JP6539003B1 - Fabric formwork - Google Patents

Abstract

[Problem] A filling material can be filled without inhibiting the flow of the filling material, and the pulling of the dough with the filling of the filling material can be effectively prevented to form a clean molding surface on the surface of the concrete protection structure. To provide a fabric form that can be formed as SOLUTION: A plurality of connected warps 31 woven along a warp 21 are bundled between a plain weave upper fabric 20a and a lower fabric 20b, and they are linked by a plurality of linked warps 30a and 30b crossed in an X shape. At the same time, the connecting warps 31 are woven into the upper and lower fabrics 20a and 20b at a high density to form a dense band 23 having a large resistance to crossing between the connecting warps 31 and the warps 21. [Selected figure] Figure 3

Description

  The present invention relates to a two-layer fabric fabric form for coating slope protection, revetment and the like with a flat concrete protection structure.

Fabric formwork is disclosed in Patent Documents 1 to 4.
Referring to FIG. 7, the conventional cloth formwork is composed of a plain weave upper fabric a and a lower fabric b, and connecting warps c along a part of the warps are separated from each other between the two fabrics a and b. It crosses X form and is woven, and it is comprised so that the continuous formwork space e of the transversal long part of the connection warp c may be formed between both cloths a and b.
In the case of using a fabric form, a flat concrete protective structure is constructed by filling the form-like space e with a slurry-like consolidated material through an injection port provided in a part of the fabric form.

It is necessary to secure the tensile strength of the connecting warp c which is not broken by the filling pressure of the solidifying material.
Conventionally, as a means for securing the strength of the connecting warp c, a method of increasing the number of sequences of the connecting warp c and a method of using a high-strength thread are known.
The former method is a method of reducing the tension load per one connecting warp c by increasing the number of the arranged connecting warps c crossing each other to form a band.
The latter method is a method of increasing the tensile strength of the linked warp c itself by using the linked warp c larger in diameter than the warp.

JP-A-61-179337 Japanese Patent Application Laid-Open No. 62-125042 Japanese Patent Application Laid-Open No. 7-310430 JP 10-8472 A

The conventional fabric form has the following problems.
<1> In the fabric form in which the connecting warp c is arranged in the form of a band, the band-like bound warp c group blocks the flow of the solid material in the form space e and the filling property of the solid material is bad.
If the number of connecting warps c is reduced and the band width d ₂ is narrowed in order to improve the filling property of the consolidated material, the tension load per thread increases and the connecting warp c becomes easy to break.
Further, since the packing property of the consolidated material deteriorates as the distance from the injection port increases, the cost increases as the number of injection ports increases, and the number of times of filling increases and the workability deteriorates.
Furthermore, in order to increase the fluidity of the solid material itself, it is necessary to mix the fluidizing agent separately.
<2> There is a problem that the cost is increased in the case of the cloth-made form in which the connecting warp c having a large diameter is woven into a part of both the fabrics a and b.
<3> In the conventional cloth-made formwork, since the whole of both fabrics a and b are plain-woven with uniform density, the cross power between the connecting warp c and weft is insufficient. In particular, as shown in FIG. 7 (B), when the connecting warp c with a large diameter is used for both the fabrics a and b, the interlinking force between the connecting warp c and the weft f is insufficient.
When the internal pressure of the fabric form caused by the filling of the consolidating material exceeds the crossing force between the connecting warp c and the weft f, the connecting warp c slips and causes the fabrics a and b to draw. When the fabrics a and b are pulled, the fabrics a and b are wrinkled, and the surface of the concrete protective structure becomes rough and the appearance is impaired.
Furthermore, when the connecting warp c slips, the connecting length of the connecting warp c in the form space e becomes long, and the thickness of the concrete protective structure becomes excessively thick.

The present invention has been made in view of the above points, and the object of the present invention is to fill the solid material without obstructing the flow of the solid material, and to pull the dough accompanied by the filling of the solid material. It is an object of the present invention to provide a cloth formwork which can effectively prevent curling and form a surface of a concrete protection structure as a clean molding surface.
Still another object of the present invention is to provide a fabric mold which can prevent excessive expansion of the mold space.

The present invention comprises upper and lower fabrics in which warp and weft are plain-woven, and linked warps along a part of the warps are woven by crossing X-shape between both fabrics separated from each other, and between the two fabrics It is a cloth formwork for forming a formwork space corresponding to a transverse length of connected warps, filling a consolidating material in the formwork space, and forming a floor-plate-like concrete protective structure, the two cloths The cover factor of the part where the connecting warps are connected by a plurality of connecting warps in which the connecting warps are bundled and the X shape is crossed and the connecting warp is woven is compared with the cover factor of the part where the connecting warps are not woven Both fabrics are woven with different cover factors so as to be in a superior relationship.
In the present invention, the upper and lower fabrics constituting the fabric formwork are connected by a plurality of connecting cords, and the cover factors of the upper and lower fabrics are different combinations to make the slip resistance of a plurality of connected warps woven into the fabric. Since the number can be increased, it is possible to effectively prevent the draw of the connecting warp knitted into the fabric without inhibiting the flow of the solid material at the time of filling the solid material.
In another aspect of the present invention, the packing property of the consolidated material is improved by providing a space through which the consolidated material can permeate between the adjacent connecting cords.
In another embodiment of the present invention, a dense band portion is formed in a range in which the connecting warp and the weft are woven with high density on both the fabrics.
In another aspect of the present invention, the tight band portion is intermittently formed along the weaving direction of each fabric.
In another embodiment of the present invention, the fabric is reinforced by additionally arranging a plurality of reinforcing wefts parallel to the wefts.

The present invention has at least one of the following effects.
The slip resistance of a plurality of connected warps can be increased by merely combining the cover factor of the upper and lower fabrics with different combinations, and it is possible to effectively prevent the stretching of the connected warps woven into the fabric by the filling pressure of the consolidation material. .
As a result, no wrinkles are caused on the surface of the fabric form due to the drawing of the connecting warps, and the surface of the concrete protective structure can be formed as a clean molding surface, and the appearance becomes beautiful.
<2> Since the connecting warp is integrated with the fabric and slip resistance is increased, the transverse length of the connecting warp does not change even if the filling pressure of the solid material is applied.
Therefore, excessive expansion of the mold space can be reliably prevented.
By bundling <3> several connection cords, the resistance area of a connection cord becomes small and the fillability of a solidification material becomes good.
Providing a gap between adjacent connecting cords further improves the packing performance of the consolidated material.
By additionally arranging a plurality of reinforcing wefts in the fabric, it is possible to effectively prevent the breakage of the weft at the time of expansion of the cloth mold.

The perspective view of the cloth formwork which concerns on this invention which abbreviate | omitted one part A perspective view of a connecting cord in which a part of the fabric form is broken An illustration of the knitting structure of the fabric with a part omitted Sectional view of IV-IV in FIG. 3 Sectional view of V-VI in FIG. 3 An explanatory view of a knitting structure of a fabric according to another embodiment It is explanatory drawing of the conventional cloth-made frame, (A) is a perspective view of the cloth-made frame which fractured | ruptured one part, (B) is the expanded sectional view of the cloth which connected the connection warp and weft.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1> Outline of Cloth Forming Frame Referring to FIGS. 1 to 3, the cloth forming frame 10 is formed of a double weave fabric including an upper cloth 20a and a lower cloth 20b.
A plurality of connecting cords 30a and 30b cross and connect X-shapes between the two cloths 20 and 20b, and a plurality of connecting cords 30 regulate the distance between the two cloths 20a and 20b to a constant value. .
In the fabric form 10, the peripheries of both the fabrics 20a and 20b are closed in a bag shape, and a continuous form space 11 is formed in the inside thereof. A portion of the fabric form 10 has one or more inlets for injecting the cement 40.

<2> Fabrics The two fabrics 20a and 20b will be described with reference to FIGS.
The upper fabric 20a and the lower fabric 20b are woven fabrics in which warps 21, wefts 22 and connected warps 31 are plain-woven by a known weaving machine, and are woven in a vertically symmetrical structure.

<2.1> Examples of material of woven yarns The material of each of the yarns 21 to 23 is, for example, synthetic fibers such as polyester, nylon, aramid, wholly aromatic polyester, polyethylene, polypropylene, polyvinyl chloride, etc., semi-acetate such as acetate Synthetic fibers, regenerated fibers such as rayon, inorganic fibers such as glass fibers, and natural fibers such as cotton and hemp can be appropriately selected and used. In particular, polyester is practical from the viewpoint of strength and economy.
Each of the yarns 21 to 23 is composed of multifilaments or monofilaments obtained by twisting single yarns and bundling them.

<2.2> Total denier of fiber For example, in the case of a synthetic fiber, the total denier of these fibers is usually about 500 to 10,000 de, preferably about 1,000 to 6,000 de.
The density of the warp yarn 22 and weft yarn 23 is, for example, 10 to 60 yarns / inch, preferably 13 to 35 yarns / inch.
The density of the connecting warp 31 is, for example, 10 to 70 / inch, preferably 20 to 50 / inch.

<2.3> Connected warps The connected warps 31 are yarns constituting each of the linked warps 30a and 30b, and are located between one or more warps 22 and for the upper fabric 20a and the lower fabric 20b. It is woven in alternately.

<3> Connected cords The connected cords 30a and 30b are spacing holding members for restricting the expansion distance between both the cloths 20a and 20b uniformly, and are provided in a staggered manner with a space between the cloths 20a and 20b. It is done.
The connecting cords 30a and 30b are obtained by arranging a plurality (rows) of connecting warps 31 in a bundle of one bundle, and the upper cloth 20a and the lower cloth 20b cross and connect in an X shape.
Since both connecting cords 30a and 30b have the same transverse length, and the transverse length is the length that regulates the expansion of both fabrics 20a and 20b, the transverse length of the connecting cords 30a and 30b is a concrete protection structure It can be changed arbitrarily according to the thickness of the housing.

  In FIG. 3, a connecting cord 30a diagonally connected from the upper cloth 20a to the lower cloth 20b is shown by a two-dot chain line, and a connecting cord 30b diagonally connected from the lower cloth 20b to the upper sheet 20a is broken It shows. The circle marks indicate the connection points of the connection cords 30a and 30b to the respective fabrics 20a and 20b.

<3.1> width each connected Keihimo 30a of the connecting through cord, the number of parallel connecting warp threads 31 constituting the 30b may at 4-10 present, the width _{d 1} in the connecting points of each connecting Keihimo 30a, 30b is 3 It may be about 10 mm.
The connecting cords 30a and 30b are formed in a narrow band shape in order to reduce the area of resistance to the consolidated material.

<3.2> The number of crossings of the connecting cords In this example, although a configuration in which each of the fabrics 20a and 20b is connected by a total of four connecting cords 30a and 30b is illustrated, the number of crossings of the connecting cords 30a and 30b is A total of six or more may be sufficient.
The number of crossings of the connecting cords 30a and 30b is appropriately selected in consideration of the width d _{1 and the} like of the connecting cords 30a and 30b so that the connecting cords 30a and 30b are not broken by the filling pressure of the consolidation material. I assume.

<3.3> Interval of Intersecting Connecting Strings A predetermined interval G is provided between the adjacent connecting strings 30a and 30b and they are separated from each other.
The gap G is provided between the connection cords 30a and 30b in order to utilize the gap G as a flow space of the consolidated material.
The interval G can be appropriately selected in consideration of the number of connections of the connection cords 30a and 30b, the fluidity of the consolidated material, and the like.

<4> Cover Factor of Fabric The density of the entire fabric is not uniform between the two fabrics 20a and 20b, and the cover factor is different between the portion where the connecting warp 31 is disposed and the portion where the connecting warp 31 is not disposed.
The cover factor is a value indicating the ratio of the area occupied by the yarn to the area of the fabric (the degree of fabric filling), and the weft (dtex) of the warp and weft, fiber density (g / cm ³ ), yarn of the warp and weft It is a value calculated based on the density (book / cm) and the like.

<4.1> Cover Factors of Different Fabrics Specifically, in each of the fabrics 20a and 20b, the cover factor (CF _a ) of the portion where the linked warp 31 is woven is the cover factor of the portion where the linked warp 31 is not woven. CF _b) related to excellence in comparison with (CF a <a so that _{CF b),} connecting warp threads 31 are woven at a high density, a portion connecting warp threads 31 is not present is woven into sparse compared to the high-density ing.

<4.2> Tight band portion Referring to FIG. 5, the connecting warp yarn 31 is a portion where its single yarn is woven with the weft yarn 22 in a unit of one and woven with high density, and woven with high density Are formed as a narrow band-like dense band portion 23.
The tight band portion 23 is intermittently formed along the weaving direction of each of the fabrics 20a and 20b, and the connecting cords 30a and 30b extend from the end of the tight band portion 23.

<4.3> Reason for Forming the Tight Band Part The narrow side of the tight band section 23 is formed by weaving the fabric side of each of the connecting cords 30a and 30b at a high density. This is in order to increase the resistance of the warps 31 and wefts 22) to increase the drag prevention effect of the linked warps 31).

[Characteristics of fabric formwork]
The characteristics of the fabric form 10 will be described.

<1> Filling of Solidification Material In FIG. 1, the cloth mold 10 is spread and laid at the installation site.
A slurry-like consolidated material 40 is filled (pressed) into the mold space 11 through an inlet provided in a part of the fabric form 10 to construct a flat floor slab concrete protection structure.
Although each dough 20a, 20b swells by filling the binding material 40, the surface of the cloth form 10 is formed into a smooth uneven shape by the connection cords 30a, 30b regulating the swelling of each dough 20a, 20b constant. Be done.

The tension of each connecting cord 30a, 30b increases with the filling of the solidifying material 40.
Since each connecting cord 30a, 30b is composed of a plurality of connecting warps 31 so as to be able to withstand the filling pressure of the consolidated material 40, the connecting cords 30a, 30b break when filled with the consolidated material 40. There is no.
The tension of each connecting cord 30a, 30b is transmitted to each fabric 20a, 20b tight band 23 through a plurality of connecting warps 31.
The dense band portion 23 is woven with high density so that the cross resistance between the connecting warps 31 and the wefts 22 becomes large, so that the connecting warps 31 do not slip even if the tensile force caused by the expansion force acts As a result, each dough 20a, 20b is not drawn.
As described above, even if the filling pressure of the consolidation material 40 acts, the doughs 20a and 20b do not draw back, so that they are connected to the surface of the cloth form 10 during or after the consolidation material 40 is filled. No wrinkles are caused due to drawing of the warp yarns 31 and the surface of the concrete protective structure is finished to a clean molding surface.

<3> Holding of fabric interval Since a slip does not occur in each connected warp 31 woven into each fabric 20a, 20b, the transverse length (connection distance) of each connected warp cord 30a, 30b connecting between both fabrics 20a, 20b Does not change.
Since the connecting lengths of the connecting cords 30a and 30b do not change, the maximum thickness and the minimum thickness of the concrete protection structure obtained by filling the consolidating material in the mold space 11 become uniform.

<4> Filling Property of Solidified Material Since each of the connecting cords 30a and 30b located in the mold space 11 has a band-like shape, the area of resistance to the solid material is small.
In addition, since the gap G is provided between the adjacent connection cords 30a and 30b, the consolidated material is easily transmitted through the gap G.
Therefore, even if the connecting cords 30a and 30b cross in the formwork space 11, the flow of the consolidation material does not get blocked, and the consolidation from the injection port of the cloth formwork 10 is made as compared with the conventional case. The filling distance of the material is increased, the filling property of the solidifying material is improved, and the solidifying material can be filled in the entire area of the mold space 11.
Therefore, it is not necessary to increase the number of injection ports or mix the fluidizing agent in the consolidated material in order to fill the entire area of the mold space 11 with the consolidated material.

[Other embodiments]
Hereinafter, other embodiments will be described, but in the description, the same parts as those of the above-described embodiments are denoted by the same reference numerals, and the detailed description thereof will be omitted.

<1> A bag body reinforced with reinforced wefts Referring to FIG. 6, an embodiment in which reinforcing weft yarns 32 are additionally arranged to reinforce the respective fabrics 20a and 20b will be described.
In this example, a plurality of reinforced weft yarns 32 are woven and reinforced in the vicinity of the root of the tight band portion 23 from which the connecting cords 30a and 30b are pulled out.
The reinforced weft yarn 32 may be a yarn of the same diameter as the weft yarn 22 and of the same quality, but a yarn larger in diameter than the weft yarn 22 or high in strength may be used.

<2> Effects of the present example Each cloth 20a, 20b is expanded by filling the consolidating material in the fabric form 10, but a connecting cord 30a, 30b in which a plurality of portions of each cloth 20a, 20b cross in an X shape. In the case where the fabric form 10 is expanded, excessive tension may act on some of the weft yarns 22 to cause breakage.
In this example, by additionally arranging the reinforcing weft yarn 32 at a portion where breakage is expected, breakage of the weft yarn 22 can be effectively prevented at the time of expansion of the cloth mold 10.
The use of a yarn having a diameter larger than that of the weft yarn 22 or a yarn of high strength as the reinforced weft yarn 32 further enhances the effect of preventing the weft yarn 22 from breaking.

DESCRIPTION OF SYMBOLS 10 ... Fabricated formwork 11 ... Formwork space 20a .. Upper cloth 20b .. Lower cloth 21 ... Warp 22 ... Weft 23 ... Secret part 30 ... Connection cord 31 · · Connection warp G · · · · Gap between adjacent connection cords

Claims (4)

Consists of upper and lower fabrics in which warp and weft are plain-woven, and connecting warps along a part of the warps are woven by crossing X shape between both fabrics separated from each other, and crossing of the connecting warp between both fabrics A fabric formwork for forming a long mold space, filling the consolidation material in the mold space, and forming a floor-plate-like concrete protective structure,
The two fabrics are connected by a plurality of connecting cords in which a plurality of connecting warps are bundled and crossed in an X shape,
The two fabrics are woven with different cover factors so that the cover factor of the part into which the connecting warp is woven is superior to the cover factor of the part into which the connecting warp is not woven ,
A dense band portion is formed in a range in which the connecting warp and the weft are woven with high density on the both fabrics .
Fabric formwork.   The fabric form according to claim 1, characterized in that there is a space through which the consolidated material can permeate between adjacent connecting cords. The fabric form according to claim 1 , wherein the tight band portion is intermittently formed along the weaving direction of each fabric.   The fabric form according to claim 1, wherein the fabric is reinforced by additionally arranging a plurality of reinforcing wefts parallel to the wefts.

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