figure 1, Figure 3 is an enlarged perspective view of Figure 1, and Figure 4 is the invention of the invention. FIG. 2 is an enlarged perspective view of a thick member including a support device for a formwork. 3...Steel frame, 5...Large member, 18... Thick member, 20, 21... Side plate fixing member, 24... Connection member, 38... Hole, 39... Protrusion, 51... Notch.

Claims (1)

[Claims for Utility Model Registration] (1) The top of the vertical end member is connected to the steel beam via the connecting member, and the lower part of the end member is connected to the main member, and the end member is connected to the end member. A side plate fixing member is arranged in a direction perpendicular to this, a hole is bored in the end member on the side facing the side plate fixing member, and a protrusion is provided in the other side plate fixing member to face the hole,
A support device for a formwork, in which the end member and the side plate fixing member are removably connected by fitting the protrusion into the hole. (2) The formwork support device according to claim 1, wherein the hole has a large diameter portion with a large diameter and a small diameter portion with a small diameter. (3) The side plate fixing member consists of an elongated frame with an L-shaped cross section, and a notch is provided at the end of the frame so that the side plate fixing member is inserted into the hollow rectangular end member through the notch. A formwork support device according to claim 1 of the registered utility model.