KR100715216B1 - urethane resin type drawing out fabrication pipe and its manufacture method for reinforcing and grouting in the ground - Google Patents

Abstract

The present invention is to superimpose a plurality of layers of flex trend roving and multilayer continuous strand mat, single layer continuous strand mat made of reinforced glass fiber, and to integrate the polymer urethane resin and admixture by high pressure injection between the members, It is an object of the present invention to provide a high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin capable of increasing strength and a method of manufacturing the same.

High-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention for achieving the above object is a pipe of the uneven round tube form made by pultrusion, and made of tempered glass flex Trend roving and multi-layer continuous strand mat and single-layer continuous strand mat are passed through the knot and mandrel to inject urethane resin and admixture from the mixer into the injection box, and then rapid heating and rapid cooling in the draw mold connected to the injection box. It is integrated by one urethane pultruded pipe body, the outer circumferential surface of the body forms a pultruded pipe body is formed with an uneven surface, a predetermined portion of the pipe body is formed with a plurality of through holes for the discharge of the injection material, The through-hole valve is installed in the through-hole, the body In a predetermined portion of the pipe-type operation, a plurality of spacers for preventing the clogging of the valve is characterized in that installed at a predetermined interval.

In addition, the method of manufacturing high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention for achieving the above object is a flex fiber roving and multilayer continuous strand mat, single layer continuous strand The mat is passed through a knotted plate and a mandrel to an injection box made of ultra-high molecular polyethylene plastic, in which the polymer urethane resin and admixture are injected, and then integrated in a drawing mold by rapid heating and rapid cooling to form a high strength urethane. To form a concave-convex pull-out pipe body, a concave-convex surface is formed on the outer circumferential surface of the body, a predetermined portion of the pipe body to form a plurality of through holes for the discharge of the injection material, the one-way opening and closing valve is installed in the through hole And pipes to certain parts of the body. Characterized in that a plurality of spacers are formed at predetermined intervals to prevent clogging of the valve during the mouth operation.

Polymer urethane resin, ground reinforcement, grouting, high strength, drawn pipe

Description

Urethane resin type drawing out fabrication pipe and its manufacture method for reinforcing and grouting in the ground}

1 is a longitudinal sectional view showing a high strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin according to the present invention;

FIG. 2 is an enlarged detailed view of portion “C” of FIG. 1;

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along the line B-B of FIG.

5 is an enlarged detailed view of a portion “D” of FIG. 1;

Figure 6 is a perspective view showing a one-way opening and closing valve of the high-strength urethane drawn pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention,

7a to 7e is a front view showing a knot plate used in the production of high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention,

8 is a perspective view showing a cooling plate used in the production of high strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention;

Figure 9 is an illustration showing a drawing mold used in the production of high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin according to the present invention.

Explanation of symbols on the main parts of the drawing

100: ground reinforcement and grouting using polymer urethane resin

High Strength Urethane Pultruded Pipe

110: FlexTrend Roving
120: Duplex Continuous Strand Mat

130: single-layer continuous strand mat 140: through hole

150: one-way open valve 160: spacer

200: knot 300: mandrel

400: injection box 500: drawing mold

The present invention relates to a high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin for reinforcing ground strength by ground reinforcement and injection during civil works such as cut slope and tunnel construction, and a method of manufacturing the same.

In particular, the flex trend roving, multilayer continuous strand mat, and single layer continuous strand mat made of reinforced glass fiber are alternately overlapped in the form of multiple layer pipes, and the urethane resin and admixture are impregnated between the members to flex strand roving and By integrating a multi-layer continuous strand mat and a single-layer continuous strand mat, the strength of the pipe is increased, and a hemispherical spacer member and a one-way grouting valve are installed in the uneven pipe body to insert the reinforcement into the ground and grout. The present invention relates to a high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin capable of efficiently performing pressure injection of ash and a method of manufacturing the same.

 Conventionally, a pipe was manufactured and used in a hand layup method using a mat made of a glass fiber orthogonal.

Therefore, there was a problem that can not stand the vertical load and the internal pressure.

In addition, although the pipe is manufactured using a stitch mat manufactured in one direction by another conventional method, there is also a disadvantage in that it cannot be used in a facility that requires a certain strength due to its weakness in the vertical load due to lack of directivity.

Accordingly, the present invention has been made to solve the problems described above, overlapping the flextrend roving and multilayer continuous strand mat, single-layer continuous strand mat made of reinforced glass fibers in multiple layers, the members It is an object of the present invention to provide a high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin that can increase the strength of a pipe by integrating a polymer urethane resin and a admixture with a high pressure injection therebetween.

In addition, by installing a hemispherical spacer and a one-way grouting valve in the uneven pipe, high-strength urethane pultrusion molding for ground reinforcement and grouting using a polymer urethane resin that can efficiently insert the ground and pressure-inject the grout material The object is to provide a pipe and a method of manufacturing the same.

High-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention for achieving the above object is a pipe of the uneven round tube form made by pultrusion, and made of tempered glass flex Trend roving and multi-layer continuous strand mat and single-layer continuous strand mat are passed through the knot and mandrel to inject urethane resin and admixture from the mixer into the injection box, and then rapid heating and rapid cooling in the draw mold connected to the injection box. It is integrated by one urethane pultruded pipe body, the outer circumferential surface of the body forms a pultruded pipe body is formed with an uneven surface, a predetermined portion of the pipe body is formed with a plurality of through holes for the discharge of the injection material, The through-hole valve is installed in the through-hole, the body In a predetermined portion of the pipe-type operation, a plurality of spacers for preventing the clogging of the valve is characterized in that installed at a predetermined interval.

In addition, the method of manufacturing high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention for achieving the above object is a flex trend roving and multilayer continuous strand mat, single-layer continuous strand mat Is passed through five knots made of ultra high molecular polyethylene plastic and mandrel to an injection box made of ultra high molecular polyethylene plastic, in which the urethane resin and admixture are injected, and then rapidly heated and rapidly cooled in a drawing mold. It is integrated by the urethane concave-shaped pull-out pipe body to form a concave-convex surface on the outer peripheral surface of the body, a predetermined portion of the pipe body to form a plurality of through holes for the discharge of the injection material, Install one-way valve A predetermined portion of the body is characterized in that a plurality of spacers for preventing the blockage of the valve during the pipe type operation is formed by forming a predetermined interval.

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

Figure 1 is a longitudinal cross-sectional view showing a high-strength urethane concavo-convex pull-out pipe for ground reinforcement and grouting in accordance with the present invention, Figure 2 is an enlarged view showing a portion "C" of Figure 1, Figure 3 is It is AA sectional drawing, FIG. 4 is sectional drawing of the BB line of FIG. 1, FIG. 5 is a detailed view which expands the "D" part of FIG. 1, and FIG. 6 is the one direction of the high-strength urethane uneven-shaped pull-out pipe which concerns on this invention. 7 is a front view showing a knotted plate used in the manufacture of a high-strength urethane uneven draw pipe according to the present invention, Figure 8 is a high-strength urethane uneven draw according to the present invention 9 is a perspective view showing a cooling plate used in the manufacture of the pipe, Figure 9 is an exemplary view showing a drawing mold used in the production of a high-strength urethane uneven pull-out pipe according to the present invention.

As shown in these figures, the high-strength urethane pultruded pipe 100 for ground reinforcement and grouting using the polymer urethane resin according to the present invention is a pipe of the uneven round tube shape produced by pultrusion, reinforced A glass-made flextrend roving 110, a multilayer continuous strand mat 120, and a single-layer continuous strand mat 130 are passed through the knot 200 and the mandrel 300 to inject urethane resin and admixture from the mixer. It is injected into the box 400, and then integrated by rapid heating and rapid cooling in the drawing mold 500 connected to the injection box 400 to form a urethane pulled pipe body, the outer peripheral surface of the body is uneven A surface is formed, and a plurality of through holes 140 for discharging the injection material are formed in a predetermined portion of the pipe body, and the one-way open / close valve 150 is formed in the through holes 140. Is installed, a predetermined portion of the body is a structure in which a plurality of spacers 160 for preventing the blockage of the valve 150 during the pipe type work is installed at predetermined intervals.

Here, through the knot plate 200 and the mandrel 300 for integrating the flex trend roving 110, the multilayer continuous strand mat 120, the single-layer continuous strand mat 130 made of the tempered glass. The injection box 400 into which the polymer urethane resin and the admixture is injected is made of ultra high molecular polyethylene plastic, and the injection box 400 is assembled by bolting two polyethylene plates, and sealing the gap of the polyethylene plate to inject the box. Loctite 5900 Flange Sealant is used to prevent the outflow of the FlexTrend Roving 110 and the Multi-Layer Continuous Strand Mat 120 and the Single-Layer Continuous Strand Mat 130.

On the other hand, high-strength urethane pultruded pipe 100 using the ground reinforcement and grouting polymer urethane resin according to the present invention is a flex fiber roving 110 and a multilayer continuous strand mat 120, a single layer continuous strand, which is a glass fiber reinforcement as a whole The mat 130, a polymer urethane resin, a thermoplastic additive, an inorganic filler, an internal mold release agent, an organic peroxide, and a pigment are mixed in an appropriate weight ratio to form and manufacture the urethane uneven draw pipe 100.

Hereinafter, the production of high strength urethane pultruded pipe 100 for ground reinforcement and grouting using the polymer urethane resin according to the present invention having the structure as described above will be described.

Method for manufacturing high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention is a flex glass roving (110) and multilayer continuous strand mat (120), single-layer continuous strand mat (130) that is reinforced glass fiber Is passed through the knot plate 200 and the mandrel 300 is moved to the injection box 400 made of ultra-high molecular polyethylene plastic, the urethane resin and admixture is injected in the injection box 400, and then the drawing mold 500 ) Is integrated by rapid heating and rapid cooling to form a urethane uneven pull-out pipe body, the outer peripheral surface of the body to form a concave-convex surface, a predetermined portion of the pipe body a plurality of through holes for the discharge of the injection material ( 140 is formed, the through-hole 140 is provided with a one-way valve 150, a predetermined portion of the body during pipe type work A plurality of spacers 160 for preventing clogging of the valve 150 are formed at predetermined intervals and manufactured.

That is, the method of manufacturing high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention is a flexible glass fiber flex trend roving 110 and a multilayer continuous strand mat 120, single-layer continuous strand mat ( 130 is woven in the form of a pipe through five knots 200 and mandrel 300 made of ultra high molecular polyethylene plastic.

 The woven reinforcing glass fiber pipe is generated strength that can respond appropriately to the vertical load, and has a pressure resistance to withstand the internal pressure.

The multilayer and monolayer continuous strand mats 120 and 130 and the flex trend roving 110 are moved along the knot plate 200 and the mandrel 300 to an injection box 400 made of ultra high molecular polyethylene plastic, and the injection is performed. In the box 400, a polymer urethane resin and a admixture are injected, and then, in the drawing mold 500, integrated by rapid heating and rapid cooling to form a single urethane uneven type drawing pipe body.

Here, the cooling plate 600 is located between the injection box 400 and the drawing mold 500, which is the polymer of the injection box 400 by the rise of the inlet temperature of the drawing mold 500 is rapid heating It is a member which prevents urethane resin and admixture from hardening and destroying early.

Particularly, the cooling plate 600 is made of aluminum having a thickness of 25 mm (1 inch), a hole having a diameter of 60 mm is formed at the center of the wide surface of the cooling plate 600, and a hole for circulating cooling water is formed in the narrow surface. .

The cooling plate 600 should always operate in the range of 18 ° C to 21 ° C, the inlet portion of the forming mold 500 is made of rapid heating, the outlet portion is made of rapid cooling is a multi-layer and single-layer continuous strand mat (120, 130 and the flex trend roving 110 is hardened by the integration of the polymer urethane resin and admixture.

As shown in FIG. 9, the drawing mold 500 corresponds to an inlet portion of the drawing mold 500 including a cooling plate 600 as a part for cooling. The cooling water inlet and temperature are monitored in real time. .

② The part is heated by strip heater of 1400W as a heating start part, and it can control temperature during operation.

③ The part is heated up to 193 ℃, and reaches 132 ℃ when it reaches 132 ℃.

Here, the heating unit has a total of six heaters, and the length is approximately 10 to 12 inches (two on the bottom and the top, and one on each side).

④ and ⑤ correspond to the cooling part. When the temperature of the heating part reaches 132 ° C., the heating stops and is moved to the rapid cooling part.

The proper normal temperature of a cooling part is 93 degrees C or less, and the length is about 18-20 inches.

Accordingly, the multilayer and single layer continuous strand mats 120 and 130 and the flex trend roving 110 are integrated with a urethane resin by a rapid heating and rapid cooling in the drawing mold 500 as described above. Urethane concave-convex pull-out pipe bodies are formed.

A concave-convex surface is formed on the outer circumferential surface of the urethane concave-shaped pull-out pipe body, and a predetermined portion of the pipe body forms a plurality of through-holes 140 for discharging the injection material, and a one-way open / close valve in the through-hole 140. After the installation of the 150, a predetermined portion of the body is provided with a plurality of spacers 160 to prevent the blockage of the valve 150 in the pipe-type operation when a series of high-strength urethane irregularities for ground reinforcement and grouting Forming pipe 100 is manufactured.

As described above, the high-strength urethane pultruded pipe for ground reinforcement and grouting using the polymer urethane resin according to the present invention, and a method of manufacturing the same have the following effects.

First, the present invention by forming a reinforced glass fiber in a certain layer and then integrally manufactured by high-pressure injection of a urethane resin and admixture between the layers, it can have a strength that can be strongly resistant to vertical load and pressure, corrosion resistance, heat resistance, Cold resistance, radio wave transmission, environmental friendliness is also good, there is an advantage that can be widely used throughout the industry.

Secondly, the present invention has an advantage that the type of work in the ground of the pipe and the discharge operation of the grouting material can be efficiently performed by installing the spacer member and the one-way valve in the pipe body.

Claims (3)

A circular pipe-shaped pipe manufactured by drawing molding, in which a stitch mat made of fiberglass and a roving impregnated with a compound made of resin and a mixed material are alternately stacked and wrapped, and a continuous strand mat is formed on the outermost surface. Is wrapped, and the stitch mat, roving and continuous strand mat are integrated through the compound to form a single pulled pipe body, and the outer circumferential surface of the body is formed of a concave-convex surface by heating. A predetermined portion of the body is formed with a plurality of through-holes for discharging the injection material, the through-hole is provided with a one-way open-type valve, a predetermined portion of the body for preventing the blockage of the valve during pipe type work Grouting draw molding, characterized in that the spacer is installed at predetermined intervals In the pipe, The pull-out pipe is made of tempered glass, flex trend roving 110 and multilayer continuous strand mat 120, single-layer continuous strand mat 130 is passed through the knot 200 and the mandrel 300 polymer urethane The resin and the admixture are injected into the injection box 400 from the mixer, and then integrated in the drawing mold 500 connected to the injection box 400 by rapid heating and rapid cooling to form one urethane pultruded pipe body. The outer circumferential surface of the body is formed with a concave-convex surface, a predetermined portion of the pipe body is formed with a plurality of through-holes 140 for discharging the injection material, the one-way valve 150 is installed in the through-holes 140 And, a predetermined portion of the body can be a polymer urethane, characterized in that a plurality of spacers 160 are installed at predetermined intervals to prevent the blockage of the valve 150 during pipe type work High strength urethane pultruded pipe for ground reinforcement and grouting using paper. Weaving the stitch mat in such a manner that the first and second glass fibers are inclined at 45 ° to both sides with respect to the central vertical axis and orthogonal to each other, and the third glass fibers are perpendicularly crossed at the orthogonal points thereof; The woven stitch mat is installed on a mandrel for manufacturing a pultruded pipe, and a roving impregnated with a compound of resin and admixture is first adhered to the outer circumferential surface of the stitch mat through a first forming guide installed on the mandrel. Making a step; Roving the stitching layer of the second layer on the outer circumferential surface of the first roving layer, and a compound impregnated roving made of a resin and admixture through a second forming guide provided on the mandrel in front of the first forming guide. Second bonding to an outer circumferential surface of the second stitch mat layer; Wrapping the continuous strand mat on an outer circumferential surface of the second roving layer, and then applying heat of a predetermined temperature range in a heating die to impregnate a compound made of a resin and a admixture into the entire stitch mat, roving and continuous strand mat; Cooling the pipe structure through the heating die and cutting it to a predetermined length, while forming a plurality of through holes of a predetermined size at a predetermined interval in the cut pipe structure and a plurality of through holes in one direction In the manufacturing method of the grouting drawn pipe for forming the opening and closing valves on the other hand while the plurality of spacers on the outer peripheral surface of the pipe structure at a predetermined interval to complete the production of the drawn pipe, The drawing pipe manufacturing is made of reinforced glass fiber, flex trend roving 110 and multilayer continuous strand mat 120, single layer continuous strand mat 130 through the knot plate 200 and the mandrel 300 to ultra-high molecular It is moved to an injection box 400 made of polyethylene plastic, and a polymer urethane resin and a admixture are injected in the injection box 400, and then integrated in the drawing mold 500 by rapid heating and rapid cooling to form a high-strength urethane uneven type To form a pull-out pipe body, the outer peripheral surface of the body to form an uneven surface, a predetermined portion of the pipe body to form a plurality of through holes for the discharge of the injection material, the through hole 140 in one direction The opening and closing valve 150 is installed, and a plurality of spacers 160 are provided at predetermined portions of the body to prevent the valve 150 from being blocked during pipe type work. Method for producing high-strength urethane pultruded pipe for ground reinforcement and grouting using a polymer urethane resin, characterized in that formed by forming. The method of claim 2, The drawing mold 500 is a high-strength urethane pultruded pipe manufacturing method for ground reinforcement and grouting using a polymer urethane resin, characterized in that consisting of a rapid heating and rapid cooling.

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