JPH01284666A - Assembling of beam framework - Google Patents

Abstract

PURPOSE:To facilitate assembling and removal by connecting a pipe tube hooked on the end of a slab at one end and a through tube fixed on the outside of a separator penetrating a beam with a vertical pipe and supporting a beam side framework with the vertical pipe. CONSTITUTION:A timbering device is constituted of a vertical pipe 1, a heat metal 2 fitted at the upper end, and a skirt metal 3 fitted at the lower section. The metal 2 is fixed on the lower face of a slab 42 with a nail, a mold framework is formed with a side framework 4 and a bottom framework 41. Only a separator 5 on the lowest stage is assembled, the metal 3 is fitted to the fixing metal 51 of the separator 5. The vertical pipe 1 is penetrated through the penetrating tube 31 of the metal 3 and inserted into the fixing tube 21 of the metal 2. The pipe 1 is screwed, the frame 4 is held by the pipe 1 from the side via a cleat pipe 53. The assembling and removal of a beam framework can be facilitated.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a method for assembling beam formwork.

<Prior Art> In order to place concrete for beams, a method as shown in Fig. 7 is generally adopted.

That is, each formwork a facing each other by a separator b,
A is passed through the separator b, and both ends of the separator b are tightened to formworks a and horizontal pipes C installed on the outer surface of a through washers and nuts, and the opposing distance between the formworks aXa is maintained constant.

<Problems to be Solved by the Present Invention> The conventional formwork framework techniques described above have the following problems.

<A> As the height of the beam increases, the number of separators b and home ties installed increases, and their installation and removal requires a great deal of time and effort, making it uneconomical.

Since beam reinforcing bars cannot be installed if they are crossed, remove all separators and home ties except for the bottom of formwork A, then drop in the beam reinforcing bars, and then install intermediate separators B and home ties. There is.

However, the work of installing the intermediate separator b, etc. requires at least two workers to pass between the beam reinforcing bars and insert it between the formwork aXa while giving signals, which takes a lot of time and effort. It takes.

<C> When the beam has an SRC structure (steel reinforced steel structure), it is necessary to provide a hole e for penetrating the separator in the beam steel frame d to be installed in advance.

Therefore, it is necessary to consider the position of the through-hole e and to perform drilling work.

<2> Various devices have been proposed for restraining the protrusion of the formwork aXa without using the separator b.

However, when constructing using this type of restraint device, it takes time to assemble and disassemble the restraint device due to the large number of component parts.
Moreover, there is a problem in that it tends to loosen when subjected to vibration.

Furthermore, the high price of the restraint device also has the disadvantage of increasing construction costs.

OBJECTS OF THE INVENTION The present invention was made in order to solve the above problems, and an object of the present invention is to provide the following method for supporting beam formwork.

<A> A method of assembling beam formwork that can significantly reduce the number of separators, home ties, etc. to be installed. Structure of the Present Invention: Assembling Method of Beam Formwork That Can Easily Respond to Different Dimensions> Hereinafter, an embodiment of the method of the present invention will be described with reference to the drawings.

<A> Device used in the assembly method In the assembly method of the present invention, a support device shown in FIG. 1 is used.

That is, the support device is composed of a vertical pipe 1, a head metal fitting 2 attached to the upper end of the vertical pipe 1, and a skirt metal fitting 3 attached to the lower part of the vertical pipe 1.

<Exposure> Vertical pipe As the vertical pipe 1, a known metal pipe can be used.

Therefore, its cross-sectional shape can be either round or square.

<C> Head metal fitting The head metal fitting 2 is composed of a pipe fixing tube 21 and an eave plate 22 attached to the upper end of the pipe fixing tube 21 in a direction perpendicular to the pipe fixing tube 21.

The pipe fixing cylinder 21 is a short cylindrical body having an inner shape equal to the outer shape of the vertical pipe 1.

A screw hole 23 is drilled in the side surface of the pipe fixing cylinder 21 for fixing it to the vertical pipe 1.

On the other hand, the eaves plate 22 is a plate that covers the upper surface of the pipe fixing cylinder 21 and protrudes outward in the form of an eave.

That is, the upper end of the pipe fixing cylinder 21 is closed by the eaves plate 22.

The length of the eaves plate 22 protruding outward from the pipe fixing tube 2 is set to the following length.

[Outer diameter of the horizontal pipe that fixes the beam formwork] + [Thickness of the formwork] Then, a downward hook 24 for fixing the formwork and an upward hook 25 for fixing the slab are formed at the tip of the eave board 22. .

<2> Hem metal fitting The hem metal fitting 3 is composed of a pipe penetrating tube 31 and a shelf board 32 attached in a direction perpendicular to the tube 31.

The pipe penetration tube 31 is a short tube having an inner shape equal to the outer diameter of the vertical pipe 1, and passes through both the upper and lower sides.

A threaded hole 33 for fixing the vertical pipe is formed in the side surface of the pipe penetrating cylinder 31.

The length of the shelf board 32 is formed to the following length.

[Outer diameter of the horizontal pipe that fixes the beam formwork] - [Thickness of the pipe penetrating tube 31] A backing plate 34 is formed at the tip of the shelf board 32 in a perpendicular direction and facing downward.

A slit 35 from below is opened in the center of this backing plate 34.

<Operation of the present invention> Next, an assembly method for assembling a beam of an RC structure using the above-mentioned supporting device will be described with reference to FIG. 2 and subsequent figures.

<A> Assembling the beam formwork (Fig. 2) Using the well-known side formwork 4 and the bottom formwork 41, the formwork is performed by connecting it to the slab 42.

During this framework, the eave plate 22 of the head fitting 2 is fixed to the lower surface of the slab 42 with nails.

At this time, the upward hook 25 at the tip of the visor plate 22 is engaged with the end of the slab 42, and the downward hook 24 is engaged with the inside of the side formwork 4.

<Opening> Assembly of separators (Fig. 3) Only the lowermost separator 5 is assembled by known means.

At this time, the hem fitting 3 is attached to the fixing fitting 51 of the separator 5.

The attachment is carried out by engaging the slit 35 of the backing plate 34 with a home tie on the outside of the separator 5.

As a result, the backing plate 34 is connected to the outer surface of the side formwork 4 and the horizontal pipe 52.
It can be securely fixed by being sandwiched between the

<C> Attaching the vertical pipe (Fig. 4.5) Attach the crosspiece pipe 53 horizontally to the side surface of the side formwork 4.

On the other hand, the vertical pipe 1 is passed through the pipe penetration cylinder 31 of the hem fitting 3 from below.

Then, the upper end of the vertical pipe 1 is inserted into the pipe fixing cylinder 21 of the head metal fitting 2.

If the vertical pipe 1 is screwed in this state, the vertical pipe 1 will firmly hold the side formwork from the side via the crosspiece pipe 53.

<Other Examples> Although the case where a square pipe is used has been described above, the pipe fixing tube 21, the pipe penetrating tube 31, and the vertical pipe 1
It is also possible to form it with a circular cross section.

Furthermore, as shown in FIG.
It is also possible to adopt a structure in which the fixing is performed by driving a wedge 37 inside.

<Effects of the Present Invention> Since the present invention is as described above, the following effects can be expected.

(a) When concrete is poured into the beam formwork, the pressure is first transmitted to the vertical pipes via the crosspiece pipe group.

However, since the upper end of the vertical pipe is engaged with the end of the slab, it will not fall outward.

Furthermore, since the lower part of the vertical pipe is fixed to the separator provided at the lowest stage, it is possible to reliably prevent the formwork from protruding due to concrete pressure.

<Exposure> When constructing a steel-framed concrete structure, according to conventional construction methods, it was necessary to drill holes in the beam steel in advance for penetrating intermediate separators.

However, according to the construction method of the present invention, by using vertical pipes, it is possible to eliminate the need for intermediate separators other than the lowest stage, so there is no need to open holes for penetrating the separators in the beam steel frame.

<C> Since there is no need to insert an intermediate separator etc. after dropping the reinforcing bars into the formwork, the manufacturing time and dismantling time of the formwork can be significantly shortened.

(2) It is related to the total length of the vertical pipe (it is configured so that it can be adjusted to the height of the beam using the hem metal fittings).

Therefore, even if the height dimensions of the beams are different, it can be easily handled.

<E> Assembly can be completed by simply engaging the hook at the upper end of the vertical pipe with the slab and engaging the surface of the lower backing plate with the home tie.

Therefore, the beam formwork can be easily assembled and removed.

It can be applied not only to formwork for beams, but also to formwork for a variety of other purposes, making it highly versatile.

[Brief explanation of the drawing]

Figure 1: Perspective view of the support device used in the method of the present invention Figures 2 to 5: Explanatory diagram of construction method Figure 6: Explanatory diagram of another embodiment Figure 7 = Explanatory diagram of conventional technology b'l

Claims (1)

[Claims] (1) In the method of assembling a beam formwork by connecting it to a slab, a pipe fixed tube with one end fixed to the end of the slab and a through tube fixed to the outside of a separator that penetrates the beam are used, and the pipe is passed through the through tube. A method of assembling beam formwork in which both cylinders are connected by a vertical pipe, and the beam side formwork is held by this vertical pipe.