KR20220078930A - Weaving structure of civil engineering fabrics with high-water-permeability - Google Patents

Abstract

The present invention relates to a weaving structure of a civil engineering woven fabric having a weaving structure capable of controlling the water permeability, and more specifically, a multifilament yarn of high fineness or a film-like yarn having a large long radius of the fiber cross-section as the weft yarn. As a weaving structure made by interweaving so that the weft yarns overlap each other by controlling the order,
The first weft yarn and the third weft yarn are wefted so as to be located on the lower side, and the second weft yarn is wefted so that the second weft yarn is placed on the upper side so that one end of the first weft yarn and the third weft yarn are both sides of the second weft yarn. It has a weft weft structure woven so that a permeable passage is formed between the first weft and the third weft, and the weft weft structure is in the oblique direction. Disclosed is a weaving structure of a highly permeable civil engineering woven fabric, characterized in that it is repeatedly formed.

Description

Weaving structure of civil engineering fabrics with high-water-permeability

The present invention relates to a weaving structure of a civil engineering woven fabric having a weaving structure capable of controlling water permeability, and more specifically, a multifilament or film-like yarn having a large long radius of a fiber cross-section is used, and the weft yarn according to the weft order By wefting so that some surfaces of the weft and weft yarns overlap each other, the water permeability can be adjusted in the vertical direction through the weaving structure overlapping each other, and the valleys formed by forming valleys and mountains by the weft yarns are formed as a permeability and horizontal It relates to a weaving structure of a highly permeable civil engineering woven fabric having a weaving structure that can induce permeability in the direction.

Attempts to use textile materials for various civil works have been made for a long time. Among them, Geosynthetics, a polymer synthetic resin product, has been developed and recently reinforced and separated for various civil structures based on excellent workability, applicability and economic feasibility. , is widely used for drainage and erosion prevention.

Types of geosynthetics include geonet as drainage material, nonwoven fabric for drainage/separation/filtration, water-repellent geomembrane and clay barrier material (GCL), geogrid for reinforcement, and complex geotextile for filtration/separation/reinforcement use, etc. can be heard

In general, the grid-type geogrid used for structural reinforcement in architecture or civil engineering works is a plastic geogrid in which polymer moldings such as high-density polyethylene or polypropylene are drilled in a grid shape and uniaxially or biaxially stretched (GB2266540, USP4374798, EP0374365A, GB2256164A) and a textile geogrid (USP 5091247) in which synthetic fibers are knitted or woven in a grid shape and then the surface is coated with a synthetic resin such as polyvinyl chloride, rubber, or latex.

Since such a geogrid has excellent tensile strength, it smoothly performs the reinforcement function in the area where the load is intensively applied.

However, since the geogrid has a relatively large grid-like external structure, it is not possible to effectively control the consolidation of various materials, particularly, when fine-grained soil with high moisture content penetrates the geogrid, and the particles of the soil penetrate the geogrid When moving, an empty space is generated in the soil left behind, and this phenomenon is accelerated when the flow rate of water or other fluids increases, thereby destroying the structure of the soil as a structure and the form of civil structures.

On the other hand, the nonwoven fabric is manufactured in the form of a fiber sheet by laminating and compressing short fibers of synthetic fibers such as polyester or polypropylene alone or in a mixed state, and then entangling them by methods such as needle punching and spun bonding. , it is known that the nonwoven fabric can be effectively used as a material for separation, filtration, and drainage of soil and other substances because it has a number of through holes.

However, since the nonwoven fabric has a high tensile strain of several tens of percent or more and its tensile strength is weak, it is easily deformed against the self-load of civil structures for a long period of time. If it is not as large as a gram, it will not be able to bear the resistance to the concentrated load.

In addition, in the relaxed nonwoven fabric, the through hole is enlarged and soil and the like easily penetrate, and as a result, the so-called clogging phenomenon that closes the through hole of the nonwoven fabric occurs.

Therefore, for the reinforcement of the ground with high moisture content or the reinforcement of the reinforced soil retaining wall, which requires the use of backfill soil with high moisture content, there was the inconvenience of partially overlapping the geogrid and the nonwoven fabric or constructing it densely, extending the construction period and reducing the construction cost. increase, which caused the complexity of the work specification.

1. Republic of Korea Patent Publication No. 10-0772050 2. Republic of Korea Patent Publication No. 10-2003-0097575 3. Republic of Korea Patent Publication No. 10-1193150

In the present invention, using a multifilament yarn or film yarn of high fineness with a large long radius of the fiber cross section, and weft yarns are vertical through the weaving structure overlapping each other by wefting so that some surfaces of the weft and weft yarns overlap each other according to the weaving order. The weaving structure of a highly permeable civil engineering woven fabric having a weaving structure that can control water permeability in the direction To provide is the solution.

The weaving structure of the high-permeability civil engineering woven fabric of the present invention, which has solved the above problems, uses multifilament yarns of high fineness or film-like yarns with a large long radius of the fiber cross-section as weft yarns to control the weft order of weft yarns, As a weaving structure made by weaving so that the weft yarns overlap each other,

The first weft yarn 10 and the third weft yarn 30 are wefted so as to be positioned on the lower side, and the second weft yarn 20 is wefted so that it is positioned on the upper side, and the first weft yarn 10 and the third weft yarn are wefted to be positioned on the upper side. One end of the weft yarn 30 is partially overlapped with both ends of the second weft yarn 20 so that the overlapping portions 40a and 40b are formed, and the first weft yarn 10 and the third It has a weft weft structure woven so that a permeable channel 50 is formed between the weft yarns 30,

It is characterized in that the weft weft structure is repeatedly formed in the warp (60) direction.

Here, the first, second and third weft yarns use a multifilament yarn or film-like yarn having a fineness of 2000 to 8000 denier, and the warp is characterized by using a multifilament yarn having a fineness of 1500 to 8000 denier.

Here, the weaving structure is woven so that the warp part tensile strength (kN/M) 100~400 kN/M, tensile elongation 12~15%, weft section tensile strength 100~400kN/M, tensile elongation 12~15% characterized.

Here, the overlapping portions 40a and 40b of the second weft yarn 20 of the first weft yarn 10 and the third weft yarn 30 are 60% or less of the major radius of the second weft yarn 20. It is characterized in that they overlap as much as possible.

Here, the overlapping portion 40a of the first weft yarn 10 is wefted to have a width W1 of 10 to 30% of the long radius of the second weft yarn 20, and the third weft yarn 30 The overlapping portion of the second weft yarn (20) is characterized in that it is wefted to have a width (W2) of 10 to 30% compared to the long radius.

The weaving structure of the high-permeability civil engineering woven fabric provided in the present invention provides high construction resistance such as separation and reinforcing functions inherent as a civil engineering woven fabric by weaving it to form a permeable passage in the horizontal direction, and high water permeability can be secured. there are advantages to

1 is a cross-sectional view showing a weaving structure of a woven fabric according to an embodiment of the present invention.
Figure 2 illustrates a sample fabric design diagram of the woven structure of the woven fabric according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a weaving structure of a civil engineering woven fabric having a weaving structure capable of controlling water permeability, and more specifically, a multifilament or film-like yarn having a large long radius of a fiber cross-section is used, and the weft yarn according to the weft order By wefting so that some surfaces of the weft and weft yarns overlap each other, the water permeability can be adjusted in the vertical direction through the weaving structure overlapping each other, and the valleys formed by forming valleys and mountains by the weft yarns are formed as a permeability and horizontal The purpose of this is to provide a weaving structure of a highly permeable civil engineering woven fabric having a weaving structure that can induce permeability in the direction.

The weaving structure of the high-permeability civil engineering woven fabric according to the present invention for achieving the above object uses multifilament yarns of high fineness or film-like yarns having a large long radius of fiber cross-section as weft yarns to control the weft order of weft yarns to cross-weave Thus, as having a weaving structure made by wefting so that the weft yarns overlap each other, this will be described with reference to the attached drawing FIG. 1 ,

The first weft yarn 10 and the third weft yarn 30 are wefted so as to be positioned on the lower side, and the second weft yarn 20 is wefted so that it is positioned on the upper side, and the first weft yarn 10 and the third weft yarn are wefted to be positioned on the upper side. One end of the weft yarn 30 is partially overlapped with both ends of the second weft yarn 20 so that the overlapping portions 40a and 40b are formed, and the first weft yarn 10 and the third It is woven to have a weft weft structure woven such that a permeable passage 50 is formed between the weft yarns 30 , and the weft weft structure is configured to be repeatedly formed in the warp 60 direction.

According to the present invention, preferably, the first, second and third weft yarns use multifilament yarns or film-like yarns having a fineness of 2000 to 8000 denier, and the warp is to use multifilament yarns having a fineness of 1500 to 8000 denier. At this time, when the fineness of the weft yarn is less than 2000 denier, the effective density of the design fabric is increased and the vertical permeability is lost. can

In addition, when the fineness of the warp is less than 1500 denier, the effective density of the design fabric increases and vertical permeability is lost. of the fabric is formed, there may be a problem in forming the structure of FIG. 1 and the difficulty of weft weaving.

According to the present invention, the weaving structure is such that the warp portion tensile strength (kN/M) 100 ~ 400 kN / M, tensile elongation 12 ~ 15%, weft portion tensile strength 100 ~ 400 kN / M, tensile elongation 12 ~ 15% It is characterized by being weaved.

According to the present invention, preferably the overlapping portions 40a, 40b of the second weft yarn 20 of the first weft yarn 10 and the third weft yarn 30 are the major radius of the second weft yarn 20 . It will overlap so that it is less than 60% of If the overlapping portion overlaps by more than 60% of the long radius of the second weft, the permeability formed according to the weft of the weft becomes too narrow, making it difficult to secure the water permeability desired in the present invention. have.

According to the present invention, preferably, the overlapping portion 40a of the first weft yarn 10 is wefted to have a width W1 of 10-30% compared to the major radius of the second weft yarn 20, and the third The overlapping portion of the weft yarn 30 is preferably wefted so as to have a width W2 of 10 to 30% compared to the major radius of the second weft yarn 20 . The first and third weft yarns are not specifically limited, but preferably, the first and third weft yarns are preferably placed so that they are symmetrical with respect to the central axis of the second weft yarn. .

A sample weaving design was carried out based on the weaving structure of the present invention described above, and after weaving according to the sample design, tensile strength, tensile elongation and water permeability were tested, and the results are shown in FIG. It's like a bar.

Referring to Figure 2, (a) of Figure 2 (a) uses a multifilament yarn satisfying the fineness of the warp of 1500 ~ 3000, the weft yarn using a multifilament yarn of 2000 ~ 3000 denier the weft and the warp cross each other It is a weaving structure designed to have a weaving structure.

2 (b) to (e) are designed to have a weaving structure according to the present invention, and were woven by designing different fineness of warp and weft yarns. In Figure 2 (b), the warp yarn having a fineness of 1500 to 3000 denier was used, the weft yarn having a fineness of 2000 to 3000 denier was used, (c) is a warp yarn having a fineness of 3000 to 5000 denier, and Weft yarns having fineness of 3000 to 5000 denier were used, (d) was using those having fineness of warp 4500 to 8000 denier, weft yarns having fineness of 4500 to 8000 denier were used, and (e) is fineness of warp yarns. A thing having 4500 ~ 6000 denier was used, and a weft yarn having a fineness of 1000 ~ 2000 denier was used.

A woven fabric was woven according to the weaving design diagram of FIGS. 2 (a) to (e), and the tensile strength, tensile elongation and water permeability of the woven fabric were measured, and the results are as shown in FIG. 2 .

As a result of measuring the tensile strength, tensile elongation and water permeability of the woven fabric, (b) to (d) of FIGS. 2 (b) to (d) having the weaving structure according to the present invention showed satisfactory results in each physical property, and in particular, the water permeability was very It was found that excellent results were obtained.

In the case of (a) of FIG. 2 , it was found that the result values were excellent in tensile strength and tensile elongation, but it was found that the water permeability was very poor at 60 (litter/min/m 2 ) in water permeability. This is considered to be because the fineness of the applied yarns of the warp and weft yarns is the same, and there is a problem in the structure that a vertical permeation channel cannot be formed in a one-to-one plain weave structure.

Figure 2 (e) has a weaving structure according to the present invention, there is no significant difference in tensile elongation, the tensile strength has very excellent physical properties in the warp direction, but the tensile strength in the weft direction is very low It was found to have physical properties, and it was found that the water permeability also exhibited a low measured value. It is determined that this is because the difference occurs due to the difference in the fineness of the weft yarn applied to the weft yarn and the fabric structure as a result of the weft fineness deviating from the threshold of the present invention.

As described above, when the woven fabric according to the present invention is designed to have a woven structure according to the results of FIGS. 2 (b) to (d), the tensile strength and tensile elongation of the woven fabric are excellent, and in particular It was found that the permeability was very high.

The weaving structure of (a) to (e) of Fig. 2 in the above detailed design drawing is (a) warp 1500d, weft yarn 1500d, (b) warp 1500d, weft yarn 2250d in Fig. 2 (c) warp 3000d , Weft yarn 5000d, Fig. 2 (d) warp 6000d, weft yarn 8000d, Fig. 2 (e) warp 4500d, weaving structure diagram for the weft yarn 1500d.

10: first weft
20: second weft
30: third weft
40a, 40b: overlap
50: as a pitcher
60: slope

Claims (5)

It is a weaving structure made by interweaving multifilament yarns of high fineness or film-like yarns with a large long radius of fiber cross-section as weft yarns to control the weft weft order and interweaving so that the weft yarns overlap each other,
The first weft yarn and the third weft yarn are wefted so as to be located on the lower side, and the second weft yarn is wefted so that the second weft yarn is placed on the upper side so that one end of the first weft yarn and the third weft yarn are both sides of the second weft yarn. It has a weft weft structure woven so that a part is overlapped at the end so that an overlap is formed, and a permeable passage is formed between the first weft and the third weft,
The weaving structure of the highly permeable civil engineering woven fabric, characterized in that the weft weft structure is repeatedly formed in the oblique direction.
The method of claim 1,
The first, second and third weft yarns use a multifilament yarn or film-like yarn having a fineness of 2000 to 8000 denier, and the warp is a highly permeable civil engineering woven fabric, characterized in that a multifilament yarn having a fineness of 1500 to 8000 denier is used. of the weaving structure.
The method of claim 1,
The weaving structure is characterized in that it is woven so that the warp part tensile strength (kN/M) 100~400 kN/M, tensile elongation 12~15%, weft section tensile strength 100~400kN/M, tensile elongation 12~15% Weaving structure of highly permeable civil engineering woven fabric.
The method of claim 1,
The weaving structure of the highly permeable civil engineering woven fabric, characterized in that the overlapping portion of the second weft yarn of the first weft yarn and the third weft yarn overlaps to be 60% or less of the major radius of the second weft yarn.
The method of claim 1,
The overlapping portion of the first weft yarn is wefted to have a width W1 of 10 to 30% of the major radius of the second weft, and the overlapping portion of the third weft yarn is 10 to 30% compared to the major radius of the second weft yarn The weaving structure of the high permeability civil engineering woven fabric, characterized in that the weave to have a width (W2) of.

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