JPH0489968A - Form timbering structure using truss batter - Google Patents

Abstract

PURPOSE:To facilitate execution of works by pressing a V-section truss batter having two lower chords and one upper chord through a wedge, and thereby contacting the two lower chords with the outer surface of each sheathing board. CONSTITUTION:Two lower chords 61 and one upper chord 62 having a little larger dia. are joined through a number of web members 63, and a truss batter 6 is formed having an inverted V section. The tail of a form tie 3 to provide a certain distance between sheathing boards, 1, 1 in cooperation with a separator 2 is stretched longer than the tallness of this truss batter 6. At the tail, further, a wedge 5 for pressure contact of the truss batter 6 to the upper chord 62 is fitted in such a way as capable of being inserted and drawn off. The truss batter 6 is pressed by driving this wedge 5, and sheathing board 1 is put in pressure contact by the two lower chords 61, 61. This permits suppressing the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a formwork support structure using truss end pieces.

``Prior art and the problem to be solved by the invention'' For the formwork support that holds the weir plate on the outside, vertical and horizontal beams made of single pipes, square beams, etc. are used. The material is fixed to the outside of the weir plate by screwing a nut into a form tie that cooperates with the separator to ensure the distance between the weir plates, and tightening the washer applied to the end piece with the nut. Also,
Sometimes, the form tie is provided with a wedged metal holder, and the end piece is received by the metal holder and fixed by tightening with a wedge or the like.

However, due to the strength of the formwork, a considerable number of end pieces are required, and these pieces must be temporarily installed at each location by hand as described above, and then removed again after construction. , it requires a large number of people, a lot of effort, and is quite heavy, so the work is not easy.
In today's labor shortage, urgent improvements are desired.

The present invention seeks to satisfy such a need.

"Means for solving the problem" The invention of claim 1-- is based on two parallel lower chord members and one
The upper chord of the strip has an inverted V-shaped cross section, and a truss end is provided to bring both lower chords into contact with the outer surface of the weir plate, and also works with the separator to ensure the distance between the weir plates. The rear end of the form tie is extended longer than the back of the truss end, and the rear end of the form tie is equipped with a wedge or a taper pin which can be freely inserted and removed to bring it into pressure contact with the upper chord of the truss end.

Therefore, the invention of item (i) of claim 2 is based on two parallel inventions.
The truss has a lower chord member and one upper chord member, and has a V-shaped cross section, and a truss end is provided that brings both the lower chord members into contact with the outer surface of the weir plate, and the end of the truss is located outside of the truss end member. An appropriate round piece such as a single pipe or a round piece is provided to intersect with the thick upper chord member, and a fastening hardware is provided to connect the upper chord member and the round piece. The trowel-shaped member that straddles the trowel has a hook formed at both ends to engage with the upper chord member, and a tightening bolt is screwed into the middle part.

"Function" Since the structure is as described above, each truss end is supported by a form tie with one upper chord, and is pressed with a tie or taper pin. The bottom chord of each truss is then pressed against the weir plate by the two lower chord members.As a result, each truss end exhibits sufficient mechanical strength as a whole. The end piece produces the capacity of about two conventional end pieces.

Accordingly, in the invention of claim 2, the truss end and the end member intersecting therewith are strongly integrated with the fastening hardware, and the weir plate is held properly on the outside. .

"Example" The drawing shows an embodiment for building a wall.

Part 1 Figures 1 to 4 show a first embodiment of the invention as claimed in claim 1, and in the figures, 1 is a weir plate, and 2.3 is a separator for ensuring the distance between the weir plates. 4 is a U-shaped metal piece connected to the rear end of the form tie; 5 is a wedge that is inserted through the U-shaped metal piece so that it can be freely inserted and removed; This is a truss end that is pressed against the outside surface of the weir plate.

The truss end 6 is made by joining reinforcing bars, and is made by joining two lower chord members 61 of an appropriate diameter and one upper chord member 62 of a slightly larger diameter through a number of appropriate belly members 63. It is formed into a truss with an inverted V-shaped cross section.

The form tie 3 has a nut 31 screwed onto the T&end, and the rear end of the form tie 3 is passed through the middle part of the narrow U-shaped metal fitting 4 and supported by the nand 31, thereby fixing the U-shaped metal fitting 4 at the truss end. Thick 6
A slit 41 is formed in the longitudinal direction on both sides of the U-shaped metal fitting 4, and the pattern 5 is inserted into and removed from the slit. It is made to come into pressure contact with the upper chord member 62 of the truss end 6 held in the letter-shaped hardware 4.

The wedge 5 is provided with a stepped notch fJl (51) on the inner surface of the tip.
It is adapted to connect the truss ends 6 and attach reinforcing bars. Note that this notch 51 is not essential and may be omitted.

The weir plate 1 is made of thin reinforcing bars arranged in a lattice shape to form a menu 11, and a notebook 2 such as a synthetic resin sheet is pasted on the menu, and is flexible and lightweight. Note that plywood and various other existing materials may be used.

The separates 2 may be existing ones.

Part 2 Figures 5 to 8 show a second embodiment of the invention as claimed in claim 1. In this case, a large U-shaped hardware 7 is used as the form tie in the previous example. .

In this case, the U-shaped hardware 7 is formed to be wide and tall enough to embrace the truss end 6, and a nut 7 is installed in the middle of the U-shaped hardware 7.
1 are joined so that the ends of the separator 2 are penetrated and fitted, and slits 72 are bored in the longitudinal direction at both ends,
The slit 5 is provided through the slit so that it can be freely inserted and removed.

Part 3 FIG. 9 and FIG.
In this case, in the first embodiment,
The nut 31 of the form tie 3 is removed, and the rear end of the form tie is integrally welded 42 with the middle part of the U-shaped hardware 4.

Part 4 FIGS. 11 and 12 show a fourth embodiment according to the invention of claim 1. In this case, in the third embodiment, a strip-shaped hardware is used instead of the U-shaped hardware 4. 8 form tie 3
are welded together 82, and a slit 81 through which the wedge 5 is inserted is bored in the rectangular metal piece 8.

Part 5 FIGS. 13 to 15 show a fifth embodiment of the invention as claimed in claim 1. In this case, the form tie 3 is formed of a relatively long cylindrical body 9, and the rear end of the cylindrical body is A slot 91 through which the wedge 5 is inserted is bored in the section.

Although not shown, in each of the above embodiments, M5
A taper pin may be used instead.

Part 6 FIGS. 16 and 817 show a sixth embodiment in which the single pipe end material 110 is intersected with the truss end material 6 in the first embodiment.
In this embodiment, the end piece 110 is tied to the upper chord member 62 of the truss end piece with a wire 120.

Part 7 FIGS. 18 to 21 show a seventh embodiment according to the invention of claim 2. In this case, in the sixth embodiment, the upper chord member 62 of the truss end thickness 6 and the single Pipe end material 110
and are bound together with specific fastening hardware 130.

The fastening hardware 130 has a flange 132 formed at both ends of a U-shaped member 131 that straddles the end piece 110 to engage with the upper chord member 62 of the truss end piece 6, and a fastening member 132 in the middle part. The bolt is threaded through the port 133, and the tightening member 134 is rotatably mounted on the tip of the bolt to abut against the thick end material 110. At the intersection of the top chord member 62 of the truss end, the end member 110
straddle the U-shaped member 131, engage both hooks 132 with the truss end piece upper chord member 62, and connect the root entangling member 134 with the end member! 10 and is tightened by tightening the port 133. Reference numeral 135 denotes a nut which is in contact with the middle part of the U-shaped member 131 in order to screw the port 133 through it.

"Effects of the Invention" According to the invention of claim 1, each truss end is volatilized by a wedge or a taper pin in one upper chord member and supported by a form tie, so that driving of the stem or taper pin is not necessary.・It can be assembled and disassembled very easily by punching, and in this way, each truss end is supported by one upper chord member and pressed against the weir plate by two lower chord members, and the overall structure is sufficient. It exhibits mechanical strength, and one truss shaft has the capacity of almost two conventional shafts.
The amount of truss ends used is significantly smaller than the amount of conventional M end pieces used, which greatly reduces the labor and labor required for temporary installation and removal, eliminating labor shortages and reducing costs. You can try to bring it down. Furthermore, truss end pieces can be much lighter than conventional end piece materials, making it easier to carry, temporarily install, and dismantle.
Since they have a 2V-shaped cross section, they can be stacked by fitting the concave and convex portions together when transporting or storing them, which is extremely convenient and does not require a large space.

According to the invention as claimed in claim 2, the truss end and the end member such as a single pipe intersecting with the truss end can be strongly connected and integrated with the fastening hardware, and the weir board can be It can be held securely, and its assembly and disassembly can be carried out extremely easily and quickly by engaging and disengaging the U-shaped member in the fastening hardware, and tightening and tightening by tightening and loosening bolts.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, FIG. 1 is a plan view of the first embodiment, No. 21J is a sectional view taken along the line XX in FIG. 1 on the same side, and FIG. FIG. 4 is an enlarged cross-sectional side view of the main part on the same side, FIG. 5 is a plan view of the second embodiment, and FIG. 7th cross-sectional view of
The figure is an enlarged plan view of the main part of the same side, FIG. 8 is an enlarged cross-sectional side view of the main part of the same side, FIG. 9 is an enlarged plan view of the main part of the third embodiment, and FIG. FIG. 11 is an enlarged cross-sectional side view of the main part of the fourth embodiment, FIG. 12 is an enlarged cross-sectional side view of the main part of the same side, and FIG. fI is an enlarged plan view of the main part of the fifth embodiment; FIG. 14 is an enlarged cross-sectional side view of the main part on the same side; FIG. 15 is an end view of the main part on the same side;
6 is a plan view of the sixth embodiment, FIG. 17 is a sectional view taken along the line X--X in FIG. 16 on the same side, and FIG. 18 is a plan view of the seventh embodiment. The figure shows the same side of Figure 18 XIX-XI.
An X-ray sectional view, FIG. 20 is an enlarged plan view of the main part on the same side, and FIG. 21 is an enlarged side view of the same side. l...Weir plate 2...Separator 3...Form tie 4...U-shaped hardware 5...Wedge
6... Truss end thickness 7... U-shaped hardware 9... Cylindrical body 12... Sheet 41... Slit 51... Notch 62... Upper chord member 71... Nando 81. ...Slit 91...Slit +20...Wire 131...U-shaped hardware 133...Tighten with Pol 135...Nando

Claims (2)

[Claims] (1) It has two parallel lower chord members and one upper chord member, forming an inverted V-shaped cross section, and provides a truss end that brings both lower chord members into contact with the outer surface of the weir plate, and also has a separator. A wedge or taper pin that extends the rear end of the form tie that works with the dam to ensure the distance between the weir plates to be longer than the back of the truss end, and presses the rear end against the upper chord of the truss end. A formwork support structure using truss ends that can be freely inserted and removed. (2) A truss end is provided that has two parallel lower chord members and one upper chord, and has a V-shaped cross section, and that brings both lower chord members into contact with the outer surface of the weir plate, and the truss end thick An appropriate round piece such as a single pipe or a square piece is provided to intersect with the upper chord member of the truss end piece on the outside of the truss end piece, and fastening hardware is provided to tightly connect the upper chord member and the end piece member, and the fastening hardware is provided. uses a truss end piece, characterized in that hooks are formed at both ends of a U-shaped member that straddles the end piece to engage with the upper chord member, and a tightening bolt is threaded through the middle part. Formwork support structure.