JPH1082031A - Cloth form with borrow-material receiving section - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fabric laying works by composing cloth forms of a fabric, in which circular single weaving sections are arrayed regularly and disposed into a double fabric section surface, arranging the centers of the single weaving sections at the apices of an isosceles triangle, cutting off central sections and preparing through- hole sections. SOLUTION: Double fabric layers 3 are formed continuously around circular single weaving sections 2, and the filling space of curable slurry such as mortar is prepared between upper-lower two-layer fabrics. In one double fabric form, the single weaving sections 2 have each uniform circular size, and each circular center forms an isosceles triangle A with the centers of the adjacent circular single weaving sections 2 and is placed. The partial peripheral sections (b) of the diameters of the circular single weaving sections 2 are cut off at that time, and through-hole sections (c) are formed at central sections. Double weaving forms having desired concrete placing width are adjusted on the field of placing by forwarding the obtained double fabrics 3 onto the field of the execution of works and seaming the double fabrics 3 in the weaving width direction. Accordingly, the double weaving sections 3 and the single weaving sections 2 are seamed easily at ends in the weaving width direction on the field of placing, and also tied even by connection and combination, and structures having a uniform shape can be formed even in connecting sections.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-woven fabric form which is advantageous for forming a hardened structure of concrete, mortar or the like, particularly a seawall or a slope having a perforated soil receiving portion. It is.

[0002]

2. Description of the Related Art A double woven fabric in which a bag structure is formed by partially joining two layers of woven fabric in a single woven portion is used in a formwork method for concrete, mortar and the like. I have. This formwork method of laying this double-woven formwork on slopes of coasts and rivers and casting concrete, mortar, etc. in-situ can form a seawall structure in a safe, quick and simple manner. It is widely recognized that this is an advantageous method.

[0003] By applying the double woven formwork method, concrete structures of various shapes can be easily formed on the slopes, but concrete structures suitable for coastal and river renovation and slope protection are formed. There remains a technical problem to be improved with regard to the possible double-woven formwork method. One of them is an improvement of a woven formwork suitable for forming a slope protection concrete structure having a through hole for drainage and a hole for vegetation by a double woven form method.

Conventionally, in a woven formwork method of a slope protection concrete structure having a drainage through hole and a vegetation through hole, two layers of woven fabric are partially connected to each other at a bonded single woven portion to form a bag structure. After laying the heavy woven formwork on the slope and casting and solidifying the concrete slurry on site, the single woven part is cut off at the site to open a through-hole, and this cut-through through hole forming work is very time-consuming. there were.

On the other hand, in this construction method, in order to reduce costs, tappet machines with low weaving costs and double woven formwork woven by dobby machines have been used, so tappets are exclusively used in weaving technology. Double woven formwork having a square or rectangular single weave that can be woven on a dobby machine has been used. For this reason, at present, little consideration has been given to the performance of placing concrete structures with double woven formwork having a single weave portion shape other than square or rectangular.

[0006] The problem of the double woven formwork in the woven formwork method for the slope protection concrete structure is not only the above-mentioned problem of the on-site cutting work of the single woven part after the concrete slurry is cast and solidified. It is important to use a double woven formwork that can form a concrete revetment structure with a uniform shape on the slope from the bottom of the slope to the heaven.
It is also desired to create a formwork that allows stable and easy laying of the formwork on the slope. Construction of concrete revetment structures with a uniform shape on the slope from the bottom of the slope to the heavens, especially double concrete structures that allow for uniform distribution of through holes for drainage and vegetation on the slope In the woven formwork method, the development of a double woven formwork improved in terms of the shape, arrangement, and dispersion conditions of the single woven part, in which the poured concrete, mortar, etc. slurry is filled in a uniform shape over the front of the slope, Longed for.

An object of the present invention is to provide an improved double-woven formwork for obtaining a slope protection concrete structure having drainage holes and vegetation holes, which solves the above-mentioned problems. .

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to comprise a double woven portion and a plurality of substantially circular single woven portions,
The circular single woven portion is formed of a woven fabric that is regularly arranged and dispersed in the surface of the double woven fabric portion, and the circular single woven portion is arranged with the center of the circle at the apex of an isosceles triangle, and This is achieved by a double-woven formwork whose central part has been cut out to form a through-hole.

The double woven fabric form of the present invention has the following effects based on the circular single woven portions in which the circular single woven portions are uniformly dispersed and arranged in the plane of the double woven fabric. (1) The flow of the poured concrete, mortar, etc. becomes smooth, the pressure applied to the woven fabric can be made more uniform, and the elongation stress of the woven fabric from a flat body to a cubic surface is evenly dispersed and expressed. Therefore, a solidified concrete structure having a uniform shape spread over the entire slope can be formed.

(2) A double-woven fabric form having a through hole for receiving or draining vegetation soil or the like in advance is laid in the center while leaving a peripheral portion of a circular single-woven portion, so that a square, rectangular, or the like is laid. The shape and dimensions of the through-holes are stable and uniform over the entire surface of the formwork compared to the single-layer square weave, and a slope protection concrete structure with excellent functions and aesthetic appearance is formed. it can. Especially, the inclination angle of the array is 45 °
In this case, the appearance is remarkably better as compared with a rectangular receiving or drainage structure such as a rectangle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a diagram schematically illustrating a plan view structure of a double woven fabric having a circular single woven portion constituting the double woven fabric form of the present invention. In FIG. 1, double fabric (1)
Is a woven fabric having a planar structure in which a plurality of circular single woven portions (2) are arranged at equal intervals. Around the circular single woven part (2), a double woven layer (3)
Are formed continuously, and a bag-like space in which a slurry of a hardening material such as concrete or mortar is injected and filled between the upper and lower two layers of fabric. In one double-woven formwork, the circular single woven sections each have substantially uniform circular dimensions, and the center of each circle (o) is the center of the circle of the adjacent circular single woven section (o). o) and are arranged so as to form an isosceles triangle (A) with each other, the diameter of which is at least greater than about 50 mm. The area ratio of the circular single woven portion to the area of the double woven fabric in the double woven fabric form is selected from a range of about 5% to 85%, preferably 8 to 50%, and the size is selected for the purpose of construction of the concrete structure. Depending on the thickness is about 8 to about 25cm
The plane dimensions and the like of the double woven portion that gives the filling volume necessary to form the concrete structure of the present invention are determined. When the area ratio of the circular single woven part in the formwork is around 10%,
It is possible to form a concrete structure with an excellent revetment effect from the underwater to the shore of lakes and rivers. Formwork in which the area ratio of the circular single weave portion in the formwork is 10% or more is effective for fabric formwork construction for the purpose of protecting vegetation revetment slopes.
Even when the area ratio of the circular single weave portion in the formwork is around 70 to 85%, it is suitable for the slope protection method mainly using vegetation having a uniform shape.

The double woven fabric having a delicate circular single woven portion is preferably woven by using a Jacquard loom. Further, as shown in FIG. 1 and FIG. 2, the circular single woven portion has a diameter (cD) of, for example, a diameter (cD) using a hot knife or the like while leaving a part of the peripheral portion (b) of the diameter (2D) of about 5 mm to 10 mm. And the central portion thereof is provided with a through-hole (c) having an area as large as possible (see FIG. 2).

The double woven fabric thus obtained is provided to a laying construction site. Generally, at a laying construction site, an arbitrary number of double woven fabrics prepared as described above are stitched (B) with a sewing machine or the like in the weaving width direction (weft direction) to have a desired concrete casting width. Is prepared at the casting site. When preparing a combined form by combining a plurality of double fabrics in the width direction, in order to obtain a combined connected form in which the dispersed arrangement of the through-holes (c) is uniform, the double fabric is required. It is preferable that weaving is performed so that the arrangement of the circular single weave portion is uniformly included in the width direction (weft direction) of the fabric. By weaving the double woven fabric to be connected to such an arrangement structure, it becomes easy to sew the double woven portion and the single woven fabric together at the end of the woven fabric at the casting site, It is possible to form a concrete structure having a uniform shape even at the connection portion by connecting the connection and the connection.

The material for forming the double-woven fabric form of the present invention is woven using long fiber yarns of nylon fiber, polyester fiber and polyolefin fiber.
The weaving specifications of the woven fabric, such as the weaving density of the warp and the weft, are selected according to a known woven formwork method.

[0015]

【Example】

(Examples 1 to 4) A double woven fabric having four types of circular single woven portions shown in Table 1 having different shapes, dimensions and arrangements of circular single woven portions was woven, and a construction test was performed using the double woven form shown in FIG. Was done. The weaving of the double woven fabric is performed with a weaving width 200 equipped with a jacquard in the opening device and a rapier method in the weft insertion method.
Weaving was performed at 300 times / minute using a cm loom. The yarn used was a two piece twisted yarn (100 t / m) of nylon 66 long fiber yarn (840d / 140f) for warp, and the above nylon 66 long fiber yarn for weft. Yarn density is 3 for reed density as warp.
8 wings / 10 cm, 4 pull-in, actual weaving density of double weaving part 21 / in, weft weaving actual density 23 / i
n.

[0016]

[Table 1]

The obtained double woven fabric having a length of 10 m was stitched three times in the width direction (B) to prepare a double woven form. As shown in FIG. 6, this form (100) is
It is laid on a slope (200) at 3 to 35 °, fixed to a stake (104) with a lever block (103), and provided with a mortar inlet (102) in the center of the upper part. An injection test was performed. The mortar was injected by transferring the mortar from the mixer truck to the pump truck, pressurizing the mortar, inserting the mortar into the injection port (102) of the test mat via the injection hose (101), and performing the injection. For the conditions such as the flow rate and pressure of the mortar, general casting conditions performed at the construction site were adopted.

As Comparative Examples 1 and 2, using a double woven fabric (1) in which rectangular single woven portions (2) shown in FIGS. 4 and 5 are arranged and woven, a slit or a hole portion (c) is formed in the single woven portion. ) A double woven formwork (100) was prepared and a construction test was performed in parallel under the same conditions as in the example. A slit (S) or a rectangular through hole was provided in a single woven portion of the mold of the comparative example.

Table 2 summarizes the evaluation of the mat-like concrete structures obtained as a result of the construction tests of the examples and comparative examples.

[0020]

[Table 2]

As is clear from Table 2, the mat-like concrete structures formed by the double-woven formwork of Examples 1 to 4 have excellent uniformity in shape and size, and have a structure having a through-hole. The bulge of the concrete structure around the pile and the surrounding area was uniform, and there was no unevenness in shape. The area ratio of the soil receiving portion of the mat-shaped concrete structure by the molds of Examples 1 to 3 (a panel of 15 persons observed the structure from above and visually determined the ratio) was the structure of the comparative example. There is a significant difference compared to. That is, in the mold of the comparative example, the swelling shape after concrete injection and filling was not uniform, the area of the single woven portion became relatively large, and the appearance of the obtained mat-like concrete structure was inferior.

[0022]

The double woven formwork of the present invention is an improved woven formwork for revetment and slope protection having the following effects. (1) By making the single woven portion circular, the flow of the slurry of the concrete or mortar to be poured in the woven form can be made smooth and uniform, and a concrete structure having a uniform shape can be formed. (2) Adjacent circular single weaving parts are arranged and dispersed so that their centers are connected by the vertices of an isosceles triangle, so that the elongation stress and the slurry when the double weaving part expands due to the injection pressure of the concrete slurry. The shrinkage load of the woven fabric that brings about the drawing effect of the kneading water can be made uniform, and a concrete structure having a uniform shape can be cast. (3) Since the woven formwork in which the single woven portion is cut in advance and the through-hole is formed is used for the construction, the laying work of the woven fabric at the casting site can be performed easily and easily. In addition, it is possible to eliminate the necessity of forming a through-hole after the casting, and it is possible to perform low-cost slope protection work. (4) The aesthetics of the slope protection structure can be enhanced by the actions (1) and (2).

[Brief description of the drawings]

FIG. 1 is an explanatory view of an arrangement of a circular single woven portion of a double woven form according to the present invention.

FIG. 2 is a view for explaining the structure of a through-hole provided in a circular single woven portion of the double-woven fabric form of the present invention.

FIG. 3 is an explanatory view of the shape, size, and arrangement of a circular single woven portion in the double woven form according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram of a shape, a size, and an arrangement mode of a rectangular single woven portion in a double woven formwork of Comparative Example 1.

FIG. 5 is an explanatory diagram of a shape, a size, and an arrangement mode of a rectangular single woven portion in a double woven formwork of Comparative Example 2.

FIG. 6 is an explanatory diagram of a formwork execution test of the double woven formwork of the example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Double woven fabric which has a circular single woven part 2 ... Single woven part 3 ... Double woven part b ... Peripheral part of the through-hole part (c) c ... Through-hole part (c) 200 ... Double woven formwork

Claims (1)

[Claims] 1. A double woven portion and a plurality of substantially circular single woven portions, wherein the circular single woven portion is made of a woven fabric which is regularly arranged and dispersed in the surface of the double woven portion, A double-woven fabric form in which the circular single-woven portion has the center of the circle arranged at the apex of an isosceles triangle and the central portion is cut off to form a through-hole portion.