JP2002129577A - Form for slope form and slope form structure using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form for slope form which improves the strength and quality of a slope frame structure by preventing the occurrence of a gap between the form and a slope face and to provide a slope frame structure using the form. SOLUTION: The form N1 for slope form which forms the reinforced concrete slope form structure is provided with a pair of frame bodies 1 and 1 which are arranged to face each other at a required interval and connecting members 2 which are provided between the frame bodies 1 and 1 at two spots which are separated from each other by a required interval in the lengthwise direction of the frame bodies 1 and 1. Each frame body 1 is formed on a planar crimped wire net formed by knitting corrugated longitudinal wires 11 with transversal wires 12. The intervals between the transversal wires 12 and 12 arranged to hold the connecting sections 220 of the connecting members 2 between them from the upside and downside are made longer than the intervals between the other transversal wires 12 and 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork for a legal form and a legal form structure using the formwork. More specifically, a formwork for a legal form having improved strength and quality of a formwork structure by preventing a gap from being formed between the formwork for a formwork and a slope, and a formwork structure using the formwork. About.

[0002]

2. Description of the Related Art Conventionally, a reinforced concrete method frame structure is provided on a slope surface such as a slope surface of a mountain or a cut slope or an embankment to stabilize the slope surface to prevent landslides. Body is provided.

[0003] A mold for a legal frame is used to form a legal frame structure. This formwork has a frame made of a wire mesh such as a crimped wire mesh facing the surface, and a connecting member formed by assembling a rod-like body into a substantially "well" shape so as to be rotatable between the frames. General. The frame is usually tightly knitted with a small mesh size so that fresh concrete does not protrude from the frame when the concrete is poured. The formwork can be folded down by folding it in the length direction. The formwork is carried out in a folded state from the factory, and is opened and used on site.

[0004] The formwork for formwork is usually installed on the slope as follows. Lower reinforcing bars are arranged in a grid at predetermined positions on the slope. The formwork for formwork is opened from the folded state, and a required number of the formwork forms are arranged above the arranged lower reinforcing bars.

[0005] The lower rebar is lifted, the lower rebar and the connecting member are bound by a number line or the like, and a formwork for a legal frame is fixed to the lower rebar. The anchor is driven into the ground, and the anchor and the formwork for the formwork are bound and fixed by a number line or the like.

[0006] An upper reinforcing bar is arranged above the connecting member,
It is bound by a connecting material and a number line, and the upper rebar and the formwork for the formwork are fixed. Ready-mixed concrete is cast inside the installed legal formwork. Then, a legal frame structure is formed.

[0007]

However, there are the following problems in the installation method using the above-described conventional formwork formwork. That is, since the upper rebars and the lower rebars overlap each other at the portions where the normal frame structures intersect, there is inevitably a height difference between the rebars. For this reason, among the connecting members that bind to the reinforcing bar, the connecting member of the legal frame structure provided on one side is higher than the connecting member of the legal frame structure provided on the other side. .

[0008] Therefore, even if an attempt is made to lay the formwork for the slope along the irregularities of the slope, at the stage of binding the reinforcing bar and the connecting member, the height difference of the reinforcing bar, the form rises from the slope, and the form There were gaps between the slopes. For this reason, unnecessary force is applied to the formwork to cause distortion, and the strength of the structure is reduced, and ready-mixed concrete poured from the gap between the formwork and the slope protrudes and the finish is deteriorated. there were.

(Object of the Invention) An object of the present invention is to solve the above-mentioned problems, and to prevent a gap between a formwork for formwork and a slope from being formed due to a difference in height of a reinforcing bar. An object of the present invention is to provide a formwork for a legal frame with improved strength and quality of a body and a legal frame structure using the same.

[0010]

Means of the present invention taken to achieve the above object are as follows. According to the first aspect, the invention includes a pair of frames which are constituted by a wire mesh including a vertical wire and a horizontal wire, and are arranged so as to face each other at a required interval, and include a vertical wire and a horizontal wire. And a connecting member provided so that both ends of the horizontal wire are rotatably attached to the vertical wire of the frame, and the connecting member of the vertical wire of the frame is The space between the horizontal wires sandwiching the vertical wire of the attached portion is formed to be wider than the space between the other horizontal wires.

According to a second aspect of the present invention, there is provided a reinforcing bar constructed on a slope, a form frame for a legal frame according to the first invention fixed to the reinforcing bar, and a steel frame provided in the form frame for a legal frame. And a concrete frame.

[0012] The type of "wire mesh" in the present invention is not particularly limited as long as it has a strength not deformed by the pressure of the ready-mixed concrete when the ready-mixed concrete is poured into the frame and filled. Absent. For example, a crimped wire mesh, a welded wire mesh having a straight rod-shaped vertical wire and a horizontal wire, and formed by welding intersections can be used.

(Operation) In the mold for a legal form according to the present invention,
Among the vertical wires of the frame, the interval between the horizontal wires sandwiching the vertical wire in the portion where the connecting member is attached is formed wider than the interval between the other horizontal wires, so that the connecting member is vertically moved with respect to the frame. The degree of freedom to move in the direction is increased. Therefore, while the frame body is installed on the slope, only the connecting member can be moved upward to be bound with the upper or lower reinforcing bar or the reinforcing bar such as the reinforcing bar arranged on the slope.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. [Embodiment 1] Fig. 1 shows a first embodiment of a legal formwork according to the present invention.
FIG. 2 is a side view explanatory view of a frame forming the legal form mold shown in FIG. 1 and omits both right and left sides. FIG. 3 is an explanatory side view showing another embodiment of the frame of the legal formwork.

Reference numeral N1 indicates a legal form form for forming a reinforced concrete legal form structure. The form frame for frame N1 is provided between a pair of frames 1, 1 arranged so as to face each other at a required interval, and is provided between the frames 1, 1 in the longitudinal direction of the frame 1. And two connecting members 2 provided at required intervals.

The frame 1 is formed of a flat crimped wire net formed by knitting wavy vertical wires 11... And horizontal wires 12. Of the vertical wires 11 of the frame 1, the horizontal wires 12 arranged so as to sandwich a portion (hereinafter, mainly referred to as an engagement portion 110) with which a connecting portion 220 of the connecting member 2 to be described later engages from above and below. , 12 are different from those of the other horizontal wire 1
It is formed wider than the interval between 2 and 12.

In this embodiment, the engagement portion 110
The interval between the horizontal wires 12, which are arranged so as to sandwich them, is formed about twice as wide as the interval between the other horizontal wires 12, but is not particularly limited thereto, and is not limited to this.
Are appropriately set in accordance with the wire diameter of the upper reinforcing bar 32 described later and the like.

The connecting member 2 is formed by vertically crossing a straight rod-shaped vertical wire 21 and a horizontal wire 22 so as to form a substantially "well" shape, and fixing the intersection by welding. The above horizontal wire 2
At both ends, a connecting portion 220 formed by bending the end side into a substantially ring shape is provided. Then, each connecting member 2
Is rotatably engaged with the engagement portion 110 of the vertical wire member 11 so as to span and connect between the frame bodies 1 and 1.

With the above configuration, the form N1 for the legal frame
Can be folded in the longitudinal direction by displacing the frame bodies 1 on both sides in opposite directions. Thus, the formwork N1 is usually carried out in a folded state from the factory, and is opened and used at the site.

In this embodiment, as shown in FIG. 2, the upper end portion 111 of the vertical wire 11 of the frame 1 is projected upward from the uppermost horizontal wire 12 to form a legal form mold N1. However, the entire upper end 111 of the vertical wire 11 is
It can also be formed by bending (or winding) into a substantially ring shape.

As shown in FIG. 3, the upper end of the vertical wire 11 protruding upward from the uppermost horizontal wire 12 of the frame 1 is bent (or wound) at every other bent portion 1.
12, the vertical wire 11 having the bent portion 112,
The short portion 121 may be formed by cutting off the upper part of the vertical wire 11 located between the upper and lower wires 11 at a position below the uppermost horizontal wire 12.

As described above, if the projecting upper end of the vertical wire 11 is bent (or wound),
Prevents workers from being hurt at the above-mentioned protruding parts, breaking clothes by hooking them, or breaking a lifeline used on slopes etc. during construction of the legal frame structure described below. And safety during handling can be improved.

Further, after the concrete is cast, the iron is not easily caught when finishing the outer shape of the legal frame structure, so that the operation of the iron is smooth and a beautiful finished surface can be obtained. Further, since there is no portion exposed from the upper surface of the legal frame structure of the frame 1, the frame 1 is easily buried in concrete, so that corrosion of the frame 1 due to rust can be prevented.

(Operation) FIG. 4 is an explanatory front view showing that the connecting member can be moved in the vertical direction with respect to the frame of the formwork for the legal frame. With reference to FIG. 4, the operation of the formwork formwork N1 will be described. In the form frame N1, as described above, the interval between the horizontal wires 12, 12 disposed so as to sandwich the engaging portion 110 of the vertical wire 11 is formed wider than the intervals between the other horizontal wires 12, 12. ing. Therefore, the connecting member 2 of the legal form frame N1 has a high degree of freedom to be movable in the vertical direction with respect to the frame bodies 1 and 1.

FIG. 5 shows an embodiment of the legal frame structure according to the present invention, and is an explanatory view showing a part of a construction state of the legal frame structure. FIG. 6 shows a portion where the legal frame structure intersects. It is the schematic explanatory drawing which looked at (the part shown by P of FIG. 5) from the front direction. The symbol K indicates a legal frame structure, which was constructed using the legal frame formwork N1 shown in FIG. Hereinafter, the structure of the legal frame structure K will be described along with the construction procedure. In addition, the construction procedure of the legal frame structure K is not limited to the following.

On the slope G for forming the frame structure K,
The lower reinforcing bar 31 as a bone member is arranged in a lattice shape. At this time, the lower rebar 31 is simply placed on the slope G. The lower rebars 31 are juxtaposed at required intervals.

A legal form form N1 is framed around the lower reinforcing bar 31 so as to surround it.

The lower rebar 31 and the formwork N1 are bound and fixed by a number line or the like (not shown). The lower reinforcing bar 31 placed on the slope G is lifted up and bound to the lower part of the connecting member 2 (the intersection of the vertical wire 21 and the horizontal wire 22) at the corresponding location. As a result, the lower reinforcing bar 31 floats from the slope G, and the ready-mixed concrete flows below the lower reinforcing bar 31 at the time of concrete placement, which will be described later.

An anchor (not shown) is driven into the ground, the anchor and the formwork N1 are fixed by a number line or the like (not shown), and the lower reinforcing bar 31 and the formwork N1 are set on the slope G. I do. A main anchor having a relatively long overall length is usually driven into a portion where the lower reinforcing bars 31 intersect. At other locations, a slightly shorter auxiliary anchor is driven at a required pitch.

Adjacent legal form molds N1 are connected and fixed by a number line or the like.

Like the lower reinforcing bar 31 that was initially arranged,
Further, the upper rebar 32 is arranged above the connecting member 2 (the intersection of the vertical wire 21 and the horizontal wire 22), and the upper rebar 32 and the connecting member 2 are arranged.
Is fixed by a number line or the like (not shown). The upper rebar 32
Like the lower rebar 31, they are juxtaposed at required intervals.

Concrete 6 is poured and reinforcing bars 3
The molds 1 and 32 and the mold N1 for the legal frame are embedded and solidified.

(Operation) With reference to FIGS. 4 to 6, the operation of the legal frame formwork and legal frame structure will be described. At the place where the legal frame structure K intersects (for example, the portion indicated by P in FIG. 5),
Since the upper rebars 32 and 32 and the lower rebars 31 and 31 overlap each other, the rebars (upper rebars 32 and 3)
2 and the lower reinforcing bars 31, 31). Therefore, the lower rebar 31 (or the upper rebar 32) and the connecting member 2
At the stage of binding, the one-way side (FIG. 5)
The position of the connecting member 2 laid diagonally downward and rightward, and from front to back in FIG. 6 is different from that of the connecting member 2 laid diagonally upward (rightward in FIG. 5 and left to right in FIG. 6). It is higher than the member 2.

By the way, in the conventional formwork for the formwork, the mesh size of the formwork is usually small and tightly knitted so that fresh concrete does not protrude from the inside of the form when the concrete is poured. Suppose that this frame body is a legal form frame N1 shown in FIG.
In this case, the frame members 1 and 1 and the connecting member 2 are fixed, and the degree of freedom of vertically moving the connecting member 2 with respect to the frame members 1 and 1 is almost eliminated. Therefore, when the connecting member 2 is pulled up, the frame bodies 1 are also pulled up together with the connecting member 2. Therefore, the connecting member 2 laid in one direction side
Is raised, the frame bodies 1 and 1 are pulled upward and lift off the slope G, and the formwork N1 and the slope G
There was a gap between them.

However, in the legal form frame N1 according to the present embodiment, as shown in FIG.
Has a high degree of freedom to move in the vertical direction with respect to, so that only the connecting member 2 can be moved in the upward direction while the frame body 1 is installed on the slope G to bind the upper reinforcing bar 32 and the lower reinforcing bar 31. . Therefore, as shown in FIG. 6, the legal form frame N1 can be laid along the irregularities of the legal surface G without forming a gap between the legal form mold N1 and the lateral surface G. .

Therefore, the gap formed between the legal form frame N1 and the slope G causes distortion in the legal form frame N1 and lowers the strength of the legal form structure K, Formwork N
It is possible to solve the conventional drawback that the fresh concrete poured out from the gap between the slope 1 and the slope G protrudes to deteriorate the finish.

[Embodiment 2] FIG. 7 is an explanatory front view showing a second embodiment of a legal formwork according to the present invention.
This indicates that the connecting member of the formwork for the legal frame can be moved up and down with respect to the frame. Further, the same or equivalent parts as those in the first embodiment are denoted by the same reference numerals,
The description of the parts described in the above embodiments will be omitted, and differences will be mainly described.

Reference numeral N2 indicates a legal form form for forming a reinforced concrete legal form structure. The form frame N2 includes a pair of frames 1, 1 (the same as those in the first embodiment) which are arranged so as to face each other at a required interval. And two connecting members 4 (one of which is hidden and invisible in FIG. 7) provided at a required interval in the length direction of the frame 1.

Each connecting member 4 is composed of a straight rod-shaped vertical wire 41,
41 and the horizontal wires 42, 42a, 42b. Specifically, a horizontal wire 42 is provided in the upper horizontal direction, and two horizontal wires 42 shorter than the horizontal wire 42 are provided on the lower side.
a, 42b are provided in the lateral direction. And the horizontal wire 42
The vertical wires 41, 41 are inclined between the horizontal wires 42a, 42b so that the lower side faces inward.

The upper horizontal wire 42 constituting the connecting member 2
Is formed of a wire having flexibility enough to be bent by an operator.

The lower side of the vertical wires 41, 41 partially crosses the vicinity of the inner ends of the horizontal wires 21a, 21b.
The vertical wires 41, 41 and the horizontal wires 42, 42a, 42
The intersection of b is fixed by welding.

The horizontal wires 42, 42 constituting the connecting member 4
A connecting portion 410 is formed at the outer end of each of the a and 42b by bending the end side into a substantially ring shape. The connecting member 2 is formed by connecting the connecting portion 410 to the engaging portion 11 of the vertical wire 11 of the frame body 1.
0 and rotatably attached.

(Operation) Referring to FIG.
2 will be described. In the form frame N2 for the legal frame, as described above, the horizontal wire 1 arranged so as to sandwich the engagement portion 110 is provided.
The space between the two horizontal wires 12 is formed wider than the space between the other horizontal wires 12. Therefore, the connecting member 4 of the legal form frame N2 has a high degree of freedom to be movable in the vertical direction with respect to the frame bodies 1 and 1.

FIG. 8 is an explanatory view showing a state in which the formwork for legal frame shown in FIG. 7 is attached to a reinforcing cage. First, the rebar basket 5 for attaching the formwork N1 will be briefly described. The reinforcing bar 5 is composed of a bar-shaped upper reinforcing bar 51 and a lower reinforcing bar 5.
2 and 52, and a hoop 53 formed in a substantially “U” shape
... Reinforcing cage 5 has two hoop bars 5
The upper and lower rebars 51, 51 and the lower rebars 52, 52 pass through the upper rebars 51, 51 and the lower rebars 52, 52, respectively. The lower rebars 52, 52 are formed in a shape that is arranged and fixed. A plurality of hoop streaks 53 are provided at predetermined intervals in the length direction.

The rebar basket 5 has the above-mentioned shape, and is first installed in a lattice shape when the method frame structure is constructed. Then, after the legal form form N1 is attached to the reinforced cage 3, concrete is poured into the legal form form N1, and the construction of the legal form structure is completed.

(Operation) With reference to FIGS. 7 and 8, an operation when the legal formwork according to the second embodiment is attached to a reinforcing bar will be described. First, as shown in the imaginary line of the form frame N2 for the legal frame shown in the upper part of FIG. 7, the upper horizontal wire 42 constituting each connecting member 4 is bent so as to be warped upward. Lateral wires 41a and 41b that are deformed so as to have a substantially "C" shape in side view and become entrances of the mounting portion 43
The gap width between them is made wider than usual.

Next, with the gap width between the horizontal wires 41a, 41b widened, the vertical wires 41, 41 are brought closer to the pre-installed rebar cage 3 from above, and the vertical wires 41, 41
Position outside 51.

Then, in a state where the upper rebars 51, 51 are in contact with the insides of the vertical wires 41, the warp of the horizontal wire 42 is returned, and the legal form form N2 is pushed downward. The upper rebars 51, 51 are disposed in the upper inner corners of the mounting portion 43 while the legal formwork N2 is pushed in, and the vertical wires 41, 41
Are inserted into the lower rebars 52, 52 so that the lower rebars 52, 52 are located outside the lower side of the vertical wires 41, 41. The formwork for frame N2 can be attached to the reinforcing bar 3 previously set as described above so as to cover it from above, so that attachment is simple.

By the way, at the place where the normal frame structures intersect, as in the first embodiment, the upper reinforcing bars 51, 51 and the lower reinforcing bars 52, 52 overlap each other, as in the first embodiment. Inevitably, there is a height difference in the reinforcing bar 5. However, as shown in FIG.
Since the degree of freedom of movement in the vertical direction with respect to the frame 1 is high, only the connecting member 4 can be moved upward to bind the reinforcing bar 5 with the frame 1 installed on the slope.
Therefore, the mold frame N2 can be laid along the irregularity of the slope without forming a gap between the mold frame N2 and the slope.

The form N for the legal frame attached to the reinforcing bar 5
2 can also be securely fixed to the reinforced cage 3 appropriately by a track or the like. Further, in the present embodiment, the reinforcing bar 5 is formed by passing the upper reinforcing bar 51 and the lower reinforcing bar 52 through the inside of the hoop bar 53, but the reinforcing bar 5 is not limited to this. For example, it is also possible to use a spiral section which bends a required portion at a substantially right angle and extends spirally in the longitudinal direction.

Further, in the present embodiment, the vertical wires 41, 4
Although the connecting member 4 is formed by inclining the vertical wire 1,
It is also possible to form the connecting member by providing the vertical line 41, projecting the horizontal wires 42a, 42b inward with respect to the vertical wires 41, 41, and bending the protruding portion downward. In this case, the lower reinforcing rods 5 are attached to the bent portions of the horizontal wires 42a, 42b projecting inward from the vertical wires 41, 41.
2 is fitted.

The terms and expressions used in the present specification are for explanation only, are not restrictive, and do not exclude terms and expressions equivalent to the above-mentioned terms and expressions. Further, the present invention is not limited to the illustrated embodiment, and various modifications are possible within the scope of the technical idea.

[0053]

The present invention has the above configuration and has the following effects. In the form frame for a legal frame according to the present invention, among the vertical wires of the frame, the interval between the horizontal wires sandwiching the vertical wire in the portion where the connecting member is attached is formed wider than the interval between the other horizontal wires. The connecting member has a high degree of freedom to move vertically with respect to the frame. Therefore, while the frame body is installed on the slope, only the connecting member can be moved upward to be bound with the upper or lower reinforcing bar or the reinforcing bar such as the reinforcing bar arranged on the slope. Therefore, without forming a gap between the formwork and the slope, the formwork for the formwork can be laid along the irregularities of the slope, thereby improving the strength and quality of the structure. The body can be constructed.

[0054]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a legal form formwork according to the present invention.

FIG. 2 is an explanatory side view of a frame constituting the legal form form shown in FIG. 1, with left and right sides omitted.

FIG. 3 is an explanatory side view showing another embodiment of the frame of the legal form mold.

FIG. 4 is an explanatory front view showing that a connecting member can be moved in a vertical direction with respect to a frame of a legal form mold.

FIG. 5 is an explanatory view showing one embodiment of the legal frame structure according to the present invention and showing a part of a construction state of the legal frame structure.

FIG. 6 is a schematic explanatory view of a portion where the legal frame structure intersects (a portion indicated by P in FIG. 5) viewed from the front.

FIG. 7 is an explanatory front view showing a second embodiment of the legal form mold according to the present invention, in which a connecting member of the legal form mold can be moved up and down with respect to the frame. Is represented.

FIG. 8 is an explanatory view showing a state in which the legal form form shown in FIG. 7 is attached to a reinforcing cage.

[Explanation of symbols]

 K law frame structure N1 law frame form N2 law frame form G slope 1 frame 11 vertical wire 110 engaging portion 111 upper end portion 112 bent portion 12 horizontal wire 121 short portion 2 connecting member 21 vertical wire 22 Horizontal wire 220 Connecting portion 21a, 21b Horizontal wire 3 Reinforcing bar 31 Lower reinforcing bar 32 Upper reinforcing bar 4 Connecting member 41 Vertical wire 410 Connecting portion 41a, 41b Horizontal wire 42, 42a, 42b Horizontal wire 43 Mounting portion 5 Reinforcing bar 51 Upper reinforcing bar 52 Lower rebar 53 Hoop 6 Concrete

Claims (2)

[Claims] 1. A pair of frames (1), which are composed of a wire mesh including a vertical wire (11) and a horizontal wire (12), and are arranged so as to face each other at a required interval; 21) and a horizontal wire (22), and a connecting member provided by rotatably attaching both ends of the horizontal wire (22) to the vertical wire (11) of the frame body (1). (2), of the vertical wire (11) of the frame (1), the horizontal wire (12, 12) sandwiching the vertical wire (11) of the portion to which the connecting member (2) is attached ) Is formed wider than the interval between the other horizontal wires (12, 12). 2. The method according to claim 1, wherein the reinforcing steel is fixed to the reinforcing steel.
And concrete (6) provided in the formwork (N1).
And a frame structure.