JPS59465A - Method and beam for supporting mold frame - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork support method and a beam, and more particularly to a formwork support method and beam suitable for use as a beam construction in a steel reinforced concrete structure, such as a high-rise building.

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 in such a way that it will not go awry.

When constructing beams for high-rise buildings using steel-framed reinforced concrete, the loads that the formwork receives during construction include the weight received from the formwork itself, concrete, workers, construction machinery, etc.
Formwork support is sufficient to support vertical loads due to impact, lateral loads due to wind, slope, fluid pressure, vibrations during work, etc., and thin concrete soil. equipment is required.

Conventionally, a beam supporting the comfrey slab has been used as a member to support this formwork, but this beam usually weighs 35 to 9 in 100, and it is difficult to work when installing it in the formwork. Unfortunately, this causes an increase in construction costs, and if the bottom of the beam is sloping, it is difficult to assemble many straight beams to match the angle, making the installation work troublesome. However, there was a drawback that the number of parts increased.

Another formwork support method is to use a pipe support with Ei from the ground surface or lower floor to the bottom of the formwork as a vertical support, and to install a single pipe or square pipe on this pipe support. A pipe was provided, but in this case, the work of assembling and dismantling the shoring itself is troublesome, and the cross-sectional strength is insufficient.

Another problem with this shoring is that the angle cannot be adjusted if there is an angle under the beam.

Therefore, the object of the present invention is to provide easy installation and disassembly;
To provide a formwork support method and beam suitable for use in beam construction of concrete buildings, which have a small number of parts, are light in weight, and can adjust the angle each time whether the bottom of the beam is horizontal or inclined.

In order to achieve this object, the present invention is characterized in that a beam having hook members connected to both sides of a horizontal main body so as to be adjustable in angle is used as a formwork support member under the beam.

Embodiments of the present invention will be described below with reference to the drawings.

Figures 71 to 3 are examples of beams used for supporting joists under the beam when the lower surface of the beam is horizontal.

That is, the beam A consists of a horizontal body (1) and a flood hook (21 (2+) fixed on both sides of this body (1).

The main body (1) is formed into an H steel shape, while the hook (2) is formed into an L shape.
It is formed from a shaped plate, and a claw (3) is formed at the outer end of this plate.

The proximal ends of hooks (21(2)) are fixed to both ends of the main body (1) via bolts or pins (4H4).

When using the above beam A for the joist under the beam, proceed as follows.

That is,】・As shown in Figure 1, the building frame beam (5
) is supported by the formwork (6) (force (8)) on its lower and side surfaces.
, the steel frame (F) has a socket-shaped mounting piece f9) (1
0) is fixed, and the bolt (11) passes through the large tension member (12) and is screwed together through the pieces (9) and (10). The large tension member θ2 is fixed to the steel frame (F) in a horizontal state. Thick members are erected at the top of both ends of the large tension member (121).
This end member is designed to support the formwork (6) on both sides.

Ohiki member (12) VC is vertically supported by (+3) (+3
1 is removably installed vertically via a pin (171), a horizontal support θ4) is fixed to this support (13) (+3), and a handrail support stands at both ends or one side of this support (14). In addition, a scaffolding board is erected on the support column (I4), and on this scaffolding board, work from assembling to dismantling the formwork, riveting of the steel frame, welding, reinforcing work, and concrete pouring and finishing are carried out. Now I am able to perform all of the following tasks.

A plurality of large tension members (+21) are arranged in a row under the beam in the above-described manner, and hooks (2) in beam A are hung on these large tension members (+21), thereby one beam is aligned. The upper surface of the beam body (1) supports the lower surface of the formwork (8), so that the beam body (1) supports the bottom of the beam.In other words, the beam A is used as a joist member.

In some cases, a pipe-shaped joist member (15) or column-shaped joist member (16) may be used in parallel with this beam A.
You can.

Beam A, which is used as a joist under the beam in the above horizontal position, can be detachably attached to the main member 02) via hooks (2), which greatly improves the attachment and detachment work, and the structure is simple. is easy and cost-effective.

In addition, if aluminum or a similar metal is used as the material, it will be lightweight and workability will be good in attaching and detaching, transporting, etc.

Next, Figures 1 to 4 and 6 show embodiments of beams that can follow the inclined surface when the lower part of the beam is inclined.

In Fig. 4, a plate-shaped hook (19) is fixed to the left end of the beam body (18) in the shape of ■ () through bolts T120+ (20), and a connecting fitting (2I) is attached to the right end.
) is fixed in an angle-adjustable manner through two bolts (2), and this connecting fitting (c) has another connecting fitting (c) which is a horizontal joint.
23) is fixed via the bolt (24), and the hook (2), which is the same as the fang 3m, is attached to the other side of this connection fitting (23) and attached to the bolt (23).
) has been fixed.

The hook α1 has a claw (A) at the outer end, and a notch is formed on the outside to engage with the upper surface of the pull member α. A long hole (to) is formed in either the beam body a8 or the hook aI, and when the bolt (a) is passed through this long hole (b), the hook uI rotates for 2 seconds. This allows the upper surface angle of the hook α9 to be freely adjusted according to the angle under the beam.

Similarly, the connection fitting (211) is connected to the beam body (I8) through the elongated hole C.
Drill one or more 29I C3■, and insert this long hole (2g
The angle of the connecting fitting (211) can be finely adjusted via the bolt (22) that passes through the long hole (2gl (
30) have different sizes, bolt fi2),'-(22
31p), shaping its diameter accordingly during movement.

It is preferable that the upper and lower surfaces of the connecting fitting (211) are formed to match the slope of the bottom of the beam, but a simple rectangular or square plate may also be used.

,! Fig. f-5 is substantially the same as the beam in Fig. 4, except that the same hook (2) as in Fig. 3 is directly fixed to one end without using a connecting fitting (21).

That is, attach the hook (2) to the beam body (on the right side of the bolt (
2) Fix the angle freely through the beam body (181) or the hook (2) through the elongated hole (321).
(33) (34) are drilled and this long hole (321 (33)
If the bolt (8)j is set so that it can move within (34), the angle of the hook (2) can be finely adjusted according to the angle of inclination under the beam. In this case, a partially chamfered portion (G) is formed on the upper surface of the hook (2), and this chamfer forms the hook (2) under the beam.
It is preferable to make it so that it can come into contact with it.

Incidentally, (36) is a square prism-shaped large-length member, which is the same as the 1-go large-sized member (121) in Fig. 1.

]・Figure 6 shows that the lower surface of the beam (5) is a horizontal surface (5a) and an inclined surface (
56), in order to support the bottom of this beam, J-2IN
This shows the state in which the beam shown in Figure 4 and the beam shown in Figure 4 of Figure 7 are used.

That is, the formwork (8) is held at the bottom of the horizontal surface (5a),
This formwork (8) is supported by the upper surface of the beam body (1) and the hook (2), and the hook (2) is opened to the main pull member 02). On the other hand, a part of the horizontal plane C5α) and the inclined surface (56) are respectively supported by the upper surface of the connecting fitting (23) and the upper surface of the beam main body (18), and the connecting fitting (23) and the beam main body (181 are connected They are connected by a metal fitting (21), and the doll beam main body (]]8 and the connecting metal fitting (23) are pulled 1'/+ on the upper surface of the tension member t121 via a hook (2).

Note that the beam (5) may be supported on both sides by column-shaped joist members (I6) installed between the large tension members (121).

As mentioned above, since the beam according to the present invention has a hook connected to the beam body directly or via a joint member so that the angle can be freely adjusted, when this beam is used to support a beam bottom or a slab, the beam bottom end is Easy to install whether the bottom surface of the slab is horizontal or sloped. In addition, since the formwork can be supported at that size by hooking the hooks to the large tension members, the installation and removal work is significantly improved, speeding up the assembly and dismantling of the shoring work, saving labor, and reducing work costs. This can be achieved together.

In addition, since the structure is simple, the number of parts is small and the manufacturing cost of the beam is low, and it is also lightweight, making it easy to transport and transport the beam.
It is possible to improve the carrying out work.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional side view of the beam in use as a formwork support device, Figure 2 is a plan view of Figure 1, Figure 3 is a front view of Figure 1, Figures 4 and 5 are of the beam. Front view of each beam according to other embodiments installed in an oblique position, Figure 6 is the same as figure 2 and fang 5.
It is a partially cutaway perspective view of the beam according to the figure installed under a beam having an inclined surface. Representative Patent Attorney Izumi Amano

Claims (3)

[Claims] (1) Formwork support characterized by attaching a plurality of large tension members to a steel frame in a detachable manner, constructing a beam L whose angle can be freely adjusted between the large tension members, and supporting the formwork under the beam. Method. (2) A beam with angle-adjustable V-shaped hooks connected directly or via a joint member to both sides of the water body. (3) The beam according to claim 2, wherein the beam body and the hook are connected through a bolt and an elongated hole.