JPH0913664A - Rib-made resin concrete pouring formwork - Google Patents

Abstract

(57) [Summary] [Structure] The entire circumference of the weir 1, and the length and / or length of the weir 1.
Alternatively, a plurality of reinforcing plate-shaped ribs 2, 3, ..., 4 ... Is provided parallel to the lateral sides and connecting both ends. Plate rib 2
・ Separate rails 5 ・ 5 lower than 3 ・ ・ 4 ...
A set of books is arranged in a rail shape parallel to the longitudinal direction of the weir plate 1. [Effect] Since the separate rails 5 are formed integrally with the mold, the separator can be easily passed through without being restricted by the mounting position of the separator, and the workability becomes extremely good.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin concrete with ribs provided with a plurality of reinforcing plate-like ribs which are parallel to the entire circumference of the weir board and the longitudinal and / or horizontal sides of the weir board and connecting both ends. It relates to a casting formwork.

[0002]

2. Description of the Related Art A concrete pouring formwork is used for concrete pouring in civil engineering and construction sites. Various materials such as wood and metal are known as materials for the concrete pouring formwork. As the above wooden formwork is used repeatedly, its surface condition deteriorates so that it can only be used several times, and there is a strong demand for replacement of wooden products due to global environmental problems in recent years. Further, there is a problem that the metal mold is rusted and thus is not easily stored, and that it is heavy and thus is not easily handled.

In order to solve such a problem, a resin-made concrete casting form has been developed and put into practical use in recent years and is widely used.

A conventional resin concrete pouring formwork is disclosed in, for example, Japanese Patent Laid-Open No. 6-129094. This type of resin concrete pouring formwork, as shown in FIGS. 9 (a) and 9 (b), usually corresponds to plywood of a wooden concrete pouring formwork (hereinafter referred to as "plywood formwork"). A flat plate portion called a weir board 51, a plurality of plate-shaped ribs 52, 53 that are parallel to the entire outer circumference of the weir board 51 and the longitudinal and / or horizontal sides of the weir board 51 and connect both ends ...
.....

The ribbed resin concrete pouring formwork 50 is lightweight and can withstand a large number of diversions, and the plate-shaped ribs 52, 53, ..., 54 are of a wooden concrete pouring formwork. Since it corresponds to a pier, it does not need to be struck at the construction site and is very efficient, and has many features not found in wooden or metal concrete casting formwork.

However, such a ribbed resin concrete pouring formwork 50 requires a washer to be installed when a separator for a composite formwork is attached at the time of construction because a washer 51 is thin. There are problems that the frame tightening bolts cannot be tightened and that the plate-shaped ribs 53 ... 54.

In order to solve this problem, for example, in the resin concrete pouring form 60 with ribs of Japanese Patent Application No. 5-7298 and No. 5-7299, FIGS.
As shown in FIGS. 1 (a) and 1 (b), a structure is proposed in which tubular separator guides (hereinafter referred to as “separator guides”) 64 having a washer portion are provided on the plate-shaped ribs 61, 62, 63. Has been done. The separation guide 64 is composed of a washer portion 64a corresponding to the thickness of the plywood and a pipe-shaped guide 64b for eliminating interference between the plate-shaped ribs. This solves the above problems.

[0008]

However, in the above-mentioned conventional resin-made concrete casting form with ribs, the mounting position of the separator is limited, and the outer periphery of the pipe-shaped guide 64b of the separation guide 64 becomes an obstacle. However, there is a problem that the separator cannot be efficiently passed through the holes.

[0009]

In view of the above, the present inventors have solved the above-mentioned problems and have ribs for allowing the separator to pass through easily without being restricted by the mounting position of the separator. As a result of studying to develop a resin-made concrete casting formwork, the present invention has been achieved.

That is, in order to solve the above-mentioned problems, the ribbed resin concrete casting formwork of the invention according to claim 1 is provided on the entire circumference of the weir plate and on the vertical and / or horizontal sides of the weir plate. In a resin concrete pouring formwork with ribs provided in parallel with a plurality of reinforcing plate-like ribs connecting both ends, a pair of separator attaching ribs having a height lower than the plate-like ribs It is characterized by being arranged in a rail shape parallel to the longitudinal direction of the weir board.

In order to solve the above-mentioned problems, the ribbed resin concrete pouring formwork of the invention according to claim 2 is a rail-shaped resin concrete pouring formwork according to claim 1. It is characterized in that the two separator-attaching ribs arranged at are spaced apart from each other by a distance larger than the diameter of the separator and smaller than the diameter of the seat of the foam tie.

In order to solve the above problems, the ribbed resin concrete pouring formwork of the invention according to claim 3 is a rail-shaped resin concrete pouring formwork according to claim 1 It is characterized in that the two ribs for attaching the separator, which are arranged at 1, are provided over the entire length connecting both longitudinal ends of the weir plate.

In order to solve the above-mentioned problems, the ribbed resin concrete pouring formwork of the invention according to claim 4 is a rail-shaped resin concrete pouring formwork according to claim 1. It is characterized in that the two separator-attaching ribs arranged in the above are provided for a certain length in the longitudinal direction of the weir plate.

In order to solve the above-mentioned problems, the ribbed resin concrete pouring formwork of the invention according to claim 5 is a rail-shaped resin concrete pouring formwork according to claim 1. It is characterized in that the two separator mounting ribs arranged in 1 are provided at the center of the weir plate in the lateral direction or at the position of the quadrant.

In order to solve the above-mentioned problems, the ribbed resin concrete pouring formwork of the invention according to claim 6 is a rail-shaped resin concrete pouring formwork according to claim 1. A tubular member having the same height as the separator attaching ribs is formed between the two separator attaching ribs arranged in the above, and the inner diameter of the tubular member is larger than the diameter of the separator and the foam. It is characterized by being formed smaller than the diameter of the tie seat.

The present invention will be described in detail below.

As shown in FIGS. 1 to 3, a resin concrete pouring mold 10 as a resin concrete pouring mold with ribs to which the present invention is applied is provided on a weir board 1 as shown in FIGS. The plate-like ribs 2 on the entire outer periphery of the plate 1 and the weir plate 1
Is a resin-made concrete casting form provided with a plurality of reinforcing plate-like ribs 3 ... 4 ... Parallel to the vertical and / or horizontal sides of the above and connecting both ends.

That is, the reinforcing plate ribs other than the entire outer peripheral portion of the resin concrete casting formwork 10 are
Like the plate-like ribs 3 ..., It may be provided in parallel to the vertical side which is the longitudinal direction of the weir 1, or like the plate-like ribs 4 ... Although they may be provided in parallel with each other, they are usually provided on both of them for improving strength as shown in FIG.

When the above-mentioned plate-shaped ribs 2, 3, ..., 4 are provided, a plurality of ribs are usually provided in each direction or in both directions, but the number is arbitrary, and is appropriately selected as a mold according to the desired strength. To be elected.

Resin-made concrete casting formwork 1 of the present invention
0 is based on such a resin concrete pouring formwork with reinforcing plate-like ribs, and further includes plate-like ribs 2.3.
················································································································································· is there.

Hereinafter, the two rail-shaped arrangements will be described.
The ribs for attaching the separator of the book are called separate rails 5 and 5.

The height of the separation rails 5 and 5 is related to the thickness of the weir plate 1, but as shown in FIG. 4, when the separator 11 used during construction is attached, the foam tie 12 is tightened as necessary and sufficient. It is preferable to have a height that can be obtained.

As a result, it becomes unnecessary to prepare extra parts such as washers when attaching the separator 11. Specifically, the weir thickness 12 that is generally used
When using the separator 11 and the foam tie 12 used in the wooden plywood formwork of mm, the total thickness of the weirboard 1 and the height of the separation rails 5 and 5 is 12 mm ±.
It is preferably about 2 mm.

The distance between the rails (separator mounting ribs) of the separation rails 5 is the separator 1 used.
It is preferably larger than the diameter of 1 and smaller than the diameter of the seat 12a of the foam tie 12. If the distance between the rails is smaller than the diameter of the separator 11, the rail will be damaged when the hole 1a for the separator 11 is opened.
On the other hand, when the distance between the rails is larger than the diameter of the seat 12a of the foam tie 12, it is disadvantageous in terms of weight and economy and a washer is essential.

The width of each separator mounting rib forming the separation rails 5 may be sufficient to fix the separator 11 with the foam tie 12. Since the tightening force of the foam tie 12 is low, a width of about 1 to 5 mm is suitable. The length of the separation rails 5 is not particularly limited.

On the other hand, when the separator 11 is attached to the weir board 1 at an arbitrary position in the vertical direction, the weir board 1
It is preferable that the separation rails 5 are present over the entire length of. However, when the mounting position of the separator 11 is limited, as shown in FIG. 5, it is more efficient to mount the separation rails 15 and 15 ... and the separation rails 16 and 16 ... only on the portions corresponding to the mounting positions. Therefore, the weight can be reduced.

Separate rails 5 and 5 or separate rails 15 and
The number of attachments of 15 and the separation rails 16 and 16 is not particularly limited. However, in general, the number of lateral edges used for supporting work during construction is about 3 to 5 from the calculation of the placing pressure at the time of placing concrete, and from the number of separators 11 corresponding to this, the number of separator rails 5 is 5.・ 5 or separate rail 1
The required number of 5 · 15 and separate rails 16 · 16 is about 1 to 3 pairs in the lateral direction.

Separate rails 5, 5 or separate rails 15
The horizontal mounting positions of the 15 and the separation rails 16 and 16 are not particularly limited. However, when considering the simultaneous use of a large number of resin-made concrete casting molds 10 or resin-made concrete casting molds 20, it is preferable to average the stress applied to each separator 11.
For this reason, the separation rails 5 and 5, or the separation rails 15 and
When 15 and the separate rails 16 and 16 are a pair, 3 pairs of the separate rails 5 and 5, the separate rails 15 and 15 or the separate rails 16 and 16 are provided in the central portion in the width direction of the resin concrete casting formwork 10 and 20. In this case, a pair of separate rails 5, 5 and separate rails 15
It is preferable that the center of 15 or the separation rail 16 is present.

On the other hand, when a concrete pouring formwork is used, usually 3 to 5 slabs are used, and the attachment position of the separator 11 (distance from the upper or lower end of the formwork).
Is basically determined in correspondence with the mounting positions of these thick ends, and therefore, as shown in FIG. 6 and FIG. Correspondingly, it is preferable in use to previously provide the cylindrical bodies 8 ... As a mark between the rails of the separation rails 5. The cylindrical bodies 8 ... In FIGS. 6 and 7 exemplify the case of a cylindrical shape, but the shape is not necessarily limited to this, and a rectangular cylindrical shape or another cylindrical shape may be considered.

Further, as shown in FIG. 7, when the tubular bodies 8 ... Are cylindrical or square tubular, their height is preferably the same as the height of the separation rails 5 in terms of construction, and its size. Is preferably larger than the diameter of the separator 11 and smaller than the diameter of the seat 12a of the foam tie 12.

Further, as shown in FIG. 8, it is possible to use the separate rails 5 in combination with the separate guide 64 described in the conventional example.

Further, as shown in FIG. 1, the resin concrete pouring formwork 10 of the present invention is, in terms of shape, parallel to the entire circumference of the weir plate 1 and the vertical and / or horizontal sides of the weir plate 1. And a plurality of reinforcing plate-like ribs 2, 3 ... 4 connecting both ends
.., and a pair of separate rails 5 and 5 or more, but if necessary, side plates 14 may be provided in the lateral end of the weir plate 1 as auxiliary ribs in parallel to the lateral direction. In this case, usually, the plate-shaped ribs 4 ... Are formed on the side ends as a part of the plate-shaped ribs 4 ... In addition to the plate-shaped ribs 4 ,. May have different widths and heights, preferably equal to or lower than the plate-shaped ribs 4 ... Similarly,
Side plates 13 ... May be provided in the longitudinal direction in parallel as auxiliary ribs at the side end portions of the weir plate 1. The shape may be similar to that of the side plates 14 ...

Further, the weir plate 1 and the plate-shaped ribs 2, 3, ... 4,
... may be integrally formed of the same material at the same time, or the weir plate 1 and the plate-shaped ribs 2, 3, ..., 4 ...
It is also possible to separately form and, and to join them by an adhesive or subsequent welding.

On the other hand, in the present invention, the thickness of the weir plate 1 is preferably in the range of 2 to 10 mm. If the thickness is less than 2 mm, the mechanical strength will be poor, and if it exceeds 10 mm, there will be no particular advantage and the thickness will be unnecessarily, which is uneconomical and impairs the advantage of weight reduction.

The total size of the heights of the plate ribs 2, 3 and 4 and the thickness of the weir plate 1 is preferably 55 to 75 mm from the viewpoint of being used in combination with a conventionally used plywood form. Specifically, the above total dimensions are 60 to 62 mm in the Kanto region,
In the Kansai region, 70 to 72 mm is common, and having a total size equivalent to this is very advantageous in practical use.

The width of the plate-shaped ribs 2, 3 and 4 described above is usually 2 to 5 mm at the tip, and the width at the base of the weir plate 1 becomes thicker at a gradient of 2 degrees or less during molding. It is preferable to improve the quality of the product. More preferably 1
Or less, optimally 0.5 ° or less.

Further, the number of the plate-shaped ribs 3 ... 4 ... varies depending on various conditions such as the size of the resin concrete casting mold 10 and the thickness of the dam 1, and is not particularly limited. However, they are usually provided at intervals of 20 to 300 mm in the width direction.

The resin concrete pouring formwork 1 of the present invention
The resin used in No. 0 is, as the thermoplastic resin, a general thermoplastic resin such as polyethylene, polypropylene, polyvinyl chloride, ABS resin, polyamide, polycarbonate, polyethylene terephthalate, a modified polymer alloy thereof, or a mixture thereof. Can be mentioned. Examples of the thermosetting resin include epoxy resin, unsaturated polyester resin, phenol resin, and melamine resin. From the viewpoint of molding cycle and the like, it is preferable to use a thermoplastic resin.

If desired, various additives such as heat stabilizers, UV inhibitors and the like, colorants, inorganic fillers and the like may be added to such resins.

Further, it is preferable to add various reinforcing fibers to these resins in order to improve strength and elastic modulus. Examples of the reinforcing fiber include glass fiber, carbon fiber, aramid fiber and the like. The length of the reinforcing fiber is 0.1
It is in the range of 50 mm, preferably in the range of 1 to 15 mm. When reinforcing fibers shorter than this range are used, sufficient strength as a concrete pouring form cannot be obtained. Also,
When reinforcing fibers longer than this range are used, the filling of the fibers into the ribs is poor, so a product in which the fibers are evenly dispersed cannot be obtained, and it becomes difficult to crush or reuse them at the time of disposal. There are problems such as becoming.

The compounding amount of the above-mentioned reinforcing fibers to the matrix resin is 5 to 50% by weight as the fiber content because of the physical strength as a concrete pouring formwork and manufacturing problems.
Preferably it is in the range of 10 to 40% by weight. When the content is lower than this range, the mechanical strength of the product is poor, and when it exceeds this range, there is a problem in molding.

The resin-made concrete casting mold 10 of the present invention is integrally manufactured as the same molded body by hot pressing the above-mentioned resin.

As the molding method, various methods such as an injection molding method and a pressing method can be adopted. When the reinforcing fiber-containing thermoplastic resin preferably used in the present invention is used, it is preferably molded by a hot pressing method. In the injection molding method, etc., the reinforced fibers are severely cut during manufacturing,
Since it is difficult to contain the reinforcing fiber of the desired length, the resin is not easily filled in the ribs, or the product warps or deforms, a practical formwork for concrete pouring. As a result, only insufficient products can be obtained.

In the above hot press molding, the reinforcing fiber-containing thermoplastic resin used as a raw material may be a melt of the reinforcing fiber-containing thermoplastic resin, or a reinforcing fiber-containing thermoplastic resin produced in advance. A resin sheet, for example, a stampable sheet may be heated to a temperature higher than the melting temperature of the resin, but in the case of manufacturing high plate-shaped ribs 2, 3 and 4, the former melt is used. It is preferable.

The resin-made concrete casting formwork 10 of the present invention is usually produced as it is, but for the purpose of making the surface of the weir board 1 smoother and the like, a surface material may be added if necessary. May be attached. Examples of the surface material used for this purpose include various thermoplastic resin sheets and films.

[0046]

The present invention will be described in more detail with reference to the following examples, but it goes without saying that the present invention is not limited thereto.

In the production, polypropylene pellets containing 30% by weight of glass fibers having an average fiber length of 6 mm were supplied to a plasticizer and heated and melted at 250 ° C. This melt was supplied between the male and female dies having a cavity clearance of about 15 mm, and the mold was clamped until the cavity clearance in the plane portion between the male and female dies was 3.5 mm, pressurized and cooled. Length 1800 mm × width 600 shown in 6
A mm-shaped thermoplastic resin concrete pouring frame 30 was obtained.

Specific dimensions of each part are as follows.

Thickness of weir plate 1: 3.5 mm Height of plate ribs 2, 3, 4: 68.5 mm Base width between plate ribs 3, 4 and weir plate: 3.5 mm Plate rib 3 -Thickness of the tip of 4: 3.0 mm Root width of the plate-shaped rib 2 with the weir plate 1: 4.5 mm Thickness of the tip of the plate-shaped rib 2: 4.0 mm Height of the plate-shaped ribs 2, 3 and 4 Total size of the thickness of the sackboard: 72.0 mm Plate-shaped ribs 3: All 6 in the width direction (not including both side plates), both side intervals: 120 mm, other rib intervals; 72 mm, between both side ribs Ribs 13, 13 with a height of 30 mm are provided in the center for each 1
Two books in total. Plate-shaped ribs 4: All 9 (including both side plates) in the longitudinal direction, 150 mm and 1650 mm from both side plates in the longitudinal direction, respectively.
Position and five between them at 250 mm intervals,
7 in total.

Number of separate rails 5: A total of 3 pairs are installed centering on the central part of the mold in the short-side direction and a position 150 mm to the left and right from the central part. Shape of the separation rail 5: width 2.0 mm, height 8.5 mm.
The separation rails 5 and 5 at the central portion in the horizontal direction have 150 mm, 650 mm, 1150 mm, and 1650 m from the bottom in the vertical direction of the mold.
It has an inscribed circle with the same width and height as the rail at the position m. For the separate rails 5 on both sides in the horizontal direction, 150 mm, 525 mm, 900 mm, 1275 m from the bottom of the mold in the vertical direction.
It has an inscribed circle having the same width and the same height as the rail at a position of m and 1650 mm.

Obtained resin concrete casting form 3
0 and FIGs. 10 and 11 (a) (b) for comparison.
Conventional synthetic resin concrete pouring form 6 shown in
0 was used for the assembly construction test. In the construction test, two resin-made concrete casting molds 30 and 30 each having a height of 1800 mm and a width of 600 mm are arranged at a distance of 200 mm between the dams 1
1 are arranged so as to face each other, and are provided at positions 150, 650, 1150, and 1650 mm from the upper end on the separate rails 5 and 5 installed in the center of these resin concrete casting molds 30 and 30. A hole 1a for the separator 11 was made in the circular portion, and a hole was made in the separation guide 64 provided at the same height in the comparative resin concrete casting form 60. Here, the interval between the facing resin concrete casting molds 30, 30 is 200 m.
Although it was attempted to install the separator 11 for making the m through the hole 1a described above, the product of the present invention could easily pass the separator 11 through the hole 1a by using a wire for holding the separator through the hole 1a. However, the comparative product could not be easily passed because the wall of the separation guide 64b interfered.

Form 3 for resin concrete pouring according to the present invention
In addition to the above-mentioned tubular body 8, 0 is freely separator 11 at all vertical positions where the separation rails 5 are installed.
Found that can be installed. On the other hand, in the product of the comparative example, it was found that it is difficult to install the separator 11 except the part where the separation guide 64 is present, and there is a considerable limitation in construction.

[0053]

EFFECTS OF THE INVENTION The ribbed resin concrete casting formwork of the present invention makes it easier to attach a separator during construction as compared with a conventional ribbed resin concrete placement formwork, and also attaches the separator. The position can be freely selected, and its practical utility value is extremely high.

[Brief description of the drawings]

FIG. 1 is a front view showing a resin concrete pouring formwork with ribs according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an end view taken along line AA of FIG. 1;

FIG. 4 is a cross-sectional view showing a state where a separator is attached to the ribbed resin concrete casting formwork.

FIG. 5 is a front view showing a resin concrete pouring formwork with a rib according to another embodiment of the present invention.

FIG. 6 is a front view showing a resin-made concrete pouring formwork with ribs according to still another embodiment of the present invention.

7 is a cross-sectional view taken along the line BB of FIG.

FIG. 8 is a perspective view showing a resin-made concrete pouring frame with ribs according to still another embodiment of the present invention.

9A and 9B show a conventional resin-made concrete casting form with ribs, in which FIG. 9A is a perspective view and FIG. 9B is an end view of a main part.

FIG. 10 is a perspective view showing another conventional resin-made concrete pouring formwork with ribs.

11A and 11B show the above-mentioned ribbed resin concrete casting form, in which FIG. 11A is a front view and FIG. 11B is a right side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Weirboard 2 Plate-like rib 3 Plate-like rib 4 Plate-like rib 5 Separator rail (separator mounting rib) 8 Cylindrical body 10 Resin concrete pouring formwork (ribbed resin concrete pouring formwork) 12 Form Thailand 12a Seat 30 Resin concrete pouring formwork (Ribbed resin concrete pouring formwork)

Claims (6)

[Claims] 1. A resin-made concrete casting mold with ribs provided with a plurality of reinforcing plate-shaped ribs which are parallel to the entire circumference of the weir and the longitudinal and / or horizontal sides of the weir, and which connect both ends. A resin-made concrete casting with ribs, characterized in that two separator mounting ribs having a height lower than that of the plate-shaped ribs are arranged in a rail shape in parallel to the longitudinal direction of the weir plate as a set. Formwork. 2. The distance between two separator mounting ribs arranged in a rail shape is larger than the diameter of the separator and smaller than the diameter of the seat of the foam tie. Formwork made of resin with ribs for concrete pouring. 3. The resin-made concrete casting with ribs according to claim 1, wherein two separator mounting ribs arranged in a rail shape are provided over the entire length connecting both longitudinal ends of the weir board. Formwork. 4. The resin concrete with ribs according to claim 1, wherein two separator mounting ribs arranged in a rail shape are provided for a certain length in the longitudinal direction of the weir board. Formwork for casting. 5. The rib according to claim 1, wherein the two separator mounting ribs arranged in a rail shape are provided at a central portion in the lateral direction of the weir board or at positions of four equal points. Formwork made of resin concrete. 6. A cylindrical body having the same height as the separator mounting ribs is formed between the two separator mounting ribs arranged in a rail shape, and the inner diameter of the cylindrical body is the separator. The ribbed resin concrete pouring formwork according to claim 1, which is formed to have a diameter larger than that of the foam tie and smaller than the diameter of the seat of the foam tie.