JP3148981B2 - Concrete casting formwork for legal form - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete
This is related to the casting formwork.

[0002]

[Problem to be Solved by the Invention] In the case of construction of a stave for stabilizing a slope, a recess is provided in the upper surface of the stave, and after anchor heads are fixed in this recess, concrete is post-punched in the recess. There is a method of embedding the anchor head. By burying the anchor head in this way,
The water stoppage and the landscape can be improved.

[0003] However, the work of placing concrete in the concave portion is a separate step from the work of placing concrete in the slab, and is performed in an unstable place such as a steep slope or the like. Will be invited.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and is capable of simultaneously performing a concrete placing operation of a fixing recess of an anchor head and a concrete placing operation of a slab. Therefore, an object of the present invention is to provide a concrete casting formwork for a legal frame that can shorten the construction period.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a mold for manufacturing a concrete frame by casting concrete therein. Forming an anchoring recess for anchoring the anchor head, forming an inflow gap for concrete from inside the formwork in the fixing recess, and pouring concrete into the formwork to form an inflow gap. A concrete casting formwork for a concrete frame, characterized in that the fixing recess can be filled with concrete through a portion.

In the fixing recess, a plurality of vertical members are erected along the periphery of the fixing recess, and a fixing plate of an anchor head is erected on the inner side of these vertical members, and between the vertical members. Disclosed is a concrete casting formwork for a concrete frame, wherein the concrete inflow gap is provided.

Further, the vertical member is disposed so as to be divergent from the upper surface side to the bottom side of the formwork so that the anchoring angle of the anchor can be adjusted. Provide formwork.

Further, the present invention provides a concrete casting formwork for a legal form, wherein the vertical member is erected on a lower frame material provided at the bottom of the formwork. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <A> Formwork material The formwork material 100 may have various shapes. As shown in FIGS. 1 and 4, the formwork material 100 has a side surface and an upper surface. The case in which the legs 110 project radially will be described. In addition to the cross-shaped form material 100 shown in the figure,
There may be two, three, or five or more 110. The legs 110 may be tapered as shown in the figure or may have the same cross-sectional shape.

A part of the end face of the leg 110 of the form material 100,
Alternatively, a concrete pouring opening 111 as shown in FIG. 1 is provided at another position. Concrete is made to flow in from the pouring opening 111, or a vibrator is inserted to apply vibration and uniform the concrete. Although not shown,
Inside the form member 100, reinforcing bars are arranged radially from the center toward the periphery. If this arrangement is carried out at the factory, the work on site becomes extremely easy.

[0011] A steel plate or the like is used for a plate body forming the form material 100, and a plurality of openings 112 capable of holding the cast concrete are provided to form a porous plate body. As shown in FIG.
The opening 112 is surrounded by the inclined portion 112a and the connecting portion 112b. The inclined portion 112a is formed so as to be gradually inclined outward toward the upper side, and the connecting portion 112b connects these adjacent inclined portions 112a by shifting them forward and backward.

[0012] Such an inclined portion 112a and a connecting portion.
The opening 112 surrounded by the opening 112b is formed in a receiving port shape and has a multi-stage opening, so that the concrete C cast therein is prevented from flowing out. The opening 112 can be manufactured by inserting a number of slits in the same direction into a steel plate, stretching the steel plate, and then pressing and raising the inclined portion 112a.

<B> Lower Frame Material The lower frame material 200 is, as shown in FIGS. 2 and 3, a lower frame main material 210 arranged in the same shape as the bottom periphery of the form material 100, and a lower frame connecting them. Connecting materials 220 and 221 and bottom plate 23 arranged at the center
Consists of 0.

The lower frame main member 210 is composed of four L-shaped angle steel members or the like, which are arranged in a cross shape with their back surfaces facing each other. The lower frame connecting material 220 is an angle steel material or the like that connects the ends of the lower frame main material 210, and the lower frame connecting material 221 is the lower frame main material.
It is composed of an angle steel material connecting the intermediate parts of 210.

The bottom plate 230 is attached to the bottom surface of the four corners of the lower frame main member 210 by welding or the like, and has an anchor insertion hole 231 at the center thereof. In some cases, the lower end of a fixing member 300 described later may be fully opened without providing the bottom plate 230. In this case, the lower end of the fixing member 300 is
It will be directly joined to such as.

<C> Fixing Member As shown in FIGS. 2 and 3, the fixing member 300 is for forming a fixing recess 310 for fixing the anchor head on the upper surface of the mold member 100. In the fixing recess 310, a concrete inflow gap 320 from the inside of the form material 100 is formed, and concrete C is poured into the form material 100, so that the inside of the fixing recess 310 through the inflow gap 320. Is characterized in that it can be filled with concrete C.

The specific structure of the fixing member 300 is as follows. A plurality of vertical members 330 such as angle members are erected on the bottom plate 230 of the lower frame member 200 along the periphery of the fixing recess 310, and these vertical members 330
A fixing plate 340 at the head of the anchor is erected on the way on the inner side, and a gap 320 for inflow of concrete is provided between the vertical members 330.

Between the upper ends of the vertical members 330, the form material 100
The top plate 350 is erected so as to be flush with the upper surface of. Top plate 350
In the center of the fixing plate 340, anchor insertion holes 351 and 341 are provided.
Has been established. In addition, the lower end of each vertical member 330 and the corner of the lower frame main member 210 are connected by a reinforcing rib 360 for reinforcement.

FIGS. 1 and 4 show a lower frame member constructed as described above.
FIG. 2 is a diagram in which a mold material 100 is put on a 200 and both are integrated by bolts, welding, or the like. At this time, the top plate 350 of the fixing member 300
Is flush with the center of the formwork material 100.

<4> Concrete outflow prevention member A concrete outflow prevention member 400 is attached to the periphery of the bottom of the frame member 100. Concrete outflow prevention member 400
In some cases, the sheet member may be attached in a bag shape or the like with a margin.

As the sheet member, for example, a material such as a woven fabric or a nonwoven fabric, which is flexible enough to follow the unevenness of the ground and to prevent concrete from flowing out and to discharge water, or a mortar component It can be composed of a net-like member that oozes out.

Also, a brush member is provided around the bottom edge of the formwork member 100 so as to follow the unevenness of the ground so that the concrete does not flow out and the hair is planted at a density enough to discharge water. There may be a case where a skirt member such as rubber having sufficient flexibility to satisfy the above conditions is provided.

[0023]

As shown in FIG. 1, an anchor 500 is placed on the ground by a known method. The end of the PC steel wire constituting the anchor 500 is exposed outside the anchor hole. The head of the exposed anchor 500 is inserted into the fixing member 300 to temporarily fix the form member 100 to the slope.

Next, a jack is attached to the tail end of the anchor 500 to apply tension, and the entire form is pressed against the ground by the reaction force of the tension. Then, the concrete C is put into the form material 100. The concrete C is introduced from the pouring mouth 111 located on the upper side of the slope, and a vibrator is inserted to form a uniform concrete C.

At this time, as shown in FIG.
0 has an inflow cavity 320, so the formwork material 10
The concrete C poured into the inside naturally flows into the fixing recess 310 and is filled. Accordingly, the work of placing concrete C into the fixing recess 310 of the anchor head and the forming material 100
The work of placing the concrete C into the inside can be performed at once.

Further, since the opening 112 for holding the concrete is opened on the surface of the formwork material 100, there is no leakage to the outside, and irregularities are formed on the surface as shown in FIG. .

Furthermore, since a concrete outflow preventing member 400 such as a flexible and water-permeable sheet is attached to the bottom of the form material 100, the concrete fits perfectly into the shape of the ground and a gap is generated. It adheres well to the ground because the mortar does not seep out.

[0028]

[Other Embodiments] Although not shown, each vertical member 330
May be arranged in a divergent shape from the top side to the bottom side of the form member 100 so that the angle at which the anchor 500 is driven can be adjusted. Accordingly, even when the installation angle of the anchor 500 is not orthogonal to the ground surface, it is possible to easily cope with the case. Note that, similarly to the above embodiment, the lower end of the fixing member 300 may be fully opened without providing the bottom plate 230.

In place of the plurality of vertical members 330 such as angle members, a fixing plate 340 is mounted inside a cylindrical body having a circular or rectangular cross section or a divergent cylindrical body to form a fixing concave portion.
It is also possible to employ a structure in which a concrete inflow gap portion such as an opening or a slit is formed on the peripheral surface of the cylinder.

[0030]

Since the present invention has been described above, the following effects can be obtained. <a> Since the concrete placement work of the anchoring recess of the anchor head and the concrete placement work of the slab can be performed at the same time, the construction period can be shortened.

<B> When the vertical members are arranged in a divergent shape, it is possible to adjust the anchoring angle of the anchor.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a state where concrete is poured into a formwork.

FIG. 2 is a side view of a lower frame material.

FIG. 3 is a plan view of a lower frame material.

FIG. 4 is a perspective view showing a completed state of a legal frame.

FIG. 5 is an enlarged explanatory view of an opening of a mold.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-43037 (JP, A) JP-A-8-27799 (JP, A) JP-A-54-118602 (JP, A) 346455 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) E02D 17/20 104 E02D 5/80

Claims (4)

(57) [Claims] 1. A mold for manufacturing a concrete frame by casting concrete inside, a fixing recess for fixing an anchor head is formed on an upper surface of the mold, and a fixing recess is formed in the fixing recess. Is characterized in that the concrete inflow cavity is formed from the inside of the formwork, and the concrete is poured into the formwork, so that the concrete can be filled into the fixing recess through the inflow cavity. A concrete casting formwork for a legal form. 2. The concrete casting formwork for a legal form according to claim 1, wherein the fixing recess is provided with a plurality of vertical members erected along the periphery of the fixing recess. A concrete casting formwork for a legal form, wherein a fixing plate on an anchor head is erected, and a space for inflow of concrete is provided between each vertical member. 3. The concrete casting formwork for a legal form according to claim 2, wherein the vertical members are arranged in a divergent shape from the upper surface side to the bottom side of the formwork, and the anchoring angle of the anchor is adjusted. A concrete casting formwork for a legal form, characterized in that the formwork is possible. 4. The concrete casting formwork for a legal form according to claim 2 or 3, wherein the vertical member is erected on a lower frame material provided at a bottom portion of the formwork. Concrete casting formwork.