JP4516167B2 - Fiber reinforced resin composite split pipe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fiber-reinforced resin composite split pipe in which a plurality of pipes are formed along an axial direction by a partition wall.
[0002]
[Prior art]
Conventionally, fiber reinforced resin composite pipes have been used as sewer pipes, but usually when sewage flows by natural flow in the sewer pipes, it is necessary to cross rivers or bypass structures. In some cases, it is possible to make a detour by passing under a river or structure and providing a difference in the height of the pipeline. Especially in the case of crossing a river, as shown in FIG. 5, it is necessary to form a pipe p by passing under a river bed a and a dike b, so that a portion that is lowered over a long distance occurs. Since the sludge in the sewage easily accumulates in that portion, it was necessary to periodically remove the sludge.
In addition to the above, the sewage pipes are prone to many troubles and need to be shut off for restoration work.
[0003]
However, since it is necessary to cut off the sewage when only a single pipeline is laid, recently two series of sewage pipelines have been laid in advance, and one of the pipelines is connected during the work. The method of using and shutting off the other pipe line and performing the restoration work has come to be taken.
[0004]
However, when two sewage pipes are laid in parallel, for example, a method of laying the whole fume pipe after being placed in a large-diameter fume pipe, etc., takes cost and construction time. There is.
[0005]
[Problems to be solved by the invention]
The present invention provides a fiber-reinforced resin composite split pipe that eliminates the above-mentioned conventional problems and has two or more series of pipelines, and can keep costs and construction time low in construction. It was made as a purpose.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention (invention 1), a partition material is disposed along the axial direction inside a fiber reinforced resin composite tube, and the composite tube is provided from at least peripheral edges of both surfaces of the partition material. A fiber-reinforced resin composite split pipe in which a thermosetting resin-impregnated fiber sheet is pasted on the inner surface of the fiber and is integrally cured to form a partition, and a plurality of pipes are formed along the axial direction by the partition It is.
[0007]
The invention according to claim 2 of the present application (present invention 2) is the fiber reinforced resin composite split pipe of the present invention 1 in which the partition wall is made of a fiber reinforced foamed resin.
[0008]
In the present invention, the fiber reinforced resin composite pipe is, for example, an inner layer made of a resin mortar around a core mold that rotates in the circumferential direction of a steel belt wound spirally and advances in the axial direction. Examples include fiber reinforced resin mortar composite pipes that are formed by laminating molding material layers as inner and outer layers made of fiber reinforced resin on the outer surface, then heat-curing them and then demolding, but only fiber reinforced resin A composite tube made of may be used.
[0009]
As the resin in the resin mortar or the fiber reinforced resin, for example, a thermosetting resin such as an unsaturated polyester resin, an epoxy resin, or a vinyl ester resin is used.
As the filler in the resin mortar, for example, an inorganic material such as sand, calcium carbonate, or clay, an inorganic or organic hollow body, and a glass fiber or a chemical fiber or the like having a short shape as necessary are used. .
As the reinforcing fiber in the fiber reinforced resin, for example, roving made of glass fiber, carbon fiber, natural fiber or the like, other belt-like body, or the like is used.
[0010]
In the present invention, as the partition material, for example, a thermoplastic resin plate, a fiber reinforced resin plate, and the like, which are durable, are used, such as corrosion resistance, durability, lightweight workability, economy, etc. From the viewpoint, those made of a fiber reinforced foamed resin are preferably used, and those made of a long glass fiber reinforced polyurethane foam used as a synthetic wood are particularly preferably used.
[0011]
In the present invention, as the resin for forming the thermosetting resin-impregnated fiber sheet, the same thermosetting resin as described above is used. As the fiber sheet, a cloth or a mat made of glass fiber, carbon fiber, natural fiber, or the like is used. Is used.
[0012]
[Action]
In the fiber reinforced resin composite split pipe of the first aspect of the invention, partition materials are disposed along the axial direction inside the fiber reinforced resin composite tube, and heat is applied from at least the peripheral edges of both surfaces of the partition material to the inner surface of the composite tube. After the curable resin-impregnated fiber sheet is stuck, it is integrally cured to form a partition, and a plurality of pipelines are formed along the axial direction by the partition. While having it, it can be manufactured easily, and the cost and construction time can be kept low in construction.
[0013]
The fiber reinforced resin composite split pipe of the present invention 2 is excellent in corrosion resistance, durability, lightweight workability, economy and the like because the partition wall is made of fiber reinforced foamed resin.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an example of a fiber-reinforced resin composite split pipe of the present invention.
As shown in FIG. 1, the fiber reinforced resin composite split pipe of this example is provided with a partition wall 12 along the axial direction inside a fiber reinforced resin mortar composite pipe 11, and the partition 12 provides two series of pipes A, B is formed.
[0015]
The partition wall 12 is formed by the following method.
First, as shown in FIG. 2, a height-adjustable base D is placed inside the composite pipe 11 along the axial direction, and the base D is made of a glass long fiber reinforced polyurethane foam having a certain length. The plurality of partition members 121 are arranged in series in the horizontal state along the axial direction. At this time, a gap of about 2 mm may be provided between the partition walls 121. By adjusting the height of the table D, the partition material 121 is finely adjusted so as to be in the center of the composite pipe 11.
[0016]
Next, a thermosetting resin is applied by applying a thermosetting resin over the entire surface of one surface of the partition wall material 121 to the inner surface of the composite tube 11 and impregnating the resin while a glass fiber mat is attached thereon. The impregnated fiber sheet 122 is hand-up and then cured integrally.
[0017]
Further, as shown in FIG. 3, the thermosetting resin is applied over the entire other surface of the partition wall 121 from the entire other surface of the partition wall 121, and a glass fiber mat is pasted thereon. Then, the thermosetting resin-impregnated fiber sheet 122 is hand-up by a method of impregnating the resin and then integrally cured.
[0018]
As a result, as shown in FIG. 4, the thermosetting resin-impregnated fiber sheets 122 and 122 are stuck to the partition wall 12 from the entire surface of both surfaces of the plurality of partition materials 121 to the inner surface of the composite tube 11. Is formed.
[0019]
In addition, when the partition material is one piece, you may make it form a partition by carrying out integral hardening after handling a thermosetting resin fiber sheet from the periphery of a partition material to the inner surface of a composite pipe | tube.
[0020]
【The invention's effect】
The fiber reinforced resin composite split pipe of the present invention can reduce costs and construction time in construction while having two or more series of pipes by adopting the above-described configuration.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a fiber-reinforced resin composite split pipe of the present invention.
FIG. 2 is a front view for explaining the first half of the process of forming the partition wall of the fiber reinforced resin composite split pipe shown in FIG. 1;
FIG. 3 is a front view for explaining a latter half of the process of forming the partition wall of the fiber reinforced resin composite split pipe shown in FIG. 1;
4 is a cross-sectional view of the fiber-reinforced resin composite split pipe shown in FIG. 1. FIG.
FIG. 5 is a schematic diagram for explaining a pipeline when traversing a river.
[Explanation of symbols]
11 Fiber reinforced resin mortar composite pipe 12 Partition wall 121 Partition material 122 Thermosetting resin impregnated fiber sheet A, B Pipe line

Claims (2)

Inside the fiber reinforced resin composite pipe, a partition material is disposed along the axial direction, and a thermosetting resin-impregnated fiber sheet is pasted from at least the periphery of both sides of the partition material to the inner surface of the composite pipe. After that, a fiber-reinforced resin composite split pipe, in which a partition wall is formed by being integrally cured, and a plurality of pipelines are formed along the axial direction by the partition wall. 2. The fiber reinforced resin composite split pipe according to claim 1, wherein the partition material is made of a fiber reinforced foamed resin.

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