JPH03217556A - Timbering construction for reinforced concrete placing mold, and separator fixture to be used for its construction - Google Patents

Abstract

PURPOSE:To simplify the execution of work by arranging separators previously and vertically on a floor surface, to fix the required positions of reinforcements between mold plates, and by performing the fixing and positioning of a counter interval with a set of caps and home ties inserted respectively into both the ends, at the same time. CONSTITUTION:Separators 7 for retaining a set of mold plates 5, 5 at a specified interval are arranged previously and vertically on a constructing floor surface C, and are fixed with the separator fixtures A, A1 of a screwing type or the like at the required positions of reinforcements 6 arranged between a set of the mold plates 5, 5. Besides, at both ends of the fixed separators 7, a set of caps 8, 8 are respectively fitted at specified intervals. Then, by home ties 9, 9 fitted spirally at both the ends of a set of the caps 8, 8 and separators 7, the fixing of the counter interval of a set of the mold plates 5, 5 and vertically setting positioning are performed at the same time. As a result, any complicated preparation and clearance work can be unnecessary.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is applicable to formwork plates used in supporting formwork, for example, to be installed with columns and walls of reinforced concrete buildings. This article describes a shoring method for reinforced concrete I single pouring formwork that facilitates the work of positioning and fixing it in a predetermined location, and the separator fixing method used in this method. (1 No. 10 Lost Techniques) Fig. 5 shows how the formwork for pouring reinforced concrete 1 to the wall (or column) part of the building is supported by the conventional construction method.

The formwork for constructing the wall 50 consists of a set of formwork plates 52 and 52 erected at a predetermined location on the construction floor 51 in a facing manner with a predetermined interval apart, and this erected state is maintained by supporting materials. It is supported and built horizontally.

Reference numeral 53 denotes reinforcing bars, and here, two reinforcing bars are installed in advance in a buried state at a predetermined location on the construction floor surface 51 at a predetermined distance apart from each other in the thickness direction of the wall 50 .

Then, one set of formwork plates 52 and 52 are attached to the reinforcing bars 5
To install it in a predetermined position on both sides of 3, first,
Draw an ink line at a predetermined position on the construction floor surface 51, nail the crosspiece 54 to the floor surface along this ink line as shown in the figure, and place the lower end of the form board 52 along the crosspiece 54 and fix it. Decide on position.

Thereafter, the two formwork plates 52 and 52 are installed with both ends of the separator 55 for maintaining the opposing distance passed through, and 56 are inserted near both ends of the separator 55, respectively. , it is a camp that fulfills the mission of maintaining this opposing distance.

Home ties 57 are screwed onto both ends of the separator 55.
If it is fastened toward the formwork plate 52, both formwork plates 52 and 52
are erected and fixed at a predetermined position with a predetermined spacing between them.

58 is a supporting crosspiece that supports the formwork by withstanding the injection pressure of concrete, and is attached to the back side of the formwork board 52, and as shown in the figure, by means of wedges 59 driven into the wedge holes of the home ties 57,
The state of contact with the formwork plate 52 is fixed. The formwork plate 52 on the right side of the figure is also fixed in the same manner as described above.

(Problem to be solved by the invention) In such a conventional shoring method, in order to determine the position of the form board 52, a black line is drawn on the construction floor 51 in advance, and the floor surface is placed along this black line. A crosspiece 54 for erecting and positioning the formwork board 52
However, after it has been used, the crosspiece 54 has to be removed by pulling out the nails. It had been.

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to eliminate the need for the above-mentioned conventional work of attaching crosspieces for erecting and positioning formwork plates. There is a separator fixing device used for this purpose.

[Yokohama of the invention] (Means for solving the problem) In order to achieve the above-mentioned object, the method for supporting formwork for reinforced concrete casting according to the present invention is such that a set of formwork plates 5.5 are arranged at predetermined intervals. The separator 7 to be held is fixed to the required position of the reinforcing bars 6 which are erected in advance on the construction floor surface C and placed between the pair of formwork plates 5.5 using screws, wedges, etc. A pair of cannobs 8 and 8 were fixed using aluminum, and a pair of cannobs 8 and 8 were inserted into each end of the fixed separator 7 with a predetermined gap between them, and screwed into both ends of the separator 7, respectively. The home ties 9 are used to simultaneously fix the opposing distance between the pair of formwork plates 5, 5 and determine the standing position.

The separator fixing tool A is, for example, a fixing tool that has a hooking part 2 for hooking the separator 7 between both arm parts 1a, 1a in a bridging manner, and a screw hole 3 in the connecting part 1l). It is preferable to have a structure consisting of a main body 1 and a screw rod 4 that is screwed into the screw hole 3 and fastens the separator 7, which is hooked to the hook portion 2, toward the reinforcing bar 6.

(Function) For example, in order to pour reinforced concrete 1 to the wall of a building, a set of formwork plates 5, 5 are erected at predetermined positions on the construction floor surface with a predetermined spacing between them. In order to support the walls, etc., first, separators 7 are screwed or simulated to the required locations under the reinforcing bars 6 that are buried and erected at predetermined locations on the construction floor surface C to reinforce the wall. Separator fixture A, such as formula
It is fixed using Al.

Next, a pair of formwork plates 5.5 with drill holes drilled at positions corresponding to both ends of the fixed separator 7 are placed on both sides of the reinforcing bars 6, and both ends of the separator 7 are marked 1-1. Insert the reinforcing bar 6 into the rill hole, and then screw the tie 9 into the large hole 1 at the end 1j. To fix it in place, J) With the reinforcing bar 6 inserted between both arm parts 1a, 1a, insert the senorator 7 between each hook part 2, 2 provided on both arm parts 1a, 1a. In addition to being hung like a bridge, the connecting portion 1b
When the screw rod 4 screwed into the screw hole 3 is screwed in, the seven lever 7 is fastened and fixed to the reinforcing bar 5.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in Fig. 1.2 showing the separator fixing device A, 1 is the main body of the fixing device, in this case, it has a form in which a band-shaped metal plate is bent into a substantially U-shape, and its both arms l a , la is provided with a hooking portion 2 on the top surface of each tip end side. This hook part 2
has an undercut shape toward the distal end side of the arm portion 1a. Further, a screw hole 3 is provided in the middle of a connecting portion 1b that connects the proximal ends of both arm portions 1a, 1a to each other.

A screw rod 4 is screwed into the screw hole 3, and one end of the screw rod 4 is bent into an I-shape to provide a bent portion 4a for rotation.

FIG. 3 is a longitudinal cross-sectional view showing a state in which a formwork for casting a reinforced concrete wall (or column) B on its construction floor surface C is supported by the method of the present invention.

The formwork plates 5.5 that form both sides of the wall B are made of thick wood boards, Santoitch panels, etc., and are spaced at predetermined intervals corresponding to the thickness of the wall B, and are used to form the construction floor by the method described below. It is erected on surface C.

Reference numeral 6 denotes vertical reinforcing bars with ribs that reinforce the wall B. Two of them are placed at a predetermined interval in the thickness direction of the wall B, and the lower ends of the bars are placed on the floor surface C when pouring concrete. He was killed standing up with the lower end buried in the ground.

Reference numeral 7 denotes a separator for holding a set of formwork plates 5.5 at a predetermined interval, and caps 8, 8 for holding a set of formwork plates 5.5 at a predetermined interval are inserted near both ends of the separator, respectively. has been done.

Then, both ends of the separator 7 pass through the drill holes provided in the formwork plates 5, 5, respectively, and protrude outward from the formwork, and the hoes 1 and ties 9 are screwed onto these protruding ends (thus, one set of The formwork plates 5, 5 are fixed at a predetermined position on the construction floor surface C while maintaining a predetermined facing interval':!:.

Next, the operation of the present invention will be explained with reference to FIG.

First, in this embodiment, each of the two reinforcing bars 6.6 placed side by side in the thickness direction of the wall B on the construction floor surface C is placed at a height of approximately 8 CII 1 from the construction floor surface C. After loosening the tightening of the screw rod 4, insert the separator fixture A between both arms 1a, 1a, and then horizontally straddle the separator 73 between both reinforcing bars 6 and 6, and between both the hook parts 2, 2. If the separator 1 is placed so as to straddle the separator 1 and screwed in with each screw rod 4 in this state, the separator 1 is firmly fixed in a state spanning between the two contracted reinforcing bars 6, 6.

When fixing the separator 7 in this way, separate the longitudinal center of the separator 7 with a drill hole pre-drilled in the formwork plates 5 (depending on the thickness of the wall B to be constructed). In addition to inserting a large J at both ends of Ichiyo 7, there are also people and J porno at both ends.
By screwing the tab f9, the pair of formwork plates 5, 5 are erected and fixed at a predetermined position on the construction floor surface C with a predetermined interval maintained.

Therefore, as in the past, draw a black line on the construction floor to determine the position of the formwork board, and nail the crosspieces for positioning the formwork board to the floor along this black line. Moreover, it is possible to completely eliminate the need for extremely complicated work such as having to remove the crosspieces after concrete is poured, which is a waste of labor, time, and auxiliary materials.

FIG. 4 shows a separator fixing device A of an embodiment of the pond of the present invention]
The difference from the separator fixture A described above is that a wedge 10 is used instead of the screw rod 4 as a means for fastening the separator 7 to the vertical reinforcing bar 6, and the fixture main body 1 is It is not a metal plate but is formed by bending a metal wire.

This wedge 10 connects the arm portions 1a and ia with a distance of 7 as shown in the figure.
If the separator 1 is driven into the gap between the connecting portion 1b and the vertical reinforcing bar 6 as shown in the figure in a state where it is hooked, the separator 1 is firmly fixed to the contracted reinforcing bar 6.

[Effects of the Invention] As is clear from the above explanation, the concrete casting formwork shoring method of the present invention uses a special separator fixing device for this method.
As in the conventional construction method, draw ink lines on the construction floor to determine the position of the formwork boards, and then use the ink lines to mark the positioning of the formwork boards on the floor. A series of extremely complicated preparation and cleanup operations such as removing the crosspieces are completely eliminated.

Instead of this conventional work, we now have a simple and quick work that involves fixing the separator to the bottom of the reinforcing bars that have been erected in advance at a predetermined location on the construction floor using a separator fixture. Just doing it will be enough.

Therefore, according to the construction method of the present invention and the tools developed for this construction method, even unskilled workers (Y workers) can perform the work reliably, and it also contributes to the fact that it does not require the use of wood, which is becoming a valuable natural resource. This has the excellent effect of significantly reducing construction costs compared to conventional construction methods.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. II2I to 3 show an embodiment of the present invention. FIG. 1 is a perspective view of a separator fixture, and FIG. FIG. 3 is a side view showing a state in which the steel sheet is fixed to reinforcing bars, and FIG. 3 is a longitudinal cross-sectional view showing a state in which a formwork for pouring a wall of a reinforced concrete building is constructed by the construction method of the present invention. FIG. 4 is a view corresponding to FIG. 2 showing another embodiment of the separator fixture. FIG. 5 is a diagram corresponding to FIG. 3 showing a conventional example. Symbol 1 Fixture main body 1b Connecting part 3 Screw hole 4a Bending part number Table 1a Arm part 2 Hanging part 4 Screw rod 5 Form plate shrink reinforcing bar (reinforcing bar) 7 Cap 9 Model A1 Separated overnight fixture wall C Separated 1 Tapom tie construction floor surface 50 52 54 56 58 Wall type frame board crosspiece cab 7 crosspiece 51 53 55 57 59 Construction floor surface reinforcing bar separator Pom tie wedge

Claims (2)

[Claims] (1) A construction method in which a pair of formwork plates 5, 5, which are erected to face each other at a predetermined position on a construction floor surface C on which reinforced concrete is to be poured, are fixed at a predetermined position at a predetermined interval, A separator 7 for holding the pair of formwork plates 5, 5 at a predetermined interval is set up in advance on the construction floor surface C, and a separator 7 is installed between the reinforcing bars 6 arranged between the pair of formwork plates 5, 5. A pair of caps 8 are fixed at a desired position using separator fixtures A, A1 such as screw type or wedge type, and are inserted into both ends of the fixed separator 7 at a predetermined interval, respectively. 8 and [registered trademark] and home ties 9 screwed to both ends of the separator 1,
9, a method for shoring a formwork for pouring reinforced concrete, characterized in that fixing the opposing interval of the pair of formwork plates 5, 5 and determining the erecting position are performed at the same time. (2) The separator fixture A has a configuration in which the proximal ends of both arm parts 1a, 1a which sandwich the reinforcing bar 6 from the sides are connected to each other by a connecting part 1b, The separator 7 is placed on the tip side.
A fixing device main body 1 is provided with a hooking portion 2 that is hooked in a bridging manner between both arm portions 1a, 1a, and a screw hole 3 is provided in the connecting portion 1b; , and a screw rod (4) for fastening the separator (7) hooked to the hooking portion (2) toward the reinforcing bar (6).