JP2002321245A - Method for manufacturing curved panel with ribs - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a curved panel with ribs to which an inner surface resin coated member and concrete are easily fastened. SOLUTION: Ribs are integrally molded on a flat plate-shaped member in a vertical direction and, subsequently, this flat plate-shaped member is wound around a curving fixture or the like to be held to a cylindrical shape and, thereafter, the holding of the cylindrical shape is released to obtain the curved inner surface resin coated member. By making the ribs vertical with respect to the curved inner surface resin, the fastening of concrete to the curved inner surface resin can be improved and the curved inner surface resin different in width or length can be inexpensively obtained by one curved fixture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection reaction molding material mainly composed of a norbornene-based monomer and a metathesis catalyst, which is injected into a mold to form a curved rib having a large number of parallel ribs at predetermined intervals. The present invention relates to a method for manufacturing a panel with a cover. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved ribbed panel for covering concrete in order to improve the waterproofness or chemical resistance of the curved concrete product.

In particular, the present invention relates to a resin member for covering an inner surface or an outer surface of a curved concrete structure requiring watertightness and corrosion resistance, and relates to a curved ribbed panel in consideration of adhesion to concrete.

[0003]

2. Description of the Related Art Conventionally, in order to improve the water resistance or corrosion resistance of a curved concrete structure, a resin member is coated inside. However, concrete has poor adhesion to a resin member, and the resin peels off due to aging. Therefore, in order to improve the adhesion between the concrete and the inner resin-coated member, a rib is provided on the concrete side of the inner resin-coated member.

[0004]

In order to integrally form the ribs provided on the curved inner resin coating member, it is necessary to pull out the mold in a certain direction, and the concrete bites into the inner resin coating member. It was difficult to make such a shape. Therefore, various attempts have been made to improve the bite between the concrete and the inner resin coating member.

[0005] Curved concrete structures are of various sizes depending on the purpose. The inner resin-coated member is formed by a molding die so as to match the size of the curved building. That is, it is necessary to prepare the molding dies in a number determined by the size, purpose, construction method and the like of the curved concrete structure, and this is one of the reasons why an inexpensive curved concrete structure cannot be obtained.

[0006] In addition, many of the inner surface resin coating members have large shapes, and some have an anchor pin or an anchor rib for improving the adhesion to concrete, but it takes time and effort to provide these. , Was also the cause of expensive.

Further, steam curing, in which steam is added when curing concrete, has caused separation between the concrete and the inner resin-coated member due to a difference in expansion coefficient between the two.

In order to solve the above problems, the present invention provides a method of forming a rib integrally with a flat member in a vertical direction.
By wrapping around a cylindrical jig or the like and holding it in a circular shape, and then releasing the circular shape, a ribbed panel with a desired curvature can be obtained. It is another object of the present invention to provide a method for manufacturing a curved panel with ribs, in which the ribs are perpendicular to the curved resin-coated member, thereby improving the bite with concrete.

The present invention provides a method for manufacturing a curved ribbed panel which can be easily manufactured with a small number of dies in manufacturing an inner resin-coated member for coating the inner surface of a curved concrete structure. The purpose is to:

Further, the present invention minimizes the work of cutting a rib provided on an inner resin coating member for coating an inner surface of a curved concrete structure into an inversely tapered groove, thereby producing an inexpensive curved ribbed panel. The aim is to provide a method.

[0011]

(First invention) A method of manufacturing a curved panel with a rib according to the first invention is characterized in that an injection reaction molding material mainly composed of a norbornene-based monomer and a metathesis catalyst is injected into a mold. Injection reaction molding of a flat panel having a large number of parallel ribs at desired intervals, and after opening and removing the mold, the panel is fixed to a bending jig that bends the panel in a direction perpendicular to the direction of the parallel ribs. And at least a step of performing

(Second Invention) In the method for manufacturing a panel with curved ribs according to the second invention, the bending jig is a bending jig smaller than a predetermined curvature, and the fixing is released to obtain a panel having a predetermined curvature. It is characterized by having a process.

(Third Invention) In the method of manufacturing a curved ribbed panel according to the third invention, the time required for shifting to the bending jig is within 15 minutes after the mold is opened, preferably 0.5 to 1 minute.
It is characterized by being 0 minutes.

(Fourth Invention) In the method for manufacturing a curved ribbed panel according to the fourth invention, the time required for the step of fixing to the bending jig is 20 minutes to 60 minutes.

(Fifth invention) In the method for manufacturing a panel with curved ribs according to the fifth invention, the bending jig is constituted by a number of rod-like members fixed to a base.

(Sixth invention) In the method for manufacturing a panel with curved ribs according to the sixth invention, the means for fixing to the bending jig is a clamp and / or a rubber band.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION (First Invention) A method for manufacturing a panel with curved ribs according to the first invention is characterized in that a norbornene-based monomer is formed in a mold in which one is flat and the other is formed with a number of parallel ribs at desired intervals. And an injection reaction molding material mainly composed of a metathesis catalyst. The injection reaction molding material containing the norbornene-based monomer and the metathesis catalyst as main components has rigidity,
Excellent impact resistance and elasticity, low viscosity, low water absorption,
Since it has heat resistance and thermosetting properties, injection reaction molding can be performed at low temperature and low pressure.

The injection-reaction molding material containing the norbornene-based monomer and the metathesis catalyst as main components has strength and low water absorption, and thus is suitable as an inner resin coating member of a curved concrete structure. In addition, since the curved inner resin coating member can be subjected to injection reaction molding at a low temperature and a low pressure, the curved resin member can be molded with a resin mold.

The injection reaction molding material containing the norbornene-based monomer and the metathesis catalyst as the main components injected into the mold is as follows:
A plate-like member having vertical ribs at regular intervals is formed by the mold. The plate-shaped member having the vertical ribs is wound around the bending jig in a state of being formed and heated, and then the periphery thereof is fixed. The plate-like member having the vertical ribs is bent over time to be a curved inner resin coating member.

Next, the plate-like member taken out of the mold has a flat plate-like shape provided with ribs at right angles to the plate-like member. At right angles to the curved surface, it is difficult to peel off from the curved concrete member. Since the flat member is wound around the periphery of the bending jig, many types of curved inner resin coating members can be manufactured with one bending jig.

(Second Invention) The bending jig of the second invention has a smaller curvature than required in advance. Then, after the flat member is fixed along the periphery of the bending jig, when the fixing is released, a ribbed panel having a predetermined curvature is obtained. The bending jig and the curved inner resin coating member do not need to have a desired curvature accurately. because,
An inner resin-coated member having a curvature close to a desired value is put into a curved concrete structure mold, and then the concrete member is cast. An inner resin-coated member having a predetermined curvature is obtained by the weight of the concrete member at the time of the casting.

(Third invention) In the method for manufacturing a curved ribbed panel according to the third invention, it is preferable that the flat plate member removed from the mold is wound around the curved jig while being heated. . The time required for the flat plate member to move to the bending jig was within 15 minutes after opening the mold, and preferably 0.5 to 10 minutes. When a lot of time has passed since the mold was opened, the flat member is wound around the bending jig while applying heat from the outside.

(Fourth Invention) In the method for manufacturing a curved ribbed panel according to the fourth invention, the time during which the flat member removed from the mold is fixed to the bending jig is from 20 minutes to 60 minutes.
Minutes. The fixed time may vary depending on the application of water to facilitate cooling or the size. In the third invention and the fourth invention, the time is different by surrounding the periphery of the bending jig with hot steam, cooling water or the like, or changing the temperature by other means.

(Fifth invention) The fifth invention relates to a bending jig for winding the flat member. In the bending jig, for example, bar-shaped members (poles) are arranged and fixed on a base at predetermined intervals so as to obtain a predetermined curvature. The fixing may be made detachable so that welding or the position of the rod-shaped member can be changed. As the bending jig, in addition to the rod-shaped member, a plate or a punched material or the like formed into a cylinder may be used.

(Sixth invention) A sixth invention is a means for winding a flat member around a bending jig and then fixing it. The fixing means is a clamp and / or a rubber band. The number of the clamps, rubber bands, and the like can be arbitrarily changed depending on the size of the inner surface resin covering member.

[0026]

FIG. 1 is a view for explaining a flat plate member before an inner resin coating member is manufactured, according to one embodiment of the present invention. FIG. 2 is a view for explaining a state of manufacturing a curved inner resin-coated segment by winding a flat member around a cylindrical jig in one embodiment of the present invention. FIG. 3 is a view for explaining a means for tightening after winding a flat member around a cylindrical jig in one embodiment of the present invention. In FIG. 1, an inner resin coating member 111 is a flat member 113.
And a rib 112 integrally formed vertically with the plate-shaped member 113.

In FIG. 1, the size of the inner resin covering member 111 is, for example, 1400 mm in length and 1000 m in width.
m and thickness 4 mm. The height of the ribs 112 was 5 mm, and the interval between the ribs 112 was 26 mm.

In FIG. 2, the pole fixing base 121 is made of, for example, a strong metal member, and has a fixing pole 122 welded or detachably attached to obtain a predetermined curvature. The cylindrical jig 120 includes the pole fixing base 121 and a plurality of fixing poles 122. The cylindrical jig 120 may be a cylindrical member made of a plate member having a predetermined strength instead of the fixed pole 122. Further, the fixed pole 122 is detachable from the pole fixed base 121, and its position can be moved to change the curvature.

After a flat member 113 having a rib 112 formed as shown in FIG. 1 is wound around the cylindrical jig 120, it is fixed for a predetermined time by a clamp 131 shown in FIG. The clamp 131 is formed of, for example, one or two clamps, and is fixed by fixing bolts 133, 133 'after the engaging portions 132, 132' are aligned with each other. Further, it can be fastened by a flexible band or the like (not shown). A plurality of the clamps 131 and the flexible bands can be appropriately used. Further, the fixing means is not limited to the clamp 131 or the flexible band.

When the inner resin-coated member has the above dimensions, FIG.
As shown in FIG. 2, the cylindrical jig 120 is surrounded by about 3/4 circumference. It is convenient for the cylindrical jig 120 to have the largest width and the largest radius of the fixed pole 122 among the necessary inner resin coating members. Such a cylindrical jig 120 can produce an inner resin coating member for a concrete structure suitable for various purposes. That is, only one jig or mold suitable for the concrete structure is required.

FIG. 4 is a view for explaining an inner resin coating member according to another embodiment of the present invention. In FIG. 4, a flat member 141 having a rib 142 is attached to a cylindrical jig 120.
It is wound. The inner-surface resin-coated member manufactured from the plate-like member 141 in this manner is different from that of FIG.
The width is the same and the length is shorter. As described above, the cylindrical jig 120 can easily produce inner surface resin-coated members having different widths and lengths as necessary.

FIG. 5 is an explanatory view of an embodiment of the present invention for making the inner resin coating member have a desired curvature. In FIG. 5, as shown in FIG. 2 and FIG.
3, 141 are wound around the cylindrical jig 120 while being molded and heated. The flat member 1
It is desirable that 13 and 141 be taken out of a mold (not shown) within 15 minutes, preferably about 0.5 to 10 minutes.

The cylindrical jig 120 is made larger than a desired curvature as an inner resin coating member. For this reason, in order to obtain an inner resin-coated member having a desired curvature, it is necessary to leave it for a predetermined time. The time to leave the cylindrical jig 120 wound around it is 20 minutes.
Minutes to 60 minutes. The flat member 11
3 and 141 are removed from the mold, and the cylindrical jig 120 is removed.
The time required to wind it around the cylindrical jig 120
The time to keep the wrap around depends on the application of external heat or cooling. When the heating or cooling is performed, the heating or cooling is performed in a room or the like together with the cylindrical jig 120.

4 and 5, the flat plate member 14
Within 15 minutes after molding 1, a 300R cylindrical jig 12
0 and fixed at 8 ° C. for 30 minutes up and down by a clamp and / or a rubber band. The view shown in FIG. 5 was immediately after the straightening was released, and the height from below the end was 200 mm (1220R).

In the embodiment of the present invention, since the plate-shaped member is curved, the rib is formed perpendicular to the plate-shaped member, and each of the ribs has a different angle with respect to the horizontal plane. Therefore, the poured concrete has a good bite against the ribs in the different directions, prevents the concrete from being separated from the curved plate-shaped member, and obtains a highly reliable inner resin coating member.

FIG. 6 is a view for explaining a flat plate having a number of parallel ribs provided on a resin member covering concrete. FIG. 7 is a view in which the ribs are provided with tapered grooves that expand inward in a state where the direction in FIG. 6 is changed by 90 degrees. FIG. 8 is a perspective view of FIG. 6 and FIG.

In FIG. 6 to FIG. 8, the inner resin coating member 11 covering the inner surface of the concrete structure has a rib 13 projecting toward the concrete side and continuously projecting along the axial direction on the entire surface. Concrete (not shown) is filled while applying vibration along the axial direction from the top of the formwork (not shown)
The axial ribs 13 do not hinder the filling of concrete.

For example, the inner resin coating member 11 has a thickness of 4 mm, the axial rib 13 has a height of 5 mm, and a thickness of 4 mm.
When the distance between the axial ribs 13 was 36 mm, an adhesion strength test between the inner resin coating member 11 and concrete was performed. The tensile speed was about 50 mm / min, and as a result, the concrete material was broken at 7 kgf / cm ² .

Internal resin-coated member 1 shown in FIGS. 6 to 8
In 1, ribs 13 are provided on the entire surface at substantially equal intervals in the axial direction. However, the axial rib 13 is provided with at least one reverse tapered groove 14-1 intermittently.
The axial rib 13 has a large number of reverse tapered grooves 14 intermittently provided near the periphery of the flat plate. The intermittent inverted tapered groove 14 keeps the inner resin coating member 11 and the concrete in close contact with each other so as not to be separated from each other.

For example, FIGS. 6 to 8 illustrate the above-mentioned inverted tapered grooves 14-1 to 14-3. For example, the reverse tapered groove 14-1 is provided at a position 10 mm from the upper end in FIG. 7, and the next reverse tapered groove 14-2 is provided at a position 36 mm away.

Reverse tapered grooves 14-1 and 14-2
As shown in FIG. 7, is cut in a reverse taper shape at an angle of, for example, 60 degrees. The inverted tapered groove 14 has such a shape that when the concrete is poured, the adhesiveness between the concrete and the inner resin coating member 11 is improved and the concrete is not peeled off even with aging.

FIG. 9 is a conceptual diagram for explaining a method of manufacturing the tapered grooves in FIGS. 7 and 8. In FIG. 9, the machine tool for cutting the reverse tapered groove 14 is N
C router was used. The machine tool includes a machine tool main body 31, an arm 32 supporting a movable portion,
An XY drive unit 33 attached to the second unit 2 and capable of changing the position to a desired shape, and a hydraulic pressure for adjusting the height direction so as to cut along the inner surface resin coating member 11 curved in the circumferential direction. A rotation drive unit 35 for rotating a reverse taper cutter 38, a power lead 36 for supplying electric power for rotating the rotation drive unit 35, a rotation shaft 37 which is an output shaft of the rotation drive unit 35, And a reverse taper cutter 38 attached to the rotating shaft 37.

The reverse taper cutter 38 cuts the axial rib 13 into a reverse taper shape while rotating by the rotation of the rotation drive unit 35 and following the height direction by the hydraulic unit 34. In addition, the XY drive unit 33 is controlled by the NC, and can carry the reverse taper cutter 38 to a desired position, so that the reverse tapered groove 14 is formed in a desired shape. The start of the cutting starts at the place without the axial rib 13 and ends at the place without the axial rib 13 as well.

Further, in the embodiment of the present invention, the reverse tapered groove 14 is cut in a reverse taper shape at an angle of, for example, 60 degrees in a direction perpendicular to the axial rib. The inverted tapered groove 14 has such a shape that when the concrete is poured, the adhesiveness between the concrete and the inner resin coating member 11 is improved and the concrete is not peeled off even with aging.

The cutting angle was 60 degrees because an off-the-shelf cutter was used, but is not limited to this angle. However, cutting at an angle of approximately 60 degrees is preferable for cutting work or biting with concrete.
The reverse tapered groove 14 can be cut linearly or circularly. The reverse tapered groove 1
By cutting into a substantially circular shape, No. 4 can make the adhesion to concrete in this region more strong.

Inner resin coating member 11 and axial rib 1
No. 3 is manufactured by, for example, injecting an injection reaction molding material mainly containing a norbornene-based monomer and a metathesis catalyst into a mold, into an injection reaction molding apparatus (not shown). The injection reaction molding material is, for example, a first liquid composed of a norbornene monomer and a metathesis catalyst, and a second liquid composed of a norbornene monomer and an activator.
Liquid is prepared.

Thereafter, the two stable liquids are, for example,
After being mixed by the mixing head, it is injected at low pressure and low temperature into the mold of the injection reaction molding apparatus. In this embodiment,
As mentioned above, injection reaction molding can be performed at low pressure and low temperature,
The formwork may be the same as the outer formwork for concrete.

For details of the injection reaction molding material, see, for example, Japanese Patent Publication No. 3-28451 and Japanese Patent Publication No. 4-9812.
Japanese Patent Publication No. 6-13563, Japanese Patent Publication No. 6-24
806 and JP-A-6-8273, and the resin-coated segment of this embodiment can be manufactured using these materials.

For example, a hardening adhesive (not shown) that can be adhered in water or in a wet state is applied to the surface of the inner resin coating member 11 if necessary. Then, concrete is poured while the curable adhesive is in an uncured or semi-cured state. The curable adhesive is hardened by the reaction heat of the concrete, and the concrete is also tightly adhered and solidified. In this way,
After the concrete is solidified, the manufactured inner surface resin-coated member is taken out of the formwork integrally. The curable adhesive that can be adhered in water or in a wet state can be applied over the entire surface or a part of the inner resin coating member 11.

As the curable adhesive which can be adhered in water or in a wet state, a urethane-acrylate resin is optimal. In addition, the inner resin coating member 11 is formed of at least one of an injection reaction molded product mainly composed of a norbornene-based monomer and a metathesis catalyst, a fiber-reinforced plastic molded product made of a sheet molding compound, and a molded product of a thermoplastic resin sheet. used.

Next, after the inner resin coating member 11 is placed on a concrete structure molding base (not shown), the concrete molding side mold and the concrete molding upper mold are placed at predetermined positions. Be placed. Concrete is injected from the concrete injection hole of the upper mold for concrete molding.

In the concrete structure forming base, concrete is cast along the ribs 13 provided in the axial direction by, for example, vibration. The inner resin coating member 11 is filled with concrete after a reinforcing bar or a connection fitting is inserted thereinto. When filling the concrete, the inner resin coating member 11 is placed on a shaking table and vibrated, and is internally compacted with a rod-shaped vibrator or the like.

After curing of the concrete, the upper mold for concrete molding and the side mold for concrete molding are peeled and removed to complete a concrete structure coated with resin on the inner surface. The side mold for concrete molding is provided with a projection for forming a joint recess and a projection for a seal groove.

Although the present embodiment has been described in detail, the present invention is not limited to this embodiment. Various design changes can be made without departing from the present invention described in the appended claims. In the present embodiment, the ribbed panel which is curved by the inner resin-coated member is described. However, the outer resin-coated member may be used, or a concrete structure may be used as the tunnel segment.

The ribs may be provided in a grid pattern, or may be formed alternately or alternately at different heights. Further, since the rib is formed on a flat plate-shaped member, it is convenient when the resin member is removed from the mold, and can have a complicated shape other than that shown in the embodiment.

In this embodiment, if the ribs are perpendicular to the flat plate member and the directions of the ribs are different when the flat plate member is curved, the shape of the rib can be arbitrarily changed. it can. Although the inner resin coating member of the present embodiment has been described as having a rectangular shape, it may be trapezoidal, hexagonal, tortoiseshell, square, or any other deformable member.

[0057]

According to the present invention, a plate-like member provided with ribs in the axial direction is integrally formed, and then wound around a cylindrical jig in a heated state to form curved members having different widths and lengths. Since the inner resin-coated member is manufactured, an inexpensive inner resin-coated concrete structure can be obtained.

According to the present invention, the plate member having a vertically provided rib is wound around a cylindrical jig to produce a curved inner resin coating member. Each became different, and the bite with concrete was improved.

According to the present invention, the ribs provided in the direction perpendicular to the flat plate member are provided with intermittent inverted tapered grooves to further improve the bite between the concrete and the inner resin coating member. We were able to.

According to the present invention, it is possible to omit the secondary lining provided inside the concrete structure by the inner resin coating member, and it has good chemical resistance and a smooth surface, so that rainwater or sewage And a concrete structure for rainwater or sewerage having excellent hydraulic characteristics, such as an increase in the flow rate of water.

[Brief description of the drawings]

FIG. 1 is a view for explaining a flat member before an inner resin-coated member is manufactured in one embodiment of the present invention.

FIG. 2 is a view for explaining a state in which a flat member is wound around a cylindrical jig to produce a curved inner resin-coated segment in one embodiment of the present invention.

FIG. 3 is a view for explaining means for winding a flat member around a cylindrical jig and then tightening the member in an embodiment of the present invention.

FIG. 4 is a view for explaining an inner resin coating member according to another embodiment of the present invention.

FIG. 5 is an explanatory view for making the inner resin coating member have a desired curve in one embodiment of the present invention.

FIG. 6 is a view for explaining a flat plate having a number of parallel ribs provided on a resin member covering concrete.

FIG. 7 is a diagram in which a rib is provided with a tapered groove that expands inward in a state where the direction in FIG. 6 is changed by 90 degrees.

FIG. 8 is a perspective view of FIGS. 6 and 7;

FIG. 9 is a conceptual diagram for explaining a method of manufacturing the tapered grooves in FIGS. 7 and 8.

[Explanation of symbols]

 111 ... inner surface resin coating member 112, 142 ... rib, reverse tapered groove 113, 141 ... plate member 120 ... cylindrical jig 121 ... pole fixing base 122 ... fixed pole 131, 131 '... clamp 132, 132' ... engaging portion 133, 133 '... fixing bolt

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuichi Masuda 1-18-1 Kyobashi, Chuo-ku, Tokyo F-term (reference) 4F206 AA20 AG28 AH42 JA01 JQ81

Claims (6)

[Claims] 1. A step of injecting an injection reaction molding material mainly composed of a norbornene-based monomer and a metathesis catalyst into a mold, and injection-molding a flat panel having a large number of parallel ribs at desired intervals. And fixing the panel to a bending jig that bends the panel in a direction perpendicular to the direction of the parallel ribs after the mold is opened and taken out. 2. The method according to claim 1, wherein the bending jig is a bending jig smaller than a predetermined curvature, and has a step of releasing the fixing to obtain a panel having a predetermined curvature. A method for manufacturing a panel with curved ribs. 3. The method as claimed in claim 1, wherein the time required for shifting to the bending jig is within 15 minutes after opening the mold, and preferably 0.5 to 10 minutes. Panel manufacturing method. 4. The method according to claim 1, wherein the time required for the step of fixing to the bending jig is 20 minutes to 60 minutes. 5. The bending jig according to claim 1, wherein the bending jig comprises a plurality of rod-shaped members fixed to a base.
A method for manufacturing a curved ribbed panel according to claim 2. 6. The method according to claim 1, wherein said means for fixing to said bending jig is a clamp and / or a rubber band.